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 static struct mtx udl_buffer_mtx; 80 static struct udl_buffer_head udl_buffer_head; 81 82 MALLOC_DEFINE(M_USB_DL, "USB", "USB DisplayLink"); 83 84 /* 85 * Prototypes. 86 */ 87 static usb_callback_t udl_bulk_write_callback; 88 89 static device_probe_t udl_probe; 90 static device_attach_t udl_attach; 91 static device_detach_t udl_detach; 92 static fb_getinfo_t udl_fb_getinfo; 93 static fb_setblankmode_t udl_fb_setblankmode; 94 95 static void udl_select_chip(struct udl_softc *, struct usb_attach_arg *); 96 static int udl_init_chip(struct udl_softc *); 97 static void udl_select_mode(struct udl_softc *); 98 static int udl_init_resolution(struct udl_softc *); 99 static void udl_fbmem_alloc(struct udl_softc *); 100 static int udl_cmd_write_buf_le16(struct udl_softc *, const uint8_t *, uint32_t, uint8_t, int); 101 static int udl_cmd_buf_copy_le16(struct udl_softc *, uint32_t, uint32_t, uint8_t, int); 102 static void udl_cmd_insert_int_1(struct udl_cmd_buf *, uint8_t); 103 static void udl_cmd_insert_int_3(struct udl_cmd_buf *, uint32_t); 104 static void udl_cmd_insert_buf_le16(struct udl_cmd_buf *, const uint8_t *, uint32_t); 105 static void udl_cmd_write_reg_1(struct udl_cmd_buf *, uint8_t, uint8_t); 106 static void udl_cmd_write_reg_3(struct udl_cmd_buf *, uint8_t, uint32_t); 107 static int udl_power_save(struct udl_softc *, int, int); 108 109 static const struct usb_config udl_config[UDL_N_TRANSFER] = { 110 [UDL_BULK_WRITE_0] = { 111 .type = UE_BULK, 112 .endpoint = UE_ADDR_ANY, 113 .direction = UE_DIR_TX, 114 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, 115 .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, 116 .callback = &udl_bulk_write_callback, 117 .frames = UDL_CMD_MAX_FRAMES, 118 .timeout = 5000, /* 5 seconds */ 119 }, 120 [UDL_BULK_WRITE_1] = { 121 .type = UE_BULK, 122 .endpoint = UE_ADDR_ANY, 123 .direction = UE_DIR_TX, 124 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, 125 .bufsize = UDL_CMD_MAX_DATA_SIZE * UDL_CMD_MAX_FRAMES, 126 .callback = &udl_bulk_write_callback, 127 .frames = UDL_CMD_MAX_FRAMES, 128 .timeout = 5000, /* 5 seconds */ 129 }, 130 }; 131 132 /* 133 * Driver glue. 134 */ 135 static devclass_t udl_devclass; 136 137 static device_method_t udl_methods[] = { 138 DEVMETHOD(device_probe, udl_probe), 139 DEVMETHOD(device_attach, udl_attach), 140 DEVMETHOD(device_detach, udl_detach), 141 DEVMETHOD(fb_getinfo, udl_fb_getinfo), 142 DEVMETHOD_END 143 }; 144 145 static driver_t udl_driver = { 146 .name = "udl", 147 .methods = udl_methods, 148 .size = sizeof(struct udl_softc), 149 }; 150 151 DRIVER_MODULE(udl, uhub, udl_driver, udl_devclass, NULL, NULL); 152 MODULE_DEPEND(udl, usb, 1, 1, 1); 153 MODULE_DEPEND(udl, fbd, 1, 1, 1); 154 MODULE_DEPEND(udl, videomode, 1, 1, 1); 155 MODULE_VERSION(udl, 1); 156 157 /* 158 * Matching devices. 159 */ 160 static const STRUCT_USB_HOST_ID udl_devs[] = { 161 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD4300U, DL120)}, 162 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000U, DL120)}, 163 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GUC2020, DL160)}, 164 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD220, DL165)}, 165 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VCUD60, DL160)}, 166 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DLDVI, DL160)}, 167 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VGA10, DL120)}, 168 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_WSDVI, DLUNK)}, 169 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_EC008, DL160)}, 170 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_HPDOCK, DL160)}, 171 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NL571, DL160)}, 172 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_M01061, DL195)}, 173 