1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #define PCI_EHCI_VENDORID_VMWARE 0x15ad 99 #define PCI_EHCI_VENDORID_ZHAOXIN 0x1d17 100 101 static device_probe_t ehci_pci_probe; 102 static device_attach_t ehci_pci_attach; 103 static device_detach_t ehci_pci_detach; 104 static usb_take_controller_t ehci_pci_take_controller; 105 106 static const char * 107 ehci_pci_match(device_t self) 108 { 109 uint32_t device_id = pci_get_devid(self); 110 111 switch (device_id) { 112 case 0x523910b9: 113 return "ALi M5239 USB 2.0 controller"; 114 115 case 0x10227463: 116 return "AMD 8111 USB 2.0 controller"; 117 118 case 0x20951022: 119 return ("AMD CS5536 (Geode) USB 2.0 controller"); 120 case 0x78081022: 121 return ("AMD FCH USB 2.0 controller"); 122 case 0x79081022: 123 return ("AMD FCH USB 2.0 controller"); 124 125 case 0x43451002: 126 return "ATI SB200 USB 2.0 controller"; 127 case 0x43731002: 128 return "ATI SB400 USB 2.0 controller"; 129 case 0x43961002: 130 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller"); 131 132 case 0x0f348086: 133 return ("Intel BayTrail USB 2.0 controller"); 134 case 0x1c268086: 135 return ("Intel Cougar Point USB 2.0 controller"); 136 case 0x1c2d8086: 137 return ("Intel Cougar Point USB 2.0 controller"); 138 case 0x1d268086: 139 return ("Intel Patsburg USB 2.0 controller"); 140 case 0x1d2d8086: 141 return ("Intel Patsburg USB 2.0 controller"); 142 case 0x1e268086: 143 return ("Intel Panther Point USB 2.0 controller"); 144 case 0x1e2d8086: 145 return ("Intel Panther Point USB 2.0 controller"); 146 case 0x1f2c8086: 147 return ("Intel Avoton USB 2.0 controller"); 148 case 0x25ad8086: 149 return "Intel 6300ESB USB 2.0 controller"; 150 case 0x24cd8086: 151 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 152 case 0x24dd8086: 153 return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 154 case 0x265c8086: 155 return "Intel 82801FB (ICH6) USB 2.0 controller"; 156 case 0x268c8086: 157 return ("Intel 63XXESB USB 2.0 controller"); 158 case 0x27cc8086: 159 return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 160 case 0x28368086: 161 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 162 case 0x283a8086: 163 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 164 case 0x293a8086: 165 return "Intel 82801I (ICH9) USB 2.0 controller"; 166 case 0x293c8086: 167 return "Intel 82801I (ICH9) USB 2.0 controller"; 168 case 0x3a3a8086: 169 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A"; 170 case 0x3a3c8086: 171 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B"; 172 case 0x3b348086: 173 return ("Intel PCH USB 2.0 controller USB-A"); 174 case 0x3b3c8086: 175 return ("Intel PCH USB 2.0 controller USB-B"); 176 case 0x8c268086: 177 return ("Intel Lynx Point USB 2.0 controller USB-A"); 178 case 0x8c2d8086: 179 return ("Intel Lynx Point USB 2.0 controller USB-B"); 180 case 0x8ca68086: 181 return ("Intel Wildcat Point USB 2.0 controller USB-A"); 182 case 0x8cad8086: 183 return ("Intel Wildcat Point USB 2.0 controller USB-B"); 184 case 0x8d268086: 185 return ("Intel Wellsburg USB 2.0 controller"); 186 case 0x8d2d8086: 187 return ("Intel Wellsburg USB 2.0 controller"); 188 case 0x9c268086: 189 return ("Intel Lynx Point-LP USB 2.0 controller"); 190 case 0x9ca68086: 191 return ("Intel Wildcat Point-LP USB 2.0 controller"); 192 193 case 0x00e01033: 194 return ("NEC uPD 72010x USB 2.0 controller"); 195 196 case 0x006810de: 197 return "NVIDIA nForce2 USB 2.0 controller"; 198 case 0x008810de: 199 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 