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Commit 1a569433 authored by Linus Torvalds's avatar Linus Torvalds
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Merge bk://kernel.bkbits.net/gregkh/linux/linus-2.5 

into penguin.transmeta.com:/home/torvalds/v2.5/linux
parents 47e4079c 85b55d6f
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Showing with 522 additions and 472 deletions
drivers/usb/core/message.c
View file @ 1a569433
......@@ -672,6 +672,7 @@ void usb_set_maxpacket(struct usb_device *dev)
{
int i, b;
/* NOTE: affects all endpoints _except_ ep0 */
for (i=0; i<dev->actconfig->desc.bNumInterfaces; i++) {
struct usb_interface *ifp = dev->actconfig->interface + i;
struct usb_host_interface *as = ifp->altsetting + ifp->act_altsetting;
......@@ -862,6 +863,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
usb_settoggle (dev, ep, out, 0);
(out ? dev->epmaxpacketout : dev->epmaxpacketin) [ep]
= iface_as->endpoint [i].desc.wMaxPacketSize;
usb_endpoint_running (dev, ep, out);
}
return 0;
......@@ -916,7 +918,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
/* if it's already configured, clear out old state first. */
if (dev->state != USB_STATE_ADDRESS && disable) {
for (i = 0; i < 15; i++) {
for (i = 1 /* skip ep0 */; i < 15; i++) {
disable (dev, i);
disable (dev, USB_DIR_IN | i);
}
......
drivers/usb/gadget/ether.c
View file @ 1a569433
......@@ -1107,7 +1107,7 @@ eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
}
/* respond with data transfer before status phase? */
if (value > 0) {
if (value >= 0) {
req->length = value;
value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
if (value < 0) {
......
drivers/usb/gadget/net2280.c
View file @ 1a569433
......@@ -393,7 +393,7 @@ net2280_free_request (struct usb_ep *_ep, struct usb_request *_req)
struct net2280_request *req;
ep = container_of (_ep, struct net2280_ep, ep);
if (!ep || !_req)
if (!_ep || !_req)
return;
req = container_of (_req, struct net2280_request, req);
......@@ -442,7 +442,7 @@ net2280_alloc_buffer (
struct net2280_ep *ep;
ep = container_of (_ep, struct net2280_ep, ep);
if (!ep || (!ep->desc && ep->num != 0))
if (!_ep || (!ep->desc && ep->num != 0))
return 0;
*dma = DMA_ADDR_INVALID;
......@@ -561,16 +561,12 @@ static void out_flush (struct net2280_ep *ep)
writel ((1 << FIFO_FLUSH), statp);
mb ();
tmp = readl (statp);
if (tmp & (1 << DATA_OUT_PING_TOKEN_INTERRUPT)) {
if (tmp & (1 << DATA_OUT_PING_TOKEN_INTERRUPT)
/* high speed did bulk NYET; fifo isn't filling */
&& ep->dev->gadget.speed == USB_SPEED_FULL) {
unsigned usec;
if (ep->dev->gadget.speed == USB_SPEED_HIGH) {
if (ep->ep.maxpacket <= 512)
usec = 10; /* 512 byte bulk */
else
usec = 21; /* 1024 byte interrupt */
} else
usec = 50; /* 64 byte bulk/interrupt */
usec = 50; /* 64 byte bulk/interrupt */
handshake (statp, (1 << USB_OUT_PING_NAK_SENT),
(1 << USB_OUT_PING_NAK_SENT), usec);
/* NAK done; now CLEAR_NAK_OUT_PACKETS is safe */
......@@ -614,15 +610,13 @@ read_fifo (struct net2280_ep *ep, struct net2280_request *req)
count = readl (&regs->ep_avail);
tmp = req->req.length - req->req.actual;
if (count > tmp) {
unsigned over = tmp % ep->ep.maxpacket;
/* FIXME handle this consistently between PIO and DMA */
if (over) {
/* as with DMA, data overflow gets flushed */
if ((tmp % ep->ep.maxpacket) != 0) {
ERROR (ep->dev,
"%s out fifo %d bytes, over %d extra %d\n",
ep->ep.name, count, over, count - tmp);
"%s out fifo %d bytes, expected %d\n",
ep->ep.name, count, tmp);
req->req.status = -EOVERFLOW;
tmp -= over;
cleanup = 1;
}
count = tmp;
}
......@@ -670,10 +664,12 @@ fill_dma_desc (struct net2280_ep *ep, struct net2280_request *req, int valid)
/* don't let DMA continue after a short OUT packet,
* so overruns can't affect the next transfer.
* in case of overruns on max-size packets, we can't
* stop the fifo from filling but we can flush it.
*/
if (ep->is_in)
dmacount |= (1 << DMA_DIRECTION);
else if ((dmacount % ep->ep.maxpacket) != 0)
else
dmacount |= (1 << END_OF_CHAIN);
req->valid = valid;
......@@ -897,8 +893,12 @@ net2280_queue (struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
start_dma (ep, req);
else {
/* maybe there's no control data, just status ack */
if (ep->num == 0 && _req->length == 0)
if (ep->num == 0 && _req->length == 0) {
allow_status (ep);
done (ep, req, 0);
VDEBUG (dev, "%s status ack\n", ep->ep.name);
goto done;
}
/* PIO ... stuff the fifo, or unblock it. */
if (ep->is_in)
......@@ -948,10 +948,9 @@ net2280_queue (struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
} /* else the irq handler advances the queue. */
if (req) {
done:
if (req)
list_add_tail (&req->queue, &ep->queue);
}
done:
spin_unlock_irqrestore (&dev->lock, flags);
/* pci writes may still be posted */
......@@ -992,6 +991,8 @@ static void scan_dma_completions (struct net2280_ep *ep)
/* SHORT_PACKET_TRANSFERRED_INTERRUPT handles "usb-short"
* packets, including overruns, even when the transfer was
* exactly the length requested (dmacount now zero).
* FIXME there's an overrun case here too, where we expect
* a short packet but receive a max length one (won't NAK).
*/
if (!ep->is_in && (req->req.length % ep->ep.maxpacket) != 0) {
req->dma_done = 1;
......@@ -1186,7 +1187,8 @@ net2280_set_halt (struct usb_ep *_ep, int value)
return -EINVAL;
if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
return -ESHUTDOWN;
if ((ep->desc->bmAttributes & 0x03) == USB_ENDPOINT_XFER_ISOC)
if (ep->desc /* not ep0 */ && (ep->desc->bmAttributes & 0x03)
== USB_ENDPOINT_XFER_ISOC)
return -EINVAL;
VDEBUG (ep->dev, "%s %s halt\n", _ep->name, value ? "set" : "clear");
......@@ -1712,7 +1714,7 @@ static void usb_reinit (struct net2280 *dev)
static void ep0_start (struct net2280 *dev)
{
writel ( (1 << SET_EP_HIDE_STATUS_PHASE)
writel ( (1 << CLEAR_EP_HIDE_STATUS_PHASE)
| (1 << CLEAR_NAK_OUT_PACKETS)
| (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
, &dev->epregs [0].ep_rsp);
......@@ -1916,22 +1918,27 @@ static void handle_ep_small (struct net2280_ep *ep)
if (ep->is_in) {
/* status; stop NAKing */
if (t & (1 << DATA_OUT_PING_TOKEN_INTERRUPT)) {
if (ep->dev->protocol_stall)
if (ep->dev->protocol_stall) {
ep->stopped = 1;
set_halt (ep);
}
mode = 2;
/* reply to extra IN tokens with a zlp */
/* reply to extra IN data tokens with a zlp */
} else if (t & (1 << DATA_IN_TOKEN_INTERRUPT)) {
if (ep->dev->protocol_stall) {
ep->stopped = 1;
set_halt (ep);
mode = 2;
} else if (!req)
} else if (!req && ep->stopped)
write_fifo (ep, 0);
}
} else {
/* status; stop NAKing */
if (t & (1 << DATA_IN_TOKEN_INTERRUPT)) {
if (ep->dev->protocol_stall)
if (ep->dev->protocol_stall) {
ep->stopped = 1;
set_halt (ep);
}
mode = 2;
/* an extra OUT token is an error */
} else if (((t & (1 << DATA_OUT_PING_TOKEN_INTERRUPT))
......@@ -2031,6 +2038,10 @@ static void handle_ep_small (struct net2280_ep *ep)
/* maybe advance queue to next request */
if (ep->num == 0) {
/* FIXME need mechanism (request flag?) so control OUT
* can decide to stall ep0 after that done() returns,
* from non-irq context
*/
allow_status (ep);
req = 0;
} else {
......@@ -2171,6 +2182,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
struct net2280_ep *e;
u16 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
......@@ -2188,12 +2200,14 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
set_fifo_bytecount (ep, u.r.wLength);
writel (status, &dev->epregs [0].ep_data);
allow_status (ep);
VDEBUG (dev, "%s stat %02x\n", ep->ep.name, status);
goto next_endpoints;
}
break;
case USB_REQ_CLEAR_FEATURE: {
struct net2280_ep *e;
/* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
if (u.r.wIndex != 0 /* HALT feature */
......@@ -2202,11 +2216,15 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
if ((e = get_ep_by_addr (dev, u.r.wIndex)) == 0)
goto do_stall;
clear_halt (e);
allow_status (ep);
VDEBUG (dev, "%s clear halt\n", ep->ep.name);
goto next_endpoints;
}
break;
case USB_REQ_SET_FEATURE: {
struct net2280_ep *e;
/* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate;
if (u.r.wIndex != 0 /* HALT feature */
......@@ -2215,6 +2233,9 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
if ((e = get_ep_by_addr (dev, u.r.wIndex)) == 0)
goto do_stall;
set_halt (e);
allow_status (ep);
VDEBUG (dev, "%s set halt\n", ep->ep.name);
goto next_endpoints;
}
break;
default:
......@@ -2235,23 +2256,12 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
VDEBUG (dev, "req %02x.%02x protocol STALL; stat %d\n",
u.r.bRequestType, u.r.bRequest, tmp);
dev->protocol_stall = 1;
/* when there's no data, queueing a response is optional */
} else if (list_empty (&ep->queue)) {
if (u.r.wLength == 0) {
/* done() not possible/requested */
allow_status (ep);
} else {
DEBUG (dev, "req %02x.%02x v%04x "
"gadget error, len %d, stat %d\n",
u.r.bRequestType, u.r.bRequest,
le16_to_cpu (u.r.wValue),
u.r.wLength, tmp);
dev->protocol_stall = 1;
}
}
/* some in/out token irq should follow; maybe stall then. */
/* some in/out token irq should follow; maybe stall then.
