drivers/gpu/drm/ast/ast_main.c

   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)
  67 {
  68         struct ast_private *ast = dev->dev_private;
  69         uint32_t data, jreg;
  70
  71         if (dev->pdev->device == PCI_CHIP_AST1180) {
  72                 ast->chip = AST1100;
  73                 DRM_INFO("AST 1180 detected\n");
  74         } else {
  75                 if (dev->pdev->revision >= 0x30) {
  76                         ast->chip = AST2400;
  77                         DRM_INFO("AST 2400 detected\n");
  78                 } else if (dev->pdev->revision >= 0x20) {
  79                         ast->chip = AST2300;
  80                         DRM_INFO("AST 2300 detected\n");
  81                 } else if (dev->pdev->revision >= 0x10) {
  82                         uint32_t data;
  83                         ast_write32(ast, 0xf004, 0x1e6e0000);
  84                         ast_write32(ast, 0xf000, 0x1);
  85
  86                         data = ast_read32(ast, 0x1207c);
  87                         switch (data & 0x0300) {
  88                         case 0x0200:
  89                                 ast->chip = AST1100;
  90                                 DRM_INFO("AST 1100 detected\n");
  91                                 break;
  92                         case 0x0100:
  93                                 ast->chip = AST2200;
  94                                 DRM_INFO("AST 2200 detected\n");
  95                                 break;
  96                         case 0x0000:
  97                                 ast->chip = AST2150;
  98                                 DRM_INFO("AST 2150 detected\n");
  99                                 break;
 100                         default:
 101                                 ast->chip = AST2100;
 102                                 DRM_INFO("AST 2100 detected\n");
 103                                 break;
 104                         }
 105                         ast->vga2_clone = false;
 106                 } else {
 107                         ast->chip = 2000;
 108                         DRM_INFO("AST 2000 detected\n");
 109                 }
 110         }
 111
 112         switch (ast->chip) {
 113         case AST1180:
 114                 ast->support_wide_screen = true;
 115                 break;
 116         case AST2000:
 117                 ast->support_wide_screen = false;
 118                 break;
 119         default:
 120                 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
 121                 if (!(jreg & 0x80))
 122                         ast->support_wide_screen = true;
 123                 else if (jreg & 0x01)
 124                         ast->support_wide_screen = true;
 125                 else {
 126                         ast->support_wide_screen = false;
 127                         ast_write32(ast, 0xf004, 0x1e6e0000);
 128                         ast_write32(ast, 0xf000, 0x1);
 129                         data = ast_read32(ast, 0x1207c);
 130                         data &= 0x300;
 131                         if (ast->chip == AST2300 && data == 0x0) /* ast1300 */
 132                                 ast->support_wide_screen = true;
 133                         if (ast->chip == AST2400 && data == 0x100) /* ast1400 */
 134                                 ast->support_wide_screen = true;
 135                 }
 136                 break;
 137         }
 138
 139         ast->tx_chip_type = AST_TX_NONE;
 140         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff);
 141         if (jreg & 0x80)
 142                 ast->tx_chip_type = AST_TX_SIL164;
 143         if ((ast->chip == AST2300) || (ast->chip == AST2400)) {
 144                 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
 145                 switch (jreg) {
 146                 case 0x04:
 147                         ast->tx_chip_type = AST_TX_SIL164;
 148                         break;
 149                 case 0x08:
 150                         ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL);
 151                         if (ast->dp501_fw_addr) {
 152                                 /* backup firmware */
 153                                 if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
 154                                         kfree(ast->dp501_fw_addr);
 155                                         ast->dp501_fw_addr = NULL;
 156                                 }
 157                         }
 158                         /* fallthrough */
 159                 case 0x0c:
 160                         ast->tx_chip_type = AST_TX_DP501;
 161                 }
 162         }
 163
 164         return 0;
 165 }
 166
 167 static int ast_get_dram_info(struct drm_device *dev)
 168 {
 169         struct ast_private *ast = dev->dev_private;
 170         uint32_t data, data2;
 171         uint32_t denum, num, div, ref_pll;
 172
 173         ast_write32(ast, 0xf004, 0x1e6e0000);
 174         ast_write32(ast, 0xf000, 0x1);
 175
 176
 177         ast_write32(ast, 0x10000, 0xfc600309);
 178
 179         do {
 180                 ;
 181         } while (ast_read32(ast, 0x10000) != 0x01);
 182         data = ast_read32(ast, 0x10004);
 183
 184         if (data & 0x400)
 185                 ast->dram_bus_width = 16;
 186         else
 187                 ast->dram_bus_width = 32;
 188
 189         if (ast->chip == AST2300 || ast->chip == AST2400) {
