diff options
Diffstat (limited to 'drivers')
106 files changed, 5077 insertions, 3724 deletions
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c index a8c8b56b275e..1b3def1e8591 100644 --- a/drivers/block/viodasd.c +++ b/drivers/block/viodasd.c @@ -28,6 +28,9 @@ * All disk operations are performed by sending messages back and forth to * the OS/400 partition. */ + +#define pr_fmt(fmt) "viod: " fmt + #include <linux/major.h> #include <linux/fs.h> #include <linux/module.h> @@ -63,9 +66,6 @@ MODULE_LICENSE("GPL"); #define VIOD_VERS "1.64" -#define VIOD_KERN_WARNING KERN_WARNING "viod: " -#define VIOD_KERN_INFO KERN_INFO "viod: " - enum { PARTITION_SHIFT = 3, MAX_DISKNO = HVMAXARCHITECTEDVIRTUALDISKS, @@ -156,7 +156,7 @@ static int viodasd_open(struct block_device *bdev, fmode_t mode) ((u64)DEVICE_NO(d) << 48) | ((u64)flags << 32), 0, 0, 0); if (hvrc != 0) { - printk(VIOD_KERN_WARNING "HV open failed %d\n", (int)hvrc); + pr_warning("HV open failed %d\n", (int)hvrc); return -EIO; } @@ -167,9 +167,8 @@ static int viodasd_open(struct block_device *bdev, fmode_t mode) const struct vio_error_entry *err = vio_lookup_rc(viodasd_err_table, we.sub_result); - printk(VIOD_KERN_WARNING - "bad rc opening disk: %d:0x%04x (%s)\n", - (int)we.rc, we.sub_result, err->msg); + pr_warning("bad rc opening disk: %d:0x%04x (%s)\n", + (int)we.rc, we.sub_result, err->msg); return -EIO; } @@ -195,8 +194,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode) ((u64)DEVICE_NO(d) << 48) /* | ((u64)flags << 32) */, 0, 0, 0); if (hvrc != 0) - printk(VIOD_KERN_WARNING "HV close call failed %d\n", - (int)hvrc); + pr_warning("HV close call failed %d\n", (int)hvrc); return 0; } @@ -288,8 +286,7 @@ static int send_request(struct request *req) bevent = (struct vioblocklpevent *) vio_get_event_buffer(viomajorsubtype_blockio); if (bevent == NULL) { - printk(VIOD_KERN_WARNING - "error allocating disk event buffer\n"); + pr_warning("error allocating disk event buffer\n"); goto error_ret; } @@ -333,9 +330,8 @@ static int send_request(struct request *req) } if (hvrc != HvLpEvent_Rc_Good) { - printk(VIOD_KERN_WARNING - "error sending disk event to OS/400 (rc %d)\n", - (int)hvrc); + pr_warning("error sending disk event to OS/400 (rc %d)\n", + (int)hvrc); goto error_ret; } spin_unlock_irqrestore(&viodasd_spinlock, flags); @@ -402,7 +398,7 @@ retry: ((u64)dev_no << 48) | ((u64)flags<< 32), 0, 0, 0); if (hvrc != 0) { - printk(VIOD_KERN_WARNING "bad rc on HV open %d\n", (int)hvrc); + pr_warning("bad rc on HV open %d\n", (int)hvrc); return 0; } @@ -416,9 +412,8 @@ retry: goto retry; } if (we.max_disk > (MAX_DISKNO - 1)) { - printk_once(VIOD_KERN_INFO - "Only examining the first %d of %d disks connected\n", - MAX_DISKNO, we.max_disk + 1); + printk_once(KERN_INFO pr_fmt("Only examining the first %d of %d disks connected\n"), + MAX_DISKNO, we.max_disk + 1); } /* Send the close event to OS/400. We DON'T expect a response */ @@ -432,17 +427,15 @@ retry: ((u64)dev_no << 48) | ((u64)flags << 32), 0, 0, 0); if (hvrc != 0) { - printk(VIOD_KERN_WARNING - "bad rc sending event to OS/400 %d\n", (int)hvrc); + pr_warning("bad rc sending event to OS/400 %d\n", (int)hvrc); return 0; } if (d->dev == NULL) { /* this is when we reprobe for new disks */ if (vio_create_viodasd(dev_no) == NULL) { - printk(VIOD_KERN_WARNING - "cannot allocate virtual device for disk %d\n", - dev_no); + pr_warning("cannot allocate virtual device for disk %d\n", + dev_no); return 0; } /* @@ -457,15 +450,13 @@ retry: spin_lock_init(&d->q_lock); q = blk_init_queue(do_viodasd_request, &d->q_lock); if (q == NULL) { - printk(VIOD_KERN_WARNING "cannot allocate queue for disk %d\n", - dev_no); + pr_warning("cannot allocate queue for disk %d\n", dev_no); return 0; } g = alloc_disk(1 << PARTITION_SHIFT); if (g == NULL) { - printk(VIOD_KERN_WARNING - "cannot allocate disk structure for disk %d\n", - dev_no); + pr_warning("cannot allocate disk structure for disk %d\n", + dev_no); blk_cleanup_queue(q); return 0; } @@ -489,13 +480,12 @@ retry: g->driverfs_dev = d->dev; set_capacity(g, d->size >> 9); - printk(VIOD_KERN_INFO "disk %d: %lu sectors (%lu MB) " - "CHS=%d/%d/%d sector size %d%s\n", - dev_no, (unsigned long)(d->size >> 9), - (unsigned long)(d->size >> 20), - (int)d->cylinders, (int)d->tracks, - (int)d->sectors, (int)d->bytes_per_sector, - d->read_only ? " (RO)" : ""); + pr_info("disk %d: %lu sectors (%lu MB) CHS=%d/%d/%d sector size %d%s\n", + dev_no, (unsigned long)(d->size >> 9), + (unsigned long)(d->size >> 20), + (int)d->cylinders, (int)d->tracks, + (int)d->sectors, (int)d->bytes_per_sector, + d->read_only ? " (RO)" : ""); /* register us in the global list */ add_disk(g); @@ -580,8 +570,8 @@ static int viodasd_handle_read_write(struct vioblocklpevent *bevent) if (error) { const struct vio_error_entry *err; err = vio_lookup_rc(viodasd_err_table, bevent->sub_result); - printk(VIOD_KERN_WARNING "read/write error %d:0x%04x (%s)\n", - event->xRc, bevent->sub_result, err->msg); + pr_warning("read/write error %d:0x%04x (%s)\n", + event->xRc, bevent->sub_result, err->msg); num_sect = blk_rq_sectors(req); } qlock = req->q->queue_lock; @@ -606,8 +596,7 @@ static void handle_block_event(struct HvLpEvent *event) return; /* First, we should NEVER get an int here...only acks */ if (hvlpevent_is_int(event)) { - printk(VIOD_KERN_WARNING - "Yikes! got an int in viodasd event handler!\n"); + pr_warning("Yikes! got an int in viodasd event handler!\n"); if (hvlpevent_need_ack(event)) { event->xRc = HvLpEvent_Rc_InvalidSubtype; HvCallEvent_ackLpEvent(event); @@ -650,7 +639,7 @@ static void handle_block_event(struct HvLpEvent *event) break; default: - printk(VIOD_KERN_WARNING "invalid subtype!"); + pr_warning("invalid subtype!"); if (hvlpevent_need_ack(event)) { event->xRc = HvLpEvent_Rc_InvalidSubtype; HvCallEvent_ackLpEvent(event); @@ -739,29 +728,26 @@ static int __init viodasd_init(void) vio_set_hostlp(); if (viopath_hostLp == HvLpIndexInvalid) { - printk(VIOD_KERN_WARNING "invalid hosting partition\n"); + pr_warning("invalid hosting partition\n"); rc = -EIO; goto early_fail; } - printk(VIOD_KERN_INFO "vers " VIOD_VERS ", hosting partition %d\n", - viopath_hostLp); + pr_info("vers " VIOD_VERS ", hosting partition %d\n", viopath_hostLp); /* register the block device */ rc = register_blkdev(VIODASD_MAJOR, VIOD_GENHD_NAME); if (rc) { - printk(VIOD_KERN_WARNING - "Unable to get major number %d for %s\n", - VIODASD_MAJOR, VIOD_GENHD_NAME); + pr_warning("Unable to get major number %d for %s\n", + VIODASD_MAJOR, VIOD_GENHD_NAME); goto early_fail; } /* Actually open the path to the hosting partition */ rc = viopath_open(viopath_hostLp, viomajorsubtype_blockio, VIOMAXREQ + 2); if (rc) { - printk(VIOD_KERN_WARNING - "error opening path to host partition %d\n", - viopath_hostLp); + pr_warning("error opening path to host partition %d\n", + viopath_hostLp); goto unregister_blk; } @@ -770,7 +756,7 @@ static int __init viodasd_init(void) rc = vio_register_driver(&viodasd_driver); if (rc) { - printk(VIOD_KERN_WARNING "vio_register_driver failed\n"); + pr_warning("vio_register_driver failed\n"); goto unset_handler; } diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index d8dac5820f0e..4c3b59be286a 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -748,9 +748,9 @@ static const struct tty_operations hvc_ops = { .chars_in_buffer = hvc_chars_in_buffer, }; -struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data, - const struct hv_ops *ops, - int outbuf_size) +struct hvc_struct *hvc_alloc(uint32_t vtermno, int data, + const struct hv_ops *ops, + int outbuf_size) { struct hvc_struct *hp; int i; diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h index 52ddf4d3716c..54381eba4e4a 100644 --- a/drivers/char/hvc_console.h +++ b/drivers/char/hvc_console.h @@ -80,8 +80,8 @@ extern int hvc_instantiate(uint32_t vtermno, int index, const struct hv_ops *ops); /* register a vterm for hvc tty operation (module_init or hotplug add) */ -extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int data, - const struct hv_ops *ops, int outbuf_size); +extern struct hvc_struct * hvc_alloc(uint32_t vtermno, int data, + const struct hv_ops *ops, int outbuf_size); /* remove a vterm from hvc tty operation (module_exit or hotplug remove) */ extern int hvc_remove(struct hvc_struct *hp); diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index 2db4c0a29b05..c9bc896d68af 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -1047,7 +1047,7 @@ release_io: static ssize_t cmm_write(struct file *filp, const char __user *buf, size_t count, loff_t *ppos) { - struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data; + struct cm4000_dev *dev = filp->private_data; unsigned int iobase = dev->p_dev->io.BasePort1; unsigned short s; unsigned char tmp; diff --git a/drivers/hwmon/ams/ams-core.c b/drivers/hwmon/ams/ams-core.c index 6c9ace1b76f6..2ad62c339cd2 100644 --- a/drivers/hwmon/ams/ams-core.c +++ b/drivers/hwmon/ams/ams-core.c @@ -213,7 +213,7 @@ int __init ams_init(void) return -ENODEV; } -void ams_exit(void) +void ams_sensor_detach(void) { /* Remove input device */ ams_input_exit(); @@ -221,9 +221,6 @@ void ams_exit(void) /* Remove attributes */ device_remove_file(&ams_info.of_dev->dev, &dev_attr_current); - /* Shut down implementation */ - ams_info.exit(); - /* Flush interrupt worker * * We do this after ams_info.exit(), because an interrupt might @@ -239,6 +236,12 @@ void ams_exit(void) pmf_unregister_irq_client(&ams_freefall_client); } +static void __exit ams_exit(void) +{ + /* Shut down implementation */ + ams_info.exit(); +} + MODULE_AUTHOR("Stelian Pop, Michael Hanselmann"); MODULE_DESCRIPTION("Apple Motion Sensor driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/ams/ams-i2c.c b/drivers/hwmon/ams/ams-i2c.c index 2cbf8a6506c7..abeecd27b484 100644 --- a/drivers/hwmon/ams/ams-i2c.c +++ b/drivers/hwmon/ams/ams-i2c.c @@ -238,6 +238,8 @@ static int ams_i2c_probe(struct i2c_client *client, static int ams_i2c_remove(struct i2c_client *client) { if (ams_info.has_device) { + ams_sensor_detach(); + /* Disable interrupts */ ams_i2c_set_irq(AMS_IRQ_ALL, 0); diff --git a/drivers/hwmon/ams/ams-pmu.c b/drivers/hwmon/ams/ams-pmu.c index fb18b3d3162b..4f61b3ee1b08 100644 --- a/drivers/hwmon/ams/ams-pmu.c +++ b/drivers/hwmon/ams/ams-pmu.c @@ -133,6 +133,8 @@ static void ams_pmu_get_xyz(s8 *x, s8 *y, s8 *z) static void ams_pmu_exit(void) { + ams_sensor_detach(); + /* Disable interrupts */ ams_pmu_set_irq(AMS_IRQ_ALL, 0); diff --git a/drivers/hwmon/ams/ams.h b/drivers/hwmon/ams/ams.h index 5ed387b0bd9a..b28d7e27a031 100644 --- a/drivers/hwmon/ams/ams.h +++ b/drivers/hwmon/ams/ams.h @@ -61,6 +61,7 @@ extern struct ams ams_info; extern void ams_sensors(s8 *x, s8 *y, s8 *z); extern int ams_sensor_attach(void); +extern void ams_sensor_detach(void); extern int ams_pmu_init(struct device_node *np); extern int ams_i2c_init(struct device_node *np); diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 5f318ce29770..737f05200b1d 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -564,6 +564,16 @@ config I2C_VERSATILE This driver can also be built as a module. If so, the module will be called i2c-versatile. +config I2C_OCTEON + tristate "Cavium OCTEON I2C bus support" + depends on CPU_CAVIUM_OCTEON + help + Say yes if you want to support the I2C serial bus on Cavium + OCTEON SOC. + + This driver can also be built as a module. If so, the module + will be called i2c-octeon. + comment "External I2C/SMBus adapter drivers" config I2C_PARPORT diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile index 302c551977bb..c2c4ea1908d8 100644 --- a/drivers/i2c/busses/Makefile +++ b/drivers/i2c/busses/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_I2C_SH_MOBILE) += i2c-sh_mobile.o obj-$(CONFIG_I2C_SIMTEC) += i2c-simtec.o obj-$(CONFIG_I2C_STU300) += i2c-stu300.o obj-$(CONFIG_I2C_VERSATILE) += i2c-versatile.o +obj-$(CONFIG_I2C_OCTEON) += i2c-octeon.o # External I2C/SMBus adapter drivers obj-$(CONFIG_I2C_PARPORT) += i2c-parport.o diff --git a/drivers/i2c/busses/i2c-octeon.c b/drivers/i2c/busses/i2c-octeon.c new file mode 100644 index 000000000000..60375504fa49 --- /dev/null +++ b/drivers/i2c/busses/i2c-octeon.c @@ -0,0 +1,651 @@ +/* + * (C) Copyright 2009-2010 + * Nokia Siemens Networks, michael.lawnick.ext@nsn.com + * + * Portions Copyright (C) 2010 Cavium Networks, Inc. + * + * This is a driver for the i2c adapter in Cavium Networks' OCTEON processors. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/init.h> + +#include <linux/io.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/platform_device.h> + +#include <asm/octeon/octeon.h> + +#define DRV_NAME "i2c-octeon" + +/* The previous out-of-tree version was implicitly version 1.0. */ +#define DRV_VERSION "2.0" + +/* register offsets */ +#define SW_TWSI 0x00 +#define TWSI_INT 0x10 + +/* Controller command patterns */ +#define SW_TWSI_V 0x8000000000000000ull +#define SW_TWSI_EOP_TWSI_DATA 0x0C00000100000000ull +#define SW_TWSI_EOP_TWSI_CTL 0x0C00000200000000ull +#define SW_TWSI_EOP_TWSI_CLKCTL 0x0C00000300000000ull +#define SW_TWSI_EOP_TWSI_STAT 0x0C00000300000000ull +#define SW_TWSI_EOP_TWSI_RST 0x0C00000700000000ull +#define SW_TWSI_OP_TWSI_CLK 0x0800000000000000ull +#define SW_TWSI_R 0x0100000000000000ull + +/* Controller command and status bits */ +#define TWSI_CTL_CE 0x80 +#define TWSI_CTL_ENAB 0x40 +#define TWSI_CTL_STA 0x20 +#define TWSI_CTL_STP 0x10 +#define TWSI_CTL_IFLG 0x08 +#define TWSI_CTL_AAK 0x04 + +/* Some status values */ +#define STAT_START 0x08 +#define STAT_RSTART 0x10 +#define STAT_TXADDR_ACK 0x18 +#define STAT_TXDATA_ACK 0x28 +#define STAT_RXADDR_ACK 0x40 +#define STAT_RXDATA_ACK 0x50 +#define STAT_IDLE 0xF8 + +struct octeon_i2c { + wait_queue_head_t queue; + struct i2c_adapter adap; + int irq; + int twsi_freq; + int sys_freq; + resource_size_t twsi_phys; + void __iomem *twsi_base; + resource_size_t regsize; + struct device *dev; +}; + +/** + * octeon_i2c_write_sw - write an I2C core register. + * @i2c: The struct octeon_i2c. + * @eop_reg: Register selector. + * @data: Value to be written. + * + * The I2C core registers are accessed indirectly via the SW_TWSI CSR. + */ +static void octeon_i2c_write_sw(struct octeon_i2c *i2c, + u64 eop_reg, + u8 data) +{ + u64 tmp; + + __raw_writeq(SW_TWSI_V | eop_reg | data, i2c->twsi_base + SW_TWSI); + do { + tmp = __raw_readq(i2c->twsi_base + SW_TWSI); + } while ((tmp & SW_TWSI_V) != 0); +} + +/** + * octeon_i2c_read_sw - write an I2C core register. + * @i2c: The struct octeon_i2c. + * @eop_reg: Register selector. + * + * Returns the data. + * + * The I2C core registers are accessed indirectly via the SW_TWSI CSR. + */ +static u8 octeon_i2c_read_sw(struct octeon_i2c *i2c, u64 eop_reg) +{ + u64 tmp; + + __raw_writeq(SW_TWSI_V | eop_reg | SW_TWSI_R, i2c->twsi_base + SW_TWSI); + do { + tmp = __raw_readq(i2c->twsi_base + SW_TWSI); + } while ((tmp & SW_TWSI_V) != 0); + + return tmp & 0xFF; +} + +/** + * octeon_i2c_write_int - write the TWSI_INT register + * @i2c: The struct octeon_i2c. + * @data: Value to be written. + */ +static void octeon_i2c_write_int(struct octeon_i2c *i2c, u64 data) +{ + u64 tmp; + + __raw_writeq(data, i2c->twsi_base + TWSI_INT); + tmp = __raw_readq(i2c->twsi_base + TWSI_INT); +} + +/** + * octeon_i2c_int_enable - enable the TS interrupt. + * @i2c: The struct octeon_i2c. + * + * The interrupt will be asserted when there is non-STAT_IDLE state in + * the SW_TWSI_EOP_TWSI_STAT register. + */ +static void octeon_i2c_int_enable(struct octeon_i2c *i2c) +{ + octeon_i2c_write_int(i2c, 0x40); +} + +/** + * octeon_i2c_int_disable - disable the TS interrupt. + * @i2c: The struct octeon_i2c. + */ +static void octeon_i2c_int_disable(struct octeon_i2c *i2c) +{ + octeon_i2c_write_int(i2c, 0); +} + +/** + * octeon_i2c_unblock - unblock the bus. + * @i2c: The struct octeon_i2c. + * + * If there was a reset while a device was driving 0 to bus, + * bus is blocked. We toggle it free manually by some clock + * cycles and send a stop. + */ +static void octeon_i2c_unblock(struct octeon_i2c *i2c) +{ + int i; + + dev_dbg(i2c->dev, "%s\n", __func__); + for (i = 0; i < 9; i++) { + octeon_i2c_write_int(i2c, 0x0); + udelay(5); + octeon_i2c_write_int(i2c, 0x200); + udelay(5); + } + octeon_i2c_write_int(i2c, 0x300); + udelay(5); + octeon_i2c_write_int(i2c, 0x100); + udelay(5); + octeon_i2c_write_int(i2c, 0x0); +} + +/** + * octeon_i2c_isr - the interrupt service routine. + * @int: The irq, unused. + * @dev_id: Our struct octeon_i2c. + */ +static irqreturn_t octeon_i2c_isr(int irq, void *dev_id) +{ + struct octeon_i2c *i2c = dev_id; + + octeon_i2c_int_disable(i2c); + wake_up_interruptible(&i2c->queue); + + return IRQ_HANDLED; +} + + +static int octeon_i2c_test_iflg(struct octeon_i2c *i2c) +{ + return (octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_CTL) & TWSI_CTL_IFLG) != 0; +} + +/** + * octeon_i2c_wait - wait for the IFLG to be set. + * @i2c: The struct octeon_i2c. + * + * Returns 0 on success, otherwise a negative errno. + */ +static int octeon_i2c_wait(struct octeon_i2c *i2c) +{ + int result; + + octeon_i2c_int_enable(i2c); + + result = wait_event_interruptible_timeout(i2c->queue, + octeon_i2c_test_iflg(i2c), + i2c->adap.timeout); + + octeon_i2c_int_disable(i2c); + + if (result < 0) { + dev_dbg(i2c->dev, "%s: wait interrupted\n", __func__); + return result; + } else if (result == 0) { + dev_dbg(i2c->dev, "%s: timeout\n", __func__); + result = -ETIMEDOUT; + } + + return 0; +} + +/** + * octeon_i2c_start - send START to the bus. + * @i2c: The struct octeon_i2c. + * + * Returns 0 on success, otherwise a negative errno. + */ +static int octeon_i2c_start(struct octeon_i2c *i2c) +{ + u8 data; + int result; + + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, + TWSI_CTL_ENAB | TWSI_CTL_STA); + + result = octeon_i2c_wait(i2c); + if (result) { + if (octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT) == STAT_IDLE) { + /* + * Controller refused to send start flag May + * be a client is holding SDA low - let's try + * to free it. + */ + octeon_i2c_unblock(i2c); + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, + TWSI_CTL_ENAB | TWSI_CTL_STA); + + result = octeon_i2c_wait(i2c); + } + if (result) + return result; + } + + data = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT); + if ((data != STAT_START) && (data != STAT_RSTART)) { + dev_err(i2c->dev, "%s: bad status (0x%x)\n", __func__, data); + return -EIO; + } + + return 0; +} + +/** + * octeon_i2c_stop - send STOP to the bus. + * @i2c: The struct octeon_i2c. + * + * Returns 0 on success, otherwise a negative errno. + */ +static int octeon_i2c_stop(struct octeon_i2c *i2c) +{ + u8 data; + + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, + TWSI_CTL_ENAB | TWSI_CTL_STP); + + data = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT); + + if (data != STAT_IDLE) { + dev_err(i2c->dev, "%s: bad status(0x%x)\n", __func__, data); + return -EIO; + } + return 0; +} + +/** + * octeon_i2c_write - send data to the bus. + * @i2c: The struct octeon_i2c. + * @target: Target address. + * @data: Pointer to the data to be sent. + * @length: Length of the data. + * + * The address is sent over the bus, then the data. + * + * Returns 0 on success, otherwise a negative errno. + */ +static int octeon_i2c_write(struct octeon_i2c *i2c, int target, + const u8 *data, int length) +{ + int i, result; + u8 tmp; + + result = octeon_i2c_start(i2c); + if (result) + return result; + + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, target << 1); + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB); + + result = octeon_i2c_wait(i2c); + if (result) + return result; + + for (i = 0; i < length; i++) { + tmp = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT); + if ((tmp != STAT_TXADDR_ACK) && (tmp != STAT_TXDATA_ACK)) { + dev_err(i2c->dev, + "%s: bad status before write (0x%x)\n", + __func__, tmp); + return -EIO; + } + + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, data[i]); + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB); + + result = octeon_i2c_wait(i2c); + if (result) + return result; + } + + return 0; +} + +/** + * octeon_i2c_read - receive data from the bus. + * @i2c: The struct octeon_i2c. + * @target: Target address. + * @data: Pointer to the location to store the datae . + * @length: Length of the data. + * + * The address is sent over the bus, then the data is read. + * + * Returns 0 on success, otherwise a negative errno. + */ +static int octeon_i2c_read(struct octeon_i2c *i2c, int target, + u8 *data, int length) +{ + int i, result; + u8 tmp; + + if (length < 1) + return -EINVAL; + + result = octeon_i2c_start(i2c); + if (result) + return result; + + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, (target<<1) | 1); + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB); + + result = octeon_i2c_wait(i2c); + if (result) + return result; + + for (i = 0; i < length; i++) { + tmp = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT); + if ((tmp != STAT_RXDATA_ACK) && (tmp != STAT_RXADDR_ACK)) { + dev_err(i2c->dev, + "%s: bad status before read (0x%x)\n", + __func__, tmp); + return -EIO; + } + + if (i+1 < length) + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, + TWSI_CTL_ENAB | TWSI_CTL_AAK); + else + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, + TWSI_CTL_ENAB); + + result = octeon_i2c_wait(i2c); + if (result) + return result; + + data[i] = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_DATA); + } + return 0; +} + +/** + * octeon_i2c_xfer - The driver's master_xfer function. + * @adap: Pointer to the i2c_adapter structure. + * @msgs: Pointer to the messages to be processed. + * @num: Length of the MSGS array. + * + * Returns the number of messages processed, or a negative errno on + * failure. + */ +static int octeon_i2c_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, + int num) +{ + struct i2c_msg *pmsg; + int i; + int ret = 0; + struct octeon_i2c *i2c = i2c_get_adapdata(adap); + + for (i = 0; ret == 0 && i < num; i++) { + pmsg = &msgs[i]; + dev_dbg(i2c->dev, + "Doing %s %d byte(s) to/from 0x%02x - %d of %d messages\n", + pmsg->flags & I2C_M_RD ? "read" : "write", + pmsg->len, pmsg->addr, i + 1, num); + if (pmsg->flags & I2C_M_RD) + ret = octeon_i2c_read(i2c, pmsg->addr, pmsg->buf, + pmsg->len); + else + ret = octeon_i2c_write(i2c, pmsg->addr, pmsg->buf, + pmsg->len); + } + octeon_i2c_stop(i2c); + + return (ret != 0) ? ret : num; +} + +static u32 octeon_i2c_functionality(struct i2c_adapter *adap) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm octeon_i2c_algo = { + .master_xfer = octeon_i2c_xfer, + .functionality = octeon_i2c_functionality, +}; + +static struct i2c_adapter octeon_i2c_ops = { + .owner = THIS_MODULE, + .name = "OCTEON adapter", + .algo = &octeon_i2c_algo, + .timeout = 2, +}; + +/** + * octeon_i2c_setclock - Calculate and set clock divisors. + */ +static int __init octeon_i2c_setclock(struct octeon_i2c *i2c) +{ + int tclk, thp_base, inc, thp_idx, mdiv_idx, ndiv_idx, foscl, diff; + int thp = 0x18, mdiv = 2, ndiv = 0, delta_hz = 1000000; + + for (ndiv_idx = 0; ndiv_idx < 8 && delta_hz != 0; ndiv_idx++) { + /* + * An mdiv value of less than 2 seems to not work well + * with ds1337 RTCs, so we constrain it to larger + * values. + */ + for (mdiv_idx = 15; mdiv_idx >= 2 && delta_hz != 0; mdiv_idx--) { + /* + * For given ndiv and mdiv values check the + * two closest thp values. + */ + tclk = i2c->twsi_freq * (mdiv_idx + 1) * 10; + tclk *= (1 << ndiv_idx); + thp_base = (i2c->sys_freq / (tclk * 2)) - 1; + for (inc = 0; inc <= 1; inc++) { + thp_idx = thp_base + inc; + if (thp_idx < 5 || thp_idx > 0xff) + continue; + + foscl = i2c->sys_freq / (2 * (thp_idx + 1)); + foscl = foscl / (1 << ndiv_idx); + foscl = foscl / (mdiv_idx + 1) / 10; + diff = abs(foscl - i2c->twsi_freq); + if (diff < delta_hz) { + delta_hz = diff; + thp = thp_idx; + mdiv = mdiv_idx; + ndiv = ndiv_idx; + } + } + } + } + octeon_i2c_write_sw(i2c, SW_TWSI_OP_TWSI_CLK, thp); + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CLKCTL, (mdiv << 3) | ndiv); + + return 0; +} + +static int __init octeon_i2c_initlowlevel(struct octeon_i2c *i2c) +{ + u8 status; + int tries; + + /* disable high level controller, enable bus access */ + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB); + + /* reset controller */ + octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_RST, 0); + + for (tries = 10; tries; tries--) { + udelay(1); + status = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT); + if (status == STAT_IDLE) + return 0; + } + dev_err(i2c->dev, "%s: TWSI_RST failed! (0x%x)\n", __func__, status); + return -EIO; +} + +static int __devinit octeon_i2c_probe(struct platform_device *pdev) +{ + int irq, result = 0; + struct octeon_i2c *i2c; + struct octeon_i2c_data *i2c_data; + struct resource *res_mem; + + /* All adaptors have an irq. */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + i2c = kzalloc(sizeof(*i2c), GFP_KERNEL); + if (!i2c) { + dev_err(&pdev->dev, "kzalloc failed\n"); + result = -ENOMEM; + goto out; + } + i2c->dev = &pdev->dev; + i2c_data = pdev->dev.platform_data; + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (res_mem == NULL) { + dev_err(i2c->dev, "found no memory resource\n"); + result = -ENXIO; + goto fail_region; + } + + if (i2c_data == NULL) { + dev_err(i2c->dev, "no I2C frequency data\n"); + result = -ENXIO; + goto fail_region; + } + + i2c->twsi_phys = res_mem->start; + i2c->regsize = resource_size(res_mem); + i2c->twsi_freq = i2c_data->i2c_freq; + i2c->sys_freq = i2c_data->sys_freq; + + if (!request_mem_region(i2c->twsi_phys, i2c->regsize, res_mem->name)) { + dev_err(i2c->dev, "request_mem_region failed\n"); + goto fail_region; + } + i2c->twsi_base = ioremap(i2c->twsi_phys, i2c->regsize); + + init_waitqueue_head(&i2c->queue); + + i2c->irq = irq; + + result = request_irq(i2c->irq, octeon_i2c_isr, 0, DRV_NAME, i2c); + if (result < 0) { + dev_err(i2c->dev, "failed to attach interrupt\n"); + goto fail_irq; + } + + result = octeon_i2c_initlowlevel(i2c); + if (result) { + dev_err(i2c->dev, "init low level failed\n"); + goto fail_add; + } + + result = octeon_i2c_setclock(i2c); + if (result) { + dev_err(i2c->dev, "clock init failed\n"); + goto fail_add; + } + + i2c->adap = octeon_i2c_ops; + i2c->adap.dev.parent = &pdev->dev; + i2c->adap.nr = pdev->id >= 0 ? pdev->id : 0; + i2c_set_adapdata(&i2c->adap, i2c); + platform_set_drvdata(pdev, i2c); + + result = i2c_add_numbered_adapter(&i2c->adap); + if (result < 0) { + dev_err(i2c->dev, "failed to add adapter\n"); + goto fail_add; + } + + dev_info(i2c->dev, "version %s\n", DRV_VERSION); + + return result; + +fail_add: + platform_set_drvdata(pdev, NULL); + free_irq(i2c->irq, i2c); +fail_irq: + iounmap(i2c->twsi_base); + release_mem_region(i2c->twsi_phys, i2c->regsize); +fail_region: + kfree(i2c); +out: + return result; +}; + +static int __devexit octeon_i2c_remove(struct platform_device *pdev) +{ + struct octeon_i2c *i2c = platform_get_drvdata(pdev); + + i2c_del_adapter(&i2c->adap); + platform_set_drvdata(pdev, NULL); + free_irq(i2c->irq, i2c); + iounmap(i2c->twsi_base); + release_mem_region(i2c->twsi_phys, i2c->regsize); + kfree(i2c); + return 0; +}; + +static struct platform_driver octeon_i2c_driver = { + .probe = octeon_i2c_probe, + .remove = __devexit_p(octeon_i2c_remove), + .driver = { + .owner = THIS_MODULE, + .name = DRV_NAME, + }, +}; + +static int __init octeon_i2c_init(void) +{ + int rv; + + rv = platform_driver_register(&octeon_i2c_driver); + return rv; +} + +static void __exit octeon_i2c_exit(void) +{ + platform_driver_unregister(&octeon_i2c_driver); +} + +MODULE_AUTHOR("Michael Lawnick <michael.lawnick.ext@nsn.com>"); +MODULE_DESCRIPTION("I2C-Bus adapter for Cavium OCTEON processors"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); +MODULE_ALIAS("platform:" DRV_NAME); + +module_init(octeon_i2c_init); +module_exit(octeon_i2c_exit); diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c index 87cef0c440ad..349a67bf1a36 100644 --- a/drivers/ide/au1xxx-ide.c +++ b/drivers/ide/au1xxx-ide.c @@ -56,8 +56,8 @@ static inline void auide_insw(unsigned long port, void *addr, u32 count) chan_tab_t *ctp; au1x_ddma_desc_t *dp; - if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, - DDMA_FLAGS_NOIE)) { + if (!au1xxx_dbdma_put_dest(ahwif->rx_chan, virt_to_phys(addr), + count << 1, DDMA_FLAGS_NOIE)) { printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); return; } @@ -74,8 +74,8 @@ static inline void auide_outsw(unsigned long port, void *addr, u32 count) chan_tab_t *ctp; au1x_ddma_desc_t *dp; - if(!put_source_flags(ahwif->tx_chan, (void*)addr, - count << 1, DDMA_FLAGS_NOIE)) { + if (!au1xxx_dbdma_put_source(ahwif->tx_chan, virt_to_phys(addr), + count << 1, DDMA_FLAGS_NOIE)) { printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); return; } @@ -246,17 +246,14 @@ static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) flags = DDMA_FLAGS_NOIE; if (iswrite) { - if(!put_source_flags(ahwif->tx_chan, - (void*) sg_virt(sg), - tc, flags)) { + if (!au1xxx_dbdma_put_source(ahwif->tx_chan, + sg_phys(sg), tc, flags)) { printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); } - } else - { - if(!put_dest_flags(ahwif->rx_chan, - (void*) sg_virt(sg), - tc, flags)) { + } else { + if (!au1xxx_dbdma_put_dest(ahwif->rx_chan, + sg_phys(sg), tc, flags)) { printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); } diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c index 5ff47ba7f2d0..c42eeb43042d 100644 --- a/drivers/macintosh/therm_adt746x.c +++ b/drivers/macintosh/therm_adt746x.c @@ -90,6 +90,8 @@ static struct task_struct *thread_therm = NULL; static void write_both_fan_speed(struct thermostat *th, int speed); static void write_fan_speed(struct thermostat *th, int speed, int fan); +static void thermostat_create_files(void); +static void thermostat_remove_files(void); static int write_reg(struct thermostat* th, int reg, u8 data) @@ -161,6 +163,8 @@ remove_thermostat(struct i2c_client *client) struct thermostat *th = i2c_get_clientdata(client); int i; + thermostat_remove_files(); + if (thread_therm != NULL) { kthread_stop(thread_therm); } @@ -312,7 +316,7 @@ static void update_fans_speed (struct thermostat *th) if (verbose) printk(KERN_DEBUG "adt746x: Setting fans speed to %d " - "(limit exceeded by %d on %s) \n", + "(limit exceeded by %d on %s)\n", new_speed, var, sensor_location[fan_number+1]); write_both_fan_speed(th, new_speed); @@ -449,6 +453,8 @@ static int probe_thermostat(struct i2c_client *client, return -ENOMEM; } + thermostat_create_files(); + return 0; } @@ -566,7 +572,6 @@ thermostat_init(void) struct device_node* np; const u32 *prop; int i = 0, offset = 0; - int err; np = of_find_node_by_name(NULL, "fan"); if (!np) @@ -633,6 +638,17 @@ thermostat_init(void) return -ENODEV; } +#ifndef CONFIG_I2C_POWERMAC + request_module("i2c-powermac"); +#endif + + return i2c_add_driver(&thermostat_driver); +} + +static void thermostat_create_files(void) +{ + int err; + err = device_create_file(&of_dev->dev, &dev_attr_sensor1_temperature); err |= device_create_file(&of_dev->dev, &dev_attr_sensor2_temperature); err |= device_create_file(&of_dev->dev, &dev_attr_sensor1_limit); @@ -647,16 +663,9 @@ thermostat_init(void) if (err) printk(KERN_WARNING "Failed to create tempertaure attribute file(s).\n"); - -#ifndef CONFIG_I2C_POWERMAC - request_module("i2c-powermac"); -#endif - - return i2c_add_driver(&thermostat_driver); } -static void __exit -thermostat_exit(void) +static void thermostat_remove_files(void) { if (of_dev) { device_remove_file(&of_dev->dev, &dev_attr_sensor1_temperature); @@ -673,9 +682,14 @@ thermostat_exit(void) device_remove_file(&of_dev->dev, &dev_attr_sensor2_fan_speed); - of_device_unregister(of_dev); } +} + +static void __exit +thermostat_exit(void) +{ i2c_del_driver(&thermostat_driver); + of_device_unregister(of_dev); } module_init(thermostat_init); diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index d3f55615c099..57b21198828f 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -650,11 +650,11 @@ static int au1xmmc_prepare_data(struct au1xmmc_host *host, flags = DDMA_FLAGS_IE; if (host->flags & HOST_F_XMIT) { - ret = au1xxx_dbdma_put_source_flags(channel, - (void *)sg_virt(sg), len, flags); + ret = au1xxx_dbdma_put_source(channel, + sg_phys(sg), len, flags); } else { - ret = au1xxx_dbdma_put_dest_flags(channel, - (void *)sg_virt(sg), len, flags); + ret = au1xxx_dbdma_put_dest(channel, + sg_phys(sg), len, flags); } if (!ret) @@ -1017,6 +1017,10 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev) } else mmc->caps |= MMC_CAP_NEEDS_POLL; + /* platform may not be able to use all advertised caps */ + if (host->platdata) + mmc->caps &= ~(host->platdata->mask_host_caps); + tasklet_init(&host->data_task, au1xmmc_tasklet_data, (unsigned long)host); diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 2de0cc823d60..2bb03a8b9ef1 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -251,12 +251,6 @@ config MTD_NETtel help Support for flash chips on NETtel/SecureEdge/SnapGear boards. -config MTD_ALCHEMY - tristate "AMD Alchemy Pb1xxx/Db1xxx/RDK MTD support" - depends on SOC_AU1X00 && MTD_PARTITIONS && MTD_CFI - help - Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards - config MTD_DILNETPC tristate "CFI Flash device mapped on DIL/Net PC" depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT && BROKEN diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index ce315214ff2b..a44919f3f3d2 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -40,7 +40,6 @@ obj-$(CONFIG_MTD_SCx200_DOCFLASH)+= scx200_docflash.o obj-$(CONFIG_MTD_DBOX2) += dbox2-flash.o obj-$(CONFIG_MTD_SOLUTIONENGINE)+= solutionengine.o obj-$(CONFIG_MTD_PCI) += pci.o -obj-$(CONFIG_MTD_ALCHEMY) += alchemy-flash.o obj-$(CONFIG_MTD_AUTCPU12) += autcpu12-nvram.o obj-$(CONFIG_MTD_EDB7312) += edb7312.o obj-$(CONFIG_MTD_IMPA7) += impa7.o diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c deleted file mode 100644 index 845ad4f2a542..000000000000 --- a/drivers/mtd/maps/alchemy-flash.c +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Flash memory access on AMD Alchemy evaluation boards - * - * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com> - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> - -#ifdef CONFIG_MIPS_PB1000 -#define BOARD_MAP_NAME "Pb1000 Flash" -#define BOARD_FLASH_SIZE 0x00800000 /* 8MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_PB1500 -#define BOARD_MAP_NAME "Pb1500 Flash" -#define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_PB1100 -#define BOARD_MAP_NAME "Pb1100 Flash" -#define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_PB1550 -#define BOARD_MAP_NAME "Pb1550 Flash" -#define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_PB1200 -#define BOARD_MAP_NAME "Pb1200 Flash" -#define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ -#define BOARD_FLASH_WIDTH 2 /* 16-bits */ -#endif - -#ifdef CONFIG_MIPS_DB1000 -#define BOARD_MAP_NAME "Db1000 Flash" -#define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_DB1500 -#define BOARD_MAP_NAME "Db1500 Flash" -#define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_DB1100 -#define BOARD_MAP_NAME "Db1100 Flash" -#define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_DB1550 -#define BOARD_MAP_NAME "Db1550 Flash" -#define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#endif - -#ifdef CONFIG_MIPS_DB1200 -#define BOARD_MAP_NAME "Db1200 Flash" -#define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ -#define BOARD_FLASH_WIDTH 2 /* 16-bits */ -#endif - -#ifdef CONFIG_MIPS_BOSPORUS -#define BOARD_MAP_NAME "Bosporus Flash" -#define BOARD_FLASH_SIZE 0x01000000 /* 16MB */ -#define BOARD_FLASH_WIDTH 2 /* 16-bits */ -#endif - -#ifdef CONFIG_MIPS_MIRAGE -#define BOARD_MAP_NAME "Mirage Flash" -#define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#define USE_LOCAL_ACCESSORS /* why? */ -#endif - -static struct map_info alchemy_map = { - .name = BOARD_MAP_NAME, -}; - -static struct mtd_partition alchemy_partitions[] = { - { - .name = "User FS", - .size = BOARD_FLASH_SIZE - 0x00400000, - .offset = 0x0000000 - },{ - .name = "YAMON", - .size = 0x0100000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - },{ - .name = "raw kernel", - .size = (0x300000 - 0x40000), /* last 256KB is yamon env */ - .offset = MTDPART_OFS_APPEND, - } -}; - -static struct mtd_info *mymtd; - -static int __init alchemy_mtd_init(void) -{ - struct mtd_partition *parts; - int nb_parts = 0; - unsigned long window_addr; - unsigned long window_size; - - /* Default flash buswidth */ - alchemy_map.bankwidth = BOARD_FLASH_WIDTH; - - window_addr = 0x20000000 - BOARD_FLASH_SIZE; - window_size = BOARD_FLASH_SIZE; - - /* - * Static partition definition selection - */ - parts = alchemy_partitions; - nb_parts = ARRAY_SIZE(alchemy_partitions); - alchemy_map.size = window_size; - - /* - * Now let's probe for the actual flash. Do it here since - * specific machine settings might have been set above. - */ - printk(KERN_NOTICE BOARD_MAP_NAME ": probing %d-bit flash bus\n", - alchemy_map.bankwidth*8); - alchemy_map.virt = ioremap(window_addr, window_size); - mymtd = do_map_probe("cfi_probe", &alchemy_map); - if (!mymtd) { - iounmap(alchemy_map.virt); - return -ENXIO; - } - mymtd->owner = THIS_MODULE; - - add_mtd_partitions(mymtd, parts, nb_parts); - return 0; -} - -static void __exit alchemy_mtd_cleanup(void) -{ - if (mymtd) { - del_mtd_partitions(mymtd); - map_destroy(mymtd); - iounmap(alchemy_map.virt); - } -} - -module_init(alchemy_mtd_init); -module_exit(alchemy_mtd_cleanup); - -MODULE_AUTHOR("Embedded Alley Solutions, Inc"); -MODULE_DESCRIPTION(BOARD_MAP_NAME " MTD driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index 92c334ff4508..43d46e424040 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -19,6 +19,7 @@ #include <asm/io.h> #include <asm/mach-au1x00/au1xxx.h> +#include <asm/mach-db1x00/bcsr.h> /* * MTD structure for NAND controller @@ -475,7 +476,8 @@ static int __init au1xxx_nand_init(void) /* set gpio206 high */ au_writel(au_readl(GPIO2_DIR) & ~(1 << 6), GPIO2_DIR); - boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) | ((bcsr->status >> 6) & 0x1); + boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) | ((bcsr_read(BCSR_STATUS) >> 6) & 0x1); + switch (boot_swapboot) { case 0: case 2: diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c index 6bac04603a88..6e5a68ecde09 100644 --- a/drivers/net/au1000_eth.c +++ b/drivers/net/au1000_eth.c @@ -55,6 +55,7 @@ #include <linux/delay.h> #include <linux/crc32.h> #include <linux/phy.h> +#include <linux/platform_device.h> #include <asm/cpu.h> #include <asm/mipsregs.h> @@ -63,6 +64,7 @@ #include <asm/processor.h> #include <au1000.h> +#include <au1xxx_eth.h> #include <prom.h> #include "au1000_eth.h" @@ -112,15 +114,15 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES]; * * PHY detection algorithm * - * If AU1XXX_PHY_STATIC_CONFIG is undefined, the PHY setup is + * If phy_static_config is undefined, the PHY setup is * autodetected: * * mii_probe() first searches the current MAC's MII bus for a PHY, - * selecting the first (or last, if AU1XXX_PHY_SEARCH_HIGHEST_ADDR is + * selecting the first (or last, if phy_search_highest_addr is * defined) PHY address not already claimed by another netdev. * * If nothing was found that way when searching for the 2nd ethernet - * controller's PHY and AU1XXX_PHY1_SEARCH_ON_MAC0 is defined, then + * controller's PHY and phy1_search_mac0 is defined, then * the first MII bus is searched as well for an unclaimed PHY; this is * needed in case of a dual-PHY accessible only through the MAC0's MII * bus. @@ -129,9 +131,7 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES]; * controller is not registered to the network subsystem. */ -/* autodetection defaults */ -#undef AU1XXX_PHY_SEARCH_HIGHEST_ADDR -#define AU1XXX_PHY1_SEARCH_ON_MAC0 +/* autodetection defaults: phy1_search_mac0 */ /* static PHY setup * @@ -148,29 +148,6 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES]; * specific irq-map */ -#if defined(CONFIG_MIPS_BOSPORUS) -/* - * Micrel/Kendin 5 port switch attached to MAC0, - * MAC0 is associated with PHY address 5 (== WAN port) - * MAC1 is not associated with any PHY, since it's connected directly - * to the switch. - * no interrupts are used - */ -# define AU1XXX_PHY_STATIC_CONFIG - -# define AU1XXX_PHY0_ADDR 5 -# define AU1XXX_PHY0_BUSID 0 -# undef AU1XXX_PHY0_IRQ - -# undef AU1XXX_PHY1_ADDR -# undef AU1XXX_PHY1_BUSID -# undef AU1XXX_PHY1_IRQ -#endif - -#if defined(AU1XXX_PHY0_BUSID) && (AU1XXX_PHY0_BUSID > 0) -# error MAC0-associated PHY attached 2nd MACs MII bus not supported yet -#endif - static void enable_mac(struct net_device *dev, int force_reset) { unsigned long flags; @@ -390,67 +367,55 @@ static int mii_probe (struct net_device *dev) struct au1000_private *const aup = netdev_priv(dev); struct phy_device *phydev = NULL; -#if defined(AU1XXX_PHY_STATIC_CONFIG) - BUG_ON(aup->mac_id < 0 || aup->mac_id > 1); + if (aup->phy_static_config) { + BUG_ON(aup->mac_id < 0 || aup->mac_id > 1); - if(aup->mac_id == 0) { /* get PHY0 */ -# if defined(AU1XXX_PHY0_ADDR) - phydev = au_macs[AU1XXX_PHY0_BUSID]->mii_bus->phy_map[AU1XXX_PHY0_ADDR]; -# else - printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n", - dev->name); - return 0; -# endif /* defined(AU1XXX_PHY0_ADDR) */ - } else if (aup->mac_id == 1) { /* get PHY1 */ -# if defined(AU1XXX_PHY1_ADDR) - phydev = au_macs[AU1XXX_PHY1_BUSID]->mii_bus->phy_map[AU1XXX_PHY1_ADDR]; -# else - printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n", - dev->name); + if (aup->phy_addr) + phydev = aup->mii_bus->phy_map[aup->phy_addr]; + else + printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n", + dev->name); return 0; -# endif /* defined(AU1XXX_PHY1_ADDR) */ - } - -#else /* defined(AU1XXX_PHY_STATIC_CONFIG) */ - int phy_addr; - - /* find the first (lowest address) PHY on the current MAC's MII bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) - if (aup->mii_bus->phy_map[phy_addr]) { - phydev = aup->mii_bus->phy_map[phy_addr]; -# if !defined(AU1XXX_PHY_SEARCH_HIGHEST_ADDR) - break; /* break out with first one found */ -# endif - } + } else { + int phy_addr; + + /* find the first (lowest address) PHY on the current MAC's MII bus */ + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) + if (aup->mii_bus->phy_map[phy_addr]) { + phydev = aup->mii_bus->phy_map[phy_addr]; + if (!aup->phy_search_highest_addr) + break; /* break out with first one found */ + } -# if defined(AU1XXX_PHY1_SEARCH_ON_MAC0) - /* try harder to find a PHY */ - if (!phydev && (aup->mac_id == 1)) { - /* no PHY found, maybe we have a dual PHY? */ - printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, " - "let's see if it's attached to MAC0...\n"); + if (aup->phy1_search_mac0) { + /* try harder to find a PHY */ + if (!phydev && (aup->mac_id == 1)) { + /* no PHY found, maybe we have a dual PHY? */ + printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, " + "let's see if it's attached to MAC0...\n"); - BUG_ON(!au_macs[0]); + /* find the first (lowest address) non-attached PHY on + * the MAC0 MII bus */ + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + struct phy_device *const tmp_phydev = + aup->mii_bus->phy_map[phy_addr]; - /* find the first (lowest address) non-attached PHY on - * the MAC0 MII bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { - struct phy_device *const tmp_phydev = - au_macs[0]->mii_bus->phy_map[phy_addr]; + if (aup->mac_id == 1) + break; - if (!tmp_phydev) - continue; /* no PHY here... */ + if (!tmp_phydev) + continue; /* no PHY here... */ - if (tmp_phydev->attached_dev) - continue; /* already claimed by MAC0 */ + if (tmp_phydev->attached_dev) + continue; /* already claimed by MAC0 */ - phydev = tmp_phydev; - break; /* found it */ + phydev = tmp_phydev; + break; /* found it */ + } + } } } -# endif /* defined(AU1XXX_PHY1_SEARCH_OTHER_BUS) */ -#endif /* defined(AU1XXX_PHY_STATIC_CONFIG) */ if (!phydev) { printk (KERN_ERR DRV_NAME ":%s: no PHY found\n", dev->name); return -1; @@ -578,31 +543,6 @@ setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base) } } -static struct { - u32 base_addr; - u32 macen_addr; - int irq; - struct net_device *dev; -} iflist[2] = { -#ifdef CONFIG_SOC_AU1000 - {AU1000_ETH0_BASE, AU1000_MAC0_ENABLE, AU1000_MAC0_DMA_INT}, - {AU1000_ETH1_BASE, AU1000_MAC1_ENABLE, AU1000_MAC1_DMA_INT} -#endif -#ifdef CONFIG_SOC_AU1100 - {AU1100_ETH0_BASE, AU1100_MAC0_ENABLE, AU1100_MAC0_DMA_INT} -#endif -#ifdef CONFIG_SOC_AU1500 - {AU1500_ETH0_BASE, AU1500_MAC0_ENABLE, AU1500_MAC0_DMA_INT}, - {AU1500_ETH1_BASE, AU1500_MAC1_ENABLE, AU1500_MAC1_DMA_INT} -#endif -#ifdef CONFIG_SOC_AU1550 - {AU1550_ETH0_BASE, AU1550_MAC0_ENABLE, AU1550_MAC0_DMA_INT}, - {AU1550_ETH1_BASE, AU1550_MAC1_ENABLE, AU1550_MAC1_DMA_INT} -#endif -}; - -static int num_ifs; - /* * ethtool operations */ @@ -711,7 +651,6 @@ static int au1000_init(struct net_device *dev) static inline void update_rx_stats(struct net_device *dev, u32 status) { - struct au1000_private *aup = netdev_priv(dev); struct net_device_stats *ps = &dev->stats; ps->rx_packets++; @@ -969,7 +908,7 @@ static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev) } pDB = aup->tx_db_inuse[aup->tx_head]; - skb_copy_from_linear_data(skb, pDB->vaddr, skb->len); + skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len); if (skb->len < ETH_ZLEN) { for (i=skb->len; i<ETH_ZLEN; i++) { ((char *)pDB->vaddr)[i] = 0; @@ -1058,53 +997,59 @@ static const struct net_device_ops au1000_netdev_ops = { .ndo_change_mtu = eth_change_mtu, }; -static struct net_device * au1000_probe(int port_num) +static int __devinit au1000_probe(struct platform_device *pdev) { static unsigned version_printed = 0; struct au1000_private *aup = NULL; + struct au1000_eth_platform_data *pd; struct net_device *dev = NULL; db_dest_t *pDB, *pDBfree; + int irq, i, err = 0; + struct resource *base, *macen; char ethaddr[6]; - int irq, i, err; - u32 base, macen; - if (port_num >= NUM_ETH_INTERFACES) - return NULL; + base = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!base) { + printk(KERN_ERR DRV_NAME ": failed to retrieve base register\n"); + err = -ENODEV; + goto out; + } - base = CPHYSADDR(iflist[port_num].base_addr ); - macen = CPHYSADDR(iflist[port_num].macen_addr); - irq = iflist[port_num].irq; + macen = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!macen) { + printk(KERN_ERR DRV_NAME ": failed to retrieve MAC Enable register\n"); + err = -ENODEV; + goto out; + } - if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") || - !request_mem_region(macen, 4, "Au1x00 ENET")) - return NULL; + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + printk(KERN_ERR DRV_NAME ": failed to retrieve IRQ\n"); + err = -ENODEV; + goto out; + } - if (version_printed++ == 0) - printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR); + if (!request_mem_region(base->start, resource_size(base), pdev->name)) { + printk(KERN_ERR DRV_NAME ": failed to request memory region for base registers\n"); + err = -ENXIO; + goto out; + } + + if (!request_mem_region(macen->start, resource_size(macen), pdev->name)) { + printk(KERN_ERR DRV_NAME ": failed to request memory region for MAC enable register\n"); + err = -ENXIO; + goto err_request; + } dev = alloc_etherdev(sizeof(struct au1000_private)); if (!dev) { printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME); - return NULL; + err = -ENOMEM; + goto err_alloc; } - dev->base_addr = base; - dev->irq = irq; - dev->netdev_ops = &au1000_netdev_ops; - SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops); - dev->watchdog_timeo = ETH_TX_TIMEOUT; - - err = register_netdev(dev); - if (err != 0) { - printk(KERN_ERR "%s: Cannot register net device, error %d\n", - DRV_NAME, err); - free_netdev(dev); - return NULL; - } - - printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n", - dev->name, base, irq); - + SET_NETDEV_DEV(dev, &pdev->dev); + platform_set_drvdata(pdev, dev); aup = netdev_priv(dev); spin_lock_init(&aup->lock); @@ -1115,21 +1060,29 @@ static struct net_device * au1000_probe(int port_num) (NUM_TX_BUFFS + NUM_RX_BUFFS), &aup->dma_addr, 0); if (!aup->vaddr) { - free_netdev(dev); - release_mem_region( base, MAC_IOSIZE); - release_mem_region(macen, 4); - return NULL; + printk(KERN_ERR DRV_NAME ": failed to allocate data buffers\n"); + err = -ENOMEM; + goto err_vaddr; } /* aup->mac is the base address of the MAC's registers */ - aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr; + aup->mac = (volatile mac_reg_t *)ioremap_nocache(base->start, resource_size(base)); + if (!aup->mac) { + printk(KERN_ERR DRV_NAME ": failed to ioremap MAC registers\n"); + err = -ENXIO; + goto err_remap1; + } - /* Setup some variables for quick register address access */ - aup->enable = (volatile u32 *)iflist[port_num].macen_addr; - aup->mac_id = port_num; - au_macs[port_num] = aup; + /* Setup some variables for quick register address access */ + aup->enable = (volatile u32 *)ioremap_nocache(macen->start, resource_size(macen)); + if (!aup->enable) { + printk(KERN_ERR DRV_NAME ": failed to ioremap MAC enable register\n"); + err = -ENXIO; + goto err_remap2; + } + aup->mac_id = pdev->id; - if (port_num == 0) { + if (pdev->id == 0) { if (prom_get_ethernet_addr(ethaddr) == 0) memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr)); else { @@ -1139,7 +1092,7 @@ static struct net_device * au1000_probe(int port_num) } setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR); - } else if (port_num == 1) + } else if (pdev->id == 1) setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR); /* @@ -1147,14 +1100,37 @@ static struct net_device * au1000_probe(int port_num) * to match those that are printed on their stickers */ memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr)); - dev->dev_addr[5] += port_num; + dev->dev_addr[5] += pdev->id; *aup->enable = 0; aup->mac_enabled = 0; + pd = pdev->dev.platform_data; + if (!pd) { + printk(KERN_INFO DRV_NAME ": no platform_data passed, PHY search on MAC0\n"); + aup->phy1_search_mac0 = 1; + } else { + aup->phy_static_config = pd->phy_static_config; + aup->phy_search_highest_addr = pd->phy_search_highest_addr; + aup->phy1_search_mac0 = pd->phy1_search_mac0; + aup->phy_addr = pd->phy_addr; + aup->phy_busid = pd->phy_busid; + aup->phy_irq = pd->phy_irq; + } + + if (aup->phy_busid && aup->phy_busid > 0) { + printk(KERN_ERR DRV_NAME ": MAC0-associated PHY attached 2nd MACs MII" + "bus not supported yet\n"); + err = -ENODEV; + goto err_mdiobus_alloc; + } + aup->mii_bus = mdiobus_alloc(); - if (aup->mii_bus == NULL) - goto err_out; + if (aup->mii_bus == NULL) { + printk(KERN_ERR DRV_NAME ": failed to allocate mdiobus structure\n"); + err = -ENOMEM; + goto err_mdiobus_alloc; + } aup->mii_bus->priv = dev; aup->mii_bus->read = au1000_mdiobus_read; @@ -1168,23 +1144,19 @@ static struct net_device * au1000_probe(int port_num) for(i = 0; i < PHY_MAX_ADDR; ++i) aup->mii_bus->irq[i] = PHY_POLL; - /* if known, set corresponding PHY IRQs */ -#if defined(AU1XXX_PHY_STATIC_CONFIG) -# if defined(AU1XXX_PHY0_IRQ) - if (AU1XXX_PHY0_BUSID == aup->mac_id) - aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ; -# endif -# if defined(AU1XXX_PHY1_IRQ) - if (AU1XXX_PHY1_BUSID == aup->mac_id) - aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ; -# endif -#endif - mdiobus_register(aup->mii_bus); + if (aup->phy_static_config) + if (aup->phy_irq && aup->phy_busid == aup->mac_id) + aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq; + + err = mdiobus_register(aup->mii_bus); + if (err) { + printk(KERN_ERR DRV_NAME " failed to register MDIO bus\n"); + goto err_mdiobus_reg; + } - if (mii_probe(dev) != 0) { + if (mii_probe(dev) != 0) goto err_out; - } pDBfree = NULL; /* setup the data buffer descriptors and attach a buffer to each one */ @@ -1216,19 +1188,35 @@ static struct net_device * au1000_probe(int port_num) aup->tx_db_inuse[i] = pDB; } + dev->base_addr = base->start; + dev->irq = irq; + dev->netdev_ops = &au1000_netdev_ops; + SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops); + dev->watchdog_timeo = ETH_TX_TIMEOUT; + /* * The boot code uses the ethernet controller, so reset it to start * fresh. au1000_init() expects that the device is in reset state. */ reset_mac(dev); - return dev; + err = register_netdev(dev); + if (err) { + printk(KERN_ERR DRV_NAME "%s: Cannot register net device, aborting.