| /* |
| * 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/slab.h> |
| #include <linux/fb.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/amdgpu_drm.h> |
| #include "amdgpu.h" |
| #include "cikd.h" |
| |
| #include <drm/drm_fb_helper.h> |
| |
| #include <linux/vga_switcheroo.h> |
| |
| /* object hierarchy - |
| this contains a helper + a amdgpu fb |
| the helper contains a pointer to amdgpu framebuffer baseclass. |
| */ |
| struct amdgpu_fbdev { |
| struct drm_fb_helper helper; |
| struct amdgpu_framebuffer rfb; |
| struct amdgpu_device *adev; |
| }; |
| |
| static struct fb_ops amdgpufb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| .fb_fillrect = drm_fb_helper_cfb_fillrect, |
| .fb_copyarea = drm_fb_helper_cfb_copyarea, |
| .fb_imageblit = drm_fb_helper_cfb_imageblit, |
| .fb_pan_display = drm_fb_helper_pan_display, |
| .fb_blank = drm_fb_helper_blank, |
| .fb_setcmap = drm_fb_helper_setcmap, |
| .fb_debug_enter = drm_fb_helper_debug_enter, |
| .fb_debug_leave = drm_fb_helper_debug_leave, |
| }; |
| |
| |
| int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tiled) |
| { |
| int aligned = width; |
| int pitch_mask = 0; |
| |
| switch (bpp / 8) { |
| case 1: |
| pitch_mask = 255; |
| break; |
| case 2: |
| pitch_mask = 127; |
| break; |
| case 3: |
| case 4: |
| pitch_mask = 63; |
| break; |
| } |
| |
| aligned += pitch_mask; |
| aligned &= ~pitch_mask; |
| return aligned; |
| } |
| |
| static void amdgpufb_destroy_pinned_object(struct drm_gem_object *gobj) |
| { |
| struct amdgpu_bo *rbo = gem_to_amdgpu_bo(gobj); |
| int ret; |
| |
| ret = amdgpu_bo_reserve(rbo, false); |
| if (likely(ret == 0)) { |
| amdgpu_bo_kunmap(rbo); |
| amdgpu_bo_unpin(rbo); |
| amdgpu_bo_unreserve(rbo); |
| } |
| drm_gem_object_unreference_unlocked(gobj); |
| } |
| |
| static int amdgpufb_create_pinned_object(struct amdgpu_fbdev *rfbdev, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct drm_gem_object **gobj_p) |
| { |
| struct amdgpu_device *adev = rfbdev->adev; |
| struct drm_gem_object *gobj = NULL; |
| struct amdgpu_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 bpp, depth; |
| |
| drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); |
| |
| /* need to align pitch with crtc limits */ |
| mode_cmd->pitches[0] = amdgpu_align_pitch(adev, mode_cmd->width, bpp, |
| fb_tiled) * ((bpp + 1) / 8); |
| |
| height = ALIGN(mode_cmd->height, 8); |
| size = mode_cmd->pitches[0] * height; |
| aligned_size = ALIGN(size, PAGE_SIZE); |
| ret = amdgpu_gem_object_create(adev, aligned_size, 0, |
| AMDGPU_GEM_DOMAIN_VRAM, |
| AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED, |
| true, &gobj); |
| if (ret) { |
| printk(KERN_ERR "failed to allocate framebuffer (%d)\n", |
| aligned_size); |
| return -ENOMEM; |
| } |
| rbo = gem_to_amdgpu_bo(gobj); |
| |
| if (fb_tiled) |
| tiling_flags = AMDGPU_TILING_SET(ARRAY_MODE, GRPH_ARRAY_2D_TILED_THIN1); |
| |
| ret = amdgpu_bo_reserve(rbo, false); |
| if (unlikely(ret != 0)) |
| goto out_unref; |
| |
| if (tiling_flags) { |
| ret = amdgpu_bo_set_tiling_flags(rbo, |
| tiling_flags); |
| if (ret) |
| dev_err(adev->dev, "FB failed to set tiling flags\n"); |
| } |
| |
| |
| ret = amdgpu_bo_pin_restricted(rbo, AMDGPU_GEM_DOMAIN_VRAM, 0, 0, NULL); |
| if (ret) { |
| amdgpu_bo_unreserve(rbo); |
| goto out_unref; |
| } |
| ret = amdgpu_bo_kmap(rbo, NULL); |
| amdgpu_bo_unreserve(rbo); |
| if (ret) { |
| goto out_unref; |
| } |
| |
| *gobj_p = gobj; |
| return 0; |
| out_unref: |
| amdgpufb_destroy_pinned_object(gobj); |
| *gobj_p = NULL; |
