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drm/amdgpu: change gartsize default to 256MB 

Limit the default GART size and save a lot of VRAM.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Christian König 2017-07-07 13:44:05 +02:00 committed by Alex Deucher
parent 36d3837266
commit f9321cc440
4 changed files with 10 additions and 19 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -75,7 +75,7 @@
*/
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;

12
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -1132,13 +1132,11 @@ 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) {

6
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -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;
@ -121,8 +121,8 @@ 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);

9
drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
View File

@ -65,14 +65,7 @@
*/
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;
}
/**