200 case 0x00d810de: 201 return "NVIDIA nForce3 USB 2.0 controller"; 202 case 0x00e810de: 203 return "NVIDIA nForce3 250 USB 2.0 controller"; 204 case 0x005b10de: 205 return "NVIDIA nForce CK804 USB 2.0 controller"; 206 case 0x036d10de: 207 return "NVIDIA nForce MCP55 USB 2.0 controller"; 208 case 0x03f210de: 209 return "NVIDIA nForce MCP61 USB 2.0 controller"; 210 case 0x0aa610de: 211 return "NVIDIA nForce MCP79 USB 2.0 controller"; 212 case 0x0aa910de: 213 return "NVIDIA nForce MCP79 USB 2.0 controller"; 214 case 0x0aaa10de: 215 return "NVIDIA nForce MCP79 USB 2.0 controller"; 216 217 case 0x15621131: 218 return "Philips ISP156x USB 2.0 controller"; 219 220 case 0x70021039: 221 return "SiS 968 USB 2.0 controller"; 222 223 case 0x31041106: 224 return ("VIA VT6202 USB 2.0 controller"); 225 226 case 0x077015ad: 227 return ("VMware USB 2.0 controller"); 228 229 case 0x31041d17: 230 return ("Zhaoxin ZX-100/ZX-200/ZX-E USB 2.0 controller"); 231 232 default: 233 break; 234 } 235 236 if ((pci_get_class(self) == PCIC_SERIALBUS) 237 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 238 && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 239 return ("EHCI (generic) USB 2.0 controller"); 240 } 241 return (NULL); /* dunno */ 242 } 243 244 static int 245 ehci_pci_probe(device_t self) 246 { 247 const char *desc = ehci_pci_match(self); 248 249 if (desc) { 250 device_set_desc(self, desc); 251 return (BUS_PROBE_DEFAULT); 252 } else { 253 return (ENXIO); 254 } 255 } 256 257 static void 258 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700) 259 { 260 device_t smbdev; 261 uint32_t val; 262 263 if (is_sb700) { 264 /* Lookup SMBUS PCI device */ 265 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385); 266 if (smbdev == NULL) 267 return; 268 val = pci_get_revid(smbdev); 269 if (val != 0x3a && val != 0x3b) 270 return; 271 } 272 273 /* 274 * Note: this bit is described as reserved in SB700 275 * Register Reference Guide. 276 */ 277 val = pci_read_config(self, 0x53, 1); 278 if (!(val & 0x8)) { 279 val |= 0x8; 280 pci_write_config(self, 0x53, val, 1); 281 device_printf(self, "AMD SB600/700 quirk applied\n"); 282 } 283 } 284 285 static void 286 ehci_pci_via_quirk(device_t self) 287 { 288 uint32_t val; 289 290 if ((pci_get_device(self) == 0x3104) && 291 ((pci_get_revid(self) & 0xf0) == 0x60)) { 292 /* Correct schedule sleep time to 10us */ 293 val = pci_read_config(self, 0x4b, 1); 294 if (val & 0x20) 295 return; 296 val |= 0x20; 297 pci_write_config(self, 0x4b, val, 1); 298 device_printf(self, "VIA-quirk applied\n"); 299 } 300 } 301 302 static int 303 ehci_pci_attach(device_t self) 304 { 305 ehci_softc_t *sc = device_get_softc(self); 306 int err; 307 int rid; 308 309 /* initialise some bus fields */ 310 sc->sc_bus.parent = self; 311 sc->sc_bus.devices = sc->sc_devices; 312 sc->sc_bus.devices_max = EHCI_MAX_DEVICES; 313 sc->sc_bus.dma_bits = 32; 314 315 /* get all DMA memory */ 316 if (usb_bus_mem_alloc_all(&sc->sc_bus, 317 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 318 return (ENOMEM); 319 } 320 321 pci_enable_busmaster(self); 322 323 switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 324 case PCI_USB_REV_PRE_1_0: 325 case PCI_USB_REV_1_0: 326 case PCI_USB_REV_1_1: 327 /* 328 * NOTE: some EHCI USB controllers have the wrong USB 329 * revision number. It appears those controllers are 330 * fully compliant so we just ignore this value in 331 * some common cases. 