/* * 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/async.h>#include <linux/console.h>#include <linux/delay.h>#include <linux/errno.h>#include <linux/init.h>#include <linux/kernel.h>#include <linux/mm.h>#include <linux/module.h>#include <linux/string.h>#include <linux/sysrq.h>#include <linux/tty.h>#include <linux/vga_switcheroo.h> #include <drm/drm_crtc.h>#include <drm/drm_fb_helper.h>#include <drm/drm_fourcc.h>#include <drm/i915_drm.h> #include "i915_drv.h"#include "intel_drv.h"#include "intel_fbdev.h"#include "intel_frontbuffer.h" static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev){ struct drm_i915_gem_object *obj = intel_fb_obj(&ifbdev->fb->base); unsigned int origin = ifbdev->vma_flags & PLANE_HAS_FENCE ? ORIGIN_GTT : ORIGIN_CPU; intel_fb_obj_invalidate(obj, origin);} static int intel_fbdev_set_par(struct fb_info *info){ struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_set_par(info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret;} static int intel_fbdev_blank(int blank, struct fb_info *info){ struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_blank(blank, info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret;} static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, struct fb_info *info){ struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_pan_display(var, info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret;} static struct fb_ops intelfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_set_par = intel_fbdev_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 = intel_fbdev_pan_display, .fb_blank = intel_fbdev_blank,}; static int intelfb_alloc(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes){ struct intel_fbdev *ifbdev = container_of(helper, struct intel_fbdev, helper); struct drm_framebuffer *fb; struct drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = to_i915(dev); 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] = ALIGN(mode_cmd.width * DIV_ROUND_UP(sizes->surface_bpp, 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 = PAGE_ALIGN(size); /* If the FB is too big, just don't use it since fbdev is not very * important and we should probably use that space with FBC or other * features. */ obj = NULL; if (size * 2 < dev_priv->stolen_usable_size) obj = i915_gem_object_create_stolen(dev_priv, size); if (obj == NULL) obj = i915_gem_object_create(dev_priv, size); if (IS_ERR(obj)) { DRM_ERROR("failed to allocate framebuffer\n"); ret = PTR_ERR(obj); goto err; } fb = intel_framebuffer_create(obj, &mode_cmd); if (IS_ERR(fb)) { ret = PTR_ERR(fb); goto err_obj; } ifbdev->fb = to_intel_framebuffer(fb); return 0; err_obj: i915_gem_object_put(obj);err: return ret;} static int intelfb_create(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes){ struct intel_fbdev *ifbdev = container_of(helper, struct intel_fbdev, helper); struct intel_framebuffer *intel_fb = ifbdev->fb; struct drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; struct i915_ggtt *ggtt = &dev_priv->ggtt; const struct i915_ggtt_view view = { .type = I915_GGTT_VIEW_NORMAL, }; struct drm_framebuffer *fb; intel_wakeref_t wakeref; struct fb_info *info; struct i915_vma *vma; unsigned long flags = 0; bool prealloc = false; void __iomem *vaddr; int ret; if (intel_fb && (sizes->fb_width > intel_fb->base.width || sizes->fb_height > intel_fb->base.height)) { DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," " releasing it\n", intel_fb->base.width, intel_fb->base.height, sizes->fb_width, sizes->fb_height); drm_framebuffer_put(&intel_fb->base); intel_fb = ifbdev->fb = NULL; } if (!intel_fb || WARN_ON(!intel_fb_obj(&intel_fb->base))) { DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); ret = intelfb_alloc(helper, sizes); if (ret) return ret; intel_fb = ifbdev->fb; } else { DRM_DEBUG_KMS("re-using BIOS fb\n"); prealloc = true; sizes->fb_width = intel_fb->base.width; sizes->fb_height = intel_fb->base.height; } mutex_lock(&dev->struct_mutex); wakeref = intel_runtime_pm_get(dev_priv); /* Pin the GGTT vma for our access via info->screen_base. * This also validates that any existing fb inherited from the * BIOS is suitable for own access. */ vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, &view, false, &flags); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto out_unlock; } fb = &ifbdev->fb->base; intel_fb_obj_flush(intel_fb_obj(fb), ORIGIN_DIRTYFB); info = drm_fb_helper_alloc_fbi(helper); if (IS_ERR(info)) { DRM_ERROR("Failed to allocate fb_info\n"); ret = PTR_ERR(info); goto out_unpin; } ifbdev->helper.fb = fb; info->fbops = &intelfb_ops; /* setup aperture base/size for vesafb takeover */ info->apertures->ranges[0].base = dev->mode_config.fb_base; info->apertures->ranges[0].size = ggtt->mappable_end; info->fix.smem_start = dev->mode_config.fb_base + i915_ggtt_offset(vma); info->fix.smem_len = vma->node.size; vaddr = i915_vma_pin_iomap(vma); if (IS_ERR(vaddr)) { DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); ret = PTR_ERR(vaddr); goto out_unpin; } info->screen_base = vaddr; info->screen_size = vma->node.size; drm_fb_helper_fill_info(info, &ifbdev->helper, sizes); /* If the object is shmemfs backed, it will have given us zeroed pages. * If the object is stolen however, it will be full of whatever * garbage was left in there. */ if (intel_fb_obj(fb)->stolen && !prealloc) memset_io(info->screen_base, 0, info->screen_size); /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n", fb->width, fb->height, i915_ggtt_offset(vma)); ifbdev->vma = vma; ifbdev->vma_flags = flags; intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); vga_switcheroo_client_fb_set(pdev, info); return 0; out_unpin: intel_unpin_fb_vma(vma, flags);out_unlock: intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); return ret;} static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { .fb_probe = intelfb_create,}; static void intel_fbdev_destroy(struct intel_fbdev *ifbdev){ /* We rely on the object-free to release the VMA pinning for * the info->screen_base mmaping. Leaking the VMA is simpler than * trying to rectify all the possible error paths leading here. */ drm_fb_helper_fini(&ifbdev->helper); if (ifbdev->vma) { mutex_lock(&ifbdev->helper.dev->struct_mutex); intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); mutex_unlock(&ifbdev->helper.dev->struct_mutex); } if (ifbdev->fb) drm_framebuffer_remove(&ifbdev->fb->base); kfree(ifbdev);} /* * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. * The core display code will have read out the current plane configuration, * so we use that to figure out if there's an object for us to use as the * fb, and if so, we re-use it for the fbdev configuration. * * Note we only support a single fb shared across pipes for boot (mostly for * fbcon), so we just find the biggest and use that. */static bool intel_fbdev_init_bios(struct drm_device *dev, struct intel_fbdev *ifbdev){ struct intel_framebuffer *fb = NULL; struct drm_crtc *crtc; struct intel_crtc *intel_crtc; unsigned int max_size = 0; /* Find the largest fb */ for_each_crtc(dev, crtc) { struct drm_i915_gem_object *obj = intel_fb_obj(crtc->primary->state->fb); intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active || !obj) { DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", pipe_name(intel_crtc->pipe)); continue; } if (obj->base.size > max_size) { DRM_DEBUG_KMS("found possible fb from plane %c\n", pipe_name(intel_crtc->pipe)); fb = to_intel_framebuffer(crtc->primary->state->fb); max_size = obj->base.size; } } if (!fb) { DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); goto out; } /* Now make sure all the pipes will fit into it */ for_each_crtc(dev, crtc) { unsigned int cur_size; intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active) { DRM_DEBUG_KMS("pipe %c not active, skipping\n", pipe_name(intel_crtc->pipe)); continue; } DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", pipe_name(intel_crtc->pipe)); /* * See if the plane fb we found above will fit on this * pipe. Note we need to use the selected fb's pitch and bpp * rather than the current pipe's, since they differ. */ cur_size = crtc->state->adjusted_mode.crtc_hdisplay; cur_size = cur_size * fb->base.format->cpp[0]; if (fb->base.pitches[0] < cur_size) { DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", pipe_name(intel_crtc->pipe), cur_size, fb->base.pitches[0]); fb = NULL; break; } cur_size = crtc->state->adjusted_mode.crtc_vdisplay; cur_size = intel_fb_align_height(&fb->base, 0, cur_size); cur_size *= fb->base.pitches[0]; DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", pipe_name(intel_crtc->pipe), crtc->state->adjusted_mode.crtc_hdisplay, crtc->state->adjusted_mode.crtc_vdisplay, fb->base.format->cpp[0] * 