# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.737 -> 1.738 # drivers/usb/host/usb-ohci-sa1111.c 1.2 -> (deleted) # drivers/usb/host/usb-ohci.h 1.14 -> (deleted) # drivers/usb/host/Config.in 1.13 -> 1.14 # drivers/usb/host/usb-ohci.c 1.36 -> (deleted) # drivers/usb/host/usb-ohci-pci.c 1.2 -> (deleted) # drivers/usb/host/Makefile 1.14 -> 1.15 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 02/07/18 greg@kroah.com 1.738 # USB: removed the usb-ohci driver, as it is no longer being used. # -------------------------------------------- # diff -Nru a/drivers/usb/host/Config.in b/drivers/usb/host/Config.in --- a/drivers/usb/host/Config.in Fri Jul 19 11:04:19 2002 +++ b/drivers/usb/host/Config.in Fri Jul 19 11:04:19 2002 @@ -6,6 +6,5 @@ dep_tristate ' OHCI HCD support' CONFIG_USB_OHCI_HCD $CONFIG_USB dep_tristate ' UHCI HCD (most Intel and VIA) support' CONFIG_USB_UHCI_HCD_ALT $CONFIG_USB if [ "$CONFIG_ARM" = "y" ]; then - dep_tristate ' SA1111 OHCI-compatible host interface support' CONFIG_USB_OHCI_SA1111 $CONFIG_USB dep_tristate ' SL811HS support' CONFIG_USB_SL811HS $CONFIG_USB fi diff -Nru a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile --- a/drivers/usb/host/Makefile Fri Jul 19 11:04:20 2002 +++ b/drivers/usb/host/Makefile Fri Jul 19 11:04:20 2002 @@ -9,8 +9,6 @@ obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o obj-$(CONFIG_USB_UHCI_HCD_ALT) += uhci-hcd.o -obj-$(CONFIG_USB_OHCI) += usb-ohci.o usb-ohci-pci.o -obj-$(CONFIG_USB_OHCI_SA1111) += usb-ohci.o usb-ohci-sa1111.o obj-$(CONFIG_USB_SL811HS) += hc_sl811.o include $(TOPDIR)/Rules.make diff -Nru a/drivers/usb/host/usb-ohci-pci.c b/drivers/usb/host/usb-ohci-pci.c --- a/drivers/usb/host/usb-ohci-pci.c Fri Jul 19 11:04:20 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,456 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include /* for in_interrupt() */ -#undef DEBUG -#include - -#include "../core/hcd.h" -#include "usb-ohci.h" - -#ifdef CONFIG_PMAC_PBOOK -#include -#include -#include -#ifndef CONFIG_PM -#define CONFIG_PM -#endif -#endif - -int __devinit -hc_add_ohci(struct pci_dev *dev, int irq, void *membase, unsigned long flags, - ohci_t **ohci, const char *name, const char *slot_name); -extern void hc_remove_ohci(ohci_t *ohci); -extern int hc_start (ohci_t * ohci, struct device *parent_dev); -extern int hc_reset (ohci_t * ohci); - -/*-------------------------------------------------------------------------*/ - -/* Increment the module usage count, start the control thread and - * return success. */ - -static struct pci_driver ohci_pci_driver; - -static int __devinit -hc_found_ohci (struct pci_dev *dev, int irq, - void *mem_base, const struct pci_device_id *id) -{ - u8 latency, limit; - ohci_t * ohci; - int ret; - - printk(KERN_INFO __FILE__ ": usb-%s, %s\n", dev->slot_name, dev->name); - - /* bad pci latencies can contribute to overruns */ - pci_read_config_byte (dev, PCI_LATENCY_TIMER, &latency); - if (latency) { - pci_read_config_byte (dev, PCI_MAX_LAT, &limit); - if (limit && limit < latency) { - dbg ("PCI latency reduced to max %d", limit); - pci_write_config_byte (dev, PCI_LATENCY_TIMER, limit); - latency = limit; - } - } - - ret = hc_add_ohci(dev, irq, mem_base, id->driver_data, - &ohci, ohci_pci_driver.name, dev->slot_name); - - if (ret == 0) { - ohci->pci_latency = latency; - - if (hc_start (ohci, &ohci->ohci_dev->dev) < 0) { - err ("can't start usb-%s", ohci->slot_name); - hc_remove_ohci(ohci); - return -EBUSY; - } - -#ifdef DEBUG - ohci_dump (ohci, 1); -#endif - } - - return ret; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_PM - -/* controller died; cleanup debris, then restart */ -/* must not be called from interrupt context */ - -static void hc_restart (ohci_t *ohci) -{ - int temp; - int i; - - if (ohci->pci_latency) - pci_write_config_byte (ohci->ohci_dev, PCI_LATENCY_TIMER, ohci->pci_latency); - - ohci->disabled = 1; - ohci->sleeping = 0; - if (ohci->bus->root_hub) - usb_disconnect (&ohci->bus->root_hub); - - /* empty the interrupt branches */ - for (i = 0; i < NUM_INTS; i++) ohci->ohci_int_load[i] = 0; - for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table[i] = 0; - - /* no EDs to remove */ - ohci->ed_rm_list [0] = NULL; - ohci->ed_rm_list [1] = NULL; - - /* empty control and bulk lists */ - ohci->ed_isotail = NULL; - ohci->ed_controltail = NULL; - ohci->ed_bulktail = NULL; - - if ((temp = hc_reset (ohci)) < 0 || - (temp = hc_start (ohci, &ohci->ohci_dev->dev)) < 0) { - err ("can't restart usb-%s, %d", ohci->ohci_dev->slot_name, temp); - } else - dbg ("restart usb-%s completed", ohci->ohci_dev->slot_name); -} - -#endif /* CONFIG_PM */ - -/*-------------------------------------------------------------------------*/ - -/* configured so that an OHCI device is always provided */ -/* always called with process context; sleeping is OK */ - -static int __devinit -ohci_pci_probe (struct pci_dev *dev, const struct pci_device_id *id) -{ - unsigned long mem_resource, mem_len; - void *mem_base; - int status; - - if (pci_enable_device(dev) < 0) - return -ENODEV; - - if (!dev->irq) { - err("found OHCI device with no IRQ assigned. check BIOS settings!"); - pci_disable_device (dev); - return -ENODEV; - } - - /* we read its hardware registers as memory */ - mem_resource = pci_resource_start(dev, 0); - mem_len = pci_resource_len(dev, 0); - if (!request_mem_region (mem_resource, mem_len, ohci_pci_driver.name)) { - dbg ("controller already in use"); - pci_disable_device (dev); - return -EBUSY; - } - - mem_base = ioremap_nocache (mem_resource, mem_len); - if (!mem_base) { - err("Error mapping OHCI memory"); - release_mem_region(mem_resource, mem_len); - pci_disable_device (dev); - return -EFAULT; - } - - /* controller writes into our memory */ - pci_set_master (dev); - - status = hc_found_ohci (dev, dev->irq, mem_base, id); - if (status < 0) { - iounmap (mem_base); - release_mem_region(mem_resource, mem_len); - pci_disable_device (dev); - } - return status; -} - -/*-------------------------------------------------------------------------*/ - -/* may be called from interrupt context [interface spec] */ -/* may be called without controller present */ -/* may be called with controller, bus, and devices active */ - -static void __devexit -ohci_pci_remove (struct pci_dev *dev) -{ - ohci_t *ohci = (ohci_t *) pci_get_drvdata(dev); - void *membase = ohci->regs; - - dbg ("remove %s controller usb-%s%s%s", - hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS), - dev->slot_name, - ohci->disabled ? " (disabled)" : "", - in_interrupt () ? " in interrupt" : "" - ); - - hc_remove_ohci(ohci); - - /* unmap the IO address space */ - iounmap (membase); - - release_mem_region (pci_resource_start (dev, 0), pci_resource_len (dev, 0)); -} - - -#ifdef CONFIG_PM - -/*-------------------------------------------------------------------------*/ - -static int -ohci_pci_suspend (struct pci_dev *dev, u32 state) -{ - ohci_t *ohci = (ohci_t *) pci_get_drvdata(dev); - unsigned long flags; - u16 cmd; - - if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER) { - dbg ("can't suspend usb-%s (state is %s)", dev->slot_name, - hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS)); - return -EIO; - } - - /* act as if usb suspend can always be used */ - info ("USB suspend: usb-%s", dev->slot_name); - ohci->sleeping = 1; - - /* First stop processing */ - spin_lock_irqsave (&usb_ed_lock, flags); - ohci->hc_control &= ~(OHCI_CTRL_PLE|OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_IE); - writel (ohci->hc_control, &ohci->regs->control); - writel (OHCI_INTR_SF, &ohci->regs->intrstatus); - (void) readl (&ohci->regs->intrstatus); - spin_unlock_irqrestore (&usb_ed_lock, flags); - - /* Wait a frame or two */ - mdelay(1); - if (!readl (&ohci->regs->intrstatus) & OHCI_INTR_SF) - mdelay (1); - -#ifdef CONFIG_PMAC_PBOOK - if (_machine == _MACH_Pmac) - disable_irq (ohci->irq); - /* else, 2.4 assumes shared irqs -- don't disable */ -#endif - /* Enable remote wakeup */ - writel (readl(&ohci->regs->intrenable) | OHCI_INTR_RD, &ohci->regs->intrenable); - - /* Suspend chip and let things settle down a bit */ - ohci->hc_control = OHCI_USB_SUSPEND; - writel (ohci->hc_control, &ohci->regs->control); - (void) readl (&ohci->regs->control); - mdelay (500); /* No schedule here ! */ - switch (readl (&ohci->regs->control) & OHCI_CTRL_HCFS) { - case OHCI_USB_RESET: - dbg("Bus in reset phase ???"); - break; - case OHCI_USB_RESUME: - dbg("Bus in resume phase ???"); - break; - case OHCI_USB_OPER: - dbg("Bus in operational phase ???"); - break; - case OHCI_USB_SUSPEND: - dbg("Bus suspended"); - break; - } - /* In some rare situations, Apple's OHCI have happily trashed - * memory during sleep. We disable it's bus master bit during - * suspend - */ - pci_read_config_word (dev, PCI_COMMAND, &cmd); - cmd &= ~PCI_COMMAND_MASTER; - pci_write_config_word (dev, PCI_COMMAND, cmd); -#ifdef CONFIG_PMAC_PBOOK - { - struct device_node *of_node; - - /* Disable USB PAD & cell clock */ - of_node = pci_device_to_OF_node (ohci->ohci_dev); - if (of_node && _machine == _MACH_Pmac) - pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0); - } -#endif - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static int -ohci_pci_resume (struct pci_dev *dev) -{ - ohci_t *ohci = (ohci_t *) pci_get_drvdata(dev); - int temp; - unsigned long flags; - - /* guard against multiple resumes */ - atomic_inc (&ohci->resume_count); - if (atomic_read (&ohci->resume_count) != 1) { - err ("concurrent PCI resumes for usb-%s", dev->slot_name); - atomic_dec (&ohci->resume_count); - return 0; - } - -#ifdef CONFIG_PMAC_PBOOK - { - struct device_node *of_node; - - /* Re-enable USB PAD & cell clock */ - of_node = pci_device_to_OF_node (ohci->ohci_dev); - if (of_node && _machine == _MACH_Pmac) - pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 1); - } -#endif - - /* did we suspend, or were we powered off? */ - ohci->hc_control = readl (&ohci->regs->control); - temp = ohci->hc_control & OHCI_CTRL_HCFS; - -#ifdef DEBUG - /* the registers may look crazy here */ - ohci_dump_status (ohci); -#endif - - /* Re-enable bus mastering */ - pci_set_master(ohci->ohci_dev); - - switch (temp) { - - case OHCI_USB_RESET: // lost power - info ("USB restart: usb-%s", dev->slot_name); - hc_restart (ohci); - break; - - case OHCI_USB_SUSPEND: // host wakeup - case OHCI_USB_RESUME: // remote wakeup - info ("USB continue: usb-%s from %s wakeup", dev->slot_name, - (temp == OHCI_USB_SUSPEND) - ? "host" : "remote"); - ohci->hc_control = OHCI_USB_RESUME; - writel (ohci->hc_control, &ohci->regs->control); - (void) readl (&ohci->regs->control); - mdelay (20); /* no schedule here ! */ - /* Some controllers (lucent) need a longer delay here */ - mdelay (15); - temp = readl (&ohci->regs->control); - temp = ohci->hc_control & OHCI_CTRL_HCFS; - if (temp != OHCI_USB_RESUME) { - err ("controller usb-%s won't resume", dev->slot_name); - ohci->disabled = 1; - return -EIO; - } - - /* Some chips likes being resumed first */ - writel (OHCI_USB_OPER, &ohci->regs->control); - (void) readl (&ohci->regs->control); - mdelay (3); - - /* Then re-enable operations */ - spin_lock_irqsave (&usb_ed_lock, flags); - ohci->disabled = 0; - ohci->sleeping = 0; - ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER; - if (!ohci->ed_rm_list[0] && !ohci->ed_rm_list[1]) { - if (ohci->ed_controltail) - ohci->hc_control |= OHCI_CTRL_CLE; - if (ohci->ed_bulktail) - ohci->hc_control |= OHCI_CTRL_BLE; - } - writel (ohci->hc_control, &ohci->regs->control); - writel (OHCI_INTR_SF, &ohci->regs->intrstatus); - writel (OHCI_INTR_SF, &ohci->regs->intrenable); - /* Check for a pending done list */ - writel (OHCI_INTR_WDH, &ohci->regs->intrdisable); - (void) readl (&ohci->regs->intrdisable); - spin_unlock_irqrestore (&usb_ed_lock, flags); -#ifdef CONFIG_PMAC_PBOOK - if (_machine == _MACH_Pmac) - enable_irq (ohci->irq); -#endif - if (ohci->hcca->done_head) - dl_done_list (ohci, dl_reverse_done_list (ohci)); - writel (OHCI_INTR_WDH, &ohci->regs->intrenable); - writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */ - writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */ - break; - - default: - warn ("odd PCI resume for usb-%s", dev->slot_name); - } - - /* controller is operational, extra resumes are harmless */ - atomic_dec (&ohci->resume_count); - - return 0; -} - -#endif /* CONFIG_PM */ - - -/*-------------------------------------------------------------------------*/ - -static const struct pci_device_id __devinitdata ohci_pci_ids [] = { { - - /* - * AMD-756 [Viper] USB has a serious erratum when used with - * lowspeed devices like mice. - */ - vendor: 0x1022, - device: 0x740c, - subvendor: PCI_ANY_ID, - subdevice: PCI_ANY_ID, - - driver_data: OHCI_QUIRK_AMD756, - -} , { - - /* handle