1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sub license, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 18 * USE OR OTHER DEALINGS IN THE SOFTWARE. 19 * 20 * The above copyright notice and this permission notice (including the 21 * next paragraph) shall be included in all copies or substantial portions 22 * of the Software. 23 * 24 */ 25 /* 26 * Authors: Dave Airlie <airlied@redhat.com> 27 */ 28 #include <drm/drmP.h> 29 #include "ast_drv.h" 30 31 32 #include <drm/drm_fb_helper.h> 33 #include <drm/drm_crtc_helper.h> 34 35 #include "ast_dram_tables.h" 36 37 void ast_set_index_reg_mask(struct ast_private *ast, 38 uint32_t base, uint8_t index, 39 uint8_t mask, uint8_t val) 40 { 41 u8 tmp; 42 ast_io_write8(ast, base, index); 43 tmp = (ast_io_read8(ast, base + 1) & mask) | val; 44 ast_set_index_reg(ast, base, index, tmp); 45 } 46 47 uint8_t ast_get_index_reg(struct ast_private *ast, 48 uint32_t base, uint8_t index) 49 { 50 uint8_t ret; 51 ast_io_write8(ast, base, index); 52 ret = ast_io_read8(ast, base + 1); 53 return ret; 54 } 55 56 uint8_t ast_get_index_reg_mask(struct ast_private *ast, 57 uint32_t base, uint8_t index, uint8_t mask) 58 { 59 uint8_t ret; 60 ast_io_write8(ast, base, index); 61 ret = ast_io_read8(ast, base + 1) & mask; 62 return ret; 63 } 64 65 66 static int ast_detect_chip(struct drm_device *dev, bool *need_post) 67 { 68 struct ast_private *ast = dev->dev_private; 69 uint32_t data, jreg; 70 ast_open_key(ast); 71 72 if (dev->pdev->device == PCI_CHIP_AST1180) { 73 ast->chip = AST1100; 74 DRM_INFO("AST 1180 detected\n"); 75 } else { 76 if (dev->pdev->revision >= 0x30) { 77 ast->chip = AST2400; 78 DRM_INFO("AST 2400 detected\n"); 79 } else if (dev->pdev->revision >= 0x20) { 80 ast->chip = AST2300; 81 DRM_INFO("AST 2300 detected\n"); 82 } else if (dev->pdev->revision >= 0x10) { 83 uint32_t data; 84 ast_write32(ast, 0xf004, 0x1e6e0000); 85 ast_write32(ast, 0xf000, 0x1); 86 87 data = ast_read32(ast, 0x1207c); 88 switch (data & 0x0300) { 89 case 0x0200: 90 ast->chip = AST1100; 91 DRM_INFO("AST 1100 detected\n"); 92 break; 93 case 0x0100: 94 ast->chip = AST2200; 95 DRM_INFO("AST 2200 detected\n"); 96 break; 97 case 0x0000: 98 ast->chip = AST2150; 99 DRM_INFO("AST 2150 detected\n"); 100 break; 101 default: 102 ast->chip = AST2100; 103 DRM_INFO("AST 2100 detected\n"); 104 break; 105 } 106 ast->vga2_clone = false; 107 } else { 108 ast->chip = AST2000; 109 DRM_INFO("AST 2000 detected\n"); 110 } 111 } 112 113 /* 114 * If VGA isn't enabled, we need to enable now or subsequent 115 * access to the scratch registers will fail. We also inform 116 * our caller that it needs to POST the chip 117 * (Assumption: VGA not enabled -> need to POST) 118 */ 119 if (!ast_is_vga_enabled(dev)) { 120 ast_enable_vga(dev); 121 ast_enable_mmio(dev); 122 DRM_INFO("VGA not enabled on entry, requesting chip POST\n"); 123 *need_post = true; 124 } else 125 *need_post = false; 126 127 /* Check if we support wide screen */ 128 switch (ast->chip) { 129 case AST1180: 130 ast->support_wide_screen = true; 131 break; 132 case AST2000: 133 ast->support_wide_screen = false; 134 break; 135 default: 136 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); 137 if (!