/*
- * Driver for the NetChip 2280 USB device controller.
- * Specs and errata are available from <http://www.netchip.com>.
+ * Driver for the PLX NET2280 USB device controller.
+ * Specs and errata are available from <http://www.plxtech.com>.
*
- * NetChip Technology Inc. supported the development of this driver.
+ * PLX Technology Inc. (formerly NetChip Technology) supported the
+ * development of this driver.
*
*
* CODE STATUS HIGHLIGHTS
*
- * Used with a gadget driver like "zero.c" this enumerates fine to Windows
- * or Linux hosts; handles disconnect, reconnect, and reset, for full or
- * high speed operation; and passes USB-IF "chapter 9" tests.
- *
- * Handles standard stress loads from the Linux "usbtest" driver, with
- * either DMA (default) or PIO (use_dma=n) used for ep-{a,b,c,d}. Testing
- * with "ttcp" (and the "ether.c" driver) behaves nicely too.
+ * This driver should work well with most "gadget" drivers, including
+ * the File Storage, Serial, and Ethernet/RNDIS gadget drivers
+ * as well as Gadget Zero and Gadgetfs.
*
* DMA is enabled by default. Drivers using transfer queues might use
* DMA chaining to remove IRQ latencies between transfers. (Except when
/*
* Copyright (C) 2003 David Brownell
- * Copyright (C) 2003 NetChip Technologies
+ * Copyright (C) 2003-2005 PLX Technology, Inc.
+ *
+ * Modified Seth Levy 2005 PLX Technology, Inc. to provide compatibility
+ * with 2282 chip
*
* 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
#undef DEBUG /* messages on error and most fault paths */
#undef VERBOSE /* extra debug messages (success too) */
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <asm/unaligned.h>
-#define DRIVER_DESC "NetChip 2280 USB Peripheral Controller"
-#define DRIVER_VERSION "2004 Jan 14"
+#define DRIVER_DESC "PLX NET228x USB Peripheral Controller"
+#define DRIVER_VERSION "2005 Sept 27"
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define EP_DONTUSE 13 /* nonzero */
#define USE_RDK_LEDS /* GPIO pins control three LEDs */
-#define USE_SYSFS_DEBUG_FILES
static const char driver_name [] = "net2280";
static const char driver_desc [] = DRIVER_DESC;
static const char ep0name [] = "ep0";
-static const char *ep_name [] = {
+static const char *const ep_name [] = {
ep0name,
"ep-a", "ep-b", "ep-c", "ep-d",
"ep-e", "ep-f",
/* "modprobe net2280 fifo_mode=1" etc */
module_param (fifo_mode, ushort, 0644);
+/* enable_suspend -- When enabled, the driver will respond to
+ * USB suspend requests by powering down the NET2280. Otherwise,
+ * USB suspend requests will be ignored. This is acceptible for
+ * self-powered devices
+ */
+static int enable_suspend = 0;
+
+/* "modprobe net2280 enable_suspend=1" etc */
+module_param (enable_suspend, bool, S_IRUGO);
+
#define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out")
-#if defined(USE_SYSFS_DEBUG_FILES) || defined (DEBUG)
+#if defined(CONFIG_USB_GADGET_DEBUG_FILES) || defined (DEBUG)
static char *type_string (u8 bmAttributes)
{
switch ((bmAttributes) & USB_ENDPOINT_XFERTYPE_MASK) {
ep->is_in = (tmp & USB_DIR_IN) != 0;
if (!ep->is_in)
writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
+ else if (dev->pdev->device != 0x2280) {
+ /* Added for 2282, Don't use nak packets on an in endpoint,
+ * this was ignored on 2280
+ */
+ writel ((1 << CLEAR_NAK_OUT_PACKETS)
+ | (1 << CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
+ }
writel (tmp, &ep->regs->ep_cfg);
writel (tmp, &dev->regs->pciirqenb0);
tmp = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
- | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
- | readl (&ep->regs->ep_irqenb);
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE);
+ if (dev->pdev->device == 0x2280)
+ tmp |= readl (&ep->regs->ep_irqenb);
writel (tmp, &ep->regs->ep_irqenb);
} else { /* dma, per-request */
tmp = (1 << (8 + ep->num)); /* completion */
return 0;
}
-static int handshake (u32 *ptr, u32 mask, u32 done, int usec)
+static int handshake (u32 __iomem *ptr, u32 mask, u32 done, int usec)
{
u32 result;
return -ETIMEDOUT;
}
-static struct usb_ep_ops net2280_ep_ops;
+static const struct usb_ep_ops net2280_ep_ops;
