public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/amdgpu: no rlcg legacy read in SRIOV case

Browse source 
rlcg legacy read is not available in SRIOV configration.
Otherwise, gmc_v9_0_flush_gpu_tlb will always complain
timeout and finally breaks driver load.

v2: bypass read in amdgpu_virt_get_rlcg_reg_access_flag (from Victor)

Fixes: 97d1a3b967 ("drm/amdgpu: switch to get_rlcg_reg_access_flag for gfx9")
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Victor Skvortsov <Victor.Skvortsov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Guchun Chen 2022-02-10 14:34:51 +08:00 • committed by Alex Deucher
parent 7157934699
commit 22b1df28c0
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
View file

@ -836,7 +836,7 @@ static bool amdgpu_virt_get_rlcg_reg_access_flag(struct amdgpu_device *adev,
/* only in new version, AMDGPU_REGS_NO_KIQ and
* AMDGPU_REGS_RLC are enabled simultaneously */
} else if ((acc_flags & AMDGPU_REGS_RLC) &&
!(acc_flags & AMDGPU_REGS_NO_KIQ)) {
!(acc_flags & AMDGPU_REGS_NO_KIQ) && write) {
*rlcg_flag = AMDGPU_RLCG_GC_WRITE_LEGACY;
ret = true;
}
@ -940,7 +940,7 @@ void amdgpu_sriov_wreg(struct amdgpu_device *adev,
u32 rlcg_flag;
if (!amdgpu_sriov_runtime(adev) &&
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, true, &rlcg_flag)) {
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, true, &rlcg_flag)) {
amdgpu_virt_rlcg_reg_rw(adev, offset, value, rlcg_flag);
return;
}
@ -957,7 +957,7 @@ u32 amdgpu_sriov_rreg(struct amdgpu_device *adev,
u32 rlcg_flag;
if (!amdgpu_sriov_runtime(adev) &&
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, false, &rlcg_flag))
amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, false, &rlcg_flag))
return amdgpu_virt_rlcg_reg_rw(adev, offset, 0, rlcg_flag);
if (acc_flags & AMDGPU_REGS_NO_KIQ)