diff options
Diffstat (limited to 'drivers/usb/host')
29 files changed, 1068 insertions, 878 deletions
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 350d14fc1cc9..58321d3f314c 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -1,8 +1,9 @@ # -# Makefile for USB Host Controller Driver -# framework and drivers +# Makefile for USB Host Controller Drivers # +obj-$(CONFIG_PCI) += pci-quirks.o + obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index b948ffd94f45..af3c05eb86fc 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -182,6 +182,9 @@ static int ehci_halt (struct ehci_hcd *ehci) { u32 temp = readl (&ehci->regs->status); + /* disable any irqs left enabled by previous code */ + writel (0, &ehci->regs->intr_enable); + if ((temp & STS_HALT) != 0) return 0; @@ -297,50 +300,17 @@ static void ehci_watchdog (unsigned long param) spin_unlock_irqrestore (&ehci->lock, flags); } -#ifdef CONFIG_PCI - -/* EHCI 0.96 (and later) section 5.1 says how to kick BIOS/SMM/... - * off the controller (maybe it can boot from highspeed USB disks). +/* Reboot notifiers kick in for silicon on any bus (not just pci, etc). + * This forcibly disables dma and IRQs, helping kexec and other cases + * where the next system software may expect clean state. */ -static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap) -{ - struct pci_dev *pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); - - /* always say Linux will own the hardware */ - pci_write_config_byte(pdev, where + 3, 1); - - /* maybe wait a while for BIOS to respond */ - if (cap & (1 << 16)) { - int msec = 5000; - - do { - msleep(10); - msec -= 10; - pci_read_config_dword(pdev, where, &cap); - } while ((cap & (1 << 16)) && msec); - if (cap & (1 << 16)) { - ehci_err(ehci, "BIOS handoff failed (%d, %08x)\n", - where, cap); - // some BIOS versions seem buggy... - // return 1; - ehci_warn (ehci, "continuing after BIOS bug...\n"); - /* disable all SMIs, and clear "BIOS owns" flag */ - pci_write_config_dword(pdev, where + 4, 0); - pci_write_config_byte(pdev, where + 2, 0); - } else - ehci_dbg(ehci, "BIOS handoff succeeded\n"); - } - return 0; -} - -#endif - static int ehci_reboot (struct notifier_block *self, unsigned long code, void *null) { struct ehci_hcd *ehci; ehci = container_of (self, struct ehci_hcd, reboot_notifier); + (void) ehci_halt (ehci); /* make BIOS/etc use companion controller during reboot */ writel (0, &ehci->regs->configured_flag); @@ -363,156 +333,90 @@ static void ehci_port_power (struct ehci_hcd *ehci, int is_on) msleep(20); } +/*-------------------------------------------------------------------------*/ + +/* + * ehci_work is called from some interrupts, timers, and so on. + * it calls driver completion functions, after dropping ehci->lock. + */ +static void ehci_work (struct ehci_hcd *ehci, struct pt_regs *regs) +{ + timer_action_done (ehci, TIMER_IO_WATCHDOG); + if (ehci->reclaim_ready) + end_unlink_async (ehci, regs); + + /* another CPU may drop ehci->lock during a schedule scan while + * it reports urb completions. this flag guards against bogus + * attempts at re-entrant schedule scanning. + */ + if (ehci->scanning) + return; + ehci->scanning = 1; + scan_async (ehci, regs); + if (ehci->next_uframe != -1) + scan_periodic (ehci, regs); + ehci->scanning = 0; -/* called by khubd or root hub init threads */ + /* the IO watchdog guards against hardware or driver bugs that + * misplace IRQs, and should let us run completely without IRQs. + * such lossage has been observed on both VT6202 and VT8235. + */ + if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state) && + (ehci->async->qh_next.ptr != NULL || + ehci->periodic_sched != 0)) + timer_action (ehci, TIMER_IO_WATCHDOG); +} -static int ehci_hc_reset (struct usb_hcd *hcd) +static void ehci_stop (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); - u32 temp; - unsigned count = 256/4; - spin_lock_init (&ehci->lock); + ehci_dbg (ehci, "stop\n"); - ehci->caps = hcd->regs; - ehci->regs = hcd->regs + HC_LENGTH (readl (&ehci->caps->hc_capbase)); - dbg_hcs_params (ehci, "reset"); - dbg_hcc_params (ehci, "reset"); + /* Turn off port power on all root hub ports. */ + ehci_port_power (ehci, 0); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl (&ehci->caps->hcs_params); + /* no more interrupts ... */ + del_timer_sync (&ehci->watchdog); -#ifdef CONFIG_PCI - if (hcd->self.controller->bus == &pci_bus_type) { - struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + spin_lock_irq(&ehci->lock); + if (HC_IS_RUNNING (hcd->state)) + ehci_quiesce (ehci); - switch (pdev->vendor) { - case PCI_VENDOR_ID_TDI: - if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { - ehci->is_tdi_rh_tt = 1; - tdi_reset (ehci); - } - break; - case PCI_VENDOR_ID_AMD: - /* AMD8111 EHCI doesn't work, according to AMD errata */ - if (pdev->device == 0x7463) { - ehci_info (ehci, "ignoring AMD8111 (errata)\n"); - return -EIO; - } - break; - case PCI_VENDOR_ID_NVIDIA: - /* NVidia reports that certain chips don't handle - * QH, ITD, or SITD addresses above 2GB. (But TD, - * data buffer, and periodic schedule are normal.) - */ - switch (pdev->device) { - case 0x003c: /* MCP04 */ - case 0x005b: /* CK804 */ - case 0x00d8: /* CK8 */ - case 0x00e8: /* CK8S */ - if (pci_set_consistent_dma_mask(pdev, - DMA_31BIT_MASK) < 0) - ehci_warn (ehci, "can't enable NVidia " - "workaround for >2GB RAM\n"); - break; - } - break; - } + ehci_reset (ehci); + writel (0, &ehci->regs->intr_enable); + spin_unlock_irq(&ehci->lock); - /* optional debug port, normally in the first BAR */ - temp = pci_find_capability (pdev, 0x0a); - if (temp) { - pci_read_config_dword(pdev, temp, &temp); - temp >>= 16; - if ((temp & (3 << 13)) == (1 << 13)) { - temp &= 0x1fff; - ehci->debug = hcd->regs + temp; - temp = readl (&ehci->debug->control); - ehci_info (ehci, "debug port %d%s\n", - HCS_DEBUG_PORT(ehci->hcs_params), - (temp & DBGP_ENABLED) - ? " IN USE" - : ""); - if (!(temp & DBGP_ENABLED)) - ehci->debug = NULL; - } - } + /* let companion controllers work when we aren't */ + writel (0, &ehci->regs->configured_flag); + unregister_reboot_notifier (&ehci->reboot_notifier); - temp = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params)); - } else - temp = 0; - - /* EHCI 0.96 and later may have "extended capabilities" */ - while (temp && count--) { - u32 cap; - - pci_read_config_dword (to_pci_dev(hcd->self.controller), - temp, &cap); - ehci_dbg (ehci, "capability %04x at %02x\n", cap, temp); - switch (cap & 0xff) { - case 1: /* BIOS/SMM/... handoff */ - if (bios_handoff (ehci, temp, cap) != 0) - return -EOPNOTSUPP; - break; - case 0: /* illegal reserved capability */ - ehci_warn (ehci, "illegal capability!\n"); - cap = 0; - /* FALLTHROUGH */ - default: /* unknown */ - break; - } - temp = (cap >> 8) & 0xff; - } - if (!count) { - ehci_err (ehci, "bogus capabilities ... PCI problems!\n"); - return -EIO; - } - if (ehci_is_TDI(ehci)) - ehci_reset (ehci); -#endif + remove_debug_files (ehci); - ehci_port_power (ehci, 0); + /* root hub is shut down separately (first, when possible) */ + spin_lock_irq (&ehci->lock); + if (ehci->async) + ehci_work (ehci, NULL); + spin_unlock_irq (&ehci->lock); + ehci_mem_cleanup (ehci); - /* at least the Genesys GL880S needs fixup here */ - temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); - temp &= 0x0f; - if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) { - ehci_dbg (ehci, "bogus port configuration: " - "cc=%d x pcc=%d < ports=%d\n", - HCS_N_CC(ehci->hcs_params), - HCS_N_PCC(ehci->hcs_params), - HCS_N_PORTS(ehci->hcs_params)); - -#ifdef CONFIG_PCI - if (hcd->self.controller->bus == &pci_bus_type) { - struct pci_dev *pdev; - - pdev = to_pci_dev(hcd->self.controller); - switch (pdev->vendor) { - case 0x17a0: /* GENESYS */ - /* GL880S: should be PORTS=2 */ - temp |= (ehci->hcs_params & ~0xf); - ehci->hcs_params = temp; - break; - case PCI_VENDOR_ID_NVIDIA: - /* NF4: should be PCC=10 */ - break; - } - } +#ifdef EHCI_STATS + ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n", + ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, + ehci->stats.lost_iaa); + ehci_dbg (ehci, "complete %ld unlink %ld\n", + ehci->stats.complete, ehci->stats.unlink); #endif - } - /* force HC to halt state */ - return ehci_halt (ehci); + dbg_status (ehci, "ehci_stop completed", readl (&ehci->regs->status)); } -static int ehci_start (struct usb_hcd *hcd) +static int ehci_run (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); u32 temp; int retval; u32 hcc_params; - u8 sbrn = 0; int first; /* skip some things on restart paths */ @@ -551,27 +455,6 @@ static int ehci_start (struct usb_hcd *hcd) } writel (ehci->periodic_dma, &ehci->regs->frame_list); -#ifdef CONFIG_PCI - if (hcd->self.controller->bus == &pci_bus_type) { - struct pci_dev *pdev; - u16 port_wake; - - pdev = to_pci_dev(hcd->self.controller); - - /* Serial Bus Release Number is at PCI 0x60 offset */ - pci_read_config_byte(pdev, 0x60, &sbrn); - - /* port wake capability, reported by boot firmware */ - pci_read_config_word(pdev, 0x62, &port_wake); - hcd->can_wakeup = (port_wake & 1) != 0; - - /* help hc dma work well with cachelines */ - retval = pci_set_mwi(pdev); - if (retval) - ehci_dbg(ehci, "unable to enable MWI - not fatal.\n"); - } -#endif - /* * dedicate a qh for the async ring head, since we couldn't unlink * a 'real' qh without stopping the async schedule [4.8]. use it @@ -667,7 +550,7 @@ static int ehci_start (struct usb_hcd *hcd) temp = HC_VERSION(readl (&ehci->caps->hc_capbase)); ehci_info (ehci, "USB %x.%x %s, EHCI %x.