From cce723ed091ac304d48386bcc3524994c345123e Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Fri, 19 Jul 2013 09:16:42 -0700 Subject: drm/i915: Make i915 events part of uapi Make the uevent strings part of the user API for people who wish to write their own listeners. v2: Make a space in the string concatenation. (Chad) Use the "UEVENT" suffix intead of "EVENT" (Chad) Make kernel-doc parseable Docbook comments (Daniel) v3: Undid reset change introduced in last submission (Daniel) Fixed up comments to address removal changes. Thanks to Daniel Vetter for a majority of the parity error comments. CC: Chad Versace Signed-off-by: Ben Widawsky Signed-off-by: Daniel Vetter --- include/uapi/drm/i915_drm.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/uapi/drm') diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 923ed7fe5775..a1a7b6bd60d8 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -33,6 +33,30 @@ * subject to backwards-compatibility constraints. */ +/** + * DOC: uevents generated by i915 on it's device node + * + * I915_L3_PARITY_UEVENT - Generated when the driver receives a parity mismatch + * event from the gpu l3 cache. Additional information supplied is ROW, + * BANK, SUBBANK of the affected cacheline. Userspace should keep track of + * these events and if a specific cache-line seems to have a persistent + * error remap it with the l3 remapping tool supplied in intel-gpu-tools. + * The value supplied with the event is always 1. + * + * I915_ERROR_UEVENT - Generated upon error detection, currently only via + * hangcheck. The error detection event is a good indicator of when things + * began to go badly. The value supplied with the event is a 1 upon error + * detection, and a 0 upon reset completion, signifying no more error + * exists. NOTE: Disabling hangcheck or reset via module parameter will + * cause the related events to not be seen. + * + * I915_RESET_UEVENT - Event is generated just before an attempt to reset the + * the GPU. The value supplied with the event is always 1. NOTE: Disable + * reset via module parameter will cause this event to not be seen. + */ +#define I915_L3_PARITY_UEVENT "L3_PARITY_ERROR" +#define I915_ERROR_UEVENT "ERROR" +#define I915_RESET_UEVENT "RESET" /* Each region is a minimum of 16k, and there are at most 255 of them. */ -- cgit v1.2.3-55-g7522