udl.c revision 1.35
1 /* $NetBSD: udl.c,v 1.35 2024/10/02 17:22:45 tsutsui 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 1.35 2024/10/02 17:22:45 tsutsui 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_KC002N }, 339 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_MIMO }, 340 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_PLUGABLE }, 341 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_LT1421WIDE }, 342 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_SD_U2VDH }, 343 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_UM7X0 }, 344 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_FYDVI }, 345 { USB_VENDOR_DISPLAYLINK, USB_PRODUCT_DISPLAYLINK_FYDVI2 } 346 }; 347 348 static int 349 udl_match(device_t parent, cfdata_t match, void *aux) 350 { 351 struct usb_attach_arg *uaa = aux; 352 353 if (usb_lookup(udl_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) 354 return UMATCH_VENDOR_PRODUCT; 355 356 return UMATCH_NONE; 357 } 358 359 static void 360 udl_attach(device_t parent, device_t self, void *aux) 361 { 362 struct udl_softc *sc = device_private(self); 363 struct usb_attach_arg *uaa = aux; 364 struct wsemuldisplaydev_attach_args aa; 365 const struct videomode *vmp; 366 usbd_status error; 367 char *devinfop; 368 369 aprint_naive("\n"); 370 aprint_normal("\n"); 371 372 sc->sc_dev = self; 373 sc->sc_udev = uaa->uaa_device; 374 sc->sc_init_state = UDL_INIT_NONE; 375 376 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 377 aprint_normal_dev(sc->sc_dev, "%s\n", devinfop); 378 usbd_devinfo_free(devinfop); 379 380 /* 381 * Set device configuration descriptor number. 382 */ 383 error = usbd_set_config_no(sc->sc_udev, 1, 0); 384 if (error != USBD_NORMAL_COMPLETION) { 385 aprint_error_dev(self, "failed to set configuration" 386 ", err=%s\n", usbd_errstr(error)); 387 return; 388 } 389 390 /* 391 * Create device handle to interface descriptor. 392 */ 393 error = usbd_device2interface_handle(sc->sc_udev, 0, &sc->sc_iface); 394 if (error != USBD_NORMAL_COMPLETION) 395 return; 396 397 /* 398 * Open bulk TX pipe. 399 */ 400 error = usbd_open_pipe(sc->sc_iface, 1, USBD_EXCLUSIVE_USE, 401 &sc->sc_tx_pipeh); 402 if (error != USBD_NORMAL_COMPLETION) 403 return; 404 405 #ifdef UDL_EVENT_COUNTERS 406 evcnt_attach_dynamic(&sc->sc_ev_cmdq_get, EVCNT_TYPE_MISC, NULL, 407 device_xname(sc->sc_dev), "udl_cmdq_get"); 408 evcnt_attach_dynamic(&sc->sc_ev_cmdq_put, EVCNT_TYPE_MISC, NULL, 409 device_xname(sc->sc_dev), "udl_cmdq_put"); 410 evcnt_attach_dynamic(&sc->sc_ev_cmdq_wait, EVCNT_TYPE_MISC, NULL, 411 device_xname(sc->sc_dev), "udl_cmdq_wait"); 412 evcnt_attach_dynamic(&sc->sc_ev_cmdq_timeout, EVCNT_TYPE_MISC, NULL, 413 device_xname(sc->sc_dev), "udl_cmdq_timeout"); 414 #endif 415 cv_init(&sc->sc_cv, device_xname(sc->sc_dev)); 416 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_TTY); /* XXX for tty_lock */ 417 sc->sc_init_state = UDL_INIT_MIDWAY; 418 419 /* 420 * Allocate bulk command queue. 421 */ 422 if (udl_cmdq_alloc(sc) != 0) 423 return; 424 425 if ((sc->sc_cmd_cur = udl_cmdq_get(sc)) == NULL) 426 return; 427 UDL_CMD_BUFINIT(sc); 428 429 /* 430 * Initialize chip. 431 */ 432 if (udl_init(sc) != 0) 433 return; 434 435 udl_read_edid(sc); 436 437 /* 438 * Initialize resolution. 439 */ 440 #ifndef UDL_VIDEOMODE 441 if (sc->sc_ei.edid_nmodes != 0 && 442 sc->sc_ei.edid_preferred_mode != NULL) 443 vmp = sc->sc_ei.edid_preferred_mode; 444 else 445 #define UDL_VIDEOMODE "640x480x60" 446 #endif 447 vmp = udl_videomode_lookup(UDL_VIDEOMODE); 448 449 if (vmp == NULL) 450 return; 451 452 sc->sc_width = vmp->hdisplay; 453 sc->sc_height = vmp->vdisplay; 454 sc->sc_offscreen = sc->sc_height * 3 / 2; 455 sc->sc_depth = 16; 456 457 if (udl_set_resolution(sc, vmp) != 0) 458 return; 459 460 sc->sc_defaultscreen.name = "default"; 461 sc->sc_screens[0] = &sc->sc_defaultscreen; 462 sc->sc_screenlist.nscreens = 1; 463 sc->sc_screenlist.screens = sc->sc_screens; 464 465 /* 466 * Set initial wsdisplay emulation mode. 467 */ 468 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 469 470 /* 471 * Attach wsdisplay. 472 */ 473 aa.console = 0; 474 aa.scrdata = &sc->sc_screenlist; 475 aa.accessops = &udl_accessops; 476 aa.accesscookie = sc; 477 478 sc->sc_wsdisplay = 479 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, CFARGS_NONE); 480 481 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 482 483 mutex_init(&sc->sc_thread_mtx, MUTEX_DEFAULT, IPL_NONE); 484 cv_init(&sc->sc_thread_cv, "udlcv"); 485 sc->sc_dying = false; 486 sc->sc_thread_stop = true; 487 kthread_create(PRI_BIO, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL, 488 udl_update_thread, sc, &sc->sc_thread, "udlupd"); 489 490 sc->sc_init_state = UDL_INIT_INITED; 491 } 492 493 static int 494 udl_detach(device_t self, int flags) 495 { 496 struct udl_softc *sc = device_private(self); 497 498 /* 499 * Close bulk TX pipe. 500 */ 501 if (sc->sc_tx_pipeh != NULL) { 502 usbd_abort_pipe(sc->sc_tx_pipeh); 503 } 504 505 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 506 /* 507 * Free command xfer buffers. 508 */ 509 udl_cmdq_flush(sc); 510 udl_cmdq_free(sc); 511 } 512 513 if (sc->sc_tx_pipeh != NULL) { 514 usbd_close_pipe(sc->sc_tx_pipeh); 515 } 516 517 /* 518 * Free Huffman table. 