| return ret; |
| } |
| |
| static int amdgpufb_create(struct drm_fb_helper *helper, |
| struct drm_fb_helper_surface_size *sizes) |
| { |
| struct amdgpu_fbdev *rfbdev = (struct amdgpu_fbdev *)helper; |
| struct amdgpu_device *adev = rfbdev->adev; |
| struct fb_info *info; |
| struct drm_framebuffer *fb = NULL; |
| struct drm_mode_fb_cmd2 mode_cmd; |
| struct drm_gem_object *gobj = NULL; |
| struct amdgpu_bo *rbo = NULL; |
| int ret; |
| unsigned long tmp; |
| |
| mode_cmd.width = sizes->surface_width; |
| mode_cmd.height = sizes->surface_height; |
| |
| if (sizes->surface_bpp == 24) |
| sizes->surface_bpp = 32; |
| |
| mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
| sizes->surface_depth); |
| |
| ret = amdgpufb_create_pinned_object(rfbdev, &mode_cmd, &gobj); |
| if (ret) { |
| DRM_ERROR("failed to create fbcon object %d\n", ret); |
| return ret; |
| } |
| |
| rbo = gem_to_amdgpu_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_unref; |
| } |
| |
| info->par = rfbdev; |
| info->skip_vt_switch = true; |
| |
| ret = amdgpu_framebuffer_init(adev->ddev, &rfbdev->rfb, &mode_cmd, gobj); |
| if (ret) { |
| DRM_ERROR("failed to initialize framebuffer %d\n", ret); |
| goto out_destroy_fbi; |
| } |
| |
| fb = &rfbdev->rfb.base; |
| |
| /* setup helper */ |
| rfbdev->helper.fb = fb; |
| |
| memset_io(rbo->kptr, 0x0, amdgpu_bo_size(rbo)); |
| |
| strcpy(info->fix.id, "amdgpudrmfb"); |
| |
| drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| |
| info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
| info->fbops = &amdgpufb_ops; |
| |
| tmp = amdgpu_bo_gpu_offset(rbo) - adev->mc.vram_start; |
| info->fix.smem_start = adev->mc.aper_base + tmp; |
| info->fix.smem_len = amdgpu_bo_size(rbo); |
| info->screen_base = rbo->kptr; |
| info->screen_size = amdgpu_bo_size(rbo); |
| |
| drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); |
| |
| /* setup aperture base/size for vesafb takeover */ |
| info->apertures->ranges[0].base = adev->ddev->mode_config.fb_base; |
| info->apertures->ranges[0].size = adev->mc.aper_size; |
| |
| /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
| |
| if (info->screen_base == NULL) { |
| ret = -ENOSPC; |
| goto out_destroy_fbi; |
| } |
| |
| DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); |
| DRM_INFO("vram apper at 0x%lX\n", (unsigned long)adev->mc.aper_base); |
| DRM_INFO("size %lu\n", (unsigned long)amdgpu_bo_size(rbo)); |
| DRM_INFO("fb depth is %d\n", fb->depth); |
| DRM_INFO(" pitch is %d\n", fb->pitches[0]); |
| |
| vga_switcheroo_client_fb_set(adev->ddev->pdev, info); |
| return 0; |
| |
| out_destroy_fbi: |
| drm_fb_helper_release_fbi(helper); |
| out_unref: |
| if (rbo) { |
| |
| } |
| if (fb && ret) { |
| drm_gem_object_unreference_unlocked(gobj); |
| drm_framebuffer_unregister_private(fb); |
| drm_framebuffer_cleanup(fb); |
| kfree(fb); |
| } |
| return ret; |
| } |
| |
| void amdgpu_fb_output_poll_changed(struct amdgpu_device *adev) |
| { |
| if (adev->mode_info.rfbdev) |
| drm_fb_helper_hotplug_event(&adev->mode_info.rfbdev->helper); |
| } |
| |
| static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfbdev) |
| { |
| struct amdgpu_framebuffer *rfb = &rfbdev->rfb; |
| |
| drm_fb_helper_unregister_fbi(&rfbdev->helper); |
| drm_fb_helper_release_fbi(&rfbdev->helper); |
| |
| if (rfb->obj) { |
| amdgpufb_destroy_pinned_object(rfb->obj); |
| rfb->obj = NULL; |
| } |
| drm_fb_helper_fini(&rfbdev->helper); |
| drm_framebuffer_unregister_private(&rfb->base); |
| drm_framebuffer_cleanup(&rfb->base); |
| |
| return 0; |
