loader: remove loader_get_driver_for_fd() driver_type
[mesa.git] / src / gallium / auxiliary / pipe-loader / pipe_loader_drm.c
index ffeb29906b5a9a80708d521cbf2cad590a15f826..2b7ab2757a1b95a745d431e71bc0deae41ad4cbe 100644 (file)
 #include <xf86drm.h>
 #include <unistd.h>
 
-#ifdef HAVE_PIPE_LOADER_XCB
-
-#include <xcb/dri2.h>
-
-#endif
-
 #include "loader.h"
+#include "target-helpers/drm_helper_public.h"
 #include "state_tracker/drm_driver.h"
 #include "pipe_loader_priv.h"
 
 
 struct pipe_loader_drm_device {
    struct pipe_loader_device base;
+   const struct drm_driver_descriptor *dd;
+#ifndef GALLIUM_STATIC_TARGETS
    struct util_dl_library *lib;
+#endif
    int fd;
 };
 
 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
 
-static struct pipe_loader_ops pipe_loader_drm_ops;
+static const struct pipe_loader_ops pipe_loader_drm_ops;
 
-#ifdef HAVE_PIPE_LOADER_XCB
-
-static xcb_screen_t *
-get_xcb_screen(xcb_screen_iterator_t iter, int screen)
-{
-    for (; iter.rem; --screen, xcb_screen_next(&iter))
-        if (screen == 0)
-            return iter.data;
-
-    return NULL;
-}
+#ifdef GALLIUM_STATIC_TARGETS
+static const struct drm_conf_ret throttle_ret = {
+   DRM_CONF_INT,
+   {2},
+};
 
-#endif
+static const struct drm_conf_ret share_fd_ret = {
+   DRM_CONF_BOOL,
+   {true},
+};
 
-static void
-pipe_loader_drm_x_auth(int fd)
+static inline const struct drm_conf_ret *
+configuration_query(enum drm_conf conf)
 {
-#ifdef HAVE_PIPE_LOADER_XCB
-   /* Try authenticate with the X server to give us access to devices that X
-    * is running on. */
-   xcb_connection_t *xcb_conn;
-   const xcb_setup_t *xcb_setup;
-   xcb_screen_iterator_t s;
-   xcb_dri2_connect_cookie_t connect_cookie;
-   xcb_dri2_connect_reply_t *connect;
-   drm_magic_t magic;
-   xcb_dri2_authenticate_cookie_t authenticate_cookie;
-   xcb_dri2_authenticate_reply_t *authenticate;
-   int screen;
-
-   xcb_conn = xcb_connect(NULL, &screen);
-
-   if(!xcb_conn)
-      return;
-
-   xcb_setup = xcb_get_setup(xcb_conn);
-
-  if (!xcb_setup)
-    goto disconnect;
-
-   s = xcb_setup_roots_iterator(xcb_setup);
-   connect_cookie = xcb_dri2_connect_unchecked(xcb_conn,
-                                               get_xcb_screen(s, screen)->root,
-                                               XCB_DRI2_DRIVER_TYPE_DRI);
-   connect = xcb_dri2_connect_reply(xcb_conn, connect_cookie, NULL);
-
-   if (!connect || connect->driver_name_length
-                   + connect->device_name_length == 0) {
-
-      goto disconnect;
+   switch (conf) {
+   case DRM_CONF_THROTTLE:
+      return &throttle_ret;
+   case DRM_CONF_SHARE_FD:
+      return &share_fd_ret;
+   default:
+      break;
    }
+   return NULL;
+}
 
