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Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  usb: musb: core: set has_tt flag
  USB: xhci: mark local functions as static
  USB: xhci: fix couple sparse annotations
  USB: xhci: rework xhci_print_ir_set() to get ir set from xhci itself
  USB: Reset USB 3.0 devices on (re)discovery
  xhci: Fix an error in count_sg_trbs_needed()
  xhci: Fix errors in the running total calculations in the TRB math
  xhci: Clarify some expressions in the TRB math
  xhci: Avoid BUG() in interrupt context
This commit is contained in:
Linus Torvalds 2011-02-25 11:14:44 -08:00
parent 638691a7a4 ec95d35a6b
commit c1bc3beb06
7 changed files with 49 additions and 45 deletions
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18
drivers/usb/core/hub.c
View File

@ -2681,17 +2681,13 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
mutex_lock(&usb_address0_mutex);
if (!udev->config && oldspeed == USB_SPEED_SUPER) {
/* Don't reset USB 3.0 devices during an initial setup */
usb_set_device_state(udev, USB_STATE_DEFAULT);
} else {
/* Reset the device; full speed may morph to high speed */
/* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
retval = hub_port_reset(hub, port1, udev, delay);
if (retval < 0) /* error or disconnect */
goto fail;
/* success, speed is known */
}
/* Reset the device; full speed may morph to high speed */
/* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
retval = hub_port_reset(hub, port1, udev, delay);
if (retval < 0) /* error or disconnect */
goto fail;
/* success, speed is known */
retval = -ENODEV;
if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed) {

9
drivers/usb/host/xhci-dbg.c
View File

@ -169,9 +169,10 @@ static void xhci_print_ports(struct xhci_hcd *xhci)
}
}
void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num)
void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num)
{
void *addr;
struct xhci_intr_reg __iomem *ir_set = &xhci->run_regs->ir_set[set_num];
void __iomem *addr;
u32 temp;
u64 temp_64;
@ -449,7 +450,7 @@ char *xhci_get_slot_state(struct xhci_hcd *xhci,
}
}
void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
static void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
{
/* Fields are 32 bits wide, DMA addresses are in bytes */
int field_size = 32 / 8;
@ -488,7 +489,7 @@ void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
dbg_rsvd64(xhci, (u64 *)slot_ctx, dma);
}
void xhci_dbg_ep_ctx(struct xhci_hcd *xhci,
static void xhci_dbg_ep_ctx(struct xhci_hcd *xhci,
struct xhci_container_ctx *ctx,
unsigned int last_ep)
{

10
drivers/usb/host/xhci-mem.c
View File

@ -307,7 +307,7 @@ struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci,
/***************** Streams structures manipulation *************************/
void xhci_free_stream_ctx(struct xhci_hcd *xhci,
static void xhci_free_stream_ctx(struct xhci_hcd *xhci,
unsigned int num_stream_ctxs,
struct xhci_stream_ctx *stream_ctx, dma_addr_t dma)
{
@ -335,7 +335,7 @@ void xhci_free_stream_ctx(struct xhci_hcd *xhci,
* The stream context array must be a power of 2, and can be as small as
* 64 bytes or as large as 1MB.
*/
struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci,
static struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci,
unsigned int num_stream_ctxs, dma_addr_t *dma,
gfp_t mem_flags)
{
@ -1900,11 +1900,11 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
val &= DBOFF_MASK;
xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x"
" from cap regs base addr\n", val);
xhci->dba = (void *) xhci->cap_regs + val;
xhci->dba = (void __iomem *) xhci->cap_regs + val;
xhci_dbg_regs(xhci);
xhci_print_run_regs(xhci);
/* Set ir_set to interrupt register set 0 */
xhci->ir_set = (void *) xhci->run_regs->ir_set;
xhci->ir_set = &xhci->run_regs->ir_set[0];
/*
* Event ring setup: Allocate a normal ring, but also setup
@ -1961,7 +1961,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
/* Set the event ring dequeue address */
xhci_set_hc_event_deq(xhci);
xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n");
xhci_print_ir_set(xhci, xhci->ir_set, 0);
xhci_print_ir_set(xhci, 0);
/*
* XXX: Might need to set the Interrupter Moderation Register to