(jreg & 0x80)) 138 ast->support_wide_screen = true; 139 else if (jreg & 0x01) 140 ast->support_wide_screen = true; 141 else { 142 ast->support_wide_screen = false; 143 /* Read SCU7c (silicon revision register) */ 144 ast_write32(ast, 0xf004, 0x1e6e0000); 145 ast_write32(ast, 0xf000, 0x1); 146 data = ast_read32(ast, 0x1207c); 147 data &= 0x300; 148 if (ast->chip == AST2300 && data == 0x0) /* ast1300 */ 149 ast->support_wide_screen = true; 150 if (ast->chip == AST2400 && data == 0x100) /* ast1400 */ 151 ast->support_wide_screen = true; 152 } 153 break; 154 } 155 156 /* Check 3rd Tx option (digital output afaik) */ 157 ast->tx_chip_type = AST_TX_NONE; 158 159 /* 160 * VGACRA3 Enhanced Color Mode Register, check if DVO is already 161 * enabled, in that case, assume we have a SIL164 TMDS transmitter 162 * 163 * Don't make that assumption if we the chip wasn't enabled and 164 * is at power-on reset, otherwise we'll incorrectly "detect" a 165 * SIL164 when there is none. 166 */ 167 if (!*need_post) { 168 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff); 169 if (jreg & 0x80) 170 ast->tx_chip_type = AST_TX_SIL164; 171 } 172 173 if ((ast->chip == AST2300) || (ast->chip == AST2400)) { 174 /* 175 * On AST2300 and 2400, look the configuration set by the SoC in 176 * the SOC scratch register #1 bits 11:8 (interestingly marked 177 * as "reserved" in the spec) 178 */ 179 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); 180 switch (jreg) { 181 case 0x04: 182 ast->tx_chip_type = AST_TX_SIL164; 183 break; 184 case 0x08: 185 ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL); 186 if (ast->dp501_fw_addr) { 187 /* backup firmware */ 188 if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) { 189 kfree(ast->dp501_fw_addr); 190 ast->dp501_fw_addr = NULL; 191 } 192 } 193 /* fallthrough */ 194 case 0x0c: 195 ast->tx_chip_type = AST_TX_DP501; 196 } 197 } 198 199 /* Print stuff for diagnostic purposes */ 200 switch(ast->tx_chip_type) { 201 case AST_TX_SIL164: 202 DRM_INFO("Using Sil164 TMDS transmitter\n"); 203 break; 204 case AST_TX_DP501: 205 DRM_INFO("Using DP501 DisplayPort transmitter\n"); 206 break; 207 default: 208 DRM_INFO("Analog VGA only\n"); 209 } 210 return 0; 211 } 212 213 static int ast_get_dram_info(struct drm_device *dev) 214 { 215 struct ast_private *ast = dev->dev_private; 216 uint32_t data, data2; 217 uint32_t denum, num, div, ref_pll; 218 219 ast_write32(ast, 0xf004, 0x1e6e0000); 220 ast_write32(ast, 0xf000, 0x1); 221 222 223 ast_write32(ast, 0x10000, 0xfc600309); 224 225 do { 226 if (pci_channel_offline(dev->pdev)) 227 return -EIO; 228 } while (ast_read32(ast, 0x10000) != 0x01); 229 data = ast_read32(ast, 0x10004); 230 231 if (data & 0x40) 232 ast->dram_bus_width = 16; 233 else 234 ast->dram_bus_width = 32; 235 236 if (ast->chip == AST2300 || ast->chip == AST2400) { 237 switch (data & 0x03) { 238 case 0: 239 ast->dram_type = AST_DRAM_512Mx16; 240 break; 241 default: 242 case 1: 243 ast->dram_type = AST_DRAM_1Gx16; 244 break; 245 case 2: 246 ast->dram_type = AST_DRAM_2Gx16; 247 break; 248 case 3: 249 ast->dram_type = AST_DRAM_4Gx16; 250 break; 251 } 252 } else { 253 switch (data & 0x0c) { 254 case 0: 255 case 4: 256 ast->dram_type = AST_DRAM_512Mx16; 257 break; 258 case 8: 259 if (data & 0x40) 260 ast->dram_type = AST_DRAM_1Gx16; 261 else 262 ast->dram_type = AST_DRAM_512Mx32; 263 break; 264 case 0xc: 265 ast->dram_type = AST_DRAM_1Gx32; 266 break; 267 } 268 } 269 270 data = ast_read32(ast, 0x10120); 271 data2 = ast_read32(ast, 0x10170); 272 if (data2 & 0x2000) 273 ref_pll = 14318; 274 else 275 ref_pll = 12000; 276 277 denum = data & 0x1f; 278 num = (data & 0x3fe0) >> 5; 279 data = (data & 0xc000) >> 14; 280 switch (data) { 281 case 3: 282 div = 0x4; 283 break; 284 case 2: 285 case 1: 286 div = 0x2; 287 break; 288 default: 289 div = 0x1; 290 break; 291 } 292 ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000); 293 return 0; 294 } 295 296 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb) 297 { 298 struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb); 299 300 drm_gem_object_unreference_unlocked(ast_fb->obj); 301 drm_framebuffer_cleanup(fb); 302 kfree(fb); 303 } 304 305 static const struct drm_framebuffer_funcs ast_fb_funcs = { 306 .destroy = ast_user_framebuffer_destroy, 307 }; 308 309 310 int ast_framebuffer_init(struct drm_device *dev, 311 struct ast_framebuffer *ast_fb, 312 const struct drm_mode_fb_cmd2 *mode_cmd, 313 struct drm_gem_object *obj) 314 { 315 int ret; 316 317 drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd); 318 ast_fb->obj = obj; 319 ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs); 320 if (ret) { 321 DRM_ERROR("framebuffer init failed %d\n", ret); 322 return ret; 323 } 324 return 0; 325 } 326 327 static struct drm_framebuffer * 328 ast_user_framebuffer_create(struct drm_device *dev, 329 struct drm_file *filp, 330 const struct drm_mode_fb_cmd2 *mode_cmd) 331 { 332 struct drm_gem_object *obj; 333 struct ast_framebuffer *ast_fb; 334 int ret; 335 336 obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 337 if (obj == NULL) 338 return ERR_PTR(-ENOENT); 339 340 ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL); 341 if (!ast_fb) { 342 drm_gem_object_unreference_unlocked(obj); 343 return ERR_PTR(-ENOMEM); 344 } 345 346 ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj); 347 if (ret) { 348 drm_gem_object_unreference_unlocked(obj); 349 kfree(ast_fb); 350 return ERR_PTR(ret); 351 } 352 return &ast_fb->base; 353 } 354 355 static const struct drm_mode_config_funcs ast_mode_funcs = { 356 .fb_create = ast_user_framebuffer_create, 357 }; 358 359 static u32 ast_get_vram_info(struct drm_device *dev) 360 { 361 struct ast_private *ast = dev->dev_private; 362 u8 jreg; 363 u32 vram_size; 364 ast_open_key(ast); 365 366 vram_size = AST_VIDMEM_DEFAULT_SIZE; 367 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); 368 switch (jreg & 3) { 369 case 0: vram_size = AST_VIDMEM_SIZE_8M; break; 370 case 1: vram_size = AST_VIDMEM_SIZE_16M; break; 371 case 2: vram_size = AST_VIDMEM_SIZE_32M; break; 372 case 3: vram_size = AST_VIDMEM_SIZE_64M; break; 373 } 374 375 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff); 376 switch (jreg & 0x03) { 377 case 1: 378 vram_size -= 0x100000; 379 break; 380 case 2: 381 vram_size -= 0x200000; 382 break; 383 case 3: 384 vram_size -= 0x400000; 385 break; 386 } 387 388 return vram_size; 389 } 390 391 int ast_driver_load(struct drm_device *dev, unsigned long flags) 392 { 393 struct ast_private *ast; 394 bool need_post; 395 int ret = 0; 396 397 ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL); 398 if (!ast) 399 return -ENOMEM; 400 401 dev->dev_private = ast; 402 ast->dev = dev; 403 404 ast->regs = pci_iomap(dev->pdev, 1, 0); 405 if (!ast->regs) { 406 ret = -EIO; 407 goto out_free; 408 } 409 410 /* 411 * If we don't have IO space at all, use MMIO now and 412 * assume the chip has MMIO enabled by default (rev 0x20 413 * and higher). 414 */ 415 if (!