11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2578333ab95f70db13951d30a9ad6b565b61639a9Alan Stern * Enhanced Host Controller Interface (EHCI) driver for USB. 3578333ab95f70db13951d30a9ad6b565b61639a9Alan Stern * 4578333ab95f70db13951d30a9ad6b565b61639a9Alan Stern * Maintainer: Alan Stern <stern@rowland.harvard.edu> 5578333ab95f70db13951d30a9ad6b565b61639a9Alan Stern * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2000-2004 by David Brownell 753bd6a601a87bb6d0df844872bc15fd4e8d127ceDavid Brownell * 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify it 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * under the terms of the GNU General Public License as published by the 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Free Software Foundation; either version 2 of the License, or (at your 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * option) any later version. 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, but 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for more details. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software Foundation, 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dmapool.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 303c04e20ea95f9a8555456000e0ff340bdc46dea8Ming Lei#include <linux/vmalloc.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 34ee4ecb8ac63a5792bec448037d4b82ec4144f94bOliver Neukum#include <linux/ktime.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/list.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 3827729aadd31dafddaaf64c24f8ef6d0ff750f3aaEric Lescouet#include <linux/usb/hcd.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/moduleparam.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dma-mapping.h> 41694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#include <linux/debugfs.h> 425a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 43aa4d8342988d0c1a79ff19b2ede1e81dfbb16ea5Alek Du#include <linux/uaccess.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 50df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#if defined(CONFIG_PPC_PS3) 51df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#include <asm/firmware.h> 52df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#endif 53df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * EHCI hc_driver implementation ... experimental, incomplete. 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Based on the final 1.0 register interface specification. 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * USB 2.0 shows up in upcoming www.pcmcia.org technology. 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * First was PCMCIA, like ISA; then CardBus, which is PCI. 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Next comes "CardBay", using USB 2.0 signals. 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Contains additional contributions by Brad Hards, Rory Bolt, and others. 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Special thanks to Intel and VIA for providing host controllers to 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * test this driver on, and Cypress (including In-System Design) for 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * providing early devices for those host controllers to talk to! 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_AUTHOR "David Brownell" 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB 2.0 'Enhanced' Host Controller (EHCI) Driver" 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char hcd_name [] = "ehci_hcd"; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 769776afc8b3dc487557f3f576002520f59be334e6David Brownell#undef VERBOSE_DEBUG 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef EHCI_URB_TRACE 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef DEBUG 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_STATS 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* magic numbers that can affect system performance */ 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_TUNE_RL_TT 0 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_TUNE_MULT_TT 1 89ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern/* 90ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern * Some drivers think it's safe to schedule isochronous transfers more than 91ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern * 256 ms into the future (partly as a result of an old bug in the scheduling 92ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern * code). In an attempt to avoid trouble, we will use a minimum scheduling 93ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern * length of 512 frames instead of 256. 94ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern */ 95ffda080353979273e8aa69fc1e6134f20643ae56Alan Stern#define EHCI_TUNE_FLS 1 /* (medium) 512-frame schedule */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9707d29b63ef6b39963ab37818653284d861cf55afAlan Stern#define EHCI_IAA_MSECS 10 /* arbitrary */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */ 100004c19682884d4f40000ce1ded53f4a1d0b18206Alan Stern#define EHCI_SHRINK_JIFFIES (DIV_ROUND_UP(HZ, 200) + 1) 101fcda37cb42cc0aa039a2d1e06ec801e4e9f417f4Ming Lei /* 5-ms async qh unlink delay */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Initial IRQ latency: faster than hw default */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int log2_irq_thresh = 0; // 0 to 6 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param (log2_irq_thresh, int, S_IRUGO); 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes"); 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* initial park setting: slower than hw default */ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic unsigned park = 0; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param (park, uint, S_IRUGO); 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets"); 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11393f1a47c4af34c4ee014b3d2aae70089b3b69f72David Brownell/* for flakey hardware, ignore overcurrent indicators */ 11490ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellstatic bool ignore_oc = 0; 11593f1a47c4af34c4ee014b3d2aae70089b3b69f72David Brownellmodule_param (ignore_oc, bool, S_IRUGO); 11693f1a47c4af34c4ee014b3d2aae70089b3b69f72David BrownellMODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications"); 11793f1a47c4af34c4ee014b3d2aae70089b3b69f72David Brownell 11848f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du/* for link power management(LPM) feature */ 11948f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Dustatic unsigned int hird; 12048f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Dumodule_param(hird, int, S_IRUGO); 121cc55687124426e3a6a5301780c4e6bb36bb531fdNiels de VosMODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us"); 12248f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT) 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci.h" 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci-dbg.c" 129ad93562bdeecdded7d02eaaaf1aa5705ab57b1b7Andiry Xu#include "pci-quirks.h" 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 133bc29847e16cb6b571157220ec9b20a7d86e58046Alan Sternstatic void 134bc29847e16cb6b571157220ec9b20a7d86e58046Alan Sterntimer_action(struct ehci_hcd *ehci, enum ehci_timer_action action) 135bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern{ 136bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern /* Don't override timeouts which shrink or (later) disable 137bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern * the async ring; just the I/O watchdog. Note that if a 138bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern * SHRINK were pending, OFF would never be requested. 139bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern */ 140bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern if (timer_pending(&ehci->watchdog) 141bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF)) 142bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern & ehci->actions)) 143bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern return; 144bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern 145bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern if (!test_and_set_bit(action, &ehci->actions)) { 146bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern unsigned long t; 147bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern 148bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern switch (action) { 149bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern case TIMER_IO_WATCHDOG: 150403dbd36739e344d2d25f56ebbe342248487bd48Alek Du if (!ehci->need_io_watchdog) 151403dbd36739e344d2d25f56ebbe342248487bd48Alek Du return; 152bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern t = EHCI_IO_JIFFIES; 153bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern break; 154bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern case TIMER_ASYNC_OFF: 155bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern t = EHCI_ASYNC_JIFFIES; 156bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern break; 157bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern /* case TIMER_ASYNC_SHRINK: */ 158bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern default: 159004c19682884d4f40000ce1ded53f4a1d0b18206Alan Stern t = EHCI_SHRINK_JIFFIES; 160bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern break; 161bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern } 162bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern mod_timer(&ehci->watchdog, t + jiffies); 163bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern } 164bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern} 165bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern 166bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern/*-------------------------------------------------------------------------*/ 167bc29847e16cb6b571157220ec9b20a7d86e58046Alan Stern 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * handshake - spin reading hc until handshake completes or fails 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @ptr: address of hc register to be read 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @mask: bits to look at in result of read 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @done: value of those bits when handshake succeeds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @usec: timeout in microseconds 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns negative errno, or zero on success 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Success happens when the "mask" bits have the specified value (hardware 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * handshake done). There are two failure modes: "usec" have passed (major 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware flakeout), or the register reads as all-ones (hardware removed). 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * That last failure should_only happen in cases like physical cardbus eject 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * before driver shutdown. But it also seems to be caused by bugs in cardbus 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bridge shutdown: shutting down the bridge before the devices using it. 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 185083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidtstatic int handshake (struct ehci_hcd *ehci, void __iomem *ptr, 186083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt u32 mask, u32 done, int usec) 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 result; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 191083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt result = ehci_readl(ehci, ptr); 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result == ~(u32)0) /* card removed */ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result &= mask; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result == done) 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay (1); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usec--; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (usec > 0); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ETIMEDOUT; 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20365fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET/* check TDI/ARC silicon is in host mode */ 20465fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTETstatic int tdi_in_host_mode (struct ehci_hcd *ehci) 20565fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET{ 20665fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET u32 __iomem *reg_ptr; 20765fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET u32 tmp; 20865fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET 20965fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE); 21065fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET tmp = ehci_readl(ehci, reg_ptr); 21165fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET return (tmp & 3) == USBMODE_CM_HC; 21265fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET} 21365fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* force HC to halt state from unknown (EHCI spec section 2.3) */ 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ehci_halt (struct ehci_hcd *ehci) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 217083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt u32 temp = ehci_readl(ehci, &ehci->regs->status); 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21972f30b6f2f5f68dd426e9fe83817b882c2d04e50David Brownell /* disable any irqs left enabled by previous code */ 220083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, 0, &ehci->regs->intr_enable); 22172f30b6f2f5f68dd426e9fe83817b882c2d04e50David Brownell 22265fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET if (ehci_is_TDI(ehci) && tdi_in_host_mode(ehci) == 0) { 22365fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET return 0; 22465fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET } 22565fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((temp & STS_HALT) != 0) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 229083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt temp = ehci_readl(ehci, &ehci->regs->command); 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp &= ~CMD_RUN; 231083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, temp, &ehci->regs->command); 232083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt return handshake (ehci, &ehci->regs->status, 233083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt STS_HALT, STS_HALT, 16 * 125); 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 236df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#if defined(CONFIG_USB_SUSPEND) && defined(CONFIG_PPC_PS3) 237df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 238df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand/* 239df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * The EHCI controller of the Cell Super Companion Chip used in the 240df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * PS3 will stop the root hub after all root hub ports are suspended. 