40
drivers/usb/host/xhci-ring.c
View File

@ -474,8 +474,11 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
state->new_deq_seg = find_trb_seg(cur_td->start_seg,
dev->eps[ep_index].stopped_trb,
&state->new_cycle_state);
if (!state->new_deq_seg)
BUG();
if (!state->new_deq_seg) {
WARN_ON(1);
return;
}
/* Dig out the cycle state saved by the xHC during the stop ep cmd */
xhci_dbg(xhci, "Finding endpoint context\n");
ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
@ -486,8 +489,10 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
state->new_deq_seg = find_trb_seg(state->new_deq_seg,
state->new_deq_ptr,
&state->new_cycle_state);
if (!state->new_deq_seg)
BUG();
if (!state->new_deq_seg) {
WARN_ON(1);
return;
}
trb = &state->new_deq_ptr->generic;
if ((trb->field[3] & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK) &&
@ -2363,12 +2368,13 @@ static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb)
/* Scatter gather list entries may cross 64KB boundaries */
running_total = TRB_MAX_BUFF_SIZE -
(sg_dma_address(sg) & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
(sg_dma_address(sg) & (TRB_MAX_BUFF_SIZE - 1));
running_total &= TRB_MAX_BUFF_SIZE - 1;
if (running_total != 0)
num_trbs++;
/* How many more 64KB chunks to transfer, how many more TRBs? */
while (running_total < sg_dma_len(sg)) {
while (running_total < sg_dma_len(sg) && running_total < temp) {
num_trbs++;
running_total += TRB_MAX_BUFF_SIZE;
}
@ -2394,11 +2400,11 @@ static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb)
static void check_trb_math(struct urb *urb, int num_trbs, int running_total)
{
if (num_trbs != 0)
dev_dbg(&urb->dev->dev, "%s - ep %#x - Miscalculated number of "
dev_err(&urb->dev->dev, "%s - ep %#x - Miscalculated number of "
"TRBs, %d left\n", __func__,
urb->ep->desc.bEndpointAddress, num_trbs);
if (running_total != urb->transfer_buffer_length)
dev_dbg(&urb->dev->dev, "%s - ep %#x - Miscalculated tx length, "
dev_err(&urb->dev->dev, "%s - ep %#x - Miscalculated tx length, "
"queued %#x (%d), asked for %#x (%d)\n",
__func__,
urb->ep->desc.bEndpointAddress,
@ -2533,8 +2539,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
sg = urb->sg;
addr = (u64) sg_dma_address(sg);
this_sg_len = sg_dma_len(sg);
trb_buff_len = TRB_MAX_BUFF_SIZE -
(addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
trb_buff_len = TRB_MAX_BUFF_SIZE - (addr & (TRB_MAX_BUFF_SIZE - 1));
trb_buff_len = min_t(int, trb_buff_len, this_sg_len);
if (trb_buff_len > urb->transfer_buffer_length)
trb_buff_len = urb->transfer_buffer_length;
@ -2572,7 +2577,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
(unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1),
(unsigned int) addr + trb_buff_len);
if (TRB_MAX_BUFF_SIZE -
(addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1)) < trb_buff_len) {
(addr & (TRB_MAX_BUFF_SIZE - 1)) < trb_buff_len) {
xhci_warn(xhci, "WARN: sg dma xfer crosses 64KB boundaries!\n");
xhci_dbg(xhci, "Next boundary at %#x, end dma = %#x\n",
(unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1),
@ -2616,7 +2621,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
}
trb_buff_len = TRB_MAX_BUFF_SIZE -
(addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
(addr & (TRB_MAX_BUFF_SIZE - 1));
trb_buff_len = min_t(int, trb_buff_len, this_sg_len);
if (running_total + trb_buff_len > urb->transfer_buffer_length)
trb_buff_len =
@ -2656,7 +2661,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
num_trbs = 0;
/* How much data is (potentially) left before the 64KB boundary? */
running_total = TRB_MAX_BUFF_SIZE -
(urb->transfer_dma & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
(urb->transfer_dma & (TRB_MAX_BUFF_SIZE - 1));
running_total &= TRB_MAX_BUFF_SIZE - 1;
/* If there's some data on this 64KB chunk, or we have to send a
* zero-length transfer, we need at least one TRB
@ -2700,8 +2706,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
/* How much data is in the first TRB? */
addr = (u64) urb->transfer_dma;
trb_buff_len = TRB_MAX_BUFF_SIZE -
(urb->transfer_dma & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
if (urb->transfer_buffer_length < trb_buff_len)
(urb->transfer_dma & (TRB_MAX_BUFF_SIZE - 1));
if (trb_buff_len > urb->transfer_buffer_length)
trb_buff_len = urb->transfer_buffer_length;
first_trb = true;
@ -2879,8 +2885,8 @@ static int count_isoc_trbs_needed(struct xhci_hcd *xhci,
addr = (u64) (urb->transfer_dma + urb->iso_frame_desc[i].offset);
td_len = urb->iso_frame_desc[i].length;
running_total = TRB_MAX_BUFF_SIZE -
(addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1));
running_total = TRB_MAX_BUFF_SIZE - (addr & (TRB_MAX_BUFF_SIZE - 1));
running_total &= TRB_MAX_BUFF_SIZE - 1;
if (running_total != 0)
num_trbs++;

