X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fohci-pci.c;h=b268537e389eb04a228bab160b00e0f20dabd60d;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=73d9aee657d5636bc463f6203fd283df52ab4cf6;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index 73d9aee65..b268537e3 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -14,16 +14,6 @@ * This file is licenced under the GPL. */ -#ifdef CONFIG_PMAC_PBOOK -#include -#include -#include -#include -#ifndef CONFIG_PM -# define CONFIG_PM -#endif -#endif - #ifndef CONFIG_PCI #error "This file is PCI bus glue. CONFIG_PCI must be defined." #endif @@ -35,9 +25,8 @@ ohci_pci_reset (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); - ohci->regs = hcd->regs; - ohci->next_statechange = jiffies; - return hc_reset (ohci); + ohci_hcd_init (ohci); + return ohci_init (ohci); } static int __devinit @@ -46,12 +35,10 @@ ohci_pci_start (struct usb_hcd *hcd) struct ohci_hcd *ohci = hcd_to_ohci (hcd); int ret; - ohci->hcca = dma_alloc_coherent (hcd->self.controller, - sizeof *ohci->hcca, &ohci->hcca_dma, 0); - if (!ohci->hcca) - return -ENOMEM; - - if(hcd->self.controller && hcd->self.controller->bus == &pci_bus_type) { + /* REVISIT this whole block should move to reset(), which handles + * all the other one-time init. + */ + if (hcd->self.controller) { struct pci_dev *pdev = to_pci_dev(hcd->self.controller); /* AMD 756, for most chips (early revs), corrupts register @@ -60,7 +47,9 @@ ohci_pci_start (struct usb_hcd *hcd) if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x740c) { ohci->flags = OHCI_QUIRK_AMD756; - ohci_info (ohci, "AMD756 erratum 4 workaround\n"); + ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); + /* also erratum 10 (suspend/resume issues) */ + device_init_wakeup(&hcd->self.root_hub->dev, 0); } /* FIXME for some of the early AMD 760 southbridges, OHCI @@ -73,7 +62,7 @@ ohci_pci_start (struct usb_hcd *hcd) */ else if (pdev->vendor == PCI_VENDOR_ID_OPTI && pdev->device == 0xc861) { - ohci_info (ohci, + ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n"); } @@ -89,105 +78,76 @@ ohci_pci_start (struct usb_hcd *hcd) if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO && b->vendor == PCI_VENDOR_ID_NS) { ohci->flags |= OHCI_QUIRK_SUPERIO; - ohci_info (ohci, "Using NSC SuperIO setup\n"); + ohci_dbg (ohci, "Using NSC SuperIO setup\n"); } } - - } - memset (ohci->hcca, 0, sizeof (struct ohci_hcca)); - if ((ret = ohci_mem_init (ohci)) < 0) { - ohci_stop (hcd); - return ret; + /* Check for Compaq's ZFMicro chipset, which needs short + * delays before control or bulk queues get re-activated + * in finish_unlinks() + */ + else if (pdev->vendor == PCI_VENDOR_ID_COMPAQ + && pdev->device == 0xa0f8) { + ohci->flags |= OHCI_QUIRK_ZFMICRO; + ohci_dbg (ohci, + "enabled Compaq ZFMicro chipset quirk\n"); + } + + /* RWC may not be set for add-in PCI cards, since boot + * firmware probably ignored them. This transfers PCI + * PM wakeup capabilities (once the PCI layer is fixed). + */ + if (device_may_wakeup(&pdev->dev)) + ohci->hc_control |= OHCI_CTRL_RWC; } - if (hc_start (ohci) < 0) { + /* NOTE: there may have already been a first reset, to + * keep bios/smm irqs from making trouble + */ + if ((ret = ohci_run (ohci)) < 0) { ohci_err (ohci, "can't start\n"); ohci_stop (hcd); - return -EBUSY; + return ret; } - create_debug_files (ohci); - -#ifdef DEBUG - ohci_dump (ohci, 1); -#endif return 0; } #ifdef CONFIG_PM -static int ohci_pci_suspend (struct usb_hcd *hcd, u32 state) +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 */ - while (time_before (jiffies, ohci->next_statechange)) - msleep (100); - -#ifdef CONFIG_USB_SUSPEND - (void) usb_suspend_device (hcd->self.root_hub, state); -#else - down (&hcd->self.root_hub->serialize); - (void) ohci_hub_suspend (hcd); - up (&hcd->self.root_hub->serialize); -#endif - - /* let things settle down a bit */ - msleep (100); - -#ifdef CONFIG_PMAC_PBOOK - if (_machine == _MACH_Pmac) - disable_irq ((to_pci_dev(hcd->self.controller))->irq); - - { - struct device_node *of_node; - - /* Disable USB PAD & cell clock */ - of_node = pci_device_to_OF_node (to_pci_dev(hcd->self.controller)); - if (of_node) - pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0); + struct ohci_hcd *ohci = hcd_to_ohci (hcd); + unsigned long flags; + int rc = 0; + + /* Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + * + * This is still racy as hcd->state is manipulated outside of + * any locks =P But that will be a different fix. + */ + spin_lock_irqsave (&ohci->lock, flags); + if (hcd->state != HC_STATE_SUSPENDED) { + rc = -EINVAL; + goto bail; } -#endif - return 0; + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + (void)ohci_readl(ohci, &ohci->regs->intrdisable); + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + bail: + spin_unlock_irqrestore (&ohci->lock, flags); + + return rc; } static int ohci_pci_resume (struct usb_hcd *hcd) { - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int retval = 0; - -#ifdef CONFIG_PMAC_PBOOK - { - struct device_node *of_node; - - /* Re-enable USB PAD & cell clock */ - of_node = pci_device_to_OF_node (to_pci_dev(hcd->self.controller)); - if (of_node) - pmac_call_feature (PMAC_FTR_USB_ENABLE, of_node, 0, 1); - } -#endif - - /* resume root hub */ - while (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 - down (&hcd->self.root_hub->serialize); - retval = ohci_hub_resume (hcd); - up (&hcd->self.root_hub->serialize); -#endif - - if (retval == 0) { - hcd->self.controller->power.power_state = 0; -#ifdef CONFIG_PMAC_PBOOK - if (_machine == _MACH_Pmac) - enable_irq (to_pci_dev(hcd->self.controller)->irq); -#endif - } - return retval; + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + usb_hcd_resume_root_hub(hcd); + return 0; } #endif /* CONFIG_PM */ @@ -197,6 +157,8 @@ static int ohci_pci_resume (struct usb_hcd *hcd) static const struct hc_driver ohci_pci_hc_driver = { .description = hcd_name, + .product_desc = "OHCI Host Controller", + .hcd_priv_size = sizeof(struct ohci_hcd), /* * generic hardware linkage @@ -215,12 +177,6 @@ static const struct hc_driver ohci_pci_hc_driver = { #endif .stop = ohci_stop, - /* - * memory lifecycle (except per-request) - */ - .hcd_alloc = ohci_hcd_alloc, - .hcd_free = ohci_hcd_free, - /* * managing i/o requests and associated device resources */ @@ -238,9 +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, }; @@ -250,7 +206,7 @@ static const struct hc_driver ohci_pci_hc_driver = { static const struct pci_device_id pci_ids [] = { { /* handle any USB OHCI controller */ - PCI_DEVICE_CLASS((PCI_CLASS_SERIAL_USB << 8) | 0x10, ~0), + PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0), .driver_data = (unsigned long) &ohci_pci_hc_driver, }, { /* end: all zeroes */ } }; @@ -279,7 +235,7 @@ static int __init ohci_hcd_pci_init (void) pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name, sizeof (struct ed), sizeof (struct td)); - return pci_module_init (&ohci_pci_driver); + return pci_register_driver (&ohci_pci_driver); } module_init (ohci_hcd_pci_init);