1 // SPDX-License-Identifier: GPL-2.0-or-later 2 3 #include <linux/module.h> 4 #include <linux/pci.h> 5 6 #include <drm/drm_aperture.h> 7 #include <drm/drm_atomic_helper.h> 8 #include <drm/drm_drv.h> 9 #include <drm/drm_edid.h> 10 #include <drm/drm_fbdev_generic.h> 11 #include <drm/drm_fourcc.h> 12 #include <drm/drm_framebuffer.h> 13 #include <drm/drm_gem_framebuffer_helper.h> 14 #include <drm/drm_gem_vram_helper.h> 15 #include <drm/drm_managed.h> 16 #include <drm/drm_module.h> 17 #include <drm/drm_probe_helper.h> 18 #include <drm/drm_simple_kms_helper.h> 19 20 #include <video/vga.h> 21 22 /* ---------------------------------------------------------------------- */ 23 24 #define VBE_DISPI_IOPORT_INDEX 0x01CE 25 #define VBE_DISPI_IOPORT_DATA 0x01CF 26 27 #define VBE_DISPI_INDEX_ID 0x0 28 #define VBE_DISPI_INDEX_XRES 0x1 29 #define VBE_DISPI_INDEX_YRES 0x2 30 #define VBE_DISPI_INDEX_BPP 0x3 31 #define VBE_DISPI_INDEX_ENABLE 0x4 32 #define VBE_DISPI_INDEX_BANK 0x5 33 #define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 34 #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 35 #define VBE_DISPI_INDEX_X_OFFSET 0x8 36 #define VBE_DISPI_INDEX_Y_OFFSET 0x9 37 #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa 38 39 #define VBE_DISPI_ID0 0xB0C0 40 #define VBE_DISPI_ID1 0xB0C1 41 #define VBE_DISPI_ID2 0xB0C2 42 #define VBE_DISPI_ID3 0xB0C3 43 #define VBE_DISPI_ID4 0xB0C4 44 #define VBE_DISPI_ID5 0xB0C5 45 46 #define VBE_DISPI_DISABLED 0x00 47 #define VBE_DISPI_ENABLED 0x01 48 #define VBE_DISPI_GETCAPS 0x02 49 #define VBE_DISPI_8BIT_DAC 0x20 50 #define VBE_DISPI_LFB_ENABLED 0x40 51 #define VBE_DISPI_NOCLEARMEM 0x80 52 53 static int bochs_modeset = -1; 54 static int defx = 1024; 55 static int defy = 768; 56 57 module_param_named(modeset, bochs_modeset, int, 0444); 58 MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting"); 59 60 module_param(defx, int, 0444); 61 module_param(defy, int, 0444); 62 MODULE_PARM_DESC(defx, "default x resolution"); 63 MODULE_PARM_DESC(defy, "default y resolution"); 64 65 /* ---------------------------------------------------------------------- */ 66 67 enum bochs_types { 68 BOCHS_QEMU_STDVGA, 69 BOCHS_SIMICS, 70 BOCHS_UNKNOWN, 71 }; 72 73 struct bochs_device { 74 /* hw */ 75 void __iomem *mmio; 76 int ioports; 77 void __iomem *fb_map; 78 unsigned long fb_base; 79 unsigned long fb_size; 80 unsigned long qext_size; 81 82 /* mode */ 83 u16 xres; 84 u16 yres; 85 u16 yres_virtual; 86 u32 stride; 87 u32 bpp; 88 struct edid *edid; 89 90 /* drm */ 91 struct drm_device *dev; 92 struct drm_simple_display_pipe pipe; 93 struct drm_connector connector; 94 }; 95 96 /* ---------------------------------------------------------------------- */ 97 bochs_vga_writeb(struct bochs_device * bochs,u16 ioport,u8 val)98 static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val) 99 { 100 if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) 101 return; 102 103 if (bochs->mmio) { 104 int offset = ioport - 0x3c0 + 0x400; 105 106 writeb(val, bochs->mmio + offset); 107 } else { 108 outb(val, ioport); 109 } 110 } 111 bochs_vga_readb(struct bochs_device * bochs,u16 ioport)112 static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport) 113 { 114 if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) 115 return 0xff; 116 117 if (bochs->mmio) { 118 int offset = ioport - 0x3c0 + 0x400; 119 120 return readb(bochs->mmio + offset); 121 } else { 122 return inb(ioport); 123 } 124 } 125 bochs_dispi_read(struct bochs_device * bochs,u16 reg)126 static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg) 127 { 128 u16 ret = 0; 129 130 if (bochs->mmio) { 131 int offset = 0x500 + (reg << 1); 132 133 ret = readw(bochs->mmio + offset); 134 } else { 135 outw(reg, VBE_DISPI_IOPORT_INDEX); 136 ret = inw(VBE_DISPI_IOPORT_DATA); 137 } 138 return ret; 139 } 140 bochs_dispi_write(struct bochs_device * bochs,u16 reg,u16 val)141 static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val) 142 { 143 if (bochs->mmio) { 144 int offset = 0x500 + (reg << 1); 145 146 writew(val, bochs->mmio + offset); 147 } else { 148 outw(reg, VBE_DISPI_IOPORT_INDEX); 149 outw(val, VBE_DISPI_IOPORT_DATA); 150 } 151 } 152 bochs_hw_set_big_endian(struct bochs_device * bochs)153 static void bochs_hw_set_big_endian(struct bochs_device *bochs) 154 { 155 if (bochs->qext_size < 8) 156 return; 157 158 writel(0xbebebebe, bochs->mmio + 0x604); 159 } 160 bochs_hw_set_little_endian(struct bochs_device * bochs)161 static void bochs_hw_set_little_endian(struct bochs_device *bochs) 162 { 163 if (bochs->qext_size < 8) 164 return; 165 166 writel(0x1e1e1e1e, bochs->mmio + 0x604); 167 } 168 169 #ifdef __BIG_ENDIAN 170 #define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b) 171 #else 172 #define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) 173 #endif 174 bochs_get_edid_block(void * data,u8 * buf,unsigned int block,size_t len)175 static int bochs_get_edid_block(void *data, u8 *buf, 176 unsigned int block, size_t len) 177 { 178 struct bochs_device *bochs = data; 179 size_t i, start = block * EDID_LENGTH; 180 181 if (start + len > 0x400 /* vga register offset */) 182 return -1; 183 184 for (i = 0; i < len; i++) 185 buf[i] = readb(bochs->mmio + start + i); 186 187 return 0; 188 } 189 bochs_hw_load_edid(struct bochs_device * bochs)190 static int bochs_hw_load_edid(struct bochs_device *bochs) 191 { 192 u8 header[8]; 193 194 if (!bochs->mmio) 195 return -1; 196 197 /* check header to detect whenever edid support is enabled in qemu */ 198 bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); 199 if (drm_edid_header_is_valid(header) != 8) 200 return -1; 201 202 kfree(bochs->edid); 203 bochs->edid = drm_do_get_edid(&bochs->connector, 204 bochs_get_edid_block, bochs); 205 if (bochs->edid == NULL) 206 return -1; 207 208 return 0; 209 } 210 bochs_hw_init(struct drm_device * dev)211 static int bochs_hw_init(struct drm_device *dev) 212 { 213 struct bochs_device *bochs = dev->dev_private; 214 struct pci_dev *pdev = to_pci_dev(dev->dev); 215 unsigned long addr, size, mem, ioaddr, iosize; 216 u16 id; 217 218 if (pdev->resource[2].flags & IORESOURCE_MEM) { 219 /* mmio bar with vga and bochs registers present */ 220 if (pci_request_region(pdev, 2, "bochs-drm") != 0) { 221 DRM_ERROR("Cannot request mmio region\n"); 222 return -EBUSY; 223 } 224 ioaddr = pci_resource_start(pdev, 2); 225 iosize = pci_resource_len(pdev, 2); 226 bochs->mmio = ioremap(ioaddr, iosize); 227 if (bochs->mmio == NULL) { 228 DRM_ERROR("Cannot map mmio region\n"); 229 return -ENOMEM; 230 } 231 } else { 232 ioaddr = VBE_DISPI_IOPORT_INDEX; 233 iosize = 2; 234 if (!request_region(ioaddr, iosize, "bochs-drm")) { 235 DRM_ERROR("Cannot request ioports\n"); 236 return -EBUSY; 237 } 238 bochs->ioports = 1; 239 } 240 241 id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID); 242 mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) 243 * 64 * 1024; 244 if ((id & 0xfff0) != VBE_DISPI_ID0) { 245 DRM_ERROR("ID mismatch\n"); 246 return -ENODEV; 247 } 248 249 if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) 250 return -ENODEV; 251 addr = pci_resource_start(pdev, 0); 252 size = pci_resource_len(pdev, 0); 253 if (addr == 0) 254 return -ENODEV; 255 if (size != mem) { 256 DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n", 257 size, mem); 258 size = min(size, mem); 259 } 260 261 if (pci_request_region(pdev, 0, "bochs-drm") != 0) 262 DRM_WARN("Cannot request framebuffer, boot fb still active?