| 1 | /* $FreeBSD$ */ |
| 2 | /*- |
| 3 | * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | #include "opt_ddb.h" |
| 28 | |
| 29 | #include <sys/stdint.h> |
| 30 | #include <sys/param.h> |
| 31 | #include <sys/queue.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/kernel.h> |
| 35 | #include <sys/bus.h> |
| 36 | #include <sys/module.h> |
| 37 | #include <sys/lock.h> |
| 38 | #include <sys/condvar.h> |
| 39 | #include <sys/sysctl.h> |
| 40 | #include <sys/unistd.h> |
| 41 | #include <sys/callout.h> |
| 42 | #include <sys/malloc.h> |
| 43 | #include <sys/priv.h> |
| 44 | |
| 45 | #include <bus/u4b/usb.h> |
| 46 | #include <bus/u4b/usbdi.h> |
| 47 | |
| 48 | #define USB_DEBUG_VAR usb_ctrl_debug |
| 49 | |
| 50 | #include <bus/u4b/usb_core.h> |
| 51 | #include <bus/u4b/usb_debug.h> |
| 52 | #include <bus/u4b/usb_process.h> |
| 53 | #include <bus/u4b/usb_busdma.h> |
| 54 | #include <bus/u4b/usb_dynamic.h> |
| 55 | #include <bus/u4b/usb_device.h> |
| 56 | #include <bus/u4b/usb_hub.h> |
| 57 | |
| 58 | #include <bus/u4b/usb_controller.h> |
| 59 | #include <bus/u4b/usb_bus.h> |
| 60 | #include <bus/u4b/usb_pf.h> |
| 61 | #include "usb_if.h" |
| 62 | |
| 63 | /* function prototypes */ |
| 64 | |
| 65 | static device_probe_t usb_probe; |
| 66 | static device_attach_t usb_attach; |
| 67 | static device_detach_t usb_detach; |
| 68 | static device_suspend_t usb_suspend; |
| 69 | static device_resume_t usb_resume; |
| 70 | static device_shutdown_t usb_shutdown; |
| 71 | |
| 72 | static void usb_attach_sub(device_t, struct usb_bus *); |
| 73 | |
| 74 | /* static variables */ |
| 75 | |
| 76 | #ifdef USB_DEBUG |
| 77 | static int usb_ctrl_debug = 0; |
| 78 | |
| 79 | static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller"); |
| 80 | SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0, |
| 81 | "Debug level"); |
| 82 | #endif |
| 83 | |
| 84 | static int usb_no_boot_wait = 0; |
| 85 | TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait); |
| 86 | /* XXX freebsd uses CTLFLAG_RDTUN here */ |
| 87 | SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RW, &usb_no_boot_wait, 0, |
| 88 | "No USB device enumerate waiting at boot."); |
| 89 | |
| 90 | static int usb_no_shutdown_wait = 0; |
| 91 | TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait); |
| 92 | SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW, &usb_no_shutdown_wait, 0, |
| 93 | "No USB device waiting at system shutdown."); |
| 94 | |
| 95 | static devclass_t usb_devclass; |
| 96 | |
| 97 | static device_method_t usb_methods[] = { |
| 98 | DEVMETHOD(device_probe, usb_probe), |
| 99 | DEVMETHOD(device_attach, usb_attach), |
| 100 | DEVMETHOD(device_detach, usb_detach), |
| 101 | DEVMETHOD(device_suspend, usb_suspend), |
| 102 | DEVMETHOD(device_resume, usb_resume), |
| 103 | DEVMETHOD(device_shutdown, usb_shutdown), |
| 104 | {0, 0} |
| 105 | }; |
| 106 | |
| 107 | static driver_t usb_driver = { |
| 108 | .name = "usbus", |
| 109 | .methods = usb_methods, |
| 110 | .size = 0, |
| 111 | }; |
| 112 | |
| 113 | /* Host Only Drivers */ |
| 114 | DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, NULL, NULL); |
| 115 | DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, NULL, NULL); |
| 116 | DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, NULL, NULL); |
| 117 | DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, NULL, NULL); |
| 118 | |
| 119 | /*------------------------------------------------------------------------* |