* driver must queue a request (even zlp) or halt ep0
* before the host times out.
*/
}
next_endpoints:
......
drivers/usb/gadget/net2280.h
View file @ 1a569433
......@@ -437,6 +437,8 @@ struct net2280_ep_regs { /* [11.9] */
/*-------------------------------------------------------------------------*/
#ifdef __KERNEL__
/* indexed registers [11.10] are accessed indirectly
* caller must own the device lock.
*/
......@@ -457,6 +459,9 @@ set_idx_reg (struct net2280_regs *regs, u32 index, u32 value)
/* posted, may not be visible yet */
}
#endif /* __KERNEL__ */
#define REG_DIAG 0x0
#define RETRY_COUNTER 16
#define FORCE_PCI_SERR 11
......@@ -471,6 +476,8 @@ set_idx_reg (struct net2280_regs *regs, u32 index, u32 value)
#define REG_CHIPREV 0x03 /* in bcd */
#define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */
#ifdef __KERNEL__
/* ep a-f highspeed and fullspeed maxpacket, addresses
* computed from ep->num
*/
......@@ -519,6 +526,7 @@ static inline void allow_status (struct net2280_ep *ep)
writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
| (1 << CLEAR_NAK_OUT_PACKETS_MODE)
, &ep->regs->ep_rsp);
ep->stopped = 1;
}
static inline void set_halt (struct net2280_ep *ep)
......@@ -707,3 +715,4 @@ static inline void stop_out_naking (struct net2280_ep *ep)
writel ((1 << CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
}
#endif /* __KERNEL__ */
drivers/usb/gadget/zero.c
View file @ 1a569433
......@@ -653,7 +653,7 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
/* this endpoint is normally active while we're configured */
case -ECONNRESET: /* request dequeued */
case -ESHUTDOWN: /* disconnect from host */
DEBUG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
VDEBUG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
req->actual, req->length);
free_ep_req (ep, req);
return;
......@@ -1035,9 +1035,6 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
if (ctrl->bRequestType != 0)
break;
spin_lock (&dev->lock);
/* change hardware configuration!
* no response queued, just zero status == success
*/
value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
spin_unlock (&dev->lock);
break;
......@@ -1092,7 +1089,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
}
/* respond with data transfer before status phase? */
if (value > 0) {
if (value >= 0) {
req->length = value;
value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
if (value < 0) {
......
drivers/usb/host/uhci-hcd.c
View file @ 1a569433
......@@ -61,7 +61,7 @@
/*
* Version Information
*/
#define DRIVER_VERSION "v2.0"
#define DRIVER_VERSION "v2.1"
#define DRIVER_AUTHOR "Linus 'Frodo Rabbit' Torvalds, Johannes Erdfelt, Randy Dunlap, Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber"
#define DRIVER_DESC "USB Universal Host Controller Interface driver"
......@@ -91,9 +91,7 @@ static int uhci_get_current_frame_number(struct uhci_hcd *uhci);
static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
static void uhci_unlink_generic(struct uhci_hcd *uhci, struct urb *urb);
static int ports_active(struct uhci_hcd *uhci);
static void suspend_hc(struct uhci_hcd *uhci);
static void wakeup_hc(struct uhci_hcd *uhci);
static void hc_state_transitions(struct uhci_hcd *uhci);
/* If a transfer is still active after this much time, turn off FSBR */
#define IDLE_TIMEOUT (HZ / 20) /* 50 ms */
......@@ -1757,9 +1755,8 @@ static void stall_callback(unsigned long ptr)
uhci->skel_term_qh->link = UHCI_PTR_TERM;
}
/* enter global suspend if nothing connected */
if (!uhci->is_suspended && !ports_active(uhci))
suspend_hc(uhci);
/* Poll for and perform state transitions */
hc_state_transitions(uhci);
init_stall_timer(hcd);
}
......@@ -1884,14 +1881,14 @@ static void uhci_irq(struct usb_hcd *hcd, struct pt_regs *regs)
err("%x: host system error, PCI problems?", io_addr);
if (status & USBSTS_HCPE)
err("%x: host controller process error. something bad happened", io_addr);
if ((status & USBSTS_HCH) && !uhci->is_suspended) {
if ((status & USBSTS_HCH) && uhci->state > 0) {
err("%x: host controller halted. very bad", io_addr);
/* FIXME: Reset the controller, fix the offending TD */
}
}
if (status & USBSTS_RD)
wakeup_hc(uhci);
uhci->resume_detect = 1;
uhci_free_pending_qhs(uhci);
......@@ -1922,10 +1919,18 @@ static void reset_hc(struct uhci_hcd *uhci)
unsigned int io_addr = uhci->io_addr;
/* Global reset for 50ms */
uhci->state = UHCI_RESET;
outw(USBCMD_GRESET, io_addr + USBCMD);
wait_ms(50);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((HZ*50+999) / 1000);
set_current_state(TASK_RUNNING);
outw(0, io_addr + USBCMD);
wait_ms(10);
/* Another 10ms delay */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((HZ*10+999) / 1000);
set_current_state(TASK_RUNNING);
uhci->resume_detect = 0;
}
static void suspend_hc(struct uhci_hcd *uhci)
......@@ -1933,34 +1938,49 @@ static void suspend_hc(struct uhci_hcd *uhci)
unsigned int io_addr = uhci->io_addr;
dbg("%x: suspend_hc", io_addr);
uhci->is_suspended = 1;
smp_wmb();
uhci->state = UHCI_SUSPENDED;
uhci->resume_detect = 0;
outw(USBCMD_EGSM, io_addr + USBCMD);
}
static void wakeup_hc(struct uhci_hcd *uhci)
{
unsigned int io_addr = uhci->io_addr;
unsigned int status;
dbg("%x: wakeup_hc", io_addr);
switch (uhci->state) {
case UHCI_SUSPENDED: /* Start the resume */
dbg("%x: wakeup_hc", io_addr);
/* Global resume for 20ms */
outw(USBCMD_FGR | USBCMD_EGSM, io_addr + USBCMD);
wait_ms(20);
outw(0, io_addr + USBCMD);
/* wait for EOP to be sent */
status = inw(io_addr + USBCMD);
while (status & USBCMD_FGR)
status = inw(io_addr + USBCMD);
/* Global resume for >= 20ms */
outw(USBCMD_FGR | USBCMD_EGSM, io_addr + USBCMD);
uhci->state = UHCI_RESUMING_1;
uhci->state_end = jiffies + (20*HZ+999) / 1000;
break;
uhci->is_suspended = 0;
case UHCI_RESUMING_1: /* End global resume */
uhci->state = UHCI_RESUMING_2;
outw(0, io_addr + USBCMD);
/* Falls through */
/* Run and mark it configured with a 64-byte max packet */
outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP, io_addr + USBCMD);
case UHCI_RESUMING_2: /* Wait for EOP to be sent */
if (inw(io_addr + USBCMD) & USBCMD_FGR)
break;
/* Run for at least 1 second, and
* mark it configured with a 64-byte max packet */
uhci->state = UHCI_RUNNING_GRACE;
uhci->state_end = jiffies + HZ;
outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP,
io_addr + USBCMD);
break;
case UHCI_RUNNING_GRACE: /* Now allowed to suspend */
uhci->state = UHCI_RUNNING;
break;
default:
break;
}
}
static int ports_active(struct uhci_hcd *uhci)
......@@ -1975,6 +1995,73 @@ static int ports_active(struct uhci_hcd *uhci)
return connection;
}
static int suspend_allowed(struct uhci_hcd *uhci)
{
unsigned int io_addr = uhci->io_addr;
int i;
if (!uhci->hcd.pdev ||
uhci->hcd.pdev->vendor != PCI_VENDOR_ID_INTEL ||
uhci->hcd.pdev->device != PCI_DEVICE_ID_INTEL_82371AB_2)
return 1;
/* This is a 82371AB/EB/MB USB controller which has a bug that
* causes false resume indications if any port has an
* over current condition. To prevent problems, we will not
* allow a global suspend if any ports are OC.
