64 65/* function prototypes */ 66 67static device_probe_t usb_probe; 68static device_attach_t usb_attach; 69static device_detach_t usb_detach; 70 71static void usb_attach_sub(device_t, struct usb_bus *); 72 73/* static variables */ 74 75#ifdef USB_DEBUG 76static int usb_ctrl_debug = 0; 77 78SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller"); 79SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0, 80 "Debug level"); 81#endif 82 83static int usb_no_boot_wait = 0; 84TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait); 85SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RDTUN, &usb_no_boot_wait, 0, 86 "No device enumerate waiting at boot."); 87 88static devclass_t usb_devclass; 89 90static device_method_t usb_methods[] = { 91 DEVMETHOD(device_probe, usb_probe), 92 DEVMETHOD(device_attach, usb_attach), 93 DEVMETHOD(device_detach, usb_detach), 94 DEVMETHOD(device_suspend, bus_generic_suspend), 95 DEVMETHOD(device_resume, bus_generic_resume), 96 DEVMETHOD(device_shutdown, bus_generic_shutdown), 97 {0, 0} 98}; 99 100static driver_t usb_driver = { 101 .name = "usbus", 102 .methods = usb_methods, 103 .size = 0, 104}; 105 106/* Host Only Drivers */ 107DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0); 108DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0); 109DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0); 110DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0); 111 112/* Device Only Drivers */ 113DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0); 114DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0); 115DRIVER_MODULE(usbus, uss820, usb_driver, usb_devclass, 0, 0); 116 117/*------------------------------------------------------------------------* 118 * usb_probe 119 * 120 * This function is called from "{ehci,ohci,uhci}_pci_attach()". 121 *------------------------------------------------------------------------*/ 122static int 123usb_probe(device_t dev) 124{ 125 DPRINTF("\n"); 126 return (0); 127} 128 129static void 130usb_root_mount_rel(struct usb_bus *bus) 131{ 132 if (bus->bus_roothold != NULL) { 133 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); 134 root_mount_rel(bus->bus_roothold); 135 bus->bus_roothold = NULL; 136 } 137} 138 139/*------------------------------------------------------------------------* 140 * usb_attach 141 *------------------------------------------------------------------------*/ 142static int 143usb_attach(device_t dev) 144{ 145 struct usb_bus *bus = device_get_ivars(dev); 146 147 DPRINTF("\n"); 148 149 if (bus == NULL) { 150 device_printf(dev, "USB device has no ivars\n"); 151 return (ENXIO); 152 } 153 154 if (usb_no_boot_wait == 0) { 155 /* delay vfs_mountroot until the bus is explored */ 156 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); 157 } 158 159 usb_attach_sub(dev, bus); 160 161 return (0); /* return success */ 162} 163 164/*------------------------------------------------------------------------* 165 * usb_detach 166 *------------------------------------------------------------------------*/ 167static int 168usb_detach(device_t dev) 169{ 170 struct usb_bus *bus = device_get_softc(dev); 171 172 DPRINTF("\n"); 173 174 if (bus == NULL) { 175 /* was never setup properly */ 176 return (0); 177 } 178 /* Stop power watchdog */ 179 usb_callout_drain(&bus->power_wdog); 180 181 /* Let the USB explore process detach all devices. */ 182 usb_root_mount_rel(bus); 183 184 USB_BUS_LOCK(bus); 185 if (usb_proc_msignal(&bus->explore_proc, 186 &bus->detach_msg[0], &bus->detach_msg[1])) { 187 /* ignore */ 188 } 189 /* Wait for detach to complete */ 190 191 usb_proc_mwait(&bus->explore_proc, 192 &bus->detach_msg[0], &bus->detach_msg[1]); 193 194 USB_BUS_UNLOCK(bus); 195 196 /* Get rid of USB callback processes */ 197 198 usb_proc_free(&bus->giant_callback_proc); 199 