| 120 | * usb_probe |
| 121 | * |
| 122 | * This function is called from "{ehci,ohci,uhci}_pci_attach()". |
| 123 | *------------------------------------------------------------------------*/ |
| 124 | static int |
| 125 | usb_probe(device_t dev) |
| 126 | { |
| 127 | DPRINTF("\n"); |
| 128 | return (0); |
| 129 | } |
| 130 | |
| 131 | static void |
| 132 | usb_root_mount_rel(struct usb_bus *bus) |
| 133 | { |
| 134 | if (bus->bus_roothold != NULL) { |
| 135 | DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold); |
| 136 | #if 0 /* XXX Dragonflybsd seems to not have this? */ |
| 137 | root_mount_rel(bus->bus_roothold); |
| 138 | #endif |
| 139 | bus->bus_roothold = NULL; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /*------------------------------------------------------------------------* |
| 144 | * usb_attach |
| 145 | *------------------------------------------------------------------------*/ |
| 146 | static int |
| 147 | usb_attach(device_t dev) |
| 148 | { |
| 149 | struct usb_bus *bus = device_get_ivars(dev); |
| 150 | |
| 151 | DPRINTF("\n"); |
| 152 | |
| 153 | if (bus == NULL) { |
| 154 | device_printf(dev, "USB device has no ivars\n"); |
| 155 | return (ENXIO); |
| 156 | } |
| 157 | |
| 158 | #if 0 /* XXX: Dragonfly does not seem to have this mechanism? */ |
| 159 | if (usb_no_boot_wait == 0) { |
| 160 | /* delay vfs_mountroot until the bus is explored */ |
| 161 | bus->bus_roothold = root_mount_hold(device_get_nameunit(dev)); |
| 162 | } |
| 163 | #endif |
| 164 | |
| 165 | usb_attach_sub(dev, bus); |
| 166 | |
| 167 | return (0); /* return success */ |
| 168 | } |
| 169 | |
| 170 | /*------------------------------------------------------------------------* |
| 171 | * usb_detach |
| 172 | *------------------------------------------------------------------------*/ |
| 173 | static int |
| 174 | usb_detach(device_t dev) |
| 175 | { |
| 176 | struct usb_bus *bus = device_get_softc(dev); |
| 177 | |
| 178 | DPRINTF("\n"); |
| 179 | |
| 180 | if (bus == NULL) { |
| 181 | /* was never setup properly */ |
| 182 | return (0); |
| 183 | } |
| 184 | /* Stop power watchdog */ |
| 185 | usb_callout_drain(&bus->power_wdog); |
| 186 | |
| 187 | /* Let the USB explore process detach all devices. */ |
| 188 | usb_root_mount_rel(bus); |
| 189 | |
| 190 | USB_BUS_LOCK(bus); |
| 191 | |
| 192 | /* Queue detach job */ |
| 193 | usb_proc_msignal(&bus->explore_proc, |
| 194 | &bus->detach_msg[0], &bus->detach_msg[1]); |
| 195 | |
| 196 | /* Wait for detach to complete */ |
| 197 | usb_proc_mwait(&bus->explore_proc, |
| 198 | &bus->detach_msg[0], &bus->detach_msg[1]); |
| 199 | |
| 200 | USB_BUS_UNLOCK(bus); |
| 201 | |
| 202 | /* Get rid of USB callback processes */ |
| 203 | |
| 204 | usb_proc_free(&bus->giant_callback_proc); |
| 205 | usb_proc_free(&bus->non_giant_callback_proc); |
| 206 | |
| 207 | /* Get rid of USB explore process */ |
| 208 | |
| 209 | usb_proc_free(&bus->explore_proc); |
| 210 | |
| 211 | /* Get rid of control transfer process */ |
| 212 | |
| 213 | usb_proc_free(&bus->control_xfer_proc); |
| 214 | |
| 215 | #if USB_HAVE_PF |
| 216 | usbpf_detach(bus); |
| 217 | #endif |
| 218 | return (0); |
| 219 | } |
| 220 | |
| 221 | /*------------------------------------------------------------------------* |
| 222 | * usb_suspend |
| 223 | *------------------------------------------------------------------------*/ |
| 224 | static int |
| 225 | usb_suspend(device_t dev) |
| 226 | { |
| 227 | struct usb_bus *bus = device_get_softc(dev); |
