On 10/12/2018 03:39 PM, Christian König wrote:
Am 12.10.2018 um 05:21 schrieb Emily Deng:
For sriov, when first run windows guest, then run linux guest, the gds
vmid0 size will be reset to 0 by windows guest. So if the value has been
reset to 0, then set the value to the default value in linux guest.
Can we just always use the fixed value instead of reading
mmGDS_VMID0_SIZE?
We really don't want to introduce so much complexity here and another
extra code path for SRIOV.
Suppose VBIOS may set the size for different SKU so read from the register.
We may confirm a fixed or default value for all gfx v9.
Jerry
Christian.
Signed-off-by: Emily Deng <emily.d...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index ae86238..d9df3dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4872,6 +4872,17 @@ static void gfx_v9_0_set_rlc_funcs(struct
amdgpu_device *adev)
}
}
+static void gfx_v9_0_set_gds_default(struct amdgpu_device *adev)
+{
+ switch (adev->asic_type) {
+ case CHIP_VEGA10:
+ adev->gds.mem.total_size = 0x10000;
+ break;
+ default:
+ break;
+ }
+}
+
static void gfx_v9_0_set_gds_init(struct amdgpu_device *adev)
{
/* init asci gds info */
@@ -4879,6 +4890,9 @@ static void gfx_v9_0_set_gds_init(struct
amdgpu_device *adev)
adev->gds.gws.total_size = 64;
adev->gds.oa.total_size = 16;
+ if (adev->gds.mem.total_size == 0 && amdgpu_sriov_vf(adev))
+ gfx_v9_0_set_gds_default(adev);
+
if (adev->gds.mem.total_size == 64 * 1024) {
adev->gds.mem.gfx_partition_size = 4096;
adev->gds.mem.cs_partition_size = 4096;
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