1312fec14SDave Airlie /* 2312fec14SDave Airlie * Copyright 2012 Red Hat Inc. 3312fec14SDave Airlie * 4312fec14SDave Airlie * Permission is hereby granted, free of charge, to any person obtaining a 5312fec14SDave Airlie * copy of this software and associated documentation files (the 6312fec14SDave Airlie * "Software"), to deal in the Software without restriction, including 7312fec14SDave Airlie * without limitation the rights to use, copy, modify, merge, publish, 8312fec14SDave Airlie * distribute, sub license, and/or sell copies of the Software, and to 9312fec14SDave Airlie * permit persons to whom the Software is furnished to do so, subject to 10312fec14SDave Airlie * the following conditions: 11312fec14SDave Airlie * 12312fec14SDave Airlie * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13312fec14SDave Airlie * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14312fec14SDave Airlie * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 15312fec14SDave Airlie * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 16312fec14SDave Airlie * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 17312fec14SDave Airlie * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 18312fec14SDave Airlie * USE OR OTHER DEALINGS IN THE SOFTWARE. 19312fec14SDave Airlie * 20312fec14SDave Airlie * The above copyright notice and this permission notice (including the 21312fec14SDave Airlie * next paragraph) shall be included in all copies or substantial portions 22312fec14SDave Airlie * of the Software. 23312fec14SDave Airlie * 24312fec14SDave Airlie */ 25312fec14SDave Airlie /* 26312fec14SDave Airlie * Authors: Dave Airlie <airlied@redhat.com> 27312fec14SDave Airlie */ 28760285e7SDavid Howells #include <drm/drmP.h> 29312fec14SDave Airlie #include "ast_drv.h" 30312fec14SDave Airlie 31312fec14SDave Airlie 32760285e7SDavid Howells #include <drm/drm_fb_helper.h> 33760285e7SDavid Howells #include <drm/drm_crtc_helper.h> 34312fec14SDave Airlie 35312fec14SDave Airlie #include "ast_dram_tables.h" 36312fec14SDave Airlie 37312fec14SDave Airlie void ast_set_index_reg_mask(struct ast_private *ast, 38312fec14SDave Airlie uint32_t base, uint8_t index, 39312fec14SDave Airlie uint8_t mask, uint8_t val) 40312fec14SDave Airlie { 41312fec14SDave Airlie u8 tmp; 42312fec14SDave Airlie ast_io_write8(ast, base, index); 43312fec14SDave Airlie tmp = (ast_io_read8(ast, base + 1) & mask) | val; 44312fec14SDave Airlie ast_set_index_reg(ast, base, index, tmp); 45312fec14SDave Airlie } 46312fec14SDave Airlie 47312fec14SDave Airlie uint8_t ast_get_index_reg(struct ast_private *ast, 48312fec14SDave Airlie uint32_t base, uint8_t index) 49312fec14SDave Airlie { 50312fec14SDave Airlie uint8_t ret; 51312fec14SDave Airlie ast_io_write8(ast, base, index); 52312fec14SDave Airlie ret = ast_io_read8(ast, base + 1); 53312fec14SDave Airlie return ret; 54312fec14SDave Airlie } 55312fec14SDave Airlie 56312fec14SDave Airlie uint8_t ast_get_index_reg_mask(struct ast_private *ast, 57312fec14SDave Airlie uint32_t base, uint8_t index, uint8_t mask) 58312fec14SDave Airlie { 59312fec14SDave Airlie uint8_t ret; 60312fec14SDave Airlie ast_io_write8(ast, base, index); 61312fec14SDave Airlie ret = ast_io_read8(ast, base + 1) & mask; 62312fec14SDave Airlie return ret; 63312fec14SDave Airlie } 64312fec14SDave Airlie 65312fec14SDave Airlie 66312fec14SDave Airlie static int ast_detect_chip(struct drm_device *dev) 67312fec14SDave Airlie { 68312fec14SDave Airlie struct ast_private *ast = dev->dev_private; 69f1f62f2cSDave Airlie uint32_t data, jreg; 70312fec14SDave