| 228 | |
| 229 | DPRINTF("\n"); |
| 230 | |
| 231 | if (bus == NULL) { |
| 232 | /* was never setup properly */ |
| 233 | return (0); |
| 234 | } |
| 235 | |
| 236 | USB_BUS_LOCK(bus); |
| 237 | usb_proc_msignal(&bus->explore_proc, |
| 238 | &bus->suspend_msg[0], &bus->suspend_msg[1]); |
| 239 | USB_BUS_UNLOCK(bus); |
| 240 | |
| 241 | return (0); |
| 242 | } |
| 243 | |
| 244 | /*------------------------------------------------------------------------* |
| 245 | * usb_resume |
| 246 | *------------------------------------------------------------------------*/ |
| 247 | static int |
| 248 | usb_resume(device_t dev) |
| 249 | { |
| 250 | struct usb_bus *bus = device_get_softc(dev); |
| 251 | |
| 252 | DPRINTF("\n"); |
| 253 | |
| 254 | if (bus == NULL) { |
| 255 | /* was never setup properly */ |
| 256 | return (0); |
| 257 | } |
| 258 | |
| 259 | USB_BUS_LOCK(bus); |
| 260 | usb_proc_msignal(&bus->explore_proc, |
| 261 | &bus->resume_msg[0], &bus->resume_msg[1]); |
| 262 | USB_BUS_UNLOCK(bus); |
| 263 | |
| 264 | return (0); |
| 265 | } |
| 266 | |
| 267 | /*------------------------------------------------------------------------* |
| 268 | * usb_shutdown |
| 269 | *------------------------------------------------------------------------*/ |
| 270 | static int |
| 271 | usb_shutdown(device_t dev) |
| 272 | { |
| 273 | struct usb_bus *bus = device_get_softc(dev); |
| 274 | |
| 275 | DPRINTF("\n"); |
| 276 | |
| 277 | if (bus == NULL) { |
| 278 | /* was never setup properly */ |
| 279 | return (0); |
| 280 | } |
| 281 | |
| 282 | device_printf(bus->bdev, "Controller shutdown\n"); |
| 283 | |
| 284 | USB_BUS_LOCK(bus); |
| 285 | usb_proc_msignal(&bus->explore_proc, |
| 286 | &bus->shutdown_msg[0], &bus->shutdown_msg[1]); |
| 287 | if (usb_no_shutdown_wait == 0) { |
| 288 | /* wait for shutdown callback to be executed */ |
| 289 | usb_proc_mwait(&bus->explore_proc, |
| 290 | &bus->shutdown_msg[0], &bus->shutdown_msg[1]); |
| 291 | } |
| 292 | USB_BUS_UNLOCK(bus); |
| 293 | |
| 294 | device_printf(bus->bdev, "Controller shutdown complete\n"); |
| 295 | |
| 296 | return (0); |
| 297 | } |
| 298 | |
| 299 | /*------------------------------------------------------------------------* |
| 300 | * usb_bus_explore |
| 301 | * |
| 302 | * This function is used to explore the device tree from the root. |
| 303 | *------------------------------------------------------------------------*/ |
| 304 | static void |
| 305 | usb_bus_explore(struct usb_proc_msg *pm) |
| 306 | { |
| 307 | struct usb_bus *bus; |
| 308 | struct usb_device *udev; |
| 309 | |
| 310 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 311 | udev = bus->devices[USB_ROOT_HUB_ADDR]; |
| 312 | |
| 313 | if (bus->no_explore != 0) |
| 314 | return; |
| 315 | |
| 316 | if (udev && udev->hub) { |
| 317 | |
| 318 | if (bus->do_probe) { |
| 319 | bus->do_probe = 0; |
| 320 | bus->driver_added_refcount++; |
| 321 | } |
| 322 | if (bus->driver_added_refcount == 0) { |
| 323 | /* avoid zero, hence that is memory default */ |
| 324 | bus->driver_added_refcount = 1; |
| 325 | } |
| 326 | |
| 327 | #ifdef DDB |
| 328 | /* |
| 329 | * The following three lines of code are only here to |
| 330 | * recover from DDB: |
| 331 | */ |
| 332 | usb_proc_rewakeup(&bus->control_xfer_proc); |
| 333 | usb_proc_rewakeup(&bus->giant_callback_proc); |
| 334 | usb_proc_rewakeup(&bus->non_giant_callback_proc); |
| 335 | #endif |
| 336 | |
| 337 | USB_BUS_UNLOCK(bus); |
| 338 | |
