static int nvhost_channelopen(struct inode *inode, struct file *filp)
{
struct nvhost_channel_userctx *priv;
struct nvhost_channel *ch;
ch = container_of(inode->i_cdev, struct nvhost_channel, cdev);
ch = nvhost_getchannel(ch);
if (!ch)
return -ENOMEM;
trace_nvhost_channel_open(ch->dev->name);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
nvhost_putchannel(ch, NULL);
return -ENOMEM;
}
filp->private_data = priv;
mutex_init(&priv->mutex);
mutex_lock(&priv->mutex);
priv->ch = ch;
if(nvhost_module_add_client(ch->dev, priv))
goto fail;
if (ch->ctxhandler && ch->ctxhandler->alloc) {
priv->hwctx = ch->ctxhandler->alloc(ch->ctxhandler, ch);
if (!priv->hwctx)
goto fail;
}
priv->priority = NVHOST_PRIORITY_MEDIUM;
priv->clientid = atomic_add_return(1,
&nvhost_get_host(ch->dev)->clientid);
priv->timeout = CONFIG_TEGRA_GRHOST_DEFAULT_TIMEOUT;
mutex_unlock(&priv->mutex);
return 0;
fail:
nvhost_channelrelease(inode, filp);
mutex_unlock(&priv->mutex);
return -ENOMEM;
}
static int nvhost_channelopen(struct inode *inode, struct file *filp)
{
struct nvhost_channel_userctx *priv;
struct nvhost_channel *ch;
ch = container_of(inode->i_cdev, struct nvhost_channel, cdev);
ch = nvhost_getchannel(ch);
if (!ch)
return -ENOMEM;
trace_nvhost_channel_open(ch->desc->name);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
nvhost_putchannel(ch, NULL);
return -ENOMEM;
}
filp->private_data = priv;
priv->ch = ch;
nvhost_module_add_client(ch->dev, &ch->mod, priv);
priv->gather_mem = nvmap_alloc(ch->dev->nvmap,
sizeof(u32) * 2 * NVHOST_MAX_GATHERS, 32,
NVMAP_HANDLE_CACHEABLE);
if (IS_ERR(priv->gather_mem))
goto fail;
if (ch->ctxhandler.alloc) {
priv->hwctx = ch->ctxhandler.alloc(ch);
if (!priv->hwctx)
goto fail;
priv->hwctx->timeout = &priv->timeout;
}
priv->gathers = nvmap_mmap(priv->gather_mem);
return 0;
fail:
nvhost_channelrelease(inode, filp);
return -ENOMEM;
}
static int nvhost_channelopen(struct inode *inode, struct file *filp)
{
struct nvhost_channel_userctx *priv;
struct nvhost_channel *ch;
ch = container_of(inode->i_cdev, struct nvhost_channel, cdev);
ch = nvhost_getchannel(ch);
if (!ch)
return -ENOMEM;
trace_nvhost_channel_open(ch->dev->name);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
nvhost_putchannel(ch, NULL);
return -ENOMEM;
}
filp->private_data = priv;
priv->ch = ch;
nvhost_module_add_client(ch->dev, priv);
if (ch->ctxhandler && ch->ctxhandler->alloc) {
priv->hwctx = ch->ctxhandler->alloc(ch->ctxhandler, ch);
if (!priv->hwctx)
goto fail;
}
priv->priority = NVHOST_PRIORITY_MEDIUM;
priv->clientid = atomic_add_return(1,
&nvhost_get_host(ch->dev)->clientid);
priv->job = nvhost_job_alloc(ch, priv->hwctx, &priv->hdr,
NULL, priv->priority, priv->clientid);
if (!priv->job)
goto fail;
return 0;
fail:
nvhost_channelrelease(inode, filp);
return -ENOMEM;
}
