| /* |
| * Copyright © 2007 David Airlie |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * David Airlie |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/slab.h> |
| #include <linux/vga_switcheroo.h> |
| |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_fb_helper.h> |
| #include <drm/drm_fourcc.h> |
| #include <drm/drm_framebuffer.h> |
| #include <drm/radeon_drm.h> |
| |
| #include "radeon.h" |
| |
| /* object hierarchy - |
| * this contains a helper + a radeon fb |
| * the helper contains a pointer to radeon framebuffer baseclass. |
| */ |
| struct radeon_fbdev { |
| struct drm_fb_helper helper; /* must be first */ |
| struct drm_framebuffer fb; |
| struct radeon_device *rdev; |
| }; |
| |
| static int |
| radeonfb_open(struct fb_info *info, int user) |
| { |
| struct radeon_fbdev *rfbdev = info->par; |
| struct radeon_device *rdev = rfbdev->rdev; |
| int ret = pm_runtime_get_sync(rdev->ddev->dev); |
| |
| if (ret < 0 && ret != -EACCES) { |
| pm_runtime_mark_last_busy(rdev->ddev->dev); |
| pm_runtime_put_autosuspend(rdev->ddev->dev); |
| return ret; |
| } |
| return 0; |
| } |
| |
| static int |
| radeonfb_release(struct fb_info *info, int user) |
| { |
| struct radeon_fbdev *rfbdev = info->par; |
| struct radeon_device *rdev = rfbdev->rdev; |
| |
| pm_runtime_mark_last_busy(rdev->ddev->dev); |
| pm_runtime_put_autosuspend(rdev->ddev->dev); |
| return 0; |
| } |
| |
| static const struct fb_ops radeonfb_ops = { |
| .owner = THIS_MODULE, |
| DRM_FB_HELPER_DEFAULT_OPS, |
| .fb_open = radeonfb_open, |
| .fb_release = radeonfb_release, |
| .fb_read = drm_fb_helper_cfb_read, |
| .fb_write = drm_fb_helper_cfb_write, |
| .fb_fillrect = drm_fb_helper_cfb_fillrect, |
| .fb_copyarea = drm_fb_helper_cfb_copyarea, |
| .fb_imageblit = drm_fb_helper_cfb_imageblit, |
| }; |
| |
| |
| int radeon_align_pitch(struct radeon_device *rdev, int width, int cpp, bool tiled) |
| { |
| int aligned = width; |
| int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; |
| int pitch_mask = 0; |
| |
| switch (cpp) { |
| case 1: |
| pitch_mask = align_large ? 255 : 127; |
| break; |
| case 2: |
| pitch_mask = align_large ? 127 : 31; |
| break; |
| case 3: |
| case 4: |
| pitch_mask = align_large ? 63 : 15; |
| break; |
| } |
| |
| aligned += pitch_mask; |
| aligned &= ~pitch_mask; |
| return aligned * cpp; |
| } |
| |
| static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) |
| { |
| struct radeon_bo *rbo = gem_to_radeon_bo(gobj); |
| int ret; |
| |
| ret = radeon_bo_reserve(rbo, false); |
| if (likely(ret == 0)) { |
| radeon_bo_kunmap(rbo); |
| radeon_bo_unpin(rbo); |
| radeon_bo_unreserve(rbo); |
| } |
| drm_gem_object_put(gobj); |
| } |
| |
| static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct drm_gem_object **gobj_p) |
| { |
| const struct drm_format_info *info; |
| struct radeon_device *rdev = rfbdev->rdev; |
| struct drm_gem_object *gobj = NULL; |
| struct radeon_bo *rbo = NULL; |
| bool fb_tiled = false; /* useful for testing */ |
| u32 tiling_flags = 0; |
| int ret; |
| int aligned_size, size; |
| int height = mode_cmd->height; |
| u32 cpp; |
| |
| info = drm_get_format_info(rdev->ddev, mode_cmd); |
| cpp = info->cpp[0]; |
| |
| /* need to align pitch with crtc limits */ |
| mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, cpp, |
| fb_tiled); |
| |
| if (rdev->family >= CHIP_R600) |
| height = ALIGN(mode_cmd->height, 8); |
| size = mode_cmd->pitches[0] * height; |
| aligned_size = ALIGN(size, PAGE_SIZE); |
| ret = radeon_gem_object_create(rdev, aligned_size, 0, |
| RADEON_GEM_DOMAIN_VRAM, |
| 0, true, &gobj); |
| if (ret) { |
| pr_err("failed to allocate framebuffer (%d)\n", aligned_size); |
| return -ENOMEM; |
| } |
| rbo = gem_to_radeon_bo(gobj); |
| |
| if (fb_tiled) |
| tiling_flags = RADEON_TILING_MACRO; |
| |
| #ifdef __BIG_ENDIAN |
| switch (cpp) { |
| case 4: |
| tiling_flags |= RADEON_TILING_SWAP_32BIT; |