%02x, driver %s\n", - ((sbrn & 0xf0)>>4), (sbrn & 0x0f), + ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f), first ? "initialized" : "restarted", temp >> 8, temp & 0xff, DRIVER_VERSION); @@ -679,188 +562,6 @@ static int ehci_start (struct usb_hcd *hcd) return 0; } -/* always called by thread; normally rmmod */ - -static void ehci_stop (struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci (hcd); - - ehci_dbg (ehci, "stop\n"); - - /* Turn off port power on all root hub ports. */ - ehci_port_power (ehci, 0); - - /* no more interrupts ... */ - del_timer_sync (&ehci->watchdog); - - spin_lock_irq(&ehci->lock); - if (HC_IS_RUNNING (hcd->state)) - ehci_quiesce (ehci); - - ehci_reset (ehci); - writel (0, &ehci->regs->intr_enable); - spin_unlock_irq(&ehci->lock); - - /* let companion controllers work when we aren't */ - writel (0, &ehci->regs->configured_flag); - unregister_reboot_notifier (&ehci->reboot_notifier); - - remove_debug_files (ehci); - - /* root hub is shut down separately (first, when possible) */ - spin_lock_irq (&ehci->lock); - if (ehci->async) - ehci_work (ehci, NULL); - spin_unlock_irq (&ehci->lock); - ehci_mem_cleanup (ehci); - -#ifdef EHCI_STATS - ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n", - ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, - ehci->stats.lost_iaa); - ehci_dbg (ehci, "complete %ld unlink %ld\n", - ehci->stats.complete, ehci->stats.unlink); -#endif - - dbg_status (ehci, "ehci_stop completed", readl (&ehci->regs->status)); -} - -static int ehci_get_frame (struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci (hcd); - return (readl (&ehci->regs->frame_index) >> 3) % ehci->periodic_size; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_PM - -/* suspend/resume, section 4.3 */ - -/* These routines rely on the bus (pci, platform, etc) - * to handle powerdown and wakeup, and currently also on - * transceivers that don't need any software attention to set up - * the right sort of wakeup. - */ - -static int ehci_suspend (struct usb_hcd *hcd, pm_message_t message) -{ - struct ehci_hcd *ehci = hcd_to_ehci (hcd); - - if (time_before (jiffies, ehci->next_statechange)) - msleep (100); - -#ifdef CONFIG_USB_SUSPEND - (void) usb_suspend_device (hcd->self.root_hub, message); -#else - usb_lock_device (hcd->self.root_hub); - (void) ehci_hub_suspend (hcd); - usb_unlock_device (hcd->self.root_hub); -#endif - - // save (PCI) FLADJ in case of Vaux power loss - // ... we'd only use it to handle clock skew - - return 0; -} - -static int ehci_resume (struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci (hcd); - unsigned port; - struct usb_device *root = hcd->self.root_hub; - int retval = -EINVAL; - - // maybe restore (PCI) FLADJ - - if (time_before (jiffies, ehci->next_statechange)) - msleep (100); - - /* If any port is suspended (or owned by the companion), - * we know we can/must resume the HC (and mustn't reset it). - */ - for (port = HCS_N_PORTS (ehci->hcs_params); port > 0; ) { - u32 status; - port--; - status = readl (&ehci->regs->port_status [port]); - if (!(status & PORT_POWER)) - continue; - if (status & (PORT_SUSPEND | PORT_OWNER)) { - down (&hcd->self.root_hub->serialize); - retval = ehci_hub_resume (hcd); - up (&hcd->self.root_hub->serialize); - break; - } - if (!root->children [port]) - continue; - dbg_port (ehci, __FUNCTION__, port + 1, status); - usb_set_device_state (root->children[port], - USB_STATE_NOTATTACHED); - } - - /* Else reset, to cope with power loss or flush-to-storage - * style "resume" having activated BIOS during reboot. - */ - if (port == 0) { - (void) ehci_halt (ehci); - (void) ehci_reset (ehci); - (void) ehci_hc_reset (hcd); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq (&ehci->lock); - if (ehci->reclaim) - ehci->reclaim_ready = 1; - ehci_work (ehci, NULL); - spin_unlock_irq (&ehci->lock); - - /* restart; khubd will disconnect devices */ - retval = ehci_start (hcd); - - /* here we "know" root ports should always stay powered; - * but some controllers may lose all power. - */ - ehci_port_power (ehci, 1); - } - - return retval; -} - -#endif - -/*-------------------------------------------------------------------------*/ - -/* - * ehci_work is called from some interrupts, timers, and so on. - * it calls driver completion functions, after dropping ehci->lock. - */ -static void ehci_work (struct ehci_hcd *ehci, struct pt_regs *regs) -{ - timer_action_done (ehci, TIMER_IO_WATCHDOG); - if (ehci->reclaim_ready) - end_unlink_async (ehci, regs); - - /* another CPU may drop ehci->lock during a schedule scan while - * it reports urb completions. this flag guards against bogus - * attempts at re-entrant schedule scanning. - */ - if (ehci->scanning) - return; - ehci->scanning = 1; - scan_async (ehci, regs); - if (ehci->next_uframe != -1) - scan_periodic (ehci, regs); - ehci->scanning = 0; - - /* the IO watchdog guards against hardware or driver bugs that - * misplace IRQs, and should let us run completely without IRQs. - * such lossage has been observed on both VT6202 and VT8235. - */ - if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state) && - (ehci->async->qh_next.ptr != NULL || - ehci->periodic_sched != 0)) - timer_action (ehci, TIMER_IO_WATCHDOG); -} - /*-------------------------------------------------------------------------*/ static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs) @@ -983,7 +684,7 @@ static int ehci_urb_enqueue ( struct usb_hcd *hcd, struct usb_host_endpoint *ep, struct urb *urb, - unsigned mem_flags + gfp_t mem_flags ) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); struct list_head qtd_list; @@ -1171,106 +872,24 @@ done: return; } -/*-------------------------------------------------------------------------*/ - -static const struct hc_driver ehci_driver = { - .description = hcd_name, - .product_desc = "EHCI Host Controller", - .hcd_priv_size = sizeof(struct ehci_hcd), - - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * basic lifecycle operations - */ - .reset = ehci_hc_reset, - .start = ehci_start, -#ifdef CONFIG_PM - .suspend = ehci_suspend, - .resume = ehci_resume, -#endif - .stop = ehci_stop, - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, - - /* - * scheduling support - */ - .get_frame_number = ehci_get_frame, - - /* - * root hub support - */ - .hub_status_data = ehci_hub_status_data, - .hub_control = ehci_hub_control, - .hub_suspend = ehci_hub_suspend, - .hub_resume = ehci_hub_resume, -}; +static int ehci_get_frame (struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci (hcd); + return (readl (&ehci->regs->frame_index) >> 3) % ehci->periodic_size; +} /*-------------------------------------------------------------------------*/ -/* EHCI 1.0 doesn't require PCI */ - -#ifdef CONFIG_PCI - -/* PCI driver selection metadata; PCI hotplugging uses this */ -static const struct pci_device_id pci_ids [] = { { - /* handle any USB 2.0 EHCI controller */ - PCI_DEVICE_CLASS(((PCI_CLASS_SERIAL_USB << 8) | 0x20), ~0), - .driver_data = (unsigned long) &ehci_driver, - }, - { /* end: all zeroes */ } -}; -MODULE_DEVICE_TABLE (pci, pci_ids); - -/* pci driver glue; this is a "new style" PCI driver module */ -static struct pci_driver ehci_pci_driver = { - .name = (char *) hcd_name, - .id_table = pci_ids, - - .probe = usb_hcd_pci_probe, - .remove = usb_hcd_pci_remove, - -#ifdef CONFIG_PM - .suspend = usb_hcd_pci_suspend, - .resume = usb_hcd_pci_resume, -#endif -}; - -#endif /* PCI */ - - #define DRIVER_INFO DRIVER_VERSION " " DRIVER_DESC MODULE_DESCRIPTION (DRIVER_INFO); MODULE_AUTHOR (DRIVER_AUTHOR); MODULE_LICENSE ("GPL"); -static int __init init (void) -{ - if (usb_disabled()) - return -ENODEV; - - pr_debug ("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n", - hcd_name, - sizeof (struct ehci_qh), sizeof (struct ehci_qtd), - sizeof (struct ehci_itd), sizeof (struct ehci_sitd)); - - return pci_register_driver (&ehci_pci_driver); -} -module_init (init); +#ifdef CONFIG_PCI +#include "ehci-pci.c" +#endif -static void __exit cleanup (void) -{ - pci_unregister_driver (&ehci_pci_driver); -} -module_exit (cleanup); +#if !defined(CONFIG_PCI) +#error "missing bus glue for ehci-hcd" +#endif diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 18d3f2270316..88cb4ada686e 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -30,7 +30,7 @@ #ifdef CONFIG_PM -static int ehci_hub_suspend (struct usb_hcd *hcd) +static int ehci_bus_suspend (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); int port; @@ -83,7 +83,7 @@ static int ehci_hub_suspend (struct usb_hcd *hcd) /* caller has locked the root hub, and should reset/reinit on error */ -static int ehci_hub_resume (struct usb_hcd *hcd) +static int ehci_bus_resume (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); u32 temp; @@ -159,8 +159,8 @@ static int ehci_hub_resume (struct usb_hcd *hcd) #else -#define ehci_hub_suspend NULL -#define ehci_hub_resume NULL +#define ehci_bus_suspend NULL +#define ehci_bus_resume NULL #endif /* CONFIG_PM */ diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index 5c38ad869485..91c2ab43cbcc 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -45,7 +45,7 @@ static inline void ehci_qtd_init (struct ehci_qtd *qtd, dma_addr_t dma) INIT_LIST_HEAD (&qtd->qtd_list); } -static struct ehci_qtd *ehci_qtd_alloc (struct ehci_hcd *ehci, int flags) +static struct ehci_qtd *ehci_qtd_alloc (struct ehci_hcd *ehci, gfp_t flags) { struct ehci_qtd *qtd; dma_addr_t dma; @@ -79,7 +79,7 @@ static void qh_destroy (struct kref *kref) dma_pool_free (ehci->qh_pool, qh, qh->qh_dma); } -static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, int flags) +static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, gfp_t flags) { struct ehci_qh *qh; dma_addr_t dma; @@ -161,7 +161,7 @@ static void ehci_mem_cleanup (struct ehci_hcd *ehci) } /* remember to add cleanup code (above) if you add anything here */ -static int ehci_mem_init (struct ehci_hcd *ehci, int flags) +static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) { int i; diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c new file mode 100644 index 000000000000..145008853966 --- /dev/null +++ b/drivers/usb/host/ehci-pci.c @@ -0,0 +1,415 @@ +/* + * EHCI HCD (Host Controller Driver) PCI Bus Glue. + * + * Copyright (c) 2000-2004 by David Brownell + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef CONFIG_PCI +#error "This file is PCI bus glue. CONFIG_PCI must be defined." +#endif + +/*-------------------------------------------------------------------------*/ + +/* EHCI 0.96 (and later) section 5.1 says how to kick BIOS/SMM/... + * off the controller (maybe it can boot from highspeed USB disks). + */ +static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap) +{ + struct pci_dev *pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); + + /* always say Linux will own the hardware */ + pci_write_config_byte(pdev, where + 3, 1); + + /* maybe wait a while for BIOS to respond */ + if (cap & (1 << 16)) { + int msec = 5000; + + do { + msleep(10); + msec -= 10; + pci_read_config_dword(pdev, where, &cap); + } while ((cap & (1 << 16)) && msec); + if (cap & (1 << 16)) { + ehci_err(ehci, "BIOS handoff failed (%d, %08x)\n", + where, cap); + // some BIOS versions seem buggy... + // return 1; + ehci_warn (ehci, "continuing after BIOS bug...