519 */ 520 udl_comp_unload(sc); 521 522 if (sc->sc_init_state >= UDL_INIT_INITED) { 523 /* 524 * Free framebuffer memory. 525 */ 526 udl_fbmem_free(sc); 527 528 mutex_enter(&sc->sc_thread_mtx); 529 sc->sc_dying = true; 530 cv_broadcast(&sc->sc_thread_cv); 531 mutex_exit(&sc->sc_thread_mtx); 532 kthread_join(sc->sc_thread); 533 cv_destroy(&sc->sc_thread_cv); 534 mutex_destroy(&sc->sc_thread_mtx); 535 } 536 537 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 538 cv_destroy(&sc->sc_cv); 539 mutex_destroy(&sc->sc_mtx); 540 } 541 542 if (sc->sc_init_state >= UDL_INIT_INITED) { 543 /* 544 * Detach wsdisplay. 545 */ 546 if (sc->sc_wsdisplay != NULL) 547 config_detach(sc->sc_wsdisplay, DETACH_FORCE); 548 549 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 550 sc->sc_dev); 551 } 552 553 if (sc->sc_init_state >= UDL_INIT_MIDWAY) { 554 #ifdef UDL_EVENT_COUNTERS 555 evcnt_detach(&sc->sc_ev_cmdq_get); 556 evcnt_detach(&sc->sc_ev_cmdq_put); 557 evcnt_detach(&sc->sc_ev_cmdq_wait); 558 evcnt_detach(&sc->sc_ev_cmdq_timeout); 559 #endif 560 } 561 562 return 0; 563 } 564 565 static int 566 udl_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 567 { 568 struct udl_softc *sc = v; 569 #ifdef notyet 570 struct udl_ioctl_damage *d; 571 #endif 572 struct wsdisplay_fbinfo *wdf; 573 u_int mode; 574 575 switch (cmd) { 576 case WSDISPLAYIO_GTYPE: 577 *(u_int *)data = WSDISPLAY_TYPE_DL; 578 return 0; 579 580 case WSDISPLAYIO_GINFO: 581 wdf = (struct wsdisplay_fbinfo *)data; 582 wdf->height = sc->sc_height; 583 wdf->width = sc->sc_width; 584 wdf->depth = sc->sc_depth; 585 wdf->cmsize = 0; 586 return 0; 587 588 case WSDISPLAYIO_GVIDEO: 589 *(u_int *)data = sc->sc_blank; 590 return 0; 591 592 case WSDISPLAYIO_SVIDEO: 593 mode = *(u_int *)data; 594 if (mode == sc->sc_blank) 595 return 0; 596 switch (mode) { 597 case WSDISPLAYIO_VIDEO_OFF: 598 udl_startstop(sc, true); 599 udl_blank(sc, 1); 600 break; 601 case WSDISPLAYIO_VIDEO_ON: 602 udl_blank(sc, 0); 603 break; 604 default: 605 return EINVAL; 606 } 607 if (UDL_CMD_BUFSIZE(sc) > 0) 608 udl_cmd_send_async(sc); 609 udl_cmdq_flush(sc); 610 sc->sc_blank = mode; 611 return 0; 612 613 case WSDISPLAYIO_SMODE: 614 mode = *(u_int *)data; 615 if (mode == sc->sc_mode) 616 return 0; 617 switch (mode) { 618 case WSDISPLAYIO_MODE_EMUL: 619 udl_startstop(sc, true); 620 /* clear screen */ 621 udl_fill_rect(sc, 0, 0, 0, sc->sc_width, 622 sc->sc_height); 623 if (UDL_CMD_BUFSIZE(sc) > 0) 624 udl_cmd_send_async(sc); 625 udl_cmdq_flush(sc); 626 udl_comp_unload(sc); 627 break; 628 case WSDISPLAYIO_MODE_DUMBFB: 629 if (UDL_CMD_BUFSIZE(sc) > 0) 630 udl_cmd_send_async(sc); 631 udl_cmdq_flush(sc); 632 udl_comp_load(sc); 633 udl_startstop(sc, false); 634 break; 635 default: 636 return EINVAL; 637 } 638 sc->sc_mode = mode; 639 return 0; 640 641 case WSDISPLAYIO_LINEBYTES: 642 *(u_int *)data = sc->sc_width * (sc->sc_depth / 8); 643 return 0; 644 645 #ifdef notyet 646 /* 647 * XXX 648 * OpenBSD allows device specific ioctl()s and use this 649 * UDLIO_DAMAGE for the damage extension ops of X servers. 650 * Before blindly pulling such interfaces, probably we should 651 * discuss how such devices should be handled which have 652 * in-direct framebuffer memories that should be transferred 653 * per updated rectangle regions via MI wscons APIs. 654 */ 655 case UDLIO_DAMAGE: 656 d = (struct udl_ioctl_damage *)data; 657 d->status = UDLIO_STATUS_OK; 658 if (sc->sc_flags & UDL_COMPRDY) 659 udl_draw_rect_comp(sc, d); 660 else 661 udl_draw_rect(sc, d); 662 return 0; 663 #endif 664 } 665 666 return EPASSTHROUGH; 667 } 668 669 static paddr_t 670 udl_mmap(void *v, void *vs, off_t off, int prot) 671 { 672 struct udl_softc *sc = v; 673 vaddr_t vaddr; 674 paddr_t paddr; 675 bool rv __diagused; 676 677 if (off < 0 || off > roundup2(UDL_FBMEM_SIZE(sc), PAGE_SIZE)) 678 return -1; 679 680 /* allocate framebuffer memory */ 681 if (udl_fbmem_alloc(sc) != 0) 682 return -1; 683 684 udl_startstop(sc, false); 685 686 vaddr = (vaddr_t)sc->sc_fbmem + off; 687 rv = pmap_extract(pmap_kernel(), vaddr, &paddr); 688 KASSERT(rv); 689 paddr += vaddr & PGOFSET; 690 691 /* XXX we need MI paddr_t -> mmap cookie API */ 692 #if defined(__aarch64__) 693 #define PTOMMAP(paddr) aarch64_btop((char *)paddr) 694 #elif defined(__alpha__) 695 #define PTOMMAP(paddr) alpha_btop((char *)paddr) 696 #elif defined(__arm__) 697 #define PTOMMAP(paddr) arm_btop((u_long)paddr) 698 #elif defined(__hppa__) 699 #define PTOMMAP(paddr) btop((u_long)paddr) 700 #elif defined(__i386__) || defined(__x86_64__) 701 #define PTOMMAP(paddr) x86_btop(paddr) 702 #elif defined(__m68k__) 703 #define PTOMMAP(paddr) m68k_btop((char *)paddr) 704 #elif defined(__mips__) 705 #define PTOMMAP(paddr) mips_btop(paddr) 706 #elif defined(__powerpc__) 707 #define PTOMMAP(paddr) (paddr) 708 #elif defined(__riscv__) 709 #define PTOMMAP(paddr) riscv_btop(paddr) 710 #elif defined(__sh__) 711 #define PTOMMAP(paddr) sh3_btop(paddr) 712 #elif defined(__sparc__) 713 #define PTOMMAP(paddr) (paddr) 714 #elif defined(__sparc64__) 715 #define PTOMMAP(paddr) atop(paddr) 716 #elif defined(__vax__) 717 #define PTOMMAP(paddr) btop((u_int)paddr) 718 #endif 719 720 return PTOMMAP(paddr); 721 } 722 723 static int 724 udl_alloc_screen(void *v, const struct wsscreen_descr *type, 725 void **cookiep, int *curxp, int *curyp, long *attrp) 726 { 727 struct udl_softc *sc = v; 728 729 if (sc->sc_nscreens > 0) 730 return ENOMEM; 731 732 /* 733 * Initialize rasops. 