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 "drmP.h"
  29 #include "ast_drv.h"
  30
  31
  32 #include "drm_fb_helper.h"
  33 #include "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
  70         if (dev->pdev->device == PCI_CHIP_AST1180) {
  71                 ast->chip = AST1100;
  72                 DRM_INFO("AST 1180 detected\n");
  73         } else {
  74                 if (dev->pdev->revision >= 0x20) {
  75                         ast->chip = AST2300;
  76                         DRM_INFO("AST 2300 detected\n");
  77                 } else if (dev->pdev->revision >= 0x10) {
  78                         uint32_t data;
  79                         ast_write32(ast, 0xf004, 0x1e6e0000);
  80                         ast_write32(ast, 0xf000, 0x1);
  81
  82                         data = ast_read32(ast, 0x1207c);
  83                         switch (data & 0x0300) {
  84                         case 0x0200:
  85                                 ast->chip = AST1100;
  86                                 DRM_INFO("AST 1100 detected\n");
  87                                 break;
  88                         case 0x0100:
  89                                 ast->chip = AST2200;
  90                                 DRM_INFO("AST 2200 detected\n");
  91                                 break;
  92                         case 0x0000:
  93                                 ast->chip = AST2150;
  94                                 DRM_INFO("AST 2150 detected\n");
  95                                 break;
  96                         default:
  97                                 ast->chip = AST2100;
  98                                 DRM_INFO("AST 2100 detected\n");
  99                                 break;
 100                         }
 101                         ast->vga2_clone = false;
 102                 } else {
 103                         ast->chip = 2000;
 104                         DRM_INFO("AST 2000 detected\n");
 105                 }
 106         }
 107         return 0;
 108 }
 109
 110 static int ast_get_dram_info(struct drm_device *dev)
 111 {
 112         struct ast_private *ast = dev->dev_private;
 113         uint32_t data, data2;
 114         uint32_t denum, num, div, ref_pll;
 115
 116         ast_write32(ast, 0xf004, 0x1e6e0000);
 117         ast_write32(ast, 0xf000, 0x1);
 118
 119
 120         ast_write32(ast, 0x10000, 0xfc600309);
 121
 122         do {
 123                 ;
 124         } while (ast_read32(ast, 0x10000) != 0x01);
 125         data = ast_read32(ast, 0x10004);
 126
 127         if (data & 0x400)
 128                 ast->dram_bus_width = 16;
 129         else
 130                 ast->dram_bus_width = 32;
 131
 132         if (ast->chip == AST2300) {
 133                 switch (data & 0x03) {
 134                 case 0:
 135                         ast->dram_type = AST_DRAM_512Mx16;
 136                         break;
 137                 default:
 138                 case 1:
 139                         ast->dram_type = AST_DRAM_1Gx16;
 140                         break;
 141                 case 2:
 142                         ast->dram_type = AST_DRAM_2Gx16;
 143                         break;
 144                 case 3:
 145                         ast->dram_type = AST_DRAM_4Gx16;
 146                         break;
 147                 }
 148         } else {
 149                 switch (data & 0x0c) {
 150                 case 0:
 151                 case 4:
 152                         ast->dram_type = AST_DRAM_512Mx16;
 153                         break;
 154                 case 8:
 155                         if (data & 0x40)
 156                                 ast->dram_type = AST_DRAM_1Gx16;
 157                         else
 158                                 ast->dram_type = AST_DRAM_512Mx32;
 159                         break;
 160                 case 0xc:
 161                         ast->dram_type = AST_DRAM_1Gx32;
 162                         break;
 163                 }
 164         }
 165
 166         data = ast_read32(ast, 0x10120);
 167         data2 = ast_read32(ast, 0x10170);
 168         if (data2 & 0x2000)
 169                 ref_pll = 14318;
 170         else
 171                 ref_pll = 12000;
 172
 173         denum = data & 0x1f;
 174         num = (data & 0x3fe0) >> 5;
 175         data = (data & 0xc000) >> 14;
 176         switch (data) {
 177         case 3:
 178                 div = 0x4;
 179                 break;
 180         case 2:
 181         case 1:
 182                 div = 0x2;
 183                 break;
 184         default:
 185                 div = 0x1;
 186                 break;
 187         }
 188         ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
 189         return 0;
 190 }
 191
 192 uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
 193 {
 194         struct ast_private *ast = dev->dev_private;
 195         uint32_t dclk, jreg;
 196         uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;
 197
 198         dram_bus_width = ast->dram_bus_width;
 199         mclk = ast->mclk;
 200
 201         if (ast->chip == AST2100 ||
 202             ast->chip == AST1100 ||