241df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * When in this condition handshake will return -ETIMEDOUT. The 242df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * STS_HLT bit will not be set, so inspection of the frame index is 243df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * used here to test for the condition. If the condition is found 244df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand * return success to allow the USB suspend to complete. 245df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand */ 246df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 247df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levandstatic int handshake_for_broken_root_hub(struct ehci_hcd *ehci, 248df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand void __iomem *ptr, u32 mask, u32 done, 249df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand int usec) 250df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand{ 251df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand unsigned int old_index; 252df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand int error; 253df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 254df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 255df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand return -ETIMEDOUT; 256df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 257df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand old_index = ehci_read_frame_index(ehci); 258df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 259df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand error = handshake(ehci, ptr, mask, done, usec); 260df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 261df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand if (error == -ETIMEDOUT && ehci_read_frame_index(ehci) == old_index) 262df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand return 0; 263df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 264df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand return error; 265df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand} 266df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 267df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#else 268df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 269df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levandstatic int handshake_for_broken_root_hub(struct ehci_hcd *ehci, 270df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand void __iomem *ptr, u32 mask, u32 done, 271df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand int usec) 272df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand{ 273df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand return -ETIMEDOUT; 274df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand} 275df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 276df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand#endif 277df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 2780bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownellstatic int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr, 2790bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell u32 mask, u32 done, int usec) 2800bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell{ 2810bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell int error; 2820bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell 2830bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell error = handshake(ehci, ptr, mask, done, usec); 284df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand if (error == -ETIMEDOUT) 285df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand error = handshake_for_broken_root_hub(ehci, ptr, mask, done, 286df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand usec); 287df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cbGeoff Levand 2880bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell if (error) { 2890bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell ehci_halt(ehci); 290e8799906045302776b35b66b16495c575db3b69cAlan Stern ehci->rh_state = EHCI_RH_HALTED; 29165cb76baa1058d17d51ce948b697cdbd5dc97421Ozan Çağlayan ehci_err(ehci, "force halt; handshake %p %08x %08x -> %d\n", 2920bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell ptr, mask, done, error); 2930bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell } 2940bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell 2950bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell return error; 2960bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell} 2970bcfeb3ec9467a8dfae3e906925ec28fe788afcfDavid Brownell 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* put TDI/ARC silicon into EHCI mode */ 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tdi_reset (struct ehci_hcd *ehci) 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 __iomem *reg_ptr; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 tmp; 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 304d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE); 305083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt tmp = ehci_readl(ehci, reg_ptr); 306d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov tmp |= USBMODE_CM_HC; 307d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov /* The default byte access to MMR space is LE after 308d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov * controller reset. Set the required endian mode 309d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov * for transfer buffers to match the host microprocessor 310d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov */ 311d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov if (ehci_big_endian_mmio(ehci)) 312d23a13779f14808b54181d31222e6c44532abd80Vladimir Barinov tmp |= USBMODE_BE; 313083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, tmp, reg_ptr); 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* reset a non-running (STS_HALT == 1) controller */ 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ehci_reset (struct ehci_hcd *ehci) 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 320083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt u32 command = ehci_readl(ehci, &ehci->regs->command); 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3228d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel /* If the EHCI debug controller is active, special care must be 3238d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel * taken before and after a host controller reset */ 3248d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel if (ehci->debug && !dbgp_reset_prep()) 3258d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel ehci->debug = NULL; 3268d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds command |= CMD_RESET; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg_cmd (ehci, "reset", command); 329083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, command, &ehci->regs->command); 330e8799906045302776b35b66b16495c575db3b69cAlan Stern ehci->rh_state = EHCI_RH_HALTED; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci->next_statechange = jiffies; 332083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt retval = handshake (ehci, &ehci->regs->command, 333083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt CMD_RESET, 0, 250 * 1000); 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 335331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du if (ehci->has_hostpc) { 336331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du ehci_writel(ehci, USBMODE_EX_HC | USBMODE_EX_VBPS, 337331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du (u32 __iomem *)(((u8 *)ehci->regs) + USBMODE_EX)); 338331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du ehci_writel(ehci, TXFIFO_DEFAULT, 339331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du (u32 __iomem *)(((u8 *)ehci->regs) + TXFILLTUNING)); 340331ac6b288d9f3689514ced1878041fb0df7e13cAlek Du } 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ehci_is_TDI(ehci)) 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tdi_reset (ehci); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3478d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel if (ehci->debug) 3488d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel dbgp_external_startup(); 3498d053c79f22462f55c02c8083580730b922cf7b4Jason Wessel 350a448e4dc25303fe551e4dafe16c8c7c34f1b9d82Alan Stern ehci->port_c_suspend = ehci->suspended_ports = 351a448e4dc25303fe551e4dafe16c8c7c34f1b9d82Alan Stern ehci->resuming_ports = 0; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* idle the controller (from running) */ 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ehci_quiesce (struct ehci_hcd *ehci) 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 temp; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef DEBUG 361e8799906045302776b35b66b16495c575db3b69cAlan Stern if (ehci->rh_state != EHCI_RH_RUNNING) 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG (); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for any schedule enables/disables to take effect */ 366083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt temp = ehci_readl(ehci, &ehci->regs->command) << 10; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp &= STS_ASS | STS_PSS; 368c765d4cad977f7e454a53d5bca5a942156b2d94cKarsten Wiese if (handshake_on_error_set_halt(ehci, &ehci->regs->status, 369c765d4cad977f7e454a53d5bca5a942156b2d94cKarsten Wiese STS_ASS | STS_PSS, temp, 16 * 125)) 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* then disable anything that's still active */ 373083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt temp = ehci_readl(ehci, &ehci->regs->command); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp &= ~(CMD_ASE | CMD_IAAD | CMD_PSE); 375083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, temp, &ehci->regs->command); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hardware can take 16 microframes to turn off ... */ 378c765d4cad977f7e454a53d5bca5a942156b2d94cKarsten Wiese handshake_on_error_set_halt(ehci, &ehci->regs->status, 379c765d4cad977f7e454a53d5bca5a942156b2d94cKarsten Wiese STS_ASS | STS_PSS, 0, 16 * 125); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38407d29b63ef6b39963ab37818653284d861cf55afAlan Sternstatic void end_unlink_async(struct ehci_hcd *ehci); 3857d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void ehci_work(struct ehci_hcd *ehci); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci-hub.c" 38848f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du#include "ehci-lpm.c" 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci-mem.c" 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci-q.c" 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "ehci-sched.c" 3924c67045bfc2c14a1d3c6040e80eb4a62946282ddKirill Smelkov#include "ehci-sysfs.c" 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39607d29b63ef6b39963ab37818653284d861cf55afAlan Sternstatic void ehci_iaa_watchdog(unsigned long param) 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = (struct ehci_hcd *) param; 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&ehci->lock, flags); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 403e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell /* Lost IAA irqs wedge things badly; seen first with a vt8235. 