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         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         switch (ast->chip) {
 114         case AST1180:
 115                 ast->support_wide_screen = true;
 116                 break;
 117         case AST2000:
 118                 ast->support_wide_screen = false;
 119                 break;
 120         default:
 121                 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
 122                 if (!(jreg & 0x80))
 123                         ast->support_wide_screen = true;
 124                 else if (jreg & 0x01)
 125                         ast->support_wide_screen = true;
 126                 else {
 127                         ast->support_wide_screen = false;
 128                         ast_write32(ast, 0xf004, 0x1e6e0000);
 129                         ast_write32(ast, 0xf000, 0x1);
 130                         data = ast_read32(ast, 0x1207c);
 131                         data &= 0x300;
 132                         if (ast->chip == AST2300 && data == 0x0) /* ast1300 */
 133                                 ast->support_wide_screen = true;
 134                         if (ast->chip == AST2400 && data == 0x100) /* ast1400 */
 135                                 ast->support_wide_screen = true;
 136                 }
 137                 break;
 138         }
 139
 140         ast->tx_chip_type = AST_TX_NONE;
 141         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff);
 142         if (jreg & 0x80)
 143                 ast->tx_chip_type = AST_TX_SIL164;
 144         if ((ast->chip == AST2300) || (ast->chip == AST2400)) {
 145                 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
 146                 switch (jreg) {
 147                 case 0x04:
 148                         ast->tx_chip_type = AST_TX_SIL164;
 149                         break;
 150                 case 0x08:
 151                         ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL);
 152                         if (ast->dp501_fw_addr) {
 153                                 /* backup firmware */
 154                                 if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
 155                                         kfree(ast->dp501_fw_addr);
 156                                         ast->dp501_fw_addr = NULL;
 157                                 }
 158                         }
 159                         /* fallthrough */
 160                 case 0x0c:
 161                         ast->tx_chip_type = AST_TX_DP501;
 162                 }
 163         }
 164
 165         return 0;
 166 }
 167
 168 static int ast_get_dram_info(struct drm_device *dev)
 169 {
 170         struct ast_private *ast = dev->dev_private;
 171         uint32_t data, data2;
 172         uint32_t denum, num, div, ref_pll;
 173
 174         ast_write32(ast, 0xf004, 0x1e6e0000);
 175         ast_write32(ast, 0xf000, 0x1);
 176
 177
 178         ast_write32(ast, 0x10000, 0xfc600309);
 179
 180         do {
 181                 ;
 182         } while (ast_read32(ast, 0x10000) != 0x01);
 183         data = ast_read32(ast, 0x10004);
 184
 185         if (data & 0x400)
 186                 ast->dram_bus_width = 16;
 187         else
 188                 ast->dram_bus_width = 32;
 189
 190         if (ast->chip == AST2300 || ast->chip == AST2400) {
 191                 switch (data & 0x03) {
 192                 case 0:
 193                         ast->dram_type = AST_DRAM_512Mx16;
 194                         break;
 195                 default:
 196                 case 1:
 197                         ast->dram_type = AST_DRAM_1Gx16;
 198                         break;
 199                 case 2:
 200                         ast->dram_type = AST_DRAM_2Gx16;
 201                         break;
 202                 case 3:
 203                         ast->dram_type = AST_DRAM_4Gx16;
 204                         break;
 205                 }
 206         } else {
 207                 switch (data & 0x0c) {
 208                 case 0:
 209                 case 4:
 210                         ast->dram_type = AST_DRAM_512Mx16;
 211                         break;
 212                 case 8:
 213                         if (data & 0x40)
 214                                 ast->dram_type = AST_DRAM_1Gx16;
 215                         else
 216                                 ast->dram_type = AST_DRAM_512Mx32;
 217                         break;
 218                 case 0xc:
 219                         ast->dram_type = AST_DRAM_1Gx32;
 220                         break;
 221                 }
 222         }
 223
 224         data = ast_read32(ast, 0x10120);
