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 ; 227 } while (ast_read32(ast, 0x10000) != 0x01); 228 data = ast_read32(ast, 0x10004); 229 230 if (data & 0x40) 231 ast->dram_bus_width = 16; 232 else 233 ast->dram_bus_width = 32; 234 235 if (ast->chip == AST2300 || ast->chip == AST2400) { 236 switch (data & 0x03) { 237 case 0: 238 ast->dram_type = AST_DRAM_512Mx16; 239 break; 240 default: 241 case 1: 242 ast->dram_type = AST_DRAM_1Gx16; 243 break; 244 case 2: 245 ast->dram_type = AST_DRAM_2Gx16; 246 break; 247 case 3: 248 ast->dram_type = AST_DRAM_4Gx16; 249 break; 250 } 251 } else { 252 switch (data & 0x0c) { 253 case 0: 254 case 4: 255 ast->dram_type = AST_DRAM_512Mx16; 256 break; 257 case 8: 258 if (data & 0x40) 259 ast->dram_type = AST_DRAM_1Gx16; 260 else 261 ast->dram_type = AST_DRAM_512Mx32; 262 break; 263 case 0xc: 264 ast->dram_type = AST_DRAM_1Gx32; 265 break; 266 } 267 } 268 269 data = ast_read32(ast, 0x10120); 270 data2 = ast_read32(ast, 0x10170); 271 if (data2 & 0x2000) 272 ref_pll = 14318; 273 else 274 ref_pll = 12000; 275 276 denum = data & 0x1f; 277 num = (data & 0x3fe0) >> 5; 278 data = (data & 0xc000) >> 14; 279 switch (data) { 280 case 3: 281 div = 0x4; 282 break; 283 case 2: 284 case 1: 285 div = 0x2; 286 break; 287 default: 288 div = 0x1; 289 break; 290 } 291 ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000); 292 return 0; 293 } 294 295 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb) 296 { 297 struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb); 298 299 drm_gem_object_unreference_unlocked(ast_fb->obj); 300 drm_framebuffer_cleanup(fb); 301 kfree(fb); 302 } 303 304 static const struct drm_framebuffer_funcs ast_fb_funcs = { 305 .destroy = ast_user_framebuffer_destroy, 306 }; 307 308 309 int ast_framebuffer_init(struct drm_device *dev, 310 struct ast_framebuffer *ast_fb, 311 const struct drm_mode_fb_cmd2 *mode_cmd, 312 struct drm_gem_object *obj) 313 { 314 int ret; 315 316 drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd); 317 ast_fb->obj = obj; 318 ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs); 319 if (ret) { 320 DRM_ERROR("framebuffer init failed %d\n", ret); 321 return ret; 322 } 323 return 0; 324 } 325 326 static struct drm_framebuffer * 327 ast_user_framebuffer_create(struct drm_device *dev, 328 struct drm_file *filp, 329 const struct drm_mode_fb_cmd2 *mode_cmd) 330 { 331 struct drm_gem_object *obj; 332 struct ast_framebuffer *ast_fb; 333 int ret; 334 335 obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 336 if (obj == NULL) 337 return ERR_PTR(-ENOENT); 338 339 ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL); 340 if (!ast_fb) { 341 drm_gem_object_unreference_unlocked(obj); 342 return ERR_PTR(-ENOMEM); 343 } 344 345 ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj); 346 if (ret) { 347 drm_gem_object_unreference_unlocked(obj); 348 kfree(ast_fb); 349 return ERR_PTR(ret); 350 } 351 return &ast_fb->base; 352 } 353 354 static const struct drm_mode_config_funcs ast_mode_funcs = { 355 .fb_create = ast_user_framebuffer_create, 356 }; 357 358 static u32 ast_get_vram_info(struct drm_device *dev) 359 { 360 struct ast_private *ast = dev->dev_private; 361 u8 jreg; 362 u32 vram_size; 363 ast_open_key(ast); 364 365 vram_size = AST_VIDMEM_DEFAULT_SIZE; 366 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); 367 switch (jreg & 3) { 368 case 0: vram_size = AST_VIDMEM_SIZE_8M; break; 369 case 1: vram_size = AST_VIDMEM_SIZE_16M; break; 370 case 2: vram_size = AST_VIDMEM_SIZE_32M; break; 371 case 3: vram_size = AST_VIDMEM_SIZE_64M; break; 372 } 373 374 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff); 375 switch (jreg & 0x03) { 376 case 1: 377 vram_size -= 0x100000; 378 break; 379 case 2: 380 vram_size -= 0x200000; 381 break; 382 case 3: 383 vram_size -= 0x400000; 384 break; 385 } 386 387 return vram_size; 388 } 389 390 int ast_driver_load(struct drm_device *dev, unsigned long flags) 391 { 392 struct ast_private *ast; 393 bool need_post; 394 int ret = 0; 395 396 ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL); 397 if (!ast) 398 return -ENOMEM; 399 400 dev->dev_private = ast; 401 ast->dev = dev; 402 403 ast->regs = pci_iomap(dev->pdev, 1, 0); 404 if (!ast->regs) { 405 ret = -EIO; 406 goto out_free; 407 } 408 409 /* 410 * If we don't have IO space at all, use MMIO now and 411 * assume the chip has MMIO enabled by default (rev 0x20 412 * and higher). 