Re: [PATCH] drm/amd/amdgpu: Update debugfs GCA data

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On Fri, Apr 8, 2022 at 9:21 AM Tom St Denis <tom.stdenis@xxxxxxx> wrote:
>
> The revision was not changed to 5 from 4.  Also since
> this was missed I took the opportunity to add future
> upper 64-bits of PG flags as well so we don't need to
> bump it again when that comes.
>
> Signed-off-by: Tom St Denis <tom.stdenis@xxxxxxx>

Maybe add a comment explaining why we jumped to 5.  Either way:
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> index 1db48dc58ae9..13e4d8f9b874 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> @@ -730,7 +730,7 @@ static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
>                 return -ENOMEM;
>
>         /* version, increment each time something is added */
> -       config[no_regs++] = 4;
> +       config[no_regs++] = 5;
>         config[no_regs++] = adev->gfx.config.max_shader_engines;
>         config[no_regs++] = adev->gfx.config.max_tile_pipes;
>         config[no_regs++] = adev->gfx.config.max_cu_per_sh;
> @@ -757,7 +757,7 @@ static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
>
>         /* rev==1 */
>         config[no_regs++] = adev->rev_id;
> -       config[no_regs++] = adev->pg_flags;
> +       config[no_regs++] = lower_32_bits(adev->pg_flags);
>         config[no_regs++] = lower_32_bits(adev->cg_flags);
>
>         /* rev==2 */
> @@ -773,7 +773,8 @@ static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
>         /* rev==4 APU flag */
>         config[no_regs++] = adev->flags & AMD_IS_APU ? 1 : 0;
>
> -       /* rev==5 CG flag upper 32bit */
> +       /* rev==5 PG/CG flag upper 32bit */
> +       config[no_regs++] = upper_32_bits(adev->pg_flags);
>         config[no_regs++] = upper_32_bits(adev->cg_flags);
>
>         while (size && (*pos < no_regs * 4)) {
> --
> 2.32.0
>



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