120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
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* Copyright (C) 2014 Etnaviv Project
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Christian Gmeiner <christian.gmeiner@gmail.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <xf86drm.h>
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#include <xf86atomic.h>
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#include "etnaviv_priv.h"
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#include "etnaviv_drmif.h"
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static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
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struct etna_device *etna_device_new(int fd)
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{
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struct etna_device *dev = calloc(sizeof(*dev), 1);
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if (!dev)
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return NULL;
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atomic_set(&dev->refcnt, 1);
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dev->fd = fd;
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dev->handle_table = drmHashCreate();
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dev->name_table = drmHashCreate();
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etna_bo_cache_init(&dev->bo_cache);
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return dev;
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}
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/* like etna_device_new() but creates it's own private dup() of the fd
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* which is close()d when the device is finalized. */
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struct etna_device *etna_device_new_dup(int fd)
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{
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int dup_fd = dup(fd);
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struct etna_device *dev = etna_device_new(dup_fd);
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if (dev)
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dev->closefd = 1;
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else
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close(dup_fd);
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return dev;
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}
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struct etna_device *etna_device_ref(struct etna_device *dev)
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{
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atomic_inc(&dev->refcnt);
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return dev;
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}
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static void etna_device_del_impl(struct etna_device *dev)
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{
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etna_bo_cache_cleanup(&dev->bo_cache, 0);
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drmHashDestroy(dev->handle_table);
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drmHashDestroy(dev->name_table);
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if (dev->closefd)
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close(dev->fd);
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free(dev);
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}
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drm_private void etna_device_del_locked(struct etna_device *dev)
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{
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if (!atomic_dec_and_test(&dev->refcnt))
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return;
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etna_device_del_impl(dev);
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}
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void etna_device_del(struct etna_device *dev)
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{
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if (!atomic_dec_and_test(&dev->refcnt))
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return;
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pthread_mutex_lock(&table_lock);
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etna_device_del_impl(dev);
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pthread_mutex_unlock(&table_lock);
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}
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int etna_device_fd(struct etna_device *dev)
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{
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return dev->fd;
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}
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