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
  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 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
 193 {
 194         struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
 195         if (ast_fb->obj)
 196                 drm_gem_object_unreference_unlocked(ast_fb->obj);
 197
 198         drm_framebuffer_cleanup(fb);
 199         kfree(fb);
 200 }
 201
 202 static const struct drm_framebuffer_funcs ast_fb_funcs = {
 203         .destroy = ast_user_framebuffer_destroy,
 204 };
 205
 206
 207 int ast_framebuffer_init(struct drm_device *dev,
 208                          struct ast_framebuffer *ast_fb,
 209                          struct drm_mode_fb_cmd2 *mode_cmd,
 210                          struct drm_gem_object *obj)
 211 {
 212         int ret;
 213
 214         drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
 215         ast_fb->obj = obj;
 216         ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
 217         if (ret) {
 218                 DRM_ERROR("framebuffer init failed %d\n", ret);
 219                 return ret;
 220         }
 221         return 0;
 222 }
 223
 224 static struct drm_framebuffer *
 225 ast_user_framebuffer_create(struct drm_device *dev,
 226                struct drm_file *filp,
 227                struct drm_mode_fb_cmd2 *mode_cmd)
 228 {
 229         struct drm_gem_object *obj;
 230         struct ast_framebuffer *ast_fb;
 231         int ret;
 232
 233         obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
 234         if (obj == NULL)
 235                 return ERR_PTR(-ENOENT);
 236
 237         ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
 238         if (!ast_fb) {
 239                 drm_gem_object_unreference_unlocked(obj);
 240                 return ERR_PTR(-ENOMEM);
 241         }
 242
 243         ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
 244         if (ret) {
 245                 drm_gem_object_unreference_unlocked(obj);
 246                 kfree(ast_fb);
 247                 return ERR_PTR(ret);
 248         }
 249         return &ast_fb->base;
 250 }
 251
 252 static const struct drm_mode_config_funcs ast_mode_funcs = {
 253         .fb_create = ast_user_framebuffer_create,
 254 };
 255
 256 static u32 ast_get_vram_info(struct drm_device *dev)
 257 {
 258         struct ast_private *ast = dev->dev_private;
 259         u8 jreg;
 260
 261         ast_open_key(ast);
 262
 263         jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
 264         switch (jreg & 3) {
 265         case 0: return AST_VIDMEM_SIZE_8M;
 266         case 1: return AST_VIDMEM_SIZE_16M;
 267         case 2: return AST_VIDMEM_SIZE_32M;
 268         case 3: return AST_VIDMEM_SIZE_64M;
 269         }
 270         return AST_VIDMEM_DEFAULT_SIZE;
 271 }
 272
 273 int ast_driver_load(struct drm_device *dev, unsigned long flags)
 274 {
 275         struct ast_private *ast;
 276         int ret = 0;
 277
 278         ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
 279         if (!ast)
 280                 return -ENOMEM;
 281
 282         dev->dev_private = ast;
 283         ast->dev = dev;
 284
 285         ast->regs = pci_iomap(dev->pdev, 1, 0);
 286         if (!ast->regs) {
 287                 ret = -EIO;
 288                 goto out_free;
 289         }
 290         ast->ioregs = pci_iomap(dev->pdev, 2, 0);
 291         if (!ast->ioregs) {
 292                 ret = -EIO;
 293                 goto out_free;
 294         }
 295
 296         ast_detect_chip(dev);
 297
 298         if (ast->chip != AST1180) {
 299                 ast_get_dram_info(dev);
 300                 ast->vram_size = ast_get_vram_info(dev);
 301                 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
 302         }
 303
 304         ret = ast_mm_init(ast);
 305         if (ret)
 306                 goto out_free;
 307
 308         drm_mode_config_init(dev);
 309
 310         dev->mode_config.funcs = (void *)&ast_mode_funcs;
 311         dev->mode_config.min_width = 0;
 312         dev->mode_config.min_height = 0;
 313         dev->mode_config.preferred_depth = 24;