 225         data2 = ast_read32(ast, 0x10170);
 226         if (data2 & 0x2000)
 227                 ref_pll = 14318;
 228         else
 229                 ref_pll = 12000;
 230
 231         denum = data & 0x1f;
 232         num = (data & 0x3fe0) >> 5;
 233         data = (data & 0xc000) >> 14;
 234         switch (data) {
 235         case 3:
 236                 div = 0x4;
 237                 break;
 238         case 2:
 239         case 1:
 240                 div = 0x2;
 241                 break;
 242         default:
 243                 div = 0x1;
 244                 break;
 245         }
 246         ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
 247         return 0;
 248 }
 249
 250 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
 251 {
 252         struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
 253         if (ast_fb->obj)
 254                 drm_gem_object_unreference_unlocked(ast_fb->obj);
 255
 256         drm_framebuffer_cleanup(fb);
 257         kfree(fb);
 258 }
 259
 260 static const struct drm_framebuffer_funcs ast_fb_funcs = {
 261         .destroy = ast_user_framebuffer_destroy,
 262 };
 263
 264
 265 int ast_framebuffer_init(struct drm_device *dev,
 266                          struct ast_framebuffer *ast_fb,
 267                          struct drm_mode_fb_cmd2 *mode_cmd,
 268                          struct drm_gem_object *obj)
 269 {
 270         int ret;
 271
 272         drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
 273         ast_fb->obj = obj;
 274         ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
 275         if (ret) {
 276                 DRM_ERROR("framebuffer init failed %d\n", ret);
 277                 return ret;
 278         }
 279         return 0;
 280 }
 281
 282 static struct drm_framebuffer *
 283 ast_user_framebuffer_create(struct drm_device *dev,
 284                struct drm_file *filp,
 285                struct drm_mode_fb_cmd2 *mode_cmd)
 286 {
 287         struct drm_gem_object *obj;
 288         struct ast_framebuffer *ast_fb;
 289         int ret;
 290
 291         obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
 292         if (obj == NULL)
 293                 return ERR_PTR(-ENOENT);
 294
 295         ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
 296         if (!ast_fb) {
 297                 drm_gem_object_unreference_unlocked(obj);
 298                 return ERR_PTR(-ENOMEM);
 299         }
 300
 301         ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
 302         if (ret) {
 303                 drm_gem_object_unreference_unlocked(obj);
 304                 kfree(ast_fb);
 305                 return ERR_PTR(ret);
 306         }
 307         return &ast_fb->base;
 308 }
 309
 310 static const struct drm_mode_config_funcs ast_mode_funcs = {
 311         .fb_create = ast_user_framebuffer_create,
 312 };
 313
 314 static u32 ast_get_vram_info(struct drm_device *dev)
 315 {
 316         struct ast_private *ast = dev->dev_private;
 317         u8 jreg;
 318         u32 vram_size;
 319         ast_open_key(ast);
 320
 321         vram_size = AST_VIDMEM_DEFAULT_SIZE;
 322         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
 323         switch (jreg & 3) {
 324         case 0: vram_size = AST_VIDMEM_SIZE_8M; break;
 325         case 1: vram_size = AST_VIDMEM_SIZE_16M; break;
 326         case 2: vram_size = AST_VIDMEM_SIZE_32M; break;
 327         case 3: vram_size = AST_VIDMEM_SIZE_64M; break;
 328         }
 329
 330         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff);
 331         switch (jreg & 0x03) {
 332         case 1:
 333                 vram_size -= 0x100000;
 334                 break;
 335         case 2:
 336                 vram_size -= 0x200000;
 337                 break;
 338         case 3:
 339                 vram_size -= 0x400000;
 340                 break;
 341         }
 342
 343         return vram_size;
 344 }
 345
 346 int ast_driver_load(struct drm_device *dev, unsigned long flags)
 347 {
 348         struct ast_private *ast;
 349         int ret = 0;
 350
 351         ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
 352         if (!ast)
 353                 return -ENOMEM;
 354
 355         dev->dev_private = ast;
 356         ast->dev = dev;
 357
 358         ast->regs = pci_iomap(dev->pdev, 1, 0);
 359         if (!ast->regs) {
 360                 ret = -EIO;
 361                 goto out_free;
 362         }
 363         ast->ioregs = pci_iomap(dev->pdev, 2, 0);
 364         if (!ast->ioregs) {
 365                 ret = -EIO;
 366                 goto out_free;
 367         }
 368
 369         ast_detect_chip(dev);
 370
 371         if (ast->chip != AST1180) {
