Re: [PATCH 1/2] drm/amdgpu/atom: fix vram_usagebyfirmware parsing

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Alex

On Fri, Nov 17, 2023 at 11:17 AM Alex Deucher <alexander.deucher@xxxxxxx> wrote:
>
> The changes to support vram_usagebyfirmware v2.2 changed the behavior
> to explicitly match 2.1 for everything older rather than just using it
> by default.  If the version is 2.2 or newer, use the 2.2 parsing, for
> everything else, use the 2.1 parsing.  This restores the previous
> behavior for tables that didn't explicitly match 2.1.
>
> Fixes: 4864f2ee9ee2 ("drm/amdgpu: add vram reservation based on vram_usagebyfirmware_v2_2")
> Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1215802
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
>  .../gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c   | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> index fb2681dd6b33..d8393e3f2778 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
> @@ -181,18 +181,18 @@ int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
>         int usage_bytes = 0;
>
>         if (amdgpu_atom_parse_data_header(ctx, index, NULL, &frev, &crev, &data_offset)) {
> -               if (frev == 2 && crev == 1) {
> -                       fw_usage_v2_1 =
> -                               (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
> -                       amdgpu_atomfirmware_allocate_fb_v2_1(adev,
> -                                       fw_usage_v2_1,
> -                                       &usage_bytes);
> -               } else if (frev >= 2 && crev >= 2) {
> +               if (frev >= 2 && crev >= 2) {
>                         fw_usage_v2_2 =
>                                 (struct vram_usagebyfirmware_v2_2 *)(ctx->bios + data_offset);
>                         amdgpu_atomfirmware_allocate_fb_v2_2(adev,
> -                                       fw_usage_v2_2,
> -                                       &usage_bytes);
> +                                                            fw_usage_v2_2,
> +                                                            &usage_bytes);
> +               } else {
> +                       fw_usage_v2_1 =
> +                               (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
> +                       amdgpu_atomfirmware_allocate_fb_v2_1(adev,
> +                                                            fw_usage_v2_1,
> +                                                            &usage_bytes);
>                 }
>         }
>
> --
> 2.41.0
>




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