freedreno/drm: Add support to query device suspend count

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9901>

include/drm-uapi/msm_drm.h

@@ -76,6 +76,7 @@ struct drm_msm_timespec {
 #define MSM_PARAM_NR_RINGS   0x07
 #define MSM_PARAM_PP_PGTABLE 0x08  /* => 1 for per-process pagetables, else 0 */
 #define MSM_PARAM_FAULTS     0x09
+#define MSM_PARAM_SUSPENDS   0x0a
 
 struct drm_msm_param {
 	__u32 pipe;           /* in, MSM_PIPE_x */

src/freedreno/drm/freedreno_drmif.h

@@ -61,6 +61,7 @@ enum fd_param_id {
    FD_PP_PGTABLE,    /* are per-process pagetables used for the pipe/ctx */
    FD_CTX_FAULTS,    /* # of per context faults */
    FD_GLOBAL_FAULTS, /* # of global (all context) faults */
+   FD_SUSPEND_COUNT, /* # of times the GPU has suspended, and potentially lost state */
 };
 
 /**

src/freedreno/drm/msm_pipe.c

@@ -99,6 +99,8 @@ msm_pipe_get_param(struct fd_pipe *pipe, enum fd_param_id param,
       return query_queue_param(pipe, MSM_SUBMITQUEUE_PARAM_FAULTS, value);
    case FD_GLOBAL_FAULTS:
       return query_param(pipe, MSM_PARAM_FAULTS, value);
+   case FD_SUSPEND_COUNT:
+      return query_param(pipe, MSM_PARAM_SUSPENDS, value);
    default:
       ERROR_MSG("invalid param id: %d", param);
       return -1;