404e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * So we need this watchdog, but must protect it against both 405e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * (a) SMP races against real IAA firing and retriggering, and 406e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * (b) clean HC shutdown, when IAA watchdog was pending. 407e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell */ 408e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell if (ehci->reclaim 409e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell && !timer_pending(&ehci->iaa_watchdog) 410e8799906045302776b35b66b16495c575db3b69cAlan Stern && ehci->rh_state == EHCI_RH_RUNNING) { 411e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell u32 cmd, status; 412e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell 413e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell /* If we get here, IAA is *REALLY* late. It's barely 414e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * conceivable that the system is so busy that CMD_IAAD 415e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * is still legitimately set, so let's be sure it's 416e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * clear before we read STS_IAA. (The HC should clear 417e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * CMD_IAAD when it sets STS_IAA.) 418e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell */ 419e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell cmd = ehci_readl(ehci, &ehci->regs->command); 420e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell if (cmd & CMD_IAAD) 421e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell ehci_writel(ehci, cmd & ~CMD_IAAD, 422e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell &ehci->regs->command); 423e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell 424e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell /* If IAA is set here it either legitimately triggered 425e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * before we cleared IAAD above (but _way_ late, so we'll 426e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * still count it as lost) ... or a silicon erratum: 427e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * - VIA seems to set IAA without triggering the IRQ; 428e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell * - IAAD potentially cleared without setting IAA. 429e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell */ 430e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell status = ehci_readl(ehci, &ehci->regs->status); 431e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell if ((status & STS_IAA) || !(cmd & CMD_IAAD)) { 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COUNT (ehci->stats.lost_iaa); 433083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, STS_IAA, &ehci->regs->status); 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 435e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell 436e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n", 437e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell status, cmd); 43807d29b63ef6b39963ab37818653284d861cf55afAlan Stern end_unlink_async(ehci); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44107d29b63ef6b39963ab37818653284d861cf55afAlan Stern spin_unlock_irqrestore(&ehci->lock, flags); 44207d29b63ef6b39963ab37818653284d861cf55afAlan Stern} 44307d29b63ef6b39963ab37818653284d861cf55afAlan Stern 44407d29b63ef6b39963ab37818653284d861cf55afAlan Sternstatic void ehci_watchdog(unsigned long param) 44507d29b63ef6b39963ab37818653284d861cf55afAlan Stern{ 44607d29b63ef6b39963ab37818653284d861cf55afAlan Stern struct ehci_hcd *ehci = (struct ehci_hcd *) param; 44707d29b63ef6b39963ab37818653284d861cf55afAlan Stern unsigned long flags; 44807d29b63ef6b39963ab37818653284d861cf55afAlan Stern 44907d29b63ef6b39963ab37818653284d861cf55afAlan Stern spin_lock_irqsave(&ehci->lock, flags); 45007d29b63ef6b39963ab37818653284d861cf55afAlan Stern 45107d29b63ef6b39963ab37818653284d861cf55afAlan Stern /* stop async processing after it's idled a bit */ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (test_bit (TIMER_ASYNC_OFF, &ehci->actions)) 45326f953fd884ea4879585287917f855c63c6b2666David Brownell start_unlink_async (ehci, ehci->async); 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ehci could run by timer, without IRQs ... */ 4567d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells ehci_work (ehci); 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&ehci->lock, flags); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4618903795a5275e0366acf961190c57074ad27f9bbAlan Stern/* On some systems, leaving remote wakeup enabled prevents system shutdown. 4628903795a5275e0366acf961190c57074ad27f9bbAlan Stern * The firmware seems to think that powering off is a wakeup event! 4638903795a5275e0366acf961190c57074ad27f9bbAlan Stern * This routine turns off remote wakeup and everything else, on all ports. 4648903795a5275e0366acf961190c57074ad27f9bbAlan Stern */ 4658903795a5275e0366acf961190c57074ad27f9bbAlan Sternstatic void ehci_turn_off_all_ports(struct ehci_hcd *ehci) 4668903795a5275e0366acf961190c57074ad27f9bbAlan Stern{ 4678903795a5275e0366acf961190c57074ad27f9bbAlan Stern int port = HCS_N_PORTS(ehci->hcs_params); 4688903795a5275e0366acf961190c57074ad27f9bbAlan Stern 4698903795a5275e0366acf961190c57074ad27f9bbAlan Stern while (port--) 4708903795a5275e0366acf961190c57074ad27f9bbAlan Stern ehci_writel(ehci, PORT_RWC_BITS, 4718903795a5275e0366acf961190c57074ad27f9bbAlan Stern &ehci->regs->port_status[port]); 4728903795a5275e0366acf961190c57074ad27f9bbAlan Stern} 4738903795a5275e0366acf961190c57074ad27f9bbAlan Stern 47421da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp/* 47521da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp * Halt HC, turn off all ports, and let the BIOS use the companion controllers. 47621da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp * Should be called with ehci->lock held. 47772f30b6f2f5f68dd426e9fe83817b882c2d04e50David Brownell */ 47821da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharpstatic void ehci_silence_controller(struct ehci_hcd *ehci) 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 48021da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp ehci_halt(ehci); 4818903795a5275e0366acf961190c57074ad27f9bbAlan Stern ehci_turn_off_all_ports(ehci); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* make BIOS/etc use companion controller during reboot */ 484083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, 0, &ehci->regs->configured_flag); 4858903795a5275e0366acf961190c57074ad27f9bbAlan Stern 4868903795a5275e0366acf961190c57074ad27f9bbAlan Stern /* unblock posted writes */ 4878903795a5275e0366acf961190c57074ad27f9bbAlan Stern ehci_readl(ehci, &ehci->regs->configured_flag); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 49021da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp/* ehci_shutdown kick in for silicon on any bus (not just pci, etc). 49121da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp * This forcibly disables dma and IRQs, helping kexec and other cases 49221da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp * where the next system software may expect clean state. 49321da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp */ 49421da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharpstatic void ehci_shutdown(struct usb_hcd *hcd) 49521da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp{ 49621da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp struct ehci_hcd *ehci = hcd_to_ehci(hcd); 49721da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp 49821da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp del_timer_sync(&ehci->watchdog); 49921da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp del_timer_sync(&ehci->iaa_watchdog); 50021da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp 50121da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp spin_lock_irq(&ehci->lock); 50221da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp ehci_silence_controller(ehci); 50321da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp spin_unlock_irq(&ehci->lock); 50421da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp} 50521da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp 50656c1e26d75008d39f1067f453719857a81109d9fDavid Brownellstatic void ehci_port_power (struct ehci_hcd *ehci, int is_on) 50756c1e26d75008d39f1067f453719857a81109d9fDavid Brownell{ 50856c1e26d75008d39f1067f453719857a81109d9fDavid Brownell unsigned port; 50956c1e26d75008d39f1067f453719857a81109d9fDavid Brownell 51056c1e26d75008d39f1067f453719857a81109d9fDavid Brownell if (!HCS_PPC (ehci->hcs_params)) 51156c1e26d75008d39f1067f453719857a81109d9fDavid Brownell return; 51256c1e26d75008d39f1067f453719857a81109d9fDavid Brownell 51356c1e26d75008d39f1067f453719857a81109d9fDavid Brownell ehci_dbg (ehci, "...power%s ports...\n", is_on ? "up" : "down"); 51456c1e26d75008d39f1067f453719857a81109d9fDavid Brownell for (port = HCS_N_PORTS (ehci->hcs_params); port > 0; ) 51556c1e26d75008d39f1067f453719857a81109d9fDavid Brownell (void) ehci_hub_control(ehci_to_hcd(ehci), 51656c1e26d75008d39f1067f453719857a81109d9fDavid Brownell is_on ? SetPortFeature : ClearPortFeature, 51756c1e26d75008d39f1067f453719857a81109d9fDavid Brownell USB_PORT_FEAT_POWER, 51856c1e26d75008d39f1067f453719857a81109d9fDavid Brownell port--, NULL, 0); 519383975d765523a56dc43a6cd6d52e9b376800cf2Alan Stern /* Flush those writes */ 520383975d765523a56dc43a6cd6d52e9b376800cf2Alan Stern ehci_readl(ehci, &ehci->regs->command); 52156c1e26d75008d39f1067f453719857a81109d9fDavid Brownell msleep(20); 52256c1e26d75008d39f1067f453719857a81109d9fDavid Brownell} 52356c1e26d75008d39f1067f453719857a81109d9fDavid Brownell 5247ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter/*-------------------------------------------------------------------------*/ 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5267ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter/* 5277ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * ehci_work is called from some interrupts, timers, and so on. 5287ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * it calls driver completion functions, after dropping ehci->lock. 5297ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter */ 5307d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void ehci_work (struct ehci_hcd *ehci) 5317ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter{ 5327ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter timer_action_done (ehci, TIMER_IO_WATCHDOG); 5337ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter 5347ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter /* another CPU may drop ehci->lock during a schedule scan while 5357ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * it reports urb completions. this flag guards against bogus 5367ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * attempts at re-entrant schedule scanning. 5377ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter */ 5387ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter if (ehci->scanning) 5397ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter return; 5407ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->scanning = 1; 5417d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells scan_async (ehci); 5427ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter if (ehci->next_uframe != -1) 5437d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells scan_periodic (ehci); 5447ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->scanning = 0; 5457ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter 5467ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter /* the IO watchdog guards against hardware or driver bugs that 5477ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * misplace IRQs, and should let us run completely without IRQs. 5487ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter * such lossage has been observed on both VT6202 and VT8235. 5497ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter */ 550e8799906045302776b35b66b16495c575db3b69cAlan Stern if (ehci->rh_state == EHCI_RH_RUNNING && 5517ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter (ehci->async->qh_next.ptr != NULL || 5527ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->periodic_sched != 0)) 5537ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter timer_action (ehci, TIMER_IO_WATCHDOG); 5547ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter} 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55621da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp/* 55721da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp * Called when the ehci_hcd module is removed. 