[PATCH v2 1/1] drm/xe/eustall: Add support for EU stall sampling

[Souza, Jose]

On Sun, 2024-07-07 at 15:41 -0700, Ashutosh Dixit wrote:
> From: Harish Chegondi <harish.chegondi at intel.com>
> 
>  
> +/**
> + * enum drm_xe_eu_stall_property_id - EU stall data stream property ids.
> + *
> + * These properties are passed to the driver as a chain of
> + * @drm_xe_ext_set_property structures with @property set to these
> + * properties' enums and @value set to the corresponding values of these
> + * properties. @drm_xe_user_extension base.name should be set to
> + * @DRM_XE_EU_STALL_EXTENSION_SET_PROPERTY.
> + */
> +enum drm_xe_eu_stall_property_id {
> +#define DRM_XE_EU_STALL_EXTENSION_SET_PROPERTY		0
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_BUF_SZ: Per DSS Memory Buffer Size.
> +	 * Valid values are 128 KB, 256 KB, and 512 KB.
> +	 */
> +	DRM_XE_EU_STALL_PROP_BUF_SZ = 1,
> +
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_SAMPLE_RATE: Sampling rate
> +	 * in multiples of 251 cycles. Valid values are 1 to 7.
> +	 * If the value is 1, sampling interval is 251 cycles.
> +	 * If the value is 7, sampling interval is 7 x 251 cycles.
> +	 */
> +	DRM_XE_EU_STALL_PROP_SAMPLE_RATE,
> +
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_POLL_PERIOD: EU stall data
> +	 * poll period in nanoseconds. should be at least 100000 ns.
> +	 */
> +	DRM_XE_EU_STALL_PROP_POLL_PERIOD,
> +
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_EVENT_REPORT_COUNT: Minimum number of
> +	 * EU stall data rows to be present in the kernel buffer for
> +	 * poll() to set POLLIN (data present).
> +	 */
> +	DRM_XE_EU_STALL_PROP_EVENT_REPORT_COUNT,
> +
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_GT_ID: GT ID of the GT on which
> +	 * EU stall data will be captured.
> +	 */
> +	DRM_XE_EU_STALL_PROP_GT_ID,
> +
> +	/**
> +	 * @DRM_XE_EU_STALL_PROP_OPEN_DISABLED: A value of 1 will open
> +	 * the EU stall data stream without enabling EU stall sampling.
> +	 */
> +	DRM_XE_EU_STALL_PROP_OPEN_DISABLED,
> +
> +	DRM_XE_EU_STALL_PROP_MAX
> +};
> +
> +/**
> 

The PROP_MAX was removed from OA counters, I think this should also not have it.