\n"); + /* disable all SMIs, and clear "BIOS owns" flag */ + pci_write_config_dword(pdev, where + 4, 0); + pci_write_config_byte(pdev, where + 2, 0); + } else + ehci_dbg(ehci, "BIOS handoff succeeded\n"); + } + return 0; +} + +/* called by khubd or root hub init threads */ +static int ehci_pci_reset (struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci (hcd); + u32 temp; + unsigned count = 256/4; + + spin_lock_init (&ehci->lock); + + ehci->caps = hcd->regs; + ehci->regs = hcd->regs + HC_LENGTH (readl (&ehci->caps->hc_capbase)); + dbg_hcs_params (ehci, "reset"); + dbg_hcc_params (ehci, "reset"); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = readl (&ehci->caps->hcs_params); + + if (hcd->self.controller->bus == &pci_bus_type) { + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + + switch (pdev->vendor) { + case PCI_VENDOR_ID_TDI: + if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { + ehci->is_tdi_rh_tt = 1; + tdi_reset (ehci); + } + break; + case PCI_VENDOR_ID_AMD: + /* AMD8111 EHCI doesn't work, according to AMD errata */ + if (pdev->device == 0x7463) { + ehci_info (ehci, "ignoring AMD8111 (errata)\n"); + return -EIO; + } + break; + case PCI_VENDOR_ID_NVIDIA: + /* NVidia reports that certain chips don't handle + * QH, ITD, or SITD addresses above 2GB. (But TD, + * data buffer, and periodic schedule are normal.) + */ + switch (pdev->device) { + case 0x003c: /* MCP04 */ + case 0x005b: /* CK804 */ + case 0x00d8: /* CK8 */ + case 0x00e8: /* CK8S */ + if (pci_set_consistent_dma_mask(pdev, + DMA_31BIT_MASK) < 0) + ehci_warn (ehci, "can't enable NVidia " + "workaround for >2GB RAM\n"); + break; + } + break; + } + + /* optional debug port, normally in the first BAR */ + temp = pci_find_capability (pdev, 0x0a); + if (temp) { + pci_read_config_dword(pdev, temp, &temp); + temp >>= 16; + if ((temp & (3 << 13)) == (1 << 13)) { + temp &= 0x1fff; + ehci->debug = hcd->regs + temp; + temp = readl (&ehci->debug->control); + ehci_info (ehci, "debug port %d%s\n", + HCS_DEBUG_PORT(ehci->hcs_params), + (temp & DBGP_ENABLED) + ? " IN USE" + : ""); + if (!(temp & DBGP_ENABLED)) + ehci->debug = NULL; + } + } + + temp = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params)); + } else + temp = 0; + + /* EHCI 0.96 and later may have "extended capabilities" */ + while (temp && count--) { + u32 cap; + + pci_read_config_dword (to_pci_dev(hcd->self.controller), + temp, &cap); + ehci_dbg (ehci, "capability %04x at %02x\n", cap, temp); + switch (cap & 0xff) { + case 1: /* BIOS/SMM/... handoff */ + if (bios_handoff (ehci, temp, cap) != 0) + return -EOPNOTSUPP; + break; + case 0: /* illegal reserved capability */ + ehci_warn (ehci, "illegal capability!\n"); + cap = 0; + /* FALLTHROUGH */ + default: /* unknown */ + break; + } + temp = (cap >> 8) & 0xff; + } + if (!count) { + ehci_err (ehci, "bogus capabilities ... PCI problems!\n"); + return -EIO; + } + if (ehci_is_TDI(ehci)) + ehci_reset (ehci); + + ehci_port_power (ehci, 0); + + /* at least the Genesys GL880S needs fixup here */ + temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); + temp &= 0x0f; + if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) { + ehci_dbg (ehci, "bogus port configuration: " + "cc=%d x pcc=%d < ports=%d\n", + HCS_N_CC(ehci->hcs_params), + HCS_N_PCC(ehci->hcs_params), + HCS_N_PORTS(ehci->hcs_params)); + + if (hcd->self.controller->bus == &pci_bus_type) { + struct pci_dev *pdev; + + pdev = to_pci_dev(hcd->self.controller); + switch (pdev->vendor) { + case 0x17a0: /* GENESYS */ + /* GL880S: should be PORTS=2 */ + temp |= (ehci->hcs_params & ~0xf); + ehci->hcs_params = temp; + break; + case PCI_VENDOR_ID_NVIDIA: + /* NF4: should be PCC=10 */ + break; + } + } + } + + /* force HC to halt state */ + return ehci_halt (ehci); +} + +static int ehci_pci_start (struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci (hcd); + int result = 0; + + if (hcd->self.controller->bus == &pci_bus_type) { + struct pci_dev *pdev; + u16 port_wake; + + pdev = to_pci_dev(hcd->self.controller); + + /* Serial Bus Release Number is at PCI 0x60 offset */ + pci_read_config_byte(pdev, 0x60, &ehci->sbrn); + + /* port wake capability, reported by boot firmware */ + pci_read_config_word(pdev, 0x62, &port_wake); + hcd->can_wakeup = (port_wake & 1) != 0; + + /* help hc dma work well with cachelines */ + result = pci_set_mwi(pdev); + if (result) + ehci_dbg(ehci, "unable to enable MWI - not fatal.\n"); + } + + return ehci_run (hcd); +} + +/* always called by thread; normally rmmod */ + +static void ehci_pci_stop (struct usb_hcd *hcd) +{ + ehci_stop (hcd); +} + +/*-------------------------------------------------------------------------*/ + +#ifdef CONFIG_PM + +/* suspend/resume, section 4.3 */ + +/* These routines rely on the bus (pci, platform, etc) + * to handle powerdown and wakeup, and currently also on + * transceivers that don't need any software attention to set up + * the right sort of wakeup. + */ + +static int ehci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) +{ + struct ehci_hcd *ehci = hcd_to_ehci (hcd); + + if (time_before (jiffies, ehci->next_statechange)) + msleep (100); + +#ifdef CONFIG_USB_SUSPEND + (void) usb_suspend_device (hcd->self.root_hub); +#else + usb_lock_device (hcd->self.root_hub); + (void) ehci_bus_suspend (hcd); + usb_unlock_device (hcd->self.root_hub); +#endif + + // save (PCI) FLADJ in case of Vaux power loss + // ... we'd only use it to handle clock skew + + return 0; +} + +static int ehci_pci_resume (struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci (hcd); + unsigned port; + struct usb_device *root = hcd->self.root_hub; + int retval = -EINVAL; + + // maybe restore (PCI) FLADJ + + if (time_before (jiffies, ehci->next_statechange)) + msleep (100); + + /* If any port is suspended (or owned by the companion), + * we know we can/must resume the HC (and mustn't reset it). + */ + for (port = HCS_N_PORTS (ehci->hcs_params); port > 0; ) { + u32 status; + port--; + status = readl (&ehci->regs->port_status [port]); + if (!(status & PORT_POWER)) + continue; + if (status & (PORT_SUSPEND | PORT_OWNER)) { + down (&hcd->self.root_hub->serialize); + retval = ehci_bus_resume (hcd); + up (&hcd->self.root_hub->serialize); + break; + } + if (!root->children [port]) + continue; + dbg_port (ehci, __FUNCTION__, port + 1, status); + usb_set_device_state (root->children[port], + USB_STATE_NOTATTACHED); + } + + /* Else reset, to cope with power loss or flush-to-storage + * style "resume" having activated BIOS during reboot. + */ + if (port == 0) { + (void) ehci_halt (ehci); + (void) ehci_reset (ehci); + (void) ehci_pci_reset (hcd); + + /* emptying the schedule aborts any urbs */ + spin_lock_irq (&ehci->lock); + if (ehci->reclaim) + ehci->reclaim_ready = 1; + ehci_work (ehci, NULL); + spin_unlock_irq (&ehci->lock); + + /* restart; khubd will disconnect devices */ + retval = ehci_run (hcd); + + /* here we "know" root ports should always stay powered; + * but some controllers may lose all power. + */ + ehci_port_power (ehci, 1); + } + + return retval; +} +#endif + +static const struct hc_driver ehci_pci_hc_driver = { + .description = hcd_name, + .product_desc = "EHCI Host Controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_pci_reset, + .start = ehci_pci_start, +#ifdef CONFIG_PM + .suspend = ehci_pci_suspend, + .resume = ehci_pci_resume, +#endif + .stop = ehci_pci_stop, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, +}; + +/*-------------------------------------------------------------------------*/ + +/* PCI driver selection metadata; PCI hotplugging uses this */ +static const struct pci_device_id pci_ids [] = { { + /* handle any USB 2.0 EHCI controller */ + PCI_DEVICE_CLASS(((PCI_CLASS_SERIAL_USB << 8) | 0x20), ~0), + .driver_data = (unsigned long) &ehci_pci_hc_driver, + }, + { /* end: all zeroes */ } +}; +MODULE_DEVICE_TABLE (pci, pci_ids); + +/* pci driver glue; this is a "new style" PCI driver module */ +static struct pci_driver ehci_pci_driver = { + .name = (char *) hcd_name, + .id_table = pci_ids, + .owner = THIS_MODULE, + + .probe = usb_hcd_pci_probe, + .remove = usb_hcd_pci_remove, + +#ifdef CONFIG_PM + .suspend = usb_hcd_pci_suspend, + .resume = usb_hcd_pci_resume, +#endif +}; + +static int __init ehci_hcd_pci_init (void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_debug ("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n", + hcd_name, + sizeof (struct ehci_qh), sizeof (struct ehci_qtd), + sizeof (struct ehci_itd), sizeof (struct ehci_sitd)); + + return pci_register_driver (&ehci_pci_driver); +} +module_init (ehci_hcd_pci_init); + +static void __exit ehci_hcd_pci_cleanup (void) +{ + pci_unregister_driver (&ehci_pci_driver); +} +module_exit (ehci_hcd_pci_cleanup); diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 940d38ca7d91..5bb872c3496d 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -477,7 +477,7 @@ qh_urb_transaction ( struct ehci_hcd *ehci, struct urb *urb, struct list_head *head, - int flags + gfp_t flags ) { struct ehci_qtd *qtd, *qtd_prev; dma_addr_t buf; @@ -629,7 +629,7 @@ static struct ehci_qh * qh_make ( struct ehci_hcd *ehci, struct urb *urb, - int flags + gfp_t flags ) { struct ehci_qh *qh = ehci_qh_alloc (ehci, flags); u32 info1 = 0, info2 = 0; @@ -906,7 +906,7 @@ submit_async ( struct usb_host_endpoint *ep, struct urb *urb, struct list_head *qtd_list, - unsigned mem_flags + gfp_t mem_flags ) { struct ehci_qtd *qtd; int epnum; diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index ccc7300baa6d..f0c8aa1ccd5d 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -589,7 +589,7 @@ static int intr_submit ( struct usb_host_endpoint *ep, struct urb *urb, struct list_head *qtd_list, - unsigned mem_flags + gfp_t mem_flags ) { unsigned epnum; unsigned long flags; @@ -634,7 +634,7 @@ done: /* ehci_iso_stream ops work with both ITD and SITD */ static struct ehci_iso_stream * -iso_stream_alloc (unsigned mem_flags) +iso_stream_alloc (gfp_t mem_flags) { struct ehci_iso_stream *stream; @@ -851,7 +851,7 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb) /* ehci_iso_sched ops can be ITD-only or SITD-only */ static struct ehci_iso_sched * -iso_sched_alloc (unsigned packets, unsigned mem_flags) +iso_sched_alloc (unsigned packets, gfp_t mem_flags) { struct ehci_iso_sched *iso_sched; int size = sizeof *iso_sched; @@ -924,7 +924,7 @@ itd_urb_transaction ( struct ehci_iso_stream *stream, struct ehci_hcd *ehci, struct urb *urb, - unsigned mem_flags + gfp_t mem_flags ) { struct ehci_itd *itd; @@ -1418,7 +1418,7 @@ itd_complete ( /*-------------------------------------------------------------------------*/ static int itd_submit (struct ehci_hcd *ehci, struct urb *urb, - unsigned mem_flags) + gfp_t mem_flags) { int status = -EINVAL; unsigned long flags; @@ -1529,7 +1529,7 @@ sitd_urb_transaction ( struct ehci_iso_stream *stream, struct ehci_hcd *ehci, struct urb *urb, - unsigned mem_flags + gfp_t mem_flags ) { struct ehci_sitd *sitd; @@ -1779,7 +1779,7 @@ sitd_complete ( static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb, - unsigned mem_flags) + gfp_t mem_flags) { int status = -EINVAL; unsigned long flags; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index f34a0516d35f..18e257c2bdb5 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -97,6 +97,7 @@ struct ehci_hcd { /* one per controller */ #else # define COUNT(x) do {} while (0) #endif + u8 sbrn; /* packed release number */ }; /* convert between an HCD pointer and the corresponding EHCI_HCD */ diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index e142056b0d2c..ddb8fc591466 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -638,7 +638,7 @@ static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs) + msecs_to_jiffies(20) + 1); if (intstat & HCINT_RD) { DBG("---- remote wakeup\n"); - schedule_work(&isp116x->rh_resume); + usb_hcd_resume_root_hub(hcd); ret = IRQ_HANDLED; } irqstat &= ~HCuPINT_OPR; @@ -694,7 +694,7 @@ static int balance(struct isp116x *isp116x, u16 period, u16 load) static int isp116x_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *hep, struct urb *urb, - unsigned mem_flags) + gfp_t mem_flags) { struct isp116x *isp116x = hcd_to_isp116x(hcd); struct usb_device *udev = urb->dev; @@ -1160,7 +1160,7 @@ static int isp116x_hub_control(struct usb_hcd *hcd, #ifdef CONFIG_PM -static int isp116x_hub_suspend(struct usb_hcd *hcd) +static int isp116x_bus_suspend(struct usb_hcd *hcd) { struct isp116x *isp116x = hcd_to_isp116x(hcd); unsigned long flags; @@ -1200,7 +1200,7 @@ static int isp116x_hub_suspend(struct usb_hcd *hcd) return ret; } -static int isp116x_hub_resume(struct usb_hcd *hcd) +static int isp116x_bus_resume(struct usb_hcd *hcd) { struct isp116x *isp116x = hcd_to_isp116x(hcd); u32 val; @@ -1263,21 +1263,11 @@ static int isp116x_hub_resume(struct usb_hcd *hcd) return 0; } -static void isp116x_rh_resume(void *_hcd) -{ - struct usb_hcd *hcd = _hcd; - - usb_resume_device(hcd->self.root_hub); -} #else -#define isp116x_hub_suspend NULL -#define isp116x_hub_resume NULL - -static void isp116x_rh_resume(void *_hcd) -{ -} +#define isp116x_bus_suspend NULL +#define isp116x_bus_resume NULL #endif @@ -1636,8 +1626,8 @@ static struct hc_driver isp116x_hc_driver = { .hub_status_data = isp116x_hub_status_data, .hub_control = isp116x_hub_control, - .hub_suspend = isp116x_hub_suspend, - .hub_resume = isp116x_hub_resume, + .bus_suspend = isp116x_bus_suspend, + .bus_resume = isp116x_bus_resume, }; /*----------------------------------------------------------------*/ @@ -1732,7 +1722,6 @@ static int __init isp116x_probe(struct device *dev) isp116x->addr_reg = addr_reg; spin_lock_init(&isp116x->lock); INIT_LIST_HEAD(&isp116x->async); - INIT_WORK(&isp116x->rh_resume, isp116x_rh_resume, hcd); isp116x->board = dev->platform_data; if (!isp116x->board) { @@ -1774,22 +1763,13 @@ static int __init isp116x_probe(struct device *dev) /* Suspend of platform device */ -static int isp116x_suspend(struct device *dev, pm_message_t state, u32 phase) +static int isp116x_suspend(struct device *dev, pm_message_t state) { int ret = 0; - struct usb_hcd *hcd = dev_get_drvdata(dev); - VDBG("%s: state %x, phase %x\n", __func__, state, phase); + VDBG("%s: state %x\n", __func__, state); - if (phase != SUSPEND_DISABLE && phase != SUSPEND_POWER_DOWN) - return 0; - - ret = usb_suspend_device(hcd->self.root_hub, state); - if (!ret) { - dev->power.power_state = state; - INFO("%s suspended\n", hcd_name); - } else - ERR("%s suspend failed\n", hcd_name); + dev->power.power_state = state; return ret; } @@ -1797,21 +1777,14 @@ static int isp116x_suspend(struct device *dev, pm_message_t state, u32 phase) /* Resume platform device */ -static int isp116x_resume(struct device *dev, u32 phase) +static int isp116x_resume(struct device *dev) { int ret = 0; - struct usb_hcd *hcd = dev_get_drvdata(dev); - VDBG("%s: state %x, phase %x\n", __func__, dev->power.power_state, - phase); - if (phase != RESUME_POWER_ON) - return 0; + VDBG("%s: state %x\n", __func__, dev->power.power_state); + + dev->power.power_state = PMSG_ON; - ret = usb_resume_device(hcd->self.root_hub); - if (!ret) { - dev->power.power_state = PMSG_ON; - VDBG("%s resumed\n", (char *)hcd_name); - } return ret; } diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h index 58873470dcf5..c6fec96785fe 100644 --- a/drivers/usb/host/isp116x.h +++ b/drivers/usb/host/isp116x.h @@ -253,7 +253,6 @@ static const int cc_to_error[16] = { struct isp116x { spinlock_t lock; - struct work_struct rh_resume; void __iomem *addr_reg; void __iomem *data_reg; diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c index 3981bf15c8c7..a277e258eb6c 100644 --- a/drivers/usb/host/ohci-au1xxx.c +++ b/drivers/usb/host/ohci-au1xxx.c @@ -214,6 +214,11 @@ static const struct hc_driver ohci_au1xxx_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, }; /*-------------------------------------------------------------------------*/ @@ -259,6 +264,7 @@ static int ohci_hcd_au1xxx_drv_resume(struct device *dev) static struct device_driver ohci_hcd_au1xxx_driver = { .name = "au1xxx-ohci", + .owner = THIS_MODULE, .bus = &platform_bus_type, .probe = ohci_hcd_au1xxx_drv_probe, .remove = ohci_hcd_au1xxx_drv_remove, diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c index 7924c74f958e..7bfffcbbd226 100644 --- a/drivers/usb/host/ohci-dbg.c +++ b/drivers/usb/host/ohci-dbg.c @@ -193,10 +193,6 @@ ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size) maybe_print_eds (controller, "donehead", ohci_readl (controller, ®s->donehead), next, size); - - /* broken fminterval means traffic won't flow! */ - ohci_dbg (controller, "fminterval %08x\n", - ohci_readl (controller, ®s->fminterval)); } #define dbg_port_sw(hc,num,value,next,size) \ diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 67c1aa5eb1c1..5c0c6c8a7a82 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -180,7 +180,7 @@ static int ohci_urb_enqueue ( struct usb_hcd *hcd, struct usb_host_endpoint *ep, struct urb *urb, - unsigned mem_flags + gfp_t mem_flags ) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); struct ed *ed; @@ -723,7 +723,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs) ohci_vdbg (ohci, "resume detect\n"); ohci_writel (ohci, OHCI_INTR_RD, ®s->intrstatus); if (hcd->state != HC_STATE_QUIESCING) - schedule_work(&ohci->rh_resume); + usb_hcd_resume_root_hub(hcd); } if (ints & OHCI_INTR_WDH) { @@ -791,7 +791,7 @@ static void ohci_stop (struct usb_hcd *hcd) /* must not be called from interrupt context */ -#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) +#ifdef CONFIG_PM static int ohci_restart (struct ohci_hcd *ohci) { diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index ce7b28da7a15..e01e77bc324b 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -36,7 +36,7 @@ /*-------------------------------------------------------------------------*/ -#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) +#ifdef CONFIG_PM #define OHCI_SCHED_ENABLES \ (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE) @@ -45,7 +45,7 @@ static void dl_done_list (struct ohci_hcd *, struct pt_regs *); static void finish_unlinks (struct ohci_hcd *, u16 , struct pt_regs *); static int ohci_restart (struct ohci_hcd *ohci); -static int ohci_hub_suspend (struct usb_hcd *hcd) +static int ohci_bus_suspend (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); int status = 0; @@ -73,7 +73,6 @@ static int ohci_hub_suspend (struct usb_hcd *hcd) ohci_dbg (ohci, "suspend root hub\n"); /* First stop any processing */ - hcd->state = HC_STATE_QUIESCING; if (ohci->hc_control & OHCI_SCHED_ENABLES) { int limit; @@ -108,7 +107,9 @@ static int ohci_hub_suspend (struct usb_hcd *hcd) else ohci->hc_control &= ~OHCI_CTRL_RWE; - /* Suspend hub */ + /* Suspend hub ... this is the "global (to this bus) suspend" mode, + * which doesn't imply ports will first be individually suspended. + */ ohci->hc_control &= ~OHCI_CTRL_HCFS; ohci->hc_control |= OHCI_USB_SUSPEND; ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); @@ -118,8 +119,9 @@ static int ohci_hub_suspend (struct usb_hcd *hcd) ohci->next_statechange = jiffies + msecs_to_jiffies (5); done: + /* external suspend vs self autosuspend ... same effect */ if (status == 0) - hcd->state = HC_STATE_SUSPENDED; + usb_hcd_suspend_root_hub(hcd); spin_unlock_irqrestore (&ohci->lock, flags); return status; } @@ -133,7 +135,7 @@ static inline struct ed *find_head (struct ed *ed) } /* caller has locked the root hub */ -static int ohci_hub_resume (struct usb_hcd *hcd) +static int ohci_bus_resume (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); u32 temp, enables; @@ -146,7 +148,7 @@ static int ohci_hub_resume (struct usb_hcd *hcd) ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { - /* this can happen after suspend-to-disk */ + /* this can happen after resuming a swsusp snapshot */ if (hcd->state == HC_STATE_RESUMING) { ohci_dbg (ohci, "BIOS/SMM active, control %03x\n", ohci->hc_control); @@ -169,11 +171,12 @@ static int ohci_hub_resume (struct usb_hcd *hcd) ohci_info (ohci, "wakeup\n"); break; case OHCI_USB_OPER: - ohci_dbg (ohci, "already resumed\n"); - status = 0; + /* this can happen after resuming a swsusp snapshot */ + ohci_dbg (ohci, "snapshot resume? reinit\n"); + status = -EBUSY; break; default: /* RESET, we lost power */ - ohci_dbg (ohci, "root hub hardware reset\n"); + ohci_dbg (ohci, "lost power\n"); status = -EBUSY; } spin_unlock_irq (&ohci->lock); @@ -198,8 +201,7 @@ static int ohci_hub_resume (struct usb_hcd *hcd) } /* Some controllers (lucent erratum) need extra-long delays */ - hcd->state = HC_STATE_RESUMING; - mdelay (20 /* usb 11.5.1.10 */ + 15); + msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1); temp = ohci_readl (ohci, &ohci->regs->control); temp &= OHCI_CTRL_HCFS; @@ -273,28 +275,10 @@ static int ohci_hub_resume (struct usb_hcd *hcd) (void) ohci_readl (ohci, &ohci->regs->control); } - hcd->state = HC_STATE_RUNNING; return 0; } -static void ohci_rh_resume (void *_hcd) -{ - struct usb_hcd *hcd = _hcd; - - usb_lock_device (hcd->self.root_hub); - (void) ohci_hub_resume (hcd); - usb_unlock_device (hcd->self.root_hub); -} - -#else - -static void ohci_rh_resume (void *_hcd) -{ - struct ohci_hcd *ohci = hcd_to_ohci (_hcd); - ohci_dbg(ohci, "rh_resume ??