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Subject[080/151] drm/radeon/kms: rs6xx/rs740: clamp vram to aperture size
2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Alex Deucher <alexdeucher@gmail.com>

commit 0088dbdb809e8799cb8f26da5ac64b15201fa99d upstream.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/gpu/drm/radeon/rs600.c | 9 ++++++---
drivers/gpu/drm/radeon/rs690.c | 9 ++++++++-
2 files changed, 14 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -301,9 +301,7 @@ int rs600_mc_wait_for_idle(struct radeon

void rs600_gpu_init(struct radeon_device *rdev)
{
- /* FIXME: HDP same place on rs600 ? */
r100_hdp_reset(rdev);
- /* FIXME: is this correct ? */
r420_pipes_init(rdev);
/* Wait for mc idle */
if (rs600_mc_wait_for_idle(rdev))
@@ -312,7 +310,6 @@ void rs600_gpu_init(struct radeon_device

void rs600_vram_info(struct radeon_device *rdev)
{
- /* FIXME: to do or is these values sane ? */
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;

@@ -321,6 +318,12 @@ void rs600_vram_info(struct radeon_devic

rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
+
+ if (rdev->mc.mc_vram_size > rdev->mc.aper_size)
+ rdev->mc.mc_vram_size = rdev->mc.aper_size;
+
+ if (rdev->mc.real_vram_size > rdev->mc.aper_size)
+ rdev->mc.real_vram_size = rdev->mc.aper_size;
}

void rs600_bandwidth_update(struct radeon_device *rdev)
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -134,7 +134,7 @@ void rs690_vram_info(struct radeon_devic
fixed20_12 a;

rs400_gart_adjust_size(rdev);
- /* DDR for all card after R300 & IGP */
+
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;

@@ -143,6 +143,13 @@ void rs690_vram_info(struct radeon_devic

rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
+
+ if (rdev->mc.mc_vram_size > rdev->mc.aper_size)
+ rdev->mc.mc_vram_size = rdev->mc.aper_size;
+
+ if (rdev->mc.real_vram_size > rdev->mc.aper_size)
+ rdev->mc.real_vram_size = rdev->mc.aper_size;
+
rs690_pm_info(rdev);
/* FIXME: we should enforce default clock in case GPU is not in
* default setup



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