ehci_pci.c revision 236475
1/*- 2 * Copyright (c) 1998 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Lennart Augustsson (augustss@carlstedt.se) at 7 * Carlstedt Research & Technology. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: stable/9/sys/dev/usb/controller/ehci_pci.c 236475 2012-06-02 19:08:47Z marius $"); 33 34/* 35 * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 36 * 37 * The EHCI 1.0 spec can be found at 38 * http://developer.intel.com/technology/usb/download/ehci-r10.pdf 39 * and the USB 2.0 spec at 40 * http://www.usb.org/developers/docs/usb_20.zip 41 */ 42 43/* The low level controller code for EHCI has been split into 44 * PCI probes and EHCI specific code. This was done to facilitate the 45 * sharing of code between *BSD's 46 */ 47 48#include <sys/stdint.h> 49#include <sys/stddef.h> 50#include <sys/param.h> 51#include <sys/queue.h> 52#include <sys/types.h> 53#include <sys/systm.h> 54#include <sys/kernel.h> 55#include <sys/bus.h> 56#include <sys/module.h> 57#include <sys/lock.h> 58#include <sys/mutex.h> 59#include <sys/condvar.h> 60#include <sys/sysctl.h> 61#include <sys/sx.h> 62#include <sys/unistd.h> 63#include <sys/callout.h> 64#include <sys/malloc.h> 65#include <sys/priv.h> 66 67#include <dev/usb/usb.h> 68#include <dev/usb/usbdi.h> 69 70#include <dev/usb/usb_core.h> 71#include <dev/usb/usb_busdma.h> 72#include <dev/usb/usb_process.h> 73#include <dev/usb/usb_util.h> 74 75#include <dev/usb/usb_controller.h> 76#include <dev/usb/usb_bus.h> 77#include <dev/usb/usb_pci.h> 78#include <dev/usb/controller/ehci.h> 79#include <dev/usb/controller/ehcireg.h> 80#include "usb_if.h" 81 82#define PCI_EHCI_VENDORID_ACERLABS 0x10b9 83#define PCI_EHCI_VENDORID_AMD 0x1022 84#define PCI_EHCI_VENDORID_APPLE 0x106b 85#define PCI_EHCI_VENDORID_ATI 0x1002 86#define PCI_EHCI_VENDORID_CMDTECH 0x1095 87#define PCI_EHCI_VENDORID_INTEL 0x8086 88#define PCI_EHCI_VENDORID_NEC 0x1033 89#define PCI_EHCI_VENDORID_OPTI 0x1045 90#define PCI_EHCI_VENDORID_PHILIPS 0x1131 91#define PCI_EHCI_VENDORID_SIS 0x1039 92#define PCI_EHCI_VENDORID_NVIDIA 0x12D2 93#define PCI_EHCI_VENDORID_NVIDIA2 0x10DE 94#define PCI_EHCI_VENDORID_VIA 0x1106 95 96static device_probe_t ehci_pci_probe; 97static device_attach_t ehci_pci_attach; 98static device_detach_t ehci_pci_detach; 99static usb_take_controller_t ehci_pci_take_controller; 100 101static const char * 102ehci_pci_match(device_t self) 103{ 104 uint32_t device_id = pci_get_devid(self); 105 106 switch (device_id) { 107 case 0x268c8086: 108 return ("Intel 63XXESB USB 2.0 controller"); 109 110 case 0x523910b9: 111 return "ALi M5239 USB 2.0 controller"; 112 113 case 0x10227463: 114 return "AMD 8111 USB 2.0 controller"; 115 116 case 0x20951022: 117 return ("AMD CS5536 (Geode) USB 2.0 controller"); 118 119 case 0x43451002: 120 return "ATI SB200 USB 2.0 controller"; 121 case 0x43731002: 122 return "ATI SB400 USB 2.0 controller"; 123 124 case 0x25ad8086: 125 return "Intel 6300ESB USB 2.0 controller"; 126 case 0x24cd8086: 127 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 128 case 0x24dd8086: 129 return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 130 case 0x265c8086: 131 return "Intel 82801FB (ICH6) USB 2.0 controller"; 132 case 0x27cc8086: 133 return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 134 135 case 0x28368086: 136 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 137 case 0x283a8086: 138 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 139 case 0x293a8086: 140 return "Intel 82801I (ICH9) USB 2.0 controller"; 141 case 0x293c8086: 142 return "Intel 82801I (ICH9) USB 2.0 controller"; 143 case 0x3a3a8086: 144 