any USB OHCI controller */ - class: ((PCI_CLASS_SERIAL_USB << 8) | 0x10), - class_mask: ~0, - - /* no matter who makes it */ - vendor: PCI_ANY_ID, - device: PCI_ANY_ID, - subvendor: PCI_ANY_ID, - subdevice: PCI_ANY_ID, - - }, { /* end: all zeroes */ } -}; - -MODULE_DEVICE_TABLE (pci, ohci_pci_ids); - -static struct pci_driver ohci_pci_driver = { - name: "usb-ohci", - id_table: &ohci_pci_ids [0], - - probe: ohci_pci_probe, - remove: __devexit_p(ohci_pci_remove), - -#ifdef CONFIG_PM - suspend: ohci_pci_suspend, - resume: ohci_pci_resume, -#endif /* PM */ -}; - - -/*-------------------------------------------------------------------------*/ - -static int __init ohci_hcd_init (void) -{ - return pci_module_init (&ohci_pci_driver); -} - -/*-------------------------------------------------------------------------*/ - -static void __exit ohci_hcd_cleanup (void) -{ - pci_unregister_driver (&ohci_pci_driver); -} - -module_init (ohci_hcd_init); -module_exit (ohci_hcd_cleanup); - -MODULE_LICENSE("GPL"); diff -Nru a/drivers/usb/host/usb-ohci-sa1111.c b/drivers/usb/host/usb-ohci-sa1111.c --- a/drivers/usb/host/usb-ohci-sa1111.c Fri Jul 19 11:04:19 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,153 +0,0 @@ -/* - * linux/drivers/usb/usb-ohci-sa1111.c - * - * The outline of this code was taken from Brad Parkers - * original OHCI driver modifications, and reworked into a cleaner form - * by Russell King . - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include "usb-ohci.h" - -int __devinit -hc_add_ohci(struct pci_dev *dev, int irq, void *membase, unsigned long flags, - ohci_t **ohci, const char *name, const char *slot_name); -extern void hc_remove_ohci(ohci_t *ohci); -extern int hc_start (ohci_t * ohci, struct device *parent_dev); -extern int hc_reset (ohci_t * ohci); - - -static ohci_t *sa1111_ohci; - -static void __init sa1111_ohci_configure(void) -{ - unsigned int usb_rst = 0; - - printk(KERN_DEBUG __FILE__ - ": starting SA-1111 OHCI USB Controller\n"); - -#ifdef CONFIG_SA1100_BADGE4 - if (machine_is_badge4()) - /* power the bus */ - badge4_set_5V(BADGE4_5V_USB, 1); -#endif - - if (machine_is_xp860() || - machine_has_neponset() || - machine_is_pfs168() || - machine_is_badge4()) - usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW; - - /* - * Configure the power sense and control lines. Place the USB - * host controller in reset. - */ - USB_RESET = usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET; - - /* - * Now, carefully enable the USB clock, and take - * the USB host controller out of reset. - */ - SKPCR |= SKPCR_UCLKEN; - udelay(11); - USB_RESET = usb_rst; -} - -static void __exit sa1111_ohci_unconfigure(void) -{ - printk(KERN_DEBUG __FILE__ - ": stopping SA-1111 OHCI USB Controller\n"); - - /* - * Put the USB host controller into reset. - */ - USB_RESET |= USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET; - - /* - * Stop the USB clock. - */ - SKPCR &= ~SKPCR_UCLKEN; - -#ifdef CONFIG_SA1100_BADGE4 - if (machine_is_badge4()) - badge4_set_5V(BADGE4_5V_USB, 0); -#endif -} - - -static int __init sa1111_ohci_init(void) -{ - int ret; - - if (!sa1111) - return -ENODEV; - - /* - * Request memory resources. - */ - if (!request_mem_region(_USB_OHCI_OP_BASE, _USB_EXTENT, "usb-ohci")) - return -EBUSY; - - sa1111_ohci_configure(); - - /* - * Initialise the generic OHCI driver. - */ - sa1111_ohci = 0; - ret = hc_add_ohci(SA1111_FAKE_PCIDEV, NIRQHCIM, - (void *)&USB_OHCI_OP_BASE, 0, &sa1111_ohci, - "usb-ohci", "sa1111"); - - if (ret || !sa1111_ohci) { - sa1111_ohci = 0; - sa1111_ohci_unconfigure(); - release_mem_region(_USB_OHCI_OP_BASE, _USB_EXTENT); - return -EBUSY; - } - - if (hc_start (sa1111_ohci, &sa1111->dev) < 0) { - err ("can't start usb-%s", sa1111_ohci->slot_name); - hc_remove_ohci (sa1111_ohci); - sa1111_ohci = 0; - sa1111_ohci_unconfigure(); - release_mem_region(_USB_OHCI_OP_BASE, _USB_EXTENT); - return -EBUSY; - } - - return 0; -} - -static void __exit sa1111_ohci_exit(void) -{ - printk(KERN_DEBUG __FUNCTION__ ": cleaning up\n"); - - if (sa1111_ohci) { - hc_remove_ohci(sa1111_ohci); - sa1111_ohci = 0; - } - - sa1111_ohci_unconfigure(); - release_mem_region(_USB_OHCI_OP_BASE, _USB_EXTENT); - - printk(KERN_DEBUG __FUNCTION__ ": exiting\n"); -} - -module_init(sa1111_ohci_init); -module_exit(sa1111_ohci_exit); - -MODULE_LICENSE("GPL"); diff -Nru a/drivers/usb/host/usb-ohci.c b/drivers/usb/host/usb-ohci.c --- a/drivers/usb/host/usb-ohci.c Fri Jul 19 11:04:20 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,2537 +0,0 @@ -/* - * URB OHCI HCD (Host Controller Driver) for USB. - * - * (C) Copyright 1999 Roman Weissgaerber - * (C) Copyright 2000-2002 David Brownell - * - * [ Initialisation is based on Linus' ] - * [ uhci code and gregs ohci fragments ] - * [ (C) Copyright 1999 Linus Torvalds ] - * [ (C) Copyright 1999 Gregory P. Smith] - * - * - * History: - * - * 2002/03/08 interrupt unlink fix (Matt Hughes), better cleanup on - * load failure (Matthew Frederickson) - * 2002/01/20 async unlink fixes: return -EINPROGRESS (per spec) and - * make interrupt unlink-in-completion work (db) - * - * 2001/09/19 USB_ZERO_PACKET support (Jean Tourrilhes) - * 2001/07/17 power management and pmac cleanup (Benjamin Herrenschmidt) - * 2001/03/24 td/ed hashing to remove bus_to_virt (Steve Longerbeam); - pci_map_single (db) - * 2001/03/21 td and dev/ed allocation uses new pci_pool API (db) - * 2001/03/07 hcca allocation uses pci_alloc_consistent (Steve Longerbeam) - * - * 2000/09/26 fixed races in removing the private portion of the urb - * 2000/09/07 disable bulk and control lists when unlinking the last - * endpoint descriptor in order to avoid unrecoverable errors on - * the Lucent chips. (rwc@sgi) - * 2000/08/29 use bandwidth claiming hooks (thanks Randy!), fix some - * urb unlink probs, indentation fixes - * 2000/08/11 various oops fixes mostly affecting iso and cleanup from - * device unplugs. - * 2000/06/28 use PCI hotplug framework, for better power management - * and for Cardbus support (David Brownell) - * 2000/earlier: fixes for NEC/Lucent chips; suspend/resume handling - * when the controller loses power; handle UE; cleanup; ... - * - * v5.2 1999/12/07 URB 3rd preview, - * v5.1 1999/11/30 URB 2nd preview, cpia, (usb-scsi) - * v5.0 1999/11/22 URB Technical preview, Paul Mackerras powerbook susp/resume - * i386: HUB, Keyboard, Mouse, Printer - * - * v4.3 1999/10/27 multiple HCs, bulk_request - * v4.2 1999/09/05 ISO API alpha, new dev alloc, neg Error-codes - * v4.1 1999/08/27 Randy Dunlap's - ISO API first impl. - * v4.0 1999/08/18 - * v3.0 1999/06/25 - * v2.1 1999/05/09 code clean up - * v2.0 1999/05/04 - * v1.0 1999/04/27 initial release - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include /* for in_interrupt() */ - -#ifdef CONFIG_USB_DEBUG -# define DEBUG -#else -# undef DEBUG -#endif -#include - -#include -#include -#include -#include -#include - -#define OHCI_USE_NPS // force NoPowerSwitching mode -// #define OHCI_VERBOSE_DEBUG /* not always helpful */ - -#include "../core/hcd.h" -#include "usb-ohci.h" - - -/* - * Version Information - */ -#define DRIVER_VERSION "v5.3" -#define DRIVER_AUTHOR "Roman Weissgaerber , David Brownell" -#define DRIVER_DESC "USB OHCI Host Controller Driver" - -#define OHCI_UNLINK_TIMEOUT (HZ / 10) - -static LIST_HEAD (ohci_hcd_list); -spinlock_t usb_ed_lock = SPIN_LOCK_UNLOCKED; - - -/*-------------------------------------------------------------------------*/ - -/* AMD-756 (D2 rev) reports corrupt register contents in some cases. - * The erratum (#4) description is incorrect. AMD's workaround waits - * till some bits (mostly reserved) are clear; ok for all revs. - */ -#define read_roothub(hc, register, mask) ({ \ - u32 temp = readl (&hc->regs->roothub.register); \ - if (hc->flags & OHCI_QUIRK_AMD756) \ - while (temp & mask) \ - temp = readl (&hc->regs->roothub.register); \ - temp; }) - -static u32 roothub_a (struct ohci *hc) - { return read_roothub (hc, a, 0xfc0fe000); } -static inline u32 roothub_b (struct ohci *hc) - { return readl (&hc->regs->roothub.b); } -static inline u32 roothub_status (struct ohci *hc) - { return readl (&hc->regs->roothub.status); } -static u32 roothub_portstatus (struct ohci *hc, int i) - { return read_roothub (hc, portstatus [i], 0xffe0fce0); } - - -/*-------------------------------------------------------------------------* - * URB support functions - *-------------------------------------------------------------------------*/ - -/* free HCD-private data associated with this URB */ - -static void urb_free_priv (struct ohci *hc, urb_priv_t * urb_priv) -{ - int i; - int last = urb_priv->length - 1; - int len; - int dir; - struct td *td; - - if (last >= 0) { - - /* ISOC, BULK, INTR data buffer starts at td 0 - * CTRL setup starts at td 0 */ - td = urb_priv->td [0]; - - len = td->urb->transfer_buffer_length, - dir = usb_pipeout (td->urb->pipe) - ? PCI_DMA_TODEVICE - : PCI_DMA_FROMDEVICE; - - /* unmap CTRL URB setup */ - if (usb_pipecontrol (td->urb->pipe)) { - pci_unmap_single (hc->ohci_dev, - td->data_dma, 8, PCI_DMA_TODEVICE); - - /* CTRL data buffer starts at td 1 if len > 0 */ - if (len && last > 0) - td = urb_priv->td [1]; - } - - /* unmap data buffer */ - if (len && td->data_dma) - pci_unmap_single (hc->ohci_dev, td->data_dma, len, dir); - - for (i = 0; i <= last; i++) { - td = urb_priv->td [i]; - if (td) - td_free (hc, td); - } - } - - kfree (urb_priv); -} - -static void urb_rm_priv_locked (struct urb * urb) -{ - urb_priv_t * urb_priv = urb->hcpriv; - - if (urb_priv) { - urb->hcpriv = NULL; - -#ifdef DO_TIMEOUTS - if (urb->timeout) { - list_del (&urb->urb_list); - urb->timeout -= jiffies; - } -#endif - - /* Release int/iso bandwidth */ - if (urb->bandwidth) { - switch (usb_pipetype(urb->pipe)) { - case PIPE_INTERRUPT: - usb_release_bandwidth (urb->dev, urb, 0); - break; - case PIPE_ISOCHRONOUS: - usb_release_bandwidth (urb->dev, urb, 1); - break; - default: - break; - } - } - - urb_free_priv ((struct ohci *)urb->dev->bus->hcpriv, urb_priv); - usb_put_dev (urb->dev); - urb->dev = NULL; - usb_put_urb (urb); - } -} - -static void urb_rm_priv (struct urb * urb) -{ - unsigned long flags; - - spin_lock_irqsave (&usb_ed_lock, flags); - urb_rm_priv_locked (urb); - spin_unlock_irqrestore (&usb_ed_lock, flags); -} - -/*-------------------------------------------------------------------------*/ - -#ifdef DEBUG -static int sohci_get_current_frame_number (struct usb_device * dev); - -/* debug| print the main components of an URB - * small: 0) header + data packets 1) just header */ - -static void urb_print (struct urb * urb, char * str, int small) -{ - unsigned int pipe= urb->pipe; - - if (!urb->dev || !urb->dev->bus) { - dbg("%s URB: no dev", str); - return; - } - -#ifndef OHCI_VERBOSE_DEBUG - if (urb->status != 0) -#endif - dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,flags:%4x,len:%d/%d,stat:%d(%x)", - str, - sohci_get_current_frame_number (urb->dev), - usb_pipedevice (pipe), - usb_pipeendpoint (pipe), - usb_pipeout (pipe)? 