Airlie 71312fec14SDave Airlie if (dev->pdev->device == PCI_CHIP_AST1180) { 72312fec14SDave Airlie ast->chip = AST1100; 73312fec14SDave Airlie DRM_INFO("AST 1180 detected\n"); 74312fec14SDave Airlie } else { 75312fec14SDave Airlie if (dev->pdev->revision >= 0x20) { 76312fec14SDave Airlie ast->chip = AST2300; 77312fec14SDave Airlie DRM_INFO("AST 2300 detected\n"); 78312fec14SDave Airlie } else if (dev->pdev->revision >= 0x10) { 79312fec14SDave Airlie uint32_t data; 80312fec14SDave Airlie ast_write32(ast, 0xf004, 0x1e6e0000); 81312fec14SDave Airlie ast_write32(ast, 0xf000, 0x1); 82312fec14SDave Airlie 83312fec14SDave Airlie data = ast_read32(ast, 0x1207c); 84312fec14SDave Airlie switch (data & 0x0300) { 85312fec14SDave Airlie case 0x0200: 86312fec14SDave Airlie ast->chip = AST1100; 87312fec14SDave Airlie DRM_INFO("AST 1100 detected\n"); 88312fec14SDave Airlie break; 89312fec14SDave Airlie case 0x0100: 90312fec14SDave Airlie ast->chip = AST2200; 91312fec14SDave Airlie DRM_INFO("AST 2200 detected\n"); 92312fec14SDave Airlie break; 93312fec14SDave Airlie case 0x0000: 94312fec14SDave Airlie ast->chip = AST2150; 95312fec14SDave Airlie DRM_INFO("AST 2150 detected\n"); 96312fec14SDave Airlie break; 97312fec14SDave Airlie default: 98312fec14SDave Airlie ast->chip = AST2100; 99312fec14SDave Airlie DRM_INFO("AST 2100 detected\n"); 100312fec14SDave Airlie break; 101312fec14SDave Airlie } 102312fec14SDave Airlie ast->vga2_clone = false; 103312fec14SDave Airlie } else { 104312fec14SDave Airlie ast->chip = 2000; 105312fec14SDave Airlie DRM_INFO("AST 2000 detected\n"); 106312fec14SDave Airlie } 107312fec14SDave Airlie } 108f1f62f2cSDave Airlie 109f1f62f2cSDave Airlie switch (ast->chip) { 110f1f62f2cSDave Airlie case AST1180: 111f1f62f2cSDave Airlie ast->support_wide_screen = true; 112f1f62f2cSDave Airlie break; 113f1f62f2cSDave Airlie case AST2000: 114f1f62f2cSDave Airlie ast->support_wide_screen = false; 115f1f62f2cSDave Airlie break; 116f1f62f2cSDave Airlie default: 117f1f62f2cSDave Airlie jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); 118f1f62f2cSDave Airlie if (!(jreg & 0x80)) 119f1f62f2cSDave Airlie ast->support_wide_screen = true; 120f1f62f2cSDave Airlie else if (jreg & 0x01) 121f1f62f2cSDave Airlie ast->support_wide_screen = true; 122f1f62f2cSDave Airlie else { 123f1f62f2cSDave Airlie ast->support_wide_screen = false; 124f1f62f2cSDave Airlie if (ast->chip == AST2300) { 125f1f62f2cSDave Airlie ast_write32(ast, 0xf004, 0x1e6e0000); 126f1f62f2cSDave Airlie ast_write32(ast, 0xf000, 0x1); 127f1f62f2cSDave Airlie data = ast_read32(ast, 0x1207c); 128f1f62f2cSDave Airlie if ((data & 0x300) == 0) /* ast1300 */ 129f1f62f2cSDave Airlie ast->support_wide_screen = true; 130f1f62f2cSDave Airlie } 131f1f62f2cSDave Airlie } 132f1f62f2cSDave Airlie break; 133f1f62f2cSDave Airlie } 134f1f62f2cSDave Airlie 135312fec14SDave Airlie return 0; 136312fec14SDave Airlie } 137312fec14SDave Airlie 138312fec14SDave Airlie static int ast_get_dram_info(struct drm_device *dev) 139312fec14SDave Airlie { 140312fec14SDave Airlie struct ast_private *ast = dev->dev_private; 141312fec14SDave Airlie uint32_t data, data2; 142312fec14SDave Airlie uint32_t denum, num, div, ref_pll; 143312fec14SDave Airlie 144312fec14SDave Airlie ast_write32(ast, 0xf004, 0x1e6e0000); 145312fec14SDave Airlie ast_write32(ast, 0xf000, 0x1); 146312fec14SDave Airlie 147312fec14SDave Airlie 148312fec14SDave Airlie ast_write32(ast, 0x10000, 0xfc600309); 149312fec14SDave Airlie 150312fec14SDave Airlie do { 151312fec14SDave Airlie ; 152312fec14SDave Airlie } while (ast_read32(ast, 0x10000) != 0x01); 153312fec14SDave Airlie data = ast_read32(ast, 0x10004); 154312fec14SDave Airlie 155312fec14SDave Airlie if (data & 0x400) 156312fec14SDave Airlie ast->dram_bus_width = 16; 157312fec14SDave Airlie else 158312fec14SDave Airlie ast->dram_bus_width = 32; 159312fec14SDave Airlie 160312fec14SDave Airlie if (ast->chip == AST2300) { 161312fec14SDave Airlie switch (data & 0x03) { 162312fec14SDave Airlie case 0: 163312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx16; 164312fec14SDave Airlie break; 165312fec14SDave Airlie default: 166312fec14SDave Airlie case 1: 167312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx16; 168312fec14SDave Airlie break; 169312fec14SDave Airlie case 2: 170312fec14SDave Airlie ast->dram_type = AST_DRAM_2Gx16; 171312fec14SDave Airlie break; 172312fec14SDave Airlie case 3: 173312fec14SDave Airlie ast->dram_type = AST_DRAM_4Gx16; 174312fec14SDave Airlie break; 175312fec14SDave Airlie } 176312fec14SDave Airlie } else { 177312fec14SDave Airlie switch (data & 0x0c) { 178312fec14SDave Airlie case 0: 179312fec14SDave Airlie case 4: 180312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx16; 181312fec14SDave Airlie break; 182312fec14SDave Airlie case 8: 183312fec14SDave Airlie if (data & 0x40) 184312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx16; 185312fec14SDave Airlie else 186312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx32; 187312fec14SDave Airlie break; 188312fec14SDave Airlie case 0xc: 189312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx32; 190312fec14SDave Airlie break; 191312fec14SDave Airlie } 192312fec14SDave Airlie } 193312fec14SDave Airlie 194312fec14SDave Airlie data = ast_read32(ast, 0x10120); 195312fec14SDave Airlie data2 = ast_read32(ast, 0x10170); 196312fec14SDave Airlie if (data2 & 0x2000) 197312fec14SDave Airlie ref_pll = 14318; 198312fec14SDave Airlie else 199312fec14SDave Airlie ref_pll = 12000; 200312fec14SDave Airlie 201312fec14SDave Airlie denum = data & 0x1f; 202312fec14SDave Airlie num = (data & 0x3fe0) >> 5; 203312fec14SDave Airlie data = (data & 0xc000) >> 14; 204312fec14SDave Airlie switch (data) { 205312fec14SDave Airlie case 3: 206312fec14SDave Airlie div = 0x4; 207312fec14SDave Airlie break; 208312fec14SDave Airlie case 2: 209312fec14SDave Airlie case 1: 210312fec14SDave Airlie div = 0x2; 211312fec14SDave Airlie break; 212312fec14SDave Airlie default: 213312fec14SDave Airlie div = 0x1; 214312fec14SDave Airlie break; 215312fec14SDave Airlie } 216312fec14SDave Airlie ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000); 217312fec14SDave Airlie return 0; 218312fec14SDave Airlie } 219312fec14SDave Airlie 220312fec14SDave Airlie static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb) 221312fec14SDave Airlie { 222312fec14SDave Airlie struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb); 223312fec14SDave Airlie if (ast_fb->obj) 224312fec14SDave Airlie drm_gem_object_unreference_unlocked(ast_fb->obj); 225312fec14SDave Airlie 226312fec14SDave Airlie drm_framebuffer_cleanup(fb); 227312fec14SDave Airlie kfree(fb); 228312fec14SDave Airlie } 229312fec14SDave Airlie 230312fec14SDave Airlie static const struct drm_framebuffer_funcs ast_fb_funcs = { 231312fec14SDave Airlie .destroy = ast_user_framebuffer_destroy, 232312fec14SDave Airlie }; 233312fec14SDave Airlie 234312fec14SDave Airlie 235312fec14SDave Airlie int ast_framebuffer_init(struct drm_device *dev, 236312fec14SDave Airlie struct ast_framebuffer *ast_fb, 237312fec14SDave Airlie struct drm_mode_fb_cmd2 *mode_cmd, 