Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/controller/ehci_pci.c
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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: releng/8.4/sys/dev/usb/controller/ehci_pci.c 238135 2012-07-05 15:37:17Z mav $"); 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 96 static device_probe_t ehci_pci_probe; 97 static device_attach_t ehci_pci_attach; 98 static device_detach_t ehci_pci_detach; 99 static usb_take_controller_t ehci_pci_take_controller; 100 101 static const char * 102 ehci_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"); 115 116 case 0x43451002: 117 return "ATI SB200 USB 2.0 controller"; 118 case 0x43731002: 119 return "ATI SB400 USB 2.0 controller"; 120 case 0x43961002: 121 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller"); 122 123 case 0x1e268086: 124 return ("Intel Panther Point USB 2.0 controller"); 125 case 0x1e2d8086: 126 return ("Intel Panther Point USB 2.0 controller"); 127 case 0x25ad8086: 128 return "Intel 6300ESB USB 2.0 controller"; 129 case 0x24cd8086: 130 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 131 case 0x24dd8086: 132 return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 133 case 0x265c8086: 134 return "Intel 82801FB (ICH6) USB 2.0 controller"; 135 case 0x268c8086: 136 return ("Intel 63XXESB USB 2.0 controller"); 137 case 0x27cc8086: 138 return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 139 case 0x28368086: 140 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 141 case 0x283a8086: 142 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 143 case 0x293a8086: 144 return "Intel 82801I (ICH9) USB 2.0 controller"; 145 case 0x293c8086: 146 return "Intel 82801I (ICH9) USB 2.0 controller"; 147 case 0x3a3a8086: 148 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 149 case 0x3a3c8086: 150 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 151 case 0x3b348086: 152 return ("Intel PCH USB 2.0 controller USB-A"); 153 case 0x3b3c8086: 154 return ("Intel PCH USB 2.0 controller USB-B"); 155 156 case 0x00e01033: 157 return ("NEC uPD 720100 USB 2.0 controller"); 158 159 case 0x006810de: 160 return "NVIDIA nForce2 USB 2.0 controller"; 161 case 0x008810de: 162 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 163 case 0x00d810de: 164 return "NVIDIA nForce3 USB 2.0 controller"; 165 case 0x00e810de: 166 return "NVIDIA nForce3 250 USB 2.0 controller"; 167 case 0x005b10de: 168 return "NVIDIA nForce4 USB 2.0 controller"; 169 case 0x036d10de: 170 return "NVIDIA nForce MCP55 USB 2.0 controller"; 171 case 0x03f210de: 172 return "NVIDIA nForce MCP61 USB 2.0 controller"; 173 case 0x0aa610de: 174 return "NVIDIA nForce MCP79 USB 2.0 controller"; 175 case 0x0aa910de: 176 return "NVIDIA nForce MCP79 USB 2.0 controller"; 177 case 0x0aaa10de: 178 return "NVIDIA nForce MCP79 USB 2.0 controller"; 179 180 case 0x15621131: 181 return "Philips ISP156x USB 2.0 controller"; 182 183 case 0x31041106: 184 return ("VIA VT6202 USB 2.0 controller"); 185 186 default: 187 break; 188 } 189 190 if ((pci_get_class(self) == PCIC_SERIALBUS) 191 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 192 && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 193 return ("EHCI (generic) USB 2.0 controller"); 194 } 195 return (NULL); /* dunno */ 196 } 197 198 static int 199 ehci_pci_probe(device_t self) 200 { 201 const char *desc = ehci_pci_match(self); 202 203 if (desc) { 204 device_set_desc(self, desc); 205 return (0); 206 } else { 207 return (ENXIO); 208 } 209 } 210 211 static void 212 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 213 { 214 device_t smbdev; 215 uint32_t val; 216 217 if (is_sb700) { 218 /* Lookup SMBUS PCI device */ 219 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 220 if (smbdev == NULL) 221 return; 222 val = pci_get_revid(smbdev); 223 if (val != 0x3a && val != 0x3b) 224 return; 225 } 226 227 /* 228 * Note: this bit is described as reserved in SB700 229 * Register Reference Guide. 230 */ 231 val = pci_read_config(self, 0x53, 1); 232 if (!