etnaviv: Pass npu to etna_screen_create in a separate parameter

Allow to pass both gpu and npu to etna_screen_create() separately,
in preparetion for devices with both 3D GPU and NPU.
Iterate over all cores or until both GPU and NPU are found.

If no 3D GPU was found, screen->gpu will be set to the npu as well,
so nothing changes for NPU-only devices.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28921>

src/gallium/drivers/etnaviv/etnaviv_screen.c

@@ -106,6 +106,9 @@ etna_screen_destroy(struct pipe_screen *pscreen)
    if (screen->pipe)
       etna_pipe_del(screen->pipe);
 
+   if (screen->npu && screen->npu != screen->gpu)
+      etna_gpu_del(screen->npu);
+
    if (screen->gpu)
       etna_gpu_del(screen->gpu);
 
@@ -1059,7 +1062,7 @@ etna_screen_get_fd(struct pipe_screen *pscreen)
 
 struct pipe_screen *
 etna_screen_create(struct etna_device *dev, struct etna_gpu *gpu,
-                   struct renderonly *ro)
+                   struct etna_gpu *npu, struct renderonly *ro)
 {
    struct etna_screen *screen = CALLOC_STRUCT(etna_screen);
    struct pipe_screen *pscreen;
@@ -1067,9 +1070,13 @@ etna_screen_create(struct etna_device *dev, struct etna_gpu *gpu,
    if (!screen)
       return NULL;
 
+   if (!gpu)
+      gpu = npu;
+
    pscreen = &screen->base;
    screen->dev = dev;
    screen->gpu = gpu;
+   screen->npu = npu;
    screen->ro = ro;
    screen->info = etna_gpu_get_core_info(gpu);
 

src/gallium/drivers/etnaviv/etnaviv_screen.h

@@ -49,6 +49,7 @@ struct etna_screen {
 
    struct etna_device *dev;
    struct etna_gpu *gpu;
+   struct etna_gpu *npu;
    struct etna_pipe *pipe;
    struct etna_perfmon *perfmon;
    struct renderonly *ro;
@@ -90,7 +91,7 @@ etna_screen_bo_from_handle(struct pipe_screen *pscreen,
 
 struct pipe_screen *
 etna_screen_create(struct etna_device *dev, struct etna_gpu *gpu,
-                   struct renderonly *ro);
+                   struct etna_gpu *npu, struct renderonly *ro);
 
 static inline size_t
 etna_screen_get_tile_size(struct etna_screen *screen, uint8_t ts_mode,

src/gallium/winsys/etnaviv/drm/etnaviv_drm_winsys.c

@@ -38,7 +38,8 @@ static struct pipe_screen *
 screen_create(int gpu_fd, const struct pipe_screen_config *config, struct renderonly *ro)
 {
    struct etna_device *dev;
-   struct etna_gpu *gpu;
+   struct etna_gpu *gpu = NULL;
+   struct etna_gpu *npu = NULL;
    int i;
 
    dev = etna_device_new_dup(gpu_fd);
@@ -47,21 +48,41 @@ screen_create(int gpu_fd, const struct pipe_screen_config *config, struct render
       return NULL;
    }
 
-   for (i = 0;; i++) {
-      gpu = etna_gpu_new(dev, i);
-      if (!gpu) {
-         fprintf(stderr, "Error creating gpu\n");
-         return NULL;
-      }
+   for (i = 0; !gpu || !npu; i++) {
+      struct etna_core_info *info;
+      struct etna_gpu *core = etna_gpu_new(dev, i);
 
-      /* Look for a 3D capable GPU */
-      if (etna_core_has_feature(etna_gpu_get_core_info(gpu), ETNA_FEATURE_PIPE_3D))
+      if (!core)
          break;
 
-      etna_gpu_del(gpu);
+      info = etna_gpu_get_core_info(core);
+      switch (info->type) {
+      case ETNA_CORE_GPU:
+         /* Look for a 3D capable GPU */
+         if (!gpu && etna_core_has_feature(info, ETNA_FEATURE_PIPE_3D)) {
+            gpu = core;
+            continue;
+         }
+         break;
+      case ETNA_CORE_NPU:
+         if (!npu) {
+            npu = core;
+            continue;
+         }
+         break;
+      default:
+         unreachable("invalid core type");
+      }
+
+      etna_gpu_del(core);
    }
 
-   return etna_screen_create(dev, gpu, ro);
+   if (!gpu && !npu) {
+      fprintf(stderr, "Error creating gpu or npu\n");
+      return NULL;
+   }
+
+   return etna_screen_create(dev, gpu, npu, ro);
 }
 
 struct pipe_screen *