-static void ep_reset (struct net2280_regs *regs, struct net2280_ep *ep)
+static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep)
{
u32 tmp;
/* init to our chosen defaults, notably so that we NAK OUT
* packets until the driver queues a read (+note erratum 0112)
*/
- writel ( (1 << SET_NAK_OUT_PACKETS_MODE)
+ if (!ep->is_in || ep->dev->pdev->device == 0x2280) {
+ tmp = (1 << SET_NAK_OUT_PACKETS_MODE)
| (1 << SET_NAK_OUT_PACKETS)
| (1 << CLEAR_EP_HIDE_STATUS_PHASE)
- | (1 << CLEAR_INTERRUPT_MODE)
- | (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
- | (1 << CLEAR_ENDPOINT_TOGGLE)
- | (1 << CLEAR_ENDPOINT_HALT)
- , &ep->regs->ep_rsp);
+ | (1 << CLEAR_INTERRUPT_MODE);
+ } else {
+ /* added for 2282 */
+ tmp = (1 << CLEAR_NAK_OUT_PACKETS_MODE)
+ | (1 << CLEAR_NAK_OUT_PACKETS)
+ | (1 << CLEAR_EP_HIDE_STATUS_PHASE)
+ | (1 << CLEAR_INTERRUPT_MODE);
+ }
+
+ if (ep->num != 0) {
+ tmp |= (1 << CLEAR_ENDPOINT_TOGGLE)
+ | (1 << CLEAR_ENDPOINT_HALT);
+ }
+ writel (tmp, &ep->regs->ep_rsp);
/* scrub most status bits, and flush any fifo state */
- writel ( (1 << TIMEOUT)
+ if (ep->dev->pdev->device == 0x2280)
+ tmp = (1 << FIFO_OVERFLOW)
+ | (1 << FIFO_UNDERFLOW);
+ else
+ tmp = 0;
+
+ writel (tmp | (1 << TIMEOUT)
| (1 << USB_STALL_SENT)
| (1 << USB_IN_NAK_SENT)
| (1 << USB_IN_ACK_RCVD)
| (1 << USB_OUT_PING_NAK_SENT)
| (1 << USB_OUT_ACK_SENT)
- | (1 << FIFO_OVERFLOW)
- | (1 << FIFO_UNDERFLOW)
| (1 << FIFO_FLUSH)
| (1 << SHORT_PACKET_OUT_DONE_INTERRUPT)
| (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)
/*-------------------------------------------------------------------------*/
static struct usb_request *
-net2280_alloc_request (struct usb_ep *_ep, int gfp_flags)
+net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
{
struct net2280_ep *ep;
struct net2280_request *req;
return NULL;
ep = container_of (_ep, struct net2280_ep, ep);
- req = kmalloc (sizeof *req, gfp_flags);
+ req = kzalloc(sizeof(*req), gfp_flags);
if (!req)
return NULL;
- memset (req, 0, sizeof *req);
req->req.dma = DMA_ADDR_INVALID;
INIT_LIST_HEAD (&req->queue);
/*-------------------------------------------------------------------------*/
-#undef USE_KMALLOC
-
-/* many common platforms have dma-coherent caches, which means that it's
- * safe to use kmalloc() memory for all i/o buffers without using any
- * cache flushing calls. (unless you're trying to share cache lines
- * between dma and non-dma activities, which is a slow idea in any case.)
+/*
+ * dma-coherent memory allocation (for dma-capable endpoints)
*
- * other platforms need more care, with 2.5 having a moderately general
- * solution (which falls down for allocations smaller than one page)
- * that improves significantly on the 2.4 PCI allocators by removing
- * the restriction that memory never be freed in_interrupt().
+ * NOTE: the dma_*_coherent() API calls suck. Most implementations are
+ * (a) page-oriented, so small buffers lose big; and (b) asymmetric with
+ * respect to calls with irqs disabled: alloc is safe, free is not.
+ * We currently work around (b), but not (a).
*/
-#if defined(CONFIG_X86)
-#define USE_KMALLOC
-
-#elif defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
-#define USE_KMALLOC
-
-#elif defined(CONFIG_MIPS) && !defined(CONFIG_NONCOHERENT_IO)
-#define USE_KMALLOC
-
-/* FIXME there are other cases, including an x86-64 one ... */
-#endif
-/* allocating buffers this way eliminates dma mapping overhead, which
- * on some platforms will mean eliminating a per-io buffer copy. with
- * some kinds of system caches, further tweaks may still be needed.
- */
static void *
net2280_alloc_buffer (
struct usb_ep *_ep,
unsigned bytes,
dma_addr_t *dma,
- int gfp_flags
+ gfp_t gfp_flags
)
{
void *retval;
return NULL;
*dma = DMA_ADDR_INVALID;
-#if defined(USE_KMALLOC)
- retval = kmalloc(bytes, gfp_flags);
- if (retval)
- *dma = virt_to_phys(retval);
-#else
- if (ep->dma) {
- /* the main problem with this call is that it wastes memory
- * on typical 1/N page allocations: it allocates 1-N pages.
- */
-#warning Using dma_alloc_coherent even with buffers smaller than a page.
