[Nouveau] [RFC PATCH 8/8] nv50: enable GL_AMD_performance_monitor

[Samuel Pitoiset]

This exposes a group of global performance counters that enables
GL_AMD_performance_monitor. All piglit tests are okay.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
 src/gallium/drivers/nouveau/nv50/nv50_query.c  | 35 ++++++++++++++++++++++++++
 src/gallium/drivers/nouveau/nv50/nv50_screen.c |  1 +
 src/gallium/drivers/nouveau/nv50/nv50_screen.h |  6 +++++
 3 files changed, 42 insertions(+)

diff --git a/src/gallium/drivers/nouveau/nv50/nv50_query.c b/src/gallium/drivers/nouveau/nv50/nv50_query.c
index 062d427..6638e82 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_query.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_query.c
@@ -1566,6 +1566,7 @@ nv50_screen_get_driver_query_info(struct pipe_screen *pscreen,
 
          info->name = cfg->event->name;
          info->query_type = NV50_HW_PM_QUERY(id);
+         info->group_id = NV50_HW_PM_QUERY_GROUP;
          info->max_value.u64 =
             (cfg->event->display == NV50_HW_PM_EVENT_DISPLAY_RATIO) ? 100 : 0;
          return 1;
@@ -1576,6 +1577,40 @@ nv50_screen_get_driver_query_info(struct pipe_screen *pscreen,
    return 0;
 }
 
+int
+nv50_screen_get_driver_query_group_info(struct pipe_screen *pscreen,
+                                        unsigned id,
+                                        struct pipe_driver_query_group_info *info)
+{
+   struct nv50_screen *screen = nv50_screen(pscreen);
+   int count = 0;
+
+   // TODO: Check DRM version when nvif will be merged in libdrm!
+   if (screen->base.perfmon) {
+      count++; /* NV50_HW_PM_QUERY_GROUP */
+   }
+
+   if (!info)
+      return count;
+
+   if (id == NV50_HW_PM_QUERY_GROUP) {
+      if (screen->base.perfmon) {
+         info->name = "Global performance counters";
+         info->type = PIPE_DRIVER_QUERY_GROUP_TYPE_GPU;
+         info->num_queries = NV50_HW_PM_QUERY_COUNT;
+         info->max_active_queries = 1; /* TODO: get rid of this limitation! */
+         return 1;
+      }
+   }
+
+   /* user asked for info about non-existing query group */
+   info->name = "this_is_not_the_query_group_you_are_looking_for";
+   info->max_active_queries = 0;
+   info->num_queries = 0;
+   info->type = 0;
+   return 0;
+}
+
 void
 nv50_init_query_functions(struct nv50_context *nv50)
 {
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index f07798e..dfe20c9 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -746,6 +746,7 @@ nv50_screen_create(struct nouveau_device *dev)
    pscreen->get_shader_param = nv50_screen_get_shader_param;
    pscreen->get_paramf = nv50_screen_get_paramf;
    pscreen->get_driver_query_info = nv50_screen_get_driver_query_info;
+   pscreen->get_driver_query_group_info = nv50_screen_get_driver_query_group_info;
 
    nv50_screen_init_resource_functions(pscreen);
 
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.h b/src/gallium/drivers/nouveau/nv50/nv50_screen.h
index 69127c0..807ae0e 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.h
@@ -114,6 +114,9 @@ nv50_screen(struct pipe_screen *screen)
    return (struct nv50_screen *)screen;
 }
 
+/* Hardware global performance counters groups. */
+#define NV50_HW_PM_QUERY_GROUP 0
+
 /* Hardware global performance counters. */
 #define NV50_HW_PM_QUERY_COUNT  24
 #define NV50_HW_PM_QUERY(i)    (PIPE_QUERY_DRIVER_SPECIFIC + (i))
@@ -146,6 +149,9 @@ nv50_screen(struct pipe_screen *screen)
 int nv50_screen_get_driver_query_info(struct pipe_screen *, unsigned,
                                       struct pipe_driver_query_info *);
 
+int nv50_screen_get_driver_query_group_info(struct pipe_screen *, unsigned,
+                                            struct pipe_driver_query_group_info *);
+
 boolean nv50_blitter_create(struct nv50_screen *);
 void nv50_blitter_destroy(struct nv50_screen *);
 
-- 
2.4.4