1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 3 * 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (augustss@carlstedt.se) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 /* 37 * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 38 * 39 * The EHCI 1.0 spec can be found at 40 * http://developer.intel.com/technology/usb/download/ehci-r10.pdf 41 * and the USB 2.0 spec at 42 * http://www.usb.org/developers/docs/usb_20.zip 43 */ 44 45 /* The low level controller code for EHCI has been split into 46 * PCI probes and EHCI specific code. This was done to facilitate the 47 * sharing of code between *BSD's 48 */ 49 50 #include <sys/stdint.h> 51 #include <sys/stddef.h> 52 #include <sys/param.h> 53 #include <sys/queue.h> 54 #include <sys/types.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/bus.h> 58 #include <sys/module.h> 59 #include <sys/lock.h> 60 #include <sys/mutex.h> 61 #include <sys/condvar.h> 62 #include <sys/sysctl.h> 63 #include <sys/sx.h> 64 #include <sys/unistd.h> 65 #include <sys/callout.h> 66 #include <sys/malloc.h> 67 #include <sys/priv.h> 68 69 #include <dev/usb/usb.h> 70 #include <dev/usb/usbdi.h> 71 72 #include <dev/usb/usb_core.h> 73 #include <dev/usb/usb_busdma.h> 74 #include <dev/usb/usb_process.h> 75 #include <dev/usb/usb_util.h> 76 77 #include <dev/usb/usb_controller.h> 78 #include <dev/usb/usb_bus.h> 79 #include <dev/usb/usb_pci.h> 80 #include <dev/usb/controller/ehci.h> 81 #include <dev/usb/controller/ehcireg.h> 82 #include "usb_if.h" 83 84 #define PCI_EHCI_VENDORID_ACERLABS 0x10b9 85 #define PCI_EHCI_VENDORID_AMD 0x1022 86 #define PCI_EHCI_VENDORID_APPLE 0x106b 87 #define PCI_EHCI_VENDORID_ATI 0x1002 88 #define PCI_EHCI_VENDORID_CMDTECH 0x1095 89 #define PCI_EHCI_VENDORID_HYGON 0x1d94 90 #define PCI_EHCI_VENDORID_INTEL 0x8086 91 #define PCI_EHCI_VENDORID_NEC 0x1033 92 #define PCI_EHCI_VENDORID_OPTI 0x1045 93 #define PCI_EHCI_VENDORID_PHILIPS 0x1131 94 #define PCI_EHCI_VENDORID_SIS 0x1039 95 #define PCI_EHCI_VENDORID_NVIDIA 0x12D2 96 #define PCI_EHCI_VENDORID_NVIDIA2 0x10DE 97 #define PCI_EHCI_VENDORID_VIA 0x1106 98 99 static device_probe_t ehci_pci_probe; 100 static device_attach_t ehci_pci_attach; 101 static device_detach_t ehci_pci_detach; 102 static usb_take_controller_t ehci_pci_take_controller; 103 104 static const char * 105 ehci_pci_match(device_t self) 106 { 107 uint32_t device_id = pci_get_devid(self); 108 109 switch (device_id) { 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 case 0x78081022: 119 return ("AMD FCH USB 2.0 controller"); 120 case 0x79081022: 121 return ("AMD FCH USB 2.0 controller"); 122 123 case 0x43451002: 124 return "ATI SB200 USB 2.0 controller"; 125 case 0x43731002: 126 return "ATI SB400 USB 2.0 controller"; 127 case 0x43961002: 128 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller"); 129 130 case 0x0f348086: 131 return ("Intel BayTrail USB 2.0 controller"); 132 case 0x1c268086: 133 return ("Intel Cougar Point USB 2.0 controller"); 134 case 0x1c2d8086: 135 return ("Intel Cougar Point USB 2.0 controller"); 136 case 0x1d268086: 137 return ("Intel Patsburg USB 2.0 controller"); 138 case 0x1d2d8086: 139 return ("Intel Patsburg USB 2.0 controller"); 140 case 0x1e268086: 141 return ("Intel Panther Point USB 2.0 controller"); 142 case 0x1e2d8086: 143 return ("Intel Panther Point USB 2.0 controller"); 144 case 0x1f2c8086: 145 return ("Intel Avoton USB 2.0 controller"); 146 case 0x25ad8086: 147 return "Intel 6300ESB USB 2.0 controller"; 148 case 0x24cd8086: 149 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 150 case 0x24dd8086: 151 return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 152 case 0x265c8086: 153 return "Intel 82801FB (ICH6) USB 2.0 controller"; 154 case 0x268c8086: 155 return ("Intel 63XXESB USB 2.0 controller"); 156 case 0x27cc8086: 157 return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 158 case 0x28368086: 159 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 160 case 