ehci_pci.c revision 308402
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/10/sys/dev/usb/controller/ehci_pci.c 308402 2016-11-07 09:19:04Z hselasky $"); 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 0x523910b9: 108 return "ALi M5239 USB 2.0 controller"; 109 110 case 0x10227463: 111 return "AMD 8111 USB 2.0 controller"; 112 113 case 0x20951022: 114 return ("AMD CS5536 (Geode) USB 2.0 controller"); 115 case 0x78081022: 116 return ("AMD FCH USB 2.0 controller"); 117 118 case 0x43451002: 119 return "ATI SB200 USB 2.0 controller"; 120 case 0x43731002: 121 return "ATI SB400 USB 2.0 controller"; 122 case 0x43961002: 123 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller"); 124 125 case 0x0f348086: 126 return ("Intel BayTrail USB 2.0 controller"); 127 case 0x1d268086: 128 return ("Intel Patsburg USB 2.0 controller"); 129 case 0x1d2d8086: 130 return ("Intel Patsburg USB 2.0 controller"); 131 case 0x1e268086: 132 return ("Intel Panther Point USB 2.0 controller"); 133 case 0x1e2d8086: 134 return ("Intel Panther Point USB 2.0 controller"); 135 case 0x1f2c8086: 136 return ("Intel Avoton USB 2.0 controller"); 137 case 0x25ad8086: 138 return "Intel 6300ESB USB 2.0 controller"; 139 case 0x24cd8086: 140 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 141 case 0x24dd8086: 142 return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 143 case 0x265c8086: 144 return "Intel 82801FB (ICH6) USB 2.0 controller"; 145 case 0x268c8086: 146 return ("Intel 63XXESB USB 2.0 controller"); 147 case 0x27cc8086: 148 return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 149 case 0x28368086: 150 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 151 case 0x283a8086: 152 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 153 case 0x293a8086: 154 return "Intel 82801I (ICH9) USB 2.0 controller"; 155 case 0x293c8086: 156 return "Intel 82801I (ICH9) USB 2.0 controller"; 157 case 0x3a3a8086: 158 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 159 case 0x3a3c8086: 160 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 161 case 0x3b348086: 162 return ("Intel PCH USB 2.0 controller USB-A"); 163 case 0x3b3c8086: 164 return ("Intel PCH USB 2.0 controller USB-B"); 165 case 0x8c268086: 166 return ("Intel Lynx Point USB 2.0 controller USB-A"); 167 case 0x8c2d8086: 168 return ("Intel Lynx Point USB 2.0 controller USB-B"); 169 case 0x8ca68086: 170 return ("Intel Wildcat Point USB 2.0 controller USB-A"); 171 case 0x8cad8086: 172 return ("Intel Wildcat Point USB 2.0 controller USB-B"); 173 case 0x8d268086: 174 return ("Intel Wellsburg USB 2.0 controller"); 175 case 0x8d2d8086: 176 return ("Intel Wellsburg USB 2.0 controller"); 177 case 0x9c268086: 178 return ("Intel Lynx Point LP USB 2.0 controller USB"); 179 180 case 0x00e01033: 181 return ("NEC uPD 72010x USB 2.0 controller"); 182 183 case 0x006810de: 184 return "NVIDIA nForce2 USB 2.0 controller"; 185 case 0x008810de: 186 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 187 case 0x00d810de: 188 return "NVIDIA nForce3 USB 2.0 controller"; 189 case 0x00e810de: 190 return "NVIDIA nForce3 250 USB 2.0 controller"; 191 case 0x005b10de: 192 return "NVIDIA nForce CK804 USB 2.0 controller"; 193 case 0x036d10de: 194 return "NVIDIA nForce MCP55 USB 2.0 controller"; 195 case 0x03f210de: 196 return "NVIDIA nForce MCP61 USB 