+ if (ep->dma)
retval = dma_alloc_coherent(&ep->dev->pdev->dev,
bytes, dma, gfp_flags);
- } else
+ else
retval = kmalloc(bytes, gfp_flags);
-#endif
return retval;
}
+static DEFINE_SPINLOCK(buflock);
+static LIST_HEAD(buffers);
+
+struct free_record {
+ struct list_head list;
+ struct device *dev;
+ unsigned bytes;
+ dma_addr_t dma;
+};
+
+static void do_free(unsigned long ignored)
+{
+ spin_lock_irq(&buflock);
+ while (!list_empty(&buffers)) {
+ struct free_record *buf;
+
+ buf = list_entry(buffers.next, struct free_record, list);
+ list_del(&buf->list);
+ spin_unlock_irq(&buflock);
+
+ dma_free_coherent(buf->dev, buf->bytes, buf, buf->dma);
+
+ spin_lock_irq(&buflock);
+ }
+ spin_unlock_irq(&buflock);
+}
+
+static DECLARE_TASKLET(deferred_free, do_free, 0);
+
static void
net2280_free_buffer (
struct usb_ep *_ep,
- void *buf,
+ void *address,
dma_addr_t dma,
unsigned bytes
) {
/* free memory into the right allocator */
-#ifndef USE_KMALLOC
if (dma != DMA_ADDR_INVALID) {
struct net2280_ep *ep;
+ struct free_record *buf = address;
+ unsigned long flags;
ep = container_of(_ep, struct net2280_ep, ep);
if (!_ep)
return;
- dma_free_coherent(&ep->dev->pdev->dev, bytes, buf, dma);
+
+ ep = container_of (_ep, struct net2280_ep, ep);
+ buf->dev = &ep->dev->pdev->dev;
+ buf->bytes = bytes;
+ buf->dma = dma;
+
+ spin_lock_irqsave(&buflock, flags);
+ list_add_tail(&buf->list, &buffers);
+ tasklet_schedule(&deferred_free);
+ spin_unlock_irqrestore(&buflock, flags);
} else
-#endif
- kfree (buf);
+ kfree (address);
}
/*-------------------------------------------------------------------------*/
static void
write_fifo (struct net2280_ep *ep, struct usb_request *req)
{
- struct net2280_ep_regs *regs = ep->regs;
+ struct net2280_ep_regs __iomem *regs = ep->regs;
u8 *buf;
u32 tmp;
unsigned count, total;
*/
static void out_flush (struct net2280_ep *ep)
{
- u32 *statp, tmp;
+ u32 __iomem *statp;
+ u32 tmp;
ASSERT_OUT_NAKING (ep);
static int
read_fifo (struct net2280_ep *ep, struct net2280_request *req)
{
- struct net2280_ep_regs *regs = ep->regs;
+ struct net2280_ep_regs __iomem *regs = ep->regs;
u8 *buf = req->req.buf + req->req.actual;
unsigned count, tmp, is_short;
unsigned cleanup = 0, prevent = 0;
}
if (count) {
tmp = readl (®s->ep_data);
- cpu_to_le32s (&tmp);
+ /* LE conversion is implicit here: */
do {
*buf++ = (u8) tmp;
tmp >>= 8;
*/
if (ep->is_in)
dmacount |= (1 << DMA_DIRECTION);
- else if ((dmacount % ep->ep.maxpacket) != 0)
+ if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0)
+ || ep->dev->pdev->device != 0x2280)
dmacount |= (1 << END_OF_CHAIN);
req->valid = valid;
dmacount |= (1 << DMA_DONE_INTERRUPT_ENABLE);
/* td->dmadesc = previously set by caller */
- td->dmaaddr = cpu_to_le32p (&req->req.dma);
+ td->dmaaddr = cpu_to_le32 (req->req.dma);
/* 2280 may be polling VALID_BIT through ep->dma->dmadesc */
wmb ();
/* erratum 0116 workaround part 2 (no AUTOSTART) */
| (1 << DMA_ENABLE);
-static inline void spin_stop_dma (struct net2280_dma_regs *dma)
+static inline void spin_stop_dma (struct net2280_dma_regs __iomem *dma)
{
handshake (&dma->dmactl, (1 << DMA_ENABLE), 0, 50);
}
-static inline void stop_dma (struct net2280_dma_regs *dma)
+static inline void stop_dma (struct net2280_dma_regs __iomem *dma)
{
writel (readl (&dma->dmactl) & ~(1 << DMA_ENABLE), &dma->dmactl);
spin_stop_dma (dma);
static void start_queue (struct net2280_ep *ep, u32 dmactl, u32 td_dma)
{
- struct net2280_dma_regs *dma = ep->dma;
+ struct net2280_dma_regs __iomem *dma = ep->dma;
+ unsigned int tmp = (1 << VALID_BIT) | (ep->is_in << DMA_DIRECTION);
- writel ((1 << VALID_BIT) | (ep->is_in << DMA_DIRECTION),
- &dma->dmacount);
+ if (ep->dev->pdev->device != 0x2280)
+ tmp |= (1 << END_OF_CHAIN);
+
+ writel (tmp, &dma->dmacount);
writel (readl (&dma->dmastat), &dma->dmastat);
writel (td_dma, &dma->dmadesc);
static void start_dma (struct net2280_ep *ep, struct net2280_request *req)
{
u32 tmp;
- struct net2280_dma_regs *dma = ep->dma;
+ struct net2280_dma_regs __iomem *dma = ep->dma;
/* FIXME can't use DMA for ZLPs */
/* previous OUT packet might have been short */
if (!ep->is_in && ((tmp = readl (&ep->regs->ep_stat))
- & (1 << NAK_OUT_PACKETS)) != 0) {
+ & (1 << NAK_OUT_PACKETS)) != 0) {
writel ((1 << SHORT_PACKET_TRANSFERRED_INTERRUPT),
&ep->regs->ep_stat);
/*-------------------------------------------------------------------------*/
