udl.c revision 1.34
1 /* $NetBSD: udl.c,v 1.34 2023/05/07 12:41:49 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 FUKAUMI Naoki. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Copyright (c) 2009 Marcus Glocker <mglocker (at) openbsd.org> 30 * 31 * Permission to use, copy, modify, and distribute this software for any 32 * purpose with or without fee is hereby granted, provided that the above 33 * copyright notice and this permission notice appear in all copies. 34 * 35 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 36 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 37 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 38 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 39 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 40 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 41 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 42 */ 43 44 /* 45 * Driver for the ``DisplayLink DL-1x0 / DL-1x5'' graphic chips based 46 * on the reversed engineered specifications of Florian Echtler 47 * <floe at butterbrot dot org>: 48 * 49 * http://floe.butterbrot.org/displaylink/doku.php 50 * 51 * This driver was written by Marcus Glocker for OpenBSD and ported to 52 * NetBSD by FUKAUMI Naoki with many modification. 53 */ 54 55 #include <sys/cdefs.h> 56 __KERNEL_RCSID(0, "$NetBSD: udl.c,v 1.34 2023/05/07 12:41:49 skrll Exp $"); 57 58 #ifdef _KERNEL_OPT 59 #include "opt_usb.h" 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/device.h> 64 #include <sys/kernel.h> 65 #include <sys/proc.h> 66 #include <sys/systm.h> 67 #include <sys/kmem.h> 68 #include <sys/kthread.h> 69 #include <sys/condvar.h> 70 71 #include <sys/bus.h> 72 #include <sys/endian.h> 73 74 #include <uvm/uvm_extern.h> 75 76 #include <dev/usb/usb.h> 77 #include <dev/usb/usbdi.h> 78 #include <dev/usb/usbdivar.h> 79 #include <dev/usb/usbdi_util.h> 80 #include <dev/usb/usb_mem.h> 81 #include <dev/usb/usbdevs.h> 82 83 #include <dev/firmload.h> 84 85 #include <dev/videomode/videomode.h> 86 #include <dev/videomode/edidvar.h> 87 88 #include <dev/wscons/wsconsio.h> 89 #include <dev/wscons/wsdisplayvar.h> 90 #include <dev/rasops/rasops.h> 91 92 #include <dev/usb/udl.h> 93 #ifdef notyet 94 #include <dev/usb/udlio.h> 95 #endif 96 97 /* 98 * Defines. 99 */ 100 #ifdef UDL_DEBUG 101 #define DPRINTF(x) do { if (udl_debug) printf x; } while (0) 102 #define DPRINTFN(n, x) do { if (udl_debug >= (n)) printf x; } while (0) 103 int udl_debug = 1; 104 #else 105 #define DPRINTF(x) do {} while (0) 106 #define DPRINTFN(n, x) do {} while (0) 107 #endif 108 109 /* 110 * Prototypes. 111 */ 112 static int udl_match(device_t, cfdata_t, void *); 113 static void udl_attach(device_t, device_t, void *); 114 static int udl_detach(device_t, int); 115 116 static int udl_ioctl(void *, void *, u_long, void *, int, 117 struct lwp *); 118 static paddr_t udl_mmap(void *, void *, off_t, int); 119 static int udl_alloc_screen(void *, const struct wsscreen_descr *, 120 void **, int *, int *, long *); 121 static void udl_free_screen(void *, void *); 122 static int udl_show_screen(void *, void *, int, 123 void (*)(void *, int, int), void *); 124 125 static void udl_comp_load(struct udl_softc *); 126 static void udl_comp_unload(struct udl_softc *); 127 static int udl_fbmem_alloc(struct udl_softc *); 128 static void udl_fbmem_free(struct udl_softc *); 129 static int udl_cmdq_alloc(struct udl_softc *); 130 static void udl_cmdq_free(struct udl_softc *); 131 static struct udl_cmdq *udl_cmdq_get(struct udl_softc *sc); 132 static void udl_cmdq_put(struct udl_softc *sc, 133 struct udl_cmdq *cmdq); 134 static void udl_cmdq_flush(struct udl_softc *); 135 136 static void udl_cursor(void *, int, int, int); 137 static void udl_putchar(void *, int, int, u_int, long); 138 static void udl_copycols(void *, int, int, int, int); 139 static void udl_erasecols(void *, int, int, int, long); 140 static void udl_copyrows(void *, int, int, int); 141 static void udl_eraserows(void *, int, int, long); 142 143 static void udl_restore_char(struct rasops_info *); 144 static void udl_draw_char(struct rasops_info *, uint16_t *, u_int, 145 int, int); 146 static void udl_copy_rect(struct udl_softc *, int, int, int, int, 147 int, int); 148 static void udl_fill_rect(struct udl_softc *, uint16_t, int, int, 149 int, int); 150 #ifdef notyet 151 static void udl_draw_rect(struct udl_softc *, 152 struct udl_ioctl_damage *); 153 static void udl_draw_rect_comp(struct udl_softc *, 154 struct udl_ioctl_damage *); 155 #endif 156 157 static inline void udl_copy_line(struct udl_softc *, int, int, int); 158 static inline void udl_fill_line(struct udl_softc *, uint16_t, int, int); 159 static inline void udl_draw_line(struct udl_softc *, uint16_t *, int, 160 int); 161 #ifdef notyet 162 static inline void udl_draw_line_comp(struct udl_softc *, uint16_t *, int, 163 int); 164 #endif 165 166 static int udl_cmd_send(struct udl_softc *); 167 static void udl_cmd_send_async(struct udl_softc *); 168 static void udl_cmd_send_async_cb(struct usbd_xfer *, 169 void *, usbd_status); 170 171 static int udl_ctrl_msg(struct udl_softc *, uint8_t, uint8_t, 172 uint16_t, uint16_t, uint8_t *, uint16_t); 173 static int udl_init(struct udl_softc *); 174 static void udl_read_edid(struct udl_softc *); 175 static void udl_set_address(struct udl_softc *, int, int, int, 176 int); 177 static void udl_blank(struct udl_softc *, int); 178 static uint16_t udl_lfsr(uint16_t); 179 static int udl_set_resolution(struct udl_softc *, 180 const struct videomode *); 181 static const struct videomode *udl_videomode_lookup(const char *); 182 static void udl_update_thread(void *); 183 static inline void udl_startstop(struct udl_softc *, bool); 184 185 static inline void 186 udl_cmd_add_1(struct udl_softc *sc, uint8_t val) 187 { 188 189 *sc->sc_cmd_buf++ = val; 190 } 191 192 static inline void 193 udl_cmd_add_2(struct udl_softc *sc, uint16_t val) 194 { 195 196 be16enc(sc->sc_cmd_buf, val); 197 sc->sc_cmd_buf += 2; 198 } 199 200 static inline void 201 udl_cmd_add_3(struct udl_softc *sc, uint32_t val) 202 { 203 204 udl_cmd_add_2(sc, val >> 8); 205 udl_cmd_add_1(sc, val); 206 } 207 208 static inline void 209 udl_cmd_add_4(struct udl_softc *sc, uint32_t val) 210 { 211 212 be32enc(sc->sc_cmd_buf, val); 213 sc->sc_cmd_buf += 4; 214 } 215 216 static inline void 217 udl_cmd_add_buf(struct udl_softc *sc, uint16_t *buf, int width) 218 { 219 #if BYTE_ORDER == BIG_ENDIAN 220 