ehci_pci.c revision 260348
1184610Salfred/*- 2184610Salfred * Copyright (c) 1998 The NetBSD Foundation, Inc. 3184610Salfred * All rights reserved. 4184610Salfred * 5184610Salfred * This code is derived from software contributed to The NetBSD Foundation 6184610Salfred * by Lennart Augustsson (augustss@carlstedt.se) at 7184610Salfred * Carlstedt Research & Technology. 8184610Salfred * 9184610Salfred * Redistribution and use in source and binary forms, with or without 10184610Salfred * modification, are permitted provided that the following conditions 11184610Salfred * are met: 12184610Salfred * 1. Redistributions of source code must retain the above copyright 13184610Salfred * notice, this list of conditions and the following disclaimer. 14184610Salfred * 2. Redistributions in binary form must reproduce the above copyright 15184610Salfred * notice, this list of conditions and the following disclaimer in the 16184610Salfred * documentation and/or other materials provided with the distribution. 17184610Salfred * 18184610Salfred * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19184610Salfred * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20184610Salfred * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21184610Salfred * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22184610Salfred * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23184610Salfred * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24184610Salfred * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25184610Salfred * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26184610Salfred * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27184610Salfred * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28184610Salfred * POSSIBILITY OF SUCH DAMAGE. 29184610Salfred */ 30184610Salfred 31184610Salfred#include <sys/cdefs.h> 32184610Salfred__FBSDID("$FreeBSD: stable/10/sys/dev/usb/controller/ehci_pci.c 260348 2014-01-05 22:49:54Z mav $"); 33184610Salfred 34184610Salfred/* 35184610Salfred * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 36184610Salfred * 37184610Salfred * The EHCI 1.0 spec can be found at 38184610Salfred * http://developer.intel.com/technology/usb/download/ehci-r10.pdf 39184610Salfred * and the USB 2.0 spec at 40184610Salfred * http://www.usb.org/developers/docs/usb_20.zip 41184610Salfred */ 42184610Salfred 43184610Salfred/* The low level controller code for EHCI has been split into 44184610Salfred * PCI probes and EHCI specific code. This was done to facilitate the 45184610Salfred * sharing of code between *BSD's 46184610Salfred */ 47184610Salfred 48194677Sthompsa#include <sys/stdint.h> 49194677Sthompsa#include <sys/stddef.h> 50194677Sthompsa#include <sys/param.h> 51194677Sthompsa#include <sys/queue.h> 52194677Sthompsa#include <sys/types.h> 53194677Sthompsa#include <sys/systm.h> 54194677Sthompsa#include <sys/kernel.h> 55194677Sthompsa#include <sys/bus.h> 56194677Sthompsa#include <sys/module.h> 57194677Sthompsa#include <sys/lock.h> 58194677Sthompsa#include <sys/mutex.h> 59194677Sthompsa#include <sys/condvar.h> 60194677Sthompsa#include <sys/sysctl.h> 61194677Sthompsa#include <sys/sx.h> 62194677Sthompsa#include <sys/unistd.h> 63194677Sthompsa#include <sys/callout.h> 64194677Sthompsa#include <sys/malloc.h> 65194677Sthompsa#include <sys/priv.h> 66194677Sthompsa 67188942Sthompsa#include <dev/usb/usb.h> 68194677Sthompsa#include <dev/usb/usbdi.h> 69184610Salfred 70188942Sthompsa#include <dev/usb/usb_core.h> 71188942Sthompsa#include <dev/usb/usb_busdma.h> 72188942Sthompsa#include <dev/usb/usb_process.h> 73188942Sthompsa#include <dev/usb/usb_util.h> 74184610Salfred 75188942Sthompsa#include <dev/usb/usb_controller.h> 76188942Sthompsa#include <dev/usb/usb_bus.h> 77188942Sthompsa#include <dev/usb/usb_pci.h> 78188942Sthompsa#include <dev/usb/controller/ehci.h> 79198151Sthompsa#include <dev/usb/controller/ehcireg.h> 80228483Shselasky#include "usb_if.h" 81184610Salfred 82184610Salfred#define PCI_EHCI_VENDORID_ACERLABS 0x10b9 83184610Salfred#define PCI_EHCI_VENDORID_AMD 0x1022 84184610Salfred#define PCI_EHCI_VENDORID_APPLE 0x106b 85184610Salfred#define PCI_EHCI_VENDORID_ATI 0x1002 86184610Salfred#define PCI_EHCI_VENDORID_CMDTECH 0x1095 87184610Salfred#define PCI_EHCI_VENDORID_INTEL 0x8086 88184610Salfred#define PCI_EHCI_VENDORID_NEC 0x1033 89184610Salfred#define PCI_EHCI_VENDORID_OPTI 0x1045 90184610Salfred#define PCI_EHCI_VENDORID_PHILIPS 0x1131 91184610Salfred#define PCI_EHCI_VENDORID_SIS 0x1039 92184610Salfred#define PCI_EHCI_VENDORID_NVIDIA 0x12D2 93184610Salfred#define PCI_EHCI_VENDORID_NVIDIA2 0x10DE 94184610Salfred#define PCI_EHCI_VENDORID_VIA 0x1106 95184610Salfred 96184610Salfredstatic device_probe_t ehci_pci_probe; 97184610Salfredstatic device_attach_t ehci_pci_attach; 98184610Salfredstatic device_detach_t ehci_pci_detach; 99228483Shselaskystatic usb_take_controller_t ehci_pci_take_controller; 100184610Salfred 101184610Salfredstatic const char * 102184610Salfredehci_pci_match(device_t self) 103184610Salfred{ 104184610Salfred uint32_t device_id = pci_get_devid(self); 105184610Salfred 106184610Salfred switch (device_id) { 107184610Salfred case 0x523910b9: 108184610Salfred return "ALi M5239 USB 2.0 controller"; 109184610Salfred 110184610Salfred case 0x10227463: 111184610Salfred return "AMD 8111 USB 2.0 controller"; 112184610Salfred 113184610Salfred case 0x20951022: 114184610Salfred return ("AMD CS5536 (Geode) USB 2.0 controller"); 115184610Salfred 116184610Salfred case 0x43451002: 117184610Salfred return "ATI SB200 USB 2.0 controller"; 118184610Salfred case 0x43731002: 119184610Salfred return "ATI SB400 USB 2.0 controller"; 120238015Smav case 0x43961002: 121238015Smav return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller"); 122184610Salfred 123238015Smav case 0x1e268086: 124238015Smav return ("Intel Panther Point USB 2.0 controller"); 125238015Smav case 0x1e2d8086: 126238015Smav return ("Intel Panther Point USB 2.0 controller"); 127260348Smav case 0x1f2c8086: 128260348Smav return ("Intel Avoton USB 2.0 controller"); 129184610Salfred case 0x25ad8086: 130184610Salfred return "Intel 6300ESB USB 2.0 controller"; 131184610Salfred case 0x24cd8086: 132184610Salfred return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 133184610Salfred case 0x24dd8086: 134184610Salfred return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 135184610Salfred case 0x265c8086: 136184610Salfred return "Intel 82801FB (ICH6) USB 2.0 controller"; 137238015Smav case 0x268c8086: 138238015Smav return ("Intel 63XXESB USB 2.0 controller"); 139184610Salfred case 0x27cc8086: 140184610Salfred return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 141184610Salfred case 0x28368086: 142184610Salfred return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 143184610Salfred