 190                 switch (data & 0x03) {
 191                 case 0:
 192                         ast->dram_type = AST_DRAM_512Mx16;
 193                         break;
 194                 default:
 195                 case 1:
 196                         ast->dram_type = AST_DRAM_1Gx16;
 197                         break;
 198                 case 2:
 199                         ast->dram_type = AST_DRAM_2Gx16;
 200                         break;
 201                 case 3:
 202                         ast->dram_type = AST_DRAM_4Gx16;
 203                         break;
 204                 }
 205         } else {
 206                 switch (data & 0x0c) {
 207                 case 0:
 208                 case 4:
 209                         ast->dram_type = AST_DRAM_512Mx16;
 210                         break;
 211                 case 8:
 212                         if (data & 0x40)
 213                                 ast->dram_type = AST_DRAM_1Gx16;
 214                         else
 215                                 ast->dram_type = AST_DRAM_512Mx32;
 216                         break;
 217                 case 0xc:
 218                         ast->dram_type = AST_DRAM_1Gx32;
 219                         break;
 220                 }
 221         }
 222
 223         data = ast_read32(ast, 0x10120);
 224         data2 = ast_read32(ast, 0x10170);
 225         if (data2 & 0x2000)
 226                 ref_pll = 14318;
 227         else
 228                 ref_pll = 12000;
 229
 230         denum = data & 0x1f;
 231         num = (data & 0x3fe0) >> 5;
 232         data = (data & 0xc000) >> 14;
 233         switch (data) {
 234         case 3:
 235                 div = 0x4;
 236                 break;
 237         case 2:
 238         case 1:
 239                 div = 0x2;
 240                 break;
 241         default:
 242                 div = 0x1;
 243                 break;
 244         }
 245         ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
 246         return 0;
 247 }
 248
 249 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
 250 {
 251         struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
 252         if (ast_fb->obj)
 253                 drm_gem_object_unreference_unlocked(ast_fb->obj);
 254
 255         drm_framebuffer_cleanup(fb);
 256         kfree(fb);
 257 }
 258
 259 static const struct drm_framebuffer_funcs ast_fb_funcs = {
 260         .destroy = ast_user_framebuffer_destroy,
 261 };
 262
 263
 264 int ast_framebuffer_init(struct drm_device *dev,
 265                          struct ast_framebuffer *ast_fb,
 266                          struct drm_mode_fb_cmd2 *mode_cmd,
 267                          struct drm_gem_object *obj)
 268 {
 269         int ret;
 270
 271         drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
 272         ast_fb->obj = obj;
 273         ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
 274         if (ret) {
 275                 DRM_ERROR("framebuffer init failed %d\n", ret);
 276                 return ret;
 277         }
 278         return 0;
 279 }
 280
 281 static struct drm_framebuffer *
 282 ast_user_framebuffer_create(struct drm_device *dev,
 283                struct drm_file *filp,
 284                struct drm_mode_fb_cmd2 *mode_cmd)
 285 {
 286         struct drm_gem_object *obj;
 287         struct ast_framebuffer *ast_fb;
 288         int ret;
 289
 290         obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
 291         if (obj == NULL)
 292                 return ERR_PTR(-ENOENT);
 293
 294         ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
 295         if (!ast_fb) {
 296                 drm_gem_object_unreference_unlocked(obj);
 297                 return ERR_PTR(-ENOMEM);
 298         }
 299
 300         ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
 301         if (ret) {
 302                 drm_gem_object_unreference_unlocked(obj);
 303                 kfree(ast_fb);
 304                 return ERR_PTR(ret);
 305         }
 306         return &ast_fb->base;
 307 }
 308
 309 static const struct drm_mode_config_funcs ast_mode_funcs = {
 310         .fb_create = ast_user_framebuffer_create,
 311 };
 312
 313 static u32 ast_get_vram_info(struct drm_device *dev)
 314 {
 315         struct ast_private *ast = dev->dev_private;
 316         u8 jreg;
 317         u32 vram_size;
 318         ast_open_key(ast);
 319
 320         vram_size = AST_VIDMEM_DEFAULT_SIZE;
 321         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
 322         switch (jreg & 3) {
 323         case 0: vram_size = AST_VIDMEM_SIZE_8M; break;
 324         case 1: vram_size = AST_VIDMEM_SIZE_16M; break;
 325         case 2: vram_size = AST_VIDMEM_SIZE_32M; break;
 326         case 3: vram_size = AST_VIDMEM_SIZE_64M; break;
 327         }
 328
 329         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff);
 330         switch (jreg & 0x03) {
 331         case 1:
 332                 vram_size -= 0x100000;
 333                 break;
 334         case 2:
 335                 vram_size -= 0x200000;
 336                 break;
 337         case 3:
 338                 vram_size -= 0x400000;
 339                 break;
 340         }
 341
 342         return vram_size;
 343 }
 344
 345 int ast_driver_load(struct drm_device *dev, unsigned long flags)
 346 {
 347         struct ast_private *ast;