\n"); -} - -#endif /* CONFIG_USB_SUSPEND || CONFIG_PM */ +#endif /* CONFIG_PM */ /*-------------------------------------------------------------------------*/ @@ -367,7 +351,6 @@ done: #ifdef CONFIG_PM /* save power by suspending idle root hubs; * INTR_RD wakes us when there's work - * NOTE: if we can do this, we don't need a root hub timer! */ if (can_suspend && !changed @@ -379,8 +362,7 @@ done: && usb_trylock_device (hcd->self.root_hub) ) { ohci_vdbg (ohci, "autosuspend\n"); - (void) ohci_hub_suspend (hcd); - hcd->state = HC_STATE_RUNNING; + (void) ohci_bus_suspend (hcd); usb_unlock_device (hcd->self.root_hub); } #endif @@ -554,7 +536,7 @@ static int ohci_hub_control ( temp = RH_PS_POCI; if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER) - schedule_work (&ohci->rh_resume); + usb_hcd_resume_root_hub(hcd); break; case USB_PORT_FEAT_C_SUSPEND: temp = RH_PS_PSSC; diff --git a/drivers/usb/host/ohci-lh7a404.c b/drivers/usb/host/ohci-lh7a404.c index 859aca7be753..238fa4ade615 100644 --- a/drivers/usb/host/ohci-lh7a404.c +++ b/drivers/usb/host/ohci-lh7a404.c @@ -193,6 +193,11 @@ static const struct hc_driver ohci_lh7a404_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, }; /*-------------------------------------------------------------------------*/ @@ -239,6 +244,7 @@ static int ohci_hcd_lh7a404_drv_resume(struct device *dev) static struct device_driver ohci_hcd_lh7a404_driver = { .name = "lh7a404-ohci", + .owner = THIS_MODULE, .bus = &platform_bus_type, .probe = ohci_hcd_lh7a404_drv_probe, .remove = ohci_hcd_lh7a404_drv_remove, diff --git a/drivers/usb/host/ohci-mem.c b/drivers/usb/host/ohci-mem.c index fd3c4d3714bd..bfbe328a4788 100644 --- a/drivers/usb/host/ohci-mem.c +++ b/drivers/usb/host/ohci-mem.c @@ -28,7 +28,6 @@ static void ohci_hcd_init (struct ohci_hcd *ohci) ohci->next_statechange = jiffies; spin_lock_init (&ohci->lock); INIT_LIST_HEAD (&ohci->pending); - INIT_WORK (&ohci->rh_resume, ohci_rh_resume, ohci_to_hcd(ohci)); ohci->reboot_notifier.notifier_call = ohci_reboot; } @@ -84,7 +83,7 @@ dma_to_td (struct ohci_hcd *hc, dma_addr_t td_dma) /* TDs ... */ static struct td * -td_alloc (struct ohci_hcd *hc, unsigned mem_flags) +td_alloc (struct ohci_hcd *hc, gfp_t mem_flags) { dma_addr_t dma; struct td *td; @@ -118,7 +117,7 @@ td_free (struct ohci_hcd *hc, struct td *td) /* EDs ... */ static struct ed * -ed_alloc (struct ohci_hcd *hc, unsigned mem_flags) +ed_alloc (struct ohci_hcd *hc, gfp_t mem_flags) { dma_addr_t dma; struct ed *ed; diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index d8f3ba7ad52e..45efeed1fcc3 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -420,9 +420,9 @@ static const struct hc_driver ohci_omap_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, -#ifdef CONFIG_USB_SUSPEND - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif .start_port_reset = ohci_start_port_reset, }; @@ -455,50 +455,32 @@ static int ohci_hcd_omap_drv_remove(struct device *dev) #ifdef CONFIG_PM -static int ohci_omap_suspend(struct device *dev, pm_message_t message, u32 level) +static int ohci_omap_suspend(struct device *dev, pm_message_t message) { struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev)); - int status = -EINVAL; - - if (level != SUSPEND_POWER_DOWN) - return 0; - - down(&ohci_to_hcd(ohci)->self.root_hub->serialize); - status = ohci_hub_suspend(ohci_to_hcd(ohci)); - if (status == 0) { - omap_ohci_clock_power(0); - ohci_to_hcd(ohci)->self.root_hub->state = - USB_STATE_SUSPENDED; - ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; - dev->power.power_state = PMSG_SUSPEND; - } - up(&ohci_to_hcd(ohci)->self.root_hub->serialize); - return status; + + if (time_before(jiffies, ohci->next_statechange)) + msleep(5); + ohci->next_statechange = jiffies; + + omap_ohci_clock_power(0); + ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; + dev->power.power_state = PMSG_SUSPEND; + return 0; } -static int ohci_omap_resume(struct device *dev, u32 level) +static int ohci_omap_resume(struct device *dev) { struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev)); - int status = 0; - - if (level != RESUME_POWER_ON) - return 0; if (time_before(jiffies, ohci->next_statechange)) msleep(5); ohci->next_statechange = jiffies; + omap_ohci_clock_power(1); -#ifdef CONFIG_USB_SUSPEND - /* get extra cleanup even if remote wakeup isn't in use */ - status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub); -#else - down(&ohci_to_hcd(ohci)->self.root_hub->serialize); - status = ohci_hub_resume(ohci_to_hcd(ohci)); - up(&ohci_to_hcd(ohci)->self.root_hub->serialize); -#endif - if (status == 0) - dev->power.power_state = PMSG_ON; - return status; + dev->power.power_state = PMSG_ON; + usb_hcd_resume_root_hub(dev_get_drvdata(dev)); + return 0; } #endif @@ -510,6 +492,7 @@ static int ohci_omap_resume(struct device *dev, u32 level) */ static struct device_driver ohci_hcd_omap_driver = { .name = "ohci", + .owner = THIS_MODULE, .bus = &platform_bus_type, .probe = ohci_hcd_omap_drv_probe, .remove = ohci_hcd_omap_drv_remove, diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index eede6be098d2..bf1d5ab4aa3a 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -112,23 +112,13 @@ ohci_pci_start (struct usb_hcd *hcd) static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) { - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - - /* suspend root hub, hoping it keeps power during suspend */ - if (time_before (jiffies, ohci->next_statechange)) - msleep (100); - -#ifdef CONFIG_USB_SUSPEND - (void) usb_suspend_device (hcd->self.root_hub, message); -#else - usb_lock_device (hcd->self.root_hub); - (void) ohci_hub_suspend (hcd); - usb_unlock_device (hcd->self.root_hub); -#endif + /* root hub was already suspended */ - /* let things settle down a bit */ - msleep (100); - + /* FIXME these PMAC things get called in the wrong places. ASIC + * clocks should be turned off AFTER entering D3, and on BEFORE + * trying to enter D0. Evidently the PCI layer doesn't currently + * provide the right sort of platform hooks for this ... + */ #ifdef CONFIG_PPC_PMAC if (_machine == _MACH_Pmac) { struct device_node *of_node; @@ -145,9 +135,6 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) static int ohci_pci_resume (struct usb_hcd *hcd) { - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int retval = 0; - #ifdef CONFIG_PPC_PMAC if (_machine == _MACH_Pmac) { struct device_node *of_node; @@ -159,19 +146,8 @@ static int ohci_pci_resume (struct usb_hcd *hcd) } #endif /* CONFIG_PPC_PMAC */ - /* resume root hub */ - if (time_before (jiffies, ohci->next_statechange)) - msleep (100); -#ifdef CONFIG_USB_SUSPEND - /* get extra cleanup even if remote wakeup isn't in use */ - retval = usb_resume_device (hcd->self.root_hub); -#else - usb_lock_device (hcd->self.root_hub); - retval = ohci_hub_resume (hcd); - usb_unlock_device (hcd->self.root_hub); -#endif - - return retval; + usb_hcd_resume_root_hub(hcd); + return 0; } #endif /* CONFIG_PM */ @@ -218,9 +194,9 @@ static const struct hc_driver ohci_pci_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, -#ifdef CONFIG_USB_SUSPEND - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif .start_port_reset = ohci_start_port_reset, }; @@ -240,6 +216,7 @@ MODULE_DEVICE_TABLE (pci, pci_ids); static struct pci_driver ohci_pci_driver = { .name = (char *) hcd_name, .id_table = pci_ids, + .owner = THIS_MODULE, .probe = usb_hcd_pci_probe, .remove = usb_hcd_pci_remove, diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c index 251533363028..4832e57ae579 100644 --- a/drivers/usb/host/ohci-ppc-soc.c +++ b/drivers/usb/host/ohci-ppc-soc.c @@ -163,9 +163,9 @@ static const struct hc_driver ohci_ppc_soc_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, -#ifdef CONFIG_USB_SUSPEND - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif .start_port_reset = ohci_start_port_reset, }; @@ -193,10 +193,11 @@ static int ohci_hcd_ppc_soc_drv_remove(struct device *dev) static struct device_driver ohci_hcd_ppc_soc_driver = { .name = "ppc-soc-ohci", + .owner = THIS_MODULE, .bus = &platform_bus_type, .probe = ohci_hcd_ppc_soc_drv_probe, .remove = ohci_hcd_ppc_soc_drv_remove, -#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) +#ifdef CONFIG_PM /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ #endif diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index 2fdb262d4726..d287dcccd415 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -278,10 +278,11 @@ static const struct hc_driver ohci_pxa27x_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, -#ifdef CONFIG_USB_SUSPEND - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif + .start_port_reset = ohci_start_port_reset, }; /*-------------------------------------------------------------------------*/ @@ -309,7 +310,7 @@ static int ohci_hcd_pxa27x_drv_remove(struct device *dev) return 0; } -static int ohci_hcd_pxa27x_drv_suspend(struct device *dev, pm_message_t state, u32 level) +static int ohci_hcd_pxa27x_drv_suspend(struct device *dev, pm_message_t state) { // struct platform_device *pdev = to_platform_device(dev); // struct usb_hcd *hcd = dev_get_drvdata(dev); @@ -318,7 +319,7 @@ static int ohci_hcd_pxa27x_drv_suspend(struct device *dev, pm_message_t state, u return 0; } -static int ohci_hcd_pxa27x_drv_resume(struct device *dev, u32 level) +static int ohci_hcd_pxa27x_drv_resume(struct device *dev) { // struct platform_device *pdev = to_platform_device(dev); // struct usb_hcd *hcd = dev_get_drvdata(dev); diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c index da7d5478f74d..fab420a2ce71 100644 --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -448,11 +448,11 @@ static const struct hc_driver ohci_s3c2410_hc_driver = { */ .hub_status_data = ohci_s3c2410_hub_status_data, .hub_control = ohci_s3c2410_hub_control, - -#if defined(CONFIG_USB_SUSPEND) && 0 - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif + .start_port_reset = ohci_start_port_reset, }; /* device driver */ @@ -474,6 +474,7 @@ static int ohci_hcd_s3c2410_drv_remove(struct device *dev) static struct device_driver ohci_hcd_s3c2410_driver = { .name = "s3c2410-ohci", + .owner = THIS_MODULE, .bus = &platform_bus_type, .probe = ohci_hcd_s3c2410_drv_probe, .remove = ohci_hcd_s3c2410_drv_remove, diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 814d2be4ee7b..fb3221ebbb29 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -235,10 +235,11 @@ static const struct hc_driver ohci_sa1111_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, -#ifdef CONFIG_USB_SUSPEND - .hub_suspend = ohci_hub_suspend, - .hub_resume = ohci_hub_resume, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, #endif + .start_port_reset = ohci_start_port_reset, }; /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 8a9b9d9209e9..caacf14371f5 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -389,7 +389,6 @@ struct ohci_hcd { unsigned long next_statechange; /* suspend/resume */ u32 fminterval; /* saved register */ - struct work_struct rh_resume; struct notifier_block reboot_notifier; unsigned long flags; /* for HC bugs */ diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c new file mode 100644 index 000000000000..b7fd3f644e1e --- /dev/null +++ b/drivers/usb/host/pci-quirks.c @@ -0,0 +1,296 @@ +/* + * This file contains code to reset and initialize USB host controllers. + * Some of it includes work-arounds for PCI hardware and BIOS quirks. + * It may need to run early during booting -- before USB would normally + * initialize -- to ensure that Linux doesn't use any legacy modes. + * + * Copyright (c) 1999 Martin Mares <mj@ucw.cz> + * (and others) + */ + +#include <linux/config.h> +#ifdef CONFIG_USB_DEBUG +#define DEBUG +#else +#undef DEBUG +#endif + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/acpi.h> + + +#define UHCI_USBLEGSUP 0xc0 /* legacy support */ +#define UHCI_USBCMD 0 /* command register */ +#define UHCI_USBINTR 4 /* interrupt register */ +#define UHCI_USBLEGSUP_RWC 0x8f00 /* the R/WC bits */ +#define UHCI_USBLEGSUP_RO 0x5040 /* R/O and reserved bits */ +#define UHCI_USBCMD_RUN 0x0001 /* RUN/STOP bit */ +#define UHCI_USBCMD_HCRESET 0x0002 /* Host Controller reset */ +#define UHCI_USBCMD_EGSM 0x0008 /* Global Suspend Mode */ +#define UHCI_USBCMD_CONFIGURE 0x0040 /* Config