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-rw-r--r--drivers/usb/core/hcd.c17
-rw-r--r--drivers/usb/gadget/Kconfig29
-rw-r--r--drivers/usb/gadget/Makefile1
-rw-r--r--drivers/usb/gadget/fusb300_udc.c5
-rw-r--r--drivers/usb/gadget/gadget_chips.h8
-rw-r--r--drivers/usb/gadget/net2272.c2718
-rw-r--r--drivers/usb/gadget/net2272.h601
-rw-r--r--drivers/usb/host/ehci-hcd.c2
-rw-r--r--drivers/usb/host/ehci-s5p.c95
-rw-r--r--drivers/usb/host/xhci-dbg.c22
-rw-r--r--drivers/usb/host/xhci-mem.c26
-rw-r--r--drivers/usb/host/xhci-ring.c42
-rw-r--r--drivers/usb/host/xhci.c10
-rw-r--r--drivers/usb/host/xhci.h7
-rw-r--r--drivers/usb/renesas_usbhs/Makefile2
-rw-r--r--drivers/usb/renesas_usbhs/common.c11
-rw-r--r--drivers/usb/renesas_usbhs/common.h44
-rw-r--r--drivers/usb/renesas_usbhs/fifo.c994
-rw-r--r--drivers/usb/renesas_usbhs/fifo.h104
-rw-r--r--drivers/usb/renesas_usbhs/mod_gadget.c754
-rw-r--r--drivers/usb/renesas_usbhs/pipe.c293
-rw-r--r--drivers/usb/renesas_usbhs/pipe.h44
-rw-r--r--drivers/usb/wusbcore/cbaf.c4
23 files changed, 4915 insertions, 918 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index ace9f8442e5d..8669ba3fe794 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -337,6 +337,17 @@ static const u8 ss_rh_config_descriptor[] = {
0x02, 0x00 /* __le16 ss_wBytesPerInterval; 15 bits for max 15 ports */
};
+/* authorized_default behaviour:
+ * -1 is authorized for all devices except wireless (old behaviour)
+ * 0 is unauthorized for all devices
+ * 1 is authorized for all devices
+ */
+static int authorized_default = -1;
+module_param(authorized_default, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(authorized_default,
+ "Default USB device authorization: 0 is not authorized, 1 is "
+ "authorized, -1 is authorized except for wireless USB (default, "
+ "old behaviour");
/*-------------------------------------------------------------------------*/
/**
@@ -2371,7 +2382,11 @@ int usb_add_hcd(struct usb_hcd *hcd,
dev_info(hcd->self.controller, "%s\n", hcd->product_desc);
- hcd->authorized_default = hcd->wireless? 0 : 1;
+ /* Keep old behaviour if authorized_default is not in [0, 1]. */
+ if (authorized_default < 0 || authorized_default > 1)
+ hcd->authorized_default = hcd->wireless? 0 : 1;
+ else
+ hcd->authorized_default = authorized_default;
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
/* HC is in reset state, but accessible. Now do the one-time init,
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 029e288805b6..9468adbe42bb 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -480,6 +480,35 @@ config USB_CI13XXX_PCI
default USB_GADGET
select USB_GADGET_SELECTED
+config USB_GADGET_NET2272
+ boolean "PLX NET2272"
+ select USB_GADGET_DUALSPEED
+ help
+ PLX NET2272 is a USB peripheral controller which supports
+ both full and high speed USB 2.0 data transfers.
+
+ It has three configurable endpoints, as well as endpoint zero
+ (for control transfer).
+ Say "y" to link the driver statically, or "m" to build a
+ dynamically linked module called "net2272" and force all
+ gadget drivers to also be dynamically linked.
+
+config USB_GADGET_NET2272_DMA
+ boolean "Support external DMA controller"
+ depends on USB_GADGET_NET2272
+ help
+ The NET2272 part can optionally support an external DMA
+ controller, but your board has to have support in the
+ driver itself.
+
+ If unsure, say "N" here. The driver works fine in PIO mode.
+
+config USB_NET2272
+ tristate
+ depends on USB_GADGET_NET2272
+ default USB_GADGET
+ select USB_GADGET_SELECTED
+
config USB_GADGET_NET2280
boolean "NetChip 228x"
depends on PCI
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 4fe92b18a055..345261738b13 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -4,6 +4,7 @@
ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG
obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o
+obj-$(CONFIG_USB_NET2272) += net2272.o
obj-$(CONFIG_USB_NET2280) += net2280.o
obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o
obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o
diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c
index 763d462454b9..b82a1149145a 100644
--- a/drivers/usb/gadget/fusb300_udc.c
+++ b/drivers/usb/gadget/fusb300_udc.c
@@ -980,11 +980,6 @@ static void set_address(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
} \
} while (0)
-static void fusb300_ep0_complete(struct usb_ep *ep,
- struct usb_request *req)
-{
-}
-
static int setup_packet(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
{
u8 *p = (u8 *)ctrl;
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index bcdac7c73e89..13c2f9e94405 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -15,6 +15,12 @@
#ifndef __GADGET_CHIPS_H
#define __GADGET_CHIPS_H
+#ifdef CONFIG_USB_GADGET_NET2272
+#define gadget_is_net2272(g) !strcmp("net2272", (g)->name)
+#else
+#define gadget_is_net2272(g) 0
+#endif
+
#ifdef CONFIG_USB_GADGET_NET2280
#define gadget_is_net2280(g) !strcmp("net2280", (g)->name)
#else
@@ -223,6 +229,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
return 0x29;
else if (gadget_is_s3c_hsudc(gadget))
return 0x30;
+ else if (gadget_is_net2272(gadget))
+ return 0x31;
return -ENOENT;
}
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
new file mode 100644
index 000000000000..29151c44f476
--- /dev/null
+++ b/drivers/usb/gadget/net2272.c
@@ -0,0 +1,2718 @@
+/*
+ * Driver for PLX NET2272 USB device controller
+ *
+ * Copyright (C) 2005-2006 PLX Technology, Inc.
+ * Copyright (C) 2006-2011 Analog Devices, Inc.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+
+#include "net2272.h"
+
+#define DRIVER_DESC "PLX NET2272 USB Peripheral Controller"
+
+static const char driver_name[] = "net2272";
+static const char driver_vers[] = "2006 October 17/mainline";
+static const char driver_desc[] = DRIVER_DESC;
+
+static const char ep0name[] = "ep0";
+static const char * const ep_name[] = {
+ ep0name,
+ "ep-a", "ep-b", "ep-c",
+};
+
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+#ifdef CONFIG_USB_GADGET_NET2272_DMA
+/*
+ * use_dma: the NET2272 can use an external DMA controller.
+ * Note that since there is no generic DMA api, some functions,
+ * notably request_dma, start_dma, and cancel_dma will need to be
+ * modified for your platform's particular dma controller.
+ *
+ * If use_dma is disabled, pio will be used instead.
+ */
+static int use_dma = 0;
+module_param(use_dma, bool, 0644);
+
+/*
+ * dma_ep: selects the endpoint for use with dma (1=ep-a, 2=ep-b)
+ * The NET2272 can only use dma for a single endpoint at a time.
+ * At some point this could be modified to allow either endpoint
+ * to take control of dma as it becomes available.
+ *
+ * Note that DMA should not be used on OUT endpoints unless it can
+ * be guaranteed that no short packets will arrive on an IN endpoint
+ * while the DMA operation is pending. Otherwise the OUT DMA will
+ * terminate prematurely (See NET2272 Errata 630-0213-0101)
+ */
+static ushort dma_ep = 1;
+module_param(dma_ep, ushort, 0644);
+
+/*
+ * dma_mode: net2272 dma mode setting (see LOCCTL1 definiton):
+ * mode 0 == Slow DREQ mode
+ * mode 1 == Fast DREQ mode
+ * mode 2 == Burst mode
+ */
+static ushort dma_mode = 2;
+module_param(dma_mode, ushort, 0644);
+#else
+#define use_dma 0
+#define dma_ep 1
+#define dma_mode 2
+#endif
+
+/*
+ * fifo_mode: net2272 buffer configuration:
+ * mode 0 == ep-{a,b,c} 512db each
+ * mode 1 == ep-a 1k, ep-{b,c} 512db
+ * mode 2 == ep-a 1k, ep-b 1k, ep-c 512db
+ * mode 3 == ep-a 1k, ep-b disabled, ep-c 512db
+ */
+static ushort fifo_mode = 0;
+module_param(fifo_mode, ushort, 0644);
+
+/*
+ * enable_suspend: When enabled, the driver will respond to
+ * USB suspend requests by powering down the NET2272. Otherwise,
+ * USB suspend requests will be ignored. This is acceptible for
+ * self-powered devices. For bus powered devices set this to 1.
+ */
+static ushort enable_suspend = 0;
+module_param(enable_suspend, ushort, 0644);
+
+static void assert_out_naking(struct net2272_ep *ep, const char *where)
+{
+ u8 tmp;
+
+#ifndef DEBUG
+ return;
+#endif
+
+ tmp = net2272_ep_read(ep, EP_STAT0);
+ if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) {
+ dev_dbg(ep->dev->dev, "%s %s %02x !NAK\n",
+ ep->ep.name, where, tmp);
+ net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+ }
+}
+#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep, __func__)
+
+static void stop_out_naking(struct net2272_ep *ep)
+{
+ u8 tmp = net2272_ep_read(ep, EP_STAT0);
+
+ if ((tmp & (1 << NAK_OUT_PACKETS)) != 0)
+ net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+}
+
+#define PIPEDIR(bAddress) (usb_pipein(bAddress) ? "in" : "out")
+
+static char *type_string(u8 bmAttributes)
+{
+ switch ((bmAttributes) & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_BULK: return "bulk";
+ case USB_ENDPOINT_XFER_ISOC: return "iso";
+ case USB_ENDPOINT_XFER_INT: return "intr";
+ default: return "control";
+ }
+}
+
+static char *buf_state_string(unsigned state)
+{
+ switch (state) {
+ case BUFF_FREE: return "free";
+ case BUFF_VALID: return "valid";
+ case BUFF_LCL: return "local";
+ case BUFF_USB: return "usb";
+ default: return "unknown";
+ }
+}
+
+static char *dma_mode_string(void)
+{
+ if (!use_dma)
+ return "PIO";
+ switch (dma_mode) {
+ case 0: return "SLOW DREQ";
+ case 1: return "FAST DREQ";
+ case 2: return "BURST";
+ default: return "invalid";
+ }
+}
+
+static void net2272_dequeue_all(struct net2272_ep *);
+static int net2272_kick_dma(struct net2272_ep *, struct net2272_request *);
+static int net2272_fifo_status(struct usb_ep *);
+
+static struct usb_ep_ops net2272_ep_ops;
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+{
+ struct net2272 *dev;
+ struct net2272_ep *ep;
+ u32 max;
+ u8 tmp;
+ unsigned long flags;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || !desc || ep->desc || _ep->name == ep0name
+ || desc->bDescriptorType != USB_DT_ENDPOINT)
+ return -EINVAL;
+ dev = ep->dev;
+ if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+
+ max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ _ep->maxpacket = max & 0x7fff;
+ ep->desc = desc;
+
+ /* net2272_ep_reset() has already been called */
+ ep->stopped = 0;
+ ep->wedged = 0;
+
+ /* set speed-dependent max packet */
+ net2272_ep_write(ep, EP_MAXPKT0, max & 0xff);
+ net2272_ep_write(ep, EP_MAXPKT1, (max & 0xff00) >> 8);
+
+ /* set type, direction, address; reset fifo counters */
+ net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+ tmp = usb_endpoint_type(desc);
+ if (usb_endpoint_xfer_bulk(desc)) {
+ /* catch some particularly blatant driver bugs */
+ if ((dev->gadget.speed == USB_SPEED_HIGH && max != 512) ||
+ (dev->gadget.speed == USB_SPEED_FULL && max > 64)) {
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return -ERANGE;
+ }
+ }
+ ep->is_iso = usb_endpoint_xfer_isoc(desc) ? 1 : 0;
+ tmp <<= ENDPOINT_TYPE;
+ tmp |= ((desc->bEndpointAddress & 0x0f) << ENDPOINT_NUMBER);
+ tmp |= usb_endpoint_dir_in(desc) << ENDPOINT_DIRECTION;
+ tmp |= (1 << ENDPOINT_ENABLE);
+
+ /* for OUT transfers, block the rx fifo until a read is posted */
+ ep->is_in = usb_endpoint_dir_in(desc);
+ if (!ep->is_in)
+ net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+
+ net2272_ep_write(ep, EP_CFG, tmp);
+
+ /* enable irqs */
+ tmp = (1 << ep->num) | net2272_read(dev, IRQENB0);
+ net2272_write(dev, IRQENB0, tmp);
+
+ tmp = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+ | net2272_ep_read(ep, EP_IRQENB);
+ net2272_ep_write(ep, EP_IRQENB, tmp);
+
+ tmp = desc->bEndpointAddress;
+ dev_dbg(dev->dev, "enabled %s (ep%d%s-%s) max %04x cfg %02x\n",
+ _ep->name, tmp & 0x0f, PIPEDIR(tmp),
+ type_string(desc->bmAttributes), max,
+ net2272_ep_read(ep, EP_CFG));
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return 0;
+}
+
+static void net2272_ep_reset(struct net2272_ep *ep)
+{
+ u8 tmp;
+
+ ep->desc = NULL;
+ INIT_LIST_HEAD(&ep->queue);
+
+ ep->ep.maxpacket = ~0;
+ ep->ep.ops = &net2272_ep_ops;
+
+ /* disable irqs, endpoint */
+ net2272_ep_write(ep, EP_IRQENB, 0);
+
+ /* init to our chosen defaults, notably so that we NAK OUT
+ * packets until the driver queues a read.
+ */
+ tmp = (1 << NAK_OUT_PACKETS_MODE) | (1 << ALT_NAK_OUT_PACKETS);
+ net2272_ep_write(ep, EP_RSPSET, tmp);
+
+ tmp = (1 << INTERRUPT_MODE) | (1 << HIDE_STATUS_PHASE);
+ if (ep->num != 0)
+ tmp |= (1 << ENDPOINT_TOGGLE) | (1 << ENDPOINT_HALT);
+
+ net2272_ep_write(ep, EP_RSPCLR, tmp);
+
+ /* scrub most status bits, and flush any fifo state */
+ net2272_ep_write(ep, EP_STAT0,
+ (1 << DATA_IN_TOKEN_INTERRUPT)
+ | (1 << DATA_OUT_TOKEN_INTERRUPT)
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)
+ | (1 << DATA_PACKET_RECEIVED_INTERRUPT)
+ | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT));
+
+ net2272_ep_write(ep, EP_STAT1,
+ (1 << TIMEOUT)
+ | (1 << USB_OUT_ACK_SENT)
+ | (1 << USB_OUT_NAK_SENT)
+ | (1 << USB_IN_ACK_RCVD)
+ | (1 << USB_IN_NAK_SENT)
+ | (1 << USB_STALL_SENT)
+ | (1 << LOCAL_OUT_ZLP)
+ | (1 << BUFFER_FLUSH));
+
+ /* fifo size is handled seperately */
+}
+
+static int net2272_disable(struct usb_ep *_ep)
+{
+ struct net2272_ep *ep;
+ unsigned long flags;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || !ep->desc || _ep->name == ep0name)
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+ net2272_dequeue_all(ep);
+ net2272_ep_reset(ep);
+
+ dev_vdbg(ep->dev->dev, "disabled %s\n", _ep->name);
+
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+ return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static struct usb_request *
+net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+ struct net2272_ep *ep;
+ struct net2272_request *req;
+
+ if (!_ep)
+ return NULL;
+ ep = container_of(_ep, struct net2272_ep, ep);
+
+ req = kzalloc(sizeof(*req), gfp_flags);
+ if (!req)
+ return NULL;
+
+ req->req.dma = DMA_ADDR_INVALID;
+ INIT_LIST_HEAD(&req->queue);
+
+ return &req->req;
+}
+
+static void
+net2272_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct net2272_ep *ep;
+ struct net2272_request *req;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || !_req)
+ return;
+
+ req = container_of(_req, struct net2272_request, req);
+ WARN_ON(!list_empty(&req->queue));
+ kfree(req);
+}
+
+static void
+net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status)
+{
+ struct net2272 *dev;
+ unsigned stopped = ep->stopped;
+
+ if (ep->num == 0) {
+ if (ep->dev->protocol_stall) {
+ ep->stopped = 1;
+ set_halt(ep);
+ }
+ allow_status(ep);
+ }
+
+ list_del_init(&req->queue);
+
+ if (req->req.status == -EINPROGRESS)
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ dev = ep->dev;
+ if (use_dma && req->mapped) {
+ dma_unmap_single(dev->dev, req->req.dma, req->req.length,
+ ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->req.dma = DMA_ADDR_INVALID;
+ req->mapped = 0;
+ }
+
+ if (status && status != -ESHUTDOWN)
+ dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n",
+ ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length, req->req.buf);
+
+ /* don't modify queue heads during completion callback */
+ ep->stopped = 1;
+ spin_unlock(&dev->lock);
+ req->req.complete(&ep->ep, &req->req);
+ spin_lock(&dev->lock);
+ ep->stopped = stopped;
+}
+
+static int
+net2272_write_packet(struct net2272_ep *ep, u8 *buf,
+ struct net2272_request *req, unsigned max)
+{
+ u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA);
+ u16 *bufp;
+ unsigned length, count;
+ u8 tmp;
+
+ length = min(req->req.length - req->req.actual, max);
+ req->req.actual += length;
+
+ dev_vdbg(ep->dev->dev, "write packet %s req %p max %u len %u avail %u\n",
+ ep->ep.name, req, max, length,
+ (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0));
+
+ count = length;
+ bufp = (u16 *)buf;
+
+ while (likely(count >= 2)) {
+ /* no byte-swap required; chip endian set during init */
+ writew(*bufp++, ep_data);
+ count -= 2;
+ }
+ buf = (u8 *)bufp;
+
+ /* write final byte by placing the NET2272 into 8-bit mode */
+ if (unlikely(count)) {
+ tmp = net2272_read(ep->dev, LOCCTL);
+ net2272_write(ep->dev, LOCCTL, tmp & ~(1 << DATA_WIDTH));
+ writeb(*buf, ep_data);
+ net2272_write(ep->dev, LOCCTL, tmp);
+ }
+ return length;
+}
+
+/* returns: 0: still running, 1: completed, negative: errno */
+static int
+net2272_write_fifo(struct net2272_ep *ep, struct net2272_request *req)
+{
+ u8 *buf;
+ unsigned count, max;
+ int status;
+
+ dev_vdbg(ep->dev->dev, "write_fifo %s actual %d len %d\n",
+ ep->ep.name, req->req.actual, req->req.length);
+
+ /*
+ * Keep loading the endpoint until the final packet is loaded,
+ * or the endpoint buffer is full.
+ */
+ top:
+ /*
+ * Clear interrupt status
+ * - Packet Transmitted interrupt will become set again when the
+ * host successfully takes another packet
+ */
+ net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT));
+ while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_FULL))) {
+ buf = req->req.buf + req->req.actual;
+ prefetch(buf);
+
+ /* force pagesel */
+ net2272_ep_read(ep, EP_STAT0);
+
+ max = (net2272_ep_read(ep, EP_AVAIL1) << 8) |
+ (net2272_ep_read(ep, EP_AVAIL0));
+
+ if (max < ep->ep.maxpacket)
+ max = (net2272_ep_read(ep, EP_AVAIL1) << 8)
+ | (net2272_ep_read(ep, EP_AVAIL0));
+
+ count = net2272_write_packet(ep, buf, req, max);
+ /* see if we are done */
+ if (req->req.length == req->req.actual) {
+ /* validate short or zlp packet */
+ if (count < ep->ep.maxpacket)
+ set_fifo_bytecount(ep, 0);
+ net2272_done(ep, req, 0);
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct net2272_request,
+ queue);
+ status = net2272_kick_dma(ep, req);
+
+ if (status < 0)
+ if ((net2272_ep_read(ep, EP_STAT0)
+ & (1 << BUFFER_EMPTY)))
+ goto top;
+ }
+ return 1;
+ }
+ net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT));
+ }
+ return 0;
+}
+
+static void
+net2272_out_flush(struct net2272_ep *ep)
+{
+ ASSERT_OUT_NAKING(ep);
+
+ net2272_ep_write(ep, EP_STAT0, (1 << DATA_OUT_TOKEN_INTERRUPT)
+ | (1 << DATA_PACKET_RECEIVED_INTERRUPT));
+ net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+}
+
+static int
+net2272_read_packet(struct net2272_ep *ep, u8 *buf,
+ struct net2272_request *req, unsigned avail)
+{
+ u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA);
+ unsigned is_short;
+ u16 *bufp;
+
+ req->req.actual += avail;
+
+ dev_vdbg(ep->dev->dev, "read packet %s req %p len %u avail %u\n",
+ ep->ep.name, req, avail,
+ (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0));
+
+ is_short = (avail < ep->ep.maxpacket);
+
+ if (unlikely(avail == 0)) {
+ /* remove any zlp from the buffer */
+ (void)readw(ep_data);
+ return is_short;
+ }
+
+ /* Ensure we get the final byte */
+ if (unlikely(avail % 2))
+ avail++;
+ bufp = (u16 *)buf;
+
+ do {
+ *bufp++ = readw(ep_data);
+ avail -= 2;
+ } while (avail);
+
+ /*
+ * To avoid false endpoint available race condition must read
+ * ep stat0 twice in the case of a short transfer
+ */
+ if (net2272_ep_read(ep, EP_STAT0) & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT))
+ net2272_ep_read(ep, EP_STAT0);
+
+ return is_short;
+}
+
+static int
+net2272_read_fifo(struct net2272_ep *ep, struct net2272_request *req)
+{
+ u8 *buf;
+ unsigned is_short;
+ int count;
+ int tmp;
+ int cleanup = 0;
+ int status = -1;
+
+ dev_vdbg(ep->dev->dev, "read_fifo %s actual %d len %d\n",
+ ep->ep.name, req->req.actual, req->req.length);
+
+ top:
+ do {
+ buf = req->req.buf + req->req.actual;
+ prefetchw(buf);
+
+ count = (net2272_ep_read(ep, EP_AVAIL1) << 8)
+ | net2272_ep_read(ep, EP_AVAIL0);
+
+ net2272_ep_write(ep, EP_STAT0,
+ (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT) |
+ (1 << DATA_PACKET_RECEIVED_INTERRUPT));
+
+ tmp = req->req.length - req->req.actual;
+
+ if (count > tmp) {
+ if ((tmp % ep->ep.maxpacket) != 0) {
+ dev_err(ep->dev->dev,
+ "%s out fifo %d bytes, expected %d\n",
+ ep->ep.name, count, tmp);
+ cleanup = 1;
+ }
+ count = (tmp > 0) ? tmp : 0;
+ }
+
+ is_short = net2272_read_packet(ep, buf, req, count);
+
+ /* completion */
+ if (unlikely(cleanup || is_short ||
+ ((req->req.actual == req->req.length)
+ && !req->req.zero))) {
+
+ if (cleanup) {
+ net2272_out_flush(ep);
+ net2272_done(ep, req, -EOVERFLOW);
+ } else
+ net2272_done(ep, req, 0);
+
+ /* re-initialize endpoint transfer registers
+ * otherwise they may result in erroneous pre-validation
+ * for subsequent control reads
+ */
+ if (unlikely(ep->num == 0)) {
+ net2272_ep_write(ep, EP_TRANSFER2, 0);
+ net2272_ep_write(ep, EP_TRANSFER1, 0);
+ net2272_ep_write(ep, EP_TRANSFER0, 0);
+ }
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct net2272_request, queue);
+ status = net2272_kick_dma(ep, req);
+ if ((status < 0) &&
+ !(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY)))
+ goto top;
+ }
+ return 1;
+ }
+ } while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY)));
+
+ return 0;
+}
+
+static void
+net2272_pio_advance(struct net2272_ep *ep)
+{
+ struct net2272_request *req;
+
+ if (unlikely(list_empty(&ep->queue)))
+ return;
+
+ req = list_entry(ep->queue.next, struct net2272_request, queue);
+ (ep->is_in ? net2272_write_fifo : net2272_read_fifo)(ep, req);
+}
+
+/* returns 0 on success, else negative errno */
+static int
+net2272_request_dma(struct net2272 *dev, unsigned ep, u32 buf,
+ unsigned len, unsigned dir)
+{
+ dev_vdbg(dev->dev, "request_dma ep %d buf %08x len %d dir %d\n",
+ ep, buf, len, dir);
+
+ /* The NET2272 only supports a single dma channel */
+ if (dev->dma_busy)
+ return -EBUSY;
+ /*
+ * EP_TRANSFER (used to determine the number of bytes received
+ * in an OUT transfer) is 24 bits wide; don't ask for more than that.