332 */ 333 device_printf(self, "pre-2.0 USB revision (ignored)\n"); 334 /* fallthrough */ 335 case PCI_USB_REV_2_0: 336 break; 337 default: 338 /* Quirk for Parallels Desktop 4.0 */ 339 device_printf(self, "USB revision is unknown. Assuming v2.0.\n"); 340 break; 341 } 342 343 rid = PCI_CBMEM; 344 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 345 RF_ACTIVE); 346 if (!sc->sc_io_res) { 347 device_printf(self, "Could not map memory\n"); 348 goto error; 349 } 350 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 351 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 352 sc->sc_io_size = rman_get_size(sc->sc_io_res); 353 354 rid = 0; 355 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 356 RF_SHAREABLE | RF_ACTIVE); 357 if (sc->sc_irq_res == NULL) { 358 device_printf(self, "Could not allocate irq\n"); 359 goto error; 360 } 361 sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 362 if (!sc->sc_bus.bdev) { 363 device_printf(self, "Could not add USB device\n"); 364 goto error; 365 } 366 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 367 368 /* 369 * ehci_pci_match will never return NULL if ehci_pci_probe 370 * succeeded 371 */ 372 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 373 switch (pci_get_vendor(self)) { 374 case PCI_EHCI_VENDORID_ACERLABS: 375 sprintf(sc->sc_vendor, "AcerLabs"); 376 break; 377 case PCI_EHCI_VENDORID_AMD: 378 sprintf(sc->sc_vendor, "AMD"); 379 break; 380 case PCI_EHCI_VENDORID_APPLE: 381 sprintf(sc->sc_vendor, "Apple"); 382 break; 383 case PCI_EHCI_VENDORID_ATI: 384 sprintf(sc->sc_vendor, "ATI"); 385 break; 386 case PCI_EHCI_VENDORID_CMDTECH: 387 sprintf(sc->sc_vendor, "CMDTECH"); 388 break; 389 case PCI_EHCI_VENDORID_HYGON: 390 sprintf(sc->sc_vendor, "Hygon"); 391 break; 392 case PCI_EHCI_VENDORID_INTEL: 393 sprintf(sc->sc_vendor, "Intel"); 394 break; 395 case PCI_EHCI_VENDORID_NEC: 396 sprintf(sc->sc_vendor, "NEC"); 397 break; 398 case PCI_EHCI_VENDORID_OPTI: 399 sprintf(sc->sc_vendor, "OPTi"); 400 break; 401 case PCI_EHCI_VENDORID_PHILIPS: 402 sprintf(sc->sc_vendor, "Philips"); 403 break; 404 case PCI_EHCI_VENDORID_SIS: 405 sprintf(sc->sc_vendor, "SiS"); 406 break; 407 case PCI_EHCI_VENDORID_NVIDIA: 408 case PCI_EHCI_VENDORID_NVIDIA2: 409 sprintf(sc->sc_vendor, "nVidia"); 410 break; 411 case PCI_EHCI_VENDORID_VIA: 412 sprintf(sc->sc_vendor, "VIA"); 413 break; 414 case PCI_EHCI_VENDORID_VMWARE: 415 sprintf(sc->sc_vendor, "VMware"); 416 break; 417 case PCI_EHCI_VENDORID_ZHAOXIN: 418 sprintf(sc->sc_vendor, "Zhaoxin"); 419 break; 420 default: 421 if (bootverbose) 422 device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 423 pci_get_devid(self)); 424 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 425 } 426 427 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 428 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl); 429 if (err) { 430 device_printf(self, "Could not setup irq, %d\n", err); 431 sc->sc_intr_hdl = NULL; 432 goto error; 433 } 434 ehci_pci_take_controller(self); 435 436 /* Undocumented quirks taken from Linux */ 437 438 switch (pci_get_vendor(self)) { 439 case PCI_EHCI_VENDORID_ATI: 440 /* SB600 and SB700 EHCI quirk */ 441 switch (pci_get_device(self)) { 442 case 0x4386: 443 ehci_pci_ati_quirk(self, 0); 444 break; 445 case 0x4396: 446 ehci_pci_ati_quirk(self, 1); 447 break; 448 default: 449 break; 450 } 451 break; 452 453 case PCI_EHCI_VENDORID_VIA: 454 ehci_pci_via_quirk(self); 455 break; 456 457 default: 458 break; 459 } 460 461 /* Dropped interrupts workaround */ 462 switch (pci_get_vendor(self)) { 463 case PCI_EHCI_VENDORID_ATI: 464 case PCI_EHCI_VENDORID_VIA: 465 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG; 