diff options
Diffstat (limited to 'drivers/usb')
34 files changed, 533 insertions, 168 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 69426e644d17..3dbb4a21ab44 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -914,6 +914,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) if (!ci) return -ENOMEM; + spin_lock_init(&ci->lock); ci->dev = dev; ci->platdata = dev_get_platdata(dev); ci->imx28_write_fix = !!(ci->platdata->flags & diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 96ae69502c86..111b0e0b8698 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -188,6 +188,8 @@ static void host_stop(struct ci_hdrc *ci) if (hcd) { usb_remove_hcd(hcd); + ci->role = CI_ROLE_END; + synchronize_irq(ci->irq); usb_put_hcd(hcd); if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci) && (ci->platdata->flags & CI_HDRC_TURN_VBUS_EARLY_ON)) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 661f43fe0f9e..c9e80ad48fdc 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1889,8 +1889,6 @@ static int udc_start(struct ci_hdrc *ci) struct usb_otg_caps *otg_caps = &ci->platdata->ci_otg_caps; int retval = 0; - spin_lock_init(&ci->lock); - ci->gadget.ops = &usb_gadget_ops; ci->gadget.speed = USB_SPEED_UNKNOWN; ci->gadget.max_speed = USB_SPEED_HIGH; diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 78f0f85bebdc..fada988512a1 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -932,8 +932,6 @@ static int wait_serial_change(struct acm *acm, unsigned long arg) DECLARE_WAITQUEUE(wait, current); struct async_icount old, new; - if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD)) - return -EINVAL; do { spin_lock_irq(&acm->read_lock); old = acm->oldcount; @@ -1161,6 +1159,8 @@ static int acm_probe(struct usb_interface *intf, if (quirks == IGNORE_DEVICE) return -ENODEV; + memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header)); + num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; /* handle quirks deadly to normal probing*/ diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index fa9b26b91507..4c0fa0b17353 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -463,9 +463,18 @@ static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) */ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) { + bool ret; + switch (hsotg->dr_mode) { case USB_DR_MODE_HOST: - dwc2_force_mode(hsotg, true); + ret = dwc2_force_mode(hsotg, true); + /* + * NOTE: This is required for some rockchip soc based + * platforms on their host-only dwc2. + */ + if (!ret) + msleep(50); + break; case USB_DR_MODE_PERIPHERAL: dwc2_force_mode(hsotg, false); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index aad4107ef927..2a21a0414b1d 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -259,6 +259,13 @@ enum dwc2_lx_state { DWC2_L3, /* Off state */ }; +/* + * Gadget periodic tx fifo sizes as used by legacy driver + * EP0 is not included + */ +#define DWC2_G_P_LEGACY_TX_FIFO_SIZE {256, 256, 256, 256, 768, 768, 768, \ + 768, 0, 0, 0, 0, 0, 0, 0} + /* Gadget ep0 states */ enum dwc2_ep0_state { DWC2_EP0_SETUP, diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 4cd6403a7566..24fbebc9b409 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -186,10 +186,9 @@ static void dwc2_hsotg_ctrl_epint(struct dwc2_hsotg *hsotg, */ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg) { - unsigned int fifo; + unsigned int ep; unsigned int addr; int timeout; - u32 dptxfsizn; u32 val; /* Reset fifo map if not correctly cleared during previous session */ @@ -217,16 +216,16 @@ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg) * them to endpoints dynamically according to maxpacket size value of * given endpoint. */ - for (fifo = 1; fifo < MAX_EPS_CHANNELS; fifo++) { - dptxfsizn = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo)); - - val = (dptxfsizn & FIFOSIZE_DEPTH_MASK) | addr; - addr += dptxfsizn >> FIFOSIZE_DEPTH_SHIFT; - - if (addr > hsotg->fifo_mem) - break; + for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) { + if (!hsotg->g_tx_fifo_sz[ep]) + continue; + val = addr; + val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT; + WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem, + "insufficient fifo memory"); + addr += hsotg->g_tx_fifo_sz[ep]; - dwc2_writel(val, hsotg->regs + DPTXFSIZN(fifo)); + dwc2_writel(val, hsotg->regs + DPTXFSIZN(ep)); } /* @@ -3807,10 +3806,36 @@ static void dwc2_hsotg_dump(struct dwc2_hsotg *hsotg) static void dwc2_hsotg_of_probe(struct dwc2_hsotg *hsotg) { struct device_node *np = hsotg->dev->of_node; + u32 len = 0; + u32 i = 0; /* Enable dma if requested in device tree */ hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma"); + /* + * Register TX periodic fifo size per endpoint. + * EP0 is excluded since it has no fifo configuration. + */ + if (!of_find_property(np, "g-tx-fifo-size", &len)) + goto rx_fifo; + + len /= sizeof(u32); + + /* Read tx fifo sizes other than ep0 */ + if (of_property_read_u32_array(np, "g-tx-fifo-size", + &hsotg->g_tx_fifo_sz[1], len)) + goto rx_fifo; + + /* Add ep0 */ + len++; + + /* Make remaining TX fifos unavailable */ + if (len < MAX_EPS_CHANNELS) { + for (i = len; i < MAX_EPS_CHANNELS; i++) + hsotg->g_tx_fifo_sz[i] = 0; + } + +rx_fifo: /* Register RX fifo size */ of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz); @@ -3832,10 +3857,13 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) struct device *dev = hsotg->dev; int epnum; int ret; + int i; + u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE; /* Initialize to legacy fifo configuration values */ hsotg->g_rx_fifo_sz = 2048; hsotg->g_np_g_tx_fifo_sz = 1024; + memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo)); /* Device tree specific probe */ dwc2_hsotg_of_probe(hsotg); @@ -3853,6 +3881,9 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n", hsotg->g_np_g_tx_fifo_sz); dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz); + for (i = 0; i < MAX_EPS_CHANNELS; i++) + dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i, + hsotg->g_tx_fifo_sz[i]); hsotg->gadget.max_speed = USB_SPEED_HIGH; hsotg->gadget.ops = &dwc2_hsotg_gadget_ops; diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 7287a763cd0c..fea446900cad 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -769,15 +769,14 @@ static int dwc3_core_init(struct dwc3 *dwc) return 