55821da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp */ 5597ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porterstatic void ehci_stop (struct usb_hcd *hcd) 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = hcd_to_ehci (hcd); 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5637ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_dbg (ehci, "stop\n"); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5657ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter /* no more interrupts ... */ 5667ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter del_timer_sync (&ehci->watchdog); 56707d29b63ef6b39963ab37818653284d861cf55afAlan Stern del_timer_sync(&ehci->iaa_watchdog); 56856c1e26d75008d39f1067f453719857a81109d9fDavid Brownell 5697ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter spin_lock_irq(&ehci->lock); 570e8799906045302776b35b66b16495c575db3b69cAlan Stern if (ehci->rh_state == EHCI_RH_RUNNING) 5717ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_quiesce (ehci); 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57321da84a89312dd8d014ca3352d1ab5c2279ec548Sarah Sharp ehci_silence_controller(ehci); 5747ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_reset (ehci); 5757ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter spin_unlock_irq(&ehci->lock); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5774c67045bfc2c14a1d3c6040e80eb4a62946282ddKirill Smelkov remove_sysfs_files(ehci); 5787ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter remove_debug_files (ehci); 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5807ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter /* root hub is shut down separately (first, when possible) */ 5817ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter spin_lock_irq (&ehci->lock); 5827ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter if (ehci->async) 5837d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells ehci_work (ehci); 5847ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter spin_unlock_irq (&ehci->lock); 5857ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_mem_cleanup (ehci); 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 587ad93562bdeecdded7d02eaaaf1aa5705ab57b1b7Andiry Xu if (ehci->amd_pll_fix == 1) 588ad93562bdeecdded7d02eaaaf1aa5705ab57b1b7Andiry Xu usb_amd_dev_put(); 58905570297ecbe834b1756b522412b68eaffb9ab11Alex He 5907ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#ifdef EHCI_STATS 5917ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n", 5927ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, 5937ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->stats.lost_iaa); 5947ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci_dbg (ehci, "complete %ld unlink %ld\n", 5957ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ehci->stats.complete, ehci->stats.unlink); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 598083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt dbg_status (ehci, "ehci_stop completed", 599083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_readl(ehci, &ehci->regs->status)); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 602188075211cc75a31190de4a19a084e3d83ee1c89David Brownell/* one-time init, only for memory state */ 603188075211cc75a31190de4a19a084e3d83ee1c89David Brownellstatic int ehci_init(struct usb_hcd *hcd) 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 605188075211cc75a31190de4a19a084e3d83ee1c89David Brownell struct ehci_hcd *ehci = hcd_to_ehci(hcd); 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 temp; 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 hcc_params; 6093807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du struct ehci_qh_hw *hw; 610188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 611188075211cc75a31190de4a19a084e3d83ee1c89David Brownell spin_lock_init(&ehci->lock); 612188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 613403dbd36739e344d2d25f56ebbe342248487bd48Alek Du /* 614403dbd36739e344d2d25f56ebbe342248487bd48Alek Du * keep io watchdog by default, those good HCDs could turn off it later 615403dbd36739e344d2d25f56ebbe342248487bd48Alek Du */ 616403dbd36739e344d2d25f56ebbe342248487bd48Alek Du ehci->need_io_watchdog = 1; 617188075211cc75a31190de4a19a084e3d83ee1c89David Brownell init_timer(&ehci->watchdog); 618188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->watchdog.function = ehci_watchdog; 619188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->watchdog.data = (unsigned long) ehci; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 62107d29b63ef6b39963ab37818653284d861cf55afAlan Stern init_timer(&ehci->iaa_watchdog); 62207d29b63ef6b39963ab37818653284d861cf55afAlan Stern ehci->iaa_watchdog.function = ehci_iaa_watchdog; 62307d29b63ef6b39963ab37818653284d861cf55afAlan Stern ehci->iaa_watchdog.data = (unsigned long) ehci; 62407d29b63ef6b39963ab37818653284d861cf55afAlan Stern 625f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); 626f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 628cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov * by default set standard 80% (== 100 usec/uframe) max periodic 629cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov * bandwidth as required by USB 2.0 630cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov */ 631cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov ehci->uframe_periodic_max = 100; 632cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov 633cc62a7eb6396e8be95b9a30053ed09191818b99bKirill Smelkov /* 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hw default: 1K periodic list heads, one per frame. 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic_size can shrink by USBCMD update if hcc_params allows. 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci->periodic_size = DEFAULT_I_TDPS; 6389aa09d2f8f4bc440d6db1c3414d4009642875240Karsten Wiese INIT_LIST_HEAD(&ehci->cached_itd_list); 6390e5f231bc16ff9910882fa5b9d64d80e7691cfabAlan Stern INIT_LIST_HEAD(&ehci->cached_sitd_list); 640f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern 641f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern if (HCC_PGM_FRAMELISTLEN(hcc_params)) { 642f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern /* periodic schedule size can be smaller than default */ 643f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern switch (EHCI_TUNE_FLS) { 644f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern case 0: ehci->periodic_size = 1024; break; 645f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern case 1: ehci->periodic_size = 512; break; 646f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern case 2: ehci->periodic_size = 256; break; 647f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern default: BUG(); 648f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern } 649f75593ceaa08e6d27aec1a5de31cded19e850dd1Alan Stern } 650188075211cc75a31190de4a19a084e3d83ee1c89David Brownell if ((retval = ehci_mem_init(ehci, GFP_KERNEL)) < 0) 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* controllers may cache some of the periodic schedule ... */ 65453bd6a601a87bb6d0df844872bc15fd4e8d127ceDavid Brownell if (HCC_ISOC_CACHE(hcc_params)) // full frame cache 655dccd574cccad950d9ed9bc192eae4089c6044d9dSarah Sharp ehci->i_thresh = 2 + 8; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else // N microframes cached 657188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci->reclaim = NULL; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci->next_uframe = -1; 6619aa09d2f8f4bc440d6db1c3414d4009642875240Karsten Wiese ehci->clock_frame = -1; 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dedicate a qh for the async ring head, since we couldn't unlink 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a 'real' qh without stopping the async schedule [4.8]. use it 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as the 'reclamation list head' too. 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its dummy is used in hw_alt_next of many tds, to prevent the qh 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from automatically advancing to the next td after short reads. 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 670188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->async->qh_next.qh = NULL; 6713807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw = ehci->async->hw; 6723807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma); 6733807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD); 6745c551ead8ae210031fc241729f4391dff7e682ceRicardo Martins#if defined(CONFIG_PPC_PS3) 675aaa0ef289afe9186f81e2340114ea413eef0492aGeoff Levand hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */ 6765c551ead8ae210031fc241729f4391dff7e682ceRicardo Martins#endif 6773807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT); 6783807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw->hw_qtd_next = EHCI_LIST_END(ehci); 679188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->async->qh_state = QH_STATE_LINKED; 6803807e26d69b9ad3864fe03224ebebc9610d5802eAlek Du hw->hw_alt_next = QTD_NEXT(ehci, ehci->async->dummy->qtd_dma); 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear interrupt enables, set irq latency */ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (log2_irq_thresh < 0 || log2_irq_thresh > 6) 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds log2_irq_thresh = 0; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = 1 << (16 + log2_irq_thresh); 6865a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du if (HCC_PER_PORT_CHANGE_EVENT(hcc_params)) { 6875a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du ehci->has_ppcd = 1; 6885a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du ehci_dbg(ehci, "enable per-port change event\n"); 6895a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du temp |= CMD_PPCEE; 6905a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du } 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (HCC_CANPARK(hcc_params)) { 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* HW default park == 3, on hardware that supports it (like 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NVidia and ALI silicon), maximizes throughput on the async 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * schedule by avoiding QH fetches between transfers. 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * With fast usb storage devices and NForce2, "park" seems to 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * make problems: throughput reduction (!), data errors... 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (park) { 700188075211cc75a31190de4a19a084e3d83ee1c89David Brownell park = min(park, (unsigned) 3); 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp |= CMD_PARK; 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp |= park << 8; 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 704188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci_dbg(ehci, "park %d\n", park); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 706188075211cc75a31190de4a19a084e3d83ee1c89David Brownell if (HCC_PGM_FRAMELISTLEN(hcc_params)) { 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* periodic schedule size can be smaller than default */ 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp &= ~(3 << 2); 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp |= (EHCI_TUNE_FLS << 2); 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 71148f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du if (HCC_LPM(hcc_params)) { 71248f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du /* support link power management EHCI 1.1 addendum */ 71348f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du ehci_dbg(ehci, "support lpm\n"); 71448f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du ehci->has_lpm = 1; 71548f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du if (hird > 0xf) { 71648f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du ehci_dbg(ehci, "hird %d invalid, use default 0", 71748f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du hird); 71848f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du hird = 0; 71948f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du } 72048f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du temp |= hird << 24; 72148f24970144479c29b8cee6d2e1dbedf6dcf9cfbAlek Du } 722188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->command = temp; 723188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 72440f8db8f8f5af2cafeb976ae15e11aca641a931dAlan Stern /* Accept arbitrarily long scatter-gather lists */ 7254307a28eb0128417d9a2b9d858d2bce70ee5b383Andrea Righi if (!(hcd->driver->flags & HCD_LOCAL_MEM)) 7264307a28eb0128417d9a2b9d858d2bce70ee5b383Andrea Righi hcd->self.sg_tablesize = ~0; 727188075211cc75a31190de4a19a084e3d83ee1c89David Brownell return 0; 728188075211cc75a31190de4a19a084e3d83ee1c89David Brownell} 729188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 730188075211cc75a31190de4a19a084e3d83ee1c89David Brownell/* start HC running; it's halted, ehci_init() has been run (once) */ 731188075211cc75a31190de4a19a084e3d83ee1c89David Brownellstatic int ehci_run (struct usb_hcd *hcd) 732188075211cc75a31190de4a19a084e3d83ee1c89David Brownell{ 733188075211cc75a31190de4a19a084e3d83ee1c89David Brownell struct ehci_hcd *ehci = hcd_to_ehci (hcd); 734188075211cc75a31190de4a19a084e3d83ee1c89David Brownell u32 temp; 735188075211cc75a31190de4a19a084e3d83ee1c89David Brownell u32 hcc_params; 736188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 7371d619f128ba911cd3e6d6ad3475f146eb92f5c27Marcelo Tosatti hcd->uses_new_polling = 1; 7381d619f128ba911cd3e6d6ad3475f146eb92f5c27Marcelo Tosatti 739188075211cc75a31190de4a19a084e3d83ee1c89David Brownell /* EHCI spec section 4.1 */ 740876e0df902c726408c84b75dab673a90fd492e1dGeoff Levand 741083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); 742083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next); 743188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 744188075211cc75a31190de4a19a084e3d83ee1c89David Brownell /* 745188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * hcc_params controls whether ehci->regs->segment must (!!!) 