734 */ 735 sc->sc_ri.ri_depth = sc->sc_depth; 736 sc->sc_ri.ri_bits = NULL; 737 sc->sc_ri.ri_width = sc->sc_width; 738 sc->sc_ri.ri_height = sc->sc_height; 739 sc->sc_ri.ri_stride = sc->sc_width * (sc->sc_depth / 8); 740 sc->sc_ri.ri_hw = sc; 741 sc->sc_ri.ri_flg = 0; 742 743 if (sc->sc_depth == 16) { 744 sc->sc_ri.ri_rnum = 5; 745 sc->sc_ri.ri_gnum = 6; 746 sc->sc_ri.ri_bnum = 5; 747 sc->sc_ri.ri_rpos = 11; 748 sc->sc_ri.ri_gpos = 5; 749 sc->sc_ri.ri_bpos = 0; 750 } 751 752 rasops_init(&sc->sc_ri, sc->sc_height / 8, sc->sc_width / 8); 753 754 sc->sc_ri.ri_ops.cursor = udl_cursor; 755 sc->sc_ri.ri_ops.putchar = udl_putchar; 756 sc->sc_ri.ri_ops.copycols = udl_copycols; 757 sc->sc_ri.ri_ops.erasecols = udl_erasecols; 758 sc->sc_ri.ri_ops.copyrows = udl_copyrows; 759 sc->sc_ri.ri_ops.eraserows = udl_eraserows; 760 761 sc->sc_ri.ri_ops.allocattr(&sc->sc_ri, 0, 0, 0, attrp); 762 763 sc->sc_defaultscreen.ncols = sc->sc_ri.ri_cols; 764 sc->sc_defaultscreen.nrows = sc->sc_ri.ri_rows; 765 sc->sc_defaultscreen.textops = &sc->sc_ri.ri_ops; 766 sc->sc_defaultscreen.fontwidth = sc->sc_ri.ri_font->fontwidth; 767 sc->sc_defaultscreen.fontheight = sc->sc_ri.ri_font->fontheight; 768 sc->sc_defaultscreen.capabilities = sc->sc_ri.ri_caps; 769 770 *cookiep = &sc->sc_ri; 771 *curxp = 0; 772 *curyp = 0; 773 774 sc->sc_nscreens++; 775 776 return 0; 777 } 778 779 static void 780 udl_free_screen(void *v, void *cookie) 781 { 782 struct udl_softc *sc = v; 783 784 sc->sc_nscreens--; 785 } 786 787 static int 788 udl_show_screen(void *v, void *cookie, int waitok, 789 void (*cb)(void *, int, int), void *cbarg) 790 { 791 792 return 0; 793 } 794 795 static inline void 796 udl_cmd_add_decomptable(struct udl_softc *sc, uint8_t *buf, int len) 797 { 798 799 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_DECOMP); 800 udl_cmd_add_4(sc, 0x263871cd); /* magic number */ 801 udl_cmd_add_4(sc, 0x00000200); /* 512 byte chunks */ 802 memcpy(sc->sc_cmd_buf, buf, len); 803 sc->sc_cmd_buf += len; 804 } 805 806 static void 807 udl_comp_load(struct udl_softc *sc) 808 { 809 struct udl_huffman *h; 810 uint8_t *decomp; 811 size_t decomp_size; 812 int error, i; 813 814 if (!(sc->sc_flags & UDL_DECOMPRDY)) { 815 error = firmware_load("udl", "udl-decomp", &decomp, 816 &decomp_size); 817 if (error != 0) { 818 aprint_error_dev(sc->sc_dev, 819 "error %d, could not read decomp table %s!\n", 820 error, "udl-decomp"); 821 return; 822 } 823 udl_cmd_add_decomptable(sc, decomp, decomp_size); 824 firmware_free(decomp, decomp_size); 825 if (udl_cmd_send(sc) != 0) 826 return; 827 sc->sc_flags |= UDL_DECOMPRDY; 828 } 829 830 if (!(sc->sc_flags & UDL_COMPRDY)) { 831 error = firmware_load("udl", "udl-comp", &sc->sc_huffman, 832 &sc->sc_huffman_size); 833 if (error != 0) { 834 aprint_error_dev(sc->sc_dev, 835 "error %d, could not read huffman table %s!\n", 836 error, "udl-comp"); 837 return; 838 } 839 h = (struct udl_huffman *)sc->sc_huffman; 840 for (i = 0; i < UDL_HUFFMAN_RECORDS; i++) 841 h[i].bit_pattern = be32toh(h[i].bit_pattern); 842 sc->sc_huffman_base = sc->sc_huffman + UDL_HUFFMAN_BASE; 843 sc->sc_flags |= UDL_COMPRDY; 844 } 845 } 846 847 static void 848 udl_comp_unload(struct udl_softc *sc) 849 { 850 851 if (sc->sc_flags & UDL_COMPRDY) { 852 firmware_free(sc->sc_huffman, sc->sc_huffman_size); 853 sc->sc_huffman = NULL; 854 sc->sc_huffman_size = 0; 855 sc->sc_flags &= ~UDL_COMPRDY; 856 } 857 } 858 859 static int 860 udl_fbmem_alloc(struct udl_softc *sc) 861 { 862 863 mutex_enter(&sc->sc_thread_mtx); 864 if (sc->sc_fbmem == NULL) 865 sc->sc_fbmem = kmem_zalloc(UDL_FBMEM_SIZE(sc), KM_SLEEP); 866 if (sc->sc_fbmem_prev == NULL) 867 sc->sc_fbmem_prev = kmem_zalloc(UDL_FBMEM_SIZE(sc), KM_SLEEP); 868 mutex_exit(&sc->sc_thread_mtx); 869 870 return 0; 871 } 872 873 static void 874 udl_fbmem_free(struct udl_softc *sc) 875 { 876 877 mutex_enter(&sc->sc_thread_mtx); 878 if (sc->sc_fbmem != NULL) { 879 kmem_free(sc->sc_fbmem, UDL_FBMEM_SIZE(sc)); 880 sc->sc_fbmem = NULL; 881 } 882 if (sc->sc_fbmem_prev != NULL) { 883 kmem_free(sc->sc_fbmem_prev, UDL_FBMEM_SIZE(sc)); 884 sc->sc_fbmem_prev = NULL; 885 } 886 mutex_exit(&sc->sc_thread_mtx); 887 } 888 889 static int 890 udl_cmdq_alloc(struct udl_softc *sc) 891 { 892 struct udl_cmdq *cmdq; 893 int i; 894 895 TAILQ_INIT(&sc->sc_freecmd); 896 TAILQ_INIT(&sc->sc_xfercmd); 897 898 for (i = 0; i < UDL_NCMDQ; i++) { 899 cmdq = &sc->sc_cmdq[i]; 900 901 cmdq->cq_sc = sc; 902 903 int err = usbd_create_xfer(sc->sc_tx_pipeh, 904 UDL_CMD_BUFFER_SIZE, 0, 0, &cmdq->cq_xfer); 905 if (err) { 906 aprint_error_dev(sc->sc_dev, 907 "%s: can't allocate xfer handle!