Re: [PATCH v2 8/9] drm/panfrost: Add Mali-G57 "Natt" support

Steven Price
2022-05-26T08:49:29Z

On 25/05/2022 15:57, Alyssa Rosenzweig wrote:
> Add the features, issues, and GPU ID for Mali-G57, a first-generation
> Valhall GPU. Other first- and second-generation Valhall GPUs should be
> similar.
>
> v2: Split out issue list for r0p0 from newer Natt GPUs, as TTRX_3485 was
> fixed in r0p1. Unfortunately, MT8192 has a r0p0, so we do need to handle
> TTRX_3485.
>
> Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
> ---
> drivers/gpu/drm/panfrost/panfrost_features.h | 12 ++++++++++++
> drivers/gpu/drm/panfrost/panfrost_gpu.c | 3 +++
> drivers/gpu/drm/panfrost/panfrost_issues.h | 9 +++++++++
> 3 files changed, 24 insertions(+)
>
> diff --git a/drivers/gpu/drm/panfrost/panfrost_features.h b/drivers/gpu/drm/panfrost/panfrost_features.h
> index 1a8bdebc86a3..7ed0cd3ea2d4 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_features.h
> +++ b/drivers/gpu/drm/panfrost/panfrost_features.h
> @@ -106,6 +106,18 @@ enum panfrost_hw_feature {
> BIT_ULL(HW_FEATURE_TLS_HASHING) | \
> BIT_ULL(HW_FEATURE_3BIT_EXT_RW_L2_MMU_CONFIG))
>
> +#define hw_features_g57 (\
> + BIT_ULL(HW_FEATURE_JOBCHAIN_DISAMBIGUATION) | \
> + BIT_ULL(HW_FEATURE_PWRON_DURING_PWROFF_TRANS) | \
> + BIT_ULL(HW_FEATURE_XAFFINITY) | \
> + BIT_ULL(HW_FEATURE_FLUSH_REDUCTION) | \
> + BIT_ULL(HW_FEATURE_PROTECTED_MODE) | \
> + BIT_ULL(HW_FEATURE_PROTECTED_DEBUG_MODE) | \
> + BIT_ULL(HW_FEATURE_COHERENCY_REG) | \
> + BIT_ULL(HW_FEATURE_AARCH64_MMU) | \
> + BIT_ULL(HW_FEATURE_IDVS_GROUP_SIZE) | \
> + BIT_ULL(HW_FEATURE_CLEAN_ONLY_SAFE))
> +
> static inline bool panfrost_has_hw_feature(struct panfrost_device *pfdev,
> enum panfrost_hw_feature feat)
> {
> diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
> index e1a6e763d0dc..6452e4e900dd 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
> @@ -201,6 +201,9 @@ static const struct panfrost_model gpu_models[] = {
> GPU_MODEL(g52, 0x7002),
> GPU_MODEL(g31, 0x7003,
> GPU_REV(g31, 1, 0)),
> +
> + GPU_MODEL(g57, 0x9001,
> + GPU_REV(g57, 0, 0)),
> };
>
> static void panfrost_gpu_init_features(struct panfrost_device *pfdev)
> diff --git a/drivers/gpu/drm/panfrost/panfrost_issues.h b/drivers/gpu/drm/panfrost/panfrost_issues.h
> index 4d41e0a13867..c5fa9e897a35 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_issues.h
> +++ b/drivers/gpu/drm/panfrost/panfrost_issues.h
> @@ -258,6 +258,15 @@ enum panfrost_hw_issue {
>
> #define hw_issues_g76 0
>
> +#define hw_issues_g57 (\
> + BIT_ULL(HW_ISSUE_TTRX_2968_TTRX_3162) | \
> + BIT_ULL(HW_ISSUE_TTRX_3076))
> +
> +#define hw_issues_g57_r0p0 (\
> + BIT_ULL(HW_ISSUE_TTRX_2968_TTRX_3162) | \
> + BIT_ULL(HW_ISSUE_TTRX_3076) | \
> + BIT_ULL(HW_ISSUE_TTRX_3485))

There's no need to repeat the issues that are generic for g57 in the
r0p0 list. So this can be simplified to:

#define hw_issues_g57_r0p0 (\
BIT_ULL(HW_ISSUE_TTRX_3485))

With that fixed:

Reviewed-by: Steven Price <steven.price@arm.com>

> +
> static inline bool panfrost_has_hw_issue(const struct panfrost_device *pfdev,
> enum panfrost_hw_issue issue)
> {