'O': 'I', - usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"): - (usb_pipecontrol (pipe)? "CTRL": "BULK"), - urb->transfer_flags, - urb->actual_length, - urb->transfer_buffer_length, - urb->status, urb->status); -#ifdef OHCI_VERBOSE_DEBUG - if (!small) { - int i, len; - - if (usb_pipecontrol (pipe)) { - printk (KERN_DEBUG __FILE__ ": cmd(8):"); - for (i = 0; i < 8 ; i++) - printk (" %02x", ((__u8 *) urb->setup_packet) [i]); - printk ("\n"); - } - if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) { - printk (KERN_DEBUG __FILE__ ": data(%d/%d):", - urb->actual_length, - urb->transfer_buffer_length); - len = usb_pipeout (pipe)? - urb->transfer_buffer_length: urb->actual_length; - for (i = 0; i < 16 && i < len; i++) - printk (" %02x", ((__u8 *) urb->transfer_buffer) [i]); - printk ("%s stat:%d\n", i < len? "...": "", urb->status); - } - } -#endif -} - -/* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/ -void ep_print_int_eds (ohci_t * ohci, char * str) { - int i, j; - __u32 * ed_p; - for (i= 0; i < 32; i++) { - j = 5; - ed_p = &(ohci->hcca->int_table [i]); - if (*ed_p == 0) - continue; - printk (KERN_DEBUG __FILE__ ": %s branch int %2d(%2x):", str, i, i); - while (*ed_p != 0 && j--) { - ed_t *ed = dma_to_ed (ohci, le32_to_cpup(ed_p)); - printk (" ed: %4x;", ed->hwINFO); - ed_p = &ed->hwNextED; - } - printk ("\n"); - } -} - - -static void ohci_dump_intr_mask (char *label, __u32 mask) -{ - dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s", - label, - mask, - (mask & OHCI_INTR_MIE) ? " MIE" : "", - (mask & OHCI_INTR_OC) ? " OC" : "", - (mask & OHCI_INTR_RHSC) ? " RHSC" : "", - (mask & OHCI_INTR_FNO) ? " FNO" : "", - (mask & OHCI_INTR_UE) ? " UE" : "", - (mask & OHCI_INTR_RD) ? " RD" : "", - (mask & OHCI_INTR_SF) ? " SF" : "", - (mask & OHCI_INTR_WDH) ? " WDH" : "", - (mask & OHCI_INTR_SO) ? " SO" : "" - ); -} - -static void maybe_print_eds (char *label, __u32 value) -{ - if (value) - dbg ("%s %08x", label, value); -} - -static char *hcfs2string (int state) -{ - switch (state) { - case OHCI_USB_RESET: return "reset"; - case OHCI_USB_RESUME: return "resume"; - case OHCI_USB_OPER: return "operational"; - case OHCI_USB_SUSPEND: return "suspend"; - } - return "?"; -} - -// dump control and status registers -static void ohci_dump_status (ohci_t *controller) -{ - struct ohci_regs *regs = controller->regs; - __u32 temp; - - temp = readl (®s->revision) & 0xff; - if (temp != 0x10) - dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f)); - - temp = readl (®s->control); - dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp, - (temp & OHCI_CTRL_RWE) ? " RWE" : "", - (temp & OHCI_CTRL_RWC) ? " RWC" : "", - (temp & OHCI_CTRL_IR) ? " IR" : "", - hcfs2string (temp & OHCI_CTRL_HCFS), - (temp & OHCI_CTRL_BLE) ? " BLE" : "", - (temp & OHCI_CTRL_CLE) ? " CLE" : "", - (temp & OHCI_CTRL_IE) ? " IE" : "", - (temp & OHCI_CTRL_PLE) ? " PLE" : "", - temp & OHCI_CTRL_CBSR - ); - - temp = readl (®s->cmdstatus); - dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp, - (temp & OHCI_SOC) >> 16, - (temp & OHCI_OCR) ? " OCR" : "", - (temp & OHCI_BLF) ? " BLF" : "", - (temp & OHCI_CLF) ? " CLF" : "", - (temp & OHCI_HCR) ? " HCR" : "" - ); - - ohci_dump_intr_mask ("intrstatus", readl (®s->intrstatus)); - ohci_dump_intr_mask ("intrenable", readl (®s->intrenable)); - // intrdisable always same as intrenable - // ohci_dump_intr_mask ("intrdisable", readl (®s->intrdisable)); - - maybe_print_eds ("ed_periodcurrent", readl (®s->ed_periodcurrent)); - - maybe_print_eds ("ed_controlhead", readl (®s->ed_controlhead)); - maybe_print_eds ("ed_controlcurrent", readl (®s->ed_controlcurrent)); - - maybe_print_eds ("ed_bulkhead", readl (®s->ed_bulkhead)); - maybe_print_eds ("ed_bulkcurrent", readl (®s->ed_bulkcurrent)); - - maybe_print_eds ("donehead", readl (®s->donehead)); -} - -static void ohci_dump_roothub (ohci_t *controller, int verbose) -{ - __u32 temp, ndp, i; - - temp = roothub_a (controller); - ndp = (temp & RH_A_NDP); - - if (verbose) { - dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp, - ((temp & RH_A_POTPGT) >> 24) & 0xff, - (temp & RH_A_NOCP) ? " NOCP" : "", - (temp & RH_A_OCPM) ? " OCPM" : "", - (temp & RH_A_DT) ? " DT" : "", - (temp & RH_A_NPS) ? " NPS" : "", - (temp & RH_A_PSM) ? " PSM" : "", - ndp - ); - temp = roothub_b (controller); - dbg ("roothub.b: %08x PPCM=%04x DR=%04x", - temp, - (temp & RH_B_PPCM) >> 16, - (temp & RH_B_DR) - ); - temp = roothub_status (controller); - dbg ("roothub.status: %08x%s%s%s%s%s%s", - temp, - (temp & RH_HS_CRWE) ? " CRWE" : "", - (temp & RH_HS_OCIC) ? " OCIC" : "", - (temp & RH_HS_LPSC) ? " LPSC" : "", - (temp & RH_HS_DRWE) ? " DRWE" : "", - (temp & RH_HS_OCI) ? " OCI" : "", - (temp & RH_HS_LPS) ? " LPS" : "" - ); - } - - for (i = 0; i < ndp; i++) { - temp = roothub_portstatus (controller, i); - dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s", - i, - temp, - (temp & RH_PS_PRSC) ? " PRSC" : "", - (temp & RH_PS_OCIC) ? " OCIC" : "", - (temp & RH_PS_PSSC) ? " PSSC" : "", - (temp & RH_PS_PESC) ? " PESC" : "", - (temp & RH_PS_CSC) ? " CSC" : "", - - (temp & RH_PS_LSDA) ? " LSDA" : "", - (temp & RH_PS_PPS) ? " PPS" : "", - (temp & RH_PS_PRS) ? " PRS" : "", - (temp & RH_PS_POCI) ? " POCI" : "", - (temp & RH_PS_PSS) ? " PSS" : "", - - (temp & RH_PS_PES) ? " PES" : "", - (temp & RH_PS_CCS) ? " CCS" : "" - ); - } -} - -static void ohci_dump (ohci_t *controller, int verbose) -{ - dbg ("OHCI controller usb-%s state", controller->slot_name); - - // dumps some of the state we know about - ohci_dump_status (controller); - if (verbose) - ep_print_int_eds (controller, "hcca"); - dbg ("hcca frame #%04x", controller->hcca->frame_no); - ohci_dump_roothub (controller, 1); -} - - -#endif - -/*-------------------------------------------------------------------------* - * Interface functions (URB) - *-------------------------------------------------------------------------*/ - -/* return a request to the completion handler */ - -static int sohci_return_urb (struct ohci *hc, struct urb * urb) -{ - urb_priv_t * urb_priv = urb->hcpriv; - struct urb * urbt = NULL; - unsigned long flags; - int i; - - if (!urb_priv) - return -1; /* urb already unlinked */ - - /* just to be sure */ - if (!urb->complete) { - urb_rm_priv (urb); - return -1; - } - -#ifdef DEBUG - urb_print (urb, "RET", usb_pipeout (urb->pipe)); -#endif - - switch (usb_pipetype (urb->pipe)) { - case PIPE_INTERRUPT: - pci_unmap_single (hc->ohci_dev, - urb_priv->td [0]->data_dma, - urb->transfer_buffer_length, - usb_pipeout (urb->pipe) - ? PCI_DMA_TODEVICE - : PCI_DMA_FROMDEVICE); - urb->complete (urb); - - /* implicitly requeued */ - urb->actual_length = 0; - urb->status = -EINPROGRESS; - td_submit_urb (urb); - break; - - case PIPE_ISOCHRONOUS: - // for (urbt = urb->next; urbt && (urbt != urb); urbt = urbt->next); - if (urbt) { /* send the reply and requeue URB */ - pci_unmap_single (hc->ohci_dev, - urb_priv->td [0]->data_dma, - urb->transfer_buffer_length, - usb_pipeout (urb->pipe) - ? PCI_DMA_TODEVICE - : PCI_DMA_FROMDEVICE); - urb->complete (urb); - spin_lock_irqsave (&usb_ed_lock, flags); - urb->actual_length = 0; - urb->status = -EINPROGRESS; - urb->start_frame = urb_priv->ed->last_iso + 1; - if (urb_priv->state != URB_DEL) { - for (i = 0; i < urb->number_of_packets; i++) { - urb->iso_frame_desc[i].actual_length = 0; - urb->iso_frame_desc[i].status = -EXDEV; - } - td_submit_urb (urb); - } - spin_unlock_irqrestore (&usb_ed_lock, flags); - - } else { /* unlink URB, call complete */ - urb_rm_priv (urb); - urb->complete (urb); - } - break; - - case PIPE_BULK: - case PIPE_CONTROL: /* unlink URB, call complete */ - urb_rm_priv (urb); - urb->complete (urb); - break; - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* get a transfer request */ - -static int sohci_submit_urb (struct urb * urb, int mem_flags) -{ - ohci_t * ohci; - ed_t * ed; - urb_priv_t * urb_priv; - unsigned int pipe = urb->pipe; - int maxps = usb_maxpacket (urb->dev, pipe, usb_pipeout (pipe)); - int i, size = 0; - unsigned long flags; - int bustime = 0; - - if (!urb->dev || !urb->dev->bus) - return -ENODEV; - - if (urb->hcpriv) /* urb already in use */ - return -EINVAL; - -// if(usb_endpoint_halted (urb->dev, usb_pipeendpoint (pipe), usb_pipeout (pipe))) -// return -EPIPE; - - /* increment the reference count of the urb, as we now also control it */ - urb = usb_get_urb (urb); - - usb_get_dev (urb->dev); - ohci = (ohci_t *) urb->dev->bus->hcpriv; - -#ifdef DEBUG - urb_print (urb, "SUB", usb_pipein (pipe)); -#endif - - /* handle a request to the virtual root hub */ - if (usb_pipedevice (pipe) == ohci->rh.devnum) - return rh_submit_urb (urb); - - /* when controller's hung, permit only roothub cleanup attempts - * such as powering down ports */ - if (ohci->disabled) { - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -ESHUTDOWN; - } - - /* every endpoint has a ed, locate and fill it */ - if (!(ed = ep_add_ed (urb->dev, pipe, urb->interval, 1, mem_flags))) { - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -ENOMEM; - } - - /* for the private part of the URB we need the number of TDs (size) */ - switch (usb_pipetype (pipe)) { - case PIPE_BULK: /* one TD for every 4096 Byte */ - size = (urb->transfer_buffer_length - 1) / 4096 + 1; - - /* If the transfer size is multiple of the pipe mtu, - * we may need an extra TD to create a empty frame - * Jean II */ - if ((urb->transfer_flags & USB_ZERO_PACKET) && - usb_pipeout (pipe) && - (urb->transfer_buffer_length != 0) && - ((urb->transfer_buffer_length % maxps) == 0)) - size++; - break; - case PIPE_ISOCHRONOUS: /* number of packets from URB */ - size = urb->number_of_packets; - if (size <= 0) { - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -EINVAL; - } - for (i = 0; i < urb->number_of_packets; i++) { - urb->iso_frame_desc[i].actual_length = 0; - urb->iso_frame_desc[i].status = -EXDEV; - } - break; - case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */ - size = (urb->transfer_buffer_length == 0)? 2: - (urb->transfer_buffer_length - 1) / 4096 + 3; - break; - case PIPE_INTERRUPT: /* one TD */ - size = 1; - break; - } - - /* allocate the private part of the URB */ - urb_priv = kmalloc (sizeof (urb_priv_t) + size * sizeof (td_t *), mem_flags); - if (!urb_priv) { - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -ENOMEM; - } - memset (urb_priv, 0, sizeof (urb_priv_t) + size * sizeof (td_t *)); - - /* fill the private part of the URB */ - urb_priv->length = size; - urb_priv->ed = ed; - - /* allocate the TDs (updating hash chains) */ - spin_lock_irqsave (&usb_ed_lock, flags); - for (i = 0; i < size; i++) { - urb_priv->td[i] = td_alloc (ohci, SLAB_ATOMIC); - if (!urb_priv->td[i]) { - urb_priv->length = i; - urb_free_priv (ohci, urb_priv); - spin_unlock_irqrestore (&usb_ed_lock, flags); - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -ENOMEM; - } - } - - if (ed->state == ED_NEW || (ed->state & ED_DEL)) { - urb_free_priv (ohci, urb_priv); - spin_unlock_irqrestore (&usb_ed_lock, flags); - usb_put_dev (urb->dev); - usb_put_urb (urb); - return -EINVAL; - } - - /* allocate and claim bandwidth if needed; ISO - * needs start frame index if it was't provided. - */ - switch (usb_pipetype (pipe)) { - case PIPE_ISOCHRONOUS: - if (urb->transfer_flags & USB_ISO_ASAP) { - urb->start_frame = ((ed->state == ED_OPER) - ? (ed->last_iso + 1) - : (le16_to_cpu (ohci->hcca->frame_no) + 10)) & 0xffff; - } - /* FALLTHROUGH */ - case PIPE_INTERRUPT: - if (urb->bandwidth == 0) { - bustime = usb_check_bandwidth (urb->dev, urb); - } - if (bustime < 0) { - urb_free_priv (ohci, urb_priv); - spin_unlock_irqrestore (&usb_ed_lock, flags); - usb_put_dev (urb->dev); - usb_put_urb (urb); - return bustime; - } - usb_claim_bandwidth (urb->dev, urb, bustime, usb_pipeisoc (urb->pipe)); -#ifdef DO_TIMEOUTS - urb->timeout = 0; -#endif - } - - urb->actual_length = 0; - urb->hcpriv = urb_priv; - urb->status = -EINPROGRESS; - - /* link the ed into a chain if is not already */ - if (ed->state != ED_OPER) - ep_link (ohci, ed); - - /* fill the TDs and link it to the ed */ - td_submit_urb (urb); - -#ifdef DO_TIMEOUTS - /* maybe add to ordered list of timeouts */ - if (urb->timeout) { - struct list_head *entry; - - // FIXME: usb-uhci uses relative timeouts (like this), - // while uhci uses absolute ones (probably better). - // Pick one solution and change the affected drivers. - urb->timeout += jiffies; - - list_for_each (entry, &ohci->timeout_list) { - struct urb *next_urb; - - next_urb = list_entry (entry, struct urb, urb_list); - if (time_after_eq (urb->timeout, next_urb->timeout)) - break; - } - list_add (&urb->urb_list, entry); - - /* drive timeouts by SF (messy, but works) */ - writel (OHCI_INTR_SF, &ohci->regs->intrenable); - } -#endif - - spin_unlock_irqrestore (&usb_ed_lock, flags); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* deactivate all TDs and remove the private part of the URB */ -/* interrupt callers must use async unlink mode */ - -static int sohci_unlink_urb (struct urb * urb) -{ - unsigned long flags; - ohci_t * ohci; - - if (!urb) /* just to be sure */ - return -EINVAL; - - if (!urb->dev || !urb->dev->bus) - return -ENODEV; - - ohci = (ohci_t *) urb->dev->bus->hcpriv; - -#ifdef DEBUG - urb_print (urb, "UNLINK", 1); -#endif - - /* handle a request to the virtual root hub */ - if (usb_pipedevice (urb->pipe) == ohci->rh.devnum) - return rh_unlink_urb (urb); - - if (urb->hcpriv && (urb->status == -EINPROGRESS)) { - if (!ohci->disabled) { - urb_priv_t * urb_priv; - - /* interrupt code may not sleep; it must use - * async status return to unlink pending urbs. - */ - if (!(urb->transfer_flags & USB_ASYNC_UNLINK) - && in_interrupt ()) { - err ("bug in call from %p; use async!", - __builtin_return_address(0)); - return -EWOULDBLOCK; - } - - /* flag the urb and its TDs for deletion in some - * upcoming SF interrupt delete list processing - */ - spin_lock_irqsave (&usb_ed_lock, flags); - urb_priv = urb->hcpriv; - - if (!urb_priv || (urb_priv->state == URB_DEL)) { - spin_unlock_irqrestore (&usb_ed_lock, flags); - return 0; - } - - urb_priv->state = URB_DEL; - ep_rm_ed (urb->dev, urb_priv->ed); - urb_priv->ed->state |= ED_URB_DEL; - - if (!