[PATCH v3 05/15] drm/panfrost: Expose exception types to userspace

[Alyssa Rosenzweig]

I'm not convinced. Right now most of our UABI is pleasantly
GPU-agnostic. With this suddenly there's divergence between Midgard and
Bifrost uABI. With that drawback in mind, could you explain the benefit?

On Fri, Jun 25, 2021 at 03:33:17PM +0200, Boris Brezillon wrote:
> Job headers contain an exception type field which might be read and
> converted to a human readable string by tracing tools. Let's expose
> the exception type as an enum so we share the same definition.
> 
> v3:
> * Add missing values
> 
> Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
> ---
>  include/uapi/drm/panfrost_drm.h | 71 +++++++++++++++++++++++++++++++++
>  1 file changed, 71 insertions(+)
> 
> diff --git a/include/uapi/drm/panfrost_drm.h b/include/uapi/drm/panfrost_drm.h
> index ec19db1eead8..899cd6d952d4 100644
> --- a/include/uapi/drm/panfrost_drm.h
> +++ b/include/uapi/drm/panfrost_drm.h
> @@ -223,6 +223,77 @@ struct drm_panfrost_madvise {
>  	__u32 retained;       /* out, whether backing store still exists */
>  };
>  
> +/* The exception types */
> +
> +enum drm_panfrost_exception_type {
> +	DRM_PANFROST_EXCEPTION_OK = 0x00,
> +	DRM_PANFROST_EXCEPTION_DONE = 0x01,
> +	DRM_PANFROST_EXCEPTION_INTERRUPTED = 0x02,
> +	DRM_PANFROST_EXCEPTION_STOPPED = 0x03,
> +	DRM_PANFROST_EXCEPTION_TERMINATED = 0x04,
> +	DRM_PANFROST_EXCEPTION_KABOOM = 0x05,
> +	DRM_PANFROST_EXCEPTION_EUREKA = 0x06,
> +	DRM_PANFROST_EXCEPTION_ACTIVE = 0x08,
> +	DRM_PANFROST_EXCEPTION_JOB_CONFIG_FAULT = 0x40,
> +	DRM_PANFROST_EXCEPTION_JOB_POWER_FAULT = 0x41,
> +	DRM_PANFROST_EXCEPTION_JOB_READ_FAULT = 0x42,
> +	DRM_PANFROST_EXCEPTION_JOB_WRITE_FAULT = 0x43,
> +	DRM_PANFROST_EXCEPTION_JOB_AFFINITY_FAULT = 0x44,
> +	DRM_PANFROST_EXCEPTION_JOB_BUS_FAULT = 0x48,
> +	DRM_PANFROST_EXCEPTION_INSTR_INVALID_PC = 0x50,
> +	DRM_PANFROST_EXCEPTION_INSTR_INVALID_ENC = 0x51,
> +	DRM_PANFROST_EXCEPTION_INSTR_TYPE_MISMATCH = 0x52,
> +	DRM_PANFROST_EXCEPTION_INSTR_OPERAND_FAULT = 0x53,
> +	DRM_PANFROST_EXCEPTION_INSTR_TLS_FAULT = 0x54,
> +	DRM_PANFROST_EXCEPTION_INSTR_BARRIER_FAULT = 0x55,
> +	DRM_PANFROST_EXCEPTION_INSTR_ALIGN_FAULT = 0x56,
> +	DRM_PANFROST_EXCEPTION_DATA_INVALID_FAULT = 0x58,
> +	DRM_PANFROST_EXCEPTION_TILE_RANGE_FAULT = 0x59,
> +	DRM_PANFROST_EXCEPTION_ADDR_RANGE_FAULT = 0x5a,
> +	DRM_PANFROST_EXCEPTION_IMPRECISE_FAULT = 0x5b,
> +	DRM_PANFROST_EXCEPTION_OOM = 0x60,
> +	DRM_PANFROST_EXCEPTION_OOM_AFBC = 0x61,
> +	DRM_PANFROST_EXCEPTION_UNKNOWN = 0x7f,
> +	DRM_PANFROST_EXCEPTION_DELAYED_BUS_FAULT = 0x80,
> +	DRM_PANFROST_EXCEPTION_GPU_SHAREABILITY_FAULT = 0x88,
> +	DRM_PANFROST_EXCEPTION_SYS_SHAREABILITY_FAULT = 0x89,
> +	DRM_PANFROST_EXCEPTION_GPU_CACHEABILITY_FAULT = 0x8a,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_0 = 0xc0,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_1 = 0xc1,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_2 = 0xc2,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_3 = 0xc3,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_4 = 0xc4,
> +	DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_IDENTITY = 0xc7,
> +	DRM_PANFROST_EXCEPTION_PERM_FAULT_0 = 0xc8,
> +	DRM_PANFROST_EXCEPTION_PERM_FAULT_1 = 0xc9,
> +	DRM_PANFROST_EXCEPTION_PERM_FAULT_2 = 0xca,
> +	DRM_PANFROST_EXCEPTION_PERM_FAULT_3 = 0xcb,
> +	DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_0 = 0xd0,
> +	DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_1 = 0xd1,
> +	DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_2 = 0xd2,
> +	DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_3 = 0xd3,
> +	DRM_PANFROST_EXCEPTION_ACCESS_FLAG_0 = 0xd8,
> +	DRM_PANFROST_EXCEPTION_ACCESS_FLAG_1 = 0xd9,
> +	DRM_PANFROST_EXCEPTION_ACCESS_FLAG_2 = 0xda,
> +	DRM_PANFROST_EXCEPTION_ACCESS_FLAG_3 = 0xdb,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN0 = 0xe0,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN1 = 0xe1,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN2 = 0xe2,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN3 = 0xe3,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT0 = 0xe4,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT1 = 0xe5,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT2 = 0xe6,
> +	DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT3 = 0xe7,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_0 = 0xe8,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_1 = 0xe9,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_2 = 0xea,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_3 = 0xeb,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_0 = 0xec,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_1 = 0xed,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_2 = 0xee,
> +	DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_3 = 0xef,
> +};
> +
>  #if defined(__cplusplus)
>  }
>  #endif
> -- 
> 2.31.1
>