0; err4: - phy_power_off(dwc->usb2_generic_phy); + phy_power_off(dwc->usb3_generic_phy); err3: - phy_power_off(dwc->usb3_generic_phy); + phy_power_off(dwc->usb2_generic_phy); err2: usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); - dwc3_core_exit(dwc); err1: usb_phy_shutdown(dwc->usb2_phy); diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index 89a2f712fdfe..aaaf256f71dd 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -31,6 +31,7 @@ #include <linux/slab.h> #include <linux/regmap.h> #include <linux/reset.h> +#include <linux/pinctrl/consumer.h> #include <linux/usb/of.h> #include "core.h" diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 07cc8929f271..1dfa56a5f1c5 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -783,6 +783,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, req->trb = trb; req->trb_dma = dwc3_trb_dma_offset(dep, trb); req->first_trb_index = dep->trb_enqueue; + dep->queued_requests++; } dwc3_ep_inc_enq(dep); @@ -833,8 +834,6 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, trb->ctrl |= DWC3_TRB_CTRL_HWO; - dep->queued_requests++; - trace_dwc3_prepare_trb(dep, trb); } @@ -1074,9 +1073,17 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) list_add_tail(&req->list, &dep->pending_list); - if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && - dep->flags & DWC3_EP_PENDING_REQUEST) { - if (list_empty(&dep->started_list)) { + /* + * NOTICE: Isochronous endpoints should NEVER be prestarted. We must + * wait for a XferNotReady event so we will know what's the current + * (micro-)frame number. + * + * Without this trick, we are very, very likely gonna get Bus Expiry + * errors which will force us issue EndTransfer command. + */ + if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { + if ((dep->flags & DWC3_EP_PENDING_REQUEST) && + list_empty(&dep->started_list)) { dwc3_stop_active_transfer(dwc, dep->number, true); dep->flags = DWC3_EP_ENABLED; } @@ -1861,8 +1868,11 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, unsigned int s_pkt = 0; unsigned int trb_status; - dep->queued_requests--; dwc3_ep_inc_deq(dep); + + if (req->trb == trb) + dep->queued_requests--; + trace_dwc3_complete_trb(dep, trb); /* @@ -2980,7 +2990,7 @@ err3: kfree(dwc->setup_buf); err2: - dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), + dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb) * 2, dwc->ep0_trb, dwc->ep0_trb_addr); err1: @@ -3005,7 +3015,7 @@ void dwc3_gadget_exit(struct dwc3 *dwc) kfree(dwc->setup_buf); kfree(dwc->zlp_buf); - dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), + dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb) * 2, dwc->ep0_trb, dwc->ep0_trb_addr); dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 54ad100af35b..17989b72cdae 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -136,8 +136,60 @@ struct ffs_epfile { /* * Buffer for holding data from partial reads which may happen since * we’re rounding user read requests to a multiple of a max packet size. + * + * The pointer is initialised with NULL value and may be set by + * __ffs_epfile_read_data function to point to a temporary buffer. + * + * In normal operation, calls to __ffs_epfile_read_buffered will consume + * data from said buffer and eventually free it. Importantly, while the + * function is using the buffer, it sets the pointer to NULL. This is + * all right since __ffs_epfile_read_data and __ffs_epfile_read_buffered + * can never run concurrently (they are synchronised by epfile->mutex) + * so the latter will not assign a new value to the pointer. + * + * Meanwhile ffs_func_eps_disable frees the buffer (if the pointer is + * valid) and sets the pointer to READ_BUFFER_DROP value. This special + * value is crux of the synchronisation between ffs_func_eps_disable and + * __ffs_epfile_read_data. + * + * Once __ffs_epfile_read_data is about to finish it will try to set the + * pointer back to its old value (as described above), but seeing as the + * pointer is not-NULL (namely READ_BUFFER_DROP) it will instead free + * the buffer. + * + * == State transitions == + * + * • ptr == NULL: (initial state) + * ◦ __ffs_epfile_read_buffer_free: go to ptr == DROP + * ◦ __ffs_epfile_read_buffered: nop + * ◦ __ffs_epfile_read_data allocates temp buffer: go to ptr == buf + * ◦ reading finishes: n/a, not in ‘and reading’ state + * • ptr == DROP: + * ◦ __ffs_epfile_read_buffer_free: nop + * ◦ __ffs_epfile_read_buffered: go to ptr == NULL + * ◦ __ffs_epfile_read_data allocates temp buffer: free buf, nop + * ◦ reading finishes: n/a, not in ‘and reading’ state + * • ptr == buf: + * ◦ __ffs_epfile_read_buffer_free: free buf, go to ptr == DROP + * ◦ __ffs_epfile_read_buffered: go to ptr == NULL and reading + * ◦ __ffs_epfile_read_data: n/a, __ffs_epfile_read_buffered + * is always called first + * ◦ reading finishes: n/a, not in ‘and reading’ state + * • ptr == NULL and reading: + * ◦ __ffs_epfile_read_buffer_free: go to ptr == DROP and reading + * ◦ __ffs_epfile_read_buffered: n/a, mutex is held + * ◦ __ffs_epfile_read_data: n/a, mutex is held + * ◦ reading finishes and … + * … all data read: free buf, go to ptr == NULL + * … otherwise: go to ptr == buf and reading + * • ptr == DROP and reading: + * ◦ __ffs_epfile_read_buffer_free: nop + * ◦ __ffs_epfile_read_buffered: n/a, mutex is held + * ◦ __ffs_epfile_read_data: n/a, mutex is held + * ◦ reading finishes: free buf, go to ptr == DROP */ - struct ffs_buffer *read_buffer; /* P: epfile->mutex */ + struct ffs_buffer *read_buffer; +#define READ_BUFFER_DROP ((struct ffs_buffer *)ERR_PTR(-ESHUTDOWN)) char name[5]; @@ -736,25 +788,47 @@ static void ffs_epfile_async_io_complete(struct usb_ep *_ep, schedule_work(&io_data->work); } +static void __ffs_epfile_read_buffer_free(struct ffs_epfile *epfile) +{ + /* + * See comment in struct ffs_epfile for full read_buffer pointer + * synchronisation story. + */ + struct ffs_buffer *buf = xchg(&epfile->read_buffer, READ_BUFFER_DROP); + if (buf && buf != READ_BUFFER_DROP) + kfree(buf); +} + /* Assumes epfile->mutex is held. */ static ssize_t __ffs_epfile_read_buffered(struct ffs_epfile *epfile, struct iov_iter *iter) { - struct ffs_buffer *buf = epfile->read_buffer; + /* + * Null out epfile->read_buffer so ffs_func_eps_disable does not free + * the buffer while