gallium: replace DRM_CONF_SHARE_FD with PIPE_CAP_DMABUF

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

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

@@ -7,20 +7,9 @@
 #include "state_tracker/drm_driver.h"
 #include "util/xmlpool.h"
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 const struct drm_conf_ret *
 pipe_default_configuration_query(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

src/gallium/auxiliary/util/u_screen.c

@@ -355,6 +355,13 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
    case PIPE_CAP_MAX_FRAMES_IN_FLIGHT:
       return 0;
 
+   case PIPE_CAP_DMABUF:
+#ifdef PIPE_OS_LINUX
+      return 1;
+#else
+      return 0;
+#endif
+
    default:
       unreachable("bad PIPE_CAP_*");
    }

src/gallium/docs/source/screen.rst

@@ -519,6 +519,8 @@ The integer capabilities:
 * ``PIPE_CAP_MAX_FRAMES_IN_FLIGHT``: Maximum number of frames that state
   trackers should allow to be in flight before throttling pipe_context
   execution. 0 = throttling is disabled.
+* ``PIPE_CAP_DMABUF``: Whether Linux DMABUF handles are supported by
+  resource_from_handle and resource_get_handle.
 
 .. _pipe_capf:
 

src/gallium/include/pipe/p_defines.h

@@ -881,6 +881,7 @@ enum pipe_cap
    PIPE_CAP_TGSI_SKIP_SHRINK_IO_ARRAYS,
    PIPE_CAP_IMAGE_LOAD_FORMATTED,
    PIPE_CAP_MAX_FRAMES_IN_FLIGHT,
+   PIPE_CAP_DMABUF,
 };
 
 /**

src/gallium/include/state_tracker/drm_driver.h

@@ -15,8 +15,6 @@ struct pipe_resource;
  * Configuration queries.
  */
 enum drm_conf {
-   /* Can this driver, running on this kernel, import and export dma-buf fds? */
-   DRM_CONF_SHARE_FD, /* DRM_CONF_BOOL. */
    /* XML string describing the available config options. */
    DRM_CONF_XML_OPTIONS, /* DRM_CONF_POINTER */
    DRM_CONF_MAX
@@ -26,8 +24,6 @@ enum drm_conf {
  * Type of configuration answer
  */
 enum drm_conf_type {
-   DRM_CONF_BOOL,
-   DRM_CONF_FLOAT,
    DRM_CONF_POINTER
 };
 
@@ -37,8 +33,6 @@ enum drm_conf_type {
 struct drm_conf_ret {
    enum drm_conf_type type;
    union {
-      bool val_bool;
-      float val_float;
       void *val_pointer;
    } val;
 };

src/gallium/state_trackers/dri/dri2.c

@@ -1908,7 +1908,6 @@ dri2_init_screen(__DRIscreen * sPriv)
    const __DRIconfig **configs;
    struct dri_screen *screen;
    struct pipe_screen *pscreen = NULL;
-   const struct drm_conf_ret *dmabuf_ret;
 
    screen = CALLOC_STRUCT(dri_screen);
    if (!screen)
@@ -1932,13 +1931,11 @@ dri2_init_screen(__DRIscreen * sPriv)
    screen->default_throttle_frames =
       pscreen->get_param(pscreen, PIPE_CAP_MAX_FRAMES_IN_FLIGHT);
 
-   dmabuf_ret = pipe_loader_configuration(screen->dev, DRM_CONF_SHARE_FD);
-
    if (pscreen->resource_create_with_modifiers)
       dri2ImageExtension.createImageWithModifiers =
          dri2_create_image_with_modifiers;
 
-   if (dmabuf_ret && dmabuf_ret->val.val_bool) {
+   if (pscreen->get_param(pscreen, PIPE_CAP_DMABUF)) {
       uint64_t cap;
 
       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&

src/gallium/targets/d3dadapter9/drm.c

@@ -205,7 +205,6 @@ drm_create_adapter( int fd,
     struct d3dadapter9drm_context *ctx = CALLOC_STRUCT(d3dadapter9drm_context);
     HRESULT hr;
     bool different_device;
-    const struct drm_conf_ret *dmabuf_ret = NULL;
     driOptionCache defaultInitOptions;
     driOptionCache userInitOptions;
     int throttling_value_user = -2;
@@ -235,8 +234,7 @@ drm_create_adapter( int fd,
         return D3DERR_DRIVERINTERNALERROR;
     }
 
-    dmabuf_ret = pipe_loader_configuration(ctx->dev, DRM_CONF_SHARE_FD);
-    if (!dmabuf_ret || !dmabuf_ret->val.val_bool) {
+    if (!ctx->base.hal->get_param(ctx->base.hal, PIPE_CAP_DMABUF)) {
         ERR("The driver is not capable of dma-buf sharing."
             "Abandon to load nine state tracker\n");
         drm_destroy(&ctx->base);

src/gallium/targets/pipe-loader/pipe_i915.c

@@ -23,19 +23,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return screen;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

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

@@ -17,19 +17,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return screen;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

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

@@ -17,19 +17,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return screen;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

src/gallium/targets/pipe-loader/pipe_r300.c

@@ -13,19 +13,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return sws ? debug_screen_wrap(sws->screen) : NULL;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

src/gallium/targets/pipe-loader/pipe_r600.c

@@ -13,19 +13,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return rw ? debug_screen_wrap(rw->screen) : NULL;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }
 

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

@@ -20,11 +20,6 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return rw ? debug_screen_wrap(rw->screen) : NULL;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
    static const struct drm_conf_ret xml_options_ret = {
@@ -34,8 +29,6 @@ static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
    };
 
    switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
    case DRM_CONF_XML_OPTIONS:
       return &xml_options_ret;
    default:

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

@@ -23,19 +23,8 @@ create_screen(int fd, const struct pipe_screen_config *config)
    return screen;
 }
 
-static const struct drm_conf_ret share_fd_ret = {
-   .type = DRM_CONF_BOOL,
-   .val.val_bool = true,
-};
-
 static const struct drm_conf_ret *drm_configuration(enum drm_conf conf)
 {
-   switch (conf) {
-   case DRM_CONF_SHARE_FD:
-      return &share_fd_ret;
-   default:
-      break;
-   }
    return NULL;
 }