(val & 0x8)) { 233 val |= 0x8; 234 pci_write_config(self, 0x53, val, 1); 235 device_printf(self, "AMD SB600/700 quirk applied\n"); 236 } 237 } 238 239 static void 240 ehci_pci_via_quirk(device_t self) 241 { 242 uint32_t val; 243 244 if ((pci_get_device(self) == 0x3104) && 245 ((pci_get_revid(self) & 0xf0) == 0x60)) { 246 /* Correct schedule sleep time to 10us */ 247 val = pci_read_config(self, 0x4b, 1); 248 if (val & 0x20) 249 return; 250 val |= 0x20; 251 pci_write_config(self, 0x4b, val, 1); 252 device_printf(self, "VIA-quirk applied\n"); 253 } 254 } 255 256 static int 257 ehci_pci_attach(device_t self) 258 { 259 ehci_softc_t *sc = device_get_softc(self); 260 int err; 261 int rid; 262 263 /* initialise some bus fields */ 264 sc->sc_bus.parent = self; 265 sc->sc_bus.devices = sc->sc_devices; 266 sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 267 268 /* get all DMA memory */ 269 if (usb_bus_mem_alloc_all(&sc->sc_bus, 270 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 271 return (ENOMEM); 272 } 273 274 pci_enable_busmaster(self); 275 276 switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 277 case PCI_USB_REV_PRE_1_0: 278 case PCI_USB_REV_1_0: 279 case PCI_USB_REV_1_1: 280 /* 281 * NOTE: some EHCI USB controllers have the wrong USB 282 * revision number. It appears those controllers are 283 * fully compliant so we just ignore this value in 284 * some common cases. 285 */ 286 device_printf(self, "pre-2.0 USB revision (ignored)\n"); 287 /* fallthrough */ 288 case PCI_USB_REV_2_0: 289 break; 290 default: 291 /* Quirk for Parallels Desktop 4.0 */ 292 device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 293 break; 294 } 295 296 rid = PCI_CBMEM; 297 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 298 RF_ACTIVE); 299 if (!sc->sc_io_res) { 300 device_printf(self, "Could not map memory\n"); 301 goto error; 302 } 303 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 304 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 305 sc->sc_io_size = rman_get_size(sc->sc_io_res); 306 307 rid = 0; 308 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 309 RF_SHAREABLE | RF_ACTIVE); 310 if (sc->sc_irq_res == NULL) { 311 device_printf(self, "Could not allocate irq\n"); 312 goto error; 313 } 314 sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 315 if (!sc->sc_bus.bdev) { 316 device_printf(self, "Could not add USB device\n"); 317 goto error; 318 } 319 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 320 321 /* 322 * ehci_pci_match will never return NULL if ehci_pci_probe 323 * succeeded 324 */ 325 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 326 switch (pci_get_vendor(self)) { 327 case PCI_EHCI_VENDORID_ACERLABS: 328 sprintf(sc->sc_vendor, "AcerLabs"); 329 break; 330 case PCI_EHCI_VENDORID_AMD: 331 sprintf(sc->sc_vendor, "AMD"); 332 break; 333 case PCI_EHCI_VENDORID_APPLE: 334 sprintf(sc->sc_vendor, "Apple"); 335 break; 336 case PCI_EHCI_VENDORID_ATI: 337 sprintf(sc->sc_vendor, "ATI"); 338 break; 339 case PCI_EHCI_VENDORID_CMDTECH: 340 sprintf(sc->sc_vendor, "CMDTECH"); 341 break; 342 case PCI_EHCI_VENDORID_INTEL: 343 sprintf(sc->sc_vendor, "Intel"); 344 break; 345 case PCI_EHCI_VENDORID_NEC: 346 sprintf(sc->sc_vendor, "NEC"); 347 break; 348 case PCI_EHCI_VENDORID_OPTI: 349 sprintf(sc->sc_vendor, "OPTi"); 350 break; 351 case PCI_EHCI_VENDORID_PHILIPS: 352 sprintf(sc->sc_vendor, "Philips"); 353 break; 354 case PCI_EHCI_VENDORID_SIS: 355 sprintf(sc->sc_vendor, "SiS"); 356 break; 357 case PCI_EHCI_VENDORID_NVIDIA: 358 case PCI_EHCI_VENDORID_NVIDIA2: 359 sprintf(sc->sc_vendor, "nVidia"); 360 break; 361 case PCI_EHCI_VENDORID_VIA: 362 sprintf(sc->sc_vendor, "VIA"); 363 break; 364 default: 365 if (bootverbose) 366 device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 367 pci_get_devid(self)); 368 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 369 } 370 371 #if (__FreeBSD_version >= 700031) 372 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 373 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 374 #else 375 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 376 (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 377 #endif 378 if (err) { 379 device_printf(self, "Could not setup irq, %d\n", err); 380 sc->sc_intr_hdl = NULL; 381 goto error; 382 } 383 ehci_pci_take_controller(self); 384 385 /* Undocumented quirks taken from Linux */ 386 387 switch (pci_get_vendor(self)) { 388 case PCI_EHCI_VENDORID_ATI: 389 /* SB600 and SB700 EHCI quirk */ 390 switch (pci_get_device(self)) { 391 case 