\n", + dev->name); + goto err_out; + } + + printk("%s: Au1xx0 Ethernet found at 0x%lx, irq %d\n", + dev->name, (unsigned long)base->start, irq); + if (version_printed++ == 0) + printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR); + + return 0; err_out: - if (aup->mii_bus != NULL) { + if (aup->mii_bus != NULL) mdiobus_unregister(aup->mii_bus); - mdiobus_free(aup->mii_bus); - } /* here we should have a valid dev plus aup-> register addresses * so we can reset the mac properly.*/ @@ -1242,67 +1230,84 @@ err_out: if (aup->tx_db_inuse[i]) ReleaseDB(aup, aup->tx_db_inuse[i]); } +err_mdiobus_reg: + mdiobus_free(aup->mii_bus); +err_mdiobus_alloc: + iounmap(aup->enable); +err_remap2: + iounmap(aup->mac); +err_remap1: dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS), (void *)aup->vaddr, aup->dma_addr); - unregister_netdev(dev); +err_vaddr: free_netdev(dev); - release_mem_region( base, MAC_IOSIZE); - release_mem_region(macen, 4); - return NULL; +err_alloc: + release_mem_region(macen->start, resource_size(macen)); +err_request: + release_mem_region(base->start, resource_size(base)); +out: + return err; } -/* - * Setup the base address and interrupt of the Au1xxx ethernet macs - * based on cpu type and whether the interface is enabled in sys_pinfunc - * register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0. - */ -static int __init au1000_init_module(void) +static int __devexit au1000_remove(struct platform_device *pdev) { - int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4); - struct net_device *dev; - int i, found_one = 0; + struct net_device *dev = platform_get_drvdata(pdev); + struct au1000_private *aup = netdev_priv(dev); + int i; + struct resource *base, *macen; - num_ifs = NUM_ETH_INTERFACES - ni; + platform_set_drvdata(pdev, NULL); + + unregister_netdev(dev); + mdiobus_unregister(aup->mii_bus); + mdiobus_free(aup->mii_bus); + + for (i = 0; i < NUM_RX_DMA; i++) + if (aup->rx_db_inuse[i]) + ReleaseDB(aup, aup->rx_db_inuse[i]); + + for (i = 0; i < NUM_TX_DMA; i++) + if (aup->tx_db_inuse[i]) + ReleaseDB(aup, aup->tx_db_inuse[i]); + + dma_free_noncoherent(NULL, MAX_BUF_SIZE * + (NUM_TX_BUFFS + NUM_RX_BUFFS), + (void *)aup->vaddr, aup->dma_addr); + + iounmap(aup->mac); + iounmap(aup->enable); + + base = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(base->start, resource_size(base)); + + macen = platform_get_resource(pdev, IORESOURCE_MEM, 1); + release_mem_region(macen->start, resource_size(macen)); + + free_netdev(dev); - for(i = 0; i < num_ifs; i++) { - dev = au1000_probe(i); - iflist[i].dev = dev; - if (dev) - found_one++; - } - if (!found_one) - return -ENODEV; return 0; } -static void __exit au1000_cleanup_module(void) +static struct platform_driver au1000_eth_driver = { + .probe = au1000_probe, + .remove = __devexit_p(au1000_remove), + .driver = { + .name = "au1000-eth", + .owner = THIS_MODULE, + }, +}; +MODULE_ALIAS("platform:au1000-eth"); + + +static int __init au1000_init_module(void) +{ + return platform_driver_register(&au1000_eth_driver); +} + +static void __exit au1000_exit_module(void) { - int i, j; - struct net_device *dev; - struct au1000_private *aup; - - for (i = 0; i < num_ifs; i++) { - dev = iflist[i].dev; - if (dev) { - aup = netdev_priv(dev); - unregister_netdev(dev); - mdiobus_unregister(aup->mii_bus); - mdiobus_free(aup->mii_bus); - for (j = 0; j < NUM_RX_DMA; j++) - if (aup->rx_db_inuse[j]) - ReleaseDB(aup, aup->rx_db_inuse[j]); - for (j = 0; j < NUM_TX_DMA; j++) - if (aup->tx_db_inuse[j]) - ReleaseDB(aup, aup->tx_db_inuse[j]); - dma_free_noncoherent(NULL, MAX_BUF_SIZE * - (NUM_TX_BUFFS + NUM_RX_BUFFS), - (void *)aup->vaddr, aup->dma_addr); - release_mem_region(dev->base_addr, MAC_IOSIZE); - release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4); - free_netdev(dev); - } - } + platform_driver_unregister(&au1000_eth_driver); } module_init(au1000_init_module); -module_exit(au1000_cleanup_module); +module_exit(au1000_exit_module); diff --git a/drivers/net/au1000_eth.h b/drivers/net/au1000_eth.h index 824ecd5ff3a8..f9d29a29b8fd 100644 --- a/drivers/net/au1000_eth.h +++ b/drivers/net/au1000_eth.h @@ -108,6 +108,15 @@ struct au1000_private { struct phy_device *phy_dev; struct mii_bus *mii_bus; + /* PHY configuration */ + int phy_static_config; + int phy_search_highest_addr; + int phy1_search_mac0; + + int phy_addr; + int phy_busid; + int phy_irq; + /* These variables are just for quick access to certain regs addresses. */ volatile mac_reg_t *mac; /* mac registers */ volatile u32 *enable; /* address of MAC Enable Register */ diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c index 8d0be26f94e3..bf2072e54200 100644 --- a/drivers/net/cpmac.c +++ b/drivers/net/cpmac.c @@ -36,6 +36,7 @@ #include <linux/phy_fixed.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> +#include <linux/clk.h> #include <asm/gpio.h> #include <asm/atomic.h> @@ -294,9 +295,16 @@ static int cpmac_mdio_write(struct mii_bus *bus, int phy_id, static int cpmac_mdio_reset(struct mii_bus *bus) { + struct clk *cpmac_clk; + + cpmac_clk = clk_get(&bus->dev, "cpmac"); + if (IS_ERR(cpmac_clk)) { + printk(KERN_ERR "unable to get cpmac clock\n"); + return -1; + } ar7_device_reset(AR7_RESET_BIT_MDIO); cpmac_write(bus->priv, CPMAC_MDIO_CONTROL, MDIOC_ENABLE | - MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1)); + MDIOC_CLKDIV(clk_get_rate(cpmac_clk) / 2200000 - 1)); return 0; } diff --git a/drivers/net/irda/au1k_ir.c b/drivers/net/irda/au1k_ir.c index 9b2eebdbb25b..b5cbd39d0685 100644 --- a/drivers/net/irda/au1k_ir.c +++ b/drivers/net/irda/au1k_ir.c @@ -36,6 +36,7 @@ #include <asm/pb1000.h> #elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) #include <asm/db1x00.h> +#include <asm/mach-db1x00/bcsr.h> #else #error au1k_ir: unsupported board #endif @@ -66,10 +67,6 @@ static char version[] __devinitdata = #define RUN_AT(x) (jiffies + (x)) -#if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) -static BCSR * const bcsr = (BCSR *)0xAE000000; -#endif - static DEFINE_SPINLOCK(ir_lock); /* @@ -282,9 +279,8 @@ static int au1k_irda_net_init(struct net_device *dev) #if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) /* power on */ - bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK; - bcsr->resets |= BCSR_RESETS_IRDA_MODE_FULL; - au_sync(); + bcsr_mod(BCSR_RESETS, BCSR_RESETS_IRDA_MODE_MASK, + BCSR_RESETS_IRDA_MODE_FULL); #endif return 0; @@ -720,14 +716,14 @@ au1k_irda_set_speed(struct net_device *dev, int speed) if (speed == 4000000) { #if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) - bcsr->resets |= BCSR_RESETS_FIR_SEL; + bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_FIR_SEL); #else /* Pb1000 and Pb1100 */ writel(1<<13, CPLD_AUX1); #endif } else { #if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) - bcsr->resets &= ~BCSR_RESETS_FIR_SEL; + bcsr_mod(BCSR_RESETS, BCSR_RESETS_FIR_SEL, 0); #else /* Pb1000 and Pb1100 */ writel(readl(CPLD_AUX1) & ~(1<<13), CPLD_AUX1); #endif diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c index 6dd486d2977b..aa57cfd1e3fb 100644 --- a/drivers/net/pcmcia/smc91c92_cs.c +++ b/drivers/net/pcmcia/smc91c92_cs.c @@ -453,8 +453,7 @@ static int mhz_mfc_config(struct pcmcia_device *link) link->conf.Attributes |= CONF_ENABLE_SPKR; link->conf.Status = CCSR_AUDIO_ENA; - link->irq.Attributes = - IRQ_TYPE_DYNAMIC_SHARING; + link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; link->io.IOAddrLines = 16; link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; link->io.NumPorts2 = 8; @@ -652,8 +651,7 @@ static int osi_config(struct pcmcia_device *link) link->conf.Attributes |= CONF_ENABLE_SPKR; link->conf.Status = CCSR_AUDIO_ENA; - link->irq.Attributes = - IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; + link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; link->io.NumPorts1 = 64; link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; link->io.NumPorts2 = 8; diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig index 9f3adbd9f700..0a6601c76809 100644 --- a/drivers/pcmcia/Kconfig +++ b/drivers/pcmcia/Kconfig @@ -84,7 +84,7 @@ config YENTA tristate "CardBus yenta-compatible bridge support" depends on PCI select CARDBUS if !EMBEDDED - select PCCARD_NONSTATIC + select PCCARD_NONSTATIC if PCMCIA != n ---help--- This option enables support for CardBus host bridges. Virtually all modern PCMCIA bridges are CardBus compatible. A "bridge" is @@ -161,9 +161,8 @@ config TCIC config PCMCIA_M8XX tristate "MPC8xx PCMCIA support" - depends on PCMCIA && PPC && 8xx - select PCCARD_IODYN - select PCCARD_NONSTATIC + depends on PCCARD && PPC && 8xx + select PCCARD_IODYN if PCMCIA != n help Say Y here to include support for PowerPC 8xx series PCMCIA controller. @@ -174,6 +173,27 @@ config PCMCIA_AU1X00 tristate "Au1x00 pcmcia support" depends on SOC_AU1X00 && PCMCIA +config PCMCIA_ALCHEMY_DEVBOARD + tristate "Alchemy Db/Pb1xxx PCMCIA socket services" + depends on SOC_AU1X00 && PCMCIA + select 64BIT_PHYS_ADDR + help + Enable this driver of you want PCMCIA support on your Alchemy + Db1000, Db/Pb1100, Db/Pb1500, Db/Pb1550, Db/Pb1200 board. + NOT suitable for the PB1000! + + This driver is also available as a module called db1xxx_ss.ko + +config PCMCIA_XXS1500 + tristate "MyCable XXS1500 PCMCIA socket support" + depends on PCMCIA && MIPS_XXS1500 + select 64BIT_PHYS_ADDR + help + Support for the PCMCIA/CF socket interface on MyCable XXS1500 + systems. + + This driver is also available as a module called xxs1500_ss.ko + config PCMCIA_BCM63XX tristate "bcm63xx pcmcia support" depends on BCM63XX && PCMCIA @@ -238,14 +258,12 @@ config PCMCIA_PROBE config M32R_PCC bool "M32R PCMCIA I/F" depends on M32R && CHIP_M32700 && PCMCIA - select PCCARD_NONSTATIC help Say Y here to use the M32R PCMCIA controller. config M32R_CFC bool "M32R CF I/F Controller" depends on M32R && (PLAT_USRV || PLAT_M32700UT || PLAT_MAPPI2 || PLAT_MAPPI3 || PLAT_OPSPUT) - select PCCARD_NONSTATIC help Say Y here to use the M32R CompactFlash controller. diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile index 83ff802de544..381b031d9d75 100644 --- a/drivers/pcmcia/Makefile +++ b/drivers/pcmcia/Makefile @@ -2,11 +2,11 @@ # Makefile for the kernel pcmcia subsystem (c/o David Hinds) # -pcmcia_core-y += cs.o cistpl.o rsrc_mgr.o socket_sysfs.o +pcmcia_core-y += cs.o rsrc_mgr.o socket_sysfs.o pcmcia_core-$(CONFIG_CARDBUS) += cardbus.o obj-$(CONFIG_PCCARD) += pcmcia_core.o -pcmcia-y += ds.o pcmcia_resource.o +pcmcia-y += ds.o pcmcia_resource.o cistpl.o pcmcia-$(CONFIG_PCMCIA_IOCTL) += pcmcia_ioctl.o obj-$(CONFIG_PCMCIA) += pcmcia.o @@ -35,18 +35,10 @@ obj-$(CONFIG_OMAP_CF) += omap_cf.o obj-$(CONFIG_BFIN_CFPCMCIA) += bfin_cf_pcmcia.o obj-$(CONFIG_AT91_CF) += at91_cf.o obj-$(CONFIG_ELECTRA_CF) += electra_cf.o +obj-$(CONFIG_PCMCIA_ALCHEMY_DEVBOARD) += db1xxx_ss.o au1x00_ss-y += au1000_generic.o au1x00_ss-$(CONFIG_MIPS_PB1000) += au1000_pb1x00.o -au1x00_ss-$(CONFIG_MIPS_PB1100) += au1000_pb1x00.o -au1x00_ss-$(CONFIG_MIPS_PB1200) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_PB1500) += au1000_pb1x00.o -au1x00_ss-$(CONFIG_MIPS_DB1000) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_DB1100) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_DB1200) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_DB1500) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_DB1550) += au1000_db1x00.o -au1x00_ss-$(CONFIG_MIPS_XXS1500) += au1000_xxs1500.o sa1111_cs-y += sa1111_generic.o sa1111_cs-$(CONFIG_ASSABET_NEPONSET) += sa1100_neponset.o @@ -76,3 +68,5 @@ pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y) + +obj-$(CONFIG_PCMCIA_XXS1500) += xxs1500_ss.o diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c index e1dccedc5960..5d228071ec69 100644 --- a/drivers/pcmcia/at91_cf.c +++ b/drivers/pcmcia/at91_cf.c @@ -52,8 +52,6 @@ struct at91_cf_socket { unsigned long phys_baseaddr; }; -#define SZ_2K (2 * SZ_1K) - static inline int at91_cf_present(struct at91_cf_socket *cf) { return !gpio_get_value(cf->board->det_pin); diff --git a/drivers/pcmcia/au1000_db1x00.c b/drivers/pcmcia/au1000_db1x00.c deleted file mode 100644 index c78d77fd7e3b..000000000000 --- a/drivers/pcmcia/au1000_db1x00.c +++ /dev/null @@ -1,305 +0,0 @@ -/* - * - * Alchemy Semi Db1x00 boards specific pcmcia routines. - * - * Copyright 2002 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * Copyright 2004 Pete Popov, updated the driver to 2.6. - * Followed the sa11xx API and largely copied many of the hardware - * independent functions. - * - * ######################################################################## - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## - * - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/interrupt.h> -#include <linux/device.h> -#include <linux/init.h> - -#include <asm/irq.h> -#include <asm/signal.h> -#include <asm/mach-au1x00/au1000.h> - -#if defined(CONFIG_MIPS_DB1200) - #include <db1200.h> -#elif defined(CONFIG_MIPS_PB1200) - #include <pb1200.h> -#else - #include <asm/mach-db1x00/db1x00.h> - static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR; -#endif - -#include "au1000_generic.h" - -#if 0 -#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) -#else -#define debug(x,args...) -#endif - - -struct au1000_pcmcia_socket au1000_pcmcia_socket[PCMCIA_NUM_SOCKS]; -extern int au1x00_pcmcia_socket_probe(struct device *, struct pcmcia_low_level *, int, int); - -static int db1x00_pcmcia_hw_init(struct au1000_pcmcia_socket *skt) -{ -#ifdef CONFIG_MIPS_DB1550 - skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_3; -#elif defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200) - skt->irq = skt->nr ? BOARD_PC1_INT : BOARD_PC0_INT; -#else - skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_2; -#endif - return 0; -} - -static void db1x00_pcmcia_shutdown(struct au1000_pcmcia_socket *skt) -{ - bcsr->pcmcia = 0; /* turn off power */ - au_sync_delay(2); -} - -static void -db1x00_pcmcia_socket_state(struct au1000_pcmcia_socket *skt, struct pcmcia_state *state) -{ - u32 inserted; - unsigned char vs; - - state->ready = 0; - state->vs_Xv = 0; - state->vs_3v = 0; - state->detect = 0; - - switch (skt->nr) { - case 0: - vs = bcsr->status & 0x3; -#if defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200) - inserted = BOARD_CARD_INSERTED(0); -#else - inserted = !(bcsr->status & (1<<4)); -#endif - break; - case 1: - vs = (bcsr->status & 0xC)>>2; -#if defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200) - inserted = BOARD_CARD_INSERTED(1); -#else - inserted = !(bcsr->status & (1<<5)); -#endif - break; - default:/* should never happen */ - return; - } - - if (inserted) - debug("db1x00 socket %d: inserted %d, vs %d pcmcia %x\n", - skt->nr, inserted, vs, bcsr->pcmcia); - - if (inserted) { - switch (vs) { - case 0: - case 2: - state->vs_3v=1; - break; - case 3: /* 5V */ - break; - default: - /* return without setting 'detect' */ - printk(KERN_ERR "db1x00 bad VS (%d)\n", - vs); - } - state->detect = 1; - state->ready = 1; - } - else { - /* if the card was previously inserted and then ejected, - * we should turn off power to it - */ - if ((skt->nr == 0) && (bcsr->pcmcia & BCSR_PCMCIA_PC0RST)) { - bcsr->pcmcia &= ~(BCSR_PCMCIA_PC0RST | - BCSR_PCMCIA_PC0DRVEN | - BCSR_PCMCIA_PC0VPP | - BCSR_PCMCIA_PC0VCC); - au_sync_delay(10); - } - else if ((skt->nr == 1) && bcsr->pcmcia & BCSR_PCMCIA_PC1RST) { - bcsr->pcmcia &= ~(BCSR_PCMCIA_PC1RST | - BCSR_PCMCIA_PC1DRVEN | - BCSR_PCMCIA_PC1VPP | - BCSR_PCMCIA_PC1VCC); - au_sync_delay(10); - } - } - - state->bvd1=1; - state->bvd2=1; - state->wrprot=0; -} - -static int -db1x00_pcmcia_configure_socket(struct au1000_pcmcia_socket *skt, struct socket_state_t *state) -{ - u16 pwr; - int sock = skt->nr; - - debug("config_skt %d Vcc %dV Vpp %dV, reset %d\n", - sock, state->Vcc, state->Vpp, - state->flags & SS_RESET); - - /* pcmcia reg was set to zero at init time. Be careful when - * initializing a socket not to wipe out the settings of the - * other socket. - */ - pwr = bcsr->pcmcia; - pwr &= ~(0xf << sock*8); /* clear voltage settings */ - - state->Vpp = 0; - switch(state->Vcc){ - case 0: /* Vcc 0 */ - pwr |= SET_VCC_VPP(0,0,sock); - break; - case 50: /* Vcc 5V */ - switch(state->Vpp) { - case 0: - pwr |= SET_VCC_VPP(2,0,sock); - break; - case 50: - pwr |= SET_VCC_VPP(2,1,sock); - break; - case 12: - pwr |= SET_VCC_VPP(2,2,sock); - break; - case 33: - default: - pwr |= SET_VCC_VPP(0,0,sock); - printk("%s: bad Vcc/Vpp (%d:%d)\n", - __func__, - state->Vcc, - state->Vpp); - break; - } - break; - case 33: /* Vcc 3.3V */ - switch(state->Vpp) { - case 0: - pwr |= SET_VCC_VPP(1,0,sock); - break; - case 12: - pwr |= SET_VCC_VPP(1,2,sock); - break; - case 33: - pwr |= SET_VCC_VPP(1,1,sock); - break; - case 50: - default: - pwr |= SET_VCC_VPP(0,0,sock); - printk("%s: bad Vcc/Vpp (%d:%d)\n", - __func__, - state->Vcc, - state->Vpp); - break; - } - break; - default: /* what's this ? */ - pwr |= SET_VCC_VPP(0,0,sock); - printk(KERN_ERR "%s: bad Vcc %d\n", - __func__, state->Vcc); - break; - } - - bcsr->pcmcia = pwr; - au_sync_delay(300); - - if (sock == 0) { - if (!(state->flags & SS_RESET)) { - pwr |= BCSR_PCMCIA_PC0DRVEN; - bcsr->pcmcia = pwr; - au_sync_delay(300); - pwr |= BCSR_PCMCIA_PC0RST; - bcsr->pcmcia = pwr; - au_sync_delay(100); - } - else { - pwr &= ~(BCSR_PCMCIA_PC0RST | BCSR_PCMCIA_PC0DRVEN); - bcsr->pcmcia = pwr; - au_sync_delay(100); - } - } - else { - if (!(state->flags & SS_RESET)) { - pwr |= BCSR_PCMCIA_PC1DRVEN; - bcsr->pcmcia = pwr; - au_sync_delay(300); - pwr |= BCSR_PCMCIA_PC1RST; - bcsr->pcmcia = pwr; - au_sync_delay(100); - } - else { - pwr &= ~(BCSR_PCMCIA_PC1RST | BCSR_PCMCIA_PC1DRVEN); - bcsr->pcmcia = pwr; - au_sync_delay(100); - } - } - return 0; -} - -/* - * Enable card status IRQs on (re-)initialisation. This can - * be called at initialisation, power management event, or - * pcmcia event. - */ -void db1x00_socket_init(struct au1000_pcmcia_socket *skt) -{ - /* nothing to do for now */ -} - -/* - * Disable card status IRQs and PCMCIA bus on suspend. - */ -void db1x00_socket_suspend(struct au1000_pcmcia_socket *skt) -{ - /* nothing to do for now */ -} - -struct pcmcia_low_level db1x00_pcmcia_ops = { - .owner = THIS_MODULE, - - .hw_init = db1x00_pcmcia_hw_init, - .hw_shutdown = db1x00_pcmcia_shutdown, - - .socket_state = db1x00_pcmcia_socket_state, - .configure_socket = db1x00_pcmcia_configure_socket, - - .socket_init = db1x00_socket_init, - .socket_suspend = db1x00_socket_suspend -}; - -int au1x_board_init(struct device *dev) -{ - int ret = -ENODEV; - bcsr->pcmcia = 0; /* turn off power, if it's not already off */ - au_sync_delay(2); - ret = au1x00_pcmcia_socket_probe(dev, &db1x00_pcmcia_ops, 0, 2); - return ret; -} diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c index 02088704ac2c..171c8a654887 100644 --- a/drivers/pcmcia/au1000_generic.c +++ b/drivers/pcmcia/au1000_generic.c @@ -405,18 +405,16 @@ int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops, skt->virt_io = (void *) (ioremap((phys_t)AU1X_SOCK0_IO, 0x1000) - (u32)mips_io_port_base); - skt->phys_attr = AU1X_SOCK0_PSEUDO_PHYS_ATTR; - skt->phys_mem = AU1X_SOCK0_PSEUDO_PHYS_MEM; + skt->phys_attr = AU1X_SOCK0_PHYS_ATTR; + skt->phys_mem = AU1X_SOCK0_PHYS_MEM; } -#ifndef CONFIG_MIPS_XXS1500 else { skt->virt_io = (void *) (ioremap((phys_t)AU1X_SOCK1_IO, 0x1000) - (u32)mips_io_port_base); - skt->phys_attr = AU1X_SOCK1_PSEUDO_PHYS_ATTR; - skt->phys_mem = AU1X_SOCK1_PSEUDO_PHYS_MEM; + skt->phys_attr = AU1X_SOCK1_PHYS_ATTR; + skt->phys_mem = AU1X_SOCK1_PHYS_MEM; } -#endif pcmcia_base_vaddrs[i] = (u32 *)skt->virt_io; ret = ops->hw_init(skt); diff --git a/drivers/pcmcia/au1000_generic.h b/drivers/pcmcia/au1000_generic.h index 13a4fbc58711..a324d329dea6 100644 --- a/drivers/pcmcia/au1000_generic.h +++ b/drivers/pcmcia/au1000_generic.h @@ -36,30 +36,14 @@ #define AU1X_SOCK0_IO 0xF00000000ULL #define AU1X_SOCK0_PHYS_ATTR 0xF40000000ULL #define AU1X_SOCK0_PHYS_MEM 0xF80000000ULL -/* pseudo 32 bit phys addresses, which get fixed up to the - * real 36 bit address in fixup_bigphys_addr() */ -#define AU1X_SOCK0_PSEUDO_PHYS_ATTR 0xF4000000 -#define AU1X_SOCK0_PSEUDO_PHYS_MEM 0xF8000000 /* pcmcia socket 1 needs external glue logic so the memory map * differs from board to board. */ -#if defined(CONFIG_MIPS_PB1000) || defined(CONFIG_MIPS_PB1100) || \ - defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_PB1550) || \ - defined(CONFIG_MIPS_PB1200) +#if defined(CONFIG_MIPS_PB1000) #define AU1X_SOCK1_IO 0xF08000000ULL #define AU1X_SOCK1_PHYS_ATTR 0xF48000000ULL #define AU1X_SOCK1_PHYS_MEM 0xF88000000ULL -#define AU1X_SOCK1_PSEUDO_PHYS_ATTR 0xF4800000 -#define AU1X_SOCK1_PSEUDO_PHYS_MEM 0xF8800000 -#elif defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || \ - defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550) || \ - defined(CONFIG_MIPS_DB1200) -#define AU1X_SOCK1_IO 0xF04000000ULL -#define AU1X_SOCK1_PHYS_ATTR 0xF44000000ULL -#define AU1X_SOCK1_PHYS_MEM 0xF84000000ULL -#define AU1X_SOCK1_PSEUDO_PHYS_ATTR 0xF4400000 -#define AU1X_SOCK1_PSEUDO_PHYS_MEM 0xF8400000 #endif struct pcmcia_state { diff --git a/drivers/pcmcia/au1000_pb1x00.c b/drivers/pcmcia/au1000_pb1x00.c index b1984ed72d1d..5a979cb8f3e6 100644 --- a/drivers/pcmcia/au1000_pb1x00.c +++ b/drivers/pcmcia/au1000_pb1x00.c @@ -1,6 +1,6 @@ /* * - * Alchemy Semi Pb1x00 boards specific pcmcia routines. + * Alchemy Semi Pb1000 boards specific pcmcia routines. * * Copyright 2002 MontaVista Software Inc. * Author: MontaVista Software, Inc. @@ -46,20 +46,11 @@ #define debug(fmt, arg...) do { } while (0) -#ifdef CONFIG_MIPS_PB1000 #include <asm/pb1000.h> #define PCMCIA_IRQ AU1000_GPIO_15 -#elif defined (CONFIG_MIPS_PB1500) -#include <asm/pb1500.h> -#define PCMCIA_IRQ AU1500_GPIO_203 -#elif defined (CONFIG_MIPS_PB1100) -#include <asm/pb1100.h> -#define PCMCIA_IRQ AU1000_GPIO_11 -#endif static int pb1x00_pcmcia_init(struct pcmcia_init *init) { -#ifdef CONFIG_MIPS_PB1000 u16 pcr; pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; @@ -74,21 +65,10 @@ static int pb1x00_pcmcia_init(struct pcmcia_init *init) au_sync_delay(20); return PCMCIA_NUM_SOCKS; - -#else /* fixme -- take care of the Pb1500 at some point */ - - u16 pcr; - pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */ - pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(500); - return PCMCIA_NUM_SOCKS; -#endif } static int pb1x00_pcmcia_shutdown(void) { -#ifdef CONFIG_MIPS_PB1000 u16 pcr; pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0); @@ -96,14 +76,6 @@ static int pb1x00_pcmcia_shutdown(void) au_writel(pcr, PB1000_PCR); au_sync_delay(20); return 0; -#else - u16 pcr; - pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */ - pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(2); - return 0; -#endif } static int @@ -112,21 +84,11 @@ pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) u32 inserted0, inserted1; u16 vs0, vs1; -#ifdef CONFIG_MIPS_PB1000 vs0 = vs1 = (u16)au_readl(PB1000_ACR1); inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2)); inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2)); vs0 = (vs0 >> 4) & 0x3; vs1 = (vs1 >> 12) & 0x3; -#else - vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3; -#ifdef CONFIG_MIPS_PB1500 - inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */ -#else /* Pb1100 */ - inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */ -#endif - inserted1 = 0; -#endif state->ready = 0; state->vs_Xv = 0; @@ -203,7 +165,6 @@ pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure) if(configure->sock > PCMCIA_MAX_SOCK) return -1; -#ifdef CONFIG_MIPS_PB1000 pcr = au_readl(PB1000_PCR); if (configure->sock == 0) { @@ -323,84 +284,6 @@ pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure) au_writel(pcr, PB1000_PCR); au_sync_delay(300); -#else - - pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; - - debug("Vcc %dV Vpp %dV, pcr %x, reset %d\n", - configure->vcc, configure->vpp, pcr, configure->reset); - - - switch(configure->vcc){ - case 0: /* Vcc 0 */ - pcr |= SET_VCC_VPP(0,0); - break; - case 50: /* Vcc 5V */ - switch(configure->vpp) { - case 0: - pcr |= SET_VCC_VPP(2,0); - break; - case 50: - pcr |= SET_VCC_VPP(2,1); - break; - case 12: - pcr |= SET_VCC_VPP(2,2); - break; - case 33: - default: - pcr |= SET_VCC_VPP(0,0); - printk("%s: bad Vcc/Vpp (%d:%d)\n", - __func__, - configure->vcc, - configure->vpp); - break; - } - break; - case 33: /* Vcc 3.3V */ - switch(configure->vpp) { - case 0: - pcr |= SET_VCC_VPP(1,0); - break; - case 12: - pcr |= SET_VCC_VPP(1,2); - break; - case 33: - pcr |= SET_VCC_VPP(1,1); - break; - case 50: - default: - pcr |= SET_VCC_VPP(0,0); - printk("%s: bad Vcc/Vpp (%d:%d)\n", - __func__, - configure->vcc, - configure->vpp); - break; - } - break; - default: /* what's this ? */ - pcr |= SET_VCC_VPP(0,0); - printk(KERN_ERR "%s: bad Vcc %d\n", - __func__, configure->vcc); - break; - } - - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(300); - - if (!configure->reset) { - pcr |= PC_DRV_EN; - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(100); - pcr |= PC_DEASSERT_RST; - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(100); - } - else { - pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); - au_writew(pcr, PCMCIA_BOARD_REG); - au_sync_delay(100); - } -#endif return 0; } diff --git a/drivers/pcmcia/au1000_xxs1500.c b/drivers/pcmcia/au1000_xxs1500.c deleted file mode 100644 index b43d47b50819..000000000000 --- a/drivers/pcmcia/au1000_xxs1500.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * - * MyCable board specific pcmcia routines. - * - * Copyright 2003 MontaVista Software Inc. - * Author: Pete Popov, MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * ######################################################################## - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## - * - * - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/kernel.h> -#include <linux/timer.h> -#include <linux/mm.h> -#include <linux/proc_fs.h> -#include <linux/types.h> - -#include <pcmcia/cs_types.h> -#include <pcmcia/cs.h> -#include <pcmcia/ss.h> -#include <pcmcia/cistpl.h> -#include <pcmcia/bus_ops.h> - -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/system.h> - -#include <asm/au1000.h> -#include <asm/au1000_pcmcia.h> - -#define PCMCIA_MAX_SOCK 0 -#define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1) -#define PCMCIA_IRQ AU1000_GPIO_4 - -#if 0 -#define DEBUG(x, args...) printk(__func__ ": " x, ##args) -#else -#define DEBUG(x,args...) -#endif - -static int xxs1500_pcmcia_init(struct pcmcia_init *init) -{ - return PCMCIA_NUM_SOCKS; -} - -static int xxs1500_pcmcia_shutdown(void) -{ - /* turn off power */ - au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), - GPIO2_OUTPUT); - au_sync_delay(100); - - /* assert reset */ - au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), - GPIO2_OUTPUT); - au_sync_delay(100); - return 0; -} - - -static int -xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) -{ - u32 inserted; u32 vs; - unsigned long gpio, gpio2; - - if(sock > PCMCIA_MAX_SOCK) return -1; - - gpio = au_readl(SYS_PINSTATERD); - gpio2 = au_readl(GPIO2_PINSTATE); - - vs = gpio2 & ((1<<8) | (1<<9)); - inserted = (!(gpio & 0x1) && !(gpio & 0x2)); - - state->ready = 0; - state->vs_Xv = 0; - state->vs_3v = 0; - state->detect = 0; - - if (inserted) { - switch (vs) { - case 0: - case 1: - case 2: - state->vs_3v=1; - break; - case 3: /* 5V */ - default: - /* return without setting 'detect' */ - printk(KERN_ERR "au1x00_cs: unsupported VS\n", - vs); - return; - } - state->detect = 1; - } - - if (state->detect) { - state->ready = 1; - } - - state->bvd1= gpio2 & (1<<10); - state->bvd2 = gpio2 & (1<<11); - state->wrprot=0; - return 1; -} - - -static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info) -{ - - if(info->sock > PCMCIA_MAX_SOCK) return -1; - info->irq = PCMCIA_IRQ; - return 0; -} - - -static int -xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure) -{ - - if(configure->sock > PCMCIA_MAX_SOCK) return -1; - - DEBUG("Vcc %dV Vpp %dV, reset %d\n", - configure->vcc, configure->vpp, configure->reset); - - switch(configure->vcc){ - case 33: /* Vcc 3.3V */ - /* turn on power */ - DEBUG("turn on power\n"); - au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30), - GPIO2_OUTPUT); - au_sync_delay(100); - break; - case 50: /* Vcc 5V */ - default: /* what's this ? */ - printk(KERN_ERR "au1x00_cs: unsupported VCC\n"); - case 0: /* Vcc 0 */ - /* turn off power */ - au_sync_delay(100); - au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), - GPIO2_OUTPUT); - break; - } - - if (!configure->reset) { - DEBUG("deassert reset\n"); - au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20), - GPIO2_OUTPUT); - au_sync_delay(100); - au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21), - GPIO2_OUTPUT); - } - else { - DEBUG("assert reset\n"); - au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), - GPIO2_OUTPUT); - } - au_sync_delay(100); - return 0; -} - -struct pcmcia_low_level xxs1500_pcmcia_ops = { - xxs1500_pcmcia_init, - xxs1500_pcmcia_shutdown, - xxs1500_pcmcia_socket_state, - xxs1500_pcmcia_get_irq_info, - xxs1500_pcmcia_configure_socket -}; diff --git a/drivers/pcmcia/bfin_cf_pcmcia.c b/drivers/pcmcia/bfin_cf_pcmcia.c index 300b368605c9..2482ce7ac6dc 100644 --- a/drivers/pcmcia/bfin_cf_pcmcia.c +++ b/drivers/pcmcia/bfin_cf_pcmcia.c @@ -205,7 +205,7 @@ static int __devinit bfin_cf_probe(struct platform_device *pdev) dev_info(&pdev->dev, "Blackfin CompactFlash/PCMCIA Socket Driver\n"); irq = platform_get_irq(pdev, 0); - if (!irq) + if (irq <= 0) return -EINVAL; cd_pfx = platform_get_irq(pdev, 1); /*Card Detect GPIO PIN */ diff --git a/drivers/pcmcia/cardbus.c b/drivers/pcmcia/cardbus.c index d99f846451a3..ac0686efbf75 100644 --- a/drivers/pcmcia/cardbus.c +++ b/drivers/pcmcia/cardbus.c @@ -20,170 +20,12 @@ */ -#include <linux/module.h> #include <linux/kernel.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/mm.h> +#include <linux/module.h> #include <linux/pci.h> -#include <linux/ioport.h> -#include <linux/io.h> -#include <asm/irq.h> -#include <pcmcia/cs_types.h> #include <pcmcia/ss.h> -#include <pcmcia/cs.h> -#include <pcmcia/cistpl.h> -#include "cs_internal.h" - -/*====================================================================*/ - -/* Offsets in the Expansion ROM Image Header */ -#define ROM_SIGNATURE 0x0000 /* 2 bytes */ -#define ROM_DATA_PTR 0x0018 /* 2 bytes */ - -/* Offsets in the CardBus PC Card Data Structure */ -#define PCDATA_SIGNATURE 0x0000 /* 4 bytes */ -#define PCDATA_VPD_PTR 0x0008 /* 2 bytes */ -#define PCDATA_LENGTH 0x000a /* 2 bytes */ -#define PCDATA_REVISION 0x000c -#define PCDATA_IMAGE_SZ 0x0010 /* 2 bytes */ -#define PCDATA_ROM_LEVEL 0x0012 /* 2 bytes */ -#define PCDATA_CODE_TYPE 0x0014 -#define PCDATA_INDICATOR 0x0015 - -/*===================================================================== - - Expansion ROM's have a special layout, and pointers specify an - image number and an offset within that image. xlate_rom_addr() - converts an image/offset address to an absolute offset from the - ROM's base address. - -=====================================================================*/ - -static u_int xlate_rom_addr(void __iomem *b, u_int addr) -{ - u_int img = 0, ofs = 0, sz; - u_short data; - while ((readb(b) == 0x55) && (readb(b + 1) == 0xaa)) { - if (img == (addr >> 28)) - return (addr & 0x0fffffff) + ofs; - data = readb(b + ROM_DATA_PTR) + (readb(b + ROM_DATA_PTR + 1) << 8); - sz = 512 * (readb(b + data + PCDATA_IMAGE_SZ) + - (readb(b + data + PCDATA_IMAGE_SZ + 1) << 8)); - if ((sz == 0) || (readb(b + data + PCDATA_INDICATOR) & 0x80)) - break; - b += sz; - ofs += sz; - img++; - } - return 0; -} - -/*===================================================================== - - These are similar to setup_cis_mem and release_cis_mem for 16-bit - cards. The "result" that is used externally is the cb_cis_virt - pointer in the struct pcmcia_socket structure. - -=====================================================================*/ - -static void cb_release_cis_mem(struct pcmcia_socket *s) -{ - if (s->cb_cis_virt) { - dev_dbg(&s->dev, "cb_release_cis_mem()\n"); - iounmap(s->cb_cis_virt); - s->cb_cis_virt = NULL; - s->cb_cis_res = NULL; - } -} - -static int cb_setup_cis_mem(struct pcmcia_socket *s, struct resource *res) -{ - unsigned int start, size; - - if (res == s->cb_cis_res) - return 0; - - if (s->cb_cis_res) - cb_release_cis_mem(s); - - start = res->start; - size = res->end - start + 1; - s->cb_cis_virt = ioremap(start, size); - - if (!s->cb_cis_virt) - return -1; - - s->cb_cis_res = res; - - return 0; -} - -/*===================================================================== - - This is used by the CIS processing code to read CIS information - from a CardBus device. - -=====================================================================*/ - -int read_cb_mem(struct pcmcia_socket *s, int space, u_int addr, u_int len, - void *ptr) -{ - struct pci_dev *dev; - struct resource *res; - - dev_dbg(&s->dev, "read_cb_mem(%d, %#x, %u)\n", space, addr, len); - dev = pci_get_slot(s->cb_dev->subordinate, 0); - if (!dev) - goto fail; - - /* Config space? */ - if (space == 0) { - if (addr + len > 0x100) - goto failput; - for (; len; addr++, ptr++, len--) - pci_read_config_byte(dev, addr, ptr); - return 0; - } - - res = dev->resource + space - 1; - - pci_dev_put(dev); - - if (!res->flags) - goto fail; - - if (cb_setup_cis_mem(s, res) != 0) - goto fail; - - if (space == 7) { - addr = xlate_rom_addr(s->cb_cis_virt, addr); - if (addr == 0) - goto fail; - } - - if (addr + len > res->end - res->start) - goto fail; - - memcpy_fromio(ptr, s->cb_cis_virt + addr, len); - return 0; - -failput: - pci_dev_put(dev); -fail: - memset(ptr, 0xff, len); - return -1; -} - -/*===================================================================== - - cb_alloc() and cb_free() allocate and free the kernel data - structures for a Cardbus device, and handle the lowest level PCI - device setup issues. - -=====================================================================*/ static void cardbus_config_irq_and_cls(struct pci_bus *bus, int irq) { @@ -215,6 +57,13 @@ static void cardbus_config_irq_and_cls(struct pci_bus *bus, int irq) } } +/** + * cb_alloc() - add CardBus device + * @s: the pcmcia_socket where the CardBus device is located + * + * cb_alloc() allocates the kernel data structures for a Cardbus device + * and handles the lowest level PCI device setup issues. + */ int __ref cb_alloc(struct pcmcia_socket *s) { struct pci_bus *bus = s->cb_dev->subordinate; @@ -249,12 +98,16 @@ int __ref cb_alloc(struct pcmcia_socket *s) return 0; } +/** + * cb_free() - remove CardBus device + * @s: the pcmcia_socket where the CardBus device was located + * + * cb_free() handles the lowest level PCI device cleanup. + */ void cb_free(struct pcmcia_socket *s) { struct pci_dev *bridge = s->cb_dev; - cb_release_cis_mem(s); - if (bridge) pci_remove_behind_bridge(bridge); } diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index 25b1cd219e37..2f3622dd4b69 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -64,6 +64,7 @@ module_param(cis_width, int, 0444); void release_cis_mem(struct pcmcia_socket *s) { + mutex_lock(&s->ops_mutex); if (s->cis_mem.flags & MAP_ACTIVE) { s->cis_mem.flags &= ~MAP_ACTIVE; s->ops->set_mem_map(s, &s->cis_mem); @@ -75,13 +76,15 @@ void release_cis_mem(struct pcmcia_socket *s) iounmap(s->cis_virt); s->cis_virt = NULL; } + mutex_unlock(&s->ops_mutex); } -EXPORT_SYMBOL(release_cis_mem); /* * Map the card memory at "card_offset" into virtual space. * If flags & MAP_ATTRIB, map the attribute space, otherwise * map the memory space. + * + * Must be called with ops_mutex held. */ static void __iomem * set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags) @@ -140,6 +143,7 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, dev_dbg(&s->dev, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len); + mutex_lock(&s->ops_mutex); if (attr & IS_INDIRECT) { /* Indirect accesses use a bunch of special registers at fixed locations in common memory */ @@ -151,7 +155,9 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0)); if (!sys) { + dev_dbg(&s->dev, "could not map memory\n"); memset(ptr, 0xff, len); + mutex_unlock(&s->ops_mutex); return -1; } @@ -165,6 +171,9 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, } else { u_int inc = 1, card_offset, flags; + if (addr > CISTPL_MAX_CIS_SIZE) + dev_dbg(&s->dev, "attempt to read CIS mem at addr %#x", addr); + flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0); if (attr) { flags |= MAP_ATTRIB; @@ -176,7 +185,9 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, while (len) { sys = set_cis_map(s, card_offset, flags); if (!sys) { + dev_dbg(&s->dev, "could not map memory\n"); memset(ptr, 0xff, len); + mutex_unlock(&s->ops_mutex); return -1; } end = sys + s->map_size; @@ -190,12 +201,12 @@ int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, addr = 0; } } + mutex_unlock(&s->ops_mutex); dev_dbg(&s->dev, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n", *(u_char *)(ptr+0), *(u_char *)(ptr+1), *(u_char *)(ptr+2), *(u_char *)(ptr+3)); return 0; } -EXPORT_SYMBOL(pcmcia_read_cis_mem); void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, @@ -206,6 +217,7 @@ void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, dev_dbg(&s->dev, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len); + mutex_lock(&s->ops_mutex); if (attr & IS_INDIRECT) { /* Indirect accesses use a bunch of special registers at fixed locations in common memory */ @@ -216,8 +228,11 @@ void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, } sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0)); - if (!sys) + if (!sys) { + dev_dbg(&s->dev, "could not map memory\n"); + mutex_unlock(&s->ops_mutex); return; /* FIXME: Error */ + } writeb(flags, sys+CISREG_ICTRL0); writeb(addr & 0xff, sys+CISREG_IADDR0); @@ -239,8 +254,11 @@ void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, card_offset = addr & ~(s->map_size-1); while (len) { sys = set_cis_map(s, card_offset, flags); - if (!sys) + if (!sys) { + dev_dbg(&s->dev, "could not map memory\n"); + mutex_unlock(&s->ops_mutex); return; /* FIXME: error */ + } end = sys + s->map_size; sys = sys + (addr & (s->map_size-1)); @@ -253,8 +271,8 @@ void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, addr = 0; } } + mutex_unlock(&s->ops_mutex); } -EXPORT_SYMBOL(pcmcia_write_cis_mem); /*====================================================================== @@ -265,32 +283,36 @@ EXPORT_SYMBOL(pcmcia_write_cis_mem); ======================================================================*/ -static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, - size_t len, void *ptr) +static int read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, + size_t len, void *ptr) { - struct cis_cache_entry *cis; - int ret; + struct cis_cache_entry *cis; + int ret = 0; - if (s->fake_cis) { - if (s->fake_cis_len >= addr+len) - memcpy(ptr, s->fake_cis+addr, len); - else - memset(ptr, 0xff, len); - return; - } + if (s->state & SOCKET_CARDBUS) + return -EINVAL; - list_for_each_entry(cis, &s->cis_cache, node) { - if (cis->addr == addr && cis->len == len && cis->attr == attr) { - memcpy(ptr, cis->cache, len); - return; + mutex_lock(&s->ops_mutex); + if (s->fake_cis) { + if (s->fake_cis_len >= addr+len) + memcpy(ptr, s->fake_cis+addr, len); + else { + memset(ptr, 0xff, len); + ret = -EINVAL; + } + mutex_unlock(&s->ops_mutex); + return ret; } - } -#ifdef CONFIG_CARDBUS - if (s->state & SOCKET_CARDBUS) - ret = read_cb_mem(s, attr, addr, len, ptr); - else -#endif + list_for_each_entry(cis, &s->cis_cache, node) { + if (cis->addr == addr && cis->len == len && cis->attr == attr) { + memcpy(ptr, cis->cache, len); + mutex_unlock(&s->ops_mutex); + return 0; + } + } + mutex_unlock(&s->ops_mutex); + ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr); if (ret == 0) { @@ -301,9 +323,12 @@ static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, cis->len = len; cis->attr = attr; memcpy(cis->cache, ptr, len); + mutex_lock(&s->ops_mutex); list_add(&cis->node, &s->cis_cache); + mutex_unlock(&s->ops_mutex); } } + return ret; } static void @@ -311,32 +336,35 @@ remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len) { struct cis_cache_entry *cis; + mutex_lock(&s->ops_mutex); list_for_each_entry(cis, &s->cis_cache, node) if (cis->addr == addr && cis->len == len && cis->attr == attr) { list_del(&cis->node); kfree(cis); break; } + mutex_unlock(&s->ops_mutex); } +/** + * destroy_cis_cache() - destroy the CIS cache + * @s: pcmcia_socket for which CIS cache shall be destroyed + * + * This destroys the CIS cache but keeps any fake CIS alive. Must be + * called with ops_mutex held. + */ + void destroy_cis_cache(struct pcmcia_socket *s) { struct list_head *l, *n; + struct cis_cache_entry *cis; list_for_each_safe(l, n, &s->cis_cache) { - struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node); - + cis = list_entry(l, struct cis_cache_entry, node); list_del(&cis->node); kfree(cis); } - - /* - * If there was a fake CIS, destroy that as well. - */ - kfree(s->fake_cis); - s->fake_cis = NULL; } -EXPORT_SYMBOL(destroy_cis_cache); /*====================================================================== @@ -349,6 +377,10 @@ int verify_cis_cache(struct pcmcia_socket *s) { struct cis_cache_entry *cis; char *buf; + int ret; + + if (s->state & SOCKET_CARDBUS) + return -EINVAL; buf = kmalloc(256, GFP_KERNEL); if (buf == NULL) { @@ -361,14 +393,9 @@ int verify_cis_cache(struct pcmcia_socket *s) if (len > 256) len = 256; -#ifdef CONFIG_CARDBUS - if (s->state & SOCKET_CARDBUS) - read_cb_mem(s, cis->attr, cis->addr, len, buf); - else -#endif - pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf); - if (memcmp(buf, cis->cache, len) != 0) { + ret = pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf); + if (ret || memcmp(buf, cis->cache, len) != 0) { kfree(buf); return -1; } @@ -391,17 +418,20 @@ int pcmcia_replace_cis(struct pcmcia_socket *s, dev_printk(KERN_WARNING, &s->dev, "replacement CIS too big\n"); return -EINVAL; } + mutex_lock(&s->ops_mutex); kfree(s->fake_cis); s->fake_cis = kmalloc(len, GFP_KERNEL); if (s->fake_cis == NULL) { dev_printk(KERN_WARNING, &s->dev, "no memory to replace CIS\n"); + mutex_unlock(&s->ops_mutex); return -ENOMEM; } s->fake_cis_len = len; memcpy(s->fake_cis, data, len); + dev_info(&s->dev, "Using replacement CIS\n"); + mutex_unlock(&s->ops_mutex); return 0; } -EXPORT_SYMBOL(pcmcia_replace_cis); /*====================================================================== @@ -425,25 +455,16 @@ int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple { if (!s) return -EINVAL; - if (!(s->state & SOCKET_PRESENT)) + + if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS)) return -ENODEV; tuple->TupleLink = tuple->Flags = 0; -#ifdef CONFIG_CARDBUS - if (s->state & SOCKET_CARDBUS) { - struct pci_dev *dev = s->cb_dev; - u_int ptr; - pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr); - tuple->CISOffset = ptr & ~7; - SPACE(tuple->Flags) = (ptr & 7); - } else -#endif - { - /* Assume presence of a LONGLINK_C to address 0 */ - tuple->CISOffset = tuple->LinkOffset = 0; - SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1; - } - if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) && - !