Flag */ +#define UHCI_USBINTR_RESUME 0x0002 /* Resume interrupt enable */ + +#define OHCI_CONTROL 0x04 +#define OHCI_CMDSTATUS 0x08 +#define OHCI_INTRSTATUS 0x0c +#define OHCI_INTRENABLE 0x10 +#define OHCI_INTRDISABLE 0x14 +#define OHCI_OCR (1 << 3) /* ownership change request */ +#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */ +#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */ +#define OHCI_INTR_OC (1 << 30) /* ownership change */ + +#define EHCI_HCC_PARAMS 0x08 /* extended capabilities */ +#define EHCI_USBCMD 0 /* command register */ +#define EHCI_USBCMD_RUN (1 << 0) /* RUN/STOP bit */ +#define EHCI_USBSTS 4 /* status register */ +#define EHCI_USBSTS_HALTED (1 << 12) /* HCHalted bit */ +#define EHCI_USBINTR 8 /* interrupt register */ +#define EHCI_USBLEGSUP 0 /* legacy support register */ +#define EHCI_USBLEGSUP_BIOS (1 << 16) /* BIOS semaphore */ +#define EHCI_USBLEGSUP_OS (1 << 24) /* OS semaphore */ +#define EHCI_USBLEGCTLSTS 4 /* legacy control/status */ +#define EHCI_USBLEGCTLSTS_SOOE (1 << 13) /* SMI on ownership change */ + + +/* + * Make sure the controller is completely inactive, unable to + * generate interrupts or do DMA. + */ +void uhci_reset_hc(struct pci_dev *pdev, unsigned long base) +{ + /* Turn off PIRQ enable and SMI enable. (This also turns off the + * BIOS's USB Legacy Support.) Turn off all the R/WC bits too. + */ + pci_write_config_word(pdev, UHCI_USBLEGSUP, UHCI_USBLEGSUP_RWC); + + /* Reset the HC - this will force us to get a + * new notification of any already connected + * ports due to the virtual disconnect that it + * implies. + */ + outw(UHCI_USBCMD_HCRESET, base + UHCI_USBCMD); + mb(); + udelay(5); + if (inw(base + UHCI_USBCMD) & UHCI_USBCMD_HCRESET) + dev_warn(&pdev->dev, "HCRESET not completed yet!\n"); + + /* Just to be safe, disable interrupt requests and + * make sure the controller is stopped. + */ + outw(0, base + UHCI_USBINTR); + outw(0, base + UHCI_USBCMD); +} +EXPORT_SYMBOL_GPL(uhci_reset_hc); + +/* + * Initialize a controller that was newly discovered or has just been + * resumed. In either case we can't be sure of its previous state. + * + * Returns: 1 if the controller was reset, 0 otherwise. + */ +int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base) +{ + u16 legsup; + unsigned int cmd, intr; + + /* + * When restarting a suspended controller, we expect all the + * settings to be the same as we left them: + * + * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP; + * Controller is stopped and configured with EGSM set; + * No interrupts enabled except possibly Resume Detect. + * + * If any of these conditions are violated we do a complete reset. + */ + pci_read_config_word(pdev, UHCI_USBLEGSUP, &legsup); + if (legsup & ~(UHCI_USBLEGSUP_RO | UHCI_USBLEGSUP_RWC)) { + dev_dbg(&pdev->dev, "%s: legsup = 0x%04x\n", + __FUNCTION__, legsup); + goto reset_needed; + } + + cmd = inw(base + UHCI_USBCMD); + if ((cmd & UHCI_USBCMD_RUN) || !(cmd & UHCI_USBCMD_CONFIGURE) || + !(cmd & UHCI_USBCMD_EGSM)) { + dev_dbg(&pdev->dev, "%s: cmd = 0x%04x\n", + __FUNCTION__, cmd); + goto reset_needed; + } + + intr = inw(base + UHCI_USBINTR); + if (intr & (~UHCI_USBINTR_RESUME)) { + dev_dbg(&pdev->dev, "%s: intr = 0x%04x\n", + __FUNCTION__, intr); + goto reset_needed; + } + return 0; + +reset_needed: + dev_dbg(&pdev->dev, "Performing full reset\n"); + uhci_reset_hc(pdev, base); + return 1; +} +EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc); + +static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev) +{ + unsigned long base = 0; + int i; + + for (i = 0; i < PCI_ROM_RESOURCE; i++) + if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) { + base = pci_resource_start(pdev, i); + break; + } + + if (base) + uhci_check_and_reset_hc(pdev, base); +} + +static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev) +{ + void __iomem *base; + int wait_time; + u32 control; + + base = ioremap_nocache(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + if (base == NULL) return; + +/* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */ +#ifndef __hppa__ + control = readl(base + OHCI_CONTROL); + if (control & OHCI_CTRL_IR) { + wait_time = 500; /* arbitrary; 5 seconds */ + writel(OHCI_INTR_OC, base + OHCI_INTRENABLE); + writel(OHCI_OCR, base + OHCI_CMDSTATUS); + while (wait_time > 0 && + readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) { + wait_time -= 10; + msleep(10); + } + if (wait_time <= 0) + printk(KERN_WARNING "%s %s: early BIOS handoff " + "failed (BIOS bug ?)\n", + pdev->dev.bus_id, "OHCI"); + + /* reset controller, preserving RWC */ + writel(control & OHCI_CTRL_RWC, base + OHCI_CONTROL); + } +#endif + + /* + * disable interrupts + */ + writel(~(u32)0, base + OHCI_INTRDISABLE); + writel(~(u32)0, base + OHCI_INTRSTATUS); + + iounmap(base); +} + +static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev) +{ + int wait_time, delta; + void __iomem *base, *op_reg_base; + u32 hcc_params, val, temp; + u8 cap_length; + + base = ioremap_nocache(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + if (base == NULL) return; + + cap_length = readb(base); + op_reg_base = base + cap_length; + hcc_params = readl(base + EHCI_HCC_PARAMS); + hcc_params = (hcc_params >> 8) & 0xff; + if (hcc_params) { + pci_read_config_dword(pdev, + hcc_params + EHCI_USBLEGSUP, + &val); + if (((val & 0xff) == 1) && (val & EHCI_USBLEGSUP_BIOS)) { + /* + * Ok, BIOS is in smm mode, try to hand off... + */ + pci_read_config_dword(pdev, + hcc_params + EHCI_USBLEGCTLSTS, + &temp); + pci_write_config_dword(pdev, + hcc_params + EHCI_USBLEGCTLSTS, + temp | EHCI_USBLEGCTLSTS_SOOE); + val |= EHCI_USBLEGSUP_OS; + pci_write_config_dword(pdev, + hcc_params + EHCI_USBLEGSUP, + val); + + wait_time = 500; + do { + msleep(10); + wait_time -= 10; + pci_read_config_dword(pdev, + hcc_params + EHCI_USBLEGSUP, + &val); + } while (wait_time && (val & EHCI_USBLEGSUP_BIOS)); + if (!wait_time) { + /* + * well, possibly buggy BIOS... + */ + printk(KERN_WARNING "%s %s: early BIOS handoff " + "failed (BIOS bug ?)\n", + pdev->dev.bus_id, "EHCI"); + pci_write_config_dword(pdev, + hcc_params + EHCI_USBLEGSUP, + EHCI_USBLEGSUP_OS); + pci_write_config_dword(pdev, + hcc_params + EHCI_USBLEGCTLSTS, + 0); + } + } + } + + /* + * halt EHCI & disable its interrupts in any case + */ + val = readl(op_reg_base + EHCI_USBSTS); + if ((val & EHCI_USBSTS_HALTED) == 0) { + val = readl(op_reg_base + EHCI_USBCMD); + val &= ~EHCI_USBCMD_RUN; + writel(val, op_reg_base + EHCI_USBCMD); + + wait_time = 2000; + delta = 100; + do { + writel(0x3f, op_reg_base + EHCI_USBSTS); + udelay(delta); + wait_time -= delta; + val = readl(op_reg_base + EHCI_USBSTS); + if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) { + break; + } + } while (wait_time > 0); + } + writel(0, op_reg_base + EHCI_USBINTR); + writel(0x3f, op_reg_base + EHCI_USBSTS); + + iounmap(base); + + return; +} + + + +static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev) +{ + if (pdev->class == PCI_CLASS_SERIAL_USB_UHCI) + quirk_usb_handoff_uhci(pdev); + else if (pdev->class == PCI_CLASS_SERIAL_USB_OHCI) + quirk_usb_handoff_ohci(pdev); + else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI) + quirk_usb_disable_ehci(pdev); +} +DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff); diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index d42a15d10a46..40169d9cf2b1 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -818,7 +818,7 @@ static int sl811h_urb_enqueue( struct usb_hcd *hcd, struct usb_host_endpoint *hep, struct urb *urb, - unsigned mem_flags + gfp_t mem_flags ) { struct sl811 *sl811 = hcd_to_sl811(hcd); struct usb_device *udev = urb->dev; @@ -1363,7 +1363,7 @@ error: #ifdef CONFIG_PM static int -sl811h_hub_suspend(struct usb_hcd *hcd) +sl811h_bus_suspend(struct usb_hcd *hcd) { // SOFs off DBG("%s\n", __FUNCTION__); @@ -1371,7 +1371,7 @@ sl811h_hub_suspend(struct usb_hcd *hcd) } static int -sl811h_hub_resume(struct usb_hcd *hcd) +sl811h_bus_resume(struct usb_hcd *hcd) { // SOFs on DBG("%s\n", __FUNCTION__); @@ -1380,8 +1380,8 @@ sl811h_hub_resume(struct usb_hcd *hcd) #else -#define sl811h_hub_suspend NULL -#define sl811h_hub_resume NULL +#define sl811h_bus_suspend NULL +#define sl811h_bus_resume NULL #endif @@ -1623,8 +1623,8 @@ static struct hc_driver sl811h_hc_driver = { */ .hub_status_data = sl811h_hub_status_data, .hub_control = sl811h_hub_control, - .hub_suspend = sl811h_hub_suspend, - .hub_resume = sl811h_hub_resume, + .bus_suspend = sl811h_bus_suspend, + .bus_resume = sl811h_bus_resume, }; /*-------------------------------------------------------------------------*/ @@ -1784,17 +1784,14 @@ sl811h_probe(struct device *dev) */ static int -sl811h_suspend(struct device *dev, pm_message_t state, u32 phase) +sl811h_suspend(struct device *dev, pm_message_t state) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct sl811 *sl811 = hcd_to_sl811(hcd); int retval = 0; - if (phase != SUSPEND_POWER_DOWN) - return retval; - if (state.event == PM_EVENT_FREEZE) - retval = sl811h_hub_suspend(hcd); + retval = sl811h_bus_suspend(hcd); else if (state.event == PM_EVENT_SUSPEND) port_power(sl811, 0); if (retval == 0) @@ -1803,14 +1800,11 @@ sl811h_suspend(struct device *dev, pm_message_t state, u32 phase) } static int -sl811h_resume(struct device *dev, u32 phase) +sl811h_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct sl811 *sl811 = hcd_to_sl811(hcd); - if (phase != RESUME_POWER_ON) - return 0; - /* with no "check to see if VBUS is still powered" board hook, * let's assume it'd only be powered to enable remote wakeup. */ @@ -1822,7 +1816,7 @@ sl811h_resume(struct device *dev, u32 phase) } dev->power.power_state = PMSG_ON; - return sl811h_hub_resume(hcd); + return sl811h_bus_resume(hcd); } #else @@ -1837,6 +1831,7 @@ sl811h_resume(struct device *dev, u32 phase) struct device_driver sl811h_driver = { .name = (char *) hcd_name, .bus = &platform_bus_type, + .owner = THIS_MODULE, .probe = sl811h_probe, .remove = __devexit_p(sl811h_remove), diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c index 4538a98b6f9d..151154df37fa 100644 --- a/drivers/usb/host/uhci-debug.c +++ b/drivers/usb/host/uhci-debug.c @@ -348,7 +348,6 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *bu if (urbp->urb->status != -EINPROGRESS) out += sprintf(out, "Status=%d ", urbp->urb->status); - //out += sprintf(out, "Inserttime=%lx ",urbp->inserttime); //out += sprintf(out, "FSBRtime=%lx ",urbp->fsbrtime); count = 0; @@ -446,11 +445,11 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) out += sprintf(out, "Frame List\n"); for (i = 0; i < UHCI_NUMFRAMES; ++i) { int shown = 0; - td = uhci->fl->frame_cpu[i]; + td = uhci->frame_cpu[i]; if (!td) continue; - if (td->dma_handle != (dma_addr_t)uhci->fl->frame[i]) { + if (td->dma_handle != (dma_addr_t)uhci->frame[i]) { show_frame_num(); out += sprintf(out, " frame list does not match td->dma_handle!