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 145 case 0x3a3c8086: 146 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 147 case 0x3b348086: 148 return ("Intel PCH USB 2.0 controller USB-A"); 149 case 0x3b3c8086: 150 return ("Intel PCH USB 2.0 controller USB-B"); 151 152 case 0x00e01033: 153 return ("NEC uPD 720100 USB 2.0 controller"); 154 155 case 0x006810de: 156 return "NVIDIA nForce2 USB 2.0 controller"; 157 case 0x008810de: 158 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 159 case 0x00d810de: 160 return "NVIDIA nForce3 USB 2.0 controller"; 161 case 0x00e810de: 162 return "NVIDIA nForce3 250 USB 2.0 controller"; 163 case 0x005b10de: 164 return "NVIDIA nForce4 USB 2.0 controller"; 165 case 0x036d10de: 166 return "NVIDIA nForce MCP55 USB 2.0 controller"; 167 case 0x03f210de: 168 return "NVIDIA nForce MCP61 USB 2.0 controller"; 169 case 0x0aa610de: 170 return "NVIDIA nForce MCP79 USB 2.0 controller"; 171 case 0x0aa910de: 172 return "NVIDIA nForce MCP79 USB 2.0 controller"; 173 case 0x0aaa10de: 174 return "NVIDIA nForce MCP79 USB 2.0 controller"; 175 176 case 0x15621131: 177 return "Philips ISP156x USB 2.0 controller"; 178 179 case 0x31041106: 180 return ("VIA VT6202 USB 2.0 controller"); 181 182 default: 183 break; 184 } 185 186 if ((pci_get_class(self) == PCIC_SERIALBUS) 187 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 188 && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 189 return ("EHCI (generic) USB 2.0 controller"); 190 } 191 return (NULL); /* dunno */ 192} 193 194static int 195ehci_pci_probe(device_t self) 196{ 197 const char *desc = ehci_pci_match(self); 198 199 if (desc) { 200 device_set_desc(self, desc); 201 return (0); 202 } else { 203 return (ENXIO); 204 } 205} 206 207static void 208ehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 209{ 210 device_t smbdev; 211 uint32_t val; 212 213 if (is_sb700) { 214 /* Lookup SMBUS PCI device */ 215 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 216 if (smbdev == NULL) 217 return; 218 val = pci_get_revid(smbdev); 219 if (val != 0x3a && val != 0x3b) 220 return; 221 } 222 223 /* 224 * Note: this bit is described as reserved in SB700 225 * Register Reference Guide. 226 */ 227 val = pci_read_config(self, 0x53, 1); 228 if (!(val & 0x8)) { 229 val |= 0x8; 230 pci_write_config(self, 0x53, val, 1); 231 device_printf(self, "AMD SB600/700 quirk applied\n"); 232 } 233} 234 235static void 236ehci_pci_via_quirk(device_t self) 237{ 238 uint32_t val; 239 240 if ((pci_get_device(self) == 0x3104) && 241 ((pci_get_revid(self) & 0xf0) == 0x60)) { 242 /* Correct schedule sleep time to 10us */ 243 val = pci_read_config(self, 0x4b, 1); 244 if (val & 0x20) 245 return; 246 val |= 0x20; 247 pci_write_config(self, 0x4b, val, 1); 248 device_printf(self, "VIA-quirk applied\n"); 249 } 250} 251 252static int 253ehci_pci_attach(device_t self) 254{ 255 ehci_softc_t *sc = device_get_softc(self); 256 int err; 257 int rid; 258 259 /* initialise some bus fields */ 260 sc->sc_bus.parent = self; 261 sc->sc_bus.devices = sc->sc_devices; 262 sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 263 264 /* get all DMA memory */ 265 if (usb_bus_mem_alloc_all(&sc->sc_bus, 266 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 267 return (ENOMEM); 268 } 269 270 pci_enable_busmaster(self); 271 272 switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 273 case PCI_USB_REV_PRE_1_0: 274 case PCI_USB_REV_1_0: 275 case PCI_USB_REV_1_1: 276 /* 277 * NOTE: some EHCI USB controllers have the wrong USB 278 * revision number. It appears those controllers are 279 * fully compliant so we just ignore this value in 280 * some common cases. 