winsys/radeon: implement ctx_query_reset_status by copying radeonsi

To make it behave like amdgpu. I'm just trying to move this out of
radeonsi. The radeonsi code will be removed in the next commit.

src/gallium/winsys/radeon/drm/radeon_drm_cs.c

@@ -73,14 +73,32 @@ static void radeon_fence_reference(struct pipe_fence_handle **dst,
 
 static struct radeon_winsys_ctx *radeon_drm_ctx_create(struct radeon_winsys *ws)
 {
-    /* No context support here. Just return the winsys pointer
-     * as the "context". */
-    return (struct radeon_winsys_ctx*)ws;
+    struct radeon_ctx *ctx = CALLOC_STRUCT(radeon_ctx);
+    if (!ctx)
+        return NULL;
+
+    ctx->ws = (struct radeon_drm_winsys*)ws;
+    ctx->gpu_reset_counter = radeon_drm_get_gpu_reset_counter(ctx->ws);
+    return (struct radeon_winsys_ctx*)ctx;
 }
 
 static void radeon_drm_ctx_destroy(struct radeon_winsys_ctx *ctx)
 {
-    /* No context support here. */
+    FREE(ctx);
+}
+
+static enum pipe_reset_status
+radeon_drm_ctx_query_reset_status(struct radeon_winsys_ctx *rctx)
+{
+    struct radeon_ctx *ctx = (struct radeon_ctx*)rctx;
+
+    unsigned latest = radeon_drm_get_gpu_reset_counter(ctx->ws);
+
+    if (ctx->gpu_reset_counter == latest)
+        return PIPE_NO_RESET;
+
+    ctx->gpu_reset_counter = latest;
+    return PIPE_UNKNOWN_CONTEXT_RESET;
 }
 
 static bool radeon_init_cs_context(struct radeon_cs_context *csc,
@@ -153,7 +171,7 @@ radeon_drm_cs_create(struct radeon_winsys_ctx *ctx,
                      void *flush_ctx,
                      bool stop_exec_on_failure)
 {
-    struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)ctx;
+    struct radeon_drm_winsys *ws = ((struct radeon_ctx*)ctx)->ws;
     struct radeon_drm_cs *cs;
 
     cs = CALLOC_STRUCT(radeon_drm_cs);
@@ -820,6 +838,7 @@ void radeon_drm_cs_init_functions(struct radeon_drm_winsys *ws)
 {
     ws->base.ctx_create = radeon_drm_ctx_create;
     ws->base.ctx_destroy = radeon_drm_ctx_destroy;
+    ws->base.ctx_query_reset_status = radeon_drm_ctx_query_reset_status;
     ws->base.cs_create = radeon_drm_cs_create;
     ws->base.cs_destroy = radeon_drm_cs_destroy;
     ws->base.cs_add_buffer = radeon_drm_cs_add_buffer;

src/gallium/winsys/radeon/drm/radeon_drm_cs.h

@@ -29,6 +29,11 @@
 
 #include "radeon_drm_bo.h"
 
+struct radeon_ctx {
+   struct radeon_drm_winsys *ws;
+   uint32_t gpu_reset_counter;
+};
+
 struct radeon_bo_item {
     struct radeon_bo    *bo;
     union {

src/gallium/winsys/radeon/drm/radeon_drm_winsys.c

@@ -572,7 +572,7 @@ static bool do_winsys_init(struct radeon_drm_winsys *ws)
                                              ws->info.drm_minor >= 38;
     ws->info.si_TA_CS_BC_BASE_ADDR_allowed = ws->info.drm_minor >= 48;
     ws->info.has_bo_metadata = false;
-    ws->info.has_gpu_reset_status_query = false;
+    ws->info.has_gpu_reset_status_query = ws->info.drm_minor >= 43;
     ws->info.has_gpu_reset_counter_query = ws->info.drm_minor >= 43;
     ws->info.has_eqaa_surface_allocator = false;
     ws->info.has_format_bc1_through_bc7 = ws->info.drm_minor >= 31;
@@ -656,6 +656,18 @@ static bool radeon_cs_request_feature(struct radeon_cmdbuf *rcs,
     return false;
 }
 
+uint32_t radeon_drm_get_gpu_reset_counter(struct radeon_drm_winsys *ws)
+{
+    uint64_t retval = 0;
+
+    if (!ws->info.has_gpu_reset_status_query)
+        return 0;
+
+    radeon_get_drm_value(ws->fd, RADEON_INFO_GPU_RESET_COUNTER,
+                         "gpu-reset-counter", (uint32_t*)&retval);
+    return retval;
+}
+
 static uint64_t radeon_query_value(struct radeon_winsys *rws,
                                    enum radeon_value_id value)
 {

src/gallium/winsys/radeon/drm/radeon_drm_winsys.h

@@ -109,6 +109,7 @@ radeon_drm_winsys(struct radeon_winsys *base)
     return (struct radeon_drm_winsys*)base;
 }
 
+uint32_t radeon_drm_get_gpu_reset_counter(struct radeon_drm_winsys *ws);
 void radeon_surface_init_functions(struct radeon_drm_winsys *ws);
 
 #endif