case 0x283a8086: 144184610Salfred return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 145184610Salfred case 0x293a8086: 146184610Salfred return "Intel 82801I (ICH9) USB 2.0 controller"; 147184610Salfred case 0x293c8086: 148184610Salfred return "Intel 82801I (ICH9) USB 2.0 controller"; 149200087Sthompsa case 0x3a3a8086: 150200305Sthompsa return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 151200087Sthompsa case 0x3a3c8086: 152200305Sthompsa return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 153200822Sthompsa case 0x3b348086: 154200822Sthompsa return ("Intel PCH USB 2.0 controller USB-A"); 155200822Sthompsa case 0x3b3c8086: 156200822Sthompsa return ("Intel PCH USB 2.0 controller USB-B"); 157184610Salfred 158184610Salfred case 0x00e01033: 159184610Salfred return ("NEC uPD 720100 USB 2.0 controller"); 160184610Salfred 161184610Salfred case 0x006810de: 162184610Salfred return "NVIDIA nForce2 USB 2.0 controller"; 163184610Salfred case 0x008810de: 164184610Salfred return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 165184610Salfred case 0x00d810de: 166184610Salfred return "NVIDIA nForce3 USB 2.0 controller"; 167184610Salfred case 0x00e810de: 168184610Salfred return "NVIDIA nForce3 250 USB 2.0 controller"; 169184610Salfred case 0x005b10de: 170254438Shselasky return "NVIDIA nForce CK804 USB 2.0 controller"; 171205802Sthompsa case 0x036d10de: 172205802Sthompsa return "NVIDIA nForce MCP55 USB 2.0 controller"; 173195958Salfred case 0x03f210de: 174195958Salfred return "NVIDIA nForce MCP61 USB 2.0 controller"; 175200822Sthompsa case 0x0aa610de: 176200822Sthompsa return "NVIDIA nForce MCP79 USB 2.0 controller"; 177200822Sthompsa case 0x0aa910de: 178200822Sthompsa return "NVIDIA nForce MCP79 USB 2.0 controller"; 179200822Sthompsa case 0x0aaa10de: 180200822Sthompsa return "NVIDIA nForce MCP79 USB 2.0 controller"; 181184610Salfred 182184610Salfred case 0x15621131: 183184610Salfred return "Philips ISP156x USB 2.0 controller"; 184184610Salfred 185184610Salfred case 0x31041106: 186184610Salfred return ("VIA VT6202 USB 2.0 controller"); 187184610Salfred 188184610Salfred default: 189184610Salfred break; 190184610Salfred } 191184610Salfred 192184610Salfred if ((pci_get_class(self) == PCIC_SERIALBUS) 193184610Salfred && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 194184610Salfred && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 195184610Salfred return ("EHCI (generic) USB 2.0 controller"); 196184610Salfred } 197184610Salfred return (NULL); /* dunno */ 198184610Salfred} 199184610Salfred 200184610Salfredstatic int 201184610Salfredehci_pci_probe(device_t self) 202184610Salfred{ 203184610Salfred const char *desc = ehci_pci_match(self); 204184610Salfred 205184610Salfred if (desc) { 206184610Salfred device_set_desc(self, desc); 207184610Salfred return (0); 208184610Salfred } else { 209184610Salfred return (ENXIO); 210184610Salfred } 211184610Salfred} 212184610Salfred 213197554Sthompsastatic void 214197554Sthompsaehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 215197554Sthompsa{ 216197554Sthompsa device_t smbdev; 217197554Sthompsa uint32_t val; 218197554Sthompsa 219197554Sthompsa if (is_sb700) { 220197554Sthompsa /* Lookup SMBUS PCI device */ 221197554Sthompsa smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 222197554Sthompsa if (smbdev == NULL) 223197554Sthompsa return; 224197554Sthompsa val = pci_get_revid(smbdev); 225197554Sthompsa if (val != 0x3a && val != 0x3b) 226197554Sthompsa return; 227197554Sthompsa } 228197554Sthompsa 229197554Sthompsa /* 230197554Sthompsa * Note: this bit is described as reserved in SB700 231197554Sthompsa * Register Reference Guide. 