\n"); 263 264 bochs->fb_map = ioremap(addr, size); 265 if (bochs->fb_map == NULL) { 266 DRM_ERROR("Cannot map framebuffer\n"); 267 return -ENOMEM; 268 } 269 bochs->fb_base = addr; 270 bochs->fb_size = size; 271 272 DRM_INFO("Found bochs VGA, ID 0x%x.\n", id); 273 DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n", 274 size / 1024, addr, 275 bochs->ioports ? "ioports" : "mmio", 276 ioaddr); 277 278 if (bochs->mmio && pdev->revision >= 2) { 279 bochs->qext_size = readl(bochs->mmio + 0x600); 280 if (bochs->qext_size < 4 || bochs->qext_size > iosize) { 281 bochs->qext_size = 0; 282 goto noext; 283 } 284 DRM_DEBUG("Found qemu ext regs, size %ld\n", 285 bochs->qext_size); 286 bochs_hw_set_native_endian(bochs); 287 } 288 289 noext: 290 return 0; 291 } 292 bochs_hw_fini(struct drm_device * dev)293 static void bochs_hw_fini(struct drm_device *dev) 294 { 295 struct bochs_device *bochs = dev->dev_private; 296 297 /* TODO: shot down existing vram mappings */ 298 299 if (bochs->mmio) 300 iounmap(bochs->mmio); 301 if (bochs->ioports) 302 release_region(VBE_DISPI_IOPORT_INDEX, 2); 303 if (bochs->fb_map) 304 iounmap(bochs->fb_map); 305 pci_release_regions(to_pci_dev(dev->dev)); 306 kfree(bochs->edid); 307 } 308 bochs_hw_blank(struct bochs_device * bochs,bool blank)309 static void bochs_hw_blank(struct bochs_device *bochs, bool blank) 310 { 311 DRM_DEBUG_DRIVER("hw_blank %d\n", blank); 312 /* enable color bit (so VGA_IS1_RC access works) */ 313 bochs_vga_writeb(bochs, VGA_MIS_W, VGA_MIS_COLOR); 314 /* discard ar_flip_flop */ 315 (void)bochs_vga_readb(bochs, VGA_IS1_RC); 316 /* blank or unblank; we need only update index and set 0x20 */ 317 bochs_vga_writeb(bochs, VGA_ATT_W, blank ? 0 : 0x20); 318 } 319 bochs_hw_setmode(struct bochs_device * bochs,struct drm_display_mode * mode)320 static void bochs_hw_setmode(struct bochs_device *bochs, struct drm_display_mode *mode) 321 { 322 int idx; 323 324 if (!drm_dev_enter(bochs->dev, &idx)) 325 return; 326 327 bochs->xres = mode->hdisplay; 328 bochs->yres = mode->vdisplay; 329 bochs->bpp = 32; 330 bochs->stride = mode->hdisplay * (bochs->bpp / 8); 331 bochs->yres_virtual = bochs->fb_size / bochs->stride; 332 333 DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n", 334 bochs->xres, bochs->yres, bochs->bpp, 335 bochs->yres_virtual); 336 337 bochs_hw_blank(bochs, false); 338 339 bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); 340 bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); 341 bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); 342 bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); 343 bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0); 344 bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres); 345 bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT, 346 bochs->yres_virtual); 347 bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0); 348 bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0); 349 350 bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 351 VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); 352 353 drm_dev_exit(idx); 354 } 355 bochs_hw_setformat(struct bochs_device * bochs,const struct drm_format_info * format)356 static void bochs_hw_setformat(struct bochs_device *bochs, const struct drm_format_info *format) 357 { 358 int idx; 359 360 if (!drm_dev_enter(bochs->dev, &idx)) 361 return; 362 363 DRM_DEBUG_DRIVER("format %c%c%c%c\n", 364 (format->format >> 0) & 0xff, 365 (format->format >> 8) & 0xff, 366 (format->format >> 16) & 0xff, 367 (format->format >> 24) & 0xff); 368 369 switch (format->format) { 370 case DRM_FORMAT_XRGB8888: 371 bochs_hw_set_little_endian(bochs); 372 break; 373 case DRM_FORMAT_BGRX8888: 374 bochs_hw_set_big_endian(bochs); 375 break; 376 default: 377 /* should not happen */ 378 DRM_ERROR("%s: Huh? Got framebuffer format 0x%x", 379 __func__, format->format); 380 break; 381 } 382 383 drm_dev_exit(idx); 384 } 385 bochs_hw_setbase(struct bochs_device * bochs,int x,int y,int stride,u64 addr)386 static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int stride, u64 addr) 387 { 388 unsigned long offset; 389 unsigned int vx, vy, vwidth, idx; 390 391 if (!drm_dev_enter(bochs->dev, &idx)) 392 return; 393 394 bochs->stride = stride; 395 offset = (unsigned long)addr + 396 y * bochs->stride + 397 x * (bochs->bpp / 8); 398 vy = offset / bochs->stride; 399 vx = (offset % bochs->stride) * 8 / bochs->bpp; 400 vwidth = stride * 8 / bochs->bpp; 401 402 DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n", 403 x, y, addr, offset, vx, vy); 404 bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth); 405 bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx); 406 bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy); 407 408 drm_dev_exit(idx); 409 } 410 411 /* ---------------------------------------------------------------------- */ 412 413 static const uint32_t bochs_formats[] = { 414 DRM_FORMAT_XRGB8888, 415 DRM_FORMAT_BGRX8888, 416 }; 417 bochs_plane_update(struct bochs_device * bochs,struct drm_plane_state * state)418 static void bochs_plane_update(struct bochs_device *bochs, struct drm_plane_state *state) 419 { 420 struct drm_gem_vram_object *gbo; 421 s64 gpu_addr; 422 423 if (!state->fb || !bochs->stride) 424 return; 425 426 gbo = drm_gem_vram_of_gem(state->fb->obj[0]); 427 gpu_addr = drm_gem_vram_offset(gbo); 428 if (WARN_ON_ONCE(gpu_addr < 0)) 429 return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */ 430 431 bochs_hw_setbase(bochs, 432 state->crtc_x, 433 state->crtc_y, 434 state->fb->pitches[0], 435 state->fb->offsets[0] + gpu_addr); 436 bochs_hw_setformat(bochs, state->fb->format); 437 } 438 bochs_pipe_enable(struct drm_simple_display_pipe * pipe,struct drm_crtc_state * crtc_state,struct drm_plane_state * plane_state)439 static void bochs_pipe_enable(struct drm_simple_display_pipe *pipe, 440 struct drm_crtc_state *crtc_state, 441 struct drm_plane_state *plane_state) 442 { 443 struct bochs_device *bochs = pipe->crtc.dev->dev_private; 444 445 bochs_hw_setmode(bochs, &crtc_state->mode); 446 bochs_plane_update(bochs, plane_state); 447 } 448 bochs_pipe_disable(struct drm_simple_display_pipe * pipe)449 static void bochs_pipe_disable(struct drm_simple_display_pipe *pipe) 450 { 451 struct bochs_device *bochs = pipe->crtc.dev->dev_private; 452 453 bochs_hw_blank(bochs, true); 454 } 455 bochs_pipe_update(struct drm_simple_display_pipe * pipe,struct drm_plane_state * old_state)456 static void bochs_pipe_update(struct drm_simple_display_pipe *pipe, 457 struct drm_plane_state *old_state) 458 { 459 struct bochs_device *bochs = pipe->crtc.dev->dev_private; 460 461 bochs_plane_update(bochs, pipe->plane.state); 462 } 463 464 static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = { 465 .enable = bochs_pipe_enable, 466 .disable = bochs_pipe_disable, 467 .update = bochs_pipe_update, 468 .prepare_fb = drm_gem_vram_simple_display_pipe_prepare_fb, 469 .cleanup_fb = drm_gem_vram_simple_display_pipe_cleanup_fb, 470 }; 471 bochs_connector_get_modes(struct drm_connector * connector)472 static int bochs_connector_get_modes(struct drm_connector *connector) 473 { 474 struct bochs_device *bochs = 475 container_of(connector, struct bochs_device, connector); 476 int count = 0; 477 478 if (bochs->edid) 479 count = drm_add_edid_modes(connector, bochs->edid); 480 481 if (!count) { 482 count = drm_add_modes_noedid(connector, 8192, 8192); 483 drm_set_preferred_mode(connector, defx, defy); 484 } 485 return count; 486 } 487 488 static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = { 489 .get_modes = bochs_connector_get_modes, 490 }; 491 492 static const struct drm_connector_funcs bochs_connector_connector_funcs = { 493 .fill_modes = drm_helper_probe_single_connector_modes, 494 .destroy = drm_connector_cleanup, 495 .reset = drm_atomic_helper_connector_reset, 496 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 497 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 498 }; 499 bochs_connector_init(struct drm_device * dev)500 static void bochs_connector_init(struct drm_device *dev) 501 { 502 struct bochs_device *bochs = dev->dev_private; 503 struct drm_connector *connector = &bochs->connector; 504 505 drm_connector_init(dev, connector, &bochs_connector_connector_funcs, 506 DRM_MODE_CONNECTOR_VIRTUAL); 507 drm_connector_helper_add(connector, &bochs_connector_connector_helper_funcs); 508 509 bochs_hw_load_edid(bochs); 510 if (bochs->edid) { 511 DRM_INFO("Found EDID data blob.\n"); 512 drm_connector_attach_edid_property(connector); 513 drm_connector_update_edid_property(connector, bochs->edid); 514 } 515 } 516 517 static struct drm_framebuffer * bochs_gem_fb_create(struct drm_device * dev,struct drm_file * file,const struct drm_mode_fb_cmd2 * mode_cmd)518 bochs_gem_fb_create(struct drm_device *dev, struct drm_file *file, 519 const struct drm_mode_fb_cmd2 *mode_cmd) 520 { 521 if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888 && 522 mode_cmd->pixel_format != DRM_FORMAT_BGRX8888) 523 return ERR_PTR(-EINVAL); 524 525 return drm_gem_fb_create(dev, file, mode_cmd); 526 } 527 528 static const struct drm_mode_config_funcs bochs_mode_funcs = { 529 .fb_create = bochs_gem_fb_create, 530 .mode_valid = drm_vram_helper_mode_valid, 531 .atomic_check = drm_atomic_helper_check, 532 .atomic_commit = drm_atomic_helper_commit, 533 }; 534 bochs_kms_init(struct bochs_device * bochs)535 static int bochs_kms_init(struct bochs_device *bochs) 536 { 537 int ret; 538 539 ret = drmm_mode_config_init(bochs->dev); 540 if (ret) 541 return ret; 542 543 bochs->dev->mode_config.max_width = 8192; 544 bochs->dev->mode_config.max_height = 8192; 545 546 bochs->dev->mode_config.preferred_depth = 24; 547 bochs->dev->mode_config.prefer_shadow = 0; 548 bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true; 549 550 bochs->dev->mode_config.funcs = &bochs_mode_funcs; 551 552 bochs_connector_init(bochs->dev); 553 drm_simple_display_pipe_init(bochs->dev, 554 &bochs->pipe, 555 &bochs_pipe_funcs, 556 bochs_formats, 557 ARRAY_SIZE(bochs_formats), 558 NULL, 559 &bochs->connector); 560 561 drm_mode_config_reset(bochs->dev); 562 563 return 0; 564 } 565 566 /* ---------------------------------------------------------------------- */ 567 /* drm interface */ 568 bochs_load(struct drm_device * dev)569 static int bochs_load(struct drm_device *dev) 570 { 571 struct bochs_device *bochs; 572 int ret; 573 574 bochs = drmm_kzalloc(dev, sizeof(*bochs), GFP_KERNEL); 575 if (bochs == NULL) 576 return -ENOMEM; 577 dev->dev_private = bochs; 578 bochs->dev = dev; 579 580 ret = bochs_hw_init(dev); 581 if (ret) 582 return ret; 583 584 ret = drmm_vram_helper_init(dev, bochs->fb_base, bochs->fb_size); 585 if (ret) 586 goto err_hw_fini; 587 588 ret = bochs_kms_init(bochs); 589 if (ret) 590 goto err_hw_fini; 591 592 return 0; 