8, cur_size); if (cur_size > max_size) { DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", pipe_name(intel_crtc->pipe), cur_size, max_size); fb = NULL; break; } DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", pipe_name(intel_crtc->pipe), max_size, cur_size); } if (!fb) { DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); goto out; } ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8; ifbdev->fb = fb; drm_framebuffer_get(&ifbdev->fb->base); /* Final pass to check if any active pipes don't have fbs */ for_each_crtc(dev, crtc) { intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active) continue; WARN(!crtc->primary->state->fb, "re-used BIOS config but lost an fb on crtc %d\n", crtc->base.id); } DRM_DEBUG_KMS("using BIOS fb for initial console\n"); return true; out: return false;} static void intel_fbdev_suspend_worker(struct work_struct *work){ intel_fbdev_set_suspend(&container_of(work, struct drm_i915_private, fbdev_suspend_work)->drm, FBINFO_STATE_RUNNING, true);} int intel_fbdev_init(struct drm_device *dev){ struct drm_i915_private *dev_priv = to_i915(dev); struct intel_fbdev *ifbdev; int ret; if (WARN_ON(!HAS_DISPLAY(dev_priv))) return -ENODEV; ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); if (ifbdev == NULL) return -ENOMEM; mutex_init(&ifbdev->hpd_lock); drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); if (!intel_fbdev_init_bios(dev, ifbdev)) ifbdev->preferred_bpp = 32; ret = drm_fb_helper_init(dev, &ifbdev->helper, 4); if (ret) { kfree(ifbdev); return ret; } dev_priv->fbdev = ifbdev; INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); drm_fb_helper_single_add_all_connectors(&ifbdev->helper); return 0;} static void intel_fbdev_initial_config(void *data, async_cookie_t cookie){ struct intel_fbdev *ifbdev = data; /* Due to peculiar init order wrt to hpd handling this is separate. */ if (drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp)) intel_fbdev_unregister(to_i915(ifbdev->helper.dev));} void intel_fbdev_initial_config_async(struct drm_device *dev){ struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; if (!ifbdev) return; ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev);} Lines 1–500 of 640. Load more
/* * 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/async.h> #include <linux/console.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/string.h> #include <linux/sysrq.h> #include <linux/tty.h> #include <linux/vga_switcheroo.h> #include <drm/drm_crtc.h> #include <drm/drm_fb_helper.h> #include <drm/drm_fourcc.h> #include <drm/i915_drm.h> #include "i915_drv.h" #include "intel_drv.h" #include "intel_fbdev.h" #include "intel_frontbuffer.h" static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev) { struct drm_i915_gem_object *obj = intel_fb_obj(&ifbdev->fb->base); unsigned int origin = ifbdev->vma_flags & PLANE_HAS_FENCE ? ORIGIN_GTT : ORIGIN_CPU; intel_fb_obj_invalidate(obj, origin); } static int intel_fbdev_set_par(struct fb_info *info) { struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_set_par(info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret; } static int intel_fbdev_blank(int blank, struct fb_info *info) { struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_blank(blank, info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret; } static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { struct drm_fb_helper *fb_helper = info->par; struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); int ret; ret = drm_fb_helper_pan_display(var, info); if (ret == 0) intel_fbdev_invalidate(ifbdev); return ret; } static struct fb_ops intelfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_set_par = intel_fbdev_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 = intel_fbdev_pan_display, .fb_blank = intel_fbdev_blank, }; static int intelfb_alloc(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { struct intel_fbdev *ifbdev = container_of(helper, struct intel_fbdev, helper); struct drm_framebuffer *fb; struct drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = to_i915(dev); 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] = ALIGN(mode_cmd.width * DIV_ROUND_UP(sizes->surface_bpp, 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 = PAGE_ALIGN(size); /* If the FB is too big, just don't use it since fbdev is not very * important and we should