static int
-net2280_queue (struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
+net2280_queue (struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
{
struct net2280_request *req;
struct net2280_ep *ep;
} /* else the irq handler advances the queue. */
+ ep->responded = 1;
if (req)
list_add_tail (&req->queue, &ep->queue);
done:
if (ep->in_fifo_validate)
dmactl |= (1 << DMA_FIFO_VALIDATE);
list_for_each_entry (entry, &ep->queue, queue) {
- u32 dmacount;
+ __le32 dmacount;
if (entry == req)
continue;
&ep->dma->dmadesc);
if (req->td->dmacount & dma_done_ie)
writel (readl (&ep->dma->dmacount)
- | dma_done_ie,
+ | le32_to_cpu(dma_done_ie),
&ep->dma->dmacount);
} else {
struct net2280_request *prev;
}
spin_unlock_irqrestore (&ep->dev->lock, flags);
- return req ? 0 : -EOPNOTSUPP;
+ return 0;
}
/*-------------------------------------------------------------------------*/
(void) readl (&ep->regs->ep_rsp);
}
-static struct usb_ep_ops net2280_ep_ops = {
+static const struct usb_ep_ops net2280_ep_ops = {
.enable = net2280_enable,
.disable = net2280_disable,
return 0;
}
+static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
+{
+ struct net2280 *dev;
+ u32 tmp;
+ unsigned long flags;
+
+ if (!_gadget)
+ return -ENODEV;
+ dev = container_of (_gadget, struct net2280, gadget);
+
+ spin_lock_irqsave (&dev->lock, flags);
+ tmp = readl (&dev->usb->usbctl);
+ dev->softconnect = (is_on != 0);
+ if (is_on)
+ tmp |= (1 << USB_DETECT_ENABLE);
+ else
+ tmp &= ~(1 << USB_DETECT_ENABLE);
+ writel (tmp, &dev->usb->usbctl);
+ spin_unlock_irqrestore (&dev->lock, flags);
+
+ return 0;
+}
+
static const struct usb_gadget_ops net2280_ops = {
.get_frame = net2280_get_frame,
.wakeup = net2280_wakeup,
.set_selfpowered = net2280_set_selfpowered,
+ .pullup = net2280_pullup,
};
/*-------------------------------------------------------------------------*/
-#ifdef USE_SYSFS_DEBUG_FILES
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+/* FIXME move these into procfs, and use seq_file.
+ * Sysfs _still_ doesn't behave for arbitrarily sized files,
+ * and also doesn't help products using this with 2.4 kernels.
+ */
/* "function" sysfs attribute */
static ssize_t
-show_function (struct device *_dev, char *buf)
+show_function (struct device *_dev, struct device_attribute *attr, char *buf)
{
struct net2280 *dev = dev_get_drvdata (_dev);
static DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
static ssize_t
-show_registers (struct device *_dev, char *buf)
+show_registers (struct device *_dev, struct device_attribute *attr, char *buf)
{
struct net2280 *dev;
char *next;
unsigned long flags;
int i;
u32 t1, t2;
- char *s;
+ const char *s;
dev = dev_get_drvdata (_dev);
next = buf;
}
/* Indexed Registers */
- // none yet
+ // none yet
/* Statistics */
t = scnprintf (next, size, "\nirqs: ");
static DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
static ssize_t
-show_queues (struct device *_dev, char *buf)
+show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
{
struct net2280 *dev;
char *next;
({ char *val;
switch (d->bmAttributes & 0x03) {
case USB_ENDPOINT_XFER_BULK:
- val = "bulk"; break;
+ val = "bulk"; break;
case USB_ENDPOINT_XFER_INT:
- val = "intr"; break;
+ val = "intr"; break;
default:
- val = "iso"; break;
+ val = "iso"; break;
}; val; }),
le16_to_cpu (d->wMaxPacketSize) & 0x1fff,
ep->dma ? "dma" : "pio", ep->fifo_size
td = req->td;
t = scnprintf (next, size, "\t td %08x "
" count %08x buf %08x desc %08x\n",
- req->td_dma, td->dmacount,
- td->dmaaddr, td->dmadesc);
+ (u32) req->td_dma,
+ le32_to_cpu (td->dmacount),
+ le32_to_cpu (td->dmaaddr),
+ le32_to_cpu (td->dmadesc));
if (t <= 0 || t > size)
goto done;
size -= t;
#else
-#define device_create_file(a,b) do {} while (0)
-#define device_remove_file device_create_file
+#define device_create_file(a,b) (0)
+#define device_remove_file(a,b) do { } while (0)
#endif
list_add_tail (&dev->ep [6].ep.ep_list, &dev->gadget.ep_list);
}
+/* just declare this in any driver that really need it */
+extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode);
+
/**
* net2280_set_fifo_mode - change allocation of fifo buffers
* @gadget: access to the net2280 device that will be updated
* @mode: 0 for default, four 1kB buffers (ep-a through ep-d);
- * 1 for two 2kB buffers (ep-a and ep-b only);
- * 2 for one 2kB buffer (ep-a) and two 1kB ones (ep-b, ep-c).