 203             ast->chip == AST2200 ||
 204             ast->chip == AST2150 ||
 205             ast->dram_bus_width == 16)
 206                 dram_efficency = 600;
 207         else if (ast->chip == AST2300)
 208                 dram_efficency = 400;
 209
 210         dram_bandwidth = mclk * dram_bus_width * 2 / 8;
 211         actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;
 212
 213         if (ast->chip == AST1180)
 214                 dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
 215         else {
 216                 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
 217                 if ((jreg & 0x08) && (ast->chip == AST2000))
 218                         dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
 219                 else if ((jreg & 0x08) && (bpp == 8))
 220                         dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
 221                 else
 222                         dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
 223         }
 224
 225         if (ast->chip == AST2100 ||
 226             ast->chip == AST2200 ||
 227             ast->chip == AST2300 ||
 228             ast->chip == AST1180) {
 229                 if (dclk > 200)
 230                         dclk = 200;
 231         } else {
 232                 if (dclk > 165)
 233                         dclk = 165;
 234         }
 235
 236         return dclk;
 237 }
 238
 239 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
 240 {
 241         struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
 242         if (ast_fb->obj)
 243                 drm_gem_object_unreference_unlocked(ast_fb->obj);
 244
 245         drm_framebuffer_cleanup(fb);
 246         kfree(fb);
 247 }
 248
 249 static int ast_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 250                                               struct drm_file *file,
 251                                               unsigned int *handle)
 252 {
 253         return -EINVAL;
 254 }
 255
 256 static const struct drm_framebuffer_funcs ast_fb_funcs = {
 257         .destroy = ast_user_framebuffer_destroy,
 258         .create_handle = ast_user_framebuffer_create_handle,
 259 };
 260
 261
 262 int ast_framebuffer_init(struct drm_device *dev,
 263                          struct ast_framebuffer *ast_fb,
 264                          struct drm_mode_fb_cmd2 *mode_cmd,
 265                          struct drm_gem_object *obj)
 266 {
 267         int ret;
 268
 269         ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
 270         if (ret) {
 271                 DRM_ERROR("framebuffer init failed %d\n", ret);
 272                 return ret;
 273         }
 274         drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
 275         ast_fb->obj = obj;
 276         return 0;
 277 }
 278
 279 static struct drm_framebuffer *
 280 ast_user_framebuffer_create(struct drm_device *dev,
 281                struct drm_file *filp,
 282                struct drm_mode_fb_cmd2 *mode_cmd)
 283 {
 284         struct drm_gem_object *obj;
 285         struct ast_framebuffer *ast_fb;
 286         int ret;
 287
 288         obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
 289         if (obj == NULL)
 290                 return ERR_PTR(-ENOENT);
 291
 292         ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
 293         if (!ast_fb) {
 294                 drm_gem_object_unreference_unlocked(obj);
 295                 return ERR_PTR(-ENOMEM);
 296         }
 297
 298         ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
 299         if (ret) {
 300                 drm_gem_object_unreference_unlocked(obj);
 301                 kfree(ast_fb);
 302                 return ERR_PTR(ret);
 303         }
 304         return &ast_fb->base;
 305 }
 306
 307 static const struct drm_mode_config_funcs ast_mode_funcs = {
 308         .fb_create = ast_user_framebuffer_create,
 309 };
 310
 311 static u32 ast_get_vram_info(struct drm_device *dev)
 312 {
 313         struct ast_private *ast = dev->dev_private;
 314         u8 jreg;
 315
 316         ast_open_key(ast);
 317
 318         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
 319         switch (jreg & 3) {
 320         case 0: return AST_VIDMEM_SIZE_8M;
 321         case 1: return AST_VIDMEM_SIZE_16M;
 322         case 2: return AST_VIDMEM_SIZE_32M;
 323         case 3: return AST_VIDMEM_SIZE_64M;
 324         }
 325         return AST_VIDMEM_DEFAULT_SIZE;
 326 }
 327
 328 int ast_driver_load(struct drm_device *dev, unsigned long flags)
 329 {
 330         struct ast_private *ast;
 331         int ret = 0;
 332
 333         ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
 334         if (!ast)
 335                 return -ENOMEM;
 336
 337         dev->dev_private = ast;
 338         ast->dev = dev;
 339
 340         ast->regs = pci_iomap(dev->pdev, 1, 0);
 341         if (!ast->regs) {
 342                 ret = -EIO;
 343                 goto out_free;
 344         }
 345         ast->ioregs = pci_iomap(dev->pdev, 2, 0);
 346         if (!ast->ioregs) {
 347                 ret = -EIO;
 348                 goto out_free;