(urb->transfer_flags & USB_ASYNC_UNLINK)) { - DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup); - DECLARE_WAITQUEUE (wait, current); - int timeout = OHCI_UNLINK_TIMEOUT; - - add_wait_queue (&unlink_wakeup, &wait); - urb_priv->wait = &unlink_wakeup; - spin_unlock_irqrestore (&usb_ed_lock, flags); - - /* wait until all TDs are deleted */ - set_current_state(TASK_UNINTERRUPTIBLE); - while (timeout && (urb->status == -EINPROGRESS)) - timeout = schedule_timeout (timeout); - set_current_state(TASK_RUNNING); - remove_wait_queue (&unlink_wakeup, &wait); - if (urb->status == -EINPROGRESS) { - err ("unlink URB timeout"); - return -ETIMEDOUT; - } - } else { - /* usb_put_dev done in dl_del_list() */ - urb->status = -EINPROGRESS; - spin_unlock_irqrestore (&usb_ed_lock, flags); - return -EINPROGRESS; - } - } else { - urb_rm_priv (urb); - if (urb->transfer_flags & USB_ASYNC_UNLINK) { - urb->status = -ECONNRESET; - if (urb->complete) - urb->complete (urb); - } else - urb->status = -ENOENT; - } - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* allocate private data space for a usb device */ - -static int sohci_alloc_dev (struct usb_device *usb_dev) -{ - struct ohci_device * dev; - - dev = dev_alloc ((struct ohci *) usb_dev->bus->hcpriv, ALLOC_FLAGS); - if (!dev) - return -ENOMEM; - - usb_dev->hcpriv = dev; - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* may be called from interrupt context */ -/* frees private data space of usb device */ - -static int sohci_free_dev (struct usb_device * usb_dev) -{ - unsigned long flags; - int i, cnt = 0; - ed_t * ed; - struct ohci_device * dev = usb_to_ohci (usb_dev); - ohci_t * ohci = usb_dev->bus->hcpriv; - - if (!dev) - return 0; - - if (usb_dev->devnum >= 0) { - - /* driver disconnects should have unlinked all urbs - * (freeing all the TDs, unlinking EDs) but we need - * to defend against bugs that prevent that. - */ - spin_lock_irqsave (&usb_ed_lock, flags); - for(i = 0; i < NUM_EDS; i++) { - ed = &(dev->ed[i]); - if (ed->state != ED_NEW) { - if (ed->state == ED_OPER) { - /* driver on that interface didn't unlink an urb */ - dbg ("driver usb-%s dev %d ed 0x%x unfreed URB", - ohci->slot_name, usb_dev->devnum, i); - ep_unlink (ohci, ed); - } - ep_rm_ed (usb_dev, ed); - ed->state = ED_DEL; - cnt++; - } - } - spin_unlock_irqrestore (&usb_ed_lock, flags); - - /* if the controller is running, tds for those unlinked - * urbs get freed by dl_del_list at the next SF interrupt - */ - if (cnt > 0) { - - if (ohci->disabled) { - /* FIXME: Something like this should kick in, - * though it's currently an exotic case ... - * the controller won't ever be touching - * these lists again!! - dl_del_list (ohci, - le16_to_cpu (ohci->hcca->frame_no) & 1); - */ - warn ("TD leak, %d", cnt); - - } else if (!in_interrupt ()) { - DECLARE_WAIT_QUEUE_HEAD (freedev_wakeup); - DECLARE_WAITQUEUE (wait, current); - int timeout = OHCI_UNLINK_TIMEOUT; - - /* SF interrupt handler calls dl_del_list */ - add_wait_queue (&freedev_wakeup, &wait); - dev->wait = &freedev_wakeup; - set_current_state(TASK_UNINTERRUPTIBLE); - while (timeout && dev->ed_cnt) - timeout = schedule_timeout (timeout); - set_current_state(TASK_RUNNING); - remove_wait_queue (&freedev_wakeup, &wait); - if (dev->ed_cnt) { - err ("free device %d timeout", usb_dev->devnum); - return -ETIMEDOUT; - } - } else { - /* likely some interface's driver has a refcount bug */ - err ("bus %s devnum %d deletion in interrupt", - ohci->slot_name, usb_dev->devnum); - BUG (); - } - } - } - - /* free device, and associated EDs */ - dev_free (ohci, dev); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* tell us the current USB frame number */ - -static int sohci_get_current_frame_number (struct usb_device *usb_dev) -{ - ohci_t * ohci = usb_dev->bus->hcpriv; - - return le16_to_cpu (ohci->hcca->frame_no); -} - -/*-------------------------------------------------------------------------*/ - -struct usb_operations sohci_device_operations = { - allocate: sohci_alloc_dev, - deallocate: sohci_free_dev, - get_frame_number: sohci_get_current_frame_number, - submit_urb: sohci_submit_urb, - unlink_urb: sohci_unlink_urb, -}; - -/*-------------------------------------------------------------------------* - * ED handling functions - *-------------------------------------------------------------------------*/ - -/* search for the right branch to insert an interrupt ed into the int tree - * do some load ballancing; - * returns the branch and - * sets the interval to interval = 2^integer (ld (interval)) */ - -static int ep_int_ballance (ohci_t * ohci, int interval, int load) -{ - int i, branch = 0; - - /* search for the least loaded interrupt endpoint branch of all 32 branches */ - for (i = 0; i < 32; i++) - if (ohci->ohci_int_load [branch] > ohci->ohci_int_load [i]) branch = i; - - branch = branch % interval; - for (i = branch; i < 32; i += interval) ohci->ohci_int_load [i] += load; - - return branch; -} - -/*-------------------------------------------------------------------------*/ - -/* 2^int( ld (inter)) */ - -static int ep_2_n_interval (int inter) -{ - int i; - for (i = 0; ((inter >> i) > 1 ) && (i < 5); i++); - return 1 << i; -} - -/*-------------------------------------------------------------------------*/ - -/* the int tree is a binary tree - * in order to process it sequentially the indexes of the branches have to be mapped - * the mapping reverses the bits of a word of num_bits length */ - -static int ep_rev (int num_bits, int word) -{ - int i, wout = 0; - - for (i = 0; i < num_bits; i++) wout |= (((word >> i) & 1) << (num_bits - i - 1)); - return wout; -} - -/*-------------------------------------------------------------------------*/ - -/* link an ed into one of the HC chains */ - -static int ep_link (ohci_t * ohci, ed_t * edi) -{ - int int_branch; - int i; - int inter; - int interval; - int load; - __u32 * ed_p; - volatile ed_t * ed = edi; - - ed->state = ED_OPER; - - switch (ed->type) { - case PIPE_CONTROL: - ed->hwNextED = 0; - if (ohci->ed_controltail == NULL) { - writel (ed->dma, &ohci->regs->ed_controlhead); - } else { - ohci->ed_controltail->hwNextED = cpu_to_le32 (ed->dma); - } - ed->ed_prev = ohci->ed_controltail; - if (!ohci->ed_controltail && !ohci->ed_rm_list[0] && - !ohci->ed_rm_list[1] && !ohci->sleeping) { - ohci->hc_control |= OHCI_CTRL_CLE; - writel (ohci->hc_control, &ohci->regs->control); - } - ohci->ed_controltail = edi; - break; - - case PIPE_BULK: - ed->hwNextED = 0; - if (ohci->ed_bulktail == NULL) { - writel (ed->dma, &ohci->regs->ed_bulkhead); - } else { - ohci->ed_bulktail->hwNextED = cpu_to_le32 (ed->dma); - } - ed->ed_prev = ohci->ed_bulktail; - if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] && - !ohci->ed_rm_list[1] && !ohci->sleeping) { - ohci->hc_control |= OHCI_CTRL_BLE; - writel (ohci->hc_control, &ohci->regs->control); - } - ohci->ed_bulktail = edi; - break; - - case PIPE_INTERRUPT: - load = ed->int_load; - interval = ep_2_n_interval (ed->int_period); - ed->int_interval = interval; - int_branch = ep_int_ballance (ohci, interval, load); - ed->int_branch = int_branch; - - for (i = 0; i < ep_rev (6, interval); i += inter) { - inter = 1; - for (ed_p = &(ohci->hcca->int_table[ep_rev (5, i) + int_branch]); - (*ed_p != 0) && ((dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval >= interval); - ed_p = &((dma_to_ed (ohci, le32_to_cpup (ed_p)))->hwNextED)) - inter = ep_rev (6, (dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval); - ed->hwNextED = *ed_p; - *ed_p = cpu_to_le32 (ed->dma); - } -#ifdef DEBUG - ep_print_int_eds (ohci, "LINK_INT"); -#endif - break; - - case PIPE_ISOCHRONOUS: - ed->hwNextED = 0; - ed->int_interval = 1; - if (ohci->ed_isotail != NULL) { - ohci->ed_isotail->hwNextED = cpu_to_le32 (ed->dma); - ed->ed_prev = ohci->ed_isotail; - } else { - for ( i = 0; i < 32; i += inter) { - inter = 1; - for (ed_p = &(ohci->hcca->int_table[ep_rev (5, i)]); - *ed_p != 0; - ed_p = &((dma_to_ed (ohci, le32_to_cpup (ed_p)))->hwNextED)) - inter = ep_rev (6, (dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval); - *ed_p = cpu_to_le32 (ed->dma); - } - ed->ed_prev = NULL; - } - ohci->ed_isotail = edi; -#ifdef DEBUG - ep_print_int_eds (ohci, "LINK_ISO"); -#endif - break; - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* scan the periodic table to find and unlink this ED */ -static void periodic_unlink ( - struct ohci *ohci, - struct ed *ed, - unsigned index, - unsigned period -) { - for (; index < NUM_INTS; index += period) { - __u32 *ed_p = &ohci->hcca->int_table [index]; - - /* ED might have been unlinked through another path */ - while (*ed_p != 0) { - if ((dma_to_ed (ohci, le32_to_cpup (ed_p))) == ed) { - *ed_p = ed->hwNextED; - break; - } - ed_p = & ((dma_to_ed (ohci, - le32_to_cpup (ed_p)))->hwNextED); - } - } -} - -/* unlink an ed from one of the HC chains. - * just the link to the ed is unlinked. - * the link from the ed still points to another operational ed or 0 - * so the HC can eventually finish the processing of the unlinked ed */ - -static int ep_unlink (ohci_t * ohci, ed_t * ed) -{ - int i; - - ed->hwINFO |= cpu_to_le32 (OHCI_ED_SKIP); - - switch (ed->type) { - case PIPE_CONTROL: - if (ed->ed_prev == NULL) { - if (!ed->hwNextED) { - ohci->hc_control &= ~OHCI_CTRL_CLE; - writel (ohci->hc_control, &ohci->regs->control); - } - writel (le32_to_cpup (&ed->hwNextED), &ohci->regs->ed_controlhead); - } else { - ed->ed_prev->hwNextED = ed->hwNextED; - } - if (ohci->ed_controltail == ed) { - ohci->ed_controltail = ed->ed_prev; - } else { - (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED)))->ed_prev = ed->ed_prev; - } - break; - - case PIPE_BULK: - if (ed->ed_prev == NULL) { - if (!ed->hwNextED) { - ohci->hc_control &= ~OHCI_CTRL_BLE; - writel (ohci->hc_control, &ohci->regs->control); - } - writel (le32_to_cpup (&ed->hwNextED), &ohci->regs->ed_bulkhead); - } else { - ed->ed_prev->hwNextED = ed->hwNextED; - } - if (ohci->ed_bulktail == ed) { - ohci->ed_bulktail = ed->ed_prev; - } else { - (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED)))->ed_prev = ed->ed_prev; - } - break; - - case PIPE_INTERRUPT: - periodic_unlink (ohci, ed, 0, 1); - for (i = ed->int_branch; i < 32; i += ed->int_interval) - ohci->ohci_int_load[i] -= ed->int_load; -#ifdef DEBUG - ep_print_int_eds (ohci, "UNLINK_INT"); -#endif - break; - - case PIPE_ISOCHRONOUS: - if (ohci->ed_isotail == ed) - ohci->ed_isotail = ed->ed_prev; - if (ed->hwNextED != 0) - (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED))) - ->ed_prev = ed->ed_prev; - - if (ed->ed_prev != NULL) - ed->ed_prev->hwNextED = ed->hwNextED; - else - periodic_unlink (ohci, ed, 0, 1); -#ifdef DEBUG - ep_print_int_eds (ohci, "UNLINK_ISO"); -#endif - break; - } - ed->state = ED_UNLINK; - return 0; -} - - -/*-------------------------------------------------------------------------*/ - -/* add/reinit an endpoint; this should be done once at the usb_set_configuration command, - * but the USB stack is a little bit stateless so we do it at every transaction - * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK - * in all other cases the state is left unchanged - * the ed info fields are setted anyway even though most of them should not change */ - -static ed_t * ep_add_ed ( - struct usb_device * usb_dev, - unsigned int pipe, - int interval, - int load, - int mem_flags -) -{ - ohci_t * ohci = usb_dev->bus->hcpriv; - td_t * td; - ed_t * ed_ret; - volatile ed_t * ed; - unsigned long flags; - - - spin_lock_irqsave (&usb_ed_lock, flags); - - ed = ed_ret = &(usb_to_ohci (usb_dev)->ed[(usb_pipeendpoint (pipe) << 1) | - (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))]); - - if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) { - /* pending delete request */ - spin_unlock_irqrestore (&usb_ed_lock, flags); - return NULL; - } - - if (ed->state == ED_NEW) { - ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP); /* skip ed */ - /* dummy td; end of td list for ed */ - td = td_alloc (ohci, SLAB_ATOMIC); - /* hash the ed for later reverse mapping */ - if (!td || !hash_add_ed (ohci, (ed_t *)ed)) { - /* out of memory */ - if (td) - td_free(ohci, td); - spin_unlock_irqrestore (&usb_ed_lock, flags); - return NULL; - } - ed->hwTailP = cpu_to_le32 (td->td_dma); - ed->hwHeadP = ed->hwTailP; - ed->state = ED_UNLINK; - ed->type = usb_pipetype (pipe); - usb_to_ohci (usb_dev)->ed_cnt++; - } - - ohci->dev[usb_pipedevice (pipe)] = usb_dev; - - ed->hwINFO = cpu_to_le32 (usb_pipedevice (pipe) - | usb_pipeendpoint (pipe) << 7 - | (usb_pipeisoc (pipe)? 