(tuple->Attributes & TUPLE_RETURN_COMMON)) { + + /* Assume presence of a LONGLINK_C to address 0 */ + tuple->CISOffset = tuple->LinkOffset = 0; + SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1; + + if ((s->functions > 1) && !(tuple->Attributes & TUPLE_RETURN_COMMON)) { cisdata_t req = tuple->DesiredTuple; tuple->DesiredTuple = CISTPL_LONGLINK_MFC; if (pccard_get_next_tuple(s, function, tuple) == 0) { @@ -456,17 +477,19 @@ int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple } return pccard_get_next_tuple(s, function, tuple); } -EXPORT_SYMBOL(pccard_get_first_tuple); static int follow_link(struct pcmcia_socket *s, tuple_t *tuple) { u_char link[5]; u_int ofs; + int ret; if (MFC_FN(tuple->Flags)) { /* Get indirect link from the MFC tuple */ - read_cis_cache(s, LINK_SPACE(tuple->Flags), + ret = read_cis_cache(s, LINK_SPACE(tuple->Flags), tuple->LinkOffset, 5, link); + if (ret) + return -1; ofs = get_unaligned_le32(link + 1); SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR); /* Move to the next indirect link */ @@ -479,10 +502,12 @@ static int follow_link(struct pcmcia_socket *s, tuple_t *tuple) } else { return -1; } - if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) { + if (SPACE(tuple->Flags)) { /* This is ugly, but a common CIS error is to code the long link offset incorrectly, so we check the right spot... */ - read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); + ret = read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); + if (ret) + return -1; if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && (strncmp(link+2, "CIS", 3) == 0)) return ofs; @@ -490,7 +515,9 @@ static int follow_link(struct pcmcia_socket *s, tuple_t *tuple) /* Then, we try the wrong spot... */ ofs = ofs >> 1; } - read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); + ret = read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); + if (ret) + return -1; if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && (strncmp(link+2, "CIS", 3) == 0)) return ofs; @@ -502,10 +529,11 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ { u_char link[2], tmp; int ofs, i, attr; + int ret; if (!s) return -EINVAL; - if (!(s->state & SOCKET_PRESENT)) + if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS)) return -ENODEV; link[1] = tuple->TupleLink; @@ -516,7 +544,9 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ if (link[1] == 0xff) { link[0] = CISTPL_END; } else { - read_cis_cache(s, attr, ofs, 2, link); + ret = read_cis_cache(s, attr, ofs, 2, link); + if (ret) + return -1; if (link[0] == CISTPL_NULL) { ofs++; continue; } @@ -528,7 +558,9 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ if (ofs < 0) return -ENOSPC; attr = SPACE(tuple->Flags); - read_cis_cache(s, attr, ofs, 2, link); + ret = read_cis_cache(s, attr, ofs, 2, link); + if (ret) + return -1; } /* Is this a link tuple? Make a note of it */ @@ -542,12 +574,16 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ case CISTPL_LONGLINK_A: HAS_LINK(tuple->Flags) = 1; LINK_SPACE(tuple->Flags) = attr | IS_ATTR; - read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); + ret = read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); + if (ret) + return -1; break; case CISTPL_LONGLINK_C: HAS_LINK(tuple->Flags) = 1; LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR; - read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); + ret = read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); + if (ret) + return -1; break; case CISTPL_INDIRECT: HAS_LINK(tuple->Flags) = 1; @@ -559,7 +595,9 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ LINK_SPACE(tuple->Flags) = attr; if (function == BIND_FN_ALL) { /* Follow all the MFC links */ - read_cis_cache(s, attr, ofs+2, 1, &tmp); + ret = read_cis_cache(s, attr, ofs+2, 1, &tmp); + if (ret) + return -1; MFC_FN(tuple->Flags) = tmp; } else { /* Follow exactly one of the links */ @@ -592,7 +630,6 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_ tuple->CISOffset = ofs + 2; return 0; } -EXPORT_SYMBOL(pccard_get_next_tuple); /*====================================================================*/ @@ -601,6 +638,7 @@ EXPORT_SYMBOL(pccard_get_next_tuple); int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple) { u_int len; + int ret; if (!s) return -EINVAL; @@ -611,12 +649,13 @@ int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple) tuple->TupleDataLen = tuple->TupleLink; if (len == 0) return 0; - read_cis_cache(s, SPACE(tuple->Flags), + ret = read_cis_cache(s, SPACE(tuple->Flags), tuple->CISOffset + tuple->TupleOffset, _MIN(len, tuple->TupleDataMax), tuple->TupleData); + if (ret) + return -1; return 0; } -EXPORT_SYMBOL(pccard_get_tuple_data); /*====================================================================== @@ -1190,119 +1229,6 @@ static int parse_cftable_entry(tuple_t *tuple, /*====================================================================*/ -#ifdef CONFIG_CARDBUS - -static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar) -{ - u_char *p; - if (tuple->TupleDataLen < 6) - return -EINVAL; - p = (u_char *)tuple->TupleData; - bar->attr = *p; - p += 2; - bar->size = get_unaligned_le32(p); - return 0; -} - -static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config) -{ - u_char *p; - - p = (u_char *)tuple->TupleData; - if ((*p != 3) || (tuple->TupleDataLen < 6)) - return -EINVAL; - config->last_idx = *(++p); - p++; - config->base = get_unaligned_le32(p); - config->subtuples = tuple->TupleDataLen - 6; - return 0; -} - -static int parse_cftable_entry_cb(tuple_t *tuple, - cistpl_cftable_entry_cb_t *entry) -{ - u_char *p, *q, features; - - p = tuple->TupleData; - q = p + tuple->TupleDataLen; - entry->index = *p & 0x3f; - entry->flags = 0; - if (*p & 0x40) - entry->flags |= CISTPL_CFTABLE_DEFAULT; - - /* Process optional features */ - if (++p == q) - return -EINVAL; - features = *p; p++; - - /* Power options */ - if ((features & 3) > 0) { - p = parse_power(p, q, &entry->vcc); - if (p == NULL) - return -EINVAL; - } else - entry->vcc.present = 0; - if ((features & 3) > 1) { - p = parse_power(p, q, &entry->vpp1); - if (p == NULL) - return -EINVAL; - } else - entry->vpp1.present = 0; - if ((features & 3) > 2) { - p = parse_power(p, q, &entry->vpp2); - if (p == NULL) - return -EINVAL; - } else - entry->vpp2.present = 0; - - /* I/O window options */ - if (features & 0x08) { - if (p == q) - return -EINVAL; - entry->io = *p; p++; - } else - entry->io = 0; - - /* Interrupt options */ - if (features & 0x10) { - p = parse_irq(p, q, &entry->irq); - if (p == NULL) - return -EINVAL; - } else - entry->irq.IRQInfo1 = 0; - - if (features & 0x20) { - if (p == q) - return -EINVAL; - entry->mem = *p; p++; - } else - entry->mem = 0; - - /* Misc features */ - if (features & 0x80) { - if (p == q) - return -EINVAL; - entry->flags |= (*p << 8); - if (*p & 0x80) { - if (++p == q) - return -EINVAL; - entry->flags |= (*p << 16); - } - while (*p & 0x80) - if (++p == q) - return -EINVAL; - p++; - } - - entry->subtuples = q-p; - - return 0; -} - -#endif - -/*====================================================================*/ - static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo) { u_char *p, *q; @@ -1404,17 +1330,6 @@ int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse) case CISTPL_DEVICE_A: ret = parse_device(tuple, &parse->device); break; -#ifdef CONFIG_CARDBUS - case CISTPL_BAR: - ret = parse_bar(tuple, &parse->bar); - break; - case CISTPL_CONFIG_CB: - ret = parse_config_cb(tuple, &parse->config); - break; - case CISTPL_CFTABLE_ENTRY_CB: - ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb); - break; -#endif case CISTPL_CHECKSUM: ret = parse_checksum(tuple, &parse->checksum); break; @@ -1513,7 +1428,6 @@ done: kfree(buf); return ret; } -EXPORT_SYMBOL(pccard_read_tuple); /** @@ -1573,84 +1487,238 @@ next_entry: kfree(buf); return ret; } -EXPORT_SYMBOL(pccard_loop_tuple); -/*====================================================================== - - This tries to determine if a card has a sensible CIS. It returns - the number of tuples in the CIS, or 0 if the CIS looks bad. The - checks include making sure several critical tuples are present and - valid; seeing if the total number of tuples is reasonable; and - looking for tuples that use reserved codes. - -======================================================================*/ - +/** + * pccard_validate_cis() - check whether card has a sensible CIS + * @s: the struct pcmcia_socket we are to check + * @info: returns the number of tuples in the (valid) CIS, or 0 + * + * This tries to determine if a card has a sensible CIS. In @info, it + * returns the number of tuples in the CIS, or 0 if the CIS looks bad. The + * checks include making sure several critical tuples are present and + * valid; seeing if the total number of tuples is reasonable; and + * looking for tuples that use reserved codes. + * + * The function returns 0 on success. + */ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) { - tuple_t *tuple; - cisparse_t *p; - unsigned int count = 0; - int ret, reserved, dev_ok = 0, ident_ok = 0; + tuple_t *tuple; + cisparse_t *p; + unsigned int count = 0; + int ret, reserved, dev_ok = 0, ident_ok = 0; - if (!s) - return -EINVAL; + if (!s) + return -EINVAL; - tuple = kmalloc(sizeof(*tuple), GFP_KERNEL); - if (tuple == NULL) { - dev_printk(KERN_WARNING, &s->dev, "no memory to validate CIS\n"); - return -ENOMEM; - } - p = kmalloc(sizeof(*p), GFP_KERNEL); - if (p == NULL) { - kfree(tuple); - dev_printk(KERN_WARNING, &s->dev, "no memory to validate CIS\n"); - return -ENOMEM; - } + /* We do not want to validate the CIS cache... */ + mutex_lock(&s->ops_mutex); + destroy_cis_cache(s); + mutex_unlock(&s->ops_mutex); - count = reserved = 0; - tuple->DesiredTuple = RETURN_FIRST_TUPLE; - tuple->Attributes = TUPLE_RETURN_COMMON; - ret = pccard_get_first_tuple(s, BIND_FN_ALL, tuple); - if (ret != 0) - goto done; - - /* First tuple should be DEVICE; we should really have either that - or a CFTABLE_ENTRY of some sort */ - if ((tuple->TupleCode == CISTPL_DEVICE) || - (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY, p) == 0) || - (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY_CB, p) == 0)) - dev_ok++; - - /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2 - tuple, for card identification. Certain old D-Link and Linksys - cards have only a broken VERS_2 tuple; hence the bogus test. */ - if ((pccard_read_tuple(s, BIND_FN_ALL, CISTPL_MANFID, p) == 0) || - (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_1, p) == 0) || - (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_2, p) != -ENOSPC)) - ident_ok++; - - if (!dev_ok && !ident_ok) - goto done; - - for (count = 1; count < MAX_TUPLES; count++) { - ret = pccard_get_next_tuple(s, BIND_FN_ALL, tuple); + tuple = kmalloc(sizeof(*tuple), GFP_KERNEL); + if (tuple == NULL) { + dev_warn(&s->dev, "no memory to validate CIS\n"); + return -ENOMEM; + } + p = kmalloc(sizeof(*p), GFP_KERNEL); + if (p == NULL) { + kfree(tuple); + dev_warn(&s->dev, "no memory to validate CIS\n"); + return -ENOMEM; + } + + count = reserved = 0; + tuple->DesiredTuple = RETURN_FIRST_TUPLE; + tuple->Attributes = TUPLE_RETURN_COMMON; + ret = pccard_get_first_tuple(s, BIND_FN_ALL, tuple); if (ret != 0) - break; - if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) || - ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) || - ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff))) - reserved++; - } - if ((count == MAX_TUPLES) || (reserved > 5) || - ((!dev_ok || !ident_ok) && (count > 10))) - count = 0; + goto done; + + /* First tuple should be DEVICE; we should really have either that + or a CFTABLE_ENTRY of some sort */ + if ((tuple->TupleCode == CISTPL_DEVICE) || + (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY, p)) || + (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY_CB, p))) + dev_ok++; + + /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2 + tuple, for card identification. Certain old D-Link and Linksys + cards have only a broken VERS_2 tuple; hence the bogus test. */ + if ((pccard_read_tuple(s, BIND_FN_ALL, CISTPL_MANFID, p) == 0) || + (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_1, p) == 0) || + (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_2, p) != -ENOSPC)) + ident_ok++; + + if (!dev_ok && !ident_ok) + goto done; + + for (count = 1; count < MAX_TUPLES; count++) { + ret = pccard_get_next_tuple(s, BIND_FN_ALL, tuple); + if (ret != 0) + break; + if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) || + ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) || + ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff))) + reserved++; + } + if ((count == MAX_TUPLES) || (reserved > 5) || + ((!dev_ok || !ident_ok) && (count > 10))) + count = 0; + + ret = 0; done: - if (info) - *info = count; - kfree(tuple); - kfree(p); - return 0; + /* invalidate CIS cache on failure */ + if (!dev_ok || !ident_ok || !count) { + mutex_lock(&s->ops_mutex); + destroy_cis_cache(s); + mutex_unlock(&s->ops_mutex); + ret = -EIO; + } + + if (info) + *info = count; + kfree(tuple); + kfree(p); + return ret; } -EXPORT_SYMBOL(pccard_validate_cis); + + +#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) + +static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, + loff_t off, size_t count) +{ + tuple_t tuple; + int status, i; + loff_t pointer = 0; + ssize_t ret = 0; + u_char *tuplebuffer; + u_char *tempbuffer; + + tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); + if (!tuplebuffer) + return -ENOMEM; + + tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); + if (!tempbuffer) { + ret = -ENOMEM; + goto free_tuple; + } + + memset(&tuple, 0, sizeof(tuple_t)); + + tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON; + tuple.DesiredTuple = RETURN_FIRST_TUPLE; + tuple.TupleOffset = 0; + + status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple); + while (!status) { + tuple.TupleData = tuplebuffer; + tuple.TupleDataMax = 255; + memset(tuplebuffer, 0, sizeof(u_char) * 255); + + status = pccard_get_tuple_data(s, &tuple); + if (status) + break; + + if (off < (pointer + 2 + tuple.TupleDataLen)) { + tempbuffer[0] = tuple.TupleCode & 0xff; + tempbuffer[1] = tuple.TupleLink & 0xff; + for (i = 0; i < tuple.TupleDataLen; i++) + tempbuffer[i + 2] = tuplebuffer[i] & 0xff; + + for (i = 0; i < (2 + tuple.TupleDataLen); i++) { + if (((i + pointer) >= off) && + (i + pointer) < (off + count)) { + buf[ret] = tempbuffer[i]; + ret++; + } + } + } + + pointer += 2 + tuple.TupleDataLen; + + if (pointer >= (off + count)) + break; + + if (tuple.TupleCode == CISTPL_END) + break; + status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple); + } + + kfree(tempbuffer); + free_tuple: + kfree(tuplebuffer); + + return ret; +} + + +static ssize_t pccard_show_cis(struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + unsigned int size = 0x200; + + if (off >= size) + count = 0; + else { + struct pcmcia_socket *s; + unsigned int chains; + + if (off + count > size) + count = size - off; + + s = to_socket(container_of(kobj, struct device, kobj)); + + if (!(s->state & SOCKET_PRESENT)) + return -ENODEV; + if (pccard_validate_cis(s, &chains)) + return -EIO; + if (!chains) + return -ENODATA; + + count = pccard_extract_cis(s, buf, off, count); + } + + return count; +} + + +static ssize_t pccard_store_cis(struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + struct pcmcia_socket *s; + int error; + + s = to_socket(container_of(kobj, struct device, kobj)); + + if (off) + return -EINVAL; + + if (count >= CISTPL_MAX_CIS_SIZE) + return -EINVAL; + + if (!(s->state & SOCKET_PRESENT)) + return -ENODEV; + + error = pcmcia_replace_cis(s, buf, count); + if (error) + return -EIO; + + pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); + + return count; +} + + +struct bin_attribute pccard_cis_attr = { + .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR }, + .size = 0x200, + .read = pccard_show_cis, + .write = pccard_store_cis, +}; diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 6d6f82b38a68..e679e708db63 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -140,19 +140,13 @@ struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt) struct device *dev = get_device(&skt->dev); if (!dev) return NULL; - skt = dev_get_drvdata(dev); - if (!try_module_get(skt->owner)) { - put_device(&skt->dev); - return NULL; - } - return skt; + return dev_get_drvdata(dev); } EXPORT_SYMBOL(pcmcia_get_socket); void pcmcia_put_socket(struct pcmcia_socket *skt) { - module_put(skt->owner); put_device(&skt->dev); } EXPORT_SYMBOL(pcmcia_put_socket); @@ -181,8 +175,6 @@ int pcmcia_register_socket(struct pcmcia_socket *socket) dev_dbg(&socket->dev, "pcmcia_register_socket(0x%p)\n", socket->ops); - spin_lock_init(&socket->lock); - /* try to obtain a socket number [yes, it gets ugly if we * register more than 2^sizeof(unsigned int) pcmcia * sockets... but the socket number is deprecated @@ -228,10 +220,13 @@ int pcmcia_register_socket(struct pcmcia_socket *socket) init_completion(&socket->socket_released); init_completion(&socket->thread_done); mutex_init(&socket->skt_mutex); + mutex_init(&socket->ops_mutex); spin_lock_init(&socket->thread_lock); if (socket->resource_ops->init) { + mutex_lock(&socket->ops_mutex); ret = socket->resource_ops->init(socket); + mutex_unlock(&socket->ops_mutex); if (ret) goto err; } @@ -283,15 +278,17 @@ void pcmcia_unregister_socket(struct pcmcia_socket *socket) if (socket->thread) kthread_stop(socket->thread); - release_cis_mem(socket); - /* remove from our own list */ down_write(&pcmcia_socket_list_rwsem); list_del(&socket->socket_list); up_write(&pcmcia_socket_list_rwsem); /* wait for sysfs to drop all references */ - release_resource_db(socket); + if (socket->resource_ops->exit) { + mutex_lock(&socket->ops_mutex); + socket->resource_ops->exit(socket); + mutex_unlock(&socket->ops_mutex); + } wait_for_completion(&socket->socket_released); } /* pcmcia_unregister_socket */ EXPORT_SYMBOL(pcmcia_unregister_socket); @@ -328,7 +325,7 @@ static int send_event(struct pcmcia_socket *s, event_t event, int priority) { int ret; - if (s->state & SOCKET_CARDBUS) + if ((s->state & SOCKET_CARDBUS) && (event != CS_EVENT_CARD_REMOVAL)) return 0; dev_dbg(&s->dev, "send_event(event %d, pri %d, callback 0x%p)\n", @@ -346,13 +343,6 @@ static int send_event(struct pcmcia_socket *s, event_t event, int priority) return ret; } -static void socket_remove_drivers(struct pcmcia_socket *skt) -{ - dev_dbg(&skt->dev, "remove_drivers\n"); - - send_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); -} - static int socket_reset(struct pcmcia_socket *skt) { int status, i; @@ -395,7 +385,9 @@ static void socket_shutdown(struct pcmcia_socket *s) dev_dbg(&s->dev, "shutdown\n"); - socket_remove_drivers(s); + send_event(s, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); + + mutex_lock(&s->ops_mutex); s->state &= SOCKET_INUSE | SOCKET_PRESENT; msleep(shutdown_delay * 10); s->state &= SOCKET_INUSE; @@ -406,11 +398,21 @@ static void socket_shutdown(struct pcmcia_socket *s) s->ops->set_socket(s, &s->socket); s->irq.AssignedIRQ = s->irq.Config = 0; s->lock_count = 0; - destroy_cis_cache(s); + kfree(s->fake_cis); + s->fake_cis = NULL; + s->functions = 0; + + /* From here on we can be sure that only we (that is, the + * pccardd thread) accesses this socket, and all (16-bit) + * PCMCIA interactions are gone. Therefore, release + * ops_mutex so that we don't get a sysfs-related lockdep + * warning. + */ + mutex_unlock(&s->ops_mutex); + #ifdef CONFIG_CARDBUS cb_free(s); #endif - s->functions = 0; /* give socket some time to power down */ msleep(100); @@ -421,7 +423,7 @@ static void socket_shutdown(struct pcmcia_socket *s) "*** DANGER *** unable to remove socket power\n"); } - cs_socket_put(s); + s->state &= ~SOCKET_INUSE; } static int socket_setup(struct pcmcia_socket *skt, int initial_delay) @@ -460,7 +462,8 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay) return -EINVAL; } skt->state |= SOCKET_CARDBUS; - } + } else + skt->state &= ~SOCKET_CARDBUS; /* * Decode the card voltage requirements, and apply power to the card. @@ -509,8 +512,12 @@ static int socket_insert(struct pcmcia_socket *skt) dev_dbg(&skt->dev, "insert\n"); - if (!cs_socket_get(skt)) - return -ENODEV; + mutex_lock(&skt->ops_mutex); + if (skt->state & SOCKET_INUSE) { + mutex_unlock(&skt->ops_mutex); + return -EINVAL; + } + skt->state |= SOCKET_INUSE; ret = socket_setup(skt, setup_delay); if (ret == 0) { @@ -528,9 +535,11 @@ static int socket_insert(struct pcmcia_socket *skt) } #endif dev_dbg(&skt->dev, "insert done\n"); + mutex_unlock(&skt->ops_mutex); send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); } else { + mutex_unlock(&skt->ops_mutex); socket_shutdown(skt); } @@ -542,58 +551,66 @@ static int socket_suspend(struct pcmcia_socket *skt) if (skt->state & SOCKET_SUSPEND) return -EBUSY; + mutex_lock(&skt->ops_mutex); + skt->suspended_state = skt->state; + send_event(skt, CS_EVENT_PM_SUSPEND, CS_EVENT_PRI_LOW); skt->socket = dead_socket; skt->ops->set_socket(skt, &skt->socket); if (skt->ops->suspend) skt->ops->suspend(skt); skt->state |= SOCKET_SUSPEND; - + mutex_unlock(&skt->ops_mutex); return 0; } static int socket_early_resume(struct pcmcia_socket *skt) { + mutex_lock(&skt->ops_mutex); skt->socket = dead_socket; skt->ops->init(skt); skt->ops->set_socket(skt, &skt->socket); if (skt->state & SOCKET_PRESENT) skt->resume_status = socket_setup(skt, resume_delay); + mutex_unlock(&skt->ops_mutex); return 0; } static int socket_late_resume(struct pcmcia_socket *skt) { - if (!(skt->state & SOCKET_PRESENT)) { - skt->state &= ~SOCKET_SUSPEND; + mutex_lock(&skt->ops_mutex); + skt->state &= ~SOCKET_SUSPEND; + mutex_unlock(&skt->ops_mutex); + + if (!(skt->state & SOCKET_PRESENT)) return socket_insert(skt); + + if (skt->resume_status) { + socket_shutdown(skt); + return 0; } - if (skt->resume_status == 0) { - /* - * FIXME: need a better check here for cardbus cards. - */ - if (verify_cis_cache(skt) != 0) { - dev_dbg(&skt->dev, "cis mismatch - different card\n"); - socket_remove_drivers(skt); - destroy_cis_cache(skt); - /* - * Workaround: give DS time to schedule removal. - * Remove me once the 100ms delay is eliminated - * in ds.c - */ - msleep(200); - send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); - } else { - dev_dbg(&skt->dev, "cis matches cache\n"); - send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW); - } - } else { + if (skt->suspended_state != skt->state) { + dev_dbg(&skt->dev, + "suspend state 0x%x != resume state 0x%x\n", + skt->suspended_state, skt->state); + socket_shutdown(skt); + return socket_insert(skt); } - skt->state &= ~SOCKET_SUSPEND; +#ifdef CONFIG_CARDBUS + if (skt->state & SOCKET_CARDBUS) { + /* We can't be sure the CardBus card is the same + * as the one previously inserted. Therefore, remove + * and re-add... */ + cb_free(skt); + cb_alloc(skt); + return 0; + } +#endif + send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW); return 0; } @@ -672,20 +689,26 @@ static int pccardd(void *__skt) complete(&skt->thread_done); + /* wait for userspace to catch up */ + msleep(250); + set_freezable(); for (;;) { unsigned long flags; unsigned int events; + unsigned int sysfs_events; set_current_state(TASK_INTERRUPTIBLE); spin_lock_irqsave(&skt->thread_lock, flags); events = skt->thread_events; skt->thread_events = 0; + sysfs_events = skt->sysfs_events; + skt->sysfs_events = 0; spin_unlock_irqrestore(&skt->thread_lock, flags); + mutex_lock(&skt->skt_mutex); if (events) { - mutex_lock(&skt->skt_mutex); if (events & SS_DETECT) socket_detect_change(skt); if (events & SS_BATDEAD) @@ -694,10 +717,39 @@ static int pccardd(void *__skt) send_event(skt, CS_EVENT_BATTERY_LOW, CS_EVENT_PRI_LOW); if (events & SS_READY) send_event(skt, CS_EVENT_READY_CHANGE, CS_EVENT_PRI_LOW); - mutex_unlock(&skt->skt_mutex); - continue; } + if (sysfs_events) { + if (sysfs_events & PCMCIA_UEVENT_EJECT) + socket_remove(skt); + if (sysfs_events & PCMCIA_UEVENT_INSERT) + socket_insert(skt); + if ((sysfs_events & PCMCIA_UEVENT_RESUME) && + !(skt->state & SOCKET_CARDBUS)) { + ret = socket_resume(skt); + if (!ret && skt->callback) + skt->callback->resume(skt); + } + if ((sysfs_events & PCMCIA_UEVENT_SUSPEND) && + !(skt->state & SOCKET_CARDBUS)) { + if (skt->callback) + ret = skt->callback->suspend(skt); + else + ret = 0; + if (!ret) + socket_suspend(skt); + } + if ((sysfs_events & PCMCIA_UEVENT_REQUERY) && + !(skt->state & SOCKET_CARDBUS)) { + if (!ret && skt->callback) + skt->callback->requery(skt); + } + } + mutex_unlock(&skt->skt_mutex); + + if (events || sysfs_events) + continue; + if (kthread_should_stop()) break; @@ -707,6 +759,13 @@ static int pccardd(void *__skt) /* make sure we are running before we exit */ set_current_state(TASK_RUNNING); + /* shut down socket, if a device is still present */ + if (skt->state & SOCKET_PRESENT) { + mutex_lock(&skt->skt_mutex); + socket_remove(skt); + mutex_unlock(&skt->skt_mutex); + } + /* remove from the device core */ pccard_sysfs_remove_socket(&skt->dev); device_unregister(&skt->dev); @@ -732,6 +791,31 @@ void pcmcia_parse_events(struct pcmcia_socket *s, u_int events) } /* pcmcia_parse_events */ EXPORT_SYMBOL(pcmcia_parse_events); +/** + * pcmcia_parse_uevents() - tell pccardd to issue manual commands + * @s: the PCMCIA socket we wan't to command + * @events: events to pass to pccardd + * + * userspace-issued insert, eject, suspend and resume commands must be + * handled by pccardd to avoid any sysfs-related deadlocks. Valid events + * are PCMCIA_UEVENT_EJECT (for eject), PCMCIA_UEVENT__INSERT (for insert), + * PCMCIA_UEVENT_RESUME (for resume), PCMCIA_UEVENT_SUSPEND (for suspend) + * and PCMCIA_UEVENT_REQUERY (for re-querying the PCMCIA card). + */ +void pcmcia_parse_uevents(struct pcmcia_socket *s, u_int events) +{ + unsigned long flags; + dev_dbg(&s->dev, "parse_uevents: events %08x\n", events); + if (s->thread) { + spin_lock_irqsave(&s->thread_lock, flags); + s->sysfs_events |= events; + spin_unlock_irqrestore(&s->thread_lock, flags); + + wake_up_process(s->thread); + } +} +EXPORT_SYMBOL(pcmcia_parse_uevents); + /* register pcmcia_callback */ int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c) @@ -796,7 +880,10 @@ int pcmcia_reset_card(struct pcmcia_socket *skt) send_event(skt, CS_EVENT_RESET_PHYSICAL, CS_EVENT_PRI_LOW); if (skt->callback) skt->callback->suspend(skt); - if (socket_reset(skt) == 0) { + mutex_lock(&skt->ops_mutex); + ret = socket_reset(skt); + mutex_unlock(&skt->ops_mutex); + if (ret == 0) { send_event(skt, CS_EVENT_CARD_RESET, CS_EVENT_PRI_LOW); if (skt->callback) skt->callback->resume(skt); @@ -812,121 +899,6 @@ int pcmcia_reset_card(struct pcmcia_socket *skt) EXPORT_SYMBOL(pcmcia_reset_card); -/* These shut down or wake up a socket. They are sort of user - * initiated versions of the APM suspend and resume actions. - */ -int pcmcia_suspend_card(struct pcmcia_socket *skt) -{ - int ret; - - dev_dbg(&skt->dev, "suspending socket\n"); - - mutex_lock(&skt->skt_mutex); - do { - if (!(skt->state & SOCKET_PRESENT)) { - ret = -ENODEV; - break; - } - if (skt->state & SOCKET_CARDBUS) { - ret = -EPERM; - break; - } - if (skt->callback) { - ret = skt->callback->suspend(skt); - if (ret) - break; - } - ret = socket_suspend(skt); - } while (0); - mutex_unlock(&skt->skt_mutex); - - return ret; -} /* suspend_card */ -EXPORT_SYMBOL(pcmcia_suspend_card); - - -int pcmcia_resume_card(struct pcmcia_socket *skt) -{ - int ret; - - dev_dbg(&skt->dev, "waking up socket\n"); - - mutex_lock(&skt->skt_mutex); - do { - if (!(skt->state & SOCKET_PRESENT)) { - ret = -ENODEV; - break; - } - if (skt->state & SOCKET_CARDBUS) { - ret = -EPERM; - break; - } - ret = socket_resume(skt); - if (!ret && skt->callback) - skt->callback->resume(skt); - } while (0); - mutex_unlock(&skt->skt_mutex); - - return ret; -} /* resume_card */ -EXPORT_SYMBOL(pcmcia_resume_card); - - -/* These handle user requests to eject or insert a card. */ -int pcmcia_eject_card(struct pcmcia_socket *skt) -{ - int ret; - - dev_dbg(&skt->dev, "user eject request\n"); - - mutex_lock(&skt->skt_mutex); - do { - if (!(skt->state & SOCKET_PRESENT)) { - ret = -ENODEV; - break; - } - - ret = send_event(skt, CS_EVENT_EJECTION_REQUEST, CS_EVENT_PRI_LOW); - if (ret != 0) { - ret = -EINVAL; - break; - } - - socket_remove(skt); - ret = 0; - } while (0); - mutex_unlock(&skt->skt_mutex); - - return ret; -} /* eject_card */ -EXPORT_SYMBOL(pcmcia_eject_card); - - -int pcmcia_insert_card(struct pcmcia_socket *skt) -{ - int ret; - - dev_dbg(&skt->dev, "user insert request\n"); - - mutex_lock(&skt->skt_mutex); - do { - if (skt->state & SOCKET_PRESENT) { - ret = -EBUSY; - break; - } - if (socket_insert(skt) == -ENODEV) { - ret = -ENODEV; - break; - } - ret = 0; - } while (0); - mutex_unlock(&skt->skt_mutex); - - return ret; -} /* insert_card */ -EXPORT_SYMBOL(pcmcia_insert_card); - - static int pcmcia_socket_uevent(struct device *dev, struct kobj_uevent_env *env) { diff --git a/drivers/pcmcia/cs_internal.h b/drivers/pcmcia/cs_internal.h index 3bc02d53a3a3..f95864c2191e 100644 --- a/drivers/pcmcia/cs_internal.h +++ b/drivers/pcmcia/cs_internal.h @@ -87,37 +87,11 @@ struct pccard_resource_ops { #define SOCKET_CARDBUS 0x8000 #define SOCKET_CARDBUS_CONFIG 0x10000 -static inline int cs_socket_get(struct pcmcia_socket *skt) -{ - int ret; - - WARN_ON(skt->state & SOCKET_INUSE); - - ret = try_module_get(skt->owner); - if (ret) - skt->state |= SOCKET_INUSE; - return ret; -} - -static inline void cs_socket_put(struct pcmcia_socket *skt) -{ - if (skt->state & SOCKET_INUSE) { - skt->state &= ~SOCKET_INUSE; - module_put(skt->owner); - } -} - /* * Stuff internal to module "pcmcia_core": */ -/* cistpl.c */ -int verify_cis_cache(struct pcmcia_socket *s); - -/* rsrc_mgr.c */ -void release_resource_db(struct pcmcia_socket *s); - /* socket_sysfs.c */ extern int pccard_sysfs_add_socket(struct device *dev); extern void pccard_sysfs_remove_socket(struct device *dev); @@ -125,8 +99,6 @@ extern void pccard_sysfs_remove_socket(struct device *dev); /* cardbus.c */ int cb_alloc(struct pcmcia_socket *s); void cb_free(struct pcmcia_socket *s); -int read_cb_mem(struct pcmcia_socket *s, int space, u_int addr, u_int len, - void *ptr); @@ -138,7 +110,8 @@ struct pcmcia_callback{ struct module *owner; int (*event) (struct pcmcia_socket *s, event_t event, int priority); - void (*requery) (struct pcmcia_socket *s, int new_cis); + void (*requery) (struct pcmcia_socket *s); + int (*validate) (struct pcmcia_socket *s, unsigned int *i); int (*suspend) (struct pcmcia_socket *s); int (*resume) (struct pcmcia_socket *s); }; @@ -151,16 +124,35 @@ extern struct class pcmcia_socket_class; int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c); struct pcmcia_socket *pcmcia_get_socket_by_nr(unsigned int nr); -int pcmcia_suspend_card(struct pcmcia_socket *skt); -int pcmcia_resume_card(struct pcmcia_socket *skt); - -int pcmcia_eject_card(struct pcmcia_socket *skt); -int pcmcia_insert_card(struct pcmcia_socket *skt); +void pcmcia_parse_uevents(struct pcmcia_socket *socket, unsigned int events); +#define PCMCIA_UEVENT_EJECT 0x0001 +#define PCMCIA_UEVENT_INSERT 0x0002 +#define PCMCIA_UEVENT_SUSPEND 0x0004 +#define PCMCIA_UEVENT_RESUME 0x0008 +#define PCMCIA_UEVENT_REQUERY 0x0010 struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt); void pcmcia_put_socket(struct pcmcia_socket *skt); +/* + * Stuff internal to module "pcmcia". + */ +/* ds.c */ +extern struct bus_type pcmcia_bus_type; + +/* pcmcia_resource.c */ +extern int pcmcia_release_configuration(struct pcmcia_device *p_dev); +extern int pcmcia_validate_mem(struct pcmcia_socket *s); +extern struct resource *pcmcia_find_mem_region(u_long base, + u_long num, + u_long align, + int low, + struct pcmcia_socket *s); + + /* cistpl.c */ +extern struct bin_attribute pccard_cis_attr; + int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, u_int len, void *ptr); void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, @@ -172,8 +164,8 @@ int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, int pcmcia_replace_cis(struct pcmcia_socket *s, const u8 *data, const size_t len); int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *count); +int verify_cis_cache(struct pcmcia_socket *s); -/* loop over CIS entries */ int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, cisparse_t *parse, void *priv_data, int (*loop_tuple) (tuple_t *tuple, @@ -189,35 +181,8 @@ int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple); -/* rsrc_mgr.c */ -int pcmcia_validate_mem(struct pcmcia_socket *s); -struct resource *pcmcia_find_io_region(unsigned long base, - int num, - unsigned long align, - struct pcmcia_socket *s); -int pcmcia_adjust_io_region(struct resource *res, - unsigned long r_start, - unsigned long r_end, - struct pcmcia_socket *s); -struct resource *pcmcia_find_mem_region(u_long base, - u_long num, - u_long align, - int low, - struct pcmcia_socket *s); - -/* - * Stuff internal to module "pcmcia". - */ -/* ds.c */ -extern struct bus_type pcmcia_bus_type; - -/* pcmcia_resource.c */ -extern int pcmcia_release_configuration(struct pcmcia_device *p_dev); - #ifdef CONFIG_PCMCIA_IOCTL /* ds.c */ -extern spinlock_t pcmcia_dev_list_lock; - extern struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev); extern void pcmcia_put_dev(struct pcmcia_device *p_dev); diff --git a/drivers/pcmcia/db1xxx_ss.c b/drivers/pcmcia/db1xxx_ss.c new file mode 100644 index 000000000000..3889cf07d6ce --- /dev/null +++ b/drivers/pcmcia/db1xxx_ss.c @@ -0,0 +1,623 @@ +/* + * PCMCIA socket code for the Alchemy Db1xxx/Pb1xxx boards. + * + * Copyright (c) 2009 Manuel Lauss <manuel.lauss@gmail.com> + * + */ + +/* This is a fairly generic PCMCIA socket driver suitable for the + * following Alchemy Development boards: + * Db1000, Db/Pb1500, Db/Pb1100, Db/Pb1550, Db/Pb1200. + * + * The Db1000 is used as a reference: Per-socket card-, carddetect- and + * statuschange IRQs connected to SoC GPIOs, control and status register + * bits arranged in per-socket groups in an external PLD. All boards + * listed here use this layout, including bit positions and meanings. + * Of course there are exceptions in later boards: + * + * - Pb1100/Pb1500: single socket only; voltage key bits VS are + * at STATUS[5:4] (instead of STATUS[1:0]). + * - Au1200-based: additional card-eject irqs, irqs not gpios! + */ + +#include <linux/delay.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/pm.h> +#include <linux/platform_device.h> +#include <linux/resource.h> +#include <linux/spinlock.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/ss.h> + +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-db1x00/bcsr.h> + +#define MEM_MAP_SIZE 0x400000 +#define IO_MAP_SIZE 0x1000 + +struct db1x_pcmcia_sock { + struct pcmcia_socket socket; + int nr; /* socket number */ + void *virt_io; + + /* the "pseudo" addresses of the PCMCIA space. */ + phys_addr_t phys_io; + phys_addr_t phys_attr; + phys_addr_t phys_mem; + + /* previous flags for set_socket() */ + unsigned int old_flags; + + /* interrupt sources: linux irq numbers! */ + int insert_irq; /* default carddetect irq */ + int stschg_irq; /* card-status-change irq */ + int card_irq; /* card irq */ + int eject_irq; /* db1200/pb1200 have these */ + +#define BOARD_TYPE_DEFAULT 0 /* most boards */ +#define BOARD_TYPE_DB1200 1 /* IRQs aren't gpios */ +#define BOARD_TYPE_PB1100 2 /* VS bits slightly different */ + int board_type; +}; + +#define to_db1x_socket(x) container_of(x, struct db1x_pcmcia_sock, socket) + +/* DB/PB1200: check CPLD SIGSTATUS register bit 10/12 */ +static int db1200_card_inserted(struct db1x_pcmcia_sock *sock) +{ + unsigned short sigstat; + + sigstat = bcsr_read(BCSR_SIGSTAT); + return sigstat & 1 << (8 + 2 * sock->nr); +} + +/* carddetect gpio: low-active */ +static int db1000_card_inserted(struct db1x_pcmcia_sock *sock) +{ + return !gpio_get_value(irq_to_gpio(sock->insert_irq)); +} + +static int db1x_card_inserted(struct db1x_pcmcia_sock *sock) +{ + switch (sock->board_type) { + case BOARD_TYPE_DB1200: + return db1200_card_inserted(sock); + default: + return db1000_card_inserted(sock); + } +} + +/* STSCHG tends to bounce heavily when cards are inserted/ejected. + * To avoid this, the interrupt is normally disabled and only enabled + * after reset to a card has been de-asserted. + */ +static inline void set_stschg(struct db1x_pcmcia_sock *sock, int en) +{ + if (sock->stschg_irq != -1) { + if (en) + enable_irq(sock->stschg_irq); + else + disable_irq(sock->stschg_irq); + } +} + +static irqreturn_t db1000_pcmcia_cdirq(int irq, void *data) +{ + struct db1x_pcmcia_sock *sock = data; + + pcmcia_parse_events(&sock->socket, SS_DETECT); + + return IRQ_HANDLED; +} + +static irqreturn_t db1000_pcmcia_stschgirq(int irq, void *data) +{ + struct db1x_pcmcia_sock *sock = data; + + pcmcia_parse_events(&sock->socket, SS_STSCHG); + + return IRQ_HANDLED; +} + +static irqreturn_t db1200_pcmcia_cdirq(int irq, void *data) +{ + struct db1x_pcmcia_sock *sock = data; + + /* Db/Pb1200 have separate per-socket insertion and ejection + * interrupts which stay asserted as long as the card is + * inserted/missing. The one which caused us to be called + * needs to be disabled and the other one enabled. + */ + if (irq == sock->insert_irq) { + disable_irq_nosync(sock->insert_irq); + enable_irq(sock->eject_irq); + } else { + disable_irq_nosync(sock->eject_irq); + enable_irq(sock->insert_irq); + } + + pcmcia_parse_events(&sock->socket, SS_DETECT); + + return IRQ_HANDLED; +} + +static int db1x_pcmcia_setup_irqs(struct db1x_pcmcia_sock *sock) +{ + int ret; + unsigned long flags; + + if (sock->stschg_irq != -1) { + ret = request_irq(sock->stschg_irq, db1000_pcmcia_stschgirq, + 0, "pcmcia_stschg", sock); + if (ret) + return ret; + } + + /* Db/Pb1200 have separate per-socket insertion and ejection + * interrupts, which should show edge behaviour but don't. + * So interrupts are disabled until both insertion and + * ejection handler have been registered and the currently + * active one disabled. + */ + if (sock->board_type == BOARD_TYPE_DB1200) { + local_irq_save(flags); + + ret = request_irq(sock->insert_irq, db1200_pcmcia_cdirq, + IRQF_DISABLED, "pcmcia_insert", sock); + if (ret) + goto out1; + + ret = request_irq(sock->eject_irq, db1200_pcmcia_cdirq, + IRQF_DISABLED, "pcmcia_eject", sock); + if (ret) { + free_irq(sock->insert_irq, sock); + local_irq_restore(flags); + goto out1; + } + + /* disable the currently active one */ + if (db1200_card_inserted(sock)) + disable_irq_nosync(sock->insert_irq); + else + disable_irq_nosync(sock->eject_irq); + + local_irq_restore(flags); + } else { + /* all other (older) Db1x00 boards use a GPIO to show + * card detection status: use both-edge triggers. + */ + set_irq_type(sock->insert_irq, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(sock->insert_irq, db1000_pcmcia_cdirq, + 0, "pcmcia_carddetect", sock); + + if (ret) + goto out1; + } + + return 0; /* all done */ + +out1: + if (sock->stschg_irq != -1) + free_irq(sock->stschg_irq, sock); + + return ret; +} + +static void db1x_pcmcia_free_irqs(struct db1x_pcmcia_sock *sock) +{ + if (sock->stschg_irq != -1) + free_irq(sock->stschg_irq, sock); + + free_irq(sock->insert_irq, sock); + if (sock->eject_irq != -1) + free_irq(sock->eject_irq, sock); +} + +/* + * configure a PCMCIA socket on the Db1x00 series of boards (and + * compatibles). + * + * 2 external registers are involved: + * pcmcia_status (offset 0x04): bits [0:1/2:3]: read card voltage id + * pcmcia_control(offset 0x10): + * bits[0:1] set vcc for card + * bits[2:3] set vpp for card + * bit 4: enable data buffers + * bit 7: reset# for card + * add 8 for second socket. + */ +static int db1x_pcmcia_configure(struct pcmcia_socket *skt, + struct socket_state_t *state) +{ + struct db1x_pcmcia_sock *sock = to_db1x_socket(skt); + unsigned short cr_clr, cr_set; + unsigned int changed; + int v, p, ret; + + /* card voltage setup */ + cr_clr = (0xf << (sock->nr * 8)); /* clear voltage settings */ + cr_set = 0; + v = p = ret = 0; + + switch (state->Vcc) { + case 50: + ++v; + case 33: + ++v; + case 0: + break; + default: + printk(KERN_INFO "pcmcia%d unsupported Vcc %d\n", + sock->nr, state->Vcc); + } + + switch (state->Vpp) { + case 12: + ++p; + case 33: + case 50: + ++p; + case 0: + break; + default: + printk(KERN_INFO "pcmcia%d unsupported Vpp %d\n", + sock->nr, state->Vpp); + } + + /* sanity check: Vpp must be 0, 12, or Vcc */ + if (((state->Vcc == 33) && (state->Vpp == 50)) || + ((state->Vcc == 50) && (state->Vpp == 33))) { + printk(KERN_INFO "pcmcia%d bad Vcc/Vpp combo (%d %d)\n", + sock->nr, state->Vcc, state->Vpp); + v = p = 0; + ret = -EINVAL; + } + + /* create new voltage code */ + cr_set |= ((v << 2) | p) << (sock->nr * 8); + + changed = state->flags ^ sock->old_flags; + + if (changed & SS_RESET) { + if (state->flags & SS_RESET) { + set_stschg(sock, 0); + /* assert reset, disable io buffers */ + cr_clr |= (1 << (7 + (sock->nr * 8))); + cr_clr |= (1 << (4 + (sock->nr * 8))); + } else { + /* de-assert reset, enable io buffers */ + cr_set |= 1 << (7 + (sock->nr * 8)); + cr_set |= 1 << (4 + (sock->nr * 8)); + } + } + + /* update PCMCIA configuration */ + bcsr_mod(BCSR_PCMCIA, cr_clr, cr_set); + + sock->old_flags = state->flags; + + /* reset was taken away: give card time to initialize properly */ + if ((changed & SS_RESET) && !(state->flags & SS_RESET)) { + msleep(500); + set_stschg(sock, 1); + } + + return ret; +} + +/* VCC bits at [3:2]/[11:10] */ +#define GET_VCC(cr, socknr) \ + ((((cr) >> 2) >> ((socknr) * 8)) & 3) + +/* VS bits at [0:1]/[3:2] */ +#define GET_VS(sr, socknr) \ + (((sr) >> (2 * (socknr))) & 3) + +/* reset bits at [7]/[15] */ +#define GET_RESET(cr, socknr) \ + ((cr) & (1 << (7 + (8 * (socknr))))) + +static int db1x_pcmcia_get_status(struct pcmcia_socket *skt, + unsigned int *value) +{ + struct db1x_pcmcia_sock *sock = to_db1x_socket(skt); + unsigned short cr, sr; + unsigned int status; + + status = db1x_card_inserted(sock) ? SS_DETECT : 0; + + cr = bcsr_read(BCSR_PCMCIA); + sr = bcsr_read(BCSR_STATUS); + + /* PB1100/PB1500: voltage key bits are at [5:4] */ + if (sock->board_type == BOARD_TYPE_PB1100) + sr >>= 4; + + /* determine card type */ + switch (GET_VS(sr, sock->nr)) { + case 0: + case 2: + status |= SS_3VCARD; /* 3V card */ + case 3: + break; /* 5V card: set nothing */ + default: + status |= SS_XVCARD; /* treated as unsupported in core */ + } + + /* if Vcc is not zero, we have applied power to a card */ + status |= GET_VCC(cr, sock->nr) ? SS_POWERON : 0; + + /* reset de-asserted? then we're ready */ + status |= (GET_RESET(cr, sock->nr)) ? SS_READY : SS_RESET; + + *value = status; + + return 0; +} + +static int db1x_pcmcia_sock_init(struct pcmcia_socket *skt) +{ + return 0; +} + +static int db1x_pcmcia_sock_suspend(struct pcmcia_socket *skt) +{ + return 0; +} + +static int au1x00_pcmcia_set_io_map(struct pcmcia_socket *skt, + struct pccard_io_map *map) +{ + struct db1x_pcmcia_sock *sock = to_db1x_socket(skt); + + map->start = (u32)sock->virt_io; + map->stop = map->start + IO_MAP_SIZE; + + return 0; +} + +static int au1x00_pcmcia_set_mem_map(struct pcmcia_socket *skt, + struct pccard_mem_map *map) +{ + struct db1x_pcmcia_sock *sock = to_db1x_socket(skt); + + if (map->flags & MAP_ATTRIB) + map->static_start = sock->phys_attr + map->card_start; + else + map->static_start = sock->phys_mem + map->card_start; + + return 0; +} + +static struct pccard_operations db1x_pcmcia_operations = { + .init = db1x_pcmcia_sock_init, + .suspend = db1x_pcmcia_sock_suspend, + .get_status = db1x_pcmcia_get_status, + .set_socket = db1x_pcmcia_configure, + .set_io_map = au1x00_pcmcia_set_io_map, + .set_mem_map = au1x00_pcmcia_set_mem_map, +}; + +static int __devinit db1x_pcmcia_socket_probe(struct platform_device *pdev) +{ + struct db1x_pcmcia_sock *sock; + struct resource *r; + int ret, bid; + + sock = kzalloc(sizeof(struct db1x_pcmcia_sock), GFP_KERNEL); + if (!sock) + return -ENOMEM; + + sock->nr = pdev->id; + + bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)); + switch (bid) { + case BCSR_WHOAMI_PB1500: + case BCSR_WHOAMI_PB1500R2: + case BCSR_WHOAMI_PB1100: + sock->board_type = BOARD_TYPE_PB1100; + break; + case BCSR_WHOAMI_DB1000 ... BCSR_WHOAMI_PB1550_SDR: + sock->board_type = BOARD_TYPE_DEFAULT; + break; + case BCSR_WHOAMI_PB1200 ... BCSR_WHOAMI_DB1200: + sock->board_type = BOARD_TYPE_DB1200; + break; + default: + printk(KERN_INFO "db1xxx-ss: unknown board %d!\n", bid); + ret = -ENODEV; + goto out0; + }; + + /* + * gather resources necessary and optional nice-to-haves to + * operate a socket: + * This includes IRQs for Carddetection/ejection, the card + * itself and optional status change detection. + * Also, the memory areas covered by a socket. For these + * we require the 32bit "pseudo" addresses (see the au1000.h + * header for more information). + */ + + /* card: irq assigned to the card itself. */ + r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "card"); + sock->card_irq = r ? r->start : 0; + + /* insert: irq which triggers on card insertion/ejection */ + r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "insert"); + sock->insert_irq = r ? r->start : -1; + + /* stschg: irq which trigger on card status change (optional) */ + r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "stschg"); + sock->stschg_irq = r ? r->start : -1; + + /* eject: irq which triggers on ejection (DB1200/PB1200 only) */ + r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "eject"); + sock->eject_irq = r ? r->start : -1; + + ret = -ENODEV; + + /* + * pseudo-attr: The 32bit address of the PCMCIA attribute space + * for this socket (usually the 36bit address shifted 4 to the + * right). + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-attr"); + if (!r) { + printk(KERN_ERR "pcmcia%d has no 'pseudo-attr' resource!\n", + sock->nr); + goto out0; + } + sock->phys_attr = r->start; + + /* + * pseudo-mem: The 32bit address of the PCMCIA memory space for + * this socket (usually the 36bit address shifted 4 to the right) + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-mem"); + if (!r) { + printk(KERN_ERR "pcmcia%d has no 'pseudo-mem' resource!\n", + sock->nr); + goto out0; + } + sock->phys_mem = r->start; + + /* + * pseudo-io: The 32bit address of the PCMCIA IO space for this + * socket (usually the 36bit address shifted 4 to the right). + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-io"); + if (!r) { + printk(KERN_ERR "pcmcia%d has no 'pseudo-io' resource!