746188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * be used; it constrains QH/ITD/SITD and QTD locations. 747188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * pci_pool consistent memory always uses segment zero. 748188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * streaming mappings for I/O buffers, like pci_map_single(), 749188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * can return segments above 4GB, if the device allows. 750188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * 751188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * NOTE: the dma mask is visible through dma_supported(), so 752188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * drivers can pass this info along ... like NETIF_F_HIGHDMA, 753188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * Scsi_Host.highmem_io, and so forth. It's readonly to all 754188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * host side drivers though. 755188075211cc75a31190de4a19a084e3d83ee1c89David Brownell */ 756083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); 757188075211cc75a31190de4a19a084e3d83ee1c89David Brownell if (HCC_64BIT_ADDR(hcc_params)) { 758083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, 0, &ehci->regs->segment); 759188075211cc75a31190de4a19a084e3d83ee1c89David Brownell#if 0 760188075211cc75a31190de4a19a084e3d83ee1c89David Brownell// this is deeply broken on almost all architectures 7616a35528a8346f6e6fd32ed7e51f04d1fa4ca2c01Yang Hongyang if (!dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64))) 762188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci_info(ehci, "enabled 64bit DMA\n"); 763188075211cc75a31190de4a19a084e3d83ee1c89David Brownell#endif 764188075211cc75a31190de4a19a084e3d83ee1c89David Brownell } 765188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 766188075211cc75a31190de4a19a084e3d83ee1c89David Brownell 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // Philips, Intel, and maybe others need CMD_RUN before the 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // root hub will detect new devices (why?); NEC doesn't 769188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); 770188075211cc75a31190de4a19a084e3d83ee1c89David Brownell ehci->command |= CMD_RUN; 771083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, ehci->command, &ehci->regs->command); 772188075211cc75a31190de4a19a084e3d83ee1c89David Brownell dbg_cmd (ehci, "init", ehci->command); 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Start, enabling full USB 2.0 functionality ... usb 1.1 devices 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are explicitly handed to companion controller(s), so no TT is 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * involved with the root hub. (Except where one is integrated, 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and there's no companion controller unless maybe for USB OTG.) 77932fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern * 78032fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern * Turning on the CF flag will transfer ownership of all ports 78132fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern * from the companions to the EHCI controller. If any of the 78232fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern * companions are in the middle of a port reset at the time, it 78332fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern * could cause trouble. Write-locking ehci_cf_port_reset_rwsem 7841cb52658b4f5b10a9e91f8e1c21ca2bcc1b9a3caDavid Brownell * guarantees that no resets are in progress. After we set CF, 7851cb52658b4f5b10a9e91f8e1c21ca2bcc1b9a3caDavid Brownell * a short delay lets the hardware catch up; new resets shouldn't 7861cb52658b4f5b10a9e91f8e1c21ca2bcc1b9a3caDavid Brownell * be started before the port switching actions could complete. 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 78832fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern down_write(&ehci_cf_port_reset_rwsem); 789e8799906045302776b35b66b16495c575db3b69cAlan Stern ehci->rh_state = EHCI_RH_RUNNING; 790083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); 791083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ 7921cb52658b4f5b10a9e91f8e1c21ca2bcc1b9a3caDavid Brownell msleep(5); 79332fe01985aa2cb2562f6fc171e526e279abe10dbAlan Stern up_write(&ehci_cf_port_reset_rwsem); 794ee4ecb8ac63a5792bec448037d4b82ec4144f94bOliver Neukum ehci->last_periodic_enable = ktime_get_real(); 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 796c430131a02d677aa708f56342c1565edfdacb3c0Jan Andersson temp = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_info (ehci, 7982b70f07343389cb474235def00b021a645ede916Alan Stern "USB %x.%x started, EHCI %x.%02x%s\n", 7997ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f), 8002b70f07343389cb474235def00b021a645ede916Alan Stern temp >> 8, temp & 0xff, 80193f1a47c4af34c4ee014b3d2aae70089b3b69f72David Brownell ignore_oc ? ", overcurrent ignored" : ""); 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 803083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt ehci_writel(ehci, INTR_MASK, 804083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt &ehci->regs->intr_enable); /* Turn On Interrupts */ 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 806188075211cc75a31190de4a19a084e3d83ee1c89David Brownell /* GRR this is run-once init(), being done every time the HC starts. 807188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * So long as they're part of class devices, we can't do it init() 808188075211cc75a31190de4a19a084e3d83ee1c89David Brownell * since the class device isn't created that early. 809188075211cc75a31190de4a19a084e3d83ee1c89David Brownell */ 810188075211cc75a31190de4a19a084e3d83ee1c89David Brownell create_debug_files(ehci); 8114c67045bfc2c14a1d3c6040e80eb4a62946282ddKirill Smelkov create_sysfs_files(ehci); 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8162093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTETstatic int __maybe_unused ehci_setup (struct usb_hcd *hcd) 8172093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET{ 8182093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET struct ehci_hcd *ehci = hcd_to_ehci(hcd); 8192093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET int retval; 8202093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8212093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET ehci->regs = (void __iomem *)ehci->caps + 8222093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); 8232093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET dbg_hcs_params(ehci, "reset"); 8242093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET dbg_hcc_params(ehci, "reset"); 8252093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8262093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET /* cache this readonly data; minimize chip reads */ 8272093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 8282093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8292093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET ehci->sbrn = HCD_USB2; 8302093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8312093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET retval = ehci_halt(ehci); 8322093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET if (retval) 8332093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET return retval; 8342093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8352093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET /* data structure init */ 8362093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET retval = ehci_init(hcd); 8372093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET if (retval) 8382093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET return retval; 8392093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8402093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET ehci_reset(ehci); 8412093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8422093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET return 0; 8432093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET} 8442093c6b49c8f1dc581d8953aca71297d4cace55eMatthieu CASTET 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8477d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t ehci_irq (struct usb_hcd *hcd) 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = hcd_to_ehci (hcd); 85067b2e029743a52670d77864723b4d0d40f7733b5Alan Stern u32 status, masked_status, pcd_status = 0, cmd; 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int bh; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&ehci->lock); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 855083522d76662cda71328df1f3d75e5a9057c7c9fBenjamin Herrenschmidt status = ehci_readl(ehci, &ehci->regs->status); 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* e.g. cardbus physical eject */ 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status == ~(u32) 0) { 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_dbg (ehci, "device removed\n"); 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto dead; 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8632fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern /* 8642fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern * We don't use STS_FLR, but some controllers don't like it to 8652fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern * remain on, so mask it out along with the other status bits. 8662fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern */ 8672fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern masked_status = status & (INTR_MASK | STS_FLR); 8682fbe2bf1fd37f9d99950bd8d8093623cf22cf08bAlan Stern 86969fff59de4d844f8b4c2454c3c23d32b69dcbfd7Alan Stern /* Shared IRQ? */ 870e8799906045302776b35b66b16495c575db3b69cAlan Stern if (!masked_status || unlikely(ehci->rh_state == EHCI_RH_HALTED)) { 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&ehci->lock); 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_NONE; 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear (just) interrupts */ 87667b2e029743a52670d77864723b4d0d40f7733b5Alan Stern ehci_writel(ehci, masked_status, &ehci->regs->status); 877e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell cmd = ehci_readl(ehci, &ehci->regs->command); 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh = 0; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8809776afc8b3dc487557f3f576002520f59be334e6David Brownell#ifdef VERBOSE_DEBUG 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unrequested/ignored: Frame List Rollover */ 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg_status (ehci, "irq", status); 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* INT, ERR, and IAA interrupt rates can be throttled */ 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* normal [4.15.1.2] or error [4.15.1.1] completion */ 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (likely ((status & (STS_INT|STS_ERR)) != 0)) { 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (likely ((status & STS_ERR) == 0)) 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COUNT (ehci->stats.normal); 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COUNT (ehci->stats.error); 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh = 1; 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* complete the unlinking of some qh [4.15.2.3] */ 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & STS_IAA) { 898e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell /* guard against (alleged) silicon errata */ 899e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell if (cmd & CMD_IAAD) { 900e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell ehci_writel(ehci, cmd & ~CMD_IAAD, 901e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell &ehci->regs->command); 902e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell ehci_dbg(ehci, "IAA with IAAD still set?\n"); 903e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell } 904e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell if (ehci->reclaim) { 905e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell COUNT(ehci->stats.reclaim); 906e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell end_unlink_async(ehci); 907e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell } else 908e82cc1288fa57857c6af8c57f3d07096d4bcd9d9David Brownell ehci_dbg(ehci, "IAA with nothing to reclaim?