etnaviv: Add libdrm code as of 922d92994267743266024ecceb734ce0ebbca808

[mesa.git] / src / etnaviv / drm / etnaviv_device.c

diff --git a/src/etnaviv/drm/etnaviv_device.c b/src/etnaviv/drm/etnaviv_device.c
new file mode 100644 (file)
index 0000000..699df25
--- /dev/null
+++ b/src/etnaviv/drm/etnaviv_device.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2014 Etnaviv Project
+ *
+ * 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 (including the next
+ * paragraph) 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.
+ *
+ * Authors:
+ *    Christian Gmeiner <christian.gmeiner@gmail.com>
+ */
+
+#include <stdlib.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include <xf86drm.h>
+#include <xf86atomic.h>
+
+#include "etnaviv_priv.h"
+#include "etnaviv_drmif.h"
+
+static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
+
+drm_public struct etna_device *etna_device_new(int fd)
+{
+       struct etna_device *dev = calloc(sizeof(*dev), 1);
+
+       if (!dev)
+               return NULL;
+
+       atomic_set(&dev->refcnt, 1);
+       dev->fd = fd;
+       dev->handle_table = drmHashCreate();
+       dev->name_table = drmHashCreate();
+       etna_bo_cache_init(&dev->bo_cache);
+
+       return dev;
+}
+
+/* like etna_device_new() but creates it's own private dup() of the fd
+ * which is close()d when the device is finalized. */
+drm_public struct etna_device *etna_device_new_dup(int fd)
+{
+       int dup_fd = dup(fd);
+       struct etna_device *dev = etna_device_new(dup_fd);
+
+       if (dev)
+               dev->closefd = 1;
+       else
+               close(dup_fd);
+
+       return dev;
+}
+
+drm_public struct etna_device *etna_device_ref(struct etna_device *dev)
+{
+       atomic_inc(&dev->refcnt);
+
+       return dev;
+}
+
+static void etna_device_del_impl(struct etna_device *dev)
+{
+       etna_bo_cache_cleanup(&dev->bo_cache, 0);
+       drmHashDestroy(dev->handle_table);
+       drmHashDestroy(dev->name_table);
+
+       if (dev->closefd)
+               close(dev->fd);
+
+       free(dev);
+}
+
+drm_private void etna_device_del_locked(struct etna_device *dev)
+{
+       if (!atomic_dec_and_test(&dev->refcnt))
+               return;
+
+       etna_device_del_impl(dev);
+}
+
+drm_public void etna_device_del(struct etna_device *dev)
+{
+       if (!atomic_dec_and_test(&dev->refcnt))
+               return;
+
+       pthread_mutex_lock(&table_lock);
+       etna_device_del_impl(dev);
+       pthread_mutex_unlock(&table_lock);
+}
+
+drm_public int etna_device_fd(struct etna_device *dev)
+{
+   return dev->fd;
+}