usb_proc_free(&bus->non_giant_callback_proc); 200 201 /* Get rid of USB explore process */ 202 203 usb_proc_free(&bus->explore_proc); 204 205 /* Get rid of control transfer process */ 206 207 usb_proc_free(&bus->control_xfer_proc); 208 209 return (0); 210} 211 212/*------------------------------------------------------------------------* 213 * usb_bus_explore 214 * 215 * This function is used to explore the device tree from the root. 216 *------------------------------------------------------------------------*/ 217static void 218usb_bus_explore(struct usb_proc_msg *pm) 219{ 220 struct usb_bus *bus; 221 struct usb_device *udev; 222 223 bus = ((struct usb_bus_msg *)pm)->bus; 224 udev = bus->devices[USB_ROOT_HUB_ADDR]; 225 226 if (udev && udev->hub) { 227 228 if (bus->do_probe) { 229 bus->do_probe = 0; 230 bus->driver_added_refcount++; 231 } 232 if (bus->driver_added_refcount == 0) { 233 /* avoid zero, hence that is memory default */ 234 bus->driver_added_refcount = 1; 235 } 236 237#ifdef DDB 238 /* 239 * The following three lines of code are only here to 240 * recover from DDB: 241 */ 242 usb_proc_rewakeup(&bus->control_xfer_proc); 243 usb_proc_rewakeup(&bus->giant_callback_proc); 244 usb_proc_rewakeup(&bus->non_giant_callback_proc); 245#endif 246 247 USB_BUS_UNLOCK(bus); 248 249#if USB_HAVE_POWERD 250 /* 251 * First update the USB power state! 252 */ 253 usb_bus_powerd(bus); 254#endif 255 /* Explore the Root USB HUB. */ 256 (udev->hub->explore) (udev); 257 USB_BUS_LOCK(bus); 258 } 259 usb_root_mount_rel(bus); 260} 261 262/*------------------------------------------------------------------------* 263 * usb_bus_detach 264 * 265 * This function is used to detach the device tree from the root. 266 *------------------------------------------------------------------------*/ 267static void 268usb_bus_detach(struct usb_proc_msg *pm) 269{ 270 struct usb_bus *bus; 271 struct usb_device *udev; 272 device_t dev; 273 274 bus = ((struct usb_bus_msg *)pm)->bus; 275 udev = bus->devices[USB_ROOT_HUB_ADDR]; 276 dev = bus->bdev; 277 /* clear the softc */ 278 device_set_softc(dev, NULL); 279 USB_BUS_UNLOCK(bus); 280 281 /* detach children first */ 282 mtx_lock(&Giant); 283 bus_generic_detach(dev); 284 mtx_unlock(&Giant); 285 286 /* 287 * Free USB device and all subdevices, if any. 288 */ 289 usb_free_device(udev, 0); 290 291 USB_BUS_LOCK(bus); 292 /* clear bdev variable last */ 293 bus->bdev = NULL; 294} 295 296static void 297usb_power_wdog(void *arg) 298{ 299 struct usb_bus *bus = arg; 300 301 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 302 303 usb_callout_reset(&bus->power_wdog, 304 4 * hz, usb_power_wdog, arg); 305 306#ifdef DDB 307 /* 308 * The following line of code is only here to recover from 309 * DDB: 310 */ 311 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */ 312#endif 313 314#if USB_HAVE_POWERD 315 USB_BUS_UNLOCK(bus); 316 317 usb_bus_power_update(bus); 318 319 USB_BUS_LOCK(bus); 320#endif 321} 322 323/*------------------------------------------------------------------------* 324 * usb_bus_attach 325 * 326 * This function attaches USB in context of the explore thread. 327 *------------------------------------------------------------------------*/ 328static void 329usb_bus_attach(struct usb_proc_msg *pm) 330{ 331 struct usb_bus *bus; 332 struct usb_device *child; 333 device_t dev; 334 usb_error_t err; 335 enum usb_dev_speed speed; 336 337 bus = ((struct usb_bus_msg *)pm)->bus; 338 dev = bus->bdev; 339 340 DPRINTF("\n"); 341 342 switch (bus->usbrev) { 343 case USB_REV_1_0: 344 speed = USB_SPEED_FULL; 345 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 346 break; 347 348 case USB_REV_1_1: 349 speed = USB_SPEED_FULL; 350 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 351 break; 352 353 case USB_REV_2_0: 354 speed = USB_SPEED_HIGH; 355 