| } |
| |
| /** Sets the color ramps on behalf of fbcon */ |
| static void amdgpu_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
| u16 blue, int regno) |
| { |
| struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc); |
| |
| amdgpu_crtc->lut_r[regno] = red >> 6; |
| amdgpu_crtc->lut_g[regno] = green >> 6; |
| amdgpu_crtc->lut_b[regno] = blue >> 6; |
| } |
| |
| /** Gets the color ramps on behalf of fbcon */ |
| static void amdgpu_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
| u16 *blue, int regno) |
| { |
| struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc); |
| |
| *red = amdgpu_crtc->lut_r[regno] << 6; |
| *green = amdgpu_crtc->lut_g[regno] << 6; |
| *blue = amdgpu_crtc->lut_b[regno] << 6; |
| } |
| |
| static const struct drm_fb_helper_funcs amdgpu_fb_helper_funcs = { |
| .gamma_set = amdgpu_crtc_fb_gamma_set, |
| .gamma_get = amdgpu_crtc_fb_gamma_get, |
| .fb_probe = amdgpufb_create, |
| }; |
| |
| int amdgpu_fbdev_init(struct amdgpu_device *adev) |
| { |
| struct amdgpu_fbdev *rfbdev; |
| int bpp_sel = 32; |
| int ret; |
| |
| /* don't init fbdev on hw without DCE */ |
| if (!adev->mode_info.mode_config_initialized) |
| return 0; |
| |
| /* don't init fbdev if there are no connectors */ |
| if (list_empty(&adev->ddev->mode_config.connector_list)) |
| return 0; |
| |
| /* select 8 bpp console on low vram cards */ |
| if (adev->mc.real_vram_size <= (32*1024*1024)) |
| bpp_sel = 8; |
| |
| rfbdev = kzalloc(sizeof(struct amdgpu_fbdev), GFP_KERNEL); |
| if (!rfbdev) |
| return -ENOMEM; |
| |
| rfbdev->adev = adev; |
| adev->mode_info.rfbdev = rfbdev; |
| |
| drm_fb_helper_prepare(adev->ddev, &rfbdev->helper, |
| &amdgpu_fb_helper_funcs); |
| |
| ret = drm_fb_helper_init(adev->ddev, &rfbdev->helper, |
| adev->mode_info.num_crtc, |
| AMDGPUFB_CONN_LIMIT); |
| if (ret) { |
| kfree(rfbdev); |
| return ret; |
| } |
| |
| drm_fb_helper_single_add_all_connectors(&rfbdev->helper); |
| |
| /* disable all the possible outputs/crtcs before entering KMS mode */ |
| drm_helper_disable_unused_functions(adev->ddev); |
| |
| drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); |
| return 0; |
| } |
| |
| void amdgpu_fbdev_fini(struct amdgpu_device *adev) |
| { |
| if (!adev->mode_info.rfbdev) |
| return; |
| |
| amdgpu_fbdev_destroy(adev->ddev, adev->mode_info.rfbdev); |
| kfree(adev->mode_info.rfbdev); |
| adev->mode_info.rfbdev = NULL; |
| } |
| |
| void amdgpu_fbdev_set_suspend(struct amdgpu_device *adev, int state) |
| { |
| if (adev->mode_info.rfbdev) |
| drm_fb_helper_set_suspend(&adev->mode_info.rfbdev->helper, |
| state); |
| } |
| |
| int amdgpu_fbdev_total_size(struct amdgpu_device *adev) |
| { |
| struct amdgpu_bo *robj; |
| int size = 0; |
| |
| if (!adev->mode_info.rfbdev) |
| return 0; |
| |
| robj = gem_to_amdgpu_bo(adev->mode_info.rfbdev->rfb.obj); |
| size += amdgpu_bo_size(robj); |
| return size; |
| } |
| |
| bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device *adev, struct amdgpu_bo *robj) |
| { |
| if (!adev->mode_info.rfbdev) |
| return false; |
| if (robj == gem_to_amdgpu_bo(adev->mode_info.rfbdev->rfb.obj)) |
| return true; |
| return false; |
| } |
| |
| void amdgpu_fbdev_restore_mode(struct amdgpu_device *adev) |
| { |
| struct amdgpu_fbdev *afbdev = adev->mode_info.rfbdev; |
| struct drm_fb_helper *fb_helper; |
| int ret; |
| |
| if (!afbdev) |
| return; |
| |
| fb_helper = &afbdev->helper; |
| |
| ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); |
| if (ret) |
| DRM_DEBUG("failed to restore crtc mode\n"); |
| } |