| 339 | #if USB_HAVE_POWERD |
| 340 | /* |
| 341 | * First update the USB power state! |
| 342 | */ |
| 343 | usb_bus_powerd(bus); |
| 344 | #endif |
| 345 | /* Explore the Root USB HUB. */ |
| 346 | (udev->hub->explore) (udev); |
| 347 | USB_BUS_LOCK(bus); |
| 348 | } |
| 349 | usb_root_mount_rel(bus); |
| 350 | } |
| 351 | |
| 352 | /*------------------------------------------------------------------------* |
| 353 | * usb_bus_detach |
| 354 | * |
| 355 | * This function is used to detach the device tree from the root. |
| 356 | *------------------------------------------------------------------------*/ |
| 357 | static void |
| 358 | usb_bus_detach(struct usb_proc_msg *pm) |
| 359 | { |
| 360 | struct usb_bus *bus; |
| 361 | struct usb_device *udev; |
| 362 | device_t dev; |
| 363 | |
| 364 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 365 | udev = bus->devices[USB_ROOT_HUB_ADDR]; |
| 366 | dev = bus->bdev; |
| 367 | /* clear the softc */ |
| 368 | device_set_softc(dev, NULL); |
| 369 | USB_BUS_UNLOCK(bus); |
| 370 | |
| 371 | /* detach children first */ |
| 372 | bus_generic_detach(dev); |
| 373 | |
| 374 | /* |
| 375 | * Free USB device and all subdevices, if any. |
| 376 | */ |
| 377 | usb_free_device(udev, 0); |
| 378 | |
| 379 | USB_BUS_LOCK(bus); |
| 380 | /* clear bdev variable last */ |
| 381 | bus->bdev = NULL; |
| 382 | } |
| 383 | |
| 384 | /*------------------------------------------------------------------------* |
| 385 | * usb_bus_suspend |
| 386 | * |
| 387 | * This function is used to suspend the USB contoller. |
| 388 | *------------------------------------------------------------------------*/ |
| 389 | static void |
| 390 | usb_bus_suspend(struct usb_proc_msg *pm) |
| 391 | { |
| 392 | struct usb_bus *bus; |
| 393 | struct usb_device *udev; |
| 394 | usb_error_t err; |
| 395 | |
| 396 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 397 | udev = bus->devices[USB_ROOT_HUB_ADDR]; |
| 398 | |
| 399 | if (udev == NULL || bus->bdev == NULL) |
| 400 | return; |
| 401 | |
| 402 | USB_BUS_UNLOCK(bus); |
| 403 | |
| 404 | bus_generic_shutdown(bus->bdev); |
| 405 | |
| 406 | usbd_enum_lock(udev); |
| 407 | |
| 408 | err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); |
| 409 | if (err) |
| 410 | device_printf(bus->bdev, "Could not unconfigure root HUB\n"); |
| 411 | |
| 412 | USB_BUS_LOCK(bus); |
| 413 | bus->hw_power_state = 0; |
| 414 | bus->no_explore = 1; |
| 415 | USB_BUS_UNLOCK(bus); |
| 416 | |
| 417 | if (bus->methods->set_hw_power != NULL) |
| 418 | (bus->methods->set_hw_power) (bus); |
| 419 | |
| 420 | if (bus->methods->set_hw_power_sleep != NULL) |
| 421 | (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND); |
| 422 | |
| 423 | usbd_enum_unlock(udev); |
| 424 | |
| 425 | USB_BUS_LOCK(bus); |
| 426 | } |
| 427 | |
| 428 | /*------------------------------------------------------------------------* |
| 429 | * usb_bus_resume |
| 430 | * |
| 431 | * This function is used to resume the USB contoller. |
| 432 | *------------------------------------------------------------------------*/ |
| 433 | static void |
| 434 | usb_bus_resume(struct usb_proc_msg *pm) |
| 435 | { |
| 436 | struct usb_bus *bus; |
| 437 | struct usb_device *udev; |
| 438 | usb_error_t err; |
| 439 | |
| 440 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 441 | udev = bus->devices[USB_ROOT_HUB_ADDR]; |
| 442 | |
| 443 | if (udev == NULL || bus->bdev == NULL) |
| 444 | return; |
| 445 | |