2.0 controller"; 197 case 0x0aa610de: 198 return "NVIDIA nForce MCP79 USB 2.0 controller"; 199 case 0x0aa910de: 200 return "NVIDIA nForce MCP79 USB 2.0 controller"; 201 case 0x0aaa10de: 202 return "NVIDIA nForce MCP79 USB 2.0 controller"; 203 204 case 0x15621131: 205 return "Philips ISP156x USB 2.0 controller"; 206 207 case 0x31041106: 208 return ("VIA VT6202 USB 2.0 controller"); 209 210 default: 211 break; 212 } 213 214 if ((pci_get_class(self) == PCIC_SERIALBUS) 215 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 216 && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 217 return ("EHCI (generic) USB 2.0 controller"); 218 } 219 return (NULL); /* dunno */ 220} 221 222static int 223ehci_pci_probe(device_t self) 224{ 225 const char *desc = ehci_pci_match(self); 226 227 if (desc) { 228 device_set_desc(self, desc); 229 return (BUS_PROBE_DEFAULT); 230 } else { 231 return (ENXIO); 232 } 233} 234 235static void 236ehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 237{ 238 device_t smbdev; 239 uint32_t val; 240 241 if (is_sb700) { 242 /* Lookup SMBUS PCI device */ 243 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 244 if (smbdev == NULL) 245 return; 246 val = pci_get_revid(smbdev); 247 if (val != 0x3a && val != 0x3b) 248 return; 249 } 250 251 /* 252 * Note: this bit is described as reserved in SB700 253 * Register Reference Guide. 254 */ 255 val = pci_read_config(self, 0x53, 1); 256 if (!(val & 0x8)) { 257 val |= 0x8; 258 pci_write_config(self, 0x53, val, 1); 259 device_printf(self, "AMD SB600/700 quirk applied\n"); 260 } 261} 262 263static void 264ehci_pci_via_quirk(device_t self) 265{ 266 uint32_t val; 267 268 if ((pci_get_device(self) == 0x3104) && 269 ((pci_get_revid(self) & 0xf0) == 0x60)) { 270 /* Correct schedule sleep time to 10us */ 271 val = pci_read_config(self, 0x4b, 1); 272 if (val & 0x20) 273 return; 274 val |= 0x20; 275 pci_write_config(self, 0x4b, val, 1); 276 device_printf(self, "VIA-quirk applied\n"); 277 } 278} 279 280static int 281ehci_pci_attach(device_t self) 282{ 283 ehci_softc_t *sc = device_get_softc(self); 284 int err; 285 int rid; 286 287 /* initialise some bus fields */ 288 sc->sc_bus.parent = self; 289 sc->sc_bus.devices = sc->sc_devices; 290 sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 291 sc->sc_bus.dma_bits = 32; 292 293 /* get all DMA memory */ 294 if (usb_bus_mem_alloc_all(&sc->sc_bus, 295 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 296 return (ENOMEM); 297 } 298 299 pci_enable_busmaster(self); 300 301 switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 302 case PCI_USB_REV_PRE_1_0: 303 case PCI_USB_REV_1_0: 304 case PCI_USB_REV_1_1: 305 /* 306 * NOTE: some EHCI USB controllers have the wrong USB 307 * revision number. It appears those controllers are 308 * fully compliant so we just ignore this value in 309 * some common cases. 