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 356 break; 357 358 case USB_REV_2_5: 359 speed = USB_SPEED_VARIABLE; 360 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 361 break; 362 363 case USB_REV_3_0: 364 speed = USB_SPEED_SUPER; 365 device_printf(bus->bdev, "4.8Gbps Super Speed USB v3.0\n"); 366 break; 367 368 default: 369 device_printf(bus->bdev, "Unsupported USB revision\n"); 370 usb_root_mount_rel(bus); 371 return; 372 } 373 374 USB_BUS_UNLOCK(bus); 375 376 /* default power_mask value */ 377 bus->hw_power_state = 378 USB_HW_POWER_CONTROL | 379 USB_HW_POWER_BULK | 380 USB_HW_POWER_INTERRUPT | 381 USB_HW_POWER_ISOC | 382 USB_HW_POWER_NON_ROOT_HUB; 383 384 /* make sure power is set at least once */ 385 386 if (bus->methods->set_hw_power != NULL) { 387 (bus->methods->set_hw_power) (bus); 388 } 389 390 /* Allocate the Root USB device */ 391 392 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 393 speed, USB_MODE_HOST); 394 if (child) { 395 err = usb_probe_and_attach(child, 396 USB_IFACE_INDEX_ANY); 397 if (!err) { 398 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 399 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 400 err = USB_ERR_NO_ROOT_HUB; 401 } 402 } 403 } else { 404 err = USB_ERR_NOMEM; 405 } 406 407 USB_BUS_LOCK(bus); 408 409 if (err) { 410 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 411 usbd_errstr(err)); 412 usb_root_mount_rel(bus); 413 } 414 415 /* set softc - we are ready */ 416 device_set_softc(dev, bus); 417 418 /* start watchdog */ 419 usb_power_wdog(bus); 420} 421 422/*------------------------------------------------------------------------* 423 * usb_attach_sub 424 * 425 * This function creates a thread which runs the USB attach code. 426 *------------------------------------------------------------------------*/ 427static void 428usb_attach_sub(device_t dev, struct usb_bus *bus) 429{ 430 const char *pname = device_get_nameunit(dev); 431 432 mtx_lock(&Giant); 433 if (usb_devclass_ptr == NULL) 434 usb_devclass_ptr = devclass_find("usbus"); 435 mtx_unlock(&Giant); 436 437 /* Initialise USB process messages */ 438 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; 439 bus->explore_msg[0].bus = bus; 440 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; 441 bus->explore_msg[1].bus = bus; 442 443 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; 444 bus->detach_msg[0].bus = bus; 445 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; 446 bus->detach_msg[1].bus = bus; 447 448 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; 449 bus->attach_msg[0].bus = bus; 450 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; 451 bus->attach_msg[1].bus = bus; 452 453 /* Create USB explore and callback processes */ 454 455 if (usb_proc_create(&bus->giant_callback_proc, 456 &bus->bus_mtx, pname, USB_PRI_MED)) { 457 printf("WARNING: Creation of USB Giant " 458 "callback process failed.\n"); 459 } else if (usb_proc_create(&bus->non_giant_callback_proc, 460 &bus->bus_mtx, pname, USB_PRI_HIGH)) { 461 printf("WARNING: Creation of USB non-Giant " 462 "callback process failed.\n"); 463 } else if (usb_proc_create(&bus->explore_proc, 464 &bus->bus_mtx, pname, USB_PRI_MED)) { 465 printf("WARNING: Creation of USB explore " 466 "process failed.\n"); 467 } else if (usb_proc_create(&bus->control_xfer_proc, 468 &bus->bus_mtx, pname, USB_PRI_MED)) { 469 printf("WARNING: Creation of USB control transfer " 470 "process failed.