\n", + sock->nr); + goto out0; + } + sock->phys_io = r->start; + + /* + * PCMCIA client drivers use the inb/outb macros to access + * the IO registers. Since mips_io_port_base is added + * to the access address of the mips implementation of + * inb/outb, we need to subtract it here because we want + * to access the I/O or MEM address directly, without + * going through this "mips_io_port_base" mechanism. + */ + sock->virt_io = (void *)(ioremap(sock->phys_io, IO_MAP_SIZE) - + mips_io_port_base); + + if (!sock->virt_io) { + printk(KERN_ERR "pcmcia%d: cannot remap IO area\n", + sock->nr); + ret = -ENOMEM; + goto out0; + } + + sock->socket.ops = &db1x_pcmcia_operations; + sock->socket.owner = THIS_MODULE; + sock->socket.pci_irq = sock->card_irq; + sock->socket.features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD; + sock->socket.map_size = MEM_MAP_SIZE; + sock->socket.io_offset = (unsigned long)sock->virt_io; + sock->socket.dev.parent = &pdev->dev; + sock->socket.resource_ops = &pccard_static_ops; + + platform_set_drvdata(pdev, sock); + + ret = db1x_pcmcia_setup_irqs(sock); + if (ret) { + printk(KERN_ERR "pcmcia%d cannot setup interrupts\n", + sock->nr); + goto out1; + } + + set_stschg(sock, 0); + + ret = pcmcia_register_socket(&sock->socket); + if (ret) { + printk(KERN_ERR "pcmcia%d failed to register\n", sock->nr); + goto out2; + } + + printk(KERN_INFO "Alchemy Db/Pb1xxx pcmcia%d @ io/attr/mem %09llx" + "(%p) %09llx %09llx card/insert/stschg/eject irqs @ %d " + "%d %d %d\n", sock->nr, sock->phys_io, sock->virt_io, + sock->phys_attr, sock->phys_mem, sock->card_irq, + sock->insert_irq, sock->stschg_irq, sock->eject_irq); + + return 0; + +out2: + db1x_pcmcia_free_irqs(sock); +out1: + iounmap((void *)(sock->virt_io + (u32)mips_io_port_base)); +out0: + kfree(sock); + return ret; +} + +static int __devexit db1x_pcmcia_socket_remove(struct platform_device *pdev) +{ + struct db1x_pcmcia_sock *sock = platform_get_drvdata(pdev); + + db1x_pcmcia_free_irqs(sock); + pcmcia_unregister_socket(&sock->socket); + iounmap((void *)(sock->virt_io + (u32)mips_io_port_base)); + kfree(sock); + + return 0; +} + +#ifdef CONFIG_PM +static int db1x_pcmcia_suspend(struct device *dev) +{ + return pcmcia_socket_dev_suspend(dev); +} + +static int db1x_pcmcia_resume(struct device *dev) +{ + return pcmcia_socket_dev_resume(dev); +} + +static struct dev_pm_ops db1x_pcmcia_pmops = { + .resume = db1x_pcmcia_resume, + .suspend = db1x_pcmcia_suspend, + .thaw = db1x_pcmcia_resume, + .freeze = db1x_pcmcia_suspend, +}; + +#define DB1XXX_SS_PMOPS &db1x_pcmcia_pmops + +#else + +#define DB1XXX_SS_PMOPS NULL + +#endif + +static struct platform_driver db1x_pcmcia_socket_driver = { + .driver = { + .name = "db1xxx_pcmcia", + .owner = THIS_MODULE, + .pm = DB1XXX_SS_PMOPS + }, + .probe = db1x_pcmcia_socket_probe, + .remove = __devexit_p(db1x_pcmcia_socket_remove), +}; + +int __init db1x_pcmcia_socket_load(void) +{ + return platform_driver_register(&db1x_pcmcia_socket_driver); +} + +void __exit db1x_pcmcia_socket_unload(void) +{ + platform_driver_unregister(&db1x_pcmcia_socket_driver); +} + +module_init(db1x_pcmcia_socket_load); +module_exit(db1x_pcmcia_socket_unload); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("PCMCIA Socket Services for Alchemy Db/Pb1x00 boards"); +MODULE_AUTHOR("Manuel Lauss"); diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 1a4a3c49cc15..0f98be4450b7 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -42,8 +42,6 @@ MODULE_DESCRIPTION("PCMCIA Driver Services"); MODULE_LICENSE("GPL"); -spinlock_t pcmcia_dev_list_lock; - /*====================================================================*/ static void pcmcia_check_driver(struct pcmcia_driver *p_drv) @@ -126,9 +124,9 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) dynid->id.device_no = device_no; memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); - spin_lock(&pdrv->dynids.lock); + mutex_lock(&pdrv->dynids.lock); list_add_tail(&dynid->node, &pdrv->dynids.list); - spin_unlock(&pdrv->dynids.lock); + mutex_unlock(&pdrv->dynids.lock); if (get_driver(&pdrv->drv)) { retval = driver_attach(&pdrv->drv); @@ -146,12 +144,12 @@ pcmcia_free_dynids(struct pcmcia_driver *drv) { struct pcmcia_dynid *dynid, *n; - spin_lock(&drv->dynids.lock); + mutex_lock(&drv->dynids.lock); list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { list_del(&dynid->node); kfree(dynid); } - spin_unlock(&drv->dynids.lock); + mutex_unlock(&drv->dynids.lock); } static int @@ -182,7 +180,7 @@ int pcmcia_register_driver(struct pcmcia_driver *driver) /* initialize common fields */ driver->drv.bus = &pcmcia_bus_type; driver->drv.owner = driver->owner; - spin_lock_init(&driver->dynids.lock); + mutex_init(&driver->dynids.lock); INIT_LIST_HEAD(&driver->dynids.list); pr_debug("registering driver %s\n", driver->drv.name); @@ -239,30 +237,21 @@ static void pcmcia_release_function(struct kref *ref) static void pcmcia_release_dev(struct device *dev) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + int i; dev_dbg(dev, "releasing device\n"); pcmcia_put_socket(p_dev->socket); + for (i = 0; i < 4; i++) + kfree(p_dev->prod_id[i]); kfree(p_dev->devname); kref_put(&p_dev->function_config->ref, pcmcia_release_function); kfree(p_dev); } -static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc) -{ - if (!s->pcmcia_state.device_add_pending) { - dev_dbg(&s->dev, "scheduling to add %s secondary" - " device to %d\n", mfc ? "mfc" : "pfc", s->sock); - s->pcmcia_state.device_add_pending = 1; - s->pcmcia_state.mfc_pfc = mfc; - schedule_work(&s->device_add); - } - return; -} static int pcmcia_device_probe(struct device *dev) { struct pcmcia_device *p_dev; struct pcmcia_driver *p_drv; - struct pcmcia_device_id *did; struct pcmcia_socket *s; cistpl_config_t cis_config; int ret = 0; @@ -275,18 +264,6 @@ static int pcmcia_device_probe(struct device *dev) p_drv = to_pcmcia_drv(dev->driver); s = p_dev->socket; - /* The PCMCIA code passes the match data in via dev_set_drvdata(dev) - * which is an ugly hack. Once the driver probe is called it may - * and often will overwrite the match data so we must save it first - * - * handle pseudo multifunction devices: - * there are at most two pseudo multifunction devices. - * if we're matching against the first, schedule a - * call which will then check whether there are two - * pseudo devices, and if not, add the second one. - */ - did = dev_get_drvdata(&p_dev->dev); - dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); if ((!p_drv->probe) || (!p_dev->function_config) || @@ -315,9 +292,11 @@ static int pcmcia_device_probe(struct device *dev) goto put_module; } - if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && + mutex_lock(&s->ops_mutex); + if ((s->pcmcia_state.has_pfc) && (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) - pcmcia_add_device_later(p_dev->socket, 0); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); + mutex_unlock(&s->ops_mutex); put_module: if (ret) @@ -336,26 +315,27 @@ static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *le { struct pcmcia_device *p_dev; struct pcmcia_device *tmp; - unsigned long flags; dev_dbg(leftover ? &leftover->dev : &s->dev, "pcmcia_card_remove(%d) %s\n", s->sock, leftover ? leftover->devname : ""); + mutex_lock(&s->ops_mutex); if (!leftover) s->device_count = 0; else s->device_count = 1; + mutex_unlock(&s->ops_mutex); /* unregister all pcmcia_devices registered with this socket, except leftover */ list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { if (p_dev == leftover) continue; - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); list_del(&p_dev->socket_device_list); p_dev->_removed = 1; - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); dev_dbg(&p_dev->dev, "unregistering device\n"); device_unregister(&p_dev->dev); @@ -368,7 +348,6 @@ static int pcmcia_device_remove(struct device *dev) { struct pcmcia_device *p_dev; struct pcmcia_driver *p_drv; - struct pcmcia_device_id *did; int i; p_dev = to_pcmcia_dev(dev); @@ -380,9 +359,8 @@ static int pcmcia_device_remove(struct device *dev) * pseudo multi-function card, we need to unbind * all devices */ - did = dev_get_drvdata(&p_dev->dev); - if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && - (p_dev->socket->device_count != 0) && + if ((p_dev->socket->pcmcia_state.has_pfc) && + (p_dev->socket->device_count > 0) && (p_dev->device_no == 0)) pcmcia_card_remove(p_dev->socket, p_dev); @@ -431,16 +409,20 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_MANFID, &manf_id)) { + mutex_lock(&p_dev->socket->ops_mutex); p_dev->manf_id = manf_id.manf; p_dev->card_id = manf_id.card; p_dev->has_manf_id = 1; p_dev->has_card_id = 1; + mutex_unlock(&p_dev->socket->ops_mutex); } if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_FUNCID, &func_id)) { + mutex_lock(&p_dev->socket->ops_mutex); p_dev->func_id = func_id.func; p_dev->has_func_id = 1; + mutex_unlock(&p_dev->socket->ops_mutex); } else { /* rule of thumb: cards with no FUNCID, but with * common memory device geometry information, are @@ -457,17 +439,21 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) dev_dbg(&p_dev->dev, "mem device geometry probably means " "FUNCID_MEMORY\n"); + mutex_lock(&p_dev->socket->ops_mutex); p_dev->func_id = CISTPL_FUNCID_MEMORY; p_dev->has_func_id = 1; + mutex_unlock(&p_dev->socket->ops_mutex); } kfree(devgeo); } if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, vers1)) { + mutex_lock(&p_dev->socket->ops_mutex); for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { char *tmp; unsigned int length; + char *new; tmp = vers1->str + vers1->ofs[i]; @@ -475,14 +461,17 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) if ((length < 2) || (length > 255)) continue; - p_dev->prod_id[i] = kmalloc(sizeof(char) * length, - GFP_KERNEL); - if (!p_dev->prod_id[i]) + new = kmalloc(sizeof(char) * length, GFP_KERNEL); + if (!new) continue; - p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], - tmp, length); + new = strncpy(new, tmp, length); + + tmp = p_dev->prod_id[i]; + p_dev->prod_id[i] = new; + kfree(tmp); } + mutex_unlock(&p_dev->socket->ops_mutex); } kfree(vers1); @@ -502,7 +491,7 @@ static DEFINE_MUTEX(device_add_lock); struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) { struct pcmcia_device *p_dev, *tmp_dev; - unsigned long flags; + int i; s = pcmcia_get_socket(s); if (!s) @@ -512,16 +501,19 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu pr_debug("adding device to %d, function %d\n", s->sock, function); - /* max of 4 devices per card */ - if (s->device_count == 4) - goto err_put; - p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); if (!p_dev) goto err_put; - p_dev->socket = s; + mutex_lock(&s->ops_mutex); p_dev->device_no = (s->device_count++); + mutex_unlock(&s->ops_mutex); + + /* max of 2 devices per card */ + if (p_dev->device_no >= 2) + goto err_free; + + p_dev->socket = s; p_dev->func = function; p_dev->dev.bus = &pcmcia_bus_type; @@ -538,7 +530,7 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu goto err_free; dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); /* * p_dev->function_config must be the same for all card functions. @@ -556,7 +548,7 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu /* Add to the list in pcmcia_bus_socket */ list_add(&p_dev->socket_device_list, &s->devices_list); - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); if (!p_dev->function_config) { dev_dbg(&p_dev->dev, "creating config_t\n"); @@ -581,14 +573,19 @@ struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int fu return p_dev; err_unreg: - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); list_del(&p_dev->socket_device_list); - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); err_free: + mutex_lock(&s->ops_mutex); + s->device_count--; + mutex_unlock(&s->ops_mutex); + + for (i = 0; i < 4; i++) + kfree(p_dev->prod_id[i]); kfree(p_dev->devname); kfree(p_dev); - s->device_count--; err_put: mutex_unlock(&device_add_lock); pcmcia_put_socket(s); @@ -601,19 +598,23 @@ static int pcmcia_card_add(struct pcmcia_socket *s) { cistpl_longlink_mfc_t mfc; unsigned int no_funcs, i, no_chains; - int ret = 0; + int ret = -EAGAIN; + mutex_lock(&s->ops_mutex); if (!(s->resource_setup_done)) { dev_dbg(&s->dev, "no resources available, delaying card_add\n"); + mutex_unlock(&s->ops_mutex); return -EAGAIN; /* try again, but later... */ } if (pcmcia_validate_mem(s)) { dev_dbg(&s->dev, "validating mem resources failed, " "delaying card_add\n"); + mutex_unlock(&s->ops_mutex); return -EAGAIN; /* try again, but later... */ } + mutex_unlock(&s->ops_mutex); ret = pccard_validate_cis(s, &no_chains); if (ret || !no_chains) { @@ -634,17 +635,7 @@ static int pcmcia_card_add(struct pcmcia_socket *s) } -static void pcmcia_delayed_add_device(struct work_struct *work) -{ - struct pcmcia_socket *s = - container_of(work, struct pcmcia_socket, device_add); - dev_dbg(&s->dev, "adding additional device to %d\n", s->sock); - pcmcia_device_add(s, s->pcmcia_state.mfc_pfc); - s->pcmcia_state.device_add_pending = 0; - s->pcmcia_state.mfc_pfc = 0; -} - -static int pcmcia_requery(struct device *dev, void * _data) +static int pcmcia_requery_callback(struct device *dev, void * _data) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); if (!p_dev->dev.driver) { @@ -655,45 +646,67 @@ static int pcmcia_requery(struct device *dev, void * _data) return 0; } -static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis) -{ - int no_devices = 0; - int ret = 0; - unsigned long flags; - /* must be called with skt_mutex held */ - dev_dbg(&skt->dev, "re-scanning socket %d\n", skt->sock); +static void pcmcia_requery(struct pcmcia_socket *s) +{ + int present, has_pfc; - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - if (list_empty(&skt->devices_list)) - no_devices = 1; - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); + present = s->pcmcia_state.present; + mutex_unlock(&s->ops_mutex); - /* If this is because of a CIS override, start over */ - if (new_cis && !no_devices) - pcmcia_card_remove(skt, NULL); + if (!present) + return; - /* if no devices were added for this socket yet because of - * missing resource information or other trouble, we need to - * do this now. */ - if (no_devices || new_cis) { - ret = pcmcia_card_add(skt); - if (ret) - return; + if (s->functions == 0) { + pcmcia_card_add(s); + return; } /* some device information might have changed because of a CIS * update or because we can finally read it correctly... so * determine it again, overwriting old values if necessary. */ - bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); + bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback); + + /* if the CIS changed, we need to check whether the number of + * functions changed. */ + if (s->fake_cis) { + int old_funcs, new_funcs; + cistpl_longlink_mfc_t mfc; + + /* does this cis override add or remove functions? */ + old_funcs = s->functions; + + if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, + &mfc)) + new_funcs = mfc.nfn; + else + new_funcs = 1; + if (old_funcs > new_funcs) { + pcmcia_card_remove(s, NULL); + pcmcia_card_add(s); + } else if (new_funcs > old_funcs) { + s->functions = new_funcs; + pcmcia_device_add(s, 1); + } + } + + /* If the PCMCIA device consists of two pseudo devices, + * call pcmcia_device_add() -- which will fail if both + * devices are already registered. */ + mutex_lock(&s->ops_mutex); + has_pfc = s->pcmcia_state.has_pfc; + mutex_unlock(&s->ops_mutex); + if (has_pfc) + pcmcia_device_add(s, 0); /* we re-scan all devices, not just the ones connected to this * socket. This does not matter, though. */ - ret = bus_rescan_devices(&pcmcia_bus_type); - if (ret) - printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n"); + if (bus_rescan_devices(&pcmcia_bus_type)) + dev_warn(&s->dev, "rescanning the bus failed\n"); } + #ifdef CONFIG_PCMCIA_LOAD_CIS /** @@ -710,9 +723,6 @@ static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) struct pcmcia_socket *s = dev->socket; const struct firmware *fw; int ret = -ENOMEM; - int no_funcs; - int old_funcs; - cistpl_longlink_mfc_t mfc; if (!filename) return -EINVAL; @@ -739,19 +749,8 @@ static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) /* update information */ pcmcia_device_query(dev); - /* does this cis override add or remove functions? */ - old_funcs = s->functions; - - if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) - no_funcs = mfc.nfn; - else - no_funcs = 1; - s->functions = no_funcs; - - if (old_funcs > no_funcs) - pcmcia_card_remove(s, dev); - else if (no_funcs > old_funcs) - pcmcia_add_device_later(s, 1); + /* requery (as number of functions might have changed) */ + pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); } release: release_firmware(fw); @@ -818,9 +817,14 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev, if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { if (dev->device_no != did->device_no) return 0; + mutex_lock(&dev->socket->ops_mutex); + dev->socket->pcmcia_state.has_pfc = 1; + mutex_unlock(&dev->socket->ops_mutex); } if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { + int ret; + if ((!dev->has_func_id) || (dev->func_id != did->func_id)) return 0; @@ -835,10 +839,15 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev, * after it has re-checked that there is no possible module * with a prod_id/manf_id/card_id match. */ - dev_dbg(&dev->dev, - "skipping FUNC_ID match until userspace interaction\n"); - if (!dev->allow_func_id_match) + mutex_lock(&dev->socket->ops_mutex); + ret = dev->allow_func_id_match; + mutex_unlock(&dev->socket->ops_mutex); + + if (!ret) { + dev_dbg(&dev->dev, + "skipping FUNC_ID match until userspace ACK\n"); return 0; + } } if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { @@ -859,8 +868,6 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev, return 0; } - dev_set_drvdata(&dev->dev, did); - return 1; } @@ -873,16 +880,16 @@ static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) struct pcmcia_dynid *dynid; /* match dynamic devices first */ - spin_lock(&p_drv->dynids.lock); + mutex_lock(&p_drv->dynids.lock); list_for_each_entry(dynid, &p_drv->dynids.list, node) { dev_dbg(dev, "trying to match to %s\n", drv->name); if (pcmcia_devmatch(p_dev, &dynid->id)) { dev_dbg(dev, "matched to %s\n", drv->name); - spin_unlock(&p_drv->dynids.lock); + mutex_unlock(&p_drv->dynids.lock); return 1; } } - spin_unlock(&p_drv->dynids.lock); + mutex_unlock(&p_drv->dynids.lock); #ifdef CONFIG_PCMCIA_IOCTL /* matching by cardmgr */ @@ -970,13 +977,14 @@ static int runtime_suspend(struct device *dev) return rc; } -static void runtime_resume(struct device *dev) +static int runtime_resume(struct device *dev) { int rc; down(&dev->sem); rc = pcmcia_dev_resume(dev); up(&dev->sem); + return rc; } /************************ per-device sysfs output ***************************/ @@ -1027,7 +1035,7 @@ static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) ret = runtime_suspend(dev); else if (p_dev->suspended && !strncmp(buf, "on", 2)) - runtime_resume(dev); + ret = runtime_resume(dev); return ret ? ret : count; } @@ -1059,19 +1067,14 @@ static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); - int ret; if (!count) return -EINVAL; - mutex_lock(&p_dev->socket->skt_mutex); + mutex_lock(&p_dev->socket->ops_mutex); p_dev->allow_func_id_match = 1; - mutex_unlock(&p_dev->socket->skt_mutex); - - ret = bus_rescan_devices(&pcmcia_bus_type); - if (ret) - printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " - "allowing func_id matches\n"); + mutex_unlock(&p_dev->socket->ops_mutex); + pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY); return count; } @@ -1099,8 +1102,13 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) struct pcmcia_driver *p_drv = NULL; int ret = 0; - if (p_dev->suspended) + mutex_lock(&p_dev->socket->ops_mutex); + if (p_dev->suspended) { + mutex_unlock(&p_dev->socket->ops_mutex); return 0; + } + p_dev->suspended = 1; + mutex_unlock(&p_dev->socket->ops_mutex); dev_dbg(dev, "suspending\n"); @@ -1117,6 +1125,9 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) "pcmcia: device %s (driver %s) did " "not want to go to sleep (%d)\n", p_dev->devname, p_drv->drv.name, ret); + mutex_lock(&p_dev->socket->ops_mutex); + p_dev->suspended = 0; + mutex_unlock(&p_dev->socket->ops_mutex); goto out; } } @@ -1127,8 +1138,6 @@ static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) } out: - if (!ret) - p_dev->suspended = 1; return ret; } @@ -1139,8 +1148,13 @@ static int pcmcia_dev_resume(struct device *dev) struct pcmcia_driver *p_drv = NULL; int ret = 0; - if (!p_dev->suspended) + mutex_lock(&p_dev->socket->ops_mutex); + if (!p_dev->suspended) { + mutex_unlock(&p_dev->socket->ops_mutex); return 0; + } + p_dev->suspended = 0; + mutex_unlock(&p_dev->socket->ops_mutex); dev_dbg(dev, "resuming\n"); @@ -1161,8 +1175,6 @@ static int pcmcia_dev_resume(struct device *dev) ret = p_drv->resume(p_dev); out: - if (!ret) - p_dev->suspended = 0; return ret; } @@ -1237,13 +1249,22 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) switch (event) { case CS_EVENT_CARD_REMOVAL: + mutex_lock(&s->ops_mutex); s->pcmcia_state.present = 0; + mutex_unlock(&s->ops_mutex); pcmcia_card_remove(skt, NULL); handle_event(skt, event); + mutex_lock(&s->ops_mutex); + destroy_cis_cache(s); + mutex_unlock(&s->ops_mutex); break; case CS_EVENT_CARD_INSERTION: + mutex_lock(&s->ops_mutex); + s->pcmcia_state.has_pfc = 0; s->pcmcia_state.present = 1; + destroy_cis_cache(s); /* to be on the safe side... */ + mutex_unlock(&s->ops_mutex); pcmcia_card_add(skt); handle_event(skt, event); break; @@ -1251,8 +1272,24 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) case CS_EVENT_EJECTION_REQUEST: break; - case CS_EVENT_PM_SUSPEND: case CS_EVENT_PM_RESUME: + if (verify_cis_cache(skt) != 0) { + dev_dbg(&skt->dev, "cis mismatch - different card\n"); + /* first, remove the card */ + ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); + mutex_lock(&s->ops_mutex); + destroy_cis_cache(skt); + kfree(skt->fake_cis); + skt->fake_cis = NULL; + mutex_unlock(&s->ops_mutex); + /* now, add the new card */ + ds_event(skt, CS_EVENT_CARD_INSERTION, + CS_EVENT_PRI_LOW); + } + handle_event(skt, event); + break; + + case CS_EVENT_PM_SUSPEND: case CS_EVENT_RESET_PHYSICAL: case CS_EVENT_CARD_RESET: default: @@ -1275,9 +1312,13 @@ struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) if (!p_dev) return NULL; + mutex_lock(&p_dev->socket->ops_mutex); if (!p_dev->socket->pcmcia_state.present) goto out; + if (p_dev->socket->pcmcia_state.dead) + goto out; + if (p_dev->_removed) goto out; @@ -1286,6 +1327,7 @@ struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) ret = p_dev; out: + mutex_unlock(&p_dev->socket->ops_mutex); pcmcia_put_dev(p_dev); return ret; } @@ -1295,7 +1337,8 @@ EXPORT_SYMBOL(pcmcia_dev_present); static struct pcmcia_callback pcmcia_bus_callback = { .owner = THIS_MODULE, .event = ds_event, - .requery = pcmcia_bus_rescan, + .requery = pcmcia_requery, + .validate = pccard_validate_cis, .suspend = pcmcia_bus_suspend, .resume = pcmcia_bus_resume, }; @@ -1313,17 +1356,17 @@ static int __devinit pcmcia_bus_add_socket(struct device *dev, return -ENODEV; } - /* - * Ugly. But we want to wait for the socket threads to have started up. - * We really should let the drivers themselves drive some of this.. - */ - msleep(250); + ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); + if (ret) { + dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); + pcmcia_put_socket(socket); + return ret; + } #ifdef CONFIG_PCMCIA_IOCTL init_waitqueue_head(&socket->queue); #endif INIT_LIST_HEAD(&socket->devices_list); - INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); memset(&socket->pcmcia_state, 0, sizeof(u8)); socket->device_count = 0; @@ -1345,14 +1388,20 @@ static void pcmcia_bus_remove_socket(struct device *dev, if (!socket) return; + mutex_lock(&socket->ops_mutex); socket->pcmcia_state.dead = 1; + mutex_unlock(&socket->ops_mutex); + pccard_register_pcmcia(socket, NULL); /* unregister any unbound devices */ mutex_lock(&socket->skt_mutex); pcmcia_card_remove(socket, NULL); + release_cis_mem(socket); mutex_unlock(&socket->skt_mutex); + sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); + pcmcia_put_socket(socket); return; @@ -1383,8 +1432,6 @@ static int __init init_pcmcia_bus(void) { int ret; - spin_lock_init(&pcmcia_dev_list_lock); - ret = bus_register(&pcmcia_bus_type); if (ret < 0) { printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); diff --git a/drivers/pcmcia/electra_cf.c b/drivers/pcmcia/electra_cf.c index d187ba4c5e0e..89cfddca089a 100644 --- a/drivers/pcmcia/electra_cf.c +++ b/drivers/pcmcia/electra_cf.c @@ -347,7 +347,7 @@ static int __devexit electra_cf_remove(struct of_device *ofdev) return 0; } -static struct of_device_id electra_cf_match[] = { +static const struct of_device_id electra_cf_match[] = { { .compatible = "electra-cf", }, diff --git a/drivers/pcmcia/i82365.h b/drivers/pcmcia/i82365.h index 622860c689d9..849ef1b5d687 100644 --- a/drivers/pcmcia/i82365.h +++ b/drivers/pcmcia/i82365.h @@ -77,8 +77,8 @@ #define I365_VPP2_5V 0x04 /* Vpp2 = 5.0v */ #define I365_VPP2_12V 0x08 /* Vpp2 = 12.0v */ #define I365_VPP1_MASK 0x03 /* Mask for turning off Vpp1 */ -#define I365_VPP1_5V 0x01 /* Vpp2 = 5.0v */ -#define I365_VPP1_12V 0x02 /* Vpp2 = 12.0v */ +#define I365_VPP1_5V 0x01 /* Vpp1 = 5.0v */ +#define I365_VPP1_12V 0x02 /* Vpp1 = 12.0v */ /* Flags for I365_INTCTL */ #define I365_RING_ENA 0x80 diff --git a/drivers/pcmcia/m32r_cfc.c b/drivers/pcmcia/m32r_cfc.c index 26a621c9e2fc..0ece2cd4a85e 100644 --- a/drivers/pcmcia/m32r_cfc.c +++ b/drivers/pcmcia/m32r_cfc.c @@ -764,7 +764,7 @@ static int __init init_m32r_pcc(void) for (i = 0 ; i < pcc_sockets ; i++) { socket[i].socket.dev.parent = &pcc_device.dev; socket[i].socket.ops = &pcc_operations; - socket[i].socket.resource_ops = &pccard_nonstatic_ops; + socket[i].socket.resource_ops = &pccard_static_ops; socket[i].socket.owner = THIS_MODULE; socket[i].number = i; ret = pcmcia_register_socket(&socket[i].socket); diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c index 7f79c4e169ae..61c215918128 100644 --- a/drivers/pcmcia/m8xx_pcmcia.c +++ b/drivers/pcmcia/m8xx_pcmcia.c @@ -1233,7 +1233,7 @@ static int __init m8xx_probe(struct of_device *ofdev, socket[i].socket.io_offset = 0; socket[i].socket.pci_irq = pcmcia_schlvl; socket[i].socket.ops = &m8xx_services; - socket[i].socket.resource_ops = &pccard_nonstatic_ops; + socket[i].socket.resource_ops = &pccard_iodyn_ops; socket[i].socket.cb_dev = NULL; socket[i].socket.dev.parent = &ofdev->dev; socket[i].pcmcia = pcmcia; @@ -1303,7 +1303,7 @@ static int m8xx_resume(struct platform_device *pdev) #define m8xx_resume NULL #endif -static struct of_device_id m8xx_pcmcia_match[] = { +static const struct of_device_id m8xx_pcmcia_match[] = { { .type = "pcmcia", .compatible = "fsl,pq-pcmcia", diff --git a/drivers/pcmcia/o2micro.h b/drivers/pcmcia/o2micro.h index 624442fc0d35..e74bebac2695 100644 --- a/drivers/pcmcia/o2micro.h +++ b/drivers/pcmcia/o2micro.h @@ -116,13 +116,12 @@ static int o2micro_override(struct yenta_socket *socket) * from Eric Still, 02Micro. */ u8 a, b; + bool use_speedup; if (PCI_FUNC(socket->dev->devfn) == 0) { a = config_readb(socket, O2_RESERVED1); b = config_readb(socket, O2_RESERVED2); - - dev_printk(KERN_INFO, &socket->dev->dev, - "O2: res at 0x94/0xD4: %02x/%02x\n", a, b); + dev_dbg(&socket->dev->dev, "O2: 0x94/0xD4: %02x/%02x\n", a, b); switch (socket->dev->device) { /* @@ -135,23 +134,37 @@ static int o2micro_override(struct yenta_socket *socket) case PCI_DEVICE_ID_O2_6812: case PCI_DEVICE_ID_O2_6832: case PCI_DEVICE_ID_O2_6836: - case PCI_DEVICE_ID_O2_6933: - dev_printk(KERN_INFO, &socket->dev->dev, - "Yenta O2: old bridge, disabling read " - "prefetch/write burst\n"); - config_writeb(socket, O2_RESERVED1, - a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); - config_writeb(socket, O2_RESERVED2, - b & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); + case PCI_DEVICE_ID_O2_6933: + use_speedup = false; break; - default: - dev_printk(KERN_INFO , &socket->dev->dev, - "O2: enabling read prefetch/write burst\n"); + use_speedup = true; + break; + } + + /* the user may override our decision */ + if (strcasecmp(o2_speedup, "on") == 0) + use_speedup = true; + else if (strcasecmp(o2_speedup, "off") == 0) + use_speedup = false; + else if (strcasecmp(o2_speedup, "default") != 0) + dev_warn(&socket->dev->dev, + "O2: Unknown parameter, using 'default'"); + + if (use_speedup) { + dev_info(&socket->dev->dev, + "O2: enabling read prefetch/write burst\n"); + config_writeb(socket, O2_RESERVED1, + a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + config_writeb(socket, O2_RESERVED2, + b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + } else { + dev_info(&socket->dev->dev, + "O2: disabling read prefetch/write burst\n"); config_writeb(socket, O2_RESERVED1, - a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); config_writeb(socket, O2_RESERVED2, - b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + b & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); } } diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c index 663781d20129..3ef991552398 100644 --- a/drivers/pcmcia/omap_cf.c +++ b/drivers/pcmcia/omap_cf.c @@ -71,8 +71,6 @@ struct omap_cf_socket { #define POLL_INTERVAL (2 * HZ) -#define SZ_2K (2 * SZ_1K) - /*--------------------------------------------------------------------------*/ static int omap_cf_ss_init(struct pcmcia_socket *s) diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c index f73fd5beaa37..13a7132cf688 100644 --- a/drivers/pcmcia/pcmcia_ioctl.c +++ b/drivers/pcmcia/pcmcia_ioctl.c @@ -62,16 +62,15 @@ static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, unsigned int function) { struct pcmcia_device *p_dev = NULL; - unsigned long flags; - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { if (p_dev->func == function) { - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); return pcmcia_get_dev(p_dev); } } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); return NULL; } @@ -169,7 +168,6 @@ static int pcmcia_adjust_resource_info(adjust_t *adj) { struct pcmcia_socket *s; int ret = -ENOSYS; - unsigned long flags; down_read(&pcmcia_socket_list_rwsem); list_for_each_entry(s, &pcmcia_socket_list, socket_list) { @@ -182,14 +180,13 @@ static int pcmcia_adjust_resource_info(adjust_t *adj) /* you can't use the old interface if the new * one was used before */ - spin_lock_irqsave(&s->lock, flags); + mutex_lock(&s->ops_mutex); if ((s->resource_setup_new) && !(s->resource_setup_old)) { - spin_unlock_irqrestore(&s->lock, flags); + mutex_unlock(&s->ops_mutex); continue; } else if (!(s->resource_setup_old)) s->resource_setup_old = 1; - spin_unlock_irqrestore(&s->lock, flags); switch (adj->Resource) { case RES_MEMORY_RANGE: @@ -208,10 +205,9 @@ static int pcmcia_adjust_resource_info(adjust_t *adj) * last call to adjust_resource_info, we * always need to assume this is the latest * one... */ - spin_lock_irqsave(&s->lock, flags); s->resource_setup_done = 1; - spin_unlock_irqrestore(&s->lock, flags); } + mutex_unlock(&s->ops_mutex); } } up_read(&pcmcia_socket_list_rwsem); @@ -470,7 +466,6 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) struct pcmcia_driver *p_drv; struct pcmcia_device *p_dev; int ret = 0; - unsigned long flags; s = pcmcia_get_socket(s); if (!s) @@ -490,7 +485,7 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) goto err_put_driver; } - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { if (p_dev->func == bind_info->function) { if ((p_dev->dev.driver == &p_drv->drv)) { @@ -499,7 +494,7 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) * registered, and it was registered * by userspace before, we need to * return the "instance". */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); bind_info->instance = p_dev; ret = -EBUSY; goto err_put_module; @@ -507,7 +502,7 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) /* the correct driver managed to bind * itself magically to the correct * device. */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); p_dev->cardmgr = p_drv; ret = 0; goto err_put_module; @@ -516,12 +511,12 @@ static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) /* there's already a device available where * no device has been bound to yet. So we don't * need to register a device! */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); goto rescan; } } } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); p_dev = pcmcia_device_add(s, bind_info->function); if (!p_dev) { @@ -578,7 +573,6 @@ static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int dev_node_t *node; struct pcmcia_device *p_dev; struct pcmcia_driver *p_drv; - unsigned long flags; int ret = 0; #ifdef CONFIG_CARDBUS @@ -617,7 +611,7 @@ static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int } #endif - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + mutex_lock(&s->ops_mutex); list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { if (p_dev->func == bind_info->function) { p_dev = pcmcia_get_dev(p_dev); @@ -626,11 +620,11 @@ static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int goto found; } } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); return -ENODEV; found: - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + mutex_unlock(&s->ops_mutex); p_drv = to_pcmcia_drv(p_dev->dev.driver); if (p_drv && !p_dev->_locked) { @@ -931,16 +925,16 @@ static int ds_ioctl(struct inode *inode, struct file *file, ret = pccard_validate_cis(s, &buf->cisinfo.Chains); break; case DS_SUSPEND_CARD: - ret = pcmcia_suspend_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); break; case DS_RESUME_CARD: - ret = pcmcia_resume_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); break; case DS_EJECT_CARD: - err = pcmcia_eject_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); break; case DS_INSERT_CARD: - err = pcmcia_insert_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); break; case DS_ACCESS_CONFIGURATION_REGISTER: if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c index d5db95644b64..b2df04199a21 100644 --- a/drivers/pcmcia/pcmcia_resource.c +++ b/drivers/pcmcia/pcmcia_resource.c @@ -43,6 +43,39 @@ module_param(io_speed, int, 0444); static u8 pcmcia_used_irq[NR_IRQS]; #endif +static int pcmcia_adjust_io_region(struct resource *res, unsigned long start, + unsigned long end, struct pcmcia_socket *s) +{ + if (s->resource_ops->adjust_io_region) + return s->resource_ops->adjust_io_region(res, start, end, s); + return -ENOMEM; +} + +static struct resource *pcmcia_find_io_region(unsigned long base, int num, + unsigned long align, + struct pcmcia_socket *s) +{ + if (s->resource_ops->find_io) + return s->resource_ops->find_io(base, num, align, s); + return NULL; +} + +int pcmcia_validate_mem(struct pcmcia_socket *s) +{ + if (s->resource_ops->validate_mem) + return s->resource_ops->validate_mem(s); + /* if there is no callback, we can assume that everything is OK */ + return 0; +} + +struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, + int low, struct pcmcia_socket *s) +{ + if (s->resource_ops->find_mem) + return s->resource_ops->find_mem(base, num, align, low, s); + return NULL; +} + /** alloc_io_space * @@ -158,14 +191,18 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, return -EINVAL; s = p_dev->socket; + + mutex_lock(&s->ops_mutex); c = p_dev->function_config; if (!(c->state & CONFIG_LOCKED)) { dev_dbg(&s->dev, "Configuration isnt't locked\n"); + mutex_unlock(&s->ops_mutex); return -EACCES; } addr = (c->ConfigBase + reg->Offset) >> 1; + mutex_unlock(&s->ops_mutex); switch (reg->Action) { case CS_READ: @@ -190,6 +227,7 @@ int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, memreq_t *req) { struct pcmcia_socket *s = p_dev->socket; + int ret; wh--; if (wh >= MAX_WIN) @@ -198,12 +236,13 @@ int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, dev_dbg(&s->dev, "failure: requested page is zero\n"); return -EINVAL; } + mutex_lock(&s->ops_mutex); s->win[wh].card_start = req->CardOffset; - if (s->ops->set_mem_map(s, &s->win[wh]) != 0) { - dev_dbg(&s->dev, "failed to set_mem_map\n"); - return -EIO; - } - return 0; + ret = s->ops->set_mem_map(s, &s->win[wh]); + if (ret) + dev_warn(&s->dev, "failed to set_mem_map\n"); + mutex_unlock(&s->ops_mutex); + return ret; } /* pcmcia_map_mem_page */ EXPORT_SYMBOL(pcmcia_map_mem_page); @@ -219,14 +258,18 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev, config_t *c; s = p_dev->socket; + + mutex_lock(&s->ops_mutex); c = p_dev->function_config; if (!(s->state & SOCKET_PRESENT)) { dev_dbg(&s->dev, "No card present\n"); + mutex_unlock(&s->ops_mutex); return -ENODEV; } if (!(c->state & CONFIG_LOCKED)) { dev_dbg(&s->dev, "Configuration isnt't locked\n"); + mutex_unlock(&s->ops_mutex); return -EACCES; } @@ -251,10 +294,12 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev, (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { if (mod->Vpp1 != mod->Vpp2) { dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); + mutex_unlock(&s->ops_mutex); return -EINVAL; } s->socket.Vpp = mod->Vpp1; if (s->ops->set_socket(s, &s->socket)) { + mutex_unlock(&s->ops_mutex); dev_printk(KERN_WARNING, &s->dev, "Unable to set VPP\n"); return -EIO; @@ -262,6 +307,7 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev, } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); + mutex_unlock(&s->ops_mutex); return -EINVAL; } @@ -286,6 +332,7 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev, s->ops->set_io_map(s, &io_on); } } + mutex_unlock(&s->ops_mutex); return 0; } /* modify_configuration */ @@ -296,9 +343,11 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev) { pccard_io_map io = { 0, 0, 0, 0, 1 }; struct pcmcia_socket *s = p_dev->socket; - config_t *c = p_dev->function_config; + config_t *c; int i; + mutex_lock(&s->ops_mutex); + c = p_dev->function_config; if (p_dev->_locked) { p_dev->_locked = 0; if (--(s->lock_count) == 0) { @@ -321,6 +370,7 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev) s->ops->set_io_map(s, &io); } } + mutex_unlock(&s->ops_mutex); return 0; } /* pcmcia_release_configuration */ @@ -337,10 +387,14 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev) static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) { struct pcmcia_socket *s = p_dev->socket; - config_t *c = p_dev->function_config; + int ret = -EINVAL; + config_t *c; + + mutex_lock(&s->ops_mutex); + c = p_dev->function_config; if (!p_dev->_io) - return -EINVAL; + goto out; p_dev->_io = 0; @@ -348,7 +402,7 @@ static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) (c->io.NumPorts1 != req->NumPorts1) || (c->io.BasePort2 != req->BasePort2) || (c->io.NumPorts2 != req->NumPorts2)) - return -EINVAL; + goto out; c->state &= ~CONFIG_IO_REQ; @@ -356,28 +410,38 @@ static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) if (req->NumPorts2) release_io_space(s, req->BasePort2, req->NumPorts2); - return 0; +out: + mutex_unlock(&s->ops_mutex); + + return ret; } /* pcmcia_release_io */ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) { struct pcmcia_socket *s = p_dev->socket; - config_t *c = p_dev->function_config; + config_t *c; + int ret = -EINVAL; + + mutex_lock(&s->ops_mutex); + + c = p_dev->function_config; if (!p_dev->_irq) - return -EINVAL; + goto out; + p_dev->_irq = 0; if (c->state & CONFIG_LOCKED) - return -EACCES; + goto out; + if (c->irq.Attributes != req->Attributes) { dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n"); - return -EINVAL; + goto out; } if (s->irq.AssignedIRQ != req->AssignedIRQ) { dev_dbg(&s->dev, "IRQ must match assigned one\n"); - return -EINVAL; + goto out; } if (--s->irq.Config == 0) { c->state &= ~CONFIG_IRQ_REQ; @@ -390,8 +454,12 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) #ifdef CONFIG_PCMCIA_PROBE pcmcia_used_irq[req->AssignedIRQ]--; #endif + ret = 0; - return 0; +out: + mutex_unlock(&s->ops_mutex); + + return ret; } /* pcmcia_release_irq */ @@ -404,10 +472,12 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) if (wh >= MAX_WIN) return -EINVAL; + mutex_lock(&s->ops_mutex); win = &s->win[wh]; if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) { dev_dbg(&s->dev, "not releasing unknown window\n"); + mutex_unlock(&s->ops_mutex); return -EINVAL; } @@ -423,6 +493,7 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) win->res = NULL; } p_dev->_win &= ~CLIENT_WIN_REQ(wh); + mutex_unlock(&s->ops_mutex); return 0; } /* pcmcia_release_window */ @@ -445,8 +516,11 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); return -EINVAL; } + + mutex_lock(&s->ops_mutex); c = p_dev->function_config; if (c->state & CONFIG_LOCKED) { + mutex_unlock(&s->ops_mutex); dev_dbg(&s->dev, "Configuration is locked\n"); return -EACCES; } @@ -454,6 +528,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, /* Do power control. We don't allow changes in Vcc. */ s->socket.Vpp = req->Vpp; if (s->ops->set_socket(s, &s->socket)) { + mutex_unlock(&s->ops_mutex); dev_printk(KERN_WARNING, &s->dev, "Unable to set socket state\n"); return -EINVAL; @@ -476,6 +551,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, s->socket.io_irq = 0; s->ops->set_socket(s, &s->socket); s->lock_count++; + mutex_unlock(&s->ops_mutex); /* Set up CIS configuration registers */ base = c->ConfigBase = req->ConfigBase; @@ -524,6 +600,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, /* Configure I/O windows */ if (c->state & CONFIG_IO_REQ) { + mutex_lock(&s->ops_mutex); iomap.speed = io_speed; for (i = 0; i < MAX_IO_WIN; i++) if (s->io[i].res) { @@ -542,6 +619,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, s->ops->set_io_map(s, &iomap); s->io[i].Config++; } + mutex_unlock(&s->ops_mutex); } c->state |= CONFIG_LOCKED; @@ -560,54 +638,65 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) { struct pcmcia_socket *s = p_dev->socket; config_t *c; + int ret = -EINVAL; + + mutex_lock(&s->ops_mutex); if (!(s->state & SOCKET_PRESENT)) { dev_dbg(&s->dev, "No card present\n"); - return -ENODEV; + goto out; } if (!req) - return -EINVAL; + goto out; + c = p_dev->function_config; if (c->state & CONFIG_LOCKED) { dev_dbg(&s->dev, "Configuration is locked\n"); - return -EACCES; + goto out; } if (c->state & CONFIG_IO_REQ) { dev_dbg(&s->dev, "IO already configured\n"); - return -EBUSY; + goto out; } if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); - return -EINVAL; + goto out; } if ((req->NumPorts2 > 0) && (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); - return -EINVAL; + goto out; } dev_dbg(&s->dev, "trying to allocate resource 1\n"); - if (alloc_io_space(s, req->Attributes1, &req->BasePort1, - req->NumPorts1, req->IOAddrLines)) { + ret = alloc_io_space(s, req->Attributes1, &req->BasePort1, + req->NumPorts1, req->IOAddrLines); + if (ret) { dev_dbg(&s->dev, "allocation of resource 1 failed\n"); - return -EBUSY; + goto out; } if (req->NumPorts2) { dev_dbg(&s->dev, "trying to allocate resource 2\n"); - if (alloc_io_space(s, req->Attributes2, &req->BasePort2, - req->NumPorts2, req->IOAddrLines)) { + ret = alloc_io_space(s, req->Attributes2, &req->BasePort2, + req->NumPorts2, req->IOAddrLines); + if (ret) { dev_dbg(&s->dev, "allocation of resource 2 failed\n"); release_io_space(s, req->BasePort1, req->NumPorts1); - return -EBUSY; + goto out; } } c->io = *req; c->state |= CONFIG_IO_REQ; p_dev->_io = 1; - return 0; + dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret); + +out: + mutex_unlock(&s->ops_mutex); + + return ret; } /* pcmcia_request_io */ EXPORT_SYMBOL(pcmcia_request_io); @@ -636,18 +725,20 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) int ret = -EINVAL, irq = 0; int type; + mutex_lock(&s->ops_mutex); + if (!(s->state & SOCKET_PRESENT)) { dev_dbg(&s->dev, "No card present\n"); - return -ENODEV; + goto out; } c = p_dev->function_config; if (c->state & CONFIG_LOCKED) { dev_dbg(&s->dev, "Configuration is locked\n"); - return -EACCES; + goto out; } if (c->state & CONFIG_IRQ_REQ) { dev_dbg(&s->dev, "IRQ already configured\n"); - return -EBUSY; + goto out; } /* Decide what type of interrupt we are registering */ @@ -708,7 +799,7 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) if (ret && !s->irq.AssignedIRQ) { if (!s->pci_irq) { dev_printk(KERN_INFO, &s->dev, "no IRQ found\n"); - return ret; + goto out; } type = IRQF_SHARED; irq = s->pci_irq; @@ -720,7 +811,7 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) if (ret) { dev_printk(KERN_INFO, &s->dev, "request_irq() failed\n"); - return ret; + goto out; } } @@ -743,7 +834,10 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) pcmcia_used_irq[irq]++; #endif - return 0; + ret = 0; +out: + mutex_unlock(&s->ops_mutex); + return ret; } /* pcmcia_request_irq */ EXPORT_SYMBOL(pcmcia_request_irq); @@ -796,6 +890,7 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha return -EINVAL; } + mutex_lock(&s->ops_mutex); win = &s->win[w]; if (!