232197554Sthompsa */ 233197554Sthompsa val = pci_read_config(self, 0x53, 1); 234197554Sthompsa if (!(val & 0x8)) { 235197554Sthompsa val |= 0x8; 236197554Sthompsa pci_write_config(self, 0x53, val, 1); 237197554Sthompsa device_printf(self, "AMD SB600/700 quirk applied\n"); 238197554Sthompsa } 239197554Sthompsa} 240197554Sthompsa 241197554Sthompsastatic void 242197554Sthompsaehci_pci_via_quirk(device_t self) 243197554Sthompsa{ 244197554Sthompsa uint32_t val; 245197554Sthompsa 246197554Sthompsa if ((pci_get_device(self) == 0x3104) && 247197554Sthompsa ((pci_get_revid(self) & 0xf0) == 0x60)) { 248197554Sthompsa /* Correct schedule sleep time to 10us */ 249197554Sthompsa val = pci_read_config(self, 0x4b, 1); 250197554Sthompsa if (val & 0x20) 251197554Sthompsa return; 252236073Smarius val |= 0x20; 253236073Smarius pci_write_config(self, 0x4b, val, 1); 254197554Sthompsa device_printf(self, "VIA-quirk applied\n"); 255197554Sthompsa } 256197554Sthompsa} 257197554Sthompsa 258184610Salfredstatic int 259184610Salfredehci_pci_attach(device_t self) 260184610Salfred{ 261184610Salfred ehci_softc_t *sc = device_get_softc(self); 262184610Salfred int err; 263184610Salfred int rid; 264184610Salfred 265187170Sthompsa /* initialise some bus fields */ 266187170Sthompsa sc->sc_bus.parent = self; 267187170Sthompsa sc->sc_bus.devices = sc->sc_devices; 268187170Sthompsa sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 269187170Sthompsa 270184610Salfred /* get all DMA memory */ 271194228Sthompsa if (usb_bus_mem_alloc_all(&sc->sc_bus, 272184610Salfred USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 273187170Sthompsa return (ENOMEM); 274184610Salfred } 275184610Salfred 276184610Salfred pci_enable_busmaster(self); 277184610Salfred 278184610Salfred switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 279184610Salfred case PCI_USB_REV_PRE_1_0: 280184610Salfred case PCI_USB_REV_1_0: 281184610Salfred case PCI_USB_REV_1_1: 282184610Salfred /* 283184610Salfred * NOTE: some EHCI USB controllers have the wrong USB 284184610Salfred * revision number. It appears those controllers are 285184610Salfred * fully compliant so we just ignore this value in 286184610Salfred * some common cases. 287184610Salfred */ 288184610Salfred device_printf(self, "pre-2.0 USB revision (ignored)\n"); 289184610Salfred /* fallthrough */ 290184610Salfred case PCI_USB_REV_2_0: 291184610Salfred break; 292184610Salfred default: 293187186Sthompsa /* Quirk for Parallels Desktop 4.0 */ 294187186Sthompsa device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 295199057Sthompsa break; 296184610Salfred } 297184610Salfred 298184610Salfred rid = PCI_CBMEM; 299184610Salfred sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 300184610Salfred RF_ACTIVE); 301184610Salfred if (!sc->sc_io_res) { 302184610Salfred device_printf(self, "Could not map memory\n"); 303184610Salfred goto error; 304184610Salfred } 305184610Salfred sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 306184610Salfred sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 307184610Salfred sc->sc_io_size = rman_get_size(sc->sc_io_res); 