\n"); 471 } else { 472 /* Get final attach going */ 473 USB_BUS_LOCK(bus); 474 if (usb_proc_msignal(&bus->explore_proc, 475 &bus->attach_msg[0], &bus->attach_msg[1])) { 476 /* ignore */ 477 } 478 USB_BUS_UNLOCK(bus); 479 480 /* Do initial explore */ 481 usb_needs_explore(bus, 1); 482 } 483} 484 485SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 486 487/*------------------------------------------------------------------------* 488 * usb_bus_mem_flush_all_cb 489 *------------------------------------------------------------------------*/ 490#if USB_HAVE_BUSDMA 491static void 492usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 493 struct usb_page *pg, usb_size_t size, usb_size_t align) 494{ 495 usb_pc_cpu_flush(pc); 496} 497#endif 498 499/*------------------------------------------------------------------------* 500 * usb_bus_mem_flush_all - factored out code 501 *------------------------------------------------------------------------*/ 502#if USB_HAVE_BUSDMA 503void 504usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 505{ 506 if (cb) { 507 cb(bus, &usb_bus_mem_flush_all_cb); 508 } 509} 510#endif 511 512/*------------------------------------------------------------------------* 513 * usb_bus_mem_alloc_all_cb 514 *------------------------------------------------------------------------*/ 515#if USB_HAVE_BUSDMA 516static void 517usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 518 struct usb_page *pg, usb_size_t size, usb_size_t align) 519{ 520 /* need to initialize the page cache */ 521 pc->tag_parent = bus->dma_parent_tag; 522 523 if (usb_pc_alloc_mem(pc, pg, size, align)) { 524 bus->alloc_failed = 1; 525 } 526} 527#endif 528 529/*------------------------------------------------------------------------* 530 * usb_bus_mem_alloc_all - factored out code 531 * 532 * Returns: 533 * 0: Success 534 * Else: Failure 535 *------------------------------------------------------------------------*/ 536uint8_t 537usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 538 usb_bus_mem_cb_t *cb) 539{ 540 bus->alloc_failed = 0; 541 542 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 543 NULL, MTX_DEF | MTX_RECURSE); 544 545 usb_callout_init_mtx(&bus->power_wdog, 546 &bus->bus_mtx, 0); 547 548 TAILQ_INIT(&bus->intr_q.head); 549
| 65 66/* function prototypes */ 67 68static device_probe_t usb_probe; 69static device_attach_t usb_attach; 70static device_detach_t usb_detach; 71 72static void usb_attach_sub(device_t, struct usb_bus *); 73 74/* static variables */ 75 76#ifdef USB_DEBUG 77static int usb_ctrl_debug = 0; 78 79SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller"); 80SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0, 81 "Debug level"); 82#endif 83 84static int usb_no_boot_wait = 0; 85TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait); 86SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RDTUN, &usb_no_boot_wait, 0, 87 "No device enumerate waiting at boot."); 88 89static devclass_t usb_devclass; 90 91static device_method_t usb_methods[] = { 92 DEVMETHOD(device_probe, usb_probe), 93 DEVMETHOD(device_attach, usb_attach), 94 DEVMETHOD(device_detach, usb_detach), 95 DEVMETHOD(device_suspend, bus_generic_suspend), 96 DEVMETHOD(device_resume, bus_generic_resume), 97 DEVMETHOD(device_shutdown, bus_generic_shutdown), 98 {0, 0} 99}; 100 101static driver_t usb_driver = { 102 .name = "usbus", 103 .methods = usb_methods, 104 .size = 0, 105}; 106 107/* Host Only Drivers */ 108DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0); 109DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0); 110DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0); 111DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0); 112 113/* Device Only Drivers */ 114DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0); 115DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0); 116DRIVER_MODULE(usbus, uss820, usb_driver, usb_devclass, 0, 0); 117 118/*------------------------------------------------------------------------* 119 * usb_probe 120 * 121 * This function is called from "{ehci,ohci,uhci}_pci_attach()". 