Re: [Freedreno] [PATCH 06/12] drm/msm/adreno: Allow SoC specific gpu device table entries

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

On 07/07/2023 00:10, Rob Clark wrote:
> From: Rob Clark <robdclark@chromium.org>
> 
> There are cases where there are differences due to SoC integration.
> Such as cache-coherency support, and (in the next patch) e-fuse to
> speedbin mappings.

I have the feeling that we are trying to circumvent the way DT works. 
I'd suggest adding explicit SoC-compatible strings to Adreno bindings 
and then using of_device_id::data and then of_device_get_match_data().

> 
> Signed-off-by: Rob Clark <robdclark@chromium.org>
> ---
>   drivers/gpu/drm/msm/adreno/adreno_device.c | 34 +++++++++++++++++++---
>   drivers/gpu/drm/msm/adreno/adreno_gpu.h    |  1 +
>   2 files changed, 31 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index 3c531da417b9..e62bc895a31f 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -258,6 +258,32 @@ static const struct adreno_info gpulist[] = {
>   		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
>   		.quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
>   		.init = a6xx_gpu_init,
> +	}, {
> +		.machine = "qcom,sm4350",
> +		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
> +		.revn = 619,
> +		.fw = {
> +			[ADRENO_FW_SQE] = "a630_sqe.fw",
> +			[ADRENO_FW_GMU] = "a619_gmu.bin",
> +		},
> +		.gmem = SZ_512K,
> +		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> +		.init = a6xx_gpu_init,
> +		.zapfw = "a615_zap.mdt",
> +		.hwcg = a615_hwcg,
> +	}, {
> +		.machine = "qcom,sm6375",
> +		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
> +		.revn = 619,
> +		.fw = {
> +			[ADRENO_FW_SQE] = "a630_sqe.fw",
> +			[ADRENO_FW_GMU] = "a619_gmu.bin",
> +		},
> +		.gmem = SZ_512K,
> +		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> +		.init = a6xx_gpu_init,
> +		.zapfw = "a615_zap.mdt",
> +		.hwcg = a615_hwcg,
>   	}, {
>   		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
>   		.revn = 619,
> @@ -409,6 +435,8 @@ const struct adreno_info *adreno_info(struct adreno_rev rev)
>   	/* identify gpu: */
>   	for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
>   		const struct adreno_info *info = &gpulist[i];
> +		if (info->machine && !of_machine_is_compatible(info->machine))
> +			continue;
>   		if (adreno_cmp_rev(info->rev, rev))
>   			return info;
>   	}
> @@ -563,6 +591,8 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
>   		config.rev.minor, config.rev.patchid);
>   
>   	priv->is_a2xx = config.rev.core == 2;
> +	priv->has_cached_coherent =
> +		!!(info->quirks & ADRENO_QUIRK_HAS_CACHED_COHERENT);
>   
>   	gpu = info->init(drm);
>   	if (IS_ERR(gpu)) {
> @@ -574,10 +604,6 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
>   	if (ret)
>   		return ret;
>   
> -	priv->has_cached_coherent =
> -		!!(info->quirks & ADRENO_QUIRK_HAS_CACHED_COHERENT) &&
> -		!adreno_has_gmu_wrapper(to_adreno_gpu(gpu));
> -
>   	return 0;
>   }
>   
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> index e08d41337169..d5335b99c64c 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> @@ -61,6 +61,7 @@ extern const struct adreno_reglist a612_hwcg[], a615_hwcg[], a630_hwcg[], a640_h
>   extern const struct adreno_reglist a660_hwcg[], a690_hwcg[];
>   
>   struct adreno_info {
> +	const char *machine;
>   	struct adreno_rev rev;
>   	uint32_t revn;
>   	const char *fw[ADRENO_FW_MAX];

-- 
With best wishes
Dmitry