*
* Some motherboards using the 82371AB/EB/MB (but not the USB portion)
* appear to hardwire the over current inputs active to disable
* the USB ports.
*/
/* check for over current condition on any port */
for (i = 0; i < uhci->rh_numports; i++) {
if (inw(io_addr + USBPORTSC1 + i * 2) & USBPORTSC_OC)
return 0;
}
return 1;
}
static void hc_state_transitions(struct uhci_hcd *uhci)
{
switch (uhci->state) {
case UHCI_RUNNING:
/* global suspend if nothing connected for 1 second */
if (!ports_active(uhci) && suspend_allowed(uhci)) {
uhci->state = UHCI_SUSPENDING_GRACE;
uhci->state_end = jiffies + HZ;
}
break;
case UHCI_SUSPENDING_GRACE:
if (ports_active(uhci))
uhci->state = UHCI_RUNNING;
else if (time_after_eq(jiffies, uhci->state_end))
suspend_hc(uhci);
break;
case UHCI_SUSPENDED:
/* wakeup if requested by a device */
if (uhci->resume_detect)
wakeup_hc(uhci);
break;
case UHCI_RESUMING_1:
case UHCI_RESUMING_2:
case UHCI_RUNNING_GRACE:
if (time_after_eq(jiffies, uhci->state_end))
wakeup_hc(uhci);
break;
default:
break;
}
}
static void start_hc(struct uhci_hcd *uhci)
{
unsigned int io_addr = uhci->io_addr;
......@@ -2003,6 +2090,8 @@ static void start_hc(struct uhci_hcd *uhci)
outl(uhci->fl->dma_handle, io_addr + USBFLBASEADD);
/* Run and mark it configured with a 64-byte max packet */
uhci->state = UHCI_RUNNING_GRACE;
uhci->state_end = jiffies + HZ;
outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP, io_addr + USBCMD);
uhci->hcd.state = USB_STATE_READY;
......@@ -2101,8 +2190,6 @@ static int __devinit uhci_start(struct usb_hcd *hcd)
uhci->fsbr = 0;
uhci->fsbrtimeout = 0;
uhci->is_suspended = 0;
spin_lock_init(&uhci->qh_remove_list_lock);
INIT_LIST_HEAD(&uhci->qh_remove_list);
......@@ -2335,7 +2422,11 @@ static int uhci_suspend(struct usb_hcd *hcd, u32 state)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
suspend_hc(uhci);
/* Don't try to suspend broken motherboards, reset instead */
if (suspend_allowed(uhci))
suspend_hc(uhci);
else
reset_hc(uhci);
return 0;
}
......@@ -2345,8 +2436,13 @@ static int uhci_resume(struct usb_hcd *hcd)
pci_set_master(uhci->hcd.pdev);
reset_hc(uhci);
start_hc(uhci);
if (uhci->state == UHCI_SUSPENDED)
uhci->resume_detect = 1;
else {
reset_hc(uhci);
start_hc(uhci);
}
uhci->hcd.state = USB_STATE_READY;
return 0;
}
#endif
......
drivers/usb/host/uhci-hcd.h
View file @ 1a569433
......@@ -53,6 +53,7 @@
#define USBPORTSC_RD 0x0040 /* Resume Detect */
#define USBPORTSC_LSDA 0x0100 /* Low Speed Device Attached */
#define USBPORTSC_PR 0x0200 /* Port Reset */
#define USBPORTSC_OC 0x0400 /* Over Current condition */
#define USBPORTSC_SUSP 0x1000 /* Suspend */
/* Legacy support register */
......@@ -282,6 +283,29 @@ static inline int __interval_to_skel(int interval)
return 0; /* int128 for 128-255 ms (Max.) */
}
/*
* Device states for the host controller.
*
* To prevent "bouncing" in the presence of electrical noise,
* we insist on a 1-second "grace" period, before switching to
* the RUNNING or SUSPENDED states, during which the state is
* not allowed to change.
*
* The resume process is divided into substates in order to avoid
* potentially length delays during the timer handler.
*
* States in which the host controller is halted must have values <= 0.
*/
enum uhci_state {
UHCI_RESET,
UHCI_RUNNING_GRACE, /* Before RUNNING */
UHCI_RUNNING, /* The normal state */
UHCI_SUSPENDING_GRACE, /* Before SUSPENDED */
UHCI_SUSPENDED = -10, /* When no devices are attached */
UHCI_RESUMING_1,
UHCI_RESUMING_2
};
#define hcd_to_uhci(hcd_ptr) container_of(hcd_ptr, struct uhci_hcd, hcd)
/*
......@@ -313,7 +337,10 @@ struct uhci_hcd {
struct uhci_frame_list *fl; /* P: uhci->frame_list_lock */
int fsbr; /* Full speed bandwidth reclamation */
unsigned long fsbrtimeout; /* FSBR delay */
int is_suspended;
enum uhci_state state; /* FIXME: needs a spinlock */
unsigned long state_end; /* Time of next transition */
int resume_detect; /* Need a Global Resume */
/* Main list of URB's currently controlled by this HC */
spinlock_t urb_list_lock;
......
drivers/usb/misc/speedtch.c
View file @ 1a569433
/******************************************************************************
* speedtouch.c -- Alcatel SpeedTouch USB xDSL modem driver.
* speedtouch.c - Alcatel SpeedTouch USB xDSL modem driver
*
* Copyright (C) 2001, Alcatel
* Copyright (C) 2003, Duncan Sands
*
* 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
......@@ -40,7 +41,6 @@
* udsl_usb_send_data_context->urb to a pointer and adding code
* to alloc and free it
* - remove_wait_queue() added to udsl_atm_processqueue_thread()
* - Duncan Sands (duncan.sands@wanadoo.fr) is the new maintainer
*
* 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL.