\n", __func__); 908 goto error; 909 } 910 911 cmdq->cq_buf = usbd_get_buffer(cmdq->cq_xfer); 912 913 TAILQ_INSERT_TAIL(&sc->sc_freecmd, cmdq, cq_chain); 914 } 915 916 return 0; 917 918 error: 919 udl_cmdq_free(sc); 920 return -1; 921 } 922 923 static void 924 udl_cmdq_free(struct udl_softc *sc) 925 { 926 struct udl_cmdq *cmdq; 927 int i; 928 929 for (i = 0; i < UDL_NCMDQ; i++) { 930 cmdq = &sc->sc_cmdq[i]; 931 932 if (cmdq->cq_xfer != NULL) { 933 usbd_destroy_xfer(cmdq->cq_xfer); 934 cmdq->cq_xfer = NULL; 935 cmdq->cq_buf = NULL; 936 } 937 } 938 } 939 940 static struct udl_cmdq * 941 udl_cmdq_get(struct udl_softc *sc) 942 { 943 struct udl_cmdq *cmdq; 944 945 cmdq = TAILQ_FIRST(&sc->sc_freecmd); 946 if (cmdq != NULL) { 947 TAILQ_REMOVE(&sc->sc_freecmd, cmdq, cq_chain); 948 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_get); 949 } 950 951 return cmdq; 952 } 953 954 static void 955 udl_cmdq_put(struct udl_softc *sc, struct udl_cmdq *cmdq) 956 { 957 958 TAILQ_INSERT_TAIL(&sc->sc_freecmd, cmdq, cq_chain); 959 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_put); 960 } 961 962 static void 963 udl_cmdq_flush(struct udl_softc *sc) 964 { 965 966 mutex_enter(&sc->sc_mtx); 967 while (TAILQ_FIRST(&sc->sc_xfercmd) != NULL) 968 cv_wait(&sc->sc_cv, &sc->sc_mtx); 969 mutex_exit(&sc->sc_mtx); 970 } 971 972 static void 973 udl_cursor(void *cookie, int on, int row, int col) 974 { 975 struct rasops_info *ri = cookie; 976 struct udl_softc *sc = ri->ri_hw; 977 int x, y, width, height; 978 979 if (ri->ri_flg & RI_CURSOR) 980 udl_restore_char(ri); 981 982 ri->ri_crow = row; 983 ri->ri_ccol = col; 984 985 if (on != 0) { 986 ri->ri_flg |= RI_CURSOR; 987 988 x = col * ri->ri_font->fontwidth; 989 y = row * ri->ri_font->fontheight; 990 width = ri->ri_font->fontwidth; 991 height = ri->ri_font->fontheight; 992 993 /* save the last character block to off-screen */ 994 udl_copy_rect(sc, x, y, 0, sc->sc_offscreen, width, height); 995 996 /* draw cursor */ 997 udl_fill_rect(sc, 0xffff, x, y, width, 1); 998 udl_fill_rect(sc, 0xffff, x, y + 1, 1, height - 2); 999 udl_fill_rect(sc, 0xffff, x + width - 1, y + 1, 1, height - 2); 1000 udl_fill_rect(sc, 0xffff, x, y + height - 1, width, 1); 1001 1002 udl_cmd_send_async(sc); 1003 } else 1004 ri->ri_flg &= ~RI_CURSOR; 1005 } 1006 1007 static void 1008 udl_putchar(void *cookie, int row, int col, u_int uc, long attr) 1009 { 1010 struct rasops_info *ri = cookie; 1011 struct udl_softc *sc = ri->ri_hw; 1012 uint16_t rgb16[2]; 1013 int fg, bg, underline, x, y, width, height; 1014 1015 rasops_unpack_attr(attr, &fg, &bg, &underline); 1016 rgb16[1] = (uint16_t)ri->ri_devcmap[fg]; 1017 rgb16[0] = (uint16_t)ri->ri_devcmap[bg]; 1018 1019 x = col * ri->ri_font->fontwidth; 1020 y = row * ri->ri_font->fontheight; 1021 width = ri->ri_font->fontwidth; 1022 height = ri->ri_font->fontheight; 1023 1024 if (uc == ' ') { 1025 /* 1026 * Writing a block for the space character instead rendering 1027 * it from font bits is more slim. 1028 */ 1029 udl_fill_rect(sc, rgb16[0], x, y, width, height); 1030 } else { 1031 /* render a character from font bits */ 1032 udl_draw_char(ri, rgb16, uc, x, y); 1033 } 1034 1035 if (underline != 0) 1036 udl_fill_rect(sc, rgb16[1], x, y + height - 1, width, 1); 1037 1038 #if 0 1039 udl_cmd_send_async(sc); 1040 #endif 1041 } 1042 1043 static void 1044 udl_copycols(void *cookie, int row, int src, int dst, int num) 1045 { 1046 struct rasops_info *ri = cookie; 1047 struct udl_softc *sc = ri->ri_hw; 1048 int sx, dx, y, width, height; 1049 1050 sx = src * ri->ri_font->fontwidth; 1051 dx = dst * ri->ri_font->fontwidth; 1052 y = row * ri->ri_font->fontheight; 1053 width = num * ri->ri_font->fontwidth; 1054 height = ri->ri_font->fontheight; 1055 1056 /* copy row block to off-screen first to fix overlay-copy problem */ 1057 udl_copy_rect(sc, sx, y, 0, sc->sc_offscreen, width, height); 1058 1059 /* copy row block back from off-screen now */ 1060 udl_copy_rect(sc, 0, sc->sc_offscreen, dx, y, width, height); 1061 #if 0 1062 udl_cmd_send_async(sc); 1063 #endif 1064 } 1065 1066 static void 1067 udl_erasecols(void *cookie, int row, int col, int num, long attr) 1068 { 1069 struct rasops_info *ri = cookie; 1070 struct udl_softc *sc = ri->ri_hw; 1071 uint16_t rgb16; 1072 int fg, bg, x, y, width, height; 1073 1074 rasops_unpack_attr(attr, &fg, &bg, NULL); 1075 rgb16 = (uint16_t)ri->ri_devcmap[bg]; 1076 1077 x = col * ri->ri_font->fontwidth; 1078 y = row * ri->ri_font->fontheight; 1079 width = num * ri->ri_font->fontwidth; 1080 height = ri->ri_font->fontheight; 1081 1082 udl_fill_rect(sc, rgb16, x, y, width, height); 1083 #if 0 1084 udl_cmd_send_async(sc); 1085 #endif 1086 } 1087 1088 static void 1089 udl_copyrows(void *cookie, int src, int dst, int num) 1090 { 1091 struct rasops_info *ri = cookie; 1092 struct udl_softc *sc = ri->ri_hw; 1093 int sy, ey, dy, width, height; 1094 1095 width = ri->ri_emuwidth; 1096 height = ri->ri_font->fontheight; 1097 1098 if (dst < src) { 1099 sy = src * height; 1100 ey = (src + num) * height; 1101 dy = dst * height; 1102 1103 while (sy < ey) { 1104 udl_copy_rect(sc, 0, sy, 0, dy, width, height); 1105 sy += height; 1106 dy += height; 1107 } 1108 } else { 1109 sy = (src + num) * height; 1110 ey = src * height; 1111 dy = (dst + num) * height; 1112 1113 while (sy > ey) { 1114 sy -= height; 1115 dy -= height; 1116 udl_copy_rect(sc, 0, sy, 0, dy, width, height); 1117 } 