memcpy(sc->sc_cmd_buf, buf, width * 2); 221 sc->sc_cmd_buf += width * 2; 222 #else 223 uint16_t *endp; 224 225 endp = buf + width; 226 227 if (((uintptr_t)sc->sc_cmd_buf & 1) == 0) { 228 while (buf < endp) { 229 *(uint16_t *)sc->sc_cmd_buf = htobe16(*buf++); 230 sc->sc_cmd_buf += 2; 231 } 232 } else { 233 while (buf < endp) { 234 be16enc(sc->sc_cmd_buf, *buf++); 235 sc->sc_cmd_buf += 2; 236 } 237 } 238 #endif 239 } 240 241 static inline void 242 udl_reg_write_1(struct udl_softc *sc, uint8_t reg, uint8_t val) 243 { 244 245 udl_cmd_add_4(sc, (UDL_BULK_SOC << 24) | 246 (UDL_BULK_CMD_REG_WRITE_1 << 16) | (reg << 8) | val); 247 } 248 249 static inline void 250 udl_reg_write_2(struct udl_softc *sc, uint8_t reg, uint16_t val) 251 { 252 253 udl_reg_write_1(sc, reg++, val >> 8); 254 udl_reg_write_1(sc, reg, val); 255 } 256 257 static inline void 258 udl_reg_write_3(struct udl_softc *sc, uint8_t reg, uint32_t val) 259 { 260 261 udl_reg_write_1(sc, reg++, val >> 16); 262 udl_reg_write_1(sc, reg++, val >> 8); 263 udl_reg_write_1(sc, reg, val); 264 } 265 266 /* XXX */ 267 static int 268 firmware_load(const char *dname, const char *iname, uint8_t **ucodep, 269 size_t *sizep) 270 { 271 firmware_handle_t fh; 272 int error; 273 274 if ((error = firmware_open(dname, iname, &fh)) != 0) 275 return error; 276 *sizep = firmware_get_size(fh); 277 if ((*ucodep = firmware_malloc(*sizep)) == NULL) { 278 firmware_close(fh); 279 return ENOMEM; 280 } 281 if ((error = firmware_read(fh, 0, *ucodep, *sizep)) != 0) 282 firmware_free(*ucodep, *sizep); 283 firmware_close(fh); 284 285 return error; 286 } 287 288 /* 289 * Driver glue. 290 */ 291 CFATTACH_DECL_NEW(udl, sizeof(struct udl_softc), 292 udl_match, udl_attach, udl_detach, NULL); 293 294 /* 295 * wsdisplay glue. 296 */ 297 static struct wsdisplay_accessops udl_accessops = { 298 udl_ioctl, 299 udl_mmap, 300 udl_alloc_screen, 301 udl_free_screen, 302 udl_show_screen, 303 NULL, 304 NULL, 305 NULL, 306 }; 307 308 /* 309 * Matching devices. 310 */ 311 static const struct usb_devno udl_devs[] = { 312 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GUC2020 }, 313 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD220 }, 314 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LD190 }, 315 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_U70 }, 316 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_POLARIS2 }, 317 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VCUD60 }, 318 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_CONV }, 319 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_DLDVI }, 320 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_USBRGB }, 321 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCDUSB7X }, 322 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCDUSB10X }, 323 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_VGA10 }, 324 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_WSDVI }, 325 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_EC008 }, 326 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GXDVIU2 }, 327 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_GXDVIU2B }, 328 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD4300U }, 329 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000U }, 330 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_HPDOCK }, 331 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NL571 }, 332 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_M01061 }, 333 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_NBDOCK }, 334 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SWDVI }, 335 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LUM70 }, 336 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LCD8000UD_DVI }, 337 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LDEWX015U }, 338 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_MIMO }, 339 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE }, 340 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421WIDE }, 341 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SD_U2VDH }, 342 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0 }, 343 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_FYDVI }, 344 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_FYDVI2 } 345 }; 346 347 static int 348 udl_match(device_t parent, cfdata_t match, void *aux) 349 { 350 struct usb_attach_arg *uaa = aux; 351 352 if (usb_lookup(udl_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) 353 return UMATCH_VENDOR_PRODUCT; 354 355 return UMATCH_NONE; 356 } 357 358 static void 359 udl_attach(device_t parent, device_t self, void *aux) 360 { 361 struct udl_softc *sc = device_private(self); 362 struct usb_attach_arg *uaa = aux; 363 struct wsemuldisplaydev_attach_args aa; 364 const struct videomode *vmp; 365 usbd_status error; 366 char *devinfop; 367 368 aprint_naive("\n"); 369 aprint_normal("\n"); 370 371 sc->sc_dev = self; 372 sc->sc_udev = uaa->uaa_device; 373 sc->sc_init_state = UDL_INIT_NONE; 374 375 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 376 aprint_normal_dev(sc->sc_dev, "%s\n", devinfop); 377 usbd_devinfo_free(devinfop); 378 379 /* 380 * Set device configuration descriptor number. 381 */ 382 error = usbd_set_config_no(sc->sc_udev, 1, 0); 383 if (error != USBD_NORMAL_COMPLETION) { 384 aprint_error_dev(self, "failed to set configuration" 385 ", err=%s\n", usbd_errstr(error)); 386 return; 387 } 388 389 /* 390 * Create device handle to interface descriptor. 391 */ 392 error = usbd_device2interface_handle(sc->sc_udev, 0, &sc->sc_iface); 393 if (error != USBD_NORMAL_COMPLETION) 394 return; 395 396 /* 397 * Open bulk TX pipe. 398 */ 399 error = usbd_open_pipe(sc->sc_iface, 1, USBD_EXCLUSIVE_USE, 400 &sc->sc_tx_pipeh); 401 if (error != USBD_NORMAL_COMPLETION) 402 return; 403 404 #ifdef UDL_EVENT_COUNTERS 405 evcnt_attach_dynamic(&sc->sc_ev_cmdq_get, EVCNT_TYPE_MISC, NULL, 406 device_xname(sc->sc_dev), "udl_cmdq_get"); 407 evcnt_attach_dynamic(&sc->sc_ev_cmdq_put, EVCNT_TYPE_MISC, NULL, 408 device_xname(sc->sc_dev), "udl_cmdq_put"); 409 evcnt_attach_dynamic(&sc->sc_ev_cmdq_wait, EVCNT_TYPE_MISC, NULL, 410 device_xname(sc->sc_dev), "udl_cmdq_wait"); 411 evcnt_attach_dynamic(&sc->sc_ev_cmdq_timeout, EVCNT_TYPE_MISC, NULL, 412 device_xname(sc->sc_dev), "udl_cmdq_timeout"); 413 #endif 414 cv_init(&sc->sc_cv, device_xname(sc->sc_dev)); 415 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_TTY); /* XXX for tty_lock */ 416 sc->sc_init_state = UDL_INIT_MIDWAY; 417 418 /* 419 * Allocate bulk command queue. 