* [PATCH v2] drm/amdgpu: Enable SDMA utilization for Arcturus
@ 2020-09-11 21:33 Mukul Joshi
2020-09-11 22:33 ` Felix Kuehling
0 siblings, 1 reply; 2+ messages in thread
From: Mukul Joshi @ 2020-09-11 21:33 UTC (permalink / raw)
To: amd-gfx; +Cc: Mukul Joshi, Felix.Kuehling
SDMA utilization calculations are enabled/disabled by
writing to SDMAx_PUB_DUMMY_REG2 register. Currently,
enable this only for Arcturus.
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 856c50386c86..edea8743f26e 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1063,6 +1063,15 @@ static void sdma_v4_0_ctx_switch_enable(struct amdgpu_device *adev, bool enable)
WREG32_SDMA(i, mmSDMA0_PHASE2_QUANTUM, phase_quantum);
}
WREG32_SDMA(i, mmSDMA0_CNTL, f32_cntl);
+
+ /*
+ * Enable SDMA utilization. Its only supported on
+ * Arcturus for the moment and firmware version 14
+ * and above.
+ */
+ if (adev->asic_type == CHIP_ARCTURUS &&
+ adev->sdma.instance[i].fw_version >= 14)
+ WREG32_SDMA(i, mmSDMA0_PUB_DUMMY_REG2, enable);
}
}
--
2.17.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] drm/amdgpu: Enable SDMA utilization for Arcturus
2020-09-11 21:33 [PATCH v2] drm/amdgpu: Enable SDMA utilization for Arcturus Mukul Joshi
@ 2020-09-11 22:33 ` Felix Kuehling
0 siblings, 0 replies; 2+ messages in thread
From: Felix Kuehling @ 2020-09-11 22:33 UTC (permalink / raw)
To: Mukul Joshi, amd-gfx
Am 2020-09-11 um 5:33 p.m. schrieb Mukul Joshi:
> SDMA utilization calculations are enabled/disabled by
> writing to SDMAx_PUB_DUMMY_REG2 register. Currently,
> enable this only for Arcturus.
>
> Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> index 856c50386c86..edea8743f26e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> @@ -1063,6 +1063,15 @@ static void sdma_v4_0_ctx_switch_enable(struct amdgpu_device *adev, bool enable)
> WREG32_SDMA(i, mmSDMA0_PHASE2_QUANTUM, phase_quantum);
> }
> WREG32_SDMA(i, mmSDMA0_CNTL, f32_cntl);
> +
> + /*
> + * Enable SDMA utilization. Its only supported on
> + * Arcturus for the moment and firmware version 14
> + * and above.
> + */
> + if (adev->asic_type == CHIP_ARCTURUS &&
> + adev->sdma.instance[i].fw_version >= 14)
> + WREG32_SDMA(i, mmSDMA0_PUB_DUMMY_REG2, enable);
> }
>
> }
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