| break; |
| case 2: |
| tiling_flags |= RADEON_TILING_SWAP_16BIT; |
| break; |
| default: |
| break; |
| } |
| #endif |
| |
| if (tiling_flags) { |
| ret = radeon_bo_set_tiling_flags(rbo, |
| tiling_flags | RADEON_TILING_SURFACE, |
| mode_cmd->pitches[0]); |
| if (ret) |
| dev_err(rdev->dev, "FB failed to set tiling flags\n"); |
| } |
| |
| |
| ret = radeon_bo_reserve(rbo, false); |
| if (unlikely(ret != 0)) |
| goto out_unref; |
| /* Only 27 bit offset for legacy CRTC */ |
| ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, |
| ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, |
| NULL); |
| if (ret) { |
| radeon_bo_unreserve(rbo); |
| goto out_unref; |
| } |
| if (fb_tiled) |
| radeon_bo_check_tiling(rbo, 0, 0); |
| ret = radeon_bo_kmap(rbo, NULL); |
| radeon_bo_unreserve(rbo); |
| if (ret) |
| goto out_unref; |
| |
| *gobj_p = gobj; |
| return 0; |
| out_unref: |
| radeonfb_destroy_pinned_object(gobj); |
| *gobj_p = NULL; |
| return ret; |
| } |
| |
| 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_info(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); |
| |
| /* 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->pdev, info); |
| return 0; |
| |
| out: |
| if (fb && ret) { |
| drm_gem_object_put(gobj); |
| drm_framebuffer_unregister_private(fb); |
| drm_framebuffer_cleanup(fb); |
| kfree(fb); |
| } |
| return ret; |
| } |
| |
| static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) |
| { |
| struct drm_framebuffer *fb = &rfbdev->fb; |
| |
| drm_fb_helper_unregister_info(&rfbdev->helper); |
| |
| if (fb->obj[0]) { |
| radeonfb_destroy_pinned_object(fb->obj[0]); |
| fb->obj[0] = NULL; |
| drm_framebuffer_unregister_private(fb); |
| drm_framebuffer_cleanup(fb); |
| } |
| drm_fb_helper_fini(&rfbdev->helper); |
| |
| return 0; |
| } |
| |
| static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { |
| .fb_probe = radeonfb_create, |
| }; |
| |
| int radeon_fbdev_init(struct radeon_device *rdev) |
| { |
| struct radeon_fbdev *rfbdev; |
| int bpp_sel = 32; |
| int ret; |
| |
| /* don't enable fbdev if no connectors */ |
| if (list_empty(&rdev->ddev->mode_config.connector_list)) |
| return 0; |
| |
| /* select 8 bpp console on 8MB cards, or 16 bpp on RN50 or 32MB */ |
| if (rdev->mc.real_vram_size <= (8*1024*1024)) |
| bpp_sel = 8; |
| else if (ASIC_IS_RN50(rdev) || |
| rdev->mc.real_vram_size <= (32*1024*1024)) |
| bpp_sel = 16; |
| |
| rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); |
| if (!rfbdev) |
| return -ENOMEM; |
| |
| rfbdev->rdev = rdev; |
| rdev->mode_info.rfbdev = rfbdev; |
| |
| drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, bpp_sel, |
| &radeon_fb_helper_funcs); |
| |
| ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper); |
| if (ret) |
| goto free; |
| |
| /* disable all the possible outputs/crtcs before entering KMS mode */ |
| drm_helper_disable_unused_functions(rdev->ddev); |
| |
| ret = drm_fb_helper_initial_config(&rfbdev->helper); |
| if (ret) |
| goto fini; |
| |
| return 0; |
| |
| fini: |
| drm_fb_helper_fini(&rfbdev->helper); |
| free: |
| drm_fb_helper_unprepare(&rfbdev->helper); |
| kfree(rfbdev); |
| return ret; |
| } |
| |
| void radeon_fbdev_fini(struct radeon_device *rdev) |
| { |
| if (!rdev->mode_info.rfbdev) |
| return; |
| |
| radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); |
| drm_fb_helper_unprepare(&rdev->mode_info.rfbdev->helper); |
| kfree(rdev->mode_info.rfbdev); |
| rdev->mode_info.rfbdev = NULL; |
| } |
| |
| void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) |
| { |
| if (rdev->mode_info.rfbdev) |
| drm_fb_helper_set_suspend(&rdev->mode_info.rfbdev->helper, state); |
| } |
| |
| bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) |
| { |
| if (!rdev->mode_info.rfbdev) |
| return false; |
| |
| if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->fb.obj[0])) |
| return true; |
| return false; |
| } |