| 446 | USB_BUS_UNLOCK(bus); |
| 447 | |
| 448 | usbd_enum_lock(udev); |
| 449 | #if 0 |
| 450 | DEVMETHOD(usb_take_controller, NULL); /* dummy */ |
| 451 | #endif |
| 452 | USB_TAKE_CONTROLLER(device_get_parent(bus->bdev)); |
| 453 | |
| 454 | USB_BUS_LOCK(bus); |
| 455 | bus->hw_power_state = |
| 456 | USB_HW_POWER_CONTROL | |
| 457 | USB_HW_POWER_BULK | |
| 458 | USB_HW_POWER_INTERRUPT | |
| 459 | USB_HW_POWER_ISOC | |
| 460 | USB_HW_POWER_NON_ROOT_HUB; |
| 461 | bus->no_explore = 0; |
| 462 | USB_BUS_UNLOCK(bus); |
| 463 | |
| 464 | if (bus->methods->set_hw_power_sleep != NULL) |
| 465 | (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME); |
| 466 | |
| 467 | if (bus->methods->set_hw_power != NULL) |
| 468 | (bus->methods->set_hw_power) (bus); |
| 469 | |
| 470 | /* restore USB configuration to index 0 */ |
| 471 | err = usbd_set_config_index(udev, 0); |
| 472 | if (err) |
| 473 | device_printf(bus->bdev, "Could not configure root HUB\n"); |
| 474 | |
| 475 | /* probe and attach */ |
| 476 | err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY); |
| 477 | if (err) { |
| 478 | device_printf(bus->bdev, "Could not probe and " |
| 479 | "attach root HUB\n"); |
| 480 | } |
| 481 | |
| 482 | usbd_enum_unlock(udev); |
| 483 | |
| 484 | USB_BUS_LOCK(bus); |
| 485 | } |
| 486 | |
| 487 | /*------------------------------------------------------------------------* |
| 488 | * usb_bus_shutdown |
| 489 | * |
| 490 | * This function is used to shutdown the USB contoller. |
| 491 | *------------------------------------------------------------------------*/ |
| 492 | static void |
| 493 | usb_bus_shutdown(struct usb_proc_msg *pm) |
| 494 | { |
| 495 | struct usb_bus *bus; |
| 496 | struct usb_device *udev; |
| 497 | usb_error_t err; |
| 498 | |
| 499 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 500 | udev = bus->devices[USB_ROOT_HUB_ADDR]; |
| 501 | |
| 502 | if (udev == NULL || bus->bdev == NULL) |
| 503 | return; |
| 504 | |
| 505 | USB_BUS_UNLOCK(bus); |
| 506 | |
| 507 | bus_generic_shutdown(bus->bdev); |
| 508 | |
| 509 | usbd_enum_lock(udev); |
| 510 | |
| 511 | err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX); |
| 512 | if (err) |
| 513 | device_printf(bus->bdev, "Could not unconfigure root HUB\n"); |
| 514 | |
| 515 | USB_BUS_LOCK(bus); |
| 516 | bus->hw_power_state = 0; |
| 517 | bus->no_explore = 1; |
| 518 | USB_BUS_UNLOCK(bus); |
| 519 | |
| 520 | if (bus->methods->set_hw_power != NULL) |
| 521 | (bus->methods->set_hw_power) (bus); |
| 522 | |
| 523 | if (bus->methods->set_hw_power_sleep != NULL) |
| 524 | (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN); |
| 525 | |
| 526 | usbd_enum_unlock(udev); |
| 527 | |
| 528 | USB_BUS_LOCK(bus); |
| 529 | } |
| 530 | |
| 531 | static void |
| 532 | usb_power_wdog(void *arg) |
| 533 | { |
| 534 | struct usb_bus *bus = arg; |
| 535 | USB_BUS_LOCK_ASSERT(bus); |
| 536 | |
| 537 | usb_callout_reset(&bus->power_wdog, |
| 538 | 4 * hz, usb_power_wdog, arg); |
| 539 | |
| 540 | #ifdef DDB |
| 541 | /* |
| 542 | * The following line of code is only here to recover from |
| 543 | * DDB: |
| 544 | */ |
| 545 | usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */ |
| 546 | #endif |
| 547 | |
| 548 | #if USB_HAVE_POWERD |
| 549 | USB_BUS_UNLOCK(bus); |
| 550 | |
| 551 | usb_bus_power_update(bus); |
| 552 | |
| 553 | USB_BUS_LOCK(bus); |
| 554 | #endif |
| 555 | } |
| 556 | |
| 557 | /*------------------------------------------------------------------------* |