14
drivers/usb/host/xhci.c
View File

@ -109,7 +109,7 @@ int xhci_halt(struct xhci_hcd *xhci)
/*
* Set the run bit and wait for the host to be running.
*/
int xhci_start(struct xhci_hcd *xhci)
static int xhci_start(struct xhci_hcd *xhci)
{
u32 temp;
int ret;
@ -329,7 +329,7 @@ int xhci_init(struct usb_hcd *hcd)
#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING
void xhci_event_ring_work(unsigned long arg)
static void xhci_event_ring_work(unsigned long arg)
{
unsigned long flags;
int temp;
@ -473,7 +473,7 @@ int xhci_run(struct usb_hcd *hcd)
xhci->ir_set, (unsigned int) ER_IRQ_ENABLE(temp));
xhci_writel(xhci, ER_IRQ_ENABLE(temp),
&xhci->ir_set->irq_pending);
xhci_print_ir_set(xhci, xhci->ir_set, 0);
xhci_print_ir_set(xhci, 0);
if (NUM_TEST_NOOPS > 0)
doorbell = xhci_setup_one_noop(xhci);
@ -528,7 +528,7 @@ void xhci_stop(struct usb_hcd *hcd)
temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
xhci_writel(xhci, ER_IRQ_DISABLE(temp),
&xhci->ir_set->irq_pending);
xhci_print_ir_set(xhci, xhci->ir_set, 0);
xhci_print_ir_set(xhci, 0);
xhci_dbg(xhci, "cleaning up memory\n");
xhci_mem_cleanup(xhci);
@ -755,7 +755,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
xhci_writel(xhci, ER_IRQ_DISABLE(temp),
&xhci->ir_set->irq_pending);
xhci_print_ir_set(xhci, xhci->ir_set, 0);
xhci_print_ir_set(xhci, 0);
xhci_dbg(xhci, "cleaning up memory\n");
xhci_mem_cleanup(xhci);
@ -857,7 +857,7 @@ unsigned int xhci_last_valid_endpoint(u32 added_ctxs)
/* Returns 1 if the arguments are OK;
* returns 0 this is a root hub; returns -EINVAL for NULL pointers.
*/
int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
struct usb_host_endpoint *ep, int check_ep, bool check_virt_dev,
const char *func) {
struct xhci_hcd *xhci;
@ -1693,7 +1693,7 @@ static void xhci_setup_input_ctx_for_config_ep(struct xhci_hcd *xhci,
xhci_dbg_ctx(xhci, in_ctx, xhci_last_valid_endpoint(add_flags));
}
void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci,
static void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci,
unsigned int slot_id, unsigned int ep_index,
struct xhci_dequeue_state *deq_state)
{

2
drivers/usb/host/xhci.h
View File

@ -1348,7 +1348,7 @@ static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
}
/* xHCI debugging */
void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num);
void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num);
void xhci_print_registers(struct xhci_hcd *xhci);
void xhci_dbg_regs(struct xhci_hcd *xhci);
void xhci_print_run_regs(struct xhci_hcd *xhci);

1
drivers/usb/musb/musb_core.c
View File

@ -1864,6 +1864,7 @@ allocate_instance(struct device *dev,
INIT_LIST_HEAD(&musb->out_bulk);
hcd->uses_new_polling = 1;
hcd->has_tt = 1;
musb->vbuserr_retry = VBUSERR_RETRY_COUNT;
musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON;