1 /* $OpenBSD: udl.c,v 1.81 2014/12/09 07:05:06 doug Exp $ */ 2 /* $FreeBSD$ */ 3 4 /*- 5 * Copyright (c) 2015 Hans Petter Selasky <hselasky@freebsd.org> 6 * Copyright (c) 2009 Marcus Glocker <mglocker@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /* 22 * Driver for the "DisplayLink DL-120 / DL-160" graphic chips based on 23 * the reversed engineered specifications of Florian Echtler 24 * <floe@butterbrot.org>: 25 * 26 * http://floe.butterbrot.org/displaylink/doku.php 27 */ 28 29 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/callout.h> 32 #include <sys/conf.h> 33 #include <sys/kernel.h> 34 #include <sys/lock.h> 35 #include <sys/module.h> 36 #include <sys/mutex.h> 37 #include <sys/condvar.h> 38 #include <sys/sysctl.h> 39 #include <sys/systm.h> 40 #include <sys/consio.h> 41 #include <sys/fbio.h> 42 43 #include <dev/fb/fbreg.h> 44 #include <dev/syscons/syscons.h> 45 46 #include <dev/videomode/videomode.h> 47 #include <dev/videomode/edidvar.h> 48 49 #include <dev/usb/usb.h> 50 #include <dev/usb/usbdi.h> 51 #include <dev/usb/usbdi_util.h> 52 #include "usbdevs.h" 53 54 #include <dev/usb/video/udl.h> 55 56 #include "fb_if.h" 57 58 #undef DPRINTF 59 #undef DPRINTFN 60 #define USB_DEBUG_VAR udl_debug 61 #include <dev/usb/usb_debug.h> 62 63 static SYSCTL_NODE(_hw_usb, OID_AUTO, udl, CTLFLAG_RW, 0, "USB UDL"); 64 65 #ifdef USB_DEBUG 66 static int udl_debug = 0; 67 68 SYSCTL_INT(_hw_usb_udl, OID_AUTO, debug, CTLFLAG_RWTUN, 69 &udl_debug, 0, "Debug level"); 70 #endif 71 72 #define UDL_FPS_MAX 60 73 #define UDL_FPS_MIN 1 74 75 static int udl_fps = 25; 76 SYSCTL_INT(_hw_usb_udl, OID_AUTO, fps, CTLFLAG_RWTUN, 77 &udl_fps, 0, "Frames Per Second, 1-60"); 78 79 /* 80 * Prototypes. 81 */ 82 static usb_callback_t udl_bulk_write_callback; 83 84 static device_probe_t udl_probe; 85 static device_attach_t udl_attach; 86 static device_detach_t udl_detach; 87 static fb_getinfo_t udl_fb_getinfo; 88 static fb_setblankmode_t udl_fb_setblankmode; 89 90 static void udl_select_chip(struct udl_softc *, struct usb_attach_arg *); 91 static int udl_init_chip(struct udl_softc *); 92 static void udl_select_mode(struct udl_softc *); 93 static int udl_init_resolution(struct udl_softc *); 94 static void udl_fbmem_alloc(struct udl_softc *); 95 static int udl_cmd_write_buf_le16(struct udl_softc *, const uint8_t *, uint32_t, uint8_t, int); 96 static int udl_cmd_buf_copy_le16(struct udl_softc *, uint32_t, uint32_t, uint8_t, int); 97 static void udl_cmd_insert_int_1(struct udl_cmd_buf *, uint8_t); 98 static void udl_cmd_insert_int_3(struct udl_cmd_buf *, uint32_t); 99 static void udl_cmd_insert_buf_le16(struct udl_cmd_buf *, const uint8_t *, uint32_t); 100 static void udl_cmd_write_reg_1(struct udl_cmd_buf *, uint8_t, uint8_t); 101 static void udl_cmd_write_reg_3(struct udl_cmd_buf *, uint8_t, uint32_t); 102 static int udl_power_save(struct udl_softc *, int, int); 103 104 static const struct usb_config udl_config[UDL_N_TRANSFER] = { 105 [UDL_BULK_WRITE_0] = { 106 .type = UE_BULK, 107 .endpoint = UE_ADDR_ANY, 108 .direction = UE_DIR_TX, 109 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, 110 .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, 111 .callback = &udl_bulk_write_callback, 112 .frames = UDL_CMD_MAX_FRAMES, 113 .timeout = 5000, /* 5 seconds */ 114 }, 115 [UDL_BULK_WRITE_1] = { 116 .type = UE_BULK, 117 .endpoint = UE_ADDR_ANY, 118 .direction = UE_DIR_TX, 119 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, 120 .