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drm/amdgpu: refine default gart size

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Be more explicit and add comments explaining each case.
Also s/gart/GART/ in the parameter string as per Felix'
suggestion.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-08-22 12:21:07 -04:00
parent 84d43463a2
commit a4da14cc62
2 changed files with 33 additions and 7 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -128,7 +128,7 @@ module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
MODULE_PARM_DESC(vis_vramlimit, "Restrict visible VRAM for testing, in megabytes");
module_param_named(vis_vramlimit, amdgpu_vis_vram_limit, int, 0444);
MODULE_PARM_DESC(gartsize, "Size of gart to setup in megabytes (32, 64, etc., -1=auto)");
MODULE_PARM_DESC(gartsize, "Size of GART to setup in megabytes (32, 64, etc., -1=auto)");
module_param_named(gartsize, amdgpu_gart_size, uint, 0600);
MODULE_PARM_DESC(gttsize, "Size of the GTT domain in megabytes (-1 = auto)");

38
drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
View File

@ -68,13 +68,39 @@ void amdgpu_gart_set_defaults(struct amdgpu_device *adev)
u64 gart_size;
if (amdgpu_gart_size == -1) {
/* make the GART larger for chips that
* dont' support VM for all rings
*/
if (adev->asic_type <= CHIP_STONEY)
gart_size = 1024;
else
switch (adev->asic_type) {
#ifdef CONFIG_DRM_AMDGPU_SI
case CHIP_HAINAN: /* no MM engines */
#endif
case CHIP_TOPAZ: /* no MM engines */
case CHIP_POLARIS11: /* all engines support GPUVM */
case CHIP_POLARIS10: /* all engines support GPUVM */
case CHIP_POLARIS12: /* all engines support GPUVM */
case CHIP_VEGA10: /* all engines support GPUVM */
default:
gart_size = 256;
break;
#ifdef CONFIG_DRM_AMDGPU_SI
case CHIP_VERDE: /* UVD, VCE do not support GPUVM */
case CHIP_TAHITI: /* UVD, VCE do not support GPUVM */
case CHIP_PITCAIRN: /* UVD, VCE do not support GPUVM */
case CHIP_OLAND: /* UVD, VCE do not support GPUVM */
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
case CHIP_BONAIRE: /* UVD, VCE do not support GPUVM */
case CHIP_HAWAII: /* UVD, VCE do not support GPUVM */
case CHIP_KAVERI: /* UVD, VCE do not support GPUVM */
case CHIP_KABINI: /* UVD, VCE do not support GPUVM */
case CHIP_MULLINS: /* UVD, VCE do not support GPUVM */
#endif
case CHIP_TONGA: /* UVD, VCE do not support GPUVM */
case CHIP_FIJI: /* UVD, VCE do not support GPUVM */
case CHIP_CARRIZO: /* UVD, VCE do not support GPUVM, DCE SG support */
case CHIP_STONEY: /* UVD does not support GPUVM, DCE SG support */
case CHIP_RAVEN: /* DCE SG support */
gart_size = 1024;
break;
}
} else {
gart_size = amdgpu_gart_size;
}