\n"); 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* remote wakeup [4.3.1] */ 912d97cc2f2e938547a47daef29bc10ab38600a3310David Brownell if (status & STS_PCD) { 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned i = HCS_N_PORTS (ehci->hcs_params); 9145a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du u32 ppcd = 0; 915d1b1842c393cf322712b669ec887397b89ed2312David Brownell 916d1b1842c393cf322712b669ec887397b89ed2312David Brownell /* kick root hub later */ 9171d619f128ba911cd3e6d6ad3475f146eb92f5c27Marcelo Tosatti pcd_status = status; 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* resume root hub? */ 920dc75ce9d929aabeb0843a6b1a4ab320e58ba1597Alan Stern if (ehci->rh_state == EHCI_RH_SUSPENDED) 9218c03356a559ced6fa78931f498193f776d67e445Alan Stern usb_hcd_resume_root_hub(hcd); 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9235a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du /* get per-port change detect bits */ 9245a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du if (ehci->has_ppcd) 9255a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du ppcd = status >> 16; 9265a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (i--) { 9285a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du int pstatus; 9295a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du 9305a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du /* leverage per-port change bits feature */ 9315a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du if (ehci->has_ppcd && !(ppcd & (1 << i))) 9325a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du continue; 9335a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du pstatus = ehci_readl(ehci, 9345a9cdf332eae724b11906cb1712e3a662eba32b2Alek Du &ehci->regs->port_status[i]); 935b972b68c396cfa9f8af7e0b314e22705251bc218David Brownell 936b972b68c396cfa9f8af7e0b314e22705251bc218David Brownell if (pstatus & PORT_OWNER) 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 938eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern if (!(test_bit(i, &ehci->suspended_ports) && 939eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern ((pstatus & PORT_RESUME) || 940eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern !(pstatus & PORT_SUSPEND)) && 941eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern (pstatus & PORT_PE) && 942eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern ehci->reset_done[i] == 0)) 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start 20 msec resume signaling from this port, 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and make khubd collect PORT_STAT_C_SUSPEND to 94749d0f078f494b9d81e820a13dd8093a9bfb0b6b1Alan Stern * stop that signaling. Use 5 ms extra for safety, 94849d0f078f494b9d81e820a13dd8093a9bfb0b6b1Alan Stern * like usb_port_resume() does. 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 95049d0f078f494b9d81e820a13dd8093a9bfb0b6b1Alan Stern ehci->reset_done[i] = jiffies + msecs_to_jiffies(25); 951a448e4dc25303fe551e4dafe16c8c7c34f1b9d82Alan Stern set_bit(i, &ehci->resuming_ports); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_dbg (ehci, "port %d remote wakeup\n", i + 1); 95361e8b858abe38c1042135065c59f7d339194b50bAlan Stern mod_timer(&hcd->rh_timer, ehci->reset_done[i]); 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCI errors [4.15.2.4] */ 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely ((status & STS_FATAL) != 0)) { 95967b2e029743a52670d77864723b4d0d40f7733b5Alan Stern ehci_err(ehci, "fatal error\n"); 960eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern dbg_cmd(ehci, "fatal", cmd); 961eafe5b99f2135488b21cf17a262c54997c44f784Alan Stern dbg_status(ehci, "fatal", status); 96267b2e029743a52670d77864723b4d0d40f7733b5Alan Stern ehci_halt(ehci); 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdead: 96467b2e029743a52670d77864723b4d0d40f7733b5Alan Stern ehci_reset(ehci); 96567b2e029743a52670d77864723b4d0d40f7733b5Alan Stern ehci_writel(ehci, 0, &ehci->regs->configured_flag); 96669fff59de4d844f8b4c2454c3c23d32b69dcbfd7Alan Stern usb_hc_died(hcd); 96767b2e029743a52670d77864723b4d0d40f7733b5Alan Stern /* generic layer kills/unlinks all urbs, then 96867b2e029743a52670d77864723b4d0d40f7733b5Alan Stern * uses ehci_stop to clean up the rest 96967b2e029743a52670d77864723b4d0d40f7733b5Alan Stern */ 97067b2e029743a52670d77864723b4d0d40f7733b5Alan Stern bh = 1; 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bh) 9747d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells ehci_work (ehci); 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&ehci->lock); 976d1b1842c393cf322712b669ec887397b89ed2312David Brownell if (pcd_status) 9771d619f128ba911cd3e6d6ad3475f146eb92f5c27Marcelo Tosatti usb_hcd_poll_rh_status(hcd); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * non-error returns are a promise to giveback() the urb later 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we drop ownership so next owner (or urb unlink) can get it 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * urb + dev is in hcd.self.controller.urb_list 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we're queueing TDs onto software and hardware lists 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hcd-specific init for hcpriv hasn't been done yet 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: control, bulk, and interrupt share the same code to append TDs 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to a (possibly active) QH, and the same QH scanning code. 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ehci_urb_enqueue ( 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 99855016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = hcd_to_ehci (hcd); 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head qtd_list; 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&qtd_list); 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 100625b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell case PIPE_CONTROL: 100725b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell /* qh_completions() code doesn't handle all the fault cases 100825b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell * in multi-TD control transfers. Even 1KB is rare anyway. 100925b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell */ 101025b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell if (urb->transfer_buffer_length > (16 * 1024)) 101125b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell return -EMSGSIZE; 101225b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell /* FALLTHROUGH */ 101325b70a8665e9854504b9196c3098dadd37c721aaDavid Brownell /* case PIPE_BULK: */ 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!qh_urb_transaction (ehci, urb, &qtd_list, mem_flags)) 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 1017e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return submit_async(ehci, urb, &qtd_list, mem_flags); 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!qh_urb_transaction (ehci, urb, &qtd_list, mem_flags)) 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 1022e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return intr_submit(ehci, urb, &qtd_list, mem_flags); 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->dev->speed == USB_SPEED_HIGH) 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return itd_submit (ehci, urb, mem_flags); 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sitd_submit (ehci, urb, mem_flags); 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh) 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 103407d29b63ef6b39963ab37818653284d861cf55afAlan Stern /* failfast */ 1035e8799906045302776b35b66b16495c575db3b69cAlan Stern if (ehci->rh_state != EHCI_RH_RUNNING && ehci->reclaim) 103607d29b63ef6b39963ab37818653284d861cf55afAlan Stern end_unlink_async(ehci); 103707d29b63ef6b39963ab37818653284d861cf55afAlan Stern 10383a44494e233c0fdd818d485cfea8998500543589Alan Stern /* If the QH isn't linked then there's nothing we can do 10393a44494e233c0fdd818d485cfea8998500543589Alan Stern * unless we were called during a giveback, in which case 10403a44494e233c0fdd818d485cfea8998500543589Alan Stern * qh_completions() has to deal with it. 10413a44494e233c0fdd818d485cfea8998500543589Alan Stern */ 10423a44494e233c0fdd818d485cfea8998500543589Alan Stern if (qh->qh_state != QH_STATE_LINKED) { 10433a44494e233c0fdd818d485cfea8998500543589Alan Stern if (qh->qh_state == QH_STATE_COMPLETING) 10443a44494e233c0fdd818d485cfea8998500543589Alan Stern qh->needs_rescan = 1; 10453a44494e233c0fdd818d485cfea8998500543589Alan Stern return; 10463a44494e233c0fdd818d485cfea8998500543589Alan Stern } 104707d29b63ef6b39963ab37818653284d861cf55afAlan Stern 104807d29b63ef6b39963ab37818653284d861cf55afAlan Stern /* defer till later if busy */ 10493a44494e233c0fdd818d485cfea8998500543589Alan Stern if (ehci->reclaim) { 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_qh *last; 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (last = ehci->reclaim; 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last->reclaim; 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last = last->reclaim) 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh->qh_state = QH_STATE_UNLINK_WAIT; 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last->reclaim = qh; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 105907d29b63ef6b39963ab37818653284d861cf55afAlan Stern /* start IAA cycle */ 106007d29b63ef6b39963ab37818653284d861cf55afAlan Stern } else 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds start_unlink_async (ehci, qh); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* remove from hardware lists 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * completions normally happen asynchronously 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1068e9df41c5c5899259541dc928872cad4d07b82076Alan Sternstatic int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = hcd_to_ehci (hcd); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_qh *qh; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1073e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&ehci->lock, flags); 1076e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1077e9df41c5c5899259541dc928872cad4d07b82076Alan Stern if (rc) 1078e9df41c5c5899259541dc928872cad4d07b82076Alan Stern goto done; 1079e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_CONTROL: 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh = (struct ehci_qh *) urb->hcpriv; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!qh) 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 108707d29b63ef6b39963ab37818653284d861cf55afAlan Stern switch (qh->qh_state) { 108807d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_LINKED: 108907d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_COMPLETING: 109007d29b63ef6b39963ab37818653284d861cf55afAlan Stern unlink_async(ehci, qh); 109107d29b63ef6b39963ab37818653284d861cf55afAlan Stern break; 109207d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_UNLINK: 109307d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_UNLINK_WAIT: 109407d29b63ef6b39963ab37818653284d861cf55afAlan Stern /* already started */ 109507d29b63ef6b39963ab37818653284d861cf55afAlan Stern break; 109607d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_IDLE: 10977a0f0d951273eee889c2441846842348ebc00a2aAlan Stern /* QH might be waiting for a Clear-TT-Buffer */ 10987a0f0d951273eee889c2441846842348ebc00a2aAlan Stern qh_completions(ehci, qh); 109907d29b63ef6b39963ab37818653284d861cf55afAlan Stern break; 110007d29b63ef6b39963ab37818653284d861cf55afAlan Stern } 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh = (struct ehci_qh *) urb->hcpriv; 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!qh) 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (qh->qh_state) { 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QH_STATE_LINKED: 1109a448c9d8c58ff7d3f8cc2a8f835065460099b22dAlan Stern case QH_STATE_COMPLETING: 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intr_deschedule (ehci, qh); 1111a448c9d8c58ff7d3f8cc2a8f835065460099b22dAlan Stern break; 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QH_STATE_IDLE: 11137d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells qh_completions (ehci, qh); 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_dbg (ehci, "bogus qh %p state %d\n", 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh, qh->qh_state); 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // itd or sitd ... 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // wait till next completion, do it then. 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // completion irqs can wait up to 1024 msec, 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&ehci->lock, flags); 1131e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// bulk qh holds the data toggle 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsehci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep) 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_hcd *ehci = hcd_to_ehci (hcd); 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ehci_qh *qh, *tmp; 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ASSERT: any requests/urbs are being unlinked */ 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ASSERT: nobody can be submitting urbs for this any more */ 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrescan: 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&ehci->lock, flags); 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh = ep->hcpriv; 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!qh) 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* endpoints can be iso streams. for now, we don't 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * accelerate iso completions ... so spin a while. 