308184610Salfred 309184610Salfred rid = 0; 310184610Salfred sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 311184610Salfred RF_SHAREABLE | RF_ACTIVE); 312184610Salfred if (sc->sc_irq_res == NULL) { 313184610Salfred device_printf(self, "Could not allocate irq\n"); 314184610Salfred goto error; 315184610Salfred } 316184610Salfred sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 317184610Salfred if (!sc->sc_bus.bdev) { 318184610Salfred device_printf(self, "Could not add USB device\n"); 319184610Salfred goto error; 320184610Salfred } 321184610Salfred device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 322184610Salfred 323184610Salfred /* 324184610Salfred * ehci_pci_match will never return NULL if ehci_pci_probe 325184610Salfred * succeeded 326184610Salfred */ 327184610Salfred device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 328184610Salfred switch (pci_get_vendor(self)) { 329184610Salfred case PCI_EHCI_VENDORID_ACERLABS: 330184610Salfred sprintf(sc->sc_vendor, "AcerLabs"); 331184610Salfred break; 332184610Salfred case PCI_EHCI_VENDORID_AMD: 333184610Salfred sprintf(sc->sc_vendor, "AMD"); 334184610Salfred break; 335184610Salfred case PCI_EHCI_VENDORID_APPLE: 336184610Salfred sprintf(sc->sc_vendor, "Apple"); 337184610Salfred break; 338184610Salfred case PCI_EHCI_VENDORID_ATI: 339184610Salfred sprintf(sc->sc_vendor, "ATI"); 340184610Salfred break; 341184610Salfred case PCI_EHCI_VENDORID_CMDTECH: 342184610Salfred sprintf(sc->sc_vendor, "CMDTECH"); 343184610Salfred break; 344184610Salfred case PCI_EHCI_VENDORID_INTEL: 345184610Salfred sprintf(sc->sc_vendor, "Intel"); 346184610Salfred break; 347184610Salfred case PCI_EHCI_VENDORID_NEC: 348184610Salfred sprintf(sc->sc_vendor, "NEC"); 349184610Salfred break; 350184610Salfred case PCI_EHCI_VENDORID_OPTI: 351184610Salfred sprintf(sc->sc_vendor, "OPTi"); 352184610Salfred break; 353184610Salfred case PCI_EHCI_VENDORID_PHILIPS: 354184610Salfred sprintf(sc->sc_vendor, "Philips"); 355184610Salfred break; 356184610Salfred case PCI_EHCI_VENDORID_SIS: 357184610Salfred sprintf(sc->sc_vendor, "SiS"); 358184610Salfred break; 359184610Salfred case PCI_EHCI_VENDORID_NVIDIA: 360184610Salfred case PCI_EHCI_VENDORID_NVIDIA2: 361184610Salfred sprintf(sc->sc_vendor, "nVidia"); 362184610Salfred break; 363184610Salfred case PCI_EHCI_VENDORID_VIA: 364184610Salfred sprintf(sc->sc_vendor, "VIA"); 365184610Salfred break; 366184610Salfred default: 367184610Salfred if (bootverbose) 368184610Salfred device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 369184610Salfred pci_get_devid(self)); 370184610Salfred sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 371184610Salfred } 372184610Salfred 373184610Salfred#if (__FreeBSD_version >= 700031) 374184610Salfred err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 375190183Sthompsa NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 376184610Salfred#else 377184610Salfred err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 378190183Sthompsa (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 379184610Salfred#endif 380184610Salfred if (err) { 381184610Salfred device_printf(self, "Could not setup irq, %d\n", err); 382184610Salfred sc->sc_intr_hdl = NULL; 383184610Salfred goto error; 384184610Salfred } 385228483Shselasky ehci_pci_take_controller(self); 386197554Sthompsa 387197554Sthompsa /* Undocumented quirks taken from