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, 121 .callback = &udl_bulk_write_callback, 122 .frames = UDL_CMD_MAX_FRAMES, 123 .timeout = 5000, /* 5 seconds */ 124 }, 125 }; 126 127 /* 128 * Driver glue. 129 */ 130 static devclass_t udl_devclass; 131 132 static device_method_t udl_methods[] = { 133 DEVMETHOD(device_probe, udl_probe), 134 DEVMETHOD(device_attach, udl_attach), 135 DEVMETHOD(device_detach, udl_detach), 136 DEVMETHOD(fb_getinfo, udl_fb_getinfo), 137 DEVMETHOD_END 138 }; 139 140 static driver_t udl_driver = { 141 .name = "udl", 142 .methods = udl_methods, 143 .size = sizeof(struct udl_softc), 144 }; 145 146 DRIVER_MODULE(udl, uhub, udl_driver, udl_devclass, NULL, NULL); 147 MODULE_DEPEND(udl, usb, 1, 1, 1); 148 MODULE_DEPEND(udl, fbd, 1, 1, 1); 149 MODULE_DEPEND(udl, videomode, 1, 1, 1); 150 MODULE_VERSION(udl, 1); 151 152 /* 153 * Matching devices. 154 */ 155 static const STRUCT_USB_HOST_ID udl_devs[] = { 156 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD4300U, DL120)}, 157 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000U, DL120)}, 158 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GUC2020, DL160)}, 159 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD220, DL165)}, 160 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VCUD60, DL160)}, 161 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DLDVI, DL160)}, 162 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VGA10, DL120)}, 163 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_WSDVI, DLUNK)}, 164 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_EC008, DL160)}, 165 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_HPDOCK, DL160)}, 166 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NL571, DL160)}, 167 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_M01061, DL195)}, 168 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NBDOCK, DL165)}, 169 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SWDVI, DLUNK)}, 170 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0, DL120)}, 171 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_CONV, DL160)}, 172 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE, DL160)}, 173 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LUM70, DL125)}, 174 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_POLARIS2, DLUNK)}, 175 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421, DLUNK)} 176 }; 177 178 static uint32_t 179 udl_get_fb_size(struct udl_softc *sc) 180 { 181 unsigned i = sc->sc_cur_mode; 182 183 return ((uint32_t)udl_modes[i].hdisplay * 184 (uint32_t)udl_modes[i].vdisplay * 2); 185 } 186 187 static uint32_t 188 udl_get_fb_width(struct udl_softc *sc) 189 { 190 unsigned i = sc->sc_cur_mode; 191 192 return (udl_modes[i].hdisplay); 193 } 194 195 static uint32_t 196 udl_get_fb_height(struct udl_softc *sc) 197 { 198 unsigned i = sc->sc_cur_mode; 199 200 return (udl_modes[i].vdisplay); 201 } 202 203 static uint32_t 204 udl_get_fb_hz(struct udl_softc *sc) 205 { 206 unsigned i = sc->sc_cur_mode; 207 208 return (udl_modes[i].hz); 209 } 210 211 static void 212 udl_callout(void *arg) 213 { 214 struct udl_softc *sc = arg; 215 const uint32_t max = udl_get_fb_size(sc); 216 int fps; 217 218 if (sc->sc_power_save == 0) { 219 fps = udl_fps; 220 221 /* figure out number of frames per second */ 222 if (fps < UDL_FPS_MIN) 223 fps = UDL_FPS_MIN; 224 else if (fps > UDL_FPS_MAX) 225 fps = UDL_FPS_MAX; 226 227 if (sc->sc_sync_off >= max) 228 sc->sc_sync_off = 0; 229 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); 230 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); 231 } else { 232 fps = 1; 233 } 234 callout_reset(&sc->sc_callout, hz / fps, &udl_callout, sc); 235 } 236 237 static int 238 udl_probe(device_t dev) 239 { 240 struct usb_attach_arg *uaa = device_get_ivars(dev); 241 242 if (uaa->usb_mode != USB_MODE_HOST) 243 return (ENXIO); 244 if (uaa->info.bConfigIndex != 0) 245 return (ENXIO); 246 if (uaa->info.bIfaceIndex != 0) 247 return (ENXIO); 248 249 return (usbd_lookup_id_by_uaa(udl_devs, sizeof(udl_devs), uaa)); 250 } 251 252 static int 253 udl_attach(device_t dev) 254 { 255 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 256 