From 8b4f49e03901e82898540bd1189333edf9588d74 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Mon, 25 Nov 2013 15:51:16 -0800 Subject: [PATCH] drm/i915: split fb allocation and initialization v2 If we use a stolen buffer, our probe callback shouldn't allocate a new buffer; we should re-use the one from the BIOS instead if possible. v2: fix locking (Jesse) Reviewed-by: Chris Wilson Signed-off-by: Jesse Barnes Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_fbdev.c | 62 ++++++++++++++++++++++-------- 1 file changed, 46 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index 895fcb4fbd94..fdb6dc92a7ab 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -57,18 +57,14 @@ static struct fb_ops intelfb_ops = { .fb_debug_leave = drm_fb_helper_debug_leave, }; -static int intelfb_create(struct drm_fb_helper *helper, - struct drm_fb_helper_surface_size *sizes) +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_device *dev = helper->dev; - struct drm_i915_private *dev_priv = dev->dev_private; - struct fb_info *info; - struct drm_framebuffer *fb; struct drm_mode_fb_cmd2 mode_cmd = {}; struct drm_i915_gem_object *obj; - struct device *device = &dev->pdev->dev; int size, ret; /* we don't do packed 24bpp */ @@ -94,8 +90,6 @@ static int intelfb_create(struct drm_fb_helper *helper, goto out; } - mutex_lock(&dev->struct_mutex); - /* Flush everything out, we'll be doing GTT only from now on */ ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); if (ret) { @@ -103,7 +97,49 @@ static int intelfb_create(struct drm_fb_helper *helper, goto out_unref; } - info = framebuffer_alloc(0, device); + ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); + if (ret) + goto out_unpin; + + return 0; + +out_unpin: + i915_gem_object_unpin(obj); +out_unref: + drm_gem_object_unreference(&obj->base); +out: + 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->ifb; + struct drm_device *dev = helper->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct fb_info *info; + struct drm_framebuffer *fb; + struct drm_i915_gem_object *obj; + int size, ret; + + mutex_lock(&dev->struct_mutex); + + if (!intel_fb->obj) { + DRM_ERROR("no BIOS fb, allocating a new one\n"); + ret = intelfb_alloc(helper, sizes); + if (ret) + goto out_unlock; + } else { + sizes->fb_width = intel_fb->base.width; + sizes->fb_height = intel_fb->base.height; + } + + obj = intel_fb->obj; + size = obj->base.size; + + info = framebuffer_alloc(0, &dev->pdev->dev); if (!info) { ret = -ENOMEM; goto out_unpin; @@ -111,10 +147,6 @@ static int intelfb_create(struct drm_fb_helper *helper, info->par = helper; - ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); - if (ret) - goto out_unpin; - fb = &ifbdev->ifb.base; ifbdev->helper.fb = fb; @@ -170,17 +202,15 @@ static int intelfb_create(struct drm_fb_helper *helper, fb->width, fb->height, i915_gem_obj_ggtt_offset(obj), obj); - mutex_unlock(&dev->struct_mutex); vga_switcheroo_client_fb_set(dev->pdev, info); return 0; out_unpin: i915_gem_object_unpin(obj); -out_unref: drm_gem_object_unreference(&obj->base); +out_unlock: mutex_unlock(&dev->struct_mutex); -out: return ret; } -- GitLab