From 9a218d6f478edca73207f5b72efc9bbf035ea1cf Mon Sep 17 00:00:00 2001 From: Prike Liang Date: Fri, 21 Feb 2025 20:34:32 +0800 Subject: [PATCH 3177/5403] drm/amdgpu/gfx12: Implement the GFX12 KCQ pipe reset Implement the GFX12 KCQ pipe reset, and disable the GFX12 kernel compute queue until the CPFW fully supports it. Signed-off-by: Prike Liang Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 89 +++++++++++++++++++++++++- 1 file changed, 87 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c index 3d87e445270e..2474006b1a34 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c @@ -5316,6 +5316,89 @@ static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring, unsigned int vmid) return amdgpu_ring_test_ring(ring); } +static int gfx_v12_0_reset_compute_pipe(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + uint32_t reset_pipe = 0, clean_pipe = 0; + int r = 0; + + if (!gfx_v12_pipe_reset_support(adev)) + return -EOPNOTSUPP; + + gfx_v12_0_set_safe_mode(adev, 0); + mutex_lock(&adev->srbm_mutex); + soc24_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0); + + reset_pipe = RREG32_SOC15(GC, 0, regCP_MEC_RS64_CNTL); + clean_pipe = reset_pipe; + + if (adev->gfx.rs64_enable) { + switch (ring->pipe) { + case 0: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE0_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE0_RESET, 0); + break; + case 1: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE1_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE1_RESET, 0); + break; + case 2: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE2_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE2_RESET, 0); + break; + case 3: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE3_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_RS64_CNTL, + MEC_PIPE3_RESET, 0); + break; + default: + break; + } + WREG32_SOC15(GC, 0, regCP_MEC_RS64_CNTL, reset_pipe); + WREG32_SOC15(GC, 0, regCP_MEC_RS64_CNTL, clean_pipe); + r = (RREG32_SOC15(GC, 0, regCP_MEC_RS64_INSTR_PNTR) << 2) - + RS64_FW_UC_START_ADDR_LO; + } else { + switch (ring->pipe) { + case 0: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_CNTL, + MEC_ME1_PIPE0_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_CNTL, + MEC_ME1_PIPE0_RESET, 0); + break; + case 1: + reset_pipe = REG_SET_FIELD(reset_pipe, CP_MEC_CNTL, + MEC_ME1_PIPE1_RESET, 1); + clean_pipe = REG_SET_FIELD(clean_pipe, CP_MEC_CNTL, + MEC_ME1_PIPE1_RESET, 0); + break; + default: + break; + } + WREG32_SOC15(GC, 0, regCP_MEC_CNTL, reset_pipe); + WREG32_SOC15(GC, 0, regCP_MEC_CNTL, clean_pipe); + /* Doesn't find the F32 MEC instruction pointer register, and suppose + * the driver won't run into the F32 mode. + */ + } + + soc24_grbm_select(adev, 0, 0, 0, 0); + mutex_unlock(&adev->srbm_mutex); + gfx_v12_0_unset_safe_mode(adev, 0); + + dev_info(adev->dev, "The ring %s pipe resets: %s\n", ring->name, + r == 0 ? "successfully" : "failed"); + /* Need the ring test to verify the pipe reset result.*/ + return 0; +} + static int gfx_v12_0_reset_kcq(struct amdgpu_ring *ring, unsigned int vmid) { struct amdgpu_device *adev = ring->adev; @@ -5326,8 +5409,10 @@ static int gfx_v12_0_reset_kcq(struct amdgpu_ring *ring, unsigned int vmid) r = amdgpu_mes_reset_legacy_queue(ring->adev, ring, vmid, true); if (r) { - dev_err(adev->dev, "reset via MMIO failed %d\n", r); - return r; + dev_warn(adev->dev, "fail(%d) to reset kcq and try pipe reset\n", r); + r = gfx_v12_0_reset_compute_pipe(ring); + if (r) + return r; } r = gfx_v12_0_kcq_init_queue(ring, true); -- 2.54.0