/* -*- 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"
drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
drm_private void bo_del(struct fd_bo *bo);
/* 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);
/* don't break the bucket if this bo was found in one */
list_delinit(&bo->list);
}
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);
list_inithead(&bo->list);
/* add ourself into the handle table: */
drmHashInsert(dev->handle_table, handle, bo);
return bo;
}
static struct fd_bo *
bo_new(struct fd_device *dev, uint32_t size, uint32_t flags,
struct fd_bo_cache *cache)
{
struct fd_bo *bo = NULL;
uint32_t handle;
int ret;
bo = fd_bo_cache_alloc(cache, &size, flags);
if (bo)
return bo;
ret = dev->funcs->bo_new_handle(dev, size, flags, &handle);
if (ret)
return NULL;
pthread_mutex_lock(&table_lock);
bo = bo_from_handle(dev, size, handle);
pthread_mutex_unlock(&table_lock);
VG_BO_ALLOC(bo);
return bo;
}
drm_public struct fd_bo *
fd_bo_new(struct fd_device *dev, uint32_t size, uint32_t flags)
{
struct fd_bo *bo = bo_new(dev, size, flags, &dev->bo_cache);
if (bo)
bo->bo_reuse = BO_CACHE;
return bo;
}
/* internal function to allocate bo's that use the ringbuffer cache
* instead of the normal bo_cache. The purpose is, because cmdstream
* bo's get vmap'd on the kernel side, and that is expensive, we want
* to re-use cmdstream bo's for cmdstream and not unrelated purposes.
*/
drm_private struct fd_bo *
fd_bo_new_ring(struct fd_device *dev, uint32_t size, uint32_t flags)
{
struct fd_bo *bo = bo_new(dev, size, flags, &dev->ring_cache);
if (bo)
bo->bo_reuse = RING_CACHE;
return bo;
}
drm_public 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 = lookup_bo(dev->handle_table, handle);
if (bo)
goto out_unlock;
bo = bo_from_handle(dev, size, handle);
VG_BO_ALLOC(bo);
out_unlock:
pthread_mutex_unlock(&table_lock);
return bo;
}
drm_public struct fd_bo *
fd_bo_from_dmabuf(struct fd_device *dev, int fd)
{
int ret, size;
uint32_t handle;
struct fd_bo *bo;
pthread_mutex_lock(&table_lock);
ret = drmPrimeFDToHandle(dev->fd, fd, &handle);
if (ret) {
pthread_mutex_unlock(&table_lock);
return NULL;
}
bo = lookup_bo(dev->handle_table, handle);
if (bo)
goto out_unlock;
/* lseek() to get bo size */
size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_CUR);
bo = bo_from_handle(dev, size, handle);
VG_BO_ALLOC(bo);
out_unlock:
pthread_mutex_unlock(&table_lock);
return bo;
}
drm_public 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);
VG_BO_ALLOC(bo);
}
out_unlock:
pthread_mutex_unlock(&table_lock);
return bo;
}
drm_public uint64_t fd_bo_get_iova(struct fd_bo *bo)
{
return bo->funcs->iova(bo);
}
drm_public void fd_bo_put_iova(struct fd_bo *bo)
{
/* currently a no-op */
}
drm_public struct fd_bo * fd_bo_ref(struct fd_bo *bo)
{
atomic_inc(&bo->refcnt);
return bo;
}
drm_public void fd_bo_del(struct fd_bo *bo)
{
struct fd_device *dev = bo->dev;
if (!atomic_dec_and_test(&bo->refcnt))
return;
pthread_mutex_lock(&table_lock);
if ((bo->bo_reuse == BO_CACHE) && (fd_bo_cache_free(&dev->bo_cache, bo) == 0))
goto out;
if ((bo->bo_reuse == RING_CACHE) && (fd_bo_cache_free(&dev->ring_cache, bo) == 0))
goto out;
bo_del(bo);
fd_device_del_locked(dev);
out:
pthread_mutex_unlock(&table_lock);
}
/* Called under table_lock */
drm_private void bo_del(struct fd_bo *bo)
{
VG_BO_FREE(bo);
if (bo->map)
drm_munmap(bo->map, bo->size);
/* TODO probably bo's in bucket list get removed from
* handle table??
*/
if (bo->handle) {
struct drm_gem_close req = {
.handle = bo->handle,
};
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);
}
bo->funcs->destroy(bo);
}
drm_public 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);
bo->bo_reuse = NO_CACHE;
}
*name = bo->name;
return 0;
}
drm_public uint32_t fd_bo_handle(struct fd_bo *bo)
{
return bo->handle;
}
drm_public int fd_bo_dmabuf(struct fd_bo *bo)
{
int ret, prime_fd;
ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
&prime_fd);
if (ret) {
ERROR_MSG("failed to get dmabuf fd: %d", ret);
return ret;
}
bo->bo_reuse = NO_CACHE;
return prime_fd;
}
drm_public uint32_t fd_bo_size(struct fd_bo *bo)
{
return bo->size;
}
drm_public 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 = drm_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.. */
drm_public int fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
return bo->funcs->cpu_prep(bo, pipe, op);
}
drm_public void fd_bo_cpu_fini(struct fd_bo *bo)
{
bo->funcs->cpu_fini(bo);
}
#if !HAVE_FREEDRENO_KGSL
drm_public struct fd_bo * fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
{
return NULL;
}
#endif