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11571082f57abfa26590b60c43f503afb24102a37016Clemens Ladisch if (qh->hw == NULL) { 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_vdbg (ehci, "iso delay\n"); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto idle_timeout; 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1162e8799906045302776b35b66b16495c575db3b69cAlan Stern if (ehci->rh_state != EHCI_RH_RUNNING) 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh->qh_state = QH_STATE_IDLE; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (qh->qh_state) { 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QH_STATE_LINKED: 11663a44494e233c0fdd818d485cfea8998500543589Alan Stern case QH_STATE_COMPLETING: 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (tmp = ehci->async->qh_next.qh; 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp && tmp != qh; 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = tmp->qh_next.qh) 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 117102e2c51ba3e80acde600721ea784c3ef84da5ea1Alan Stern /* periodic qh self-unlinks on empty, and a COMPLETING qh 117202e2c51ba3e80acde600721ea784c3ef84da5ea1Alan Stern * may already be unlinked. 117302e2c51ba3e80acde600721ea784c3ef84da5ea1Alan Stern */ 117402e2c51ba3e80acde600721ea784c3ef84da5ea1Alan Stern if (tmp) 117502e2c51ba3e80acde600721ea784c3ef84da5ea1Alan Stern unlink_async(ehci, qh); 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALL THROUGH */ 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QH_STATE_UNLINK: /* wait for hw to finish? */ 117807d29b63ef6b39963ab37818653284d861cf55afAlan Stern case QH_STATE_UNLINK_WAIT: 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsidle_timeout: 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&ehci->lock, flags); 118122c438632850c0d6257b45c90afed0cea6953afcNishanth Aravamudan schedule_timeout_uninterruptible(1); 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto rescan; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QH_STATE_IDLE: /* fully unlinked */ 1184914b701280a76f96890ad63eb0fa99bf204b961cAlan Stern if (qh->clearing_tt) 1185914b701280a76f96890ad63eb0fa99bf204b961cAlan Stern goto idle_timeout; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (list_empty (&qh->qtd_list)) { 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh_put (qh); 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* else FALL THROUGH */ 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* caller was supposed to have unlinked any requests; 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that's not our job. just leak this memory. 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ehci_err (ehci, "qh %p (#%02x) state %d%s\n", 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qh, ep->desc.bEndpointAddress, qh->qh_state, 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&qh->qtd_list) ? "" : "(has tds)"); 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->hcpriv = NULL; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&ehci->lock, flags); 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1205b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Sternstatic void 1206b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Sternehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) 1207b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern{ 1208b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern struct ehci_hcd *ehci = hcd_to_ehci(hcd); 1209b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern struct ehci_qh *qh; 1210b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern int eptype = usb_endpoint_type(&ep->desc); 1211a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern int epnum = usb_endpoint_num(&ep->desc); 1212a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern int is_out = usb_endpoint_dir_out(&ep->desc); 1213a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern unsigned long flags; 1214b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern 1215b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT) 1216b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern return; 1217b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern 1218a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern spin_lock_irqsave(&ehci->lock, flags); 1219b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern qh = ep->hcpriv; 1220b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern 1221b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern /* For Bulk and Interrupt endpoints we maintain the toggle state 1222b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern * in the hardware; the toggle bits in udev aren't used at all. 1223b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern * When an endpoint is reset by usb_clear_halt() we must reset 1224b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern * the toggle bit in the QH. 1225b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern */ 1226b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern if (qh) { 1227a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern usb_settoggle(qh->dev, epnum, is_out, 0); 1228b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern if (!list_empty(&qh->qtd_list)) { 1229b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern WARN_ONCE(1, "clear_halt for a busy endpoint\n"); 12303a44494e233c0fdd818d485cfea8998500543589Alan Stern } else if (qh->qh_state == QH_STATE_LINKED || 12313a44494e233c0fdd818d485cfea8998500543589Alan Stern qh->qh_state == QH_STATE_COMPLETING) { 1232a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern 1233a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern /* The toggle value in the QH can't be updated 1234a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern * while the QH is active. Unlink it now; 1235a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern * re-linking will call qh_refresh(). 1236b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern */ 1237a448c9d8c58ff7d3f8cc2a8f835065460099b22dAlan Stern if (eptype == USB_ENDPOINT_XFER_BULK) 1238a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern unlink_async(ehci, qh); 1239a448c9d8c58ff7d3f8cc2a8f835065460099b22dAlan Stern else 1240a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern intr_deschedule(ehci, qh); 1241b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern } 1242b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern } 1243a455212d19d312f6a99b3a4a86fb79fb91dd76c7Alan Stern spin_unlock_irqrestore(&ehci->lock, flags); 1244b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern} 1245b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern 12467ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porterstatic int ehci_get_frame (struct usb_hcd *hcd) 12477ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter{ 12487ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter struct ehci_hcd *ehci = hcd_to_ehci (hcd); 124968aa95d5d4de31c9348c1628ffa85c805305ebc5Alan Stern return (ehci_read_frame_index(ehci) >> 3) % ehci->periodic_size; 12507ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter} 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12542b70f07343389cb474235def00b021a645ede916Alan SternMODULE_DESCRIPTION(DRIVER_DESC); 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR (DRIVER_AUTHOR); 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE ("GPL"); 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12587ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#ifdef CONFIG_PCI 12597ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#include "ehci-pci.c" 126001cced250722d22d99c2342979490f93ca886521Kumar Gala#define PCI_DRIVER ehci_pci_driver 12617ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#endif 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1263ba02978a48f0117b3d0aced97a30615a5d7412e2Li Yang#ifdef CONFIG_USB_EHCI_FSL 126480cb9aee01245b38325dd84f1359b14a3f01f10dRandy Vinson#include "ehci-fsl.c" 126501cced250722d22d99c2342979490f93ca886521Kumar Gala#define PLATFORM_DRIVER ehci_fsl_driver 126680cb9aee01245b38325dd84f1359b14a3f01f10dRandy Vinson#endif 126780cb9aee01245b38325dd84f1359b14a3f01f10dRandy Vinson 12687e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#ifdef CONFIG_USB_EHCI_MXC 12697e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include "ehci-mxc.c" 12707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#define PLATFORM_DRIVER ehci_mxc_driver 12717e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#endif 12727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 127360b0bf0f11a02a6c288c7a923b2521aa7cfdc6c3Yoshihiro Shimoda#ifdef CONFIG_USB_EHCI_SH 127463c845522263b2da08f70deba760ed0ab51e841dPaul Mundt#include "ehci-sh.c" 127563c845522263b2da08f70deba760ed0ab51e841dPaul Mundt#define PLATFORM_DRIVER ehci_hcd_sh_driver 127663c845522263b2da08f70deba760ed0ab51e841dPaul Mundt#endif 127763c845522263b2da08f70deba760ed0ab51e841dPaul Mundt 12783766386037827fe7064f57f9aec27b3b5e9417aaManuel Lauss#ifdef CONFIG_MIPS_ALCHEMY 127976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse#include "ehci-au1xxx.c" 128001cced250722d22d99c2342979490f93ca886521Kumar Gala#define PLATFORM_DRIVER ehci_hcd_au1xxx_driver 128176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse#endif 128276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 12837f124f4b353672bc150af959910cfc2a9778260aKeshava Munegowda#ifdef CONFIG_USB_EHCI_HCD_OMAP 128454ab2b02ef6a454b4cca969f546d0dd43fec7308Felipe Balbi#include "ehci-omap.c" 128554ab2b02ef6a454b4cca969f546d0dd43fec7308Felipe Balbi#define PLATFORM_DRIVER ehci_hcd_omap_driver 128654ab2b02ef6a454b4cca969f546d0dd43fec7308Felipe Balbi#endif 128754ab2b02ef6a454b4cca969f546d0dd43fec7308Felipe Balbi 1288ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#ifdef CONFIG_PPC_PS3 1289ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#include "ehci-ps3.c" 12907a4eb7fd50d4df99fc1f623e6d90680d9fca3d82Geoff Levand#define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver 1291ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#endif 1292ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand 1293da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef CONFIG_USB_EHCI_HCD_PPC_OF 1294da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#include "ehci-ppc-of.c" 1295da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#define OF_PLATFORM_DRIVER ehci_hcd_ppc_of_driver 1296da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#endif 1297da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak 129808d3c18e6674c5d46e4333a462b1e2e4c4ded1d4Julie Zhu#ifdef CONFIG_XPS_USB_HCD_XILINX 129908d3c18e6674c5d46e4333a462b1e2e4c4ded1d4Julie Zhu#include "ehci-xilinx-of.c" 13001f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver 130108d3c18e6674c5d46e4333a462b1e2e4c4ded1d4Julie Zhu#endif 130208d3c18e6674c5d46e4333a462b1e2e4c4ded1d4Julie Zhu 1303705a752162768fed3e2c26fba5bffdd3a3bd04f2Lennert Buytenhek#ifdef CONFIG_PLAT_ORION 1304e96ffe2f9debd5fdc53144259d9e5faa514736b9Tzachi Perelstein#include "ehci-orion.c" 1305e96ffe2f9debd5fdc53144259d9e5faa514736b9Tzachi Perelstein#define PLATFORM_DRIVER ehci_orion_driver 1306e96ffe2f9debd5fdc53144259d9e5faa514736b9Tzachi Perelstein#endif 1307e96ffe2f9debd5fdc53144259d9e5faa514736b9Tzachi Perelstein 130891bc4d31e81b15aa6e2d075307b8727041f2e2d1Vladimir Barinov#ifdef CONFIG_ARCH_IXP4XX 130991bc4d31e81b15aa6e2d075307b8727041f2e2d1Vladimir Barinov#include "ehci-ixp4xx.c" 131091bc4d31e81b15aa6e2d075307b8727041f2e2d1Vladimir Barinov#define PLATFORM_DRIVER ixp4xx_ehci_driver 131191bc4d31e81b15aa6e2d075307b8727041f2e2d1Vladimir Barinov#endif 131291bc4d31e81b15aa6e2d075307b8727041f2e2d1Vladimir Barinov 1313586dfc8cafc25cf785332fdfe9530f392e26f30dWan ZongShun#ifdef CONFIG_USB_W90X900_EHCI 1314586dfc8cafc25cf785332fdfe9530f392e26f30dWan ZongShun#include "ehci-w90x900.c" 1315586dfc8cafc25cf785332fdfe9530f392e26f30dWan ZongShun#define PLATFORM_DRIVER ehci_hcd_w90x900_driver 1316586dfc8cafc25cf785332fdfe9530f392e26f30dWan ZongShun#endif 1317586dfc8cafc25cf785332fdfe9530f392e26f30dWan ZongShun 1318501c9c0802d9fee05efb300de06c8b3d04f17458Nicolas Ferre#ifdef CONFIG_ARCH_AT91 1319501c9c0802d9fee05efb300de06c8b3d04f17458Nicolas Ferre#include "ehci-atmel.c" 1320501c9c0802d9fee05efb300de06c8b3d04f17458Nicolas Ferre#define PLATFORM_DRIVER ehci_atmel_driver 1321501c9c0802d9fee05efb300de06c8b3d04f17458Nicolas Ferre#endif 1322501c9c0802d9fee05efb300de06c8b3d04f17458Nicolas Ferre 13231643accdaad4625c2877f7ceefa39c1cb3e90117David Daney#ifdef CONFIG_USB_OCTEON_EHCI 13241643accdaad4625c2877f7ceefa39c1cb3e90117David Daney#include "ehci-octeon.c" 13251643accdaad4625c2877f7ceefa39c1cb3e90117David Daney#define PLATFORM_DRIVER ehci_octeon_driver 13261643accdaad4625c2877f7ceefa39c1cb3e90117David Daney#endif 13271643accdaad4625c2877f7ceefa39c1cb3e90117David Daney 1328760efe6910d5743084b586d3d0a3b65aea96fb2fMac Lin#ifdef CONFIG_USB_CNS3XXX_EHCI 1329760efe6910d5743084b586d3d0a3b65aea96fb2fMac Lin#include "ehci-cns3xxx.c" 1330760efe6910d5743084b586d3d0a3b65aea96fb2fMac Lin#define PLATFORM_DRIVER cns3xxx_ehci_driver 1331760efe6910d5743084b586d3d0a3b65aea96fb2fMac Lin#endif 1332760efe6910d5743084b586d3d0a3b65aea96fb2fMac Lin 1333ad78acafeed26f62c9e644f96eecb7c19bd78bb4Alexey Charkov#ifdef CONFIG_ARCH_VT8500 1334ad78acafeed26f62c9e644f96eecb7c19bd78bb4Alexey Charkov#include "ehci-vt8500.c" 1335ad78acafeed26f62c9e644f96eecb7c19bd78bb4Alexey Charkov#define PLATFORM_DRIVER