(s->features & SS_CAP_STATIC_MAP)) { @@ -803,6 +898,7 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha (req->Attributes & WIN_MAP_BELOW_1MB), s); if (!win->res) { dev_dbg(&s->dev, "allocating mem region failed\n"); + mutex_unlock(&s->ops_mutex); return -EINVAL; } } @@ -821,8 +917,10 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha if (req->Attributes & WIN_USE_WAIT) win->flags |= MAP_USE_WAIT; win->card_start = 0; + if (s->ops->set_mem_map(s, win) != 0) { dev_dbg(&s->dev, "failed to set memory mapping\n"); + mutex_unlock(&s->ops_mutex); return -EIO; } s->state |= SOCKET_WIN_REQ(w); @@ -833,6 +931,7 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha else req->Base = win->res->start; + mutex_unlock(&s->ops_mutex); *wh = w + 1; return 0; diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c index f8401a0ef89b..e6f7d410aed6 100644 --- a/drivers/pcmcia/rsrc_mgr.c +++ b/drivers/pcmcia/rsrc_mgr.c @@ -21,60 +21,12 @@ #include <pcmcia/cistpl.h> #include "cs_internal.h" - -int pcmcia_validate_mem(struct pcmcia_socket *s) -{ - if (s->resource_ops->validate_mem) - return s->resource_ops->validate_mem(s); - /* if there is no callback, we can assume that everything is OK */ - return 0; -} -EXPORT_SYMBOL(pcmcia_validate_mem); - -int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start, - unsigned long r_end, struct pcmcia_socket *s) -{ - if (s->resource_ops->adjust_io_region) - return s->resource_ops->adjust_io_region(res, r_start, r_end, s); - return -ENOMEM; -} -EXPORT_SYMBOL(pcmcia_adjust_io_region); - -struct resource *pcmcia_find_io_region(unsigned long base, int num, - unsigned long align, struct pcmcia_socket *s) -{ - if (s->resource_ops->find_io) - return s->resource_ops->find_io(base, num, align, s); - return NULL; -} -EXPORT_SYMBOL(pcmcia_find_io_region); - -struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, - int low, struct pcmcia_socket *s) -{ - if (s->resource_ops->find_mem) - return s->resource_ops->find_mem(base, num, align, low, s); - return NULL; -} -EXPORT_SYMBOL(pcmcia_find_mem_region); - -void release_resource_db(struct pcmcia_socket *s) -{ - if (s->resource_ops->exit) - s->resource_ops->exit(s); -} - - static int static_init(struct pcmcia_socket *s) { - unsigned long flags; - /* the good thing about SS_CAP_STATIC_MAP sockets is * that they don't need a resource database */ - spin_lock_irqsave(&s->lock, flags); s->resource_setup_done = 1; - spin_unlock_irqrestore(&s->lock, flags); return 0; } diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index c67638fe6914..4663b3fa9f96 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -55,11 +55,10 @@ struct resource_map { struct socket_data { struct resource_map mem_db; + struct resource_map mem_db_valid; struct resource_map io_db; - unsigned int rsrc_mem_probe; }; -static DEFINE_MUTEX(rsrc_mutex); #define MEM_PROBE_LOW (1 << 0) #define MEM_PROBE_HIGH (1 << 1) @@ -125,8 +124,10 @@ static int add_interval(struct resource_map *map, u_long base, u_long num) struct resource_map *p, *q; for (p = map; ; p = p->next) { - if ((p != map) && (p->base+p->num-1 >= base)) - return -1; + if ((p != map) && (p->base+p->num >= base)) { + p->num = max(num + base - p->base, p->num); + return 0; + } if ((p->next == map) || (p->next->base > base+num-1)) break; } @@ -264,36 +265,44 @@ static void do_io_probe(struct pcmcia_socket *s, unsigned int base, } #endif -/*====================================================================== - - This is tricky... when we set up CIS memory, we try to validate - the memory window space allocations. - -======================================================================*/ +/*======================================================================*/ -/* Validation function for cards with a valid CIS */ +/** + * readable() - iomem validation function for cards with a valid CIS + */ static int readable(struct pcmcia_socket *s, struct resource *res, unsigned int *count) { - int ret = -1; + int ret = -EINVAL; + + if (s->fake_cis) { + dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n"); + return 0; + } s->cis_mem.res = res; s->cis_virt = ioremap(res->start, s->map_size); if (s->cis_virt) { - ret = pccard_validate_cis(s, count); - /* invalidate mapping and CIS cache */ + mutex_unlock(&s->ops_mutex); + /* as we're only called from pcmcia.c, we're safe */ + if (s->callback->validate) + ret = s->callback->validate(s, count); + /* invalidate mapping */ + mutex_lock(&s->ops_mutex); iounmap(s->cis_virt); s->cis_virt = NULL; - destroy_cis_cache(s); } s->cis_mem.res = NULL; - if ((ret != 0) || (*count == 0)) - return 0; - return 1; + if ((ret) || (*count == 0)) + return -EINVAL; + return 0; } -/* Validation function for simple memory cards */ -static int checksum(struct pcmcia_socket *s, struct resource *res) +/** + * checksum() - iomem validation function for simple memory cards + */ +static int checksum(struct pcmcia_socket *s, struct resource *res, + unsigned int *value) { pccard_mem_map map; int i, a = 0, b = -1, d; @@ -321,61 +330,90 @@ static int checksum(struct pcmcia_socket *s, struct resource *res) iounmap(virt); } - return (b == -1) ? -1 : (a>>1); + if (b == -1) + return -EINVAL; + + *value = a; + + return 0; } -static int -cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) +/** + * do_validate_mem() - low level validate a memory region for PCMCIA use + * @s: PCMCIA socket to validate + * @base: start address of resource to check + * @size: size of resource to check + * @validate: validation function to use + * + * do_validate_mem() splits up the memory region which is to be checked + * into two parts. Both are passed to the @validate() function. If + * @validate() returns non-zero, or the value parameter to @validate() + * is zero, or the value parameter is different between both calls, + * the check fails, and -EINVAL is returned. Else, 0 is returned. + */ +static int do_validate_mem(struct pcmcia_socket *s, + unsigned long base, unsigned long size, + int validate (struct pcmcia_socket *s, + struct resource *res, + unsigned int *value)) { + struct socket_data *s_data = s->resource_data; struct resource *res1, *res2; - unsigned int info1, info2; - int ret = 0; + unsigned int info1 = 1, info2 = 1; + int ret = -EINVAL; res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); if (res1 && res2) { - ret = readable(s, res1, &info1); - ret += readable(s, res2, &info2); + ret = 0; + if (validate) { + ret = validate(s, res1, &info1); + ret += validate(s, res2, &info2); + } } free_region(res2); free_region(res1); - return (ret == 2) && (info1 == info2); -} + dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %p %p %u %u %u", + base, base+size-1, res1, res2, ret, info1, info2); -static int -checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) -{ - struct resource *res1, *res2; - int a = -1, b = -1; - - res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); - res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, - "PCMCIA memprobe"); + if ((ret) || (info1 != info2) || (info1 == 0)) + return -EINVAL; - if (res1 && res2) { - a = checksum(s, res1); - b = checksum(s, res2); + if (validate && !s->fake_cis) { + /* move it to the validated data set */ + add_interval(&s_data->mem_db_valid, base, size); + sub_interval(&s_data->mem_db, base, size); } - free_region(res2); - free_region(res1); - - return (a == b) && (a >= 0); + return 0; } -/*====================================================================== - - The memory probe. If the memory list includes a 64K-aligned block - below 1MB, we probe in 64K chunks, and as soon as we accumulate at - least mem_limit free space, we quit. - -======================================================================*/ -static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) +/** + * do_mem_probe() - validate a memory region for PCMCIA use + * @s: PCMCIA socket to validate + * @base: start address of resource to check + * @num: size of resource to check + * @validate: validation function to use + * @fallback: validation function to use if validate fails + * + * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. + * To do so, the area is split up into sensible parts, and then passed + * into the @validate() function. Only if @validate() and @fallback() fail, + * the area is marked as unavaibale for use by the PCMCIA subsystem. The + * function returns the size of the usable memory area. + */ +static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, + int validate (struct pcmcia_socket *s, + struct resource *res, + unsigned int *value), + int fallback (struct pcmcia_socket *s, + struct resource *res, + unsigned int *value)) { struct socket_data *s_data = s->resource_data; u_long i, j, bad, fail, step; @@ -393,15 +431,14 @@ static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) for (i = j = base; i < base+num; i = j + step) { if (!fail) { for (j = i; j < base+num; j += step) { - if (cis_readable(s, j, step)) + if (!do_validate_mem(s, j, step, validate)) break; } fail = ((i == base) && (j == base+num)); } - if (fail) { - for (j = i; j < base+num; j += 2*step) - if (checksum_match(s, j, step) && - checksum_match(s, j + step, step)) + if ((fail) && (fallback)) { + for (j = i; j < base+num; j += step) + if (!do_validate_mem(s, j, step, fallback)) break; } if (i != j) { @@ -416,8 +453,14 @@ static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) return num - bad; } + #ifdef CONFIG_PCMCIA_PROBE +/** + * inv_probe() - top-to-bottom search for one usuable high memory area + * @s: PCMCIA socket to validate + * @m: resource_map to check + */ static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) { struct socket_data *s_data = s->resource_data; @@ -432,9 +475,18 @@ static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) } if (m->base < 0x100000) return 0; - return do_mem_probe(m->base, m->num, s); + return do_mem_probe(s, m->base, m->num, readable, checksum); } +/** + * validate_mem() - memory probe function + * @s: PCMCIA socket to validate + * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH + * + * The memory probe. If the memory list includes a 64K-aligned block + * below 1MB, we probe in 64K chunks, and as soon as we accumulate at + * least mem_limit free space, we quit. Returns 0 on usuable ports. + */ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) { struct resource_map *m, mm; @@ -446,6 +498,8 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) if (probe_mask & MEM_PROBE_HIGH) { if (inv_probe(s_data->mem_db.next, s) > 0) return 0; + if (s_data->mem_db_valid.next != &s_data->mem_db_valid) + return 0; dev_printk(KERN_NOTICE, &s->dev, "cs: warning: no high memory space available!\n"); return -ENODEV; @@ -457,7 +511,8 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) if (mm.base >= 0x100000) continue; if ((mm.base | mm.num) & 0xffff) { - ok += do_mem_probe(mm.base, mm.num, s); + ok += do_mem_probe(s, mm.base, mm.num, readable, + checksum); continue; } /* Special probe for 64K-aligned block */ @@ -467,7 +522,8 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) if (ok >= mem_limit) sub_interval(&s_data->mem_db, b, 0x10000); else - ok += do_mem_probe(b, 0x10000, s); + ok += do_mem_probe(s, b, 0x10000, + readable, checksum); } } } @@ -480,6 +536,13 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) #else /* CONFIG_PCMCIA_PROBE */ +/** + * validate_mem() - memory probe function + * @s: PCMCIA socket to validate + * @probe_mask: ignored + * + * Returns 0 on usuable ports. + */ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) { struct resource_map *m, mm; @@ -488,7 +551,7 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { mm = *m; - ok += do_mem_probe(mm.base, mm.num, s); + ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); } if (ok > 0) return 0; @@ -498,31 +561,31 @@ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) #endif /* CONFIG_PCMCIA_PROBE */ -/* +/** + * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use + * @s: PCMCIA socket to validate + * + * This is tricky... when we set up CIS memory, we try to validate + * the memory window space allocations. + * * Locking note: Must be called with skt_mutex held! */ static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) { struct socket_data *s_data = s->resource_data; unsigned int probe_mask = MEM_PROBE_LOW; - int ret = 0; + int ret; - if (!probe_mem) + if (!probe_mem || !(s->state & SOCKET_PRESENT)) return 0; - mutex_lock(&rsrc_mutex); - if (s->features & SS_CAP_PAGE_REGS) probe_mask = MEM_PROBE_HIGH; - if (probe_mask & ~s_data->rsrc_mem_probe) { - if (s->state & SOCKET_PRESENT) - ret = validate_mem(s, probe_mask); - if (!ret) - s_data->rsrc_mem_probe |= probe_mask; - } + ret = validate_mem(s, probe_mask); - mutex_unlock(&rsrc_mutex); + if (s_data->mem_db_valid.next != &s_data->mem_db_valid) + return 0; return ret; } @@ -602,7 +665,6 @@ static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_star struct socket_data *s_data = s->resource_data; int ret = -ENOMEM; - mutex_lock(&rsrc_mutex); for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { unsigned long start = m->base; unsigned long end = m->base + m->num - 1; @@ -613,7 +675,6 @@ static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_star ret = adjust_resource(res, r_start, r_end - r_start + 1); break; } - mutex_unlock(&rsrc_mutex); return ret; } @@ -647,7 +708,6 @@ static struct resource *nonstatic_find_io_region(unsigned long base, int num, data.offset = base & data.mask; data.map = &s_data->io_db; - mutex_lock(&rsrc_mutex); #ifdef CONFIG_PCI if (s->cb_dev) { ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, @@ -656,7 +716,6 @@ static struct resource *nonstatic_find_io_region(unsigned long base, int num, #endif ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, 1, pcmcia_align, &data); - mutex_unlock(&rsrc_mutex); if (ret != 0) { kfree(res); @@ -672,15 +731,15 @@ static struct resource *nonstatic_find_mem_region(u_long base, u_long num, struct socket_data *s_data = s->resource_data; struct pcmcia_align_data data; unsigned long min, max; - int ret, i; + int ret, i, j; low = low || !(s->features & SS_CAP_PAGE_REGS); data.mask = align - 1; data.offset = base & data.mask; - data.map = &s_data->mem_db; for (i = 0; i < 2; i++) { + data.map = &s_data->mem_db_valid; if (low) { max = 0x100000UL; min = base < max ? base : 0; @@ -689,17 +748,23 @@ static struct resource *nonstatic_find_mem_region(u_long base, u_long num, min = 0x100000UL + base; } - mutex_lock(&rsrc_mutex); + for (j = 0; j < 2; j++) { #ifdef CONFIG_PCI - if (s->cb_dev) { - ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, - 1, min, 0, - pcmcia_align, &data); - } else + if (s->cb_dev) { + ret = pci_bus_alloc_resource(s->cb_dev->bus, + res, num, 1, min, 0, + pcmcia_align, &data); + } else #endif - ret = allocate_resource(&iomem_resource, res, num, min, - max, 1, pcmcia_align, &data); - mutex_unlock(&rsrc_mutex); + { + ret = allocate_resource(&iomem_resource, + res, num, min, max, 1, + pcmcia_align, &data); + } + if (ret == 0) + break; + data.map = &s_data->mem_db; + } if (ret == 0 || low) break; low = 1; @@ -722,25 +787,18 @@ static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned if (end < start) return -EINVAL; - mutex_lock(&rsrc_mutex); switch (action) { case ADD_MANAGED_RESOURCE: ret = add_interval(&data->mem_db, start, size); + if (!ret) + do_mem_probe(s, start, size, NULL, NULL); break; case REMOVE_MANAGED_RESOURCE: ret = sub_interval(&data->mem_db, start, size); - if (!ret) { - struct pcmcia_socket *socket; - down_read(&pcmcia_socket_list_rwsem); - list_for_each_entry(socket, &pcmcia_socket_list, socket_list) - release_cis_mem(socket); - up_read(&pcmcia_socket_list_rwsem); - } break; default: ret = -EINVAL; } - mutex_unlock(&rsrc_mutex); return ret; } @@ -758,7 +816,6 @@ static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long if (end > IO_SPACE_LIMIT) return -EINVAL; - mutex_lock(&rsrc_mutex); switch (action) { case ADD_MANAGED_RESOURCE: if (add_interval(&data->io_db, start, size) != 0) { @@ -777,7 +834,6 @@ static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long ret = -EINVAL; break; } - mutex_unlock(&rsrc_mutex); return ret; } @@ -860,6 +916,7 @@ static int nonstatic_init(struct pcmcia_socket *s) return -ENOMEM; data->mem_db.next = &data->mem_db; + data->mem_db_valid.next = &data->mem_db_valid; data->io_db.next = &data->io_db; s->resource_data = (void *) data; @@ -874,7 +931,10 @@ static void nonstatic_release_resource_db(struct pcmcia_socket *s) struct socket_data *data = s->resource_data; struct resource_map *p, *q; - mutex_lock(&rsrc_mutex); + for (p = data->mem_db_valid.next; p != &data->mem_db_valid; p = q) { + q = p->next; + kfree(p); + } for (p = data->mem_db.next; p != &data->mem_db; p = q) { q = p->next; kfree(p); @@ -883,7 +943,6 @@ static void nonstatic_release_resource_db(struct pcmcia_socket *s) q = p->next; kfree(p); } - mutex_unlock(&rsrc_mutex); } @@ -910,7 +969,7 @@ static ssize_t show_io_db(struct device *dev, struct resource_map *p; ssize_t ret = 0; - mutex_lock(&rsrc_mutex); + mutex_lock(&s->ops_mutex); data = s->resource_data; for (p = data->io_db.next; p != &data->io_db; p = p->next) { @@ -922,7 +981,7 @@ static ssize_t show_io_db(struct device *dev, ((unsigned long) p->base + p->num - 1)); } - mutex_unlock(&rsrc_mutex); + mutex_unlock(&s->ops_mutex); return ret; } @@ -950,9 +1009,11 @@ static ssize_t store_io_db(struct device *dev, if (end_addr < start_addr) return -EINVAL; + mutex_lock(&s->ops_mutex); ret = adjust_io(s, add, start_addr, end_addr); if (!ret) s->resource_setup_new = 1; + mutex_unlock(&s->ops_mutex); return ret ? ret : count; } @@ -966,9 +1027,19 @@ static ssize_t show_mem_db(struct device *dev, struct resource_map *p; ssize_t ret = 0; - mutex_lock(&rsrc_mutex); + mutex_lock(&s->ops_mutex); data = s->resource_data; + for (p = data->mem_db_valid.next; p != &data->mem_db_valid; + p = p->next) { + if (ret > (PAGE_SIZE - 10)) + continue; + ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), + "0x%08lx - 0x%08lx\n", + ((unsigned long) p->base), + ((unsigned long) p->base + p->num - 1)); + } + for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; @@ -978,7 +1049,7 @@ static ssize_t show_mem_db(struct device *dev, ((unsigned long) p->base + p->num - 1)); } - mutex_unlock(&rsrc_mutex); + mutex_unlock(&s->ops_mutex); return ret; } @@ -1006,9 +1077,11 @@ static ssize_t store_mem_db(struct device *dev, if (end_addr < start_addr) return -EINVAL; + mutex_lock(&s->ops_mutex); ret = adjust_memory(s, add, start_addr, end_addr); if (!ret) s->resource_setup_new = 1; + mutex_unlock(&s->ops_mutex); return ret ? ret : count; } diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c index 7a456000332a..08278016e58d 100644 --- a/drivers/pcmcia/socket_sysfs.c +++ b/drivers/pcmcia/socket_sysfs.c @@ -88,15 +88,14 @@ static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL); static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - ssize_t ret; struct pcmcia_socket *s = to_socket(dev); if (!count) return -EINVAL; - ret = pcmcia_insert_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); - return ret ? ret : count; + return count; } static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); @@ -113,18 +112,22 @@ static ssize_t pccard_store_card_pm_state(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - ssize_t ret = -EINVAL; struct pcmcia_socket *s = to_socket(dev); + ssize_t ret = count; if (!count) return -EINVAL; - if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3)) - ret = pcmcia_suspend_card(s); - else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2)) - ret = pcmcia_resume_card(s); + if (!strncmp(buf, "off", 3)) + pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); + else { + if (!strncmp(buf, "on", 2)) + pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); + else + ret = -EINVAL; + } - return ret ? -ENODEV : count; + return ret; } static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); @@ -132,15 +135,14 @@ static ssize_t pccard_store_eject(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - ssize_t ret; struct pcmcia_socket *s = to_socket(dev); if (!count) return -EINVAL; - ret = pcmcia_eject_card(s); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); - return ret ? ret : count; + return count; } static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); @@ -167,7 +169,9 @@ static ssize_t pccard_store_irq_mask(struct device *dev, ret = sscanf(buf, "0x%x\n", &mask); if (ret == 1) { + mutex_lock(&s->ops_mutex); s->irq_mask &= mask; + mutex_unlock(&s->ops_mutex); ret = 0; } @@ -187,163 +191,21 @@ static ssize_t pccard_store_resource(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned long flags; struct pcmcia_socket *s = to_socket(dev); if (!count) return -EINVAL; - spin_lock_irqsave(&s->lock, flags); + mutex_lock(&s->ops_mutex); if (!s->resource_setup_done) s->resource_setup_done = 1; - spin_unlock_irqrestore(&s->lock, flags); - - mutex_lock(&s->skt_mutex); - if ((s->callback) && - (s->state & SOCKET_PRESENT) && - !(s->state & SOCKET_CARDBUS)) { - if (try_module_get(s->callback->owner)) { - s->callback->requery(s, 0); - module_put(s->callback->owner); - } - } - mutex_unlock(&s->skt_mutex); - - return count; -} -static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); + mutex_unlock(&s->ops_mutex); - -static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count) -{ - tuple_t tuple; - int status, i; - loff_t pointer = 0; - ssize_t ret = 0; - u_char *tuplebuffer; - u_char *tempbuffer; - - tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); - if (!tuplebuffer) - return -ENOMEM; - - tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); - if (!tempbuffer) { - ret = -ENOMEM; - goto free_tuple; - } - - memset(&tuple, 0, sizeof(tuple_t)); - - tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON; - tuple.DesiredTuple = RETURN_FIRST_TUPLE; - tuple.TupleOffset = 0; - - status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple); - while (!status) { - tuple.TupleData = tuplebuffer; - tuple.TupleDataMax = 255; - memset(tuplebuffer, 0, sizeof(u_char) * 255); - - status = pccard_get_tuple_data(s, &tuple); - if (status) - break; - - if (off < (pointer + 2 + tuple.TupleDataLen)) { - tempbuffer[0] = tuple.TupleCode & 0xff; - tempbuffer[1] = tuple.TupleLink & 0xff; - for (i = 0; i < tuple.TupleDataLen; i++) - tempbuffer[i + 2] = tuplebuffer[i] & 0xff; - - for (i = 0; i < (2 + tuple.TupleDataLen); i++) { - if (((i + pointer) >= off) && - (i + pointer) < (off + count)) { - buf[ret] = tempbuffer[i]; - ret++; - } - } - } - - pointer += 2 + tuple.TupleDataLen; - - if (pointer >= (off + count)) - break; - - if (tuple.TupleCode == CISTPL_END) - break; - status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple); - } - - kfree(tempbuffer); - free_tuple: - kfree(tuplebuffer); - - return ret; -} - -static ssize_t pccard_show_cis(struct kobject *kobj, - struct bin_attribute *bin_attr, - char *buf, loff_t off, size_t count) -{ - unsigned int size = 0x200; - - if (off >= size) - count = 0; - else { - struct pcmcia_socket *s; - unsigned int chains; - - if (off + count > size) - count = size - off; - - s = to_socket(container_of(kobj, struct device, kobj)); - - if (!(s->state & SOCKET_PRESENT)) - return -ENODEV; - if (pccard_validate_cis(s, &chains)) - return -EIO; - if (!chains) - return -ENODATA; - - count = pccard_extract_cis(s, buf, off, count); - } - - return count; -} - -static ssize_t pccard_store_cis(struct kobject *kobj, - struct bin_attribute *bin_attr, - char *buf, loff_t off, size_t count) -{ - struct pcmcia_socket *s = to_socket(container_of(kobj, struct device, kobj)); - int error; - - if (off) - return -EINVAL; - - if (count >= CISTPL_MAX_CIS_SIZE) - return -EINVAL; - - if (!(s->state & SOCKET_PRESENT)) - return -ENODEV; - - error = pcmcia_replace_cis(s, buf, count); - if (error) - return -EIO; - - mutex_lock(&s->skt_mutex); - if ((s->callback) && (s->state & SOCKET_PRESENT) && - !(s->state & SOCKET_CARDBUS)) { - if (try_module_get(s->callback->owner)) { - s->callback->requery(s, 1); - module_put(s->callback->owner); - } - } - mutex_unlock(&s->skt_mutex); + pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); return count; } - +static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); static struct attribute *pccard_socket_attributes[] = { &dev_attr_card_type.attr, @@ -362,28 +224,12 @@ static const struct attribute_group socket_attrs = { .attrs = pccard_socket_attributes, }; -static struct bin_attribute pccard_cis_attr = { - .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR }, - .size = 0x200, - .read = pccard_show_cis, - .write = pccard_store_cis, -}; - int pccard_sysfs_add_socket(struct device *dev) { - int ret = 0; - - ret = sysfs_create_group(&dev->kobj, &socket_attrs); - if (!ret) { - ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); - if (ret) - sysfs_remove_group(&dev->kobj, &socket_attrs); - } - return ret; + return sysfs_create_group(&dev->kobj, &socket_attrs); } void pccard_sysfs_remove_socket(struct device *dev) { - sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); sysfs_remove_group(&dev->kobj, &socket_attrs); } diff --git a/drivers/pcmcia/xxs1500_ss.c b/drivers/pcmcia/xxs1500_ss.c new file mode 100644 index 000000000000..61560cd6e287 --- /dev/null +++ b/drivers/pcmcia/xxs1500_ss.c @@ -0,0 +1,350 @@ +/* + * PCMCIA socket code for the MyCable XXS1500 system. + * + * Copyright (c) 2009 Manuel Lauss <manuel.lauss@gmail.com> + * + */ + +#include <linux/delay.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/mm.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/resource.h> +#include <linux/spinlock.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/ss.h> +#include <pcmcia/cistpl.h> + +#include <asm/irq.h> +#include <asm/system.h> +#include <asm/mach-au1x00/au1000.h> + +#define MEM_MAP_SIZE 0x400000 +#define IO_MAP_SIZE 0x1000 + + +/* + * 3.3V cards only; all interfacing is done via gpios: + * + * 0/1: carddetect (00 = card present, xx = huh) + * 4: card irq + * 204: reset (high-act) + * 205: buffer enable (low-act) + * 208/209: card voltage key (00,01,10,11) + * 210: battwarn + * 211: batdead + * 214: power (low-act) + */ +#define GPIO_CDA 0 +#define GPIO_CDB 1 +#define GPIO_CARDIRQ 4 +#define GPIO_RESET 204 +#define GPIO_OUTEN 205 +#define GPIO_VSL 208 +#define GPIO_VSH 209 +#define GPIO_BATTDEAD 210 +#define GPIO_BATTWARN 211 +#define GPIO_POWER 214 + +struct xxs1500_pcmcia_sock { + struct pcmcia_socket socket; + void *virt_io; + + phys_addr_t phys_io; + phys_addr_t phys_attr; + phys_addr_t phys_mem; + + /* previous flags for set_socket() */ + unsigned int old_flags; +}; + +#define to_xxs_socket(x) container_of(x, struct xxs1500_pcmcia_sock, socket) + +static irqreturn_t cdirq(int irq, void *data) +{ + struct xxs1500_pcmcia_sock *sock = data; + + pcmcia_parse_events(&sock->socket, SS_DETECT); + + return IRQ_HANDLED; +} + +static int xxs1500_pcmcia_configure(struct pcmcia_socket *skt, + struct socket_state_t *state) +{ + struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt); + unsigned int changed; + + /* power control */ + switch (state->Vcc) { + case 0: + gpio_set_value(GPIO_POWER, 1); /* power off */ + break; + case 33: + gpio_set_value(GPIO_POWER, 0); /* power on */ + break; + case 50: + default: + return -EINVAL; + } + + changed = state->flags ^ sock->old_flags; + + if (changed & SS_RESET) { + if (state->flags & SS_RESET) { + gpio_set_value(GPIO_RESET, 1); /* assert reset */ + gpio_set_value(GPIO_OUTEN, 1); /* buffers off */ + } else { + gpio_set_value(GPIO_RESET, 0); /* deassert reset */ + gpio_set_value(GPIO_OUTEN, 0); /* buffers on */ + msleep(500); + } + } + + sock->old_flags = state->flags; + + return 0; +} + +static int xxs1500_pcmcia_get_status(struct pcmcia_socket *skt, + unsigned int *value) +{ + unsigned int status; + int i; + + status = 0; + + /* check carddetects: GPIO[0:1] must both be low */ + if (!gpio_get_value(GPIO_CDA) && !gpio_get_value(GPIO_CDB)) + status |= SS_DETECT; + + /* determine card voltage: GPIO[208:209] binary value */ + i = (!!gpio_get_value(GPIO_VSL)) | ((!!gpio_get_value(GPIO_VSH)) << 1); + + switch (i) { + case 0: + case 1: + case 2: + status |= SS_3VCARD; /* 3V card */ + break; + case 3: /* 5V card, unsupported */ + default: + status |= SS_XVCARD; /* treated as unsupported in core */ + } + + /* GPIO214: low active power switch */ + status |= gpio_get_value(GPIO_POWER) ? 0 : SS_POWERON; + + /* GPIO204: high-active reset line */ + status |= gpio_get_value(GPIO_RESET) ? SS_RESET : SS_READY; + + /* other stuff */ + status |= gpio_get_value(GPIO_BATTDEAD) ? 0 : SS_BATDEAD; + status |= gpio_get_value(GPIO_BATTWARN) ? 0 : SS_BATWARN; + + *value = status; + + return 0; +} + +static int xxs1500_pcmcia_sock_init(struct pcmcia_socket *skt) +{ + gpio_direction_input(GPIO_CDA); + gpio_direction_input(GPIO_CDB); + gpio_direction_input(GPIO_VSL); + gpio_direction_input(GPIO_VSH); + gpio_direction_input(GPIO_BATTDEAD); + gpio_direction_input(GPIO_BATTWARN); + gpio_direction_output(GPIO_RESET, 1); /* assert reset */ + gpio_direction_output(GPIO_OUTEN, 1); /* disable buffers */ + gpio_direction_output(GPIO_POWER, 1); /* power off */ + + return 0; +} + +static int xxs1500_pcmcia_sock_suspend(struct pcmcia_socket *skt) +{ + return 0; +} + +static int au1x00_pcmcia_set_io_map(struct pcmcia_socket *skt, + struct pccard_io_map *map) +{ + struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt); + + map->start = (u32)sock->virt_io; + map->stop = map->start + IO_MAP_SIZE; + + return 0; +} + +static int au1x00_pcmcia_set_mem_map(struct pcmcia_socket *skt, + struct pccard_mem_map *map) +{ + struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt); + + if (map->flags & MAP_ATTRIB) + map->static_start = sock->phys_attr + map->card_start; + else + map->static_start = sock->phys_mem + map->card_start; + + return 0; +} + +static struct pccard_operations xxs1500_pcmcia_operations = { + .init = xxs1500_pcmcia_sock_init, + .suspend = xxs1500_pcmcia_sock_suspend, + .get_status = xxs1500_pcmcia_get_status, + .set_socket = xxs1500_pcmcia_configure, + .set_io_map = au1x00_pcmcia_set_io_map, + .set_mem_map = au1x00_pcmcia_set_mem_map, +}; + +static int __devinit xxs1500_pcmcia_probe(struct platform_device *pdev) +{ + struct xxs1500_pcmcia_sock *sock; + struct resource *r; + int ret, irq; + + sock = kzalloc(sizeof(struct xxs1500_pcmcia_sock), GFP_KERNEL); + if (!sock) + return -ENOMEM; + + ret = -ENODEV; + + /* + * pseudo-attr: The 32bit address of the PCMCIA attribute space + * for this socket (usually the 36bit address shifted 4 to the + * right). + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-attr"); + if (!r) { + dev_err(&pdev->dev, "missing 'pcmcia-attr' resource!\n"); + goto out0; + } + sock->phys_attr = r->start; + + /* + * pseudo-mem: The 32bit address of the PCMCIA memory space for + * this socket (usually the 36bit address shifted 4 to the right) + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-mem"); + if (!r) { + dev_err(&pdev->dev, "missing 'pcmcia-mem' resource!\n"); + goto out0; + } + sock->phys_mem = r->start; + + /* + * pseudo-io: The 32bit address of the PCMCIA IO space for this + * socket (usually the 36bit address shifted 4 to the right). + */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-io"); + if (!r) { + dev_err(&pdev->dev, "missing 'pcmcia-io' resource!\n"); + goto out0; + } + sock->phys_io = r->start; + + + /* + * PCMCIA client drivers use the inb/outb macros to access + * the IO registers. Since mips_io_port_base is added + * to the access address of the mips implementation of + * inb/outb, we need to subtract it here because we want + * to access the I/O or MEM address directly, without + * going through this "mips_io_port_base" mechanism. + */ + sock->virt_io = (void *)(ioremap(sock->phys_io, IO_MAP_SIZE) - + mips_io_port_base); + + if (!sock->virt_io) { + dev_err(&pdev->dev, "cannot remap IO area\n"); + ret = -ENOMEM; + goto out0; + } + + sock->socket.ops = &xxs1500_pcmcia_operations; + sock->socket.owner = THIS_MODULE; + sock->socket.pci_irq = gpio_to_irq(GPIO_CARDIRQ); + sock->socket.features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD; + sock->socket.map_size = MEM_MAP_SIZE; + sock->socket.io_offset = (unsigned long)sock->virt_io; + sock->socket.dev.parent = &pdev->dev; + sock->socket.resource_ops = &pccard_static_ops; + + platform_set_drvdata(pdev, sock); + + /* setup carddetect irq: use one of the 2 GPIOs as an + * edge detector. + */ + irq = gpio_to_irq(GPIO_CDA); + set_irq_type(irq, IRQ_TYPE_EDGE_BOTH); + ret = request_irq(irq, cdirq, 0, "pcmcia_carddetect", sock); + if (ret) { + dev_err(&pdev->dev, "cannot setup cd irq\n"); + goto out1; + } + + ret = pcmcia_register_socket(&sock->socket); + if (ret) { + dev_err(&pdev->dev, "failed to register\n"); + goto out2; + } + + printk(KERN_INFO "MyCable XXS1500 PCMCIA socket services\n"); + + return 0; + +out2: + free_irq(gpio_to_irq(GPIO_CDA), sock); +out1: + iounmap((void *)(sock->virt_io + (u32)mips_io_port_base)); +out0: + kfree(sock); + return ret; +} + +static int __devexit xxs1500_pcmcia_remove(struct platform_device *pdev) +{ + struct xxs1500_pcmcia_sock *sock = platform_get_drvdata(pdev); + + pcmcia_unregister_socket(&sock->socket); + free_irq(gpio_to_irq(GPIO_CDA), sock); + iounmap((void *)(sock->virt_io + (u32)mips_io_port_base)); + kfree(sock); + + return 0; +} + +static struct platform_driver xxs1500_pcmcia_socket_driver = { + .driver = { + .name = "xxs1500_pcmcia", + .owner = THIS_MODULE, + }, + .probe = xxs1500_pcmcia_probe, + .remove = __devexit_p(xxs1500_pcmcia_remove), +}; + +int __init xxs1500_pcmcia_socket_load(void) +{ + return platform_driver_register(&xxs1500_pcmcia_socket_driver); +} + +void __exit xxs1500_pcmcia_socket_unload(void) +{ + platform_driver_unregister(&xxs1500_pcmcia_socket_driver); +} + +module_init(xxs1500_pcmcia_socket_load); +module_exit(xxs1500_pcmcia_socket_unload); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("PCMCIA Socket Services for MyCable XXS1500 systems"); +MODULE_AUTHOR("Manuel Lauss"); diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index 1f2039d5e966..b85375f87622 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -37,6 +37,11 @@ static int pwr_irqs_off; module_param(pwr_irqs_off, bool, 0644); MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!"); +static char o2_speedup[] = "default"; +module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444); +MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' " + "or 'default' (uses recommended behaviour for the detected bridge)"); + #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args) /* Don't ask.. */ diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c index e82d8c9c6cda..95a689befc84 100644 --- a/drivers/ps3/ps3av.c +++ b/drivers/ps3/ps3av.c @@ -532,7 +532,7 @@ static void ps3av_set_videomode_packet(u32 id) res = ps3av_cmd_avb_param(&avb_param, len); if (res == PS3AV_STATUS_NO_SYNC_HEAD) printk(KERN_WARNING - "%s: Command failed. Please try your request again. \n", + "%s: Command failed. Please try your request again.\n", __func__); else if (res) dev_dbg(&ps3av->dev->core, "ps3av_cmd_avb_param failed\n"); diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 8167e9e6827a..2bb8a8b7ffaf 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -868,4 +868,14 @@ config RTC_DRV_MC13783 help This enables support for the Freescale MC13783 PMIC RTC +config RTC_DRV_MPC5121 + tristate "Freescale MPC5121 built-in RTC" + depends on PPC_MPC512x && RTC_CLASS + help + If you say yes here you will get support for the + built-in RTC MPC5121. + + This driver can also be built as a module. If so, the module + will be called rtc-mpc5121. + endif # RTC_CLASS diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index e5160fddc446..b7148afb8f55 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -55,6 +55,7 @@ obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o +obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c new file mode 100644 index 000000000000..4313ca03a96d --- /dev/null +++ b/drivers/rtc/rtc-mpc5121.c @@ -0,0 +1,387 @@ +/* + * Real-time clock driver for MPC5121 + * + * Copyright 2007, Domen Puncer <domen.puncer@telargo.com> + * Copyright 2008, Freescale Semiconductor, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/of_device.h> +#include <linux/of_platform.h> +#include <linux/io.h> + +struct mpc5121_rtc_regs { + u8 set_time; /* RTC + 0x00 */ + u8 hour_set; /* RTC + 0x01 */ + u8 minute_set; /* RTC + 0x02 */ + u8 second_set; /* RTC + 0x03 */ + + u8 set_date; /* RTC + 0x04 */ + u8 month_set; /* RTC + 0x05 */ + u8 weekday_set; /* RTC + 0x06 */ + u8 date_set; /* RTC + 0x07 */ + + u8 write_sw; /* RTC + 0x08 */ + u8 sw_set; /* RTC + 0x09 */ + u16 year_set; /* RTC + 0x0a */ + + u8 alm_enable; /* RTC + 0x0c */ + u8 alm_hour_set; /* RTC + 0x0d */ + u8 alm_min_set; /* RTC + 0x0e */ + u8 int_enable; /* RTC + 0x0f */ + + u8 reserved1; + u8 hour; /* RTC + 0x11 */ + u8 minute; /* RTC + 0x12 */ + u8 second; /* RTC + 0x13 */ + + u8 month; /* RTC + 0x14 */ + u8 wday_mday; /* RTC + 0x15 */ + u16 year; /* RTC + 0x16 */ + + u8 int_alm; /* RTC + 0x18 */ + u8 int_sw; /* RTC + 0x19 */ + u8 alm_status; /* RTC + 0x1a */ + u8 sw_minute; /* RTC + 0x1b */ + + u8 bus_error_1; /* RTC + 0x1c */ + u8 int_day; /* RTC + 0x1d */ + u8 int_min; /* RTC + 0x1e */ + u8 int_sec; /* RTC + 0x1f */ + + /* + * target_time: + * intended to be used for hibernation but hibernation + * does not work on silicon rev 1.5 so use it for non-volatile + * storage of offset between the actual_time register and linux + * time + */ + u32 target_time; /* RTC + 0x20 */ + /* + * actual_time: + * readonly time since VBAT_RTC was last connected + */ + u32 actual_time; /* RTC + 0x24 */ + u32 keep_alive; /* RTC + 0x28 */ +}; + +struct mpc5121_rtc_data { + unsigned irq; + unsigned irq_periodic; + struct mpc5121_rtc_regs __iomem *regs; + struct rtc_device *rtc; + struct rtc_wkalrm wkalarm; +}; + +/* + * Update second/minute/hour registers. + * + * This is just so alarm will work. + */ +static void mpc5121_rtc_update_smh(struct mpc5121_rtc_regs __iomem *regs, + struct rtc_time *tm) +{ + out_8(®s->second_set, tm->tm_sec); + out_8(®s->minute_set, tm->tm_min); + out_8(®s->hour_set, tm->tm_hour); + + /* set time sequence */ + out_8(®s->set_time, 0x1); + out_8(®s->set_time, 0x3); + out_8(®s->set_time, 0x1); + out_8(®s->set_time, 0x0); +} + +static int mpc5121_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + unsigned long now; + + /* + * linux time is actual_time plus the offset saved in target_time + */ + now = in_be32(®s->actual_time) + in_be32(®s->target_time); + + rtc_time_to_tm(now, tm); + + /* + * update second minute hour registers + * so alarms will work + */ + mpc5121_rtc_update_smh(regs, tm); + + return rtc_valid_tm(tm); +} + +static int mpc5121_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + int ret; + unsigned long now; + + /* + * The actual_time register is read only so we write the offset + * between it and linux time to the target_time register. + */ + ret = rtc_tm_to_time(tm, &now); + if (ret == 0) + out_be32(®s->target_time, now - in_be32(®s->actual_time)); + + /* + * update second minute hour registers + * so alarms will work + */ + mpc5121_rtc_update_smh(regs, tm); + + return 0; +} + +static int mpc5121_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + + *alarm = rtc->wkalarm; + + alarm->pending = in_8(®s->alm_status); + + return 0; +} + +static int mpc5121_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + + /* + * the alarm has no seconds so deal with it + */ + if (alarm->time.tm_sec) { + alarm->time.tm_sec = 0; + alarm->time.tm_min++; + if (alarm->time.tm_min >= 60) { + alarm->time.tm_min = 0; + alarm->time.tm_hour++; + if (alarm->time.tm_hour >= 24) + alarm->time.tm_hour = 0; + } + } + + alarm->time.tm_mday = -1; + alarm->time.tm_mon = -1; + alarm->time.tm_year = -1; + + out_8(®s->alm_min_set, alarm->time.tm_min); + out_8(®s->alm_hour_set, alarm->time.tm_hour); + + out_8(®s->alm_enable, alarm->enabled); + + rtc->wkalarm = *alarm; + return 0; +} + +static irqreturn_t mpc5121_rtc_handler(int irq, void *dev) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata((struct device *)dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + + if (in_8(®s->int_alm)) { + /* acknowledge and clear status */ + out_8(®s->int_alm, 1); + out_8(®s->alm_status, 1); + + rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +static irqreturn_t mpc5121_rtc_handler_upd(int irq, void *dev) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata((struct device *)dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + + if (in_8(®s->int_sec) && (in_8(®s->int_enable) & 0x1)) { + /* acknowledge */ + out_8(®s->int_sec, 1); + + rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_UF); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +static int mpc5121_rtc_alarm_irq_enable(struct device *dev, + unsigned int enabled) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + int val; + + if (enabled) + val = 1; + else + val = 0; + + out_8(®s->alm_enable, val); + rtc->wkalarm.enabled = val; + + return 0; +} + +static int mpc5121_rtc_update_irq_enable(struct device *dev, + unsigned int enabled) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + int val; + + val = in_8(®s->int_enable); + + if (enabled) + val = (val & ~0x8) | 0x1; + else + val &= ~0x1; + + out_8(®s->int_enable, val); + + return 0; +} + +static const struct rtc_class_ops mpc5121_rtc_ops = { + .read_time = mpc5121_rtc_read_time, + .set_time = mpc5121_rtc_set_time, + .read_alarm = mpc5121_rtc_read_alarm, + .set_alarm = mpc5121_rtc_set_alarm, + .alarm_irq_enable = mpc5121_rtc_alarm_irq_enable, + .update_irq_enable = mpc5121_rtc_update_irq_enable, +}; + +static int __devinit mpc5121_rtc_probe(struct of_device *op, + const struct of_device_id *match) +{ + struct mpc5121_rtc_data *rtc; + int err = 0; + u32 ka; + + rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); + if (!rtc) + return -ENOMEM; + + rtc->regs = of_iomap(op->node, 0); + if (!rtc->regs) { + dev_err(&op->dev, "%s: couldn't map io space\n", __func__); + err = -ENOSYS; + goto out_free; + } + + device_init_wakeup(&op->dev, 1); + + dev_set_drvdata(&op->dev, rtc); + + rtc->irq = irq_of_parse_and_map(op->node, 1); + err = request_irq(rtc->irq, mpc5121_rtc_handler, IRQF_DISABLED, + "mpc5121-rtc", &op->dev); + if (err) { + dev_err(&op->dev, "%s: could not request irq: %i\n", + __func__, rtc->irq); + goto out_dispose; + } + + rtc->irq_periodic = irq_of_parse_and_map(op->node, 0); + err = request_irq(rtc->irq_periodic, mpc5121_rtc_handler_upd, + IRQF_DISABLED, "mpc5121-rtc_upd", &op->dev); + if (err) { + dev_err(&op->dev, "%s: could not request irq: %i\n", + __func__, rtc->irq_periodic); + goto out_dispose2; + } + + ka = in_be32(&rtc->regs->keep_alive); + if (ka & 0x02) { + dev_warn(&op->dev, + "mpc5121-rtc: Battery or oscillator failure!\n"); + out_be32(&rtc->regs->keep_alive, ka); + } + + rtc->rtc = rtc_device_register("mpc5121-rtc", &op->dev, + &mpc5121_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc->rtc)) { + err = PTR_ERR(rtc->rtc); + goto out_free_irq; + } + + return 0; + +out_free_irq: + free_irq(rtc->irq_periodic, &op->dev); +out_dispose2: + irq_dispose_mapping(rtc->irq_periodic); + free_irq(rtc->irq, &op->dev); +out_dispose: + irq_dispose_mapping(rtc->irq); + iounmap(rtc->regs); +out_free: + kfree(rtc); + + return err; +} + +static int __devexit mpc5121_rtc_remove(struct of_device *op) +{ + struct mpc5121_rtc_data *rtc = dev_get_drvdata(&op->dev); + struct mpc5121_rtc_regs __iomem *regs = rtc->regs; + + /* disable interrupt, so there are no nasty surprises */ + out_8(®s->alm_enable, 0); + out_8(®s->int_enable, in_8(®s->int_enable) & ~0x1); + + rtc_device_unregister(rtc->rtc); + iounmap(rtc->regs); + free_irq(rtc->irq, &op->dev); + free_irq(rtc->irq_periodic, &op->dev); + irq_dispose_mapping(rtc->irq); + irq_dispose_mapping(rtc->irq_periodic); + dev_set_drvdata(&op->dev, NULL); + kfree(rtc); + + return 0; +} + +static struct of_device_id mpc5121_rtc_match[] __devinitdata = { + { .compatible = "fsl,mpc5121-rtc", }, + {}, +}; + +static struct of_platform_driver mpc5121_rtc_driver = { + .owner = THIS_MODULE, + .name = "mpc5121-rtc", + .match_table = mpc5121_rtc_match, + .probe = mpc5121_rtc_probe, + .remove = __devexit_p(mpc5121_rtc_remove), +}; + +static int __init mpc5121_rtc_init(void) +{ + return of_register_platform_driver(&mpc5121_rtc_driver); +} +module_init(mpc5121_rtc_init); + +static void __exit mpc5121_rtc_exit(void) +{ + of_unregister_platform_driver(&mpc5121_rtc_driver); +} +module_exit(mpc5121_rtc_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("John Rigby <jcrigby@gmail.com>"); diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 5905936c7c60..9ab1ae40565f 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -20,6 +20,7 @@ #include <linux/buffer_head.h> #include <linux/hdreg.h> #include <linux/async.h> +#include <linux/mutex.h> #include <asm/ccwdev.h> #include <asm/ebcdic.h> @@ -112,6 +113,7 @@ struct dasd_device *dasd_alloc_device(void) INIT_WORK(&device->restore_device, do_restore_device); device->state = DASD_STATE_NEW; device->target = DASD_STATE_NEW; + mutex_init(&device->state_mutex); return device; } @@ -321,8 +323,8 @@ static int dasd_state_ready_to_basic(struct dasd_device *device) device->state = DASD_STATE_READY; return rc; } - dasd_destroy_partitions(block); dasd_flush_request_queue(block); + dasd_destroy_partitions(block); block->blocks = 0; block->bp_block = 0; block->s2b_shift = 0; @@ -484,10 +486,8 @@ static void dasd_change_state(struct dasd_device *device) if (rc) device->target = device->state; - if (device->state == device->target) { + if (device->state == device->target) wake_up(&dasd_init_waitq); - dasd_put_device(device); - } /* let user-space know that the device status changed */ kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); @@ -502,7 +502,9 @@ static void dasd_change_state(struct dasd_device *device) static void do_kick_device(struct work_struct *work) { struct dasd_device *device = container_of(work, struct dasd_device, kick_work); + mutex_lock(&device->state_mutex); dasd_change_state(device); + mutex_unlock(&device->state_mutex); dasd_schedule_device_bh(device); dasd_put_device(device); } @@ -539,18 +541,19 @@ void dasd_restore_device(struct dasd_device *device) void dasd_set_target_state(struct dasd_device *device, int target) { dasd_get_device(device); + mutex_lock(&device->state_mutex); /* If we are in probeonly mode stop at DASD_STATE_READY. */ if (dasd_probeonly && target > DASD_STATE_READY) target = DASD_STATE_READY; if (device->target != target) { - if (device->state == target) { + if (device->state == target) wake_up(&dasd_init_waitq); - dasd_put_device(device); - } device->target = target; } if (device->state != device->target) dasd_change_state(device); + mutex_unlock(&device->state_mutex); + dasd_put_device(device); } /* @@ -1000,12 +1003,20 @@ static void dasd_handle_killed_request(struct ccw_device *cdev, return; } - device = (struct dasd_device *) cqr->startdev; - if (device == NULL || - device != dasd_device_from_cdev_locked(cdev) || - strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { + device = dasd_device_from_cdev_locked(cdev); + if (IS_ERR(device)) { + DBF_EVENT_DEVID(DBF_DEBUG, cdev, "%s", + "unable to get device from cdev"); + return; + } + + if (!cqr->startdev || + device != cqr->startdev || + strncmp(cqr->startdev->discipline->ebcname, + (char *) &cqr->magic, 4)) { DBF_EVENT_DEVID(DBF_DEBUG, cdev, "%s", "invalid device in request"); + dasd_put_device(device); return; } @@ -1692,7 +1703,6 @@ int dasd_cancel_req(struct dasd_ccw_req *cqr) cqr, rc); } else { cqr->stopclk = get_clock(); - rc = 1; } break; default: /* already finished or clear pending - do nothing */ @@ -2170,9 +2180,13 @@ static void dasd_flush_request_queue(struct dasd_block *block) static int dasd_open(struct block_device *bdev, fmode_t mode) { struct dasd_block *block = bdev->bd_disk->private_data; - struct dasd_device *base = block->base; + struct dasd_device *base; int rc; + if (!block) + return -ENODEV; + + base = block->base; atomic_inc(&block->open_count); if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) { rc = -ENODEV; @@ -2285,11 +2299,6 @@ static void dasd_generic_auto_online(void *data, async_cookie_t cookie) if (ret) pr_warning("%s: Setting the DASD online failed with rc=%d\n", dev_name(&cdev->dev), ret); - else { - struct dasd_device *device = dasd_device_from_cdev(cdev); - wait_event(dasd_init_waitq, _wait_for_device(device)); - dasd_put_device(device); - } } /* @@ -2424,6 +2433,9 @@ int dasd_generic_set_online(struct ccw_device *cdev, } else pr_debug("dasd_generic device %s found\n", dev_name(&cdev->dev)); + + wait_event(dasd_init_waitq, _wait_for_device(device)); + dasd_put_device(device); return rc; } diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 4cac5b54f26a..d49766f3b940 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -874,12 +874,19 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr, ssize_t len; device = dasd_device_from_cdev(to_ccwdev(dev)); - if (!IS_ERR(device) && device->discipline) { + if (IS_ERR(device)) + goto out; + else if (!device->discipline) { + dasd_put_device(device); + goto out; + } else { len = snprintf(buf, PAGE_SIZE, "%s\n", device->discipline->name); dasd_put_device(device); - } else - len = snprintf(buf, PAGE_SIZE, "none\n"); + return len; + } +out: + len = snprintf(buf, PAGE_SIZE, "none\n"); return len; } diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c index d3198303b93c..94f92a1247f2 100644 --- a/drivers/s390/block/dasd_genhd.c +++ b/drivers/s390/block/dasd_genhd.c @@ -88,6 +88,7 @@ void dasd_gendisk_free(struct dasd_block *block) if (block->gdp) { del_gendisk(block->gdp); block->gdp->queue = NULL; + block->gdp->private_data = NULL; put_disk(block->gdp); block->gdp = NULL; } diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index e4c2143dabf6..ed73ce550822 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -368,6 +368,7 @@ struct dasd_device { /* Device state and target state. */ int state, target; + struct mutex state_mutex; int stopped; /* device (ccw_device_start) was stopped */ /* reference count. */ diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c index 71f95f54866f..f13a0bdd148c 100644 --- a/drivers/s390/block/dasd_proc.c +++ b/drivers/s390/block/dasd_proc.c @@ -165,51 +165,32 @@ static const struct file_operations dasd_devices_file_ops = { .release = seq_release, }; -static int -dasd_calc_metrics(char *page, char **start, off_t off, - int count, int *eof, int len) -{ - len = (len > off) ? len - off : 0; - if (len > count) - len = count; - if (len < count) - *eof = 1; - *start = page + off; - return len; -} - #ifdef CONFIG_DASD_PROFILE -static char * -dasd_statistics_array(char *str, unsigned int *array, int factor) +static void dasd_statistics_array(struct seq_file *m, unsigned int *array, int factor) { int i; for (i = 0; i < 32; i++) { - str += sprintf(str, "%7d ", array[i] / factor); + seq_printf(m, "%7d ", array[i] / factor); if (i == 15) - str += sprintf(str, "\n"); + seq_putc(m, '\n'); } - str += sprintf(str,"\n"); - return str; + seq_putc(m, '\n'); } #endif /* CONFIG_DASD_PROFILE */ -static int -dasd_statistics_read(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int dasd_stats_proc_show(struct seq_file *m, void *v) { - unsigned long len; #ifdef CONFIG_DASD_PROFILE struct dasd_profile_info_t *prof; - char *str; int factor; /* check for active profiling */ if (dasd_profile_level == DASD_PROFILE_OFF) { - len = sprintf(page, "Statistics are off - they might be " + seq_printf(m, "Statistics are off - they might be " "switched on using 'echo set