281 */ 282 device_printf(self, "pre-2.0 USB revision (ignored)\n"); 283 /* fallthrough */ 284 case PCI_USB_REV_2_0: 285 break; 286 default: 287 /* Quirk for Parallels Desktop 4.0 */ 288 device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 289 break; 290 } 291 292 rid = PCI_CBMEM; 293 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 294 RF_ACTIVE); 295 if (!sc->sc_io_res) { 296 device_printf(self, "Could not map memory\n"); 297 goto error; 298 } 299 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 300 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 301 sc->sc_io_size = rman_get_size(sc->sc_io_res); 302 303 rid = 0; 304 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 305 RF_SHAREABLE | RF_ACTIVE); 306 if (sc->sc_irq_res == NULL) { 307 device_printf(self, "Could not allocate irq\n"); 308 goto error; 309 } 310 sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 311 if (!sc->sc_bus.bdev) { 312 device_printf(self, "Could not add USB device\n"); 313 goto error; 314 } 315 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 316 317 /* 318 * ehci_pci_match will never return NULL if ehci_pci_probe 319 * succeeded 320 */ 321 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 322 switch (pci_get_vendor(self)) { 323 case PCI_EHCI_VENDORID_ACERLABS: 324 sprintf(sc->sc_vendor, "AcerLabs"); 325 break; 326 case PCI_EHCI_VENDORID_AMD: 327 sprintf(sc->sc_vendor, "AMD"); 328 break; 329 case PCI_EHCI_VENDORID_APPLE: 330 sprintf(sc->sc_vendor, "Apple"); 331 break; 332 case PCI_EHCI_VENDORID_ATI: 333 sprintf(sc->sc_vendor, "ATI"); 334 break; 335 case PCI_EHCI_VENDORID_CMDTECH: 336 sprintf(sc->sc_vendor, "CMDTECH"); 337 break; 338 case PCI_EHCI_VENDORID_INTEL: 339 sprintf(sc->sc_vendor, "Intel"); 340 break; 341 case PCI_EHCI_VENDORID_NEC: 342 sprintf(sc->sc_vendor, "NEC"); 343 break; 344 case PCI_EHCI_VENDORID_OPTI: 345 sprintf(sc->sc_vendor, "OPTi"); 346 break; 347 case PCI_EHCI_VENDORID_PHILIPS: 348 sprintf(sc->sc_vendor, "Philips"); 349 break; 350 case PCI_EHCI_VENDORID_SIS: 351 sprintf(sc->sc_vendor, "SiS"); 352 break; 353 case PCI_EHCI_VENDORID_NVIDIA: 354 case PCI_EHCI_VENDORID_NVIDIA2: 355 sprintf(sc->sc_vendor, "nVidia"); 356 break; 357 case PCI_EHCI_VENDORID_VIA: 358 sprintf(sc->sc_vendor, "VIA"); 359 break; 360 default: 361 if (bootverbose) 362 device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 363 pci_get_devid(self)); 364 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 365 } 366 367#if (__FreeBSD_version >= 700031) 368 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 369 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 370#else 371 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 372 (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 373#endif 374 if (err) { 375 device_printf(self, "Could not setup irq, %d\n", err); 376 sc->sc_intr_hdl = NULL; 377 goto error; 378 } 379 ehci_pci_take_controller(self); 380 381 /* Undocumented quirks taken from Linux */ 382 383 switch (pci_get_vendor(self)) { 384 case PCI_EHCI_VENDORID_ATI: 385 /* SB600 and SB700 EHCI quirk */ 386 switch (pci_get_device(self)) { 387 case 0x4386: 388 ehci_pci_ati_quirk(self, 0); 389 break; 390 case 0x4396: 391 ehci_pci_ati_quirk(self, 1); 392 break; 393 default: 394 break; 395 } 396 break; 397 398 case PCI_EHCI_VENDORID_VIA: 399 ehci_pci_via_quirk(self); 400 break; 401 402 default: 403 break; 404 } 405 406 /* Dropped interrupts workaround */ 407 switch (pci_get_vendor(self)) { 408 case PCI_EHCI_VENDORID_ATI: 409 case PCI_EHCI_VENDORID_VIA: 410 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 411 if (bootverbose) 412 device_printf(self, 