+ */
+ if ((dir == 1) && (len > 0x1000000))
+ return -EINVAL;
+
+ dev->dma_busy = 1;
+
+ /* initialize platform's dma */
+#ifdef CONFIG_PCI
+ /* NET2272 addr, buffer addr, length, etc. */
+ switch (dev->dev_id) {
+ case PCI_DEVICE_ID_RDK1:
+ /* Setup PLX 9054 DMA mode */
+ writel((1 << LOCAL_BUS_WIDTH) |
+ (1 << TA_READY_INPUT_ENABLE) |
+ (0 << LOCAL_BURST_ENABLE) |
+ (1 << DONE_INTERRUPT_ENABLE) |
+ (1 << LOCAL_ADDRESSING_MODE) |
+ (1 << DEMAND_MODE) |
+ (1 << DMA_EOT_ENABLE) |
+ (1 << FAST_SLOW_TERMINATE_MODE_SELECT) |
+ (1 << DMA_CHANNEL_INTERRUPT_SELECT),
+ dev->rdk1.plx9054_base_addr + DMAMODE0);
+
+ writel(0x100000, dev->rdk1.plx9054_base_addr + DMALADR0);
+ writel(buf, dev->rdk1.plx9054_base_addr + DMAPADR0);
+ writel(len, dev->rdk1.plx9054_base_addr + DMASIZ0);
+ writel((dir << DIRECTION_OF_TRANSFER) |
+ (1 << INTERRUPT_AFTER_TERMINAL_COUNT),
+ dev->rdk1.plx9054_base_addr + DMADPR0);
+ writel((1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE) |
+ readl(dev->rdk1.plx9054_base_addr + INTCSR),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+
+ break;
+ }
+#endif
+
+ net2272_write(dev, DMAREQ,
+ (0 << DMA_BUFFER_VALID) |
+ (1 << DMA_REQUEST_ENABLE) |
+ (1 << DMA_CONTROL_DACK) |
+ (dev->dma_eot_polarity << EOT_POLARITY) |
+ (dev->dma_dack_polarity << DACK_POLARITY) |
+ (dev->dma_dreq_polarity << DREQ_POLARITY) |
+ ((ep >> 1) << DMA_ENDPOINT_SELECT));
+
+ (void) net2272_read(dev, SCRATCH);
+
+ return 0;
+}
+
+static void
+net2272_start_dma(struct net2272 *dev)
+{
+ /* start platform's dma controller */
+#ifdef CONFIG_PCI
+ switch (dev->dev_id) {
+ case PCI_DEVICE_ID_RDK1:
+ writeb((1 << CHANNEL_ENABLE) | (1 << CHANNEL_START),
+ dev->rdk1.plx9054_base_addr + DMACSR0);
+ break;
+ }
+#endif
+}
+
+/* returns 0 on success, else negative errno */
+static int
+net2272_kick_dma(struct net2272_ep *ep, struct net2272_request *req)
+{
+ unsigned size;
+ u8 tmp;
+
+ if (!use_dma || (ep->num < 1) || (ep->num > 2) || !ep->dma)
+ return -EINVAL;
+
+ /* don't use dma for odd-length transfers
+ * otherwise, we'd need to deal with the last byte with pio
+ */
+ if (req->req.length & 1)
+ return -EINVAL;
+
+ dev_vdbg(ep->dev->dev, "kick_dma %s req %p dma %08x\n",
+ ep->ep.name, req, req->req.dma);
+
+ net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+
+ /* The NET2272 can only use DMA on one endpoint at a time */
+ if (ep->dev->dma_busy)
+ return -EBUSY;
+
+ /* Make sure we only DMA an even number of bytes (we'll use
+ * pio to complete the transfer)
+ */
+ size = req->req.length;
+ size &= ~1;
+
+ /* device-to-host transfer */
+ if (ep->is_in) {
+ /* initialize platform's dma controller */
+ if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 0))
+ /* unable to obtain DMA channel; return error and use pio mode */
+ return -EBUSY;
+ req->req.actual += size;
+
+ /* host-to-device transfer */
+ } else {
+ tmp = net2272_ep_read(ep, EP_STAT0);
+
+ /* initialize platform's dma controller */
+ if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 1))
+ /* unable to obtain DMA channel; return error and use pio mode */
+ return -EBUSY;
+
+ if (!(tmp & (1 << BUFFER_EMPTY)))
+ ep->not_empty = 1;
+ else
+ ep->not_empty = 0;
+
+
+ /* allow the endpoint's buffer to fill */
+ net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+
+ /* this transfer completed and data's already in the fifo
+ * return error so pio gets used.
+ */
+ if (tmp & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
+
+ /* deassert dreq */
+ net2272_write(ep->dev, DMAREQ,
+ (0 << DMA_BUFFER_VALID) |
+ (0 << DMA_REQUEST_ENABLE) |
+ (1 << DMA_CONTROL_DACK) |
+ (ep->dev->dma_eot_polarity << EOT_POLARITY) |
+ (ep->dev->dma_dack_polarity << DACK_POLARITY) |
+ (ep->dev->dma_dreq_polarity << DREQ_POLARITY) |
+ ((ep->num >> 1) << DMA_ENDPOINT_SELECT));
+
+ return -EBUSY;
+ }
+ }
+
+ /* Don't use per-packet interrupts: use dma interrupts only */
+ net2272_ep_write(ep, EP_IRQENB, 0);
+
+ net2272_start_dma(ep->dev);
+
+ return 0;
+}
+
+static void net2272_cancel_dma(struct net2272 *dev)
+{
+#ifdef CONFIG_PCI
+ switch (dev->dev_id) {
+ case PCI_DEVICE_ID_RDK1:
+ writeb(0, dev->rdk1.plx9054_base_addr + DMACSR0);
+ writeb(1 << CHANNEL_ABORT, dev->rdk1.plx9054_base_addr + DMACSR0);
+ while (!(readb(dev->rdk1.plx9054_base_addr + DMACSR0) &
+ (1 << CHANNEL_DONE)))
+ continue; /* wait for dma to stabalize */
+
+ /* dma abort generates an interrupt */
+ writeb(1 << CHANNEL_CLEAR_INTERRUPT,
+ dev->rdk1.plx9054_base_addr + DMACSR0);
+ break;
+ }
+#endif
+
+ dev->dma_busy = 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct net2272_request *req;
+ struct net2272_ep *ep;
+ struct net2272 *dev;
+ unsigned long flags;
+ int status = -1;
+ u8 s;
+
+ req = container_of(_req, struct net2272_request, req);
+ if (!_req || !_req->complete || !_req->buf
+ || !list_empty(&req->queue))
+ return -EINVAL;
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || (!ep->desc && ep->num != 0))
+ return -EINVAL;
+ dev = ep->dev;
+ if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+
+ /* set up dma mapping in case the caller didn't */
+ if (use_dma && ep->dma && _req->dma == DMA_ADDR_INVALID) {
+ _req->dma = dma_map_single(dev->dev, _req->buf, _req->length,
+ ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ req->mapped = 1;
+ }
+
+ dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08x %s\n",
+ _ep->name, _req, _req->length, _req->buf,
+ _req->dma, _req->zero ? "zero" : "!zero");
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ _req->status = -EINPROGRESS;
+ _req->actual = 0;
+
+ /* kickstart this i/o queue? */
+ if (list_empty(&ep->queue) && !ep->stopped) {
+ /* maybe there's no control data, just status ack */
+ if (ep->num == 0 && _req->length == 0) {
+ net2272_done(ep, req, 0);
+ dev_vdbg(dev->dev, "%s status ack\n", ep->ep.name);
+ goto done;
+ }
+
+ /* Return zlp, don't let it block subsequent packets */
+ s = net2272_ep_read(ep, EP_STAT0);
+ if (s & (1 << BUFFER_EMPTY)) {
+ /* Buffer is empty check for a blocking zlp, handle it */
+ if ((s & (1 << NAK_OUT_PACKETS)) &&
+ net2272_ep_read(ep, EP_STAT1) & (1 << LOCAL_OUT_ZLP)) {
+ dev_dbg(dev->dev, "WARNING: returning ZLP short packet termination!\n");
+ /*
+ * Request is going to terminate with a short packet ...
+ * hope the client is ready for it!
+ */
+ status = net2272_read_fifo(ep, req);
+ /* clear short packet naking */
+ net2272_ep_write(ep, EP_STAT0, (1 << NAK_OUT_PACKETS));
+ goto done;
+ }
+ }
+
+ /* try dma first */
+ status = net2272_kick_dma(ep, req);
+
+ if (status < 0) {
+ /* dma failed (most likely in use by another endpoint)
+ * fallback to pio
+ */
+ status = 0;
+
+ if (ep->is_in)
+ status = net2272_write_fifo(ep, req);
+ else {
+ s = net2272_ep_read(ep, EP_STAT0);
+ if ((s & (1 << BUFFER_EMPTY)) == 0)
+ status = net2272_read_fifo(ep, req);
+ }
+
+ if (unlikely(status != 0)) {
+ if (status > 0)
+ status = 0;
+ req = NULL;
+ }
+ }
+ }
+ if (likely(req != 0))
+ list_add_tail(&req->queue, &ep->queue);
+
+ if (likely(!list_empty(&ep->queue)))
+ net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+ done:
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return 0;
+}
+
+/* dequeue ALL requests */
+static void
+net2272_dequeue_all(struct net2272_ep *ep)
+{
+ struct net2272_request *req;
+
+ /* called with spinlock held */
+ ep->stopped = 1;
+
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct net2272_request,
+ queue);
+ net2272_done(ep, req, -ESHUTDOWN);
+ }
+}
+
+/* dequeue JUST ONE request */
+static int
+net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct net2272_ep *ep;
+ struct net2272_request *req;
+ unsigned long flags;
+ int stopped;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || (!ep->desc && ep->num != 0) || !_req)
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+ stopped = ep->stopped;
+ ep->stopped = 1;
+
+ /* make sure it's still queued on this endpoint */
+ list_for_each_entry(req, &ep->queue, queue) {
+ if (&req->req == _req)
+ break;
+ }
+ if (&req->req != _req) {
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+ return -EINVAL;
+ }
+
+ /* queue head may be partially complete */
+ if (ep->queue.next == &req->queue) {
+ dev_dbg(ep->dev->dev, "unlink (%s) pio\n", _ep->name);
+ net2272_done(ep, req, -ECONNRESET);
+ }
+ req = NULL;
+ ep->stopped = stopped;
+
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+ return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
+{
+ struct net2272_ep *ep;
+ unsigned long flags;
+ int ret = 0;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || (!ep->desc && ep->num != 0))
+ return -EINVAL;
+ if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+ if (ep->desc /* not ep0 */ && usb_endpoint_xfer_isoc(ep->desc))
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+ if (!list_empty(&ep->queue))
+ ret = -EAGAIN;
+ else if (ep->is_in && value && net2272_fifo_status(_ep) != 0)
+ ret = -EAGAIN;
+ else {
+ dev_vdbg(ep->dev->dev, "%s %s %s\n", _ep->name,
+ value ? "set" : "clear",
+ wedged ? "wedge" : "halt");
+ /* set/clear */
+ if (value) {
+ if (ep->num == 0)
+ ep->dev->protocol_stall = 1;
+ else
+ set_halt(ep);
+ if (wedged)
+ ep->wedged = 1;
+ } else {
+ clear_halt(ep);
+ ep->wedged = 0;
+ }
+ }
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+
+ return ret;
+}
+
+static int
+net2272_set_halt(struct usb_ep *_ep, int value)
+{
+ return net2272_set_halt_and_wedge(_ep, value, 0);
+}
+
+static int
+net2272_set_wedge(struct usb_ep *_ep)
+{
+ if (!_ep || _ep->name == ep0name)
+ return -EINVAL;
+ return net2272_set_halt_and_wedge(_ep, 1, 1);
+}
+
+static int
+net2272_fifo_status(struct usb_ep *_ep)
+{
+ struct net2272_ep *ep;
+ u16 avail;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || (!ep->desc && ep->num != 0))
+ return -ENODEV;
+ if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+
+ avail = net2272_ep_read(ep, EP_AVAIL1) << 8;
+ avail |= net2272_ep_read(ep, EP_AVAIL0);
+ if (avail > ep->fifo_size)
+ return -EOVERFLOW;
+ if (ep->is_in)
+ avail = ep->fifo_size - avail;
+ return avail;
+}
+
+static void
+net2272_fifo_flush(struct usb_ep *_ep)
+{
+ struct net2272_ep *ep;
+
+ ep = container_of(_ep, struct net2272_ep, ep);
+ if (!_ep || (!ep->desc && ep->num != 0))
+ return;
+ if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+ return;
+
+ net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+}
+
+static struct usb_ep_ops net2272_ep_ops = {
+ .enable = net2272_enable,
+ .disable = net2272_disable,
+
+ .alloc_request = net2272_alloc_request,
+ .free_request = net2272_free_request,
+
+ .queue = net2272_queue,
+ .dequeue = net2272_dequeue,
+
+ .set_halt = net2272_set_halt,
+ .set_wedge = net2272_set_wedge,
+ .fifo_status = net2272_fifo_status,
+ .fifo_flush = net2272_fifo_flush,
+};
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_get_frame(struct usb_gadget *_gadget)
+{
+ struct net2272 *dev;
+ unsigned long flags;
+ u16 ret;
+
+ if (!_gadget)
+ return -ENODEV;
+ dev = container_of(_gadget, struct net2272, gadget);
+ spin_lock_irqsave(&dev->lock, flags);
+
+ ret = net2272_read(dev, FRAME1) << 8;
+ ret |= net2272_read(dev, FRAME0);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return ret;
+}
+
+static int
+net2272_wakeup(struct usb_gadget *_gadget)
+{
+ struct net2272 *dev;
+ u8 tmp;
+ unsigned long flags;
+
+ if (!_gadget)
+ return 0;
+ dev = container_of(_gadget, struct net2272, gadget);
+
+ spin_lock_irqsave(&dev->lock, flags);
+ tmp = net2272_read(dev, USBCTL0);
+ if (tmp & (1 << IO_WAKEUP_ENABLE))
+ net2272_write(dev, USBCTL1, (1 << GENERATE_RESUME));
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return 0;
+}
+
+static int
+net2272_set_selfpowered(struct usb_gadget *_gadget, int value)
+{
+ struct net2272 *dev;
+
+ if (!_gadget)
+ return -ENODEV;
+ dev = container_of(_gadget, struct net2272, gadget);
+
+ dev->is_selfpowered = value;
+
+ return 0;
+}
+
+static int
+net2272_pullup(struct usb_gadget *_gadget, int is_on)
+{
+ struct net2272 *dev;
+ u8 tmp;
+ unsigned long flags;
+
+ if (!_gadget)
+ return -ENODEV;
+ dev = container_of(_gadget, struct net2272, gadget);
+
+ spin_lock_irqsave(&dev->lock, flags);
+ tmp = net2272_read(dev, USBCTL0);
+ dev->softconnect = (is_on != 0);
+ if (is_on)
+ tmp |= (1 << USB_DETECT_ENABLE);
+ else
+ tmp &= ~(1 << USB_DETECT_ENABLE);
+ net2272_write(dev, USBCTL0, tmp);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return 0;
+}
+
+static const struct usb_gadget_ops net2272_ops = {
+ .get_frame = net2272_get_frame,
+ .wakeup = net2272_wakeup,
+ .set_selfpowered = net2272_set_selfpowered,
+ .pullup = net2272_pullup
+};
+
+/*---------------------------------------------------------------------------*/
+
+static ssize_t
+net2272_show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
+{
+ struct net2272 *dev;
+ char *next;
+ unsigned size, t;
+ unsigned long flags;
+ u8 t1, t2;
+ int i;
+ const char *s;
+
+ dev = dev_get_drvdata(_dev);
+ next = buf;
+ size = PAGE_SIZE;
+ spin_lock_irqsave(&dev->lock, flags);
+
+ if (dev->driver)
+ s = dev->driver->driver.name;
+ else
+ s = "(none)";
+
+ /* Main Control Registers */
+ t = scnprintf(next, size, "%s version %s,"
+ "chiprev %02x, locctl %02x\n"
+ "irqenb0 %02x irqenb1 %02x "
+ "irqstat0 %02x irqstat1 %02x\n",
+ driver_name, driver_vers, dev->chiprev,
+ net2272_read(dev, LOCCTL),
+ net2272_read(dev, IRQENB0),
+ net2272_read(dev, IRQENB1),
+ net2272_read(dev, IRQSTAT0),
+ net2272_read(dev, IRQSTAT1));
+ size -= t;
+ next += t;
+
+ /* DMA */
+ t1 = net2272_read(dev, DMAREQ);
+ t = scnprintf(next, size, "\ndmareq %02x: %s %s%s%s%s\n",
+ t1, ep_name[(t1 & 0x01) + 1],
+ t1 & (1 << DMA_CONTROL_DACK) ? "dack " : "",
+ t1 & (1 << DMA_REQUEST_ENABLE) ? "reqenb " : "",
+ t1 & (1 << DMA_REQUEST) ? "req " : "",
+ t1 & (1 << DMA_BUFFER_VALID) ? "valid " : "");
+ size -= t;
+ next += t;
+
+ /* USB Control Registers */
+ t1 = net2272_read(dev, USBCTL1);
+ if (t1 & (1 << VBUS_PIN)) {
+ if (t1 & (1 << USB_HIGH_SPEED))
+ s = "high speed";
+ else if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+ s = "powered";
+ else
+ s = "full speed";
+ } else
+ s = "not attached";
+ t = scnprintf(next, size,
+ "usbctl0 %02x usbctl1 %02x addr 0x%02x (%s)\n",
+ net2272_read(dev, USBCTL0), t1,
+ net2272_read(dev, OURADDR), s);
+ size -= t;
+ next += t;
+
+ /* Endpoint Registers */
+ for (i = 0; i < 4; ++i) {
+ struct net2272_ep *ep;
+
+ ep = &dev->ep[i];
+ if (i && !ep->desc)
+ continue;
+
+ t1 = net2272_ep_read(ep, EP_CFG);
+ t2 = net2272_ep_read(ep, EP_RSPSET);
+ t = scnprintf(next, size,
+ "\n%s\tcfg %02x rsp (%02x) %s%s%s%s%s%s%s%s"
+ "irqenb %02x\n",
+ ep->ep.name, t1, t2,
+ (t2 & (1 << ALT_NAK_OUT_PACKETS)) ? "NAK " : "",
+ (t2 & (1 << HIDE_STATUS_PHASE)) ? "hide " : "",
+ (t2 & (1 << AUTOVALIDATE)) ? "auto " : "",
+ (t2 & (1 << INTERRUPT_MODE)) ? "interrupt " : "",
+ (t2 & (1 << CONTROL_STATUS_PHASE_HANDSHAKE)) ? "status " : "",
+ (t2 & (1 << NAK_OUT_PACKETS_MODE)) ? "NAKmode " : "",
+ (t2 & (1 << ENDPOINT_TOGGLE)) ? "DATA1 " : "DATA0 ",
+ (t2 & (1 << ENDPOINT_HALT)) ? "HALT " : "",
+ net2272_ep_read(ep, EP_IRQENB));
+ size -= t;
+ next += t;
+
+ t = scnprintf(next, size,
+ "\tstat0 %02x stat1 %02x avail %04x "
+ "(ep%d%s-%s)%s\n",
+ net2272_ep_read(ep, EP_STAT0),
+ net2272_ep_read(ep, EP_STAT1),
+ (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0),
+ t1 & 0x0f,
+ ep->is_in ? "in" : "out",
+ type_string(t1 >> 5),
+ ep->stopped ? "*" : "");
+ size -= t;
+ next += t;
+
+ t = scnprintf(next, size,
+ "\tep_transfer %06x\n",
+ ((net2272_ep_read(ep, EP_TRANSFER2) & 0xff) << 16) |
+ ((net2272_ep_read(ep, EP_TRANSFER1) & 0xff) << 8) |
+ ((net2272_ep_read(ep, EP_TRANSFER0) & 0xff)));
+ size -= t;
+ next += t;
+
+ t1 = net2272_ep_read(ep, EP_BUFF_STATES) & 0x03;
+ t2 = (net2272_ep_read(ep, EP_BUFF_STATES) >> 2) & 0x03;
+ t = scnprintf(next, size,
+ "\tbuf-a %s buf-b %s\n",
+ buf_state_string(t1),
+ buf_state_string(t2));
+ size -= t;
+ next += t;
+ }
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return PAGE_SIZE - size;
+}
+static DEVICE_ATTR(registers, S_IRUGO, net2272_show_registers, NULL);
+
+/*---------------------------------------------------------------------------*/
+
+static void
+net2272_set_fifo_mode(struct net2272 *dev, int mode)
+{
+ u8 tmp;
+
+ tmp = net2272_read(dev, LOCCTL) & 0x3f;
+ tmp |= (mode << 6);
+ net2272_write(dev, LOCCTL, tmp);
+
+ INIT_LIST_HEAD(&dev->gadget.ep_list);
+
+ /* always ep-a, ep-c ... maybe not ep-b */
+ list_add_tail(&dev->ep[1].ep.ep_list, &dev->gadget.ep_list);
+
+ switch (mode) {
+ case 0:
+ list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+ dev->ep[1].fifo_size = dev->ep[2].fifo_size = 512;
+ break;
+ case 1:
+ list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+ dev->ep[1].fifo_size = 1024;
+ dev->ep[2].fifo_size = 512;
+ break;
+ case 2:
+ list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+ dev->ep[1].fifo_size = dev->ep[2].fifo_size = 1024;
+ break;
+ case 3:
+ dev->ep[1].fifo_size = 1024;
+ break;
+ }
+
+ /* ep-c is always 2 512 byte buffers */
+ list_add_tail(&dev->ep[3].ep.ep_list, &dev->gadget.ep_list);
+ dev->ep[3].fifo_size = 512;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static struct net2272 *the_controller;
+
+static void
+net2272_usb_reset(struct net2272 *dev)
+{
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
+
+ net2272_cancel_dma(dev);
+
+ net2272_write(dev, IRQENB0, 0);
+ net2272_write(dev, IRQENB1, 0);
+
+ /* clear irq state */
+ net2272_write(dev, IRQSTAT0, 0xff);
+ net2272_write(dev, IRQSTAT1, ~(1 << SUSPEND_REQUEST_INTERRUPT));
+
+ net2272_write(dev, DMAREQ,
+ (0 << DMA_BUFFER_VALID) |
+ (0 << DMA_REQUEST_ENABLE) |
+ (1 << DMA_CONTROL_DACK) |
+ (dev->dma_eot_polarity << EOT_POLARITY) |
+ (dev->dma_dack_polarity << DACK_POLARITY) |
+ (dev->dma_dreq_polarity << DREQ_POLARITY) |
+ ((dma_ep >> 1) << DMA_ENDPOINT_SELECT));
+
+ net2272_cancel_dma(dev);
+ net2272_set_fifo_mode(dev, (fifo_mode <= 3) ? fifo_mode : 0);
+
+ /* Set the NET2272 ep fifo data width to 16-bit mode and for correct byte swapping
+ * note that the higher level gadget drivers are expected to convert data to little endian.
+ * Enable byte swap for your local bus/cpu if needed by setting BYTE_SWAP in LOCCTL here
+ */
+ net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) | (1 << DATA_WIDTH));
+ net2272_write(dev, LOCCTL1, (dma_mode << DMA_MODE));
+}
+
+static void
+net2272_usb_reinit(struct net2272 *dev)
+{
+ int i;
+
+ /* basic endpoint init */
+ for (i = 0; i < 4; ++i) {
+ struct net2272_ep *ep = &dev->ep[i];
+
+ ep->ep.name = ep_name[i];
+ ep->dev = dev;
+ ep->num = i;
+ ep->not_empty = 0;
+
+ if (use_dma && ep->num == dma_ep)
+ ep->dma = 1;
+
+ if (i > 0 && i <= 3)
+ ep->fifo_size = 512;
+ else
+ ep->fifo_size = 64;
+ net2272_ep_reset(ep);
+ }
+ dev->ep[0].ep.maxpacket = 64;
+
+ dev->gadget.ep0 = &dev->ep[0].ep;
+ dev->ep[0].stopped = 0;
+ INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
+}
+
+static void
+net2272_ep0_start(struct net2272 *dev)
+{
+ struct net2272_ep *ep0 = &dev->ep[0];
+
+ net2272_ep_write(ep0, EP_RSPSET,
+ (1 << NAK_OUT_PACKETS_MODE) |
+ (1 << ALT_NAK_OUT_PACKETS));
+ net2272_ep_write(ep0, EP_RSPCLR,
+ (1 << HIDE_STATUS_PHASE) |
+ (1 << CONTROL_STATUS_PHASE_HANDSHAKE));
+ net2272_write(dev, USBCTL0,
+ (dev->softconnect << USB_DETECT_ENABLE) |
+ (1 << USB_ROOT_PORT_WAKEUP_ENABLE) |
+ (1 << IO_WAKEUP_ENABLE));
+ net2272_write(dev, IRQENB0,
+ (1 << SETUP_PACKET_INTERRUPT_ENABLE) |
+ (1 << ENDPOINT_0_INTERRUPT_ENABLE) |
+ (1 << DMA_DONE_INTERRUPT_ENABLE));
+ net2272_write(dev, IRQENB1,
+ (1 << VBUS_INTERRUPT_ENABLE) |
+ (1 << ROOT_PORT_RESET_INTERRUPT_ENABLE) |
+ (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE));
+}
+
+/* when a driver is successfully registered, it will receive
+ * control requests including set_configuration(), which enables
+ * non-control requests. then usb traffic follows until a
+ * disconnect is reported. then a host may connect again, or
+ * the driver might get unbound.
+ */
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+ int (*bind)(struct usb_gadget *))
+{
+ struct net2272 *dev = the_controller;
+ int ret;
+ unsigned i;
+
+ if (!driver || !bind || !driver->unbind || !driver->setup ||
+ driver->speed != USB_SPEED_HIGH)
+ return -EINVAL;
+ if (!dev)
+ return -ENODEV;
+ if (dev->driver)
+ return -EBUSY;
+
+ for (i = 0; i < 4; ++i)
+ dev->ep[i].irqs = 0;
+ /* hook up the driver ... */
+ dev->softconnect = 1;
+ driver->driver.bus = NULL;
+ dev->driver = driver;
+ dev->gadget.dev.driver = &driver->driver;
+ ret = bind(&dev->gadget);
+ if (ret) {
+ dev_dbg(dev->dev, "bind to driver %s --> %d\n",
+ driver->driver.name, ret);
+ dev->driver = NULL;
+ dev->gadget.dev.driver = NULL;
+ return ret;
+ }
+
+ /* ... then enable host detection and ep0; and we're ready
+ * for set_configuration as well as eventual disconnect.