420 */ 421 if (udl_cmdq_alloc(sc) != 0) 422 return; 423 424 if ((sc->sc_cmd_cur = udl_cmdq_get(sc)) == NULL) 425 return; 426 UDL_CMD_BUFINIT(sc); 427 428 /* 429 * Initialize chip. 430 */ 431 if (udl_init(sc) != 0) 432 return; 433 434 udl_read_edid(sc); 435 436 /* 437 * Initialize resolution. 438 */ 439 #ifndef UDL_VIDEOMODE 440 if (sc->sc_ei.edid_nmodes != 0 && 441 sc->sc_ei.edid_preferred_mode != NULL) 442 vmp = sc->sc_ei.edid_preferred_mode; 443 else 444 #define UDL_VIDEOMODE "640x480x60" 445 #endif 446 vmp = udl_videomode_lookup(UDL_VIDEOMODE); 447 448 if (vmp == NULL) 449 return; 450 451 sc->sc_width = vmp->hdisplay; 452 sc->sc_height = vmp->vdisplay; 453 sc->sc_offscreen = sc->sc_height * 3 / 2; 454 sc->sc_depth = 16; 455 456 if (udl_set_resolution(sc, vmp) != 0) 457 return; 458 459 sc->sc_defaultscreen.name = "default"; 460 sc->sc_screens[0] = &sc->sc_defaultscreen; 461 sc->sc_screenlist.nscreens = 1; 462 sc->sc_screenlist.screens = sc->sc_screens; 463 464 /* 465 * Set initial wsdisplay emulation mode. 466 */ 467 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 468 469 /* 470 * Attach wsdisplay. 471 */ 472 aa.console = 0; 473 aa.scrdata = &sc->sc_screenlist; 474 aa.accessops = &udl_accessops; 475 aa.accesscookie = sc; 476 477 sc->sc_wsdisplay = 478 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, CFARGS_NONE); 479 480 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 481 482 mutex_init(&sc->sc_thread_mtx, MUTEX_DEFAULT, IPL_NONE); 483 cv_init(&sc->sc_thread_cv, "udlcv"); 484 sc->sc_dying = false; 485 sc->sc_thread_stop = true; 486 kthread_create(PRI_BIO, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL, 487 udl_update_thread, sc, &sc->sc_thread, "udlupd"); 488 489 sc->sc_init_state = UDL_INIT_INITED; 490 } 491 492 static int 493 udl_detach(device_t self, int flags) 494 { 495 struct udl_softc *sc = device_private(self); 496 497 /* 498 * Close bulk TX pipe. 499 */ 500 if (sc->sc_tx_pipeh != NULL) { 501 usbd_abort_pipe(sc->sc_tx_pipeh); 502 } 503 504 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 505 /* 506 * Free command xfer buffers. 507 */ 508 udl_cmdq_flush(sc); 509 udl_cmdq_free(sc); 510 } 511 512 if (sc->sc_tx_pipeh != NULL) { 513 usbd_close_pipe(sc->sc_tx_pipeh); 514 } 515 516 /* 517 * Free Huffman table. 518 */ 519 udl_comp_unload(sc); 520 521 if (sc->sc_init_state >= UDL_INIT_INITED) { 522 /* 523 * Free framebuffer memory. 524 */ 525 udl_fbmem_free(sc); 526 527 mutex_enter(&sc->sc_thread_mtx); 528 sc->sc_dying = true; 529 cv_broadcast(&sc->sc_thread_cv); 530 mutex_exit(&sc->sc_thread_mtx); 531 kthread_join(sc->sc_thread); 532 cv_destroy(&sc->sc_thread_cv); 533 mutex_destroy(&sc->sc_thread_mtx); 534 } 535 536 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 537 cv_destroy(&sc->sc_cv); 538 mutex_destroy(&sc->sc_mtx); 539 } 540 541 if (sc->sc_init_state >= UDL_INIT_INITED) { 542 /* 543 * Detach wsdisplay. 544 */ 545 if (sc->sc_wsdisplay != NULL) 546 config_detach(sc->sc_wsdisplay, DETACH_FORCE); 547 548 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 549 sc->sc_dev); 550 } 551 552 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 553 #ifdef UDL_EVENT_COUNTERS 554 evcnt_detach(&sc->sc_ev_cmdq_get); 555 evcnt_detach(&sc->sc_ev_cmdq_put); 556 evcnt_detach(&sc->sc_ev_cmdq_wait); 557 evcnt_detach(&sc->sc_ev_cmdq_timeout); 558 #endif 559 } 560 561 return 0; 562 } 563 564 static int 565 udl_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 566 { 567 struct udl_softc *sc = v; 568 #ifdef notyet 569 struct udl_ioctl_damage *d; 570 #endif 571 struct wsdisplay_fbinfo *wdf; 572 u_int mode; 573 574 switch (cmd) { 575 case WSDISPLAYIO_GTYPE: 576 *(u_int *)data = WSDISPLAY_TYPE_DL; 577 return 0; 578 579 case WSDISPLAYIO_GINFO: 580 wdf = (struct wsdisplay_fbinfo *)data; 581 wdf->height = sc->sc_height; 582 wdf->width = sc->sc_width; 583 wdf->depth = sc->sc_depth; 584 wdf->cmsize = 0; 585 return 0; 586 587 case WSDISPLAYIO_GVIDEO: 588 *(u_int *)data = sc->sc_blank; 589 return 0; 590 591 case WSDISPLAYIO_SVIDEO: 592 mode = *(u_int *)data; 593 if (mode == sc->sc_blank) 594 return 0; 595 switch (mode) { 596 case WSDISPLAYIO_VIDEO_OFF: 597 udl_startstop(sc, true); 598 udl_blank(sc, 1); 599 break; 600 case WSDISPLAYIO_VIDEO_ON: 601 udl_blank(sc, 0); 602 break; 603 default: 604 return EINVAL; 605 } 606 if (UDL_CMD_BUFSIZE(sc) > 0) 607 udl_cmd_send_async(sc); 608 udl_cmdq_flush(sc); 609 sc->sc_blank = mode; 610 return 0; 611 612 case WSDISPLAYIO_SMODE: 613 mode = *(u_int *)data; 614 if (mode == sc->sc_mode) 615 return 0; 616 switch (mode) { 617 case WSDISPLAYIO_MODE_EMUL: 618 udl_startstop(sc, true); 619 /* clear screen */ 620 udl_fill_rect(sc, 0, 0, 0, sc->sc_width, 621 sc->sc_height); 622 if (UDL_CMD_BUFSIZE(sc) > 0) 623 udl_cmd_send_async(sc); 624 udl_cmdq_flush(sc); 625 udl_comp_unload(sc); 626 break; 627 case WSDISPLAYIO_MODE_DUMBFB: 628 if (UDL_CMD_BUFSIZE(sc) > 0) 629 udl_cmd_send_async(sc); 630 udl_cmdq_flush(sc); 631 udl_comp_load(sc); 632 udl_startstop(sc, false); 633 break; 634 default: 635 return EINVAL; 636 } 637 sc->sc_mode = mode; 638 return 0; 639 640 case WSDISPLAYIO_LINEBYTES: 641 *(u_int *)data = sc->sc_width * (sc->sc_depth / 8); 642 return 0; 643 644 #ifdef notyet 645 /* 646 * XXX 647 * OpenBSD allows device specific ioctl()s and use this 648 * UDLIO_DAMAGE for the damage extension ops of X servers. 649 * Before blindly pulling such interfaces, probably we should 650 * discuss how such devices should be handled which have 651 * in-direct framebuffer memories that should be transferred 652 * per updated rectangle regions via MI wscons APIs. 653 */ 654 case UDLIO_DAMAGE: 655 d = (struct udl_ioctl_damage *)data; 656 d->status = UDLIO_STATUS_OK; 657 if (sc->sc_flags & UDL_COMPRDY) 658 udl_draw_rect_comp(sc, d); 659 else 660 udl_draw_rect(sc, d); 661 return 0; 662 #endif 663 } 664 665 return EPASSTHROUGH; 666 } 667 668 static paddr_t 669 udl_mmap(void *v, void *vs, off_t off, int prot) 670 { 671 struct udl_softc *sc = v; 672 vaddr_t vaddr; 673 paddr_t paddr; 674 bool rv __diagused; 675 676 if (off < 0 || off > roundup2(UDL_FBMEM_SIZE(sc), PAGE_SIZE)) 677 return -1; 678 679 /* allocate framebuffer memory */ 680 if (udl_fbmem_alloc(sc) != 0) 681 return -1; 682 683 udl_startstop(sc, false); 684 685 vaddr = (vaddr_t)sc->sc_fbmem + off; 686 rv = pmap_extract(pmap_kernel(), vaddr, &paddr); 