/* * 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/pm_runtime.h> #include <drm/drmP.h> #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <drm/radeon_drm.h> #include "radeon.h" #include <drm/drm_fb_helper.h> #include <linux/vga_switcheroo.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; struct radeon_framebuffer rfb; 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 struct fb_ops radeonfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = radeonfb_open, .fb_release = radeonfb_release, .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_unlocked(gobj); } static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **gobj_p) { 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; cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 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; 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_fbi(helper); if (IS_ERR(info)) { ret = PTR_ERR(info); goto out; } info->par = rfbdev; info->skip_vt_switch = true; ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); if (ret) { DRM_ERROR("failed to initialize framebuffer %d\n", ret); goto out; } fb = &rfbdev->rfb.base; /* setup helper */ rfbdev->helper.fb = fb; memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); strcpy(info->fix.id, "radeondrmfb"); drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth); 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_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); /* 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; } void radeon_fb_output_poll_changed(struct radeon_device *rdev) { if (rdev->mode_info.rfbdev) drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); } static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) { struct radeon_framebuffer *rfb = &rfbdev->rfb; drm_fb_helper_unregister_fbi(&rfbdev->helper); if (rfb->obj) { radeonfb_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; } 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, &radeon_fb_helper_funcs); ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, RADEONFB_CONN_LIMIT); if (ret) goto free; ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); if (ret) goto fini; /* 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, bpp_sel); if (ret) goto fini; return 0; fini: drm_fb_helper_fini(&rfbdev->helper); free: 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); 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->rfb.obj)) return true; return false; } void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) { if (rdev->mode_info.rfbdev) drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); } void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) { if (rdev->mode_info.rfbdev) drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); } void radeon_fbdev_restore_mode(struct radeon_device *rdev) { struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev; struct drm_fb_helper *fb_helper; int ret; if (!rfbdev) return; fb_helper = &rfbdev->helper; ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); if (ret) DRM_DEBUG("failed to restore crtc mode\n"); }