+ */
+ net2272_ep0_start(dev);
+
+ dev_dbg(dev->dev, "%s ready\n", driver->driver.name);
+
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_probe_driver);
+
+static void
+stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
+{
+ int i;
+
+ /* don't disconnect if it's not connected */
+ if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+ driver = NULL;
+
+ /* stop hardware; prevent new request submissions;
+ * and kill any outstanding requests.
+ */
+ net2272_usb_reset(dev);
+ for (i = 0; i < 4; ++i)
+ net2272_dequeue_all(&dev->ep[i]);
+
+ /* report disconnect; the driver is already quiesced */
+ if (driver) {
+ spin_unlock(&dev->lock);
+ driver->disconnect(&dev->gadget);
+ spin_lock(&dev->lock);
+
+ }
+ net2272_usb_reinit(dev);
+}
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct net2272 *dev = the_controller;
+ unsigned long flags;
+
+ if (!dev)
+ return -ENODEV;
+ if (!driver || driver != dev->driver)
+ return -EINVAL;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ stop_activity(dev, driver);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ net2272_pullup(&dev->gadget, 0);
+
+ driver->unbind(&dev->gadget);
+ dev->gadget.dev.driver = NULL;
+ dev->driver = NULL;
+
+ dev_dbg(dev->dev, "unregistered driver '%s'\n", driver->driver.name);
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*---------------------------------------------------------------------------*/
+/* handle ep-a/ep-b dma completions */
+static void
+net2272_handle_dma(struct net2272_ep *ep)
+{
+ struct net2272_request *req;
+ unsigned len;
+ int status;
+
+ if (!list_empty(&ep->queue))
+ req = list_entry(ep->queue.next,
+ struct net2272_request, queue);
+ else
+ req = NULL;
+
+ dev_vdbg(ep->dev->dev, "handle_dma %s req %p\n", ep->ep.name, req);
+
+ /* Ensure DREQ is de-asserted */
+ net2272_write(ep->dev, DMAREQ,
+ (0 << DMA_BUFFER_VALID)
+ | (0 << DMA_REQUEST_ENABLE)
+ | (1 << DMA_CONTROL_DACK)
+ | (ep->dev->dma_eot_polarity << EOT_POLARITY)
+ | (ep->dev->dma_dack_polarity << DACK_POLARITY)
+ | (ep->dev->dma_dreq_polarity << DREQ_POLARITY)
+ | ((ep->dma >> 1) << DMA_ENDPOINT_SELECT));
+
+ ep->dev->dma_busy = 0;
+
+ net2272_ep_write(ep, EP_IRQENB,
+ (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+ | net2272_ep_read(ep, EP_IRQENB));
+
+ /* device-to-host transfer completed */
+ if (ep->is_in) {
+ /* validate a short packet or zlp if necessary */
+ if ((req->req.length % ep->ep.maxpacket != 0) ||
+ req->req.zero)
+ set_fifo_bytecount(ep, 0);
+
+ net2272_done(ep, req, 0);
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct net2272_request, queue);
+ status = net2272_kick_dma(ep, req);
+ if (status < 0)
+ net2272_pio_advance(ep);
+ }
+
+ /* host-to-device transfer completed */
+ } else {
+ /* terminated with a short packet? */
+ if (net2272_read(ep->dev, IRQSTAT0) &
+ (1 << DMA_DONE_INTERRUPT)) {
+ /* abort system dma */
+ net2272_cancel_dma(ep->dev);
+ }
+
+ /* EP_TRANSFER will contain the number of bytes
+ * actually received.
+ * NOTE: There is no overflow detection on EP_TRANSFER:
+ * We can't deal with transfers larger than 2^24 bytes!
+ */
+ len = (net2272_ep_read(ep, EP_TRANSFER2) << 16)
+ | (net2272_ep_read(ep, EP_TRANSFER1) << 8)
+ | (net2272_ep_read(ep, EP_TRANSFER0));
+
+ if (ep->not_empty)
+ len += 4;
+
+ req->req.actual += len;
+
+ /* get any remaining data */
+ net2272_pio_advance(ep);
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void
+net2272_handle_ep(struct net2272_ep *ep)
+{
+ struct net2272_request *req;
+ u8 stat0, stat1;
+
+ if (!list_empty(&ep->queue))
+ req = list_entry(ep->queue.next,
+ struct net2272_request, queue);
+ else
+ req = NULL;
+
+ /* ack all, and handle what we care about */
+ stat0 = net2272_ep_read(ep, EP_STAT0);
+ stat1 = net2272_ep_read(ep, EP_STAT1);
+ ep->irqs++;
+
+ dev_vdbg(ep->dev->dev, "%s ack ep_stat0 %02x, ep_stat1 %02x, req %p\n",
+ ep->ep.name, stat0, stat1, req ? &req->req : 0);
+
+ net2272_ep_write(ep, EP_STAT0, stat0 &
+ ~((1 << NAK_OUT_PACKETS)
+ | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)));
+ net2272_ep_write(ep, EP_STAT1, stat1);
+
+ /* data packet(s) received (in the fifo, OUT)
+ * direction must be validated, otherwise control read status phase
+ * could be interpreted as a valid packet
+ */
+ if (!ep->is_in && (stat0 & (1 << DATA_PACKET_RECEIVED_INTERRUPT)))
+ net2272_pio_advance(ep);
+ /* data packet(s) transmitted (IN) */
+ else if (stat0 & (1 << DATA_PACKET_TRANSMITTED_INTERRUPT))
+ net2272_pio_advance(ep);
+}
+
+static struct net2272_ep *
+net2272_get_ep_by_addr(struct net2272 *dev, u16 wIndex)
+{
+ struct net2272_ep *ep;
+
+ if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0)
+ return &dev->ep[0];
+
+ list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) {
+ u8 bEndpointAddress;
+
+ if (!ep->desc)
+ continue;
+ bEndpointAddress = ep->desc->bEndpointAddress;
+ if ((wIndex ^ bEndpointAddress) & USB_DIR_IN)
+ continue;
+ if ((wIndex & 0x0f) == (bEndpointAddress & 0x0f))
+ return ep;
+ }
+ return NULL;
+}
+
+/*
+ * USB Test Packet:
+ * JKJKJKJK * 9
+ * JJKKJJKK * 8
+ * JJJJKKKK * 8
+ * JJJJJJJKKKKKKK * 8
+ * JJJJJJJK * 8
+ * {JKKKKKKK * 10}, JK
+ */
+static const u8 net2272_test_packet[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
+ 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE,
+ 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD,
+ 0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFD, 0x7E
+};
+
+static void
+net2272_set_test_mode(struct net2272 *dev, int mode)
+{
+ int i;
+
+ /* Disable all net2272 interrupts:
+ * Nothing but a power cycle should stop the test.
+ */
+ net2272_write(dev, IRQENB0, 0x00);
+ net2272_write(dev, IRQENB1, 0x00);
+
+ /* Force tranceiver to high-speed */
+ net2272_write(dev, XCVRDIAG, 1 << FORCE_HIGH_SPEED);
+
+ net2272_write(dev, PAGESEL, 0);
+ net2272_write(dev, EP_STAT0, 1 << DATA_PACKET_TRANSMITTED_INTERRUPT);
+ net2272_write(dev, EP_RSPCLR,
+ (1 << CONTROL_STATUS_PHASE_HANDSHAKE)
+ | (1 << HIDE_STATUS_PHASE));
+ net2272_write(dev, EP_CFG, 1 << ENDPOINT_DIRECTION);
+ net2272_write(dev, EP_STAT1, 1 << BUFFER_FLUSH);
+
+ /* wait for status phase to complete */
+ while (!(net2272_read(dev, EP_STAT0) &
+ (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)))
+ ;
+
+ /* Enable test mode */
+ net2272_write(dev, USBTEST, mode);
+
+ /* load test packet */
+ if (mode == TEST_PACKET) {
+ /* switch to 8 bit mode */
+ net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) &
+ ~(1 << DATA_WIDTH));
+
+ for (i = 0; i < sizeof(net2272_test_packet); ++i)
+ net2272_write(dev, EP_DATA, net2272_test_packet[i]);
+
+ /* Validate test packet */
+ net2272_write(dev, EP_TRANSFER0, 0);
+ }
+}
+
+static void
+net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat)
+{
+ struct net2272_ep *ep;
+ u8 num, scratch;
+
+ /* starting a control request? */
+ if (unlikely(stat & (1 << SETUP_PACKET_INTERRUPT))) {
+ union {
+ u8 raw[8];
+ struct usb_ctrlrequest r;
+ } u;
+ int tmp = 0;
+ struct net2272_request *req;
+
+ if (dev->gadget.speed == USB_SPEED_UNKNOWN) {
+ if (net2272_read(dev, USBCTL1) & (1 << USB_HIGH_SPEED))
+ dev->gadget.speed = USB_SPEED_HIGH;
+ else
+ dev->gadget.speed = USB_SPEED_FULL;
+ dev_dbg(dev->dev, "%s speed\n",
+ (dev->gadget.speed == USB_SPEED_HIGH) ? "high" : "full");
+ }
+
+ ep = &dev->ep[0];
+ ep->irqs++;
+
+ /* make sure any leftover interrupt state is cleared */
+ stat &= ~(1 << ENDPOINT_0_INTERRUPT);
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct net2272_request, queue);
+ net2272_done(ep, req,
+ (req->req.actual == req->req.length) ? 0 : -EPROTO);
+ }
+ ep->stopped = 0;
+ dev->protocol_stall = 0;
+ net2272_ep_write(ep, EP_STAT0,
+ (1 << DATA_IN_TOKEN_INTERRUPT)
+ | (1 << DATA_OUT_TOKEN_INTERRUPT)
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)
+ | (1 << DATA_PACKET_RECEIVED_INTERRUPT)
+ | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT));
+ net2272_ep_write(ep, EP_STAT1,
+ (1 << TIMEOUT)
+ | (1 << USB_OUT_ACK_SENT)
+ | (1 << USB_OUT_NAK_SENT)
+ | (1 << USB_IN_ACK_RCVD)
+ | (1 << USB_IN_NAK_SENT)
+ | (1 << USB_STALL_SENT)
+ | (1 << LOCAL_OUT_ZLP));
+
+ /*
+ * Ensure Control Read pre-validation setting is beyond maximum size
+ * - Control Writes can leave non-zero values in EP_TRANSFER. If
+ * an EP0 transfer following the Control Write is a Control Read,
+ * the NET2272 sees the non-zero EP_TRANSFER as an unexpected
+ * pre-validation count.
+ * - Setting EP_TRANSFER beyond the maximum EP0 transfer size ensures
+ * the pre-validation count cannot cause an unexpected validatation
+ */
+ net2272_write(dev, PAGESEL, 0);
+ net2272_write(dev, EP_TRANSFER2, 0xff);
+ net2272_write(dev, EP_TRANSFER1, 0xff);
+ net2272_write(dev, EP_TRANSFER0, 0xff);
+
+ u.raw[0] = net2272_read(dev, SETUP0);
+ u.raw[1] = net2272_read(dev, SETUP1);
+ u.raw[2] = net2272_read(dev, SETUP2);
+ u.raw[3] = net2272_read(dev, SETUP3);
+ u.raw[4] = net2272_read(dev, SETUP4);
+ u.raw[5] = net2272_read(dev, SETUP5);
+ u.raw[6] = net2272_read(dev, SETUP6);
+ u.raw[7] = net2272_read(dev, SETUP7);
+ /*
+ * If you have a big endian cpu make sure le16_to_cpus
+ * performs the proper byte swapping here...
+ */
+ le16_to_cpus(&u.r.wValue);
+ le16_to_cpus(&u.r.wIndex);
+ le16_to_cpus(&u.r.wLength);
+
+ /* ack the irq */
+ net2272_write(dev, IRQSTAT0, 1 << SETUP_PACKET_INTERRUPT);
+ stat ^= (1 << SETUP_PACKET_INTERRUPT);
+
+ /* watch control traffic at the token level, and force
+ * synchronization before letting the status phase happen.
+ */
+ ep->is_in = (u.r.bRequestType & USB_DIR_IN) != 0;
+ if (ep->is_in) {
+ scratch = (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+ | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE)
+ | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE);
+ stop_out_naking(ep);
+ } else
+ scratch = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+ | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE)
+ | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE);
+ net2272_ep_write(ep, EP_IRQENB, scratch);
+
+ if ((u.r.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD)
+ goto delegate;
+ switch (u.r.bRequest) {
+ case USB_REQ_GET_STATUS: {
+ struct net2272_ep *e;
+ u16 status = 0;
+
+ switch (u.r.bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_ENDPOINT:
+ e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+ if (!e || u.r.wLength > 2)
+ goto do_stall;
+ if (net2272_ep_read(e, EP_RSPSET) & (1 << ENDPOINT_HALT))
+ status = __constant_cpu_to_le16(1);
+ else
+ status = __constant_cpu_to_le16(0);
+
+ /* don't bother with a request object! */
+ net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+ writew(status, net2272_reg_addr(dev, EP_DATA));
+ set_fifo_bytecount(&dev->ep[0], 0);
+ allow_status(ep);
+ dev_vdbg(dev->dev, "%s stat %02x\n",
+ ep->ep.name, status);
+ goto next_endpoints;
+ case USB_RECIP_DEVICE:
+ if (u.r.wLength > 2)
+ goto do_stall;
+ if (dev->is_selfpowered)
+ status = (1 << USB_DEVICE_SELF_POWERED);
+
+ /* don't bother with a request object! */
+ net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+ writew(status, net2272_reg_addr(dev, EP_DATA));
+ set_fifo_bytecount(&dev->ep[0], 0);
+ allow_status(ep);
+ dev_vdbg(dev->dev, "device stat %02x\n", status);
+ goto next_endpoints;
+ case USB_RECIP_INTERFACE:
+ if (u.r.wLength > 2)
+ goto do_stall;
+
+ /* don't bother with a request object! */
+ net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+ writew(status, net2272_reg_addr(dev, EP_DATA));
+ set_fifo_bytecount(&dev->ep[0], 0);
+ allow_status(ep);
+ dev_vdbg(dev->dev, "interface status %02x\n", status);
+ goto next_endpoints;
+ }
+
+ break;
+ }
+ case USB_REQ_CLEAR_FEATURE: {
+ struct net2272_ep *e;
+
+ if (u.r.bRequestType != USB_RECIP_ENDPOINT)
+ goto delegate;
+ if (u.r.wValue != USB_ENDPOINT_HALT ||
+ u.r.wLength != 0)
+ goto do_stall;
+ e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+ if (!e)
+ goto do_stall;
+ if (e->wedged) {
+ dev_vdbg(dev->dev, "%s wedged, halt not cleared\n",
+ ep->ep.name);
+ } else {
+ dev_vdbg(dev->dev, "%s clear halt\n", ep->ep.name);
+ clear_halt(e);
+ }
+ allow_status(ep);
+ goto next_endpoints;
+ }
+ case USB_REQ_SET_FEATURE: {
+ struct net2272_ep *e;
+
+ if (u.r.bRequestType == USB_RECIP_DEVICE) {
+ if (u.r.wIndex != NORMAL_OPERATION)
+ net2272_set_test_mode(dev, (u.r.wIndex >> 8));
+ allow_status(ep);
+ dev_vdbg(dev->dev, "test mode: %d\n", u.r.wIndex);
+ goto next_endpoints;
+ } else if (u.r.bRequestType != USB_RECIP_ENDPOINT)
+ goto delegate;
+ if (u.r.wValue != USB_ENDPOINT_HALT ||
+ u.r.wLength != 0)
+ goto do_stall;
+ e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+ if (!e)
+ goto do_stall;
+ set_halt(e);
+ allow_status(ep);
+ dev_vdbg(dev->dev, "%s set halt\n", ep->ep.name);
+ goto next_endpoints;
+ }
+ case USB_REQ_SET_ADDRESS: {
+ net2272_write(dev, OURADDR, u.r.wValue & 0xff);
+ allow_status(ep);
+ break;
+ }
+ default:
+ delegate:
+ dev_vdbg(dev->dev, "setup %02x.%02x v%04x i%04x "
+ "ep_cfg %08x\n",
+ u.r.bRequestType, u.r.bRequest,
+ u.r.wValue, u.r.wIndex,
+ net2272_ep_read(ep, EP_CFG));
+ spin_unlock(&dev->lock);
+ tmp = dev->driver->setup(&dev->gadget, &u.r);
+ spin_lock(&dev->lock);
+ }
+
+ /* stall ep0 on error */
+ if (tmp < 0) {
+ do_stall:
+ dev_vdbg(dev->dev, "req %02x.%02x protocol STALL; stat %d\n",
+ u.r.bRequestType, u.r.bRequest, tmp);
+ dev->protocol_stall = 1;
+ }
+ /* endpoint dma irq? */
+ } else if (stat & (1 << DMA_DONE_INTERRUPT)) {
+ net2272_cancel_dma(dev);
+ net2272_write(dev, IRQSTAT0, 1 << DMA_DONE_INTERRUPT);
+ stat &= ~(1 << DMA_DONE_INTERRUPT);
+ num = (net2272_read(dev, DMAREQ) & (1 << DMA_ENDPOINT_SELECT))
+ ? 2 : 1;
+
+ ep = &dev->ep[num];
+ net2272_handle_dma(ep);
+ }
+
+ next_endpoints:
+ /* endpoint data irq? */
+ scratch = stat & 0x0f;
+ stat &= ~0x0f;
+ for (num = 0; scratch; num++) {
+ u8 t;
+
+ /* does this endpoint's FIFO and queue need tending? */
+ t = 1 << num;
+ if ((scratch & t) == 0)
+ continue;
+ scratch ^= t;
+
+ ep = &dev->ep[num];
+ net2272_handle_ep(ep);
+ }
+
+ /* some interrupts we can just ignore */
+ stat &= ~(1 << SOF_INTERRUPT);
+
+ if (stat)
+ dev_dbg(dev->dev, "unhandled irqstat0 %02x\n", stat);
+}
+
+static void
+net2272_handle_stat1_irqs(struct net2272 *dev, u8 stat)
+{
+ u8 tmp, mask;
+
+ /* after disconnect there's nothing else to do! */
+ tmp = (1 << VBUS_INTERRUPT) | (1 << ROOT_PORT_RESET_INTERRUPT);
+ mask = (1 << USB_HIGH_SPEED) | (1 << USB_FULL_SPEED);
+
+ if (stat & tmp) {
+ net2272_write(dev, IRQSTAT1, tmp);
+ if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) &&
+ ((net2272_read(dev, USBCTL1) & mask) == 0))
+ || ((net2272_read(dev, USBCTL1) & (1 << VBUS_PIN))
+ == 0))
+ && (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
+ dev_dbg(dev->dev, "disconnect %s\n",
+ dev->driver->driver.name);
+ stop_activity(dev, dev->driver);
+ net2272_ep0_start(dev);
+ return;
+ }
+ stat &= ~tmp;
+
+ if (!stat)
+ return;
+ }
+
+ tmp = (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT);
+ if (stat & tmp) {
+ net2272_write(dev, IRQSTAT1, tmp);
+ if (stat & (1 << SUSPEND_REQUEST_INTERRUPT)) {
+ if (dev->driver->suspend)
+ dev->driver->suspend(&dev->gadget);
+ if (!enable_suspend) {
+ stat &= ~(1 << SUSPEND_REQUEST_INTERRUPT);
+ dev_dbg(dev->dev, "Suspend disabled, ignoring\n");
+ }
+ } else {
+ if (dev->driver->resume)
+ dev->driver->resume(&dev->gadget);
+ }
+ stat &= ~tmp;
+ }
+
+ /* clear any other status/irqs */
+ if (stat)
+ net2272_write(dev, IRQSTAT1, stat);
+
+ /* some status we can just ignore */
+ stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+ | (1 << SUSPEND_REQUEST_INTERRUPT)
+ | (1 << RESUME_INTERRUPT));
+ if (!stat)
+ return;
+ else
+ dev_dbg(dev->dev, "unhandled irqstat1 %02x\n", stat);
+}
+
+static irqreturn_t net2272_irq(int irq, void *_dev)
+{
+ struct net2272 *dev = _dev;
+#if defined(PLX_PCI_RDK) || defined(PLX_PCI_RDK2)
+ u32 intcsr;
+#endif
+#if defined(PLX_PCI_RDK)
+ u8 dmareq;
+#endif
+ spin_lock(&dev->lock);
+#if defined(PLX_PCI_RDK)
+ intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR);
+
+ if ((intcsr & LOCAL_INTERRUPT_TEST) == LOCAL_INTERRUPT_TEST) {
+ writel(intcsr & ~(1 << PCI_INTERRUPT_ENABLE),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+ net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1));
+ net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0));
+ intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR);
+ writel(intcsr | (1 << PCI_INTERRUPT_ENABLE),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+ }
+ if ((intcsr & DMA_CHANNEL_0_TEST) == DMA_CHANNEL_0_TEST) {
+ writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)),
+ dev->rdk1.plx9054_base_addr + DMACSR0);
+
+ dmareq = net2272_read(dev, DMAREQ);
+ if (dmareq & 0x01)
+ net2272_handle_dma(&dev->ep[2]);
+ else
+ net2272_handle_dma(&dev->ep[1]);
+ }
+#endif
+#if defined(PLX_PCI_RDK2)
+ /* see if PCI int for us by checking irqstat */
+ intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT);
+ if (!intcsr & (1 << NET2272_PCI_IRQ))
+ return IRQ_NONE;
+ /* check dma interrupts */
+#endif
+ /* Platform/devcice interrupt handler */
+#if !defined(PLX_PCI_RDK)
+ net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1));
+ net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0));
+#endif
+ spin_unlock(&dev->lock);
+
+ return IRQ_HANDLED;
+}
+
+static int net2272_present(struct net2272 *dev)
+{
+ /*
+ * Quick test to see if CPU can communicate properly with the NET2272.
+ * Verifies connection using writes and reads to write/read and
+ * read-only registers.
+ *
+ * This routine is strongly recommended especially during early bring-up
+ * of new hardware, however for designs that do not apply Power On System
+ * Tests (POST) it may discarded (or perhaps minimized).
+ */
+ unsigned int ii;
+ u8 val, refval;
+
+ /* Verify NET2272 write/read SCRATCH register can write and read */
+ refval = net2272_read(dev, SCRATCH);
+ for (ii = 0; ii < 0x100; ii += 7) {
+ net2272_write(dev, SCRATCH, ii);
+ val = net2272_read(dev, SCRATCH);
+ if (val != ii) {
+ dev_dbg(dev->dev,
+ "%s: write/read SCRATCH register test failed: "
+ "wrote:0x%2.2x, read:0x%2.2x\n",
+ __func__, ii, val);
+ return -EINVAL;
+ }
+ }
+ /* To be nice, we write the original SCRATCH value back: */
+ net2272_write(dev, SCRATCH, refval);
+
+ /* Verify NET2272 CHIPREV register is read-only: */
+ refval = net2272_read(dev, CHIPREV_2272);
+ for (ii = 0; ii < 0x100; ii += 7) {
+ net2272_write(dev, CHIPREV_2272, ii);
+ val = net2272_read(dev, CHIPREV_2272);
+ if (val != refval) {
+ dev_dbg(dev->dev,
+ "%s: write/read CHIPREV register test failed: "
+ "wrote 0x%2.2x, read:0x%2.2x expected:0x%2.2x\n",
+ __func__, ii, val, refval);
+ return -EINVAL;
+ }
+ }
+
+ /*
+ * Verify NET2272's "NET2270 legacy revision" register
+ * - NET2272 has two revision registers. The NET2270 legacy revision
+ * register should read the same value, regardless of the NET2272
+ * silicon revision. The legacy register applies to NET2270
+ * firmware being applied to the NET2272.
+ */
+ val = net2272_read(dev, CHIPREV_LEGACY);
+ if (val != NET2270_LEGACY_REV) {
+ /*
+ * Unexpected legacy revision value
+ * - Perhaps the chip is a NET2270?
