146 lines
3.8 KiB
C
146 lines
3.8 KiB
C
/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
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/*
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* Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
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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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* Rob Clark <robclark@freedesktop.org>
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "freedreno_drmif.h"
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#include "freedreno_priv.h"
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static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
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struct fd_device * kgsl_device_new(int fd);
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struct fd_device * msm_device_new(int fd);
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drm_public struct fd_device * fd_device_new(int fd)
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{
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struct fd_device *dev;
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drmVersionPtr version;
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/* figure out if we are kgsl or msm drm driver: */
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version = drmGetVersion(fd);
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if (!version) {
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ERROR_MSG("cannot get version: %s", strerror(errno));
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return NULL;
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}
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if (!strcmp(version->name, "msm")) {
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DEBUG_MSG("msm DRM device");
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if (version->version_major != 1) {
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ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
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version->version_minor, version->version_patchlevel);
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dev = NULL;
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goto out;
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}
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dev = msm_device_new(fd);
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dev->version = version->version_minor;
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#if HAVE_FREEDRENO_KGSL
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} else if (!strcmp(version->name, "kgsl")) {
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DEBUG_MSG("kgsl DRM device");
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dev = kgsl_device_new(fd);
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#endif
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} else {
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ERROR_MSG("unknown device: %s", version->name);
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dev = NULL;
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}
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out:
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drmFreeVersion(version);
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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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fd_bo_cache_init(&dev->bo_cache, FALSE);
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fd_bo_cache_init(&dev->ring_cache, TRUE);
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return dev;
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}
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/* like fd_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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*/
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drm_public struct fd_device * fd_device_new_dup(int fd)
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{
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int dup_fd = dup(fd);
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struct fd_device *dev = fd_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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drm_public struct fd_device * fd_device_ref(struct fd_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 fd_device_del_impl(struct fd_device *dev)
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{
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int close_fd = dev->closefd ? dev->fd : -1;
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fd_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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dev->funcs->destroy(dev);
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if (close_fd >= 0)
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close(close_fd);
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}
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drm_private void fd_device_del_locked(struct fd_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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fd_device_del_impl(dev);
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}
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drm_public void fd_device_del(struct fd_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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fd_device_del_impl(dev);
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pthread_mutex_unlock(&table_lock);
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}
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drm_public int fd_device_fd(struct fd_device *dev)
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{
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return dev->fd;
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}
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drm_public enum fd_version fd_device_version(struct fd_device *dev)
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{
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return dev->version;
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}
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