| 558 | * usb_bus_attach |
| 559 | * |
| 560 | * This function attaches USB in context of the explore thread. |
| 561 | *------------------------------------------------------------------------*/ |
| 562 | static void |
| 563 | usb_bus_attach(struct usb_proc_msg *pm) |
| 564 | { |
| 565 | struct usb_bus *bus; |
| 566 | struct usb_device *child; |
| 567 | device_t dev; |
| 568 | usb_error_t err; |
| 569 | enum usb_dev_speed speed; |
| 570 | |
| 571 | bus = ((struct usb_bus_msg *)pm)->bus; |
| 572 | dev = bus->bdev; |
| 573 | |
| 574 | DPRINTF("\n"); |
| 575 | |
| 576 | switch (bus->usbrev) { |
| 577 | case USB_REV_1_0: |
| 578 | speed = USB_SPEED_FULL; |
| 579 | device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n"); |
| 580 | break; |
| 581 | |
| 582 | case USB_REV_1_1: |
| 583 | speed = USB_SPEED_FULL; |
| 584 | device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n"); |
| 585 | break; |
| 586 | |
| 587 | case USB_REV_2_0: |
| 588 | speed = USB_SPEED_HIGH; |
| 589 | device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n"); |
| 590 | break; |
| 591 | |
| 592 | case USB_REV_2_5: |
| 593 | speed = USB_SPEED_VARIABLE; |
| 594 | device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n"); |
| 595 | break; |
| 596 | |
| 597 | case USB_REV_3_0: |
| 598 | speed = USB_SPEED_SUPER; |
| 599 | device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n"); |
| 600 | break; |
| 601 | |
| 602 | default: |
| 603 | device_printf(bus->bdev, "Unsupported USB revision\n"); |
| 604 | usb_root_mount_rel(bus); |
| 605 | return; |
| 606 | } |
| 607 | |
| 608 | /* default power_mask value */ |
| 609 | bus->hw_power_state = |
| 610 | USB_HW_POWER_CONTROL | |
| 611 | USB_HW_POWER_BULK | |
| 612 | USB_HW_POWER_INTERRUPT | |
| 613 | USB_HW_POWER_ISOC | |
| 614 | USB_HW_POWER_NON_ROOT_HUB; |
| 615 | |
| 616 | USB_BUS_UNLOCK(bus); |
| 617 | |
| 618 | /* make sure power is set at least once */ |
| 619 | |
| 620 | if (bus->methods->set_hw_power != NULL) { |
| 621 | (bus->methods->set_hw_power) (bus); |
| 622 | } |
| 623 | |
| 624 | /* allocate the Root USB device */ |
| 625 | |
| 626 | child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1, |
| 627 | speed, USB_MODE_HOST); |
| 628 | if (child) { |
| 629 | err = usb_probe_and_attach(child, |
| 630 | USB_IFACE_INDEX_ANY); |
| 631 | if (!err) { |
| 632 | if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) || |
| 633 | (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) { |
| 634 | err = USB_ERR_NO_ROOT_HUB; |
| 635 | } |
| 636 | } |
| 637 | } else { |
| 638 | err = USB_ERR_NOMEM; |
| 639 | } |
| 640 | |
| 641 | USB_BUS_LOCK(bus); |
| 642 | |
| 643 | if (err) { |
| 644 | device_printf(bus->bdev, "Root HUB problem, error=%s\n", |
| 645 | usbd_errstr(err)); |
| 646 | usb_root_mount_rel(bus); |
| 647 | } |
| 648 | |
| 649 | /* set softc - we are ready */ |
| 650 | device_set_softc(dev, bus); |
| 651 | |
| 652 | /* start watchdog */ |
| 653 | usb_power_wdog(bus); |
| 654 | } |
| 655 | |
| 656 | /*------------------------------------------------------------------------* |
| 657 | * usb_attach_sub |
| 658 | * |
| 659 | * This function creates a thread which runs the USB attach code. |
| 660 | *------------------------------------------------------------------------*/ |
| 661 | static void |
| 662 | usb_attach_sub(device_t dev, struct usb_bus *bus) |
| 663 | { |
| 664 | const char *pname = device_get_nameunit(dev); |
| 665 | |
| 666 | if (usb_devclass_ptr == NULL) |