+ * 1 for two 2kB buffers (ep-a and ep-b only);
+ * 2 for one 2kB buffer (ep-a) and two 1kB ones (ep-b, ep-c).
*
* returns zero on success, else negative errno. when this succeeds,
* the contents of gadget->ep_list may have changed.
{
u32 tmp;
- /* force immediate bus disconnect, and synch through pci */
- writel (0, &dev->usb->usbctl);
dev->gadget.speed = USB_SPEED_UNKNOWN;
(void) readl (&dev->usb->usbctl);
, &dev->usb->stdrsp);
writel ( (1 << USB_ROOT_PORT_WAKEUP_ENABLE)
| (1 << SELF_POWERED_USB_DEVICE)
- /* erratum 0102 workaround */
- | ((dev->chiprev == 0100) ? 0 : 1) << SUSPEND_IMMEDIATELY
| (1 << REMOTE_WAKEUP_SUPPORT)
- | (1 << USB_DETECT_ENABLE)
+ | (dev->softconnect << USB_DETECT_ENABLE)
| (1 << SELF_POWERED_STATUS)
, &dev->usb->usbctl);
if (!driver
|| driver->speed != USB_SPEED_HIGH
|| !driver->bind
- || !driver->unbind
|| !driver->setup)
return -EINVAL;
if (!dev)
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;
return retval;
}
- device_create_file (&dev->pdev->dev, &dev_attr_function);
- device_create_file (&dev->pdev->dev, &dev_attr_queues);
+ retval = device_create_file (&dev->pdev->dev, &dev_attr_function);
+ if (retval) goto err_unbind;
+ retval = device_create_file (&dev->pdev->dev, &dev_attr_queues);
+ if (retval) goto err_func;
/* ... then enable host detection and ep0; and we're ready
* for set_configuration as well as eventual disconnect.
/* pci writes may still be posted */
return 0;
+
+err_func:
+ device_remove_file (&dev->pdev->dev, &dev_attr_function);
+err_unbind:
+ driver->unbind (&dev->gadget);
+ dev->gadget.dev.driver = NULL;
+ dev->driver = NULL;
+ return retval;
}
EXPORT_SYMBOL (usb_gadget_register_driver);
if (!dev)
return -ENODEV;
- if (!driver || driver != dev->driver)
+ if (!driver || driver != dev->driver || !driver->unbind)
return -EINVAL;
spin_lock_irqsave (&dev->lock, flags);
stop_activity (dev, driver);
spin_unlock_irqrestore (&dev->lock, flags);
+ net2280_pullup (&dev->gadget, 0);
+
driver->unbind (&dev->gadget);
dev->gadget.dev.driver = NULL;
dev->driver = NULL;
VDEBUG (ep->dev, "%s ack ep_stat %08x, req %p\n",
ep->ep.name, t, req ? &req->req : 0);
#endif
- writel (t & ~(1 << NAK_OUT_PACKETS), &ep->regs->ep_stat);
+ if (!ep->is_in || ep->dev->pdev->device == 0x2280)
+ writel (t & ~(1 << NAK_OUT_PACKETS), &ep->regs->ep_stat);
+ else
+ /* Added for 2282 */
+ writel (t, &ep->regs->ep_stat);
/* for ep0, monitor token irqs to catch data stage length errors
* and to synchronize on status.