1118 } 1119 #if 0 1120 udl_cmd_send_async(sc); 1121 #endif 1122 } 1123 1124 static void 1125 udl_eraserows(void *cookie, int row, int num, long attr) 1126 { 1127 struct rasops_info *ri = cookie; 1128 struct udl_softc *sc = ri->ri_hw; 1129 uint16_t rgb16; 1130 int fg, bg, y, width, height; 1131 1132 rasops_unpack_attr(attr, &fg, &bg, NULL); 1133 rgb16 = (uint16_t)ri->ri_devcmap[bg]; 1134 1135 y = row * ri->ri_font->fontheight; 1136 width = ri->ri_emuwidth; 1137 height = num * ri->ri_font->fontheight; 1138 1139 udl_fill_rect(sc, rgb16, 0, y, width, height); 1140 #if 0 1141 udl_cmd_send_async(sc); 1142 #endif 1143 } 1144 1145 static void 1146 udl_restore_char(struct rasops_info *ri) 1147 { 1148 struct udl_softc *sc = ri->ri_hw; 1149 int x, y, width, height; 1150 1151 x = ri->ri_ccol * ri->ri_font->fontwidth; 1152 y = ri->ri_crow * ri->ri_font->fontheight; 1153 width = ri->ri_font->fontwidth; 1154 height = ri->ri_font->fontheight; 1155 1156 /* restore the last saved character from off-screen */ 1157 udl_copy_rect(sc, 0, sc->sc_offscreen, x, y, width, height); 1158 } 1159 1160 static void 1161 udl_draw_char(struct rasops_info *ri, uint16_t *rgb16, u_int uc, int x, int y) 1162 { 1163 struct udl_softc *sc = ri->ri_hw; 1164 struct wsdisplay_font *font = ri->ri_font; 1165 uint32_t fontbits; 1166 uint16_t pixels[32]; 1167 uint8_t *fontbase; 1168 int i, soff, eoff; 1169 1170 soff = y * sc->sc_width + x; 1171 eoff = (y + font->fontheight) * sc->sc_width + x; 1172 fontbase = (uint8_t *)font->data + (uc - font->firstchar) * 1173 ri->ri_fontscale; 1174 1175 while (soff < eoff) { 1176 fontbits = 0; 1177 switch (font->stride) { 1178 case 4: 1179 fontbits |= fontbase[3]; 1180 /* FALLTHROUGH */ 1181 case 3: 1182 fontbits |= fontbase[2] << 8; 1183 /* FALLTHROUGH */ 1184 case 2: 1185 fontbits |= fontbase[1] << 16; 1186 /* FALLTHROUGH */ 1187 case 1: 1188 fontbits |= fontbase[0] << 24; 1189 } 1190 fontbase += font->stride; 1191 1192 for (i = 0; i < font->fontwidth; i++) { 1193 pixels[i] = rgb16[(fontbits >> 31) & 1]; 1194 fontbits <<= 1; 1195 } 1196 1197 udl_draw_line(sc, pixels, soff, font->fontwidth); 1198 soff += sc->sc_width; 1199 } 1200 } 1201 1202 static void 1203 udl_copy_rect(struct udl_softc *sc, int sx, int sy, int dx, int dy, int width, 1204 int height) 1205 { 1206 int sbase, soff, ebase, eoff, dbase, doff, width_cur; 1207 1208 sbase = sy * sc->sc_width; 1209 ebase = (sy + height) * sc->sc_width; 1210 dbase = dy * sc->sc_width; 1211 1212 while (width > 0) { 1213 soff = sbase + sx; 1214 eoff = ebase + sx; 1215 doff = dbase + dx; 1216 1217 if (width >= UDL_CMD_WIDTH_MAX) 1218 width_cur = UDL_CMD_WIDTH_MAX; 1219 else 1220 width_cur = width; 1221 1222 while (soff < eoff) { 1223 udl_copy_line(sc, soff, doff, width_cur); 1224 soff += sc->sc_width; 1225 doff += sc->sc_width; 1226 } 1227 1228 sx += width_cur; 1229 dx += width_cur; 1230 width -= width_cur; 1231 } 1232 } 1233 1234 static void 1235 udl_fill_rect(struct udl_softc *sc, uint16_t rgb16, int x, int y, int width, 1236 int height) 1237 { 1238 int sbase, soff, ebase, eoff, width_cur; 1239 1240 sbase = y * sc->sc_width; 1241 ebase = (y + height) * sc->sc_width; 1242 1243 while (width > 0) { 1244 soff = sbase + x; 1245 eoff = ebase + x; 1246 1247 if (width >= UDL_CMD_WIDTH_MAX) 1248 width_cur = UDL_CMD_WIDTH_MAX; 1249 else 1250 width_cur = width; 1251 1252 while (soff < eoff) { 1253 udl_fill_line(sc, rgb16, soff, width_cur); 1254 soff += sc->sc_width; 1255 } 1256 1257 x += width_cur; 1258 width -= width_cur; 1259 } 1260 } 1261 1262 #ifdef notyet 1263 static void 1264 udl_draw_rect(struct udl_softc *sc, struct udl_ioctl_damage *d) 1265 { 1266 int sbase, soff, ebase, eoff, x, y, width, width_cur, height; 1267 1268 x = d->x1; 1269 y = d->y1; 1270 width = d->x2 - d->x1; 1271 height = d->y2 - d->y1; 1272 sbase = y * sc->sc_width; 1273 ebase = (y + height) * sc->sc_width; 1274 1275 while (width > 0) { 1276 soff = sbase + x; 1277 eoff = ebase + x; 1278 1279 if (width >= UDL_CMD_WIDTH_MAX) 1280 width_cur = UDL_CMD_WIDTH_MAX; 1281 else 1282 width_cur = width; 1283 1284 while (soff < eoff) { 1285 udl_draw_line(sc, (uint16_t *)sc->sc_fbmem + soff, 1286 soff, width_cur); 1287 soff += sc->sc_width; 1288 } 1289 1290 x += width_cur; 1291 width -= width_cur; 1292 } 1293 1294 udl_cmd_send_async(sc); 1295 } 1296 1297 static void 1298 udl_draw_rect_comp(struct udl_softc *sc, struct udl_ioctl_damage *d) 1299 { 1300 int soff, eoff, x, y, width, height; 1301 1302 x = d->x1; 1303 y = d->y1; 1304 width = d->x2 - d->x1; 1305 height = d->y2 - d->y1; 1306 soff = y * sc->sc_width + x; 1307 eoff = (y + height) * sc->sc_width + x; 1308 1309 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1310 sc->sc_cmd_cblen = 4; 1311 1312 while (soff < eoff) { 1313 udl_draw_line_comp(sc, (uint16_t *)sc->sc_fbmem + soff, soff, 1314 width); 1315 soff += sc->sc_width; 1316 } 1317 1318 udl_cmd_send_async(sc); 1319 } 1320 #endif 1321 1322 static inline void 1323 udl_copy_line(struct udl_softc *sc, int soff, int doff, int width) 1324 { 1325 1326 if (__predict_false((UDL_CMD_BUFSIZE(sc) + UDL_CMD_COPY_SIZE + 2) > 1327 UDL_CMD_BUFFER_SIZE)) 1328 udl_cmd_send_async(sc); 1329 1330 