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