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 257 struct udl_softc *sc = device_get_softc(dev); 258 struct usb_attach_arg *uaa = device_get_ivars(dev); 259 int error; 260 int i; 261 262 device_set_usb_desc(dev); 263 264 mtx_init(&sc->sc_mtx, "UDL lock", NULL, MTX_DEF); 265 cv_init(&sc->sc_cv, "UDLCV"); 266 callout_init_mtx(&sc->sc_callout, &sc->sc_mtx, 0); 267 sc->sc_udev = uaa->device; 268 269 error = usbd_transfer_setup(uaa->device, &uaa->info.bIfaceIndex, 270 sc->sc_xfer, udl_config, UDL_N_TRANSFER, sc, &sc->sc_mtx); 271 272 if (error) { 273 DPRINTF("usbd_transfer_setup error=%s\n", usbd_errstr(error)); 274 goto detach; 275 } 276 usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_0], &sc->sc_xfer_head[0]); 277 usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_1], &sc->sc_xfer_head[1]); 278 279 TAILQ_INIT(&sc->sc_xfer_head[0]); 280 TAILQ_INIT(&sc->sc_xfer_head[1]); 281 TAILQ_INIT(&sc->sc_cmd_buf_free); 282 TAILQ_INIT(&sc->sc_cmd_buf_pending); 283 284 sc->sc_def_chip = -1; 285 sc->sc_chip = USB_GET_DRIVER_INFO(uaa); 286 sc->sc_def_mode = -1; 287 sc->sc_cur_mode = UDL_MAX_MODES; 288 289 /* Allow chip ID to be overwritten */ 290 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid_force", 291 CTLFLAG_RWTUN, &sc->sc_def_chip, 0, "chip ID"); 292 293 /* Export current chip ID */ 294 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid", 295 CTLFLAG_RD, &sc->sc_chip, 0, "chip ID"); 296 297 if (sc->sc_def_chip > -1 && sc->sc_def_chip <= DLMAX) { 298 device_printf(dev, "Forcing chip ID to 0x%04x\n", sc->sc_def_chip); 299 sc->sc_chip = sc->sc_def_chip; 300 } 301 /* 302 * The product might have more than one chip 303 */ 304 if (sc->sc_chip == DLUNK) 305 udl_select_chip(sc, uaa); 306 307 for (i = 0; i != UDL_CMD_MAX_BUFFERS; i++) { 308 struct udl_cmd_buf *cb = &sc->sc_cmd_buf_temp[i]; 309 310 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); 311 } 312 313 /* 314 * Initialize chip. 315 */ 316 error = udl_init_chip(sc); 317 if (error != USB_ERR_NORMAL_COMPLETION) 318 goto detach; 319 320 /* 321 * Select edid mode. 322 */ 323 udl_select_mode(sc); 324 325 /* Allow default mode to be overwritten */ 326 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode_force", 327 CTLFLAG_RWTUN, &sc->sc_def_mode, 0, "mode"); 328 329 /* Export current mode */ 330 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode", 331 CTLFLAG_RD, &sc->sc_cur_mode, 0, "mode"); 332 333 i = sc->sc_def_mode; 334 if (i > -1 && i < UDL_MAX_MODES) { 335 if (udl_modes[i].chip <= sc->sc_chip) { 336 device_printf(dev, "Forcing mode to %d\n", i); 337 sc->sc_cur_mode = i; 338 } 339 } 340 /* Printout current mode */ 341 device_printf(dev, "Mode selected %dx%d @ %dHz\n", 342 (int)udl_get_fb_width(sc), 343 (int)udl_get_fb_height(sc), 344 (int)udl_get_fb_hz(sc)); 345 346 udl_init_resolution(sc); 347 348 /* Allocate frame buffer */ 349 udl_fbmem_alloc(sc); 350 351 UDL_LOCK(sc); 352 udl_callout(sc); 353 UDL_UNLOCK(sc); 354 355 sc->sc_fb_info.fb_name = device_get_nameunit(dev); 356 sc->sc_fb_info.fb_size = sc->sc_fb_size; 357 sc->sc_fb_info.fb_bpp = 16; 358 sc->sc_fb_info.fb_depth = 16; 359 sc->sc_fb_info.fb_width = udl_get_fb_width(sc); 360 sc->sc_fb_info.fb_height = udl_get_fb_height(sc); 361 sc->sc_fb_info.fb_stride = sc->sc_fb_info.fb_width * 2; 362 sc->sc_fb_info.fb_pbase = 0; 363 sc->sc_fb_info.fb_vbase = (uintptr_t)sc->sc_fb_addr; 364 sc->sc_fb_info.fb_priv = sc; 365 sc->sc_fb_info.setblankmode = &udl_fb_setblankmode; 366 367 sc->sc_fbdev = device_add_child(dev, "fbd", -1); 368 if (sc->sc_fbdev == NULL) 369 goto detach; 370 if (device_probe_and_attach(sc->sc_fbdev) != 0) 371 goto detach; 372 373 return (0); 374 375 detach: 376 udl_detach(dev); 377 378 return (ENXIO); 379 } 380 381 static int 382 udl_detach(device_t dev) 383 { 384 struct udl_softc *sc = device_get_softc(dev); 385 386 if (sc->sc_fbdev != NULL) { 