on > " "/proc/dasd/statistics'\n"); - return dasd_calc_metrics(page, start, off, count, eof, len); + return 0; } prof = &dasd_global_profile; @@ -217,47 +198,49 @@ dasd_statistics_read(char *page, char **start, off_t off, for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999; factor *= 10); - str = page; - str += sprintf(str, "%d dasd I/O requests\n", prof->dasd_io_reqs); - str += sprintf(str, "with %u sectors(512B each)\n", + seq_printf(m, "%d dasd I/O requests\n", prof->dasd_io_reqs); + seq_printf(m, "with %u sectors(512B each)\n", prof->dasd_io_sects); - str += sprintf(str, "Scale Factor is %d\n", factor); - str += sprintf(str, + seq_printf(m, "Scale Factor is %d\n", factor); + seq_printf(m, " __<4 ___8 __16 __32 __64 _128 " " _256 _512 __1k __2k __4k __8k " " _16k _32k _64k 128k\n"); - str += sprintf(str, + seq_printf(m, " _256 _512 __1M __2M __4M __8M " " _16M _32M _64M 128M 256M 512M " " __1G __2G __4G " " _>4G\n"); - str += sprintf(str, "Histogram of sizes (512B secs)\n"); - str = dasd_statistics_array(str, prof->dasd_io_secs, factor); - str += sprintf(str, "Histogram of I/O times (microseconds)\n"); - str = dasd_statistics_array(str, prof->dasd_io_times, factor); - str += sprintf(str, "Histogram of I/O times per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_timps, factor); - str += sprintf(str, "Histogram of I/O time till ssch\n"); - str = dasd_statistics_array(str, prof->dasd_io_time1, factor); - str += sprintf(str, "Histogram of I/O time between ssch and irq\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2, factor); - str += sprintf(str, "Histogram of I/O time between ssch " + seq_printf(m, "Histogram of sizes (512B secs)\n"); + dasd_statistics_array(m, prof->dasd_io_secs, factor); + seq_printf(m, "Histogram of I/O times (microseconds)\n"); + dasd_statistics_array(m, prof->dasd_io_times, factor); + seq_printf(m, "Histogram of I/O times per sector\n"); + dasd_statistics_array(m, prof->dasd_io_timps, factor); + seq_printf(m, "Histogram of I/O time till ssch\n"); + dasd_statistics_array(m, prof->dasd_io_time1, factor); + seq_printf(m, "Histogram of I/O time between ssch and irq\n"); + dasd_statistics_array(m, prof->dasd_io_time2, factor); + seq_printf(m, "Histogram of I/O time between ssch " "and irq per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2ps, factor); - str += sprintf(str, "Histogram of I/O time between irq and end\n"); - str = dasd_statistics_array(str, prof->dasd_io_time3, factor); - str += sprintf(str, "# of req in chanq at enqueuing (1..32) \n"); - str = dasd_statistics_array(str, prof->dasd_io_nr_req, factor); - len = str - page; + dasd_statistics_array(m, prof->dasd_io_time2ps, factor); + seq_printf(m, "Histogram of I/O time between irq and end\n"); + dasd_statistics_array(m, prof->dasd_io_time3, factor); + seq_printf(m, "# of req in chanq at enqueuing (1..32) \n"); + dasd_statistics_array(m, prof->dasd_io_nr_req, factor); #else - len = sprintf(page, "Statistics are not activated in this kernel\n"); + seq_printf(m, "Statistics are not activated in this kernel\n"); #endif - return dasd_calc_metrics(page, start, off, count, eof, len); + return 0; } -static int -dasd_statistics_write(struct file *file, const char __user *user_buf, - unsigned long user_len, void *data) +static int dasd_stats_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, dasd_stats_proc_show, NULL); +} + +static ssize_t dasd_stats_proc_write(struct file *file, + const char __user *user_buf, size_t user_len, loff_t *pos) { #ifdef CONFIG_DASD_PROFILE char *buffer, *str; @@ -308,6 +291,15 @@ out_error: #endif /* CONFIG_DASD_PROFILE */ } +static const struct file_operations dasd_stats_proc_fops = { + .owner = THIS_MODULE, + .open = dasd_stats_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = dasd_stats_proc_write, +}; + /* * Create dasd proc-fs entries. * In case creation failed, cleanup and return -ENOENT. @@ -324,13 +316,12 @@ dasd_proc_init(void) &dasd_devices_file_ops); if (!dasd_devices_entry) goto out_nodevices; - dasd_statistics_entry = create_proc_entry("statistics", - S_IFREG | S_IRUGO | S_IWUSR, - dasd_proc_root_entry); + dasd_statistics_entry = proc_create("statistics", + S_IFREG | S_IRUGO | S_IWUSR, + dasd_proc_root_entry, + &dasd_stats_proc_fops); if (!dasd_statistics_entry) goto out_nostatistics; - dasd_statistics_entry->read_proc = dasd_statistics_read; - dasd_statistics_entry->write_proc = dasd_statistics_write; return 0; out_nostatistics: diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 82daa3c1dc9c..3438658b66b7 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/miscdevice.h> #include <linux/debugfs.h> +#include <asm/asm-offsets.h> #include <asm/ipl.h> #include <asm/sclp.h> #include <asm/setup.h> @@ -40,12 +41,12 @@ enum arch_id { /* dump system info */ struct sys_info { - enum arch_id arch; - unsigned long sa_base; - u32 sa_size; - int cpu_map[NR_CPUS]; - unsigned long mem_size; - union save_area lc_mask; + enum arch_id arch; + unsigned long sa_base; + u32 sa_size; + int cpu_map[NR_CPUS]; + unsigned long mem_size; + struct save_area lc_mask; }; struct ipib_info { @@ -183,52 +184,9 @@ static int memcpy_real_user(void __user *dest, unsigned long src, size_t count) return 0; } -#ifdef __s390x__ -/* - * Convert s390x (64 bit) cpu info to s390 (32 bit) cpu info - */ -static void __init s390x_to_s390_regs(union save_area *out, union save_area *in, - int cpu) -{ - int i; - - for (i = 0; i < 16; i++) { - out->s390.gp_regs[i] = in->s390x.gp_regs[i] & 0x00000000ffffffff; - out->s390.acc_regs[i] = in->s390x.acc_regs[i]; - out->s390.ctrl_regs[i] = - in->s390x.ctrl_regs[i] & 0x00000000ffffffff; - } - /* locore for 31 bit has only space for fpregs 0,2,4,6 */ - out->s390.fp_regs[0] = in->s390x.fp_regs[0]; - out->s390.fp_regs[1] = in->s390x.fp_regs[2]; - out->s390.fp_regs[2] = in->s390x.fp_regs[4]; - out->s390.fp_regs[3] = in->s390x.fp_regs[6]; - memcpy(&(out->s390.psw[0]), &(in->s390x.psw[0]), 4); - out->s390.psw[1] |= 0x8; /* set bit 12 */ - memcpy(&(out->s390.psw[4]),&(in->s390x.psw[12]), 4); - out->s390.psw[4] |= 0x80; /* set (31bit) addressing bit */ - out->s390.pref_reg = in->s390x.pref_reg; - out->s390.timer = in->s390x.timer; - out->s390.clk_cmp = in->s390x.clk_cmp; -} - -static void __init s390x_to_s390_save_areas(void) -{ - int i = 1; - static union save_area tmp; - - while (zfcpdump_save_areas[i]) { - s390x_to_s390_regs(&tmp, zfcpdump_save_areas[i], i); - memcpy(zfcpdump_save_areas[i], &tmp, sizeof(tmp)); - i++; - } -} - -#endif /* __s390x__ */ - static int __init init_cpu_info(enum arch_id arch) { - union save_area *sa; + struct save_area *sa; /* get info for boot cpu from lowcore, stored in the HSA */ @@ -241,20 +199,12 @@ static int __init init_cpu_info(enum arch_id arch) return -EIO; } zfcpdump_save_areas[0] = sa; - -#ifdef __s390x__ - /* convert s390x regs to s390, if we are dumping an s390 Linux */ - - if (arch == ARCH_S390) - s390x_to_s390_save_areas(); -#endif - return 0; } static DEFINE_MUTEX(zcore_mutex); -#define DUMP_VERSION 0x3 +#define DUMP_VERSION 0x5 #define DUMP_MAGIC 0xa8190173618f23fdULL #define DUMP_ARCH_S390X 2 #define DUMP_ARCH_S390 1 @@ -279,7 +229,14 @@ struct zcore_header { u32 volnr; u32 build_arch; u64 rmem_size; - char pad2[4016]; + u8 mvdump; + u16 cpu_cnt; + u16 real_cpu_cnt; + u8 end_pad1[0x200-0x061]; + u64 mvdump_sign; + u64 mvdump_zipl_time; + u8 end_pad2[0x800-0x210]; + u32 lc_vec[512]; } __attribute__((packed,__aligned__(16))); static struct zcore_header zcore_header = { @@ -289,7 +246,7 @@ static struct zcore_header zcore_header = { .dump_level = 0, .page_size = PAGE_SIZE, .mem_start = 0, -#ifdef __s390x__ +#ifdef CONFIG_64BIT .build_arch = DUMP_ARCH_S390X, #else .build_arch = DUMP_ARCH_S390, @@ -340,11 +297,7 @@ static int zcore_add_lc(char __user *buf, unsigned long start, size_t count) unsigned long prefix; unsigned long sa_off, len, buf_off; - if (sys_info.arch == ARCH_S390) - prefix = zfcpdump_save_areas[i]->s390.pref_reg; - else - prefix = zfcpdump_save_areas[i]->s390x.pref_reg; - + prefix = zfcpdump_save_areas[i]->pref_reg; sa_start = prefix + sys_info.sa_base; sa_end = prefix + sys_info.sa_base + sys_info.sa_size; @@ -561,34 +514,39 @@ static const struct file_operations zcore_reipl_fops = { .release = zcore_reipl_release, }; +#ifdef CONFIG_32BIT -static void __init set_s390_lc_mask(union save_area *map) +static void __init set_lc_mask(struct save_area *map) { - memset(&map->s390.ext_save, 0xff, sizeof(map->s390.ext_save)); - memset(&map->s390.timer, 0xff, sizeof(map->s390.timer)); - memset(&map->s390.clk_cmp, 0xff, sizeof(map->s390.clk_cmp)); - memset(&map->s390.psw, 0xff, sizeof(map->s390.psw)); - memset(&map->s390.pref_reg, 0xff, sizeof(map->s390.pref_reg)); - memset(&map->s390.acc_regs, 0xff, sizeof(map->s390.acc_regs)); - memset(&map->s390.fp_regs, 0xff, sizeof(map->s390.fp_regs)); - memset(&map->s390.gp_regs, 0xff, sizeof(map->s390.gp_regs)); - memset(&map->s390.ctrl_regs, 0xff, sizeof(map->s390.ctrl_regs)); + memset(&map->ext_save, 0xff, sizeof(map->ext_save)); + memset(&map->timer, 0xff, sizeof(map->timer)); + memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp)); + memset(&map->psw, 0xff, sizeof(map->psw)); + memset(&map->pref_reg, 0xff, sizeof(map->pref_reg)); + memset(&map->acc_regs, 0xff, sizeof(map->acc_regs)); + memset(&map->fp_regs, 0xff, sizeof(map->fp_regs)); + memset(&map->gp_regs, 0xff, sizeof(map->gp_regs)); + memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs)); } -static void __init set_s390x_lc_mask(union save_area *map) +#else /* CONFIG_32BIT */ + +static void __init set_lc_mask(struct save_area *map) { - memset(&map->s390x.fp_regs, 0xff, sizeof(map->s390x.fp_regs)); - memset(&map->s390x.gp_regs, 0xff, sizeof(map->s390x.gp_regs)); - memset(&map->s390x.psw, 0xff, sizeof(map->s390x.psw)); - memset(&map->s390x.pref_reg, 0xff, sizeof(map->s390x.pref_reg)); - memset(&map->s390x.fp_ctrl_reg, 0xff, sizeof(map->s390x.fp_ctrl_reg)); - memset(&map->s390x.tod_reg, 0xff, sizeof(map->s390x.tod_reg)); - memset(&map->s390x.timer, 0xff, sizeof(map->s390x.timer)); - memset(&map->s390x.clk_cmp, 0xff, sizeof(map->s390x.clk_cmp)); - memset(&map->s390x.acc_regs, 0xff, sizeof(map->s390x.acc_regs)); - memset(&map->s390x.ctrl_regs, 0xff, sizeof(map->s390x.ctrl_regs)); + memset(&map->fp_regs, 0xff, sizeof(map->fp_regs)); + memset(&map->gp_regs, 0xff, sizeof(map->gp_regs)); + memset(&map->psw, 0xff, sizeof(map->psw)); + memset(&map->pref_reg, 0xff, sizeof(map->pref_reg)); + memset(&map->fp_ctrl_reg, 0xff, sizeof(map->fp_ctrl_reg)); + memset(&map->tod_reg, 0xff, sizeof(map->tod_reg)); + memset(&map->timer, 0xff, sizeof(map->timer)); + memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp)); + memset(&map->acc_regs, 0xff, sizeof(map->acc_regs)); + memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs)); } +#endif /* CONFIG_32BIT */ + /* * Initialize dump globals for a given architecture */ @@ -599,21 +557,18 @@ static int __init sys_info_init(enum arch_id arch) switch (arch) { case ARCH_S390X: pr_alert("DETECTED 'S390X (64 bit) OS'\n"); - sys_info.sa_base = SAVE_AREA_BASE_S390X; - sys_info.sa_size = sizeof(struct save_area_s390x); - set_s390x_lc_mask(&sys_info.lc_mask); break; case ARCH_S390: pr_alert("DETECTED 'S390 (32 bit) OS'\n"); - sys_info.sa_base = SAVE_AREA_BASE_S390; - sys_info.sa_size = sizeof(struct save_area_s390); - set_s390_lc_mask(&sys_info.lc_mask); break; default: pr_alert("0x%x is an unknown architecture.\n",arch); return -EINVAL; } + sys_info.sa_base = SAVE_AREA_BASE; + sys_info.sa_size = sizeof(struct save_area); sys_info.arch = arch; + set_lc_mask(&sys_info.lc_mask); rc = init_cpu_info(arch); if (rc) return rc; @@ -660,8 +615,9 @@ static int __init get_mem_size(unsigned long *mem) static int __init zcore_header_init(int arch, struct zcore_header *hdr) { - int rc; + int rc, i; unsigned long memory = 0; + u32 prefix; if (arch == ARCH_S390X) hdr->arch_id = DUMP_ARCH_S390X; @@ -676,6 +632,14 @@ static int __init zcore_header_init(int arch, struct zcore_header *hdr) hdr->num_pages = memory / PAGE_SIZE; hdr->tod = get_clock(); get_cpu_id(&hdr->cpu_id); + for (i = 0; zfcpdump_save_areas[i]; i++) { + prefix = zfcpdump_save_areas[i]->pref_reg; + hdr->real_cpu_cnt++; + if (!prefix) + continue; + hdr->lc_vec[hdr->cpu_cnt] = prefix; + hdr->cpu_cnt++; + } return 0; } @@ -741,14 +705,21 @@ static int __init zcore_init(void) if (rc) goto fail; -#ifndef __s390x__ +#ifdef CONFIG_64BIT + if (arch == ARCH_S390) { + pr_alert("The 64-bit dump tool cannot be used for a " + "32-bit system\n"); + rc = -EINVAL; + goto fail; + } +#else /* CONFIG_64BIT */ if (arch == ARCH_S390X) { pr_alert("The 32-bit dump tool cannot be used for a " "64-bit system\n"); rc = -EINVAL; goto fail; } -#endif +#endif /* CONFIG_64BIT */ rc = sys_info_init(arch); if (rc) diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c index 7a28a3029a3f..37df42af05ec 100644 --- a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -224,8 +224,8 @@ static void ccwreq_log_status(struct ccw_device *cdev, enum io_status status) */ void ccw_request_handler(struct ccw_device *cdev) { + struct irb *irb = (struct irb *)&S390_lowcore.irb; struct ccw_request *req = &cdev->private->req; - struct irb *irb = (struct irb *) __LC_IRB; enum io_status status; int rc = -EOPNOTSUPP; diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 1ecd3e567648..4038f5b4f144 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -574,7 +574,7 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable, void *page) secm_area->request.length = 0x0050; secm_area->request.code = 0x0016; - secm_area->key = PAGE_DEFAULT_KEY; + secm_area->key = PAGE_DEFAULT_KEY >> 4; secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1; secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2; diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index c84ac9443079..852612f5dba0 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -51,7 +51,7 @@ static void chsc_subchannel_irq(struct subchannel *sch) { struct chsc_private *private = sch->private; struct chsc_request *request = private->request; - struct irb *irb = (struct irb *)__LC_IRB; + struct irb *irb = (struct irb *)&S390_lowcore.irb; CHSC_LOG(4, "irb"); CHSC_LOG_HEX(4, irb, sizeof(*irb)); @@ -237,7 +237,7 @@ static int chsc_async(struct chsc_async_area *chsc_area, int ret = -ENODEV; char dbf[10]; - chsc_area->header.key = PAGE_DEFAULT_KEY; + chsc_area->header.key = PAGE_DEFAULT_KEY >> 4; while ((sch = chsc_get_next_subchannel(sch))) { spin_lock(sch->lock); private = sch->private; diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 126f240715a4..f736cdcf08ad 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -625,8 +625,8 @@ void __irq_entry do_IRQ(struct pt_regs *regs) /* * Get interrupt information from lowcore */ - tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; - irb = (struct irb *) __LC_IRB; + tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; + irb = (struct irb *)&S390_lowcore.irb; do { kstat_cpu(smp_processor_id()).irqs[IO_INTERRUPT]++; /* @@ -661,7 +661,7 @@ void __irq_entry do_IRQ(struct pt_regs *regs) * We don't do this for VM because a tpi drops the cpu * out of the sie which costs more cycles than it saves. */ - } while (!MACHINE_IS_VM && tpi (NULL) != 0); + } while (MACHINE_IS_LPAR && tpi(NULL) != 0); irq_exit(); set_irq_regs(old_regs); } @@ -682,10 +682,10 @@ static int cio_tpi(void) struct irb *irb; int irq_context; - tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; + tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; if (tpi(NULL) != 1) return 0; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; /* Store interrupt response block to lowcore. */ if (tsch(tpi_info->schid, irb) != 0) /* Not status pending or not operational. */ @@ -885,7 +885,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid) struct tpi_info ti; if (tpi(&ti)) { - tsch(ti.schid, (struct irb *)__LC_IRB); + tsch(ti.schid, (struct irb *)&S390_lowcore.irb); if (schid_equal(&ti.schid, &schid)) return 0; } @@ -1083,7 +1083,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo) struct subchannel_id schid; struct schib schib; - schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID; + schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id; if (!schid.one) return -ENODEV; if (stsch(schid, &schib)) diff --git a/drivers/s390/cio/crw.c b/drivers/s390/cio/crw.c index d157665d0e76..425f741a280c 100644 --- a/drivers/s390/cio/crw.c +++ b/drivers/s390/cio/crw.c @@ -8,15 +8,16 @@ * Heiko Carstens <heiko.carstens@de.ibm.com>, */ -#include <linux/semaphore.h> #include <linux/mutex.h> #include <linux/kthread.h> #include <linux/init.h> +#include <linux/wait.h> #include <asm/crw.h> -static struct semaphore crw_semaphore; static DEFINE_MUTEX(crw_handler_mutex); static crw_handler_t crw_handlers[NR_RSCS]; +static atomic_t crw_nr_req = ATOMIC_INIT(0); +static DECLARE_WAIT_QUEUE_HEAD(crw_handler_wait_q); /** * crw_register_handler() - register a channel report word handler @@ -59,12 +60,14 @@ void crw_unregister_handler(int rsc) static int crw_collect_info(void *unused) { struct crw crw[2]; - int ccode; + int ccode, signal; unsigned int chain; - int ignore; repeat: - ignore = down_interruptible(&crw_semaphore); + signal = wait_event_interruptible(crw_handler_wait_q, + atomic_read(&crw_nr_req) > 0); + if (unlikely(signal)) + atomic_inc(&crw_nr_req); chain = 0; while (1) { crw_handler_t handler; @@ -122,25 +125,23 @@ repeat: /* chain is always 0 or 1 here. */ chain = crw[chain].chn ? chain + 1 : 0; } + if (atomic_dec_and_test(&crw_nr_req)) + wake_up(&crw_handler_wait_q); goto repeat; return 0; } void crw_handle_channel_report(void) { - up(&crw_semaphore); + atomic_inc(&crw_nr_req); + wake_up(&crw_handler_wait_q); } -/* - * Separate initcall needed for semaphore initialization since - * crw_handle_channel_report might be called before crw_machine_check_init. - */ -static int __init crw_init_semaphore(void) +void crw_wait_for_channel_report(void) { - init_MUTEX_LOCKED(&crw_semaphore); - return 0; + crw_handle_channel_report(); + wait_event(crw_handler_wait_q, atomic_read(&crw_nr_req) == 0); } -pure_initcall(crw_init_semaphore); /* * Machine checks for the channel subsystem must be enabled diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 7679aee6fa14..2769da54f2b9 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -18,6 +18,7 @@ #include <linux/list.h> #include <linux/reboot.h> #include <linux/suspend.h> +#include <linux/proc_fs.h> #include <asm/isc.h> #include <asm/crw.h> @@ -232,7 +233,7 @@ void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo) if (!get_device(&sch->dev)) return; sch->todo = todo; - if (!queue_work(slow_path_wq, &sch->todo_work)) { + if (!queue_work(cio_work_q, &sch->todo_work)) { /* Already queued, release workqueue ref. */ put_device(&sch->dev); } @@ -543,7 +544,7 @@ static void css_slow_path_func(struct work_struct *unused) } static DECLARE_WORK(slow_path_work, css_slow_path_func); -struct workqueue_struct *slow_path_wq; +struct workqueue_struct *cio_work_q; void css_schedule_eval(struct subchannel_id schid) { @@ -552,7 +553,7 @@ void css_schedule_eval(struct subchannel_id schid) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_sch_add(slow_subchannel_set, schid); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -563,7 +564,7 @@ void css_schedule_eval_all(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_fill(slow_subchannel_set); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -594,14 +595,14 @@ void css_schedule_eval_all_unreg(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_add_set(slow_subchannel_set, unreg_set); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); idset_free(unreg_set); } void css_wait_for_slow_path(void) { - flush_workqueue(slow_path_wq); + flush_workqueue(cio_work_q); } /* Schedule reprobing of all unregistered subchannels. */ @@ -992,12 +993,21 @@ static int __init channel_subsystem_init(void) ret = css_bus_init(); if (ret) return ret; - + cio_work_q = create_singlethread_workqueue("cio"); + if (!cio_work_q) { + ret = -ENOMEM; + goto out_bus; + } ret = io_subchannel_init(); if (ret) - css_bus_cleanup(); + goto out_wq; return ret; +out_wq: + destroy_workqueue(cio_work_q); +out_bus: + css_bus_cleanup(); + return ret; } subsys_initcall(channel_subsystem_init); @@ -1006,10 +1016,25 @@ static int css_settle(struct device_driver *drv, void *unused) struct css_driver *cssdrv = to_cssdriver(drv); if (cssdrv->settle) - cssdrv->settle(); + return cssdrv->settle(); return 0; } +int css_complete_work(void) +{ + int ret; + + /* Wait for the evaluation of subchannels to finish. */ + ret = wait_event_interruptible(css_eval_wq, + atomic_read(&css_eval_scheduled) == 0); + if (ret) + return -EINTR; + flush_workqueue(cio_work_q); + /* Wait for the subchannel type specific initialization to finish */ + return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); +} + + /* * Wait for the initialization of devices to finish, to make sure we are * done with our setup if the search for the root device starts. @@ -1018,13 +1043,41 @@ static int __init channel_subsystem_init_sync(void) { /* Start initial subchannel evaluation. */ css_schedule_eval_all(); - /* Wait for the evaluation of subchannels to finish. */ - wait_event(css_eval_wq, atomic_read(&css_eval_scheduled) == 0); - /* Wait for the subchannel type specific initialization to finish */ - return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); + css_complete_work(); + return 0; } subsys_initcall_sync(channel_subsystem_init_sync); +#ifdef CONFIG_PROC_FS +static ssize_t cio_settle_write(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + int ret; + + /* Handle pending CRW's. */ + crw_wait_for_channel_report(); + ret = css_complete_work(); + + return ret ? ret : count; +} + +static const struct file_operations cio_settle_proc_fops = { + .write = cio_settle_write, +}; + +static int __init cio_settle_init(void) +{ + struct proc_dir_entry *entry; + + entry = proc_create("cio_settle", S_IWUSR, NULL, + &cio_settle_proc_fops); + if (!entry) + return -ENOMEM; + return 0; +} +device_initcall(cio_settle_init); +#endif /*CONFIG_PROC_FS*/ + int sch_is_pseudo_sch(struct subchannel *sch) { return sch == to_css(sch->dev.parent)->pseudo_subchannel; diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index fe84b92cde60..7e37886de231 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -95,7 +95,7 @@ struct css_driver { int (*freeze)(struct subchannel *); int (*thaw) (struct subchannel *); int (*restore)(struct subchannel *); - void (*settle)(void); + int (*settle)(void); const char *name; }; @@ -146,12 +146,13 @@ extern struct channel_subsystem *channel_subsystems[]; /* Helper functions to build lists for the slow path. */ void css_schedule_eval(struct subchannel_id schid); void css_schedule_eval_all(void); +int css_complete_work(void); int sch_is_pseudo_sch(struct subchannel *); struct schib; int css_sch_is_valid(struct schib *); -extern struct workqueue_struct *slow_path_wq; +extern struct workqueue_struct *cio_work_q; void css_wait_for_slow_path(void); void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo); #endif diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index a6c7d5426fb2..c6abb75c4615 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -136,7 +136,6 @@ static int io_subchannel_sch_event(struct subchannel *, int); static int io_subchannel_chp_event(struct subchannel *, struct chp_link *, int); static void recovery_func(unsigned long data); -struct workqueue_struct *ccw_device_work; wait_queue_head_t ccw_device_init_wq; atomic_t ccw_device_init_count; @@ -159,11 +158,16 @@ static int io_subchannel_prepare(struct subchannel *sch) return 0; } -static void io_subchannel_settle(void) +static int io_subchannel_settle(void) { - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - flush_workqueue(ccw_device_work); + int ret; + + ret = wait_event_interruptible(ccw_device_init_wq, + atomic_read(&ccw_device_init_count) == 0); + if (ret) + return -EINTR; + flush_workqueue(cio_work_q); + return 0; } static struct css_driver io_subchannel_driver = { @@ -188,27 +192,13 @@ int __init io_subchannel_init(void) atomic_set(&ccw_device_init_count, 0); setup_timer(&recovery_timer, recovery_func, 0); - ccw_device_work = create_singlethread_workqueue("cio"); - if (!ccw_device_work) - return -ENOMEM; - slow_path_wq = create_singlethread_workqueue("kslowcrw"); - if (!slow_path_wq) { - ret = -ENOMEM; - goto out_err; - } - if ((ret = bus_register (&ccw_bus_type))) - goto out_err; - + ret = bus_register(&ccw_bus_type); + if (ret) + return ret; ret = css_driver_register(&io_subchannel_driver); if (ret) - goto out_err; + bus_unregister(&ccw_bus_type); - return 0; -out_err: - if (ccw_device_work) - destroy_workqueue(ccw_device_work); - if (slow_path_wq) - destroy_workqueue(slow_path_wq); return ret; } @@ -1348,7 +1338,7 @@ static enum io_sch_action sch_get_action(struct subchannel *sch) /* Not operational. */ if (!cdev) return IO_SCH_UNREG; - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) return IO_SCH_UNREG; return IO_SCH_ORPH_UNREG; } @@ -1356,12 +1346,12 @@ static enum io_sch_action sch_get_action(struct subchannel *sch) if (!cdev) return IO_SCH_ATTACH; if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) return IO_SCH_UNREG_ATTACH; return IO_SCH_ORPH_ATTACH; } if ((sch->schib.pmcw.pam & sch->opm) == 0) { - if (!ccw_device_notify(cdev, CIO_NO_PATH)) + if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) return IO_SCH_UNREG; return IO_SCH_DISC; } @@ -1410,6 +1400,12 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) rc = 0; goto out_unlock; case IO_SCH_VERIFY: + if (cdev->private->flags.resuming == 1) { + if (cio_enable_subchannel(sch, (u32)(addr_t)sch)) { + ccw_device_set_notoper(cdev); + break; + } + } /* Trigger path verification. */ io_subchannel_verify(sch); rc = 0; @@ -1448,7 +1444,8 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) break; case IO_SCH_UNREG_ATTACH: /* Unregister ccw device. */ - ccw_device_unregister(cdev); + if (!cdev->private->flags.resuming) + ccw_device_unregister(cdev); break; default: break; @@ -1457,7 +1454,8 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) switch (action) { case IO_SCH_ORPH_UNREG: case IO_SCH_UNREG: - css_sch_device_unregister(sch); + if (!cdev || !cdev->private->flags.resuming) + css_sch_device_unregister(sch); break; case IO_SCH_ORPH_ATTACH: case IO_SCH_UNREG_ATTACH: @@ -1779,26 +1777,42 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); - if (cio_is_console(sch->schid)) - goto out; + spin_lock_irq(sch->lock); + if (cio_is_console(sch->schid)) { + cio_enable_subchannel(sch, (u32)(addr_t)sch); + goto out_unlock; + } /* * While we were sleeping, devices may have gone or become * available again. Kick re-detection. */ - spin_lock_irq(sch->lock); cdev->private->flags.resuming = 1; + css_schedule_eval(sch->schid); + spin_unlock_irq(sch->lock); + css_complete_work(); + + /* cdev may have been moved to a different subchannel. */ + sch = to_subchannel(cdev->dev.parent); + spin_lock_irq(sch->lock); + if (cdev->private->state != DEV_STATE_ONLINE && + cdev->private->state != DEV_STATE_OFFLINE) + goto out_unlock; + ccw_device_recognition(cdev); spin_unlock_irq(sch->lock); wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev) || cdev->private->state == DEV_STATE_DISCONNECTED); -out: + spin_lock_irq(sch->lock); + +out_unlock: cdev->private->flags.resuming = 0; + spin_unlock_irq(sch->lock); } static int resume_handle_boxed(struct ccw_device *cdev) { cdev->private->state = DEV_STATE_BOXED; - if (ccw_device_notify(cdev, CIO_BOXED)) + if (ccw_device_notify(cdev, CIO_BOXED) == NOTIFY_OK) return 0; ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); return -ENODEV; @@ -1807,7 +1821,7 @@ static int resume_handle_boxed(struct ccw_device *cdev) static int resume_handle_disc(struct ccw_device *cdev) { cdev->private->state = DEV_STATE_DISCONNECTED; - if (ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) == NOTIFY_OK) return 0; ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); return -ENODEV; @@ -1816,40 +1830,31 @@ static int resume_handle_disc(struct ccw_device *cdev) static int ccw_device_pm_restore(struct device *dev) { struct ccw_device *cdev = to_ccwdev(dev); - struct subchannel *sch = to_subchannel(cdev->dev.parent); - int ret = 0, cm_enabled; + struct subchannel *sch; + int ret = 0; __ccw_device_pm_restore(cdev); + sch = to_subchannel(cdev->dev.parent); spin_lock_irq(sch->lock); - if (cio_is_console(sch->schid)) { - cio_enable_subchannel(sch, (u32)(addr_t)sch); - spin_unlock_irq(sch->lock); + if (cio_is_console(sch->schid)) goto out_restore; - } - cdev->private->flags.donotify = 0; + /* check recognition results */ switch (cdev->private->state) { case DEV_STATE_OFFLINE: + case DEV_STATE_ONLINE: + cdev->private->flags.donotify = 0; break; case DEV_STATE_BOXED: ret = resume_handle_boxed(cdev); - spin_unlock_irq(sch->lock); if (ret) - goto out; + goto out_unlock; goto out_restore; - case DEV_STATE_DISCONNECTED: - goto out_disc_unlock; default: - goto out_unreg_unlock; - } - /* check if the device id has changed */ - if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - CIO_MSG_EVENT(0, "resume: sch 0.%x.%04x: failed (devno " - "changed from %04x to %04x)\n", - sch->schid.ssid, sch->schid.sch_no, - cdev->private->dev_id.devno, - sch->schib.pmcw.dev); - goto out_unreg_unlock; + ret = resume_handle_disc(cdev); + if (ret) + goto out_unlock; + goto out_restore; } /* check if the device type has changed */ if (!ccw_device_test_sense_data(cdev)) { @@ -1858,24 +1863,30 @@ static int ccw_device_pm_restore(struct device *dev) ret = -ENODEV; goto out_unlock; } - if (!cdev->online) { - ret = 0; + if (!cdev->online) goto out_unlock; - } - ret = ccw_device_online(cdev); - if (ret) - goto out_disc_unlock; - cm_enabled = cdev->private->cmb != NULL; + if (ccw_device_online(cdev)) { + ret = resume_handle_disc(cdev); + if (ret) + goto out_unlock; + goto out_restore; + } spin_unlock_irq(sch->lock); - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - if (cdev->private->state != DEV_STATE_ONLINE) { - spin_lock_irq(sch->lock); - goto out_disc_unlock; + spin_lock_irq(sch->lock); + + if (ccw_device_notify(cdev, CIO_OPER) == NOTIFY_BAD) { + ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); + ret = -ENODEV; + goto out_unlock; } - if (cm_enabled) { + + /* reenable cmf, if needed */ + if (cdev->private->cmb) { + spin_unlock_irq(sch->lock); ret = ccw_set_cmf(cdev, 1); + spin_lock_irq(sch->lock); if (ret) { CIO_MSG_EVENT(2, "resume: cdev 0.%x.%04x: cmf failed " "(rc=%d)\n", cdev->private->dev_id.ssid, @@ -1885,21 +1896,11 @@ static int ccw_device_pm_restore(struct device *dev) } out_restore: + spin_unlock_irq(sch->lock); if (cdev->online && cdev->drv && cdev->drv->restore) ret = cdev->drv->restore(cdev); -out: return ret; -out_disc_unlock: - ret = resume_handle_disc(cdev); - spin_unlock_irq(sch->lock); - if (ret) - return ret; - goto out_restore; - -out_unreg_unlock: - ccw_device_sched_todo(cdev, CDEV_TODO_UNREG_EVAL); - ret = -ENODEV; out_unlock: spin_unlock_irq(sch->lock); return ret; @@ -2028,7 +2029,7 @@ void ccw_device_sched_todo(struct ccw_device *cdev, enum cdev_todo todo) /* Get workqueue ref. */ if (!get_device(&cdev->dev)) return; - if (!queue_work(slow_path_wq, &cdev->private->todo_work)) { + if (!queue_work(cio_work_q, &cdev->private->todo_work)) { /* Already queued, release workqueue ref. */ put_device(&cdev->dev); } @@ -2041,5 +2042,4 @@ EXPORT_SYMBOL(ccw_driver_register); EXPORT_SYMBOL(ccw_driver_unregister); EXPORT_SYMBOL(get_ccwdev_by_busid); EXPORT_SYMBOL(ccw_bus_type); -EXPORT_SYMBOL(ccw_device_work); EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id); diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index bcfe13e42638..379de2d1ec49 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -4,7 +4,7 @@ #include <asm/ccwdev.h> #include <asm/atomic.h> #include <linux/wait.h> - +#include <linux/notifier.h> #include "io_sch.h" /* @@ -71,7 +71,6 @@ dev_fsm_final_state(struct ccw_device *cdev) cdev->private->state == DEV_STATE_BOXED); } -extern struct workqueue_struct *ccw_device_work; extern wait_queue_head_t ccw_device_init_wq; extern atomic_t ccw_device_init_count; int __init io_subchannel_init(void); diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index ae760658a131..c56ab94612f9 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -313,21 +313,43 @@ ccw_device_sense_id_done(struct ccw_device *cdev, int err) } } +/** + * ccw_device_notify() - inform the device's driver about an event + * @cdev: device for which an event occured + * @event: event that occurred + * + * Returns: + * -%EINVAL if the device is offline or has no driver. + * -%EOPNOTSUPP if the device's driver has no notifier registered. + * %NOTIFY_OK if the driver wants to keep the device. + * %NOTIFY_BAD if the driver doesn't want to keep the device. + */ int ccw_device_notify(struct ccw_device *cdev, int event) { + int ret = -EINVAL; + if (!cdev->drv) - return 0; + goto out; if (!cdev->online) - return 0; + goto out; CIO_MSG_EVENT(2, "notify called for 0.%x.%04x, event=%d\n", cdev->private->dev_id.ssid, cdev->private->dev_id.devno, event); - return cdev->drv->notify ? cdev->drv->notify(cdev, event) : 0; + if (!cdev->drv->notify) { + ret = -EOPNOTSUPP; + goto out; + } + if (cdev->drv->notify(cdev, event)) + ret = NOTIFY_OK; + else + ret = NOTIFY_BAD; +out: + return ret; } static void ccw_device_oper_notify(struct ccw_device *cdev) { - if (ccw_device_notify(cdev, CIO_OPER)) { + if (ccw_device_notify(cdev, CIO_OPER) == NOTIFY_OK) { /* Reenable channel measurements, if needed. */ ccw_device_sched_todo(cdev, CDEV_TODO_ENABLE_CMF); return; @@ -361,14 +383,15 @@ ccw_device_done(struct ccw_device *cdev, int state) case DEV_STATE_BOXED: CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED)) + if (cdev->online && + ccw_device_notify(cdev, CIO_BOXED) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); cdev->private->flags.donotify = 0; break; case DEV_STATE_NOT_OPER: CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -378,7 +401,7 @@ ccw_device_done(struct ccw_device *cdev, int state) CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel " "%04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (!ccw_device_notify(cdev, CIO_NO_PATH)) + if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -586,7 +609,7 @@ ccw_device_offline(struct ccw_device *cdev) static void ccw_device_generic_notoper(struct ccw_device *cdev, enum dev_event dev_event) { - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -667,7 +690,7 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event) struct irb *irb; int is_cmd; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; is_cmd = !scsw_is_tm(&irb->scsw); /* Check for unsolicited interrupt. */ if (!scsw_is_solicited(&irb->scsw)) { @@ -732,7 +755,7 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event) { struct irb *irb; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; /* Check for unsolicited interrupt. */ if (scsw_stctl(&irb->scsw) == (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) { diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 44f2f6a97f33..48aa0647432b 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -208,18 +208,27 @@ struct qdio_dev_perf_stat { unsigned int eqbs_partial; unsigned int sqbs; unsigned int sqbs_partial; +} ____cacheline_aligned; + +struct qdio_queue_perf_stat { + /* + * Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128. + * Since max. 127 SBALs are scanned reuse entry for 128 as queue full + * aka 127 SBALs found. + */ + unsigned int nr_sbals[8]; + unsigned int nr_sbal_error; + unsigned int nr_sbal_nop; + unsigned int nr_sbal_total; }; struct qdio_input_q { /* input buffer acknowledgement flag */ int polling; - /* first ACK'ed buffer */ int ack_start; - /* how much sbals are acknowledged with qebsm */ int ack_count; - /* last time of noticing incoming data */ u64 timestamp; }; @@ -227,40 +236,27 @@ struct qdio_input_q { struct qdio_output_q { /* PCIs are enabled for the queue */ int pci_out_enabled; - /* IQDIO: output multiple buffers (enhanced SIGA) */ int use_enh_siga; - /* timer to check for more outbound work */ struct timer_list timer; }; +/* + * Note on cache alignment: grouped slsb and write mostly data at the beginning + * sbal[] is read-only and starts on a new cacheline followed by read mostly. + */ struct qdio_q { struct slsb slsb; + union { struct qdio_input_q in; struct qdio_output_q out; } u; - /* queue number */ - int nr; - - /* bitmask of queue number */ - int mask; - - /* input or output queue */ - int is_input_q; - - /* list of thinint input queues */ - struct list_head entry; - - /* upper-layer program handler */ - qdio_handler_t (*handler); - /* * inbound: next buffer the program should check for - * outbound: next buffer to check for having been processed - * by the card + * outbound: next buffer to check if adapter processed it */ int first_to_check; @@ -273,16 +269,32 @@ struct qdio_q { /* number of buffers in use by the adapter */ atomic_t nr_buf_used; - struct qdio_irq *irq_ptr; - struct dentry *debugfs_q; - struct tasklet_struct tasklet; - /* error condition during a data transfer */ unsigned int qdio_error; - struct sl *sl; - struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; + struct tasklet_struct tasklet; + struct qdio_queue_perf_stat q_stats; + + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q] ____cacheline_aligned; + + /* queue number */ + int nr; + + /* bitmask of queue number */ + int mask; + + /* input or output queue */ + int is_input_q; + + /* list of thinint input queues */ + struct list_head entry; + /* upper-layer program handler */ + qdio_handler_t (*handler); + + struct dentry *debugfs_q; + struct qdio_irq *irq_ptr; + struct sl *sl; /* * Warning: Leave this member at the end so it won't be cleared in * qdio_fill_qs. A page is allocated under this pointer and used for @@ -317,12 +329,8 @@ struct qdio_irq { struct qdio_ssqd_desc ssqd_desc; void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); - struct qdio_dev_perf_stat perf_stat; int perf_stat_enabled; - /* - * Warning: Leave these members together at the end so they won't be - * cleared in qdio_setup_irq. - */ + struct qdr *qdr; unsigned long chsc_page; @@ -331,6 +339,7 @@ struct qdio_irq { debug_info_t *debug_area; struct mutex setup_mutex; + struct qdio_dev_perf_stat perf_stat; }; /* helper functions */ @@ -341,9 +350,20 @@ struct qdio_irq { (irq->qib.qfmt == QDIO_IQDIO_QFMT || \ css_general_characteristics.aif_osa) -#define qperf(qdev,attr) qdev->perf_stat.attr -#define qperf_inc(q,attr) if (q->irq_ptr->perf_stat_enabled) \ - q->irq_ptr->perf_stat.attr++ +#define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr)) + +#define qperf_inc(__q, __attr) \ +({ \ + struct qdio_irq *qdev = (__q)->irq_ptr; \ + if (qdev->perf_stat_enabled) \ + (qdev->perf_stat.__attr)++; \ +}) + +static inline void account_sbals_error(struct qdio_q *q, int count) +{ + q->q_stats.nr_sbal_error += count; + q->q_stats.nr_sbal_total += count; +} /* the highest iqdio queue is used for multicast */ static inline int multicast_outbound(struct qdio_q *q) diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index f49761ff9a00..c94eb2a0fa2e 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -60,7 +60,7 @@ static int qstat_show(struct seq_file *m, void *v) seq_printf(m, "ftc: %d last_move: %d\n", q->first_to_check, q->last_move); seq_printf(m, "polling: %d ack start: %d ack count: %d\n", q->u.in.polling, q->u.in.ack_start, q->u.in.ack_count); - seq_printf(m, "slsb buffer states:\n"); + seq_printf(m, "SBAL states:\n"); seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n"); for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { @@ -97,6 +97,20 @@ static int qstat_show(struct seq_file *m, void *v) } seq_printf(m, "\n"); seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n"); + + seq_printf(m, "\nSBAL statistics:"); + if (!q->irq_ptr->perf_stat_enabled) { + seq_printf(m, " disabled\n"); + return 0; + } + + seq_printf(m, "\n1 2.. 4.. 8.. " + "16.. 32.. 64.. 127\n"); + for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++) + seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]); + seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n", + q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop, + q->q_stats.nr_sbal_total); return 0; } @@ -181,9 +195,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf, { struct seq_file *seq = file->private_data; struct qdio_irq *irq_ptr = seq->private; + struct qdio_q *q; unsigned long val; char buf[8]; - int ret; + int ret, i; if (!irq_ptr) return 0; @@ -201,6 +216,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf, case 0: irq_ptr->perf_stat_enabled = 0; memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); + for_each_input_queue(irq_ptr, q, i) + memset(&q->q_stats, 0, sizeof(q->q_stats)); + for_each_output_queue(irq_ptr, q, i) + memset(&q->q_stats, 0, sizeof(q->q_stats)); break; case 1: irq_ptr->perf_stat_enabled = 1; diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 62b654af9237..232ef047ba34 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -392,6 +392,20 @@ static inline void qdio_stop_polling(struct qdio_q *q) set_buf_state(q, q->u.in.ack_start, SLSB_P_INPUT_NOT_INIT); } +static inline void account_sbals(struct qdio_q *q, int count) +{ + int pos = 0; + + q->q_stats.nr_sbal_total += count; + if (count == QDIO_MAX_BUFFERS_MASK) { + q->q_stats.nr_sbals[7]++; + return; + } + while (count >>= 1) + pos++; + q->q_stats.nr_sbals[pos]++; +} + static void announce_buffer_error(struct qdio_q *q, int count) { q->qdio_error |= QDIO_ERROR_SLSB_STATE; @@ -487,16 +501,22 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) q->first_to_check = add_buf(q->first_to_check, count); if (atomic_sub(count, &q->nr_buf_used) == 0) qperf_inc(q, inbound_queue_full); + if (q->irq_ptr->perf_stat_enabled) + account_sbals(q, count); break; case SLSB_P_INPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); + if (q->irq_ptr->perf_stat_enabled) + account_sbals_error(q, count); break; case SLSB_CU_INPUT_EMPTY: case SLSB_P_INPUT_NOT_INIT: case SLSB_P_INPUT_ACK: + if (q->irq_ptr->perf_stat_enabled) + q->q_stats.nr_sbal_nop++; DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop"); break; default: @@ -514,7 +534,7 @@ static int qdio_inbound_q_moved(struct qdio_q *q) if ((bufnr != q->last_move) || q->qdio_error) { q->last_move = bufnr; - if (!is_thinint_irq(q->irq_ptr) && !MACHINE_IS_VM) + if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR) q->u.in.timestamp = get_usecs(); return 1; } else @@ -643,15 +663,21 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); + if (q->irq_ptr->perf_stat_enabled) + account_sbals(q, count); break; case SLSB_P_OUTPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); + if (q->irq_ptr->perf_stat_enabled) + account_sbals_error(q, count); break; case SLSB_CU_OUTPUT_PRIMED: /* the adapter has not fetched the output yet */ + if (q->irq_ptr->perf_stat_enabled) + q->q_stats.nr_sbal_nop++; DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr); break; case SLSB_P_OUTPUT_NOT_INIT: diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 8c2dea5fa2b4..7f4a75465140 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -333,10 +333,10 @@ static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, irq_ptr->qdr->qdf0[i + nr].slsba = (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; - irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; } static void setup_qdr(struct qdio_irq *irq_ptr, @@ -350,7 +350,7 @@ static void setup_qdr(struct qdio_irq *irq_ptr, irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; - irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; for (i = 0; i < qdio_init->no_input_qs; i++) __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); @@ -382,7 +382,15 @@ int qdio_setup_irq(struct qdio_initialize *init_data) struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; int rc; - memset(irq_ptr, 0, ((char *)&irq_ptr->qdr) - ((char *)irq_ptr)); + memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); + memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); + memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); + memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); + memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); + + irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; + irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; + /* wipes qib.ac, required by ar7063 */ memset(irq_ptr->qdr, 0, sizeof(struct qdr)); diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 091d904d3182..9942c1031b25 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -198,8 +198,8 @@ static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) .code = 0x0021, }; scssc_area->operation_code = 0; - scssc_area->ks = PAGE_DEFAULT_KEY; - scssc_area->kc = PAGE_DEFAULT_KEY; + scssc_area->ks = PAGE_DEFAULT_KEY >> 4; + scssc_area->kc = PAGE_DEFAULT_KEY >> 4; scssc_area->isc = QDIO_AIRQ_ISC; scssc_area->schid = irq_ptr->schid; diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index c68be24e27d9..ba50fe02e572 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -33,6 +33,7 @@ #include <linux/miscdevice.h> #include <linux/fs.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/compat.h> #include <linux/smp_lock.h> #include <asm/atomic.h> @@ -912,126 +913,105 @@ static struct miscdevice zcrypt_misc_device = { */ static struct proc_dir_entry *zcrypt_entry; -static int sprintcl(unsigned char *outaddr, unsigned char *addr, - unsigned int len) +static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len) { - int hl, i; + int i; - hl = 0; for (i = 0; i < len; i++) - hl += sprintf(outaddr+hl, "%01x", (unsigned int) addr[i]); - hl += sprintf(outaddr+hl, " "); - return hl; + seq_printf(m, "%01x", (unsigned int) addr[i]); + seq_putc(m, ' '); } -static int sprintrw(unsigned char *outaddr, unsigned char *addr, - unsigned int len) +static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len) { - int hl, inl, c, cx; + int inl, c, cx; - hl = sprintf(outaddr, " "); + seq_printf(m, " "); inl = 0; for (c = 0; c < (len / 16); c++) { - hl += sprintcl(outaddr+hl, addr+inl, 16); + sprintcl(m, addr+inl, 16); inl += 16; } cx = len%16; if (cx) { - hl += sprintcl(outaddr+hl, addr+inl, cx); + sprintcl(m, addr+inl, cx); inl += cx; } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int sprinthx(unsigned char *title, unsigned char *outaddr, - unsigned char *addr, unsigned int len) +static void sprinthx(unsigned char *title, struct seq_file *m, + unsigned char *addr, unsigned int len) { - int hl, inl, r, rx; + int inl, r, rx; - hl = sprintf(outaddr, "\n%s\n", title); + seq_printf(m, "\n%s\n", title); inl = 0; for (r = 0; r < (len / 64); r++) { - hl += sprintrw(outaddr+hl, addr+inl, 64); + sprintrw(m, addr+inl, 64); inl += 64; } rx = len % 64; if (rx) { - hl += sprintrw(outaddr+hl, addr+inl, rx); + sprintrw(m, addr+inl, rx); inl += rx; } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int sprinthx4(unsigned char *title, unsigned char *outaddr, - unsigned int *array, unsigned int len) +static void sprinthx4(unsigned char *title, struct seq_file *m, + unsigned int *array, unsigned int len) { - int hl, r; + int r; - hl = sprintf(outaddr, "\n%s\n", title); + seq_printf(m, "\n%s\n", title); for (r = 0; r < len; r++) { if ((r % 8) == 0) - hl += sprintf(outaddr+hl, " "); - hl += sprintf(outaddr+hl, "%08X ", array[r]); + seq_printf(m, " "); + seq_printf(m, "%08X ", array[r]); if ((r % 8) == 7) - hl += sprintf(outaddr+hl, "\n"); + seq_putc(m, '\n'); } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int zcrypt_status_read(char *resp_buff, char **start, off_t offset, - int count, int *eof, void *data) +static int zcrypt_proc_show(struct seq_file *m, void *v) { - unsigned char *workarea; - int len; - - len = 0; - - /* resp_buff is a page. Use the right half for a work area */ - workarea = resp_buff + 2000; - len += sprintf(resp_buff + len, "\nzcrypt version: %d.