diff options
| author | Mukul Joshi <mukul.joshi@amd.com> | 2025-02-26 15:35:23 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-12-08 14:12:58 -0500 |
| commit | e08a675f940b2ec546236754718cd5f2a0054317 (patch) | |
| tree | 97461cb5a14f83378b6aff663170edf352bf5ad9 /drivers/gpu | |
| parent | 9c34a4c19efa8686737c03f1718618da58cae546 (diff) | |
drm/amdgpu: Setup Atomics enable in TCP UTCL0 for GFX 12.1.0
We need to explicitly setup atomics enable in TCP UTCL0 to enable
PCIe atomics to host memory.
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c index a16cd26e9a1b..3080aecc8341 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_1.c @@ -2521,6 +2521,12 @@ static void gfx_v12_1_init_golden_registers(struct amdgpu_device *adev) RETRY_FRAGMENT_THRESHOLD_UP_EN, 0x0); WREG32_SOC15(GC, 0, regTCP_UTCL0_THRASHING_CTRL, val); + + /* Set the TCP UTCL0 register to enable atomics */ + val = RREG32_SOC15(GC, 0, regTCP_UTCL0_CNTL1); + val = REG_SET_FIELD(val, TCP_UTCL0_CNTL1, ATOMIC_REQUESTER_EN, 0x1); + + WREG32_SOC15(GC, 0, regTCP_UTCL0_CNTL1, val); } static int gfx_v12_1_hw_init(struct amdgpu_ip_block *ip_block) |