linux-kernel - Re: [PATCH v3 1/3] drm/msm/adreno: Add Adreno A690 support

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Message-ID: <57ffc7d9-c767-df36-d91f-8949993b1cdf@linaro.org>
Date:   Wed, 31 May 2023 22:30:09 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, johan@...nel.org, mani@...nel.org,
        Steev Klimaszewski <steev@...i.org>
Subject: Re: [PATCH v3 1/3] drm/msm/adreno: Add Adreno A690 support



On 31.05.2023 05:09, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> Introduce support for the Adreno A690, found in Qualcomm SC8280XP.
> 
> Tested-by: Steev Klimaszewski <steev@...i.org>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
Couple of additional nits that you may or may not incorporate:

[...]

> +	{REG_A6XX_RBBM_CLOCK_HYST_SP0, 0x0000F3CF},
It would be cool if we could stop adding uppercase hex outside preprocessor
defines..


[...]
> +	A6XX_PROTECT_RDONLY(0x0fc00, 0x01fff),
> +	A6XX_PROTECT_NORDWR(0x11c00, 0x00000), /*note: infiite range */
typo



-- Questions to Rob that don't really concern this patch --

> +static void a690_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
Rob, I'll be looking into reworking these into dynamic tables.. would you
be okay with two more additions (A730, A740) on top of this before I do that?
The number of these funcs has risen quite a bit and we're abusing the fact
that so far there's a 1-1 mapping of SoC-Adreno (at the current state of
mainline, not in general)..

> +{
> +	/*
> +	 * Send a single "off" entry just to get things running
> +	 * TODO: bus scaling
> +	 */
Also something I'll be looking into in the near future..

> @@ -531,6 +562,8 @@ static int a6xx_hfi_send_bw_table(struct a6xx_gmu *gmu)
>  		adreno_7c3_build_bw_table(&msg);
>  	else if (adreno_is_a660(adreno_gpu))
>  		a660_build_bw_table(&msg);
> +	else if (adreno_is_a690(adreno_gpu))
> +		a690_build_bw_table(&msg);
>  	else
>  		a6xx_build_bw_table(&msg);
I think changing the is_adreno_... to switch statements with a gpu_model
var would make it easier to read.. Should I also rework that?

Konrad

>  
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index 8cff86e9d35c..e5a865024e94 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -355,6 +355,20 @@ static const struct adreno_info gpulist[] = {
>  		.init = a6xx_gpu_init,
>  		.zapfw = "a640_zap.mdt",
>  		.hwcg = a640_hwcg,
> +	}, {
> +		.rev = ADRENO_REV(6, 9, 0, ANY_ID),
> +		.revn = 690,
> +		.name = "A690",
> +		.fw = {
> +			[ADRENO_FW_SQE] = "a660_sqe.fw",
> +			[ADRENO_FW_GMU] = "a690_gmu.bin",
> +		},
> +		.gmem = SZ_4M,
> +		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> +		.init = a6xx_gpu_init,
> +		.zapfw = "a690_zap.mdt",
> +		.hwcg = a690_hwcg,
> +		.address_space_size = SZ_16G,
>  	},
>  };
>  
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> index f62612a5c70f..ac9c429ca07b 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> @@ -55,7 +55,7 @@ struct adreno_reglist {
>  	u32 value;
>  };
>  
> -extern const struct adreno_reglist a615_hwcg[], a630_hwcg[], a640_hwcg[], a650_hwcg[], a660_hwcg[];
> +extern const struct adreno_reglist a615_hwcg[], a630_hwcg[], a640_hwcg[], a650_hwcg[], a660_hwcg[], a690_hwcg[];
>  
>  struct adreno_info {
>  	struct adreno_rev rev;
> @@ -272,6 +272,11 @@ static inline int adreno_is_a660(struct adreno_gpu *gpu)
>  	return gpu->revn == 660;
>  }
>  
> +static inline int adreno_is_a690(struct adreno_gpu *gpu)
> +{
> +	return gpu->revn == 690;
> +};
> +
>  /* check for a615, a616, a618, a619 or any derivatives */
>  static inline int adreno_is_a615_family(struct adreno_gpu *gpu)
>  {
> @@ -280,13 +285,13 @@ static inline int adreno_is_a615_family(struct adreno_gpu *gpu)
>  
>  static inline int adreno_is_a660_family(struct adreno_gpu *gpu)
>  {
> -	return adreno_is_a660(gpu) || adreno_is_7c3(gpu);
> +	return adreno_is_a660(gpu) || adreno_is_a690(gpu) || adreno_is_7c3(gpu);
>  }
>  
>  /* check for a650, a660, or any derivatives */
>  static inline int adreno_is_a650_family(struct adreno_gpu *gpu)
>  {
> -	return gpu->revn == 650 || gpu->revn == 620 || adreno_is_a660_family(gpu);
> +	return gpu->revn == 650 || gpu->revn == 620  || adreno_is_a660_family(gpu);
>  }
>  
>  u64 adreno_private_address_space_size(struct msm_gpu *gpu);