diff options
| author | Monk Liu <Monk.Liu@amd.com> | 2019-09-24 16:08:00 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-03 09:11:01 -0500 |
| commit | e7da754b00ee40af55e522f9dc478d8ed3a3ad3d (patch) | |
| tree | 1dc570863d12159de86f36c1ccfbf8fcb5731319 /drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | |
| parent | 6de088a08ddc4876947e3319c98df116257e6ea5 (diff) | |
drm/amdgpu: fix an UMC hw arbitrator bug(v3)
issue:
the UMC6 h/w bug is that when MCLK is doing the switch
in the middle of a page access being preempted by high
priority client (e.g. DISPLAY) then UMC and the mclk switch
would stuck there due to deadlock
how:
fixed by disabling auto PreChg for UMC to avoid high
priority client preempting other client's access on
the same page, thus the deadlock could be avoided
v2:
put the patch in callback of UMC6
v3:
rename the callback to "init_registers"
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <hawking.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index b4451a58743c..7f6536c5e549 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -51,6 +51,7 @@ #include "gfxhub_v1_1.h" #include "mmhub_v9_4.h" #include "umc_v6_1.h" +#include "umc_v6_0.h" #include "ivsrcid/vmc/irqsrcs_vmc_1_0.h" @@ -696,6 +697,9 @@ static void gmc_v9_0_set_gmc_funcs(struct amdgpu_device *adev) static void gmc_v9_0_set_umc_funcs(struct amdgpu_device *adev) { switch (adev->asic_type) { + case CHIP_VEGA10: + adev->umc.funcs = &umc_v6_0_funcs; + break; case CHIP_VEGA20: adev->umc.max_ras_err_cnt_per_query = UMC_V6_1_TOTAL_CHANNEL_NUM; adev->umc.channel_inst_num = UMC_V6_1_CHANNEL_INSTANCE_NUM; @@ -1303,6 +1307,9 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev) for (i = 0; i < adev->num_vmhubs; ++i) gmc_v9_0_flush_gpu_tlb(adev, 0, i, 0); + if (adev->umc.funcs && adev->umc.funcs->init_registers) + adev->umc.funcs->init_registers(adev); + DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n", (unsigned)(adev->gmc.gart_size >> 20), (unsigned long long)amdgpu_bo_gpu_offset(adev->gart.bo)); |