we are using it. See comment in struct ffs_epfile + * for full read_buffer pointer synchronisation story. + */ + struct ffs_buffer *buf = xchg(&epfile->read_buffer, NULL); ssize_t ret; - if (!buf) + if (!buf || buf == READ_BUFFER_DROP) return 0; ret = copy_to_iter(buf->data, buf->length, iter); if (buf->length == ret) { kfree(buf); - epfile->read_buffer = NULL; - } else if (unlikely(iov_iter_count(iter))) { + return ret; + } + + if (unlikely(iov_iter_count(iter))) { ret = -EFAULT; } else { buf->length -= ret; buf->data += ret; } + + if (cmpxchg(&epfile->read_buffer, NULL, buf)) + kfree(buf); + return ret; } @@ -783,7 +857,15 @@ static ssize_t __ffs_epfile_read_data(struct ffs_epfile *epfile, buf->length = data_len; buf->data = buf->storage; memcpy(buf->storage, data + ret, data_len); - epfile->read_buffer = buf; + + /* + * At this point read_buffer is NULL or READ_BUFFER_DROP (if + * ffs_func_eps_disable has been called in the meanwhile). See comment + * in struct ffs_epfile for full read_buffer pointer synchronisation + * story. + */ + if (unlikely(cmpxchg(&epfile->read_buffer, NULL, buf))) + kfree(buf); return ret; } @@ -1097,8 +1179,7 @@ ffs_epfile_release(struct inode *inode, struct file *file) ENTER(); - kfree(epfile->read_buffer); - epfile->read_buffer = NULL; + __ffs_epfile_read_buffer_free(epfile); ffs_data_closed(epfile->ffs); return 0; @@ -1724,24 +1805,20 @@ static void ffs_func_eps_disable(struct ffs_function *func) unsigned count = func->ffs->eps_count; unsigned long flags; + spin_lock_irqsave(&func->ffs->eps_lock, flags); do { - if (epfile) - mutex_lock(&epfile->mutex); - spin_lock_irqsave(&func->ffs->eps_lock, flags); /* pending requests get nuked */ if (likely(ep->ep)) usb_ep_disable(ep->ep); ++ep; - spin_unlock_irqrestore(&func->ffs->eps_lock, flags); if (epfile) { epfile->ep = NULL; - kfree(epfile->read_buffer); - epfile->read_buffer = NULL; - mutex_unlock(&epfile->mutex); + __ffs_epfile_read_buffer_free(epfile); ++epfile; } } while (--count); + spin_unlock_irqrestore(&func->ffs->eps_lock, flags); } static int ffs_func_eps_enable(struct ffs_function *func) @@ -3148,11 +3225,11 @@ static bool ffs_func_req_match(struct usb_function *f, switch (creq->bRequestType & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: - return ffs_func_revmap_intf(func, - le16_to_cpu(creq->wIndex) >= 0); + return (ffs_func_revmap_intf(func, + le16_to_cpu(creq->wIndex)) >= 0); case USB_RECIP_ENDPOINT: - return ffs_func_revmap_ep(func, - le16_to_cpu(creq->wIndex) >= 0); + return (ffs_func_revmap_ep(func, + le16_to_cpu(creq->wIndex)) >= 0); default: return (bool) (func->ffs->user_flags & FUNCTIONFS_ALL_CTRL_RECIP); diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 9c8c9ed1dc9e..5d1bd13a56c1 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -588,13 +588,6 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, req->length = length; - /* throttle high/super speed IRQ rate back slightly */ - if (gadget_is_dualspeed(dev->gadget)) - req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH || - dev->gadget->speed == USB_SPEED_SUPER) - ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0) - : 0; - retval = usb_ep_queue(in, req, GFP_ATOMIC); switch (retval) { default: diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index bb1f6c8f0f01..45bc997d0711 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1978,7 +1978,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, dev_err(&pdev->dev, "of_probe: name error(%d)\n", ret); goto err; } - ep->ep.name = name; + ep->ep.name = kasprintf(GFP_KERNEL, "ep%d", ep->index); ep->ep_regs = udc->regs + USBA_EPT_BASE(i); ep->dma_regs = udc->regs + USBA_DMA_BASE(i); diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 876dca4fc216..a268d9e8d6cf 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -39,7 +39,7 @@ #define DRIVER_DESC "EHCI generic platform driver" #define EHCI_MAX_CLKS 4 -#define EHCI_MAX_RSTS 3 +#define EHCI_MAX_RSTS 4 #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv) struct ehci_platform_priv { diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 5b5880c0ae19..b38a228134df 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -221,6 +221,12 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, ohci->num_ports = board->ports; at91_start_hc(pdev); + /* + * The RemoteWakeupConnected bit has to be set explicitly + * before calling ohci_run. The reset value of this bit is 0. + */ + ohci->hc_control = OHCI_CTRL_RWC; + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval == 0) { device_wakeup_enable(hcd->self.controller); @@ -677,9 +683,6 @@ ohci_hcd_at91_drv_suspend(struct device *dev) * REVISIT: some boards will be able to turn VBUS off... */ if (!ohci_at91->wakeup) { - ohci->hc_control = ohci_readl(ohci, &ohci->regs->control); - ohci->hc_control &= OHCI_CTRL_RWC; - ohci_writel(ohci, ohci->hc_control, &ohci->regs->control); ohci->rh_state = OHCI_RH_HALTED; /* flush the writes */ diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 1700908b84ef..86612ac3fda2 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -72,7 +72,7 @@ static const char hcd_name [] = "ohci_hcd"; #define STATECHANGE_DELAY msecs_to_jiffies(300) -#define IO_WATCHDOG_DELAY msecs_to_jiffies(250) +#define IO_WATCHDOG_DELAY msecs_to_jiffies(275) #include "ohci.h" #include "pci-quirks.h" diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index d793f548dfe2..a9a1e4c40480 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -995,6 +995,14 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) } val = readl(base + ext_cap_offset); + /* Auto handoff never worked for these devices. Force it and continue */ + if ((pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) || + (pdev->vendor == PCI_VENDOR_ID_RENESAS + && pdev->device == 0x0014)) { + val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED; + writel(val, base + ext_cap_offset); + } + /* If the BIOS owns the HC, signal that the OS wants it, and wait */ if (val & XHCI_HC_BIOS_OWNED) { writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset); diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 730b9fd26685..0ef16900efed 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -1166,7 +1166,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, xhci_set_link_state(xhci, port_array, wIndex, XDEV_RESUME); spin_unlock_irqrestore(&xhci->lock, flags); - msleep(20); + msleep(USB_RESUME_TIMEOUT); spin_lock_irqsave(&xhci->lock, flags); xhci_set_link_state(xhci, port_array, wIndex, XDEV_U0); @@ -1355,6 +1355,35 @@ int xhci_bus_suspend(struct usb_hcd *hcd) return 0; } +/* + * Workaround for missing Cold Attach Status (CAS) if device re-plugged in S3. + * warm reset a USB3 device stuck in polling or compliance mode after resume. + * See Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8 + */ +static bool xhci_port_missing_cas_quirk(int port_index, + __le32 __iomem **port_array) +{ + u32 portsc; + + portsc = readl(port_array[port_index]); + + /* if any of these are set we are not stuck */ + if (portsc & (PORT_CONNECT | PORT_CAS)) + return false; + + if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) && + ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE)) + return false; + + /* clear wakeup/change bits, and do a warm port reset */ + portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); + portsc |= PORT_WR; + writel(portsc, port_array[port_index]); + /* flush write */ + readl(port_array[port_index]); + return true; +} + int xhci_bus_resume(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -1392,6 +1421,14 @@ int xhci_bus_resume(struct usb_hcd *hcd) u32 temp; temp = readl(port_array[port_index]); + + /* warm reset CAS limited ports stuck in polling/compliance */ + if ((xhci->quirks & XHCI_MISSING_CAS) && + (hcd->speed >= HCD_USB3) && + xhci_port_missing_cas_quirk(port_index, port_array)) { + xhci_dbg(xhci, "reset stuck port %d\n", port_index); + continue; + } if (DEV_SUPERSPEED_ANY(temp)) temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); else @@ -1410,7 +1447,7 @@ int xhci_bus_resume(struct usb_hcd *hcd) if (need_usb2_u3_exit) { spin_unlock_irqrestore(&xhci->lock, flags); - msleep(20); + msleep(USB_RESUME_TIMEOUT); spin_lock_irqsave(&xhci->lock, flags); } diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index d7b0f97abbad..e96ae80d107e 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -45,11 +45,13 @@ #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 +#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI 0x9cb1 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8 #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI 0x1aa8 +#define PCI_DEVICE_ID_INTEL_APL_XHCI 0x5aa8 static const char hcd_name[] = "xhci_hcd"; @@ -153,7 +155,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_SPURIOUS_REBOOT; } if (pdev->vendor == PCI_VENDOR_ID_INTEL && - pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) { + (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI || + pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) { xhci->quirks |= XHCI_SPURIOUS_REBOOT; xhci->quirks |= XHCI_SPURIOUS_WAKEUP; } @@ -169,6 +172,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { xhci->quirks |= XHCI_SSIC_PORT_UNUSED; } + if (pdev->vendor == PCI_VENDOR_ID_INTEL && + (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || + pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI)) + xhci->quirks |= XHCI_MISSING_CAS; + if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_EJ168) { xhci->quirks |= XHCI_RESET_ON_RESUME; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index b2c1dc5dc0f3..f945380035d0 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -314,6 +314,8 @@ struct xhci_op_regs { #define XDEV_U2 (0x2 << 5) #define XDEV_U3 (0x3 << 5) #define XDEV_INACTIVE (0x6 << 5) +#define XDEV_POLLING (0x7 << 5) +#define XDEV_COMP_MODE (0xa << 5) #define XDEV_RESUME (0xf << 5) /* true: port has power (see HCC_PPC) */ #define PORT_POWER (1 << 9) @@ -1653,6 +1655,7 @@ struct xhci_hcd { #define XHCI_MTK_HOST (1 << 21) #define XHCI_SSIC_PORT_UNUSED (1 << 22) #define XHCI_NO_64BIT_SUPPORT (1 << 23) +#define XHCI_MISSING_CAS (1 << 24) unsigned int num_active_eps; unsigned int limit_active_eps; /* There are two roothubs to keep track of bus suspend info for */ diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 210b7e43a6fd..2440f88e07a3 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -479,7 +479,8 @@ static int da8xx_probe(struct platform_device *pdev) glue->phy = devm_phy_get(&pdev->dev, "usb-phy"); if (IS_ERR(glue->phy)) { - dev_err(&pdev->dev, "failed to get phy\n"); + if (PTR_ERR(glue->phy) != -EPROBE_DEFER) + dev_err(&pdev->dev, "failed to get phy\n"); return PTR_ERR(glue->phy); } diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 27dadc0d9114..c3e172e15ec3 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -986,7 +986,7 @@ b_host: } #endif - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); return handled; } @@ -1855,14 +1855,23 @@ static void musb_pm_runtime_check_session(struct musb *musb) MUSB_DEVCTL_HR; switch (devctl & ~s) { case MUSB_QUIRK_B_INVALID_VBUS_91: - if (!musb->session && !musb->quirk_invalid_vbus) { - musb->quirk_invalid_vbus = true; + if (musb->quirk_retries--) { musb_dbg(musb, - "First invalid vbus, assume no session"); + "Poll devctl on invalid vbus, assume no session"); + schedule_delayed_work(&musb->irq_work, + msecs_to_jiffies(1000)); + return; } - break; case MUSB_QUIRK_A_DISCONNECT_19: + if (musb->quirk_retries--) { + musb_dbg(musb, + "Poll devctl on possible host mode disconnect"); + schedule_delayed_work(&musb->irq_work, + msecs_to_jiffies(1000)); + + return; + } if (!musb->session) break; musb_dbg(musb, "Allow PM on possible host mode disconnect"); @@ -1886,9 +1895,9 @@ static void musb_pm_runtime_check_session(struct musb *musb) if (error < 0) dev_err(musb->controller, "Could not enable: %i\n", error); + musb->quirk_retries = 3; } else { musb_dbg(musb, "Allow PM with no session: %02x", devctl); - musb->quirk_invalid_vbus = false; pm_runtime_mark_last_busy(musb->controller); pm_runtime_put_autosuspend(musb->controller); } @@ -1899,7 +1908,7 @@ static void musb_pm_runtime_check_session(struct musb *musb) /* Only used to provide driver mode change events */ static void musb_irq_work(struct work_struct *data) { - struct musb *musb = container_of(data, struct musb, irq_work); + struct musb *musb = container_of(data, struct musb, irq_work.work); musb_pm_runtime_check_session(musb); @@ -1969,6 +1978,7 @@ static struct musb *allocate_instance(struct device *dev, INIT_LIST_HEAD(&musb->control); INIT_LIST_HEAD(&musb->in_bulk); INIT_LIST_HEAD(&musb->out_bulk); + INIT_LIST_HEAD(&musb->pending_list); musb->vbuserr_retry = VBUSERR_RETRY_COUNT; musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON; @@ -2018,6 +2028,84 @@ static void musb_free(struct musb *musb) musb_host_free(musb); } +struct musb_pending_work { + int (*callback)(struct musb *musb, void *data); + void *data; + struct list_head node; +}; + +/* + * Called from musb_runtime_resume(), musb_resume(), and + * musb_queue_resume_work(). Callers must take musb->lock. + */ +static int musb_run_resume_work(struct musb *musb) +{ + struct musb_pending_work *w, *_w; + unsigned long flags; + int error = 0; + + spin_lock_irqsave(&musb->list_lock, flags); + list_for_each_entry_safe(w, _w, &musb->pending_list, node) { + if (w->callback) { + error = w->callback(musb, w->data); + if (error < 0) { + dev_err(musb->controller, + "resume callback %p failed: %i\n", + w->callback, error); + } + } + list_del(&w->node); + devm_kfree(musb->controller, w); + } + spin_unlock_irqrestore(&musb->list_lock, flags); + + return error; +} + +/* + * Called to run work if device is active or else queue the work to happen + * on resume. Caller must take musb->lock and must hold an RPM reference. + * + * Note that we cowardly refuse queuing work after musb PM runtime + * resume is done calling musb_run_resume_work() and return -EINPROGRESS + * instead. + */ +int musb_queue_resume_work(struct musb *musb, + int (*callback)(struct musb *musb, void *data), + void *data) +{ + struct musb_pending_work *w; + unsigned long flags; + int error; + + if (WARN_ON(!callback)) + return -EINVAL; + + if (pm_runtime_active(musb->controller)) + return callback(musb, data); + + w = devm_kzalloc(musb->controller, sizeof(*w), GFP_ATOMIC); + if (!w) + return -ENOMEM; + + w->callback = callback; + w->data = data; + spin_lock_irqsave(&musb->list_lock, flags); + if (musb->is_runtime_suspended) { + list_add_tail(&w->node, &musb->pending_list); + error = 0; + } else { + dev_err(musb->controller, "could not add resume work %p\n", + callback); + devm_kfree(musb->controller, w); + error = -EINPROGRESS; + } + spin_unlock_irqrestore(&musb->list_lock, flags); + + return error; +} +EXPORT_SYMBOL_GPL(musb_queue_resume_work); + static void musb_deassert_reset(struct work_struct *work) { struct musb *musb; @@ -2065,6 +2153,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) } spin_lock_init(&musb->lock); + spin_lock_init(&musb->list_lock); musb->board_set_power = plat->set_power; musb->min_power = plat->min_power; musb->ops = plat->platform_ops; @@ -2114,11 +2203,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->io.ep_offset = musb_flat_ep_offset; musb->io.ep_select = musb_flat_ep_select; } - /* And override them with platform specific ops if specified. */ - if (musb->ops->ep_offset) - musb->io.ep_offset = musb->ops->ep_offset; - if (musb->ops->ep_select) - musb->io.ep_select = musb->ops->ep_select; /* At least tusb6010 has its own offsets */ if (musb->ops->ep_offset) @@ -2213,7 +2297,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb_generic_disable(musb); /* Init IRQ workqueue before request_irq */ - INIT_WORK(&musb->irq_work, musb_irq_work); + INIT_DELAYED_WORK(&musb->irq_work, musb_irq_work); INIT_DELAYED_WORK(&musb->deassert_reset_work, musb_deassert_reset); INIT_DELAYED_WORK(&musb->finish_resume_work, musb_host_finish_resume); @@ -2296,6 +2380,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) if (status) goto fail5; + musb->is_initialized = 1; pm_runtime_mark_last_busy(musb->controller); pm_runtime_put_autosuspend(musb->controller); @@ -2309,7 +2394,7 @@ fail4: musb_host_cleanup(musb); fail3: - cancel_work_sync(&musb->irq_work); + cancel_delayed_work_sync(&musb->irq_work); cancel_delayed_work_sync(&musb->finish_resume_work); cancel_delayed_work_sync(&musb->deassert_reset_work); if (musb->dma_controller) @@ -2376,7 +2461,7 @@ static int musb_remove(struct platform_device *pdev) */ musb_exit_debugfs(musb); - cancel_work_sync(&musb->irq_work); + cancel_delayed_work_sync(&musb->irq_work); cancel_delayed_work_sync(&musb->finish_resume_work); cancel_delayed_work_sync(&musb->deassert_reset_work); pm_runtime_get_sync(musb->controller); @@ -2562,6 +2647,7 @@ static int musb_suspend(struct device *dev) musb_platform_disable(musb); musb_generic_disable(musb); + WARN_ON(!list_empty(&musb->pending_list)); spin_lock_irqsave(&musb->lock, flags); @@ -2583,9 +2669,11 @@ static int musb_suspend(struct device *dev) static int musb_resume(struct device *dev) { - struct musb *musb = dev_to_musb(dev); - u8 devctl; - u8 mask; + struct musb *musb = dev_to_musb(dev); + unsigned long flags; + int error; + u8 devctl; + u8 mask; /* * For static cmos like DaVinci, register values were preserved @@ -2619,6 +2707,13 @@ static int musb_resume(struct device *dev) musb_start(musb); + spin_lock_irqsave(&musb->lock, flags); + error = musb_run_resume_work(musb); + if (error) + dev_err(musb->controller, "resume work failed with %i\n", + error); + spin_unlock_irqrestore(&musb->lock, flags); + return 0; } @@ -2627,14 +2722,16 @@ static int musb_runtime_suspend(struct device *dev) struct musb *musb = dev_to_musb(dev); musb_save_context(musb); + musb->is_runtime_suspended = 1; return 0; } static int musb_runtime_resume(struct device *dev) { - struct musb *musb = dev_to_musb(dev); - static int first = 1; + struct musb *musb = dev_to_musb(dev); + unsigned long flags; + int error; /* * When pm_runtime_get_sync called for the first time in driver @@ -2645,9 +2742,10 @@ static int musb_runtime_resume(struct device *dev) * Also context restore without save does not make * any sense */ - if (!first) - musb_restore_context(musb); - first = 0; + if (!musb->is_initialized) + return 0; + + musb_restore_context(musb); if (musb->need_finish_resume) { musb->need_finish_resume = 0; @@ -2655,6 +2753,14 @@ static int musb_runtime_resume(struct device *dev) msecs_to_jiffies(USB_RESUME_TIMEOUT)); } + spin_lock_irqsave(&musb->lock, flags); + error = musb_run_resume_work(musb); + if (error) + dev_err(musb->controller, "resume work failed with %i\n", + error); + musb->is_runtime_suspended = 0; + spin_unlock_irqrestore(&musb->lock, flags); + return 0; } diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 2cb88a498f8a..91817d77d59c 