* (reported by stephen.robinson@zen.co.uk)
......@@ -97,48 +97,65 @@ static int udsl_print_packet (const unsigned char *data, int len);
#define DRIVER_DESC "Alcatel SpeedTouch USB driver"
#define DRIVER_VERSION "1.6"
static const char udsl_driver_name [] = "speedtch";
#define SPEEDTOUCH_VENDORID 0x06b9
#define SPEEDTOUCH_PRODUCTID 0x4061
#define UDSL_NUMBER_RCV_URBS 1
#define UDSL_NUMBER_SND_URBS 1
#define UDSL_NUMBER_SND_BUFS (2*UDSL_NUMBER_SND_URBS)
#define UDSL_RCV_BUFFER_SIZE (1*64) /* ATM cells */
#define UDSL_SND_BUFFER_SIZE (1*64) /* ATM cells */
/* max should be (1500 IP mtu + 2 ppp bytes + 32 * 5 cellheader overhead) for
* PPPoA and (1500 + 14 + 32*5 cellheader overhead) for PPPoE */
#define UDSL_MAX_AAL5_MRU 2048
#define UDSL_IOCTL_START 1
#define UDSL_IOCTL_STOP 2
#define UDSL_NUM_RCV_URBS 1
#define UDSL_NUM_SND_URBS 1
#define UDSL_NUM_RCV_BUFS (2*UDSL_NUM_RCV_URBS)
#define UDSL_NUM_SND_BUFS (2*UDSL_NUM_SND_URBS)
#define UDSL_RCV_BUF_SIZE 32 /* ATM cells */
#define UDSL_SND_BUF_SIZE 64 /* ATM cells */
/* endpoint declarations */
#define UDSL_IOCTL_LINE_UP 1
#define UDSL_IOCTL_LINE_DOWN 2
#define UDSL_ENDPOINT_DATA_OUT 0x07
#define UDSL_ENDPOINT_DATA_IN 0x87
#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
#define UDSL_NUM_CELLS(x) (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD)
#define hex2int(c) ( (c >= '0')&&(c <= '9') ? (c - '0') : ((c & 0xf)+9) )
/* usb_device_id struct */
#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
static struct usb_device_id udsl_usb_ids [] = {
{ USB_DEVICE (SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID) },
{ } /* Terminating entry */
{ }
};
MODULE_DEVICE_TABLE (usb, udsl_usb_ids);
/* context declarations */
/* receive */
struct udsl_receive_buffer {
struct list_head list;
unsigned char *base;
unsigned int filled_cells;
};
struct udsl_receiver {
struct list_head list;
struct sk_buff *skb;
struct udsl_receive_buffer *buffer;
struct urb *urb;
struct udsl_instance_data *instance;
};
struct udsl_vcc_data {
/* vpi/vci lookup */
struct list_head list;
short vpi;
int vci;
struct atm_vcc *vcc;
/* raw cell reassembly */
struct sk_buff *skb;
unsigned int max_pdu;
};
/* send */
struct udsl_send_buffer {
struct list_head list;
unsigned char *base;
......@@ -157,73 +174,55 @@ struct udsl_control {
struct atm_skb_data atm_data;
unsigned int num_cells;
unsigned int num_entire;
unsigned char cell_header [ATM_CELL_HEADER];
unsigned int pdu_padding;
unsigned char cell_header [ATM_CELL_HEADER];
unsigned char aal5_trailer [ATM_AAL5_TRAILER];
};
#define UDSL_SKB(x) ((struct udsl_control *)(x)->cb)
struct udsl_vcc_data {
/* vpi/vci lookup */
struct list_head list;
short vpi;
int vci;
struct atm_vcc *vcc;
/* raw cell reassembly */
unsigned short mtu;
struct sk_buff *reasBuffer;
};
/*
* UDSL main driver data
*/
/* main driver data */
struct udsl_instance_data {
struct semaphore serialize;
/* usb device part */
/* USB device part */
struct usb_device *usb_dev;
char description [64];
int firmware_loaded;
/* atm device part */
/* ATM device part */
struct atm_dev *atm_dev;
struct list_head vcc_list;
/* receiving */
struct udsl_receiver all_receivers [UDSL_NUMBER_RCV_URBS];
/* receive */
struct udsl_receiver receivers [UDSL_NUM_RCV_URBS];
struct udsl_receive_buffer receive_buffers [UDSL_NUM_RCV_BUFS];
spinlock_t spare_receivers_lock;
spinlock_t receive_lock;
struct list_head spare_receivers;
spinlock_t completed_receivers_lock;
struct list_head completed_receivers;
struct list_head filled_receive_buffers;
struct tasklet_struct receive_tasklet;
struct list_head spare_receive_buffers;
/* sending */
struct udsl_sender all_senders [UDSL_NUMBER_SND_URBS];
struct udsl_send_buffer all_buffers [UDSL_NUMBER_SND_BUFS];
/* send */
struct udsl_sender senders [UDSL_NUM_SND_URBS];
struct udsl_send_buffer send_buffers [UDSL_NUM_SND_BUFS];
struct sk_buff_head sndqueue;
spinlock_t send_lock;
struct list_head spare_senders;
struct list_head spare_buffers;
struct list_head spare_send_buffers;
struct tasklet_struct send_tasklet;
struct sk_buff *current_skb; /* being emptied */
struct udsl_send_buffer *current_buffer; /* being filled */
struct list_head filled_buffers;
struct list_head filled_send_buffers;
};
static const char udsl_driver_name [] = "speedtch";
/*
* atm driver prototypes and structures
*/
/* ATM */
static void udsl_atm_dev_close (struct atm_dev *dev);
static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci);
......@@ -239,17 +238,17 @@ static struct atmdev_ops udsl_atm_devops = {
.ioctl = udsl_atm_ioctl,
.send = udsl_atm_send,
.proc_read = udsl_atm_proc_read,
.owner = THIS_MODULE,
};
/*
* usb driver prototypes and structures
*/
static int udsl_usb_probe (struct usb_interface *intf,
const struct usb_device_id *id);
/* USB */
static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_id *id);
static void udsl_usb_disconnect (struct usb_interface *intf);
static int udsl_usb_ioctl (struct usb_interface *intf, unsigned int code, void *user_data);
static struct usb_driver udsl_usb_driver = {
.owner = THIS_MODULE,
.name = udsl_driver_name,
.probe = udsl_usb_probe,
.disconnect = udsl_usb_disconnect,
......@@ -272,133 +271,110 @@ static inline struct udsl_vcc_data *udsl_find_vcc (struct udsl_instance_data *in
return NULL;
}
static struct sk_buff *udsl_decode_rawcell (struct udsl_instance_data *instance, struct sk_buff *skb, struct udsl_vcc_data **ctx)
static void udsl_extract_cells (struct udsl_instance_data *instance, unsigned char *source, unsigned int howmany)
{
if (!instance || !skb || !ctx)
return NULL;
if (!skb->data || !skb->tail)
return NULL;
struct udsl_vcc_data *cached_vcc = NULL;
struct atm_vcc *vcc;
struct sk_buff *skb;
struct udsl_vcc_data *vcc_data;
int cached_vci = 0;
unsigned int i;
unsigned int length;
unsigned int pdu_length;
int pti;
int vci;
short cached_vpi = 0;
short vpi;
while (skb->len) {
unsigned char *cell = skb->data;
unsigned char *cell_payload;
struct udsl_vcc_data *vcc;
short vpi;
int vci;
for (i = 0; i < howmany; i++, source += ATM_CELL_SIZE) {
vpi = ((source [0] & 0x0f) << 4) | (source [1] >> 4);
vci = ((source [1] & 0x0f) << 12) | (source [2] << 4) | (source [3] >> 4);
pti = (source [3] & 0x2) != 0;
vpi = ((cell[0] & 0x0f) << 4) | (cell[1] >> 4);
vci = ((cell[1] & 0x0f) << 12) | (cell[2] << 4) | (cell[3] >> 4);
vdbg ("udsl_extract_cells: vpi %hd, vci %d, pti %d", vpi, vci, pti);
vdbg ("udsl_decode_rawcell (0x%p, 0x%p, 0x%p) called", instance, skb, ctx);
vdbg ("udsl_decode_rawcell skb->data %p, skb->tail %p", skb->data, skb->tail);
if (cached_vcc && (vci == cached_vci) && (vpi == cached_vpi))
vcc_data = cached_vcc;
else if ((vcc_data = udsl_find_vcc (instance, vpi, vci))) {
cached_vcc = vcc_data;
cached_vpi = vpi;
cached_vci = vci;
} else {
dbg ("udsl_extract_cells: unknown vpi/vci (%hd/%d)!", vpi, vci);
continue;
}
/* here should the header CRC check be... */
vcc = vcc_data->vcc;
if (!(vcc = udsl_find_vcc (instance, vpi, vci))) {
dbg ("udsl_decode_rawcell: no vcc found for packet on vpi %d, vci %d", vpi, vci);
__skb_pull (skb, min (skb->len, (unsigned) 53));
} else {
vdbg ("udsl_decode_rawcell found vcc %p for packet on vpi %d, vci %d", vcc, vpi, vci);
if (skb->len >= 53) {
cell_payload = cell + 5;
if (!vcc->reasBuffer)
vcc->reasBuffer = dev_alloc_skb (vcc->mtu);
/* if alloc fails, we just drop the cell. it is possible that we can still
* receive cells on other vcc's
*/
if (vcc->reasBuffer) {
/* if (buffer overrun) discard received cells until now */
if ((vcc->reasBuffer->len) > (vcc->mtu - 48))
skb_trim (vcc->reasBuffer, 0);
/* copy data */
memcpy (vcc->reasBuffer->tail, cell_payload, 48);
skb_put (vcc->reasBuffer, 48);
/* check for end of buffer */
if (cell[3] & 0x2) {
struct sk_buff *tmp;
/* the aal5 buffer ends here, cut the buffer. */
/* buffer will always have at least one whole cell, so */
/* don't need to check return from skb_pull */
skb_pull (skb, 53);
*ctx = vcc;
tmp = vcc->reasBuffer;
vcc->reasBuffer = NULL;
vdbg ("udsl_decode_rawcell returns ATM_AAL5 pdu 0x%p with length %d", tmp, tmp->len);
return tmp;
}
}
/* flush the cell */
/* buffer will always contain at least one whole cell, so don't */
/* need to check return value from skb_pull */
skb_pull (skb, 53);
} else {
/* If data is corrupt and skb doesn't hold a whole cell, flush the lot */
__skb_pull (skb, skb->len);
return NULL;
}
if (!vcc_data->skb && !(vcc_data->skb = dev_alloc_skb (vcc_data->max_pdu))) {
dbg ("udsl_extract_cells: no memory for skb (vcc: 0x%p)!", vcc);
if (pti)
atomic_inc (&vcc->stats->rx_err);
continue;
}
}
return NULL;
}
skb = vcc_data->skb;
static struct sk_buff *udsl_decode_aal5 (struct udsl_vcc_data *ctx, struct sk_buff *skb)
{
uint crc = 0xffffffff;
uint length, pdu_crc, pdu_length;
if (skb->len + ATM_CELL_PAYLOAD > vcc_data->max_pdu) {
dbg ("udsl_extract_cells: buffer overrun (max_pdu: %u, skb->len %u, vcc: 0x%p)", vcc_data->max_pdu, skb->len, vcc);
/* discard cells already received */
skb_trim (skb, 0);
BUG_ON (vcc_data->max_pdu < ATM_CELL_PAYLOAD);
}
vdbg ("udsl_decode_aal5 (0x%p, 0x%p) called", ctx, skb);
memcpy (skb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
__skb_put (skb, ATM_CELL_PAYLOAD);
if (skb->len && (skb->len % 48))
return NULL;
if (pti) {
length = (source [ATM_CELL_SIZE - 6] << 8) + source [ATM_CELL_SIZE - 5];
length = (skb->tail[-6] << 8) + skb->tail[-5];
pdu_crc =
(skb->tail[-4] << 24) + (skb->tail[-3] << 16) + (skb->tail[-2] << 8) + skb->tail[-1];
pdu_length = ((length + 47 + 8) / 48) * 48;
/* guard against overflow */
if (length > ATM_MAX_AAL5_PDU) {
dbg ("udsl_extract_cells: bogus length %u (vcc: 0x%p)", length, vcc);
goto drop;
}
vdbg ("udsl_decode_aal5: skb->len = %d, length = %d, pdu_crc = 0x%x, pdu_length = %d", skb->len, length, pdu_crc, pdu_length);
pdu_length = UDSL_NUM_CELLS (length) * ATM_CELL_PAYLOAD;
/* is skb long enough ? */
if (skb->len < pdu_length) {
atomic_inc (&ctx->vcc->stats->rx_err);
return NULL;
}
if (skb->len < pdu_length) {
dbg ("udsl_extract_cells: bogus pdu_length %u (skb->len: %u, vcc: 0x%p)", pdu_length, skb->len, vcc);
goto drop;
}
/* is skb too long ? */
if (skb->len > pdu_length) {
dbg ("udsl_decode_aal5: Warning: readjusting illegal size %d -> %d", skb->len, pdu_length);
/* buffer is too long. we can try to recover
* if we discard the first part of the skb.