687 KASSERT(rv); 688 paddr += vaddr & PGOFSET; 689 690 /* XXX we need MI paddr_t -> mmap cookie API */ 691 #if defined(__aarch64__) 692 #define PTOMMAP(paddr) aarch64_btop((char *)paddr) 693 #elif defined(__alpha__) 694 #define PTOMMAP(paddr) alpha_btop((char *)paddr) 695 #elif defined(__arm__) 696 #define PTOMMAP(paddr) arm_btop((u_long)paddr) 697 #elif defined(__hppa__) 698 #define PTOMMAP(paddr) btop((u_long)paddr) 699 #elif defined(__i386__) || defined(__x86_64__) 700 #define PTOMMAP(paddr) x86_btop(paddr) 701 #elif defined(__m68k__) 702 #define PTOMMAP(paddr) m68k_btop((char *)paddr) 703 #elif defined(__mips__) 704 #define PTOMMAP(paddr) mips_btop(paddr) 705 #elif defined(__powerpc__) 706 #define PTOMMAP(paddr) (paddr) 707 #elif defined(__riscv__) 708 #define PTOMMAP(paddr) riscv_btop(paddr) 709 #elif defined(__sh__) 710 #define PTOMMAP(paddr) sh3_btop(paddr) 711 #elif defined(__sparc__) 712 #define PTOMMAP(paddr) (paddr) 713 #elif defined(__sparc64__) 714 #define PTOMMAP(paddr) atop(paddr) 715 #elif defined(__vax__) 716 #define PTOMMAP(paddr) btop((u_int)paddr) 717 #endif 718 719 return PTOMMAP(paddr); 720 } 721 722 static int 723 udl_alloc_screen(void *v, const struct wsscreen_descr *type, 724 void **cookiep, int *curxp, int *curyp, long *attrp) 725 { 726 struct udl_softc *sc = v; 727 728 if (sc->sc_nscreens > 0) 729 return ENOMEM; 730 731 /* 732 * Initialize rasops. 733 */ 734 sc->sc_ri.ri_depth = sc->sc_depth; 735 sc->sc_ri.ri_bits = NULL; 736 sc->sc_ri.ri_width = sc->sc_width; 737 sc->sc_ri.ri_height = sc->sc_height; 738 sc->sc_ri.ri_stride = sc->sc_width * (sc->sc_depth / 8); 739 sc->sc_ri.ri_hw = sc; 740 sc->sc_ri.ri_flg = 0; 741 742 if (sc->sc_depth == 16) { 743 sc->sc_ri.ri_rnum = 5; 744 sc->sc_ri.ri_gnum = 6; 745 sc->sc_ri.ri_bnum = 5; 746 sc->sc_ri.ri_rpos = 11; 747 sc->sc_ri.ri_gpos = 5; 748 sc->sc_ri.ri_bpos = 0; 749 } 750 751 rasops_init(&sc->sc_ri, sc->sc_height / 8, sc->sc_width / 8); 752 753 sc->sc_ri.ri_ops.cursor = udl_cursor; 754 sc->sc_ri.ri_ops.putchar = udl_putchar; 755 sc->sc_ri.ri_ops.copycols = udl_copycols; 756 sc->sc_ri.ri_ops.erasecols = udl_erasecols; 757 sc->sc_ri.ri_ops.copyrows = udl_copyrows; 758 sc->sc_ri.ri_ops.eraserows = udl_eraserows; 759 760 sc->sc_ri.ri_ops.allocattr(&sc->sc_ri, 0, 0, 0, attrp); 761 762 sc->sc_defaultscreen.ncols = sc->sc_ri.ri_cols; 763 sc->sc_defaultscreen.nrows = sc->sc_ri.ri_rows; 764 sc->sc_defaultscreen.textops = &sc->sc_ri.ri_ops; 765 sc->sc_defaultscreen.fontwidth = sc->sc_ri.ri_font->fontwidth; 766 sc->sc_defaultscreen.fontheight = sc->sc_ri.ri_font->fontheight; 767 sc->sc_defaultscreen.capabilities = sc->sc_ri.ri_caps; 768 769 *cookiep = &sc->sc_ri; 770 *curxp = 0; 771 *curyp = 0; 772 773 sc->sc_nscreens++; 774 775 return 0; 776 } 777 778 static void 779 udl_free_screen(void *v, void *cookie) 780 { 781 struct udl_softc *sc = v; 782 783 sc->sc_nscreens--; 784 } 785 786 static int 787 udl_show_screen(void *v, void *cookie, int waitok, 788 void (*cb)(void *, int, int), void *cbarg) 789 { 790 791 return 0; 792 } 793 794 static inline void 795 udl_cmd_add_decomptable(struct udl_softc *sc, uint8_t *buf, int len) 796 { 797 798 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_DECOMP); 799 udl_cmd_add_4(sc, 0x263871cd); /* magic number */ 800 udl_cmd_add_4(sc, 0x00000200); /* 512 byte chunks */ 801 memcpy(sc->sc_cmd_buf, buf, len); 802 sc->sc_cmd_buf += len; 803 } 804 805 static void 806 udl_comp_load(struct udl_softc *sc) 807 { 808 struct udl_huffman *h; 809 uint8_t *decomp; 810 size_t decomp_size; 811 int error, i; 812 813 if (!(sc->sc_flags & UDL_DECOMPRDY)) { 814 error = firmware_load("udl", "udl-decomp", &decomp, 815 &decomp_size); 816 if (error != 0) { 817 aprint_error_dev(sc->sc_dev, 818 "error %d, could not read decomp table %s!\n", 819 error, "udl-decomp"); 820 return; 821 } 822 udl_cmd_add_decomptable(sc, decomp, decomp_size); 823 firmware_free(decomp, decomp_size); 824 if (udl_cmd_send(sc) != 0) 825 return; 826 sc->sc_flags |= UDL_DECOMPRDY; 827 } 828 829 if (!(sc->sc_flags & UDL_COMPRDY)) { 830 error = firmware_load("udl", "udl-comp", &sc->sc_huffman, 831 &sc->sc_huffman_size); 832 if (error != 0) { 833 aprint_error_dev(sc->sc_dev, 834 "error %d, could not read huffman table %s!\n", 835 error, "udl-comp"); 836 return; 837 } 838 h = (struct udl_huffman *)sc->sc_huffman; 839 for (i = 0; i < UDL_HUFFMAN_RECORDS; i++) 840 h[i].bit_pattern = be32toh(h[i].bit_pattern); 841 sc->sc_huffman_base = sc->sc_huffman + UDL_HUFFMAN_BASE; 842 sc->sc_flags |= UDL_COMPRDY; 843 } 844 } 845 846 static void 847 udl_comp_unload(struct udl_softc *sc) 848 { 849 850 if (sc->sc_flags & UDL_COMPRDY) { 851 firmware_free(sc->sc_huffman, sc->sc_huffman_size); 852 sc->sc_huffman = NULL; 853 sc->sc_huffman_size = 0; 854 sc->sc_flags &= ~UDL_COMPRDY; 855 } 856 } 857 858 static int 859 udl_fbmem_alloc(struct udl_softc *sc) 860 { 861 862 mutex_enter(&sc->sc_thread_mtx); 863 if (sc->sc_fbmem == NULL) 864 sc->sc_fbmem = kmem_zalloc(UDL_FBMEM_SIZE(sc), KM_SLEEP); 865 if (sc->sc_fbmem_prev == NULL) 866 sc->sc_fbmem_prev = kmem_zalloc(UDL_FBMEM_SIZE(sc), KM_SLEEP); 867 mutex_exit(&sc->sc_thread_mtx); 868 869 return 0; 870 } 871 872 static void 873 udl_fbmem_free(struct udl_softc *sc) 874 { 875 876 mutex_enter(&sc->sc_thread_mtx); 877 if (sc->sc_fbmem != NULL) { 878 kmem_free(sc->sc_fbmem, UDL_FBMEM_SIZE(sc)); 879 sc->sc_fbmem = NULL; 880 } 881 if (sc->sc_fbmem_prev != NULL) { 882 kmem_free(sc->sc_fbmem_prev, UDL_FBMEM_SIZE(sc)); 883 sc->sc_fbmem_prev = NULL; 884 } 885 mutex_exit(&sc->sc_thread_mtx); 886 } 887 888 static int 889 udl_cmdq_alloc(struct udl_softc *sc) 890 { 891 struct udl_cmdq *cmdq; 892 int i; 893 894 TAILQ_INIT(&sc->sc_freecmd); 895 TAILQ_INIT(&sc->sc_xfercmd); 896 897 for (i = 0; i < UDL_NCMDQ; i++) { 898 cmdq = &sc->sc_cmdq[i]; 899 900 cmdq->cq_sc = sc; 901 902 int err = usbd_create_xfer(sc->sc_tx_pipeh, 903 UDL_CMD_BUFFER_SIZE, 0, 0, &cmdq->cq_xfer); 904 if (err) { 905 aprint_error_dev(sc->sc_dev, 906 "%s: can't allocate xfer handle!