\n"); } diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 0c024898cbea..15e0a511069b 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -101,37 +101,16 @@ static void uhci_get_current_frame_number(struct uhci_hcd *uhci); #include "uhci-q.c" #include "uhci-hub.c" +extern void uhci_reset_hc(struct pci_dev *pdev, unsigned long base); +extern int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base); + /* - * Make sure the controller is completely inactive, unable to - * generate interrupts or do DMA. + * Finish up a host controller reset and update the recorded state. */ -static void reset_hc(struct uhci_hcd *uhci) +static void finish_reset(struct uhci_hcd *uhci) { int port; - /* Turn off PIRQ enable and SMI enable. (This also turns off the - * BIOS's USB Legacy Support.) Turn off all the R/WC bits too. - */ - pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, - USBLEGSUP_RWC); - - /* Reset the HC - this will force us to get a - * new notification of any already connected - * ports due to the virtual disconnect that it - * implies. - */ - outw(USBCMD_HCRESET, uhci->io_addr + USBCMD); - mb(); - udelay(5); - if (inw(uhci->io_addr + USBCMD) & USBCMD_HCRESET) - dev_warn(uhci_dev(uhci), "HCRESET not completed yet!\n"); - - /* Just to be safe, disable interrupt requests and - * make sure the controller is stopped. - */ - outw(0, uhci->io_addr + USBINTR); - outw(0, uhci->io_addr + USBCMD); - /* HCRESET doesn't affect the Suspend, Reset, and Resume Detect * bits in the port status and control registers. * We have to clear them by hand. @@ -153,7 +132,8 @@ static void reset_hc(struct uhci_hcd *uhci) */ static void hc_died(struct uhci_hcd *uhci) { - reset_hc(uhci); + uhci_reset_hc(to_pci_dev(uhci_dev(uhci)), uhci->io_addr); + finish_reset(uhci); uhci->hc_inaccessible = 1; } @@ -163,44 +143,8 @@ static void hc_died(struct uhci_hcd *uhci) */ static void check_and_reset_hc(struct uhci_hcd *uhci) { - u16 legsup; - unsigned int cmd, intr; - - /* - * When restarting a suspended controller, we expect all the - * settings to be the same as we left them: - * - * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP; - * Controller is stopped and configured with EGSM set; - * No interrupts enabled except possibly Resume Detect. - * - * If any of these conditions are violated we do a complete reset. - */ - pci_read_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, &legsup); - if (legsup & ~(USBLEGSUP_RO | USBLEGSUP_RWC)) { - dev_dbg(uhci_dev(uhci), "%s: legsup = 0x%04x\n", - __FUNCTION__, legsup); - goto reset_needed; - } - - cmd = inw(uhci->io_addr + USBCMD); - if ((cmd & USBCMD_RS) || !(cmd & USBCMD_CF) || !(cmd & USBCMD_EGSM)) { - dev_dbg(uhci_dev(uhci), "%s: cmd = 0x%04x\n", - __FUNCTION__, cmd); - goto reset_needed; - } - - intr = inw(uhci->io_addr + USBINTR); - if (intr & (~USBINTR_RESUME)) { - dev_dbg(uhci_dev(uhci), "%s: intr = 0x%04x\n", - __FUNCTION__, intr); - goto reset_needed; - } - return; - -reset_needed: - dev_dbg(uhci_dev(uhci), "Performing full reset\n"); - reset_hc(uhci); + if (uhci_check_and_reset_hc(to_pci_dev(uhci_dev(uhci)), uhci->io_addr)) + finish_reset(uhci); } /* @@ -212,13 +156,13 @@ static void configure_hc(struct uhci_hcd *uhci) outb(USBSOF_DEFAULT, uhci->io_addr + USBSOF); /* Store the frame list base address */ - outl(uhci->fl->dma_handle, uhci->io_addr + USBFLBASEADD); + outl(uhci->frame_dma_handle, uhci->io_addr + USBFLBASEADD); /* Set the current frame number */ outw(uhci->frame_number, uhci->io_addr + USBFRNUM); - /* Mark controller as running before we enable interrupts */ - uhci_to_hcd(uhci)->state = HC_STATE_RUNNING; + /* Mark controller as not halted before we enable interrupts */ + uhci_to_hcd(uhci)->state = HC_STATE_SUSPENDED; mb(); /* Enable PIRQ */ @@ -319,6 +263,7 @@ __acquires(uhci->lock) static void start_rh(struct uhci_hcd *uhci) { + uhci_to_hcd(uhci)->state = HC_STATE_RUNNING; uhci->is_stopped = 0; smp_wmb(); @@ -437,36 +382,21 @@ static void release_uhci(struct uhci_hcd *uhci) int i; for (i = 0; i < UHCI_NUM_SKELQH; i++) - if (uhci->skelqh[i]) { - uhci_free_qh(uhci, uhci->skelqh[i]); - uhci->skelqh[i] = NULL; - } + uhci_free_qh(uhci, uhci->skelqh[i]); - if (uhci->term_td) { - uhci_free_td(uhci, uhci->term_td); - uhci->term_td = NULL; - } + uhci_free_td(uhci, uhci->term_td); - if (uhci->qh_pool) { - dma_pool_destroy(uhci->qh_pool); - uhci->qh_pool = NULL; - } + dma_pool_destroy(uhci->qh_pool); - if (uhci->td_pool) { - dma_pool_destroy(uhci->td_pool); - uhci->td_pool = NULL; - } + dma_pool_destroy(uhci->td_pool); - if (uhci->fl) { - dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl), - uhci->fl, uhci->fl->dma_handle); - uhci->fl = NULL; - } + kfree(uhci->frame_cpu); - if (uhci->dentry) { - debugfs_remove(uhci->dentry); - uhci->dentry = NULL; - } + dma_free_coherent(uhci_dev(uhci), + UHCI_NUMFRAMES * sizeof(*uhci->frame), + uhci->frame, uhci->frame_dma_handle); + + debugfs_remove(uhci->dentry); } static int uhci_reset(struct usb_hcd *hcd) @@ -545,7 +475,6 @@ static int uhci_start(struct usb_hcd *hcd) struct uhci_hcd *uhci = hcd_to_uhci(hcd); int retval = -EBUSY; int i; - dma_addr_t dma_handle; struct dentry *dentry; hcd->uses_new_polling = 1; @@ -579,17 +508,23 @@ static int uhci_start(struct usb_hcd *hcd) init_waitqueue_head(&uhci->waitqh); - uhci->fl = dma_alloc_coherent(uhci_dev(uhci), sizeof(*uhci->fl), - &dma_handle, 0); - if (!uhci->fl) { + uhci->frame = dma_alloc_coherent(uhci_dev(uhci), + UHCI_NUMFRAMES * sizeof(*uhci->frame), + &uhci->frame_dma_handle, 0); + if (!uhci->frame) { dev_err(uhci_dev(uhci), "unable to allocate " "consistent memory for frame list\n"); - goto err_alloc_fl; + goto err_alloc_frame; } + memset(uhci->frame, 0, UHCI_NUMFRAMES * sizeof(*uhci->frame)); - memset((void *)uhci->fl, 0, sizeof(*uhci->fl)); - - uhci->fl->dma_handle = dma_handle; + uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu), + GFP_KERNEL); + if (!uhci->frame_cpu) { + dev_err(uhci_dev(uhci), "unable to allocate " + "memory for frame pointers\n"); + goto err_alloc_frame_cpu; + } uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci), sizeof(struct uhci_td), 16, 0); @@ -672,7 +607,7 @@ static int uhci_start(struct usb_hcd *hcd) irq = 7; /* Only place we don't use the frame list routines */ - uhci->fl->frame[i] = UHCI_PTR_QH | + uhci->frame[i] = UHCI_PTR_QH | cpu_to_le32(uhci->skelqh[irq]->dma_handle); } @@ -690,31 +625,29 @@ static int uhci_start(struct usb_hcd *hcd) * error exits: */ err_alloc_skelqh: - for (i = 0; i < UHCI_NUM_SKELQH; i++) - if (uhci->skelqh[i]) { + for (i = 0; i < UHCI_NUM_SKELQH; i++) { + if (uhci->skelqh[i]) uhci_free_qh(uhci, uhci->skelqh[i]); - uhci->skelqh[i] = NULL; - } + } uhci_free_td(uhci, uhci->term_td); - uhci->term_td = NULL; err_alloc_term_td: dma_pool_destroy(uhci->qh_pool); - uhci->qh_pool = NULL; err_create_qh_pool: dma_pool_destroy(uhci->td_pool); - uhci->td_pool = NULL; err_create_td_pool: - dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl), - uhci->fl, uhci->fl->dma_handle); - uhci->fl = NULL; + kfree(uhci->frame_cpu); + +err_alloc_frame_cpu: + dma_free_coherent(uhci_dev(uhci), + UHCI_NUMFRAMES * sizeof(*uhci->frame), + uhci->frame, uhci->frame_dma_handle); -err_alloc_fl: +err_alloc_frame: debugfs_remove(uhci->dentry); - uhci->dentry = NULL; err_create_debug_entry: return retval; @@ -726,7 +659,7 @@ static void uhci_stop(struct usb_hcd *hcd) spin_lock_irq(&uhci->lock); if (!uhci->hc_inaccessible) - reset_hc(uhci); + hc_died(uhci); uhci_scan_schedule(uhci, NULL); spin_unlock_irq(&uhci->lock); @@ -774,14 +707,8 @@ static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message) if (uhci->hc_inaccessible) /* Dead or already suspended */ goto done; -#ifndef CONFIG_USB_SUSPEND - /* Otherwise this would never happen */ - suspend_rh(uhci, UHCI_RH_SUSPENDED); -#endif - if (uhci->rh_state > UHCI_RH_SUSPENDED) { dev_warn(uhci_dev(uhci), "Root hub isn't suspended!\n"); - hcd->state = HC_STATE_RUNNING; rc = -EBUSY; goto done; }; @@ -820,10 +747,6 @@ static int uhci_resume(struct usb_hcd *hcd) check_and_reset_hc(uhci); configure_hc(uhci); -#ifndef CONFIG_USB_SUSPEND - /* Otherwise this would never happen */ - wakeup_rh(uhci); -#endif if (uhci->rh_state == UHCI_RH_RESET) suspend_rh(uhci, UHCI_RH_SUSPENDED); @@ -881,8 +804,8 @@ static const struct hc_driver uhci_driver = { #ifdef CONFIG_PM .suspend = uhci_suspend, .resume = uhci_resume, - .hub_suspend = uhci_rh_suspend, - .hub_resume = uhci_rh_resume, + .bus_suspend = uhci_rh_suspend, + .bus_resume = uhci_rh_resume, #endif .stop = uhci_stop, @@ -908,6 +831,7 @@ MODULE_DEVICE_TABLE(pci, uhci_pci_ids); static struct pci_driver uhci_pci_driver = { .name = (char *)hcd_name, .id_table = uhci_pci_ids, + .owner = THIS_MODULE, .probe = usb_hcd_pci_probe, .remove = usb_hcd_pci_remove, diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h index 282f40b75881..e576db57a926 100644 --- a/drivers/usb/host/uhci-hcd.h +++ b/drivers/usb/host/uhci-hcd.h @@ -7,6 +7,7 @@ #define usb_packetid(pipe) (usb_pipein(pipe) ? USB_PID_IN : USB_PID_OUT) #define PIPE_DEVEP_MASK 0x0007ff00 + /* * Universal Host Controller Interface data structures and defines */ @@ -82,15 +83,10 @@ #define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */ #define CAN_SCHEDULE_FRAMES 1000 /* how far future frames can be scheduled */ -struct uhci_frame_list { - __le32 frame[UHCI_NUMFRAMES]; - - void *frame_cpu[UHCI_NUMFRAMES]; - - dma_addr_t dma_handle; -}; -struct urb_priv; +/* + * Queue Headers + */ /* * One role of a QH is to hold a queue of TDs for some endpoint. Each QH is @@ -116,13 +112,13 @@ struct uhci_qh { struct urb_priv *urbp; - struct list_head list; /* P: uhci->frame_list_lock */ - struct list_head remove_list; /* P: uhci->remove_list_lock */ + struct list_head list; + struct list_head remove_list; } __attribute__((aligned(16))); /* * We need a special accessor for the element pointer because it is - * subject to asynchronous updates by the controller + * subject to asynchronous updates by the controller. */ static __le32 inline qh_element(struct uhci_qh *qh) { __le32 element = qh->element; @@ -131,6 +127,11 @@ static __le32 inline qh_element(struct uhci_qh *qh) { return element; } + +/* + * Transfer Descriptors + */ + /* * for TD <status>: */ @@ -183,17 +184,10 @@ static __le32 inline qh_element(struct uhci_qh *qh) { * * That's silly, the hardware doesn't care. The hardware only cares that * the hardware words are 16-byte aligned, and we can have any amount of - * sw space after the TD entry as far as I can tell. - * - * But let's just go with the documentation, at least for 32-bit machines. - * On 64-bit machines we probably want to take advantage of the fact that - * hw doesn't really care about the size of the sw-only area. - * - * Alas, not anymore, we have more than 4 words for software, woops. - * Everything still works