* the crc will decide whether this was ok
*/
skb_pull (skb, skb->len - pdu_length);
}
if (crc32_be (~0, skb->tail - pdu_length, pdu_length) != 0xc704dd7b) {
dbg ("udsl_extract_cells: packet failed crc check (vcc: 0x%p)", vcc);
goto drop;
}
crc = ~crc32_be (crc, skb->data, pdu_length - 4);
if (!atm_charge (vcc, skb->truesize)) {
dbg ("udsl_extract_cells: failed atm_charge (skb->truesize: %u)", skb->truesize);
goto drop_no_stats; /* atm_charge increments rx_drop */
}
/* check crc */
if (pdu_crc != crc) {
dbg ("udsl_decode_aal5: crc check failed!");
atomic_inc (&ctx->vcc->stats->rx_err);
return NULL;
}
/* now that we are sure to send the skb, it is ok to change skb->data */
if (skb->len > pdu_length)
skb_pull (skb, skb->len - pdu_length); /* discard initial junk */
/* pdu is ok */
skb_trim (skb, length);
skb_trim (skb, length); /* drop zero padding and trailer */
/* update stats */
atomic_inc (&ctx->vcc->stats->rx);
atomic_inc (&vcc->stats->rx);
vdbg ("udsl_decode_aal5 returns pdu 0x%p with length %d", skb, skb->len);
return skb;
PACKETDEBUG (skb->data, skb->len);
vdbg ("udsl_extract_cells: sending skb 0x%p, skb->len %u, skb->truesize %u", skb, skb->len, skb->truesize);
vcc->push (vcc, skb);
vcc_data->skb = NULL;
continue;
drop:
atomic_inc (&vcc->stats->rx_err);
drop_no_stats:
skb_trim (skb, 0);
}
}
}
......@@ -406,7 +382,7 @@ static struct sk_buff *udsl_decode_aal5 (struct udsl_vcc_data *ctx, struct sk_bu
** encode **
*************/
static const unsigned char zeros[ATM_CELL_PAYLOAD];
static const unsigned char zeros [ATM_CELL_PAYLOAD];
static void udsl_groom_skb (struct atm_vcc *vcc, struct sk_buff *skb)
{
......@@ -421,7 +397,7 @@ static void udsl_groom_skb (struct atm_vcc *vcc, struct sk_buff *skb)
ctrl->cell_header [3] = vcc->vci << 4;
ctrl->cell_header [4] = 0xec;
ctrl->num_cells = (skb->len + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD;
ctrl->num_cells = UDSL_NUM_CELLS (skb->len);
ctrl->num_entire = skb->len / ATM_CELL_PAYLOAD;
zero_padding = ctrl->num_cells * ATM_CELL_PAYLOAD - skb->len - ATM_AAL5_TRAILER;
......@@ -490,8 +466,7 @@ static unsigned int udsl_write_cells (unsigned int howmany, struct sk_buff *skb,
memset (target, 0, ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER);
target += ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
if (--ctrl->num_cells)
BUG();
BUG_ON (--ctrl->num_cells);
}
memcpy (target, ctrl->aal5_trailer, ATM_AAL5_TRAILER);
......@@ -511,145 +486,89 @@ static unsigned int udsl_write_cells (unsigned int howmany, struct sk_buff *skb,
static void udsl_complete_receive (struct urb *urb, struct pt_regs *regs)
{
struct udsl_receive_buffer *buf;
struct udsl_instance_data *instance;
struct udsl_receiver *rcv;
unsigned long flags;
if (!urb || !(rcv = urb->context) || !(instance = rcv->instance)) {
if (!urb || !(rcv = urb->context)) {
dbg ("udsl_complete_receive: bad urb!");
return;
}
vdbg ("udsl_complete_receive entered (urb 0x%p, status %d)", urb, urb->status);
instance = rcv->instance;
buf = rcv->buffer;
buf->filled_cells = urb->actual_length / ATM_CELL_SIZE;
vdbg ("udsl_complete_receive: urb 0x%p, status %d, actual_length %d, filled_cells %u, rcv 0x%p, buf 0x%p", urb, urb->status, urb->actual_length, buf->filled_cells, rcv, buf);
BUG_ON (buf->filled_cells > UDSL_RCV_BUF_SIZE);
/* may not be in_interrupt() */
spin_lock_irqsave (&instance->completed_receivers_lock, flags);
list_add_tail (&rcv->list, &instance->completed_receivers);
tasklet_schedule (&instance->receive_tasklet);
spin_unlock_irqrestore (&instance->completed_receivers_lock, flags);
spin_lock_irqsave (&instance->receive_lock, flags);
list_add (&rcv->list, &instance->spare_receivers);
list_add_tail (&buf->list, &instance->filled_receive_buffers);
if (likely (!urb->status))
tasklet_schedule (&instance->receive_tasklet);
spin_unlock_irqrestore (&instance->receive_lock, flags);
}
static void udsl_process_receive (unsigned long data)
{
struct udsl_receive_buffer *buf;
struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
struct udsl_receiver *rcv;
unsigned char *data_start;
struct sk_buff *skb;
struct urb *urb;
struct udsl_vcc_data *atmsar_vcc = NULL;
struct sk_buff *new = NULL, *tmp = NULL;
int err;
vdbg ("udsl_process_receive entered");
spin_lock_irq (&instance->completed_receivers_lock);
while (!list_empty (&instance->completed_receivers)) {
rcv = list_entry (instance->completed_receivers.next, struct udsl_receiver, list);
list_del (&rcv->list);
spin_unlock_irq (&instance->completed_receivers_lock);
urb = rcv->urb;
vdbg ("udsl_process_receive: got packet %p with length %d and status %d", urb, urb->actual_length, urb->status);
switch (urb->status) {
case 0:
vdbg ("udsl_process_receive: processing urb with rcv %p, urb %p, skb %p", rcv, urb, rcv->skb);
/* update the skb structure */
skb = rcv->skb;
skb_trim (skb, 0);
skb_put (skb, urb->actual_length);
data_start = skb->data;
vdbg ("skb->len = %d", skb->len);
PACKETDEBUG (skb->data, skb->len);
while ((new = udsl_decode_rawcell (instance, skb, &atmsar_vcc))) {
vdbg ("(after cell processing)skb->len = %d", new->len);
tmp = new;
new = udsl_decode_aal5 (atmsar_vcc, new);
/* we can't send NULL skbs upstream, the ATM layer would try to close the vcc... */
if (new) {
vdbg ("(after aal5 decap) skb->len = %d", new->len);
if (new->len && atm_charge (atmsar_vcc->vcc, new->truesize)) {
PACKETDEBUG (new->data, new->len);
atmsar_vcc->vcc->push (atmsar_vcc->vcc, new);
} else {
dbg
("dropping incoming packet : vcc->sk->rcvbuf = %d, skb->true_size = %d",
atmsar_vcc->vcc->sk->rcvbuf, new->truesize);
dev_kfree_skb (new);
}
} else {
dbg ("udsl_decode_aal5 returned NULL!");
dev_kfree_skb (tmp);
}
}
/* restore skb */
skb_push (skb, skb->data - data_start);
usb_fill_bulk_urb (urb,
instance->usb_dev,
usb_rcvbulkpipe (instance->usb_dev, UDSL_ENDPOINT_DATA_IN),
(unsigned char *) rcv->skb->data,
UDSL_RCV_BUFFER_SIZE * ATM_CELL_SIZE,
udsl_complete_receive,
rcv);
if (!(err = usb_submit_urb (urb, GFP_ATOMIC)))
break;
dbg ("udsl_process_receive: submission failed (%d)", err);
/* fall through */
default: /* error or urb unlinked */
vdbg ("udsl_process_receive: adding to spare_receivers");
spin_lock_irq (&instance->spare_receivers_lock);
list_add (&rcv->list, &instance->spare_receivers);
spin_unlock_irq (&instance->spare_receivers_lock);
made_progress:
while (!list_empty (&instance->spare_receive_buffers)) {
spin_lock_irq (&instance->receive_lock);
if (list_empty (&instance->spare_receivers)) {
spin_unlock_irq (&instance->receive_lock);
break;
} /* switch */
spin_lock_irq (&instance->completed_receivers_lock);