 348         int ret = 0;
 349
 350         ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
 351         if (!ast)
 352                 return -ENOMEM;
 353
 354         dev->dev_private = ast;
 355         ast->dev = dev;
 356
 357         ast->regs = pci_iomap(dev->pdev, 1, 0);
 358         if (!ast->regs) {
 359                 ret = -EIO;
 360                 goto out_free;
 361         }
 362         ast->ioregs = pci_iomap(dev->pdev, 2, 0);
 363         if (!ast->ioregs) {
 364                 ret = -EIO;
 365                 goto out_free;
 366         }
 367
 368         ast_detect_chip(dev);
 369
 370         if (ast->chip != AST1180) {
 371                 ast_get_dram_info(dev);
 372                 ast->vram_size = ast_get_vram_info(dev);
 373                 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
 374         }
 375
 376         ret = ast_mm_init(ast);
 377         if (ret)
 378                 goto out_free;
 379
 380         drm_mode_config_init(dev);
 381
 382         dev->mode_config.funcs = (void *)&ast_mode_funcs;
 383         dev->mode_config.min_width = 0;
 384         dev->mode_config.min_height = 0;
 385         dev->mode_config.preferred_depth = 24;
 386         dev->mode_config.prefer_shadow = 1;
 387
 388         if (ast->chip == AST2100 ||
 389             ast->chip == AST2200 ||
 390             ast->chip == AST2300 ||
 391             ast->chip == AST2400 ||
 392             ast->chip == AST1180) {
 393                 dev->mode_config.max_width = 1920;
 394                 dev->mode_config.max_height = 2048;
 395         } else {
 396                 dev->mode_config.max_width = 1600;
 397                 dev->mode_config.max_height = 1200;
 398         }
 399
 400         ret = ast_mode_init(dev);
 401         if (ret)
 402                 goto out_free;
 403
 404         ret = ast_fbdev_init(dev);
 405         if (ret)
 406                 goto out_free;
 407
 408         return 0;
 409 out_free:
 410         kfree(ast);
 411         dev->dev_private = NULL;
 412         return ret;
 413 }
 414
 415 int ast_driver_unload(struct drm_device *dev)
 416 {
 417         struct ast_private *ast = dev->dev_private;
 418
 419         kfree(ast->dp501_fw_addr);
 420         ast_mode_fini(dev);
 421         ast_fbdev_fini(dev);
 422         drm_mode_config_cleanup(dev);
 423
 424         ast_mm_fini(ast);
 425         pci_iounmap(dev->pdev, ast->ioregs);
 426         pci_iounmap(dev->pdev, ast->regs);
 427         kfree(ast);
 428         return 0;
 429 }
 430
 431 int ast_gem_create(struct drm_device *dev,
 432                    u32 size, bool iskernel,
 433                    struct drm_gem_object **obj)
 434 {
 435         struct ast_bo *astbo;
 436         int ret;
 437
 438         *obj = NULL;
 439
 440         size = roundup(size, PAGE_SIZE);
 441         if (size == 0)
 442                 return -EINVAL;
 443
 444         ret = ast_bo_create(dev, size, 0, 0, &astbo);
 445         if (ret) {
 446                 if (ret != -ERESTARTSYS)
 447                         DRM_ERROR("failed to allocate GEM object\n");
 448                 return ret;
 449         }
 450         *obj = &astbo->gem;
 451         return 0;
 452 }
 453
 454 int ast_dumb_create(struct drm_file *file,
 455                     struct drm_device *dev,
 456                     struct drm_mode_create_dumb *args)
 457 {
 458         int ret;
 459         struct drm_gem_object *gobj;
 460         u32 handle;
 461
 462         args->pitch = args->width * ((args->bpp + 7) / 8);
 463         args->size = args->pitch * args->height;
 464
 465         ret = ast_gem_create(dev, args->size, false,
 466                              &gobj);
 467         if (ret)
 468                 return ret;
 469
 470         ret = drm_gem_handle_create(file, gobj, &handle);
 471         drm_gem_object_unreference_unlocked(gobj);
 472         if (ret)
 473                 return ret;
 474
 475         args->handle = handle;
 476         return 0;
 477 }
 478
 479 static void ast_bo_unref(struct ast_bo **bo)
 480 {
 481         struct ttm_buffer_object *tbo;
 482
 483         if ((*bo) == NULL)
 484                 return;
 485
 486         tbo = &((*bo)->bo);
 487         ttm_bo_unref(&tbo);
 488         *bo = NULL;
 489 }
 490
 491 void ast_gem_free_object(struct drm_gem_object *obj)
 492 {
 493         struct ast_bo *ast_bo = gem_to_ast_bo(obj);
 494
 495         ast_bo_unref(&ast_bo);
 496 }
 497
 498
 499 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
 500 {
 501         return drm_vma_node_offset_addr(&bo->bo.vma_node);
 502 }
 503 int
 504 ast_dumb_mmap_offset(struct drm_file *file,
 505                      struct drm_device *dev,
 506                      uint32_t handle,
 507                      uint64_t *offset)
 508 {
 509         struct drm_gem_object *obj;
 510         int ret;
 511         struct ast_bo *bo;
 512
 513         mutex_lock(&dev->struct_mutex);
 514         obj = drm_gem_object_lookup(dev, file, handle);
 515         if (obj == NULL) {
 516                 ret = -ENOENT;
 517                 goto out_unlock;
 518         }
 519
 520         bo = gem_to_ast_bo(obj);
 521         *offset = ast_bo_mmap_offset(bo);
 522
 523         drm_gem_object_unreference(obj);
 524         ret = 0;
 525 out_unlock:
 526         mutex_unlock(&dev->struct_mutex);
 527         return ret;
 528
 529 }
 530