387 device_t bdev; 388 389 bdev = sc->sc_fbdev; 390 sc->sc_fbdev = NULL; 391 device_detach(bdev); 392 device_delete_child(dev, bdev); 393 } 394 UDL_LOCK(sc); 395 sc->sc_gone = 1; 396 callout_stop(&sc->sc_callout); 397 UDL_UNLOCK(sc); 398 399 usbd_transfer_unsetup(sc->sc_xfer, UDL_N_TRANSFER); 400 401 callout_drain(&sc->sc_callout); 402 403 mtx_destroy(&sc->sc_mtx); 404 cv_destroy(&sc->sc_cv); 405 406 /* 407 * Free framebuffer memory, if any. 408 */ 409 free(sc->sc_fb_addr, M_DEVBUF); 410 free(sc->sc_fb_copy, M_DEVBUF); 411 412 return (0); 413 } 414 415 static struct fb_info * 416 udl_fb_getinfo(device_t dev) 417 { 418 struct udl_softc *sc = device_get_softc(dev); 419 420 return (&sc->sc_fb_info); 421 } 422 423 static int 424 udl_fb_setblankmode(void *arg, int mode) 425 { 426 struct udl_softc *sc = arg; 427 428 switch (mode) { 429 case V_DISPLAY_ON: 430 udl_power_save(sc, 1, M_WAITOK); 431 break; 432 case V_DISPLAY_BLANK: 433 udl_power_save(sc, 1, M_WAITOK); 434 if (sc->sc_fb_addr != 0) { 435 const uint32_t max = udl_get_fb_size(sc); 436 437 memset((void *)sc->sc_fb_addr, 0, max); 438 } 439 break; 440 case V_DISPLAY_STAND_BY: 441 case V_DISPLAY_SUSPEND: 442 udl_power_save(sc, 0, M_WAITOK); 443 break; 444 } 445 return (0); 446 } 447 448 static struct udl_cmd_buf * 449 udl_cmd_buf_alloc_locked(struct udl_softc *sc, int flags) 450 { 451 struct udl_cmd_buf *cb; 452 453 while ((cb = TAILQ_FIRST(&sc->sc_cmd_buf_free)) == NULL) { 454 if (flags != M_WAITOK) 455 break; 456 cv_wait(&sc->sc_cv, &sc->sc_mtx); 457 } 458 if (cb != NULL) { 459 TAILQ_REMOVE(&sc->sc_cmd_buf_free, cb, entry); 460 cb->off = 0; 461 } 462 return (cb); 463 } 464 465 static struct udl_cmd_buf * 466 udl_cmd_buf_alloc(struct udl_softc *sc, int flags) 467 { 468 struct udl_cmd_buf *cb; 469 470 UDL_LOCK(sc); 471 cb = udl_cmd_buf_alloc_locked(sc, flags); 472 UDL_UNLOCK(sc); 473 return (cb); 474 } 475 476 static void 477 udl_cmd_buf_send(struct udl_softc *sc, struct udl_cmd_buf *cb) 478 { 479 UDL_LOCK(sc); 480 if (sc->sc_gone) { 481 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); 482 } else { 483 /* mark end of command stack */ 484 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 485 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_EOC); 486 487 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_pending, cb, entry); 488 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); 489 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); 490 } 491 UDL_UNLOCK(sc); 492 } 493 494 static struct udl_cmd_buf * 495 udl_fb_synchronize_locked(struct udl_softc *sc) 496 { 497 const uint32_t max = udl_get_fb_size(sc); 498 499 /* check if framebuffer is not ready */ 500 if (sc->sc_fb_addr == NULL || 501 sc->sc_fb_copy == NULL) 502 return (NULL); 503 504 while (sc->sc_sync_off < max) { 505 uint32_t delta = max - sc->sc_sync_off; 506 507 if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) 508 delta = UDL_CMD_MAX_PIXEL_COUNT * 2; 509 if (bcmp(sc->sc_fb_addr + sc->sc_sync_off, sc->sc_fb_copy + sc->sc_sync_off, delta) != 0) { 510 struct udl_cmd_buf *cb; 511 512 cb = udl_cmd_buf_alloc_locked(sc, M_NOWAIT); 513 if (cb == NULL) 514 goto done; 515 memcpy(sc->sc_fb_copy + sc->sc_sync_off, 516 sc->sc_fb_addr + sc->sc_sync_off, delta); 517 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 518 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); 519 udl_cmd_insert_int_3(cb, sc->sc_sync_off); 520 udl_cmd_insert_int_1(cb, delta / 2); 521 udl_cmd_insert_buf_le16(cb, sc->sc_fb_copy + sc->sc_sync_off, delta); 522 sc->sc_sync_off += delta; 523 return (cb); 524 } else { 525 sc->sc_sync_off += delta; 526 } 527 } 528 done: 529 return (NULL); 530 } 531 532 static void 533 udl_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 534 { 535 struct udl_softc *sc = usbd_xfer_softc(xfer); 536 struct udl_cmd_head *phead = usbd_xfer_get_priv(xfer); 537 struct udl_cmd_buf *cb; 538 unsigned i; 539 540 switch (USB_GET_STATE(xfer)) { 541 case USB_ST_TRANSFERRED: 542 TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); 543 case USB_ST_SETUP: 544 tr_setup: 545 for (i = 0; i != UDL_CMD_MAX_FRAMES; i++) { 546 cb = TAILQ_FIRST(&sc->sc_cmd_buf_pending); 547 if (cb == NULL) { 548 cb = udl_fb_synchronize_locked(sc); 549 if (cb == NULL) 550 break; 551 } else { 552 TAILQ_REMOVE(&sc->sc_cmd_buf_pending, cb, entry); 553 } 554 TAILQ_INSERT_TAIL(phead, cb, entry); 555 usbd_xfer_set_frame_data(xfer, i, cb->buf, cb->off); 556 } 557 if (i != 0) { 558 usbd_xfer_set_frames(xfer, i); 559 usbd_transfer_submit(xfer); 560 } 561 break; 562 default: 563 TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); 564 if (error != USB_ERR_CANCELLED) { 565 /* try clear stall first */ 566 usbd_xfer_set_stall(xfer); 567 goto tr_setup; 568 } 569 break; 570 } 571 /* wakeup any waiters */ 572 cv_signal(&sc->sc_cv); 573 } 574 575 static int 576 udl_power_save(struct udl_softc *sc, int on, int flags) 577 { 578 struct udl_cmd_buf *cb; 579 580 /* get new buffer */ 581 cb = udl_cmd_buf_alloc(sc, flags); 582 if (cb == NULL) 583 return (EAGAIN); 584 585 DPRINTF("screen %s\n", on ? "ON" : "OFF"); 586 587 sc->sc_power_save = on ? 0 : 1; 588 589 if (on) 590 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); 591 else 592 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_OFF); 593 594 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 595 udl_cmd_buf_send(sc, cb); 596 return (0); 597 } 598 599 static int 600 udl_ctrl_msg(struct udl_softc *sc, uint8_t rt, uint8_t r, 601 uint16_t index, uint16_t value, uint8_t *buf, size_t len) 602 { 603 usb_device_request_t req; 604 int error; 605 606 req.bmRequestType = rt; 607 req.bRequest = r; 608 USETW(req.wIndex, index); 609 USETW(req.wValue, value); 610 USETW(req.wLength, len); 611 612 error = usbd_do_request_flags(sc->sc_udev, NULL, 613 &req, buf, 0, NULL, USB_DEFAULT_TIMEOUT); 614 615 DPRINTF("%s\n", usbd_errstr(error)); 616 617 return (error); 618 } 619 620 static int 621 udl_poll(struct udl_softc *sc, uint32_t *buf) 622 { 623 uint32_t lbuf; 624 int error; 625 626 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 627 UDL_CTRL_CMD_POLL, 0x0000, 0x0000, (uint8_t *)&lbuf, sizeof(lbuf)); 628 if (error == USB_ERR_NORMAL_COMPLETION) 629 *buf = le32toh(lbuf); 630 return (error); 631 } 632 633 static int 634 udl_read_1(struct udl_softc *sc, uint16_t addr, uint8_t *buf) 635 { 636 uint8_t lbuf[1]; 637 int error; 638 639 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 640 UDL_CTRL_CMD_READ_1, addr, 0x0000, lbuf, 1); 641 if (error == USB_ERR_NORMAL_COMPLETION) 642 *buf = *(uint8_t *)lbuf; 643 return (error); 644 } 645 646 static int 647 udl_write_1(struct udl_softc *sc, uint16_t addr, uint8_t buf) 648 { 649 int error; 650 651 error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, 652 UDL_CTRL_CMD_WRITE_1, addr, 0x0000, &buf, 1); 653 return (error); 654 } 655 656 static int 657 udl_read_edid(struct udl_softc *sc, uint8_t *buf) 658 { 659 uint8_t lbuf[64]; 660 uint16_t offset; 661 int error; 662 663 offset = 0; 664 665 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 666 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); 667 if (error != USB_ERR_NORMAL_COMPLETION) 668 goto fail; 669 bcopy(lbuf + 1, buf + offset, 63); 670 offset += 63; 671 672 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 673 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); 674 if (error != USB_ERR_NORMAL_COMPLETION) 675 goto fail; 676 bcopy(lbuf + 1, buf + offset, 63); 677 offset += 63; 678 679 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 680 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 3); 681 if (error != USB_ERR_NORMAL_COMPLETION) 682 goto fail; 683 bcopy(lbuf + 1, buf + offset, 