%d.%d\n", - ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); - len += sprintf(resp_buff + len, "Cryptographic domain: %d\n", - ap_domain_index); - len += sprintf(resp_buff + len, "Total device count: %d\n", - zcrypt_device_count); - len += sprintf(resp_buff + len, "PCICA count: %d\n", - zcrypt_count_type(ZCRYPT_PCICA)); - len += sprintf(resp_buff + len, "PCICC count: %d\n", - zcrypt_count_type(ZCRYPT_PCICC)); - len += sprintf(resp_buff + len, "PCIXCC MCL2 count: %d\n", - zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); - len += sprintf(resp_buff + len, "PCIXCC MCL3 count: %d\n", - zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); - len += sprintf(resp_buff + len, "CEX2C count: %d\n", - zcrypt_count_type(ZCRYPT_CEX2C)); - len += sprintf(resp_buff + len, "CEX2A count: %d\n", - zcrypt_count_type(ZCRYPT_CEX2A)); - len += sprintf(resp_buff + len, "CEX3C count: %d\n", - zcrypt_count_type(ZCRYPT_CEX3C)); - len += sprintf(resp_buff + len, "CEX3A count: %d\n", - zcrypt_count_type(ZCRYPT_CEX3A)); - len += sprintf(resp_buff + len, "requestq count: %d\n", - zcrypt_requestq_count()); - len += sprintf(resp_buff + len, "pendingq count: %d\n", - zcrypt_pendingq_count()); - len += sprintf(resp_buff + len, "Total open handles: %d\n\n", - atomic_read(&zcrypt_open_count)); + char workarea[sizeof(int) * AP_DEVICES]; + + seq_printf(m, "\nzcrypt version: %d.%d.%d\n", + ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); + seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index); + seq_printf(m, "Total device count: %d\n", zcrypt_device_count); + seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA)); + seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC)); + seq_printf(m, "PCIXCC MCL2 count: %d\n", + zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); + seq_printf(m, "PCIXCC MCL3 count: %d\n", + zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); + seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C)); + seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A)); + seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C)); + seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A)); + seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count()); + seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count()); + seq_printf(m, "Total open handles: %d\n\n", + atomic_read(&zcrypt_open_count)); zcrypt_status_mask(workarea); - len += sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " - "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", - resp_buff+len, workarea, AP_DEVICES); + sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " + "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", + m, workarea, AP_DEVICES); zcrypt_qdepth_mask(workarea); - len += sprinthx("Waiting work element counts", - resp_buff+len, workarea, AP_DEVICES); + sprinthx("Waiting work element counts", m, workarea, AP_DEVICES); zcrypt_perdev_reqcnt((int *) workarea); - len += sprinthx4("Per-device successfully completed request counts", - resp_buff+len,(unsigned int *) workarea, AP_DEVICES); - *eof = 1; - memset((void *) workarea, 0x00, AP_DEVICES * sizeof(unsigned int)); - return len; + sprinthx4("Per-device successfully completed request counts", + m, (unsigned int *) workarea, AP_DEVICES); + return 0; +} + +static int zcrypt_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, zcrypt_proc_show, NULL); } static void zcrypt_disable_card(int index) @@ -1061,11 +1041,11 @@ static void zcrypt_enable_card(int index) spin_unlock_bh(&zcrypt_device_lock); } -static int zcrypt_status_write(struct file *file, const char __user *buffer, - unsigned long count, void *data) +static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) { unsigned char *lbuf, *ptr; - unsigned long local_count; + size_t local_count; int j; if (count <= 0) @@ -1115,6 +1095,15 @@ out: return count; } +static const struct file_operations zcrypt_proc_fops = { + .owner = THIS_MODULE, + .open = zcrypt_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = zcrypt_proc_write, +}; + static int zcrypt_rng_device_count; static u32 *zcrypt_rng_buffer; static int zcrypt_rng_buffer_index; @@ -1197,14 +1186,11 @@ int __init zcrypt_api_init(void) goto out; /* Set up the proc file system */ - zcrypt_entry = create_proc_entry("driver/z90crypt", 0644, NULL); + zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, &zcrypt_proc_fops); if (!zcrypt_entry) { rc = -ENOMEM; goto out_misc; } - zcrypt_entry->data = NULL; - zcrypt_entry->read_proc = zcrypt_status_read; - zcrypt_entry->write_proc = zcrypt_status_write; return 0; diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 2930fc763ac5..b2fc4fd63f7f 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -340,11 +340,11 @@ static void kvm_extint_handler(u16 code) return; /* The LSB might be overloaded, we have to mask it */ - vq = (struct virtqueue *) ((*(long *) __LC_PFAULT_INTPARM) & ~1UL); + vq = (struct virtqueue *)(S390_lowcore.ext_params2 & ~1UL); /* We use the LSB of extparam, to decide, if this interrupt is a config * change or a "standard" interrupt */ - config_changed = (*(int *) __LC_EXT_PARAMS & 1); + config_changed = S390_lowcore.ext_params & 1; if (config_changed) { struct virtio_driver *drv; diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index e9b15c3746fa..a81ff7bc5fa1 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1217,12 +1217,6 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags) } #endif -#ifdef CONFIG_SERIAL_8250_AU1X00 - /* if access method is AU, it is a 16550 with a quirk */ - if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU) - up->bugs |= UART_BUG_NOMSR; -#endif - serial_outp(up, UART_LCR, save_lcr); if (up->capabilities != uart_config[up->port.type].flags) { @@ -2428,7 +2422,7 @@ serial8250_pm(struct uart_port *port, unsigned int state, static unsigned int serial8250_port_size(struct uart_8250_port *pt) { if (pt->port.iotype == UPIO_AU) - return 0x100000; + return 0x1000; #ifdef CONFIG_ARCH_OMAP if (is_omap_port(pt)) return 0x16 << pt->port.regshift; @@ -2585,6 +2579,13 @@ static void serial8250_config_port(struct uart_port *port, int flags) if (flags & UART_CONFIG_TYPE) autoconfig(up, probeflags); + +#ifdef CONFIG_SERIAL_8250_AU1X00 + /* if access method is AU, it is a 16550 with a quirk */ + if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU) + up->bugs |= UART_BUG_NOMSR; +#endif + if (up->port.type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ) autoconfig_irq(up); diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 7ce9e9f567a3..3119fddaedb5 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -74,6 +74,7 @@ #include <linux/io.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <linux/clk.h> #include <asm/mpc52xx.h> #include <asm/mpc52xx_psc.h> @@ -113,6 +114,7 @@ static void mpc52xx_uart_of_enumerate(void); /* Forward declaration of the interruption handling routine */ static irqreturn_t mpc52xx_uart_int(int irq, void *dev_id); +static irqreturn_t mpc5xxx_uart_process_int(struct uart_port *port); /* Simple macro to test if a port is console or not. This one is taken @@ -145,6 +147,11 @@ struct psc_ops { void (*cw_disable_ints)(struct uart_port *port); void (*cw_restore_ints)(struct uart_port *port); unsigned long (*getuartclk)(void *p); + int (*clock)(struct uart_port *port, int enable); + int (*fifoc_init)(void); + void (*fifoc_uninit)(void); + void (*get_irq)(struct uart_port *, struct device_node *); + irqreturn_t (*handle_irq)(struct uart_port *port); }; #ifdef CONFIG_PPC_MPC52xx @@ -256,6 +263,18 @@ static unsigned long mpc52xx_getuartclk(void *p) return mpc5xxx_get_bus_frequency(p) / 2; } +static void mpc52xx_psc_get_irq(struct uart_port *port, struct device_node *np) +{ + port->irqflags = IRQF_DISABLED; + port->irq = irq_of_parse_and_map(np, 0); +} + +/* 52xx specific interrupt handler. The caller holds the port lock */ +static irqreturn_t mpc52xx_psc_handle_irq(struct uart_port *port) +{ + return mpc5xxx_uart_process_int(port); +} + static struct psc_ops mpc52xx_psc_ops = { .fifo_init = mpc52xx_psc_fifo_init, .raw_rx_rdy = mpc52xx_psc_raw_rx_rdy, @@ -273,14 +292,32 @@ static struct psc_ops mpc52xx_psc_ops = { .cw_disable_ints = mpc52xx_psc_cw_disable_ints, .cw_restore_ints = mpc52xx_psc_cw_restore_ints, .getuartclk = mpc52xx_getuartclk, + .get_irq = mpc52xx_psc_get_irq, + .handle_irq = mpc52xx_psc_handle_irq, }; #endif /* CONFIG_MPC52xx */ #ifdef CONFIG_PPC_MPC512x #define FIFO_512x(port) ((struct mpc512x_psc_fifo __iomem *)(PSC(port)+1)) + +/* PSC FIFO Controller for mpc512x */ +struct psc_fifoc { + u32 fifoc_cmd; + u32 fifoc_int; + u32 fifoc_dma; + u32 fifoc_axe; + u32 fifoc_debug; +}; + +static struct psc_fifoc __iomem *psc_fifoc; +static unsigned int psc_fifoc_irq; + static void mpc512x_psc_fifo_init(struct uart_port *port) { + /* /32 prescaler */ + out_be16(&PSC(port)->mpc52xx_psc_clock_select, 0xdd00); + out_be32(&FIFO_512x(port)->txcmd, MPC512x_PSC_FIFO_RESET_SLICE); out_be32(&FIFO_512x(port)->txcmd, MPC512x_PSC_FIFO_ENABLE_SLICE); out_be32(&FIFO_512x(port)->txalarm, 1); @@ -393,6 +430,160 @@ static unsigned long mpc512x_getuartclk(void *p) return mpc5xxx_get_bus_frequency(p); } +#define DEFAULT_FIFO_SIZE 16 + +static unsigned int __init get_fifo_size(struct device_node *np, + char *fifo_name) +{ + const unsigned int *fp; + + fp = of_get_property(np, fifo_name, NULL); + if (fp) + return *fp; + + pr_warning("no %s property in %s node, defaulting to %d\n", + fifo_name, np->full_name, DEFAULT_FIFO_SIZE); + + return DEFAULT_FIFO_SIZE; +} + +#define FIFOC(_base) ((struct mpc512x_psc_fifo __iomem *) \ + ((u32)(_base) + sizeof(struct mpc52xx_psc))) + +/* Init PSC FIFO Controller */ +static int __init mpc512x_psc_fifoc_init(void) +{ + struct device_node *np; + void __iomem *psc; + unsigned int tx_fifo_size; + unsigned int rx_fifo_size; + int fifobase = 0; /* current fifo address in 32 bit words */ + + np = of_find_compatible_node(NULL, NULL, + "fsl,mpc5121-psc-fifo"); + if (!np) { + pr_err("%s: Can't find FIFOC node\n", __func__); + return -ENODEV; + } + + psc_fifoc = of_iomap(np, 0); + if (!psc_fifoc) { + pr_err("%s: Can't map FIFOC\n", __func__); + return -ENODEV; + } + + psc_fifoc_irq = irq_of_parse_and_map(np, 0); + of_node_put(np); + if (psc_fifoc_irq == NO_IRQ) { + pr_err("%s: Can't get FIFOC irq\n", __func__); + iounmap(psc_fifoc); + return -ENODEV; + } + + for_each_compatible_node(np, NULL, "fsl,mpc5121-psc-uart") { + tx_fifo_size = get_fifo_size(np, "fsl,tx-fifo-size"); + rx_fifo_size = get_fifo_size(np, "fsl,rx-fifo-size"); + + /* size in register is in 4 byte units */ + tx_fifo_size /= 4; + rx_fifo_size /= 4; + if (!tx_fifo_size) + tx_fifo_size = 1; + if (!rx_fifo_size) + rx_fifo_size = 1; + + psc = of_iomap(np, 0); + if (!psc) { + pr_err("%s: Can't map %s device\n", + __func__, np->full_name); + continue; + } + + /* FIFO space is 4KiB, check if requested size is available */ + if ((fifobase + tx_fifo_size + rx_fifo_size) > 0x1000) { + pr_err("%s: no fifo space available for %s\n", + __func__, np->full_name); + iounmap(psc); + /* + * chances are that another device requests less + * fifo space, so we continue. + */ + continue; + } + /* set tx and rx fifo size registers */ + out_be32(&FIFOC(psc)->txsz, (fifobase << 16) | tx_fifo_size); + fifobase += tx_fifo_size; + out_be32(&FIFOC(psc)->rxsz, (fifobase << 16) | rx_fifo_size); + fifobase += rx_fifo_size; + + /* reset and enable the slices */ + out_be32(&FIFOC(psc)->txcmd, 0x80); + out_be32(&FIFOC(psc)->txcmd, 0x01); + out_be32(&FIFOC(psc)->rxcmd, 0x80); + out_be32(&FIFOC(psc)->rxcmd, 0x01); + + iounmap(psc); + } + + return 0; +} + +static void __exit mpc512x_psc_fifoc_uninit(void) +{ + iounmap(psc_fifoc); +} + +/* 512x specific interrupt handler. The caller holds the port lock */ +static irqreturn_t mpc512x_psc_handle_irq(struct uart_port *port) +{ + unsigned long fifoc_int; + int psc_num; + + /* Read pending PSC FIFOC interrupts */ + fifoc_int = in_be32(&psc_fifoc->fifoc_int); + + /* Check if it is an interrupt for this port */ + psc_num = (port->mapbase & 0xf00) >> 8; + if (test_bit(psc_num, &fifoc_int) || + test_bit(psc_num + 16, &fifoc_int)) + return mpc5xxx_uart_process_int(port); + + return IRQ_NONE; +} + +static int mpc512x_psc_clock(struct uart_port *port, int enable) +{ + struct clk *psc_clk; + int psc_num; + char clk_name[10]; + + if (uart_console(port)) + return 0; + + psc_num = (port->mapbase & 0xf00) >> 8; + snprintf(clk_name, sizeof(clk_name), "psc%d_clk", psc_num); + psc_clk = clk_get(port->dev, clk_name); + if (IS_ERR(psc_clk)) { + dev_err(port->dev, "Failed to get PSC clock entry!\n"); + return -ENODEV; + } + + dev_dbg(port->dev, "%s %sable\n", clk_name, enable ? "en" : "dis"); + + if (enable) + clk_enable(psc_clk); + else + clk_disable(psc_clk); + + return 0; +} + +static void mpc512x_psc_get_irq(struct uart_port *port, struct device_node *np) +{ + port->irqflags = IRQF_SHARED; + port->irq = psc_fifoc_irq; +} + static struct psc_ops mpc512x_psc_ops = { .fifo_init = mpc512x_psc_fifo_init, .raw_rx_rdy = mpc512x_psc_raw_rx_rdy, @@ -410,6 +601,11 @@ static struct psc_ops mpc512x_psc_ops = { .cw_disable_ints = mpc512x_psc_cw_disable_ints, .cw_restore_ints = mpc512x_psc_cw_restore_ints, .getuartclk = mpc512x_getuartclk, + .clock = mpc512x_psc_clock, + .fifoc_init = mpc512x_psc_fifoc_init, + .fifoc_uninit = mpc512x_psc_fifoc_uninit, + .get_irq = mpc512x_psc_get_irq, + .handle_irq = mpc512x_psc_handle_irq, }; #endif @@ -519,10 +715,15 @@ mpc52xx_uart_startup(struct uart_port *port) struct mpc52xx_psc __iomem *psc = PSC(port); int ret; + if (psc_ops->clock) { + ret = psc_ops->clock(port, 1); + if (ret) + return ret; + } + /* Request IRQ */ ret = request_irq(port->irq, mpc52xx_uart_int, - IRQF_DISABLED | IRQF_SAMPLE_RANDOM, - "mpc52xx_psc_uart", port); + port->irqflags, "mpc52xx_psc_uart", port); if (ret) return ret; @@ -553,6 +754,9 @@ mpc52xx_uart_shutdown(struct uart_port *port) port->read_status_mask = 0; out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask); + if (psc_ops->clock) + psc_ops->clock(port, 0); + /* Release interrupt */ free_irq(port->irq, port); } @@ -851,15 +1055,12 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port) } static irqreturn_t -mpc52xx_uart_int(int irq, void *dev_id) +mpc5xxx_uart_process_int(struct uart_port *port) { - struct uart_port *port = dev_id; unsigned long pass = ISR_PASS_LIMIT; unsigned int keepgoing; u8 status; - spin_lock(&port->lock); - /* While we have stuff to do, we continue */ do { /* If we don't find anything to do, we stop */ @@ -886,11 +1087,23 @@ mpc52xx_uart_int(int irq, void *dev_id) } while (keepgoing); - spin_unlock(&port->lock); - return IRQ_HANDLED; } +static irqreturn_t +mpc52xx_uart_int(int irq, void *dev_id) +{ + struct uart_port *port = dev_id; + irqreturn_t ret; + + spin_lock(&port->lock); + + ret = psc_ops->handle_irq(port); + + spin_unlock(&port->lock); + + return ret; +} /* ======================================================================== */ /* Console ( if applicable ) */ @@ -1152,7 +1365,7 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match) return -EINVAL; } - port->irq = irq_of_parse_and_map(op->node, 0); + psc_ops->get_irq(port, op->node); if (port->irq == NO_IRQ) { dev_dbg(&op->dev, "Could not get irq\n"); return -EINVAL; @@ -1163,10 +1376,8 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match) /* Add the port to the uart sub-system */ ret = uart_add_one_port(&mpc52xx_uart_driver, port); - if (ret) { - irq_dispose_mapping(port->irq); + if (ret) return ret; - } dev_set_drvdata(&op->dev, (void *)port); return 0; @@ -1178,10 +1389,8 @@ mpc52xx_uart_of_remove(struct of_device *op) struct uart_port *port = dev_get_drvdata(&op->dev); dev_set_drvdata(&op->dev, NULL); - if (port) { + if (port) uart_remove_one_port(&mpc52xx_uart_driver, port); - irq_dispose_mapping(port->irq); - } return 0; } @@ -1288,6 +1497,15 @@ mpc52xx_uart_init(void) mpc52xx_uart_of_enumerate(); + /* + * Map the PSC FIFO Controller and init if on MPC512x. + */ + if (psc_ops->fifoc_init) { + ret = psc_ops->fifoc_init(); + if (ret) + return ret; + } + ret = of_register_platform_driver(&mpc52xx_uart_of_driver); if (ret) { printk(KERN_ERR "%s: of_register_platform_driver failed (%i)\n", @@ -1302,6 +1520,9 @@ mpc52xx_uart_init(void) static void __exit mpc52xx_uart_exit(void) { + if (psc_ops->fifoc_uninit) + psc_ops->fifoc_uninit(); + of_unregister_platform_driver(&mpc52xx_uart_of_driver); uart_unregister_driver(&mpc52xx_uart_driver); } diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index 95421fa3b304..e91db4b38012 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -696,11 +696,11 @@ static int serial_config(struct pcmcia_device * link) info->multi = info->quirk->multi; if (info->multi > 1) - multi_config(link); + i = multi_config(link); else - simple_config(link); + i = simple_config(link); - if (info->ndev == 0) + if (i || info->ndev == 0) goto failed; /* @@ -715,6 +715,7 @@ static int serial_config(struct pcmcia_device * link) return 0; failed: + dev_warn(&link->dev, "serial_cs: failed to initialize\n"); serial_remove(link); return -ENODEV; } diff --git a/drivers/spi/au1550_spi.c b/drivers/spi/au1550_spi.c index cfd5ff9508fa..ba8ac4f599d3 100644 --- a/drivers/spi/au1550_spi.c +++ b/drivers/spi/au1550_spi.c @@ -412,11 +412,13 @@ static int au1550_spi_dma_txrxb(struct spi_device *spi, struct spi_transfer *t) } /* put buffers on the ring */ - res = au1xxx_dbdma_put_dest(hw->dma_rx_ch, hw->rx, t->len); + res = au1xxx_dbdma_put_dest(hw->dma_rx_ch, virt_to_phys(hw->rx), + t->len, DDMA_FLAGS_IE); if (!res) dev_err(hw->dev, "rx dma put dest error\n"); - res = au1xxx_dbdma_put_source(hw->dma_tx_ch, (void *)hw->tx, t->len); + res = au1xxx_dbdma_put_source(hw->dma_tx_ch, virt_to_phys(hw->tx), + t->len, DDMA_FLAGS_IE); if (!res) dev_err(hw->dev, "tx dma put source error\n"); diff --git a/drivers/staging/octeon/Makefile b/drivers/staging/octeon/Makefile index c0a583cc2227..87447c102fa0 100644 --- a/drivers/staging/octeon/Makefile +++ b/drivers/staging/octeon/Makefile @@ -14,7 +14,6 @@ obj-${CONFIG_OCTEON_ETHERNET} := octeon-ethernet.o octeon-ethernet-objs := ethernet.o octeon-ethernet-objs += ethernet-mdio.o octeon-ethernet-objs += ethernet-mem.o -octeon-ethernet-objs += ethernet-proc.o octeon-ethernet-objs += ethernet-rgmii.o octeon-ethernet-objs += ethernet-rx.o octeon-ethernet-objs += ethernet-sgmii.o diff --git a/drivers/staging/octeon/ethernet-defines.h b/drivers/staging/octeon/ethernet-defines.h index f13131b03c33..6a2cd50a17df 100644 --- a/drivers/staging/octeon/ethernet-defines.h +++ b/drivers/staging/octeon/ethernet-defines.h @@ -41,17 +41,10 @@ * Tells the driver to populate the packet buffers with kernel skbuffs. * This allows the driver to receive packets without copying them. It also * means that 32bit userspace can't access the packet buffers. - * USE_32BIT_SHARED - * This define tells the driver to allocate memory for buffers from the - * 32bit sahred region instead of the kernel memory space. * USE_HW_TCPUDP_CHECKSUM * Controls if the Octeon TCP/UDP checksum engine is used for packet * output. If this is zero, the kernel will perform the checksum in * software. - * USE_MULTICORE_RECEIVE - * Process receive interrupts on multiple cores. This spreads the network - * load across the first 8 processors. If ths is zero, only one core - * processes incomming packets. * USE_ASYNC_IOBDMA * Use asynchronous IO access to hardware. This uses Octeon's asynchronous * IOBDMAs to issue IO accesses without stalling. Set this to zero @@ -75,29 +68,15 @@ #define CONFIG_CAVIUM_RESERVE32 0 #endif -#if CONFIG_CAVIUM_RESERVE32 -#define USE_32BIT_SHARED 1 -#define USE_SKBUFFS_IN_HW 0 -#define REUSE_SKBUFFS_WITHOUT_FREE 0 -#else -#define USE_32BIT_SHARED 0 #define USE_SKBUFFS_IN_HW 1 #ifdef CONFIG_NETFILTER #define REUSE_SKBUFFS_WITHOUT_FREE 0 #else #define REUSE_SKBUFFS_WITHOUT_FREE 1 #endif -#endif - -/* Max interrupts per second per core */ -#define INTERRUPT_LIMIT 10000 -/* Don't limit the number of interrupts */ -/*#define INTERRUPT_LIMIT 0 */ #define USE_HW_TCPUDP_CHECKSUM 1 -#define USE_MULTICORE_RECEIVE 1 - /* Enable Random Early Dropping under load */ #define USE_RED 1 #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) @@ -115,21 +94,12 @@ /* Use this to not have FPA frees control L2 */ /*#define DONT_WRITEBACK(x) 0 */ -/* Maximum number of packets to process per interrupt. */ -#define MAX_RX_PACKETS 120 /* Maximum number of SKBs to try to free per xmit packet. */ -#define MAX_SKB_TO_FREE 10 #define MAX_OUT_QUEUE_DEPTH 1000 -#ifndef CONFIG_SMP -#undef USE_MULTICORE_RECEIVE -#define USE_MULTICORE_RECEIVE 0 -#endif - -#define IP_PROTOCOL_TCP 6 -#define IP_PROTOCOL_UDP 0x11 +#define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) +#define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) -#define FAU_NUM_PACKET_BUFFERS_TO_FREE (CVMX_FAU_REG_END - sizeof(uint32_t)) #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) diff --git a/drivers/staging/octeon/ethernet-mdio.c b/drivers/staging/octeon/ethernet-mdio.c index 05a5cc0f43ed..7e0be8d00dc3 100644 --- a/drivers/staging/octeon/ethernet-mdio.c +++ b/drivers/staging/octeon/ethernet-mdio.c @@ -96,11 +96,11 @@ const struct ethtool_ops cvm_oct_ethtool_ops = { }; /** - * IOCTL support for PHY control - * + * cvm_oct_ioctl - IOCTL support for PHY control * @dev: Device to change * @rq: the request * @cmd: the command + * * Returns Zero on success */ int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) @@ -153,7 +153,7 @@ static void cvm_oct_adjust_link(struct net_device *dev) /** - * Setup the PHY + * cvm_oct_phy_setup_device - setup the PHY * * @dev: Device to setup * diff --git a/drivers/staging/octeon/ethernet-mdio.h b/drivers/staging/octeon/ethernet-mdio.h index 55d0614a7cd9..a417d4fce12c 100644 --- a/drivers/staging/octeon/ethernet-mdio.h +++ b/drivers/staging/octeon/ethernet-mdio.h @@ -32,7 +32,6 @@ #include <linux/ip.h> #include <linux/string.h> #include <linux/ethtool.h> -#include <linux/mii.h> #include <linux/seq_file.h> #include <linux/proc_fs.h> #include <net/dst.h> diff --git a/drivers/staging/octeon/ethernet-mem.c b/drivers/staging/octeon/ethernet-mem.c index b595903e2af1..00cc91df6b46 100644 --- a/drivers/staging/octeon/ethernet-mem.c +++ b/drivers/staging/octeon/ethernet-mem.c @@ -4,7 +4,7 @@ * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * - * Copyright (c) 2003-2007 Cavium Networks + * Copyright (c) 2003-2010 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as @@ -26,8 +26,6 @@ **********************************************************************/ #include <linux/kernel.h> #include <linux/netdevice.h> -#include <linux/mii.h> -#include <net/dst.h> #include <asm/octeon/octeon.h> @@ -36,18 +34,19 @@ #include "cvmx-fpa.h" /** - * Fill the supplied hardware pool with skbuffs - * + * cvm_oct_fill_hw_skbuff - fill the supplied hardware pool with skbuffs * @pool: Pool to allocate an skbuff for * @size: Size of the buffer needed for the pool * @elements: Number of buffers to allocate + * + * Returns the actual number of buffers allocated. */ static int cvm_oct_fill_hw_skbuff(int pool, int size, int elements) { int freed = elements; while (freed) { - struct sk_buff *skb = dev_alloc_skb(size + 128); + struct sk_buff *skb = dev_alloc_skb(size + 256); if (unlikely(skb == NULL)) { pr_warning ("Failed to allocate skb for hardware pool %d\n", @@ -55,7 +54,7 @@ static int cvm_oct_fill_hw_skbuff(int pool, int size, int elements) break; } - skb_reserve(skb, 128 - (((unsigned long)skb->data) & 0x7f)); + skb_reserve(skb, 256 - (((unsigned long)skb->data) & 0x7f)); *(struct sk_buff **)(skb->data - sizeof(void *)) = skb; cvmx_fpa_free(skb->data, pool, DONT_WRITEBACK(size / 128)); freed--; @@ -64,8 +63,7 @@ static int cvm_oct_fill_hw_skbuff(int pool, int size, int elements) } /** - * Free the supplied hardware pool of skbuffs - * + * cvm_oct_free_hw_skbuff- free hardware pool skbuffs * @pool: Pool to allocate an skbuff for * @size: Size of the buffer needed for the pool * @elements: Number of buffers to allocate @@ -93,96 +91,76 @@ static void cvm_oct_free_hw_skbuff(int pool, int size, int elements) } /** - * This function fills a hardware pool with memory. Depending - * on the config defines, this memory might come from the - * kernel or global 32bit memory allocated with - * cvmx_bootmem_alloc. - * + * cvm_oct_fill_hw_memory - fill a hardware pool with memory. * @pool: Pool to populate * @size: Size of each buffer in the pool * @elements: Number of buffers to allocate + * + * Returns the actual number of buffers allocated. */ static int cvm_oct_fill_hw_memory(int pool, int size, int elements) { char *memory; + char *fpa; int freed = elements; - if (USE_32BIT_SHARED) { - extern uint64_t octeon_reserve32_memory; - - memory = - cvmx_bootmem_alloc_range(elements * size, 128, - octeon_reserve32_memory, - octeon_reserve32_memory + - (CONFIG_CAVIUM_RESERVE32 << 20) - - 1); - if (memory == NULL) - panic("Unable to allocate %u bytes for FPA pool %d\n", - elements * size, pool); - - pr_notice("Memory range %p - %p reserved for " - "hardware\n", memory, - memory + elements * size - 1); - - while (freed) { - cvmx_fpa_free(memory, pool, 0); - memory += size; - freed--; - } - } else { - while (freed) { - /* We need to force alignment to 128 bytes here */ - memory = kmalloc(size + 127, GFP_ATOMIC); - if (unlikely(memory == NULL)) { - pr_warning("Unable to allocate %u bytes for " - "FPA pool %d\n", - elements * size, pool); - break; - } - memory = (char *)(((unsigned long)memory + 127) & -128); - cvmx_fpa_free(memory, pool, 0); - freed--; + while (freed) { + /* + * FPA memory must be 128 byte aligned. Since we are + * aligning we need to save the original pointer so we + * can feed it to kfree when the memory is returned to + * the kernel. + * + * We allocate an extra 256 bytes to allow for + * alignment and space for the original pointer saved + * just before the block. + */ + memory = kmalloc(size + 256, GFP_ATOMIC); + if (unlikely(memory == NULL)) { + pr_warning("Unable to allocate %u bytes for FPA pool %d\n", + elements * size, pool); + break; } + fpa = (char *)(((unsigned long)memory + 256) & ~0x7fUL); + *((char **)fpa - 1) = memory; + cvmx_fpa_free(fpa, pool, 0); + freed--; } return elements - freed; } /** - * Free memory previously allocated with cvm_oct_fill_hw_memory - * + * cvm_oct_free_hw_memory - Free memory allocated by cvm_oct_fill_hw_memory * @pool: FPA pool to free * @size: Size of each buffer in the pool * @elements: Number of buffers that should be in the pool */ static void cvm_oct_free_hw_memory(int pool, int size, int elements) { - if (USE_32BIT_SHARED) { - pr_warning("Warning: 32 shared memory is not freeable\n"); - } else { - char *memory; - do { - memory = cvmx_fpa_alloc(pool); - if (memory) { - elements--; - kfree(phys_to_virt(cvmx_ptr_to_phys(memory))); - } - } while (memory); + char *memory; + char *fpa; + do { + fpa = cvmx_fpa_alloc(pool); + if (fpa) { + elements--; + fpa = (char *)phys_to_virt(cvmx_ptr_to_phys(fpa)); + memory = *((char **)fpa - 1); + kfree(memory); + } + } while (fpa); - if (elements < 0) - pr_warning("Freeing of pool %u had too many " - "buffers (%d)\n", - pool, elements); - else if (elements > 0) - pr_warning("Warning: Freeing of pool %u is " - "missing %d buffers\n", - pool, elements); - } + if (elements < 0) + pr_warning("Freeing of pool %u had too many buffers (%d)\n", + pool, elements); + else if (elements > 0) + pr_warning("Warning: Freeing of pool %u is missing %d buffers\n", + pool, elements); } int cvm_oct_mem_fill_fpa(int pool, int size, int elements) { int freed; - if (USE_SKBUFFS_IN_HW) + if (USE_SKBUFFS_IN_HW && pool == CVMX_FPA_PACKET_POOL) freed = cvm_oct_fill_hw_skbuff(pool, size, elements); else freed = cvm_oct_fill_hw_memory(pool, size, elements); @@ -191,7 +169,7 @@ int cvm_oct_mem_fill_fpa(int pool, int size, int elements) void cvm_oct_mem_empty_fpa(int pool, int size, int elements) { - if (USE_SKBUFFS_IN_HW) + if (USE_SKBUFFS_IN_HW && pool == CVMX_FPA_PACKET_POOL) cvm_oct_free_hw_skbuff(pool, size, elements); else cvm_oct_free_hw_memory(pool, size, elements); diff --git a/drivers/staging/octeon/ethernet-proc.c b/drivers/staging/octeon/ethernet-proc.c deleted file mode 100644 index 16308d484d3b..000000000000 --- a/drivers/staging/octeon/ethernet-proc.c +++ /dev/null @@ -1,144 +0,0 @@ -/********************************************************************** - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK - * - * Copyright (c) 2003-2007 Cavium Networks - * - * This file is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, Version 2, as - * published by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, but - * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or - * NONINFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this file; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * or visit http://www.gnu.org/licenses/. - * - * This file may also be available under a different license from Cavium. - * Contact Cavium Networks for more information -**********************************************************************/ -#include <linux/kernel.h> -#include <linux/seq_file.h> -#include <linux/proc_fs.h> -#include <net/dst.h> - -#include <asm/octeon/octeon.h> - -#include "octeon-ethernet.h" -#include "ethernet-defines.h" - -#include "cvmx-helper.h" -#include "cvmx-pip.h" - -/** - * User is reading /proc/octeon_ethernet_stats - * - * @m: - * @v: - * Returns - */ -static int cvm_oct_stats_show(struct seq_file *m, void *v) -{ - struct octeon_ethernet *priv; - int port; - - for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { - - if (cvm_oct_device[port]) { - priv = netdev_priv(cvm_oct_device[port]); - - seq_printf(m, "\nOcteon Port %d (%s)\n", port, - cvm_oct_device[port]->name); - seq_printf(m, - "rx_packets: %12lu\t" - "tx_packets: %12lu\n", - priv->stats.rx_packets, - priv->stats.tx_packets); - seq_printf(m, - "rx_bytes: %12lu\t" - "tx_bytes: %12lu\n", - priv->stats.rx_bytes, priv->stats.tx_bytes); - seq_printf(m, - "rx_errors: %12lu\t" - "tx_errors: %12lu\n", - priv->stats.rx_errors, - priv->stats.tx_errors); - seq_printf(m, - "rx_dropped: %12lu\t" - "tx_dropped: %12lu\n", - priv->stats.rx_dropped, - priv->stats.tx_dropped); - seq_printf(m, - "rx_length_errors: %12lu\t" - "tx_aborted_errors: %12lu\n", - priv->stats.rx_length_errors, - priv->stats.tx_aborted_errors); - seq_printf(m, - "rx_over_errors: %12lu\t" - "tx_carrier_errors: %12lu\n", - priv->stats.rx_over_errors, - priv->stats.tx_carrier_errors); - seq_printf(m, - "rx_crc_errors: %12lu\t" - "tx_fifo_errors: %12lu\n", - priv->stats.rx_crc_errors, - priv->stats.tx_fifo_errors); - seq_printf(m, - "rx_frame_errors: %12lu\t" - "tx_heartbeat_errors: %12lu\n", - priv->stats.rx_frame_errors, - priv->stats.tx_heartbeat_errors); - seq_printf(m, - "rx_fifo_errors: %12lu\t" - "tx_window_errors: %12lu\n", - priv->stats.rx_fifo_errors, - priv->stats.tx_window_errors); - seq_printf(m, - "rx_missed_errors: %12lu\t" - "multicast: %12lu\n", - priv->stats.rx_missed_errors, - priv->stats.multicast); - } - } - - return 0; -} - -/** - * /proc/octeon_ethernet_stats was openned. Use the single_open iterator - * - * @inode: - * @file: - * Returns - */ -static int cvm_oct_stats_open(struct inode *inode, struct file *file) -{ - return single_open(file, cvm_oct_stats_show, NULL); -} - -static const struct file_operations cvm_oct_stats_operations = { - .open = cvm_oct_stats_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -void cvm_oct_proc_initialize(void) -{ - struct proc_dir_entry *entry = - create_proc_entry("octeon_ethernet_stats", 0, NULL); - if (entry) - entry->proc_fops = &cvm_oct_stats_operations; -} - -void cvm_oct_proc_shutdown(void) -{ - remove_proc_entry("octeon_ethernet_stats", NULL); -} diff --git a/drivers/staging/octeon/ethernet-proc.h b/drivers/staging/octeon/ethernet-proc.h deleted file mode 100644 index 82c7d9f78bc4..000000000000 --- a/drivers/staging/octeon/ethernet-proc.h +++ /dev/null @@ -1,29 +0,0 @@ -/********************************************************************* - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK - * - * Copyright (c) 2003-2007 Cavium Networks - * - * This file is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, Version 2, as - * published by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, but - * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or - * NONINFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this file; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * or visit http://www.gnu.org/licenses/. - * - * This file may also be available under a different license from Cavium. - * Contact Cavium Networks for more information -*********************************************************************/ - -void cvm_oct_proc_initialize(void); -void cvm_oct_proc_shutdown(void); diff --git a/drivers/staging/octeon/ethernet-rgmii.c b/drivers/staging/octeon/ethernet-rgmii.c index 3820f1ec11d1..a0d4d4b98bdc 100644 --- a/drivers/staging/octeon/ethernet-rgmii.c +++ b/drivers/staging/octeon/ethernet-rgmii.c @@ -26,7 +26,7 @@ **********************************************************************/ #include <linux/kernel.h> #include <linux/netdevice.h> -#include <linux/mii.h> +#include <linux/phy.h> #include <net/dst.h> #include <asm/octeon/octeon.h> @@ -48,14 +48,20 @@ static int number_rgmii_ports; static void cvm_oct_rgmii_poll(struct net_device *dev) { struct octeon_ethernet *priv = netdev_priv(dev); - unsigned long flags; + unsigned long flags = 0; cvmx_helper_link_info_t link_info; + int use_global_register_lock = (priv->phydev == NULL); - /* - * Take the global register lock since we are going to touch - * registers that affect more than one port. - */ - spin_lock_irqsave(&global_register_lock, flags); + BUG_ON(in_interrupt()); + if (use_global_register_lock) { + /* + * Take the global register lock since we are going to + * touch registers that affect more than one port. + */ + spin_lock_irqsave(&global_register_lock, flags); + } else { + mutex_lock(&priv->phydev->bus->mdio_lock); + } link_info = cvmx_helper_link_get(priv->port); if (link_info.u64 == priv->link_info) { @@ -115,7 +121,11 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) dev->name); } } - spin_unlock_irqrestore(&global_register_lock, flags); + + if (use_global_register_lock) + spin_unlock_irqrestore(&global_register_lock, flags); + else + mutex_unlock(&priv->phydev->bus->mdio_lock); return; } @@ -151,7 +161,12 @@ static void cvm_oct_rgmii_poll(struct net_device *dev) link_info = cvmx_helper_link_autoconf(priv->port); priv->link_info = link_info.u64; } - spin_unlock_irqrestore(&global_register_lock, flags); + + if (use_global_register_lock) + spin_unlock_irqrestore(&global_register_lock, flags); + else { + mutex_unlock(&priv->phydev->bus->mdio_lock); + } if (priv->phydev == NULL) { /* Tell core. */ @@ -213,8 +228,11 @@ static irqreturn_t cvm_oct_rgmii_rml_interrupt(int cpl, void *dev_id) struct net_device *dev = cvm_oct_device[cvmx_helper_get_ipd_port (interface, index)]; - if (dev) - cvm_oct_rgmii_poll(dev); + struct octeon_ethernet *priv = netdev_priv(dev); + + if (dev && !atomic_read(&cvm_oct_poll_queue_stopping)) + queue_work(cvm_oct_poll_queue, &priv->port_work); + gmx_rx_int_reg.u64 = 0; gmx_rx_int_reg.s.phy_dupx = 1; gmx_rx_int_reg.s.phy_link = 1; @@ -252,8 +270,11 @@ static irqreturn_t cvm_oct_rgmii_rml_interrupt(int cpl, void *dev_id) struct net_device *dev = cvm_oct_device[cvmx_helper_get_ipd_port (interface, index)]; - if (dev) - cvm_oct_rgmii_poll(dev); + struct octeon_ethernet *priv = netdev_priv(dev); + + if (dev && !atomic_read(&cvm_oct_poll_queue_stopping)) + queue_work(cvm_oct_poll_queue, &priv->port_work); + gmx_rx_int_reg.u64 = 0; gmx_rx_int_reg.s.phy_dupx = 1; gmx_rx_int_reg.s.phy_link = 1; @@ -302,6 +323,12 @@ int cvm_oct_rgmii_stop(struct net_device *dev) return 0; } +static void cvm_oct_rgmii_immediate_poll(struct work_struct *work) +{ + struct octeon_ethernet *priv = container_of(work, struct octeon_ethernet, port_work); + cvm_oct_rgmii_poll(cvm_oct_device[priv->port]); +} + int cvm_oct_rgmii_init(struct net_device *dev) { struct octeon_ethernet *priv = netdev_priv(dev); @@ -309,7 +336,7 @@ int cvm_oct_rgmii_init(struct net_device *dev) cvm_oct_common_init(dev); dev->netdev_ops->ndo_stop(dev); - + INIT_WORK(&priv->port_work, cvm_oct_rgmii_immediate_poll); /* * Due to GMX errata in CN3XXX series chips, it is necessary * to take the link down immediately when the PHY changes @@ -397,4 +424,5 @@ void cvm_oct_rgmii_uninit(struct net_device *dev) number_rgmii_ports--; if (number_rgmii_ports == 0) free_irq(OCTEON_IRQ_RML, &number_rgmii_ports); + cancel_work_sync(&priv->port_work); } diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c index 1b237b7e689d..cb38f9eb2cc0 100644 --- a/drivers/staging/octeon/ethernet-rx.c +++ b/drivers/staging/octeon/ethernet-rx.c @@ -4,7 +4,7 @@ * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * - * Copyright (c) 2003-2007 Cavium Networks + * Copyright (c) 2003-2010 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as @@ -27,16 +27,14 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/cache.h> +#include <linux/cpumask.h> #include <linux/netdevice.h> #include <linux/init.h> #include <linux/etherdevice.h> #include <linux/ip.h> #include <linux/string.h> #include <linux/prefetch.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/seq_file.h> -#include <linux/proc_fs.h> +#include <linux/smp.h> #include <net/dst.h> #ifdef CONFIG_XFRM #include <linux/xfrm.h> @@ -48,8 +46,9 @@ #include <asm/octeon/octeon.h> #include "ethernet-defines.h" -#include "octeon-ethernet.h" #include "ethernet-mem.h" +#include "ethernet-rx.h" +#include "octeon-ethernet.h" #include "ethernet-util.h" #include "cvmx-helper.h" @@ -61,62 +60,88 @@ #include "cvmx-gmxx-defs.h" -struct cvm_tasklet_wrapper { - struct tasklet_struct t; -}; +struct cvm_napi_wrapper { + struct napi_struct napi; +} ____cacheline_aligned_in_smp; -/* - * Aligning the tasklet_struct on cachline boundries seems to decrease - * throughput even though in theory it would reduce contantion on the - * cache lines containing the locks. - */ +static struct cvm_napi_wrapper cvm_oct_napi[NR_CPUS] __cacheline_aligned_in_smp; -static struct cvm_tasklet_wrapper cvm_oct_tasklet[NR_CPUS]; +struct cvm_oct_core_state { + int baseline_cores; + /* + * The number of additional cores that could be processing + * input packtes. + */ + atomic_t available_cores; + cpumask_t cpu_state; +} ____cacheline_aligned_in_smp; -/** - * Interrupt handler. The interrupt occurs whenever the POW - * transitions from 0->1 packets in our group. - * - * @cpl: - * @dev_id: - * @regs: - * Returns - */ -irqreturn_t cvm_oct_do_interrupt(int cpl, void *dev_id) +static struct cvm_oct_core_state core_state __cacheline_aligned_in_smp; + +static void cvm_oct_enable_napi(void *_) { - /* Acknowledge the interrupt */ - if (INTERRUPT_LIMIT) - cvmx_write_csr(CVMX_POW_WQ_INT, 1 << pow_receive_group); - else - cvmx_write_csr(CVMX_POW_WQ_INT, 0x10001 << pow_receive_group); - preempt_disable(); - tasklet_schedule(&cvm_oct_tasklet[smp_processor_id()].t); - preempt_enable(); - return IRQ_HANDLED; + int cpu = smp_processor_id(); + napi_schedule(&cvm_oct_napi[cpu].napi); +} + +static void cvm_oct_enable_one_cpu(void) +{ + int v; + int cpu; + + /* Check to see if more CPUs are available for receive processing... */ + v = atomic_sub_if_positive(1, &core_state.available_cores); + if (v < 0) + return; + + /* ... if a CPU is available, Turn on NAPI polling for that CPU. */ + for_each_online_cpu(cpu) { + if (!cpu_test_and_set(cpu, core_state.cpu_state)) { + v = smp_call_function_single(cpu, cvm_oct_enable_napi, + NULL, 0); + if (v) + panic("Can't enable NAPI."); + break; + } + } +} + +static void cvm_oct_no_more_work(void) +{ + int cpu = smp_processor_id(); + + /* + * CPU zero is special. It always has the irq enabled when + * waiting for incoming packets. + */ + if (cpu == 0) { + enable_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group); + return; + } + + cpu_clear(cpu, core_state.cpu_state); + atomic_add(1, &core_state.available_cores); } -#ifdef CONFIG_NET_POLL_CONTROLLER /** - * This is called when the kernel needs to manually poll the - * device. For Octeon, this is simply calling the interrupt - * handler. We actually poll all the devices, not just the - * one supplied. + * cvm_oct_do_interrupt - interrupt handler. + * + * The interrupt occurs whenever the POW has packets in our group. * - * @dev: Device to poll. Unused */ -void cvm_oct_poll_controller(struct net_device *dev) +static irqreturn_t cvm_oct_do_interrupt(int cpl, void *dev_id) { - preempt_disable(); - tasklet_schedule(&cvm_oct_tasklet[smp_processor_id()].t); - preempt_enable(); + /* Disable the IRQ and start napi_poll. */ + disable_irq_nosync(OCTEON_IRQ_WORKQ0 + pow_receive_group); + cvm_oct_enable_napi(NULL); + + return IRQ_HANDLED; } -#endif /** - * This is called on receive errors, and determines if the packet - * can be dropped early-on in cvm_oct_tasklet_rx(). - * + * cvm_oct_check_rcv_error - process receive errors * @work: Work queue entry pointing to the packet. + * * Returns Non-zero if the packet can be dropped, zero otherwise. */ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work) @@ -199,19 +224,20 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work) } /** - * Tasklet function that is scheduled on a core when an interrupt occurs. + * cvm_oct_napi_poll - the NAPI poll function. + * @napi: The NAPI instance, or null if called from cvm_oct_poll_controller + * @budget: Maximum number of packets to receive. * - * @unused: + * Returns the number of packets processed. */ -void cvm_oct_tasklet_rx(unsigned long unused) +static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) { - const int coreid = cvmx_get_core_num(); - uint64_t old_group_mask; - uint64_t old_scratch; - int rx_count = 0; - int number_to_free; - int num_freed; - int packet_not_copied; + const int coreid = cvmx_get_core_num(); + uint64_t old_group_mask; + uint64_t old_scratch; + int rx_count = 0; + int did_work_request = 0; + int packet_not_copied; /* Prefetch cvm_oct_device since we know we need it soon */ prefetch(cvm_oct_device); @@ -227,59 +253,63 @@ void cvm_oct_tasklet_rx(unsigned long unused) cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), (old_group_mask & ~0xFFFFull) | 1 << pow_receive_group); - if (USE_ASYNC_IOBDMA) + if (USE_ASYNC_IOBDMA) { cvmx_pow_work_request_async(CVMX_SCR_SCRATCH, CVMX_POW_NO_WAIT); + did_work_request = 1; + } - while (1) { + while (rx_count < budget) { struct sk_buff *skb = NULL; + struct sk_buff **pskb = NULL; int skb_in_hw; cvmx_wqe_t *work; - if (USE_ASYNC_IOBDMA) { + if (USE_ASYNC_IOBDMA && did_work_request) work = cvmx_pow_work_response_async(CVMX_SCR_SCRATCH); - } else { - if ((INTERRUPT_LIMIT == 0) - || likely(rx_count < MAX_RX_PACKETS)) - work = - cvmx_pow_work_request_sync - (CVMX_POW_NO_WAIT); - else - work = NULL; - } + else + work = cvmx_pow_work_request_sync(CVMX_POW_NO_WAIT); + prefetch(work); - if (work == NULL) + did_work_request = 0; + if (work == NULL) { + union cvmx_pow_wq_int wq_int; + wq_int.u64 = 0; + wq_int.s.iq_dis = 1 << pow_receive_group; + wq_int.s.wq_int = 1 << pow_receive_group; + cvmx_write_csr(CVMX_POW_WQ_INT, wq_int.u64); break; + } + pskb = (struct sk_buff **)(cvm_oct_get_buffer_ptr(work->packet_ptr) - sizeof(void *)); + prefetch(pskb); - /* - * Limit each core to processing MAX_RX_PACKETS - * packets without a break. This way the RX can't - * starve the TX task. - */ - if (USE_ASYNC_IOBDMA) { - - if ((INTERRUPT_LIMIT == 0) - || likely(rx_count < MAX_RX_PACKETS)) - cvmx_pow_work_request_async_nocheck - (CVMX_SCR_SCRATCH, CVMX_POW_NO_WAIT); - else { - cvmx_scratch_write64(CVMX_SCR_SCRATCH, - 0x8000000000000000ull); - cvmx_pow_tag_sw_null_nocheck(); - } + if (USE_ASYNC_IOBDMA && rx_count < (budget - 1)) { + cvmx_pow_work_request_async_nocheck(CVMX_SCR_SCRATCH, CVMX_POW_NO_WAIT); + did_work_request = 1; + } + + if (rx_count == 0) { + /* + * First time through, see if there is enough + * work waiting to merit waking another + * CPU. + */ + union cvmx_pow_wq_int_cntx counts; + int backlog; + int cores_in_use = core_state.baseline_cores - atomic_read(&core_state.available_cores); + counts.u64 = cvmx_read_csr(CVMX_POW_WQ_INT_CNTX(pow_receive_group)); + backlog = counts.s.iq_cnt + counts.s.ds_cnt; + if (backlog > budget * cores_in_use && napi != NULL) + cvm_oct_enable_one_cpu(); } skb_in_hw = USE_SKBUFFS_IN_HW && work->word2.s.bufs == 1; if (likely(skb_in_hw)) { - skb = - *(struct sk_buff - **)(cvm_oct_get_buffer_ptr(work->packet_ptr) - - sizeof(void *)); + skb = *pskb; prefetch(&skb->head); prefetch(&skb->len); } prefetch(cvm_oct_device[work->ipprt]); - rx_count++; /* Immediately throw away all packets with receive errors */ if (unlikely(work->word2.snoip.rcv_error)) { if (cvm_oct_check_rcv_error(work)) @@ -292,39 +322,27 @@ void cvm_oct_tasklet_rx(unsigned long unused) * buffer. */ if (likely(skb_in_hw)) { - /* - * This calculation was changed in case the - * skb header is using a different address - * aliasing type than the buffer. It doesn't - * make any differnece now, but the new one is - * more correct. - */ - skb->data = - skb->head + work->packet_ptr.s.addr - - cvmx_ptr_to_phys(skb->head); + skb->data = skb->head + work->packet_ptr.s.addr - cvmx_ptr_to_phys(skb->head); prefetch(skb->data); skb->len = work->len; skb_set_tail_pointer(skb, skb->len); packet_not_copied = 1; } else { - /* * We have to copy the packet. First allocate * an skbuff for it. */ skb = dev_alloc_skb(work->len); if (!skb) { - DEBUGPRINT("Port %d failed to allocate " - "skbuff, packet dropped\n", - work->ipprt); + DEBUGPRINT("Port %d failed to allocate skbuff, packet dropped\n", + work->ipprt); cvm_oct_free_work(work); continue; } /* * Check if we've received a packet that was - * entirely stored in the work entry. This is - * untested. + * entirely stored in the work entry. */ if (unlikely(work->word2.s.bufs == 0)) { uint8_t *ptr = work->packet_data; @@ -343,15 +361,13 @@ void cvm_oct_tasklet_rx(unsigned long unused) /* No packet buffers to free */ } else { int segments = work->word2.s.bufs; - union cvmx_buf_ptr segment_ptr = - work->packet_ptr; + union cvmx_buf_ptr segment_ptr = work->packet_ptr; int len = work->len; while (segments--) { union cvmx_buf_ptr next_ptr = - *(union cvmx_buf_ptr *) - cvmx_phys_to_ptr(segment_ptr.s. - addr - 8); + *(union cvmx_buf_ptr *)cvmx_phys_to_ptr(segment_ptr.s.addr - 8); + /* * Octeon Errata PKI-100: The segment size is * wrong. Until it is fixed, calculate the @@ -361,22 +377,18 @@ void cvm_oct_tasklet_rx(unsigned long unused) * one: int segment_size = * segment_ptr.s.size; */ - int segment_size = - CVMX_FPA_PACKET_POOL_SIZE - - (segment_ptr.s.addr - - (((segment_ptr.s.addr >> 7) - - segment_ptr.s.back) << 7)); - /* Don't copy more than what is left - in the packet */ + int segment_size = CVMX_FPA_PACKET_POOL_SIZE - + (segment_ptr.s.addr - (((segment_ptr.s.addr >> 7) - segment_ptr.s.back) << 7)); + /* + * Don't copy more than what + * is left in the packet. + */ if (segment_size > len) segment_size = len; /* Copy the data into the packet */ memcpy(skb_put(skb, segment_size), - cvmx_phys_to_ptr(segment_ptr.s. - addr), + cvmx_phys_to_ptr(segment_ptr.s.addr), segment_size); - /* Reduce the amount of bytes left - to copy */ len -= segment_size; segment_ptr = next_ptr; } @@ -389,16 +401,15 @@ void cvm_oct_tasklet_rx(unsigned long unused) struct