ep->stopped = 1;
set_halt (ep);
mode = 2;
- } else if (!req && ep->stopped)
+ } else if (ep->responded &&
+ !req && !ep->stopped)
write_fifo (ep, NULL);
}
} else {
} else if (((t & (1 << DATA_OUT_PING_TOKEN_INTERRUPT))
&& req
&& req->req.actual == req->req.length)
- || !req) {
+ || (ep->responded && !req)) {
ep->dev->protocol_stall = 1;
set_halt (ep);
ep->stopped = 1;
if (likely (req)) {
req->td->dmacount = 0;
t = readl (&ep->regs->ep_avail);
- dma_done (ep, req, count, t);
+ dma_done (ep, req, count,
+ (ep->out_overflow || t)
+ ? -EOVERFLOW : 0);
}
/* also flush to prevent erratum 0106 trouble */
/* if we wrote it all, we're usually done */
if (req->req.actual == req->req.length) {
if (ep->num == 0) {
- /* wait for control status */
- if (mode != 2)
- req = NULL;
+ /* send zlps until the status stage */
} else if (!req->req.zero || len != ep->ep.maxpacket)
mode = 2;
}
u32 raw [2];
struct usb_ctrlrequest r;
} u;
- int tmp = 0;
+ int tmp;
struct net2280_request *req;
if (dev->gadget.speed == USB_SPEED_UNKNOWN) {
}
ep->stopped = 0;
dev->protocol_stall = 0;
- writel ( (1 << TIMEOUT)
+
+ if (ep->dev->pdev->device == 0x2280)
+ tmp = (1 << FIFO_OVERFLOW)
+ | (1 << FIFO_UNDERFLOW);
+ else
+ tmp = 0;
+
+ writel (tmp | (1 << TIMEOUT)
| (1 << USB_STALL_SENT)
| (1 << USB_IN_NAK_SENT)
| (1 << USB_IN_ACK_RCVD)
| (1 << USB_OUT_PING_NAK_SENT)
| (1 << USB_OUT_ACK_SENT)
- | (1 << FIFO_OVERFLOW)
- | (1 << FIFO_UNDERFLOW)
| (1 << SHORT_PACKET_OUT_DONE_INTERRUPT)
| (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)
| (1 << DATA_PACKET_RECEIVED_INTERRUPT)
, &ep->regs->ep_stat);
u.raw [0] = readl (&dev->usb->setup0123);
u.raw [1] = readl (&dev->usb->setup4567);
-
+
cpu_to_le32s (&u.raw [0]);
cpu_to_le32s (&u.raw [1]);
- le16_to_cpus (&u.r.wValue);
- le16_to_cpus (&u.r.wIndex);
- le16_to_cpus (&u.r.wLength);
+ tmp = 0;
+
+#define w_value le16_to_cpup (&u.r.wValue)
+#define w_index le16_to_cpup (&u.r.wIndex)
+#define w_length le16_to_cpup (&u.r.wLength)
/* ack the irq */
writel (1 << SETUP_PACKET_INTERRUPT, &dev->regs->irqstat0);
/* we made the hardware handle most lowlevel requests;
* everything else goes uplevel to the gadget code.
*/
+ ep->responded = 1;
switch (u.r.bRequest) {
case USB_REQ_GET_STATUS: {
struct net2280_ep *e;
- u16 status;
+ __le32 status;
/* hw handles device and interface status */
if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT))
goto delegate;
- if ((e = get_ep_by_addr (dev, u.r.wIndex)) == 0
- || u.r.wLength > 2)
+ if ((e = get_ep_by_addr (dev, w_index)) == 0
+ || w_length > 2)
goto do_stall;
if (readl (&e->regs->ep_rsp)
& (1 << SET_ENDPOINT_HALT))
- status = __constant_cpu_to_le16 (1);
+ status = __constant_cpu_to_le32 (1);
else
- status = __constant_cpu_to_le16 (0);
+ status = __constant_cpu_to_le32 (0);
/* don't bother with a request object! */
writel (0, &dev->epregs [0].ep_irqenb);
- set_fifo_bytecount (ep, u.r.wLength);
- writel (status, &dev->epregs [0].ep_data);
+ set_fifo_bytecount (ep, w_length);
+ writel ((__force u32)status, &dev->epregs [0].ep_data);
allow_status (ep);
VDEBUG (dev, "%s stat %02x\n", ep->ep.name, status);
goto next_endpoints;
/* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
- if (u.r.wValue != USB_ENDPOINT_HALT
- || u.r.wLength != 0)
+ if (w_value != USB_ENDPOINT_HALT
+ || w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, u.r.wIndex)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == 0)
goto do_stall;
clear_halt (e);
allow_status (ep);
/* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
- if (u.r.wValue != USB_ENDPOINT_HALT
- || u.r.wLength != 0)
+ if (w_value != USB_ENDPOINT_HALT
+ || w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, u.r.wIndex)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == 0)
goto do_stall;
set_halt (e);
allow_status (ep);
break;
default:
delegate:
- VDEBUG (dev, "setup %02x.%02x v%04x i%04x "
+ VDEBUG (dev, "setup %02x.%02x v%04x i%04x l%04x"
"ep_cfg %08x\n",
u.r.bRequestType, u.r.bRequest,
- u.r.wValue, u.r.wIndex,
+ w_value, w_index, w_length,
readl (&ep->regs->ep_cfg));
+ ep->responded = 0;
spin_unlock (&dev->lock);
tmp = dev->driver->setup (&dev->gadget, &u.r);
spin_lock (&dev->lock);
*/
}
+#undef w_value
+#undef w_index
+#undef w_length
+
next_endpoints:
/* endpoint data irq ? */
scratch = stat & 0x7f;
static void handle_stat1_irqs (struct net2280 *dev, u32 stat)
{
struct net2280_ep *ep;
- u32 tmp, num, scratch;
+ u32 tmp, num, mask, scratch;
/* after disconnect there's nothing else to do! */
tmp = (1 << VBUS_INTERRUPT) | (1 << ROOT_PORT_RESET_INTERRUPT);
+ mask = (1 << HIGH_SPEED) | (1 << FULL_SPEED);
+
+ /* VBUS disconnect is indicated by VBUS_PIN and VBUS_INTERRUPT set.