0x8000: 0) - | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000)) - | (usb_dev->speed == USB_SPEED_LOW) << 13 - | usb_maxpacket (usb_dev, pipe, usb_pipeout (pipe)) << 16); - - if (ed->type == PIPE_INTERRUPT && ed->state == ED_UNLINK) { - ed->int_period = interval; - ed->int_load = load; - } - - spin_unlock_irqrestore (&usb_ed_lock, flags); - return ed_ret; -} - -/*-------------------------------------------------------------------------*/ - -/* request the removal of an endpoint - * put the ep on the rm_list and request a stop of the bulk or ctrl list - * real removal is done at the next start frame (SF) hardware interrupt */ - -static void ep_rm_ed (struct usb_device * usb_dev, ed_t * ed) -{ - unsigned int frame; - ohci_t * ohci = usb_dev->bus->hcpriv; - - if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) - return; - - ed->hwINFO |= cpu_to_le32 (OHCI_ED_SKIP); - - if (!ohci->disabled) { - switch (ed->type) { - case PIPE_CONTROL: /* stop control list */ - ohci->hc_control &= ~OHCI_CTRL_CLE; - writel (ohci->hc_control, &ohci->regs->control); - break; - case PIPE_BULK: /* stop bulk list */ - ohci->hc_control &= ~OHCI_CTRL_BLE; - writel (ohci->hc_control, &ohci->regs->control); - break; - } - } - - frame = le16_to_cpu (ohci->hcca->frame_no) & 0x1; - ed->ed_rm_list = ohci->ed_rm_list[frame]; - ohci->ed_rm_list[frame] = ed; - - if (!ohci->disabled && !ohci->sleeping) { - /* enable SOF interrupt */ - writel (OHCI_INTR_SF, &ohci->regs->intrstatus); - writel (OHCI_INTR_SF, &ohci->regs->intrenable); - } -} - -/*-------------------------------------------------------------------------* - * TD handling functions - *-------------------------------------------------------------------------*/ - -/* enqueue next TD for this URB (OHCI spec 5.2.8.2) */ - -static void -td_fill (ohci_t * ohci, unsigned int info, - dma_addr_t data, int len, - struct urb * urb, int index) -{ - volatile td_t * td, * td_pt; - urb_priv_t * urb_priv = urb->hcpriv; - - if (index >= urb_priv->length) { - err("internal OHCI error: TD index > length"); - return; - } - - /* use this td as the next dummy */ - td_pt = urb_priv->td [index]; - td_pt->hwNextTD = 0; - - /* fill the old dummy TD */ - td = urb_priv->td [index] = dma_to_td (ohci, - le32_to_cpup (&urb_priv->ed->hwTailP) & ~0xf); - - td->ed = urb_priv->ed; - td->next_dl_td = NULL; - td->index = index; - td->urb = urb; - td->data_dma = data; - if (!len) - data = 0; - - td->hwINFO = cpu_to_le32 (info); - if ((td->ed->type) == PIPE_ISOCHRONOUS) { - td->hwCBP = cpu_to_le32 (data & 0xFFFFF000); - td->ed->last_iso = info & 0xffff; - } else { - td->hwCBP = cpu_to_le32 (data); - } - if (data) - td->hwBE = cpu_to_le32 (data + len - 1); - else - td->hwBE = 0; - td->hwNextTD = cpu_to_le32 (td_pt->td_dma); - td->hwPSW [0] = cpu_to_le16 ((data & 0x0FFF) | 0xE000); - - /* append to queue */ - td->ed->hwTailP = td->hwNextTD; -} - -/*-------------------------------------------------------------------------*/ - -/* prepare all TDs of a transfer */ - -static void td_submit_urb (struct urb * urb) -{ - urb_priv_t * urb_priv = urb->hcpriv; - ohci_t * ohci = (ohci_t *) urb->dev->bus->hcpriv; - dma_addr_t data; - int data_len = urb->transfer_buffer_length; - int maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe)); - int cnt = 0; - __u32 info = 0; - unsigned int toggle = 0; - - /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */ - if(usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe))) { - toggle = TD_T_TOGGLE; - } else { - toggle = TD_T_DATA0; - usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 1); - } - - urb_priv->td_cnt = 0; - - if (data_len) { - data = pci_map_single (ohci->ohci_dev, - urb->transfer_buffer, data_len, - usb_pipeout (urb->pipe) - ? PCI_DMA_TODEVICE - : PCI_DMA_FROMDEVICE - ); - } else - data = 0; - - switch (usb_pipetype (urb->pipe)) { - case PIPE_BULK: - info = usb_pipeout (urb->pipe)? - TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ; - while(data_len > 4096) { - td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, urb, cnt); - data += 4096; data_len -= 4096; cnt++; - } - info = usb_pipeout (urb->pipe)? - TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ; - td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, urb, cnt); - cnt++; - - /* If the transfer size is multiple of the pipe mtu, - * we may need an extra TD to create a empty frame - * Note : another way to check this condition is - * to test if(urb_priv->length > cnt) - Jean II */ - if ((urb->transfer_flags & USB_ZERO_PACKET) && - usb_pipeout (urb->pipe) && - (urb->transfer_buffer_length != 0) && - ((urb->transfer_buffer_length % maxps) == 0)) { - td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), 0, 0, urb, cnt); - cnt++; - } - - if (!ohci->sleeping) - writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */ - break; - - case PIPE_INTERRUPT: - info = usb_pipeout (urb->pipe)? - TD_CC | TD_DP_OUT | toggle: TD_CC | TD_R | TD_DP_IN | toggle; - td_fill (ohci, info, data, data_len, urb, cnt++); - break; - - case PIPE_CONTROL: - info = TD_CC | TD_DP_SETUP | TD_T_DATA0; - td_fill (ohci, info, - pci_map_single (ohci->ohci_dev, - urb->setup_packet, 8, - PCI_DMA_TODEVICE), - 8, urb, cnt++); - if (data_len > 0) { - info = usb_pipeout (urb->pipe)? - TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1; - /* NOTE: mishandles transfers >8K, some >4K */ - td_fill (ohci, info, data, data_len, urb, cnt++); - } - info = usb_pipeout (urb->pipe)? - TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1; - td_fill (ohci, info, data, 0, urb, cnt++); - if (!ohci->sleeping) - writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */ - break; - - case PIPE_ISOCHRONOUS: - for (cnt = 0; cnt < urb->number_of_packets; cnt++) { - td_fill (ohci, TD_CC|TD_ISO | ((urb->start_frame + cnt) & 0xffff), - data + urb->iso_frame_desc[cnt].offset, - urb->iso_frame_desc[cnt].length, urb, cnt); - } - break; - } - if (urb_priv->length != cnt) - dbg("TD LENGTH %d != CNT %d", urb_priv->length, cnt); -} - -/*-------------------------------------------------------------------------* - * Done List handling functions - *-------------------------------------------------------------------------*/ - - -/* calculate the transfer length and update the urb */ - -static void dl_transfer_length(td_t * td) -{ - __u32 tdINFO, tdBE, tdCBP; - __u16 tdPSW; - struct urb * urb = td->urb; - urb_priv_t * urb_priv = urb->hcpriv; - int dlen = 0; - int cc = 0; - - tdINFO = le32_to_cpup (&td->hwINFO); - tdBE = le32_to_cpup (&td->hwBE); - tdCBP = le32_to_cpup (&td->hwCBP); - - - if (tdINFO & TD_ISO) { - tdPSW = le16_to_cpu (td->hwPSW[0]); - cc = (tdPSW >> 12) & 0xF; - if (cc < 0xE) { - if (usb_pipeout(urb->pipe)) { - dlen = urb->iso_frame_desc[td->index].length; - } else { - dlen = tdPSW & 0x3ff; - } - urb->actual_length += dlen; - urb->iso_frame_desc[td->index].actual_length = dlen; - if (!(urb->transfer_flags & USB_DISABLE_SPD) && (cc == TD_DATAUNDERRUN)) - cc = TD_CC_NOERROR; - - urb->iso_frame_desc[td->index].status = cc_to_error[cc]; - } - } else { /* BULK, INT, CONTROL DATA */ - if (!(usb_pipetype (urb->pipe) == PIPE_CONTROL && - ((td->index == 0) || (td->index == urb_priv->length - 1)))) { - if (tdBE != 0) { - if (td->hwCBP == 0) - urb->actual_length += tdBE - td->data_dma + 1; - else - urb->actual_length += tdCBP - td->data_dma; - } - } - } -} - -/* handle an urb that is being unlinked */ - -static void dl_del_urb (struct urb * urb) -{ - wait_queue_head_t * wait_head = ((urb_priv_t *)(urb->hcpriv))->wait; - - urb_rm_priv_locked (urb); - - if (urb->transfer_flags & USB_ASYNC_UNLINK) { - urb->status = -ECONNRESET; - if (urb->complete) - urb->complete (urb); - } else { - urb->status = -ENOENT; - - /* unblock sohci_unlink_urb */ - if (wait_head) - wake_up (wait_head); - } -} - -/*-------------------------------------------------------------------------*/ - -/* replies to the request have to be on a FIFO basis so - * we reverse the reversed done-list */ - -td_t * dl_reverse_done_list (ohci_t * ohci) -{ - __u32 td_list_hc; - td_t * td_rev = NULL; - td_t * td_list = NULL; - urb_priv_t * urb_priv = NULL; - unsigned long flags; - - spin_lock_irqsave (&usb_ed_lock, flags); - - td_list_hc = le32_to_cpup (&ohci->hcca->done_head) & 0xfffffff0; - ohci->hcca->done_head = 0; - - while (td_list_hc) { - td_list = dma_to_td (ohci, td_list_hc); - - if (TD_CC_GET (le32_to_cpup (&td_list->hwINFO))) { - urb_priv = (urb_priv_t *) td_list->urb->hcpriv; - dbg(" USB-error/status: %x : %p", - TD_CC_GET (le32_to_cpup (&td_list->hwINFO)), td_list); - if (td_list->ed->hwHeadP & cpu_to_le32 (0x1)) { - if (urb_priv && ((td_list->index + 1) < urb_priv->length)) { - td_list->ed->hwHeadP = - (urb_priv->td[urb_priv->length - 1]->hwNextTD & cpu_to_le32 (0xfffffff0)) | - (td_list->ed->hwHeadP & cpu_to_le32 (0x2)); - urb_priv->td_cnt += urb_priv->length - td_list->index - 1; - } else - td_list->ed->hwHeadP &= cpu_to_le32 (0xfffffff2); - } - } - - td_list->next_dl_td = td_rev; - td_rev = td_list; - td_list_hc = le32_to_cpup (&td_list->hwNextTD) & 0xfffffff0; - } - spin_unlock_irqrestore (&usb_ed_lock, flags); - return td_list; -} - -/*-------------------------------------------------------------------------*/ - -/* there are some pending requests to remove - * - some of the eds (if ed->state & ED_DEL (set by sohci_free_dev) - * - some URBs/TDs if urb_priv->state == URB_DEL */ - -static void dl_del_list (ohci_t * ohci, unsigned int frame) -{ - unsigned long flags; - ed_t * ed; - __u32 edINFO; - __u32 tdINFO; - td_t * td = NULL, * td_next = NULL, * tdHeadP = NULL, * tdTailP; - __u32 * td_p; - int ctrl = 0, bulk = 0; - - spin_lock_irqsave (&usb_ed_lock, flags); - - for (ed = ohci->ed_rm_list[frame]; ed != NULL; ed = ed->ed_rm_list) { - - tdTailP = dma_to_td (ohci, le32_to_cpup (&ed->hwTailP) & 0xfffffff0); - tdHeadP = dma_to_td (ohci, le32_to_cpup (&ed->hwHeadP) & 0xfffffff0); - edINFO = le32_to_cpup (&ed->hwINFO); - td_p = &ed->hwHeadP; - - for (td = tdHeadP; td != tdTailP; td = td_next) { - struct urb * urb = td->urb; - urb_priv_t * urb_priv = td->urb->hcpriv; - - td_next = dma_to_td (ohci, le32_to_cpup (&td->hwNextTD) & 0xfffffff0); - if ((urb_priv->state == URB_DEL) || (ed->state & ED_DEL)) { - tdINFO = le32_to_cpup (&td->hwINFO); - if (TD_CC_GET (tdINFO) < 0xE) - dl_transfer_length (td); - *td_p = td->hwNextTD | (*td_p & cpu_to_le32 (0x3)); - - /* URB is done; clean up */ - if (++(urb_priv->td_cnt) == urb_priv->length) - dl_del_urb (urb); - } else { - td_p = &td->hwNextTD; - } - } - - if (ed->state & ED_DEL) { /* set by sohci_free_dev */ - struct ohci_device * dev = usb_to_ohci (ohci->dev[edINFO & 0x7F]); - td_free (ohci, tdTailP); /* free dummy td */ - ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP); - ed->state = ED_NEW; - hash_free_ed(ohci, ed); - /* if all eds are removed wake up sohci_free_dev */ - if (!--dev->ed_cnt) { - wait_queue_head_t *wait_head = dev->wait; - - dev->wait = 0; - if (wait_head) - wake_up (wait_head); - } - } else { - ed->state &= ~ED_URB_DEL; - tdHeadP = dma_to_td (ohci, le32_to_cpup (&ed->hwHeadP) & 0xfffffff0); - - if (tdHeadP == tdTailP) { - if (ed->state == ED_OPER) - ep_unlink(ohci, ed); - td_free (ohci, tdTailP); - ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP); - ed->state = ED_NEW; - hash_free_ed(ohci, ed); - --(usb_to_ohci (ohci->dev[edINFO & 0x7F]))->ed_cnt; - } else - ed->hwINFO &= ~cpu_to_le32 (OHCI_ED_SKIP); - } - - switch (ed->type) { - case PIPE_CONTROL: - ctrl = 1; - break; - case PIPE_BULK: - bulk = 1; - break; - } - } - - /* maybe reenable control and bulk lists */ - if (!ohci->disabled) { - if (ctrl) /* reset control list */ - writel (0, &ohci->regs->ed_controlcurrent); - if (bulk) /* reset bulk list */ - writel (0, &ohci->regs->ed_bulkcurrent); - if (!ohci->ed_rm_list[!frame] && !ohci->sleeping) { - if (ohci->ed_controltail) - ohci->hc_control |= OHCI_CTRL_CLE; - if (ohci->ed_bulktail) - ohci->hc_control |= OHCI_CTRL_BLE; - writel (ohci->hc_control, &ohci->regs->control); - } - } - - ohci->ed_rm_list[frame] = NULL; - spin_unlock_irqrestore (&usb_ed_lock, flags); -} - - - -/*-------------------------------------------------------------------------*/ - -/* td done list */ - -void dl_done_list (ohci_t * ohci, td_t * td_list) -{ - td_t * td_list_next = NULL; - ed_t * ed; - int cc = 0; - struct urb * urb; - urb_priv_t * urb_priv; - __u32 tdINFO, edHeadP, edTailP; - - unsigned long flags; - - while (td_list) { - td_list_next = td_list->next_dl_td; - - urb = td_list->urb; - urb_priv = urb->hcpriv; - tdINFO = le32_to_cpup (&td_list->hwINFO); - - ed = td_list->ed; - - dl_transfer_length(td_list); - - /* error code of transfer */ - cc = TD_CC_GET (tdINFO); - if (cc == TD_CC_STALL) - usb_endpoint_halt(urb->dev, - usb_pipeendpoint(urb->pipe), - usb_pipeout(urb->pipe)); - - if (!