} /* while */
spin_unlock_irq (&instance->completed_receivers_lock);
vdbg ("udsl_process_receive successful");
}
static void udsl_fire_receivers (struct udsl_instance_data *instance)
{
struct list_head receivers, *pos, *n;
INIT_LIST_HEAD (&receivers);
down (&instance->serialize);
spin_lock_irq (&instance->spare_receivers_lock);
list_splice_init (&instance->spare_receivers, &receivers);
spin_unlock_irq (&instance->spare_receivers_lock);
}
rcv = list_entry (instance->spare_receivers.next, struct udsl_receiver, list);
list_del (&rcv->list);
spin_unlock_irq (&instance->receive_lock);
list_for_each_safe (pos, n, &receivers) {
struct udsl_receiver *rcv = list_entry (pos, struct udsl_receiver, list);
buf = list_entry (instance->spare_receive_buffers.next, struct udsl_receive_buffer, list);
list_del (&buf->list);
dbg ("udsl_fire_receivers: firing urb %p", rcv->urb);
rcv->buffer = buf;
usb_fill_bulk_urb (rcv->urb,
instance->usb_dev,
usb_rcvbulkpipe (instance->usb_dev, UDSL_ENDPOINT_DATA_IN),
(unsigned char *) rcv->skb->data,
UDSL_RCV_BUFFER_SIZE * ATM_CELL_SIZE,
buf->base,
UDSL_RCV_BUF_SIZE * ATM_CELL_SIZE,
udsl_complete_receive,
rcv);
if (usb_submit_urb (rcv->urb, GFP_KERNEL) < 0) {
dbg ("udsl_fire_receivers: submit failed!");
spin_lock_irq (&instance->spare_receivers_lock);
list_move (pos, &instance->spare_receivers);
spin_unlock_irq (&instance->spare_receivers_lock);
vdbg ("udsl_process_receive: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf);
if ((err = usb_submit_urb(rcv->urb, GFP_ATOMIC)) < 0) {
dbg ("udsl_process_receive: urb submission failed (%d)!", err);
list_add (&buf->list, &instance->spare_receive_buffers);
spin_lock_irq (&instance->receive_lock);
list_add (&rcv->list, &instance->spare_receivers);
spin_unlock_irq (&instance->receive_lock);
break;
}
}
up (&instance->serialize);
spin_lock_irq (&instance->receive_lock);
if (list_empty (&instance->filled_receive_buffers)) {
spin_unlock_irq (&instance->receive_lock);
return; /* done - no more buffers */
}
buf = list_entry (instance->filled_receive_buffers.next, struct udsl_receive_buffer, list);
list_del (&buf->list);
spin_unlock_irq (&instance->receive_lock);
vdbg ("udsl_process_receive: processing buf 0x%p", buf);
udsl_extract_cells (instance, buf->base, buf->filled_cells);
list_add (&buf->list, &instance->spare_receive_buffers);
goto made_progress;
}
......@@ -673,7 +592,7 @@ static void udsl_complete_send (struct urb *urb, struct pt_regs *regs)
/* may not be in_interrupt() */
spin_lock_irqsave (&instance->send_lock, flags);
list_add (&snd->list, &instance->spare_senders);
list_add (&snd->buffer->list, &instance->spare_buffers);
list_add (&snd->buffer->list, &instance->spare_send_buffers);
tasklet_schedule (&instance->send_tasklet);
spin_unlock_irqrestore (&instance->send_lock, flags);
}
......@@ -681,17 +600,17 @@ static void udsl_complete_send (struct urb *urb, struct pt_regs *regs)
static void udsl_process_send (unsigned long data)
{
struct udsl_send_buffer *buf;
int err;
struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
unsigned int num_written;
struct sk_buff *skb;
struct udsl_sender *snd;
int err;
unsigned int num_written;
made_progress:
spin_lock_irq (&instance->send_lock);
while (!list_empty (&instance->spare_senders)) {
if (!list_empty (&instance->filled_buffers)) {
buf = list_entry (instance->filled_buffers.next, struct udsl_send_buffer, list);
if (!list_empty (&instance->filled_send_buffers)) {
buf = list_entry (instance->filled_send_buffers.next, struct udsl_send_buffer, list);
list_del (&buf->list);
} else if ((buf = instance->current_buffer)) {
instance->current_buffer = NULL;
......@@ -707,7 +626,7 @@ static void udsl_process_send (unsigned long data)
instance->usb_dev,
usb_sndbulkpipe (instance->usb_dev, UDSL_ENDPOINT_DATA_OUT),
buf->base,
(UDSL_SND_BUFFER_SIZE - buf->free_cells) * ATM_CELL_SIZE,
(UDSL_SND_BUF_SIZE - buf->free_cells) * ATM_CELL_SIZE,
udsl_complete_send,
snd);
......@@ -718,33 +637,32 @@ static void udsl_process_send (unsigned long data)
spin_lock_irq (&instance->send_lock);
list_add (&snd->list, &instance->spare_senders);
spin_unlock_irq (&instance->send_lock);
list_add (&buf->list, &instance->filled_buffers);
return;
list_add (&buf->list, &instance->filled_send_buffers);
return; /* bail out */
}
spin_lock_irq (&instance->send_lock);
} /* while */
spin_unlock_irq (&instance->send_lock);
if (!instance->current_skb && !(instance->current_skb = skb_dequeue (&instance->sndqueue))) {
if (!instance->current_skb && !(instance->current_skb = skb_dequeue (&instance->sndqueue)))
return; /* done - no more skbs */
}
skb = instance->current_skb;
if (!(buf = instance->current_buffer)) {
spin_lock_irq (&instance->send_lock);
if (list_empty (&instance->spare_buffers)) {
if (list_empty (&instance->spare_send_buffers)) {
instance->current_buffer = NULL;
spin_unlock_irq (&instance->send_lock);
return; /* done - no more buffers */
}
buf = list_entry (instance->spare_buffers.next, struct udsl_send_buffer, list);
buf = list_entry (instance->spare_send_buffers.next, struct udsl_send_buffer, list);
list_del (&buf->list);
spin_unlock_irq (&instance->send_lock);
buf->free_start = buf->base;
buf->free_cells = UDSL_SND_BUFFER_SIZE;
buf->free_cells = UDSL_SND_BUF_SIZE;
instance->current_buffer = buf;
}
......@@ -754,7 +672,7 @@ static void udsl_process_send (unsigned long data)
vdbg ("udsl_process_send: wrote %u cells from skb 0x%p to buffer 0x%p", num_written, skb, buf);
if (!(buf->free_cells -= num_written)) {
list_add_tail (&buf->list, &instance->filled_buffers);
list_add_tail (&buf->list, &instance->filled_send_buffers);
instance->current_buffer = NULL;
}
......@@ -766,7 +684,7 @@ static void udsl_process_send (unsigned long data)
if (vcc->pop)
vcc->pop (vcc, skb);
else
kfree_skb (skb);
dev_kfree_skb (skb);
instance->current_skb = NULL;
atomic_inc (&vcc->stats->tx);
......@@ -788,7 +706,7 @@ static void udsl_cancel_send (struct udsl_instance_data *instance, struct atm_vc
if (vcc->pop)
vcc->pop (vcc, skb);
else
kfree_skb (skb);
dev_kfree_skb (skb);
}
spin_unlock_irq (&instance->sndqueue.lock);
......@@ -799,7 +717,7 @@ static void udsl_cancel_send (struct udsl_instance_data *instance, struct atm_vc
if (vcc->pop)
vcc->pop (vcc, skb);
else
kfree_skb (skb);
dev_kfree_skb (skb);
}
tasklet_enable (&instance->send_tasklet);
dbg ("udsl_cancel_send done");
......@@ -851,6 +769,7 @@ static void udsl_atm_dev_close (struct atm_dev *dev)
dbg ("udsl_atm_dev_close: queue has %u elements", instance->sndqueue.qlen);
tasklet_kill (&instance->receive_tasklet);