\n", __func__); 907 goto error; 908 } 909 910 cmdq->cq_buf = usbd_get_buffer(cmdq->cq_xfer); 911 912 TAILQ_INSERT_TAIL(&sc->sc_freecmd, cmdq, cq_chain); 913 } 914 915 return 0; 916 917 error: 918 udl_cmdq_free(sc); 919 return -1; 920 } 921 922 static void 923 udl_cmdq_free(struct udl_softc *sc) 924 { 925 struct udl_cmdq *cmdq; 926 int i; 927 928 for (i = 0; i < UDL_NCMDQ; i++) { 929 cmdq = &sc->sc_cmdq[i]; 930 931 if (cmdq->cq_xfer != NULL) { 932 usbd_destroy_xfer(cmdq->cq_xfer); 933 cmdq->cq_xfer = NULL; 934 cmdq->cq_buf = NULL; 935 } 936 } 937 } 938 939 static struct udl_cmdq * 940 udl_cmdq_get(struct udl_softc *sc) 941 { 942 struct udl_cmdq *cmdq; 943 944 cmdq = TAILQ_FIRST(&sc->sc_freecmd); 945 if (cmdq != NULL) { 946 TAILQ_REMOVE(&sc->sc_freecmd, cmdq, cq_chain); 947 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_get); 948 } 949 950 return cmdq; 951 } 952 953 static void 954 udl_cmdq_put(struct udl_softc *sc, struct udl_cmdq *cmdq) 955 { 956 957 TAILQ_INSERT_TAIL(&sc->sc_freecmd, cmdq, cq_chain); 958 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_put); 959 } 960 961 static void 962 udl_cmdq_flush(struct udl_softc *sc) 963 { 964 965 mutex_enter(&sc->sc_mtx); 966 while (TAILQ_FIRST(&sc->sc_xfercmd) != NULL) 967 cv_wait(&sc->sc_cv, &sc->sc_mtx); 968 mutex_exit(&sc->sc_mtx); 969 } 970 971 static void 972 udl_cursor(void *cookie, int on, int row, int col) 973 { 974 struct rasops_info *ri = cookie; 975 struct udl_softc *sc = ri->ri_hw; 976 int x, y, width, height; 977 978 if (ri->ri_flg & RI_CURSOR) 979 udl_restore_char(ri); 980 981 ri->ri_crow = row; 982 ri->ri_ccol = col; 983 984 if (on != 0) { 985 ri->ri_flg |= RI_CURSOR; 986 987 x = col * ri->ri_font->fontwidth; 988 y = row * ri->ri_font->fontheight; 989 width = ri->ri_font->fontwidth; 990 height = ri->ri_font->fontheight; 991 992 /* save the last character block to off-screen */ 993 udl_copy_rect(sc, x, y, 0, sc->sc_offscreen, width, height); 994 995 /* draw cursor */ 996 udl_fill_rect(sc, 0xffff, x, y, width, 1); 997 udl_fill_rect(sc, 0xffff, x, y + 1, 1, height - 2); 998 udl_fill_rect(sc, 0xffff, x + width - 1, y + 1, 1, height - 2); 999 udl_fill_rect(sc, 0xffff, x, y + height - 1, width, 1); 1000 1001 udl_cmd_send_async(sc); 1002 } else 1003 ri->ri_flg &= ~RI_CURSOR; 1004 } 1005 1006 static void 1007 udl_putchar(void *cookie, int row, int col, u_int uc, long attr) 1008 { 1009 struct rasops_info *ri = cookie; 1010 struct udl_softc *sc = ri->ri_hw; 1011 uint16_t rgb16[2]; 1012 int fg, bg, underline, x, y, width, height; 1013 1014 rasops_unpack_attr(attr, &fg, &bg, &underline); 1015 rgb16[1] = (uint16_t)ri->ri_devcmap[fg]; 1016 rgb16[0] = (uint16_t)ri->ri_devcmap[bg]; 1017 1018 x = col * ri->ri_font->fontwidth; 1019 y = row * ri->ri_font->fontheight; 1020 width = ri->ri_font->fontwidth; 1021 height = ri->ri_font->fontheight; 1022 1023 if (uc == ' ') { 1024 /* 1025 * Writing a block for the space character instead rendering 1026 * it from font bits is more slim. 1027 */ 1028 udl_fill_rect(sc, rgb16[0], x, y, width, height); 1029 } else { 1030 /* render a character from font bits */ 1031 udl_draw_char(ri, rgb16, uc, x, y); 1032 } 1033 1034 if (underline != 0) 1035 udl_fill_rect(sc, rgb16[1], x, y + height - 1, width, 1); 1036 1037 #if 0 1038 udl_cmd_send_async(sc); 1039 #endif 1040 } 1041 1042 static void 1043 udl_copycols(void *cookie, int row, int src, int dst, int num) 1044 { 1045 struct rasops_info *ri = cookie; 1046 struct udl_softc *sc = ri->ri_hw; 1047 int sx, dx, y, width, height; 1048 1049 sx = src * ri->ri_font->fontwidth; 1050 dx = dst * ri->ri_font->fontwidth; 1051 y = row * ri->ri_font->fontheight; 1052 width = num * ri->ri_font->fontwidth; 1053 height = ri->ri_font->fontheight; 1054 1055 /* copy row block to off-screen first to fix overlay-copy problem */ 1056 udl_copy_rect(sc, sx, y, 0, sc->sc_offscreen, width, height); 1057 1058 /* copy row block back from off-screen now */ 1059 udl_copy_rect(sc, 0, sc->sc_offscreen, dx, y, width, height); 1060 #if 0 1061 udl_cmd_send_async(sc); 1062 #endif 1063 } 1064 1065 static void 1066 udl_erasecols(void *cookie, int row, int col, int num, long attr) 1067 { 1068 struct rasops_info *ri = cookie; 1069 struct udl_softc *sc = ri->ri_hw; 1070 uint16_t rgb16; 1071 int fg, bg, x, y, width, height; 1072 1073 rasops_unpack_attr(attr, &fg, &bg, NULL); 1074 rgb16 = (uint16_t)ri->ri_devcmap[bg]; 1075 1076 x = col * ri->ri_font->fontwidth; 1077 y = row * ri->ri_font->fontheight; 1078 width = num * ri->ri_font->fontwidth; 1079 height = ri->ri_font->fontheight; 1080 1081 udl_fill_rect(sc, rgb16, x, y, width, height); 1082 #if 0 1083 udl_cmd_send_async(sc); 1084 #endif 1085 } 1086 1087 static void 1088 udl_copyrows(void *cookie, int src, int dst, int num) 1089 { 1090 struct rasops_info *ri = cookie; 1091 struct udl_softc *sc = ri->ri_hw; 1092 int sy, ey, dy, width, height; 1093 1094 width = ri->ri_emuwidth; 1095 height = ri->ri_font->fontheight; 1096 1097 if (dst < src) { 1098 sy = src * height; 1099 ey = (src + num) * height; 1100 dy = dst * height; 1101 1102 while (sy < ey) { 1103 udl_copy_rect(sc, 0, sy, 0, dy, width, height); 1104 sy += height; 1105 dy += height; 1106 } 1107 } else { 1108 sy = (src + num) * height; 1109 ey = src * height; 1110 dy = (dst + num) * height; 1111 1112 while (sy > ey) { 1113 sy -= height; 1114 dy -= height; 1115 udl_copy_rect(sc, 0, sy, 0, dy, width, height); 1116 } 1117 } 1118 #if 0 1119 udl_cmd_send_async(sc); 1120 #endif 1121 } 1122 1123 static void 1124 udl_eraserows(void *cookie, int row, int num, long attr) 1125 { 1126 struct rasops_info *ri = cookie; 1127 struct udl_softc *sc = ri->ri_hw; 1128 uint16_t rgb16; 1129 int fg, bg, y, width, height; 1130 1131 rasops_unpack_attr(attr, &fg, &bg, NULL); 1132 rgb16 = (uint16_t)ri->ri_devcmap[bg]; 1133 1134 y = row * ri->ri_font->fontheight; 1135 width = ri->ri_emuwidth; 1136 height = num * ri->ri_font->fontheight; 1137 1138 udl_fill_rect(sc, rgb16, 0, y, width, height); 1139 #if 0 1140 udl_cmd_send_async(sc); 1141 #endif 1142 } 1143 1144 static void 1145 udl_restore_char(struct rasops_info *ri) 1146 { 1147 struct udl_softc *sc = ri->ri_hw; 1148 int x, y, width, height; 1149 1150 x = ri->ri_ccol * ri->ri_font->fontwidth; 1151 y = ri->ri_crow * ri->ri_font->fontheight; 1152 width = ri->ri_font->fontwidth; 1153 height = ri->ri_font->fontheight; 1154 1155 /* restore the last saved character from off-screen */ 1156 udl_copy_rect(sc, 0, sc->sc_offscreen, x, y, width, height); 1157 } 1158 1159 static void 1160 udl_draw_char(struct rasops_info *ri, uint16_t *rgb16, u_int uc, int x, int y) 1161 { 1162 struct udl_softc *sc = ri->ri_hw; 1163 struct wsdisplay_font *font = ri->ri_font; 1164 uint32_t fontbits; 1165 uint16_t pixels[32]; 1166 uint8_t *fontbase; 1167 int i, soff, eoff; 1168 1169 soff = y * sc->sc_width + x; 1170 eoff = (y + font->fontheight) * sc->sc_width + x; 1171 fontbase = (uint8_t *)font->data + (uc - font->firstchar) * 1172 ri->ri_fontscale; 1173 1174 while (soff < eoff) { 1175 fontbits = 0; 1176 switch (font->stride) { 1177 case 4: 1178 fontbits |= fontbase[3]; 1179 /* FALLTHROUGH */ 1180 case 3: 1181 fontbits |= fontbase[2] << 8; 1182 /* FALLTHROUGH */ 1183 case 2: 1184 fontbits |= fontbase[1] << 16; 1185 /* FALLTHROUGH */ 1186 case 1: 1187 fontbits |= fontbase[0] << 24; 1188 } 1189 fontbase += font->stride; 1190 1191 for (i = 0; i < font->fontwidth; i++) { 1192 pixels[i] = rgb16[(fontbits >> 31) & 1]; 1193 fontbits <<= 1; 1194 } 1195 1196 udl_draw_line(sc, pixels, soff, font->fontwidth); 1197 soff += sc->sc_width; 1198 } 1199 } 1200 1201 static void 1202 udl_copy_rect(struct udl_softc *sc, int sx, int sy, int dx, int dy, int width, 1203 int height) 1204 { 1205 int sbase, soff, ebase, eoff, dbase, doff, width_cur; 1206 1207 sbase = sy * sc->sc_width; 1208 ebase = (sy + height) * sc->sc_width; 1209 dbase = dy * sc->sc_width; 1210 1211 while (width > 0) { 1212 soff = sbase + sx; 1213 eoff = ebase + sx; 1214 doff = dbase + dx; 1215 1216 if (width >= UDL_CMD_WIDTH_MAX) 1217 width_cur = UDL_CMD_WIDTH_MAX; 1218 else 1219 width_cur = width; 1220 1221 while (soff < eoff) { 1222 udl_copy_line(sc, soff, doff, width_cur); 1223 soff += sc->sc_width; 1224 doff += sc->sc_width; 1225 } 1226 1227 sx += width_cur; 1228 dx += width_cur; 1229 width -= width_cur; 1230 } 1231 } 1232 1233 static void 1234 udl_fill_rect(struct udl_softc *sc, uint16_t rgb16, int x, int y, int width, 1235 int height) 1236 { 1237 int sbase, soff, ebase, eoff, width_cur; 1238 1239 sbase = y * sc->sc_width; 1240 ebase = (y + height) * sc->sc_width; 1241 1242 while (width > 0) { 1243 soff = sbase + x; 1244 eoff = ebase + x; 1245 1246 if (width >= UDL_CMD_WIDTH_MAX) 1247 width_cur = UDL_CMD_WIDTH_MAX; 1248 else 1249 width_cur = width; 1250 1251 while (soff < eoff) { 1252 udl_fill_line(sc, rgb16, soff, width_cur); 1253 soff += sc->sc_width; 1254 } 1255 1256 x += width_cur; 1257 width -= width_cur; 1258 } 1259 } 1260 1261 #ifdef notyet 1262 static void 1263 udl_draw_rect(struct udl_softc *sc, struct udl_ioctl_damage *d) 1264 { 1265 int sbase, soff, ebase, eoff, x, y, width, width_cur, height; 1266 1267 x = d->x1; 1268 y = d->y1; 1269 width = d->x2 - d->x1; 1270 height = d->y2 - d->y1; 1271 sbase = y * sc->sc_width; 1272 ebase = (y + height) * sc->sc_width; 1273 1274 while (width > 0) { 1275 soff = sbase + x; 1276 eoff = ebase + x; 1277 1278 if (width >= UDL_CMD_WIDTH_MAX) 1279 width_cur = UDL_CMD_WIDTH_MAX; 1280 else 1281 width_cur = width; 1282 1283 while (soff < eoff) { 1284 udl_draw_line(sc, (uint16_t *)sc->sc_fbmem + soff, 1285 soff, width_cur); 1286 soff += sc->sc_width; 1287 } 1288 1289 x += width_cur; 1290 width -= width_cur; 1291 } 1292 1293 udl_cmd_send_async(sc); 1294 } 1295 1296 static void 1297 udl_draw_rect_comp(struct udl_softc *sc, struct udl_ioctl_damage *d) 1298 { 1299 int soff, eoff, x, y, width, height; 1300 1301 x = d->x1; 1302 y = d->y1; 1303 width = d->x2 - d->x1; 1304 height = d->y2 - d->y1; 1305 soff = y * sc->sc_width + x; 1306 eoff = (y + height) * sc->sc_width + x; 1307 1308 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1309 sc->sc_cmd_cblen = 4; 1310 1311 while (soff < eoff) { 1312 udl_draw_line_comp(sc, (uint16_t *)sc->sc_fbmem + soff, soff, 1313 width); 1314 soff += sc->sc_width; 1315 } 1316 1317 udl_cmd_send_async(sc); 1318 } 1319 #endif 1320 1321 static inline void 1322 udl_copy_line(struct udl_softc *sc, int soff, int doff, int width) 1323 { 1324 1325 if (__predict_false((UDL_CMD_BUFSIZE(sc) + UDL_CMD_COPY_SIZE + 2) > 1326 UDL_CMD_BUFFER_SIZE)) 1327 udl_cmd_send_async(sc); 1328 1329 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_COPY16); 1330 udl_cmd_add_4(sc, ((doff * 2) << 8) | (width & 0xff)); 1331 1332 udl_cmd_add_3(sc, soff * 2); 1333 } 1334 1335 static inline void 1336 udl_fill_line(struct udl_softc *sc, uint16_t rgb16, int off, int width) 1337 { 1338 1339 if (__predict_false((UDL_CMD_BUFSIZE(sc) + UDL_CMD_FILL_SIZE + 2) > 1340 UDL_CMD_BUFFER_SIZE)) 1341 udl_cmd_send_async(sc); 1342 1343 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_RLE16); 1344 udl_cmd_add_4(sc, ((off * 2) << 8) | (width & 0xff)); 1345 1346 udl_cmd_add_1(sc, width); 1347 udl_cmd_add_2(sc, rgb16); 1348 } 1349 1350 static inline void 1351 udl_draw_line(struct udl_softc *sc, uint16_t *buf, int off, int width) 1352 { 1353 1354 if (__predict_false( 1355 (UDL_CMD_BUFSIZE(sc) + UDL_CMD_DRAW_SIZE(width) + 2) > 1356 UDL_CMD_BUFFER_SIZE)) 1357 udl_cmd_send_async(sc); 1358 1359 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_WRITE16); 1360 udl_cmd_add_4(sc, ((off * 2) << 8) | (width & 0xff)); 1361 1362 udl_cmd_add_buf(sc, buf, width); 1363 } 1364 1365 #ifdef notyet 1366 static inline int 1367 udl_cmd_add_buf_comp(struct udl_softc *sc, uint16_t *buf, int width) 1368 { 1369 struct udl_huffman *h; 1370 uint16_t *startp, *endp; 1371 uint32_t bit_pattern; 1372 uint16_t prev; 1373 int16_t diff; 1374 uint8_t bit_count, bit_pos, bit_rem, curlen; 1375 1376 startp = buf; 1377 if (width >= UDL_CMD_WIDTH_MAX) 1378 endp = buf + UDL_CMD_WIDTH_MAX; 1379 else 1380 endp = buf + width; 1381 1382 prev = bit_pos = *sc->sc_cmd_buf = 0; 1383 bit_rem = 8; 1384 1385 /* 1386 * Generate a sub-block with maximal 256 pixels compressed data. 1387 */ 1388 while (buf < endp) { 1389 /* get difference between current and previous pixel */ 1390 diff = *buf - prev; 1391 1392 /* get the huffman difference bit sequence */ 1393 h = (struct udl_huffman *)sc->sc_huffman_base + diff; 1394 bit_count = h->bit_count; 1395 bit_pattern = h->bit_pattern; 1396 1397 curlen = (bit_pos + bit_count + 7) / 8; 1398 if (__predict_false((sc->sc_cmd_cblen + curlen + 1) > 1399 UDL_CMD_COMP_BLOCK_SIZE)) 1400 break; 1401 1402 /* generate one pixel compressed data */ 1403 while (bit_count >= bit_rem) { 1404 *sc->sc_cmd_buf++ |= 1405 (bit_pattern & ((1 << bit_rem) - 1)) << bit_pos; 1406 *sc->sc_cmd_buf = 0; 1407 sc->sc_cmd_cblen++; 1408 bit_count -= bit_rem; 1409 bit_pattern >>= bit_rem; 1410 bit_pos = 0; 1411 bit_rem = 8; 1412 } 1413 1414 if (bit_count > 0) { 1415 *sc->sc_cmd_buf |= 1416 (bit_pattern & ((1 << bit_count) - 1)) << bit_pos; 1417 bit_pos += bit_count; 1418 bit_rem -= bit_count; 1419 } 1420 1421 prev = *buf++; 1422 } 1423 1424 /* 1425 * If we have bits left in our last byte, round up to the next 1426 * byte, so we don't overwrite them. 1427 */ 1428 if (bit_pos > 0) { 1429 sc->sc_cmd_buf++; 1430 sc->sc_cmd_cblen++; 1431 } 1432 1433 /* return how many pixels we have compressed */ 1434 return buf - startp; 1435 } 1436 1437 static inline void 1438 udl_draw_line_comp(struct udl_softc *sc, uint16_t *buf, int off, int width) 1439 { 1440 uint8_t *widthp; 1441 int width_cur; 1442 1443 while (width > 0) { 1444 if (__predict_false( 1445 (sc->sc_cmd_cblen + UDL_CMD_COMP_MIN_SIZE + 1) > 1446 UDL_CMD_COMP_BLOCK_SIZE)) { 1447 if (UDL_CMD_BUFSIZE(sc) < UDL_CMD_COMP_THRESHOLD) { 1448 while (sc->sc_cmd_cblen < 1449 UDL_CMD_COMP_BLOCK_SIZE) { 1450 *sc->sc_cmd_buf++ = 0; 1451 sc->sc_cmd_cblen++; 1452 } 1453 } else 1454 udl_cmd_send_async(sc); 1455 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1456 sc->sc_cmd_cblen = 4; 1457 } 1458 1459 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | 1460 (UDL_BULK_CMD_FB_WRITE16 | UDL_BULK_CMD_FB_COMP)); 1461 udl_cmd_add_4(sc, (off * 2) << 8); 1462 1463 widthp = sc->sc_cmd_buf - 1; 1464 1465 sc->sc_cmd_cblen += UDL_CMD_HEADER_SIZE; 1466 1467 width_cur = udl_cmd_add_buf_comp(sc, buf, width); 1468 1469 *widthp = width_cur; 1470 buf += width_cur; 1471 off += width_cur; 1472 width -= width_cur; 1473 } 1474 } 1475 #endif 1476 1477 static int 1478 udl_cmd_send(struct udl_softc *sc) 1479 { 1480 struct udl_cmdq *cmdq; 1481 usbd_status error; 1482 uint32_t len; 1483 1484 cmdq = sc->sc_cmd_cur; 1485 1486 /* mark end of command stack */ 1487 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_EOC); 1488 1489 len = UDL_CMD_BUFSIZE(sc); 1490 1491 /* do xfer */ 1492 error = usbd_bulk_transfer(cmdq->cq_xfer, sc->sc_tx_pipeh, 0, 1493 USBD_NO_TIMEOUT, cmdq->cq_buf, &len); 1494 1495 UDL_CMD_BUFINIT(sc); 1496 1497 if (error != USBD_NORMAL_COMPLETION) { 1498 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1499 usbd_errstr(error)); 1500 return -1; 1501 } 1502 1503 return 0; 1504 } 1505 1506 static void 1507 udl_cmd_send_async(struct udl_softc *sc) 1508 { 1509 struct udl_cmdq *cmdq; 1510 usbd_status error; 1511 uint32_t len; 1512 1513 #if 1 1514 /* 1515 * XXX 1516 * All tty ops for wsemul are called with tty_lock spin mutex held, 1517 * so we can't call cv_wait(9) here to acquire a free buffer. 1518 * For now, all commands and data for wsemul ops are discarded 1519 * if there is no free command buffer, and then screen text might 1520 * be corrupted on large scroll ops etc. 1521 * 1522 * Probably we have to reorganize the giant tty_lock mutex, or 1523 * change wsdisplay APIs (especially wsdisplaystart()) to return 1524 * a number of actually handled characters as OpenBSD does, but 1525 * the latter one requires whole API changes around rasops(9) etc. 1526 */ 1527 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 1528 if (TAILQ_FIRST(&sc->sc_freecmd) == NULL) { 1529 UDL_CMD_BUFINIT(sc); 1530 return; 1531 } 1532 } 1533 #endif 1534 1535 cmdq = sc->sc_cmd_cur; 1536 1537 /* mark end of command stack */ 1538 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_EOC); 1539 1540 len = UDL_CMD_BUFSIZE(sc); 1541 1542 /* do xfer */ 1543 mutex_enter(&sc->sc_mtx); 1544 usbd_setup_xfer(cmdq->cq_xfer, cmdq, cmdq->cq_buf, 1545 len, 0, USBD_NO_TIMEOUT, udl_cmd_send_async_cb); 1546 mutex_exit(&sc->sc_mtx); 1547 error = usbd_transfer(cmdq->cq_xfer); 1548 mutex_enter(&sc->sc_mtx); 1549 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1550 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1551 usbd_errstr(error)); 1552 mutex_exit(&sc->sc_mtx); 1553 goto end; 1554 } 1555 1556 TAILQ_INSERT_TAIL(&sc->sc_xfercmd, cmdq, cq_chain); 1557 cmdq = udl_cmdq_get(sc); 1558 mutex_exit(&sc->sc_mtx); 1559 while (cmdq == NULL) { 1560 int err; 1561 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_wait); 1562 mutex_enter(&sc->sc_mtx); 1563 err = cv_timedwait(&sc->sc_cv, &sc->sc_mtx, 1564 mstohz(100) /* XXX is this needed? */); 1565 if (err != 0) { 1566 DPRINTF(("%s: %s: cv timeout (error = %d)\n", 1567 device_xname(sc->sc_dev), __func__, err)); 1568 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_timeout); 1569 } 1570 cmdq = udl_cmdq_get(sc); 1571 mutex_exit(&sc->sc_mtx); 1572 } 1573 sc->sc_cmd_cur = cmdq; 1574 end: 1575 UDL_CMD_BUFINIT(sc); 1576 } 1577 1578 static void 1579 udl_cmd_send_async_cb(struct usbd_xfer *xfer, void * priv, 1580 usbd_status status) 1581 { 1582 struct udl_cmdq *cmdq = priv; 1583 struct udl_softc *sc = cmdq->cq_sc; 1584 1585 if (status != USBD_NORMAL_COMPLETION) { 1586 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1587 usbd_errstr(status)); 1588 1589 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1590 return; 1591 if (status == USBD_STALLED) 1592 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 1593 } 1594 1595 mutex_enter(&sc->sc_mtx); 1596 TAILQ_REMOVE(&sc->sc_xfercmd, cmdq, cq_chain); 1597 udl_cmdq_put(sc, cmdq); 1598 1599 /* signal xfer op that sleeps for a free xfer buffer */ 1600 cv_signal(&sc->sc_cv); 1601 mutex_exit(&sc->sc_mtx); 1602 } 1603 1604 static int 1605 udl_ctrl_msg(struct udl_softc *sc, uint8_t rt, uint8_t r, uint16_t index, 1606 uint16_t value, uint8_t *buf, uint16_t len) 1607 { 1608 usb_device_request_t req; 1609 usbd_status error; 1610 1611 req.bmRequestType = rt; 1612 req.bRequest = r; 1613 USETW(req.wIndex, index); 1614 USETW(req.wValue, value); 1615 USETW(req.wLength, len); 1616 1617 error = usbd_do_request(sc->sc_udev, &req, buf); 1618 if (error != USBD_NORMAL_COMPLETION) { 1619 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1620 usbd_errstr(error)); 1621 return -1; 1622 } 1623 1624 return 0; 1625 } 1626 1627 static int 1628 udl_init(struct udl_softc *sc) 1629 { 1630 static uint8_t key[16] = { 1631 0x57, 0xcd, 0xdc, 0xa7, 0x1c, 0x88, 0x5e, 0x15, 1632 0x60, 0xfe, 0xc6, 0x97, 0x16, 0x3d, 0x47, 0xf2 1633 }; 1634 uint8_t status[4], val; 1635 1636 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_STATUS, 1637 0x0000, 0x0000, status, sizeof(status)) != 0) 1638 return -1; 1639 1640 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_1, 1641 0xc484, 0x0000, &val, 1) != 0) 1642 return -1; 1643 1644 val = 1; 1645 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_WRITE_1, 1646 0xc41f, 0x0000, &val, 1) != 0) 1647 return -1; 1648 1649 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_SET_KEY, 1650 0x0000, 0x0000, key, sizeof(key)) != 0) 1651 return -1; 1652 1653 val = 0; 1654 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_WRITE_1, 1655 0xc40b, 0x0000, &val, 1) != 0) 1656 return -1; 1657 1658 return 0; 1659 } 1660 1661 static void 1662 udl_read_edid(struct udl_softc *sc) 1663 { 1664 uint8_t buf[64], edid[128]; 1665 int offset; 1666 1667 memset(&sc->sc_ei, 0, sizeof(struct edid_info)); 1668 1669 offset = 0; 1670 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1671 0x00a1, (offset << 8), buf, 64) != 0) 1672 return; 1673 if (buf[0] != 0) 1674 return; 1675 memcpy(&edid[offset], &buf[1], 63); 1676 offset += 63; 1677 1678 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1679 0x00a1, (offset << 8), buf, 64) != 0) 1680 return; 1681 if (buf[0] != 0) 1682 return; 1683 memcpy(&edid[offset], &buf[1], 63); 1684 offset += 63; 1685 1686 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1687 0x00a1, (offset << 8), buf, 3) != 0) 1688 return; 1689 if (buf[0] != 0) 1690 return; 1691 memcpy(&edid[offset], &buf[1], 2); 1692 1693 if (edid_parse(edid, &sc->sc_ei) == 0) { 1694 #ifdef UDL_DEBUG 1695 edid_print(&sc->sc_ei); 1696 #endif 1697 } 1698 } 1699 1700 static void 1701 udl_set_address(struct udl_softc *sc, int start16, int stride16, int start8, 1702 int stride8) 1703 { 1704 udl_reg_write_1(sc, UDL_REG_SYNC, 0x00); 1705 udl_reg_write_3(sc, UDL_REG_ADDR_START16, start16); 1706 udl_reg_write_3(sc, UDL_REG_ADDR_STRIDE16, stride16); 1707 udl_reg_write_3(sc, UDL_REG_ADDR_START8, start8); 1708 udl_reg_write_3(sc, UDL_REG_ADDR_STRIDE8, stride8); 1709 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1710 } 1711 1712 static void 1713 udl_blank(struct udl_softc *sc, int blank) 1714 { 1715 1716 if (blank != 0) 1717 udl_reg_write_1(sc, UDL_REG_BLANK, UDL_REG_BLANK_ON); 1718 else 1719 udl_reg_write_1(sc, UDL_REG_BLANK, UDL_REG_BLANK_OFF); 1720 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1721 } 1722 1723 static uint16_t 1724 udl_lfsr(uint16_t count) 1725 { 1726 uint16_t val = 0xffff; 1727 1728 while (count > 0) { 1729 val = (uint16_t)(val << 1) | ((uint16_t)( 1730 (uint16_t)(val << 0) ^ 1731 (uint16_t)(val << 11) ^ 1732 (uint16_t)(val << 13) ^ 1733 (uint16_t)(val << 14) 1734 ) >> 15); 1735 count--; 1736 } 1737 1738 return val; 1739 } 1740 1741 static int 1742 udl_set_resolution(struct udl_softc *sc, const struct videomode *vmp) 1743 { 1744 uint16_t val; 1745 int start16, stride16, start8, stride8; 1746 1747 /* set video memory offsets */ 1748 start16 = 0; 1749 stride16 = sc->sc_width * 2; 1750 start8 = stride16 * sc->sc_height; 1751 stride8 = sc->sc_width; 1752 udl_set_address(sc, start16, stride16, start8, stride8); 1753 1754 /* write resolution values */ 1755 udl_reg_write_1(sc, UDL_REG_SYNC, 0x00); 1756 udl_reg_write_1(sc, UDL_REG_COLORDEPTH, UDL_REG_COLORDEPTH_16); 1757 val = vmp->htotal - vmp->hsync_start; 1758 udl_reg_write_2(sc, UDL_REG_XDISPLAYSTART, udl_lfsr(val)); 1759 val += vmp->hdisplay; 1760 udl_reg_write_2(sc, UDL_REG_XDISPLAYEND, udl_lfsr(val)); 1761 val = vmp->vtotal - vmp->vsync_start; 1762 udl_reg_write_2(sc, UDL_REG_YDISPLAYSTART, udl_lfsr(val)); 1763 val += vmp->vdisplay; 1764 udl_reg_write_2(sc, UDL_REG_YDISPLAYEND, udl_lfsr(val)); 1765 val = vmp->htotal - 1; 1766 udl_reg_write_2(sc, UDL_REG_XENDCOUNT, udl_lfsr(val)); 1767 val = vmp->hsync_end - vmp->hsync_start + 1; 1768 if (vmp->flags & VID_PHSYNC) { 1769 udl_reg_write_2(sc, UDL_REG_HSYNCSTART, udl_lfsr(1)); 1770 udl_reg_write_2(sc, UDL_REG_HSYNCEND, udl_lfsr(val)); 1771 } else { 1772 udl_reg_write_2(sc, UDL_REG_HSYNCSTART, udl_lfsr(val)); 1773 udl_reg_write_2(sc, UDL_REG_HSYNCEND, udl_lfsr(1)); 1774 } 1775 val = vmp->hdisplay; 1776 udl_reg_write_2(sc, UDL_REG_HPIXELS, val); 1777 val = vmp->vtotal; 1778 udl_reg_write_2(sc, UDL_REG_YENDCOUNT, udl_lfsr(val)); 1779 val = vmp->vsync_end - vmp->vsync_start; 1780 if (vmp->flags & VID_PVSYNC) { 1781 udl_reg_write_2(sc, UDL_REG_VSYNCSTART, udl_lfsr(0)); 1782 udl_reg_write_2(sc, UDL_REG_VSYNCEND, udl_lfsr(val)); 1783 } else { 1784 udl_reg_write_2(sc, UDL_REG_VSYNCSTART, udl_lfsr(val)); 1785 udl_reg_write_2(sc, UDL_REG_VSYNCEND, udl_lfsr(0)); 1786 } 1787 val = vmp->vdisplay; 1788 udl_reg_write_2(sc, UDL_REG_VPIXELS, val); 1789 val = vmp->dot_clock / 5; 1790 udl_reg_write_2(sc, UDL_REG_PIXELCLOCK5KHZ, bswap16(val)); 1791 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1792 1793 if (udl_cmd_send(sc) != 0) 1794 return -1; 1795 1796 /* clear screen */ 1797 udl_fill_rect(sc, 0, 0, 0, sc->sc_width, sc->sc_height); 1798 1799 if (udl_cmd_send(sc) != 0) 1800 return -1; 1801 1802 /* show framebuffer content */ 1803 udl_blank(sc, 0); 1804 1805 if (udl_cmd_send(sc) != 0) 1806 return -1; 1807 1808 sc->sc_blank = WSDISPLAYIO_VIDEO_ON; 1809 1810 return 0; 1811 } 1812 1813 static const struct videomode * 1814 udl_videomode_lookup(const char *name) 1815 { 1816 int i; 1817 1818 for (i = 0; i < videomode_count; i++) 1819 if (strcmp(name, videomode_list[i].name) == 0) 1820 return &videomode_list[i]; 1821 1822 return NULL; 1823 } 1824 1825 static void 1826 udl_update_thread(void *v) 1827 { 1828 struct udl_softc *sc = v; 1829 uint16_t *fb, *fbcopy; 1830 int offs, stride, count = 0; 1831 1832 mutex_enter(&sc->sc_thread_mtx); 1833 1834 for (;;) { 1835 if (sc->sc_dying == true) { 1836 mutex_exit(&sc->sc_thread_mtx); 1837 kthread_exit(0); 1838 } 1839 1840 if (sc->sc_thread_stop == true || sc->sc_fbmem == NULL || 1841 sc->sc_fbmem_prev == NULL || sc->sc_width <= 0) 1842 goto thread_wait; 1843 1844 if (sc->sc_clear == true) 1845 count = 0; 1846 sc->sc_clear = false; 1847 1848 stride = uimin(sc->sc_width, UDL_CMD_WIDTH_MAX - 8); 1849 stride /= 8; 1850 fb = (uint16_t *)sc->sc_fbmem; 1851 fbcopy = (uint16_t *)sc->sc_fbmem_prev; 1852 for (offs = 0; offs < (sc->sc_height * sc->sc_width) - stride; 1853 offs += stride) { 1854 if (count % (hz / 5) == 0 || memcmp(&fb[offs], 1855 &fbcopy[offs], stride * sizeof(uint16_t)) != 0) { 1856 udl_draw_line(sc, &fb[offs], offs, stride); 1857 memcpy(&fbcopy[offs], &fb[offs], stride * 1858 sizeof(uint16_t)); 1859 } 1860 } 1861 count++; 1862 1863 kpause("udlslp", false, 1, &sc->sc_thread_mtx); 1864 continue; 1865 1866 thread_wait: 1867 cv_wait(&sc->sc_thread_cv, &sc->sc_thread_mtx); 1868 } 1869 } 1870 1871 static inline void 1872 udl_startstop(struct udl_softc *sc, bool stop) 1873 { 1874 mutex_enter(&sc->sc_thread_mtx); 1875 sc->sc_thread_stop = stop; 1876 if (!stop) { 1877 sc->sc_clear = true; 1878 cv_broadcast(&sc->sc_thread_cv); 1879 } 1880 mutex_exit(&sc->sc_thread_mtx); 1881 } 1882
Indexes created Wed Sep 24 02:09:48 GMT 2025