| 667 | usb_devclass_ptr = devclass_find("usbus"); |
| 668 | |
| 669 | #if USB_HAVE_PF |
| 670 | usbpf_attach(bus); |
| 671 | #endif |
| 672 | /* Initialise USB process messages */ |
| 673 | bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore; |
| 674 | bus->explore_msg[0].bus = bus; |
| 675 | bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore; |
| 676 | bus->explore_msg[1].bus = bus; |
| 677 | |
| 678 | bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach; |
| 679 | bus->detach_msg[0].bus = bus; |
| 680 | bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach; |
| 681 | bus->detach_msg[1].bus = bus; |
| 682 | |
| 683 | bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach; |
| 684 | bus->attach_msg[0].bus = bus; |
| 685 | bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach; |
| 686 | bus->attach_msg[1].bus = bus; |
| 687 | |
| 688 | bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend; |
| 689 | bus->suspend_msg[0].bus = bus; |
| 690 | bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend; |
| 691 | bus->suspend_msg[1].bus = bus; |
| 692 | |
| 693 | bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume; |
| 694 | bus->resume_msg[0].bus = bus; |
| 695 | bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume; |
| 696 | bus->resume_msg[1].bus = bus; |
| 697 | |
| 698 | bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown; |
| 699 | bus->shutdown_msg[0].bus = bus; |
| 700 | bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown; |
| 701 | bus->shutdown_msg[1].bus = bus; |
| 702 | |
| 703 | /* Create USB explore and callback processes */ |
| 704 | |
| 705 | if (usb_proc_create(&bus->giant_callback_proc, |
| 706 | &bus->bus_lock, pname, USB_PRI_MED)) { |
| 707 | device_printf(dev, "WARNING: Creation of USB Giant " |
| 708 | "callback process failed.\n"); |
| 709 | } else if (usb_proc_create(&bus->non_giant_callback_proc, |
| 710 | &bus->bus_lock, pname, USB_PRI_HIGH)) { |
| 711 | device_printf(dev, "WARNING: Creation of USB non-Giant " |
| 712 | "callback process failed.\n"); |
| 713 | } else if (usb_proc_create(&bus->explore_proc, |
| 714 | &bus->bus_lock, pname, USB_PRI_MED)) { |
| 715 | device_printf(dev, "WARNING: Creation of USB explore " |
| 716 | "process failed.\n"); |
| 717 | } else if (usb_proc_create(&bus->control_xfer_proc, |
| 718 | &bus->bus_lock, pname, USB_PRI_MED)) { |
| 719 | device_printf(dev, "WARNING: Creation of USB control transfer " |
| 720 | "process failed.\n"); |
| 721 | } else { |
| 722 | /* Get final attach going */ |
| 723 | USB_BUS_LOCK(bus); |
| 724 | usb_proc_msignal(&bus->explore_proc, |
| 725 | &bus->attach_msg[0], &bus->attach_msg[1]); |
| 726 | USB_BUS_UNLOCK(bus); |
| 727 | |
| 728 | /* Do initial explore */ |
| 729 | usb_needs_explore(bus, 1); |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | SYSUNINIT(usb_bus_unload, SI_SUB_CONFIGURE, SI_ORDER_ANY, usb_bus_unload, NULL); |
| 734 | |
| 735 | /*------------------------------------------------------------------------* |
| 736 | * usb_bus_mem_flush_all_cb |
| 737 | *------------------------------------------------------------------------*/ |
| 738 | #if USB_HAVE_BUSDMA |
| 739 | static void |
| 740 | usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, |
| 741 | struct usb_page *pg, usb_size_t size, usb_size_t align) |
| 742 | { |
| 743 | usb_pc_cpu_flush(pc); |
| 744 | } |
| 745 | #endif |
| 746 | |
| 747 | /*------------------------------------------------------------------------* |