+ */
+ dev_dbg(dev->dev,
+ "%s: WARNING: UNEXPECTED NET2272 LEGACY REGISTER VALUE:\n"
+ " - CHIPREV_LEGACY: expected 0x%2.2x, got:0x%2.2x. (Not NET2272?)\n",
+ __func__, NET2270_LEGACY_REV, val);
+ return -EINVAL;
+ }
+
+ /*
+ * Verify NET2272 silicon revision
+ * - This revision register is appropriate for the silicon version
+ * of the NET2272
+ */
+ val = net2272_read(dev, CHIPREV_2272);
+ switch (val) {
+ case CHIPREV_NET2272_R1:
+ /*
+ * NET2272 Rev 1 has DMA related errata:
+ * - Newer silicon (Rev 1A or better) required
+ */
+ dev_dbg(dev->dev,
+ "%s: Rev 1 detected: newer silicon recommended for DMA support\n",
+ __func__);
+ break;
+ case CHIPREV_NET2272_R1A:
+ break;
+ default:
+ /* NET2272 silicon version *may* not work with this firmware */
+ dev_dbg(dev->dev,
+ "%s: unexpected silicon revision register value: "
+ " CHIPREV_2272: 0x%2.2x\n",
+ __func__, val);
+ /*
+ * Return Success, even though the chip rev is not an expected value
+ * - Older, pre-built firmware can attempt to operate on newer silicon
+ * - Often, new silicon is perfectly compatible
+ */
+ }
+
+ /* Success: NET2272 checks out OK */
+ return 0;
+}
+
+static void
+net2272_gadget_release(struct device *_dev)
+{
+ struct net2272 *dev = dev_get_drvdata(_dev);
+ kfree(dev);
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void __devexit
+net2272_remove(struct net2272 *dev)
+{
+ /* start with the driver above us */
+ if (dev->driver) {
+ /* should have been done already by driver model core */
+ dev_warn(dev->dev, "pci remove, driver '%s' is still registered\n",
+ dev->driver->driver.name);
+ usb_gadget_unregister_driver(dev->driver);
+ }
+
+ free_irq(dev->irq, dev);
+ iounmap(dev->base_addr);
+
+ device_unregister(&dev->gadget.dev);
+ device_remove_file(dev->dev, &dev_attr_registers);
+
+ dev_info(dev->dev, "unbind\n");
+ the_controller = NULL;
+}
+
+static struct net2272 * __devinit
+net2272_probe_init(struct device *dev, unsigned int irq)
+{
+ struct net2272 *ret;
+
+ if (the_controller) {
+ dev_warn(dev, "ignoring\n");
+ return ERR_PTR(-EBUSY);
+ }
+
+ if (!irq) {
+ dev_dbg(dev, "No IRQ!\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ /* alloc, and start init */
+ ret = kzalloc(sizeof(*ret), GFP_KERNEL);
+ if (!ret)
+ return ERR_PTR(-ENOMEM);
+
+ spin_lock_init(&ret->lock);
+ ret->irq = irq;
+ ret->dev = dev;
+ ret->gadget.ops = &net2272_ops;
+ ret->gadget.is_dualspeed = 1;
+
+ /* the "gadget" abstracts/virtualizes the controller */
+ dev_set_name(&ret->gadget.dev, "gadget");
+ ret->gadget.dev.parent = dev;
+ ret->gadget.dev.dma_mask = dev->dma_mask;
+ ret->gadget.dev.release = net2272_gadget_release;
+ ret->gadget.name = driver_name;
+
+ return ret;
+}
+
+static int __devinit
+net2272_probe_fin(struct net2272 *dev, unsigned int irqflags)
+{
+ int ret;
+
+ /* See if there... */
+ if (net2272_present(dev)) {
+ dev_warn(dev->dev, "2272 not found!\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ net2272_usb_reset(dev);
+ net2272_usb_reinit(dev);
+
+ ret = request_irq(dev->irq, net2272_irq, irqflags, driver_name, dev);
+ if (ret) {
+ dev_err(dev->dev, "request interrupt %i failed\n", dev->irq);
+ goto err;
+ }
+
+ dev->chiprev = net2272_read(dev, CHIPREV_2272);
+
+ /* done */
+ dev_info(dev->dev, "%s\n", driver_desc);
+ dev_info(dev->dev, "irq %i, mem %p, chip rev %04x, dma %s\n",
+ dev->irq, dev->base_addr, dev->chiprev,
+ dma_mode_string());
+ dev_info(dev->dev, "version: %s\n", driver_vers);
+
+ the_controller = dev;
+
+ ret = device_register(&dev->gadget.dev);
+ if (ret)
+ goto err_irq;
+ ret = device_create_file(dev->dev, &dev_attr_registers);
+ if (ret)
+ goto err_dev_reg;
+
+ return 0;
+
+ err_dev_reg:
+ device_unregister(&dev->gadget.dev);
+ err_irq:
+ free_irq(dev->irq, dev);
+ err:
+ return ret;
+}
+
+#ifdef CONFIG_PCI
+
+/*
+ * wrap this driver around the specified device, but
+ * don't respond over USB until a gadget driver binds to us
+ */
+
+static int __devinit
+net2272_rdk1_probe(struct pci_dev *pdev, struct net2272 *dev)
+{
+ unsigned long resource, len, tmp;
+ void __iomem *mem_mapped_addr[4];
+ int ret, i;
+
+ /*
+ * BAR 0 holds PLX 9054 config registers
+ * BAR 1 is i/o memory; unused here
+ * BAR 2 holds EPLD config registers
+ * BAR 3 holds NET2272 registers
+ */
+
+ /* Find and map all address spaces */
+ for (i = 0; i < 4; ++i) {
+ if (i == 1)
+ continue; /* BAR1 unused */
+
+ resource = pci_resource_start(pdev, i);
+ len = pci_resource_len(pdev, i);
+
+ if (!request_mem_region(resource, len, driver_name)) {
+ dev_dbg(dev->dev, "controller already in use\n");
+ ret = -EBUSY;
+ goto err;
+ }
+
+ mem_mapped_addr[i] = ioremap_nocache(resource, len);
+ if (mem_mapped_addr[i] == NULL) {
+ release_mem_region(resource, len);
+ dev_dbg(dev->dev, "can't map memory\n");
+ ret = -EFAULT;
+ goto err;
+ }
+ }
+
+ dev->rdk1.plx9054_base_addr = mem_mapped_addr[0];
+ dev->rdk1.epld_base_addr = mem_mapped_addr[2];
+ dev->base_addr = mem_mapped_addr[3];
+
+ /* Set PLX 9054 bus width (16 bits) */
+ tmp = readl(dev->rdk1.plx9054_base_addr + LBRD1);
+ writel((tmp & ~(3 << MEMORY_SPACE_LOCAL_BUS_WIDTH)) | W16_BIT,
+ dev->rdk1.plx9054_base_addr + LBRD1);
+
+ /* Enable PLX 9054 Interrupts */
+ writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) |
+ (1 << PCI_INTERRUPT_ENABLE) |
+ (1 << LOCAL_INTERRUPT_INPUT_ENABLE),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+
+ writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)),
+ dev->rdk1.plx9054_base_addr + DMACSR0);
+
+ /* reset */
+ writeb((1 << EPLD_DMA_ENABLE) |
+ (1 << DMA_CTL_DACK) |
+ (1 << DMA_TIMEOUT_ENABLE) |
+ (1 << USER) |
+ (0 << MPX_MODE) |
+ (1 << BUSWIDTH) |
+ (1 << NET2272_RESET),
+ dev->base_addr + EPLD_IO_CONTROL_REGISTER);
+
+ mb();
+ writeb(readb(dev->base_addr + EPLD_IO_CONTROL_REGISTER) &
+ ~(1 << NET2272_RESET),
+ dev->base_addr + EPLD_IO_CONTROL_REGISTER);
+ udelay(200);
+
+ return 0;
+
+ err:
+ while (--i >= 0) {
+ iounmap(mem_mapped_addr[i]);
+ release_mem_region(pci_resource_start(pdev, i),
+ pci_resource_len(pdev, i));
+ }
+
+ return ret;
+}
+
+static int __devinit
+net2272_rdk2_probe(struct pci_dev *pdev, struct net2272 *dev)
+{
+ unsigned long resource, len;
+ void __iomem *mem_mapped_addr[2];
+ int ret, i;
+
+ /*
+ * BAR 0 holds FGPA config registers
+ * BAR 1 holds NET2272 registers
+ */
+
+ /* Find and map all address spaces, bar2-3 unused in rdk 2 */
+ for (i = 0; i < 2; ++i) {
+ resource = pci_resource_start(pdev, i);
+ len = pci_resource_len(pdev, i);
+
+ if (!request_mem_region(resource, len, driver_name)) {
+ dev_dbg(dev->dev, "controller already in use\n");
+ ret = -EBUSY;
+ goto err;
+ }
+
+ mem_mapped_addr[i] = ioremap_nocache(resource, len);
+ if (mem_mapped_addr[i] == NULL) {
+ release_mem_region(resource, len);
+ dev_dbg(dev->dev, "can't map memory\n");
+ ret = -EFAULT;
+ goto err;
+ }
+ }
+
+ dev->rdk2.fpga_base_addr = mem_mapped_addr[0];
+ dev->base_addr = mem_mapped_addr[1];
+
+ mb();
+ /* Set 2272 bus width (16 bits) and reset */
+ writel((1 << CHIP_RESET), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK);
+ udelay(200);
+ writel((1 << BUS_WIDTH), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK);
+ /* Print fpga version number */
+ dev_info(dev->dev, "RDK2 FPGA version %08x\n",
+ readl(dev->rdk2.fpga_base_addr + RDK2_FPGAREV));
+ /* Enable FPGA Interrupts */
+ writel((1 << NET2272_PCI_IRQ), dev->rdk2.fpga_base_addr + RDK2_IRQENB);
+
+ return 0;
+
+ err:
+ while (--i >= 0) {
+ iounmap(mem_mapped_addr[i]);
+ release_mem_region(pci_resource_start(pdev, i),
+ pci_resource_len(pdev, i));
+ }
+
+ return ret;
+}
+
+static int __devinit
+net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct net2272 *dev;
+ int ret;
+
+ dev = net2272_probe_init(&pdev->dev, pdev->irq);
+ if (IS_ERR(dev))
+ return PTR_ERR(dev);
+ dev->dev_id = pdev->device;
+
+ if (pci_enable_device(pdev) < 0) {
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ pci_set_master(pdev);
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_RDK1: ret = net2272_rdk1_probe(pdev, dev); break;
+ case PCI_DEVICE_ID_RDK2: ret = net2272_rdk2_probe(pdev, dev); break;
+ default: BUG();
+ }
+ if (ret)
+ goto err_pci;
+
+ ret = net2272_probe_fin(dev, 0);
+ if (ret)
+ goto err_pci;
+
+ pci_set_drvdata(pdev, dev);
+
+ return 0;
+
+ err_pci:
+ pci_disable_device(pdev);
+ err_free:
+ kfree(dev);
+
+ return ret;
+}
+
+static void __devexit
+net2272_rdk1_remove(struct pci_dev *pdev, struct net2272 *dev)
+{
+ int i;
+
+ /* disable PLX 9054 interrupts */
+ writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) &
+ ~(1 << PCI_INTERRUPT_ENABLE),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+
+ /* clean up resources allocated during probe() */
+ iounmap(dev->rdk1.plx9054_base_addr);
+ iounmap(dev->rdk1.epld_base_addr);
+
+ for (i = 0; i < 4; ++i) {
+ if (i == 1)
+ continue; /* BAR1 unused */
+ release_mem_region(pci_resource_start(pdev, i),
+ pci_resource_len(pdev, i));
+ }
+}
+
+static void __devexit
+net2272_rdk2_remove(struct pci_dev *pdev, struct net2272 *dev)
+{
+ int i;
+
+ /* disable fpga interrupts
+ writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) &
+ ~(1 << PCI_INTERRUPT_ENABLE),
+ dev->rdk1.plx9054_base_addr + INTCSR);
+ */
+
+ /* clean up resources allocated during probe() */
+ iounmap(dev->rdk2.fpga_base_addr);
+
+ for (i = 0; i < 2; ++i)
+ release_mem_region(pci_resource_start(pdev, i),
+ pci_resource_len(pdev, i));
+}
+
+static void __devexit
+net2272_pci_remove(struct pci_dev *pdev)
+{
+ struct net2272 *dev = pci_get_drvdata(pdev);
+
+ net2272_remove(dev);
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_RDK1: net2272_rdk1_remove(pdev, dev); break;
+ case PCI_DEVICE_ID_RDK2: net2272_rdk2_remove(pdev, dev); break;
+ default: BUG();
+ }
+
+ pci_disable_device(pdev);
+
+ kfree(dev);
+}
+
+/* Table of matching PCI IDs */
+static struct pci_device_id __devinitdata pci_ids[] = {
+ { /* RDK 1 card */
+ .class = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe),
+ .class_mask = 0,
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_RDK1,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { /* RDK 2 card */
+ .class = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe),
+ .class_mask = 0,
+ .vendor = PCI_VENDOR_ID_PLX,
+ .device = PCI_DEVICE_ID_RDK2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+static struct pci_driver net2272_pci_driver = {
+ .name = driver_name,
+ .id_table = pci_ids,
+
+ .probe = net2272_pci_probe,
+ .remove = __devexit_p(net2272_pci_remove),
+};
+
+#else
+# define pci_register_driver(x) 1
+# define pci_unregister_driver(x) 1
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+static int __devinit
+net2272_plat_probe(struct platform_device *pdev)
+{
+ struct net2272 *dev;
+ int ret;
+ unsigned int irqflags;
+ resource_size_t base, len;
+ struct resource *iomem, *iomem_bus, *irq_res;
+
+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ iomem_bus = platform_get_resource(pdev, IORESOURCE_BUS, 0);
+ if (!irq_res || !iomem) {
+ dev_err(&pdev->dev, "must provide irq/base addr");
+ return -EINVAL;
+ }
+
+ dev = net2272_probe_init(&pdev->dev, irq_res->start);
+ if (IS_ERR(dev))
+ return PTR_ERR(dev);
+
+ irqflags = 0;
+ if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE)
+ irqflags |= IRQF_TRIGGER_RISING;
+ if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE)
+ irqflags |= IRQF_TRIGGER_FALLING;
+ if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL)
+ irqflags |= IRQF_TRIGGER_HIGH;
+ if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL)
+ irqflags |= IRQF_TRIGGER_LOW;
+
+ base = iomem->start;
+ len = resource_size(iomem);
+ if (iomem_bus)
+ dev->base_shift = iomem_bus->start;
+
+ if (!request_mem_region(base, len, driver_name)) {
+ dev_dbg(dev->dev, "get request memory region!\n");
+ ret = -EBUSY;
+ goto err;
+ }
+ dev->base_addr = ioremap_nocache(base, len);
+ if (!dev->base_addr) {
+ dev_dbg(dev->dev, "can't map memory\n");
+ ret = -EFAULT;
+ goto err_req;
+ }
+
+ ret = net2272_probe_fin(dev, IRQF_TRIGGER_LOW);
+ if (ret)
+ goto err_io;
+
+ platform_set_drvdata(pdev, dev);
+ dev_info(&pdev->dev, "running in 16-bit, %sbyte swap local bus mode\n",
+ (net2272_read(dev, LOCCTL) & (1 << BYTE_SWAP)) ? "" : "no ");
+
+ the_controller = dev;
+
+ return 0;
+
+ err_io:
+ iounmap(dev->base_addr);
+ err_req:
+ release_mem_region(base, len);
+ err:
+ return ret;
+}
+
+static int __devexit
+net2272_plat_remove(struct platform_device *pdev)
+{
+ struct net2272 *dev = platform_get_drvdata(pdev);
+
+ net2272_remove(dev);
+
+ release_mem_region(pdev->resource[0].start,
+ resource_size(&pdev->resource[0]));
+
+ kfree(dev);
+
+ return 0;
+}
+
+static struct platform_driver net2272_plat_driver = {
+ .probe = net2272_plat_probe,
+ .remove = __devexit_p(net2272_plat_remove),
+ .driver = {
+ .name = driver_name,
+ .owner = THIS_MODULE,
+ },
+ /* FIXME .suspend, .resume */
+};
+
+static int __init net2272_init(void)
+{
+ return pci_register_driver(&net2272_pci_driver) &
+ platform_driver_register(&net2272_plat_driver);
+}
+module_init(net2272_init);
+
+static void __exit net2272_cleanup(void)
+{
+ pci_unregister_driver(&net2272_pci_driver);
+ platform_driver_unregister(&net2272_plat_driver);
+}
+module_exit(net2272_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("PLX Technology, Inc.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/net2272.h b/drivers/usb/gadget/net2272.h
new file mode 100644
index 000000000000..e59505789359
--- /dev/null
+++ b/drivers/usb/gadget/net2272.h
@@ -0,0 +1,601 @@
+/*
+ * PLX NET2272 high/full speed USB device controller
+ *
+ * Copyright (C) 2005-2006 PLX Technology, Inc.
+ * Copyright (C) 2006-2011 Analog Devices, Inc.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __NET2272_H__
+#define __NET2272_H__
+
+/* Main Registers */
+#define REGADDRPTR 0x00
+#define REGDATA 0x01
+#define IRQSTAT0 0x02
+#define ENDPOINT_0_INTERRUPT 0
+#define ENDPOINT_A_INTERRUPT 1
+#define ENDPOINT_B_INTERRUPT 2
+#define ENDPOINT_C_INTERRUPT 3
+#define VIRTUALIZED_ENDPOINT_INTERRUPT 4
+#define SETUP_PACKET_INTERRUPT 5
+#define DMA_DONE_INTERRUPT 6
+#define SOF_INTERRUPT 7
+#define IRQSTAT1 0x03
+#define CONTROL_STATUS_INTERRUPT 1
+#define VBUS_INTERRUPT 2
+#define SUSPEND_REQUEST_INTERRUPT 3
+#define SUSPEND_REQUEST_CHANGE_INTERRUPT 4
+#define RESUME_INTERRUPT 5
+#define ROOT_PORT_RESET_INTERRUPT 6
+#define RESET_STATUS 7
+#define PAGESEL 0x04
+#define DMAREQ 0x1c
+#define DMA_ENDPOINT_SELECT 0
+#define DREQ_POLARITY 1
+#define DACK_POLARITY 2
+#define EOT_POLARITY 3
+#define DMA_CONTROL_DACK 4
+#define DMA_REQUEST_ENABLE 5
+#define DMA_REQUEST 6
+#define DMA_BUFFER_VALID 7
+#define SCRATCH 0x1d
+#define IRQENB0 0x20
+#define ENDPOINT_0_INTERRUPT_ENABLE 0
+#define ENDPOINT_A_INTERRUPT_ENABLE 1
+#define ENDPOINT_B_INTERRUPT_ENABLE 2
+#define ENDPOINT_C_INTERRUPT_ENABLE 3
+#define VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE 4
+#define SETUP_PACKET_INTERRUPT_ENABLE 5
+#define DMA_DONE_INTERRUPT_ENABLE 6
+#define SOF_INTERRUPT_ENABLE 7
+#define IRQENB1 0x21
+#define VBUS_INTERRUPT_ENABLE 2
+#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3
+#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4
+#define RESUME_INTERRUPT_ENABLE 5
+#define ROOT_PORT_RESET_INTERRUPT_ENABLE 6
+#define LOCCTL 0x22
+#define DATA_WIDTH 0
+#define LOCAL_CLOCK_OUTPUT 1
+#define LOCAL_CLOCK_OUTPUT_OFF 0
+#define LOCAL_CLOCK_OUTPUT_3_75MHZ 1
+#define LOCAL_CLOCK_OUTPUT_7_5MHZ 2
+#define LOCAL_CLOCK_OUTPUT_15MHZ 3
+#define LOCAL_CLOCK_OUTPUT_30MHZ 4
+#define LOCAL_CLOCK_OUTPUT_60MHZ 5
+#define DMA_SPLIT_BUS_MODE 4
+#define BYTE_SWAP 5
+#define BUFFER_CONFIGURATION 6
+#define BUFFER_CONFIGURATION_EPA512_EPB512 0
+#define BUFFER_CONFIGURATION_EPA1024_EPB512 1
+#define BUFFER_CONFIGURATION_EPA1024_EPB1024 2
+#define BUFFER_CONFIGURATION_EPA1024DB 3
+#define CHIPREV_LEGACY 0x23
+#define NET2270_LEGACY_REV 0x40
+#define LOCCTL1 0x24
+#define DMA_MODE 0
+#define SLOW_DREQ 0
+#define FAST_DREQ 1
+#define BURST_MODE 2
+#define DMA_DACK_ENABLE 2
+#define CHIPREV_2272 0x25
+#define CHIPREV_NET2272_R1 0x10
+#define CHIPREV_NET2272_R1A 0x11
+/* USB Registers */
+#define USBCTL0 0x18
+#define IO_WAKEUP_ENABLE 1
+#define USB_DETECT_ENABLE 3
+#define USB_ROOT_PORT_WAKEUP_ENABLE 5
+#define USBCTL1 0x19
+#define VBUS_PIN 0
+#define USB_FULL_SPEED 1
+#define USB_HIGH_SPEED 2
+#define GENERATE_RESUME 3
+#define VIRTUAL_ENDPOINT_ENABLE 4
+#define FRAME0 0x1a
+#define FRAME1 0x1b
+#define OURADDR 0x30
+#define FORCE_IMMEDIATE 7
+#define USBDIAG 0x31
+#define FORCE_TRANSMIT_CRC_ERROR 0
+#define PREVENT_TRANSMIT_BIT_STUFF 1
+#define FORCE_RECEIVE_ERROR 2
+#define FAST_TIMES 4
+#define USBTEST 0x32
+#define TEST_MODE_SELECT 0
+#define NORMAL_OPERATION 0
+#define TEST_J 1
+#define TEST_K 2
+#define TEST_SE0_NAK 3
+#define TEST_PACKET 4
+#define TEST_FORCE_ENABLE 5
+#define XCVRDIAG 0x33
+#define FORCE_FULL_SPEED 2
+#define FORCE_HIGH_SPEED 3
+#define OPMODE 4
+#define NORMAL_OPERATION 0
+#define NON_DRIVING 1
+#define DISABLE_BITSTUFF_AND_NRZI_ENCODE 2
+#define LINESTATE 6
+#define SE0_STATE 0
+#define J_STATE 1
+#define K_STATE 2
+#define SE1_STATE 3
+#define VIRTOUT0 0x34
+#define VIRTOUT1 0x35
+#define VIRTIN0 0x36
+#define VIRTIN1 0x37
+#define SETUP0 0x40
+#define SETUP1 0x41
+#define SETUP2 0x42
+#define SETUP3 0x43
+#define SETUP4 0x44
+#define SETUP5 0x45
+#define SETUP6 0x46
+#define SETUP7 0x47
+/* Endpoint Registers (Paged via PAGESEL) */
+#define EP_DATA 0x05
+#define EP_STAT0 0x06
+#define DATA_IN_TOKEN_INTERRUPT 0
+#define DATA_OUT_TOKEN_INTERRUPT 1
+#define DATA_PACKET_TRANSMITTED_INTERRUPT 2
+#define DATA_PACKET_RECEIVED_INTERRUPT 3
+#define SHORT_PACKET_TRANSFERRED_INTERRUPT 4
+#define NAK_OUT_PACKETS 5
+#define BUFFER_EMPTY 6
+#define BUFFER_FULL 7
+#define EP_STAT1 0x07
+#define TIMEOUT 0
+#define USB_OUT_ACK_SENT 1
+#define USB_OUT_NAK_SENT 2
+#define USB_IN_ACK_RCVD 3
+#define USB_IN_NAK_SENT 4
+#define USB_STALL_SENT 5
+#define LOCAL_OUT_ZLP 6
+#define BUFFER_FLUSH 7
+#define EP_TRANSFER0 0x08
+#define EP_TRANSFER1 0x09
+#define EP_TRANSFER2 0x0a
+#define EP_IRQENB 0x0b
+#define DATA_IN_TOKEN_INTERRUPT_ENABLE 0
+#define DATA_OUT_TOKEN_INTERRUPT_ENABLE 1
+#define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2
+#define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3
+#define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 4
+#define EP_AVAIL0 0x0c
+#define EP_AVAIL1 0x0d
+#define EP_RSPCLR 0x0e
+#define EP_RSPSET 0x0f
+#define ENDPOINT_HALT 0
+#define ENDPOINT_TOGGLE 1
+#define NAK_OUT_PACKETS_MODE 2
+#define CONTROL_STATUS_PHASE_HANDSHAKE 3
+#define INTERRUPT_MODE 4
+#define AUTOVALIDATE 5
+#define HIDE_STATUS_PHASE 6
+#define ALT_NAK_OUT_PACKETS 7
+#define EP_MAXPKT0 0x28
+#define EP_MAXPKT1 0x29
+#define ADDITIONAL_TRANSACTION_OPPORTUNITIES 3
+#define NONE_ADDITIONAL_TRANSACTION 0
+#define ONE_ADDITIONAL_TRANSACTION 1
+#define TWO_ADDITIONAL_TRANSACTION 2
+#define EP_CFG 0x2a
+#define ENDPOINT_NUMBER 0
+#define ENDPOINT_DIRECTION 4
+#define ENDPOINT_TYPE 5
+#define ENDPOINT_ENABLE 7
+#define EP_HBW 0x2b
+#define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 0
+#define DATA0_PID 0
+#define DATA1_PID 1
+#define DATA2_PID 2
+#define MDATA_PID 3
+#define EP_BUFF_STATES 0x2c
+#define BUFFER_A_STATE 0
+#define BUFFER_B_STATE 2
+#define BUFF_FREE 0
+#define BUFF_VALID 1
+#define BUFF_LCL 2
+#define BUFF_USB 3
+
+/*---------------------------------------------------------------------------*/
+
+#define PCI_DEVICE_ID_RDK1 0x9054
+
+/* PCI-RDK EPLD Registers */
+#define RDK_EPLD_IO_REGISTER1 0x00000000
+#define RDK_EPLD_USB_RESET 0
+#define RDK_EPLD_USB_POWERDOWN 1
+#define RDK_EPLD_USB_WAKEUP 2
+#define RDK_EPLD_USB_EOT 3
+#define RDK_EPLD_DPPULL 4
+#define RDK_EPLD_IO_REGISTER2 0x00000004
+#define RDK_EPLD_BUSWIDTH 0
+#define RDK_EPLD_USER 2
+#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3
+#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4
+#define RDK_EPLD_STATUS_REGISTER 0x00000008
+#define RDK_EPLD_USB_LRESET 0
+#define RDK_EPLD_REVISION_REGISTER 0x0000000c
+
+/* PCI-RDK PLX 9054 Registers */
+#define INTCSR 0x68
+#define PCI_INTERRUPT_ENABLE 8
+#define LOCAL_INTERRUPT_INPUT_ENABLE 11
+#define LOCAL_INPUT_INTERRUPT_ACTIVE 15
+#define LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE 18
+#define LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE 19
+#define DMA_CHANNEL_0_INTERRUPT_ACTIVE 21
+#define DMA_CHANNEL_1_INTERRUPT_ACTIVE 22
+#define CNTRL 0x6C
+#define RELOAD_CONFIGURATION_REGISTERS 29
+#define PCI_ADAPTER_SOFTWARE_RESET 30
+#define DMAMODE0 0x80
+#define LOCAL_BUS_WIDTH 0
+#define INTERNAL_WAIT_STATES 2
+#define TA_READY_INPUT_ENABLE 6
+#define LOCAL_BURST_ENABLE 8
+#define SCATTER_GATHER_MODE 9
+#define DONE_INTERRUPT_ENABLE 10
+#define LOCAL_ADDRESSING_MODE 11
+#define DEMAND_MODE 12
+#define DMA_EOT_ENABLE 14
+#define FAST_SLOW_TERMINATE_MODE_SELECT 15
+#define DMA_CHANNEL_INTERRUPT_SELECT 17
+#define DMAPADR0 0x84
+#define DMALADR0 0x88
+#define DMASIZ0 0x8c
+#define DMADPR0 0x90
+#define DESCRIPTOR_LOCATION 0
+#define END_OF_CHAIN 1
+#define INTERRUPT_AFTER_TERMINAL_COUNT 2
+#define DIRECTION_OF_TRANSFER 3
+#define DMACSR0 0xa8
+#define CHANNEL_ENABLE 0
+#define CHANNEL_START 1
+#define CHANNEL_ABORT 2
+#define CHANNEL_CLEAR_INTERRUPT 3
+#define CHANNEL_DONE 4
+#define DMATHR 0xb0