Linux */ 388197554Sthompsa 389197554Sthompsa switch (pci_get_vendor(self)) { 390197554Sthompsa case PCI_EHCI_VENDORID_ATI: 391197554Sthompsa /* SB600 and SB700 EHCI quirk */ 392197554Sthompsa switch (pci_get_device(self)) { 393197554Sthompsa case 0x4386: 394197554Sthompsa ehci_pci_ati_quirk(self, 0); 395197554Sthompsa break; 396197554Sthompsa case 0x4396: 397197554Sthompsa ehci_pci_ati_quirk(self, 1); 398197554Sthompsa break; 399197554Sthompsa default: 400197554Sthompsa break; 401197554Sthompsa } 402197554Sthompsa break; 403197554Sthompsa 404197554Sthompsa case PCI_EHCI_VENDORID_VIA: 405197554Sthompsa ehci_pci_via_quirk(self); 406197554Sthompsa break; 407197554Sthompsa 408197554Sthompsa default: 409197554Sthompsa break; 410197554Sthompsa } 411197554Sthompsa 412199058Sthompsa /* Dropped interrupts workaround */ 413199058Sthompsa switch (pci_get_vendor(self)) { 414199058Sthompsa case PCI_EHCI_VENDORID_ATI: 415199058Sthompsa case PCI_EHCI_VENDORID_VIA: 416199058Sthompsa sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 417199058Sthompsa if (bootverbose) 418199058Sthompsa device_printf(self, 419199058Sthompsa "Dropped interrupts workaround enabled\n"); 420199058Sthompsa break; 421199058Sthompsa default: 422199058Sthompsa break; 423199058Sthompsa } 424199058Sthompsa 425203693Sthompsa /* Doorbell feature workaround */ 426203693Sthompsa switch (pci_get_vendor(self)) { 427203693Sthompsa case PCI_EHCI_VENDORID_NVIDIA: 428203693Sthompsa case PCI_EHCI_VENDORID_NVIDIA2: 429203693Sthompsa sc->sc_flags |= EHCI_SCFLG_IAADBUG; 430203693Sthompsa if (bootverbose) 431203693Sthompsa device_printf(self, 432203693Sthompsa "Doorbell workaround enabled\n"); 433203693Sthompsa break; 434203693Sthompsa default: 435203693Sthompsa break; 436203693Sthompsa } 437203693Sthompsa 438184610Salfred err = ehci_init(sc); 439184610Salfred if (!err) { 440184610Salfred err = device_probe_and_attach(sc->sc_bus.bdev); 441184610Salfred } 442184610Salfred if (err) { 443184610Salfred device_printf(self, "USB init failed err=%d\n", err); 444184610Salfred goto error; 445184610Salfred } 446184610Salfred return (0); 447184610Salfred 448184610Salfrederror: 449184610Salfred ehci_pci_detach(self); 450184610Salfred return (ENXIO); 451184610Salfred} 452184610Salfred 453184610Salfredstatic int 454184610Salfredehci_pci_detach(device_t self) 455184610Salfred{ 456184610Salfred ehci_softc_t *sc = device_get_softc(self); 457184610Salfred device_t bdev; 458184610Salfred 459184610Salfred if (sc->sc_bus.bdev) { 460184610Salfred bdev = sc->sc_bus.bdev; 461184610Salfred device_detach(bdev); 462184610Salfred device_delete_child(self, bdev); 463184610Salfred } 464184610Salfred /* during module unload there are lots of children leftover */ 465227849Shselasky device_delete_children(self); 466184610Salfred 467184610Salfred pci_disable_busmaster(self); 468184610Salfred 469184610Salfred if (sc->sc_irq_res && sc->sc_intr_hdl) { 470184610Salfred /* 471184610Salfred * only call ehci_detach() after ehci_init() 472184610Salfred */ 473184610Salfred ehci_detach(sc); 474184610Salfred 475184610Salfred int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 476184610Salfred 477184610Salfred if (err) 478184610Salfred /* XXX or should we panic? */ 479184610Salfred device_printf(self, "Could not tear down irq, %d\n", 480184610Salfred err); 481184610Salfred sc->sc_intr_hdl = NULL; 482184610Salfred } 