2); 684 fail: 685 return (error); 686 } 687 688 static uint8_t 689 udl_lookup_mode(uint16_t hdisplay, uint16_t vdisplay, uint8_t hz, 690 uint16_t chip, uint32_t clock) 691 { 692 uint8_t idx; 693 694 /* 695 * Check first if we have a matching mode with pixelclock 696 */ 697 for (idx = 0; idx != UDL_MAX_MODES; idx++) { 698 if ((udl_modes[idx].hdisplay == hdisplay) && 699 (udl_modes[idx].vdisplay == vdisplay) && 700 (udl_modes[idx].clock == clock) && 701 (udl_modes[idx].chip <= chip)) { 702 return (idx); 703 } 704 } 705 706 /* 707 * If not, check for matching mode with update frequency 708 */ 709 for (idx = 0; idx != UDL_MAX_MODES; idx++) { 710 if ((udl_modes[idx].hdisplay == hdisplay) && 711 (udl_modes[idx].vdisplay == vdisplay) && 712 (udl_modes[idx].hz == hz) && 713 (udl_modes[idx].chip <= chip)) { 714 return (idx); 715 } 716 } 717 return (idx); 718 } 719 720 static void 721 udl_select_chip(struct udl_softc *sc, struct usb_attach_arg *uaa) 722 { 723 const char *pserial; 724 725 pserial = usb_get_serial(uaa->device); 726 727 sc->sc_chip = DL120; 728 729 if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && 730 (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_WSDVI)) { 731 732 /* 733 * WS Tech DVI is DL120 or DL160. All deviced uses the 734 * same revision (0.04) so iSerialNumber must be used 735 * to determin which chip it is. 736 */ 737 738 if (strlen(pserial) > 7) { 739 if (strncmp(pserial, "0198-13", 7) == 0) 740 sc->sc_chip = DL160; 741 } 742 DPRINTF("iSerialNumber (%s) used to select chip (%d)\n", 743 pserial, sc->sc_chip); 744 } 745 if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && 746 (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_SWDVI)) { 747 748 /* 749 * SUNWEIT DVI is DL160, DL125, DL165 or DL195. Major revision 750 * can be used to differ between DL1x0 and DL1x5. Minor to 751 * differ between DL1x5. iSerialNumber seems not to be uniqe. 752 */ 753 754 sc->sc_chip = DL160; 755 756 if (uaa->info.bcdDevice >= 0x100) { 757 sc->sc_chip = DL165; 758 if (uaa->info.bcdDevice == 0x104) 759 sc->sc_chip = DL195; 760 if (uaa->info.bcdDevice == 0x108) 761 sc->sc_chip = DL125; 762 } 763 DPRINTF("bcdDevice (%02x) used to select chip (%d)\n", 764 uaa->info.bcdDevice, sc->sc_chip); 765 } 766 } 767 768 static int 769 udl_set_enc_key(struct udl_softc *sc, uint8_t *buf, uint8_t len) 770 { 771 int error; 772 773 error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, 774 UDL_CTRL_CMD_SET_KEY, 0x0000, 0x0000, buf, len); 775 return (error); 776 } 777 778 static void 779 udl_fbmem_alloc(struct udl_softc *sc) 780 { 781 uint32_t size; 782 783 size = udl_get_fb_size(sc); 784 size = round_page(size); 785 786 /* 787 * It is assumed that allocations above PAGE_SIZE bytes will 788 * be PAGE_SIZE aligned for use with mmap() 789 */ 790 sc->sc_fb_addr = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO); 791 sc->sc_fb_copy = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO); 792 sc->sc_fb_size = size; 793 } 794 795 static void 796 udl_cmd_insert_int_1(struct udl_cmd_buf *cb, uint8_t value) 797 { 798 799 cb->buf[cb->off] = value; 800 cb->off += 1; 801 } 802 803 #if 0 804 static void 805 udl_cmd_insert_int_2(struct udl_cmd_buf *cb, uint16_t value) 806 { 807 uint16_t lvalue; 808 809 lvalue = htobe16(value); 810 bcopy(&lvalue, cb->buf + cb->off, 2); 811 812 cb->off += 2; 813 } 814 815 #endif 816 817 static void 818 udl_cmd_insert_int_3(struct udl_cmd_buf *cb, uint32_t value) 819 { 820 uint32_t lvalue; 821 822 #if BYTE_ORDER == BIG_ENDIAN 823 lvalue = htobe32(value) << 8; 824 #else 825 lvalue = htobe32(value) >> 8; 826 #endif 827 bcopy(&lvalue, cb->buf + cb->off, 3); 828 829 cb->off += 3; 830 } 831 832 #if 0 833 static void 834 udl_cmd_insert_int_4(struct udl_cmd_buf *cb, uint32_t value) 835 { 836 uint32_t lvalue; 837 838 lvalue = htobe32(value); 839 