| 748 | * usb_bus_mem_flush_all - factored out code |
| 749 | *------------------------------------------------------------------------*/ |
| 750 | #if USB_HAVE_BUSDMA |
| 751 | void |
| 752 | usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) |
| 753 | { |
| 754 | if (cb) { |
| 755 | cb(bus, &usb_bus_mem_flush_all_cb); |
| 756 | } |
| 757 | } |
| 758 | #endif |
| 759 | |
| 760 | /*------------------------------------------------------------------------* |
| 761 | * usb_bus_mem_alloc_all_cb |
| 762 | *------------------------------------------------------------------------*/ |
| 763 | #if USB_HAVE_BUSDMA |
| 764 | static void |
| 765 | usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, |
| 766 | struct usb_page *pg, usb_size_t size, usb_size_t align) |
| 767 | { |
| 768 | /* need to initialize the page cache */ |
| 769 | pc->tag_parent = bus->dma_parent_tag; |
| 770 | |
| 771 | if (usb_pc_alloc_mem(pc, pg, size, align)) { |
| 772 | bus->alloc_failed = 1; |
| 773 | } |
| 774 | } |
| 775 | #endif |
| 776 | |
| 777 | /*------------------------------------------------------------------------* |
| 778 | * usb_bus_mem_alloc_all - factored out code |
| 779 | * |
| 780 | * Returns: |
| 781 | * 0: Success |
| 782 | * Else: Failure |
| 783 | *------------------------------------------------------------------------*/ |
| 784 | uint8_t |
| 785 | usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, |
| 786 | usb_bus_mem_cb_t *cb) |
| 787 | { |
| 788 | bus->alloc_failed = 0; |
| 789 | |
| 790 | lockinit(&bus->bus_lock, "USB bus mem", 0, LK_CANRECURSE); |
| 791 | |
| 792 | usb_callout_init_mtx(&bus->power_wdog, |
| 793 | &bus->bus_lock, 0); |
| 794 | |
| 795 | TAILQ_INIT(&bus->intr_q.head); |
| 796 | |
| 797 | #if USB_HAVE_BUSDMA |
| 798 | usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags, |
| 799 | dmat, &bus->bus_lock, NULL, 32, USB_BUS_DMA_TAG_MAX); |
| 800 | #endif |
| 801 | if ((bus->devices_max > USB_MAX_DEVICES) || |
| 802 | (bus->devices_max < USB_MIN_DEVICES) || |
| 803 | (bus->devices == NULL)) { |
| 804 | DPRINTFN(0, "Devices field has not been " |
| 805 | "initialised properly\n"); |
| 806 | bus->alloc_failed = 1; /* failure */ |
| 807 | } |
| 808 | #if USB_HAVE_BUSDMA |
| 809 | if (cb) { |
| 810 | cb(bus, &usb_bus_mem_alloc_all_cb); |
| 811 | } |
| 812 | #endif |
| 813 | if (bus->alloc_failed) { |
| 814 | usb_bus_mem_free_all(bus, cb); |
| 815 | } |
| 816 | return (bus->alloc_failed); |
| 817 | } |
| 818 | |
| 819 | /*------------------------------------------------------------------------* |
| 820 | * usb_bus_mem_free_all_cb |
| 821 | *------------------------------------------------------------------------*/ |
| 822 | #if USB_HAVE_BUSDMA |
| 823 | static void |
| 824 | usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc, |
| 825 | struct usb_page *pg, usb_size_t size, usb_size_t align) |
| 826 | { |
| 827 | usb_pc_free_mem(pc); |
| 828 | } |
| 829 | #endif |
| 830 | |
| 831 | /*------------------------------------------------------------------------* |
| 832 | * usb_bus_mem_free_all - factored out code |
| 833 | *------------------------------------------------------------------------*/ |
| 834 | void |
| 835 | usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb) |
| 836 | { |
| 837 | #if USB_HAVE_BUSDMA |
| 838 | if (cb) { |
| 839 | cb(bus, &usb_bus_mem_free_all_cb); |
| 840 | } |
| 841 | usb_dma_tag_unsetup(bus->dma_parent_tag); |
| 842 | #endif |
| 843 | |
| 844 | lockuninit(&bus->bus_lock); |
| 845 | } |