238312fec14SDave Airlie struct drm_gem_object *obj) 239312fec14SDave Airlie { 240312fec14SDave Airlie int ret; 241312fec14SDave Airlie 242c7d73f6aSDaniel Vetter drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd); 243c7d73f6aSDaniel Vetter ast_fb->obj = obj; 244312fec14SDave Airlie ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs); 245312fec14SDave Airlie if (ret) { 246312fec14SDave Airlie DRM_ERROR("framebuffer init failed %d\n", ret); 247312fec14SDave Airlie return ret; 248312fec14SDave Airlie } 249312fec14SDave Airlie return 0; 250312fec14SDave Airlie } 251312fec14SDave Airlie 252312fec14SDave Airlie static struct drm_framebuffer * 253312fec14SDave Airlie ast_user_framebuffer_create(struct drm_device *dev, 254312fec14SDave Airlie struct drm_file *filp, 255312fec14SDave Airlie struct drm_mode_fb_cmd2 *mode_cmd) 256312fec14SDave Airlie { 257312fec14SDave Airlie struct drm_gem_object *obj; 258312fec14SDave Airlie struct ast_framebuffer *ast_fb; 259312fec14SDave Airlie int ret; 260312fec14SDave Airlie 261312fec14SDave Airlie obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]); 262312fec14SDave Airlie if (obj == NULL) 263312fec14SDave Airlie return ERR_PTR(-ENOENT); 264312fec14SDave Airlie 265312fec14SDave Airlie ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL); 266312fec14SDave Airlie if (!ast_fb) { 267312fec14SDave Airlie drm_gem_object_unreference_unlocked(obj); 268312fec14SDave Airlie return ERR_PTR(-ENOMEM); 269312fec14SDave Airlie } 270312fec14SDave Airlie 271312fec14SDave Airlie ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj); 272312fec14SDave Airlie if (ret) { 273312fec14SDave Airlie drm_gem_object_unreference_unlocked(obj); 274312fec14SDave Airlie kfree(ast_fb); 275312fec14SDave Airlie return ERR_PTR(ret); 276312fec14SDave Airlie } 277312fec14SDave Airlie return &ast_fb->base; 278312fec14SDave Airlie } 279312fec14SDave Airlie 280312fec14SDave Airlie static const struct drm_mode_config_funcs ast_mode_funcs = { 281312fec14SDave Airlie .fb_create = ast_user_framebuffer_create, 282312fec14SDave Airlie }; 283312fec14SDave Airlie 284312fec14SDave Airlie static u32 ast_get_vram_info(struct drm_device *dev) 285312fec14SDave Airlie { 286312fec14SDave Airlie struct ast_private *ast = dev->dev_private; 287312fec14SDave Airlie u8 jreg; 288312fec14SDave Airlie 289312fec14SDave Airlie ast_open_key(ast); 290312fec14SDave Airlie 291312fec14SDave Airlie jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); 292312fec14SDave Airlie switch (jreg & 3) { 293312fec14SDave Airlie case 0: return AST_VIDMEM_SIZE_8M; 294312fec14SDave Airlie case 1: return AST_VIDMEM_SIZE_16M; 295312fec14SDave Airlie case 2: return AST_VIDMEM_SIZE_32M; 296312fec14SDave Airlie case 3: return AST_VIDMEM_SIZE_64M; 297312fec14SDave Airlie } 298312fec14SDave Airlie return AST_VIDMEM_DEFAULT_SIZE; 299312fec14SDave Airlie } 300312fec14SDave Airlie 301312fec14SDave Airlie int ast_driver_load(struct drm_device *dev, unsigned long flags) 302312fec14SDave Airlie { 303312fec14SDave Airlie struct ast_private *ast; 304312fec14SDave Airlie int ret = 0; 305312fec14SDave Airlie 306312fec14SDave Airlie ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL); 307312fec14SDave Airlie if (!ast) 308312fec14SDave Airlie return -ENOMEM; 309312fec14SDave Airlie 310312fec14SDave Airlie dev->dev_private = ast; 311312fec14SDave Airlie ast->dev = dev; 312312fec14SDave Airlie 313312fec14SDave Airlie ast->regs = pci_iomap(dev->pdev, 1, 0); 314312fec14SDave Airlie if (!ast->regs) { 315312fec14SDave Airlie ret = -EIO; 