122 *------------------------------------------------------------------------*/ 123static int 124usb_probe(device_t dev) 125{ 126 DPRINTF("\n"); 127 return (0); 128} 129 130static void 131usb_root_mount_rel(struct usb_bus *bus) 132{ 133 if (bus->bus_roothold != NULL) { 134 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); 135 root_mount_rel(bus->bus_roothold); 136 bus->bus_roothold = NULL; 137 } 138} 139 140/*------------------------------------------------------------------------* 141 * usb_attach 142 *------------------------------------------------------------------------*/ 143static int 144usb_attach(device_t dev) 145{ 146 struct usb_bus *bus = device_get_ivars(dev); 147 148 DPRINTF("\n"); 149 150 if (bus == NULL) { 151 device_printf(dev, "USB device has no ivars\n"); 152 return (ENXIO); 153 } 154 155 if (usb_no_boot_wait == 0) { 156 /* delay vfs_mountroot until the bus is explored */ 157 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); 158 } 159 160 usb_attach_sub(dev, bus); 161 162 return (0); /* return success */ 163} 164 165/*------------------------------------------------------------------------* 166 * usb_detach 167 *------------------------------------------------------------------------*/ 168static int 169usb_detach(device_t dev) 170{ 171 struct usb_bus *bus = device_get_softc(dev); 172 173 DPRINTF("\n"); 174 175 if (bus == NULL) { 176 /* was never setup properly */ 177 return (0); 178 } 179 /* Stop power watchdog */ 180 usb_callout_drain(&bus->power_wdog); 181 182 /* Let the USB explore process detach all devices. */ 183 usb_root_mount_rel(bus); 184 185 USB_BUS_LOCK(bus); 186 if (usb_proc_msignal(&bus->explore_proc, 187 &bus->detach_msg[0], &bus->detach_msg[1])) { 188 /* ignore */ 189 } 190 /* Wait for detach to complete */ 191 192 usb_proc_mwait(&bus->explore_proc, 193 &bus->detach_msg[0], &bus->detach_msg[1]); 194 195 USB_BUS_UNLOCK(bus); 196 197 /* Get rid of USB callback processes */ 198 199 usb_proc_free(&bus->giant_callback_proc); 200 usb_proc_free(&bus->non_giant_callback_proc); 201 202 /* Get rid of USB explore process */ 203 204 usb_proc_free(&bus->explore_proc); 205 206 /* Get rid of control transfer process */ 207 208 usb_proc_free(&bus->control_xfer_proc); 209 210 return (0); 211} 212 213/*------------------------------------------------------------------------* 214 * usb_bus_explore 215 * 216 * This function is used to explore the device tree from the root. 217 *------------------------------------------------------------------------*/ 218static void 219usb_bus_explore(struct usb_proc_msg *pm) 220{ 221 struct usb_bus *bus; 222 struct usb_device *udev; 223 224 bus = ((struct usb_bus_msg *)pm)->bus; 225 udev = bus->devices[USB_ROOT_HUB_ADDR]; 226 227 if (udev && udev->hub) { 228 229 if (bus->do_probe) { 230 bus->do_probe = 0; 231 bus->driver_added_refcount++; 232 } 233 if (bus->driver_added_refcount == 0) { 234 /* avoid zero, hence that is memory default */ 235 bus->driver_added_refcount = 1; 236 } 237 238#ifdef DDB 239 /* 240 * The following three lines of code are only here to 241 * recover from DDB: 242 */ 243 usb_proc_rewakeup(&bus->control_xfer_proc); 244 usb_proc_rewakeup(&bus->giant_callback_proc); 245 usb_proc_rewakeup(&bus->non_giant_callback_proc); 246#endif 247 248 USB_BUS_UNLOCK(bus); 249 250#if USB_HAVE_POWERD 251 /* 252 * First update the USB power state! 253 */ 254 usb_bus_powerd(bus); 255#endif 256 /* Explore the Root USB HUB. */ 257 (udev->hub->explore) (udev); 258 USB_BUS_LOCK(bus); 259 } 260 usb_root_mount_rel(bus); 261} 262 263/*------------------------------------------------------------------------* 264 * usb_bus_detach 265 * 266 * This function is used to detach the device tree from the root. 267 *------------------------------------------------------------------------*/ 268static void 269usb_bus_detach(struct usb_proc_msg *pm) 270{ 271 struct usb_bus *bus; 272 struct usb_device *udev; 273 device_t dev; 274 275 bus = ((struct usb_bus_msg *)pm)->bus; 276 udev = bus->devices[USB_ROOT_HUB_ADDR]; 277 dev = bus->bdev; 278 /* clear the softc */ 279 device_set_softc(dev, NULL); 280 USB_BUS_UNLOCK(bus); 281 282 /* detach children first */ 283 mtx_lock(&Giant); 284 bus_generic_detach(dev); 285 mtx_unlock(&Giant); 286 287 /* 288 * Free USB device and all subdevices, if any. 289 */ 290 usb_free_device(udev, 0); 291 292 USB_BUS_LOCK(bus); 293 /* clear bdev variable last */ 294 bus->bdev = NULL; 295} 296 297static void 298usb_power_wdog(void *arg) 299{ 300 struct usb_bus *bus = arg; 301 302 USB_BUS_LOCK_ASSERT(bus, MA_OWNED); 303 304 usb_callout_reset(&bus->power_wdog, 305 4 * hz, usb_power_wdog, arg); 306 307#ifdef DDB 308 /* 309 * The following line of code is only here to recover from 310 * DDB: 311 */ 312 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */ 313#endif 314 315#if USB_HAVE_POWERD 316 USB_BUS_UNLOCK(bus); 317 318 usb_bus_power_update(bus); 319 320 USB_BUS_LOCK(bus); 321#endif 322} 323 324/*------------------------------------------------------------------------* 325 * usb_bus_attach 326 * 327 * This function attaches USB in context of the explore thread. 328 *------------------------------------------------------------------------*/ 329static void 330usb_bus_attach(struct usb_proc_msg *pm) 331{ 332 struct usb_bus *bus; 333 struct usb_device *child; 334 device_t dev; 335 usb_error_t err; 336 enum usb_dev_speed speed; 337 338 bus = ((struct usb_bus_msg *)pm)->bus; 339 dev = bus->bdev; 340 341 DPRINTF("\n"); 342 343 switch (bus->usbrev) { 344 case USB_REV_1_0: 345 speed = USB_SPEED_FULL; 346 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); 347 break; 348 349 case USB_REV_1_1: 350 speed = USB_SPEED_FULL; 351 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); 352 break; 353 354 case USB_REV_2_0: 355 speed = USB_SPEED_HIGH; 356 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); 357 break; 358 359 case USB_REV_2_5: 360 speed = USB_SPEED_VARIABLE; 361 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); 362 break; 363 364 case USB_REV_3_0: 365 speed = USB_SPEED_SUPER; 366 device_printf(bus->bdev, "4.8Gbps Super Speed USB v3.0\n"); 367 break; 368 369 default: 370 device_printf(bus->bdev, "Unsupported USB revision\n"); 371 usb_root_mount_rel(bus); 372 return; 373 } 374 375 USB_BUS_UNLOCK(bus); 376 377 /* default power_mask value */ 378 bus->hw_power_state = 379 USB_HW_POWER_CONTROL | 380 USB_HW_POWER_BULK | 381 USB_HW_POWER_INTERRUPT | 382 USB_HW_POWER_ISOC | 383 USB_HW_POWER_NON_ROOT_HUB; 384 385 /* make sure power is set at least once */ 386 387 if (bus->methods->set_hw_power != NULL) { 388 (bus->methods->set_hw_power) (bus); 389 } 390 391 /* Allocate the Root USB device */ 392 393 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, 394 speed, USB_MODE_HOST); 395 if (child) { 396 err = usb_probe_and_attach(child, 397 USB_IFACE_INDEX_ANY); 398 if (!err) { 399 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || 400 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { 401 err = USB_ERR_NO_ROOT_HUB; 402 } 403 } 404 } else { 405 err = USB_ERR_NOMEM; 406 } 407 408 USB_BUS_LOCK(bus); 409 410 if (err) { 411 device_printf(bus->bdev, "Root HUB problem, error=%s\n", 412 usbd_errstr(err)); 413 usb_root_mount_rel(bus); 414 } 415 416 /* set softc - we are ready */ 417 device_set_softc(dev, bus); 418 419 /* start watchdog */ 420 usb_power_wdog(bus); 421} 422 423/*------------------------------------------------------------------------* 424 * usb_attach_sub 425 * 426 * This function creates a thread which runs the USB attach code. 427 *------------------------------------------------------------------------*/ 428static void 429usb_attach_sub(device_t dev, struct usb_bus *bus) 430{ 431 const char *pname = device_get_nameunit(dev); 432 433 mtx_lock(&Giant); 