(urb->transfer_flags & USB_DISABLE_SPD) - && (cc == TD_DATAUNDERRUN)) - cc = TD_CC_NOERROR; - - if (++(urb_priv->td_cnt) == urb_priv->length) { - if ((ed->state & (ED_OPER | ED_UNLINK)) - && (urb_priv->state != URB_DEL)) { - urb->status = cc_to_error[cc]; - sohci_return_urb (ohci, urb); - } else { - spin_lock_irqsave (&usb_ed_lock, flags); - dl_del_urb (urb); - spin_unlock_irqrestore (&usb_ed_lock, flags); - } - } - - spin_lock_irqsave (&usb_ed_lock, flags); - if (ed->state != ED_NEW) { - edHeadP = le32_to_cpup (&ed->hwHeadP) & 0xfffffff0; - edTailP = le32_to_cpup (&ed->hwTailP); - - /* unlink eds if they are not busy */ - if ((edHeadP == edTailP) && (ed->state == ED_OPER)) - ep_unlink (ohci, ed); - } - spin_unlock_irqrestore (&usb_ed_lock, flags); - - td_list = td_list_next; - } -} - - - - -/*-------------------------------------------------------------------------* - * Virtual Root Hub - *-------------------------------------------------------------------------*/ - -/* Device descriptor */ -static __u8 root_hub_dev_des[] = -{ - 0x12, /* __u8 bLength; */ - 0x01, /* __u8 bDescriptorType; Device */ - 0x10, /* __u16 bcdUSB; v1.1 */ - 0x01, - 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ - 0x00, /* __u8 bDeviceSubClass; */ - 0x00, /* __u8 bDeviceProtocol; */ - 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */ - 0x00, /* __u16 idVendor; */ - 0x00, - 0x00, /* __u16 idProduct; */ - 0x00, - 0x00, /* __u16 bcdDevice; */ - 0x00, - 0x00, /* __u8 iManufacturer; */ - 0x02, /* __u8 iProduct; */ - 0x01, /* __u8 iSerialNumber; */ - 0x01 /* __u8 bNumConfigurations; */ -}; - - -/* Configuration descriptor */ -static __u8 root_hub_config_des[] = -{ - 0x09, /* __u8 bLength; */ - 0x02, /* __u8 bDescriptorType; Configuration */ - 0x19, /* __u16 wTotalLength; */ - 0x00, - 0x01, /* __u8 bNumInterfaces; */ - 0x01, /* __u8 bConfigurationValue; */ - 0x00, /* __u8 iConfiguration; */ - 0x40, /* __u8 bmAttributes; - Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */ - 0x00, /* __u8 MaxPower; */ - - /* interface */ - 0x09, /* __u8 if_bLength; */ - 0x04, /* __u8 if_bDescriptorType; Interface */ - 0x00, /* __u8 if_bInterfaceNumber; */ - 0x00, /* __u8 if_bAlternateSetting; */ - 0x01, /* __u8 if_bNumEndpoints; */ - 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */ - 0x00, /* __u8 if_bInterfaceSubClass; */ - 0x00, /* __u8 if_bInterfaceProtocol; */ - 0x00, /* __u8 if_iInterface; */ - - /* endpoint */ - 0x07, /* __u8 ep_bLength; */ - 0x05, /* __u8 ep_bDescriptorType; Endpoint */ - 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */ - 0x03, /* __u8 ep_bmAttributes; Interrupt */ - 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */ - 0x00, - 0xff /* __u8 ep_bInterval; 255 ms */ -}; - -/* Hub class-specific descriptor is constructed dynamically */ - - -/*-------------------------------------------------------------------------*/ - -/* prepare Interrupt pipe data; HUB INTERRUPT ENDPOINT */ - -static int rh_send_irq (ohci_t * ohci, void * rh_data, int rh_len) -{ - int num_ports; - int i; - int ret; - int len; - - __u8 data[8]; - - num_ports = roothub_a (ohci) & RH_A_NDP; - if (num_ports > MAX_ROOT_PORTS) { - err ("bogus NDP=%d for OHCI usb-%s", num_ports, - ohci->slot_name); - err ("rereads as NDP=%d", - readl (&ohci->regs->roothub.a) & RH_A_NDP); - /* retry later; "should not happen" */ - return 0; - } - *(__u8 *) data = (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC)) - ? 1: 0; - ret = *(__u8 *) data; - - for ( i = 0; i < num_ports; i++) { - *(__u8 *) (data + (i + 1) / 8) |= - ((roothub_portstatus (ohci, i) & - (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC | RH_PS_PRSC)) - ? 1: 0) << ((i + 1) % 8); - ret += *(__u8 *) (data + (i + 1) / 8); - } - len = i/8 + 1; - - if (ret > 0) { - memcpy(rh_data, data, - min_t(unsigned int, len, - min_t(unsigned int, rh_len, sizeof(data)))); - return len; - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* Virtual Root Hub INTs are polled by this timer every "interval" ms */ - -static void rh_int_timer_do (unsigned long ptr) -{ - int len; - - struct urb * urb = (struct urb *) ptr; - ohci_t * ohci = urb->dev->bus->hcpriv; - - if (ohci->disabled) - return; - - /* ignore timers firing during PM suspend, etc */ - if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER) - goto out; - - if(ohci->rh.send) { - len = rh_send_irq (ohci, urb->transfer_buffer, urb->transfer_buffer_length); - if (len > 0) { - urb->actual_length = len; -#ifdef DEBUG - urb_print (urb, "RET-t(rh)", usb_pipeout (urb->pipe)); -#endif - if (urb->complete) - urb->complete (urb); - } - } - out: - rh_init_int_timer (urb); -} - -/*-------------------------------------------------------------------------*/ - -/* Root Hub INTs are polled by this timer */ - -static int rh_init_int_timer (struct urb * urb) -{ - ohci_t * ohci = urb->dev->bus->hcpriv; - - ohci->rh.interval = urb->interval; - init_timer (&ohci->rh.rh_int_timer); - ohci->rh.rh_int_timer.function = rh_int_timer_do; - ohci->rh.rh_int_timer.data = (unsigned long) urb; - ohci->rh.rh_int_timer.expires = - jiffies + (HZ * (urb->interval < 30? 30: urb->interval)) / 1000; - add_timer (&ohci->rh.rh_int_timer); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#define OK(x) len = (x); break -#define WR_RH_STAT(x) writel((x), &ohci->regs->roothub.status) -#define WR_RH_PORTSTAT(x) writel((x), &ohci->regs->roothub.portstatus[wIndex-1]) -#define RD_RH_STAT roothub_status(ohci) -#define RD_RH_PORTSTAT roothub_portstatus(ohci,wIndex-1) - -/* request to virtual root hub */ - -static int rh_submit_urb (struct urb * urb) -{ - struct usb_device * usb_dev = urb->dev; - ohci_t * ohci = usb_dev->bus->hcpriv; - unsigned int pipe = urb->pipe; - struct usb_ctrlrequest * cmd = (struct usb_ctrlrequest *) urb->setup_packet; - void * data = urb->transfer_buffer; - int leni = urb->transfer_buffer_length; - int len = 0; - int status = TD_CC_NOERROR; - - __u32 datab[4]; - __u8 * data_buf = (__u8 *) datab; - - __u16 bmRType_bReq; - __u16 wValue; - __u16 wIndex; - __u16 wLength; - - if (usb_pipeint(pipe)) { - ohci->rh.urb = urb; - ohci->rh.send = 1; - ohci->rh.interval = urb->interval; - rh_init_int_timer(urb); - urb->status = cc_to_error [TD_CC_NOERROR]; - - return 0; - } - - bmRType_bReq = cmd->bRequestType | (cmd->bRequest << 8); - wValue = le16_to_cpu (cmd->wValue); - wIndex = le16_to_cpu (cmd->wIndex); - wLength = le16_to_cpu (cmd->wLength); - - switch (bmRType_bReq) { - /* Request Destination: - without flags: Device, - RH_INTERFACE: interface, - RH_ENDPOINT: endpoint, - RH_CLASS means HUB here, - RH_OTHER | RH_CLASS almost ever means HUB_PORT here - */ - - case RH_GET_STATUS: - *(__u16 *) data_buf = cpu_to_le16 (1); OK (2); - case RH_GET_STATUS | RH_INTERFACE: - *(__u16 *) data_buf = cpu_to_le16 (0); OK (2); - case RH_GET_STATUS | RH_ENDPOINT: - *(__u16 *) data_buf = cpu_to_le16 (0); OK (2); - case RH_GET_STATUS | RH_CLASS: - *(__u32 *) data_buf = cpu_to_le32 ( - RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE)); - OK (4); - case RH_GET_STATUS | RH_OTHER | RH_CLASS: - *(__u32 *) data_buf = cpu_to_le32 (RD_RH_PORTSTAT); OK (4); - - case RH_CLEAR_FEATURE | RH_ENDPOINT: - switch (wValue) { - case (RH_ENDPOINT_STALL): OK (0); - } - break; - - case RH_CLEAR_FEATURE | RH_CLASS: - switch (wValue) { - case RH_C_HUB_LOCAL_POWER: - OK(0); - case (RH_C_HUB_OVER_CURRENT): - WR_RH_STAT(RH_HS_OCIC); OK (0); - } - break; - - case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS: - switch (wValue) { - case (RH_PORT_ENABLE): - WR_RH_PORTSTAT (RH_PS_CCS ); OK (0); - case (RH_PORT_SUSPEND): - WR_RH_PORTSTAT (RH_PS_POCI); OK (0); - case (RH_PORT_POWER): - WR_RH_PORTSTAT (RH_PS_LSDA); OK (0); - case (RH_C_PORT_CONNECTION): - WR_RH_PORTSTAT (RH_PS_CSC ); OK (0); - case (RH_C_PORT_ENABLE): - WR_RH_PORTSTAT (RH_PS_PESC); OK (0); - case (RH_C_PORT_SUSPEND): - WR_RH_PORTSTAT (RH_PS_PSSC); OK (0); - case (RH_C_PORT_OVER_CURRENT): - WR_RH_PORTSTAT (RH_PS_OCIC); OK (0); - case (RH_C_PORT_RESET): - WR_RH_PORTSTAT (RH_PS_PRSC); OK (0); - } - break; - - case RH_SET_FEATURE | RH_OTHER | RH_CLASS: - switch (wValue) { - case (RH_PORT_SUSPEND): - WR_RH_PORTSTAT (RH_PS_PSS ); OK (0); - case (RH_PORT_RESET): /* BUG IN HUP CODE *********/ - if (RD_RH_PORTSTAT & RH_PS_CCS) - WR_RH_PORTSTAT (RH_PS_PRS); - OK (0); - case (RH_PORT_POWER): - WR_RH_PORTSTAT (RH_PS_PPS ); OK (0); - case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/ - if (RD_RH_PORTSTAT & RH_PS_CCS) - WR_RH_PORTSTAT (RH_PS_PES ); - OK (0); - } - break; - - case RH_SET_ADDRESS: ohci->rh.devnum = wValue; OK(0); - - case RH_GET_DESCRIPTOR: - switch ((wValue & 0xff00) >> 8) { - case (0x01): /* device descriptor */ - len = min_t(unsigned int, - leni, - min_t(unsigned int, - sizeof (root_hub_dev_des), - wLength)); - data_buf = root_hub_dev_des; OK(len); - case (0x02): /* configuration descriptor */ - len = min_t(unsigned int, - leni, - min_t(unsigned int, - sizeof (root_hub_config_des), - wLength)); - data_buf = root_hub_config_des; OK(len); - case (0x03): /* string descriptors */ - len = usb_root_hub_string (wValue & 0xff, - (int)(long) ohci->regs, "OHCI", - data, wLength); - if (len > 0) { - data_buf = data; - OK(min_t(int, leni, len)); - } - // else fallthrough - default: - status = TD_CC_STALL; - } - break; - - case RH_GET_DESCRIPTOR | RH_CLASS: - { - __u32 temp = roothub_a (ohci); - - data_buf [0] = 9; // min length; - data_buf [1] = 0x29; - data_buf [2] = temp & RH_A_NDP; - data_buf [3] = 0; - if (temp & RH_A_PSM) /* per-port power switching? */ - data_buf [3] |= 0x1; - if (temp & RH_A_NOCP) /* no overcurrent reporting? */ - data_buf [3] |= 0x10; - else if (temp & RH_A_OCPM) /* per-port overcurrent reporting? */ - data_buf [3] |= 0x8; - - datab [1] = 0; - data_buf [5] = (temp & RH_A_POTPGT) >> 24; - temp = roothub_b (ohci); - data_buf [7] = temp & RH_B_DR; - if (data_buf [2] < 7) { - data_buf [8] = 0xff; - } else { - data_buf [0] += 2; - data_buf [8] = (temp & RH_B_DR) >> 8; - data_buf [10] = data_buf [9] = 0xff; - } - - len = min_t(unsigned int, leni, - min_t(unsigned int, data_buf [0], wLength)); - OK (len); - } - - case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK (1); - - case RH_SET_CONFIGURATION: WR_RH_STAT (0x10000); OK (0); - - default: - dbg ("unsupported root hub command"); - status = TD_CC_STALL; - } - -#ifdef DEBUG - // ohci_dump_roothub (ohci, 0); -#endif - - len = min_t(int, len, leni); - if (data != data_buf) - memcpy (data, data_buf, len); - urb->actual_length = len; - urb->status = cc_to_error [status]; - -#ifdef DEBUG - urb_print (urb, "RET(rh)", usb_pipeout (urb->pipe)); -#endif - - urb->hcpriv = NULL; - usb_put_dev (usb_dev); - urb->dev = NULL; - if (urb->complete) - urb->complete (urb); - usb_put_urb (urb); - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static int rh_unlink_urb (struct urb * urb) -{ - ohci_t * ohci = urb->dev->bus->hcpriv; - - if (ohci->rh.urb == urb) { - ohci->rh.send = 0; - del_timer (&ohci->rh.rh_int_timer); - ohci->rh.urb = NULL; - - urb->hcpriv = NULL; - usb_put_dev (urb->dev); - urb->dev = NULL; - if (urb->transfer_flags & USB_ASYNC_UNLINK) { - urb->status = -ECONNRESET; - if (urb->complete) - urb->complete (urb); - } else - urb->status = -ENOENT; - usb_put_urb (urb); - } - return 0; -} - -/*-------------------------------------------------------------------------* - * HC functions - *-------------------------------------------------------------------------*/ - -/* reset the HC and BUS */ - -int hc_reset (ohci_t * ohci) -{ - int timeout = 30; - int smm_timeout = 50; /* 0,5 sec */ - - if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */ - writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */ - dbg("USB HC TakeOver from SMM"); - while (readl (&ohci->regs->control) & OHCI_CTRL_IR) { - wait_ms (10); - if (--smm_timeout == 0) { - err("USB HC TakeOver failed!"); - return -1; - } - } - } - - /* Disable HC interrupts */ - writel (OHCI_INTR_MIE, &ohci->regs->intrdisable); - - dbg("USB HC reset_hc usb-%s: ctrl = 0x%x ;", - ohci->slot_name, - readl (&ohci->regs->control)); - - /* Reset USB (needed by some controllers) */ - writel (0, &ohci->regs->control); - - /* HC Reset requires max 10 ms delay */ - writel (OHCI_HCR, &ohci->regs->cmdstatus); - while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) { - if (--timeout == 0) { - err("USB HC reset timed out!"); - return -1; - } - udelay (1); - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* Start an OHCI controller, set the BUS operational - * enable interrupts - * connect the virtual root hub */ - -int hc_start (ohci_t * ohci, struct device *parent_dev) -{ - __u32 mask; - unsigned int fminterval; - struct usb_device * usb_dev; - struct ohci_device * dev; - - ohci->disabled = 1; - - /* Tell the controller where the control and bulk lists are - * The lists are empty now. */ - - writel (0, &ohci->regs->ed_controlhead); - writel (0, &ohci->regs->ed_bulkhead); - - writel (ohci->hcca_dma, &ohci->regs->hcca); /* a reset clears this */ - - fminterval = 0x2edf; - writel ((fminterval * 9) / 10, &ohci->regs->periodicstart); - fminterval |= ((((fminterval - 210) * 6) / 7) << 16); - writel (fminterval, &ohci->regs->fminterval); - writel (0x628, &ohci->regs->lsthresh); - - /* start controller operations */ - ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER; - ohci->disabled = 0; - writel (ohci->hc_control, &ohci->regs->control); - - /* Choose the interrupts we care about now, others later on demand */ - mask = OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO; - writel (mask, &ohci->regs->intrenable); - writel (mask, &ohci->regs->intrstatus); - -#ifdef OHCI_USE_NPS - /* required for AMD-756 and some Mac platforms */ - writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM, - &ohci->regs->roothub.a); - writel (RH_HS_LPSC, &ohci->regs->roothub.status); -#endif /* OHCI_USE_NPS */ - - // POTPGT delay is bits 24-31, in 2 ms units. - mdelay ((roothub_a (ohci) >> 23) & 0x1fe); - - /* connect the virtual root hub */ - ohci->rh.devnum = 0; - usb_dev = usb_alloc_dev (NULL, ohci->bus); - if (!usb_dev) { - ohci->disabled = 1; - return -ENOMEM; - } - - dev = usb_to_ohci (usb_dev); - ohci->bus->root_hub = usb_dev; - usb_connect (usb_dev); - if (usb_register_root_hub (usb_dev, parent_dev) != 0) { - usb_free_dev (usb_dev); - ohci->disabled = 1; - return -ENODEV; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* called only from interrupt handler */ - -static void check_timeouts (struct ohci *ohci) -{ - spin_lock (&usb_ed_lock); - while (!list_empty (&ohci->timeout_list)) { - struct urb *urb; - - urb = list_entry (ohci->timeout_list.next, struct urb, urb_list); - if (time_after (jiffies, urb->timeout)) - break; - - list_del_init (&urb->urb_list); - if (urb->status != -EINPROGRESS) - continue; - - urb->transfer_flags |= USB_TIMEOUT_KILLED | USB_ASYNC_UNLINK; - spin_unlock (&usb_ed_lock); - - // outside the interrupt handler (in a timer...) - // this reference would race interrupts - sohci_unlink_urb (urb); - - spin_lock (&usb_ed_lock); - } - spin_unlock (&usb_ed_lock); -} - - -/*-------------------------------------------------------------------------*/ - -/* an interrupt happens */ - -static void hc_interrupt (int irq, void * __ohci, struct pt_regs * r) -{ - ohci_t * ohci = __ohci; - struct ohci_regs * regs = ohci->regs; - int ints; - - if ((ohci->hcca->done_head != 0) && !(le32_to_cpup (&ohci->hcca->done_head) & 0x01)) { - ints = OHCI_INTR_WDH; - } else if ((ints = (readl (®s->intrstatus) & readl (®s->intrenable))) == 0) { - return; - } - - // dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); - - if (ints & OHCI_INTR_UE) { - ohci->disabled++; - err ("OHCI Unrecoverable Error, controller usb-%s disabled", - ohci->slot_name); - // e.g. due to PCI Master/Target Abort - -#ifdef DEBUG - ohci_dump (ohci, 1); -#else - // FIXME: be optimistic, hope that bug won't repeat often. - // Make some non-interrupt context restart the controller. - // Count and limit the retries though; either hardware or - // software errors can go forever... -#endif - hc_reset (ohci); - } - - if (ints & OHCI_INTR_WDH) { - writel (OHCI_INTR_WDH, ®s->intrdisable); - dl_done_list (ohci, dl_reverse_done_list (ohci)); - writel (OHCI_INTR_WDH, ®s->intrenable); - } - - if (ints & OHCI_INTR_SO) { - dbg("USB Schedule overrun"); - writel (OHCI_INTR_SO, ®s->intrenable); - } - - // FIXME: this assumes SOF (1/ms) interrupts don't get lost... - if (ints & OHCI_INTR_SF) { - unsigned int frame = le16_to_cpu (ohci->hcca->frame_no) & 1; - writel (OHCI_INTR_SF, ®s->intrdisable); - if (ohci->ed_rm_list[!frame] != NULL) { - dl_del_list (ohci, !frame); - } - if (ohci->ed_rm_list[frame] != NULL) - writel (OHCI_INTR_SF, ®s->intrenable); - } - - if (!list_empty (&ohci->timeout_list)) { - check_timeouts (ohci); -// FIXME: enable SF as needed in a timer; -// don't make lots of 1ms interrupts -// On unloaded USB, think 4k ~= 4-5msec - if (!list_empty (&ohci->timeout_list)) - writel (OHCI_INTR_SF, ®s->intrenable); - } - - writel (ints, ®s->intrstatus); - writel (OHCI_INTR_MIE, ®s->intrenable); -} - -/*-------------------------------------------------------------------------*/ - -/* allocate OHCI */ - -static ohci_t * __devinit hc_alloc_ohci (struct pci_dev *dev, void * mem_base) -{ - ohci_t * ohci; - - ohci = (ohci_t *) kmalloc (sizeof *ohci, GFP_KERNEL); - if (!ohci) - return NULL; - - memset (ohci, 0, sizeof (ohci_t)); - - ohci->hcca = pci_alloc_consistent (dev, sizeof *ohci->hcca, - &ohci->hcca_dma); - if (!ohci->hcca) { - kfree (ohci); - return NULL; - } - memset (ohci->hcca, 0, sizeof (struct ohci_hcca)); - - ohci->disabled = 1; - ohci->sleeping = 0; - ohci->irq = -1; - ohci->regs = mem_base; - - ohci->ohci_dev = dev; -#ifdef CONFIG_PCI - pci_set_drvdata(dev, ohci); -#endif - - INIT_LIST_HEAD (&ohci->ohci_hcd_list); - list_add (&ohci->ohci_hcd_list, &ohci_hcd_list); - - INIT_LIST_HEAD (&ohci->timeout_list); - - ohci->bus = usb_alloc_bus (&sohci_device_operations); - if (!ohci->bus) { -#ifdef CONFIG_PCI - pci_set_drvdata (dev, NULL); -#endif - pci_free_consistent (ohci->ohci_dev, sizeof *ohci->hcca, - ohci->hcca, ohci->hcca_dma); - kfree (ohci); - return NULL; - } - ohci->bus->hcpriv = (void *) ohci; -#ifdef CONFIG_PCI - ohci->bus->bus_name = dev->slot_name; -#else - ohci->bus->bus_name = "ohci-hc"; -#endif - - return ohci; -} - - -/*-------------------------------------------------------------------------*/ - -/* De-allocate all resources.. */ - -static void hc_release_ohci (ohci_t * ohci) -{ - dbg ("USB HC release ohci usb-%s", ohci->slot_name); - - /* disconnect all devices */ - if (ohci->bus->root_hub) - usb_disconnect (&ohci->bus->root_hub); - - if (!ohci->disabled) - hc_reset (ohci); - - if (ohci->irq >= 0) { - free_irq (ohci->irq, ohci); - ohci->irq = -1; - } -#ifdef CONFIG_PCI - pci_set_drvdata(ohci->ohci_dev, NULL); -#endif - if (ohci->bus) { - if (ohci->bus->busnum) - usb_deregister_bus (ohci->bus); - usb_free_bus (ohci->bus); - } - - list_del (&ohci->ohci_hcd_list); - INIT_LIST_HEAD (&ohci->ohci_hcd_list); - - ohci_mem_cleanup (ohci); - - pci_free_consistent (ohci->ohci_dev, sizeof *ohci->hcca, - ohci->hcca, ohci->hcca_dma); - kfree (ohci); -} - -/*-------------------------------------------------------------------------*/ - -/* - * Host bus independent add one OHCI host controller. - */ -int -hc_add_ohci(struct pci_dev *dev, int irq, void *mem_base, unsigned long flags, - ohci_t **ohcip, const char *name, const char *slot_name) -{ - char buf[8], *bufp = buf; - ohci_t * ohci; - int ret; - -#ifndef __sparc__ - sprintf(buf, "%d", irq); -#else - bufp = __irq_itoa(irq); -#endif - printk(KERN_INFO __FILE__ ": USB OHCI at membase 0x%lx, IRQ %s\n", - (unsigned long) mem_base, bufp); - - ohci = hc_alloc_ohci (dev, mem_base); - if (!ohci) { - return -ENOMEM; - } - ohci->slot_name = slot_name; - if ((ret = ohci_mem_init (ohci)) < 0) { - hc_release_ohci (ohci); - return ret; - } - ohci->flags = flags; - if (ohci->flags & OHCI_QUIRK_AMD756) - printk (KERN_INFO __FILE__ ": AMD756 erratum 4 workaround\n"); - - if (hc_reset (ohci) < 0) { - hc_release_ohci (ohci); - return -ENODEV; - } - - /* FIXME this is a second HC reset; why?? */ - writel (ohci->hc_control = OHCI_USB_RESET, &ohci->regs->control); - wait_ms (10); - - usb_register_bus (ohci->bus); - - if (request_irq (irq, hc_interrupt, SA_SHIRQ, name, ohci) != 0) { - err ("request interrupt %s failed", bufp); - hc_release_ohci (ohci); - return -EBUSY; - } - ohci->irq = irq; - - *ohcip = ohci; - - return 0; -} - -/* - * Host bus independent remove one OHCI host controller. - */ -void hc_remove_ohci(ohci_t *ohci) -{ -#ifdef DEBUG - ohci_dump (ohci, 1); -#endif - - /* don't wake up sleeping controllers, or block in interrupt context */ - if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER || in_interrupt ()) { - dbg ("controller being disabled"); - ohci->disabled = 1; - } - - /* on return, USB will always be reset (if present) */ - if (ohci->disabled) - writel (ohci->hc_control = OHCI_USB_RESET, - &ohci->regs->control); - - hc_release_ohci (ohci); -} - -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(hc_add_ohci); -EXPORT_SYMBOL(hc_remove_ohci); -EXPORT_SYMBOL(hc_start); -EXPORT_SYMBOL(hc_reset); -EXPORT_SYMBOL(dl_done_list); -EXPORT_SYMBOL(dl_reverse_done_list); -EXPORT_SYMBOL(usb_ed_lock); diff -Nru a/drivers/usb/host/usb-ohci.h b/drivers/usb/host/usb-ohci.h --- a/drivers/usb/host/usb-ohci.h Fri Jul 19 11:04:19 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,648 +0,0 @@ -/* - * URB OHCI HCD (Host Controller Driver) for USB. - * - * (C) Copyright 1999 Roman Weissgaerber - * (C) Copyright 2000-2001 David Brownell - * - * usb-ohci.h - */ - - -static int cc_to_error[16] = { - -/* mapping of the OHCI CC status to error codes */ - /* No Error */ 0, - /* CRC Error */ -EILSEQ, - /* Bit Stuff */ -EPROTO, - /* Data Togg */ -EILSEQ, - /* Stall */ -EPIPE, - /* DevNotResp */ -ETIMEDOUT, - /* PIDCheck */ -EPROTO, - /* UnExpPID */ -EPROTO, - /* DataOver */ -EOVERFLOW, - /* DataUnder */ -EREMOTEIO, - /* reservd */ -ETIMEDOUT, - /* reservd */ -ETIMEDOUT, - /* BufferOver */ -ECOMM, - /* BuffUnder */ -ENOSR, - /* Not Access */ -ETIMEDOUT, - /* Not Access */ -ETIMEDOUT -}; - -#include - -/* ED States */ - -#define ED_NEW 0x00 -#define ED_UNLINK 0x01 -#define ED_OPER 0x02 -#define ED_DEL 0x04 -#define ED_URB_DEL 0x08 - -/* usb_ohci_ed */ -struct ed { - __u32 hwINFO; - __u32 hwTailP; - __u32 hwHeadP; - __u32 hwNextED; - - struct ed * ed_prev; - __u8 int_period; - __u8 int_branch; - __u8 int_load; - __u8 int_interval; - __u8 state; - __u8 type; - __u16 last_iso; - struct ed * ed_rm_list; - - dma_addr_t dma; - __u32 unused[3]; -} __attribute((aligned(16))); -typedef struct ed ed_t; - - -/* TD info field */ -#define TD_CC 0xf0000000 -#define TD_CC_GET(td_p) ((td_p >>28) & 0x0f) -#define TD_CC_SET(td_p, cc) (td_p) = ((td_p) & 0x0fffffff) | (((cc) & 0x0f) << 28) -#define TD_EC 0x0C000000 -#define TD_T 0x03000000 -#define TD_T_DATA0 0x02000000 -#define TD_T_DATA1 0x03000000 -#define TD_T_TOGGLE 0x00000000 -#define TD_R 0x00040000 -#define TD_DI 0x00E00000 -#define TD_DI_SET(X) (((X) & 0x07)<< 21) -#define TD_DP 0x00180000 -#define TD_DP_SETUP 0x00000000 -#define TD_DP_IN 0x00100000 -#define TD_DP_OUT 0x00080000 - -#define TD_ISO 0x00010000 -#define TD_DEL 0x00020000 - -/* CC Codes */ -#define TD_CC_NOERROR 0x00 -#define TD_CC_CRC 0x01 -#define TD_CC_BITSTUFFING 0x02 -#define TD_CC_DATATOGGLEM 0x03 -#define TD_CC_STALL 0x04 -#define TD_DEVNOTRESP 0x05 -#define TD_PIDCHECKFAIL 0x06 -#define TD_UNEXPECTEDPID 0x07 -#define TD_DATAOVERRUN 0x08 -#define TD_DATAUNDERRUN 0x09 -#define TD_BUFFEROVERRUN 0x0C -#define TD_BUFFERUNDERRUN 0x0D -#define TD_NOTACCESSED 0x0F - - -#define MAXPSW 1 - -struct td { - __u32 hwINFO; - __u32 hwCBP; /* Current Buffer Pointer */ - __u32 hwNextTD; /* Next TD Pointer */ - __u32 hwBE; /* Memory Buffer End Pointer */ - - __u16 hwPSW[MAXPSW]; - __u8 unused; - __u8 index; - struct ed * ed; - struct td * next_dl_td; - struct urb * urb; - - dma_addr_t td_dma; - dma_addr_t data_dma; - __u32 unused2[2]; -} __attribute((aligned(32))); /* normally 16, iso needs 32 */ -typedef struct td td_t; - -#define OHCI_ED_SKIP (1 << 14) - -/* - * The HCCA (Host Controller Communications Area) is a 256 byte - * structure defined in the OHCI spec. that the host controller is - * told the base address of. It must be 256-byte aligned. - */ - -#define NUM_INTS 32 /* part of the OHCI standard */ -struct ohci_hcca { - __u32 int_table[NUM_INTS]; /* Interrupt ED table */ - __u16 frame_no; /* current frame number */ - __u16 pad1; /* set to 0 on each frame_no change */ - __u32 done_head; /* info returned for an interrupt */ - u8 reserved_for_hc[116]; -} __attribute((aligned(256))); - - -/* - * Maximum number of root hub ports. - */ -#define MAX_ROOT_PORTS 15 /* maximum OHCI root hub ports */ - -/* - * This is the structure of the OHCI controller's memory mapped I/O - * region. This is Memory Mapped I/O. You must use the readl() and - * writel() macros defined in asm/io.h to access these!! - */ -struct ohci_regs { - /* control and status registers */ - __u32 revision; - __u32 control; - __u32 cmdstatus; - __u32 intrstatus; - __u32 intrenable; - __u32 intrdisable; - /* memory pointers */ - __u32 hcca; - __u32 ed_periodcurrent; - __u32 ed_controlhead; - __u32 ed_controlcurrent; - __u32 ed_bulkhead; - __u32 ed_bulkcurrent; - __u32 donehead; - /* frame counters */ - __u32 fminterval; - __u32 fmremaining; - __u32 fmnumber; - __u32 periodicstart; - __u32 lsthresh; - /* Root hub ports */ - struct ohci_roothub_regs { - __u32 a; - __u32 b; - __u32 status; - __u32 portstatus[MAX_ROOT_PORTS]; - } roothub; -} __attribute((aligned(32))); - - -/* OHCI CONTROL AND STATUS REGISTER MASKS */ - -/* - * HcControl (control) register masks - */ -#define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */ -#define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */ -#define OHCI_CTRL_IE (1 << 3) /* isochronous enable */ -#define OHCI_CTRL_CLE (1 << 