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 901d066..2d3aa33 100644 (file)
--- a/freedreno/freedreno_device.c
+++ b/freedreno/freedreno_device.c
@@ -34,69 +34,123 @@
 #include "freedreno_priv.h"
 
 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
-static void * dev_table;
 
-static struct fd_device * fd_device_new_impl(int fd)
+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));
-       if (!dev)
-               return NULL;
-       atomic_set(&dev->refcnt, 1);
-       dev->fd = fd;
-       dev->handle_table = drmHashCreate();
-       dev->name_table = drmHashCreate();
-       return 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++;
 }
 
-/* use inode for key into dev_table, rather than fd, to avoid getting
- * confused by multiple-opens:
- */
-static int devkey(int fd)
+static void
+init_cache_buckets(struct fd_device *dev)
 {
-       struct stat s;
-       if (fstat(fd, &s)) {
-               ERROR_MSG("stat failed: %s", strerror(errno));
-               return -1;
+       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);
        }
-       return s.st_ino;
 }
 
-struct fd_device * fd_device_new(int fd)
+drm_public struct fd_device * fd_device_new(int fd)
 {
-       struct fd_device *dev = NULL;
-       int key = devkey(fd);
+       struct fd_device *dev;
+       drmVersionPtr version;
 
-       pthread_mutex_lock(&table_lock);
-
-       if (!dev_table)
-               dev_table = drmHashCreate();
+       /* 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 (drmHashLookup(dev_table, key, (void **)&dev)) {
-               dev = fd_device_new_impl(fd);
-               drmHashInsert(dev_table, key, dev);
+       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 {
-               dev = fd_device_ref(dev);
+               ERROR_MSG("unknown device: %s", version->name);
+               dev = NULL;
        }
+       drmFreeVersion(version);
 
-       pthread_mutex_unlock(&table_lock);
+       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;
 }
 
-struct fd_device * fd_device_ref(struct fd_device *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)
+{
+       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);
-       drmHashDestroy(dev->handle_table);
-       drmHashDestroy(dev->name_table);
-       drmHashDelete(dev_table, devkey(dev->fd));
+       fd_device_del_impl(dev);
        pthread_mutex_unlock(&table_lock);
-       free(dev);
 }