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| author | Eric Huang <JinHuiEric.Huang@amd.com> | 2015-11-11 11:49:11 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-12-21 16:42:36 -0500 |
| commit | 3c997d2412572a9306b7cebd713271c0fdc1350c (patch) | |
| tree | ee8db33615aca5b0ce6965d670722a58da150917 /drivers/gpu | |
| parent | a0d69786b5e8c39f8e8a24422a05d3f1f4434b4d (diff) | |
| download | linux-3c997d2412572a9306b7cebd713271c0fdc1350c.tar.gz linux-3c997d2412572a9306b7cebd713271c0fdc1350c.tar.bz2 linux-3c997d2412572a9306b7cebd713271c0fdc1350c.zip | |
drm/amdgpu: add sdma clock gating support for Fiji.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c index c741c091bc9e..ad54c46751b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c @@ -1429,9 +1429,114 @@ static int sdma_v3_0_process_illegal_inst_irq(struct amdgpu_device *adev, return 0; } +static void fiji_update_sdma_medium_grain_clock_gating( + struct amdgpu_device *adev, + bool enable) +{ + uint32_t temp, data; + + if (enable) { + temp = data = RREG32(mmSDMA0_CLK_CTRL); + data &= ~(SDMA0_CLK_CTRL__SOFT_OVERRIDE7_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE6_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE5_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE4_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE3_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE2_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE1_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE0_MASK); + if (data != temp) + WREG32(mmSDMA0_CLK_CTRL, data); + + temp = data = RREG32(mmSDMA1_CLK_CTRL); + data &= ~(SDMA1_CLK_CTRL__SOFT_OVERRIDE7_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE6_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE5_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE4_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE3_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE2_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE1_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE0_MASK); + + if (data != temp) + WREG32(mmSDMA1_CLK_CTRL, data); + } else { + temp = data = RREG32(mmSDMA0_CLK_CTRL); + data |= SDMA0_CLK_CTRL__SOFT_OVERRIDE7_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE6_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE5_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE4_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE3_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE2_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE1_MASK | + SDMA0_CLK_CTRL__SOFT_OVERRIDE0_MASK; + + if (data != temp) + WREG32(mmSDMA0_CLK_CTRL, data); + + temp = data = RREG32(mmSDMA1_CLK_CTRL); + data |= SDMA1_CLK_CTRL__SOFT_OVERRIDE7_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE6_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE5_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE4_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE3_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE2_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE1_MASK | + SDMA1_CLK_CTRL__SOFT_OVERRIDE0_MASK; + + if (data != temp) + WREG32(mmSDMA1_CLK_CTRL, data); + } +} + +static void fiji_update_sdma_medium_grain_light_sleep( + struct amdgpu_device *adev, + bool enable) +{ + uint32_t temp, data; + + if (enable) { + temp = data = RREG32(mmSDMA0_POWER_CNTL); + data |= SDMA0_POWER_CNTL__MEM_POWER_OVERRIDE_MASK; + + if (temp != data) + WREG32(mmSDMA0_POWER_CNTL, data); + + temp = data = RREG32(mmSDMA1_POWER_CNTL); + data |= SDMA1_POWER_CNTL__MEM_POWER_OVERRIDE_MASK; + + if (temp != data) + WREG32(mmSDMA1_POWER_CNTL, data); + } else { + temp = data = RREG32(mmSDMA0_POWER_CNTL); + data &= ~SDMA0_POWER_CNTL__MEM_POWER_OVERRIDE_MASK; + + if (temp != data) + WREG32(mmSDMA0_POWER_CNTL, data); + + temp = data = RREG32(mmSDMA1_POWER_CNTL); + data &= ~SDMA1_POWER_CNTL__MEM_POWER_OVERRIDE_MASK; + + if (temp != data) + WREG32(mmSDMA1_POWER_CNTL, data); + } +} + static int sdma_v3_0_set_clockgating_state(void *handle, enum amd_clockgating_state state) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + switch (adev->asic_type) { + case CHIP_FIJI: + fiji_update_sdma_medium_grain_clock_gating(adev, + state == AMD_CG_STATE_GATE ? true : false); + fiji_update_sdma_medium_grain_light_sleep(adev, + state == AMD_CG_STATE_GATE ? true : false); + break; + default: + break; + } return 0; } |