316312fec14SDave Airlie goto out_free; 317312fec14SDave Airlie } 318312fec14SDave Airlie ast->ioregs = pci_iomap(dev->pdev, 2, 0); 319312fec14SDave Airlie if (!ast->ioregs) { 320312fec14SDave Airlie ret = -EIO; 321312fec14SDave Airlie goto out_free; 322312fec14SDave Airlie } 323312fec14SDave Airlie 324312fec14SDave Airlie ast_detect_chip(dev); 325312fec14SDave Airlie 326312fec14SDave Airlie if (ast->chip != AST1180) { 327312fec14SDave Airlie ast_get_dram_info(dev); 328312fec14SDave Airlie ast->vram_size = ast_get_vram_info(dev); 329312fec14SDave Airlie DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size); 330312fec14SDave Airlie } 331312fec14SDave Airlie 332312fec14SDave Airlie ret = ast_mm_init(ast); 333312fec14SDave Airlie if (ret) 334312fec14SDave Airlie goto out_free; 335312fec14SDave Airlie 336312fec14SDave Airlie drm_mode_config_init(dev); 337312fec14SDave Airlie 338312fec14SDave Airlie dev->mode_config.funcs = (void *)&ast_mode_funcs; 339312fec14SDave Airlie dev->mode_config.min_width = 0; 340312fec14SDave Airlie dev->mode_config.min_height = 0; 341312fec14SDave Airlie dev->mode_config.preferred_depth = 24; 342312fec14SDave Airlie dev->mode_config.prefer_shadow = 1; 343312fec14SDave Airlie 344312fec14SDave Airlie if (ast->chip == AST2100 || 345312fec14SDave Airlie ast->chip == AST2200 || 346312fec14SDave Airlie ast->chip == AST2300 || 347312fec14SDave Airlie ast->chip == AST1180) { 348312fec14SDave Airlie dev->mode_config.max_width = 1920; 349312fec14SDave Airlie dev->mode_config.max_height = 2048; 350312fec14SDave Airlie } else { 351312fec14SDave Airlie dev->mode_config.max_width = 1600; 352312fec14SDave Airlie dev->mode_config.max_height = 1200; 353312fec14SDave Airlie } 354312fec14SDave Airlie 355312fec14SDave Airlie ret = ast_mode_init(dev); 356312fec14SDave Airlie if (ret) 357312fec14SDave Airlie goto out_free; 358312fec14SDave Airlie 359312fec14SDave Airlie ret = ast_fbdev_init(dev); 360312fec14SDave Airlie if (ret) 361312fec14SDave Airlie goto out_free; 362312fec14SDave Airlie 363312fec14SDave Airlie return 0; 364312fec14SDave Airlie out_free: 365312fec14SDave Airlie kfree(ast); 366312fec14SDave Airlie dev->dev_private = NULL; 367312fec14SDave Airlie return ret; 368312fec14SDave Airlie } 369312fec14SDave Airlie 370312fec14SDave Airlie int ast_driver_unload(struct drm_device *dev) 371312fec14SDave Airlie { 372312fec14SDave Airlie struct ast_private *ast = dev->dev_private; 373312fec14SDave Airlie 374312fec14SDave Airlie ast_mode_fini(dev); 375312fec14SDave Airlie ast_fbdev_fini(dev); 376312fec14SDave Airlie drm_mode_config_cleanup(dev); 377312fec14SDave Airlie 378312fec14SDave Airlie ast_mm_fini(ast); 379312fec14SDave Airlie pci_iounmap(dev->pdev, ast->ioregs); 380312fec14SDave Airlie pci_iounmap(dev->pdev, ast->regs); 381312fec14SDave Airlie kfree(ast); 382312fec14SDave Airlie return 0; 383312fec14SDave Airlie } 384312fec14SDave Airlie 385312fec14SDave Airlie int ast_gem_create(struct drm_device *dev, 386312fec14SDave Airlie u32 size, bool iskernel, 387312fec14SDave Airlie struct drm_gem_object **obj) 388312fec14SDave Airlie { 389312fec14SDave Airlie struct ast_bo *astbo; 390312fec14SDave Airlie int ret; 391312fec14SDave Airlie 392312fec14SDave Airlie *obj = NULL; 393312fec14SDave Airlie 394312fec14SDave Airlie size = roundup(size, PAGE_SIZE); 395312fec14SDave Airlie if (size == 0) 396312fec14SDave Airlie return -EINVAL; 397312fec14SDave Airlie 398312fec14SDave Airlie ret = ast_bo_create(dev, size, 0, 0, &astbo); 399312fec14SDave Airlie if (ret) { 400312fec14SDave Airlie if (ret != -ERESTARTSYS) 401312fec14SDave Airlie DRM_ERROR("failed to allocate GEM object\n"); 402312fec14SDave Airlie return ret; 403312fec14SDave Airlie } 404312fec14SDave Airlie *obj = &astbo->gem; 405312fec14SDave Airlie return 0; 406312fec14SDave Airlie } 407312fec14SDave Airlie 408312fec14SDave Airlie int ast_dumb_create(struct drm_file *file, 409312fec14SDave Airlie struct drm_device *dev, 410312fec14SDave Airlie struct drm_mode_create_dumb *args) 411312fec14SDave Airlie { 412312fec14SDave Airlie int ret; 413312fec14SDave Airlie struct drm_gem_object *gobj; 414312fec14SDave Airlie u32 handle; 415312fec14SDave Airlie 416312fec14SDave Airlie args->pitch = args->width * ((args->bpp + 7) / 8); 417312fec14SDave Airlie args->size = args->pitch * args->height; 418312fec14SDave Airlie 419312fec14SDave Airlie ret = ast_gem_create(dev, args->size, false, 420312fec14SDave Airlie &gobj); 421312fec14SDave Airlie if (ret) 422312fec14SDave Airlie return ret; 423312fec14SDave Airlie 424312fec14SDave Airlie ret = drm_gem_handle_create(file, gobj, &handle); 425312fec14SDave Airlie drm_gem_object_unreference_unlocked(gobj); 426312fec14SDave Airlie if (ret) 427312fec14SDave Airlie return ret; 428312fec14SDave Airlie 429312fec14SDave Airlie args->handle = handle; 430312fec14SDave Airlie return 0; 431312fec14SDave Airlie } 432312fec14SDave Airlie 433f6109803SRashika static void ast_bo_unref(struct ast_bo **bo) 434312fec14SDave Airlie { 435312fec14SDave Airlie struct ttm_buffer_object *tbo; 436312fec14SDave Airlie 437312fec14SDave Airlie if ((*bo) == NULL) 438312fec14SDave Airlie return; 439312fec14SDave Airlie 440312fec14SDave Airlie tbo = &((*bo)->bo); 441312fec14SDave Airlie ttm_bo_unref(&tbo); 442312fec14SDave Airlie if (tbo == NULL) 443312fec14SDave Airlie *bo = NULL; 444312fec14SDave Airlie 445312fec14SDave Airlie } 446312fec14SDave Airlie void ast_gem_free_object(struct drm_gem_object *obj) 447312fec14SDave Airlie { 448312fec14SDave Airlie struct ast_bo *ast_bo = gem_to_ast_bo(obj); 449312fec14SDave Airlie 450312fec14SDave Airlie if (!ast_bo) 451312fec14SDave Airlie return; 452312fec14SDave Airlie ast_bo_unref(&ast_bo); 453312fec14SDave Airlie } 454312fec14SDave Airlie 455312fec14SDave Airlie 456312fec14SDave Airlie static inline u64 ast_bo_mmap_offset(struct ast_bo *bo) 457312fec14SDave Airlie { 45872525b3fSDavid Herrmann return drm_vma_node_offset_addr(&bo->bo.vma_node); 459312fec14SDave Airlie } 460312fec14SDave Airlie int 461312fec14SDave Airlie ast_dumb_mmap_offset(struct drm_file *file, 462312fec14SDave Airlie struct drm_device *dev, 463312fec14SDave Airlie uint32_t handle, 464312fec14SDave Airlie uint64_t *offset) 465312fec14SDave Airlie { 466312fec14SDave Airlie struct drm_gem_object *obj; 467312fec14SDave Airlie int ret; 468312fec14SDave Airlie struct ast_bo *bo; 469312fec14SDave Airlie 470312fec14SDave Airlie mutex_lock(&dev->struct_mutex); 471312fec14SDave Airlie obj = drm_gem_object_lookup(dev, file, handle); 472312fec14SDave Airlie if (obj == NULL) { 473312fec14SDave Airlie ret = -ENOENT; 474312fec14SDave Airlie goto out_unlock; 475312fec14SDave Airlie } 476312fec14SDave Airlie 477312fec14SDave Airlie bo = gem_to_ast_bo(obj); 478312fec14SDave Airlie *offset = ast_bo_mmap_offset(bo); 479312fec14SDave Airlie 480312fec14SDave Airlie drm_gem_object_unreference(obj); 481312fec14SDave Airlie ret = 0; 482312fec14SDave Airlie out_unlock: 483312fec14SDave Airlie mutex_unlock(&dev->struct_mutex); 484312fec14SDave Airlie return ret; 485312fec14SDave Airlie 486312fec14SDave Airlie } 487312fec14SDave Airlie 488