310 */ 311 device_printf(self, "pre-2.0 USB revision (ignored)\n"); 312 /* fallthrough */ 313 case PCI_USB_REV_2_0: 314 break; 315 default: 316 /* Quirk for Parallels Desktop 4.0 */ 317 device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 318 break; 319 } 320 321 rid = PCI_CBMEM; 322 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 323 RF_ACTIVE); 324 if (!sc->sc_io_res) { 325 device_printf(self, "Could not map memory\n"); 326 goto error; 327 } 328 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 329 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 330 sc->sc_io_size = rman_get_size(sc->sc_io_res); 331 332 rid = 0; 333 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 334 RF_SHAREABLE | RF_ACTIVE); 335 if (sc->sc_irq_res == NULL) { 336 device_printf(self, "Could not allocate irq\n"); 337 goto error; 338 } 339 sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 340 if (!sc->sc_bus.bdev) { 341 device_printf(self, "Could not add USB device\n"); 342 goto error; 343 } 344 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 345 346 /* 347 * ehci_pci_match will never return NULL if ehci_pci_probe 348 * succeeded 349 */ 350 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 351 switch (pci_get_vendor(self)) { 352 case PCI_EHCI_VENDORID_ACERLABS: 353 sprintf(sc->sc_vendor, "AcerLabs"); 354 break; 355 case PCI_EHCI_VENDORID_AMD: 356 sprintf(sc->sc_vendor, "AMD"); 357 break; 358 case PCI_EHCI_VENDORID_APPLE: 359 sprintf(sc->sc_vendor, "Apple"); 360 break; 361 case PCI_EHCI_VENDORID_ATI: 362 sprintf(sc->sc_vendor, "ATI"); 363 break; 364 case PCI_EHCI_VENDORID_CMDTECH: 365 sprintf(sc->sc_vendor, "CMDTECH"); 366 break; 367 case PCI_EHCI_VENDORID_INTEL: 368 sprintf(sc->sc_vendor, "Intel"); 369 break; 370 case PCI_EHCI_VENDORID_NEC: 371 sprintf(sc->sc_vendor, "NEC"); 372 break; 373 case PCI_EHCI_VENDORID_OPTI: 374 sprintf(sc->sc_vendor, "OPTi"); 375 break; 376 case PCI_EHCI_VENDORID_PHILIPS: 377 sprintf(sc->sc_vendor, "Philips"); 378 break; 379 case PCI_EHCI_VENDORID_SIS: 380 sprintf(sc->sc_vendor, "SiS"); 381 break; 382 case PCI_EHCI_VENDORID_NVIDIA: 383 case PCI_EHCI_VENDORID_NVIDIA2: 384 sprintf(sc->sc_vendor, "nVidia"); 385 break; 386 case PCI_EHCI_VENDORID_VIA: 387 sprintf(sc->sc_vendor, "VIA"); 388 break; 389 default: 390 if (bootverbose) 391 device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 392 pci_get_devid(self)); 393 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 394 } 395 396#if (__FreeBSD_version >= 700031) 397 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 398 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 399#else 400 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 401 (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 402#endif 403 if (err) { 404 device_printf(self, "Could not setup irq, %d\n", err); 405 sc->sc_intr_hdl = NULL; 406 goto error; 407 } 408 ehci_pci_take_controller(self); 409 410 /* Undocumented quirks taken from Linux */ 411 412 switch (pci_get_vendor(self)) { 413 case PCI_EHCI_VENDORID_ATI: 414 /* SB600 and SB700 EHCI quirk */ 415 switch (pci_get_device(self)) { 416 case 0x4386: 417 ehci_pci_ati_quirk(self, 0); 418 break; 419 case 0x4396: 420 ehci_pci_ati_quirk(self, 1); 421 break; 422 default: 423 break; 424 } 425 break; 426 427 case PCI_EHCI_VENDORID_VIA: 428 ehci_pci_via_quirk(self); 429 break; 430 431 default: 432 break; 433 } 434 435 /* Dropped interrupts workaround */ 436 switch (pci_get_vendor(self)) { 437 case PCI_EHCI_VENDORID_ATI: 438 case PCI_EHCI_VENDORID_VIA: 439 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 440 if (bootverbose) 441 device_printf(self, 442 "Dropped interrupts workaround enabled\n"); 443 break; 444 default: 445 break; 446 } 447 448 /* Doorbell feature workaround */ 449 switch (pci_get_vendor(self)) { 450 