freedreno: add DRM_CONF_SHARE_FD

And config query and DRM_CONF_SHARE_FD to both mega-driver and
traditional build configs, so that EGL_EXT_image_dma_buf_import
works.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

src/gallium/auxiliary/target-helpers/inline_drm_helper.h

@@ -465,7 +465,7 @@ dd_configuration(enum drm_conf conf)
 #endif
 #if defined(GALLIUM_FREEDRENO)
    if ((strcmp(driver_name, "kgsl") == 0) || (strcmp(driver_name, "msm") == 0))
-      return NULL;
+      return configuration_query(conf);
    else
 #endif
       return NULL;

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -394,6 +394,8 @@ fd_screen_bo_get_handle(struct pipe_screen *pscreen,
 	} else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
 		whandle->handle = fd_bo_handle(bo);
 		return TRUE;
+	} else if (whandle->type == DRM_API_HANDLE_TYPE_FD) {
+		whandle->handle = fd_bo_dmabuf(bo);
 	} else {
 		return FALSE;
 	}
@@ -407,12 +409,17 @@ fd_screen_bo_from_handle(struct pipe_screen *pscreen,
 	struct fd_screen *screen = fd_screen(pscreen);
 	struct fd_bo *bo;
 
-	if (whandle->type != DRM_API_HANDLE_TYPE_SHARED) {
+	if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
+		bo = fd_bo_from_name(screen->dev, whandle->handle);
+	} else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
+		bo = fd_bo_from_handle(screen->dev, whandle->handle, 0);
+	} else if (whandle->type == DRM_API_HANDLE_TYPE_FD) {
+		bo = fd_bo_from_dmabuf(screen->dev, whandle->handle);
+	} else {
 		DBG("Attempt to import unsupported handle type %d", whandle->type);
 		return NULL;
 	}
 
-	bo = fd_bo_from_name(screen->dev, whandle->handle);
 	if (!bo) {
 		DBG("ref name 0x%08x failed", whandle->handle);
 		return NULL;

src/gallium/targets/pipe-loader/pipe_msm.c

@@ -17,5 +17,28 @@ create_screen(int fd)
    return screen;
 }
 
+static const struct drm_conf_ret throttle_ret = {
+   .type = DRM_CONF_INT,
+   .val.val_int = 2,
+};
+
+static const struct drm_conf_ret share_fd_ret = {
+   .type = DRM_CONF_BOOL,
+   .val.val_int = true,
+};
+
+static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
+{
+   switch (conf) {
+   case DRM_CONF_THROTTLE:
+      return &throttle_ret;
+   case DRM_CONF_SHARE_FD:
+      return &share_fd_ret;
+   default:
+      break;
+   }
+   return NULL;
+}
+
 PUBLIC
-DRM_DRIVER_DESCRIPTOR("msm", "freedreno", create_screen, NULL)
+DRM_DRIVER_DESCRIPTOR("msm", "freedreno", create_screen, drm_configuration)