From 2cf10d23dff547d6018673a30e86490a768b3280 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 5 Jul 2011 15:36:07 +0100 Subject: [PATCH] gma500: Use the GEM tweaks to provide a GEM frame buffer We can now make our system frame buffer a GEM object. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/staging/gma500/psb_fb.c | 11 +++++++---- drivers/staging/gma500/psb_gem.c | 11 ++++++++--- 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/staging/gma500/psb_fb.c b/drivers/staging/gma500/psb_fb.c index fb75aba20823..400dbee83a4a 100644 --- a/drivers/staging/gma500/psb_fb.c +++ b/drivers/staging/gma500/psb_fb.c @@ -186,6 +186,8 @@ static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) struct psb_framebuffer *psbfb = vma->vm_private_data; struct drm_device *dev = psbfb->base.dev; struct drm_psb_private *dev_priv = dev->dev_private; + + /* FIXME: assumes fb at stolen base which may not be true */ unsigned long phys_addr = (unsigned long)dev_priv->stolen_base; page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; @@ -381,8 +383,11 @@ static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) struct gtt_range *backing; /* Begin by trying to use stolen memory backing */ backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1); - if (backing) - return backing; + if (backing) { + if (drm_gem_private_object_init(dev, &backing->gem, aligned_size) == 0) + return backing; + psb_gtt_free_range(dev, backing); + } /* Next try using GEM host memory */ backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0); if (backing == NULL) @@ -683,8 +688,6 @@ static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, { struct psb_framebuffer *psbfb = to_psb_fb(fb); struct gtt_range *r = psbfb->gtt; - if (r->stolen) - return -EOPNOTSUPP; return drm_gem_handle_create(file_priv, &r->gem, handle); } diff --git a/drivers/staging/gma500/psb_gem.c b/drivers/staging/gma500/psb_gem.c index 7f6f479ff57a..4aec38cb59ef 100644 --- a/drivers/staging/gma500/psb_gem.c +++ b/drivers/staging/gma500/psb_gem.c @@ -49,7 +49,7 @@ void psb_gem_free_object(struct drm_gem_object *obj) kfree(list->map); list->map = NULL; } - drm_gem_object_release(obj); + drm_gem_object_release_wrap(obj); /* This must occur last as it frees up the memory of the GEM object */ psb_gtt_free_range(obj->dev, gtt); } @@ -268,9 +268,11 @@ int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) unsigned long pfn; pgoff_t page_offset; struct drm_device *dev; + struct drm_psb_private *dev_priv; obj = vma->vm_private_data; /* GEM object */ dev = obj->dev; + dev_priv = dev->dev_private; r = container_of(obj, struct gtt_range, gem); /* Get the gtt range */ @@ -294,8 +296,11 @@ int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) page_offset = ((unsigned long) vmf->virtual_address - vma->vm_start) >> PAGE_SHIFT; - /* CPU view of the page, don't go via the GART for CPU writes */ - pfn = page_to_phys(r->pages[page_offset]) >> PAGE_SHIFT; + /* CPU view of the page, don't go via the GART for CPU writes */ + if (r->stolen) + pfn = (dev_priv->stolen_base + r->offset) >> PAGE_SHIFT; + else + pfn = page_to_pfn(r->pages[page_offset]); ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); fail: -- 2.20.1