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_COPY16); 1331 udl_cmd_add_4(sc, ((doff * 2) << 8) | (width & 0xff)); 1332 1333 udl_cmd_add_3(sc, soff * 2); 1334 } 1335 1336 static inline void 1337 udl_fill_line(struct udl_softc *sc, uint16_t rgb16, int off, int width) 1338 { 1339 1340 if (__predict_false((UDL_CMD_BUFSIZE(sc) + UDL_CMD_FILL_SIZE + 2) > 1341 UDL_CMD_BUFFER_SIZE)) 1342 udl_cmd_send_async(sc); 1343 1344 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_RLE16); 1345 udl_cmd_add_4(sc, ((off * 2) << 8) | (width & 0xff)); 1346 1347 udl_cmd_add_1(sc, width); 1348 udl_cmd_add_2(sc, rgb16); 1349 } 1350 1351 static inline void 1352 udl_draw_line(struct udl_softc *sc, uint16_t *buf, int off, int width) 1353 { 1354 1355 if (__predict_false( 1356 (UDL_CMD_BUFSIZE(sc) + UDL_CMD_DRAW_SIZE(width) + 2) > 1357 UDL_CMD_BUFFER_SIZE)) 1358 udl_cmd_send_async(sc); 1359 1360 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_FB_WRITE16); 1361 udl_cmd_add_4(sc, ((off * 2) << 8) | (width & 0xff)); 1362 1363 udl_cmd_add_buf(sc, buf, width); 1364 } 1365 1366 #ifdef notyet 1367 static inline int 1368 udl_cmd_add_buf_comp(struct udl_softc *sc, uint16_t *buf, int width) 1369 { 1370 struct udl_huffman *h; 1371 uint16_t *startp, *endp; 1372 uint32_t bit_pattern; 1373 uint16_t prev; 1374 int16_t diff; 1375 uint8_t bit_count, bit_pos, bit_rem, curlen; 1376 1377 startp = buf; 1378 if (width >= UDL_CMD_WIDTH_MAX) 1379 endp = buf + UDL_CMD_WIDTH_MAX; 1380 else 1381 endp = buf + width; 1382 1383 prev = bit_pos = *sc->sc_cmd_buf = 0; 1384 bit_rem = 8; 1385 1386 /* 1387 * Generate a sub-block with maximal 256 pixels compressed data. 1388 */ 1389 while (buf < endp) { 1390 /* get difference between current and previous pixel */ 1391 diff = *buf - prev; 1392 1393 /* get the huffman difference bit sequence */ 1394 h = (struct udl_huffman *)sc->sc_huffman_base + diff; 1395 bit_count = h->bit_count; 1396 bit_pattern = h->bit_pattern; 1397 1398 curlen = (bit_pos + bit_count + 7) / 8; 1399 if (__predict_false((sc->sc_cmd_cblen + curlen + 1) > 1400 UDL_CMD_COMP_BLOCK_SIZE)) 1401 break; 1402 1403 /* generate one pixel compressed data */ 1404 while (bit_count >= bit_rem) { 1405 *sc->sc_cmd_buf++ |= 1406 (bit_pattern & ((1 << bit_rem) - 1)) << bit_pos; 1407 *sc->sc_cmd_buf = 0; 1408 sc->sc_cmd_cblen++; 1409 bit_count -= bit_rem; 1410 bit_pattern >>= bit_rem; 1411 bit_pos = 0; 1412 bit_rem = 8; 1413 } 1414 1415 if (bit_count > 0) { 1416 *sc->sc_cmd_buf |= 1417 (bit_pattern & ((1 << bit_count) - 1)) << bit_pos; 1418 bit_pos += bit_count; 1419 bit_rem -= bit_count; 1420 } 1421 1422 prev = *buf++; 1423 } 1424 1425 /* 1426 * If we have bits left in our last byte, round up to the next 1427 * byte, so we don't overwrite them. 1428 */ 1429 if (bit_pos > 0) { 1430 sc->sc_cmd_buf++; 1431 sc->sc_cmd_cblen++; 1432 } 1433 1434 /* return how many pixels we have compressed */ 1435 return buf - startp; 1436 } 1437 1438 static inline void 1439 udl_draw_line_comp(struct udl_softc *sc, uint16_t *buf, int off, int width) 1440 { 1441 uint8_t *widthp; 1442 int width_cur; 1443 1444 while (width > 0) { 1445 if (__predict_false( 1446 (sc->sc_cmd_cblen + UDL_CMD_COMP_MIN_SIZE + 1) > 1447 UDL_CMD_COMP_BLOCK_SIZE)) { 1448 if (UDL_CMD_BUFSIZE(sc) < UDL_CMD_COMP_THRESHOLD) { 1449 while (sc->sc_cmd_cblen < 1450 UDL_CMD_COMP_BLOCK_SIZE) { 1451 *sc->sc_cmd_buf++ = 0; 1452 sc->sc_cmd_cblen++; 1453 } 1454 } else 1455 udl_cmd_send_async(sc); 1456 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1457 sc->sc_cmd_cblen = 4; 1458 } 1459 1460 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | 1461 (UDL_BULK_CMD_FB_WRITE16 | UDL_BULK_CMD_FB_COMP)); 1462 udl_cmd_add_4(sc, (off * 2) << 8); 1463 1464 widthp = sc->sc_cmd_buf - 1; 1465 1466 sc->sc_cmd_cblen += UDL_CMD_HEADER_SIZE; 1467 1468 width_cur = udl_cmd_add_buf_comp(sc, buf, width); 1469 1470 *widthp = width_cur; 1471 buf += width_cur; 1472 off += width_cur; 1473 width -= width_cur; 1474 } 1475 } 1476 #endif 1477 1478 static int 1479 udl_cmd_send(struct udl_softc *sc) 1480 { 1481 struct udl_cmdq *cmdq; 1482 usbd_status error; 1483 uint32_t len; 1484 1485 cmdq = sc->sc_cmd_cur; 1486 1487 /* mark end of command stack */ 1488 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_EOC); 1489 1490 len = UDL_CMD_BUFSIZE(sc); 1491 1492 /* do xfer */ 1493 error = usbd_bulk_transfer(cmdq->cq_xfer, sc->sc_tx_pipeh, 0, 1494 USBD_NO_TIMEOUT, cmdq->cq_buf, &len); 1495 1496 UDL_CMD_BUFINIT(sc); 1497 1498 if (error != USBD_NORMAL_COMPLETION) { 1499 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1500 usbd_errstr(error)); 1501 return -1; 1502 } 1503 1504 return 0; 1505 } 1506 1507 static void 1508 udl_cmd_send_async(struct udl_softc *sc) 1509 { 1510 struct udl_cmdq *cmdq; 1511 usbd_status error; 1512 uint32_t len; 1513 1514 #if 1 1515 /* 1516 * XXX 1517 * All tty ops for wsemul are called with tty_lock spin mutex held, 1518 * so we can't call cv_wait(9) here to acquire a free buffer. 