0x283a8086: 161 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 162 case 0x293a8086: 163 return "Intel 82801I (ICH9) USB 2.0 controller"; 164 case 0x293c8086: 165 return "Intel 82801I (ICH9) USB 2.0 controller"; 166 case 0x3a3a8086: 167 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 168 case 0x3a3c8086: 169 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 170 case 0x3b348086: 171 return ("Intel PCH USB 2.0 controller USB-A"); 172 case 0x3b3c8086: 173 return ("Intel PCH USB 2.0 controller USB-B"); 174 case 0x8c268086: 175 return ("Intel Lynx Point USB 2.0 controller USB-A"); 176 case 0x8c2d8086: 177 return ("Intel Lynx Point USB 2.0 controller USB-B"); 178 case 0x8ca68086: 179 return ("Intel Wildcat Point USB 2.0 controller USB-A"); 180 case 0x8cad8086: 181 return ("Intel Wildcat Point USB 2.0 controller USB-B"); 182 case 0x8d268086: 183 return ("Intel Wellsburg USB 2.0 controller"); 184 case 0x8d2d8086: 185 return ("Intel Wellsburg USB 2.0 controller"); 186 case 0x9c268086: 187 return ("Intel Lynx Point-LP USB 2.0 controller"); 188 case 0x9ca68086: 189 return ("Intel Wildcat Point-LP USB 2.0 controller"); 190 191 case 0x00e01033: 192 return ("NEC uPD 72010x USB 2.0 controller"); 193 194 case 0x006810de: 195 return "NVIDIA nForce2 USB 2.0 controller"; 196 case 0x008810de: 197 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 198 case 0x00d810de: 199 return "NVIDIA nForce3 USB 2.0 controller"; 200 case 0x00e810de: 201 return "NVIDIA nForce3 250 USB 2.0 controller"; 202 case 0x005b10de: 203 return "NVIDIA nForce CK804 USB 2.0 controller"; 204 case 0x036d10de: 205 return "NVIDIA nForce MCP55 USB 2.0 controller"; 206 case 0x03f210de: 207 return "NVIDIA nForce MCP61 USB 2.0 controller"; 208 case 0x0aa610de: 209 return "NVIDIA nForce MCP79 USB 2.0 controller"; 210 case 0x0aa910de: 211 return "NVIDIA nForce MCP79 USB 2.0 controller"; 212 case 0x0aaa10de: 213 return "NVIDIA nForce MCP79 USB 2.0 controller"; 214 215 case 0x15621131: 216 return "Philips ISP156x USB 2.0 controller"; 217 218 case 0x70021039: 219 return "SiS 968 USB 2.0 controller"; 220 221 case 0x31041106: 222 return ("VIA VT6202 USB 2.0 controller"); 223 224 default: 225 break; 226 } 227 228 if ((pci_get_class(self) == PCIC_SERIALBUS) 229 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 230 && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 231 return ("EHCI (generic) USB 2.0 controller"); 232 } 233 return (NULL); /* dunno */ 234 } 235 236 static int 237 ehci_pci_probe(device_t self) 238 { 239 const char *desc = ehci_pci_match(self); 240 241 if (desc) { 242 device_set_desc(self, desc); 243 return (BUS_PROBE_DEFAULT); 244 } else { 245 return (ENXIO); 246 } 247 } 248 249 static void 250 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 251 { 252 device_t smbdev; 253 uint32_t val; 254 255 if (is_sb700) { 256 /* Lookup SMBUS PCI device */ 257 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 258 if (smbdev == NULL) 259 return; 260 val = pci_get_revid(smbdev); 261 if (val != 0x3a && val != 0x3b) 262 return; 263 } 264 265 /* 266 * Note: this bit is described as reserved in SB700 267 * Register Reference Guide. 268 */ 269 val = pci_read_config(self, 0x53, 1); 270 if (!(val & 0x8)) { 271 val |= 0x8; 272 pci_write_config(self, 0x53, val, 1); 273 device_printf(self, "AMD SB600/700 quirk applied\n"); 274 } 275 } 276 277 static void 278 ehci_pci_via_quirk(device_t self) 279 { 280 uint32_t val; 281 282 if ((pci_get_device(self) == 0x3104) && 283 ((pci_get_revid(self) & 0xf0) == 0x60)) { 284 /* Correct schedule sleep time to 10us */ 285 val = pci_read_config(self, 0x4b, 1); 286 if (val & 0x20) 287 return; 288 val |= 0x20; 289 pci_write_config(self, 0x4b, val, 1); 290 device_printf(self, "VIA-quirk applied\n"); 291 } 292 } 293 294 static int 295 ehci_pci_attach(device_t self) 296 { 297 ehci_softc_t *sc = device_get_softc(self); 298 int err; 299 int rid; 300 301 /* initialise some bus fields */ 302 sc->sc_bus.parent = self; 303 sc->sc_bus.devices = sc->sc_devices; 304 sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 305 sc->sc_bus.dma_bits = 32; 306 307 /* get all DMA memory */ 308 if (usb_bus_mem_alloc_all(&sc->sc_bus, 309 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 310 return (ENOMEM); 311 } 312 313 pci_enable_busmaster(self); 314 315 switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 316 case PCI_USB_REV_PRE_1_0: 317 case PCI_USB_REV_1_0: 318 case PCI_USB_REV_1_1: 319 /* 320 * NOTE: some EHCI USB controllers have the wrong USB 321 * revision number. It appears those controllers are 322 * fully compliant so we just ignore this value in 323 * some common cases. 324 */ 325 device_printf(self, "pre-2.0 USB revision (ignored)\n"); 326 /* fallthrough */ 327 case PCI_USB_REV_2_0: 328 break; 329 default: 330 /* Quirk for Parallels Desktop 4.0 */ 331 device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 332 break; 333 } 334 335 rid = PCI_CBMEM; 336 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 337 RF_ACTIVE); 338 if (!sc->sc_io_res) { 339 device_printf(self, "Could not map memory\n"); 340 goto error; 341 } 342 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 343 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 344 sc->sc_io_size = rman_get_size(sc->sc_io_res); 345 346 rid = 0; 347 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 348 RF_SHAREABLE | RF_ACTIVE); 349 if (sc->sc_irq_res == NULL) { 350 device_printf(self, "Could not allocate irq\n"); 351 goto error; 352 } 353 sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 354 if (!sc->sc_bus.bdev) { 355 device_printf(self, "Could not add USB device\n"); 356 goto error; 357 } 358 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 359 360 /* 361 * ehci_pci_match will never return NULL if ehci_pci_probe 362 * succeeded 363 */ 364 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 365 switch (pci_get_vendor(self)) { 366 case PCI_EHCI_VENDORID_ACERLABS: 367 sprintf(sc->sc_vendor, "AcerLabs"); 368 break; 369 case PCI_EHCI_VENDORID_AMD: 370 sprintf(sc->sc_vendor, "AMD"); 371 break; 372 case PCI_EHCI_VENDORID_APPLE: 373 sprintf(sc->sc_vendor, "Apple"); 374 break; 375 case PCI_EHCI_VENDORID_ATI: 376 sprintf(sc->sc_vendor, "ATI"); 377 break; 378 case PCI_EHCI_VENDORID_CMDTECH: 379 sprintf(sc->sc_vendor, "CMDTECH"); 380 break; 381 case PCI_EHCI_VENDORID_HYGON: 382 sprintf(sc->sc_vendor, "Hygon"); 383 break; 384 case PCI_EHCI_VENDORID_INTEL: 385 sprintf(sc->sc_vendor, "Intel"); 386 break; 387 case PCI_EHCI_VENDORID_NEC: 388 sprintf(sc->sc_vendor, "NEC"); 389 break; 390 case PCI_EHCI_VENDORID_OPTI: 391 sprintf(sc->sc_vendor, "OPTi"); 392 break; 393 case PCI_EHCI_VENDORID_PHILIPS: 394 sprintf(sc->sc_vendor, "Philips"); 395 break; 396 case PCI_EHCI_VENDORID_SIS: 397 sprintf(sc->sc_vendor, "SiS"); 398 break; 399 case PCI_EHCI_VENDORID_NVIDIA: 400 case PCI_EHCI_VENDORID_NVIDIA2: 401 sprintf(sc->sc_vendor, "nVidia"); 402 break; 403 case PCI_EHCI_VENDORID_VIA: 404 sprintf(sc->sc_vendor, "VIA"); 405 break; 406 default: 407 if (bootverbose) 408 device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 409 pci_get_devid(self)); 410 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 411 } 412 413 #if (__FreeBSD_version >= 700031) 414 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 415 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 416 #else 417 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 418 (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 419 #endif 420 if (err) { 421 device_printf(self, "Could not setup irq, %d\n", err); 422 sc->sc_intr_hdl = NULL; 423 goto error; 424 } 425 ehci_pci_take_controller(self); 426 427 /* Undocumented quirks taken from Linux */ 428 429 switch (pci_get_vendor(self)) { 430 case PCI_EHCI_VENDORID_ATI: 431 /* SB600 and SB700 EHCI quirk */ 432 switch (pci_get_device(self)) { 433 case 0x4386: 434 ehci_pci_ati_quirk(self, 0); 435 break; 436 case 0x4396: 