-   if (drmGetMagic(fd, &magic))
-      goto disconnect;
-
-   authenticate_cookie = xcb_dri2_authenticate_unchecked(xcb_conn,
-                                                         s.data->root,
-                                                         magic);
-   authenticate = xcb_dri2_authenticate_reply(xcb_conn,
-                                              authenticate_cookie,
-                                              NULL);
-   FREE(authenticate);
-
-disconnect:
-   xcb_disconnect(xcb_conn);
-
+static const struct drm_driver_descriptor driver_descriptors[] = {
+    {
+        .driver_name = "i915",
+        .create_screen = pipe_i915_create_screen,
+        .configuration = configuration_query,
+    },
+#ifdef USE_VC4_SIMULATOR
+    /* VC4 simulator and ILO (i965) are mutually exclusive (error at
+     * configure). As the latter is unconditionally added, keep this one above
+     * it.
+     */
+    {
+        .driver_name = "i965",
+        .create_screen = pipe_vc4_create_screen,
+        .configuration = configuration_query,
+    },
+#endif
+    {
+        .driver_name = "i965",
+        .create_screen = pipe_ilo_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "nouveau",
+        .create_screen = pipe_nouveau_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "r300",
+        .create_screen = pipe_r300_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "r600",
+        .create_screen = pipe_r600_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "radeonsi",
+        .create_screen = pipe_radeonsi_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "vmwgfx",
+        .create_screen = pipe_vmwgfx_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "kgsl",
+        .create_screen = pipe_freedreno_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "msm",
+        .create_screen = pipe_freedreno_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "virtio_gpu",
+        .create_screen = pipe_virgl_create_screen,
+        .configuration = configuration_query,
+    },
+    {
+        .driver_name = "vc4",
+        .create_screen = pipe_vc4_create_screen,
+        .configuration = configuration_query,
+    },
+};
 #endif
-}
 
 bool
-pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd,
-                         boolean auth_x)
+pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 {
    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
    int vendor_id, chip_id;
@@ -153,111 +176,77 @@ pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd,
    ddev->base.ops = &pipe_loader_drm_ops;
    ddev->fd = fd;
 
-   if (auth_x)
-      pipe_loader_drm_x_auth(fd);
-
-   ddev->base.driver_name = loader_get_driver_for_fd(fd, _LOADER_GALLIUM);
+   ddev->base.driver_name = loader_get_driver_for_fd(fd);
    if (!ddev->base.driver_name)
       goto fail;
 
+#ifdef GALLIUM_STATIC_TARGETS
+   for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
+      if (strcmp(driver_descriptors[i].driver_name, ddev->base.driver_name) == 0) {
+         ddev->dd = &driver_descriptors[i];
+         break;
+      }
+   }
+   if (!ddev->dd)
+      goto fail;
+#else
+   ddev->lib = pipe_loader_find_module(&ddev->base, PIPE_SEARCH_DIR);
+   if (!ddev->lib)
+      goto fail;
+
+   ddev->dd = (const struct drm_driver_descriptor *)
+      util_dl_get_proc_address(ddev->lib, "driver_descriptor");
+
+   /* sanity check on the driver name */
+   if (!ddev->dd || strcmp(ddev->dd->driver_name, ddev->base.driver_name) != 0)
+      goto fail;
+#endif
+
    *dev = &ddev->base;
    return true;
 
   fail:
+#ifndef GALLIUM_STATIC_TARGETS
+   if (ddev->lib)
+      util_dl_close(ddev->lib);
+#endif
    FREE(ddev);
    return false;
 }
 
-static int
-open_drm_minor(int minor)
-{
-   char path[PATH_MAX];
-   snprintf(path, sizeof(path), DRM_DEV_NAME, DRM_DIR_NAME, minor);
-   return open(path, O_RDWR, 0);
-}
-
 static int
 open_drm_render_node_minor(int minor)
 {
    char path[PATH_MAX];
    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
             minor);
-   return open(path, O_RDWR, 0);
+   return loader_open_device(path);
 }
 
 int
 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 {
-   int i, k, fd, num_render_node_devs;
-   int j = 0;
+   int i, j, fd;
 