413 "Dropped interrupts workaround enabled\n"); 414 break; 415 default: 416 break; 417 } 418 419 /* Doorbell feature workaround */ 420 switch (pci_get_vendor(self)) { 421 case PCI_EHCI_VENDORID_NVIDIA: 422 case PCI_EHCI_VENDORID_NVIDIA2: 423 sc->sc_flags |= EHCI_SCFLG_IAADBUG; 424 if (bootverbose) 425 device_printf(self, 426 "Doorbell workaround enabled\n"); 427 break; 428 default: 429 break; 430 } 431 432 err = ehci_init(sc); 433 if (!err) { 434 err = device_probe_and_attach(sc->sc_bus.bdev); 435 } 436 if (err) { 437 device_printf(self, "USB init failed err=%d\n", err); 438 goto error; 439 } 440 return (0); 441 442error: 443 ehci_pci_detach(self); 444 return (ENXIO); 445} 446 447static int 448ehci_pci_detach(device_t self) 449{ 450 ehci_softc_t *sc = device_get_softc(self); 451 device_t bdev; 452 453 if (sc->sc_bus.bdev) { 454 bdev = sc->sc_bus.bdev; 455 device_detach(bdev); 456 device_delete_child(self, bdev); 457 } 458 /* during module unload there are lots of children leftover */ 459 device_delete_children(self); 460 461 pci_disable_busmaster(self); 462 463 if (sc->sc_irq_res && sc->sc_intr_hdl) { 464 /* 465 * only call ehci_detach() after ehci_init() 466 */ 467 ehci_detach(sc); 468 469 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 470 471 if (err) 472 /* XXX or should we panic? */ 473 device_printf(self, "Could not tear down irq, %d\n", 474 err); 475 sc->sc_intr_hdl = NULL; 476 } 477 if (sc->sc_irq_res) { 478 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 479 sc->sc_irq_res = NULL; 480 } 481 if (sc->sc_io_res) { 482 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 483 sc->sc_io_res); 484 sc->sc_io_res = NULL; 485 } 486 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 487 488 return (0); 489} 490 491static int 492ehci_pci_take_controller(device_t self) 493{ 494 ehci_softc_t *sc = device_get_softc(self); 495 uint32_t cparams; 496 uint32_t eec; 497 uint16_t to; 498 uint8_t eecp; 499 uint8_t bios_sem; 500 501 cparams = EREAD4(sc, EHCI_HCCPARAMS); 502 503 /* Synchronise with the BIOS if it owns the controller. */ 504 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 505 eecp = EHCI_EECP_NEXT(eec)) { 506 eec = pci_read_config(self, eecp, 4); 507 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 508 continue; 509 } 510 bios_sem = pci_read_config(self, eecp + 511 EHCI_LEGSUP_BIOS_SEM, 1); 512 if (bios_sem == 0) { 513 continue; 514 } 515 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 516 "to give up control\n"); 517 pci_write_config(self, eecp + 518 EHCI_LEGSUP_OS_SEM, 1, 1); 519 to = 500; 520 while (1) { 521 bios_sem = pci_read_config(self, eecp + 522 EHCI_LEGSUP_BIOS_SEM, 1); 523 if (bios_sem == 0) 524 break; 525 526 if (--to == 0) { 527 device_printf(sc->sc_bus.bdev, 528 "timed out waiting for BIOS\n"); 529 break; 530 } 531 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 532 } 533 } 534 return (0); 535} 536 537static device_method_t ehci_pci_methods[] = { 538 /* Device interface */ 539 DEVMETHOD(device_probe, ehci_pci_probe), 540 DEVMETHOD(device_attach, ehci_pci_attach), 541 DEVMETHOD(device_detach, ehci_pci_detach), 542 DEVMETHOD(device_suspend, bus_generic_suspend), 543 DEVMETHOD(device_resume, bus_generic_resume), 544 DEVMETHOD(device_shutdown, bus_generic_shutdown), 545 DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 546 547 DEVMETHOD_END 548}; 549 550static driver_t ehci_driver = { 551 .name = "ehci", 552 .methods = ehci_pci_methods, 553 .size = sizeof(struct ehci_softc), 554}; 555 556static devclass_t ehci_devclass; 557 558DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 559MODULE_DEPEND(ehci, usb, 1, 1, 1); 560