static int tegra_fbdev_probe(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { struct tegra_fbdev *fbdev = to_tegra_fbdev(helper); struct tegra_drm *tegra = helper->dev->dev_private; struct drm_device *drm = helper->dev; struct drm_mode_fb_cmd2 cmd = { 0 }; unsigned int bytes_per_pixel; struct drm_framebuffer *fb; unsigned long offset; struct fb_info *info; struct tegra_bo *bo; size_t size; int err; bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8); cmd.width = sizes->surface_width; cmd.height = sizes->surface_height; cmd.pitches[0] = round_up(sizes->surface_width * bytes_per_pixel, tegra->pitch_align); cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); size = cmd.pitches[0] * cmd.height; bo = tegra_bo_create(drm, size, 0); if (IS_ERR(bo)) return PTR_ERR(bo); info = drm_fb_helper_alloc_fbi(helper); if (IS_ERR(info)) { dev_err(drm->dev, "failed to allocate framebuffer info\n"); drm_gem_object_put_unlocked(&bo->gem); return PTR_ERR(info); } fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1); if (IS_ERR(fbdev->fb)) { err = PTR_ERR(fbdev->fb); dev_err(drm->dev, "failed to allocate DRM framebuffer: %d\n", err); drm_gem_object_put_unlocked(&bo->gem); return PTR_ERR(fbdev->fb); } fb = fbdev->fb; helper->fb = fb; helper->fbdev = info; info->fbops = &tegra_fb_ops; drm_fb_helper_fill_info(info, helper, sizes); offset = info->var.xoffset * bytes_per_pixel + info->var.yoffset * fb->pitches[0]; if (bo->pages) { bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP, pgprot_writecombine(PAGE_KERNEL)); if (!bo->vaddr) { dev_err(drm->dev, "failed to vmap() framebuffer\n"); err = -ENOMEM; goto destroy; } } drm->mode_config.fb_base = (resource_size_t)bo->paddr; info->screen_base = (void __iomem *)bo->vaddr + offset; info->screen_size = size; info->fix.smem_start = (unsigned long)(bo->paddr + offset); info->fix.smem_len = size; return 0; destroy: drm_framebuffer_remove(fb); return err; }
static int radeonfb_create(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { struct radeon_fbdev *rfbdev = container_of(helper, struct radeon_fbdev, helper); struct radeon_device *rdev = rfbdev->rdev; struct fb_info *info; struct drm_framebuffer *fb = NULL; struct drm_mode_fb_cmd2 mode_cmd; struct drm_gem_object *gobj = NULL; struct radeon_bo *rbo = NULL; int ret; unsigned long tmp; mode_cmd.width = sizes->surface_width; mode_cmd.height = sizes->surface_height; /* avivo can't scanout real 24bpp */ if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) sizes->surface_bpp = 32; mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); if (ret) { DRM_ERROR("failed to create fbcon object %d\n", ret); return ret; } rbo = gem_to_radeon_bo(gobj); /* okay we have an object now allocate the framebuffer */ info = drm_fb_helper_alloc_fbi(helper); if (IS_ERR(info)) { ret = PTR_ERR(info); goto out; } /* radeon resume is fragile and needs a vt switch to help it along */ info->skip_vt_switch = false; ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->fb, &mode_cmd, gobj); if (ret) { DRM_ERROR("failed to initialize framebuffer %d\n", ret); goto out; } fb = &rfbdev->fb; /* setup helper */ rfbdev->helper.fb = fb; memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); info->fbops = &radeonfb_ops; tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; info->fix.smem_start = rdev->mc.aper_base + tmp; info->fix.smem_len = radeon_bo_size(rbo); info->screen_base = rbo->kptr; info->screen_size = radeon_bo_size(rbo); drm_fb_helper_fill_info(info, &rfbdev->helper, sizes); /* setup aperture base/size for vesafb takeover */ info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; info->apertures->ranges[0].size = rdev->mc.aper_size; /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ if (info->screen_base == NULL) { ret = -ENOSPC; goto out; } DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); DRM_INFO("fb depth is %d\n", fb->format->depth); DRM_INFO(" pitch is %d\n", fb->pitches[0]); vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); return 0; out: if (rbo) { } if (fb && ret) { drm_gem_object_put_unlocked(gobj); drm_framebuffer_unregister_private(fb); drm_framebuffer_cleanup(fb); kfree(fb); } return ret; }