probably use that space with FBC or other * features. */ obj = NULL; if (size * 2 < dev_priv->stolen_usable_size) obj = i915_gem_object_create_stolen(dev_priv, size); if (obj == NULL) obj = i915_gem_object_create(dev_priv, size); if (IS_ERR(obj)) { DRM_ERROR("failed to allocate framebuffer\n"); ret = PTR_ERR(obj); goto err; } fb = intel_framebuffer_create(obj, &mode_cmd); if (IS_ERR(fb)) { ret = PTR_ERR(fb); goto err_obj; } ifbdev->fb = to_intel_framebuffer(fb); return 0; err_obj: i915_gem_object_put(obj); err: return ret; } static int intelfb_create(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { struct intel_fbdev *ifbdev = container_of(helper, struct intel_fbdev, helper); struct intel_framebuffer *intel_fb = ifbdev->fb; struct drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; struct i915_ggtt *ggtt = &dev_priv->ggtt; const struct i915_ggtt_view view = { .type = I915_GGTT_VIEW_NORMAL, }; struct drm_framebuffer *fb; intel_wakeref_t wakeref; struct fb_info *info; struct i915_vma *vma; unsigned long flags = 0; bool prealloc = false; void __iomem *vaddr; int ret; if (intel_fb && (sizes->fb_width > intel_fb->base.width || sizes->fb_height > intel_fb->base.height)) { DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," " releasing it\n", intel_fb->base.width, intel_fb->base.height, sizes->fb_width, sizes->fb_height); drm_framebuffer_put(&intel_fb->base); intel_fb = ifbdev->fb = NULL; } if (!intel_fb || WARN_ON(!intel_fb_obj(&intel_fb->base))) { DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); ret = intelfb_alloc(helper, sizes); if (ret) return ret; intel_fb = ifbdev->fb; } else { DRM_DEBUG_KMS("re-using BIOS fb\n"); prealloc = true; sizes->fb_width = intel_fb->base.width; sizes->fb_height = intel_fb->base.height; } mutex_lock(&dev->struct_mutex); wakeref = intel_runtime_pm_get(dev_priv); /* Pin the GGTT vma for our access via info->screen_base. * This also validates that any existing fb inherited from the * BIOS is suitable for own access. */ vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, &view, false, &flags); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto out_unlock; } fb = &ifbdev->fb->base; intel_fb_obj_flush(intel_fb_obj(fb), ORIGIN_DIRTYFB); info = drm_fb_helper_alloc_fbi(helper); if (IS_ERR(info)) { DRM_ERROR("Failed to allocate fb_info\n"); ret = PTR_ERR(info); goto out_unpin; } ifbdev->helper.fb = fb; info->fbops = &intelfb_ops; /* setup aperture base/size for vesafb takeover */ info->apertures->ranges[0].base = dev->mode_config.fb_base; info->apertures->ranges[0].size = ggtt->mappable_end; info->fix.smem_start = dev->mode_config.fb_base + i915_ggtt_offset(vma); info->fix.smem_len = vma->node.size; vaddr = i915_vma_pin_iomap(vma); if (IS_ERR(vaddr)) { DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); ret = PTR_ERR(vaddr); goto out_unpin; } info->screen_base = vaddr; info->screen_size = vma->node.size; drm_fb_helper_fill_info(info, &ifbdev->helper, sizes); /* If the object is shmemfs backed, it will have given us zeroed pages. * If the object is stolen however, it will be full of whatever * garbage was left in there. */ if (intel_fb_obj(fb)->stolen && !prealloc) memset_io(info->screen_base, 0, info->screen_size); /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n", fb->width, fb->height, i915_ggtt_offset(vma)); ifbdev->vma = vma; ifbdev->vma_flags = flags; intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); vga_switcheroo_client_fb_set(pdev, info); return 0; out_unpin: intel_unpin_fb_vma(vma, flags); out_unlock: intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); return ret; } static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { .fb_probe = intelfb_create, }; static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) { /* We rely on the object-free to release the VMA pinning for * the info->screen_base mmaping. Leaking the VMA is simpler than * trying to rectify all the possible error paths leading here. */ drm_fb_helper_fini(&ifbdev->helper); if (ifbdev->vma) { mutex_lock(&ifbdev->helper.dev->struct_mutex); intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); mutex_unlock(&ifbdev->helper.dev->struct_mutex); } if (ifbdev->fb) drm_framebuffer_remove(&ifbdev->fb->base); kfree(ifbdev); } /* * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. * The core display code will have read out the