+ * Root Port Reset is indicated by ROOT_PORT_RESET_INTERRRUPT set and
+ * both HIGH_SPEED and FULL_SPEED clear (as ROOT_PORT_RESET_INTERRUPT
+ * only indicates a change in the reset state).
+ */
if (stat & tmp) {
writel (tmp, &dev->regs->irqstat1);
- if (((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) != 0
- || (readl (&dev->usb->usbctl) & (1 << VBUS_PIN)) == 0
- ) && dev->gadget.speed != USB_SPEED_UNKNOWN) {
+ if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT))
+ && ((readl (&dev->usb->usbstat) & mask)
+ == 0))
+ || ((readl (&dev->usb->usbctl)
+ & (1 << VBUS_PIN)) == 0)
+ ) && ( dev->gadget.speed != USB_SPEED_UNKNOWN)) {
DEBUG (dev, "disconnect %s\n",
dev->driver->driver.name);
stop_activity (dev, dev->driver);
if (stat & (1 << SUSPEND_REQUEST_INTERRUPT)) {
if (dev->driver->suspend)
dev->driver->suspend (&dev->gadget);
- /* we use SUSPEND_IMMEDIATELY */
- stat &= ~(1 << SUSPEND_REQUEST_INTERRUPT);
+ if (!enable_suspend)
+ stat &= ~(1 << SUSPEND_REQUEST_INTERRUPT);
} else {
if (dev->driver->resume)
dev->driver->resume (&dev->gadget);
writel (stat, &dev->regs->irqstat1);
/* some status we can just ignore */
- stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
- | (1 << SUSPEND_REQUEST_INTERRUPT)
- | (1 << RESUME_INTERRUPT)
- | (1 << SOF_INTERRUPT));
+ if (dev->pdev->device == 0x2280)
+ stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+ | (1 << SUSPEND_REQUEST_INTERRUPT)
+ | (1 << RESUME_INTERRUPT)
+ | (1 << SOF_INTERRUPT));
+ else
+ stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+ | (1 << RESUME_INTERRUPT)
+ | (1 << SOF_DOWN_INTERRUPT)
+ | (1 << SOF_INTERRUPT));
+
if (!stat)
return;
// DEBUG (dev, "irqstat1 %08x\n", stat);
stat &= ~DMA_INTERRUPTS;
scratch >>= 9;
for (num = 0; scratch; num++) {
- struct net2280_dma_regs *dma;
+ struct net2280_dma_regs __iomem *dma;
tmp = 1 << num;
if ((tmp & scratch) == 0)
restart_dma (ep);
else if (ep->is_in && use_dma_chaining) {
struct net2280_request *req;
- u32 dmacount;
+ __le32 dmacount;
/* the descriptor at the head of the chain
* may still have VALID_BIT clear; that's
DEBUG (dev, "unhandled irqstat1 %08x\n", stat);
}
-static irqreturn_t net2280_irq (int irq, void *_dev, struct pt_regs * r)
+static irqreturn_t net2280_irq (int irq, void *_dev)
{
struct net2280 *dev = _dev;
+ /* shared interrupt, not ours */
+ if (!(readl(&dev->regs->irqstat0) & (1 << INTA_ASSERTED)))
+ return IRQ_NONE;
+
spin_lock (&dev->lock);
/* handle disconnect, dma, and more */
{
struct net2280 *dev = pci_get_drvdata (pdev);
- /* start with the driver above us */
- if (dev->driver) {
- /* should have been done already by driver model core */
- WARN (dev, "pci remove, driver '%s' is still registered\n",
- dev->driver->driver.name);
- usb_gadget_unregister_driver (dev->driver);
- }
+ BUG_ON(dev->driver);
/* then clean up the resources we allocated during probe() */
net2280_led_shutdown (dev);
{
struct net2280 *dev;
unsigned long resource, len;
- void *base = NULL;
+ void __iomem *base = NULL;
int retval, i;
- char buf [8], *bufp;
/* if you want to support more than one controller in a system,
* usb_gadget_driver_{register,unregister}() must change.
