From: Christian König <christian.koenig@xxxxxxx>
Limit the default GART size and save a lot of VRAM.
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 12 +++++-------
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 +++---
drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 9 +--------
4 files changed, 10 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 94bbf71..2421b6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -76,7 +76,7 @@
*/
extern int amdgpu_modeset;
extern int amdgpu_vram_limit;
-extern int amdgpu_gart_size;
+extern unsigned amdgpu_gart_size;
extern int amdgpu_gtt_size;
extern int amdgpu_moverate;
extern int amdgpu_benchmarking;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8ef7e5e..7a90dec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1128,13 +1128,11 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
}
- if (amdgpu_gart_size != -1) {
- /* gtt size must be greater or equal to 32M */
- if (amdgpu_gart_size < 32) {
- dev_warn(adev->dev, "gart size (%d) too small\n",
- amdgpu_gart_size);
- amdgpu_gart_size = -1;
- }
+ if (amdgpu_gart_size < 32) {
+ /* gart size must be greater or equal to 32M */
+ dev_warn(adev->dev, "gart size (%d) too small\n",
+ amdgpu_gart_size);
+ amdgpu_gart_size = 32;
}
if (amdgpu_gtt_size != -1 && amdgpu_gtt_size < 32) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index b7c6cee..559e092 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -74,7 +74,7 @@
#define KMS_DRIVER_PATCHLEVEL 0
int amdgpu_vram_limit = 0;
-int amdgpu_gart_size = -1; /* auto */
+unsigned amdgpu_gart_size = 256;
int amdgpu_gtt_size = -1; /* auto */
int amdgpu_moverate = -1; /* auto */
int amdgpu_benchmarking = 0;
@@ -122,8 +122,8 @@ int amdgpu_lbpw = -1;
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
-MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc., -1 = auto)");
-module_param_named(gartsize, amdgpu_gart_size, int, 0600);
+MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc.)");
+module_param_named(gartsize, amdgpu_gart_size, uint, 0600);
MODULE_PARM_DESC(gttsize, "Size of the GTT domain in megabytes (-1 = auto)");
module_param_named(gttsize, amdgpu_gtt_size, int, 0600);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index cb0814a..124b237 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -62,14 +62,7 @@
*/
void amdgpu_gart_set_defaults(struct amdgpu_device *adev)
{
- /* unless the user had overridden it, set the gart
- * size equal to the 1024 or vram, whichever is larger.
- */
- if (amdgpu_gart_size == -1)
- adev->mc.gart_size = max((AMDGPU_DEFAULT_GTT_SIZE_MB << 20),
- adev->mc.mc_vram_size);
- else
- adev->mc.gart_size = (uint64_t)amdgpu_gart_size << 20;
+ adev->mc.gart_size = (uint64_t)amdgpu_gart_size << 20;
}
/**
--
2.7.4