+#define LBRD1 0xf8
+#define MEMORY_SPACE_LOCAL_BUS_WIDTH 0
+#define W8_BIT 0
+#define W16_BIT 1
+
+/* Special OR'ing of INTCSR bits */
+#define LOCAL_INTERRUPT_TEST \
+ ((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \
+ (1 << LOCAL_INTERRUPT_INPUT_ENABLE))
+
+#define DMA_CHANNEL_0_TEST \
+ ((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \
+ (1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE))
+
+#define DMA_CHANNEL_1_TEST \
+ ((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \
+ (1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE))
+
+/* EPLD Registers */
+#define RDK_EPLD_IO_REGISTER1 0x00000000
+#define RDK_EPLD_USB_RESET 0
+#define RDK_EPLD_USB_POWERDOWN 1
+#define RDK_EPLD_USB_WAKEUP 2
+#define RDK_EPLD_USB_EOT 3
+#define RDK_EPLD_DPPULL 4
+#define RDK_EPLD_IO_REGISTER2 0x00000004
+#define RDK_EPLD_BUSWIDTH 0
+#define RDK_EPLD_USER 2
+#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3
+#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4
+#define RDK_EPLD_STATUS_REGISTER 0x00000008
+#define RDK_EPLD_USB_LRESET 0
+#define RDK_EPLD_REVISION_REGISTER 0x0000000c
+
+#define EPLD_IO_CONTROL_REGISTER 0x400
+#define NET2272_RESET 0
+#define BUSWIDTH 1
+#define MPX_MODE 3
+#define USER 4
+#define DMA_TIMEOUT_ENABLE 5
+#define DMA_CTL_DACK 6
+#define EPLD_DMA_ENABLE 7
+#define EPLD_DMA_CONTROL_REGISTER 0x800
+#define SPLIT_DMA_MODE 0
+#define SPLIT_DMA_DIRECTION 1
+#define SPLIT_DMA_ENABLE 2
+#define SPLIT_DMA_INTERRUPT_ENABLE 3
+#define SPLIT_DMA_INTERRUPT 4
+#define EPLD_DMA_MODE 5
+#define EPLD_DMA_CONTROLLER_ENABLE 7
+#define SPLIT_DMA_ADDRESS_LOW 0xc00
+#define SPLIT_DMA_ADDRESS_HIGH 0x1000
+#define SPLIT_DMA_BYTE_COUNT_LOW 0x1400
+#define SPLIT_DMA_BYTE_COUNT_HIGH 0x1800
+#define EPLD_REVISION_REGISTER 0x1c00
+#define SPLIT_DMA_RAM 0x4000
+#define DMA_RAM_SIZE 0x1000
+
+/*---------------------------------------------------------------------------*/
+
+#define PCI_DEVICE_ID_RDK2 0x3272
+
+/* PCI-RDK version 2 registers */
+
+/* Main Control Registers */
+
+#define RDK2_IRQENB 0x00
+#define RDK2_IRQSTAT 0x04
+#define PB7 23
+#define PB6 22
+#define PB5 21
+#define PB4 20
+#define PB3 19
+#define PB2 18
+#define PB1 17
+#define PB0 16
+#define GP3 23
+#define GP2 23
+#define GP1 23
+#define GP0 23
+#define DMA_RETRY_ABORT 6
+#define DMA_PAUSE_DONE 5
+#define DMA_ABORT_DONE 4
+#define DMA_OUT_FIFO_TRANSFER_DONE 3
+#define DMA_LOCAL_DONE 2
+#define DMA_PCI_DONE 1
+#define NET2272_PCI_IRQ 0
+
+#define RDK2_LOCCTLRDK 0x08
+#define CHIP_RESET 3
+#define SPLIT_DMA 2
+#define MULTIPLEX_MODE 1
+#define BUS_WIDTH 0
+
+#define RDK2_GPIOCTL 0x10
+#define GP3_OUT_ENABLE 7
+#define GP2_OUT_ENABLE 6
+#define GP1_OUT_ENABLE 5
+#define GP0_OUT_ENABLE 4
+#define GP3_DATA 3
+#define GP2_DATA 2
+#define GP1_DATA 1
+#define GP0_DATA 0
+
+#define RDK2_LEDSW 0x14
+#define LED3 27
+#define LED2 26
+#define LED1 25
+#define LED0 24
+#define PBUTTON 16
+#define DIPSW 0
+
+#define RDK2_DIAG 0x18
+#define RDK2_FAST_TIMES 2
+#define FORCE_PCI_SERR 1
+#define FORCE_PCI_INT 0
+#define RDK2_FPGAREV 0x1C
+
+/* Dma Control registers */
+#define RDK2_DMACTL 0x80
+#define ADDR_HOLD 24
+#define RETRY_COUNT 16 /* 23:16 */
+#define FIFO_THRESHOLD 11 /* 15:11 */
+#define MEM_WRITE_INVALIDATE 10
+#define READ_MULTIPLE 9
+#define READ_LINE 8
+#define RDK2_DMA_MODE 6 /* 7:6 */
+#define CONTROL_DACK 5
+#define EOT_ENABLE 4
+#define EOT_POLARITY 3
+#define DACK_POLARITY 2
+#define DREQ_POLARITY 1
+#define DMA_ENABLE 0
+
+#define RDK2_DMASTAT 0x84
+#define GATHER_COUNT 12 /* 14:12 */
+#define FIFO_COUNT 6 /* 11:6 */
+#define FIFO_FLUSH 5
+#define FIFO_TRANSFER 4
+#define PAUSE_DONE 3
+#define ABORT_DONE 2
+#define DMA_ABORT 1
+#define DMA_START 0
+
+#define RDK2_DMAPCICOUNT 0x88
+#define DMA_DIRECTION 31
+#define DMA_PCI_BYTE_COUNT 0 /* 0:23 */
+
+#define RDK2_DMALOCCOUNT 0x8C /* 0:23 dma local byte count */
+
+#define RDK2_DMAADDR 0x90 /* 2:31 PCI bus starting address */
+
+/*---------------------------------------------------------------------------*/
+
+#define REG_INDEXED_THRESHOLD (1 << 5)
+
+/* DRIVER DATA STRUCTURES and UTILITIES */
+struct net2272_ep {
+ struct usb_ep ep;
+ struct net2272 *dev;
+ unsigned long irqs;
+
+ /* analogous to a host-side qh */
+ struct list_head queue;
+ const struct usb_endpoint_descriptor *desc;
+ unsigned num:8,
+ fifo_size:12,
+ stopped:1,
+ wedged:1,
+ is_in:1,
+ is_iso:1,
+ dma:1,
+ not_empty:1;
+};
+
+struct net2272 {
+ /* each device provides one gadget, several endpoints */
+ struct usb_gadget gadget;
+ struct device *dev;
+ unsigned short dev_id;
+
+ spinlock_t lock;
+ struct net2272_ep ep[4];
+ struct usb_gadget_driver *driver;
+ unsigned protocol_stall:1,
+ softconnect:1,
+ is_selfpowered:1,
+ wakeup:1,
+ dma_eot_polarity:1,
+ dma_dack_polarity:1,
+ dma_dreq_polarity:1,
+ dma_busy:1;
+ u16 chiprev;
+ u8 pagesel;
+
+ unsigned int irq;
+ unsigned short fifo_mode;
+
+ unsigned int base_shift;
+ u16 __iomem *base_addr;
+ union {
+#ifdef CONFIG_PCI
+ struct {
+ void __iomem *plx9054_base_addr;
+ void __iomem *epld_base_addr;
+ } rdk1;
+ struct {
+ /* Bar0, Bar1 is base_addr both mem-mapped */
+ void __iomem *fpga_base_addr;
+ } rdk2;
+#endif
+ };
+};
+
+static void __iomem *
+net2272_reg_addr(struct net2272 *dev, unsigned int reg)
+{
+ return dev->base_addr + (reg << dev->base_shift);
+}
+
+static void
+net2272_write(struct net2272 *dev, unsigned int reg, u8 value)
+{
+ if (reg >= REG_INDEXED_THRESHOLD) {
+ /*
+ * Indexed register; use REGADDRPTR/REGDATA
+ * - Save and restore REGADDRPTR. This prevents REGADDRPTR from
+ * changes between other code sections, but it is time consuming.
+ * - Performance tips: either do not save and restore REGADDRPTR (if it
+ * is safe) or do save/restore operations only in critical sections.
+ u8 tmp = readb(dev->base_addr + REGADDRPTR);
+ */
+ writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
+ writeb(value, net2272_reg_addr(dev, REGDATA));
+ /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
+ } else
+ writeb(value, net2272_reg_addr(dev, reg));
+}
+
+static u8
+net2272_read(struct net2272 *dev, unsigned int reg)
+{
+ u8 ret;
+
+ if (reg >= REG_INDEXED_THRESHOLD) {
+ /*
+ * Indexed register; use REGADDRPTR/REGDATA
+ * - Save and restore REGADDRPTR. This prevents REGADDRPTR from
+ * changes between other code sections, but it is time consuming.
+ * - Performance tips: either do not save and restore REGADDRPTR (if it
+ * is safe) or do save/restore operations only in critical sections.
+ u8 tmp = readb(dev->base_addr + REGADDRPTR);
+ */
+ writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
+ ret = readb(net2272_reg_addr(dev, REGDATA));
+ /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
+ } else
+ ret = readb(net2272_reg_addr(dev, reg));
+
+ return ret;
+}
+
+static void
+net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value)
+{
+ struct net2272 *dev = ep->dev;
+
+ if (dev->pagesel != ep->num) {
+ net2272_write(dev, PAGESEL, ep->num);
+ dev->pagesel = ep->num;
+ }
+ net2272_write(dev, reg, value);
+}
+
+static u8
+net2272_ep_read(struct net2272_ep *ep, unsigned int reg)
+{
+ struct net2272 *dev = ep->dev;
+
+ if (dev->pagesel != ep->num) {
+ net2272_write(dev, PAGESEL, ep->num);
+ dev->pagesel = ep->num;
+ }
+ return net2272_read(dev, reg);
+}
+
+static void allow_status(struct net2272_ep *ep)
+{
+ /* ep0 only */
+ net2272_ep_write(ep, EP_RSPCLR,
+ (1 << CONTROL_STATUS_PHASE_HANDSHAKE) |
+ (1 << ALT_NAK_OUT_PACKETS) |
+ (1 << NAK_OUT_PACKETS_MODE));
+ ep->stopped = 1;
+}
+
+static void set_halt(struct net2272_ep *ep)
+{
+ /* ep0 and bulk/intr endpoints */
+ net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE);
+ net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT);
+}
+
+static void clear_halt(struct net2272_ep *ep)
+{
+ /* ep0 and bulk/intr endpoints */
+ net2272_ep_write(ep, EP_RSPCLR,
+ (1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE));
+}
+
+/* count (<= 4) bytes in the next fifo write will be valid */
+static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count)
+{
+ /* net2272_ep_write will truncate to u8 for us */
+ net2272_ep_write(ep, EP_TRANSFER2, count >> 16);
+ net2272_ep_write(ep, EP_TRANSFER1, count >> 8);
+ net2272_ep_write(ep, EP_TRANSFER0, count);
+}
+
+struct net2272_request {
+ struct usb_request req;
+ struct list_head queue;
+ unsigned mapped:1,
+ valid:1;
+};
+
+#endif
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index b435ed67dd5c..e18862c5b059 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -110,7 +110,7 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
/* for link power management(LPM) feature */
static unsigned int hird;
module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
+MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index e3374c8f7b3f..b3958b3d3163 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -189,6 +189,100 @@ static void s5p_ehci_shutdown(struct platform_device *pdev)
hcd->driver->shutdown(hcd);
}
+#ifdef CONFIG_PM
+static int s5p_ehci_suspend(struct device *dev)
+{
+ struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = s5p_ehci->hcd;
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
+ unsigned long flags;
+ int rc = 0;
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(20);
+
+ /*
+ * Root hub was already suspended. Disable irq emission and
+ * mark HW unaccessible. The PM and USB cores make sure that
+ * the root hub is either suspended or stopped.
+ */
+ ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
+ spin_lock_irqsave(&ehci->lock, flags);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
+ (void)ehci_readl(ehci, &ehci->regs->intr_enable);
+
+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+ spin_unlock_irqrestore(&ehci->lock, flags);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+ return rc;
+}
+
+static int s5p_ehci_resume(struct device *dev)
+{
+ struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = s5p_ehci->hcd;
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
+
+ if (pdata && pdata->phy_init)
+ pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+ if (time_before(jiffies, ehci->next_statechange))
+ msleep(100);
+
+ /* Mark hardware accessible again as we are out of D3 state by now */
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
+ int mask = INTR_MASK;
+
+ ehci_prepare_ports_for_controller_resume(ehci);
+ if (!hcd->self.root_hub->do_remote_wakeup)
+ mask &= ~STS_PCD;
+ ehci_writel(ehci, mask, &ehci->regs->intr_enable);
+ ehci_readl(ehci, &ehci->regs->intr_enable);
+ return 0;
+ }
+
+ usb_root_hub_lost_power(hcd->self.root_hub);
+
+ (void) ehci_halt(ehci);
+ (void) ehci_reset(ehci);
+
+ /* emptying the schedule aborts any urbs */
+ spin_lock_irq(&ehci->lock);
+ if (ehci->reclaim)
+ end_unlink_async(ehci);
+ ehci_work(ehci);
+ spin_unlock_irq(&ehci->lock);
+
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
+
+ /* here we "know" root ports should always stay powered */
+ ehci_port_power(ehci, 1);
+
+ hcd->state = HC_STATE_SUSPENDED;
+
+ return 0;
+}
+#else
+#define s5p_ehci_suspend NULL
+#define s5p_ehci_resume NULL
+#endif
+
+static const struct dev_pm_ops s5p_ehci_pm_ops = {
+ .suspend = s5p_ehci_suspend,
+ .resume = s5p_ehci_resume,
+};
+
static struct platform_driver s5p_ehci_driver = {
.probe = s5p_ehci_probe,
.remove = __devexit_p(s5p_ehci_remove),
@@ -196,6 +290,7 @@ static struct platform_driver s5p_ehci_driver = {
.driver = {
.name = "s5p-ehci",
.owner = THIS_MODULE,
+ .pm = &s5p_ehci_pm_ops,
}
};
diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 1f50b4468e87..e9b0f043455d 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -266,11 +266,11 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
xhci_dbg(xhci, "Interrupter target = 0x%x\n",
GET_INTR_TARGET(le32_to_cpu(trb->link.intr_target)));
xhci_dbg(xhci, "Cycle bit = %u\n",
- (unsigned int) (le32_to_cpu(trb->link.control) & TRB_CYCLE));
+ le32_to_cpu(trb->link.control) & TRB_CYCLE);
xhci_dbg(xhci, "Toggle cycle bit = %u\n",
- (unsigned int) (le32_to_cpu(trb->link.control) & LINK_TOGGLE));
+ le32_to_cpu(trb->link.control) & LINK_TOGGLE);
xhci_dbg(xhci, "No Snoop bit = %u\n",
- (unsigned int) (le32_to_cpu(trb->link.control) & TRB_NO_SNOOP));
+ le32_to_cpu(trb->link.control) & TRB_NO_SNOOP);
break;
case TRB_TYPE(TRB_TRANSFER):
address = le64_to_cpu(trb->trans_event.buffer);
@@ -284,9 +284,9 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
address = le64_to_cpu(trb->event_cmd.cmd_trb);
xhci_dbg(xhci, "Command TRB pointer = %llu\n", address);
xhci_dbg(xhci, "Completion status = %u\n",
- (unsigned int) GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status)));
+ GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status)));
xhci_dbg(xhci, "Flags = 0x%x\n",
- (unsigned int) le32_to_cpu(trb->event_cmd.flags));
+ le32_to_cpu(trb->event_cmd.flags));
break;
default:
xhci_dbg(xhci, "Unknown TRB with TRB type ID %u\n",
@@ -318,10 +318,10 @@ void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg)
for (i = 0; i < TRBS_PER_SEGMENT; ++i) {
trb = &seg->trbs[i];
xhci_dbg(xhci, "@%016llx %08x %08x %08x %08x\n", addr,
- (u32)lower_32_bits(le64_to_cpu(trb->link.segment_ptr)),
- (u32)upper_32_bits(le64_to_cpu(trb->link.segment_ptr)),
- (unsigned int) le32_to_cpu(trb->link.intr_target),
- (unsigned int) le32_to_cpu(trb->link.control));
+ lower_32_bits(le64_to_cpu(trb->link.segment_ptr)),
+ upper_32_bits(le64_to_cpu(trb->link.segment_ptr)),
+ le32_to_cpu(trb->link.intr_target),
+ le32_to_cpu(trb->link.control));
addr += sizeof(*trb);
}
}
@@ -402,8 +402,8 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst)
addr,
lower_32_bits(le64_to_cpu(entry->seg_addr)),
upper_32_bits(le64_to_cpu(entry->seg_addr)),
- (unsigned int) le32_to_cpu(entry->seg_size),
- (unsigned int) le32_to_cpu(entry->rsvd));
+ le32_to_cpu(entry->seg_size),
+ le32_to_cpu(entry->rsvd));
addr += sizeof(*entry);
}
}
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 0f8e1d29a858..1370db808fc6 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -89,8 +89,8 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
return;
prev->next = next;
if (link_trbs) {
- prev->trbs[TRBS_PER_SEGMENT-1].link.
- segment_ptr = cpu_to_le64(next->dma);
+ prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr =
+ cpu_to_le64(next->dma);
/* Set the last TRB in the segment to have a TRB type ID of Link TRB */
val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control);
@@ -187,8 +187,8 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
if (link_trbs) {
/* See section 4.9.2.1 and 6.4.4.1 */
- prev->trbs[TRBS_PER_SEGMENT-1].link.
- control |= cpu_to_le32(LINK_TOGGLE);
+ prev->trbs[TRBS_PER_SEGMENT-1].link.control |=
+ cpu_to_le32(LINK_TOGGLE);
xhci_dbg(xhci, "Wrote link toggle flag to"
" segment %p (virtual), 0x%llx (DMA)\n",
prev, (unsigned long long)prev->dma);
@@ -549,8 +549,8 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
addr = cur_ring->first_seg->dma |
SCT_FOR_CTX(SCT_PRI_TR) |
cur_ring->cycle_state;
- stream_info->stream_ctx_array[cur_stream].
- stream_ring = cpu_to_le64(addr);
+ stream_info->stream_ctx_array[cur_stream].stream_ring =
+ cpu_to_le64(addr);
xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n",
cur_stream, (unsigned long long) addr);
@@ -786,7 +786,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n",
slot_id,
&xhci->dcbaa->dev_context_ptrs[slot_id],
- (unsigned long long) le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
+ le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
return 1;
fail:
@@ -890,19 +890,19 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
/* 3) Only the control endpoint is valid - one endpoint context */
- slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | (u32) udev->route);
+ slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | udev->route);
switch (udev->speed) {
case USB_SPEED_SUPER:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_SS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_SS);
break;
case USB_SPEED_HIGH:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_HS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_HS);
break;
case USB_SPEED_FULL:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_FS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_FS);
break;
case USB_SPEED_LOW:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_LS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_LS);
break;
case USB_SPEED_WIRELESS:
xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
@@ -916,7 +916,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
port_num = xhci_find_real_port_number(xhci, udev);
if (!port_num)
return -EINVAL;
- slot_ctx->dev_info2 |= cpu_to_le32((u32) ROOT_HUB_PORT(port_num));
+ slot_ctx->dev_info2 |= cpu_to_le32(ROOT_HUB_PORT(port_num));
/* Set the port number in the virtual_device to the faked port number */
for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
top_dev = top_dev->parent)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 800f417c7309..e5530181baa3 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -113,15 +113,13 @@ static int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
if (ring == xhci->event_ring)
return trb == &seg->trbs[TRBS_PER_SEGMENT];
else
- return (le32_to_cpu(trb->link.control) & TRB_TYPE_BITMASK)
- == TRB_TYPE(TRB_LINK);
+ return TRB_TYPE_LINK_LE32(trb->link.control);
}
static int enqueue_is_link_trb(struct xhci_ring *ring)
{
struct xhci_link_trb *link = &ring->enqueue->link;
- return ((le32_to_cpu(link->control) & TRB_TYPE_BITMASK) ==
- TRB_TYPE(TRB_LINK));
+ return TRB_TYPE_LINK_LE32(link->control);
}
/* Updates trb to point to the next TRB in the ring, and updates seg if the next
@@ -372,7 +370,7 @@ static struct xhci_segment *find_trb_seg(
while (cur_seg->trbs > trb ||
&cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) {
generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic;
- if (le32_to_cpu(generic_trb->field[3]) & LINK_TOGGLE)
+ if (generic_trb->field[3] & cpu_to_le32(LINK_TOGGLE))
*cycle_state ^= 0x1;
cur_seg = cur_seg->next;
if (cur_seg == start_seg)
@@ -489,8 +487,8 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
}
trb = &state->new_deq_ptr->generic;
- if ((le32_to_cpu(trb->field[3]) & TRB_TYPE_BITMASK) ==
- TRB_TYPE(TRB_LINK) && (le32_to_cpu(trb->field[3]) & LINK_TOGGLE))
+ if (TRB_TYPE_LINK_LE32(trb->field[3]) &&
+ (trb->field[3] & cpu_to_le32(LINK_TOGGLE)))
state->new_cycle_state ^= 0x1;
next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
@@ -525,8 +523,7 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
for (cur_seg = cur_td->start_seg, cur_trb = cur_td->first_trb;
true;
next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
- if ((le32_to_cpu(cur_trb->generic.field[3]) & TRB_TYPE_BITMASK)
- == TRB_TYPE(TRB_LINK)) {
+ if (TRB_TYPE_LINK_LE32(cur_trb->generic.field[3])) {
/* Unchain any chained Link TRBs, but
* leave the pointers intact.
*/
@@ -1000,7 +997,7 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci,
* but we don't care.
*/
xhci_dbg(xhci, "Ignoring reset ep completion code of %u\n",
- (unsigned int) GET_COMP_CODE(le32_to_cpu(event->status)));
+ GET_COMP_CODE(le32_to_cpu(event->status)));
/* HW with the reset endpoint quirk needs to have a configure endpoint
* command complete before the endpoint can be used. Queue that here
@@ -1458,7 +1455,8 @@ static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci,
* endpoint anyway. Check if a babble halted the
* endpoint.
*/
- if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) == EP_STATE_HALTED)
+ if ((ep_ctx->ep_info & cpu_to_le32(EP_STATE_MASK)) ==
+ cpu_to_le32(EP_STATE_HALTED))
return 1;
return 0;
@@ -1752,10 +1750,8 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
for (cur_trb = ep_ring->dequeue,
cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
- if ((le32_to_cpu(cur_trb->generic.field[3]) &
- TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) &&
- (le32_to_cpu(cur_trb->generic.field[3]) &
- TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK))
+ if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
+ !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
}
len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) -
@@ -1888,10 +1884,8 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
for (cur_trb = ep_ring->dequeue, cur_seg = ep_ring->deq_seg;
cur_trb != event_trb;
next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
- if ((le32_to_cpu(cur_trb->generic.field[3]) &
- TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) &&
- (le32_to_cpu(cur_trb->generic.field[3]) &
- TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK))
+ if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
+ !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
td->urb->actual_length +=
TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
}
@@ -2046,8 +2040,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
ep_index);
xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
- (unsigned int) (le32_to_cpu(event->flags)
- & TRB_TYPE_BITMASK)>>10);
+ (le32_to_cpu(event->flags) &
+ TRB_TYPE_BITMASK)>>10);
xhci_print_trb_offsets(xhci, (union xhci_trb *) event);
if (ep->skip) {
ep->skip = false;
@@ -2104,9 +2098,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
* corresponding TD has been cancelled. Just ignore
* the TD.