vt8500_ehci_driver 1336ad78acafeed26f62c9e644f96eecb7c19bd78bb4Alexey Charkov#endif 1337ad78acafeed26f62c9e644f96eecb7c19bd78bb4Alexey Charkov 1338c8c38de9d8002578599222296b90696745ac0fe3Deepak Sikri#ifdef CONFIG_PLAT_SPEAR 1339c8c38de9d8002578599222296b90696745ac0fe3Deepak Sikri#include "ehci-spear.c" 1340c8c38de9d8002578599222296b90696745ac0fe3Deepak Sikri#define PLATFORM_DRIVER spear_ehci_hcd_driver 1341c8c38de9d8002578599222296b90696745ac0fe3Deepak Sikri#endif 1342c8c38de9d8002578599222296b90696745ac0fe3Deepak Sikri 1343b0848aea10da186372582f33152efdda43944f26Pavankumar Kondeti#ifdef CONFIG_USB_EHCI_MSM 1344b0848aea10da186372582f33152efdda43944f26Pavankumar Kondeti#include "ehci-msm.c" 1345b0848aea10da186372582f33152efdda43944f26Pavankumar Kondeti#define PLATFORM_DRIVER ehci_msm_driver 1346b0848aea10da186372582f33152efdda43944f26Pavankumar Kondeti#endif 1347b0848aea10da186372582f33152efdda43944f26Pavankumar Kondeti 134822ced6874fc47bb051e7460443e454ca8efc457eAnoop#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP 134922ced6874fc47bb051e7460443e454ca8efc457eAnoop#include "ehci-pmcmsp.c" 135022ced6874fc47bb051e7460443e454ca8efc457eAnoop#define PLATFORM_DRIVER ehci_hcd_msp_driver 135122ced6874fc47bb051e7460443e454ca8efc457eAnoop#endif 135222ced6874fc47bb051e7460443e454ca8efc457eAnoop 135379ad3b5add4a683af02d1b51ccb699d1b01f1fbfBenoit Goby#ifdef CONFIG_USB_EHCI_TEGRA 135479ad3b5add4a683af02d1b51ccb699d1b01f1fbfBenoit Goby#include "ehci-tegra.c" 135579ad3b5add4a683af02d1b51ccb699d1b01f1fbfBenoit Goby#define PLATFORM_DRIVER tegra_ehci_driver 135679ad3b5add4a683af02d1b51ccb699d1b01f1fbfBenoit Goby#endif 135779ad3b5add4a683af02d1b51ccb699d1b01f1fbfBenoit Goby 13581bcc5aa87f043d34522d783154d08173b435fb46Joonyoung Shim#ifdef CONFIG_USB_EHCI_S5P 13591bcc5aa87f043d34522d783154d08173b435fb46Joonyoung Shim#include "ehci-s5p.c" 13601bcc5aa87f043d34522d783154d08173b435fb46Joonyoung Shim#define PLATFORM_DRIVER s5p_ehci_driver 13611bcc5aa87f043d34522d783154d08173b435fb46Joonyoung Shim#endif 13621bcc5aa87f043d34522d783154d08173b435fb46Joonyoung Shim 13639be0392989306361d4a63a06a8ee281efbead548Jan Andersson#ifdef CONFIG_SPARC_LEON 13649be0392989306361d4a63a06a8ee281efbead548Jan Andersson#include "ehci-grlib.c" 13659be0392989306361d4a63a06a8ee281efbead548Jan Andersson#define PLATFORM_DRIVER ehci_grlib_driver 13669be0392989306361d4a63a06a8ee281efbead548Jan Andersson#endif 13679be0392989306361d4a63a06a8ee281efbead548Jan Andersson 13683af5154a869bc278a829bb03e65a709480e821b0Jayachandran C#ifdef CONFIG_CPU_XLR 136923106343db66171c94ae486d2035478ec575b228Jayachandran C#include "ehci-xls.c" 137023106343db66171c94ae486d2035478ec575b228Jayachandran C#define PLATFORM_DRIVER ehci_xls_driver 137123106343db66171c94ae486d2035478ec575b228Jayachandran C#endif 137223106343db66171c94ae486d2035478ec575b228Jayachandran C 13733a082ec9b2f544a81e977cfa259e3f990a995dc8Neil Zhang#ifdef CONFIG_USB_EHCI_MV 13743a082ec9b2f544a81e977cfa259e3f990a995dc8Neil Zhang#include "ehci-mv.c" 13753a082ec9b2f544a81e977cfa259e3f990a995dc8Neil Zhang#define PLATFORM_DRIVER ehci_mv_driver 13763a082ec9b2f544a81e977cfa259e3f990a995dc8Neil Zhang#endif 13773a082ec9b2f544a81e977cfa259e3f990a995dc8Neil Zhang 1378f30cdbcb2e6a7b9cdebe2117a7b623a5b3832a75Kelvin Cheung#ifdef CONFIG_MACH_LOONGSON1 1379f30cdbcb2e6a7b9cdebe2117a7b623a5b3832a75Kelvin Cheung#include "ehci-ls1x.c" 1380f30cdbcb2e6a7b9cdebe2117a7b623a5b3832a75Kelvin Cheung#define PLATFORM_DRIVER ehci_ls1x_driver 1381f30cdbcb2e6a7b9cdebe2117a7b623a5b3832a75Kelvin Cheung#endif 1382f30cdbcb2e6a7b9cdebe2117a7b623a5b3832a75Kelvin Cheung 13837a7a4a592f42d9abf3b6cc40620b3f79fef49246Hauke Mehrtens#ifdef CONFIG_USB_EHCI_HCD_PLATFORM 13847a7a4a592f42d9abf3b6cc40620b3f79fef49246Hauke Mehrtens#include "ehci-platform.c" 13857a7a4a592f42d9abf3b6cc40620b3f79fef49246Hauke Mehrtens#define PLATFORM_DRIVER ehci_platform_driver 13867a7a4a592f42d9abf3b6cc40620b3f79fef49246Hauke Mehrtens#endif 13877a7a4a592f42d9abf3b6cc40620b3f79fef49246Hauke Mehrtens 1388ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ 13891f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \ 13901f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely !defined(XILINX_OF_PLATFORM_DRIVER) 13917ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#error "missing bus glue for ehci-hcd" 13927ff71d6adf81a43505b7cbaa034e4063d3439182Matt Porter#endif 139301cced250722d22d99c2342979490f93ca886521Kumar Gala 139401cced250722d22d99c2342979490f93ca886521Kumar Galastatic int __init ehci_hcd_init(void) 139501cced250722d22d99c2342979490f93ca886521Kumar Gala{ 139601cced250722d22d99c2342979490f93ca886521Kumar Gala int retval = 0; 139701cced250722d22d99c2342979490f93ca886521Kumar Gala 13982b70f07343389cb474235def00b021a645ede916Alan Stern if (usb_disabled()) 13992b70f07343389cb474235def00b021a645ede916Alan Stern return -ENODEV; 14002b70f07343389cb474235def00b021a645ede916Alan Stern 14012b70f07343389cb474235def00b021a645ede916Alan Stern printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name); 14029beeee6584b9aa4f9192055512411484a2a624dfAlan Stern set_bit(USB_EHCI_LOADED, &usb_hcds_loaded); 14039beeee6584b9aa4f9192055512411484a2a624dfAlan Stern if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) || 14049beeee6584b9aa4f9192055512411484a2a624dfAlan Stern test_bit(USB_OHCI_LOADED, &usb_hcds_loaded)) 14059beeee6584b9aa4f9192055512411484a2a624dfAlan Stern printk(KERN_WARNING "Warning! ehci_hcd should always be loaded" 14069beeee6584b9aa4f9192055512411484a2a624dfAlan Stern " before uhci_hcd and ohci_hcd, not after\n"); 14079beeee6584b9aa4f9192055512411484a2a624dfAlan Stern 140801cced250722d22d99c2342979490f93ca886521Kumar Gala pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n", 140901cced250722d22d99c2342979490f93ca886521Kumar Gala hcd_name, 141001cced250722d22d99c2342979490f93ca886521Kumar Gala sizeof(struct ehci_qh), sizeof(struct ehci_qtd), 141101cced250722d22d99c2342979490f93ca886521Kumar Gala sizeof(struct ehci_itd), sizeof(struct ehci_sitd)); 141201cced250722d22d99c2342979490f93ca886521Kumar Gala 1413694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#ifdef DEBUG 141408f4e586b9db4f398af1133a7b7457607539b958Greg Kroah-Hartman ehci_debug_root = debugfs_create_dir("ehci", usb_debug_root); 14159beeee6584b9aa4f9192055512411484a2a624dfAlan Stern if (!ehci_debug_root) { 14169beeee6584b9aa4f9192055512411484a2a624dfAlan Stern retval = -ENOENT; 14179beeee6584b9aa4f9192055512411484a2a624dfAlan Stern goto err_debug; 14189beeee6584b9aa4f9192055512411484a2a624dfAlan Stern } 1419694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#endif 1420694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones 142101cced250722d22d99c2342979490f93ca886521Kumar Gala#ifdef PLATFORM_DRIVER 142201cced250722d22d99c2342979490f93ca886521Kumar Gala retval = platform_driver_register(&PLATFORM_DRIVER); 1423da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak if (retval < 0) 1424da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak goto clean0; 142501cced250722d22d99c2342979490f93ca886521Kumar Gala#endif 142601cced250722d22d99c2342979490f93ca886521Kumar Gala 142701cced250722d22d99c2342979490f93ca886521Kumar Gala#ifdef PCI_DRIVER 142801cced250722d22d99c2342979490f93ca886521Kumar Gala retval = pci_register_driver(&PCI_DRIVER); 1429da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak if (retval < 0) 1430da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak goto clean1; 1431ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#endif 1432ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand 1433ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#ifdef PS3_SYSTEM_BUS_DRIVER 14347a4eb7fd50d4df99fc1f623e6d90680d9fca3d82Geoff Levand retval = ps3_ehci_driver_register(&PS3_SYSTEM_BUS_DRIVER); 1435da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak if (retval < 0) 1436da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak goto clean2; 1437694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#endif 1438da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak 1439da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef OF_PLATFORM_DRIVER 1440d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely retval = platform_driver_register(&OF_PLATFORM_DRIVER); 1441da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak if (retval < 0) 1442da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak goto clean3; 1443da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#endif 14441f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely 14451f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#ifdef XILINX_OF_PLATFORM_DRIVER 1446d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely retval = platform_driver_register(&XILINX_OF_PLATFORM_DRIVER); 14471f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely if (retval < 0) 14481f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely goto clean4; 14491f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#endif 1450da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak return retval; 1451da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak 14521f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#ifdef XILINX_OF_PLATFORM_DRIVER 1453d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely /* platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER); */ 14541f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likelyclean4: 14551f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#endif 1456da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef OF_PLATFORM_DRIVER 1457d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely platform_driver_unregister(&OF_PLATFORM_DRIVER); 1458da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshakclean3: 1459da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#endif 1460da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef PS3_SYSTEM_BUS_DRIVER 1461da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER); 1462da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshakclean2: 1463ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#endif 1464ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#ifdef PCI_DRIVER 1465da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak pci_unregister_driver(&PCI_DRIVER); 1466da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshakclean1: 1467ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#endif 1468da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef PLATFORM_DRIVER 1469da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak platform_driver_unregister(&PLATFORM_DRIVER); 1470da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshakclean0: 1471da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#endif 1472da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef DEBUG 1473da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak debugfs_remove(ehci_debug_root); 1474da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak ehci_debug_root = NULL; 14759beeee6584b9aa4f9192055512411484a2a624dfAlan Sternerr_debug: 1476a9b6148d25f15ddfe9d7a7f3e526fdb64e7cf7daLinus Torvalds#endif 14779beeee6584b9aa4f9192055512411484a2a624dfAlan Stern clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); 147801cced250722d22d99c2342979490f93ca886521Kumar Gala return retval; 147901cced250722d22d99c2342979490f93ca886521Kumar Gala} 148001cced250722d22d99c2342979490f93ca886521Kumar Galamodule_init(ehci_hcd_init); 148101cced250722d22d99c2342979490f93ca886521Kumar Gala 148201cced250722d22d99c2342979490f93ca886521Kumar Galastatic void __exit ehci_hcd_cleanup(void) 148301cced250722d22d99c2342979490f93ca886521Kumar Gala{ 14841f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#ifdef XILINX_OF_PLATFORM_DRIVER 1485d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER); 14861f23b2d98c11fed43c552a5dbd00c793f81a8736Grant Likely#endif 1487da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#ifdef OF_PLATFORM_DRIVER 1488d35fb6417655ebf6de93e2135dc386c3c470f545Grant Likely platform_driver_unregister(&OF_PLATFORM_DRIVER); 1489da0e8fb00b862aa10265f0c64930b432cd44420bValentine Barshak#endif 149001cced250722d22d99c2342979490f93ca886521Kumar Gala#ifdef PLATFORM_DRIVER 149101cced250722d22d99c2342979490f93ca886521Kumar Gala platform_driver_unregister(&PLATFORM_DRIVER); 149201cced250722d22d99c2342979490f93ca886521Kumar Gala#endif 149301cced250722d22d99c2342979490f93ca886521Kumar Gala#ifdef PCI_DRIVER 149401cced250722d22d99c2342979490f93ca886521Kumar Gala pci_unregister_driver(&PCI_DRIVER); 149501cced250722d22d99c2342979490f93ca886521Kumar Gala#endif 1496ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#ifdef PS3_SYSTEM_BUS_DRIVER 14977a4eb7fd50d4df99fc1f623e6d90680d9fca3d82Geoff Levand ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER); 1498ad75a41085d80c8ce5e885962c15779935f8267eGeoff Levand#endif 1499694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#ifdef DEBUG 1500694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones debugfs_remove(ehci_debug_root); 1501694cc2087e26f3f62b9f07c5d563564ed77ef203Tony Jones#endif 15029beeee6584b9aa4f9192055512411484a2a624dfAlan Stern clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); 150301cced250722d22d99c2342979490f93ca886521Kumar Gala} 150401cced250722d22d99c2342979490f93ca886521Kumar Galamodule_exit(ehci_hcd_cleanup); 150501cced250722d22d99c2342979490f93ca886521Kumar Gala 1506