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366 lines
8.1 KiB
366 lines
8.1 KiB
/* -*- 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 "freedreno_drmif.h"
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#include "freedreno_priv.h"
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drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
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drm_private void bo_del(struct fd_bo *bo);
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/* set buffer name, and add to table, call w/ table_lock held: */
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static void set_name(struct fd_bo *bo, uint32_t name)
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{
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bo->name = name;
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/* add ourself into the handle table: */
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drmHashInsert(bo->dev->name_table, name, bo);
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}
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/* lookup a buffer, call w/ table_lock held: */
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static struct fd_bo * lookup_bo(void *tbl, uint32_t key)
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{
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struct fd_bo *bo = NULL;
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if (!drmHashLookup(tbl, key, (void **)&bo)) {
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/* found, incr refcnt and return: */
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bo = fd_bo_ref(bo);
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/* don't break the bucket if this bo was found in one */
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list_delinit(&bo->list);
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}
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return bo;
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}
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/* allocate a new buffer object, call w/ table_lock held */
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static struct fd_bo * bo_from_handle(struct fd_device *dev,
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uint32_t size, uint32_t handle)
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{
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struct fd_bo *bo;
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bo = dev->funcs->bo_from_handle(dev, size, handle);
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if (!bo) {
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struct drm_gem_close req = {
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.handle = handle,
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};
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drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
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return NULL;
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}
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bo->dev = fd_device_ref(dev);
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bo->size = size;
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bo->handle = handle;
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atomic_set(&bo->refcnt, 1);
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list_inithead(&bo->list);
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/* add ourself into the handle table: */
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drmHashInsert(dev->handle_table, handle, bo);
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return bo;
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}
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static struct fd_bo *
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bo_new(struct fd_device *dev, uint32_t size, uint32_t flags,
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struct fd_bo_cache *cache)
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{
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struct fd_bo *bo = NULL;
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uint32_t handle;
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int ret;
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bo = fd_bo_cache_alloc(cache, &size, flags);
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if (bo)
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return bo;
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ret = dev->funcs->bo_new_handle(dev, size, flags, &handle);
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if (ret)
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return NULL;
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pthread_mutex_lock(&table_lock);
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bo = bo_from_handle(dev, size, handle);
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pthread_mutex_unlock(&table_lock);
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VG_BO_ALLOC(bo);
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return bo;
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}
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drm_public struct fd_bo *
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fd_bo_new(struct fd_device *dev, uint32_t size, uint32_t flags)
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{
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struct fd_bo *bo = bo_new(dev, size, flags, &dev->bo_cache);
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if (bo)
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bo->bo_reuse = BO_CACHE;
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return bo;
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}
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/* internal function to allocate bo's that use the ringbuffer cache
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* instead of the normal bo_cache. The purpose is, because cmdstream
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* bo's get vmap'd on the kernel side, and that is expensive, we want
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* to re-use cmdstream bo's for cmdstream and not unrelated purposes.
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*/
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drm_private struct fd_bo *
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fd_bo_new_ring(struct fd_device *dev, uint32_t size, uint32_t flags)
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{
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struct fd_bo *bo = bo_new(dev, size, flags, &dev->ring_cache);
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if (bo)
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bo->bo_reuse = RING_CACHE;
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return bo;
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}
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drm_public struct fd_bo *
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fd_bo_from_handle(struct fd_device *dev, uint32_t handle, uint32_t size)
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{
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struct fd_bo *bo = NULL;
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pthread_mutex_lock(&table_lock);
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bo = lookup_bo(dev->handle_table, handle);
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if (bo)
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goto out_unlock;
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bo = bo_from_handle(dev, size, handle);
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VG_BO_ALLOC(bo);
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out_unlock:
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pthread_mutex_unlock(&table_lock);
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return bo;
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}
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drm_public struct fd_bo *
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fd_bo_from_dmabuf(struct fd_device *dev, int fd)
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{
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int ret, size;
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uint32_t handle;
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struct fd_bo *bo;
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pthread_mutex_lock(&table_lock);
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ret = drmPrimeFDToHandle(dev->fd, fd, &handle);
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if (ret) {
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pthread_mutex_unlock(&table_lock);
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return NULL;
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}
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bo = lookup_bo(dev->handle_table, handle);
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if (bo)
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goto out_unlock;
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/* lseek() to get bo size */
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size = lseek(fd, 0, SEEK_END);
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lseek(fd, 0, SEEK_CUR);
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bo = bo_from_handle(dev, size, handle);
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VG_BO_ALLOC(bo);
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out_unlock:
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pthread_mutex_unlock(&table_lock);
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return bo;
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}
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drm_public struct fd_bo * fd_bo_from_name(struct fd_device *dev, uint32_t name)
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{
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struct drm_gem_open req = {
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.name = name,
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};
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struct fd_bo *bo;
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pthread_mutex_lock(&table_lock);
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/* check name table first, to see if bo is already open: */