-   struct {
-      unsigned vendor_id;
-      unsigned chip_id;
-   } render_node_devs[DRM_RENDER_NODE_MAX_NODES];
-
-   /* Look for render nodes first */
    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
-      fd = open_drm_render_node_minor(i);
       struct pipe_loader_device *dev;
-      if (fd < 0)
-         continue;
-
-      if (!pipe_loader_drm_probe_fd(&dev, fd, false)) {
-         close(fd);
-         continue;
-      }
-
-      render_node_devs[j].vendor_id = dev->u.pci.vendor_id;
-      render_node_devs[j].chip_id = dev->u.pci.chip_id;
-
-      if (j < ndev) {
-         devs[j] = dev;
-      } else {
-         close(fd);
-         dev->ops->release(&dev);
-      }
-      j++;
-   }
-
-   num_render_node_devs = j;
 
-   /* Next look for drm devices. */
-   for (i = 0; i < DRM_MAX_MINOR; i++) {
-      struct pipe_loader_device *dev;
-      boolean duplicate = FALSE;
-      fd = open_drm_minor(i);
+      fd = open_drm_render_node_minor(i);
       if (fd < 0)
          continue;
 
-      if (!pipe_loader_drm_probe_fd(&dev, fd, true)) {
+      if (!pipe_loader_drm_probe_fd(&dev, fd)) {
          close(fd);
          continue;
       }
 
-      /* Check to make sure we aren't already accessing this device via
-       * render nodes.
-       */
-      for (k = 0; k < num_render_node_devs; k++) {
-         if (dev->u.pci.vendor_id == render_node_devs[k].vendor_id &&
-             dev->u.pci.chip_id == render_node_devs[k].chip_id) {
-            close(fd);
-            dev->ops->release(&dev);
-            duplicate = TRUE;
-            break;
-         }
-      }
-
-      if (duplicate)
-         continue;
-
       if (j < ndev) {
          devs[j] = dev;
       } else {
+         close(fd);
          dev->ops->release(&dev);
       }
-
       j++;
    }
 
@@ -269,8 +258,10 @@ pipe_loader_drm_release(struct pipe_loader_device **dev)
 {
    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 
+#ifndef GALLIUM_STATIC_TARGETS
    if (ddev->lib)
       util_dl_close(ddev->lib);
+#endif
 
    close(ddev->fd);
    FREE(ddev->base.driver_name);
@@ -283,47 +274,22 @@ pipe_loader_drm_configuration(struct pipe_loader_device *dev,
                               enum drm_conf conf)
 {
    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
-   const struct drm_driver_descriptor *dd;
 
-   if (!ddev->lib)
+   if (!ddev->dd->configuration)
       return NULL;
 
-   dd = (const struct drm_driver_descriptor *)
-      util_dl_get_proc_address(ddev->lib, "driver_descriptor");
-
-   /* sanity check on the name */
-   if (!dd || strcmp(dd->name, ddev->base.driver_name) != 0)
-      return NULL;
-
-   if (!dd->configuration)
-      return NULL;
-
-   return dd->configuration(conf);
+   return ddev->dd->configuration(conf);
 }
 
 static struct pipe_screen *
-pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
-                              const char *library_paths)
+pipe_loader_drm_create_screen(struct pipe_loader_device *dev)
 {
    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
-   const struct drm_driver_descriptor *dd;
-
-   if (!ddev->lib)
-      ddev->lib = pipe_loader_find_module(dev, library_paths);
-   if (!ddev->lib)
-      return NULL;
-
-   dd = (const struct drm_driver_descriptor *)
-      util_dl_get_proc_address(ddev->lib, "driver_descriptor");
-
-   /* sanity check on the name */
-   if (!dd || strcmp(dd->name, ddev->base.driver_name) != 0)
-      return NULL;
 
-   return dd->create_screen(ddev->fd);
+   return ddev->dd->create_screen(ddev->fd);
 }
 
-static struct pipe_loader_ops pipe_loader_drm_ops = {
+static const struct pipe_loader_ops pipe_loader_drm_ops = {
    .create_screen = pipe_loader_drm_create_screen,
    .configuration = pipe_loader_drm_configuration,
    .release = pipe_loader_drm_release