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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2012 Rob Clark <robclark@freedesktop.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 (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:
* Rob Clark <robclark@freedesktop.org>
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "freedreno_drmif.h"
#include "freedreno_priv.h"
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)
{
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);
}
}
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.
*/
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;
}
struct fd_device * fd_device_ref(struct fd_device *dev)
{
atomic_inc(&dev->refcnt);
return 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);
}
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);
}
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