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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 "freedreno_drmif.h"
#include "freedreno_priv.h"
static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
/* set buffer name, and add to table, call w/ table_lock held: */
static void set_name(struct fd_bo *bo, uint32_t name)
{
bo->name = name;
/* add ourself into the handle table: */
drmHashInsert(bo->dev->name_table, name, bo);
}
/* lookup a buffer, call w/ table_lock held: */
static struct fd_bo * lookup_bo(void *tbl, uint32_t key)
{
struct fd_bo *bo = NULL;
if (!drmHashLookup(tbl, key, (void **)&bo)) {
/* found, incr refcnt and return: */
bo = fd_bo_ref(bo);
}
return bo;
}
/* allocate a new buffer object, call w/ table_lock held */
static struct fd_bo * bo_from_handle(struct fd_device *dev,
uint32_t size, uint32_t handle)
{
struct fd_bo *bo;
bo = dev->funcs->bo_from_handle(dev, size, handle);
if (!bo) {
struct drm_gem_close req = {
.handle = handle,
};
drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
return NULL;
}
bo->dev = fd_device_ref(dev);
bo->size = size;
bo->handle = handle;
atomic_set(&bo->refcnt, 1);
/* add ourself into the handle table: */
drmHashInsert(dev->handle_table, handle, bo);
return bo;
}
struct fd_bo * fd_bo_new(struct fd_device *dev,
uint32_t size, uint32_t flags)
{
struct fd_bo *bo = NULL;
uint32_t handle;
int ret;
ret = dev->funcs->bo_new_handle(dev, ALIGN(size, 4096), flags, &handle);
if (ret)
return NULL;
pthread_mutex_lock(&table_lock);
bo = bo_from_handle(dev, size, handle);
pthread_mutex_unlock(&table_lock);
return bo;
}
struct fd_bo *fd_bo_from_handle(struct fd_device *dev,
uint32_t handle, uint32_t size)
{
struct fd_bo *bo = NULL;
pthread_mutex_lock(&table_lock);
bo = bo_from_handle(dev, size, handle);
pthread_mutex_unlock(&table_lock);
return bo;
}
struct fd_bo * fd_bo_from_name(struct fd_device *dev, uint32_t name)
{
struct drm_gem_open req = {
.name = name,
};
struct fd_bo *bo;
pthread_mutex_lock(&table_lock);
/* check name table first, to see if bo is already open: */
bo = lookup_bo(dev->name_table, name);
if (bo)
goto out_unlock;
if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) {
ERROR_MSG("gem-open failed: %s", strerror(errno));
goto out_unlock;
}
bo = lookup_bo(dev->handle_table, req.handle);
if (bo)
goto out_unlock;
bo = bo_from_handle(dev, req.size, req.handle);
if (bo)
set_name(bo, name);
out_unlock:
pthread_mutex_unlock(&table_lock);
return bo;
}
struct fd_bo * fd_bo_ref(struct fd_bo *bo)
{
atomic_inc(&bo->refcnt);
return bo;
}
void fd_bo_del(struct fd_bo *bo)
{
struct fd_device *dev;
if (!atomic_dec_and_test(&bo->refcnt))
return;
if (bo->map)
munmap(bo->map, bo->size);
if (bo->handle) {
struct drm_gem_close req = {
.handle = bo->handle,
};
pthread_mutex_lock(&table_lock);
drmHashDelete(bo->dev->handle_table, bo->handle);
if (bo->name)
drmHashDelete(bo->dev->name_table, bo->name);
drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
pthread_mutex_unlock(&table_lock);
}
dev = bo->dev;
bo->funcs->destroy(bo);
fd_device_del(dev);
}
int fd_bo_get_name(struct fd_bo *bo, uint32_t *name)
{
if (!bo->name) {
struct drm_gem_flink req = {
.handle = bo->handle,
};
int ret;
ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req);
if (ret) {
return ret;
}
pthread_mutex_lock(&table_lock);
set_name(bo, req.name);
pthread_mutex_unlock(&table_lock);
}
*name = bo->name;
return 0;
}
uint32_t fd_bo_handle(struct fd_bo *bo)
{
return bo->handle;
}
uint32_t fd_bo_size(struct fd_bo *bo)
{
return bo->size;
}
void * fd_bo_map(struct fd_bo *bo)
{
if (!bo->map) {
uint64_t offset;
int ret;
ret = bo->funcs->offset(bo, &offset);
if (ret) {
return NULL;
}
bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
bo->dev->fd, offset);
if (bo->map == MAP_FAILED) {
ERROR_MSG("mmap failed: %s", strerror(errno));
bo->map = NULL;
}
}
return bo->map;
}
/* a bit odd to take the pipe as an arg, but it's a, umm, quirk of kgsl.. */
int fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
return bo->funcs->cpu_prep(bo, pipe, op);
}
void fd_bo_cpu_fini(struct fd_bo *bo)
{
bo->funcs->cpu_fini(bo);
}
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