diff options
Diffstat (limited to 'drivers/usb/host')
-rw-r--r-- | drivers/usb/host/ehci-hcd.c | 8 | ||||
-rw-r--r-- | drivers/usb/host/ehci-hub.c | 37 | ||||
-rw-r--r-- | drivers/usb/host/ehci-mem.c | 2 | ||||
-rw-r--r-- | drivers/usb/host/ehci-ppc-of.c | 12 | ||||
-rw-r--r-- | drivers/usb/host/ehci-q.c | 11 | ||||
-rw-r--r-- | drivers/usb/host/ehci-sched.c | 66 | ||||
-rw-r--r-- | drivers/usb/host/ehci.h | 10 | ||||
-rw-r--r-- | drivers/usb/host/ohci-hub.c | 2 | ||||
-rw-r--r-- | drivers/usb/host/ohci-pnx4008.c | 6 | ||||
-rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 70 | ||||
-rw-r--r-- | drivers/usb/host/uhci-hcd.c | 16 | ||||
-rw-r--r-- | drivers/usb/host/uhci-hub.c | 2 | ||||
-rw-r--r-- | drivers/usb/host/xhci-ext-caps.h | 7 | ||||
-rw-r--r-- | drivers/usb/host/xhci-hcd.c | 55 | ||||
-rw-r--r-- | drivers/usb/host/xhci-mem.c | 65 | ||||
-rw-r--r-- | drivers/usb/host/xhci-ring.c | 39 | ||||
-rw-r--r-- | drivers/usb/host/xhci.h | 4 |
17 files changed, 339 insertions, 73 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index f5f5601701c9..5aeabd8bda51 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -543,6 +543,7 @@ static int ehci_init(struct usb_hcd *hcd) */ ehci->periodic_size = DEFAULT_I_TDPS; INIT_LIST_HEAD(&ehci->cached_itd_list); + INIT_LIST_HEAD(&ehci->cached_sitd_list); if ((retval = ehci_mem_init(ehci, GFP_KERNEL)) < 0) return retval; @@ -785,9 +786,10 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) /* start 20 msec resume signaling from this port, * and make khubd collect PORT_STAT_C_SUSPEND to - * stop that signaling. + * stop that signaling. Use 5 ms extra for safety, + * like usb_port_resume() does. */ - ehci->reset_done [i] = jiffies + msecs_to_jiffies (20); + ehci->reset_done[i] = jiffies + msecs_to_jiffies(25); ehci_dbg (ehci, "port %d remote wakeup\n", i + 1); mod_timer(&hcd->rh_timer, ehci->reset_done[i]); } @@ -992,7 +994,7 @@ rescan: /* endpoints can be iso streams. for now, we don't * accelerate iso completions ... so spin a while. */ - if (qh->hw->hw_info1 == 0) { + if (qh->hw == NULL) { ehci_vdbg (ehci, "iso delay\n"); goto idle_timeout; } diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 1b6f1c0e5cee..6ac3976ef3b2 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -120,9 +120,26 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) del_timer_sync(&ehci->watchdog); del_timer_sync(&ehci->iaa_watchdog); - port = HCS_N_PORTS (ehci->hcs_params); spin_lock_irq (&ehci->lock); + /* Once the controller is stopped, port resumes that are already + * in progress won't complete. Hence if remote wakeup is enabled + * for the root hub and any ports are in the middle of a resume or + * remote wakeup, we must fail the suspend. + */ + if (hcd->self.root_hub->do_remote_wakeup) { + port = HCS_N_PORTS(ehci->hcs_params); + while (port--) { + if (ehci->reset_done[port] != 0) { + spin_unlock_irq(&ehci->lock); + ehci_dbg(ehci, "suspend failed because " + "port %d is resuming\n", + port + 1); + return -EBUSY; + } + } + } + /* stop schedules, clean any completed work */ if (HC_IS_RUNNING(hcd->state)) { ehci_quiesce (ehci); @@ -138,6 +155,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) */ ehci->bus_suspended = 0; ehci->owned_ports = 0; + port = HCS_N_PORTS(ehci->hcs_params); while (port--) { u32 __iomem *reg = &ehci->regs->port_status [port]; u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; @@ -274,6 +292,16 @@ static int ehci_bus_resume (struct usb_hcd *hcd) /* manually resume the ports we suspended during bus_suspend() */ i = HCS_N_PORTS (ehci->hcs_params); while (i--) { + /* clear phy low power mode before resume */ + if (ehci->has_hostpc) { + u32 __iomem *hostpc_reg = + (u32 __iomem *)((u8 *)ehci->regs + + HOSTPC0 + 4 * (i & 0xff)); + temp = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp & ~HOSTPC_PHCD, + hostpc_reg); + mdelay(5); + } temp = ehci_readl(ehci, &ehci->regs->port_status [i]); temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); if (test_bit(i, &ehci->bus_suspended) && @@ -658,6 +686,13 @@ static int ehci_hub_control ( if (temp & PORT_SUSPEND) { if ((temp & PORT_PE) == 0) goto error; + /* clear phy low power mode before resume */ + if (hostpc_reg) { + temp1 = ehci_readl(ehci, hostpc_reg); + ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, + hostpc_reg); + mdelay(5); + } /* resume signaling for 20 msec */ temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); ehci_writel(ehci, temp | PORT_RESUME, diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index aeda96e0af67..1f3f01eacaf0 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -136,7 +136,7 @@ static inline void qh_put (struct ehci_qh *qh) static void ehci_mem_cleanup (struct ehci_hcd *ehci) { - free_cached_itd_list(ehci); + free_cached_lists(ehci); if (ehci->async) qh_put (ehci->async); ehci->async = NULL; diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c index 36f96da129f5..ab26c2be366a 100644 --- a/drivers/usb/host/ehci-ppc-of.c +++ b/drivers/usb/host/ehci-ppc-of.c @@ -192,17 +192,19 @@ ehci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match) } rv = usb_add_hcd(hcd, irq, 0); - if (rv == 0) - return 0; + if (rv) + goto err_ehci; + + return 0; +err_ehci: + if (ehci->has_amcc_usb23) + iounmap(ehci->ohci_hcctrl_reg); iounmap(hcd->regs); err_ioremap: irq_dispose_mapping(irq); err_irq: release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - - if (ehci->has_amcc_usb23) - iounmap(ehci->ohci_hcctrl_reg); err_rmr: usb_put_hcd(hcd); diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 139a2cc3f641..c0d4b39a1180 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -827,9 +827,10 @@ qh_make ( * But interval 1 scheduling is simpler, and * includes high bandwidth. */ - dbg ("intr period %d uframes, NYET!", - urb->interval); - goto done; + urb->interval = 1; + } else if (qh->period > ehci->periodic_size) { + qh->period = ehci->periodic_size; + urb->interval = qh->period << 3; } } else { int think_time; @@ -852,6 +853,10 @@ qh_make ( usb_calc_bus_time (urb->dev->speed, is_input, 0, max_packet (maxp))); qh->period = urb->interval; + if (qh->period > ehci->periodic_size) { + qh->period = ehci->periodic_size; + urb->interval = qh->period; + } } } diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index a5535b5e3fe2..6746a8a794d4 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1121,8 +1121,8 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb) urb->interval); } - /* if dev->ep [epnum] is a QH, info1.maxpacket is nonzero */ - } else if (unlikely (stream->hw_info1 != 0)) { + /* if dev->ep [epnum] is a QH, hw is set */ + } else if (unlikely (stream->hw != NULL)) { ehci_dbg (ehci, "dev %s ep%d%s, not iso??\n", urb->dev->devpath, epnum, usb_pipein(urb->pipe) ? "in" : "out"); @@ -1553,13 +1553,27 @@ itd_patch( static inline void itd_link (struct ehci_hcd *ehci, unsigned frame, struct ehci_itd *itd) { - /* always prepend ITD/SITD ... only QH tree is order-sensitive */ - itd->itd_next = ehci->pshadow [frame]; - itd->hw_next = ehci->periodic [frame]; - ehci->pshadow [frame].itd = itd; + union ehci_shadow *prev = &ehci->pshadow[frame]; + __hc32 *hw_p = &ehci->periodic[frame]; + union ehci_shadow here = *prev; + __hc32 type = 0; + + /* skip any iso nodes which might belong to previous microframes */ + while (here.ptr) { + type = Q_NEXT_TYPE(ehci, *hw_p); + if (type == cpu_to_hc32(ehci, Q_TYPE_QH)) + break; + prev = periodic_next_shadow(ehci, prev, type); + hw_p = shadow_next_periodic(ehci, &here, type); + here = *prev; + } + + itd->itd_next = here; + itd->hw_next = *hw_p; + prev->itd = itd; itd->frame = frame; wmb (); - ehci->periodic[frame] = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD); + *hw_p = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD); } /* fit urb's itds into the selected schedule slot; activate as needed */ @@ -2113,13 +2127,27 @@ sitd_complete ( (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); } iso_stream_put (ehci, stream); - /* OK to recycle this SITD now that its completion callback ran. */ + done: sitd->urb = NULL; - sitd->stream = NULL; - list_move(&sitd->sitd_list, &stream->free_list); - iso_stream_put(ehci, stream); - + if (ehci->clock_frame != sitd->frame) { + /* OK to recycle this SITD now. */ + sitd->stream = NULL; + list_move(&sitd->sitd_list, &stream->free_list); + iso_stream_put(ehci, stream); + } else { + /* HW might remember this SITD, so we can't recycle it yet. + * Move it to a safe place until a new frame starts. + */ + list_move(&sitd->sitd_list, &ehci->cached_sitd_list); + if (stream->refcount == 2) { + /* If iso_stream_put() were called here, stream + * would be freed. Instead, just prevent reuse. + */ + stream->ep->hcpriv = NULL; + stream->ep = NULL; + } + } return retval; } @@ -2185,9 +2213,10 @@ done: /*-------------------------------------------------------------------------*/ -static void free_cached_itd_list(struct ehci_hcd *ehci) +static void free_cached_lists(struct ehci_hcd *ehci) { struct ehci_itd *itd, *n; + struct ehci_sitd *sitd, *sn; list_for_each_entry_safe(itd, n, &ehci->cached_itd_list, itd_list) { struct ehci_iso_stream *stream = itd->stream; @@ -2195,6 +2224,13 @@ static void free_cached_itd_list(struct ehci_hcd *ehci) list_move(&itd->itd_list, &stream->free_list); iso_stream_put(ehci, stream); } + + list_for_each_entry_safe(sitd, sn, &ehci->cached_sitd_list, sitd_list) { + struct ehci_iso_stream *stream = sitd->stream; + sitd->stream = NULL; + list_move(&sitd->sitd_list, &stream->free_list); + iso_stream_put(ehci, stream); + } } /*-------------------------------------------------------------------------*/ @@ -2221,7 +2257,7 @@ scan_periodic (struct ehci_hcd *ehci) clock_frame = -1; } if (ehci->clock_frame != clock_frame) { - free_cached_itd_list(ehci); + free_cached_lists(ehci); ehci->clock_frame = clock_frame; } clock %= mod; @@ -2384,7 +2420,7 @@ restart: clock = now; clock_frame = clock >> 3; if (ehci->clock_frame != clock_frame) { - free_cached_itd_list(ehci); + free_cached_lists(ehci); ehci->clock_frame = clock_frame; } } else { diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 2d85e21ff282..556c0b48f3ab 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -87,8 +87,9 @@ struct ehci_hcd { /* one per controller */ int next_uframe; /* scan periodic, start here */ unsigned periodic_sched; /* periodic activity count */ - /* list of itds completed while clock_frame was still active */ + /* list of itds & sitds completed while clock_frame was still active */ struct list_head cached_itd_list; + struct list_head cached_sitd_list; unsigned clock_frame; /* per root hub port */ @@ -195,7 +196,7 @@ timer_action_done (struct ehci_hcd *ehci, enum ehci_timer_action action) clear_bit (action, &ehci->actions); } -static void free_cached_itd_list(struct ehci_hcd *ehci); +static void free_cached_lists(struct ehci_hcd *ehci); /*-------------------------------------------------------------------------*/ @@ -394,9 +395,8 @@ struct ehci_iso_sched { * acts like a qh would, if EHCI had them for ISO. */ struct ehci_iso_stream { - /* first two fields match QH, but info1 == 0 */ - __hc32 hw_next; - __hc32 hw_info1; + /* first field matches ehci_hq, but is NULL */ + struct ehci_qh_hw *hw; u32 refcount; u8 bEndpointAddress; diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index 32bbce9718f0..65cac8cc8921 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -697,7 +697,7 @@ static int ohci_hub_control ( u16 wLength ) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int ports = hcd_to_bus (hcd)->root_hub->maxchild; + int ports = ohci->num_ports; u32 temp; int retval = 0; diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c index 100bf3d8437c..1f1d4fa6a778 100644 --- a/drivers/usb/host/ohci-pnx4008.c +++ b/drivers/usb/host/ohci-pnx4008.c @@ -327,7 +327,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev) } i2c_adap = i2c_get_adapter(2); memset(&i2c_info, 0, sizeof(struct i2c_board_info)); - strlcpy(i2c_info.name, "isp1301_pnx", I2C_NAME_SIZE); + strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE); isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info, normal_i2c); i2c_put_adapter(i2c_adap); @@ -411,7 +411,7 @@ out3: out2: clk_put(usb_clk); out1: - i2c_unregister_client(isp1301_i2c_client); + i2c_unregister_device(isp1301_i2c_client); isp1301_i2c_client = NULL; out_i2c_driver: i2c_del_driver(&isp1301_driver); @@ -430,7 +430,7 @@ static int usb_hcd_pnx4008_remove(struct platform_device *pdev) pnx4008_unset_usb_bits(); clk_disable(usb_clk); clk_put(usb_clk); - i2c_unregister_client(isp1301_i2c_client); + i2c_unregister_device(isp1301_i2c_client); isp1301_i2c_client = NULL; i2c_del_driver(&isp1301_driver); diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index e33d36256350..e3548ee6681c 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -35,7 +35,9 @@ #include <linux/usb.h> #include <linux/platform_device.h> #include <linux/io.h> +#include <linux/mm.h> #include <linux/irq.h> +#include <asm/cacheflush.h> #include "../core/hcd.h" #include "r8a66597.h" @@ -216,8 +218,17 @@ static void disable_controller(struct r8a66597 *r8a66597) { int port; + /* disable interrupts */ r8a66597_write(r8a66597, 0, INTENB0); - r8a66597_write(r8a66597, 0, INTSTS0); + r8a66597_write(r8a66597, 0, INTENB1); + r8a66597_write(r8a66597, 0, BRDYENB); + r8a66597_write(r8a66597, 0, BEMPENB); + r8a66597_write(r8a66597, 0, NRDYENB); + + /* clear status */ + r8a66597_write(r8a66597, 0, BRDYSTS); + r8a66597_write(r8a66597, 0, NRDYSTS); + r8a66597_write(r8a66597, 0, BEMPSTS); for (port = 0; port < r8a66597->max_root_hub; port++) r8a66597_disable_port(r8a66597, port); @@ -407,7 +418,7 @@ static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) /* this function must be called with interrupt disabled */ static void free_usb_address(struct r8a66597 *r8a66597, - struct r8a66597_device *dev) + struct r8a66597_device *dev, int reset) { int port; @@ -419,7 +430,13 @@ static void free_usb_address(struct r8a66597 *r8a66597, dev->state = USB_STATE_DEFAULT; r8a66597->address_map &= ~(1 << dev->address); dev->address = 0; - dev_set_drvdata(&dev->udev->dev, NULL); + /* + * Only when resetting USB, it is necessary to erase drvdata. When + * a usb device with usb hub is disconnect, "dev->udev" is already + * freed on usb_desconnect(). So we cannot access the data. + */ + if (reset) + dev_set_drvdata(&dev->udev->dev, NULL); list_del(&dev->device_list); kfree(dev); @@ -811,6 +828,26 @@ static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); } +static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, + int status) +__releases(r8a66597->lock) +__acquires(r8a66597->lock) +{ + if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { + void *ptr; + + for (ptr = urb->transfer_buffer; + ptr < urb->transfer_buffer + urb->transfer_buffer_length; + ptr += PAGE_SIZE) + flush_dcache_page(virt_to_page(ptr)); + } + + usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); + spin_unlock(&r8a66597->lock); + usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); + spin_lock(&r8a66597->lock); +} + /* this function must be called with interrupt disabled */ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) { @@ -831,15 +868,9 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) list_del(&td->queue); kfree(td); - if (urb) { - usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), - urb); + if (urb) + r8a66597_urb_done(r8a66597, urb, -ENODEV); - spin_unlock(&r8a66597->lock); - usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, - -ENODEV); - spin_lock(&r8a66597->lock); - } break; } } @@ -1042,7 +1073,7 @@ static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) struct r8a66597_device *dev = r8a66597->root_hub[port].dev; disable_r8a66597_pipe_all(r8a66597, dev); - free_usb_address(r8a66597, dev); + free_usb_address(r8a66597, dev, 0); start_root_hub_sampling(r8a66597, port, 0); } @@ -1276,10 +1307,7 @@ __releases(r8a66597->lock) __acquires(r8a66597->lock) if (usb_pipeisoc(urb->pipe)) urb->start_frame = r8a66597_get_frame(hcd); - usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); - spin_unlock(&r8a66597->lock); - usb_hcd_giveback_urb(hcd, urb, status); - spin_lock(&r8a66597->lock); + r8a66597_urb_done(r8a66597, urb, status); } if (restart) { @@ -2063,7 +2091,7 @@ static void update_usb_address_map(struct r8a66597 *r8a66597, spin_lock_irqsave(&r8a66597->lock, flags); dev = get_r8a66597_device(r8a66597, addr); disable_r8a66597_pipe_all(r8a66597, dev); - free_usb_address(r8a66597, dev); + free_usb_address(r8a66597, dev, 0); put_child_connect_map(r8a66597, addr); spin_unlock_irqrestore(&r8a66597->lock, flags); } @@ -2206,7 +2234,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, rh->port |= (1 << USB_PORT_FEAT_RESET); disable_r8a66597_pipe_all(r8a66597, dev); - free_usb_address(r8a66597, dev); + free_usb_address(r8a66597, dev, 1); r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port)); @@ -2470,6 +2498,12 @@ static int __devinit r8a66597_probe(struct platform_device *pdev) r8a66597->rh_timer.data = (unsigned long)r8a66597; r8a66597->reg = (unsigned long)reg; + /* make sure no interrupts are pending */ + ret = r8a66597_clock_enable(r8a66597); + if (ret < 0) + goto clean_up3; + disable_controller(r8a66597); + for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); init_timer(&r8a66597->td_timer[i]); diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 5cd0e48f67fb..09197067fe6b 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -735,6 +735,7 @@ static void uhci_stop(struct usb_hcd *hcd) uhci_hc_died(uhci); uhci_scan_schedule(uhci); spin_unlock_irq(&uhci->lock); + synchronize_irq(hcd->irq); del_timer_sync(&uhci->fsbr_timer); release_uhci(uhci); @@ -749,7 +750,20 @@ static int uhci_rh_suspend(struct usb_hcd *hcd) spin_lock_irq(&uhci->lock); if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) rc = -ESHUTDOWN; - else if (!uhci->dead) + else if (uhci->dead) + ; /* Dead controllers tell no tales */ + + /* Once the controller is stopped, port resumes that are already + * in progress won't complete. Hence if remote wakeup is enabled + * for the root hub and any ports are in the middle of a resume or + * remote wakeup, we must fail the suspend. + */ + else if (hcd->self.root_hub->do_remote_wakeup && + uhci->resuming_ports) { + dev_dbg(uhci_dev(uhci), "suspend failed because a port " + "is resuming\n"); + rc = -EBUSY; + } else suspend_rh(uhci, UHCI_RH_SUSPENDED); spin_unlock_irq(&uhci->lock); return rc; diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c index 885b585360b9..8270055848ca 100644 --- a/drivers/usb/host/uhci-hub.c +++ b/drivers/usb/host/uhci-hub.c @@ -167,7 +167,7 @@ static void uhci_check_ports(struct uhci_hcd *uhci) /* Port received a wakeup request */ set_bit(port, &uhci->resuming_ports); uhci->ports_timeout = jiffies + - msecs_to_jiffies(20); + msecs_to_jiffies(25); /* Make sure we see the port again * after the resuming period is over. */ diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index ecc131c3fe33..78c4edac1db1 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -101,12 +101,15 @@ static inline int xhci_find_next_cap_offset(void __iomem *base, int ext_offset) next = readl(base + ext_offset); - if (ext_offset == XHCI_HCC_PARAMS_OFFSET) + if (ext_offset == XHCI_HCC_PARAMS_OFFSET) { /* Find the first extended capability */ next = XHCI_HCC_EXT_CAPS(next); - else + ext_offset = 0; + } else { /* Find the next extended capability */ next = XHCI_EXT_CAPS_NEXT(next); + } + if (!next) return 0; /* diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 932f99938481..a24a92f7dbc0 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -97,6 +97,33 @@ 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) +{ + u32 temp; + int ret; + + temp = xhci_readl(xhci, &xhci->op_regs->command); + temp |= (CMD_RUN); + xhci_dbg(xhci, "// Turn on HC, cmd = 0x%x.\n", + temp); + xhci_writel(xhci, temp, &xhci->op_regs->command); + + /* + * Wait for the HCHalted Status bit to be 0 to indicate the host is + * running. + */ + ret = handshake(xhci, &xhci->op_regs->status, + STS_HALT, 0, XHCI_MAX_HALT_USEC); + if (ret == -ETIMEDOUT) + xhci_err(xhci, "Host took too long to start, " + "waited %u microseconds.\n", + XHCI_MAX_HALT_USEC); + return ret; +} + +/* * Reset a halted HC, and set the internal HC state to HC_STATE_HALT. * * This resets pipelines, timers, counters, state machines, etc. @@ -107,6 +134,7 @@ int xhci_reset(struct xhci_hcd *xhci) { u32 command; u32 state; + int ret; state = xhci_readl(xhci, &xhci->op_regs->status); if ((state & STS_HALT) == 0) { @@ -121,7 +149,17 @@ int xhci_reset(struct xhci_hcd *xhci) /* XXX: Why does EHCI set this here? Shouldn't other code do this? */ xhci_to_hcd(xhci)->state = HC_STATE_HALT; - return handshake(xhci, &xhci->op_regs->command, CMD_RESET, 0, 250 * 1000); + ret = handshake(xhci, &xhci->op_regs->command, + CMD_RESET, 0, 250 * 1000); + if (ret) + return ret; + + xhci_dbg(xhci, "Wait for controller to be ready for doorbell rings\n"); + /* + * xHCI cannot write to any doorbells or operational registers other + * than status until the "Controller Not Ready" flag is cleared. + */ + return handshake(xhci, &xhci->op_regs->status, STS_CNR, 0, 250 * 1000); } /* @@ -460,13 +498,11 @@ int xhci_run(struct usb_hcd *hcd) if (NUM_TEST_NOOPS > 0) doorbell = xhci_setup_one_noop(xhci); - temp = xhci_readl(xhci, &xhci->op_regs->command); - temp |= (CMD_RUN); - xhci_dbg(xhci, "// Turn on HC, cmd = 0x%x.\n", - temp); - xhci_writel(xhci, temp, &xhci->op_regs->command); - /* Flush PCI posted writes */ - temp = xhci_readl(xhci, &xhci->op_regs->command); + if (xhci_start(xhci)) { + xhci_halt(xhci); + return -ENODEV; + } + xhci_dbg(xhci, "// @%p = 0x%x\n", &xhci->op_regs->command, temp); if (doorbell) (*doorbell)(xhci); @@ -1157,6 +1193,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, cmd_completion = &virt_dev->cmd_completion; cmd_status = &virt_dev->cmd_status; } + init_completion(cmd_completion); if (!ctx_change) ret = xhci_queue_configure_endpoint(xhci, in_ctx->dma, @@ -1413,6 +1450,8 