Re: [PATCH 09/12] drm/msm/a8xx: devcoredump state capture support

[Konrad Dybcio]

On 10/20/26 10:46 PM, Rob Clark wrote:
> This attempts to make it easier to compare to kgsl, the downstream
> driver, to make it easier to spot bugs or missing things.  Such as
> re-using function names, etc.
> 
> Signed-off-by: Rob Clark <robin.clark@xxxxxxxxxxxxxxxx>
> Co-developed-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
> Signed-off-by: Rob Clark <robin.clark@xxxxxxxxxxxxxxxx>
> ---

[...]

> +#if defined(CONFIG_DRM_MSM_GPU_STATE)
> +		.show = a8xx_show,
> +#endif
>  		.gpu_busy = a8xx_gpu_busy,
>  		.gpu_get_freq = a6xx_gmu_get_freq,
>  		.gpu_set_freq = a6xx_gpu_set_freq,
> +#if defined(CONFIG_DRM_MSM_GPU_STATE)
> +		.gpu_state_get = a8xx_gpu_state_get,
> +		.gpu_state_put = a8xx_gpu_state_put,
> +#endif

It's odd to have 2 identical compile bounds side by side,
I'd just group them

[...]


> +static void gen8_cx_dbgc_debugbus_select(struct msm_gpu *gpu, u32 block_id, u32 index)
> +{
> +	u32 reg;
> +
> +	reg = A7XX_DBGC_CFG_DBGBUS_SEL_D_PING_INDEX(index) |
> +		A7XX_DBGC_CFG_DBGBUS_SEL_D_PING_BLK_SEL(block_id);
> +
> +	gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_A, reg);
> +	gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_B, reg);
> +	gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_C, reg);
> +	gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_D, reg);
> +
> +	/* Wait 1 us to make sure the data is flowing */
> +	udelay(1);

Should that be a readback instead?

Konrad