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NBDOCK, DL165)}, 174 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SWDVI, DLUNK)}, 175 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0, DL120)}, 176 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_CONV, DL160)}, 177 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE, DL160)}, 178 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LUM70, DL125)}, 179 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_POLARIS2, DLUNK)}, 180 {USB_VPI(USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421, DLUNK)} 181 }; 182 183 static void 184 udl_buffer_init(void *arg) 185 { 186 mtx_init(&udl_buffer_mtx, "USB", "UDL", MTX_DEF); 187 TAILQ_INIT(&udl_buffer_head); 188 } 189 SYSINIT(udl_buffer_init, SI_SUB_LOCK, SI_ORDER_FIRST, udl_buffer_init, NULL); 190 191 CTASSERT(sizeof(struct udl_buffer) < PAGE_SIZE); 192 193 static void * 194 udl_buffer_alloc(uint32_t size) 195 { 196 struct udl_buffer *buf; 197 mtx_lock(&udl_buffer_mtx); 198 TAILQ_FOREACH(buf, &udl_buffer_head, entry) { 199 if (buf->size == size) { 200 TAILQ_REMOVE(&udl_buffer_head, buf, entry); 201 break; 202 } 203 } 204 mtx_unlock(&udl_buffer_mtx); 205 if (buf != NULL) { 206 uint8_t *ptr = ((uint8_t *)buf) - size; 207 /* wipe and recycle buffer */ 208 memset(ptr, 0, size); 209 /* return buffer pointer */ 210 return (ptr); 211 } 212 /* allocate new buffer */ 213 return (malloc(size + sizeof(*buf), M_USB_DL, M_WAITOK | M_ZERO)); 214 } 215 216 static void 217 udl_buffer_free(void *_buf, uint32_t size) 218 { 219 struct udl_buffer *buf; 220 221 /* check for NULL pointer */ 222 if (_buf == NULL) 223 return; 224 /* compute pointer to recycle list */ 225 buf = (struct udl_buffer *)(((uint8_t *)_buf) + size); 226 227 /* 228 * Memory mapped buffers should never be freed. 229 * Put display buffer into a recycle list. 230 */ 231 mtx_lock(&udl_buffer_mtx); 232 buf->size = size; 233 TAILQ_INSERT_TAIL(&udl_buffer_head, buf, entry); 234 mtx_unlock(&udl_buffer_mtx); 235 } 236 237 static uint32_t 238 udl_get_fb_size(struct udl_softc *sc) 239 { 240 unsigned i = sc->sc_cur_mode; 241 242 return ((uint32_t)udl_modes[i].hdisplay * 243 (uint32_t)udl_modes[i].vdisplay * 2); 244 } 245 246 static uint32_t 247 udl_get_fb_width(struct udl_softc *sc) 248 { 249 unsigned i = sc->sc_cur_mode; 250 251 return (udl_modes[i].hdisplay); 252 } 253 254 static uint32_t 255 udl_get_fb_height(struct udl_softc *sc) 256 { 257 unsigned i = sc->sc_cur_mode; 258 259 return (udl_modes[i].vdisplay); 260 } 261 262 static uint32_t 263 udl_get_fb_hz(struct udl_softc *sc) 264 { 265 unsigned i = sc->sc_cur_mode; 266 267 return (udl_modes[i].hz); 268 } 269 270 static void 271 udl_callout(void *arg) 272 { 273 struct udl_softc *sc = arg; 274 const uint32_t max = udl_get_fb_size(sc); 275 int fps; 276 277 if (sc->sc_power_save == 0) { 278 fps = udl_fps; 279 280 /* figure out number of frames per second */ 281 if (fps < UDL_FPS_MIN) 282 fps = UDL_FPS_MIN; 283 else if (fps > UDL_FPS_MAX) 284 fps = UDL_FPS_MAX; 285 286 if (sc->sc_sync_off >= max) 287 sc->sc_sync_off = 0; 288 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); 289 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); 290 } else { 291 fps = 1; 292 } 293 callout_reset(&sc->sc_callout, hz / fps, &udl_callout, sc); 294 } 295 296 static int 297 udl_probe(device_t dev) 298 { 299 struct usb_attach_arg *uaa = device_get_ivars(dev); 300 301 if (uaa->usb_mode != USB_MODE_HOST) 302 return (ENXIO); 303 if (uaa->info.bConfigIndex != 0) 304 return (ENXIO); 305 if (uaa->info.bIfaceIndex != 0) 306 return (ENXIO); 307 308 return (usbd_lookup_id_by_uaa(udl_devs, sizeof(udl_devs), uaa)); 309 } 310 311 static int 312 udl_attach(device_t dev) 313 { 314 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 315 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 316 struct udl_softc *sc = device_get_softc(dev); 317 struct usb_attach_arg *uaa = device_get_ivars(dev); 318 int error; 319 int i; 320 321 device_set_usb_desc(dev); 322 323 mtx_init(&sc->sc_mtx, "UDL lock", NULL, MTX_DEF); 324 cv_init(&sc->sc_cv, "UDLCV"); 325 callout_init_mtx(&sc->sc_callout, &sc->sc_mtx, 0); 326 sc->sc_udev = uaa->device; 327 328 error = usbd_transfer_setup(uaa->device, &uaa->info.bIfaceIndex, 329 sc->sc_xfer, udl_config, UDL_N_TRANSFER, sc, &sc->sc_mtx); 330 331 if (error) { 332 DPRINTF("usbd_transfer_setup error=%s\n", usbd_errstr(error)); 333 goto detach; 334 } 335 usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_0], &sc->sc_xfer_head[0]); 336 usbd_xfer_set_priv(sc->sc_xfer[UDL_BULK_WRITE_1], &sc->sc_xfer_head[1]); 337 338 TAILQ_INIT(&sc->sc_xfer_head[0]); 339 TAILQ_INIT(&sc->sc_xfer_head[1]); 340 TAILQ_INIT(&sc->sc_cmd_buf_free); 341 TAILQ_INIT(&sc->sc_cmd_buf_pending); 342 343 sc->sc_def_chip = -1; 344 sc->sc_chip = USB_GET_DRIVER_INFO(uaa); 345 sc->sc_def_mode = -1; 346 sc->sc_cur_mode = UDL_MAX_MODES; 347 348 /* Allow chip ID to be overwritten */ 349 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid_force", 350 CTLFLAG_RWTUN, &sc->sc_def_chip, 0, "chip ID"); 351 352 /* Export current chip ID */ 353 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "chipid", 354 CTLFLAG_RD, &sc->sc_chip, 0, "chip ID"); 355 356 if (sc->sc_def_chip > -1 && sc->sc_def_chip <= DLMAX) { 357 device_printf(dev, "Forcing chip ID to 0x%04x\n", sc->sc_def_chip); 358 sc->sc_chip = sc->sc_def_chip; 359 } 360 /* 361 * The product might have more than one chip 362 */ 363 if (sc->sc_chip == DLUNK) 364 udl_select_chip(sc, uaa); 365 366 for (i = 0; i != UDL_CMD_MAX_BUFFERS; i++) { 367 struct udl_cmd_buf *cb = &sc->sc_cmd_buf_temp[i]; 368 369 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); 370 } 371 372 /* 373 * Initialize chip. 374 */ 375 error = udl_init_chip(sc); 376 if (error != USB_ERR_NORMAL_COMPLETION) 377 goto detach; 378 379 /* 380 * Select edid mode. 381 */ 382 udl_select_mode(sc); 383 384 /* Allow default mode to be overwritten */ 385 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode_force", 386 CTLFLAG_RWTUN, &sc->sc_def_mode, 0, "mode"); 387 388 /* Export current mode */ 389 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "mode", 390 CTLFLAG_RD, &sc->sc_cur_mode, 0, "mode"); 391 392 i = sc->sc_def_mode; 393 if (i > -1 && i < UDL_MAX_MODES) { 394 if (udl_modes[i].chip <= sc->sc_chip) { 395 device_printf(dev, "Forcing mode to %d\n", i); 396 sc->sc_cur_mode = i; 397 } 398 } 399 /* Printout current mode */ 400 device_printf(dev, "Mode selected %dx%d @ %dHz\n", 401 (int)udl_get_fb_width(sc), 402 (int)udl_get_fb_height(sc), 403 (int)udl_get_fb_hz(sc)); 404 405 udl_init_resolution(sc); 406 407 /* Allocate frame buffer */ 408 udl_fbmem_alloc(sc); 409 410 UDL_LOCK(sc); 411 udl_callout(sc); 412 UDL_UNLOCK(sc); 413 414 sc->sc_fb_info.fb_name = device_get_nameunit(dev); 415 sc->sc_fb_info.fb_size = sc->sc_fb_size; 416 sc->sc_fb_info.fb_bpp = 16; 417 sc->sc_fb_info.fb_depth = 16; 418 sc->sc_fb_info.fb_width = udl_get_fb_width(sc); 419 sc->sc_fb_info.fb_height = udl_get_fb_height(sc); 420 sc->sc_fb_info.fb_stride = sc->sc_fb_info.fb_width * 2; 421 sc->sc_fb_info.fb_pbase = 0; 422 sc->sc_fb_info.fb_vbase = (uintptr_t)sc->sc_fb_addr; 423 sc->sc_fb_info.fb_priv = sc; 424 sc->sc_fb_info.setblankmode = &udl_fb_setblankmode; 425 426 sc->sc_fbdev = device_add_child(dev, "fbd", -1); 427 if (sc->sc_fbdev == NULL) 428 goto detach; 429 if (device_probe_and_attach(sc->sc_fbdev) != 0) 430 goto detach; 431 432 return (0); 433 434 detach: 435 udl_detach(dev); 436 437 return (ENXIO); 438 } 439 440 static int 441 udl_detach(device_t dev) 442 { 443 struct udl_softc *sc = device_get_softc(dev); 444 445 if (sc->sc_fbdev != NULL) { 446 device_t bdev; 447 448 bdev = sc->sc_fbdev; 449 