(pci_resource_flags(dev->pdev, 2) & IORESOURCE_IO)) { 416 DRM_INFO("platform has no IO space, trying MMIO\n"); 417 ast->ioregs = ast->regs + AST_IO_MM_OFFSET; 418 } 419 420 /* "map" IO regs if the above hasn't done so already */ 421 if (!ast->ioregs) { 422 ast->ioregs = pci_iomap(dev->pdev, 2, 0); 423 if (!ast->ioregs) { 424 ret = -EIO; 425 goto out_free; 426 } 427 } 428 429 ast_detect_chip(dev, &need_post); 430 431 if (ast->chip != AST1180) { 432 ret = ast_get_dram_info(dev); 433 if (ret) 434 goto out_free; 435 ast->vram_size = ast_get_vram_info(dev); 436 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size); 437 } 438 439 if (need_post) 440 ast_post_gpu(dev); 441 442 ret = ast_mm_init(ast); 443 if (ret) 444 goto out_free; 445 446 drm_mode_config_init(dev); 447 448 dev->mode_config.funcs = (void *)&ast_mode_funcs; 449 dev->mode_config.min_width = 0; 450 dev->mode_config.min_height = 0; 451 dev->mode_config.preferred_depth = 24; 452 dev->mode_config.prefer_shadow = 1; 453 dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0); 454 455 if (ast->chip == AST2100 || 456 ast->chip == AST2200 || 457 ast->chip == AST2300 || 458 ast->chip == AST2400 || 459 ast->chip == AST1180) { 460 dev->mode_config.max_width = 1920; 461 dev->mode_config.max_height = 2048; 462 } else { 463 dev->mode_config.max_width = 1600; 464 dev->mode_config.max_height = 1200; 465 } 466 467 ret = ast_mode_init(dev); 468 if (ret) 469 goto out_free; 470 471 ret = ast_fbdev_init(dev); 472 if (ret) 473 goto out_free; 474 475 return 0; 476 out_free: 477 kfree(ast); 478 dev->dev_private = NULL; 479 return ret; 480 } 481 482 int ast_driver_unload(struct drm_device *dev) 483 { 484 struct ast_private *ast = dev->dev_private; 485 486 kfree(ast->dp501_fw_addr); 487 ast_mode_fini(dev); 488 ast_fbdev_fini(dev); 489 drm_mode_config_cleanup(dev); 490 491 ast_mm_fini(ast); 492 pci_iounmap(dev->pdev, ast->ioregs); 493 pci_iounmap(dev->pdev, ast->regs); 494 kfree(ast); 495 return 0; 496 } 497 498 int ast_gem_create(struct drm_device *dev, 499 u32 size, bool iskernel, 500 struct drm_gem_object **obj) 501 { 502 struct ast_bo *astbo; 503 int ret; 504 505 *obj = NULL; 506 507 size = roundup(size, PAGE_SIZE); 508 if (size == 0) 509 return -EINVAL; 510 511 ret = ast_bo_create(dev, size, 0, 0, &astbo); 512 if (ret) { 513 if (ret != -ERESTARTSYS) 514 DRM_ERROR("failed to allocate GEM object\n"); 515 return ret; 516 } 517 *obj = &astbo->gem; 518 return 0; 519 } 520 521 int ast_dumb_create(struct drm_file *file, 522 struct drm_device *dev, 523 struct drm_mode_create_dumb *args) 524 { 525 int ret; 526 struct drm_gem_object *gobj; 527 u32 handle; 528 529 args->pitch = args->width * ((args->bpp + 7) / 8); 530 args->size = args->pitch * args->height; 531 532 ret = ast_gem_create(dev, args->size, false, 533 &gobj); 534 if (ret) 535 return ret; 536 537 ret = drm_gem_handle_create(file, gobj, &handle); 538 drm_gem_object_unreference_unlocked(gobj); 539 if (ret) 540 return ret; 541 542 args->handle = handle; 543 return 0; 544 } 545 546 static void ast_bo_unref(struct ast_bo **bo) 547 { 548 struct ttm_buffer_object *tbo; 549 550 if ((*bo) == NULL) 551 return; 552 553 tbo = &((*bo)->bo); 554 ttm_bo_unref(&tbo); 555 *bo = NULL; 556 } 557 558 void ast_gem_free_object(struct drm_gem_object *obj) 559 { 560 struct ast_bo *ast_bo = gem_to_ast_bo(obj); 561 562 ast_bo_unref(&ast_bo); 563 } 564 565 566 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo) 567 { 568 return drm_vma_node_offset_addr(&bo->bo.vma_node); 569 } 570 int 571 ast_dumb_mmap_offset(struct drm_file *file, 572 struct drm_device *dev, 573 uint32_t handle, 574 uint64_t *offset) 575 { 576 struct drm_gem_object *obj; 577 struct ast_bo *bo; 578 579 obj = drm_gem_object_lookup(file, handle); 580 if (obj == NULL) 581 return -ENOENT; 582 583 bo = gem_to_ast_bo(obj); 584 *offset = ast_bo_mmap_offset(bo); 585 586 drm_gem_object_unreference_unlocked(obj); 587 588 return 0; 589 590 } 591 592