*/
- if ((le32_to_cpu(event_trb->generic.field[3])
- & TRB_TYPE_BITMASK)
- == TRB_TYPE(TRB_TR_NOOP)) {
+ if (TRB_TYPE_NOOP_LE32(event_trb->generic.field[3])) {
xhci_dbg(xhci,
"event_trb is a no-op TRB. Skip it\n");
goto cleanup;
@@ -2432,7 +2424,7 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
next->link.control |= cpu_to_le32(TRB_CHAIN);
wmb();
- next->link.control ^= cpu_to_le32((u32) TRB_CYCLE);
+ next->link.control ^= cpu_to_le32(TRB_CYCLE);
/* Toggle the cycle bit after the last ring segment. */
if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) {
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 06e7023258d0..d0a65401670b 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1340,8 +1340,8 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
/* If the HC already knows the endpoint is disabled,
* or the HCD has noted it is disabled, ignore this request
*/
- if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) ==
- EP_STATE_DISABLED ||
+ if (((ep_ctx->ep_info & cpu_to_le32(EP_STATE_MASK)) ==
+ cpu_to_le32(EP_STATE_DISABLED)) ||
le32_to_cpu(ctrl_ctx->drop_flags) &
xhci_get_endpoint_flag(&ep->desc)) {
xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
@@ -1732,8 +1732,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
/* Enqueue pointer can be left pointing to the link TRB,
* we must handle that
*/
- if ((le32_to_cpu(command->command_trb->link.control)
- & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+ if (TRB_TYPE_LINK_LE32(command->command_trb->link.control))
command->command_trb =
xhci->cmd_ring->enq_seg->next->trbs;
@@ -2533,8 +2532,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
/* Enqueue pointer can be left pointing to the link TRB,
* we must handle that
*/
- if ((le32_to_cpu(reset_device_cmd->command_trb->link.control)
- & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+ if (TRB_TYPE_LINK_LE32(reset_device_cmd->command_trb->link.control))
reset_device_cmd->command_trb =
xhci->cmd_ring->enq_seg->next->trbs;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 7d1ea3bf5e1f..a2cc76741695 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1070,6 +1070,13 @@ union xhci_trb {
/* Get NEC firmware revision. */
#define TRB_NEC_GET_FW 49
+#define TRB_TYPE_LINK(x) (((x) & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+/* Above, but for __le32 types -- can avoid work by swapping constants: */
+#define TRB_TYPE_LINK_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
+ cpu_to_le32(TRB_TYPE(TRB_LINK)))
+#define TRB_TYPE_NOOP_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
+ cpu_to_le32(TRB_TYPE(TRB_TR_NOOP)))
+
#define NEC_FW_MINOR(p) (((p) >> 0) & 0xff)
#define NEC_FW_MAJOR(p) (((p) >> 8) & 0xff)
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile
index b8798ad16278..ce08345fa15a 100644
--- a/drivers/usb/renesas_usbhs/Makefile
+++ b/drivers/usb/renesas_usbhs/Makefile
@@ -4,6 +4,6 @@
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
-renesas_usbhs-y := common.o mod.o pipe.o
+renesas_usbhs-y := common.o mod.o pipe.o fifo.o
renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_UDC) += mod_gadget.o
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index f3664d6af661..665259aec871 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -304,6 +304,8 @@ static int __devinit usbhs_probe(struct platform_device *pdev)
priv->dparam->pipe_type = usbhsc_default_pipe_type;
priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
}
+ if (!priv->dparam->pio_dma_border)
+ priv->dparam->pio_dma_border = 64; /* 64byte */
/* FIXME */
/* runtime power control ? */
@@ -323,10 +325,14 @@ static int __devinit usbhs_probe(struct platform_device *pdev)
if (ret < 0)
goto probe_end_iounmap;
- ret = usbhs_mod_probe(priv);
+ ret = usbhs_fifo_probe(priv);
if (ret < 0)
goto probe_end_pipe_exit;
+ ret = usbhs_mod_probe(priv);
+ if (ret < 0)
+ goto probe_end_fifo_exit;
+
/* dev_set_drvdata should be called after usbhs_mod_init */
dev_set_drvdata(&pdev->dev, priv);
@@ -374,6 +380,8 @@ probe_end_call_remove:
usbhs_platform_call(priv, hardware_exit, pdev);
probe_end_mod_exit:
usbhs_mod_remove(priv);
+probe_end_fifo_exit:
+ usbhs_fifo_remove(priv);
probe_end_pipe_exit:
usbhs_pipe_remove(priv);
probe_end_iounmap:
@@ -404,6 +412,7 @@ static int __devexit usbhs_remove(struct platform_device *pdev)
usbhs_platform_call(priv, hardware_exit, pdev);
usbhs_mod_remove(priv);
+ usbhs_fifo_remove(priv);
usbhs_pipe_remove(priv);
iounmap(priv->base);
kfree(priv);
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index 0aadcb402764..b410463a1212 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -36,6 +36,12 @@ struct usbhs_priv;
#define CFIFO 0x0014
#define CFIFOSEL 0x0020
#define CFIFOCTR 0x0022
+#define D0FIFO 0x0100
+#define D0FIFOSEL 0x0028
+#define D0FIFOCTR 0x002A
+#define D1FIFO 0x0120
+#define D1FIFOSEL 0x002C
+#define D1FIFOCTR 0x002E
#define INTENB0 0x0030
#define INTENB1 0x0032
#define BRDYENB 0x0036
@@ -60,6 +66,30 @@ struct usbhs_priv;
#define PIPEMAXP 0x006C
#define PIPEPERI 0x006E
#define PIPEnCTR 0x0070
+#define PIPE1TRE 0x0090
+#define PIPE1TRN 0x0092
+#define PIPE2TRE 0x0094
+#define PIPE2TRN 0x0096
+#define PIPE3TRE 0x0098
+#define PIPE3TRN 0x009A
+#define PIPE4TRE 0x009C
+#define PIPE4TRN 0x009E
+#define PIPE5TRE 0x00A0
+#define PIPE5TRN 0x00A2
+#define PIPEBTRE 0x00A4
+#define PIPEBTRN 0x00A6
+#define PIPECTRE 0x00A8
+#define PIPECTRN 0x00AA
+#define PIPEDTRE 0x00AC
+#define PIPEDTRN 0x00AE
+#define PIPEETRE 0x00B0
+#define PIPEETRN 0x00B2
+#define PIPEFTRE 0x00B4
+#define PIPEFTRN 0x00B6
+#define PIPE9TRE 0x00B8
+#define PIPE9TRN 0x00BA
+#define PIPEATRE 0x00BC
+#define PIPEATRN 0x00BE
/* SYSCFG */
#define SCKE (1 << 10) /* USB Module Clock Enable */
@@ -78,6 +108,7 @@ struct usbhs_priv;
#define RHST_HIGH_SPEED 3 /* High-speed connection */
/* CFIFOSEL */
+#define DREQE (1 << 12) /* DMA Transfer Request Enable */
#define MBW_32 (0x2 << 10) /* CFIFO Port Access Bit Width */
/* CFIFOCTR */
@@ -164,6 +195,10 @@ struct usbhs_priv;
#define CCPL (1 << 2) /* Control Transfer End Enable */
+/* PIPEnTRE */
+#define TRENB (1 << 9) /* Transaction Counter Enable */
+#define TRCLR (1 << 8) /* Transaction Counter Clear */
+
/* FRMNUM */
#define FRNM_MASK (0x7FF)
@@ -194,6 +229,11 @@ struct usbhs_priv {
* pipe control
*/
struct usbhs_pipe_info pipe_info;
+
+ /*
+ * fifo control
+ */
+ struct usbhs_fifo_info fifo_info;
};
/*
@@ -204,6 +244,10 @@ void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data);
void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data);
int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev);
+
+#define usbhs_lock(p, f) spin_lock_irqsave(usbhs_priv_to_lock(p), f)
+#define usbhs_unlock(p, f) spin_unlock_irqrestore(usbhs_priv_to_lock(p), f)
+
/*
* sysconfig
*/
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
new file mode 100644
index 000000000000..2016a2448ccb
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -0,0 +1,994 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+#include <linux/delay.h>
+#include <linux/io.h>
+#include "./common.h"
+#include "./pipe.h"
+
+#define usbhsf_get_cfifo(p) (&((p)->fifo_info.cfifo))
+#define usbhsf_get_d0fifo(p) (&((p)->fifo_info.d0fifo))
+#define usbhsf_get_d1fifo(p) (&((p)->fifo_info.d1fifo))
+
+#define usbhsf_fifo_is_busy(f) ((f)->pipe) /* see usbhs_pipe_select_fifo */
+
+/*
+ * packet info function
+ */
+static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_err(dev, "null handler\n");
+
+ return -EINVAL;
+}
+
+static struct usbhs_pkt_handle usbhsf_null_handler = {
+ .prepare = usbhsf_null_handle,
+ .try_run = usbhsf_null_handle,
+};
+
+void usbhs_pkt_init(struct usbhs_pkt *pkt)
+{
+ pkt->dma = DMA_ADDR_INVALID;
+ INIT_LIST_HEAD(&pkt->node);
+}
+
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+ struct usbhs_pkt_handle *handler,
+ void *buf, int len, int zero)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ unsigned long flags;
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ if (!handler) {
+ dev_err(dev, "no handler function\n");
+ handler = &usbhsf_null_handler;
+ }
+
+ list_del_init(&pkt->node);
+ list_add_tail(&pkt->node, &pipe->list);
+
+ pkt->pipe = pipe;
+ pkt->buf = buf;
+ pkt->handler = handler;
+ pkt->length = len;
+ pkt->zero = zero;
+ pkt->actual = 0;
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ usbhs_pkt_start(pipe);
+}
+
+static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)
+{
+ list_del_init(&pkt->node);
+}
+
+static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
+{
+ if (list_empty(&pipe->list))
+ return NULL;
+
+ return list_entry(pipe->list.next, struct usbhs_pkt, node);
+}
+
+struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ unsigned long flags;
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ if (!pkt)
+ pkt = __usbhsf_pkt_get(pipe);
+
+ if (pkt)
+ __usbhsf_pkt_del(pkt);
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ return pkt;
+}
+
+int __usbhs_pkt_handler(struct usbhs_pipe *pipe, int type)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+ struct usbhs_pkt *pkt;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int (*func)(struct usbhs_pkt *pkt, int *is_done);
+ unsigned long flags;
+ int ret = 0;
+ int is_done = 0;
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ pkt = __usbhsf_pkt_get(pipe);
+ if (!pkt)
+ goto __usbhs_pkt_handler_end;
+
+ switch (type) {
+ case USBHSF_PKT_PREPARE:
+ func = pkt->handler->prepare;
+ break;
+ case USBHSF_PKT_TRY_RUN:
+ func = pkt->handler->try_run;
+ break;
+ case USBHSF_PKT_DMA_DONE:
+ func = pkt->handler->dma_done;
+ break;
+ default:
+ dev_err(dev, "unknown pkt hander\n");
+ goto __usbhs_pkt_handler_end;
+ }
+
+ ret = func(pkt, &is_done);
+
+ if (is_done)
+ __usbhsf_pkt_del(pkt);
+
+__usbhs_pkt_handler_end:
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ if (is_done) {
+ info->done(pkt);
+ usbhs_pkt_start(pipe);
+ }
+
+ return ret;
+}
+
+/*
+ * irq enable/disable function
+ */
+#define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, bempsts, e)
+#define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, brdysts, e)
+#define usbhsf_irq_callback_ctrl(pipe, status, enable) \
+ ({ \
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
+ u16 status = (1 << usbhs_pipe_number(pipe)); \
+ if (!mod) \
+ return; \
+ if (enable) \
+ mod->irq_##status |= status; \
+ else \
+ mod->irq_##status &= ~status; \
+ usbhs_irq_callback_update(priv, mod); \
+ })
+
+static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
+{
+ /*
+ * And DCP pipe can NOT use "ready interrupt" for "send"
+ * it should use "empty" interrupt.
+ * see
+ * "Operation" - "Interrupt Function" - "BRDY Interrupt"
+ *
+ * on the other hand, normal pipe can use "ready interrupt" for "send"
+ * even though it is single/double buffer
+ */
+ if (usbhs_pipe_is_dcp(pipe))
+ usbhsf_irq_empty_ctrl(pipe, enable);
+ else
+ usbhsf_irq_ready_ctrl(pipe, enable);
+}
+
+static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
+{
+ usbhsf_irq_ready_ctrl(pipe, enable);
+}
+
+/*
+ * FIFO ctrl
+ */
+static void usbhsf_send_terminator(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+ usbhs_bset(priv, fifo->ctr, BVAL, BVAL);
+}
+
+static int usbhsf_fifo_barrier(struct usbhs_priv *priv,
+ struct usbhs_fifo *fifo)
+{
+ int timeout = 1024;
+
+ do {
+ /* The FIFO port is accessible */
+ if (usbhs_read(priv, fifo->ctr) & FRDY)
+ return 0;
+
+ udelay(10);
+ } while (timeout--);
+
+ return -EBUSY;
+}
+
+static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+ if (!usbhs_pipe_is_dcp(pipe))
+ usbhsf_fifo_barrier(priv, fifo);
+
+ usbhs_write(priv, fifo->ctr, BCLR);
+}
+
+static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv,
+ struct usbhs_fifo *fifo)
+{
+ return usbhs_read(priv, fifo->ctr) & DTLN_MASK;
+}
+
+static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+ usbhs_pipe_select_fifo(pipe, NULL);
+ usbhs_write(priv, fifo->sel, 0);
+}
+
+static int usbhsf_fifo_select(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo,
+ int write)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int timeout = 1024;
+ u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */
+ u16 base = usbhs_pipe_number(pipe); /* CURPIPE */
+
+ if (usbhs_pipe_is_busy(pipe) ||
+ usbhsf_fifo_is_busy(fifo))
+ return -EBUSY;
+
+ if (usbhs_pipe_is_dcp(pipe))
+ base |= (1 == write) << 5; /* ISEL */
+
+ /* "base" will be used below */
+ usbhs_write(priv, fifo->sel, base | MBW_32);
+
+ /* check ISEL and CURPIPE value */
+ while (timeout--) {
+ if (base == (mask & usbhs_read(priv, fifo->sel))) {
+ usbhs_pipe_select_fifo(pipe, fifo);
+ return 0;
+ }
+ udelay(10);
+ }
+
+ dev_err(dev, "fifo select error\n");
+
+ return -EIO;
+}
+
+/*
+ * PIO fifo functions
+ */
+static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
+ void __iomem *addr = priv->base + fifo->port;
+ u8 *buf;
+ int maxp = usbhs_pipe_get_maxpacket(pipe);
+ int total_len;
+ int i, ret, len;
+ int is_short;
+
+ ret = usbhsf_fifo_select(pipe, fifo, 1);
+ if (ret < 0)
+ return 0;
+
+ ret = usbhs_pipe_is_accessible(pipe);
+ if (ret < 0)
+ goto usbhs_fifo_write_busy;
+
+ ret = usbhsf_fifo_barrier(priv, fifo);
+ if (ret < 0)
+ goto usbhs_fifo_write_busy;
+
+ buf = pkt->buf + pkt->actual;
+ len = pkt->length - pkt->actual;
+ len = min(len, maxp);
+ total_len = len;
+ is_short = total_len < maxp;
+
+ /*
+ * FIXME
+ *
+ * 32-bit access only
+ */
+ if (len >= 4 && !((unsigned long)buf & 0x03)) {
+ iowrite32_rep(addr, buf, len / 4);
+ len %= 4;
+ buf += total_len - len;
+ }
+
+ /* the rest operation */
+ for (i = 0; i < len; i++)
+ iowrite8(buf[i], addr + (0x03 - (i & 0x03)));
+
+ /*
+ * variable update
+ */
+ pkt->actual += total_len;
+
+ if (pkt->actual < pkt->length)
+ *is_done = 0; /* there are remainder data */
+ else if (is_short)
+ *is_done = 1; /* short packet */
+ else
+ *is_done = !pkt->zero; /* send zero packet ? */
+
+ /*
+ * pipe/irq handling
+ */
+ if (is_short)
+ usbhsf_send_terminator(pipe, fifo);
+
+ usbhsf_tx_irq_ctrl(pipe, !*is_done);
+ usbhs_pipe_enable(pipe);
+
+ dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n",
+ usbhs_pipe_number(pipe),
+ pkt->length, pkt->actual, *is_done, pkt->zero);
+
+ /*
+ * Transmission end
+ */
+ if (*is_done) {
+ if (usbhs_pipe_is_dcp(pipe))
+ usbhs_dcp_control_transfer_done(pipe);
+ }
+
+ usbhsf_fifo_unselect(pipe, fifo);
+
+ return 0;
+
+usbhs_fifo_write_busy:
+ usbhsf_fifo_unselect(pipe, fifo);
+
+ /*
+ * pipe is busy.
+ * retry in interrupt
+ */
+ usbhsf_tx_irq_ctrl(pipe, 1);
+
+ return ret;
+}
+
+struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = {
+ .prepare = usbhsf_pio_try_push,
+ .try_run = usbhsf_pio_try_push,
+};
+
+static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+
+ if (usbhs_pipe_is_busy(pipe))
+ return 0;
+
+ /*
+ * pipe enable to prepare packet receive
+ */
+
+ usbhs_pipe_enable(pipe);
+ usbhsf_rx_irq_ctrl(pipe, 1);
+
+ return 0;
+}
+
+static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
+ void __iomem *addr = priv->base + fifo->port;
+ u8 *buf;
+ u32 data = 0;
+ int maxp = usbhs_pipe_get_maxpacket(pipe);
+ int rcv_len, len;
+ int i, ret;
+ int total_len = 0;
+
+ ret = usbhsf_fifo_select(pipe, fifo, 0);
+ if (ret < 0)
+ return 0;
+
+ ret = usbhsf_fifo_barrier(priv, fifo);
+ if (ret < 0)
+ goto usbhs_fifo_read_busy;
+
+ rcv_len = usbhsf_fifo_rcv_len(priv, fifo);
+
+ buf = pkt->buf + pkt->actual;
+ len = pkt->length - pkt->actual;
+ len = min(len, rcv_len);
+ total_len = len;
+
+ /*
+ * Buffer clear if Zero-Length packet
+ *
+ * see
+ * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function"
+ */
+ if (0 == rcv_len) {
+ usbhsf_fifo_clear(pipe, fifo);
+ goto usbhs_fifo_read_end;
+ }
+
+ /*
+ * FIXME
+ *
+ * 32-bit access only
+ */
+ if (len >= 4 && !((unsigned long)buf & 0x03)) {
+ ioread32_rep(addr, buf, len / 4);
+ len %= 4;
+ buf += total_len - len;
+ }
+
+ /* the rest operation */
+ for (i = 0; i < len; i++) {
+ if (!(i & 0x03))
+ data = ioread32(addr);
+
+ buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
+ }
+
+ pkt->actual += total_len;
+
+usbhs_fifo_read_end:
+ if ((pkt->actual == pkt->length) || /* receive all data */
+ (total_len < maxp)) { /* short packet */
+ *is_done = 1;
+ usbhsf_rx_irq_ctrl(pipe, 0);
+ usbhs_pipe_disable(pipe);
+ }
+
+ dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n",
+ usbhs_pipe_number(pipe),
+ pkt->length, pkt->actual, *is_done, pkt->zero);
+
+usbhs_fifo_read_busy:
+ usbhsf_fifo_unselect(pipe, fifo);
+
+ return ret;
+}
+
+struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler = {
+ .prepare = usbhsf_prepare_pop,
+ .try_run = usbhsf_pio_try_pop,
+};
+
+/*
+ * handler function
+ */
+static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt, int *is_done)
+{
+ usbhs_dcp_control_transfer_done(pkt->pipe);
+
+ *is_done = 1;
+
+ return 0;
+}
+
+struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = {
+ .prepare = usbhsf_ctrl_stage_end,
+ .try_run = usbhsf_ctrl_stage_end,
+};
+
+/*
+ * DMA fifo functions
+ */
+static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo,
+ struct usbhs_pkt *pkt)
+{
+ if (&usbhs_fifo_dma_push_handler == pkt->handler)
+ return fifo->tx_chan;
+
+ if (&usbhs_fifo_dma_pop_handler == pkt->handler)
+ return fifo->rx_chan;
+
+ return NULL;
+}
+
+static struct usbhs_fifo *usbhsf_get_dma_fifo(struct usbhs_priv *priv,
+ struct usbhs_pkt *pkt)
+{
+ struct usbhs_fifo *fifo;
+
+ /* DMA :: D0FIFO */
+ fifo = usbhsf_get_d0fifo(priv);
+ if (usbhsf_dma_chan_get(fifo, pkt) &&
+ !usbhsf_fifo_is_busy(fifo))
+ return fifo;
+
+ /* DMA :: D1FIFO */
+ fifo = usbhsf_get_d1fifo(priv);
+ if (usbhsf_dma_chan_get(fifo, pkt) &&
+ !usbhsf_fifo_is_busy(fifo))
+ return fifo;
+
+ return NULL;
+}
+
+#define usbhsf_dma_start(p, f) __usbhsf_dma_ctrl(p, f, DREQE)
+#define usbhsf_dma_stop(p, f) __usbhsf_dma_ctrl(p, f, 0)
+static void __usbhsf_dma_ctrl(struct usbhs_pipe *pipe,
+ struct usbhs_fifo *fifo,
+ u16 dreqe)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+ usbhs_bset(priv, fifo->sel, DREQE, dreqe);
+}
+
+#define usbhsf_dma_map(p) __usbhsf_dma_map_ctrl(p, 1)
+#define usbhsf_dma_unmap(p) __usbhsf_dma_map_ctrl(p, 0)
+static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+
+ return info->dma_map_ctrl(pkt, map);
+}
+
+static void usbhsf_dma_complete(void *arg);
+static void usbhsf_dma_prepare_tasklet(unsigned long data)
+{
+ struct usbhs_pkt *pkt = (struct usbhs_pkt *)data;
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct scatterlist sg;
+ struct dma_async_tx_descriptor *desc;
+ struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ enum dma_data_direction dir;
+ dma_cookie_t cookie;
+
+ dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, virt_to_page(pkt->dma),
+ pkt->length, offset_in_page(pkt->dma));
+ sg_dma_address(&sg) = pkt->dma + pkt->actual;
+ sg_dma_len(&sg) = pkt->trans;
+
+ desc = chan->device->device_prep_slave_sg(chan, &sg, 1, dir,
+ DMA_PREP_INTERRUPT |
+ DMA_CTRL_ACK);
+ if (!desc)
+ return;
+
+ desc->callback = usbhsf_dma_complete;
+ desc->callback_param = pipe;
+
+ cookie = desc->tx_submit(desc);
+ if (cookie < 0) {
+ dev_err(dev, "Failed to submit dma descriptor\n");
+ return;
+ }
+
+ dev_dbg(dev, " %s %d (%d/ %d)\n",
+ fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero);
+
+ usbhsf_dma_start(pipe, fifo);
+ dma_async_issue_pending(chan);
+}
+
+static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_fifo *fifo;
+ int len = pkt->length - pkt->actual;
+ int ret;
+
+ if (usbhs_pipe_is_busy(pipe))
+ return 0;
+
+ /* use PIO if packet is less than pio_dma_border or pipe is DCP */
+ if ((len < usbhs_get_dparam(priv, pio_dma_border)) ||
+ usbhs_pipe_is_dcp(pipe))
+ goto usbhsf_pio_prepare_push;
+
+ if (len % 4) /* 32bit alignment */
+ goto usbhsf_pio_prepare_push;
+
+ /* get enable DMA fifo */
+ fifo = usbhsf_get_dma_fifo(priv, pkt);
+ if (!fifo)
+ goto usbhsf_pio_prepare_push;
+
+ if (usbhsf_dma_map(pkt) < 0)
+ goto usbhsf_pio_prepare_push;
+
+ ret = usbhsf_fifo_select(pipe, fifo, 0);
+ if (ret < 0)
+ goto usbhsf_pio_prepare_push_unmap;
+
+ pkt->trans = len;
+
+ tasklet_init(&fifo->tasklet,
+ usbhsf_dma_prepare_tasklet,
+ (unsigned long)pkt);
+
+ tasklet_schedule(&fifo->tasklet);
+
+ return 0;
+
+usbhsf_pio_prepare_push_unmap:
+ usbhsf_dma_unmap(pkt);
+usbhsf_pio_prepare_push:
+ /*
+ * change handler to PIO
+ */
+ pkt->handler = &usbhs_fifo_pio_push_handler;
+
+ return pkt->handler->prepare(pkt, is_done);
+}
+
+static int usbhsf_dma_push_done(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+
+ pkt->actual = pkt->trans;
+
+ *is_done = !pkt->zero; /* send zero packet ? */
+
+ usbhsf_dma_stop(pipe, pipe->fifo);
+ usbhsf_dma_unmap(pkt);
+ usbhsf_fifo_unselect(pipe, pipe->fifo);
+
+ return 0;
+}
+
+struct usbhs_pkt_handle usbhs_fifo_dma_push_handler = {
+ .prepare = usbhsf_dma_prepare_push,
+ .dma_done = usbhsf_dma_push_done,
+};
+
+static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_fifo *fifo;
+ int len, ret;
+
+ if (usbhs_pipe_is_busy(pipe))
+ return 0;
+
+ if (usbhs_pipe_is_dcp(pipe))
+ goto usbhsf_pio_prepare_pop;
+
+ /* get enable DMA fifo */
+ fifo = usbhsf_get_dma_fifo(priv, pkt);
+ if (!fifo)
+ goto usbhsf_pio_prepare_pop;
+
+ ret = usbhsf_fifo_select(pipe, fifo, 0);
+ if (ret < 0)
+ goto usbhsf_pio_prepare_pop;
+
+ /* use PIO if packet is less than pio_dma_border */
+ len = usbhsf_fifo_rcv_len(priv, fifo);
+ len = min(pkt->length - pkt->actual, len);
+ if (len % 4) /* 32bit alignment */
+ goto usbhsf_pio_prepare_pop_unselect;
+
+ if (len < usbhs_get_dparam(priv, pio_dma_border))
+ goto usbhsf_pio_prepare_pop_unselect;
+
+ ret = usbhsf_fifo_barrier(priv, fifo);
+ if (ret < 0)
+ goto usbhsf_pio_prepare_pop_unselect;
+
+ if (usbhsf_dma_map(pkt) < 0)
+ goto usbhsf_pio_prepare_pop_unselect;
+
+ /* DMA */
+
+ /*
+ * usbhs_fifo_dma_pop_handler :: prepare
+ * enabled irq to come here.
+ * but it is no longer needed for DMA. disable it.