sc->sc_fbdev = NULL; 450 device_detach(bdev); 451 device_delete_child(dev, bdev); 452 } 453 UDL_LOCK(sc); 454 sc->sc_gone = 1; 455 callout_stop(&sc->sc_callout); 456 UDL_UNLOCK(sc); 457 458 usbd_transfer_unsetup(sc->sc_xfer, UDL_N_TRANSFER); 459 460 callout_drain(&sc->sc_callout); 461 462 mtx_destroy(&sc->sc_mtx); 463 cv_destroy(&sc->sc_cv); 464 465 /* put main framebuffer into a recycle list, if any */ 466 udl_buffer_free(sc->sc_fb_addr, sc->sc_fb_size); 467 468 /* free shadow framebuffer memory, if any */ 469 free(sc->sc_fb_copy, M_USB_DL); 470 471 return (0); 472 } 473 474 static struct fb_info * 475 udl_fb_getinfo(device_t dev) 476 { 477 struct udl_softc *sc = device_get_softc(dev); 478 479 return (&sc->sc_fb_info); 480 } 481 482 static int 483 udl_fb_setblankmode(void *arg, int mode) 484 { 485 struct udl_softc *sc = arg; 486 487 switch (mode) { 488 case V_DISPLAY_ON: 489 udl_power_save(sc, 1, M_WAITOK); 490 break; 491 case V_DISPLAY_BLANK: 492 udl_power_save(sc, 1, M_WAITOK); 493 if (sc->sc_fb_addr != 0) { 494 const uint32_t max = udl_get_fb_size(sc); 495 496 memset((void *)sc->sc_fb_addr, 0, max); 497 } 498 break; 499 case V_DISPLAY_STAND_BY: 500 case V_DISPLAY_SUSPEND: 501 udl_power_save(sc, 0, M_WAITOK); 502 break; 503 } 504 return (0); 505 } 506 507 static struct udl_cmd_buf * 508 udl_cmd_buf_alloc_locked(struct udl_softc *sc, int flags) 509 { 510 struct udl_cmd_buf *cb; 511 512 while ((cb = TAILQ_FIRST(&sc->sc_cmd_buf_free)) == NULL) { 513 if (flags != M_WAITOK) 514 break; 515 cv_wait(&sc->sc_cv, &sc->sc_mtx); 516 } 517 if (cb != NULL) { 518 TAILQ_REMOVE(&sc->sc_cmd_buf_free, cb, entry); 519 cb->off = 0; 520 } 521 return (cb); 522 } 523 524 static struct udl_cmd_buf * 525 udl_cmd_buf_alloc(struct udl_softc *sc, int flags) 526 { 527 struct udl_cmd_buf *cb; 528 529 UDL_LOCK(sc); 530 cb = udl_cmd_buf_alloc_locked(sc, flags); 531 UDL_UNLOCK(sc); 532 return (cb); 533 } 534 535 static void 536 udl_cmd_buf_send(struct udl_softc *sc, struct udl_cmd_buf *cb) 537 { 538 UDL_LOCK(sc); 539 if (sc->sc_gone) { 540 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_free, cb, entry); 541 } else { 542 /* mark end of command stack */ 543 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 544 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_EOC); 545 546 TAILQ_INSERT_TAIL(&sc->sc_cmd_buf_pending, cb, entry); 547 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_0]); 548 usbd_transfer_start(sc->sc_xfer[UDL_BULK_WRITE_1]); 549 } 550 UDL_UNLOCK(sc); 551 } 552 553 static struct udl_cmd_buf * 554 udl_fb_synchronize_locked(struct udl_softc *sc) 555 { 556 const uint32_t max = udl_get_fb_size(sc); 557 558 /* check if framebuffer is not ready */ 559 if (sc->sc_fb_addr == NULL || 560 sc->sc_fb_copy == NULL) 561 return (NULL); 562 563 while (sc->sc_sync_off < max) { 564 uint32_t delta = max - sc->sc_sync_off; 565 566 if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) 567 delta = UDL_CMD_MAX_PIXEL_COUNT * 2; 568 if (bcmp(sc->sc_fb_addr + sc->sc_sync_off, sc->sc_fb_copy + sc->sc_sync_off, delta) != 0) { 569 struct udl_cmd_buf *cb; 570 571 cb = udl_cmd_buf_alloc_locked(sc, M_NOWAIT); 572 if (cb == NULL) 573 goto done; 574 memcpy(sc->sc_fb_copy + sc->sc_sync_off, 575 sc->sc_fb_addr + sc->sc_sync_off, delta); 576 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 577 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); 578 udl_cmd_insert_int_3(cb, sc->sc_sync_off); 579 udl_cmd_insert_int_1(cb, delta / 2); 580 udl_cmd_insert_buf_le16(cb, sc->sc_fb_copy + sc->sc_sync_off, delta); 581 sc->sc_sync_off += delta; 582 return (cb); 583 } else { 584 sc->sc_sync_off += delta; 585 } 586 } 587 done: 588 return (NULL); 589 } 590 591 static void 592 udl_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 593 { 594 struct udl_softc *sc = usbd_xfer_softc(xfer); 595 struct udl_cmd_head *phead = usbd_xfer_get_priv(xfer); 596 struct udl_cmd_buf *cb; 597 unsigned i; 598 599 switch (USB_GET_STATE(xfer)) { 600 case USB_ST_TRANSFERRED: 601 TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); 602 case USB_ST_SETUP: 603 tr_setup: 604 for (i = 0; i != UDL_CMD_MAX_FRAMES; i++) { 605 cb = TAILQ_FIRST(&sc->sc_cmd_buf_pending); 606 if (cb == NULL) { 607 cb = udl_fb_synchronize_locked(sc); 608 if (cb == NULL) 609 break; 610 } else { 611 TAILQ_REMOVE(&sc->sc_cmd_buf_pending, cb, entry); 612 } 613 TAILQ_INSERT_TAIL(phead, cb, entry); 614 usbd_xfer_set_frame_data(xfer, i, cb->buf, cb->off); 615 } 616 if (i != 0) { 617 usbd_xfer_set_frames(xfer, i); 618 usbd_transfer_submit(xfer); 619 } 620 break; 621 default: 622 TAILQ_CONCAT(&sc->sc_cmd_buf_free, phead, entry); 623 if (error != USB_ERR_CANCELLED) { 624 /* try clear stall first */ 625 usbd_xfer_set_stall(xfer); 626 goto tr_setup; 627 } 628 break; 629 } 630 /* wakeup any waiters */ 631 cv_signal(&sc->sc_cv); 632 } 633 634 static int 635 udl_power_save(struct udl_softc *sc, int on, int flags) 636 { 637 struct udl_cmd_buf *cb; 638 639 /* get new buffer */ 640 cb = udl_cmd_buf_alloc(sc, flags); 641 if (cb == NULL) 642 return (EAGAIN); 643 644 DPRINTF("screen %s\n", on ? "ON" : "OFF"); 645 646 sc->sc_power_save = on ? 0 : 1; 647 648 if (on) 649 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); 650 else 651 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_OFF); 652 653 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 654 udl_cmd_buf_send(sc, cb); 655 return (0); 656 } 657 658 static int 659 udl_ctrl_msg(struct udl_softc *sc, uint8_t rt, uint8_t r, 660 uint16_t index, uint16_t value, uint8_t *buf, size_t len) 661 { 662 usb_device_request_t req; 663 int error; 664 665 req.bmRequestType = rt; 666 req.bRequest = r; 667 USETW(req.wIndex, index); 668 USETW(req.wValue, value); 669 USETW(req.wLength, len); 670 671 error = usbd_do_request_flags(sc->sc_udev, NULL, 672 &req, buf, 0, NULL, USB_DEFAULT_TIMEOUT); 673 674 DPRINTF("%s\n", usbd_errstr(error)); 675 676 return (error); 677 } 678 679 static int 680 udl_poll(struct udl_softc *sc, uint32_t *buf) 681 { 682 uint32_t lbuf; 683 int error; 684 685 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 686 UDL_CTRL_CMD_POLL, 0x0000, 0x0000, (uint8_t *)&lbuf, sizeof(lbuf)); 687 if (error == USB_ERR_NORMAL_COMPLETION) 688 *buf = le32toh(lbuf); 689 return (error); 690 } 691 692 static int 693 udl_read_1(struct udl_softc *sc, uint16_t addr, uint8_t *buf) 694 { 695 uint8_t lbuf[1]; 696 int error; 697 698 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 699 UDL_CTRL_CMD_READ_1, addr, 0x0000, lbuf, 1); 700 if (error == USB_ERR_NORMAL_COMPLETION) 701 *buf = *(uint8_t *)lbuf; 702 return (error); 703 } 704 705 static int 706 udl_write_1(struct udl_softc *sc, uint16_t addr, uint8_t buf) 707 { 708 int error; 709 710 error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, 711 UDL_CTRL_CMD_WRITE_1, addr, 0x0000, &buf, 1); 712 return (error); 713 } 714 715 static int 716 udl_read_edid(struct udl_softc *sc, uint8_t *buf) 717 { 718 uint8_t lbuf[64]; 719 uint16_t offset; 720 int error; 721 722 offset = 0; 723 724 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 725 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); 726 if (error != USB_ERR_NORMAL_COMPLETION) 727 goto fail; 728 bcopy(lbuf + 1, buf + offset, 63); 729 offset += 63; 730 731 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 732 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 64); 733 if (error != USB_ERR_NORMAL_COMPLETION) 734 goto fail; 735 bcopy(lbuf + 1, buf + offset, 63); 736 offset += 63; 737 738 error = udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, 739 UDL_CTRL_CMD_READ_EDID, 0x00a1, (offset << 8), lbuf, 3); 740 if (error != USB_ERR_NORMAL_COMPLETION) 741 goto fail; 742 bcopy(lbuf + 1, buf + offset, 2); 743 fail: 744 return (error); 745 } 746 747 static uint8_t 748 udl_lookup_mode(uint16_t hdisplay, uint16_t vdisplay, uint8_t hz, 749 uint16_t chip, uint32_t clock) 750 { 751 uint8_t idx; 752 753 /* 754 * Check first if we have a matching mode with pixelclock 755 */ 756 for (idx = 0; idx != UDL_MAX_MODES; idx++) { 757 if ((udl_modes[idx].hdisplay == hdisplay) && 758 (udl_modes[idx].vdisplay == vdisplay) && 759 (udl_modes[idx].clock == clock) && 760 (udl_modes[idx].chip <= chip)) { 761 return (idx); 762 } 763 } 764 765 /* 766 * If not, check for matching mode with update frequency 767 */ 768 for (idx = 0; idx != UDL_MAX_MODES; idx++) { 769 if ((udl_modes[idx].hdisplay == hdisplay) && 770 (udl_modes[idx].vdisplay == vdisplay) && 771 (udl_modes[idx].hz == hz) && 772 (udl_modes[idx].chip <= chip)) { 773 return (idx); 774 } 775 } 776 return (idx); 777 } 778 779 static void 780 udl_select_chip(struct udl_softc *sc, struct usb_attach_arg *uaa) 781 { 782 const char *pserial; 783 784 pserial = usb_get_serial(uaa->device); 785 786 sc->sc_chip = DL120; 787 788 if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && 789 (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_WSDVI)) { 790 791 /* 792 * WS Tech DVI is DL120 or DL160. All deviced uses the 793 * same revision (0.04) so iSerialNumber must be used 794 * to determin which chip it is. 795 */ 796 797 if (strlen(pserial) > 7) { 798 if (strncmp(pserial, "0198-13", 7) == 0) 799 sc->sc_chip = DL160; 800 } 801 DPRINTF("iSerialNumber (%s) used to select chip (%d)\n", 802 pserial, sc->sc_chip); 803 } 804 if ((uaa->info.idVendor == USB_VENDOR_DISPLAYLINK) && 805 (uaa->info.idProduct == USB_PRODUCT_DISPLAYLINK_SWDVI)) { 806 807 /* 808 * SUNWEIT DVI is DL160, DL125, DL165 or DL195. Major revision 809 * can be used to differ between DL1x0 and DL1x5. Minor to 810 * differ between DL1x5. iSerialNumber seems not to be uniqe. 811 */ 812 813 sc->sc_chip = DL160; 814 815 if (uaa->info.bcdDevice >= 0x100) { 816 sc->sc_chip = DL165; 817 if (uaa->info.bcdDevice == 0x104) 818 sc->sc_chip = DL195; 819 if (uaa->info.bcdDevice == 0x108) 820 sc->sc_chip = DL125; 821 } 822 DPRINTF("bcdDevice (%02x) used to select chip (%d)\n", 823 uaa->info.bcdDevice, sc->sc_chip); 824 } 825 } 826 827 static int 828 udl_set_enc_key(struct udl_softc *sc, uint8_t *buf, uint8_t len) 829 { 830 int error; 831 832 error = udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, 833 UDL_CTRL_CMD_SET_KEY, 0x0000, 0x0000, buf, len); 834 return (error); 835 } 836 837 static void 838 udl_fbmem_alloc(struct udl_softc *sc) 839 { 840 uint32_t size; 841 842 size = udl_get_fb_size(sc); 843 size = round_page(size); 844 /* check for zero size */ 845 if (size == 0) 846 size = PAGE_SIZE; 847 /* 848 * It is assumed that allocations above PAGE_SIZE bytes will 849 * be PAGE_SIZE aligned for use with mmap() 850 */ 851 sc->sc_fb_addr = udl_buffer_alloc(size); 852 sc->sc_fb_copy = malloc(size, M_USB_DL, M_WAITOK | M_ZERO); 853 sc->sc_fb_size = size; 854 } 855 856 static void 857 udl_cmd_insert_int_1(struct udl_cmd_buf *cb, uint8_t value) 858 { 859 860 cb->buf[cb->off] = value; 861 cb->off += 1; 862 } 863 864 #if 0 865 static void 866 udl_cmd_insert_int_2(struct udl_cmd_buf *cb, uint16_t value) 867 { 868 uint16_t lvalue; 869 870 lvalue = htobe16(value); 871 bcopy(&lvalue, cb->buf + cb->off, 2); 872 873 cb->off += 2; 874 } 875 876 #endif 877 878 static void 879 udl_cmd_insert_int_3(struct udl_cmd_buf *cb, uint32_t value) 880 { 881 uint32_t lvalue; 882 883 #if BYTE_ORDER == BIG_ENDIAN 884 lvalue = htobe32(value) << 8; 885 #else 886 lvalue = htobe32(value) >> 8; 887 #endif 888 bcopy(&lvalue, cb->buf + cb->off, 3); 889 890 cb->off += 3; 891 } 892 893 #if 0 894 static void 895 udl_cmd_insert_int_4(struct udl_cmd_buf *cb, uint32_t value) 896 { 897 uint32_t lvalue; 898 899 