case PCI_EHCI_VENDORID_NVIDIA: 451 case PCI_EHCI_VENDORID_NVIDIA2: 452 sc->sc_flags |= EHCI_SCFLG_IAADBUG; 453 if (bootverbose) 454 device_printf(self, 455 "Doorbell workaround enabled\n"); 456 break; 457 default: 458 break; 459 } 460 461 err = ehci_init(sc); 462 if (!err) { 463 err = device_probe_and_attach(sc->sc_bus.bdev); 464 } 465 if (err) { 466 device_printf(self, "USB init failed err=%d\n", err); 467 goto error; 468 } 469 return (0); 470 471error: 472 ehci_pci_detach(self); 473 return (ENXIO); 474} 475 476static int 477ehci_pci_detach(device_t self) 478{ 479 ehci_softc_t *sc = device_get_softc(self); 480 481 /* during module unload there are lots of children leftover */ 482 device_delete_children(self); 483 484 pci_disable_busmaster(self); 485 486 if (sc->sc_irq_res && sc->sc_intr_hdl) { 487 /* 488 * only call ehci_detach() after ehci_init() 489 */ 490 ehci_detach(sc); 491 492 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 493 494 if (err) 495 /* XXX or should we panic? */ 496 device_printf(self, "Could not tear down irq, %d\n", 497 err); 498 sc->sc_intr_hdl = NULL; 499 } 500 if (sc->sc_irq_res) { 501 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 502 sc->sc_irq_res = NULL; 503 } 504 if (sc->sc_io_res) { 505 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 506 sc->sc_io_res); 507 sc->sc_io_res = NULL; 508 } 509 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 510 511 return (0); 512} 513 514static int 515ehci_pci_take_controller(device_t self) 516{ 517 ehci_softc_t *sc = device_get_softc(self); 518 uint32_t cparams; 519 uint32_t eec; 520 uint16_t to; 521 uint8_t eecp; 522 uint8_t bios_sem; 523 524 cparams = EREAD4(sc, EHCI_HCCPARAMS); 525 526 /* Synchronise with the BIOS if it owns the controller. */ 527 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 528 eecp = EHCI_EECP_NEXT(eec)) { 529 eec = pci_read_config(self, eecp, 4); 530 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 531 continue; 532 } 533 bios_sem = pci_read_config(self, eecp + 534 EHCI_LEGSUP_BIOS_SEM, 1); 535 if (bios_sem == 0) { 536 continue; 537 } 538 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 539 "to give up control\n"); 540 pci_write_config(self, eecp + 541 EHCI_LEGSUP_OS_SEM, 1, 1); 542 to = 500; 543 while (1) { 544 bios_sem = pci_read_config(self, eecp + 545 EHCI_LEGSUP_BIOS_SEM, 1); 546 if (bios_sem == 0) 547 break; 548 549 if (--to == 0) { 550 device_printf(sc->sc_bus.bdev, 551 "timed out waiting for BIOS\n"); 552 break; 553 } 554 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 555 } 556 } 557 return (0); 558} 559 560static device_method_t ehci_pci_methods[] = { 561 /* Device interface */ 562 DEVMETHOD(device_probe, ehci_pci_probe), 563 DEVMETHOD(device_attach, ehci_pci_attach), 564 DEVMETHOD(device_detach, ehci_pci_detach), 565 DEVMETHOD(device_suspend, bus_generic_suspend), 566 DEVMETHOD(device_resume, bus_generic_resume), 567 DEVMETHOD(device_shutdown, bus_generic_shutdown), 568 DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 569 570 DEVMETHOD_END 571}; 572 573static driver_t ehci_driver = { 574 .name = "ehci", 575 .methods = ehci_pci_methods, 576 .size = sizeof(struct ehci_softc), 577}; 578 579static devclass_t ehci_devclass; 580 581DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 582MODULE_DEPEND(ehci, usb, 1, 1, 1); 583