drm/radeon/kms: MC setup changes for fusion APUs
- CONFIG_MEMSIZE is in bytes on fusion.
- FB_BASE and FB_TOP are finer grained.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index e9b262f..090f747 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1940,9 +1940,15 @@
rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
/* Setup GPU memory space */
- /* size in MB on evergreen */
- rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
- rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+ if (rdev->flags & RADEON_IS_IGP) {
+ /* size in bytes on fusion */
+ rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
+ rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
+ } else {
+ /* size in MB on evergreen */
+ rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+ rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+ }
rdev->mc.visible_vram_size = rdev->mc.aper_size;
rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
r700_vram_gtt_location(rdev, &rdev->mc);