Be more explicit and add comments explaining each case.
Also s/gart/GART/ in the parameter string as per Felix'
suggestion.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 38 +++++++++++++++++++++++++++-----
2 files changed, 33 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 7d5b008..21116fc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -129,7 +129,7 @@ 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)");
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index b9b9f68..2027eb0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -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;
}
--
2.5.5