+ */
+ usbhsf_rx_irq_ctrl(pipe, 0);
+
+ pkt->trans = len;
+
+ tasklet_init(&fifo->tasklet,
+ usbhsf_dma_prepare_tasklet,
+ (unsigned long)pkt);
+
+ tasklet_schedule(&fifo->tasklet);
+
+ return 0;
+
+usbhsf_pio_prepare_pop_unselect:
+ usbhsf_fifo_unselect(pipe, fifo);
+usbhsf_pio_prepare_pop:
+
+ /*
+ * change handler to PIO
+ */
+ pkt->handler = &usbhs_fifo_pio_pop_handler;
+
+ return pkt->handler->try_run(pkt, is_done);
+}
+
+static int usbhsf_dma_pop_done(struct usbhs_pkt *pkt, int *is_done)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ int maxp = usbhs_pipe_get_maxpacket(pipe);
+
+ usbhsf_dma_stop(pipe, pipe->fifo);
+ usbhsf_dma_unmap(pkt);
+ usbhsf_fifo_unselect(pipe, pipe->fifo);
+
+ pkt->actual += pkt->trans;
+
+ if ((pkt->actual == pkt->length) || /* receive all data */
+ (pkt->trans < maxp)) { /* short packet */
+ *is_done = 1;
+ } else {
+ /* re-enable */
+ usbhsf_prepare_pop(pkt, is_done);
+ }
+
+ return 0;
+}
+
+struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler = {
+ .prepare = usbhsf_prepare_pop,
+ .try_run = usbhsf_dma_try_pop,
+ .dma_done = usbhsf_dma_pop_done
+};
+
+/*
+ * DMA setting
+ */
+static bool usbhsf_dma_filter(struct dma_chan *chan, void *param)
+{
+ struct sh_dmae_slave *slave = param;
+
+ /*
+ * FIXME
+ *
+ * usbhs doesn't recognize id = 0 as valid DMA
+ */
+ if (0 == slave->slave_id)
+ return false;
+
+ chan->private = slave;
+
+ return true;
+}
+
+static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo)
+{
+ if (fifo->tx_chan)
+ dma_release_channel(fifo->tx_chan);
+ if (fifo->rx_chan)
+ dma_release_channel(fifo->rx_chan);
+
+ fifo->tx_chan = NULL;
+ fifo->rx_chan = NULL;
+}
+
+static void usbhsf_dma_init(struct usbhs_priv *priv,
+ struct usbhs_fifo *fifo)
+{
+ struct device *dev = usbhs_priv_to_dev(priv);
+ dma_cap_mask_t mask;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+ fifo->tx_chan = dma_request_channel(mask, usbhsf_dma_filter,
+ &fifo->tx_slave);
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+ fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter,
+ &fifo->rx_slave);
+
+ if (fifo->tx_chan || fifo->rx_chan)
+ dev_info(dev, "enable DMAEngine (%s%s%s)\n",
+ fifo->name,
+ fifo->tx_chan ? "[TX]" : " ",
+ fifo->rx_chan ? "[RX]" : " ");
+}
+
+/*
+ * irq functions
+ */
+static int usbhsf_irq_empty(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->bempsts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->bempsts & (1 << i)))
+ continue;
+
+ ret = usbhs_pkt_run(pipe);
+ if (ret < 0)
+ dev_err(dev, "irq_empty run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+static int usbhsf_irq_ready(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->brdysts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->brdysts & (1 << i)))
+ continue;
+
+ ret = usbhs_pkt_run(pipe);
+ if (ret < 0)
+ dev_err(dev, "irq_ready run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+static void usbhsf_dma_complete(void *arg)
+{
+ struct usbhs_pipe *pipe = arg;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int ret;
+
+ ret = usbhs_pkt_dmadone(pipe);
+ if (ret < 0)
+ dev_err(dev, "dma_complete run_error %d : %d\n",
+ usbhs_pipe_number(pipe), ret);
+}
+
+/*
+ * fifo init
+ */
+void usbhs_fifo_init(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+ struct usbhs_fifo *cfifo = usbhsf_get_cfifo(priv);
+ struct usbhs_fifo *d0fifo = usbhsf_get_d0fifo(priv);
+ struct usbhs_fifo *d1fifo = usbhsf_get_d1fifo(priv);
+
+ mod->irq_empty = usbhsf_irq_empty;
+ mod->irq_ready = usbhsf_irq_ready;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+
+ cfifo->pipe = NULL;
+ cfifo->tx_chan = NULL;
+ cfifo->rx_chan = NULL;
+
+ d0fifo->pipe = NULL;
+ d0fifo->tx_chan = NULL;
+ d0fifo->rx_chan = NULL;
+
+ d1fifo->pipe = NULL;
+ d1fifo->tx_chan = NULL;
+ d1fifo->rx_chan = NULL;
+
+ usbhsf_dma_init(priv, usbhsf_get_d0fifo(priv));
+ usbhsf_dma_init(priv, usbhsf_get_d1fifo(priv));
+}
+
+void usbhs_fifo_quit(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+ mod->irq_empty = NULL;
+ mod->irq_ready = NULL;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+
+ usbhsf_dma_quit(priv, usbhsf_get_d0fifo(priv));
+ usbhsf_dma_quit(priv, usbhsf_get_d1fifo(priv));
+}
+
+int usbhs_fifo_probe(struct usbhs_priv *priv)
+{
+ struct usbhs_fifo *fifo;
+
+ /* CFIFO */
+ fifo = usbhsf_get_cfifo(priv);
+ fifo->name = "CFIFO";
+ fifo->port = CFIFO;
+ fifo->sel = CFIFOSEL;
+ fifo->ctr = CFIFOCTR;
+
+ /* D0FIFO */
+ fifo = usbhsf_get_d0fifo(priv);
+ fifo->name = "D0FIFO";
+ fifo->port = D0FIFO;
+ fifo->sel = D0FIFOSEL;
+ fifo->ctr = D0FIFOCTR;
+ fifo->tx_slave.slave_id = usbhs_get_dparam(priv, d0_tx_id);
+ fifo->rx_slave.slave_id = usbhs_get_dparam(priv, d0_rx_id);
+
+ /* D1FIFO */
+ fifo = usbhsf_get_d1fifo(priv);
+ fifo->name = "D1FIFO";
+ fifo->port = D1FIFO;
+ fifo->sel = D1FIFOSEL;
+ fifo->ctr = D1FIFOCTR;
+ fifo->tx_slave.slave_id = usbhs_get_dparam(priv, d1_tx_id);
+ fifo->rx_slave.slave_id = usbhs_get_dparam(priv, d1_rx_id);
+
+ return 0;
+}
+
+void usbhs_fifo_remove(struct usbhs_priv *priv)
+{
+}
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
new file mode 100644
index 000000000000..ed6d8e56c13c
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -0,0 +1,104 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+#ifndef RENESAS_USB_FIFO_H
+#define RENESAS_USB_FIFO_H
+
+#include <linux/interrupt.h>
+#include <linux/sh_dma.h>
+#include <asm/dma.h>
+#include "pipe.h"
+
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+
+struct usbhs_fifo {
+ char *name;
+ u32 port; /* xFIFO */
+ u32 sel; /* xFIFOSEL */
+ u32 ctr; /* xFIFOCTR */
+
+ struct usbhs_pipe *pipe;
+ struct tasklet_struct tasklet;
+
+ struct dma_chan *tx_chan;
+ struct dma_chan *rx_chan;
+
+ struct sh_dmae_slave tx_slave;
+ struct sh_dmae_slave rx_slave;
+};
+
+struct usbhs_fifo_info {
+ struct usbhs_fifo cfifo;
+ struct usbhs_fifo d0fifo;
+ struct usbhs_fifo d1fifo;
+};
+
+struct usbhs_pkt_handle;
+struct usbhs_pkt {
+ struct list_head node;
+ struct usbhs_pipe *pipe;
+ struct usbhs_pkt_handle *handler;
+ dma_addr_t dma;
+ void *buf;
+ int length;
+ int trans;
+ int actual;
+ int zero;
+};
+
+struct usbhs_pkt_handle {
+ int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
+ int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
+ int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
+};
+
+/*
+ * fifo
+ */
+int usbhs_fifo_probe(struct usbhs_priv *priv);
+void usbhs_fifo_remove(struct usbhs_priv *priv);
+void usbhs_fifo_init(struct usbhs_priv *priv);
+void usbhs_fifo_quit(struct usbhs_priv *priv);
+
+/*
+ * packet info
+ */
+enum {
+ USBHSF_PKT_PREPARE,
+ USBHSF_PKT_TRY_RUN,
+ USBHSF_PKT_DMA_DONE,
+};
+
+extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
+extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
+extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
+
+extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
+extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
+
+
+void usbhs_pkt_init(struct usbhs_pkt *pkt);
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+ struct usbhs_pkt_handle *handler,
+ void *buf, int len, int zero);
+struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
+int __usbhs_pkt_handler(struct usbhs_pipe *pipe, int type);
+
+#define usbhs_pkt_start(p) __usbhs_pkt_handler(p, USBHSF_PKT_PREPARE)
+#define usbhs_pkt_run(p) __usbhs_pkt_handler(p, USBHSF_PKT_TRY_RUN)
+#define usbhs_pkt_dmadone(p) __usbhs_pkt_handler(p, USBHSF_PKT_DMA_DONE)
+
+#endif /* RENESAS_USB_FIFO_H */
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 547486ccd059..46e247ad14f3 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -26,21 +26,19 @@
*/
struct usbhsg_request {
struct usb_request req;
- struct list_head node;
+ struct usbhs_pkt pkt;
};
#define EP_NAME_SIZE 8
struct usbhsg_gpriv;
-struct usbhsg_pipe_handle;
struct usbhsg_uep {
struct usb_ep ep;
struct usbhs_pipe *pipe;
- struct list_head list;
char ep_name[EP_NAME_SIZE];
struct usbhsg_gpriv *gpriv;
- struct usbhsg_pipe_handle *handler;
+ struct usbhs_pkt_handle *handler;
};
struct usbhsg_gpriv {
@@ -58,12 +56,6 @@ struct usbhsg_gpriv {
#define USBHSG_STATUS_WEDGE (1 << 2)
};
-struct usbhsg_pipe_handle {
- int (*prepare)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
- int (*try_run)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
- void (*irq_mask)(struct usbhsg_uep *uep, int enable);
-};
-
struct usbhsg_recip_handle {
char *name;
int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
@@ -100,7 +92,6 @@ struct usbhsg_recip_handle {
container_of(r, struct usbhsg_request, req)
#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
-#define usbhsg_gpriv_to_lock(gp) usbhs_priv_to_lock((gp)->mod.priv)
#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
@@ -110,6 +101,10 @@ struct usbhsg_recip_handle {
#define usbhsg_pipe_to_uep(p) ((p)->mod_private)
#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
+#define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
+#define usbhsg_pkt_to_ureq(i) \
+ container_of(i, struct usbhsg_request, pkt)
+
#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
/* status */
@@ -119,35 +114,6 @@ struct usbhsg_recip_handle {
#define usbhsg_status_has(gp, b) (gp->status & b)
/*
- * usbhsg_trylock
- *
- * This driver don't use spin_try_lock
- * to avoid warning of CONFIG_DEBUG_SPINLOCK
- */
-static spinlock_t *usbhsg_trylock(struct usbhsg_gpriv *gpriv,
- unsigned long *flags)
-{
- spinlock_t *lock = usbhsg_gpriv_to_lock(gpriv);
-
- /* check spin lock status
- * to avoid deadlock/nest */
- if (spin_is_locked(lock))
- return NULL;
-
- spin_lock_irqsave(lock, *flags);
-
- return lock;
-}
-
-static void usbhsg_unlock(spinlock_t *lock, unsigned long *flags)
-{
- if (!lock)
- return;
-
- spin_unlock_irqrestore(lock, *flags);
-}
-
-/*
* list push/pop
*/
static void usbhsg_queue_push(struct usbhsg_uep *uep,
@@ -156,79 +122,17 @@ static void usbhsg_queue_push(struct usbhsg_uep *uep,
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+ struct usb_request *req = &ureq->req;
- /*
- ********* assume under spin lock *********
- */
- list_del_init(&ureq->node);
- list_add_tail(&ureq->node, &uep->list);
- ureq->req.actual = 0;
- ureq->req.status = -EINPROGRESS;
+ req->actual = 0;
+ req->status = -EINPROGRESS;
+ usbhs_pkt_push(pipe, pkt, uep->handler,
+ req->buf, req->length, req->zero);
dev_dbg(dev, "pipe %d : queue push (%d)\n",
usbhs_pipe_number(pipe),
- ureq->req.length);
-}
-
-static struct usbhsg_request *usbhsg_queue_get(struct usbhsg_uep *uep)
-{
- /*
- ********* assume under spin lock *********
- */
- if (list_empty(&uep->list))
- return NULL;
-
- return list_entry(uep->list.next, struct usbhsg_request, node);
-}
-
-#define usbhsg_queue_prepare(uep) __usbhsg_queue_handler(uep, 1);
-#define usbhsg_queue_handle(uep) __usbhsg_queue_handler(uep, 0);
-static int __usbhsg_queue_handler(struct usbhsg_uep *uep, int prepare)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- struct usbhsg_request *ureq;
- spinlock_t *lock;
- unsigned long flags;
- int ret = 0;
-
- if (!uep->handler) {
- dev_err(dev, "no handler function\n");
- return -EIO;
- }
-
- /*
- * CAUTION [*queue handler*]
- *
- * This function will be called for start/restart queue operation.
- * OTOH the most much worry for USB driver is spinlock nest.
- * Specially it are
- * - usb_ep_ops :: queue
- * - usb_request :: complete
- *
- * But the caller of this function need not care about spinlock.
- * This function is using usbhsg_trylock for it.
- * if "is_locked" is 1, this mean this function lock it.
- * but if it is 0, this mean it is already under spin lock.
- * see also
- * CAUTION [*endpoint queue*]
- * CAUTION [*request complete*]
- */
-
- /****************** spin try lock *******************/
- lock = usbhsg_trylock(gpriv, &flags);
-
- ureq = usbhsg_queue_get(uep);
- if (ureq) {
- if (prepare)
- ret = uep->handler->prepare(uep, ureq);
- else
- ret = uep->handler->try_run(uep, ureq);
- }
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ******************/
-
- return ret;
+ req->length);
}
static void usbhsg_queue_pop(struct usbhsg_uep *uep,
@@ -239,289 +143,88 @@ static void usbhsg_queue_pop(struct usbhsg_uep *uep,
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- /*
- ********* assume under spin lock *********
- */
-
- /*
- * CAUTION [*request complete*]
- *
- * There is a possibility not to be called in correct order
- * if "complete" is called without spinlock.
- *
- * So, this function assume it is under spinlock,
- * and call usb_request :: complete.
- *
- * But this "complete" will push next usb_request.
- * It mean "usb_ep_ops :: queue" which is using spinlock is called
- * under spinlock.
- *
- * To avoid dead-lock, this driver is using usbhsg_trylock.
- * CAUTION [*endpoint queue*]
- * CAUTION [*queue handler*]
- */
-
dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
- list_del_init(&ureq->node);
-
ureq->req.status = status;
ureq->req.complete(&uep->ep, &ureq->req);
-
- /* more request ? */
- if (0 == status)
- usbhsg_queue_prepare(uep);
}
-/*
- * irq enable/disable function
- */
-#define usbhsg_irq_callback_ctrl(uep, status, enable) \
- ({ \
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); \
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); \
- struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); \
- struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
- if (!mod) \
- return; \
- if (enable) \
- mod->irq_##status |= (1 << usbhs_pipe_number(pipe)); \
- else \
- mod->irq_##status &= ~(1 << usbhs_pipe_number(pipe)); \
- usbhs_irq_callback_update(priv, mod); \
- })
-
-static void usbhsg_irq_empty_ctrl(struct usbhsg_uep *uep, int enable)
+static void usbhsg_queue_done(struct usbhs_pkt *pkt)
{
- usbhsg_irq_callback_ctrl(uep, bempsts, enable);
-}
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+ struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
-static void usbhsg_irq_ready_ctrl(struct usbhsg_uep *uep, int enable)
-{
- usbhsg_irq_callback_ctrl(uep, brdysts, enable);
-}
+ ureq->req.actual = pkt->actual;
-/*
- * handler function
- */
-static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
- /*
- ********* assume under spin lock *********
- */
-
- usbhs_dcp_control_transfer_done(pipe);
usbhsg_queue_pop(uep, ureq, 0);
-
- return 0;
}
-static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
+static int usbhsg_dma_map(struct device *dev,
+ struct usbhs_pkt *pkt,
+ enum dma_data_direction dir)
{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
struct usb_request *req = &ureq->req;
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- void *buf;
- int remainder, send;
- int is_done = 0;
- int enable;
- int maxp;
-
- /*
- ********* assume under spin lock *********
- */
-
- maxp = usbhs_pipe_get_maxpacket(pipe);
- buf = req->buf + req->actual;
- remainder = req->length - req->actual;
-
- send = usbhs_fifo_write(pipe, buf, remainder);
-
- /*
- * send < 0 : pipe busy
- * send = 0 : send zero packet
- * send > 0 : send data
- *
- * send <= max_packet
- */
- if (send > 0)
- req->actual += send;
-
- /* send all packet ? */
- if (send < remainder)
- is_done = 0; /* there are remainder data */
- else if (send < maxp)
- is_done = 1; /* short packet */
- else
- is_done = !req->zero; /* send zero packet ? */
-
- dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n",
- usbhs_pipe_number(pipe),
- remainder, send, is_done, req->zero);
- /*
- * enable interrupt and send again in irq handler
- * if it still have remainder data which should be sent.
- */
- enable = !is_done;
- uep->handler->irq_mask(uep, enable);
-
- /*
- * usbhs_fifo_enable execute
- * - after callback_update,
- * - before queue_pop / stage_end
- */
- usbhs_fifo_enable(pipe);
-
- /*
- * all data were sent ?
- */
- if (is_done) {
- /* it care below call in
- "function mode" */
- if (usbhsg_is_dcp(uep))
- usbhs_dcp_control_transfer_done(pipe);
-
- usbhsg_queue_pop(uep, ureq, 0);
+ if (pkt->dma != DMA_ADDR_INVALID) {
+ dev_err(dev, "dma is already mapped\n");
+ return -EIO;
}
- return 0;
-}
-
-static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
- /*
- ********* assume under spin lock *********
- */
+ if (req->dma == DMA_ADDR_INVALID) {
+ pkt->dma = dma_map_single(dev, pkt->buf, pkt->length, dir);
+ } else {
+ dma_sync_single_for_device(dev, req->dma, req->length, dir);
+ pkt->dma = req->dma;
+ }
- usbhs_fifo_prepare_write(pipe);
- usbhsg_try_run_send_packet(uep, ureq);
+ if (dma_mapping_error(dev, pkt->dma)) {
+ dev_err(dev, "dma mapping error %x\n", pkt->dma);
+ return -EIO;
+ }
return 0;
}
-static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
+static int usbhsg_dma_unmap(struct device *dev,
+ struct usbhs_pkt *pkt,
+ enum dma_data_direction dir)
{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
struct usb_request *req = &ureq->req;
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- void *buf;
- int maxp;
- int remainder, recv;
- int is_done = 0;
-
- /*
- ********* assume under spin lock *********
- */
-
- maxp = usbhs_pipe_get_maxpacket(pipe);
- buf = req->buf + req->actual;
- remainder = req->length - req->actual;
-
- recv = usbhs_fifo_read(pipe, buf, remainder);
- /*
- * recv < 0 : pipe busy
- * recv >= 0 : receive data
- *
- * recv <= max_packet
- */
- if (recv < 0)
- return -EBUSY;
- /* update parameters */
- req->actual += recv;
-
- if ((recv == remainder) || /* receive all data */
- (recv < maxp)) /* short packet */
- is_done = 1;
-
- dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n",
- usbhs_pipe_number(pipe),
- remainder, recv, is_done, req->zero);
+ if (pkt->dma == DMA_ADDR_INVALID) {
+ dev_err(dev, "dma is not mapped\n");
+ return -EIO;
+ }
- /* read all data ? */
- if (is_done) {
- int disable = 0;
+ if (req->dma == DMA_ADDR_INVALID)
+ dma_unmap_single(dev, pkt->dma, pkt->length, dir);
+ else
+ dma_sync_single_for_cpu(dev, req->dma, req->length, dir);
- uep->handler->irq_mask(uep, disable);
- usbhs_fifo_disable(pipe);
- usbhsg_queue_pop(uep, ureq, 0);
- }
+ pkt->dma = DMA_ADDR_INVALID;
return 0;
}
-static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
+static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
- int enable = 1;
- int ret;
-
- /*
- ********* assume under spin lock *********
- */
-
- ret = usbhs_fifo_prepare_read(pipe);
- if (ret < 0)
- return ret;
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ enum dma_data_direction dir;
- /*
- * data will be read in interrupt handler
- */
- uep->handler->irq_mask(uep, enable);
+ dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
- return ret;
+ if (map)
+ return usbhsg_dma_map(dev, pkt, dir);
+ else
+ return usbhsg_dma_unmap(dev, pkt, dir);
}
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_empty = {
- .prepare = usbhsg_prepare_send_packet,
- .try_run = usbhsg_try_run_send_packet,
- .irq_mask = usbhsg_irq_empty_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_ready = {
- .prepare = usbhsg_prepare_send_packet,
- .try_run = usbhsg_try_run_send_packet,
- .irq_mask = usbhsg_irq_ready_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_recv_by_ready = {
- .prepare = usbhsg_prepare_receive_packet,
- .try_run = usbhsg_try_run_receive_packet,
- .irq_mask = usbhsg_irq_ready_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_ctrl_stage_end = {
- .prepare = usbhsg_try_run_ctrl_stage_end,
- .try_run = usbhsg_try_run_ctrl_stage_end,
-};
-
-/*
- * DCP pipe can NOT use "ready interrupt" for "send"
- * it should use "empty" interrupt.
- * see
- * "Operation" - "Interrupt Function" - "BRDY Interrupt"
- *
- * on the other hand, normal pipe can use "ready interrupt" for "send"
- * even though it is single/double buffer
- */
-#define usbhsg_handler_send_ctrl usbhsg_handler_send_by_empty
-#define usbhsg_handler_recv_ctrl usbhsg_handler_recv_by_ready
-
-#define usbhsg_handler_send_packet usbhsg_handler_send_by_ready
-#define usbhsg_handler_recv_packet usbhsg_handler_recv_by_ready
-
/*
* USB_TYPE_STANDARD / clear feature functions
*/
@@ -546,15 +249,13 @@ static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
- usbhs_fifo_disable(pipe);
+ usbhs_pipe_disable(pipe);
usbhs_pipe_clear_sequence(pipe);
- usbhs_fifo_enable(pipe);
+ usbhs_pipe_enable(pipe);
}
usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
- usbhsg_queue_prepare(uep);
-
return 0;
}
@@ -575,6 +276,7 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
struct usbhsg_uep *uep;
+ struct usbhs_pipe *pipe;
int recip = ctrl->bRequestType & USB_RECIP_MASK;
int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
int ret;
@@ -583,9 +285,11 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
char *msg;
uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
- if (!usbhsg_uep_to_pipe(uep)) {
+ pipe = usbhsg_uep_to_pipe(uep);
+ if (!pipe) {
dev_err(dev, "wrong recip request\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto usbhsg_recip_run_handle_end;
}
switch (recip) {
@@ -608,10 +312,20 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
}
if (func) {
+ unsigned long flags;
+
dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
ret = func(priv, uep, ctrl);
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
}
+usbhsg_recip_run_handle_end:
+ usbhs_pkt_start(pipe);
+
return ret;
}
@@ -660,13 +374,13 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
switch (stage) {
case READ_DATA_STAGE:
- dcp->handler = &usbhsg_handler_send_ctrl;
+ dcp->handler = &usbhs_fifo_pio_push_handler;
break;
case WRITE_DATA_STAGE:
- dcp->handler = &usbhsg_handler_recv_ctrl;
+ dcp->handler = &usbhs_fifo_pio_pop_handler;
break;
case NODATA_STATUS_STAGE:
- dcp->handler = &usbhsg_handler_ctrl_stage_end;
+ dcp->handler = &usbhs_ctrl_stage_end_handler;
break;
default:
return ret;
@@ -695,128 +409,27 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
if (ret < 0)
- usbhs_fifo_stall(pipe);
+ usbhs_pipe_stall(pipe);
return ret;
}
-static int usbhsg_irq_empty(struct usbhs_priv *priv,
- struct usbhs_irq_state *irq_state)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
- struct usbhsg_uep *uep;
- struct usbhs_pipe *pipe;
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- int i, ret;
-
- if (!irq_state->bempsts) {
- dev_err(dev, "debug %s !!\n", __func__);
- return -EIO;
- }
-
- dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
-
- /*
- * search interrupted "pipe"
- * not "uep".
- */
- usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
- if (!(irq_state->bempsts & (1 << i)))
- continue;
-
- uep = usbhsg_pipe_to_uep(pipe);
- ret = usbhsg_queue_handle(uep);
- if (ret < 0)
- dev_err(dev, "send error %d : %d\n", i, ret);
- }
-
- return 0;
-}
-
-static int usbhsg_irq_ready(struct usbhs_priv *priv,
- struct usbhs_irq_state *irq_state)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
- struct usbhsg_uep *uep;
- struct usbhs_pipe *pipe;
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- int i, ret;
-
- if (!irq_state->brdysts) {
- dev_err(dev, "debug %s !!\n", __func__);
- return -EIO;
- }
-
- dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
-
- /*
- * search interrupted "pipe"
- * not "uep".