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -303,13 +303,14 @@ struct musb_context_registers { struct musb { /* device lock */ spinlock_t lock; + spinlock_t list_lock; /* resume work list lock */ struct musb_io io; const struct musb_platform_ops *ops; struct musb_context_registers context; irqreturn_t (*isr)(int, void *); - struct work_struct irq_work; + struct delayed_work irq_work; struct delayed_work deassert_reset_work; struct delayed_work finish_resume_work; struct delayed_work gadget_work; @@ -337,6 +338,7 @@ struct musb { struct list_head control; /* of musb_qh */ struct list_head in_bulk; /* of musb_qh */ struct list_head out_bulk; /* of musb_qh */ + struct list_head pending_list; /* pending work list */ struct timer_list otg_timer; struct notifier_block nb; @@ -379,12 +381,15 @@ struct musb { int port_mode; /* MUSB_PORT_MODE_* */ bool session; - bool quirk_invalid_vbus; + unsigned long quirk_retries; bool is_host; int a_wait_bcon; /* VBUS timeout in msecs */ unsigned long idle_timeout; /* Next timeout in jiffies */ + unsigned is_initialized:1; + unsigned is_runtime_suspended:1; + /* active means connected and not suspended */ unsigned is_active:1; @@ -540,6 +545,10 @@ extern irqreturn_t musb_interrupt(struct musb *); extern void musb_hnp_stop(struct musb *musb); +int musb_queue_resume_work(struct musb *musb, + int (*callback)(struct musb *musb, void *data), + void *data); + static inline void musb_platform_set_vbus(struct musb *musb, int is_on) { if (musb->ops->set_vbus) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 0f17d2140db6..feae1561b9ab 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -185,24 +185,19 @@ static void dsps_musb_disable(struct musb *musb) musb_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap); musb_writel(reg_base, wrp->epintr_clear, wrp->txep_bitmap | wrp->rxep_bitmap); + del_timer_sync(&glue->timer); musb_writeb(musb->mregs, MUSB_DEVCTL, 0); } -static void otg_timer(unsigned long _musb) +/* Caller must take musb->lock */ +static int dsps_check_status(struct musb *musb, void *unused) { - struct musb *musb = (void *)_musb; void __iomem *mregs = musb->mregs; struct device *dev = musb->controller; struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; u8 devctl; - unsigned long flags; int skip_session = 0; - int err; - - err = pm_runtime_get_sync(dev); - if (err < 0) - dev_err(dev, "Poll could not pm_runtime_get: %i\n", err); /* * We poll because DSPS IP's won't expose several OTG-critical @@ -212,7 +207,6 @@ static void otg_timer(unsigned long _musb) dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, usb_otg_state_string(musb->xceiv->otg->state)); - spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->otg->state) { case OTG_STATE_A_WAIT_VRISE: mod_timer(&glue->timer, jiffies + @@ -245,8 +239,30 @@ static void otg_timer(unsigned long _musb) default: break; } - spin_unlock_irqrestore(&musb->lock, flags); + return 0; +} + +static void otg_timer(unsigned long _musb) +{ + struct musb *musb = (void *)_musb; + struct device *dev = musb->controller; + unsigned long flags; + int err; + + err = pm_runtime_get(dev); + if ((err != -EINPROGRESS) && err < 0) { + dev_err(dev, "Poll could not pm_runtime_get: %i\n", err); + pm_runtime_put_noidle(dev); + + return; + } + + spin_lock_irqsave(&musb->lock, flags); + err = musb_queue_resume_work(musb, dsps_check_status, NULL); + if (err < 0) + dev_err(dev, "%s resume work: %i\n", __func__, err); + spin_unlock_irqrestore(&musb->lock, flags); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); } @@ -767,28 +783,13 @@ static int dsps_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); pm_runtime_enable(&pdev->dev); - pm_runtime_use_autosuspend(&pdev->dev); - pm_runtime_set_autosuspend_delay(&pdev->dev, 200); - - ret = pm_runtime_get_sync(&pdev->dev); - if (ret < 0) { - dev_err(&pdev->dev, "pm_runtime_get_sync FAILED"); - goto err2; - } - ret = dsps_create_musb_pdev(glue, pdev); if (ret) - goto err3; - - pm_runtime_mark_last_busy(&pdev->dev); - pm_runtime_put_autosuspend(&pdev->dev); + goto err; return 0; -err3: - pm_runtime_put_sync(&pdev->dev); -err2: - pm_runtime_dont_use_autosuspend(&pdev->dev); +err: pm_runtime_disable(&pdev->dev); return ret; } @@ -799,9 +800,6 @@ static int dsps_remove(struct platform_device *pdev) platform_device_unregister(glue->musb); - /* disable usbss clocks */ - pm_runtime_dont_use_autosuspend(&pdev->dev); - pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index bff4869a57cd..a55173c9e564 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1114,7 +1114,7 @@ static int musb_gadget_enable(struct usb_ep *ep, musb_ep->dma ? "dma, " : "", musb_ep->packet_sz); - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); fail: spin_unlock_irqrestore(&musb->lock, flags); @@ -1158,7 +1158,7 @@ static int musb_gadget_disable(struct usb_ep *ep) musb_ep->desc = NULL; musb_ep->end_point.desc = NULL; - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); spin_unlock_irqrestore(&(musb->lock), flags); @@ -1222,13 +1222,22 @@ void musb_ep_restart(struct musb *musb, struct musb_request *req) rxstate(musb, req); } +static int musb_ep_restart_resume_work(struct musb *musb, void *data) +{ + struct musb_request *req = data; + + musb_ep_restart(musb, req); + + return 0; +} + static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags) { struct musb_ep *musb_ep; struct musb_request *request; struct musb *musb; - int status = 0; + int status; unsigned long lockflags; if (!ep || !req) @@ -1245,6 +1254,17 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, if (request->ep != musb_ep) return -EINVAL; + status = pm_runtime_get(musb->controller); + if ((status != -EINPROGRESS) && status < 0) { + dev_err(musb->controller, + "pm runtime get failed in %s\n", + __func__); + pm_runtime_put_noidle(musb->controller); + + return status; + } + status = 0; + trace_musb_req_enq(request); /* request is mine now... */ @@ -1270,11 +1290,20 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req, list_add_tail(&request->list, &musb_ep->req_list); /* it this is the head of the queue, start i/o ... */ - if (!musb_ep->busy && &request->list == musb_ep->req_list.next) - musb_ep_restart(musb, request); + if (!musb_ep->busy && &request->list == musb_ep->req_list.next) { + status = musb_queue_resume_work(musb, + musb_ep_restart_resume_work, + request); + if (status < 0) + dev_err(musb->controller, "%s resume work: %i\n", + __func__, status); + } unlock: spin_unlock_irqrestore(&musb->lock, lockflags); + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); + return status; } @@ -1965,7 +1994,7 @@ static int musb_gadget_stop(struct usb_gadget *g) */ /* Force check of devctl register for PM runtime */ - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); pm_runtime_mark_last_busy(musb->controller); pm_runtime_put_autosuspend(musb->controller); diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 1ab6973d4f61..e8be8e39ab8f 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -287,6 +287,7 @@ static int omap2430_musb_init(struct musb *musb) } musb->isr = omap2430_musb_interrupt; phy_init(musb->phy); + phy_power_on(musb->phy); l = musb_readl(musb->mregs, OTG_INTERFSEL); @@ -323,8 +324,6 @@ static void omap2430_musb_enable(struct musb *musb) struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); struct omap_musb_board_data *data = pdata->board_data; - if (!WARN_ON(!musb->phy)) - phy_power_on(musb->phy); switch (glue->status) { @@ -361,9 +360,6 @@ static void omap2430_musb_disable(struct musb *musb) struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - if (!WARN_ON(!musb->phy)) - phy_power_off(musb->phy); - if (glue->status != MUSB_UNKNOWN) omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DISCONNECT); @@ -375,6 +371,7 @@ static int omap2430_musb_exit(struct musb *musb) struct omap2430_glue *glue = dev_get_drvdata(dev->parent); omap2430_low_level_exit(musb); + phy_power_off(musb->phy); phy_exit(musb->phy); musb->phy = NULL; cancel_work_sync(&glue->omap_musb_mailbox_work); @@ -516,17 +513,18 @@ static int omap2430_probe(struct platform_device *pdev) } pm_runtime_enable(glue->dev); - pm_runtime_use_autosuspend(glue->dev); - pm_runtime_set_autosuspend_delay(glue->dev, 100); ret = platform_device_add(musb); if (ret) { dev_err(&pdev->dev, "failed to register musb device\n"); - goto err2; + goto err3; } return 0; +err3: + pm_runtime_disable(glue->dev); + err2: platform_device_put(musb); @@ -538,10 +536,7 @@ static int omap2430_remove(struct platform_device *pdev) { struct omap2430_glue *glue = platform_get_drvdata(pdev); - pm_runtime_get_sync(glue->dev); platform_device_unregister(glue->musb); - pm_runtime_put_sync(glue->dev); - pm_runtime_dont_use_autosuspend(glue->dev); pm_runtime_disable(glue->dev); return 0; diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index df7c9f46be54..e85cc8e4e7a9 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -724,7 +724,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", usb_otg_state_string(musb->xceiv->otg->state), otg_stat); idle_timeout = jiffies + (1 * HZ); - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); } else /* A-dev state machine */ { dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", @@ -814,7 +814,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) break; } } - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); return idle_timeout; } @@ -864,7 +864,7 @@ static irqreturn_t tusb_musb_interrupt(int irq, void *__hci) musb_writel(tbase, TUSB_PRCM_WAKEUP_CLEAR, reg); if (reg & ~TUSB_PRCM_WNORCS) { musb->is_active = 1; - schedule_work(&musb->irq_work); + schedule_delayed_work(&musb->irq_work, 0); } dev_dbg(musb->controller, "wake %sactive %02x\n", musb->is_active ? "" : "in", reg); diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index 1d70add926f0..d544b331c9f2 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -9,6 +9,7 @@ * */ +#include <linux/delay.h> #include <linux/io.h> #include "common.h" #include "rcar3.h" @@ -35,10 +36,13 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG); - if (enable) + if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); - else + /* The controller on R-Car Gen3 needs to wait up to 45 usec */ + udelay(45); + } else { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); + } return 0; } diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 54a4de0efdba..243ac5ebe46a 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -131,6 +131,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */ { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */ { USB_DEVICE(0x10C4, 0x8946) }, /* Ketra N1 Wireless Interface */ + { USB_DEVICE(0x10C4, 0x8962) }, /* Brim Brothers charging dock */ { USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */ { USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */ { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */ @@ -1077,7 +1078,9 @@ static int cp210x_tiocmget(struct tty_struct *tty) u8 control; int result; - cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control); + result = cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control); + if (result) + return result; result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) |((control & CONTROL_RTS) ? TIOCM_RTS : 0) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index b2d767e743fc..6e9fc8bcc285 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -986,7 +986,8 @@ static const struct usb_device_id id_table_combined[] = { /* ekey Devices */ { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) }, /* Infineon Devices */ - { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) }, + { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC1798_PID, 1) }, + { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC2X7_PID, 1) }, /* GE Healthcare devices */ { USB_DEVICE(GE_HEALTHCARE_VID, GE_HEALTHCARE_NEMO_TRACKER_PID) }, /* Active Research (Actisense) devices */ @@ -1011,6 +1012,8 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(ICPDAS_VID, ICPDAS_I7561U_PID) }, { USB_DEVICE(ICPDAS_VID, ICPDAS_I7563U_PID) }, { USB_DEVICE(WICED_VID, WICED_USB20706V2_PID) }, + { USB_DEVICE(TI_VID, TI_CC3200_LAUNCHPAD_PID), + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index f87a938cf005..48ee04c94a75 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -596,6 +596,12 @@ #define STK541_PID 0x2109 /* Zigbee Controller */ /* + * Texas Instruments + */ +#define TI_VID 0x0451 +#define TI_CC3200_LAUNCHPAD_PID 0xC32A /* SimpleLink Wi-Fi CC3200 LaunchPad */ + +/* * Blackfin gnICE JTAG * http://docs.blackfin.uclinux.org/doku.php?id=hw:jtag:gnice */ @@ -626,8 +632,9 @@ /* * Infineon Technologies */ -#define INFINEON_VID 0x058b -#define INFINEON_TRIBOARD_PID 0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */ +#define INFINEON_VID 0x058b +#define INFINEON_TRIBOARD_TC1798_PID 0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */ +#define INFINEON_TRIBOARD_TC2X7_PID 0x0043 /* DAS JTAG TriBoard TC2X7 V1.0 */ /* * Acton Research Corp. diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index d213cf44a7e4..4a037b4a79cf 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1078,7 +1078,8 @@ static int usb_serial_probe(struct usb_interface *interface, serial->disconnected = 0; - usb_serial_console_init(serial->port[0]->minor); + if (num_ports > 0) + usb_serial_console_init(serial->port[0]->minor); exit: module_put(type->driver.owner); return 0; diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index ffd086733421..1a59f335b063 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -954,10 +954,15 @@ int usb_stor_CB_transport(struct scsi_cmnd *srb, struct us_data *us) /* COMMAND STAGE */ /* let's send the command via the control pipe */ + /* + * Command is sometime (f.e. after scsi_eh_prep_cmnd) on the stack. + * Stack may be vmallocated. So no DMA for us. Make a copy. + */ + memcpy(us->iobuf, srb->cmnd, srb->cmd_len); result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, - us->ifnum, srb->cmnd, srb->cmd_len); + us->ifnum, us->iobuf, srb->cmd_len); /* check the return code for the command */ usb_stor_dbg(us, "Call to usb_stor_ctrl_transfer() returned %d\n", diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 79b2b628066d..79451f7ef1b7 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -133,6 +133,13 @@ static void bytewise_xor(void *_bo, const void *_bi1, const void *_bi2, bo[itr] = bi1[itr] ^ bi2[itr]; } +/* Scratch space for MAC calculations. */ +struct wusb_mac_scratch { + struct aes_ccm_b0 b0; + struct aes_ccm_b1 b1; + struct aes_ccm_a ax; +}; + /* * CC-MAC function WUSB1.0[6.5] * @@ -197,16 +204,15 @@ static void bytewise_xor(void *_bo, const void *_bi1, const void *_bi2, * what sg[4] is for. Maybe there is a smarter way to do this. */ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, - struct crypto_cipher *tfm_aes, void *mic, + struct crypto_cipher *tfm_aes, + struct wusb_mac_scratch *scratch, + void *mic, const struct aes_ccm_nonce *n, const struct aes_ccm_label *a, const void *b, size_t blen) { int result = 0; SKCIPHER_REQUEST_ON_STACK(req, tfm_cbc); - struct aes_ccm_b0 b0; - struct aes_ccm_b1 b1; - struct aes_ccm_a ax; struct scatterlist sg[4], sg_dst; void *dst_buf; size_t dst_size; @@ -218,16 +224,17 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, * These checks should be compile time optimized out * ensure @a fills b1's mac_header and following fields */ - WARN_ON(sizeof(*a) != sizeof(b1) - sizeof(b1.la)); - WARN_ON(sizeof(b0) != sizeof(struct aes_ccm_block)); - WARN_ON(sizeof(b1) != sizeof(struct aes_ccm_block)); - WARN_ON(sizeof(ax) != sizeof(struct aes_ccm_block)); + WARN_ON(sizeof(*a) != sizeof(scratch->b1) - sizeof(scratch->b1.la)); + WARN_ON(sizeof(scratch->b0) != sizeof(struct aes_ccm_block)); + WARN_ON(sizeof(scratch->b1) != sizeof(struct aes_ccm_block)); + WARN_ON(sizeof(scratch->ax) != sizeof(struct aes_ccm_block)); result = -ENOMEM; zero_padding = blen % sizeof(struct aes_ccm_block); if (zero_padding) zero_padding = sizeof(struct aes_ccm_block) - zero_padding; - dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding; + dst_size = blen + sizeof(scratch->b0) + sizeof(scratch->b1) + + zero_padding; dst_buf = kzalloc(dst_size, GFP_KERNEL); if (!dst_buf) goto error_dst_buf; @@ -235,9 +242,9 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, memset(iv, 0, sizeof(iv)); /* Setup B0 */ - b0.flags = 0x59; /* Format B0 */ - b0.ccm_nonce = *n; - b0.lm = cpu_to_be16(0); /* WUSB1.0[6.5] sez l(m) is 0 */ + scratch->b0.flags = 0x59; /* Format B0 */ + scratch->b0.ccm_nonce = *n; + scratch->b0.lm = cpu_to_be16(0); /* WUSB1.0[6.5] sez l(m) is 0 */ /* Setup B1 * @@ -246,12 +253,12 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, * 14'--after clarification, it means to use A's contents * for MAC Header, EO, sec reserved and padding. */ - b1.la = cpu_to_be16(blen + 14); - memcpy(&b1.mac_header, a, sizeof(*a)); + scratch->b1.la = cpu_to_be16(blen + 14); + memcpy(&scratch->b1.mac_header, a, sizeof(*a)); sg_init_table(sg, ARRAY_SIZE(sg)); - sg_set_buf(&sg[0], &b0, sizeof(b0)); - sg_set_buf(&sg[1], &b1, sizeof(b1)); + sg_set_buf(&sg[0], &scratch->b0, sizeof(scratch->b0)); + sg_set_buf(&sg[1], &scratch->b1, sizeof(scratch->b1)); sg_set_buf(&sg[2], b, blen); /* 0 if well behaved :) */ sg_set_buf(&sg[3], bzero, zero_padding); @@ -276,11 +283,12 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, * POS Crypto API: size is assumed to be AES's block size. * Thanks for documenting it -- tip taken from airo.c */ - ax.flags = 0x01; /* as per WUSB 1.0 spec */ - ax.ccm_nonce = *n; - ax.counter = 0; - crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax); - bytewise_xor(mic, &ax, iv, 8); + scratch->ax.flags = 0x01; /* as per WUSB 1.0 spec */ + scratch->ax.ccm_nonce = *n; + scratch->ax.counter = 0; + crypto_cipher_encrypt_one(tfm_aes, (void *)&scratch->ax, + (void *)&scratch->ax); + bytewise_xor(mic, &scratch->ax, iv, 8); result = 8; error_cbc_crypt: kfree(dst_buf); @@ -303,6 +311,7 @@ ssize_t wusb_prf(void *out, size_t out_size, struct aes_ccm_nonce n = *_n; struct crypto_skcipher *tfm_cbc; struct crypto_cipher *tfm_aes; + struct wusb_mac_scratch *scratch; u64 sfn = 0; __le64 sfn_le; @@ -329,17 +338,25 @@ ssize_t wusb_prf(void *out, size_t out_size, printk(KERN_ERR "E: can't set AES key: %d\n", (int)result); goto error_setkey_aes; } + scratch = kmalloc(sizeof(*scratch), GFP_KERNEL); + if (!scratch) { + result = -ENOMEM; + goto error_alloc_scratch; + } for (bitr = 0; bitr < (len + 63) / 64; bitr++) { sfn_le = cpu_to_le64(sfn++); memcpy(&n.sfn, &sfn_le, sizeof(n.sfn)); /* n.sfn++... */ - result = wusb_ccm_mac(tfm_cbc, tfm_aes, out + bytes, + result = wusb_ccm_mac(tfm_cbc, tfm_aes, scratch, out + bytes, &n, a, b, blen); if (result < 0) goto error_ccm_mac; bytes += result; } result = bytes; + + kfree(scratch); +error_alloc_scratch: error_ccm_mac: error_setkey_aes: crypto_free_cipher(tfm_aes); |