413 */ 414 if (!(pci_resource_flags(dev->pdev, 2) & IORESOURCE_IO)) { 415 DRM_INFO("platform has no IO space, trying MMIO\n"); 416 ast->ioregs = ast->regs + AST_IO_MM_OFFSET; 417 } 418 419 /* "map" IO regs if the above hasn't done so already */ 420 if (!ast->ioregs) { 421 ast->ioregs = pci_iomap(dev->pdev, 2, 0); 422 if (!ast->ioregs) { 423 ret = -EIO; 424 goto out_free; 425 } 426 } 427 428 ast_detect_chip(dev, &need_post); 429 430 if (ast->chip != AST1180) { 431 ast_get_dram_info(dev); 432 ast->vram_size = ast_get_vram_info(dev); 433 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size); 434 } 435 436 if (need_post) 437 ast_post_gpu(dev); 438 439 ret = ast_mm_init(ast); 440 if (ret) 441 goto out_free; 442 443 drm_mode_config_init(dev); 444 445 dev->mode_config.funcs = (void *)&ast_mode_funcs; 446 dev->mode_config.min_width = 0; 447 dev->mode_config.min_height = 0; 448 dev->mode_config.preferred_depth = 24; 449 dev->mode_config.prefer_shadow = 1; 450 dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0); 451 452 if (ast->chip == AST2100 || 453 ast->chip == AST2200 || 454 ast->chip == AST2300 || 455 ast->chip == AST2400 || 456 ast->chip == AST1180) { 457 dev->mode_config.max_width = 1920; 458 dev->mode_config.max_height = 2048; 459 } else { 460 dev->mode_config.max_width = 1600; 461 dev->mode_config.max_height = 1200; 462 } 463 464 ret = ast_mode_init(dev); 465 if (ret) 466 goto out_free; 467 468 ret = ast_fbdev_init(dev); 469 if (ret) 470 goto out_free; 471 472 return 0; 473 out_free: 474 kfree(ast); 475 dev->dev_private = NULL; 476 return ret; 477 } 478 479 int ast_driver_unload(struct drm_device *dev) 480 { 481 struct ast_private *ast = dev->dev_private; 482 483 kfree(ast->dp501_fw_addr); 484 ast_mode_fini(dev); 485 ast_fbdev_fini(dev); 486 drm_mode_config_cleanup(dev); 487 488 ast_mm_fini(ast); 489 pci_iounmap(dev->pdev, ast->ioregs); 490 pci_iounmap(dev->pdev, ast->regs); 491 kfree(ast); 492 return 0; 493 } 494 495 int ast_gem_create(struct drm_device *dev, 496 u32 size, bool iskernel, 497 struct drm_gem_object **obj) 498 { 499 struct ast_bo *astbo; 500 int ret; 501 502 *obj = NULL; 503 504 size = roundup(size, PAGE_SIZE); 505 if (size == 0) 506 return -EINVAL; 507 508 ret = ast_bo_create(dev, size, 0, 0, &astbo); 509 if (ret) { 510 if (ret != -ERESTARTSYS) 511 DRM_ERROR("failed to allocate GEM object\n"); 512 return ret; 513 } 514 *obj = &astbo->gem; 515 return 0; 516 } 517 518 int ast_dumb_create(struct drm_file *file, 519 struct drm_device *dev, 520 struct drm_mode_create_dumb *args) 521 { 522 int ret; 523 struct drm_gem_object *gobj; 524 u32 handle; 525 526 args->pitch = args->width * ((args->bpp + 7) / 8); 527 args->size = args->pitch * args->height; 528 529 ret = ast_gem_create(dev, args->size, false, 530 &gobj); 531 if (ret) 532 return ret; 533 534 ret = drm_gem_handle_create(file, gobj, &handle); 535 drm_gem_object_unreference_unlocked(gobj); 536 if (ret) 537 return ret; 538 539 args->handle = handle; 540 return 0; 541 } 542 543 static void ast_bo_unref(struct ast_bo **bo) 544 { 545 struct ttm_buffer_object *tbo; 546 547 if ((*bo) == NULL) 548 return; 549 550 tbo = &((*bo)->bo); 551 ttm_bo_unref(&tbo); 552 *bo = NULL; 553 } 554 555 void ast_gem_free_object(struct drm_gem_object *obj) 556 { 557 struct ast_bo *ast_bo = gem_to_ast_bo(obj); 558 559 ast_bo_unref(&ast_bo); 560 } 561 562 563 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo) 564 { 565 return drm_vma_node_offset_addr(&bo->bo.vma_node); 566 } 567 int 568 ast_dumb_mmap_offset(struct drm_file *file, 569 struct drm_device *dev, 570 uint32_t handle, 571 uint64_t *offset) 572 { 573 struct drm_gem_object *obj; 574 struct ast_bo *bo; 575 576 obj = drm_gem_object_lookup(file, handle); 577 if (obj == NULL) 578 return -ENOENT; 579 580 bo = gem_to_ast_bo(obj); 581 *offset = ast_bo_mmap_offset(bo); 582 583 drm_gem_object_unreference_unlocked(obj); 584 585 return 0; 586 587 } 588 589