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, kfree(virt_ep->stopped_td); xhci_ring_cmd_db(xhci); } + virt_ep->stopped_td = NULL; + virt_ep->stopped_trb = NULL; spin_unlock_irqrestore(&xhci->lock, flags); if (ret) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index b8fd270a8b0d..dd71f02d5ff4 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -496,6 +496,19 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev, return EP_INTERVAL(interval); } +/* The "Mult" field in the endpoint context is only set for SuperSpeed devices. + * High speed endpoint descriptors can define "the number of additional + * transaction opportunities per microframe", but that goes in the Max Burst + * endpoint context field. + */ +static inline u32 xhci_get_endpoint_mult(struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + if (udev->speed != USB_SPEED_SUPER || !ep->ss_ep_comp) + return 0; + return ep->ss_ep_comp->desc.bmAttributes; +} + static inline u32 xhci_get_endpoint_type(struct usb_device *udev, struct usb_host_endpoint *ep) { @@ -526,6 +539,36 @@ static inline u32 xhci_get_endpoint_type(struct usb_device *udev, return type; } +/* Return the maximum endpoint service interval time (ESIT) payload. + * Basically, this is the maxpacket size, multiplied by the burst size + * and mult size. + */ +static inline u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci, + struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + int max_burst; + int max_packet; + + /* Only applies for interrupt or isochronous endpoints */ + if (usb_endpoint_xfer_control(&ep->desc) || + usb_endpoint_xfer_bulk(&ep->desc)) + return 0; + + if (udev->speed == USB_SPEED_SUPER) { + if (ep->ss_ep_comp) + return ep->ss_ep_comp->desc.wBytesPerInterval; + xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n"); + /* Assume no bursts, no multiple opportunities to send. */ + return ep->desc.wMaxPacketSize; + } + + max_packet = ep->desc.wMaxPacketSize & 0x3ff; + max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; + /* A 0 in max burst means 1 transfer per ESIT */ + return max_packet * (max_burst + 1); +} + int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *udev, @@ -537,6 +580,7 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_ring *ep_ring; unsigned int max_packet; unsigned int max_burst; + u32 max_esit_payload; ep_index = xhci_get_endpoint_index(&ep->desc); ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); @@ -550,6 +594,7 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state; ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep); + ep_ctx->ep_info |= EP_MULT(xhci_get_endpoint_mult(udev, ep)); /* FIXME dig Mult and streams info out of ep companion desc */ @@ -595,6 +640,26 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, default: BUG(); } + max_esit_payload = xhci_get_max_esit_payload(xhci, udev, ep); + ep_ctx->tx_info = MAX_ESIT_PAYLOAD_FOR_EP(max_esit_payload); + + /* + * XXX no idea how to calculate the average TRB buffer length for bulk + * endpoints, as the driver gives us no clue how big each scatter gather + * list entry (or buffer) is going to be. + * + * For isochronous and interrupt endpoints, we set it to the max + * available, until we have new API in the USB core to allow drivers to + * declare how much bandwidth they actually need. + * + * Normally, it would be calculated by taking the total of the buffer + * lengths in the TD and then dividing by the number of TRBs in a TD, + * including link TRBs, No-op TRBs, and Event data TRBs. Since we don't + * use Event Data TRBs, and we don't chain in a link TRB on short + * transfers, we're basically dividing by 1. + */ + ep_ctx->tx_info |= AVG_TRB_LENGTH_FOR_EP(max_esit_payload); + /* FIXME Debug endpoint context */ return 0; } diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 821b7b4709de..6416a0fca012 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -124,7 +124,7 @@ static void next_trb(struct xhci_hcd *xhci, *seg = (*seg)->next; *trb = ((*seg)->trbs); } else { - *trb = (*trb)++; + (*trb)++; } } @@ -241,10 +241,27 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, int i; union xhci_trb *enq = ring->enqueue; struct xhci_segment *enq_seg = ring->enq_seg; + struct xhci_segment *cur_seg; + unsigned int left_on_ring; /* Check if ring is empty */ - if (enq == ring->dequeue) + if (enq == ring->dequeue) { + /* Can't use link trbs */ + left_on_ring = TRBS_PER_SEGMENT - 1; + for (cur_seg = enq_seg->next; cur_seg != enq_seg; + cur_seg = cur_seg->next) + left_on_ring += TRBS_PER_SEGMENT - 1; + + /* Always need one TRB free in the ring. */ + left_on_ring -= 1; + if (num_trbs > left_on_ring) { + xhci_warn(xhci, "Not enough room on ring; " + "need %u TRBs, %u TRBs left\n", + num_trbs, left_on_ring); + return 0; + } return 1; + } /* Make sure there's an extra empty TRB available */ for (i = 0; i <= num_trbs; ++i) { if (enq == ring->dequeue) @@ -333,7 +350,8 @@ static struct xhci_segment *find_trb_seg( while (cur_seg->trbs > trb || &cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) { generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic; - if (TRB_TYPE(generic_trb->field[3]) == TRB_LINK && + if ((generic_trb->field[3] & TRB_TYPE_BITMASK) == + TRB_TYPE(TRB_LINK) && (generic_trb->field[3] & LINK_TOGGLE)) *cycle_state = ~(*cycle_state) & 0x1; cur_seg = cur_seg->next; @@ -389,7 +407,7 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, BUG(); trb = &state->new_deq_ptr->generic; - if (TRB_TYPE(trb->field[3]) == TRB_LINK && + if ((trb->field[3] & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK) && (trb->field[3] & LINK_TOGGLE)) state->new_cycle_state = ~(state->new_cycle_state) & 0x1; next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr); @@ -548,6 +566,8 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, /* Otherwise just ring the doorbell to restart the ring */ ring_ep_doorbell(xhci, slot_id, ep_index); } + ep->stopped_td = NULL; + ep->stopped_trb = NULL; /* * Drop the lock and complete the URBs in the cancelled TD list. @@ -1065,8 +1085,13 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep->stopped_td = td; ep->stopped_trb = event_trb; + xhci_queue_reset_ep(xhci, slot_id, ep_index); xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); + + ep->stopped_td = NULL; + ep->stopped_trb = NULL; + xhci_ring_cmd_db(xhci); goto td_cleanup; default: @@ -1186,8 +1211,10 @@ static int handle_tx_event(struct xhci_hcd *xhci, for (cur_trb = ep_ring->dequeue, cur_seg = ep_ring->deq_seg; cur_trb != event_trb; next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) { - if (TRB_TYPE(cur_trb->generic.field[3]) != TRB_TR_NOOP && - TRB_TYPE(cur_trb->generic.field[3]) != TRB_LINK) + if ((cur_trb->generic.field[3] & + TRB_TYPE_BITMASK) != TRB_TYPE(TRB_TR_NOOP) && + (cur_trb->generic.field[3] & + TRB_TYPE_BITMASK) != TRB_TYPE(TRB_LINK)) td->urb->actual_length += TRB_LEN(cur_trb->generic.field[2]); } diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 4b254b6fa245..db821e982100 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -609,6 +609,10 @@ struct xhci_ep_ctx { #define MAX_PACKET_MASK (0xffff << 16) #define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff) +/* tx_info bitmasks */ +#define AVG_TRB_LENGTH_FOR_EP(p) ((p) & 0xffff) +#define MAX_ESIT_PAYLOAD_FOR_EP(p) (((p) & 0xffff) << 16) + /** * struct xhci_input_control_context |