[AMD Official Use Only]


> -----Original Message-----
> From: Chai, Thomas <[email protected]>
> Sent: Wednesday, January 19, 2022 10:56 AM
> To: [email protected]
> Cc: Chai, Thomas <[email protected]>; Zhang, Hawking
> <[email protected]>; Zhou1, Tao <[email protected]>; Clements,
> John <[email protected]>; Chai, Thomas <[email protected]>
> Subject: [PATCH 2/3] drm/amdgpu: Move xgmi ras initialization from .late_init
> to .early_init
> 
> Move xgmi ras initialization from .late_init to .early_init, which let xgmi 
> ras be
> initialized only once.
> 
> Signed-off-by: yipechai <[email protected]>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 5 -----
> drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c  | 1 -
>  drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c   | 9 +++++++++
>  3 files changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> index 3483a82f5734..d83eee1984c8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> @@ -452,11 +452,6 @@ int amdgpu_gmc_ras_late_init(struct amdgpu_device
> *adev)
>                       return r;
>       }
> 
> -     if (!adev->gmc.xgmi.connected_to_cpu) {
> -             adev->gmc.xgmi.ras = &xgmi_ras;
> -             amdgpu_ras_register_ras_block(adev, &adev->gmc.xgmi.ras-
> >ras_block);
> -     }
> -
>       if (adev->gmc.xgmi.ras && adev->gmc.xgmi.ras->ras_block.ras_late_init)
> {
>               r = adev->gmc.xgmi.ras->ras_block.ras_late_init(adev, NULL);
>               if (r)
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
> b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
> index 4f8d356f8432..5f9f82091000 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
> @@ -716,7 +716,6 @@ static void gmc_v10_0_set_gfxhub_funcs(struct
> amdgpu_device *adev)
>       }
>  }
> 
> -
[Tao]: Please don't introduce irrelevant change.

>  static int gmc_v10_0_early_init(void *handle)  {
>       struct amdgpu_device *adev = (struct amdgpu_device *)handle; diff --git
> a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index c76ffd1a70cd..8d1b11368a7b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -1303,6 +1303,14 @@ static void gmc_v9_0_set_hdp_ras_funcs(struct
> amdgpu_device *adev)
>       amdgpu_ras_register_ras_block(adev, &adev->hdp.ras->ras_block);  }
> 
> +static void gmc_v9_0_set_xgmi_ras_funcs(struct amdgpu_device *adev) {
> +     if (!adev->gmc.xgmi.connected_to_cpu) {
> +             adev->gmc.xgmi.ras = &xgmi_ras;
> +             amdgpu_ras_register_ras_block(adev, &adev->gmc.xgmi.ras-
> >ras_block);
> +     }
> +}
[Tao]: Since the initialization of xgmi.ras is common for all versions of IP, I 
recommend to create a generic ras_early_init func for it.
BTW, I think we can remove the check for block_obj's existence in 
register_ras_block now.

> +
>  static void gmc_v9_0_set_mca_funcs(struct amdgpu_device *adev)  {
>       /* is UMC the right IP to check for MCA?  Maybe DF? */ @@ -1339,6
> +1347,7 @@ static int gmc_v9_0_early_init(void *handle)
>       gmc_v9_0_set_gfxhub_funcs(adev);
>       gmc_v9_0_set_hdp_ras_funcs(adev);
>       gmc_v9_0_set_mca_funcs(adev);
> +     gmc_v9_0_set_xgmi_ras_funcs(adev);
> 
>       adev->gmc.shared_aperture_start = 0x2000000000000000ULL;
>       adev->gmc.shared_aperture_end =
> --
> 2.25.1

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