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bo = lookup_bo(dev->name_table, name);
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if (bo)
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goto out_unlock;
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if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) {
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ERROR_MSG("gem-open failed: %s", strerror(errno));
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goto out_unlock;
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}
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bo = lookup_bo(dev->handle_table, req.handle);
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if (bo)
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goto out_unlock;
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bo = bo_from_handle(dev, req.size, req.handle);
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if (bo) {
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set_name(bo, name);
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VG_BO_ALLOC(bo);
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}
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out_unlock:
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pthread_mutex_unlock(&table_lock);
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return bo;
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}
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drm_public uint64_t fd_bo_get_iova(struct fd_bo *bo)
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{
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return bo->funcs->iova(bo);
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}
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drm_public void fd_bo_put_iova(struct fd_bo *bo)
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{
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/* currently a no-op */
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}
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drm_public struct fd_bo * fd_bo_ref(struct fd_bo *bo)
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{
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atomic_inc(&bo->refcnt);
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return bo;
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}
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drm_public void fd_bo_del(struct fd_bo *bo)
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{
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struct fd_device *dev = bo->dev;
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if (!atomic_dec_and_test(&bo->refcnt))
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return;
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pthread_mutex_lock(&table_lock);
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if ((bo->bo_reuse == BO_CACHE) && (fd_bo_cache_free(&dev->bo_cache, bo) == 0))
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goto out;
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if ((bo->bo_reuse == RING_CACHE) && (fd_bo_cache_free(&dev->ring_cache, bo) == 0))
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goto out;
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bo_del(bo);
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fd_device_del_locked(dev);
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out:
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pthread_mutex_unlock(&table_lock);
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}
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/* Called under table_lock */
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drm_private void bo_del(struct fd_bo *bo)
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{
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VG_BO_FREE(bo);
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if (bo->map)
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drm_munmap(bo->map, bo->size);
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/* TODO probably bo's in bucket list get removed from
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* handle table??
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*/
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if (bo->handle) {
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struct drm_gem_close req = {
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.handle = bo->handle,
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};
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drmHashDelete(bo->dev->handle_table, bo->handle);
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if (bo->name)
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drmHashDelete(bo->dev->name_table, bo->name);
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drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
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}
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bo->funcs->destroy(bo);
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}
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drm_public int fd_bo_get_name(struct fd_bo *bo, uint32_t *name)
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{
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if (!bo->name) {
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struct drm_gem_flink req = {
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.handle = bo->handle,
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};
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int ret;
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ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req);
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if (ret) {
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return ret;
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}
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pthread_mutex_lock(&table_lock);
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set_name(bo, req.name);
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pthread_mutex_unlock(&table_lock);
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bo->bo_reuse = NO_CACHE;
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}
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*name = bo->name;
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return 0;
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}
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drm_public uint32_t fd_bo_handle(struct fd_bo *bo)
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{
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return bo->handle;
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}
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drm_public int fd_bo_dmabuf(struct fd_bo *bo)
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{
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int ret, prime_fd;
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ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
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&prime_fd);
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if (ret) {
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ERROR_MSG("failed to get dmabuf fd: %d", ret);
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return ret;
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}
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bo->bo_reuse = NO_CACHE;
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return prime_fd;
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}
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drm_public uint32_t fd_bo_size(struct fd_bo *bo)
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{
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return bo->size;
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}
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drm_public void * fd_bo_map(struct fd_bo *bo)
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{
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if (!bo->map) {
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uint64_t offset;
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int ret;
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ret = bo->funcs->offset(bo, &offset);
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if (ret) {
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return NULL;
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}
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bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
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bo->dev->fd, offset);
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if (bo->map == MAP_FAILED) {
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ERROR_MSG("mmap failed: %s", strerror(errno));
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bo->map = NULL;
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}
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}
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return bo->map;
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}
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/* a bit odd to take the pipe as an arg, but it's a, umm, quirk of kgsl.. */
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drm_public int fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
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{
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return bo->funcs->cpu_prep(bo, pipe, op);
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}
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drm_public void fd_bo_cpu_fini(struct fd_bo *bo)
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{
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bo->funcs->cpu_fini(bo);
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}
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#if !HAVE_FREEDRENO_KGSL
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drm_public struct fd_bo * fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
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{
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return NULL;
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}
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#endif
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