bcopy(&lvalue, cb->buf + cb->off, 4); 840 841 cb->off += 4; 842 } 843 844 #endif 845 846 static void 847 udl_cmd_insert_buf_le16(struct udl_cmd_buf *cb, const uint8_t *buf, uint32_t len) 848 { 849 uint32_t x; 850 851 for (x = 0; x != len; x += 2) { 852 /* byte swap from little endian to big endian */ 853 cb->buf[cb->off + x + 0] = buf[x + 1]; 854 cb->buf[cb->off + x + 1] = buf[x + 0]; 855 } 856 cb->off += len; 857 } 858 859 static void 860 udl_cmd_write_reg_1(struct udl_cmd_buf *cb, uint8_t reg, uint8_t val) 861 { 862 863 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 864 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_REG_WRITE_1); 865 udl_cmd_insert_int_1(cb, reg); 866 udl_cmd_insert_int_1(cb, val); 867 } 868 869 static void 870 udl_cmd_write_reg_3(struct udl_cmd_buf *cb, uint8_t reg, uint32_t val) 871 { 872 873 udl_cmd_write_reg_1(cb, reg + 0, (val >> 16) & 0xff); 874 udl_cmd_write_reg_1(cb, reg + 1, (val >> 8) & 0xff); 875 udl_cmd_write_reg_1(cb, reg + 2, (val >> 0) & 0xff); 876 } 877 878 static int 879 udl_init_chip(struct udl_softc *sc) 880 { 881 uint32_t ui32; 882 uint8_t ui8; 883 int error; 884 885 error = udl_poll(sc, &ui32); 886 if (error != USB_ERR_NORMAL_COMPLETION) 887 return (error); 888 DPRINTF("poll=0x%08x\n", ui32); 889 890 /* Some products may use later chip too */ 891 switch (ui32 & 0xff) { 892 case 0xf1: /* DL1x5 */ 893 switch (sc->sc_chip) { 894 case DL120: 895 sc->sc_chip = DL125; 896 break; 897 case DL160: 898 sc->sc_chip = DL165; 899 break; 900 } 901 break; 902 } 903 DPRINTF("chip 0x%04x\n", sc->sc_chip); 904 905 error = udl_read_1(sc, 0xc484, &ui8); 906 if (error != USB_ERR_NORMAL_COMPLETION) 907 return (error); 908 DPRINTF("read 0x%02x from 0xc484\n", ui8); 909 910 error = udl_write_1(sc, 0xc41f, 0x01); 911 if (error != USB_ERR_NORMAL_COMPLETION) 912 return (error); 913 DPRINTF("write 0x01 to 0xc41f\n"); 914 915 error = udl_read_edid(sc, sc->sc_edid); 916 if (error != USB_ERR_NORMAL_COMPLETION) 917 return (error); 918 DPRINTF("read EDID\n"); 919 920 error = udl_set_enc_key(sc, __DECONST(void *, udl_null_key_1), 921 sizeof(udl_null_key_1)); 922 if (error != USB_ERR_NORMAL_COMPLETION) 923 return (error); 924 DPRINTF("set encryption key\n"); 925 926 error = udl_write_1(sc, 0xc40b, 0x00); 927 if (error != USB_ERR_NORMAL_COMPLETION) 928 return (error); 929 DPRINTF("write 0x00 to 0xc40b\n"); 930 931 return (USB_ERR_NORMAL_COMPLETION); 932 } 933 934 static void 935 udl_init_fb_offsets(struct udl_cmd_buf *cb, uint32_t start16, uint32_t stride16, 936 uint32_t start8, uint32_t stride8) 937 { 938 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); 939 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START16, start16); 940 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE16, stride16); 941 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START8, start8); 942 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE8, stride8); 943 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 944 } 945 946 static int 947 udl_init_resolution(struct udl_softc *sc) 948 { 949 const uint32_t max = udl_get_fb_size(sc); 950 const uint8_t *buf = udl_modes[sc->sc_cur_mode].mode; 951 struct udl_cmd_buf *cb; 952 uint32_t delta; 953 uint32_t i; 954 int error; 955 956 /* get new buffer */ 957 cb = udl_cmd_buf_alloc(sc, M_WAITOK); 958 if (cb == NULL) 959 return (EAGAIN); 960 961 /* write resolution values and set video memory offsets */ 962 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); 963 for (i = 0; i < UDL_MODE_SIZE; i++) 964 udl_cmd_write_reg_1(cb, i, buf[i]); 965 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 966 967 udl_init_fb_offsets(cb, 0x000000, 0x000a00, 0x555555, 0x000500); 968 udl_cmd_buf_send(sc, cb); 969 970 /* fill screen with black color */ 971 for (i = 0; i < max; i += delta) { 972 static const uint8_t udl_black[UDL_CMD_MAX_PIXEL_COUNT * 2] __aligned(4); 973 974 delta = max - i; 975 if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) 976 delta = UDL_CMD_MAX_PIXEL_COUNT * 2; 977 if (i == 0) 978 error = udl_cmd_write_buf_le16(sc, udl_black, i, delta / 2, M_WAITOK); 979 else 980 error = udl_cmd_buf_copy_le16(sc, 0, i, delta / 2, M_WAITOK); 981 if (error) 982 return (error); 983 } 984 985 /* get new buffer */ 986 cb = udl_cmd_buf_alloc(sc, M_WAITOK); 987 if (cb == NULL) 988 return (EAGAIN); 989 990 /* show framebuffer content */ 991 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); 992 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 993 udl_cmd_buf_send(sc, cb); 994 return (0); 995 } 996 997 static void 998 udl_select_mode(struct udl_softc *sc) 999 { 1000 struct udl_mode mode; 1001 int index = UDL_MAX_MODES; 1002 int i; 1003 1004 /* try to get the preferred mode from EDID */ 1005 edid_parse(sc->sc_edid, &sc->sc_edid_info); 1006 #ifdef USB_DEBUG 1007 edid_print(&sc->sc_edid_info); 1008 #endif 1009 if (sc->sc_edid_info.edid_preferred_mode != NULL) { 1010 mode.hz = 1011 (sc->sc_edid_info.edid_preferred_mode->dot_clock * 1000) / 1012 (sc->sc_edid_info.edid_preferred_mode->htotal * 1013 sc->sc_edid_info.edid_preferred_mode->vtotal); 1014 mode.clock = 1015 sc->sc_edid_info.edid_preferred_mode->dot_clock / 10; 1016 mode.hdisplay = 1017 sc->sc_edid_info.edid_preferred_mode->hdisplay; 1018 mode.vdisplay = 1019 sc->sc_edid_info.edid_preferred_mode->vdisplay; 1020 index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, mode.hz, 1021 sc->sc_chip, mode.clock); 1022 sc->sc_cur_mode = index; 1023 } else { 1024 DPRINTF("no preferred mode found!\n"); 1025 } 1026 1027 if (index == UDL_MAX_MODES) { 1028 DPRINTF("no mode line found for %dx%d @ %dHz!\n", 1029 mode.hdisplay, mode.vdisplay, mode.hz); 1030 1031 i = 0; 1032 while (i < sc->sc_edid_info.edid_nmodes) { 1033 mode.hz = 1034 (sc->sc_edid_info.edid_modes[i].dot_clock * 1000) / 1035 (sc->sc_edid_info.edid_modes[i].htotal * 1036 sc->sc_edid_info.edid_modes[i].vtotal); 1037 mode.clock = 1038 sc->sc_edid_info.edid_modes[i].dot_clock / 10; 1039 mode.hdisplay = 1040 sc->sc_edid_info.edid_modes[i].hdisplay; 1041 mode.vdisplay = 1042 sc->sc_edid_info.edid_modes[i].vdisplay; 1043 index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, 1044 mode.hz, sc->sc_chip, mode.clock); 1045 if (index < UDL_MAX_MODES) 1046 if ((sc->sc_cur_mode == UDL_MAX_MODES) || 1047 (index > sc->sc_cur_mode)) 1048 sc->sc_cur_mode = index; 1049 i++; 1050 } 1051 } 1052 /* 1053 * If no mode found use default. 1054 */ 1055 if (sc->sc_cur_mode == UDL_MAX_MODES) 1056 sc->sc_cur_mode = udl_lookup_mode(800, 600, 60, sc->sc_chip, 0); 1057 } 1058 1059 static int 1060 udl_cmd_write_buf_le16(struct udl_softc *sc, const uint8_t *buf, uint32_t off, 1061 uint8_t pixels, int flags) 1062 { 1063 struct udl_cmd_buf *cb; 1064 1065 cb = udl_cmd_buf_alloc(sc, flags); 1066 if (cb == NULL) 1067 return (EAGAIN); 1068 1069 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 1070 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); 1071 udl_cmd_insert_int_3(cb, off); 1072 udl_cmd_insert_int_1(cb, pixels); 1073 udl_cmd_insert_buf_le16(cb, buf, 2 * pixels); 1074 udl_cmd_buf_send(sc, cb); 1075 1076 return (0); 1077 } 1078 1079 static int 1080 udl_cmd_buf_copy_le16(struct udl_softc *sc, uint32_t src, uint32_t dst, 1081 uint8_t pixels, int flags) 1082 { 1083 struct udl_cmd_buf *cb; 1084 1085 cb = udl_cmd_buf_alloc(sc, flags); 1086 if (cb == NULL) 1087 return (EAGAIN); 1088 1089 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 1090 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_COPY | UDL_BULK_CMD_FB_WORD); 1091 udl_cmd_insert_int_3(cb, dst); 1092 udl_cmd_insert_int_1(cb, pixels); 1093 udl_cmd_insert_int_3(cb, src); 1094 udl_cmd_buf_send(sc, cb); 1095 1096 return (0); 1097 } 1098