tho, surprise! -jerdfelt + * sw space after the TD entry. * * td->link points to either another TD (not necessarily for the same urb or - * even the same endpoint), or nothing (PTR_TERM), or a QH (for queued urbs) + * even the same endpoint), or nothing (PTR_TERM), or a QH (for queued urbs). */ struct uhci_td { /* Hardware fields */ @@ -205,18 +199,16 @@ struct uhci_td { /* Software fields */ dma_addr_t dma_handle; - struct urb *urb; - - struct list_head list; /* P: urb->lock */ - struct list_head remove_list; /* P: uhci->td_remove_list_lock */ + struct list_head list; + struct list_head remove_list; int frame; /* for iso: what frame? */ - struct list_head fl_list; /* P: uhci->frame_list_lock */ + struct list_head fl_list; } __attribute__((aligned(16))); /* * We need a special accessor for the control/status word because it is - * subject to asynchronous updates by the controller + * subject to asynchronous updates by the controller. */ static u32 inline td_status(struct uhci_td *td) { __le32 status = td->status; @@ -227,6 +219,10 @@ static u32 inline td_status(struct uhci_td *td) { /* + * Skeleton Queue Headers + */ + +/* * The UHCI driver places Interrupt, Control and Bulk into QH's both * to group together TD's for one transfer, and also to faciliate queuing * of URB's. To make it easy to insert entries into the schedule, we have @@ -256,15 +252,15 @@ static u32 inline td_status(struct uhci_td *td) { * * The terminating QH is used for 2 reasons: * - To place a terminating TD which is used to workaround a PIIX bug - * (see Intel errata for explanation) + * (see Intel errata for explanation), and * - To loop back to the full-speed control queue for full-speed bandwidth - * reclamation + * reclamation. * * Isochronous transfers are stored before the start of the skeleton * schedule and don't use QH's. While the UHCI spec doesn't forbid the - * use of QH's for Isochronous, it doesn't use them either. Since we don't - * need to use them either, we follow the spec diagrams in hope that it'll - * be more compatible with future UHCI implementations. + * use of QH's for Isochronous, it doesn't use them either. And the spec + * says that queues never advance on an error completion status, which + * makes them totally unsuitable for Isochronous transfers. */ #define UHCI_NUM_SKELQH 12 @@ -314,8 +310,13 @@ static inline int __interval_to_skel(int interval) return 0; /* int128 for 128-255 ms (Max.) */ } + +/* + * The UHCI controller and root hub + */ + /* - * States for the root hub. + * States for the root hub: * * To prevent "bouncing" in the presence of electrical noise, * when there are no devices attached we delay for 1 second in the @@ -326,7 +327,7 @@ static inline int __interval_to_skel(int interval) */ enum uhci_rh_state { /* In the following states the HC must be halted. - * These two must come first */ + * These two must come first. */ UHCI_RH_RESET, UHCI_RH_SUSPENDED, @@ -338,13 +339,13 @@ enum uhci_rh_state { UHCI_RH_SUSPENDING, /* In the following states it's an error if the HC is halted. - * These two must come last */ + * These two must come last. */ UHCI_RH_RUNNING, /* The normal state */ UHCI_RH_RUNNING_NODEVS, /* Running with no devices attached */ }; /* - * This describes the full uhci information. + * The full UHCI controller information: */ struct uhci_hcd { @@ -361,7 +362,11 @@ struct uhci_hcd { struct uhci_qh *skelqh[UHCI_NUM_SKELQH]; /* Skeleton QH's */ spinlock_t lock; - struct uhci_frame_list *fl; /* P: uhci->lock */ + + dma_addr_t frame_dma_handle; /* Hardware frame list */ + __le32 *frame; + void **frame_cpu; /* CPU's frame list */ + int fsbr; /* Full-speed bandwidth reclamation */ unsigned long fsbrtimeout; /* FSBR delay */ @@ -385,22 +390,22 @@ struct uhci_hcd { unsigned long ports_timeout; /* Time to stop signalling */ /* Main list of URB's currently controlled by this HC */ - struct list_head urb_list; /* P: uhci->lock */ + struct list_head urb_list; /* List of QH's that are done, but waiting to be unlinked (race) */ - struct list_head qh_remove_list; /* P: uhci->lock */ + struct list_head qh_remove_list; unsigned int qh_remove_age; /* Age in frames */ /* List of TD's that are done, but waiting to be freed (race) */ - struct list_head td_remove_list; /* P: uhci->lock */ + struct list_head td_remove_list; unsigned int td_remove_age; /* Age in frames */ /* List of asynchronously unlinked URB's */ - struct list_head urb_remove_list; /* P: uhci->lock */ + struct list_head urb_remove_list; unsigned int urb_remove_age; /* Age in frames */ /* List of URB's awaiting completion callback */ - struct list_head complete_list; /* P: uhci->lock */ + struct list_head complete_list; int rh_numports; /* Number of root-hub ports */ @@ -419,13 +424,17 @@ static inline struct usb_hcd *uhci_to_hcd(struct uhci_hcd *uhci) #define uhci_dev(u) (uhci_to_hcd(u)->self.controller) + +/* + * Private per-URB data + */ struct urb_priv { struct list_head urb_list; struct urb *urb; struct uhci_qh *qh; /* QH for this URB */ - struct list_head td_list; /* P: urb->lock */ + struct list_head td_list; unsigned fsbr : 1; /* URB turned on FSBR */ unsigned fsbr_timeout : 1; /* URB timed out on FSBR */ @@ -434,12 +443,12 @@ struct urb_priv { /* a control transfer, retrigger */ /* the status phase */ - unsigned long inserttime; /* In jiffies */ unsigned long fsbrtime; /* In jiffies */ - struct list_head queue_list; /* P: uhci->frame_list_lock */ + struct list_head queue_list; }; + /* * Locking in uhci.c * @@ -459,6 +468,5 @@ struct urb_priv { #define PCI_VENDOR_ID_GENESYS 0x17a0 #define PCI_DEVICE_ID_GL880S_UHCI 0x8083 -#define PCI_DEVICE_ID_GL880S_EHCI 0x8084 #endif diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index ea0d168a8c67..7e46887d9e12 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -89,10 +89,10 @@ static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td, td->frame = framenum; /* Is there a TD already mapped there? */ - if (uhci->fl->frame_cpu[framenum]) { + if (uhci->frame_cpu[framenum]) { struct uhci_td *ftd, *ltd; - ftd = uhci->fl->frame_cpu[framenum]; + ftd = uhci->frame_cpu[framenum]; ltd = list_entry(ftd->fl_list.prev, struct uhci_td, fl_list); list_add_tail(&td->fl_list, &ftd->fl_list); @@ -101,29 +101,32 @@ static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td, wmb(); ltd->link = cpu_to_le32(td->dma_handle); } else { - td->link = uhci->fl->frame[framenum]; + td->link = uhci->frame[framenum]; wmb(); - uhci->fl->frame[framenum] = cpu_to_le32(td->dma_handle); - uhci->fl->frame_cpu[framenum] = td; + uhci->frame[framenum] = cpu_to_le32(td->dma_handle); + uhci->frame_cpu[framenum] = td; } } -static void uhci_remove_td(struct uhci_hcd *uhci, struct uhci_td *td) +static inline void uhci_remove_td_frame_list(struct uhci_hcd *uhci, + struct uhci_td *td) { /* If it's not inserted, don't remove it */ - if (td->frame == -1 && list_empty(&td->fl_list)) + if (td->frame == -1) { + WARN_ON(!list_empty(&td->fl_list)); return; + } - if (td->frame != -1 && uhci->fl->frame_cpu[td->frame] == td) { + if (uhci->frame_cpu[td->frame] == td) { if (list_empty(&td->fl_list)) { - uhci->fl->frame[td->frame] = td->link; - uhci->fl->frame_cpu[td->frame] = NULL; + uhci->frame[td->frame] = td->link; + uhci->frame_cpu[td->frame] = NULL; } else { struct uhci_td *ntd; ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list); - uhci->fl->frame[td->frame] = cpu_to_le32(ntd->dma_handle); - uhci->fl->frame_cpu[td->frame] = ntd; + uhci->frame[td->frame] = cpu_to_le32(ntd->dma_handle); + uhci->frame_cpu[td->frame] = ntd; } } else { struct uhci_td *ptd; @@ -132,13 +135,20 @@ static void uhci_remove_td(struct uhci_hcd *uhci, struct uhci_td *td) ptd->link = td->link; } - wmb(); - td->link = UHCI_PTR_TERM; - list_del_init(&td->fl_list); td->frame = -1; } +static void unlink_isochronous_tds(struct uhci_hcd *uhci, struct urb *urb) +{ + struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv; + struct uhci_td *td; + + list_for_each_entry(td, &urbp->td_list, list) + uhci_remove_td_frame_list(uhci, td); + wmb(); +} + /* * Inserts a td list into qh. */ @@ -443,7 +453,6 @@ static struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci, struct urb *u memset((void *)urbp, 0, sizeof(*urbp)); - urbp->inserttime = jiffies; urbp->fsbrtime = jiffies; urbp->urb = urb; @@ -462,8 +471,6 @@ static void uhci_add_td_to_urb(struct urb *urb, struct uhci_td *td) { struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv; - td->urb = urb; - list_add_tail(&td->list, &urbp->td_list); } @@ -473,8 +480,6 @@ static void uhci_remove_td_from_urb(struct uhci_td *td) return; list_del_init(&td->list); - - td->urb = NULL; } static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb) @@ -503,7 +508,6 @@ static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb) list_for_each_entry_safe(td, tmp, &urbp->td_list, list) { uhci_remove_td_from_urb(td); - uhci_remove_td(uhci, td); list_add(&td->remove_list, &uhci->td_remove_list); } @@ -1073,6 +1077,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb) struct uhci_td *td; int i, ret, frame; int status, destination; + struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv; status = TD_CTRL_ACTIVE | TD_CTRL_IOS; destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe); @@ -1081,11 +1086,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb) if (ret) return ret; - frame = urb->start_frame; - for (i = 0; i < urb->number_of_packets; i++, frame += urb->interval) { - if (!urb->iso_frame_desc[i].length) - continue; - + for (i = 0; i < urb->number_of_packets; i++) { td = uhci_alloc_td(uhci); if (!td) return -ENOMEM; @@ -1096,8 +1097,12 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb) if (i + 1 >= urb->number_of_packets) td->status |= cpu_to_le32(TD_CTRL_IOC); + } + frame = urb->start_frame; + list_for_each_entry(td, &urbp->td_list, list) { uhci_insert_td_frame_list(uhci, td, frame); + frame += urb->interval; } return -EINPROGRESS; @@ -1110,7 +1115,7 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb) int status; int i, ret = 0; - urb->actual_length = 0; + urb->actual_length = urb->error_count = 0; i = 0; list_for_each_entry(td, &urbp->td_list, list) { @@ -1134,6 +1139,7 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb) i++; } + unlink_isochronous_tds(uhci, urb); return ret; } @@ -1164,7 +1170,7 @@ static struct urb *uhci_find_urb_ep(struct uhci_hcd *uhci, struct urb *urb) static int uhci_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep, - struct urb *urb, unsigned mem_flags) + struct urb *urb, gfp_t mem_flags) { int ret; struct uhci_hcd *uhci = hcd_to_uhci(hcd); @@ -1366,6 +1372,8 @@ static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) goto done; list_del_init(&urbp->urb_list); + if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) + unlink_isochronous_tds(uhci, urb); uhci_unlink_generic(uhci, urb); uhci_get_current_frame_number(uhci); |