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From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Zeng, Oak" <Oak.Zeng-5C7GfCeVMHo@public.gmane.org>,
	"amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Cc: "Kuehling, Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>,
	"Koenig,
	Christian" <Christian.Koenig-5C7GfCeVMHo@public.gmane.org>
Subject: Re: [PATCH 2/2] drm/amdgpu: Enable gfx cache probing on HDP write for arcturus
Date: Tue, 8 Oct 2019 10:00:02 +0200	[thread overview]
Message-ID: <380de858-270b-84b2-df1c-4f24d59f6fb3@gmail.com> (raw)
In-Reply-To: <1570480448-29861-2-git-send-email-Oak.Zeng-5C7GfCeVMHo@public.gmane.org>

Am 07.10.19 um 22:34 schrieb Zeng, Oak:
> This allows gfx cache to be probed and invalidated (for none-dirty cache lines)
> on a HDP write (from either another GPU or CPU). This should work only for the
> memory mapped as RW memory type newly added for arcturus, to achieve some cache
> coherence b/t multiple memory clients.
>
> Change-Id: I5c9a6a25d88cd75c71c88822123e0d4c067aa3f8
> Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>

Acked-by: Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index c7e07f1..6e45ebb 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -1192,6 +1192,9 @@ static int gmc_v9_0_hw_init(void *handle)
>   		/* TODO for renoir */
>   		mmhub_v1_0_update_power_gating(adev, true);
>   		break;
> +	case CHIP_ARCTURUS:
> +		WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1);
> +		break;
>   	default:
>   		break;
>   	}

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  parent reply	other threads:[~2019-10-08  8:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-07 20:34 [PATCH 1/2] drm/amdgpu: Clean up gmc_v9_0_gart_enable Zeng, Oak
     [not found] ` <1570480448-29861-1-git-send-email-Oak.Zeng-5C7GfCeVMHo@public.gmane.org>
2019-10-07 20:34   ` [PATCH 2/2] drm/amdgpu: Enable gfx cache probing on HDP write for arcturus Zeng, Oak
     [not found]     ` <1570480448-29861-2-git-send-email-Oak.Zeng-5C7GfCeVMHo@public.gmane.org>
2019-10-08  8:00       ` Christian König [this message]
2019-10-08  7:59   ` [PATCH 1/2] drm/amdgpu: Clean up gmc_v9_0_gart_enable Christian König

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