4) /* control list enable */ -#define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */ -#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */ -#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */ -#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */ -#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */ - -/* pre-shifted values for HCFS */ -# define OHCI_USB_RESET (0 << 6) -# define OHCI_USB_RESUME (1 << 6) -# define OHCI_USB_OPER (2 << 6) -# define OHCI_USB_SUSPEND (3 << 6) - -/* - * HcCommandStatus (cmdstatus) register masks - */ -#define OHCI_HCR (1 << 0) /* host controller reset */ -#define OHCI_CLF (1 << 1) /* control list filled */ -#define OHCI_BLF (1 << 2) /* bulk list filled */ -#define OHCI_OCR (1 << 3) /* ownership change request */ -#define OHCI_SOC (3 << 16) /* scheduling overrun count */ - -/* - * masks used with interrupt registers: - * HcInterruptStatus (intrstatus) - * HcInterruptEnable (intrenable) - * HcInterruptDisable (intrdisable) - */ -#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */ -#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */ -#define OHCI_INTR_SF (1 << 2) /* start frame */ -#define OHCI_INTR_RD (1 << 3) /* resume detect */ -#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */ -#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */ -#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */ -#define OHCI_INTR_OC (1 << 30) /* ownership change */ -#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */ - - - -/* Virtual Root HUB */ -struct virt_root_hub { - int devnum; /* Address of Root Hub endpoint */ - void * urb; - void * int_addr; - int send; - int interval; - struct timer_list rh_int_timer; -}; - - -/* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */ - -/* destination of request */ -#define RH_INTERFACE 0x01 -#define RH_ENDPOINT 0x02 -#define RH_OTHER 0x03 - -#define RH_CLASS 0x20 -#define RH_VENDOR 0x40 - -/* Requests: bRequest << 8 | bmRequestType */ -#define RH_GET_STATUS 0x0080 -#define RH_CLEAR_FEATURE 0x0100 -#define RH_SET_FEATURE 0x0300 -#define RH_SET_ADDRESS 0x0500 -#define RH_GET_DESCRIPTOR 0x0680 -#define RH_SET_DESCRIPTOR 0x0700 -#define RH_GET_CONFIGURATION 0x0880 -#define RH_SET_CONFIGURATION 0x0900 -#define RH_GET_STATE 0x0280 -#define RH_GET_INTERFACE 0x0A80 -#define RH_SET_INTERFACE 0x0B00 -#define RH_SYNC_FRAME 0x0C80 -/* Our Vendor Specific Request */ -#define RH_SET_EP 0x2000 - - -/* Hub port features */ -#define RH_PORT_CONNECTION 0x00 -#define RH_PORT_ENABLE 0x01 -#define RH_PORT_SUSPEND 0x02 -#define RH_PORT_OVER_CURRENT 0x03 -#define RH_PORT_RESET 0x04 -#define RH_PORT_POWER 0x08 -#define RH_PORT_LOW_SPEED 0x09 - -#define RH_C_PORT_CONNECTION 0x10 -#define RH_C_PORT_ENABLE 0x11 -#define RH_C_PORT_SUSPEND 0x12 -#define RH_C_PORT_OVER_CURRENT 0x13 -#define RH_C_PORT_RESET 0x14 - -/* Hub features */ -#define RH_C_HUB_LOCAL_POWER 0x00 -#define RH_C_HUB_OVER_CURRENT 0x01 - -#define RH_DEVICE_REMOTE_WAKEUP 0x00 -#define RH_ENDPOINT_STALL 0x01 - -#define RH_ACK 0x01 -#define RH_REQ_ERR -1 -#define RH_NACK 0x00 - - -/* OHCI ROOT HUB REGISTER MASKS */ - -/* roothub.portstatus [i] bits */ -#define RH_PS_CCS 0x00000001 /* current connect status */ -#define RH_PS_PES 0x00000002 /* port enable status*/ -#define RH_PS_PSS 0x00000004 /* port suspend status */ -#define RH_PS_POCI 0x00000008 /* port over current indicator */ -#define RH_PS_PRS 0x00000010 /* port reset status */ -#define RH_PS_PPS 0x00000100 /* port power status */ -#define RH_PS_LSDA 0x00000200 /* low speed device attached */ -#define RH_PS_CSC 0x00010000 /* connect status change */ -#define RH_PS_PESC 0x00020000 /* port enable status change */ -#define RH_PS_PSSC 0x00040000 /* port suspend status change */ -#define RH_PS_OCIC 0x00080000 /* over current indicator change */ -#define RH_PS_PRSC 0x00100000 /* port reset status change */ - -/* roothub.status bits */ -#define RH_HS_LPS 0x00000001 /* local power status */ -#define RH_HS_OCI 0x00000002 /* over current indicator */ -#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */ -#define RH_HS_LPSC 0x00010000 /* local power status change */ -#define RH_HS_OCIC 0x00020000 /* over current indicator change */ -#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */ - -/* roothub.b masks */ -#define RH_B_DR 0x0000ffff /* device removable flags */ -#define RH_B_PPCM 0xffff0000 /* port power control mask */ - -/* roothub.a masks */ -#define RH_A_NDP (0xff << 0) /* number of downstream ports */ -#define RH_A_PSM (1 << 8) /* power switching mode */ -#define RH_A_NPS (1 << 9) /* no power switching */ -#define RH_A_DT (1 << 10) /* device type (mbz) */ -#define RH_A_OCPM (1 << 11) /* over current protection mode */ -#define RH_A_NOCP (1 << 12) /* no over current protection */ -#define RH_A_POTPGT (0xff << 24) /* power on to power good time */ - -/* urb */ -typedef struct -{ - ed_t * ed; - __u16 length; // number of tds associated with this request - __u16 td_cnt; // number of tds already serviced - int state; - wait_queue_head_t * wait; - td_t * td[0]; // list pointer to all corresponding TDs associated with this request - -} urb_priv_t; -#define URB_DEL 1 - - -/* Hash struct used for TD/ED hashing */ -struct hash_t { - void *virt; - dma_addr_t dma; - struct hash_t *next; // chaining for collision cases -}; - -/* List of TD/ED hash entries */ -struct hash_list_t { - struct hash_t *head; - struct hash_t *tail; -}; - -#define TD_HASH_SIZE 64 /* power'o'two */ -#define ED_HASH_SIZE 64 /* power'o'two */ - -#define TD_HASH_FUNC(td_dma) ((td_dma ^ (td_dma >> 5)) % TD_HASH_SIZE) -#define ED_HASH_FUNC(ed_dma) ((ed_dma ^ (ed_dma >> 5)) % ED_HASH_SIZE) - - -/* - * This is the full ohci controller description - * - * Note how the "proper" USB information is just - * a subset of what the full implementation needs. (Linus) - */ - - -typedef struct ohci { - struct ohci_hcca *hcca; /* hcca */ - dma_addr_t hcca_dma; - - int irq; - int disabled; /* e.g. got a UE, we're hung */ - int sleeping; - atomic_t resume_count; /* defending against multiple resumes */ - unsigned long flags; /* for HC bugs */ -#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */ - - struct ohci_regs * regs; /* OHCI controller's memory */ - struct list_head ohci_hcd_list; /* list of all ohci_hcd */ - - struct ohci * next; // chain of ohci device contexts - struct list_head timeout_list; - // struct list_head urb_list; // list of all pending urbs - // spinlock_t urb_list_lock; // lock to keep consistency - - int ohci_int_load[32]; /* load of the 32 Interrupt Chains (for load balancing)*/ - ed_t * ed_rm_list[2]; /* lists of all endpoints to be removed */ - ed_t * ed_bulktail; /* last endpoint of bulk list */ - ed_t * ed_controltail; /* last endpoint of control list */ - ed_t * ed_isotail; /* last endpoint of iso list */ - int intrstatus; - __u32 hc_control; /* copy of the hc control reg */ - struct usb_bus * bus; - struct usb_device * dev[128]; - struct virt_root_hub rh; - - /* PCI device handle, settings, ... */ - struct pci_dev *ohci_dev; - const char *slot_name; - u8 pci_latency; - struct pci_pool *td_cache; - struct pci_pool *dev_cache; - struct hash_list_t td_hash[TD_HASH_SIZE]; - struct hash_list_t ed_hash[ED_HASH_SIZE]; - -} ohci_t; - -#define NUM_EDS 32 /* num of preallocated endpoint descriptors */ - -struct ohci_device { - ed_t ed[NUM_EDS]; - dma_addr_t dma; - int ed_cnt; - wait_queue_head_t * wait; -}; - -// #define ohci_to_usb(ohci) ((ohci)->usb) -#define usb_to_ohci(usb) ((struct ohci_device *)(usb)->hcpriv) - -/* For initializing controller (mask in an HCFS mode too) */ -#define OHCI_CONTROL_INIT \ - (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE - -/* hcd */ -/* endpoint */ -static int ep_link(ohci_t * ohci, ed_t * ed); -static int ep_unlink(ohci_t * ohci, ed_t * ed); -static ed_t * ep_add_ed(struct usb_device * usb_dev, unsigned int pipe, int interval, int load, int mem_flags); -static void ep_rm_ed(struct usb_device * usb_dev, ed_t * ed); -/* td */ -static void td_fill(ohci_t * ohci, unsigned int info, dma_addr_t data, int len, struct urb * urb, int index); -static void td_submit_urb(struct urb * urb); -/* root hub */ -static int rh_submit_urb(struct urb * urb); -static int rh_unlink_urb(struct urb * urb); -static int rh_init_int_timer(struct urb * urb); - -/*-------------------------------------------------------------------------*/ - -#define ALLOC_FLAGS (in_interrupt () ? GFP_ATOMIC : GFP_KERNEL) - -#ifdef DEBUG -# define OHCI_MEM_FLAGS SLAB_POISON -#else -# define OHCI_MEM_FLAGS 0 -#endif - - -/* Recover a TD/ED using its collision chain */ -static void * -dma_to_ed_td (struct hash_list_t * entry, dma_addr_t dma) -{ - struct hash_t * scan = entry->head; - while (scan && scan->dma != dma) - scan = scan->next; - if (!scan) - BUG(); - return scan->virt; -} - -static struct ed * -dma_to_ed (struct ohci * hc, dma_addr_t ed_dma) -{ - return (struct ed *) dma_to_ed_td(&(hc->ed_hash[ED_HASH_FUNC(ed_dma)]), - ed_dma); -} - -static struct td * -dma_to_td (struct ohci * hc, dma_addr_t td_dma) -{ - return (struct td *) dma_to_ed_td(&(hc->td_hash[TD_HASH_FUNC(td_dma)]), - td_dma); -} - -/* Add a hash entry for a TD/ED; return true on success */ -static int -hash_add_ed_td(struct hash_list_t * entry, void * virt, dma_addr_t dma) -{ - struct hash_t * scan; - - scan = (struct hash_t *)kmalloc(sizeof(struct hash_t), ALLOC_FLAGS); - if (!scan) - return 0; - - if (!entry->tail) { - entry->head = entry->tail = scan; - } else { - entry->tail->next = scan; - entry->tail = scan; - } - - scan->virt = virt; - scan->dma = dma; - scan->next = NULL; - return 1; -} - -static int -hash_add_ed (struct ohci * hc, struct ed * ed) -{ - return hash_add_ed_td (&(hc->ed_hash[ED_HASH_FUNC(ed->dma)]), - ed, ed->dma); -} - -static int -hash_add_td (struct ohci * hc, struct td * td) -{ - return hash_add_ed_td (&(hc->td_hash[TD_HASH_FUNC(td->td_dma)]), - td, td->td_dma); -} - - -static void -hash_free_ed_td (struct hash_list_t * entry, void * virt) -{ - struct hash_t *scan, *prev; - scan = prev = entry->head; - - // Find and unlink hash entry - while (scan && scan->virt != virt) { - prev = scan; - scan = scan->next; - } - if (scan) { - if (scan == entry->head) { - if (entry->head == entry->tail) - entry->head = entry->tail = NULL; - else - entry->head = scan->next; - } else if (scan == entry->tail) { - entry->tail = prev; - prev->next = NULL; - } else - prev->next = scan->next; - kfree(scan); - } -} - -static void -hash_free_ed (struct ohci * hc, struct ed * ed) -{ - hash_free_ed_td (&(hc->ed_hash[ED_HASH_FUNC(ed->dma)]), ed); -} - -static void -hash_free_td (struct ohci * hc, struct td * td) -{ - hash_free_ed_td (&(hc->td_hash[TD_HASH_FUNC(td->td_dma)]), td); -} - - -static int ohci_mem_init (struct ohci *ohci) -{ - ohci->td_cache = pci_pool_create ("ohci_td", ohci->ohci_dev, - sizeof (struct td), - 32 /* byte alignment */, - 0 /* no page-crossing issues */, - GFP_KERNEL | OHCI_MEM_FLAGS); - if (!ohci->td_cache) - return -ENOMEM; - ohci->dev_cache = pci_pool_create ("ohci_dev", ohci->ohci_dev, - sizeof (struct ohci_device), - 16 /* byte alignment */, - 0 /* no page-crossing issues */, - GFP_KERNEL | OHCI_MEM_FLAGS); - if (!ohci->dev_cache) - return -ENOMEM; - return 0; -} - -static void ohci_mem_cleanup (struct ohci *ohci) -{ - if (ohci->td_cache) { - pci_pool_destroy (ohci->td_cache); - ohci->td_cache = 0; - } - if (ohci->dev_cache) { - pci_pool_destroy (ohci->dev_cache); - ohci->dev_cache = 0; - } -} - -/* TDs ... */ -static struct td * -td_alloc (struct ohci *hc, int mem_flags) -{ - dma_addr_t dma; - struct td *td; - - td = pci_pool_alloc (hc->td_cache, mem_flags, &dma); - if (td) { - td->td_dma = dma; - - /* hash it for later reverse mapping */ - if (!hash_add_td (hc, td)) { - pci_pool_free (hc->td_cache, td, dma); - return NULL; - } - } - return td; -} - -static inline void -td_free (struct ohci *hc, struct td *td) -{ - hash_free_td (hc, td); - pci_pool_free (hc->td_cache, td, td->td_dma); -} - - -/* DEV + EDs ... only the EDs need to be consistent */ -static struct ohci_device * -dev_alloc (struct ohci *hc, int mem_flags) -{ - dma_addr_t dma; - struct ohci_device *dev; - int i, offset; - - dev = pci_pool_alloc (hc->dev_cache, mem_flags, &dma); - if (dev) { - memset (dev, 0, sizeof (*dev)); - dev->dma = dma; - offset = ((char *)&dev->ed) - ((char *)dev); - for (i = 0; i < NUM_EDS; i++, offset += sizeof dev->ed [0]) - dev->ed [i].dma = dma + offset; - /* add to hashtable if used */ - } - return dev; -} - -static inline void -dev_free (struct ohci *hc, struct ohci_device *dev) -{ - pci_pool_free (hc->dev_cache, dev, dev->dma); -} - -extern spinlock_t usb_ed_lock; -extern void dl_done_list (ohci_t * ohci, td_t * td_list); -extern td_t * dl_reverse_done_list (ohci_t * ohci); - -