}
/* alloc, and start init */
- dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+ dev = kzalloc (sizeof *dev, GFP_KERNEL);
if (dev == NULL){
retval = -ENOMEM;
goto done;
}
- memset (dev, 0, sizeof *dev);
+ pci_set_drvdata (pdev, dev);
spin_lock_init (&dev->lock);
dev->pdev = pdev;
dev->gadget.ops = &net2280_ops;
/* now all the pci goodies ... */
if (pci_enable_device (pdev) < 0) {
- retval = -ENODEV;
+ retval = -ENODEV;
goto done;
}
dev->enabled = 1;
}
dev->region = 1;
+ /* FIXME provide firmware download interface to put
+ * 8051 code into the chip, e.g. to turn on PCI PM.
+ */
+
base = ioremap_nocache (resource, len);
if (base == NULL) {
DEBUG (dev, "can't map memory\n");
retval = -EFAULT;
goto done;
}
- dev->regs = (struct net2280_regs *) base;
- dev->usb = (struct net2280_usb_regs *) (base + 0x0080);
- dev->pci = (struct net2280_pci_regs *) (base + 0x0100);
- dev->dma = (struct net2280_dma_regs *) (base + 0x0180);
- dev->dep = (struct net2280_dep_regs *) (base + 0x0200);
- dev->epregs = (struct net2280_ep_regs *) (base + 0x0300);
+ dev->regs = (struct net2280_regs __iomem *) base;
+ dev->usb = (struct net2280_usb_regs __iomem *) (base + 0x0080);
+ dev->pci = (struct net2280_pci_regs __iomem *) (base + 0x0100);
+ dev->dma = (struct net2280_dma_regs __iomem *) (base + 0x0180);
+ dev->dep = (struct net2280_dep_regs __iomem *) (base + 0x0200);
+ dev->epregs = (struct net2280_ep_regs __iomem *) (base + 0x0300);
/* put into initial config, link up all endpoints */
+ writel (0, &dev->usb->usbctl);
usb_reset (dev);
usb_reinit (dev);
retval = -ENODEV;
goto done;
}
-#ifndef __sparc__
- scnprintf (buf, sizeof buf, "%d", pdev->irq);
- bufp = buf;
-#else
- bufp = __irq_itoa(pdev->irq);
-#endif
- if (request_irq (pdev->irq, net2280_irq, SA_SHIRQ, driver_name, dev)
+
+ if (request_irq (pdev->irq, net2280_irq, IRQF_SHARED, driver_name, dev)
!= 0) {
- ERROR (dev, "request interrupt %s failed\n", bufp);
+ ERROR (dev, "request interrupt %d failed\n", pdev->irq);
retval = -EBUSY;
goto done;
}
dev->got_irq = 1;
/* DMA setup */
+ /* NOTE: we know only the 32 LSBs of dma addresses may be nonzero */
dev->requests = pci_pool_create ("requests", pdev,
sizeof (struct net2280_dma),
0 /* no alignment requirements */,
dev->chiprev = get_idx_reg (dev->regs, REG_CHIPREV) & 0xffff;
/* done */
- pci_set_drvdata (pdev, dev);
INFO (dev, "%s\n", driver_desc);
- INFO (dev, "irq %s, pci mem %p, chip rev %04x\n",
- bufp, base, dev->chiprev);
+ INFO (dev, "irq %d, pci mem %p, chip rev %04x\n",
+ pdev->irq, base, dev->chiprev);
INFO (dev, "version: " DRIVER_VERSION "; dma %s\n",
use_dma
? (use_dma_chaining ? "chaining" : "enabled")
: "disabled");
the_controller = dev;
- device_register (&dev->gadget.dev);
- device_create_file (&pdev->dev, &dev_attr_registers);
+ retval = device_register (&dev->gadget.dev);
+ if (retval) goto done;
+ retval = device_create_file (&pdev->dev, &dev_attr_registers);
+ if (retval) goto done;
return 0;
return retval;
}
+/* make sure the board is quiescent; otherwise it will continue
+ * generating IRQs across the upcoming reboot.
+ */
+
+static void net2280_shutdown (struct pci_dev *pdev)
+{
+ struct net2280 *dev = pci_get_drvdata (pdev);
+
+ /* disable IRQs */
+ writel (0, &dev->regs->pciirqenb0);
+ writel (0, &dev->regs->pciirqenb1);
+
+ /* disable the pullup so the host will think we're gone */
+ writel (0, &dev->usb->usbctl);
+}
+
/*-------------------------------------------------------------------------*/
-static struct pci_device_id pci_ids [] = { {
- .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
- .class_mask = ~0,
+static const struct pci_device_id pci_ids [] = { {
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
+ .class_mask = ~0,
.vendor = 0x17cc,
.device = 0x2280,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+}, {
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
+ .class_mask = ~0,
+ .vendor = 0x17cc,
+ .device = 0x2282,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
}, { /* end: all zeroes */ }
};
.probe = net2280_probe,
.remove = net2280_remove,
+ .shutdown = net2280_shutdown,
/* FIXME add power management support */
};
{
if (!use_dma)
use_dma_chaining = 0;
- return pci_module_init (&net2280_pci_driver);
+ return pci_register_driver (&net2280_pci_driver);
}
module_init (init);
git://git.onelab.eu / linux-2.6.git / blobdiff