483184610Salfred if (sc->sc_irq_res) { 484184610Salfred bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 485184610Salfred sc->sc_irq_res = NULL; 486184610Salfred } 487184610Salfred if (sc->sc_io_res) { 488184610Salfred bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 489184610Salfred sc->sc_io_res); 490184610Salfred sc->sc_io_res = NULL; 491184610Salfred } 492194228Sthompsa usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 493184610Salfred 494184610Salfred return (0); 495184610Salfred} 496184610Salfred 497228483Shselaskystatic int 498228483Shselaskyehci_pci_take_controller(device_t self) 499198501Sthompsa{ 500198501Sthompsa ehci_softc_t *sc = device_get_softc(self); 501198501Sthompsa uint32_t cparams; 502198501Sthompsa uint32_t eec; 503198501Sthompsa uint16_t to; 504198501Sthompsa uint8_t eecp; 505198501Sthompsa uint8_t bios_sem; 506198501Sthompsa 507198501Sthompsa cparams = EREAD4(sc, EHCI_HCCPARAMS); 508198501Sthompsa 509198501Sthompsa /* Synchronise with the BIOS if it owns the controller. */ 510198501Sthompsa for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 511198501Sthompsa eecp = EHCI_EECP_NEXT(eec)) { 512198501Sthompsa eec = pci_read_config(self, eecp, 4); 513198501Sthompsa if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 514198501Sthompsa continue; 515198501Sthompsa } 516198501Sthompsa bios_sem = pci_read_config(self, eecp + 517198501Sthompsa EHCI_LEGSUP_BIOS_SEM, 1); 518198501Sthompsa if (bios_sem == 0) { 519198501Sthompsa continue; 520198501Sthompsa } 521198501Sthompsa device_printf(sc->sc_bus.bdev, "waiting for BIOS " 522198501Sthompsa "to give up control\n"); 523198501Sthompsa pci_write_config(self, eecp + 524198501Sthompsa EHCI_LEGSUP_OS_SEM, 1, 1); 525198501Sthompsa to = 500; 526198501Sthompsa while (1) { 527198501Sthompsa bios_sem = pci_read_config(self, eecp + 528198501Sthompsa EHCI_LEGSUP_BIOS_SEM, 1); 529198501Sthompsa if (bios_sem == 0) 530198501Sthompsa break; 531198501Sthompsa 532198501Sthompsa if (--to == 0) { 533198501Sthompsa device_printf(sc->sc_bus.bdev, 534198501Sthompsa "timed out waiting for BIOS\n"); 535198501Sthompsa break; 536198501Sthompsa } 537198501Sthompsa usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 538198501Sthompsa } 539198501Sthompsa } 540228483Shselasky return (0); 541198501Sthompsa} 542198501Sthompsa 543228483Shselaskystatic device_method_t ehci_pci_methods[] = { 544228483Shselasky /* Device interface */ 545228483Shselasky DEVMETHOD(device_probe, ehci_pci_probe), 546228483Shselasky DEVMETHOD(device_attach, ehci_pci_attach), 547228483Shselasky DEVMETHOD(device_detach, ehci_pci_detach), 548228483Shselasky DEVMETHOD(device_suspend, bus_generic_suspend), 549228483Shselasky DEVMETHOD(device_resume, bus_generic_resume), 550228483Shselasky DEVMETHOD(device_shutdown, bus_generic_shutdown), 551228483Shselasky DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 552228483Shselasky 553228483Shselasky DEVMETHOD_END 554228483Shselasky}; 555228483Shselasky 556228483Shselaskystatic driver_t ehci_driver = { 557184610Salfred .name = "ehci", 558228483Shselasky .methods = ehci_pci_methods, 559184610Salfred .size = sizeof(struct ehci_softc), 560184610Salfred}; 561184610Salfred 562184610Salfredstatic devclass_t ehci_devclass; 563184610Salfred 564184610SalfredDRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 565188942SthompsaMODULE_DEPEND(ehci, usb, 1, 1, 1); 566