- */
- usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
- if (!(irq_state->brdysts & (1 << i)))
- continue;
-
- uep = usbhsg_pipe_to_uep(pipe);
- ret = usbhsg_queue_handle(uep);
- if (ret < 0)
- dev_err(dev, "receive error %d : %d\n", i, ret);
- }
-
- return 0;
-}
-
/*
*
* usb_dcp_ops
*
*/
-static int usbhsg_dcp_enable(struct usbhsg_uep *uep)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
- struct usbhs_pipe *pipe;
-
- /*
- ********* assume under spin lock *********
- */
-
- pipe = usbhs_dcp_malloc(priv);
- if (!pipe)
- return -EIO;
-
- uep->pipe = pipe;
- uep->pipe->mod_private = uep;
- INIT_LIST_HEAD(&uep->list);
-
- return 0;
-}
-
-#define usbhsg_dcp_disable usbhsg_pipe_disable
static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
{
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
- struct usbhsg_request *ureq;
- int disable = 0;
-
- /*
- ********* assume under spin lock *********
- */
-
- usbhs_fifo_disable(pipe);
+ struct usbhs_pkt *pkt;
- /*
- * disable pipe irq
- */
- usbhsg_irq_empty_ctrl(uep, disable);
- usbhsg_irq_ready_ctrl(uep, disable);
+ usbhs_pipe_disable(pipe);
while (1) {
- ureq = usbhsg_queue_get(uep);
- if (!ureq)
+ pkt = usbhs_pkt_pop(pipe, NULL);
+ if (!pkt)
break;
-
- usbhsg_queue_pop(uep, ureq, -ECONNRESET);
}
return 0;
@@ -843,8 +456,6 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
struct usbhs_pipe *pipe;
- spinlock_t *lock;
- unsigned long flags;
int ret = -EIO;
/*
@@ -854,46 +465,27 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
if (uep->pipe)
return 0;
- /******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
-
pipe = usbhs_pipe_malloc(priv, desc);
if (pipe) {
uep->pipe = pipe;
pipe->mod_private = uep;
- INIT_LIST_HEAD(&uep->list);
if (usb_endpoint_dir_in(desc))
- uep->handler = &usbhsg_handler_send_packet;
+ uep->handler = &usbhs_fifo_pio_push_handler;
else
- uep->handler = &usbhsg_handler_recv_packet;
+ uep->handler = &usbhs_fifo_pio_pop_handler;
ret = 0;
}
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ******************/
-
return ret;
}
static int usbhsg_ep_disable(struct usb_ep *ep)
{
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- spinlock_t *lock;
- unsigned long flags;
- int ret;
- /******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
-
- ret = usbhsg_pipe_disable(uep);
-
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ******************/
-
- return ret;
+ return usbhsg_pipe_disable(uep);
}
static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
@@ -905,7 +497,10 @@ static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
if (!ureq)
return NULL;
- INIT_LIST_HEAD(&ureq->node);
+ usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
+
+ ureq->req.dma = DMA_ADDR_INVALID;
+
return &ureq->req;
}
@@ -914,7 +509,7 @@ static void usbhsg_ep_free_request(struct usb_ep *ep,
{
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
- WARN_ON(!list_empty(&ureq->node));
+ WARN_ON(!list_empty(&ureq->pkt.node));
kfree(ureq);
}
@@ -925,69 +520,27 @@ static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
- spinlock_t *lock;
- unsigned long flags;
- int ret = 0;
-
- /*
- * CAUTION [*endpoint queue*]
- *
- * This function will be called from usb_request :: complete
- * or usb driver timing.
- * If this function is called from usb_request :: complete,
- * it is already under spinlock on this driver.
- * but it is called frm usb driver, this function should call spinlock.
- *
- * This function is using usbshg_trylock to solve this issue.
- * if "is_locked" is 1, this mean this function lock it.
- * but if it is 0, this mean it is already under spin lock.
- * see also
- * CAUTION [*queue handler*]
- * CAUTION [*request complete*]
- */
-
- /******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
/* param check */
if (usbhsg_is_not_connected(gpriv) ||
unlikely(!gpriv->driver) ||
unlikely(!pipe))
- ret = -ESHUTDOWN;
- else
- usbhsg_queue_push(uep, ureq);
-
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ******************/
+ return -ESHUTDOWN;
- usbhsg_queue_prepare(uep);
+ usbhsg_queue_push(uep, ureq);
- return ret;
+ return 0;
}
static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
{
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- spinlock_t *lock;
- unsigned long flags;
-
- /*
- * see
- * CAUTION [*queue handler*]
- * CAUTION [*endpoint queue*]
- * CAUTION [*request complete*]
- */
-
- /******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
usbhsg_queue_pop(uep, ureq, -ECONNRESET);
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ******************/
-
return 0;
}
@@ -996,42 +549,32 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- spinlock_t *lock;
unsigned long flags;
- int ret = -EAGAIN;
- /*
- * see
- * CAUTION [*queue handler*]
- * CAUTION [*endpoint queue*]
- * CAUTION [*request complete*]
- */
+ usbhsg_pipe_disable(uep);
- /******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
- if (!usbhsg_queue_get(uep)) {
-
- dev_dbg(dev, "set halt %d (pipe %d)\n",
- halt, usbhs_pipe_number(pipe));
+ dev_dbg(dev, "set halt %d (pipe %d)\n",
+ halt, usbhs_pipe_number(pipe));
- if (halt)
- usbhs_fifo_stall(pipe);
- else
- usbhs_fifo_disable(pipe);
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
- if (halt && wedge)
- usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
- else
- usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
+ if (halt)
+ usbhs_pipe_stall(pipe);
+ else
+ usbhs_pipe_disable(pipe);
- ret = 0;
- }
+ if (halt && wedge)
+ usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
+ else
+ usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
- usbhsg_unlock(lock, &flags);
+ usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
- return ret;
+ return 0;
}
static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
@@ -1067,28 +610,40 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
struct device *dev = usbhs_priv_to_dev(priv);
- spinlock_t *lock;
unsigned long flags;
+ int ret = 0;
/******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
+ usbhs_lock(priv, flags);
- /*
- * enable interrupt and systems if ready
- */
usbhsg_status_set(gpriv, status);
if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
- goto usbhsg_try_start_unlock;
+ ret = -1; /* not ready */
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ********************/
+
+ if (ret < 0)
+ return 0; /* not ready is not error */
+ /*
+ * enable interrupt and systems if ready
+ */
dev_dbg(dev, "start gadget\n");
/*
* pipe initialize and enable DCP
*/
- usbhs_pipe_init(priv);
+ usbhs_pipe_init(priv,
+ usbhsg_queue_done,
+ usbhsg_dma_map_ctrl);
+ usbhs_fifo_init(priv);
usbhsg_uep_init(gpriv);
- usbhsg_dcp_enable(dcp);
+
+ /* dcp init */
+ dcp->pipe = usbhs_dcp_malloc(priv);
+ dcp->pipe->mod_private = dcp;
/*
* system config enble
@@ -1105,16 +660,8 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
*/
mod->irq_dev_state = usbhsg_irq_dev_state;
mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
- mod->irq_empty = usbhsg_irq_empty;
- mod->irq_ready = usbhsg_irq_ready;
- mod->irq_bempsts = 0;
- mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
-usbhsg_try_start_unlock:
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ********************/
-
return 0;
}
@@ -1124,31 +671,33 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
struct device *dev = usbhs_priv_to_dev(priv);
- spinlock_t *lock;
unsigned long flags;
+ int ret = 0;
/******************** spin lock ********************/
- lock = usbhsg_trylock(gpriv, &flags);
+ usbhs_lock(priv, flags);
- /*
- * disable interrupt and systems if 1st try
- */
usbhsg_status_clr(gpriv, status);
if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
!usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
- goto usbhsg_try_stop_unlock;
+ ret = -1; /* already done */
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ********************/
+
+ if (ret < 0)
+ return 0; /* already done is not error */
+
+ /*
+ * disable interrupt and systems if 1st try
+ */
+ usbhs_fifo_quit(priv);
/* disable all irq */
mod->irq_dev_state = NULL;
mod->irq_ctrl_stage = NULL;
- mod->irq_empty = NULL;
- mod->irq_ready = NULL;
- mod->irq_bempsts = 0;
- mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
- usbhsg_dcp_disable(dcp);
-
gpriv->gadget.speed = USB_SPEED_UNKNOWN;
/* disable sys */
@@ -1156,8 +705,7 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
usbhs_sys_function_ctrl(priv, 0);
usbhs_sys_usb_ctrl(priv, 0);
- usbhsg_unlock(lock, &flags);
- /******************** spin unlock ********************/
+ usbhsg_pipe_disable(dcp);
if (gpriv->driver &&
gpriv->driver->disconnect)
@@ -1166,11 +714,6 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
dev_dbg(dev, "stop gadget\n");
return 0;
-
-usbhsg_try_stop_unlock:
- usbhsg_unlock(lock, &flags);
-
- return 0;
}
/*
@@ -1350,7 +893,6 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
uep->ep.name = uep->ep_name;
uep->ep.ops = &usbhsg_ep_ops;
INIT_LIST_HEAD(&uep->ep.ep_list);
- INIT_LIST_HEAD(&uep->list);
/* init DCP */
if (usbhsg_is_dcp(uep)) {
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index bc4521c54261..d0ae846632cd 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -15,7 +15,6 @@
*
*/
#include <linux/delay.h>
-#include <linux/io.h>
#include <linux/slab.h>
#include "./common.h"
#include "./pipe.h"
@@ -23,13 +22,8 @@
/*
* macros
*/
-#define usbhsp_priv_to_pipeinfo(pr) (&(pr)->pipe_info)
-#define usbhsp_pipe_to_priv(p) ((p)->priv)
-
#define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2)
-#define usbhsp_is_dcp(p) ((p)->priv->pipe_info.pipe == (p))
-
#define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f)
#define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f)
#define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f)
@@ -77,10 +71,10 @@ void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
*/
static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, DCPCTR, mask, val);
else
usbhs_bset(priv, PIPEnCTR + offset, mask, val);
@@ -88,10 +82,10 @@ static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
return usbhs_read(priv, DCPCTR);
else
return usbhs_read(priv, PIPEnCTR + offset);
@@ -104,9 +98,9 @@ static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
u16 dcp_reg, u16 pipe_reg,
u16 mask, u16 val)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, dcp_reg, mask, val);
else
usbhs_bset(priv, pipe_reg, mask, val);
@@ -115,9 +109,9 @@ static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe,
u16 dcp_reg, u16 pipe_reg)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
return usbhs_read(priv, dcp_reg);
else
return usbhs_read(priv, pipe_reg);
@@ -136,7 +130,7 @@ static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
*/
static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
return;
__usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val);
@@ -160,7 +154,7 @@ static u16 usbhsp_pipe_maxp_get(struct usbhs_pipe *pipe)
*/
static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
/*
* On pipe, this is necessary before
@@ -182,7 +176,7 @@ static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int timeout = 1024;
u16 val;
@@ -205,7 +199,7 @@ static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
* - "Pipe Control Registers Switching Procedure"
*/
usbhs_write(priv, CFIFOSEL, 0);
- usbhs_fifo_disable(pipe);
+ usbhs_pipe_disable(pipe);
do {
val = usbhsp_pipectrl_get(pipe);
@@ -220,7 +214,7 @@ static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
return -EBUSY;
}
-static int usbhsp_pipe_is_accessible(struct usbhs_pipe *pipe)
+int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe)
{
u16 val;
@@ -253,7 +247,7 @@ static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe)
}
}
-void usbhs_fifo_disable(struct usbhs_pipe *pipe)
+void usbhs_pipe_disable(struct usbhs_pipe *pipe)
{
int timeout = 1024;
u16 val;
@@ -273,7 +267,7 @@ void usbhs_fifo_disable(struct usbhs_pipe *pipe)
} while (timeout--);
}
-void usbhs_fifo_enable(struct usbhs_pipe *pipe)
+void usbhs_pipe_enable(struct usbhs_pipe *pipe)
{
/* see "Pipe n Control Register" - "PID" */
__usbhsp_pid_try_nak_if_stall(pipe);
@@ -281,7 +275,7 @@ void usbhs_fifo_enable(struct usbhs_pipe *pipe)
usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF);
}
-void usbhs_fifo_stall(struct usbhs_pipe *pipe)
+void usbhs_pipe_stall(struct usbhs_pipe *pipe)
{
u16 pid = usbhsp_pipectrl_get(pipe);
@@ -302,191 +296,6 @@ void usbhs_fifo_stall(struct usbhs_pipe *pipe)
}
/*
- * CFIFO ctrl
- */
-void usbhs_fifo_send_terminator(struct usbhs_pipe *pipe)
-{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
-
- usbhs_bset(priv, CFIFOCTR, BVAL, BVAL);
-}
-
-static void usbhsp_fifo_clear(struct usbhs_pipe *pipe)
-{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
-
- usbhs_write(priv, CFIFOCTR, BCLR);
-}
-
-static int usbhsp_fifo_barrier(struct usbhs_priv *priv)
-{
- int timeout = 1024;
-
- do {
- /* The FIFO port is accessible */
- if (usbhs_read(priv, CFIFOCTR) & FRDY)
- return 0;
-
- udelay(10);
- } while (timeout--);
-
- return -EBUSY;
-}
-
-static int usbhsp_fifo_rcv_len(struct usbhs_priv *priv)
-{
- return usbhs_read(priv, CFIFOCTR) & DTLN_MASK;
-}
-
-static int usbhsp_fifo_select(struct usbhs_pipe *pipe, int write)
-{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
- struct device *dev = usbhs_priv_to_dev(priv);
- int timeout = 1024;
- u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */
- u16 base = usbhs_pipe_number(pipe); /* CURPIPE */
-
- if (usbhsp_is_dcp(pipe))
- base |= (1 == write) << 5; /* ISEL */
-
- /* "base" will be used below */
- usbhs_write(priv, CFIFOSEL, base | MBW_32);
-
- /* check ISEL and CURPIPE value */
- while (timeout--) {
- if (base == (mask & usbhs_read(priv, CFIFOSEL)))
- return 0;
- udelay(10);
- }
-
- dev_err(dev, "fifo select error\n");
-
- return -EIO;
-}
-
-int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe)
-{
- return usbhsp_fifo_select(pipe, 1);
-}
-
-int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len)
-{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
- void __iomem *addr = priv->base + CFIFO;
- int maxp = usbhs_pipe_get_maxpacket(pipe);
- int total_len;
- int i, ret;
-
- ret = usbhsp_pipe_is_accessible(pipe);
- if (ret < 0)
- return ret;
-
- ret = usbhsp_fifo_select(pipe, 1);
- if (ret < 0)
- return ret;
-
- ret = usbhsp_fifo_barrier(priv);
- if (ret < 0)
- return ret;
-
- len = min(len, maxp);
- total_len = len;
-
- /*
- * FIXME
- *
- * 32-bit access only
- */
- if (len >= 4 &&
- !((unsigned long)buf & 0x03)) {
- iowrite32_rep(addr, buf, len / 4);
- len %= 4;
- buf += total_len - len;
- }
-
- /* the rest operation */
- for (i = 0; i < len; i++)
- iowrite8(buf[i], addr + (0x03 - (i & 0x03)));
-
- if (total_len < maxp)
- usbhs_fifo_send_terminator(pipe);
-
- return total_len;
-}
-
-int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
-{
- int ret;
-
- /*
- * select pipe and enable it to prepare packet receive
- */
- ret = usbhsp_fifo_select(pipe, 0);
- if (ret < 0)
- return ret;
-
- usbhs_fifo_enable(pipe);
-
- return ret;
-}
-
-int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len)
-{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
- void __iomem *addr = priv->base + CFIFO;
- int rcv_len;
- int i, ret;
- int total_len;
- u32 data = 0;
-
- ret = usbhsp_fifo_select(pipe, 0);
- if (ret < 0)
- return ret;
-
- ret = usbhsp_fifo_barrier(priv);
- if (ret < 0)
- return ret;
-
- rcv_len = usbhsp_fifo_rcv_len(priv);
-
- /*
- * Buffer clear if Zero-Length packet
- *
- * see
- * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function"
- */
- if (0 == rcv_len) {
- usbhsp_fifo_clear(pipe);
- return 0;
- }
-
- len = min(rcv_len, len);
- total_len = len;
-
- /*
- * FIXME
- *
- * 32-bit access only
- */
- if (len >= 4 &&
- !((unsigned long)buf & 0x03)) {
- ioread32_rep(addr, buf, len / 4);
- len %= 4;
- buf += rcv_len - len;
- }
-
- /* the rest operation */
- for (i = 0; i < len; i++) {
- if (!(i & 0x03))
- data = ioread32(addr);
-
- buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
- }
-
- return total_len;
-}
-
-/*
* pipe setup
*/
static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe)
@@ -519,7 +328,7 @@ static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
};
int is_double = usbhsp_possible_double_buffer(pipe);
- if (usbhsp_is_dcp(pipe))
+ if (usbhs_pipe_is_dcp(pipe))
return -EINVAL;
/*
@@ -550,12 +359,15 @@ static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
/* DIR */
if (usb_endpoint_dir_in(desc))
- usbhsp_flags_set(pipe, IS_DIR_IN);
+ usbhsp_flags_set(pipe, IS_DIR_HOST);
if ((is_host && usb_endpoint_dir_out(desc)) ||
(!is_host && usb_endpoint_dir_in(desc)))
dir |= DIR_OUT;
+ if (!dir)
+ usbhsp_flags_set(pipe, IS_DIR_IN);
+
/* SHTNAK */
if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
!dir)
@@ -587,8 +399,8 @@ static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
const struct usb_endpoint_descriptor *desc,
int is_host)
{
- struct usbhs_priv *priv = usbhsp_pipe_to_priv(pipe);
- struct usbhs_pipe_info *info = usbhsp_priv_to_pipeinfo(priv);
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
struct device *dev = usbhs_priv_to_dev(priv);
int pipe_num = usbhs_pipe_number(pipe);
int is_double = usbhsp_possible_double_buffer(pipe);
@@ -666,7 +478,7 @@ static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
*/
int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe)
{
- u16 mask = usbhsp_is_dcp(pipe) ? DCP_MAXP_MASK : PIPE_MAXP_MASK;
+ u16 mask = usbhs_pipe_is_dcp(pipe) ? DCP_MAXP_MASK : PIPE_MAXP_MASK;
usbhsp_pipe_select(pipe);
@@ -678,6 +490,11 @@ int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe)
return usbhsp_flags_has(pipe, IS_DIR_IN);
}
+int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe)
+{
+ return usbhsp_flags_has(pipe, IS_DIR_HOST);
+}
+
void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe)
{
usbhsp_pipectrl_set(pipe, SQCLR, SQCLR);
@@ -714,12 +531,20 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
return pipe;
}
-void usbhs_pipe_init(struct usbhs_priv *priv)
+void usbhs_pipe_init(struct usbhs_priv *priv,
+ void (*done)(struct usbhs_pkt *pkt),
+ int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
{
- struct usbhs_pipe_info *info = usbhsp_priv_to_pipeinfo(priv);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
struct usbhs_pipe *pipe;
int i;
+ if (!done) {
+ dev_err(dev, "no done function\n");
+ return;
+ }
+
/*
* FIXME
*
@@ -738,10 +563,17 @@ void usbhs_pipe_init(struct usbhs_priv *priv)
info->bufnmb_last++;
usbhsp_flags_init(pipe);
+ pipe->fifo = NULL;
pipe->mod_private = NULL;
+ INIT_LIST_HEAD(&pipe->list);
- usbhsp_fifo_clear(pipe);
+ /* pipe force init */
+ usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
+ usbhsp_pipectrl_set(pipe, ACLRM, 0);
}
+
+ info->done = done;
+ info->dma_map_ctrl = dma_map_ctrl;
}
struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
@@ -761,7 +593,9 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
return NULL;
}
- usbhs_fifo_disable(pipe);
+ INIT_LIST_HEAD(&pipe->list);
+
+ usbhs_pipe_disable(pipe);
/* make sure pipe is not busy */
ret = usbhsp_pipe_barrier(pipe);
@@ -774,11 +608,6 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
pipebuf = usbhsp_setup_pipebuff(pipe, desc, is_host);
pipemaxp = usbhsp_setup_pipemaxp(pipe, desc, is_host);
- /* buffer clear
- * see PIPECFG :: BFRE */
- usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
- usbhsp_pipectrl_set(pipe, ACLRM, 0);
-
usbhsp_pipe_select(pipe);
usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg);
usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf);
@@ -794,6 +623,18 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
return pipe;
}
+void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo)
+{
+ if (pipe->fifo)
+ pipe->fifo->pipe = NULL;
+
+ pipe->fifo = fifo;
+
+ if (fifo)
+ fifo->pipe = pipe;
+}
+
+
/*
* dcp control
*/
@@ -813,25 +654,25 @@ struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv)
usbhsp_pipe_select(pipe);
usbhs_pipe_clear_sequence(pipe);
+ INIT_LIST_HEAD(&pipe->list);
return pipe;
}
void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe)
{
- WARN_ON(!usbhsp_is_dcp(pipe));
+ WARN_ON(!usbhs_pipe_is_dcp(pipe));
- usbhs_fifo_enable(pipe);
+ usbhs_pipe_enable(pipe);
usbhsp_pipectrl_set(pipe, CCPL, CCPL);
}
-
/*
* pipe module function
*/
int usbhs_pipe_probe(struct usbhs_priv *priv)
{
- struct usbhs_pipe_info *info = usbhsp_priv_to_pipeinfo(priv);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
struct usbhs_pipe *pipe;
struct device *dev = usbhs_priv_to_dev(priv);
u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
@@ -868,7 +709,7 @@ int usbhs_pipe_probe(struct usbhs_priv *priv)
void usbhs_pipe_remove(struct usbhs_priv *priv)
{
- struct usbhs_pipe_info *info = usbhsp_priv_to_pipeinfo(priv);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
kfree(info->pipe);
}
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 1cca9b7fb266..35e100477e55 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -18,6 +18,7 @@
#define RENESAS_USB_PIPE_H
#include "./common.h"
+#include "./fifo.h"
/*
* struct
@@ -26,10 +27,13 @@ struct usbhs_pipe {
u32 pipe_type; /* USB_ENDPOINT_XFER_xxx */
struct usbhs_priv *priv;
+ struct usbhs_fifo *fifo;
+ struct list_head list;
u32 flags;
#define USBHS_PIPE_FLAGS_IS_USED (1 << 0)
#define USBHS_PIPE_FLAGS_IS_DIR_IN (1 << 1)
+#define USBHS_PIPE_FLAGS_IS_DIR_HOST (1 << 2)
void *mod_private;
};
@@ -38,6 +42,9 @@ struct usbhs_pipe_info {
struct usbhs_pipe *pipe;
int size; /* array size of "pipe" */
int bufnmb_last; /* FIXME : driver needs good allocator */
+
+ void (*done)(struct usbhs_pkt *pkt);
+ int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map);
};
/*
@@ -55,25 +62,9 @@ struct usbhs_pipe_info {
__usbhs_for_each_pipe(0, pos, &((priv)->pipe_info), i)
/*
- * pipe module probe / remove
- */
-int usbhs_pipe_probe(struct usbhs_priv *priv);
-void usbhs_pipe_remove(struct usbhs_priv *priv);
-
-/*
- * cfifo
+ * data
*/
-int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len);
-int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len);
-int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe);
-int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe);
-
-void usbhs_fifo_enable(struct usbhs_pipe *pipe);
-void usbhs_fifo_disable(struct usbhs_pipe *pipe);
-void usbhs_fifo_stall(struct usbhs_pipe *pipe);
-
-void usbhs_fifo_send_terminator(struct usbhs_pipe *pipe);
-
+#define usbhs_priv_to_pipeinfo(pr) (&(pr)->pipe_info)
/*
* usb request
@@ -87,13 +78,26 @@ void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
struct usbhs_pipe
*usbhs_pipe_malloc(struct usbhs_priv *priv,
const struct usb_endpoint_descriptor *desc);
-
+int usbhs_pipe_probe(struct usbhs_priv *priv);
+void usbhs_pipe_remove(struct usbhs_priv *priv);
int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
-void usbhs_pipe_init(struct usbhs_priv *priv);
+int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
+void usbhs_pipe_init(struct usbhs_priv *priv,
+ void (*done)(struct usbhs_pkt *pkt),
+ int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map));
int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe);
+int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
+void usbhs_pipe_enable(struct usbhs_pipe *pipe);
+void usbhs_pipe_disable(struct usbhs_pipe *pipe);
+void usbhs_pipe_stall(struct usbhs_pipe *pipe);
+void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
+#define usbhs_pipe_to_priv(p) ((p)->priv)
#define usbhs_pipe_number(p) (int)((p) - (p)->priv->pipe_info.pipe)
+#define usbhs_pipe_is_dcp(p) ((p)->priv->pipe_info.pipe == (p))
+#define usbhs_pipe_to_fifo(p) ((p)->fifo)
+#define usbhs_pipe_is_busy(p) usbhs_pipe_to_fifo(p)
/*
* dcp control
diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c
index c0c5665e60a9..200fd7c6c7d5 100644
--- a/drivers/usb/wusbcore/cbaf.c
+++ b/drivers/usb/wusbcore/cbaf.c
@@ -298,7 +298,7 @@ static int cbaf_cdid_get(struct cbaf *cbaf)
if (result < needed) {
dev_err(dev, "Not enough data in DEVICE_INFO reply (%zu vs "
"%zu bytes needed)\n", (size_t)result, needed);
- return result;
+ return -ENOENT;
}
strlcpy(cbaf->device_name, di->DeviceFriendlyName, CBA_NAME_LEN);
@@ -350,7 +350,7 @@ static ssize_t cbaf_wusb_chid_store(struct device *dev,
return result;
result = cbaf_cdid_get(cbaf);
if (result < 0)
- return -result;
+ return result;
return size;
}
static DEVICE_ATTR(wusb_chid, 0600, cbaf_wusb_chid_show, cbaf_wusb_chid_store);
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