net_device *dev = cvm_oct_device[work->ipprt]; struct octeon_ethernet *priv = netdev_priv(dev); - /* Only accept packets for devices - that are currently up */ + /* + * Only accept packets for devices that are + * currently up. + */ if (likely(dev->flags & IFF_UP)) { skb->protocol = eth_type_trans(skb, dev); skb->dev = dev; - if (unlikely - (work->word2.s.not_IP - || work->word2.s.IP_exc - || work->word2.s.L4_error)) + if (unlikely(work->word2.s.not_IP || work->word2.s.IP_exc || work->word2.s.L4_error)) skb->ip_summed = CHECKSUM_NONE; else skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -414,15 +425,13 @@ void cvm_oct_tasklet_rx(unsigned long unused) #endif } netif_receive_skb(skb); + rx_count++; } else { + /* Drop any packet received for a device that isn't up */ /* - * Drop any packet received for a - * device that isn't up. - */ - /* - DEBUGPRINT("%s: Device not up, packet dropped\n", - dev->name); - */ + DEBUGPRINT("%s: Device not up, packet dropped\n", + dev->name); + */ #ifdef CONFIG_64BIT atomic64_add(1, (atomic64_t *)&priv->stats.rx_dropped); #else @@ -435,9 +444,8 @@ void cvm_oct_tasklet_rx(unsigned long unused) * Drop any packet received for a device that * doesn't exist. */ - DEBUGPRINT("Port %d not controlled by Linux, packet " - "dropped\n", - work->ipprt); + DEBUGPRINT("Port %d not controlled by Linux, packet dropped\n", + work->ipprt); dev_kfree_skb_irq(skb); } /* @@ -459,47 +467,93 @@ void cvm_oct_tasklet_rx(unsigned long unused) cvm_oct_free_work(work); } } - /* Restore the original POW group mask */ cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), old_group_mask); if (USE_ASYNC_IOBDMA) { /* Restore the scratch area */ cvmx_scratch_write64(CVMX_SCR_SCRATCH, old_scratch); } + cvm_oct_rx_refill_pool(0); - if (USE_SKBUFFS_IN_HW) { - /* Refill the packet buffer pool */ - number_to_free = - cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); - - if (number_to_free > 0) { - cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, - -number_to_free); - num_freed = - cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, - CVMX_FPA_PACKET_POOL_SIZE, - number_to_free); - if (num_freed != number_to_free) { - cvmx_fau_atomic_add32 - (FAU_NUM_PACKET_BUFFERS_TO_FREE, - number_to_free - num_freed); - } - } + if (rx_count < budget && napi != NULL) { + /* No more work */ + napi_complete(napi); + cvm_oct_no_more_work(); } + return rx_count; } +#ifdef CONFIG_NET_POLL_CONTROLLER +/** + * cvm_oct_poll_controller - poll for receive packets + * device. + * + * @dev: Device to poll. Unused + */ +void cvm_oct_poll_controller(struct net_device *dev) +{ + cvm_oct_napi_poll(NULL, 16); +} +#endif + void cvm_oct_rx_initialize(void) { int i; - /* Initialize all of the tasklets */ - for (i = 0; i < NR_CPUS; i++) - tasklet_init(&cvm_oct_tasklet[i].t, cvm_oct_tasklet_rx, 0); + struct net_device *dev_for_napi = NULL; + union cvmx_pow_wq_int_thrx int_thr; + union cvmx_pow_wq_int_pc int_pc; + + for (i = 0; i < TOTAL_NUMBER_OF_PORTS; i++) { + if (cvm_oct_device[i]) { + dev_for_napi = cvm_oct_device[i]; + break; + } + } + + if (NULL == dev_for_napi) + panic("No net_devices were allocated."); + + if (max_rx_cpus > 1 && max_rx_cpus < num_online_cpus()) + atomic_set(&core_state.available_cores, max_rx_cpus); + else + atomic_set(&core_state.available_cores, num_online_cpus()); + core_state.baseline_cores = atomic_read(&core_state.available_cores); + + core_state.cpu_state = CPU_MASK_NONE; + for_each_possible_cpu(i) { + netif_napi_add(dev_for_napi, &cvm_oct_napi[i].napi, + cvm_oct_napi_poll, rx_napi_weight); + napi_enable(&cvm_oct_napi[i].napi); + } + /* Register an IRQ hander for to receive POW interrupts */ + i = request_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, + cvm_oct_do_interrupt, 0, "Ethernet", cvm_oct_device); + + if (i) + panic("Could not acquire Ethernet IRQ %d\n", + OCTEON_IRQ_WORKQ0 + pow_receive_group); + + disable_irq_nosync(OCTEON_IRQ_WORKQ0 + pow_receive_group); + + int_thr.u64 = 0; + int_thr.s.tc_en = 1; + int_thr.s.tc_thr = 1; + /* Enable POW interrupt when our port has at least one packet */ + cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), int_thr.u64); + + int_pc.u64 = 0; + int_pc.s.pc_thr = 5; + cvmx_write_csr(CVMX_POW_WQ_INT_PC, int_pc.u64); + + + /* Scheduld NAPI now. This will indirectly enable interrupts. */ + cvm_oct_enable_one_cpu(); } void cvm_oct_rx_shutdown(void) { int i; - /* Shutdown all of the tasklets */ - for (i = 0; i < NR_CPUS; i++) - tasklet_kill(&cvm_oct_tasklet[i].t); + /* Shutdown all of the NAPIs */ + for_each_possible_cpu(i) + netif_napi_del(&cvm_oct_napi[i].napi); } diff --git a/drivers/staging/octeon/ethernet-rx.h b/drivers/staging/octeon/ethernet-rx.h index a9b72b87a7a6..a0743b85d54e 100644 --- a/drivers/staging/octeon/ethernet-rx.h +++ b/drivers/staging/octeon/ethernet-rx.h @@ -24,10 +24,29 @@ * This file may also be available under a different license from Cavium. * Contact Cavium Networks for more information *********************************************************************/ +#include "cvmx-fau.h" -irqreturn_t cvm_oct_do_interrupt(int cpl, void *dev_id); void cvm_oct_poll_controller(struct net_device *dev); -void cvm_oct_tasklet_rx(unsigned long unused); - void cvm_oct_rx_initialize(void); void cvm_oct_rx_shutdown(void); + +static inline void cvm_oct_rx_refill_pool(int fill_threshold) +{ + int number_to_free; + int num_freed; + /* Refill the packet buffer pool */ + number_to_free = + cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + + if (number_to_free > fill_threshold) { + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, + -number_to_free); + num_freed = cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, + CVMX_FPA_PACKET_POOL_SIZE, + number_to_free); + if (num_freed != number_to_free) { + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, + number_to_free - num_freed); + } + } +} diff --git a/drivers/staging/octeon/ethernet-sgmii.c b/drivers/staging/octeon/ethernet-sgmii.c index 6061d01eca2d..2d8589eb461e 100644 --- a/drivers/staging/octeon/ethernet-sgmii.c +++ b/drivers/staging/octeon/ethernet-sgmii.c @@ -26,7 +26,6 @@ **********************************************************************/ #include <linux/kernel.h> #include <linux/netdevice.h> -#include <linux/mii.h> #include <net/dst.h> #include <asm/octeon/octeon.h> diff --git a/drivers/staging/octeon/ethernet-spi.c b/drivers/staging/octeon/ethernet-spi.c index 00dc0f4bad19..b58b8971f939 100644 --- a/drivers/staging/octeon/ethernet-spi.c +++ b/drivers/staging/octeon/ethernet-spi.c @@ -26,7 +26,6 @@ **********************************************************************/ #include <linux/kernel.h> #include <linux/netdevice.h> -#include <linux/mii.h> #include <net/dst.h> #include <asm/octeon/octeon.h> diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c index 535294105f65..afc2b734d554 100644 --- a/drivers/staging/octeon/ethernet-tx.c +++ b/drivers/staging/octeon/ethernet-tx.c @@ -4,7 +4,7 @@ * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * - * Copyright (c) 2003-2007 Cavium Networks + * Copyright (c) 2003-2010 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as @@ -31,10 +31,6 @@ #include <linux/etherdevice.h> #include <linux/ip.h> #include <linux/string.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/seq_file.h> -#include <linux/proc_fs.h> #include <net/dst.h> #ifdef CONFIG_XFRM #include <linux/xfrm.h> @@ -52,11 +48,14 @@ #include "cvmx-wqe.h" #include "cvmx-fau.h" +#include "cvmx-pip.h" #include "cvmx-pko.h" #include "cvmx-helper.h" #include "cvmx-gmxx-defs.h" +#define CVM_OCT_SKB_CB(skb) ((u64 *)((skb)->cb)) + /* * You can define GET_SKBUFF_QOS() to override how the skbuff output * function determines which output queue is used. The default @@ -68,12 +67,81 @@ #define GET_SKBUFF_QOS(skb) 0 #endif +static void cvm_oct_tx_do_cleanup(unsigned long arg); +static DECLARE_TASKLET(cvm_oct_tx_cleanup_tasklet, cvm_oct_tx_do_cleanup, 0); + +/* Maximum number of SKBs to try to free per xmit packet. */ +#define MAX_SKB_TO_FREE (MAX_OUT_QUEUE_DEPTH * 2) + +static inline int32_t cvm_oct_adjust_skb_to_free(int32_t skb_to_free, int fau) +{ + int32_t undo; + undo = skb_to_free > 0 ? MAX_SKB_TO_FREE : skb_to_free + MAX_SKB_TO_FREE; + if (undo > 0) + cvmx_fau_atomic_add32(fau, -undo); + skb_to_free = -skb_to_free > MAX_SKB_TO_FREE ? MAX_SKB_TO_FREE : -skb_to_free; + return skb_to_free; +} + +static void cvm_oct_kick_tx_poll_watchdog(void) +{ + union cvmx_ciu_timx ciu_timx; + ciu_timx.u64 = 0; + ciu_timx.s.one_shot = 1; + ciu_timx.s.len = cvm_oct_tx_poll_interval; + cvmx_write_csr(CVMX_CIU_TIMX(1), ciu_timx.u64); +} + +void cvm_oct_free_tx_skbs(struct net_device *dev) +{ + int32_t skb_to_free; + int qos, queues_per_port; + int total_freed = 0; + int total_remaining = 0; + unsigned long flags; + struct octeon_ethernet *priv = netdev_priv(dev); + + queues_per_port = cvmx_pko_get_num_queues(priv->port); + /* Drain any pending packets in the free list */ + for (qos = 0; qos < queues_per_port; qos++) { + if (skb_queue_len(&priv->tx_free_list[qos]) == 0) + continue; + skb_to_free = cvmx_fau_fetch_and_add32(priv->fau+qos*4, MAX_SKB_TO_FREE); + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, priv->fau+qos*4); + + + total_freed += skb_to_free; + if (skb_to_free > 0) { + struct sk_buff *to_free_list = NULL; + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + while (skb_to_free > 0) { + struct sk_buff *t = __skb_dequeue(&priv->tx_free_list[qos]); + t->next = to_free_list; + to_free_list = t; + skb_to_free--; + } + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); + /* Do the actual freeing outside of the lock. */ + while (to_free_list) { + struct sk_buff *t = to_free_list; + to_free_list = to_free_list->next; + dev_kfree_skb_any(t); + } + } + total_remaining += skb_queue_len(&priv->tx_free_list[qos]); + } + if (total_freed >= 0 && netif_queue_stopped(dev)) + netif_wake_queue(dev); + if (total_remaining) + cvm_oct_kick_tx_poll_watchdog(); +} + /** - * Packet transmit - * + * cvm_oct_xmit - transmit a packet * @skb: Packet to send * @dev: Device info structure - * Returns Always returns zero + * + * Returns Always returns NETDEV_TX_OK */ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -81,13 +149,15 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) union cvmx_buf_ptr hw_buffer; uint64_t old_scratch; uint64_t old_scratch2; - int dropped; int qos; - int queue_it_up; + int i; + enum {QUEUE_CORE, QUEUE_HW, QUEUE_DROP} queue_type; struct octeon_ethernet *priv = netdev_priv(dev); + struct sk_buff *to_free_list; int32_t skb_to_free; - int32_t undo; int32_t buffers_to_free; + u32 total_to_clean; + unsigned long flags; #if REUSE_SKBUFFS_WITHOUT_FREE unsigned char *fpa_head; #endif @@ -98,9 +168,6 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) */ prefetch(priv); - /* Start off assuming no drop */ - dropped = 0; - /* * The check on CVMX_PKO_QUEUES_PER_PORT_* is designed to * completely remove "qos" in the event neither interface @@ -135,6 +202,28 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) } /* + * We have space for 6 segment pointers, If there will be more + * than that, we must linearize. + */ + if (unlikely(skb_shinfo(skb)->nr_frags > 5)) { + if (unlikely(__skb_linearize(skb))) { + queue_type = QUEUE_DROP; + if (USE_ASYNC_IOBDMA) { + /* Get the number of skbuffs in use by the hardware */ + CVMX_SYNCIOBDMA; + skb_to_free = cvmx_scratch_read64(CVMX_SCR_SCRATCH); + } else { + /* Get the number of skbuffs in use by the hardware */ + skb_to_free = cvmx_fau_fetch_and_add32(priv->fau + qos * 4, + MAX_SKB_TO_FREE); + } + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, priv->fau + qos * 4); + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + goto skip_xmit; + } + } + + /* * The CN3XXX series of parts has an errata (GMX-401) which * causes the GMX block to hang if a collision occurs towards * the end of a <68 byte packet. As a workaround for this, we @@ -162,13 +251,6 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) } } - /* Build the PKO buffer pointer */ - hw_buffer.u64 = 0; - hw_buffer.s.addr = cvmx_ptr_to_phys(skb->data); - hw_buffer.s.pool = 0; - hw_buffer.s.size = - (unsigned long)skb_end_pointer(skb) - (unsigned long)skb->head; - /* Build the PKO command */ pko_command.u64 = 0; pko_command.s.n2 = 1; /* Don't pollute L2 with the outgoing packet */ @@ -178,7 +260,31 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) pko_command.s.subone0 = 1; pko_command.s.dontfree = 1; - pko_command.s.reg0 = priv->fau + qos * 4; + + /* Build the PKO buffer pointer */ + hw_buffer.u64 = 0; + if (skb_shinfo(skb)->nr_frags == 0) { + hw_buffer.s.addr = XKPHYS_TO_PHYS((u64)skb->data); + hw_buffer.s.pool = 0; + hw_buffer.s.size = skb->len; + } else { + hw_buffer.s.addr = XKPHYS_TO_PHYS((u64)skb->data); + hw_buffer.s.pool = 0; + hw_buffer.s.size = skb_headlen(skb); + CVM_OCT_SKB_CB(skb)[0] = hw_buffer.u64; + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + struct skb_frag_struct *fs = skb_shinfo(skb)->frags + i; + hw_buffer.s.addr = XKPHYS_TO_PHYS((u64)(page_address(fs->page) + fs->page_offset)); + hw_buffer.s.size = fs->size; + CVM_OCT_SKB_CB(skb)[i + 1] = hw_buffer.u64; + } + hw_buffer.s.addr = XKPHYS_TO_PHYS((u64)CVM_OCT_SKB_CB(skb)); + hw_buffer.s.size = skb_shinfo(skb)->nr_frags + 1; + pko_command.s.segs = skb_shinfo(skb)->nr_frags + 1; + pko_command.s.gather = 1; + goto dont_put_skbuff_in_hw; + } + /* * See if we can put this skb in the FPA pool. Any strange * behavior from the Linux networking stack will most likely @@ -190,7 +296,7 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) * shown a 25% increase in performance under some loads. */ #if REUSE_SKBUFFS_WITHOUT_FREE - fpa_head = skb->head + 128 - ((unsigned long)skb->head & 0x7f); + fpa_head = skb->head + 256 - ((unsigned long)skb->head & 0x7f); if (unlikely(skb->data < fpa_head)) { /* * printk("TX buffer beginning can't meet FPA @@ -248,10 +354,9 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) * We can use this buffer in the FPA. We don't need the FAU * update anymore */ - pko_command.s.reg0 = 0; pko_command.s.dontfree = 0; - hw_buffer.s.back = (skb->data - fpa_head) >> 7; + hw_buffer.s.back = ((unsigned long)skb->data >> 7) - ((unsigned long)fpa_head >> 7); *(struct sk_buff **)(fpa_head - sizeof(void *)) = skb; /* @@ -272,16 +377,16 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) skb->tc_verd = 0; #endif /* CONFIG_NET_CLS_ACT */ #endif /* CONFIG_NET_SCHED */ +#endif /* REUSE_SKBUFFS_WITHOUT_FREE */ dont_put_skbuff_in_hw: -#endif /* REUSE_SKBUFFS_WITHOUT_FREE */ /* Check if we can use the hardware checksumming */ if (USE_HW_TCPUDP_CHECKSUM && (skb->protocol == htons(ETH_P_IP)) && (ip_hdr(skb)->version == 4) && (ip_hdr(skb)->ihl == 5) && ((ip_hdr(skb)->frag_off == 0) || (ip_hdr(skb)->frag_off == 1 << 14)) - && ((ip_hdr(skb)->protocol == IP_PROTOCOL_TCP) - || (ip_hdr(skb)->protocol == IP_PROTOCOL_UDP))) { + && ((ip_hdr(skb)->protocol == IPPROTO_TCP) + || (ip_hdr(skb)->protocol == IPPROTO_UDP))) { /* Use hardware checksum calc */ pko_command.s.ipoffp1 = sizeof(struct ethhdr) + 1; } @@ -299,89 +404,116 @@ dont_put_skbuff_in_hw: cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); } - /* - * We try to claim MAX_SKB_TO_FREE buffers. If there were not - * that many available, we have to un-claim (undo) any that - * were in excess. If skb_to_free is positive we will free - * that many buffers. - */ - undo = skb_to_free > 0 ? - MAX_SKB_TO_FREE : skb_to_free + MAX_SKB_TO_FREE; - if (undo > 0) - cvmx_fau_atomic_add32(priv->fau+qos*4, -undo); - skb_to_free = -skb_to_free > MAX_SKB_TO_FREE ? - MAX_SKB_TO_FREE : -skb_to_free; + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, priv->fau+qos*4); /* * If we're sending faster than the receive can free them then * don't do the HW free. */ - if ((buffers_to_free < -100) && !pko_command.s.dontfree) { + if ((buffers_to_free < -100) && !pko_command.s.dontfree) pko_command.s.dontfree = 1; - pko_command.s.reg0 = priv->fau + qos * 4; + + if (pko_command.s.dontfree) { + queue_type = QUEUE_CORE; + pko_command.s.reg0 = priv->fau+qos*4; + } else { + queue_type = QUEUE_HW; } + if (USE_ASYNC_IOBDMA) + cvmx_fau_async_fetch_and_add32(CVMX_SCR_SCRATCH, FAU_TOTAL_TX_TO_CLEAN, 1); - cvmx_pko_send_packet_prepare(priv->port, priv->queue + qos, - CVMX_PKO_LOCK_CMD_QUEUE); + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); /* Drop this packet if we have too many already queued to the HW */ - if (unlikely - (skb_queue_len(&priv->tx_free_list[qos]) >= MAX_OUT_QUEUE_DEPTH)) { - /* - DEBUGPRINT("%s: Tx dropped. Too many queued\n", dev->name); - */ - dropped = 1; + if (unlikely(skb_queue_len(&priv->tx_free_list[qos]) >= MAX_OUT_QUEUE_DEPTH)) { + if (dev->tx_queue_len != 0) { + /* Drop the lock when notifying the core. */ + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); + netif_stop_queue(dev); + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + } else { + /* If not using normal queueing. */ + queue_type = QUEUE_DROP; + goto skip_xmit; + } } + + cvmx_pko_send_packet_prepare(priv->port, priv->queue + qos, + CVMX_PKO_LOCK_NONE); + /* Send the packet to the output queue */ - else if (unlikely - (cvmx_pko_send_packet_finish - (priv->port, priv->queue + qos, pko_command, hw_buffer, - CVMX_PKO_LOCK_CMD_QUEUE))) { + if (unlikely(cvmx_pko_send_packet_finish(priv->port, + priv->queue + qos, + pko_command, hw_buffer, + CVMX_PKO_LOCK_NONE))) { DEBUGPRINT("%s: Failed to send the packet\n", dev->name); - dropped = 1; + queue_type = QUEUE_DROP; + } +skip_xmit: + to_free_list = NULL; + + switch (queue_type) { + case QUEUE_DROP: + skb->next = to_free_list; + to_free_list = skb; + priv->stats.tx_dropped++; + break; + case QUEUE_HW: + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, -1); + break; + case QUEUE_CORE: + __skb_queue_tail(&priv->tx_free_list[qos], skb); + break; + default: + BUG(); + } + + while (skb_to_free > 0) { + struct sk_buff *t = __skb_dequeue(&priv->tx_free_list[qos]); + t->next = to_free_list; + to_free_list = t; + skb_to_free--; + } + + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); + + /* Do the actual freeing outside of the lock. */ + while (to_free_list) { + struct sk_buff *t = to_free_list; + to_free_list = to_free_list->next; + dev_kfree_skb_any(t); } if (USE_ASYNC_IOBDMA) { + CVMX_SYNCIOBDMA; + total_to_clean = cvmx_scratch_read64(CVMX_SCR_SCRATCH); /* Restore the scratch area */ cvmx_scratch_write64(CVMX_SCR_SCRATCH, old_scratch); cvmx_scratch_write64(CVMX_SCR_SCRATCH + 8, old_scratch2); - } - - queue_it_up = 0; - if (unlikely(dropped)) { - dev_kfree_skb_any(skb); - priv->stats.tx_dropped++; } else { - if (USE_SKBUFFS_IN_HW) { - /* Put this packet on the queue to be freed later */ - if (pko_command.s.dontfree) - queue_it_up = 1; - else - cvmx_fau_atomic_add32 - (FAU_NUM_PACKET_BUFFERS_TO_FREE, -1); - } else { - /* Put this packet on the queue to be freed later */ - queue_it_up = 1; - } + total_to_clean = cvmx_fau_fetch_and_add32(FAU_TOTAL_TX_TO_CLEAN, 1); } - if (queue_it_up) { - spin_lock(&priv->tx_free_list[qos].lock); - __skb_queue_tail(&priv->tx_free_list[qos], skb); - cvm_oct_free_tx_skbs(priv, skb_to_free, qos, 0); - spin_unlock(&priv->tx_free_list[qos].lock); - } else { - cvm_oct_free_tx_skbs(priv, skb_to_free, qos, 1); + if (total_to_clean & 0x3ff) { + /* + * Schedule the cleanup tasklet every 1024 packets for + * the pathological case of high traffic on one port + * delaying clean up of packets on a different port + * that is blocked waiting for the cleanup. + */ + tasklet_schedule(&cvm_oct_tx_cleanup_tasklet); } - return 0; + cvm_oct_kick_tx_poll_watchdog(); + + return NETDEV_TX_OK; } /** - * Packet transmit to the POW - * + * cvm_oct_xmit_pow - transmit a packet to the POW * @skb: Packet to send * @dev: Device info structure + * Returns Always returns zero */ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev) @@ -459,8 +591,8 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev) work->word2.s.dec_ipcomp = 0; /* FIXME */ #endif work->word2.s.tcp_or_udp = - (ip_hdr(skb)->protocol == IP_PROTOCOL_TCP) - || (ip_hdr(skb)->protocol == IP_PROTOCOL_UDP); + (ip_hdr(skb)->protocol == IPPROTO_TCP) + || (ip_hdr(skb)->protocol == IPPROTO_UDP); #if 0 /* FIXME */ work->word2.s.dec_ipsec = 0; @@ -529,116 +661,63 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev) } /** - * Transmit a work queue entry out of the ethernet port. Both - * the work queue entry and the packet data can optionally be - * freed. The work will be freed on error as well. - * - * @dev: Device to transmit out. - * @work_queue_entry: - * Work queue entry to send - * @do_free: True if the work queue entry and packet data should be - * freed. If false, neither will be freed. - * @qos: Index into the queues for this port to transmit on. This - * is used to implement QoS if their are multiple queues per - * port. This parameter must be between 0 and the number of - * queues per port minus 1. Values outside of this range will - * be change to zero. + * cvm_oct_tx_shutdown_dev - free all skb that are currently queued for TX. + * @dev: Device being shutdown * - * Returns Zero on success, negative on failure. */ -int cvm_oct_transmit_qos(struct net_device *dev, void *work_queue_entry, - int do_free, int qos) +void cvm_oct_tx_shutdown_dev(struct net_device *dev) { - unsigned long flags; - union cvmx_buf_ptr hw_buffer; - cvmx_pko_command_word0_t pko_command; - int dropped; struct octeon_ethernet *priv = netdev_priv(dev); - cvmx_wqe_t *work = work_queue_entry; + unsigned long flags; + int qos; - if (!(dev->flags & IFF_UP)) { - DEBUGPRINT("%s: Device not up\n", dev->name); - if (do_free) - cvm_oct_free_work(work); - return -1; + for (qos = 0; qos < 16; qos++) { + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + while (skb_queue_len(&priv->tx_free_list[qos])) + dev_kfree_skb_any(__skb_dequeue + (&priv->tx_free_list[qos])); + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); } +} - /* The check on CVMX_PKO_QUEUES_PER_PORT_* is designed to completely - remove "qos" in the event neither interface supports - multiple queues per port */ - if ((CVMX_PKO_QUEUES_PER_PORT_INTERFACE0 > 1) || - (CVMX_PKO_QUEUES_PER_PORT_INTERFACE1 > 1)) { - if (qos <= 0) - qos = 0; - else if (qos >= cvmx_pko_get_num_queues(priv->port)) - qos = 0; - } else - qos = 0; - - /* Start off assuming no drop */ - dropped = 0; - - local_irq_save(flags); - cvmx_pko_send_packet_prepare(priv->port, priv->queue + qos, - CVMX_PKO_LOCK_CMD_QUEUE); - - /* Build the PKO buffer pointer */ - hw_buffer.u64 = 0; - hw_buffer.s.addr = work->packet_ptr.s.addr; - hw_buffer.s.pool = CVMX_FPA_PACKET_POOL; - hw_buffer.s.size = CVMX_FPA_PACKET_POOL_SIZE; - hw_buffer.s.back = work->packet_ptr.s.back; +static void cvm_oct_tx_do_cleanup(unsigned long arg) +{ + int port; - /* Build the PKO command */ - pko_command.u64 = 0; - pko_command.s.n2 = 1; /* Don't pollute L2 with the outgoing packet */ - pko_command.s.dontfree = !do_free; - pko_command.s.segs = work->word2.s.bufs; - pko_command.s.total_bytes = work->len; + for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { + if (cvm_oct_device[port]) { + struct net_device *dev = cvm_oct_device[port]; + cvm_oct_free_tx_skbs(dev); + } + } +} - /* Check if we can use the hardware checksumming */ - if (unlikely(work->word2.s.not_IP || work->word2.s.IP_exc)) - pko_command.s.ipoffp1 = 0; - else - pko_command.s.ipoffp1 = sizeof(struct ethhdr) + 1; +static irqreturn_t cvm_oct_tx_cleanup_watchdog(int cpl, void *dev_id) +{ + /* Disable the interrupt. */ + cvmx_write_csr(CVMX_CIU_TIMX(1), 0); + /* Do the work in the tasklet. */ + tasklet_schedule(&cvm_oct_tx_cleanup_tasklet); + return IRQ_HANDLED; +} - /* Send the packet to the output queue */ - if (unlikely - (cvmx_pko_send_packet_finish - (priv->port, priv->queue + qos, pko_command, hw_buffer, - CVMX_PKO_LOCK_CMD_QUEUE))) { - DEBUGPRINT("%s: Failed to send the packet\n", dev->name); - dropped = -1; - } - local_irq_restore(flags); +void cvm_oct_tx_initialize(void) +{ + int i; - if (unlikely(dropped)) { - if (do_free) - cvm_oct_free_work(work); - priv->stats.tx_dropped++; - } else if (do_free) - cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1)); + /* Disable the interrupt. */ + cvmx_write_csr(CVMX_CIU_TIMX(1), 0); + /* Register an IRQ hander for to receive CIU_TIMX(1) interrupts */ + i = request_irq(OCTEON_IRQ_TIMER1, + cvm_oct_tx_cleanup_watchdog, 0, + "Ethernet", cvm_oct_device); - return dropped; + if (i) + panic("Could not acquire Ethernet IRQ %d\n", OCTEON_IRQ_TIMER1); } -EXPORT_SYMBOL(cvm_oct_transmit_qos); -/** - * This function frees all skb that are currently queued for TX. - * - * @dev: Device being shutdown - */ -void cvm_oct_tx_shutdown(struct net_device *dev) +void cvm_oct_tx_shutdown(void) { - struct octeon_ethernet *priv = netdev_priv(dev); - unsigned long flags; - int qos; - - for (qos = 0; qos < 16; qos++) { - spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); - while (skb_queue_len(&priv->tx_free_list[qos])) - dev_kfree_skb_any(__skb_dequeue - (&priv->tx_free_list[qos])); - spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); - } + /* Free the interrupt handler */ + free_irq(OCTEON_IRQ_TIMER1, cvm_oct_device); } diff --git a/drivers/staging/octeon/ethernet-tx.h b/drivers/staging/octeon/ethernet-tx.h index c0bebf750bc0..547680c6c371 100644 --- a/drivers/staging/octeon/ethernet-tx.h +++ b/drivers/staging/octeon/ethernet-tx.h @@ -29,29 +29,6 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev); int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev); int cvm_oct_transmit_qos(struct net_device *dev, void *work_queue_entry, int do_free, int qos); -void cvm_oct_tx_shutdown(struct net_device *dev); - -/** - * Free dead transmit skbs. - * - * @priv: The driver data - * @skb_to_free: The number of SKBs to free (free none if negative). - * @qos: The queue to free from. - * @take_lock: If true, acquire the skb list lock. - */ -static inline void cvm_oct_free_tx_skbs(struct octeon_ethernet *priv, - int skb_to_free, - int qos, int take_lock) -{ - /* Free skbuffs not in use by the hardware. */ - if (skb_to_free > 0) { - if (take_lock) - spin_lock(&priv->tx_free_list[qos].lock); - while (skb_to_free > 0) { - dev_kfree_skb(__skb_dequeue(&priv->tx_free_list[qos])); - skb_to_free--; - } - if (take_lock) - spin_unlock(&priv->tx_free_list[qos].lock); - } -} +void cvm_oct_tx_initialize(void); +void cvm_oct_tx_shutdown(void); +void cvm_oct_tx_shutdown_dev(struct net_device *dev); diff --git a/drivers/staging/octeon/ethernet-util.h b/drivers/staging/octeon/ethernet-util.h index 37b665918000..23467563fe57 100644 --- a/drivers/staging/octeon/ethernet-util.h +++ b/drivers/staging/octeon/ethernet-util.h @@ -30,10 +30,9 @@ } while (0) /** - * Given a packet data address, return a pointer to the - * beginning of the packet buffer. - * + * cvm_oct_get_buffer_ptr - convert packet data address to pointer * @packet_ptr: Packet data hardware address + * * Returns Packet buffer pointer */ static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr) @@ -43,9 +42,7 @@ static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr) } /** - * Given an IPD/PKO port number, return the logical interface it is - * on. - * + * INTERFACE - convert IPD port to locgical interface * @ipd_port: Port to check * * Returns Logical interface @@ -65,9 +62,7 @@ static inline int INTERFACE(int ipd_port) } /** - * Given an IPD/PKO port number, return the port's index on a - * logical interface. - * + * INDEX - convert IPD/PKO port number to the port's interface index * @ipd_port: Port to check * * Returns Index into interface port list diff --git a/drivers/staging/octeon/ethernet-xaui.c b/drivers/staging/octeon/ethernet-xaui.c index ee3dc41b2c53..3fca1cc31ed8 100644 --- a/drivers/staging/octeon/ethernet-xaui.c +++ b/drivers/staging/octeon/ethernet-xaui.c @@ -26,7 +26,6 @@ **********************************************************************/ #include <linux/kernel.h> #include <linux/netdevice.h> -#include <linux/mii.h> #include <net/dst.h> #include <asm/octeon/octeon.h> diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c index 4cfd4b136b32..02b63678811a 100644 --- a/drivers/staging/octeon/ethernet.c +++ b/drivers/staging/octeon/ethernet.c @@ -29,7 +29,6 @@ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> -#include <linux/delay.h> #include <linux/phy.h> #include <net/dst.h> @@ -43,8 +42,6 @@ #include "ethernet-tx.h" #include "ethernet-mdio.h" #include "ethernet-util.h" -#include "ethernet-proc.h" - #include "cvmx-pip.h" #include "cvmx-pko.h" @@ -104,13 +101,15 @@ MODULE_PARM_DESC(pow_send_list, "\n" "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n" "\tusing the pow_send_group."); -static int disable_core_queueing = 1; -module_param(disable_core_queueing, int, 0444); -MODULE_PARM_DESC(disable_core_queueing, "\n" - "\tWhen set the networking core's tx_queue_len is set to zero. This\n" - "\tallows packets to be sent without lock contention in the packet\n" - "\tscheduler resulting in some cases in improved throughput.\n"); +int max_rx_cpus = -1; +module_param(max_rx_cpus, int, 0444); +MODULE_PARM_DESC(max_rx_cpus, "\n" + "\t\tThe maximum number of CPUs to use for packet reception.\n" + "\t\tUse -1 to use all available CPUs."); +int rx_napi_weight = 32; +module_param(rx_napi_weight, int, 0444); +MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter."); /* * The offset from mac_addr_base that should be used for the next port @@ -122,9 +121,16 @@ MODULE_PARM_DESC(disable_core_queueing, "\n" static unsigned int cvm_oct_mac_addr_offset; /** - * Periodic timer to check auto negotiation + * cvm_oct_poll_queue - Workqueue for polling operations. + */ +struct workqueue_struct *cvm_oct_poll_queue; + +/** + * cvm_oct_poll_queue_stopping - flag to indicate polling should stop. + * + * Set to one right before cvm_oct_poll_queue is destroyed. */ -static struct timer_list cvm_oct_poll_timer; +atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0); /** * Array of every ethernet device owned by this driver indexed by @@ -132,65 +138,44 @@ static struct timer_list cvm_oct_poll_timer; */ struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS]; -/** - * Periodic timer tick for slow management operations - * - * @arg: Device to check - */ -static void cvm_do_timer(unsigned long arg) +u64 cvm_oct_tx_poll_interval; + +static void cvm_oct_rx_refill_worker(struct work_struct *work); +static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker); + +static void cvm_oct_rx_refill_worker(struct work_struct *work) { - int32_t skb_to_free, undo; - int queues_per_port; - int qos; - struct octeon_ethernet *priv; - static int port; + /* + * FPA 0 may have been drained, try to refill it if we need + * more than num_packet_buffers / 2, otherwise normal receive + * processing will refill it. If it were drained, no packets + * could be received so cvm_oct_napi_poll would never be + * invoked to do the refill. + */ + cvm_oct_rx_refill_pool(num_packet_buffers / 2); - if (port >= CVMX_PIP_NUM_INPUT_PORTS) { - /* - * All ports have been polled. Start the next - * iteration through the ports in one second. - */ - port = 0; - mod_timer(&cvm_oct_poll_timer, jiffies + HZ); - return; - } - if (!cvm_oct_device[port]) - goto out; + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + queue_delayed_work(cvm_oct_poll_queue, + &cvm_oct_rx_refill_work, HZ); +} + +static void cvm_oct_periodic_worker(struct work_struct *work) +{ + struct octeon_ethernet *priv = container_of(work, + struct octeon_ethernet, + port_periodic_work.work); - priv = netdev_priv(cvm_oct_device[port]); if (priv->poll) - priv->poll(cvm_oct_device[port]); - - queues_per_port = cvmx_pko_get_num_queues(port); - /* Drain any pending packets in the free list */ - for (qos = 0; qos < queues_per_port; qos++) { - if (skb_queue_len(&priv->tx_free_list[qos]) == 0) - continue; - skb_to_free = cvmx_fau_fetch_and_add32(priv->fau + qos * 4, - MAX_SKB_TO_FREE); - undo = skb_to_free > 0 ? - MAX_SKB_TO_FREE : skb_to_free + MAX_SKB_TO_FREE; - if (undo > 0) - cvmx_fau_atomic_add32(priv->fau+qos*4, -undo); - skb_to_free = -skb_to_free > MAX_SKB_TO_FREE ? - MAX_SKB_TO_FREE : -skb_to_free; - cvm_oct_free_tx_skbs(priv, skb_to_free, qos, 1); - } - cvm_oct_device[port]->netdev_ops->ndo_get_stats(cvm_oct_device[port]); + priv->poll(cvm_oct_device[priv->port]); -out: - port++; - /* Poll the next port in a 50th of a second. - This spreads the polling of ports out a little bit */ - mod_timer(&cvm_oct_poll_timer, jiffies + HZ / 50); -} + cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(cvm_oct_device[priv->port]); + + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + queue_delayed_work(cvm_oct_poll_queue, &priv->port_periodic_work, HZ); + } -/** - * Configure common hardware for all interfaces - */ static __init void cvm_oct_configure_common_hw(void) { - int r; /* Setup the FPA */ cvmx_fpa_enable(); cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, @@ -205,28 +190,13 @@ static __init void cvm_oct_configure_common_hw(void) cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8); - /* Enable the MII interface */ - if (!octeon_is_simulation()) - cvmx_write_csr(CVMX_SMIX_EN(0), 1); - - /* Register an IRQ hander for to receive POW interrupts */ - r = request_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, - cvm_oct_do_interrupt, IRQF_SHARED, "Ethernet", - cvm_oct_device); - -#if defined(CONFIG_SMP) && 0 - if (USE_MULTICORE_RECEIVE) { - irq_set_affinity(OCTEON_IRQ_WORKQ0 + pow_receive_group, - cpu_online_mask); - } -#endif } /** - * Free a work queue entry received in a intercept callback. + * cvm_oct_free_work- Free a work queue entry + * + * @work_queue_entry: Work queue entry to free * - * @work_queue_entry: - * Work queue entry to free * Returns Zero on success, Negative on failure. */ int cvm_oct_free_work(void *work_queue_entry) @@ -253,9 +223,9 @@ int cvm_oct_free_work(void *work_queue_entry) EXPORT_SYMBOL(cvm_oct_free_work); /** - * Get the low level ethernet statistics - * + * cvm_oct_common_get_stats - get the low level ethernet statistics * @dev: Device to get the statistics from + * * Returns Pointer to the statistics */ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) @@ -299,8 +269,7 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) } /** - * Change the link MTU. Unimplemented - * + * cvm_oct_common_change_mtu - change the link MTU * @dev: Device to change * @new_mtu: The new MTU * @@ -364,8 +333,7 @@ static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) } /** - * Set the multicast list. Currently unimplemented. - * + * cvm_oct_common_set_multicast_list - set the multicast list * @dev: Device to work on */ static void cvm_oct_common_set_multicast_list(struct net_device *dev) @@ -420,10 +388,10 @@ static void cvm_oct_common_set_multicast_list(struct net_device *dev) } /** - * Set the hardware MAC address for a device - * - * @dev: Device to change the MAC address for - * @addr: Address structure to change it too. MAC address is addr + 2. + * cvm_oct_common_set_mac_address - set the hardware MAC address for a device + * @dev: The device in question. + * @addr: Address structure to change it too. + * Returns Zero on success */ static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) @@ -470,9 +438,9 @@ static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) } /** - * Per network device initialization - * + * cvm_oct_common_init - per network device initialization * @dev: Device to initialize + * * Returns Zero on success */ int cvm_oct_common_init(struct net_device *dev) @@ -510,8 +478,11 @@ int cvm_oct_common_init(struct net_device *dev) && (always_use_pow || strstr(pow_send_list, dev->name))) priv->queue = -1; - if (priv->queue != -1 && USE_HW_TCPUDP_CHECKSUM) - dev->features |= NETIF_F_IP_CSUM; + if (priv->queue != -1) { + dev->features |= NETIF_F_SG; + if (USE_HW_TCPUDP_CHECKSUM) + dev->features |= NETIF_F_IP_CSUM; + } /* We do our own locking, Linux doesn't need to */ dev->features |= NETIF_F_LLTX; @@ -625,12 +596,6 @@ static const struct net_device_ops cvm_oct_pow_netdev_ops = { extern void octeon_mdiobus_force_mod_depencency(void); -/** - * Module/ driver initialization. Creates the linux network - * devices. - * - * Returns Zero on success - */ static int __init cvm_oct_init_module(void) { int num_interfaces; @@ -648,8 +613,12 @@ static int __init cvm_oct_init_module(void) else cvm_oct_mac_addr_offset = 0; - cvm_oct_proc_initialize(); - cvm_oct_rx_initialize(); + cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet"); + if (cvm_oct_poll_queue == NULL) { + pr_err("octeon-ethernet: Cannot create workqueue"); + return -ENOMEM; + } + cvm_oct_configure_common_hw(); cvmx_helper_initialize_packet_io_global(); @@ -682,6 +651,9 @@ static int __init cvm_oct_init_module(void) */ cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + /* Initialize the FAU used for counting tx SKBs that need to be freed */ + cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0); + if ((pow_send_group != -1)) { struct net_device *dev; pr_info("\tConfiguring device for POW only access\n"); @@ -689,7 +661,6 @@ static int __init cvm_oct_init_module(void) if (dev) { /* Initialize the device private structure. */ struct octeon_ethernet *priv = netdev_priv(dev); - memset(priv, 0, sizeof(struct octeon_ethernet)); dev->netdev_ops = &cvm_oct_pow_netdev_ops; priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED; @@ -700,19 +671,16 @@ static int __init cvm_oct_init_module(void) skb_queue_head_init(&priv->tx_free_list[qos]); if (register_netdev(dev) < 0) { - pr_err("Failed to register ethernet " - "device for POW\n"); + pr_err("Failed to register ethernet device for POW\n"); kfree(dev); } else { cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev; - pr_info("%s: POW send group %d, receive " - "group %d\n", - dev->name, pow_send_group, - pow_receive_group); + pr_info("%s: POW send group %d, receive group %d\n", + dev->name, pow_send_group, + pow_receive_group); } } else { - pr_err("Failed to allocate ethernet device " - "for POW\n"); + pr_err("Failed to allocate ethernet device for POW\n"); } } @@ -730,17 +698,15 @@ static int __init cvm_oct_init_module(void) struct net_device *dev = alloc_etherdev(sizeof(struct octeon_ethernet)); if (!dev) { - pr_err("Failed to allocate ethernet device " - "for port %d\n", port); + pr_err("Failed to allocate ethernet device for port %d\n", port); continue; } - if (disable_core_queueing) - dev->tx_queue_len = 0; /* Initialize the device private structure. */ priv = netdev_priv(dev); - memset(priv, 0, sizeof(struct octeon_ethernet)); + INIT_DELAYED_WORK(&priv->port_periodic_work, + cvm_oct_periodic_worker); priv->imode = imode; priv->port = port; priv->queue = cvmx_pko_get_base_queue(priv->port); @@ -803,44 +769,25 @@ static int __init cvm_oct_init_module(void) fau -= cvmx_pko_get_num_queues(priv->port) * sizeof(uint32_t); + queue_delayed_work(cvm_oct_poll_queue, + &priv->port_periodic_work, HZ); } } } - if (INTERRUPT_LIMIT) { - /* - * Set the POW timer rate to give an interrupt at most - * INTERRUPT_LIMIT times per second. - */ - cvmx_write_csr(CVMX_POW_WQ_INT_PC, - octeon_bootinfo->eclock_hz / (INTERRUPT_LIMIT * - 16 * 256) << 8); + cvm_oct_tx_initialize(); + cvm_oct_rx_initialize(); - /* - * Enable POW timer interrupt. It will count when - * there are packets available. - */ - cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), - 0x1ful << 24); - } else { - /* Enable POW interrupt when our port has at least one packet */ - cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0x1001); - } + /* + * 150 uS: about 10 1500-byte packtes at 1GE. + */ + cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000); - /* Enable the poll timer for checking RGMII status */ - init_timer(&cvm_oct_poll_timer); - cvm_oct_poll_timer.data = 0; - cvm_oct_poll_timer.function = cvm_do_timer; - mod_timer(&cvm_oct_poll_timer, jiffies + HZ); + queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ); return 0; } -/** - * Module / driver shutdown - * - * Returns Zero on success - */ static void __exit cvm_oct_cleanup_module(void) { int port; @@ -853,22 +800,31 @@ static void __exit cvm_oct_cleanup_module(void) /* Free the interrupt handler */ free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device); - del_timer(&cvm_oct_poll_timer); + atomic_inc_return(&cvm_oct_poll_queue_stopping); + cancel_delayed_work_sync(&cvm_oct_rx_refill_work); + cvm_oct_rx_shutdown(); + cvm_oct_tx_shutdown(); + cvmx_pko_disable(); /* Free the ethernet devices */ for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { if (cvm_oct_device[port]) { - cvm_oct_tx_shutdown(cvm_oct_device[port]); - unregister_netdev(cvm_oct_device[port]); - kfree(cvm_oct_device[port]); + struct net_device *dev = cvm_oct_device[port]; + struct octeon_ethernet *priv = netdev_priv(dev); + cancel_delayed_work_sync(&priv->port_periodic_work); + + cvm_oct_tx_shutdown_dev(dev); + unregister_netdev(dev); + kfree(dev); cvm_oct_device[port] = NULL; } } + destroy_workqueue(cvm_oct_poll_queue); + cvmx_pko_shutdown(); - cvm_oct_proc_shutdown(); cvmx_ipd_free_ptr(); diff --git a/drivers/staging/octeon/octeon-ethernet.h b/drivers/staging/octeon/octeon-ethernet.h index 402a15b9bb0e..d58192563552 100644 --- a/drivers/staging/octeon/octeon-ethernet.h +++ b/drivers/staging/octeon/octeon-ethernet.h @@ -4,7 +4,7 @@ * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * - * Copyright (c) 2003-2007 Cavium Networks + * Copyright (c) 2003-2010 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as @@ -57,58 +57,12 @@ struct octeon_ethernet { uint64_t link_info; /* Called periodically to check link status */ void (*poll) (struct net_device *dev); + struct delayed_work port_periodic_work; + struct work_struct port_work; /* may be unused. */ }; -/** - * Free a work queue entry received in a intercept callback. - * - * @work_queue_entry: - * Work queue entry to free - * Returns Zero on success, Negative on failure. - */ int cvm_oct_free_work(void *work_queue_entry); -/** - * Transmit a work queue entry out of the ethernet port. Both - * the work queue entry and the packet data can optionally be - * freed. The work will be freed on error as well. - * - * @dev: Device to transmit out. - * @work_queue_entry: - * Work queue entry to send - * @do_free: True if the work queue entry and packet data should be - * freed. If false, neither will be freed. - * @qos: Index into the queues for this port to transmit on. This - * is used to implement QoS if their are multiple queues per - * port. This parameter must be between 0 and the number of - * queues per port minus 1. Values outside of this range will - * be change to zero. - * - * Returns Zero on success, negative on failure. - */ -int cvm_oct_transmit_qos(struct net_device *dev, void *work_queue_entry, - int do_free, int qos); - -/** - * Transmit a work queue entry out of the ethernet port. Both - * the work queue entry and the packet data can optionally be - * freed. The work will be freed on error as well. This simply - * wraps cvmx_oct_transmit_qos() for backwards compatability. - * - * @dev: Device to transmit out. - * @work_queue_entry: - * Work queue entry to send - * @do_free: True if the work queue entry and packet data should be - * freed. If false, neither will be freed. - * - * Returns Zero on success, negative on failure. - */ -static inline int cvm_oct_transmit(struct net_device *dev, - void *work_queue_entry, int do_free) -{ - return cvm_oct_transmit_qos(dev, work_queue_entry, do_free, 0); -} - extern int cvm_oct_rgmii_init(struct net_device *dev); extern void cvm_oct_rgmii_uninit(struct net_device *dev); extern int cvm_oct_rgmii_open(struct net_device *dev); @@ -134,5 +88,11 @@ extern int pow_send_group; extern int pow_receive_group; extern char pow_send_list[]; extern struct net_device *cvm_oct_device[]; +extern struct workqueue_struct *cvm_oct_poll_queue; +extern atomic_t cvm_oct_poll_queue_stopping; +extern u64 cvm_oct_tx_poll_interval; + +extern int max_rx_cpus; +extern int rx_napi_weight; #endif diff --git a/drivers/staging/sm7xx/smtc2d.c b/drivers/staging/sm7xx/smtc2d.c index 133b86c6a678..2fff0a0052d1 100644 --- a/drivers/staging/sm7xx/smtc2d.c +++ b/drivers/staging/sm7xx/smtc2d.c @@ -5,7 +5,7 @@ * Author: Boyod boyod.yang@siliconmotion.com.cn * * Copyright (C) 2009 Lemote, Inc. - * Author: Wu Zhangjin, wuzj@lemote.com + * Author: Wu Zhangjin, wuzhangjin@gmail.com * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for diff --git a/drivers/staging/sm7xx/smtc2d.h b/drivers/staging/sm7xx/smtc2d.h index 38d0c335322b..02b4fa29136c 100644 --- a/drivers/staging/sm7xx/smtc2d.h +++ b/drivers/staging/sm7xx/smtc2d.h @@ -5,7 +5,7 @@ * Author: Ge Wang, gewang@siliconmotion.com * * Copyright (C) 2009 Lemote, Inc. - * Author: Wu Zhangjin, wuzj@lemote.com + * Author: Wu Zhangjin, wuzhangjin@gmail.com * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for diff --git a/drivers/staging/sm7xx/smtcfb.c b/drivers/staging/sm7xx/smtcfb.c index 161dbc9c1397..a4f6f49aef48 100644 --- a/drivers/staging/sm7xx/smtcfb.c +++ b/drivers/staging/sm7xx/smtcfb.c @@ -6,7 +6,7 @@ * Boyod boyod.yang@siliconmotion.com.cn * * Copyright (C) 2009 Lemote, Inc. - * Author: Wu Zhangjin, wuzj@lemote.com + * Author: Wu Zhangjin, wuzhangjin@gmail.com * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for diff --git a/drivers/staging/sm7xx/smtcfb.h b/drivers/staging/sm7xx/smtcfb.h index 7f2c34138215..7ee565c2c952 100644 --- a/drivers/staging/sm7xx/smtcfb.h +++ b/drivers/staging/sm7xx/smtcfb.h @@ -6,7 +6,7 @@ * Boyod boyod.yang@siliconmotion.com.cn * * Copyright (C) 2009 Lemote, Inc. - * Author: Wu Zhangjin, wuzj@lemote.com + * Author: Wu Zhangjin, wuzhangjin@gmail.com * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c index 72d68b3dc478..4637bcbe03a4 100644 --- a/drivers/video/fsl-diu-fb.c +++ b/drivers/video/fsl-diu-fb.c @@ -1633,6 +1633,11 @@ static int __init fsl_diu_setup(char *options) #endif static struct of_device_id fsl_diu_match[] = { +#ifdef CONFIG_PPC_MPC512x + { + .compatible = "fsl,mpc5121-diu", + }, +#endif { .compatible = "fsl,diu", }, diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c index 2e94b71b20d9..2bb95cd308c1 100644 --- a/drivers/watchdog/ar7_wdt.c +++ b/drivers/watchdog/ar7_wdt.c @@ -34,6 +34,7 @@ #include <linux/ioport.h> #include <linux/io.h> #include <linux/uaccess.h> +#include <linux/clk.h> #include <asm/addrspace.h> #include <asm/mach-ar7/ar7.h> @@ -80,6 +81,8 @@ static struct resource *ar7_regs_wdt; /* Pointer to the remapped WDT IO space */ static struct ar7_wdt *ar7_wdt; +static struct clk *vbus_clk; + static void ar7_wdt_kick(u32 value) { WRITE_REG(ar7_wdt->kick_lock, 0x5555); @@ -138,17 +141,19 @@ static void ar7_wdt_disable(u32 value) static void ar7_wdt_update_margin(int new_margin) { u32 change; + u32 vbus_rate; - change = new_margin * (ar7_vbus_freq() / prescale_value); + vbus_rate = clk_get_rate(vbus_clk); + change = new_margin * (vbus_rate / prescale_value); if (change < 1) change = 1; if (change > 0xffff) change = 0xffff; ar7_wdt_change(change); - margin = change * prescale_value / ar7_vbus_freq(); + margin = change * prescale_value / vbus_rate; printk(KERN_INFO DRVNAME ": timer margin %d seconds (prescale %d, change %d, freq %d)\n", - margin, prescale_value, change, ar7_vbus_freq()); + margin, prescale_value, change, vbus_rate); } static void ar7_wdt_enable_wdt(void) @@ -298,6 +303,13 @@ static int __devinit ar7_wdt_probe(struct platform_device *pdev) goto out_mem_region; } + vbus_clk = clk_get(NULL, "vbus"); + if (IS_ERR(vbus_clk)) { + printk(KERN_ERR DRVNAME ": could not get vbus clock\n"); + rc = PTR_ERR(vbus_clk); + goto out_mem_region; + } + ar7_wdt_disable_wdt(); ar7_wdt_prescale(prescale_value); ar7_wdt_update_margin(margin); |