0x4386: 392 ehci_pci_ati_quirk(self, 0); 393 break; 394 case 0x4396: 395 ehci_pci_ati_quirk(self, 1); 396 break; 397 default: 398 break; 399 } 400 break; 401 402 case PCI_EHCI_VENDORID_VIA: 403 ehci_pci_via_quirk(self); 404 break; 405 406 default: 407 break; 408 } 409 410 /* Dropped interrupts workaround */ 411 switch (pci_get_vendor(self)) { 412 case PCI_EHCI_VENDORID_ATI: 413 case PCI_EHCI_VENDORID_VIA: 414 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 415 if (bootverbose) 416 device_printf(self, 417 "Dropped interrupts workaround enabled\n"); 418 break; 419 default: 420 break; 421 } 422 423 /* Doorbell feature workaround */ 424 switch (pci_get_vendor(self)) { 425 case PCI_EHCI_VENDORID_NVIDIA: 426 case PCI_EHCI_VENDORID_NVIDIA2: 427 sc->sc_flags |= EHCI_SCFLG_IAADBUG; 428 if (bootverbose) 429 device_printf(self, 430 "Doorbell workaround enabled\n"); 431 break; 432 default: 433 break; 434 } 435 436 err = ehci_init(sc); 437 if (!err) { 438 err = device_probe_and_attach(sc->sc_bus.bdev); 439 } 440 if (err) { 441 device_printf(self, "USB init failed err=%d\n", err); 442 goto error; 443 } 444 return (0); 445 446 error: 447 ehci_pci_detach(self); 448 return (ENXIO); 449 } 450 451 static int 452 ehci_pci_detach(device_t self) 453 { 454 ehci_softc_t *sc = device_get_softc(self); 455 device_t bdev; 456 457 if (sc->sc_bus.bdev) { 458 bdev = sc->sc_bus.bdev; 459 device_detach(bdev); 460 device_delete_child(self, bdev); 461 } 462 /* during module unload there are lots of children leftover */ 463 device_delete_all_children(self); 464 465 pci_disable_busmaster(self); 466 467 if (sc->sc_irq_res && sc->sc_intr_hdl) { 468 /* 469 * only call ehci_detach() after ehci_init() 470 */ 471 ehci_detach(sc); 472 473 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 474 475 if (err) 476 /* XXX or should we panic? */ 477 device_printf(self, "Could not tear down irq, %d\n", 478 err); 479 sc->sc_intr_hdl = NULL; 480 } 481 if (sc->sc_irq_res) { 482 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 483 sc->sc_irq_res = NULL; 484 } 485 if (sc->sc_io_res) { 486 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 487 sc->sc_io_res); 488 sc->sc_io_res = NULL; 489 } 490 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 491 492 return (0); 493 } 494 495 static int 496 ehci_pci_take_controller(device_t self) 497 { 498 ehci_softc_t *sc = device_get_softc(self); 499 uint32_t cparams; 500 uint32_t eec; 501 uint16_t to; 502 uint8_t eecp; 503 uint8_t bios_sem; 504 505 cparams = EREAD4(sc, EHCI_HCCPARAMS); 506 507 /* Synchronise with the BIOS if it owns the controller. */ 508 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 509 eecp = EHCI_EECP_NEXT(eec)) { 510 eec = pci_read_config(self, eecp, 4); 511 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 512 continue; 513 } 514 bios_sem = pci_read_config(self, eecp + 515 EHCI_LEGSUP_BIOS_SEM, 1); 516 if (bios_sem == 0) { 517 continue; 518 } 519 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 520 "to give up control\n"); 521 pci_write_config(self, eecp + 522 EHCI_LEGSUP_OS_SEM, 1, 1); 523 to = 500; 524 while (1) { 525 bios_sem = pci_read_config(self, eecp + 526 EHCI_LEGSUP_BIOS_SEM, 1); 527 if (bios_sem == 0) 528 break; 529 530 if (--to == 0) { 531 device_printf(sc->sc_bus.bdev, 532 "timed out waiting for BIOS\n"); 533 break; 534 } 535 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 536 } 537 } 538 return (0); 539 } 540 541 static device_method_t ehci_pci_methods[] = { 542 /* Device interface */ 543 DEVMETHOD(device_probe, ehci_pci_probe), 544 DEVMETHOD(device_attach, ehci_pci_attach), 545 DEVMETHOD(device_detach, ehci_pci_detach), 546 DEVMETHOD(device_suspend, bus_generic_suspend), 547 DEVMETHOD(device_resume, bus_generic_resume), 548 DEVMETHOD(device_shutdown, bus_generic_shutdown), 549 DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 550 551 DEVMETHOD_END 552 }; 553 554 static driver_t ehci_driver = { 555 .name = "ehci", 556 .methods = ehci_pci_methods, 557 .size = sizeof(struct ehci_softc), 558 }; 559 560 static devclass_t ehci_devclass; 561 562 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 563 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: da860a3bcdbf8a50d31fa024515d6d38
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