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 } 459 460