466 if (bootverbose) 467 device_printf(self, 468 "Dropped interrupts workaround enabled\n"); 469 break; 470 default: 471 break; 472 } 473 474 /* Doorbell feature workaround */ 475 switch (pci_get_vendor(self)) { 476 case PCI_EHCI_VENDORID_NVIDIA: 477 case PCI_EHCI_VENDORID_NVIDIA2: 478 sc->sc_flags |= EHCI_SCFLG_IAADBUG; 479 if (bootverbose) 480 device_printf(self, 481 "Doorbell workaround enabled\n"); 482 break; 483 default: 484 break; 485 } 486 487 err = ehci_init(sc); 488 if (!err) { 489 err = device_probe_and_attach(sc->sc_bus.bdev); 490 } 491 if (err) { 492 device_printf(self, "USB init failed err=%d\n", err); 493 goto error; 494 } 495 return (0); 496 497 error: 498 ehci_pci_detach(self); 499 return (ENXIO); 500 } 501 502 static int 503 ehci_pci_detach(device_t self) 504 { 505 ehci_softc_t *sc = device_get_softc(self); 506 507 /* during module unload there are lots of children leftover */ 508 device_delete_children(self); 509 510 pci_disable_busmaster(self); 511 512 if (sc->sc_irq_res && sc->sc_intr_hdl) { 513 /* 514 * only call ehci_detach() after ehci_init() 515 */ 516 ehci_detach(sc); 517 518 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 519 520 if (err) 521 /* XXX or should we panic? */ 522 device_printf(self, "Could not tear down irq, %d\n", 523 err); 524 sc->sc_intr_hdl = NULL; 525 } 526 if (sc->sc_irq_res) { 527 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 528 sc->sc_irq_res = NULL; 529 } 530 if (sc->sc_io_res) { 531 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 532 sc->sc_io_res); 533 sc->sc_io_res = NULL; 534 } 535 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 536 537 return (0); 538 } 539 540 static int 541 ehci_pci_take_controller(device_t self) 542 { 543 ehci_softc_t *sc = device_get_softc(self); 544 uint32_t cparams; 545 uint32_t eec; 546 uint16_t to; 547 uint8_t eecp; 548 uint8_t bios_sem; 549 550 cparams = EREAD4(sc, EHCI_HCCPARAMS); 551 552 /* Synchronise with the BIOS if it owns the controller. */ 553 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 554 eecp = EHCI_EECP_NEXT(eec)) { 555 eec = pci_read_config(self, eecp, 4); 556 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 557 continue; 558 } 559 bios_sem = pci_read_config(self, eecp + 560 EHCI_LEGSUP_BIOS_SEM, 1); 561 if (bios_sem == 0) { 562 continue; 563 } 564 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 565 "to give up control\n"); 566 pci_write_config(self, eecp + 567 EHCI_LEGSUP_OS_SEM, 1, 1); 568 to = 500; 569 while (1) { 570 bios_sem = pci_read_config(self, eecp + 571 EHCI_LEGSUP_BIOS_SEM, 1); 572 if (bios_sem == 0) 573 break; 574 575 if (--to == 0) { 576 device_printf(sc->sc_bus.bdev, 577 "timed out waiting for BIOS\n"); 578 break; 579 } 580 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */ 581 } 582 } 583 return (0); 584 } 585 586 static device_method_t ehci_pci_methods[] = { 587 /* Device interface */ 588 DEVMETHOD(device_probe, ehci_pci_probe), 589 DEVMETHOD(device_attach, ehci_pci_attach), 590 DEVMETHOD(device_detach, ehci_pci_detach), 591 DEVMETHOD(device_suspend, bus_generic_suspend), 592 DEVMETHOD(device_resume, bus_generic_resume), 593 DEVMETHOD(device_shutdown, bus_generic_shutdown), 594 DEVMETHOD(usb_take_controller, ehci_pci_take_controller), 595 596 DEVMETHOD_END 597 }; 598 599 static driver_t ehci_driver = { 600 .name = "ehci", 601 .methods = ehci_pci_methods, 602 .size = sizeof(struct ehci_softc), 603 }; 604 605 DRIVER_MODULE(ehci, pci, ehci_driver, 0, 0); 606 MODULE_DEPEND(ehci, usb, 1, 1, 1); 607