1 files changed, 240 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/egl/drm/native_drm.c b/src/gallium/state_trackers/egl/drm/native_drm.c
new file mode 100644
index 0000000000..8ffdde66ba
--- /dev/null
+++ b/src/gallium/state_trackers/egl/drm/native_drm.c
@@ -0,0 +1,240 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "util/u_memory.h"
+#include "egllog.h"
+
+#include "native_drm.h"
+
+/* see get_drm_screen_name */
+#include <radeon_drm.h>
+#include "radeon/drm/radeon_drm.h"
+
+static boolean
+kms_display_is_format_supported(struct native_display *ndpy,
+                                enum pipe_format fmt, boolean is_color)
+{
+   return ndpy->screen->is_format_supported(ndpy->screen,
+         fmt, PIPE_TEXTURE_2D, 0,
+         (is_color) ? PIPE_BIND_RENDER_TARGET :
+         PIPE_BIND_DEPTH_STENCIL, 0);
+}
+
+static const struct native_config **
+kms_display_get_configs(struct native_display *ndpy, int *num_configs)
+{
+   struct kms_display *kdpy = kms_display(ndpy);
+   const struct native_config **configs;
+
+   /* first time */
+   if (!kdpy->config) {
+      struct native_config *nconf;
+      enum pipe_format format;
+
+      kdpy->config = CALLOC(1, sizeof(*kdpy->config));
+      if (!kdpy->config)
+         return NULL;
+
+      nconf = &kdpy->config->base;
+
+      nconf->buffer_mask =
+         (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
+         (1 << NATIVE_ATTACHMENT_BACK_LEFT);
+
+      format = PIPE_FORMAT_B8G8R8A8_UNORM;
+      if (!kms_display_is_format_supported(&kdpy->base, format, TRUE)) {
+         format = PIPE_FORMAT_A8R8G8B8_UNORM;
+         if (!kms_display_is_format_supported(&kdpy->base, format, TRUE))
+            format = PIPE_FORMAT_NONE;
+      }
+      if (format == PIPE_FORMAT_NONE) {
+         FREE(kdpy->config);
+         kdpy->config = NULL;
+         return NULL;
+      }
+
+      nconf->color_format = format;
+
+      /* support KMS */
+      if (kdpy->resources)
+         nconf->scanout_bit = TRUE;
+   }
+
+   configs = MALLOC(sizeof(*configs));
+   if (configs) {
+      configs[0] = &kdpy->config->base;
+      if (num_configs)
+         *num_configs = 1;
+   }
+
+   return configs;
+}
+
+static int
+kms_display_get_param(struct native_display *ndpy,
+                      enum native_param_type param)
+{
+   int val;
+
+   switch (param) {
+   default:
+      val = 0;
+      break;
+   }
+
+   return val;
+}
+
+static void
+kms_display_destroy(struct native_display *ndpy)
+{
+   struct kms_display *kdpy = kms_display(ndpy);
+
+   if (kdpy->config)
+      FREE(kdpy->config);
+
+   kms_display_fini_modeset(&kdpy->base);
+
+   if (kdpy->base.screen)
+      kdpy->base.screen->destroy(kdpy->base.screen);
+
+   if (kdpy->fd >= 0)
+      close(kdpy->fd);
+
+   FREE(kdpy);
+}
+
+static const char *
+get_drm_screen_name(int fd, drmVersionPtr version)
+{
+   const char *name = version->name;
+
+   if (name && !strcmp(name, "radeon")) {
+      int chip_id;
+      struct drm_radeon_info info;
+
+      memset(&info, 0, sizeof(info));
+      info.request = RADEON_INFO_DEVICE_ID;
+      info.value = pointer_to_intptr(&chip_id);
+      if (drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info)) != 0)
+         return NULL;
+
+      name = is_r3xx(chip_id) ? "r300" : "r600";
+   }
+
+   return name;
+}
+
+/**
+ * Initialize KMS and pipe screen.
+ */
+static boolean
+kms_display_init_screen(struct native_display *ndpy)
+{
+   struct kms_display *kdpy = kms_display(ndpy);
+   drmVersionPtr version;
+   const char *name;
+
+   version = drmGetVersion(kdpy->fd);
+   if (!version) {
+      _eglLog(_EGL_WARNING, "invalid fd %d", kdpy->fd);
+      return FALSE;
+   }
+
+   name = get_drm_screen_name(kdpy->fd, version);
+   if (name) {
+      kdpy->base.screen =
+         kdpy->event_handler->new_drm_screen(&kdpy->base, name, kdpy->fd);
+   }
+   drmFreeVersion(version);
+
+   if (!kdpy->base.screen) {
+      _eglLog(_EGL_WARNING, "failed to create DRM screen");
+      return FALSE;
+   }
+
+   return TRUE;
+}
+
+static struct native_display *
+kms_create_display(int fd, struct native_event_handler *event_handler,
+                   void *user_data)
+{
+   struct kms_display *kdpy;
+
+   kdpy = CALLOC_STRUCT(kms_display);
+   if (!kdpy)
+      return NULL;
+
+   kdpy->fd = fd;
+   kdpy->event_handler = event_handler;
+   kdpy->base.user_data = user_data;
+
+   if (!kms_display_init_screen(&kdpy->base)) {
+      kms_display_destroy(&kdpy->base);
+      return NULL;
+   }
+
+   kdpy->base.destroy = kms_display_destroy;
+   kdpy->base.get_param = kms_display_get_param;
+   kdpy->base.get_configs = kms_display_get_configs;
+
+   kms_display_init_modeset(&kdpy->base);
+
+   return &kdpy->base;
+}
+
+static struct native_display *
+native_create_display(void *dpy, struct native_event_handler *event_handler,
+                      void *user_data)
+{
+   int fd;
+
+   if (dpy) {
+      fd = dup((int) pointer_to_intptr(dpy));
+   }
+   else {
+      fd = open("/dev/dri/card0", O_RDWR);
+   }
+   if (fd < 0)
+      return NULL;
+
+   return kms_create_display(fd, event_handler, user_data);
+}
+
+static const struct native_platform drm_platform = {
+   "DRM", /* name */
+   native_create_display
+};
+
+const struct native_platform *
+native_get_drm_platform(void)
+{
+   return &drm_platform;
+}