 314         dev->mode_config.prefer_shadow = 1;
 315
 316         if (ast->chip == AST2100 ||
 317             ast->chip == AST2200 ||
 318             ast->chip == AST2300 ||
 319             ast->chip == AST1180) {
 320                 dev->mode_config.max_width = 1920;
 321                 dev->mode_config.max_height = 2048;
 322         } else {
 323                 dev->mode_config.max_width = 1600;
 324                 dev->mode_config.max_height = 1200;
 325         }
 326
 327         ret = ast_mode_init(dev);
 328         if (ret)
 329                 goto out_free;
 330
 331         ret = ast_fbdev_init(dev);
 332         if (ret)
 333                 goto out_free;
 334
 335         return 0;
 336 out_free:
 337         kfree(ast);
 338         dev->dev_private = NULL;
 339         return ret;
 340 }
 341
 342 int ast_driver_unload(struct drm_device *dev)
 343 {
 344         struct ast_private *ast = dev->dev_private;
 345
 346         ast_mode_fini(dev);
 347         ast_fbdev_fini(dev);
 348         drm_mode_config_cleanup(dev);
 349
 350         ast_mm_fini(ast);
 351         pci_iounmap(dev->pdev, ast->ioregs);
 352         pci_iounmap(dev->pdev, ast->regs);
 353         kfree(ast);
 354         return 0;
 355 }
 356
 357 int ast_gem_create(struct drm_device *dev,
 358                    u32 size, bool iskernel,
 359                    struct drm_gem_object **obj)
 360 {
 361         struct ast_bo *astbo;
 362         int ret;
 363
 364         *obj = NULL;
 365
 366         size = roundup(size, PAGE_SIZE);
 367         if (size == 0)
 368                 return -EINVAL;
 369
 370         ret = ast_bo_create(dev, size, 0, 0, &astbo);
 371         if (ret) {
 372                 if (ret != -ERESTARTSYS)
 373                         DRM_ERROR("failed to allocate GEM object\n");
 374                 return ret;
 375         }
 376         *obj = &astbo->gem;
 377         return 0;
 378 }
 379
 380 int ast_dumb_create(struct drm_file *file,
 381                     struct drm_device *dev,
 382                     struct drm_mode_create_dumb *args)
 383 {
 384         int ret;
 385         struct drm_gem_object *gobj;
 386         u32 handle;
 387
 388         args->pitch = args->width * ((args->bpp + 7) / 8);
 389         args->size = args->pitch * args->height;
 390
 391         ret = ast_gem_create(dev, args->size, false,
 392                              &gobj);
 393         if (ret)
 394                 return ret;
 395
 396         ret = drm_gem_handle_create(file, gobj, &handle);
 397         drm_gem_object_unreference_unlocked(gobj);
 398         if (ret)
 399                 return ret;
 400
 401         args->handle = handle;
 402         return 0;
 403 }
 404
 405 static void ast_bo_unref(struct ast_bo **bo)
 406 {
 407         struct ttm_buffer_object *tbo;
 408
 409         if ((*bo) == NULL)
 410                 return;
 411
 412         tbo = &((*bo)->bo);
 413         ttm_bo_unref(&tbo);
 414         if (tbo == NULL)
 415                 *bo = NULL;
 416
 417 }
 418 void ast_gem_free_object(struct drm_gem_object *obj)
 419 {
 420         struct ast_bo *ast_bo = gem_to_ast_bo(obj);
 421
 422         if (!ast_bo)
 423                 return;
 424         ast_bo_unref(&ast_bo);
 425 }
 426
 427
 428 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
 429 {
 430         return drm_vma_node_offset_addr(&bo->bo.vma_node);
 431 }
 432 int
 433 ast_dumb_mmap_offset(struct drm_file *file,
 434                      struct drm_device *dev,
 435                      uint32_t handle,
 436                      uint64_t *offset)
 437 {
 438         struct drm_gem_object *obj;
 439         int ret;
 440         struct ast_bo *bo;
 441
 442         mutex_lock(&dev->struct_mutex);
 443         obj = drm_gem_object_lookup(dev, file, handle);
 444         if (obj == NULL) {
 445                 ret = -ENOENT;
 446                 goto out_unlock;
 447         }
 448
 449         bo = gem_to_ast_bo(obj);
 450         *offset = ast_bo_mmap_offset(bo);
 451
 452         drm_gem_object_unreference(obj);
 453         ret = 0;
 454 out_unlock:
 455         mutex_unlock(&dev->struct_mutex);
 456         return ret;
 457
 458 }
 459