593 594 err_hw_fini: 595 bochs_hw_fini(dev); 596 return ret; 597 } 598 599 DEFINE_DRM_GEM_FOPS(bochs_fops); 600 601 static const struct drm_driver bochs_driver = { 602 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 603 .fops = &bochs_fops, 604 .name = "bochs-drm", 605 .desc = "bochs dispi vga interface (qemu stdvga)", 606 .date = "20130925", 607 .major = 1, 608 .minor = 0, 609 DRM_GEM_VRAM_DRIVER, 610 }; 611 612 /* ---------------------------------------------------------------------- */ 613 /* pm interface */ 614 615 #ifdef CONFIG_PM_SLEEP bochs_pm_suspend(struct device * dev)616 static int bochs_pm_suspend(struct device *dev) 617 { 618 struct drm_device *drm_dev = dev_get_drvdata(dev); 619 620 return drm_mode_config_helper_suspend(drm_dev); 621 } 622 bochs_pm_resume(struct device * dev)623 static int bochs_pm_resume(struct device *dev) 624 { 625 struct drm_device *drm_dev = dev_get_drvdata(dev); 626 627 return drm_mode_config_helper_resume(drm_dev); 628 } 629 #endif 630 631 static const struct dev_pm_ops bochs_pm_ops = { 632 SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend, 633 bochs_pm_resume) 634 }; 635 636 /* ---------------------------------------------------------------------- */ 637 /* pci interface */ 638 bochs_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)639 static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 640 { 641 struct drm_device *dev; 642 unsigned long fbsize; 643 int ret; 644 645 fbsize = pci_resource_len(pdev, 0); 646 if (fbsize < 4 * 1024 * 1024) { 647 DRM_ERROR("less than 4 MB video memory, ignoring device\n"); 648 return -ENOMEM; 649 } 650 651 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &bochs_driver); 652 if (ret) 653 return ret; 654 655 dev = drm_dev_alloc(&bochs_driver, &pdev->dev); 656 if (IS_ERR(dev)) 657 return PTR_ERR(dev); 658 659 ret = pcim_enable_device(pdev); 660 if (ret) 661 goto err_free_dev; 662 663 pci_set_drvdata(pdev, dev); 664 665 ret = bochs_load(dev); 666 if (ret) 667 goto err_free_dev; 668 669 ret = drm_dev_register(dev, 0); 670 if (ret) 671 goto err_hw_fini; 672 673 drm_fbdev_generic_setup(dev, 32); 674 return ret; 675 676 err_hw_fini: 677 bochs_hw_fini(dev); 678 err_free_dev: 679 drm_dev_put(dev); 680 return ret; 681 } 682 bochs_pci_remove(struct pci_dev * pdev)683 static void bochs_pci_remove(struct pci_dev *pdev) 684 { 685 struct drm_device *dev = pci_get_drvdata(pdev); 686 687 drm_dev_unplug(dev); 688 drm_atomic_helper_shutdown(dev); 689 bochs_hw_fini(dev); 690 drm_dev_put(dev); 691 } 692 693 static const struct pci_device_id bochs_pci_tbl[] = { 694 { 695 .vendor = 0x1234, 696 .device = 0x1111, 697 .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET, 698 .subdevice = PCI_SUBDEVICE_ID_QEMU, 699 .driver_data = BOCHS_QEMU_STDVGA, 700 }, 701 { 702 .vendor = 0x1234, 703 .device = 0x1111, 704 .subvendor = PCI_ANY_ID, 705 .subdevice = PCI_ANY_ID, 706 .driver_data = BOCHS_UNKNOWN, 707 }, 708 { 709 .vendor = 0x4321, 710 .device = 0x1111, 711 .subvendor = PCI_ANY_ID, 712 .subdevice = PCI_ANY_ID, 713 .driver_data = BOCHS_SIMICS, 714 }, 715 { /* end of list */ } 716 }; 717 718 static struct pci_driver bochs_pci_driver = { 719 .name = "bochs-drm", 720 .id_table = bochs_pci_tbl, 721 .probe = bochs_pci_probe, 722 .remove = bochs_pci_remove, 723 .driver.pm = &bochs_pm_ops, 724 }; 725 726 /* ---------------------------------------------------------------------- */ 727 /* module init/exit */ 728 729 drm_module_pci_driver_if_modeset(bochs_pci_driver, bochs_modeset); 730 731 MODULE_DEVICE_TABLE(pci, bochs_pci_tbl); 732 MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>"); 733 MODULE_LICENSE("GPL"); 734