1519 * For now, all commands and data for wsemul ops are discarded 1520 * if there is no free command buffer, and then screen text might 1521 * be corrupted on large scroll ops etc. 1522 * 1523 * Probably we have to reorganize the giant tty_lock mutex, or 1524 * change wsdisplay APIs (especially wsdisplaystart()) to return 1525 * a number of actually handled characters as OpenBSD does, but 1526 * the latter one requires whole API changes around rasops(9) etc. 1527 */ 1528 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 1529 if (TAILQ_FIRST(&sc->sc_freecmd) == NULL) { 1530 UDL_CMD_BUFINIT(sc); 1531 return; 1532 } 1533 } 1534 #endif 1535 1536 cmdq = sc->sc_cmd_cur; 1537 1538 /* mark end of command stack */ 1539 udl_cmd_add_2(sc, (UDL_BULK_SOC << 8) | UDL_BULK_CMD_EOC); 1540 1541 len = UDL_CMD_BUFSIZE(sc); 1542 1543 /* do xfer */ 1544 mutex_enter(&sc->sc_mtx); 1545 usbd_setup_xfer(cmdq->cq_xfer, cmdq, cmdq->cq_buf, 1546 len, 0, USBD_NO_TIMEOUT, udl_cmd_send_async_cb); 1547 mutex_exit(&sc->sc_mtx); 1548 error = usbd_transfer(cmdq->cq_xfer); 1549 mutex_enter(&sc->sc_mtx); 1550 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1551 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1552 usbd_errstr(error)); 1553 mutex_exit(&sc->sc_mtx); 1554 goto end; 1555 } 1556 1557 TAILQ_INSERT_TAIL(&sc->sc_xfercmd, cmdq, cq_chain); 1558 cmdq = udl_cmdq_get(sc); 1559 mutex_exit(&sc->sc_mtx); 1560 while (cmdq == NULL) { 1561 int err; 1562 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_wait); 1563 mutex_enter(&sc->sc_mtx); 1564 err = cv_timedwait(&sc->sc_cv, &sc->sc_mtx, 1565 mstohz(100) /* XXX is this needed? */); 1566 if (err != 0) { 1567 DPRINTF(("%s: %s: cv timeout (error = %d)\n", 1568 device_xname(sc->sc_dev), __func__, err)); 1569 UDL_EVCNT_INCR(&sc->sc_ev_cmdq_timeout); 1570 } 1571 cmdq = udl_cmdq_get(sc); 1572 mutex_exit(&sc->sc_mtx); 1573 } 1574 sc->sc_cmd_cur = cmdq; 1575 end: 1576 UDL_CMD_BUFINIT(sc); 1577 } 1578 1579 static void 1580 udl_cmd_send_async_cb(struct usbd_xfer *xfer, void * priv, 1581 usbd_status status) 1582 { 1583 struct udl_cmdq *cmdq = priv; 1584 struct udl_softc *sc = cmdq->cq_sc; 1585 1586 if (status != USBD_NORMAL_COMPLETION) { 1587 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1588 usbd_errstr(status)); 1589 1590 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1591 return; 1592 if (status == USBD_STALLED) 1593 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 1594 } 1595 1596 mutex_enter(&sc->sc_mtx); 1597 TAILQ_REMOVE(&sc->sc_xfercmd, cmdq, cq_chain); 1598 udl_cmdq_put(sc, cmdq); 1599 1600 /* signal xfer op that sleeps for a free xfer buffer */ 1601 cv_signal(&sc->sc_cv); 1602 mutex_exit(&sc->sc_mtx); 1603 } 1604 1605 static int 1606 udl_ctrl_msg(struct udl_softc *sc, uint8_t rt, uint8_t r, uint16_t index, 1607 uint16_t value, uint8_t *buf, uint16_t len) 1608 { 1609 usb_device_request_t req; 1610 usbd_status error; 1611 1612 req.bmRequestType = rt; 1613 req.bRequest = r; 1614 USETW(req.wIndex, index); 1615 USETW(req.wValue, value); 1616 USETW(req.wLength, len); 1617 1618 error = usbd_do_request(sc->sc_udev, &req, buf); 1619 if (error != USBD_NORMAL_COMPLETION) { 1620 aprint_error_dev(sc->sc_dev, "%s: %s!\n", __func__, 1621 usbd_errstr(error)); 1622 return -1; 1623 } 1624 1625 return 0; 1626 } 1627 1628 static int 1629 udl_init(struct udl_softc *sc) 1630 { 1631 static uint8_t key[16] = { 1632 0x57, 0xcd, 0xdc, 0xa7, 0x1c, 0x88, 0x5e, 0x15, 1633 0x60, 0xfe, 0xc6, 0x97, 0x16, 0x3d, 0x47, 0xf2 1634 }; 1635 uint8_t status[4], val; 1636 1637 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_STATUS, 1638 0x0000, 0x0000, status, sizeof(status)) != 0) 1639 return -1; 1640 1641 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_1, 1642 0xc484, 0x0000, &val, 1) != 0) 1643 return -1; 1644 1645 val = 1; 1646 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_WRITE_1, 1647 0xc41f, 0x0000, &val, 1) != 0) 1648 return -1; 1649 1650 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_SET_KEY, 1651 0x0000, 0x0000, key, sizeof(key)) != 0) 1652 return -1; 1653 1654 val = 0; 1655 if (udl_ctrl_msg(sc, UT_WRITE_VENDOR_DEVICE, UDL_CTRL_CMD_WRITE_1, 1656 0xc40b, 0x0000, &val, 1) != 0) 1657 return -1; 1658 1659 return 0; 1660 } 1661 1662 static void 1663 udl_read_edid(struct udl_softc *sc) 1664 { 1665 uint8_t buf[64], edid[128]; 1666 int offset; 1667 1668 memset(&sc->sc_ei, 0, sizeof(struct edid_info)); 1669 1670 offset = 0; 1671 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1672 0x00a1, (offset << 8), buf, 64) != 0) 1673 return; 1674 if (buf[0] != 0) 1675 return; 1676 memcpy(&edid[offset], &buf[1], 63); 1677 offset += 63; 1678 1679 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1680 0x00a1, (offset << 8), buf, 64) != 0) 1681 return; 1682 if (buf[0] != 0) 1683 return; 1684 memcpy(&edid[offset], &buf[1], 63); 1685 offset += 63; 1686 1687 if (udl_ctrl_msg(sc, UT_READ_VENDOR_DEVICE, UDL_CTRL_CMD_READ_EDID, 1688 0x00a1, (offset << 8), buf, 3) != 0) 1689 return; 1690 if (buf[0] != 0) 1691 return; 1692 memcpy(&edid[offset], &buf[1], 2); 1693 1694 if (edid_parse(edid, &sc->sc_ei) == 0) { 1695 #ifdef UDL_DEBUG 1696 edid_print(&sc->sc_ei); 1697 #endif 1698 } 1699 } 1700 1701 static void 1702 udl_set_address(struct udl_softc *sc, int start16, int stride16, int start8, 1703 int stride8) 1704 { 1705 udl_reg_write_1(sc, UDL_REG_SYNC, 0x00); 1706 udl_reg_write_3(sc, UDL_REG_ADDR_START16, start16); 