current plane configuration, * so we use that to figure out if there's an object for us to use as the * fb, and if so, we re-use it for the fbdev configuration. * * Note we only support a single fb shared across pipes for boot (mostly for * fbcon), so we just find the biggest and use that. */ static bool intel_fbdev_init_bios(struct drm_device *dev, struct intel_fbdev *ifbdev) { struct intel_framebuffer *fb = NULL; struct drm_crtc *crtc; struct intel_crtc *intel_crtc; unsigned int max_size = 0; /* Find the largest fb */ for_each_crtc(dev, crtc) { struct drm_i915_gem_object *obj = intel_fb_obj(crtc->primary->state->fb); intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active || !obj) { DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", pipe_name(intel_crtc->pipe)); continue; } if (obj->base.size > max_size) { DRM_DEBUG_KMS("found possible fb from plane %c\n", pipe_name(intel_crtc->pipe)); fb = to_intel_framebuffer(crtc->primary->state->fb); max_size = obj->base.size; } } if (!fb) { DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); goto out; } /* Now make sure all the pipes will fit into it */ for_each_crtc(dev, crtc) { unsigned int cur_size; intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active) { DRM_DEBUG_KMS("pipe %c not active, skipping\n", pipe_name(intel_crtc->pipe)); continue; } DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", pipe_name(intel_crtc->pipe)); /* * See if the plane fb we found above will fit on this * pipe. Note we need to use the selected fb's pitch and bpp * rather than the current pipe's, since they differ. */ cur_size = crtc->state->adjusted_mode.crtc_hdisplay; cur_size = cur_size * fb->base.format->cpp[0]; if (fb->base.pitches[0] < cur_size) { DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", pipe_name(intel_crtc->pipe), cur_size, fb->base.pitches[0]); fb = NULL; break; } cur_size = crtc->state->adjusted_mode.crtc_vdisplay; cur_size = intel_fb_align_height(&fb->base, 0, cur_size); cur_size *= fb->base.pitches[0]; DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", pipe_name(intel_crtc->pipe), crtc->state->adjusted_mode.crtc_hdisplay, crtc->state->adjusted_mode.crtc_vdisplay, fb->base.format->cpp[0] * 8, cur_size); if (cur_size > max_size) { DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", pipe_name(intel_crtc->pipe), cur_size, max_size); fb = NULL; break; } DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", pipe_name(intel_crtc->pipe), max_size, cur_size); } if (!fb) { DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); goto out; } ifbdev->preferred_bpp = fb->base.format->cpp[0] * 8; ifbdev->fb = fb; drm_framebuffer_get(&ifbdev->fb->base); /* Final pass to check if any active pipes don't have fbs */ for_each_crtc(dev, crtc) { intel_crtc = to_intel_crtc(crtc); if (!crtc->state->active) continue; WARN(!crtc->primary->state->fb, "re-used BIOS config but lost an fb on crtc %d\n", crtc->base.id); } DRM_DEBUG_KMS("using BIOS fb for initial console\n"); return true; out: return false; } static void intel_fbdev_suspend_worker(struct work_struct *work) { intel_fbdev_set_suspend(&container_of(work, struct drm_i915_private, fbdev_suspend_work)->drm, FBINFO_STATE_RUNNING, true); } int intel_fbdev_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct intel_fbdev *ifbdev; int ret; if (WARN_ON(!HAS_DISPLAY(dev_priv))) return -ENODEV; ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); if (ifbdev == NULL) return -ENOMEM; mutex_init(&ifbdev->hpd_lock); drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); if (!intel_fbdev_init_bios(dev, ifbdev)) ifbdev->preferred_bpp = 32; ret = drm_fb_helper_init(dev, &ifbdev->helper, 4); if (ret) { kfree(ifbdev); return ret; } dev_priv->fbdev = ifbdev; INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); drm_fb_helper_single_add_all_connectors(&ifbdev->helper); return 0; } static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) { struct intel_fbdev *ifbdev = data; /* Due to peculiar init order wrt to hpd handling this is separate. */ if (drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp)) intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); } void intel_fbdev_initial_config_async(struct drm_device *dev) { struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; if (!ifbdev) return; ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); }