freedreno: use drm_mmap/drm_munmap wrappers

[platform/upstream/libdrm.git] / freedreno / freedreno_device.c

diff --git a/freedreno/freedreno_device.c b/freedreno/freedreno_device.c
index 0a9ef9f..2d3aa33 100644 (file)
--- a/freedreno/freedreno_device.c
+++ b/freedreno/freedreno_device.c
@@ -26,20 +26,131 @@
  *    Rob Clark <robclark@freedesktop.org>
  */
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 #include "freedreno_drmif.h"
 #include "freedreno_priv.h"
 
-struct fd_device * fd_device_new(int fd)
+static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
+
+struct fd_device * kgsl_device_new(int fd);
+struct fd_device * msm_device_new(int fd);
+
+static void
+add_bucket(struct fd_device *dev, int size)
 {
-       struct fd_device *dev = calloc(1, sizeof(*dev));
+       unsigned int i = dev->num_buckets;
+
+       assert(i < ARRAY_SIZE(dev->cache_bucket));
+
+       list_inithead(&dev->cache_bucket[i].list);
+       dev->cache_bucket[i].size = size;
+       dev->num_buckets++;
+}
+
+static void
+init_cache_buckets(struct fd_device *dev)
+{
+       unsigned long size, cache_max_size = 64 * 1024 * 1024;
+
+       /* OK, so power of two buckets was too wasteful of memory.
+        * Give 3 other sizes between each power of two, to hopefully
+        * cover things accurately enough.  (The alternative is
+        * probably to just go for exact matching of sizes, and assume
+        * that for things like composited window resize the tiled
+        * width/height alignment and rounding of sizes to pages will
+        * get us useful cache hit rates anyway)
+        */
+       add_bucket(dev, 4096);
+       add_bucket(dev, 4096 * 2);
+       add_bucket(dev, 4096 * 3);
+
+       /* Initialize the linked lists for BO reuse cache. */
+       for (size = 4 * 4096; size <= cache_max_size; size *= 2) {
+               add_bucket(dev, size);
+               add_bucket(dev, size + size * 1 / 4);
+               add_bucket(dev, size + size * 2 / 4);
+               add_bucket(dev, size + size * 3 / 4);
+       }
+}
+
+drm_public struct fd_device * fd_device_new(int fd)
+{
+       struct fd_device *dev;
+       drmVersionPtr version;
+
+       /* figure out if we are kgsl or msm drm driver: */
+       version = drmGetVersion(fd);
+       if (!version) {
+               ERROR_MSG("cannot get version: %s", strerror(errno));
+               return NULL;
+       }
+
+       if (!strcmp(version->name, "kgsl")) {
+               DEBUG_MSG("kgsl DRM device");
+               dev = kgsl_device_new(fd);
+       } else if (!strcmp(version->name, "msm")) {
+               DEBUG_MSG("msm DRM device");
+               dev = msm_device_new(fd);
+       } else {
+               ERROR_MSG("unknown device: %s", version->name);
+               dev = NULL;
+       }
+       drmFreeVersion(version);
+
        if (!dev)
                return NULL;
+
+       atomic_set(&dev->refcnt, 1);
        dev->fd = fd;
+       dev->handle_table = drmHashCreate();
+       dev->name_table = drmHashCreate();
+       init_cache_buckets(dev);
+
+       return dev;
+}
+
+/* like fd_device_new() but creates it's own private dup() of the fd
+ * which is close()d when the device is finalized.
+ */
+drm_public struct fd_device * fd_device_new_dup(int fd)
+{
+       struct fd_device *dev = fd_device_new(dup(fd));
+       if (dev)
+               dev->closefd = 1;
+       return dev;
+}
+
+drm_public struct fd_device * fd_device_ref(struct fd_device *dev)
+{
+       atomic_inc(&dev->refcnt);
        return dev;
 }
 
-void fd_device_del(struct fd_device *dev)
+static void fd_device_del_impl(struct fd_device *dev)
+{
+       fd_cleanup_bo_cache(dev, 0);
+       drmHashDestroy(dev->handle_table);
+       drmHashDestroy(dev->name_table);
+       if (dev->closefd)
+               close(dev->fd);
+       dev->funcs->destroy(dev);
+}
+
+void fd_device_del_locked(struct fd_device *dev)
 {
-       free(dev);
+       if (!atomic_dec_and_test(&dev->refcnt))
+               return;
+       fd_device_del_impl(dev);
 }
 
+drm_public void fd_device_del(struct fd_device *dev)
+{
+       if (!atomic_dec_and_test(&dev->refcnt))
+               return;
+       pthread_mutex_lock(&table_lock);
+       fd_device_del_impl(dev);
+       pthread_mutex_unlock(&table_lock);
+}