434 if (usb_devclass_ptr == NULL) 435 usb_devclass_ptr = devclass_find("usbus"); 436 mtx_unlock(&Giant); 437 438 /* Initialise USB process messages */ 439 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; 440 bus->explore_msg[0].bus = bus; 441 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; 442 bus->explore_msg[1].bus = bus; 443 444 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; 445 bus->detach_msg[0].bus = bus; 446 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; 447 bus->detach_msg[1].bus = bus; 448 449 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; 450 bus->attach_msg[0].bus = bus; 451 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; 452 bus->attach_msg[1].bus = bus; 453 454 /* Create USB explore and callback processes */ 455 456 if (usb_proc_create(&bus->giant_callback_proc, 457 &bus->bus_mtx, pname, USB_PRI_MED)) { 458 printf("WARNING: Creation of USB Giant " 459 "callback process failed.\n"); 460 } else if (usb_proc_create(&bus->non_giant_callback_proc, 461 &bus->bus_mtx, pname, USB_PRI_HIGH)) { 462 printf("WARNING: Creation of USB non-Giant " 463 "callback process failed.\n"); 464 } else if (usb_proc_create(&bus->explore_proc, 465 &bus->bus_mtx, pname, USB_PRI_MED)) { 466 printf("WARNING: Creation of USB explore " 467 "process failed.\n"); 468 } else if (usb_proc_create(&bus->control_xfer_proc, 469 &bus->bus_mtx, pname, USB_PRI_MED)) { 470 printf("WARNING: Creation of USB control transfer " 471 "process failed.\n"); 472 } else { 473 /* Get final attach going */ 474 USB_BUS_LOCK(bus); 475 if (usb_proc_msignal(&bus->explore_proc, 476 &bus->attach_msg[0], &bus->attach_msg[1])) { 477 /* ignore */ 478 } 479 USB_BUS_UNLOCK(bus); 480 481 /* Do initial explore */ 482 usb_needs_explore(bus, 1); 483 } 484} 485 486SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL); 487 488/*------------------------------------------------------------------------* 489 * usb_bus_mem_flush_all_cb 490 *------------------------------------------------------------------------*/ 491#if USB_HAVE_BUSDMA 492static void 493usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 494 struct usb_page *pg, usb_size_t size, usb_size_t align) 495{ 496 usb_pc_cpu_flush(pc); 497} 498#endif 499 500/*------------------------------------------------------------------------* 501 * usb_bus_mem_flush_all - factored out code 502 *------------------------------------------------------------------------*/ 503#if USB_HAVE_BUSDMA 504void 505usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) 506{ 507 if (cb) { 508 cb(bus, &usb_bus_mem_flush_all_cb); 509 } 510} 511#endif 512 513/*------------------------------------------------------------------------* 514 * usb_bus_mem_alloc_all_cb 515 *------------------------------------------------------------------------*/ 516#if USB_HAVE_BUSDMA 517static void 518usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, 519 struct usb_page *pg, usb_size_t size, usb_size_t align) 520{ 521 /* need to initialize the page cache */ 522 pc->tag_parent = bus->dma_parent_tag; 523 524 if (usb_pc_alloc_mem(pc, pg, size, align)) { 525 bus->alloc_failed = 1; 526 } 527} 528#endif 529 530/*------------------------------------------------------------------------* 531 * usb_bus_mem_alloc_all - factored out code 532 * 533 * Returns: 534 * 0: Success 535 * Else: Failure 536 *------------------------------------------------------------------------*/ 537uint8_t 538usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, 539 usb_bus_mem_cb_t *cb) 540{ 541 bus->alloc_failed = 0; 542 543 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent), 544 NULL, MTX_DEF | MTX_RECURSE); 545 546 usb_callout_init_mtx(&bus->power_wdog, 547 &bus->bus_mtx, 0); 548 549 TAILQ_INIT(&bus->intr_q.head); 550
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