From: Felix Kuehling <felix.kuehling@amd.com>
To: Mukul Joshi <mukul.joshi@amd.com>, amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH v2] drm/amdgpu: Enable SDMA utilization for Arcturus
Date: Fri, 11 Sep 2020 18:33:03 -0400 [thread overview]
Message-ID: <4e46bb34-6aea-93a1-8f40-ddd579231b41@amd.com> (raw)
In-Reply-To: <20200911213357.17366-1-mukul.joshi@amd.com>
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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prev parent reply other threads:[~2020-09-11 22:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-11 21:33 [PATCH v2] drm/amdgpu: Enable SDMA utilization for Arcturus Mukul Joshi
2020-09-11 22:33 ` Felix Kuehling [this message]
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