1707 udl_reg_write_3(sc, UDL_REG_ADDR_STRIDE16, stride16); 1708 udl_reg_write_3(sc, UDL_REG_ADDR_START8, start8); 1709 udl_reg_write_3(sc, UDL_REG_ADDR_STRIDE8, stride8); 1710 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1711 } 1712 1713 static void 1714 udl_blank(struct udl_softc *sc, int blank) 1715 { 1716 1717 if (blank != 0) 1718 udl_reg_write_1(sc, UDL_REG_BLANK, UDL_REG_BLANK_ON); 1719 else 1720 udl_reg_write_1(sc, UDL_REG_BLANK, UDL_REG_BLANK_OFF); 1721 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1722 } 1723 1724 static uint16_t 1725 udl_lfsr(uint16_t count) 1726 { 1727 uint16_t val = 0xffff; 1728 1729 while (count > 0) { 1730 val = (uint16_t)(val << 1) | ((uint16_t)( 1731 (uint16_t)(val << 0) ^ 1732 (uint16_t)(val << 11) ^ 1733 (uint16_t)(val << 13) ^ 1734 (uint16_t)(val << 14) 1735 ) >> 15); 1736 count--; 1737 } 1738 1739 return val; 1740 } 1741 1742 static int 1743 udl_set_resolution(struct udl_softc *sc, const struct videomode *vmp) 1744 { 1745 uint16_t val; 1746 int start16, stride16, start8, stride8; 1747 1748 /* set video memory offsets */ 1749 start16 = 0; 1750 stride16 = sc->sc_width * 2; 1751 start8 = stride16 * sc->sc_height; 1752 stride8 = sc->sc_width; 1753 udl_set_address(sc, start16, stride16, start8, stride8); 1754 1755 /* write resolution values */ 1756 udl_reg_write_1(sc, UDL_REG_SYNC, 0x00); 1757 udl_reg_write_1(sc, UDL_REG_COLORDEPTH, UDL_REG_COLORDEPTH_16); 1758 val = vmp->htotal - vmp->hsync_start; 1759 udl_reg_write_2(sc, UDL_REG_XDISPLAYSTART, udl_lfsr(val)); 1760 val += vmp->hdisplay; 1761 udl_reg_write_2(sc, UDL_REG_XDISPLAYEND, udl_lfsr(val)); 1762 val = vmp->vtotal - vmp->vsync_start; 1763 udl_reg_write_2(sc, UDL_REG_YDISPLAYSTART, udl_lfsr(val)); 1764 val += vmp->vdisplay; 1765 udl_reg_write_2(sc, UDL_REG_YDISPLAYEND, udl_lfsr(val)); 1766 val = vmp->htotal - 1; 1767 udl_reg_write_2(sc, UDL_REG_XENDCOUNT, udl_lfsr(val)); 1768 val = vmp->hsync_end - vmp->hsync_start + 1; 1769 if (vmp->flags & VID_PHSYNC) { 1770 udl_reg_write_2(sc, UDL_REG_HSYNCSTART, udl_lfsr(1)); 1771 udl_reg_write_2(sc, UDL_REG_HSYNCEND, udl_lfsr(val)); 1772 } else { 1773 udl_reg_write_2(sc, UDL_REG_HSYNCSTART, udl_lfsr(val)); 1774 udl_reg_write_2(sc, UDL_REG_HSYNCEND, udl_lfsr(1)); 1775 } 1776 val = vmp->hdisplay; 1777 udl_reg_write_2(sc, UDL_REG_HPIXELS, val); 1778 val = vmp->vtotal; 1779 udl_reg_write_2(sc, UDL_REG_YENDCOUNT, udl_lfsr(val)); 1780 val = vmp->vsync_end - vmp->vsync_start; 1781 if (vmp->flags & VID_PVSYNC) { 1782 udl_reg_write_2(sc, UDL_REG_VSYNCSTART, udl_lfsr(0)); 1783 udl_reg_write_2(sc, UDL_REG_VSYNCEND, udl_lfsr(val)); 1784 } else { 1785 udl_reg_write_2(sc, UDL_REG_VSYNCSTART, udl_lfsr(val)); 1786 udl_reg_write_2(sc, UDL_REG_VSYNCEND, udl_lfsr(0)); 1787 } 1788 val = vmp->vdisplay; 1789 udl_reg_write_2(sc, UDL_REG_VPIXELS, val); 1790 val = vmp->dot_clock / 5; 1791 udl_reg_write_2(sc, UDL_REG_PIXELCLOCK5KHZ, bswap16(val)); 1792 udl_reg_write_1(sc, UDL_REG_SYNC, 0xff); 1793 1794 if (udl_cmd_send(sc) != 0) 1795 return -1; 1796 1797 /* clear screen */ 1798 udl_fill_rect(sc, 0, 0, 0, sc->sc_width, sc->sc_height); 1799 1800 if (udl_cmd_send(sc) != 0) 1801 return -1; 1802 1803 /* show framebuffer content */ 1804 udl_blank(sc, 0); 1805 1806 if (udl_cmd_send(sc) != 0) 1807 return -1; 1808 1809 sc->sc_blank = WSDISPLAYIO_VIDEO_ON; 1810 1811 return 0; 1812 } 1813 1814 static const struct videomode * 1815 udl_videomode_lookup(const char *name) 1816 { 1817 int i; 1818 1819 for (i = 0; i < videomode_count; i++) 1820 if (strcmp(name, videomode_list[i].name) == 0) 1821 return &videomode_list[i]; 1822 1823 return NULL; 1824 } 1825 1826 static void 1827 udl_update_thread(void *v) 1828 { 1829 struct udl_softc *sc = v; 1830 uint16_t *fb, *fbcopy; 1831 int offs, stride, count = 0; 1832 1833 mutex_enter(&sc->sc_thread_mtx); 1834 1835 for (;;) { 1836 if (sc->sc_dying == true) { 1837 mutex_exit(&sc->sc_thread_mtx); 1838 kthread_exit(0); 1839 } 1840 1841 if (sc->sc_thread_stop == true || sc->sc_fbmem == NULL || 1842 sc->sc_fbmem_prev == NULL || sc->sc_width <= 0) 1843 goto thread_wait; 1844 1845 if (sc->sc_clear == true) 1846 count = 0; 1847 sc->sc_clear = false; 1848 1849 stride = uimin(sc->sc_width, UDL_CMD_WIDTH_MAX - 8); 1850 stride /= 8; 1851 fb = (uint16_t *)sc->sc_fbmem; 1852 fbcopy = (uint16_t *)sc->sc_fbmem_prev; 1853 for (offs = 0; offs < (sc->sc_height * sc->sc_width) - stride; 1854 offs += stride) { 1855 if (count % (hz / 5) == 0 || memcmp(&fb[offs], 1856 &fbcopy[offs], stride * sizeof(uint16_t)) != 0) { 1857 udl_draw_line(sc, &fb[offs], offs, stride); 1858 memcpy(&fbcopy[offs], &fb[offs], stride * 1859 sizeof(uint16_t)); 1860 } 1861 } 1862 count++; 1863 1864 kpause("udlslp", false, 1, &sc->sc_thread_mtx); 1865 continue; 1866 1867 thread_wait: 1868 cv_wait(&sc->sc_thread_cv, &sc->sc_thread_mtx); 1869 } 1870 } 1871 1872 static inline void 1873 udl_startstop(struct udl_softc *sc, bool stop) 1874 { 1875 mutex_enter(&sc->sc_thread_mtx); 1876 sc->sc_thread_stop = stop; 1877 if (!stop) { 1878 sc->sc_clear = true; 1879 cv_broadcast(&sc->sc_thread_cv); 1880 } 1881 mutex_exit(&sc->sc_thread_mtx); 1882 } 1883
Indexes created Tue Sep 23 14:10:03 GMT 2025