tasklet_kill (&instance->send_tasklet);
kfree (instance);
dev->dev_data = NULL;
......@@ -871,8 +790,8 @@ static int udsl_atm_proc_read (struct atm_dev *atm_dev, loff_t *pos, char *page)
if (!left--)
return sprintf (page, "MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
atm_dev->esi[0], atm_dev->esi[1], atm_dev->esi[2],
atm_dev->esi[3], atm_dev->esi[4], atm_dev->esi[5]);
atm_dev->esi [0], atm_dev->esi [1], atm_dev->esi [2],
atm_dev->esi [3], atm_dev->esi [4], atm_dev->esi [5]);
if (!left--)
return sprintf (page, "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n",
......@@ -925,7 +844,7 @@ static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
return -EINVAL;
/* only support AAL5 */
if (vcc->qos.aal != ATM_AAL5)
if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0) || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU))
return -EINVAL;
if (!instance->firmware_loaded) {
......@@ -949,7 +868,7 @@ static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
new->vcc = vcc;
new->vpi = vpi;
new->vci = vci;
new->mtu = UDSL_MAX_AAL5_MRU;
new->max_pdu = max (1, UDSL_NUM_CELLS (vcc->qos.rxtp.max_sdu)) * ATM_CELL_PAYLOAD;
vcc->dev_data = new;
vcc->vpi = vpi;
......@@ -965,7 +884,7 @@ static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
up (&instance->serialize);
udsl_fire_receivers (instance);
tasklet_schedule (&instance->receive_tasklet);
dbg ("udsl_atm_open: allocated vcc data 0x%p (max_pdu: %u)", new, new->max_pdu);
......@@ -994,9 +913,9 @@ static void udsl_atm_close (struct atm_vcc *vcc)
list_del (&vcc_data->list);
tasklet_enable (&instance->receive_tasklet);
if (vcc_data->reasBuffer)
kfree_skb (vcc_data->reasBuffer);
vcc_data->reasBuffer = NULL;
if (vcc_data->skb)
dev_kfree_skb (vcc_data->skb);
vcc_data->skb = NULL;
kfree (vcc_data);
vcc->dev_data = NULL;
......@@ -1041,7 +960,9 @@ static int udsl_set_alternate (struct udsl_instance_data *instance)
instance->firmware_loaded = 1;
}
up (&instance->serialize);
udsl_fire_receivers (instance);
tasklet_schedule (&instance->receive_tasklet);
return 0;
}
......@@ -1057,10 +978,10 @@ static int udsl_usb_ioctl (struct usb_interface *intf, unsigned int code, void *
}
switch (code) {
case UDSL_IOCTL_START:
case UDSL_IOCTL_LINE_UP:
instance->atm_dev->signal = ATM_PHY_SIG_FOUND;
return udsl_set_alternate (instance);
case UDSL_IOCTL_STOP:
case UDSL_IOCTL_LINE_DOWN:
instance->atm_dev->signal = ATM_PHY_SIG_LOST;
return 0;
default:
......@@ -1101,31 +1022,25 @@ static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_i
INIT_LIST_HEAD (&instance->vcc_list);
spin_lock_init (&instance->spare_receivers_lock);
spin_lock_init (&instance->receive_lock);
INIT_LIST_HEAD (&instance->spare_receivers);
spin_lock_init (&instance->completed_receivers_lock);
INIT_LIST_HEAD (&instance->completed_receivers);
INIT_LIST_HEAD (&instance->filled_receive_buffers);
tasklet_init (&instance->receive_tasklet, udsl_process_receive, (unsigned long) instance);
INIT_LIST_HEAD (&instance->spare_receive_buffers);
skb_queue_head_init (&instance->sndqueue);
spin_lock_init (&instance->send_lock);
INIT_LIST_HEAD (&instance->spare_senders);
INIT_LIST_HEAD (&instance->spare_buffers);
INIT_LIST_HEAD (&instance->spare_send_buffers);
tasklet_init (&instance->send_tasklet, udsl_process_send, (unsigned long) instance);
INIT_LIST_HEAD (&instance->filled_buffers);
INIT_LIST_HEAD (&instance->filled_send_buffers);
/* receive init */
for (i = 0; i < UDSL_NUMBER_RCV_URBS; i++) {
struct udsl_receiver *rcv = &(instance->all_receivers[i]);
if (!(rcv->skb = dev_alloc_skb (UDSL_RCV_BUFFER_SIZE * ATM_CELL_SIZE))) {
dbg ("udsl_usb_probe: no memory for skb %d!", i);
goto fail;
}
for (i = 0; i < UDSL_NUM_RCV_URBS; i++) {
struct udsl_receiver *rcv = &(instance->receivers [i]);
if (!(rcv->urb = usb_alloc_urb (0, GFP_KERNEL))) {
dbg ("udsl_usb_probe: no memory for receive urb %d!", i);
......@@ -1135,13 +1050,22 @@ static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_i
rcv->instance = instance;
list_add (&rcv->list, &instance->spare_receivers);
}
for (i = 0; i < UDSL_NUM_RCV_BUFS; i++) {
struct udsl_receive_buffer *buf = &(instance->receive_buffers [i]);
if (!(buf->base = kmalloc (UDSL_RCV_BUF_SIZE * ATM_CELL_SIZE, GFP_KERNEL))) {
dbg ("udsl_usb_probe: no memory for receive buffer %d!", i);
goto fail;
}
dbg ("udsl_usb_probe: skb->truesize = %d (asked for %d)", rcv->skb->truesize, UDSL_RCV_BUF_SIZE * ATM_CELL_SIZE);
list_add (&buf->list, &instance->spare_receive_buffers);
}
/* send init */
for (i = 0; i < UDSL_NUMBER_SND_URBS; i++) {
struct udsl_sender *snd = &(instance->all_senders[i]);
for (i = 0; i < UDSL_NUM_SND_URBS; i++) {
struct udsl_sender *snd = &(instance->senders [i]);
if (!(snd->urb = usb_alloc_urb (0, GFP_KERNEL))) {
dbg ("udsl_usb_probe: no memory for send urb %d!", i);
......@@ -1153,18 +1077,18 @@ static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_i
list_add (&snd->list, &instance->spare_senders);
}
for (i = 0; i < UDSL_NUMBER_SND_BUFS; i++) {
struct udsl_send_buffer *buf = &(instance->all_buffers[i]);
for (i = 0; i < UDSL_NUM_SND_BUFS; i++) {
struct udsl_send_buffer *buf = &(instance->send_buffers [i]);
if (!(buf->base = kmalloc (UDSL_SND_BUFFER_SIZE * ATM_CELL_SIZE, GFP_KERNEL))) {
if (!(buf->base = kmalloc (UDSL_SND_BUF_SIZE * ATM_CELL_SIZE, GFP_KERNEL))) {
dbg ("udsl_usb_probe: no memory for send buffer %d!", i);
goto fail;
}
list_add (&buf->list, &instance->spare_buffers);
list_add (&buf->list, &instance->spare_send_buffers);
}
/* atm init */
/* ATM init */
if (!(instance->atm_dev = atm_dev_register (udsl_driver_name, &udsl_atm_devops, -1, 0))) {
dbg ("udsl_usb_probe: failed to register ATM device!");
goto fail;
......@@ -1174,14 +1098,14 @@ static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_i
instance->atm_dev->ci_range.vci_bits = ATM_CI_MAX;
instance->atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
/* tmp init atm device, set to 128kbit */
/* temp init ATM device, set to 128kbit */
instance->atm_dev->link_rate = 128 * 1000 / 424;
/* set MAC address, it is stored in the serial number */
memset (instance->atm_dev->esi, 0, sizeof (instance->atm_dev->esi));
if (usb_string (dev, dev->descriptor.iSerialNumber, mac_str, sizeof (mac_str)) == 12)
for (i = 0; i < 6; i++)
instance->atm_dev->esi[i] = (hex2int (mac_str[i * 2]) * 16) + (hex2int (mac_str[i * 2 + 1]));
instance->atm_dev->esi [i] = (hex2int (mac_str [i * 2]) * 16) + (hex2int (mac_str [i * 2 + 1]));
/* device description */
buf = instance->description;
......@@ -1215,20 +1139,17 @@ static int udsl_usb_probe (struct usb_interface *intf, const struct usb_device_i