lvalue = htobe32(value); 900 bcopy(&lvalue, cb->buf + cb->off, 4); 901 902 cb->off += 4; 903 } 904 905 #endif 906 907 static void 908 udl_cmd_insert_buf_le16(struct udl_cmd_buf *cb, const uint8_t *buf, uint32_t len) 909 { 910 uint32_t x; 911 912 for (x = 0; x != len; x += 2) { 913 /* byte swap from little endian to big endian */ 914 cb->buf[cb->off + x + 0] = buf[x + 1]; 915 cb->buf[cb->off + x + 1] = buf[x + 0]; 916 } 917 cb->off += len; 918 } 919 920 static void 921 udl_cmd_write_reg_1(struct udl_cmd_buf *cb, uint8_t reg, uint8_t val) 922 { 923 924 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 925 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_REG_WRITE_1); 926 udl_cmd_insert_int_1(cb, reg); 927 udl_cmd_insert_int_1(cb, val); 928 } 929 930 static void 931 udl_cmd_write_reg_3(struct udl_cmd_buf *cb, uint8_t reg, uint32_t val) 932 { 933 934 udl_cmd_write_reg_1(cb, reg + 0, (val >> 16) & 0xff); 935 udl_cmd_write_reg_1(cb, reg + 1, (val >> 8) & 0xff); 936 udl_cmd_write_reg_1(cb, reg + 2, (val >> 0) & 0xff); 937 } 938 939 static int 940 udl_init_chip(struct udl_softc *sc) 941 { 942 uint32_t ui32; 943 uint8_t ui8; 944 int error; 945 946 error = udl_poll(sc, &ui32); 947 if (error != USB_ERR_NORMAL_COMPLETION) 948 return (error); 949 DPRINTF("poll=0x%08x\n", ui32); 950 951 /* Some products may use later chip too */ 952 switch (ui32 & 0xff) { 953 case 0xf1: /* DL1x5 */ 954 switch (sc->sc_chip) { 955 case DL120: 956 sc->sc_chip = DL125; 957 break; 958 case DL160: 959 sc->sc_chip = DL165; 960 break; 961 } 962 break; 963 } 964 DPRINTF("chip 0x%04x\n", sc->sc_chip); 965 966 error = udl_read_1(sc, 0xc484, &ui8); 967 if (error != USB_ERR_NORMAL_COMPLETION) 968 return (error); 969 DPRINTF("read 0x%02x from 0xc484\n", ui8); 970 971 error = udl_write_1(sc, 0xc41f, 0x01); 972 if (error != USB_ERR_NORMAL_COMPLETION) 973 return (error); 974 DPRINTF("write 0x01 to 0xc41f\n"); 975 976 error = udl_read_edid(sc, sc->sc_edid); 977 if (error != USB_ERR_NORMAL_COMPLETION) 978 return (error); 979 DPRINTF("read EDID\n"); 980 981 error = udl_set_enc_key(sc, __DECONST(void *, udl_null_key_1), 982 sizeof(udl_null_key_1)); 983 if (error != USB_ERR_NORMAL_COMPLETION) 984 return (error); 985 DPRINTF("set encryption key\n"); 986 987 error = udl_write_1(sc, 0xc40b, 0x00); 988 if (error != USB_ERR_NORMAL_COMPLETION) 989 return (error); 990 DPRINTF("write 0x00 to 0xc40b\n"); 991 992 return (USB_ERR_NORMAL_COMPLETION); 993 } 994 995 static void 996 udl_init_fb_offsets(struct udl_cmd_buf *cb, uint32_t start16, uint32_t stride16, 997 uint32_t start8, uint32_t stride8) 998 { 999 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); 1000 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START16, start16); 1001 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE16, stride16); 1002 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_START8, start8); 1003 udl_cmd_write_reg_3(cb, UDL_REG_ADDR_STRIDE8, stride8); 1004 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 1005 } 1006 1007 static int 1008 udl_init_resolution(struct udl_softc *sc) 1009 { 1010 const uint32_t max = udl_get_fb_size(sc); 1011 const uint8_t *buf = udl_modes[sc->sc_cur_mode].mode; 1012 struct udl_cmd_buf *cb; 1013 uint32_t delta; 1014 uint32_t i; 1015 int error; 1016 1017 /* get new buffer */ 1018 cb = udl_cmd_buf_alloc(sc, M_WAITOK); 1019 if (cb == NULL) 1020 return (EAGAIN); 1021 1022 /* write resolution values and set video memory offsets */ 1023 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0x00); 1024 for (i = 0; i < UDL_MODE_SIZE; i++) 1025 udl_cmd_write_reg_1(cb, i, buf[i]); 1026 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 1027 1028 udl_init_fb_offsets(cb, 0x000000, 0x000a00, 0x555555, 0x000500); 1029 udl_cmd_buf_send(sc, cb); 1030 1031 /* fill screen with black color */ 1032 for (i = 0; i < max; i += delta) { 1033 static const uint8_t udl_black[UDL_CMD_MAX_PIXEL_COUNT * 2] __aligned(4); 1034 1035 delta = max - i; 1036 if (delta > UDL_CMD_MAX_PIXEL_COUNT * 2) 1037 delta = UDL_CMD_MAX_PIXEL_COUNT * 2; 1038 if (i == 0) 1039 error = udl_cmd_write_buf_le16(sc, udl_black, i, delta / 2, M_WAITOK); 1040 else 1041 error = udl_cmd_buf_copy_le16(sc, 0, i, delta / 2, M_WAITOK); 1042 if (error) 1043 return (error); 1044 } 1045 1046 /* get new buffer */ 1047 cb = udl_cmd_buf_alloc(sc, M_WAITOK); 1048 if (cb == NULL) 1049 return (EAGAIN); 1050 1051 /* show framebuffer content */ 1052 udl_cmd_write_reg_1(cb, UDL_REG_SCREEN, UDL_REG_SCREEN_ON); 1053 udl_cmd_write_reg_1(cb, UDL_REG_SYNC, 0xff); 1054 udl_cmd_buf_send(sc, cb); 1055 return (0); 1056 } 1057 1058 static void 1059 udl_select_mode(struct udl_softc *sc) 1060 { 1061 struct udl_mode mode; 1062 int index = UDL_MAX_MODES; 1063 int i; 1064 1065 /* try to get the preferred mode from EDID */ 1066 edid_parse(sc->sc_edid, &sc->sc_edid_info); 1067 #ifdef USB_DEBUG 1068 edid_print(&sc->sc_edid_info); 1069 #endif 1070 if (sc->sc_edid_info.edid_preferred_mode != NULL) { 1071 mode.hz = 1072 (sc->sc_edid_info.edid_preferred_mode->dot_clock * 1000) / 1073 (sc->sc_edid_info.edid_preferred_mode->htotal * 1074 sc->sc_edid_info.edid_preferred_mode->vtotal); 1075 mode.clock = 1076 sc->sc_edid_info.edid_preferred_mode->dot_clock / 10; 1077 mode.hdisplay = 1078 sc->sc_edid_info.edid_preferred_mode->hdisplay; 1079 mode.vdisplay = 1080 sc->sc_edid_info.edid_preferred_mode->vdisplay; 1081 index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, mode.hz, 1082 sc->sc_chip, mode.clock); 1083 sc->sc_cur_mode = index; 1084 } else { 1085 DPRINTF("no preferred mode found!\n"); 1086 } 1087 1088 if (index == UDL_MAX_MODES) { 1089 DPRINTF("no mode line found\n"); 1090 1091 i = 0; 1092 while (i < sc->sc_edid_info.edid_nmodes) { 1093 mode.hz = 1094 (sc->sc_edid_info.edid_modes[i].dot_clock * 1000) / 1095 (sc->sc_edid_info.edid_modes[i].htotal * 1096 sc->sc_edid_info.edid_modes[i].vtotal); 1097 mode.clock = 1098 sc->sc_edid_info.edid_modes[i].dot_clock / 10; 1099 mode.hdisplay = 1100 sc->sc_edid_info.edid_modes[i].hdisplay; 1101 mode.vdisplay = 1102 sc->sc_edid_info.edid_modes[i].vdisplay; 1103 index = udl_lookup_mode(mode.hdisplay, mode.vdisplay, 1104 mode.hz, sc->sc_chip, mode.clock); 1105 if (index < UDL_MAX_MODES) 1106 if ((sc->sc_cur_mode == UDL_MAX_MODES) || 1107 (index > sc->sc_cur_mode)) 1108 sc->sc_cur_mode = index; 1109 i++; 1110 } 1111 } 1112 /* 1113 * If no mode found use default. 1114 */ 1115 if (sc->sc_cur_mode == UDL_MAX_MODES) 1116 sc->sc_cur_mode = udl_lookup_mode(800, 600, 60, sc->sc_chip, 0); 1117 } 1118 1119 static int 1120 udl_cmd_write_buf_le16(struct udl_softc *sc, const uint8_t *buf, uint32_t off, 1121 uint8_t pixels, int flags) 1122 { 1123 struct udl_cmd_buf *cb; 1124 1125 cb = udl_cmd_buf_alloc(sc, flags); 1126 if (cb == NULL) 1127 return (EAGAIN); 1128 1129 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 1130 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_WRITE | UDL_BULK_CMD_FB_WORD); 1131 udl_cmd_insert_int_3(cb, off); 1132 udl_cmd_insert_int_1(cb, pixels); 1133 udl_cmd_insert_buf_le16(cb, buf, 2 * pixels); 1134 udl_cmd_buf_send(sc, cb); 1135 1136 return (0); 1137 } 1138 1139 static int 1140 udl_cmd_buf_copy_le16(struct udl_softc *sc, uint32_t src, uint32_t dst, 1141 uint8_t pixels, int flags) 1142 { 1143 struct udl_cmd_buf *cb; 1144 1145 cb = udl_cmd_buf_alloc(sc, flags); 1146 if (cb == NULL) 1147 return (EAGAIN); 1148 1149 udl_cmd_insert_int_1(cb, UDL_BULK_SOC); 1150 udl_cmd_insert_int_1(cb, UDL_BULK_CMD_FB_COPY | UDL_BULK_CMD_FB_WORD); 1151 udl_cmd_insert_int_3(cb, dst); 1152 udl_cmd_insert_int_1(cb, pixels); 1153 udl_cmd_insert_int_3(cb, src); 1154 udl_cmd_buf_send(sc, cb); 1155 1156 return (0); 1157 } 1158