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authorChris Wilson <chris@chris-wilson.co.uk>2016-08-15 12:49:07 +0300
committerChris Wilson <chris@chris-wilson.co.uk>2016-08-15 13:01:14 +0300
commitbde13ebdab0778b758b267ff9e38d6c10a42bdc3 (patch)
treedbfb577c81b1a7d2e8b4ffb74d319cc66406c014 /drivers/gpu/drm/i915/intel_fbdev.c
parent058d88c4330f963033a5d11b269c8f86677494d1 (diff)
downloadlinux-bde13ebdab0778b758b267ff9e38d6c10a42bdc3.tar.xz
drm/i915: Introduce i915_ggtt_offset()
This little helper only exists to safely discard the upper unused 32bits of the general 64-bit VMA address - as we know that all Global GTT currently are less than 4GiB in size and so that the upper bits must be zero. In many places, we use a u32 for the global GTT offset and we want to document where we are discarding the full VMA offset. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1471254551-25805-28-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_fbdev.c')
-rw-r--r--drivers/gpu/drm/i915/intel_fbdev.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index 096e84dabace..4003e4908c09 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -248,7 +248,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
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 + vma->node.start;
+ 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);
@@ -275,8 +275,8 @@ static int intelfb_create(struct drm_fb_helper *helper,
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
- DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx\n",
- fb->width, fb->height, vma->node.start);
+ DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n",
+ fb->width, fb->height, i915_ggtt_offset(vma));
ifbdev->vma = vma;
mutex_unlock(&dev->struct_mutex);