return 0;
fail:
for (i = 0; i < UDSL_NUMBER_SND_BUFS; i++)
kfree (instance->all_buffers[i].base);
for (i = 0; i < UDSL_NUM_SND_BUFS; i++)
kfree (instance->send_buffers [i].base);
for (i = 0; i < UDSL_NUMBER_SND_URBS; i++)
usb_free_urb (instance->all_senders[i].urb);
for (i = 0; i < UDSL_NUM_SND_URBS; i++)
usb_free_urb (instance->senders [i].urb);
for (i = 0; i < UDSL_NUMBER_RCV_URBS; i++) {
struct udsl_receiver *rcv = &(instance->all_receivers[i]);
for (i = 0; i < UDSL_NUM_RCV_BUFS; i++)
kfree (instance->receive_buffers [i].base);
usb_free_urb (rcv->urb);
if (rcv->skb)
kfree_skb (rcv->skb);
}
for (i = 0; i < UDSL_NUM_RCV_URBS; i++)
usb_free_urb (instance->receivers [i].urb);
kfree (instance);
......@@ -1239,7 +1160,7 @@ static void udsl_usb_disconnect (struct usb_interface *intf)
{
struct udsl_instance_data *instance = usb_get_intfdata (intf);
struct list_head *pos;
unsigned int count = 0;
unsigned int count;
int result, i;
dbg ("udsl_usb_disconnect entered");
......@@ -1251,38 +1172,25 @@ static void udsl_usb_disconnect (struct usb_interface *intf)
return;
}
tasklet_disable (&instance->receive_tasklet);
/* receive finalize */
down (&instance->serialize); /* vs udsl_fire_receivers */
/* no need to take the spinlock */
list_for_each (pos, &instance->spare_receivers)
if (++count > UDSL_NUMBER_RCV_URBS)
panic (__FILE__ ": memory corruption detected at line %d!\n", __LINE__);
INIT_LIST_HEAD (&instance->spare_receivers);
up (&instance->serialize);
dbg ("udsl_usb_disconnect: flushed %u spare receivers", count);
count = UDSL_NUMBER_RCV_URBS - count;
tasklet_disable (&instance->receive_tasklet);
for (i = 0; i < UDSL_NUMBER_RCV_URBS; i++)
if ((result = usb_unlink_urb (instance->all_receivers[i].urb)) < 0)
for (i = 0; i < UDSL_NUM_RCV_URBS; i++)
if ((result = usb_unlink_urb (instance->receivers [i].urb)) < 0)
dbg ("udsl_usb_disconnect: usb_unlink_urb on receive urb %d returned %d", i, result);
/* wait for completion handlers to finish */
do {
unsigned int completed = 0;
spin_lock_irq (&instance->completed_receivers_lock);
list_for_each (pos, &instance->completed_receivers)
if (++completed > count)
count = 0;
spin_lock_irq (&instance->receive_lock);
list_for_each (pos, &instance->spare_receivers)
if (++count > UDSL_NUM_RCV_URBS)
panic (__FILE__ ": memory corruption detected at line %d!\n", __LINE__);
spin_unlock_irq (&instance->completed_receivers_lock);
spin_unlock_irq (&instance->receive_lock);
dbg ("udsl_usb_disconnect: found %u completed receivers", completed);
dbg ("udsl_usb_disconnect: found %u spare receivers", count);
if (completed == count)
if (count == UDSL_NUM_RCV_URBS)
break;
set_current_state (TASK_RUNNING);
......@@ -1290,37 +1198,36 @@ static void udsl_usb_disconnect (struct usb_interface *intf)
} while (1);
/* no need to take the spinlock */
INIT_LIST_HEAD (&instance->completed_receivers);
INIT_LIST_HEAD (&instance->filled_receive_buffers);
INIT_LIST_HEAD (&instance->spare_receive_buffers);
tasklet_enable (&instance->receive_tasklet);
tasklet_kill (&instance->receive_tasklet);
for (i = 0; i < UDSL_NUMBER_RCV_URBS; i++) {
struct udsl_receiver *rcv = &(instance->all_receivers[i]);
for (i = 0; i < UDSL_NUM_RCV_URBS; i++)
usb_free_urb (instance->receivers [i].urb);
usb_free_urb (rcv->urb);
kfree_skb (rcv->skb);
}
for (i = 0; i < UDSL_NUM_RCV_BUFS; i++)
kfree (instance->receive_buffers [i].base);
/* send finalize */
tasklet_disable (&instance->send_tasklet);
for (i = 0; i < UDSL_NUMBER_SND_URBS; i++)
if ((result = usb_unlink_urb (instance->all_senders[i].urb)) < 0)
for (i = 0; i < UDSL_NUM_SND_URBS; i++)
if ((result = usb_unlink_urb (instance->senders [i].urb)) < 0)
dbg ("udsl_usb_disconnect: usb_unlink_urb on send urb %d returned %d", i, result);
/* wait for completion handlers to finish */
do {
count = 0;
spin_lock (&instance->send_lock);
spin_lock_irq (&instance->send_lock);
list_for_each (pos, &instance->spare_senders)
if (++count > UDSL_NUMBER_SND_URBS)
if (++count > UDSL_NUM_SND_URBS)
panic (__FILE__ ": memory corruption detected at line %d!\n", __LINE__);
spin_unlock (&instance->send_lock);
spin_unlock_irq (&instance->send_lock);
dbg ("udsl_usb_disconnect: found %u spare senders", count);
if (count == UDSL_NUMBER_SND_URBS)
if (count == UDSL_NUM_SND_URBS)
break;
set_current_state (TASK_RUNNING);
......@@ -1329,22 +1236,22 @@ static void udsl_usb_disconnect (struct usb_interface *intf)
/* no need to take the spinlock */
INIT_LIST_HEAD (&instance->spare_senders);
INIT_LIST_HEAD (&instance->spare_buffers);
INIT_LIST_HEAD (&instance->spare_send_buffers);
instance->current_buffer = NULL;
tasklet_enable (&instance->send_tasklet);
for (i = 0; i < UDSL_NUMBER_SND_URBS; i++)
usb_free_urb (instance->all_senders[i].urb);
for (i = 0; i < UDSL_NUM_SND_URBS; i++)
usb_free_urb (instance->senders [i].urb);
for (i = 0; i < UDSL_NUMBER_SND_BUFS; i++)
kfree (instance->all_buffers[i].base);
for (i = 0; i < UDSL_NUM_SND_BUFS; i++)
kfree (instance->send_buffers [i].base);
wmb ();
instance->usb_dev = NULL;
/* atm finalize */
shutdown_atm_dev (instance->atm_dev); /* frees instance */
/* ATM finalize */
shutdown_atm_dev (instance->atm_dev); /* frees instance, kills tasklets */
}
......@@ -1392,10 +1299,10 @@ static int udsl_print_packet (const unsigned char *data, int len)
int i = 0, j = 0;
for (i = 0; i < len;) {
buffer[0] = '\0';
buffer [0] = '\0';
sprintf (buffer, "%.3d :", i);
for (j = 0; (j < 16) && (i < len); j++, i++) {
sprintf (buffer, "%s %2.2x", buffer, data[i]);
sprintf (buffer, "%s %2.2x", buffer, data [i]);
}
dbg ("%s", buffer);
}
......
drivers/usb/storage/transport.c
View file @ 1a569433
......@@ -988,7 +988,7 @@ int usb_stor_Bulk_transport(Scsi_Cmnd *srb, struct us_data *us)
US_DEBUGP("Bulk status Sig 0x%x T 0x%x R %d Stat 0x%x\n",
le32_to_cpu(bcs.Signature), bcs.Tag,
bcs.Residue, bcs.Status);
if (bcs.Signature != cpu_to_le32(US_BULK_CS_SIGN) ||
if ((bcs.Signature != cpu_to_le32(US_BULK_CS_SIGN) && bcs.Signature != cpu_to_le32(US_BULK_CS_OLYMPUS_SIGN)) ||
bcs.Tag != bcb.Tag ||
bcs.Status > US_BULK_STAT_PHASE) {
US_DEBUGP("Bulk logical error\n");
......
drivers/usb/storage/transport.h
View file @ 1a569433
......@@ -105,6 +105,8 @@ struct bulk_cs_wrap {
#define US_BULK_CS_WRAP_LEN 13
#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */
/* This is for Olympus Camedia digital cameras */
#define US_BULK_CS_OLYMPUS_SIGN 0x55425355 /* spells out 'USBU' */
#define US_BULK_STAT_OK 0
#define US_BULK_STAT_FAIL 1
#define US_BULK_STAT_PHASE 2
......
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