Change-Id: If00d5b97ba9e30f9b7f68fdfc134a0f8b3ad2add
Signed-off-by: Ken Wang <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 7 ++++++-
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 7 ++++++-
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index a3b6048..0b095d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -336,6 +336,11 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev)
{
u32 tmp;
int chansize, numchan;
+ u64 sysmem_size;
+ struct sysinfo si;
+
+ si_meminfo(&si);
+ sysmem_size = si.totalram * si.mem_unit;
/* Get VRAM informations */
tmp = RREG32(mmMC_ARB_RAMCFG);
@@ -392,7 +397,7 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev)
* size equal to the 1024 or vram, whichever is larger.
*/
if (amdgpu_gart_size == -1)
- adev->mc.gtt_size = max((1024ULL << 20), adev->mc.mc_vram_size);
+ adev->mc.gtt_size = max((1024ULL << 20),
min(adev->mc.mc_vram_size, sysmem_size/2));
else
adev->mc.gtt_size = (uint64_t)amdgpu_gart_size << 20;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 02b6872..790bf7a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -413,6 +413,11 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
{
u32 tmp;
int chansize, numchan;
+ u64 sysmem_size;
+ struct sysinfo si;
+
+ si_meminfo(&si);
+ sysmem_size = si.totalram * si.mem_unit;
/* Get VRAM informations */
tmp = RREG32(mmMC_ARB_RAMCFG);
@@ -469,7 +474,7 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
* size equal to the 1024 or vram, whichever is larger.
*/
if (amdgpu_gart_size == -1)
- adev->mc.gtt_size = max((1024ULL << 20), adev->mc.mc_vram_size);
+ adev->mc.gtt_size = max((1024ULL << 20),
min(adev->mc.mc_vram_size, sysmem_size/2));
else
adev->mc.gtt_size = (uint64_t)amdgpu_gart_size << 20;
--
2.7.4
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