 372                 ast_get_dram_info(dev);
 373                 ast->vram_size = ast_get_vram_info(dev);
 374                 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
 375         }
 376
 377         ret = ast_mm_init(ast);
 378         if (ret)
 379                 goto out_free;
 380
 381         drm_mode_config_init(dev);
 382
 383         dev->mode_config.funcs = (void *)&ast_mode_funcs;
 384         dev->mode_config.min_width = 0;
 385         dev->mode_config.min_height = 0;
 386         dev->mode_config.preferred_depth = 24;
 387         dev->mode_config.prefer_shadow = 1;
 388
 389         if (ast->chip == AST2100 ||
 390             ast->chip == AST2200 ||
 391             ast->chip == AST2300 ||
 392             ast->chip == AST2400 ||
 393             ast->chip == AST1180) {
 394                 dev->mode_config.max_width = 1920;
 395                 dev->mode_config.max_height = 2048;
 396         } else {
 397                 dev->mode_config.max_width = 1600;
 398                 dev->mode_config.max_height = 1200;
 399         }
 400
 401         ret = ast_mode_init(dev);
 402         if (ret)
 403                 goto out_free;
 404
 405         ret = ast_fbdev_init(dev);
 406         if (ret)
 407                 goto out_free;
 408
 409         return 0;
 410 out_free:
 411         kfree(ast);
 412         dev->dev_private = NULL;
 413         return ret;
 414 }
 415
 416 int ast_driver_unload(struct drm_device *dev)
 417 {
 418         struct ast_private *ast = dev->dev_private;
 419
 420         kfree(ast->dp501_fw_addr);
 421         ast_mode_fini(dev);
 422         ast_fbdev_fini(dev);
 423         drm_mode_config_cleanup(dev);
 424
 425         ast_mm_fini(ast);
 426         pci_iounmap(dev->pdev, ast->ioregs);
 427         pci_iounmap(dev->pdev, ast->regs);
 428         kfree(ast);
 429         return 0;
 430 }
 431
 432 int ast_gem_create(struct drm_device *dev,
 433                    u32 size, bool iskernel,
 434                    struct drm_gem_object **obj)
 435 {
 436         struct ast_bo *astbo;
 437         int ret;
 438
 439         *obj = NULL;
 440
 441         size = roundup(size, PAGE_SIZE);
 442         if (size == 0)
 443                 return -EINVAL;
 444
 445         ret = ast_bo_create(dev, size, 0, 0, &astbo);
 446         if (ret) {
 447                 if (ret != -ERESTARTSYS)
 448                         DRM_ERROR("failed to allocate GEM object\n");
 449                 return ret;
 450         }
 451         *obj = &astbo->gem;
 452         return 0;
 453 }
 454
 455 int ast_dumb_create(struct drm_file *file,
 456                     struct drm_device *dev,
 457                     struct drm_mode_create_dumb *args)
 458 {
 459         int ret;
 460         struct drm_gem_object *gobj;
 461         u32 handle;
 462
 463         args->pitch = args->width * ((args->bpp + 7) / 8);
 464         args->size = args->pitch * args->height;
 465
 466         ret = ast_gem_create(dev, args->size, false,
 467                              &gobj);
 468         if (ret)
 469                 return ret;
 470
 471         ret = drm_gem_handle_create(file, gobj, &handle);
 472         drm_gem_object_unreference_unlocked(gobj);
 473         if (ret)
 474                 return ret;
 475
 476         args->handle = handle;
 477         return 0;
 478 }
 479
 480 static void ast_bo_unref(struct ast_bo **bo)
 481 {
 482         struct ttm_buffer_object *tbo;
 483
 484         if ((*bo) == NULL)
 485                 return;
 486
 487         tbo = &((*bo)->bo);
 488         ttm_bo_unref(&tbo);
 489         *bo = NULL;
 490 }
 491
 492 void ast_gem_free_object(struct drm_gem_object *obj)
 493 {
 494         struct ast_bo *ast_bo = gem_to_ast_bo(obj);
 495
 496         ast_bo_unref(&ast_bo);
 497 }
 498
 499
 500 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
 501 {
 502         return drm_vma_node_offset_addr(&bo->bo.vma_node);
 503 }
 504 int
 505 ast_dumb_mmap_offset(struct drm_file *file,
 506                      struct drm_device *dev,
 507                      uint32_t handle,
 508                      uint64_t *offset)
 509 {
 510         struct drm_gem_object *obj;
 511         int ret;
 512         struct ast_bo *bo;
 513
 514         mutex_lock(&dev->struct_mutex);
 515         obj = drm_gem_object_lookup(dev, file, handle);
 516         if (obj == NULL) {
 517                 ret = -ENOENT;
 518                 goto out_unlock;
 519         }
 520
 521         bo = gem_to_ast_bo(obj);
 522         *offset = ast_bo_mmap_offset(bo);
 523
 524         drm_gem_object_unreference(obj);
 525         ret = 0;
 526 out_unlock:
 527         mutex_unlock(&dev->struct_mutex);
 528         return ret;
 529
 530 }
 531