437 ehci_pci_ati_quirk(self, 1); 438 break; 439 default: 440 break; 441 } 442 break; 443 444 case PCI_EHCI_VENDORID_VIA: 445 ehci_pci_via_quirk(self); 446 break; 447 448 default: 449 break; 450 } 451 452 /* Dropped interrupts workaround */ 453 switch (pci_get_vendor(self)) { 454 case PCI_EHCI_VENDORID_ATI: 455 case PCI_EHCI_VENDORID_VIA: 456 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 457 if (bootverbose) 458 device_printf(self, 459 "Dropped interrupts workaround enabled\n"); 460 break; 461 default: 462 break; 463 } 464 465 /* Doorbell feature workaround */ 466 switch (pci_get_vendor(self)) { 467 case PCI_EHCI_VENDORID_NVIDIA: 468 case PCI_EHCI_VENDORID_NVIDIA2: 469 sc->sc_flags |= EHCI_SCFLG_IAADBUG; 470 if (bootverbose) 471 device_printf(self, 472 "Doorbell workaround enabled\n"); 473 break; 474 default: 475 break; 476 } 477 478 err = ehci_init(sc); 479 if (!err) { 480 err = device_probe_and_attach(sc->sc_bus.bdev); 481 } 482 if (err) { 483 device_printf(self, "USB init failed err=%d\n", err); 484 goto error; 485 } 486 return (0); 487 488 error: 489 ehci_pci_detach(self); 490 return (ENXIO); 491 } 492 493 static int 494 ehci_pci_detach(device_t self) 495 { 496 ehci_softc_t *sc = device_get_softc(self); 497 498 /* during module unload there are lots of children leftover */ 499 device_delete_children(self); 500 501 pci_disable_busmaster(self); 502 503 if (sc->sc_irq_res && sc->sc_intr_hdl) { 504 /* 505 * only call ehci_detach() after ehci_init() 506 */ 507 ehci_detach(sc); 508 509 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 510 511 if (err) 512 /* XXX or should we panic? */ 513 device_printf(self, "Could not tear down irq, %d\n", 514 err); 515 sc->sc_intr_hdl = NULL; 516 } 517 if (sc->sc_irq_res) { 518 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 519 sc->sc_irq_res = NULL; 520 } 521 if (sc->sc_io_res) { 522 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 523 sc->sc_io_res); 524 sc->sc_io_res = NULL; 525 } 526 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 527 528 return (0); 529 } 530 531 static int 532 ehci_pci_take_controller(device_t self) 533 { 534 ehci_softc_t *sc = device_get_softc(self); 535 uint32_t cparams; 536 uint32_t eec; 537 uint16_t to; 538 uint8_t eecp; 539 uint8_t bios_sem; 540 541 cparams = EREAD4(sc, EHCI_HCCPARAMS); 542 543 /* Synchronise with the BIOS if it owns the controller. */ 544 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 545 eecp = EHCI_EECP_NEXT(eec)) { 546 eec = pci_read_config(self, eecp, 4); 547 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 548 continue; 549 } 550 bios_sem = pci_read_config(self, eecp + 551 EHCI_LEGSUP_BIOS_SEM, 1); 552 if (bios_sem == 0) { 553 continue; 554 } 555 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 556 "to give up control\n"); 557 pci_write_config(self, eecp + 558 EHCI_LEGSUP_OS_SEM, 1, 1); 559 to = 500; 560 while (1) { 561 bios_sem = pci_read_config(self, eecp + 562 EHCI_LEGSUP_BIOS_SEM, 1); 563 if (bios_sem == 0) 564 break; 565 566 if (--to == 0) { 567 device_printf(sc->sc_bus.bdev, 568 "timed out waiting for BIOS\n"); 569 break; 570 } 571 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 572 } 573 } 574 return (0); 575 } 576 577 static device_method_t ehci_pci_methods[] = { 578 /* Device interface */ 579 DEVMETHOD(device_probe, ehci_pci_probe), 580 DEVMETHOD(device_attach, ehci_pci_attach), 581 DEVMETHOD(device_detach, ehci_pci_detach), 582 DEVMETHOD(device_suspend, bus_generic_suspend), 583 DEVMETHOD(device_resume, bus_generic_resume), 584 DEVMETHOD(device_shutdown, bus_generic_shutdown), 585 DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 586 587 DEVMETHOD_END 588 }; 589 590 static driver_t ehci_driver = { 591 .name = "ehci", 592 .methods = ehci_pci_methods, 593 .size = sizeof(struct ehci_softc), 594 }; 595 596 static devclass_t ehci_devclass; 597 598 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 599 MODULE_DEPEND(ehci, usb, 1, 1, 1); 600