diff options
Diffstat (limited to 'drivers/usb/host/ehci-q.c')
| -rw-r--r-- | drivers/usb/host/ehci-q.c | 119 |
1 files changed, 105 insertions, 14 deletions
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index d34b399b78e2..e321804c3475 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -168,13 +168,13 @@ static void ehci_clear_tt_buffer(struct ehci_hcd *ehci, struct ehci_qh *qh, * Note: this routine is never called for Isochronous transfers. */ if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { -#ifdef DEBUG +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) struct usb_device *tt = urb->dev->tt->hub; dev_dbg(&tt->dev, "clear tt buffer port %d, a%d ep%d t%08x\n", urb->dev->ttport, urb->dev->devnum, usb_pipeendpoint(urb->pipe), token); -#endif /* DEBUG */ +#endif /* DEBUG || CONFIG_DYNAMIC_DEBUG */ if (!ehci_is_TDI(ehci) || urb->dev->tt->hub != ehci_to_hcd(ehci)->self.root_hub) { @@ -240,13 +240,6 @@ static int qtd_copy_status ( } else { /* unknown */ status = -EPROTO; } - - ehci_vdbg (ehci, - "dev%d ep%d%s qtd token %08x --> status %d\n", - usb_pipedevice (urb->pipe), - usb_pipeendpoint (urb->pipe), - usb_pipein (urb->pipe) ? "in" : "out", - token, status); } return status; @@ -254,8 +247,6 @@ static int qtd_copy_status ( static void ehci_urb_done(struct ehci_hcd *ehci, struct urb *urb, int status) -__releases(ehci->lock) -__acquires(ehci->lock) { if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { /* ... update hc-wide periodic stats */ @@ -281,11 +272,8 @@ __acquires(ehci->lock) urb->actual_length, urb->transfer_buffer_length); #endif - /* complete() can reenter this HCD */ usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb); - spin_unlock (&ehci->lock); usb_hcd_giveback_urb(ehci_to_hcd(ehci), urb, status); - spin_lock (&ehci->lock); } static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh); @@ -1144,6 +1132,109 @@ submit_async ( } /*-------------------------------------------------------------------------*/ +#ifdef CONFIG_USB_HCD_TEST_MODE +/* + * This function creates the qtds and submits them for the + * SINGLE_STEP_SET_FEATURE Test. + * This is done in two parts: first SETUP req for GetDesc is sent then + * 15 seconds later, the IN stage for GetDesc starts to req data from dev + * + * is_setup : i/p arguement decides which of the two stage needs to be + * performed; TRUE - SETUP and FALSE - IN+STATUS + * Returns 0 if success + */ +static int submit_single_step_set_feature( + struct usb_hcd *hcd, + struct urb *urb, + int is_setup +) { + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct list_head qtd_list; + struct list_head *head; + + struct ehci_qtd *qtd, *qtd_prev; + dma_addr_t buf; + int len, maxpacket; + u32 token; + + INIT_LIST_HEAD(&qtd_list); + head = &qtd_list; + + /* URBs map to sequences of QTDs: one logical transaction */ + qtd = ehci_qtd_alloc(ehci, GFP_KERNEL); + if (unlikely(!qtd)) + return -1; + list_add_tail(&qtd->qtd_list, head); + qtd->urb = urb; + + token = QTD_STS_ACTIVE; + token |= (EHCI_TUNE_CERR << 10); + + len = urb->transfer_buffer_length; + /* + * Check if the request is to perform just the SETUP stage (getDesc) + * as in SINGLE_STEP_SET_FEATURE test, DATA stage (IN) happens + * 15 secs after the setup + */ + if (is_setup) { + /* SETUP pid */ + qtd_fill(ehci, qtd, urb->setup_dma, + sizeof(struct usb_ctrlrequest), + token | (2 /* "setup" */ << 8), 8); + + submit_async(ehci, urb, &qtd_list, GFP_ATOMIC); + return 0; /*Return now; we shall come back after 15 seconds*/ + } + + /* + * IN: data transfer stage: buffer setup : start the IN txn phase for + * the get_Desc SETUP which was sent 15seconds back + */ + token ^= QTD_TOGGLE; /*We need to start IN with DATA-1 Pid-sequence*/ + buf = urb->transfer_dma; + + token |= (1 /* "in" */ << 8); /*This is IN stage*/ + + maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, 0)); + + qtd_fill(ehci, qtd, buf, len, token, maxpacket); + + /* + * Our IN phase shall always be a short read; so keep the queue running + * and let it advance to the next qtd which zero length OUT status + */ + qtd->hw_alt_next = EHCI_LIST_END(ehci); + + /* STATUS stage for GetDesc control request */ + token ^= 0x0100; /* "in" <--> "out" */ + token |= QTD_TOGGLE; /* force DATA1 */ + + qtd_prev = qtd; + qtd = ehci_qtd_alloc(ehci, GFP_ATOMIC); + if (unlikely(!qtd)) + goto cleanup; + qtd->urb = urb; + qtd_prev->hw_next = QTD_NEXT(ehci, qtd->qtd_dma); + list_add_tail(&qtd->qtd_list, head); + + /* dont fill any data in such packets */ + qtd_fill(ehci, qtd, 0, 0, token, 0); + + /* by default, enable interrupt on urb completion */ + if (likely(!(urb->transfer_flags & URB_NO_INTERRUPT))) + qtd->hw_token |= cpu_to_hc32(ehci, QTD_IOC); + + submit_async(ehci, urb, &qtd_list, GFP_KERNEL); + + return 0; + +cleanup: + qtd_list_free(ehci, urb, head); + return -1; +} +#endif /* CONFIG_USB_HCD_TEST_MODE */ + +/*-------------------------------------------------------------------------*/ static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) { |