 349         }
 350
 351         ast_detect_chip(dev);
 352
 353         if (ast->chip != AST1180) {
 354                 ast_get_dram_info(dev);
 355                 ast->vram_size = ast_get_vram_info(dev);
 356                 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
 357         }
 358
 359         ret = ast_mm_init(ast);
 360         if (ret)
 361                 goto out_free;
 362
 363         drm_mode_config_init(dev);
 364
 365         dev->mode_config.funcs = (void *)&ast_mode_funcs;
 366         dev->mode_config.min_width = 0;
 367         dev->mode_config.min_height = 0;
 368         dev->mode_config.preferred_depth = 24;
 369         dev->mode_config.prefer_shadow = 1;
 370
 371         if (ast->chip == AST2100 ||
 372             ast->chip == AST2200 ||
 373             ast->chip == AST2300 ||
 374             ast->chip == AST1180) {
 375                 dev->mode_config.max_width = 1920;
 376                 dev->mode_config.max_height = 2048;
 377         } else {
 378                 dev->mode_config.max_width = 1600;
 379                 dev->mode_config.max_height = 1200;
 380         }
 381
 382         ret = ast_mode_init(dev);
 383         if (ret)
 384                 goto out_free;
 385
 386         ret = ast_fbdev_init(dev);
 387         if (ret)
 388                 goto out_free;
 389
 390         return 0;
 391 out_free:
 392         kfree(ast);
 393         dev->dev_private = NULL;
 394         return ret;
 395 }
 396
 397 int ast_driver_unload(struct drm_device *dev)
 398 {
 399         struct ast_private *ast = dev->dev_private;
 400
 401         ast_mode_fini(dev);
 402         ast_fbdev_fini(dev);
 403         drm_mode_config_cleanup(dev);
 404
 405         ast_mm_fini(ast);
 406         pci_iounmap(dev->pdev, ast->ioregs);
 407         pci_iounmap(dev->pdev, ast->regs);
 408         kfree(ast);
 409         return 0;
 410 }
 411
 412 int ast_gem_create(struct drm_device *dev,
 413                    u32 size, bool iskernel,
 414                    struct drm_gem_object **obj)
 415 {
 416         struct ast_bo *astbo;
 417         int ret;
 418
 419         *obj = NULL;
 420
 421         size = roundup(size, PAGE_SIZE);
 422         if (size == 0)
 423                 return -EINVAL;
 424
 425         ret = ast_bo_create(dev, size, 0, 0, &astbo);
 426         if (ret) {
 427                 if (ret != -ERESTARTSYS)
 428                         DRM_ERROR("failed to allocate GEM object\n");
 429                 return ret;
 430         }
 431         *obj = &astbo->gem;
 432         return 0;
 433 }
 434
 435 int ast_dumb_create(struct drm_file *file,
 436                     struct drm_device *dev,
 437                     struct drm_mode_create_dumb *args)
 438 {
 439         int ret;
 440         struct drm_gem_object *gobj;
 441         u32 handle;
 442
 443         args->pitch = args->width * ((args->bpp + 7) / 8);
 444         args->size = args->pitch * args->height;
 445
 446         ret = ast_gem_create(dev, args->size, false,
 447                              &gobj);
 448         if (ret)
 449                 return ret;
 450
 451         ret = drm_gem_handle_create(file, gobj, &handle);
 452         drm_gem_object_unreference_unlocked(gobj);
 453         if (ret)
 454                 return ret;
 455
 456         args->handle = handle;
 457         return 0;
 458 }
 459
 460 int ast_dumb_destroy(struct drm_file *file,
 461                      struct drm_device *dev,
 462                      uint32_t handle)
 463 {
 464         return drm_gem_handle_delete(file, handle);
 465 }
 466
 467 int ast_gem_init_object(struct drm_gem_object *obj)
 468 {
 469         BUG();
 470         return 0;
 471 }
 472
 473 void ast_bo_unref(struct ast_bo **bo)
 474 {
 475         struct ttm_buffer_object *tbo;
 476
 477         if ((*bo) == NULL)
 478                 return;
 479
 480         tbo = &((*bo)->bo);
 481         ttm_bo_unref(&tbo);
 482         if (tbo == NULL)
 483                 *bo = NULL;
 484
 485 }
 486 void ast_gem_free_object(struct drm_gem_object *obj)
 487 {
 488         struct ast_bo *ast_bo = gem_to_ast_bo(obj);
 489
 490         if (!ast_bo)
 491                 return;
 492         ast_bo_unref(&ast_bo);
 493 }
 494
 495
 496 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
 497 {
 498         return bo->bo.addr_space_offset;
 499 }
 500 int
 501 ast_dumb_mmap_offset(struct drm_file *file,
 502                      struct drm_device *dev,
 503                      uint32_t handle,
 504                      uint64_t *offset)
 505 {
 506         struct drm_gem_object *obj;
 507         int ret;
 508         struct ast_bo *bo;
 509
 510         mutex_lock(&dev->struct_mutex);
 511         obj = drm_gem_object_lookup(dev, file, handle);
 512         if (obj == NULL) {
 513                 ret = -ENOENT;
 514                 goto out_unlock;
 515         }
 516
 517         bo = gem_to_ast_bo(obj);
 518         *offset = ast_bo_mmap_offset(bo);
 519
 520         drm_gem_object_unreference(obj);
 521         ret = 0;
 522 out_unlock:
 523         mutex_unlock(&dev->struct_mutex);
 524         return ret;
 525
 526 }
 527