/** * intel_parse_bios - find VBT and initialize settings from the BIOS * @dev: DRM device * * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers * to appropriate values. * * Returns 0 on success, nonzero on failure. */ bool intel_parse_bios(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct bdb_header *bdb = NULL; u8 *bios; init_vbt_defaults(dev_priv); /* XXX Should this validation be moved to intel_opregion.c? */ if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) { struct vbt_header *vbt = dev_priv->opregion.vbt; if (memcmp(vbt->signature, "$VBT", 4) == 0) { DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n", vbt->signature); bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset); } else dev_priv->opregion.vbt = NULL; } bios = NULL; #if 1 if (bdb == NULL) { KIB_NOTYET(); return (-1); } #else if (bdb == NULL) { struct vbt_header *vbt = NULL; size_t size; int i; bios = pci_map_rom(pdev, &size); if (!bios) return -1; /* Scour memory looking for the VBT signature */ for (i = 0; i + 4 < size; i++) { if (!memcmp(bios + i, "$VBT", 4)) { vbt = (struct vbt_header *)(bios + i); break; } } if (!vbt) { DRM_DEBUG_DRIVER("VBT signature missing\n"); pci_unmap_rom(pdev, bios); return -1; } bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset); } #endif /* Grab useful general definitions */ parse_general_features(dev_priv, bdb); parse_general_definitions(dev_priv, bdb); parse_lfp_panel_data(dev_priv, bdb); parse_sdvo_panel_data(dev_priv, bdb); parse_sdvo_device_mapping(dev_priv, bdb); parse_device_mapping(dev_priv, bdb); parse_driver_features(dev_priv, bdb); parse_edp(dev_priv, bdb); #if 0 if (bios) pci_unmap_rom(pdev, bios); #endif return 0; }
static int intelfb_create(struct intel_fbdev *ifbdev, struct drm_fb_helper_surface_size *sizes) { struct drm_device *dev = ifbdev->helper.dev; #if 0 struct drm_i915_private *dev_priv = dev->dev_private; #endif struct fb_info *info; struct drm_framebuffer *fb; struct drm_mode_fb_cmd2 mode_cmd; struct drm_i915_gem_object *obj; int size, ret; /* we don't do packed 24bpp */ if (sizes->surface_bpp == 24) sizes->surface_bpp = 32; mode_cmd.width = sizes->surface_width; mode_cmd.height = sizes->surface_height; mode_cmd.pitches[0] = roundup2(mode_cmd.width * ((sizes->surface_bpp + 7) / 8), 64); mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); size = mode_cmd.pitches[0] * mode_cmd.height; size = roundup2(size, PAGE_SIZE); obj = i915_gem_alloc_object(dev, size); if (!obj) { DRM_ERROR("failed to allocate framebuffer\n"); ret = -ENOMEM; goto out; } DRM_LOCK(dev); /* Flush everything out, we'll be doing GTT only from now on */ ret = intel_pin_and_fence_fb_obj(dev, obj, false); if (ret) { DRM_ERROR("failed to pin fb: %d\n", ret); goto out_unref; } #if 0 info = framebuffer_alloc(0, device); if (!info) { ret = -ENOMEM; goto out_unpin; } info->par = ifbdev; #else info = malloc(sizeof(struct fb_info), DRM_MEM_KMS, M_WAITOK | M_ZERO); info->fb_size = size; info->fb_bpp = sizes->surface_bpp; info->fb_width = sizes->fb_width; info->fb_height = sizes->fb_height; info->fb_pbase = dev->agp->base + obj->gtt_offset; info->fb_vbase = (vm_offset_t)pmap_mapdev_attr(info->fb_pbase, size, PAT_WRITE_COMBINING); #endif ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); if (ret) goto out_unpin; fb = &ifbdev->ifb.base; ifbdev->helper.fb = fb; ifbdev->helper.fbdev = info; #if 0 strcpy(info->fix.id, "inteldrmfb"); info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; info->fbops = &intelfb_ops; ret = fb_alloc_cmap(&info->cmap, 256, 0); if (ret) { ret = -ENOMEM; goto out_unpin; } /* setup aperture base/size for vesafb takeover */ info->apertures = alloc_apertures(1); if (!info->apertures) { ret = -ENOMEM; goto out_unpin; } info->apertures->ranges[0].base = dev->mode_config.fb_base; info->apertures->ranges[0].size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset; info->fix.smem_len = size; info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size); if (!info->screen_base) { ret = -ENOSPC; goto out_unpin; } info->screen_size = size; // memset(info->screen_base, 0, size); drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ #endif DRM_DEBUG_KMS("allocated %dx%d (s %dbits) fb: 0x%08x, bo %p\n", fb->width, fb->height, fb->depth, obj->gtt_offset, obj); DRM_UNLOCK(dev); #if 1 KIB_NOTYET(); #else vga_switcheroo_client_fb_set(dev->pdev, info); #endif return 0; out_unpin: i915_gem_object_unpin(obj); out_unref: drm_gem_object_unreference(&obj->base); DRM_UNLOCK(dev); out: return ret; }