diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/mantis/mantis_pci.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/drivers/media/dvb/mantis/mantis_pci.c b/drivers/media/dvb/mantis/mantis_pci.c new file mode 100644 index 000000000000..68ff1b2a0b3d --- /dev/null +++ b/drivers/media/dvb/mantis/mantis_pci.c @@ -0,0 +1,328 @@ +/* + Mantis PCI bridge driver + + Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <asm/io.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <linux/kmod.h> +#include <linux/vmalloc.h> +#include <linux/init.h> +#include <linux/device.h> +#include "mantis_common.h" +#include "mantis_core.h" + +#include <asm/irq.h> +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/interrupt.h> + +unsigned int verbose = 1; +module_param(verbose, int, 0644); +MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)"); + +unsigned int devs; + +#define PCI_VENDOR_ID_MANTIS 0x1822 +#define PCI_DEVICE_ID_MANTIS_R11 0x4e35 +#define DRIVER_NAME "Mantis" + +static struct pci_device_id mantis_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_MANTIS, PCI_DEVICE_ID_MANTIS_R11) }, + { 0 }, +}; + +MODULE_DEVICE_TABLE(pci, mantis_pci_table); + +static irqreturn_t mantis_pci_irq(int irq, void *dev_id) +{ + int i = 0, interrupts = 0; + u32 stat = 0, mask = 0, lstat = 0, mstat = 0; + struct mantis_pci *mantis; + + mantis = (struct mantis_pci *) dev_id; + if (unlikely(mantis == NULL)) { + dprintk(verbose, MANTIS_ERROR, 1, "Mantis == NULL"); + return IRQ_NONE; + } + stat = mmread(MANTIS_INT_STAT); + mask = mmread(MANTIS_INT_MASK); + mstat = lstat = stat & ~MANTIS_INT_RISCSTAT; + + if (!(stat & mask)) { + dprintk(verbose, MANTIS_DEBUG, 1, "Not ours !"); + return IRQ_NONE; + } + mmwrite(lstat, MANTIS_INT_STAT); + interrupts = hweight32(stat); + dprintk(verbose, MANTIS_DEBUG, 0, "=== Interrupts[%04x/%04x]=%d [", stat, mask, interrupts); + + while (lstat) { + if (lstat & MANTIS_INT_RISCEN) { + dprintk(verbose, MANTIS_DEBUG, 0, "* DMA enabl *"); + lstat &= ~MANTIS_INT_RISCEN; + + } else if (lstat & MANTIS_INT_I2CRACK) { + dprintk(verbose, MANTIS_DEBUG, 0, "* I2C R-ACK *"); + mantis->mantis_int_stat = stat; + mantis->mantis_int_mask = mask; + wake_up(&mantis->i2c_wq); + lstat &= ~MANTIS_INT_I2CRACK; + + } else if (lstat & MANTIS_INT_PCMCIA7) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-07 *"); + lstat &= ~MANTIS_INT_PCMCIA7; + + } else if (lstat & MANTIS_INT_PCMCIA6) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-06 *"); + lstat &= ~MANTIS_INT_PCMCIA6; + + } else if (lstat & MANTIS_INT_PCMCIA5) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-05 *"); + lstat &= ~MANTIS_INT_PCMCIA5; + + } else if (lstat & MANTIS_INT_PCMCIA4) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-04 *"); + lstat &= ~MANTIS_INT_PCMCIA4; + + } else if (lstat & MANTIS_INT_PCMCIA3) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-03 *"); + lstat &= ~MANTIS_INT_PCMCIA3; + + } else if (lstat & MANTIS_INT_PCMCIA2) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-02 *"); + lstat &= ~MANTIS_INT_PCMCIA2; + + } else if (lstat & MANTIS_INT_PCMCIA1) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-01 *"); + lstat &= ~MANTIS_INT_PCMCIA1; + + } else if (lstat & MANTIS_INT_PCMCIA0) { + dprintk(verbose, MANTIS_DEBUG, 0, "* PCMCIA-00 *"); + lstat &= ~MANTIS_INT_PCMCIA0; + + } else if (lstat & MANTIS_INT_IRQ0) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT IRQ-0 *"); + lstat &= ~MANTIS_INT_IRQ0; + + } else if (lstat & MANTIS_INT_IRQ1) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT IRQ-1 *"); + lstat &= ~MANTIS_INT_IRQ1; + + } else if (lstat & MANTIS_INT_OCERR) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT OCERR *"); + lstat &= ~MANTIS_INT_OCERR; + + } else if (lstat & MANTIS_INT_PABORT) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT PABRT *"); + lstat &= ~MANTIS_INT_PABORT; + + } else if (lstat & MANTIS_INT_RIPERR) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT RIPRR *"); + lstat &= ~MANTIS_INT_RIPERR; + + } else if (lstat & MANTIS_INT_PPERR) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT PPERR *"); + lstat &= ~MANTIS_INT_PPERR; + + } else if (lstat & MANTIS_INT_FTRGT) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT FTRGT *"); + lstat &= ~MANTIS_INT_FTRGT; + + } else if (lstat & MANTIS_INT_RISCI) { + dprintk(verbose, MANTIS_DEBUG, 0, "* INT RISCI *"); + mantis->finished_block = (stat & MANTIS_INT_RISCSTAT) >> 28; + tasklet_schedule(&mantis->tasklet); + lstat &= ~MANTIS_INT_RISCI; + + } else if (lstat & MANTIS_INT_I2CDONE) { + dprintk(verbose, MANTIS_DEBUG, 0, "* I2C DONE *"); + mantis->mantis_int_stat = stat; + mantis->mantis_int_mask = mask; + lstat &= ~MANTIS_INT_I2CDONE; + } else { + dprintk(verbose, MANTIS_DEBUG, 0, + "* Unknown [%04x/%04x] *", stat, mask); + break; + } + i++; + if (i > interrupts) { + dprintk(verbose, MANTIS_ERROR, 1, "going Loopy ! -- BREAK --"); + break; + } + } + dprintk(verbose, MANTIS_DEBUG, 0, "] ===\n"); + + return IRQ_HANDLED; +} + + +static int __devinit mantis_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *mantis_pci_table) +{ + u8 revision, latency; + struct mantis_pci *mantis; + int ret = 0; + + devs++; + + mantis = kmalloc(sizeof (struct mantis_pci), GFP_KERNEL); + if (mantis == NULL) { + printk("%s: Out of memory\n", __func__); + ret = -ENOMEM; + goto err; + } + memset(mantis, 0, sizeof (struct mantis_pci)); + mantis->num = devs; + if (pci_enable_device(pdev)) { + dprintk(verbose, MANTIS_ERROR, 1, "Mantis PCI enable failed"); + ret = -ENODEV; + goto err; + } + mantis->mantis_addr = pci_resource_start(pdev, 0); + if (!request_mem_region(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0), DRIVER_NAME)) { + ret = -ENODEV; + goto err0; + } + + if ((mantis->mantis_mmio = ioremap(mantis->mantis_addr, 0x1000)) == NULL) { + dprintk(verbose, MANTIS_ERROR, 1, "IO remap failed"); + ret = -ENODEV; + goto err1; + } + + // Clear and disable all interrupts at startup + // to avoid lockup situations + mmwrite(0x00, MANTIS_INT_MASK); + if (request_irq(pdev->irq, mantis_pci_irq, IRQF_SHARED | IRQF_DISABLED, + DRIVER_NAME, mantis) < 0) { + + dprintk(verbose, MANTIS_ERROR, 1, "Mantis IRQ reg failed"); + ret = -ENODEV; + goto err2; + } + pci_set_master(pdev); + pci_set_drvdata(pdev, mantis); + pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency); + pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision); + mantis->latency = latency; + mantis->revision = revision; + mantis->pdev = pdev; + init_waitqueue_head(&mantis->i2c_wq); + + // CAM bypass + //mmwrite(mmread(MANTIS_INT_MASK) | MANTIS_INT_IRQ1, MANTIS_INT_MASK); + dprintk(verbose, MANTIS_INFO, 1, "gpif status: %04x irqcfg: %04x", mmread(0x9c), mmread(0x98)); + if ((mmread(0x9c) & 0x200) != 0) { //CAM inserted + msleep_interruptible(1); + if ((mmread(0x9c) & 0x200) != 0) + mmwrite(((mmread(0x98) | 0x01) & ~0x02), 0x98); + else + mmwrite(((mmread(0x98) | 0x02) & ~0x01), 0x98); + + } else { + mmwrite(((mmread(0x98) | 0x02) & ~0x01), 0x98); + } + mantis_set_direction(mantis, 0); + + // default latency if none specified + if (!latency) + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 32); + dprintk(verbose, MANTIS_ERROR, 0, "Mantis Rev %d, ", + mantis->revision); + + dprintk(verbose, MANTIS_ERROR, 0, + "irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p\n", + pdev->irq, mantis->latency, + mantis->mantis_addr, mantis->mantis_mmio); + + // No more PCI specific stuff ! + if (mantis_core_init(mantis) < 0) { + dprintk(verbose, MANTIS_ERROR, 1, "Mantis core init failed"); + ret = -ENODEV; + goto err2; + } + + return 0; + + // Error conditions .. +err2: + dprintk(verbose, MANTIS_DEBUG, 1, "Err: IO Unmap"); + if (mantis->mantis_mmio) + iounmap(mantis->mantis_mmio); +err1: + dprintk(verbose, MANTIS_DEBUG, 1, "Err: Release regions"); + release_mem_region(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + pci_disable_device(pdev); +err0: + dprintk(verbose, MANTIS_DEBUG, 1, "Err: Free"); + kfree(mantis); +err: + dprintk(verbose, MANTIS_DEBUG, 1, "Err:"); + return ret; +} + +static void __devexit mantis_pci_remove(struct pci_dev *pdev) +{ + struct mantis_pci *mantis = pci_get_drvdata(pdev); + + if (mantis == NULL) { + dprintk(verbose, MANTIS_ERROR, 1, "Aeio, Mantis NULL ptr"); + return; + } + mantis_core_exit(mantis); + dprintk(verbose, MANTIS_ERROR, 1, "Removing -->Mantis irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p", + pdev->irq, mantis->latency, mantis->mantis_addr, + mantis->mantis_mmio); + + free_irq(pdev->irq, mantis); + pci_release_regions(pdev); + if (mantis_dma_exit(mantis) < 0) + dprintk(verbose, MANTIS_ERROR, 1, "DMA exit failed"); + + pci_set_drvdata(pdev, NULL); + pci_disable_device(pdev); + kfree(mantis); +} + +static struct pci_driver mantis_pci_driver = { + .name = DRIVER_NAME, + .id_table = mantis_pci_table, + .probe = mantis_pci_probe, + .remove = mantis_pci_remove, +}; + +static int __devinit mantis_pci_init(void) +{ + return pci_register_driver(&mantis_pci_driver); +} + +static void __devexit mantis_pci_exit(void) +{ + pci_unregister_driver(&mantis_pci_driver); +} + +module_init(mantis_pci_init); +module_exit(mantis_pci_exit); + +MODULE_DESCRIPTION("Mantis PCI DTV bridge driver"); +MODULE_AUTHOR("Manu Abraham"); +MODULE_LICENSE("GPL"); |
