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video: tegra: host: dla: add submit IOCTL

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- add initial task submit stub

Jira DLA-19

Change-Id: Iea249cfd14cf186b984d1f296373740f80429c3d
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-on: http://git-master/r/1191493
This commit is contained in:
Shridhar Rasal
2016-07-25 14:58:10 +05:30
committed by Laxman Dewangan
parent 817230d68c
commit 76148fdb14
1 changed files with 37 additions and 0 deletions
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37
drivers/video/tegra/host/nvdla/nvdla_ioctl.c
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@@ -152,6 +152,40 @@ fail_to_alloc:
return err;
}
static int nvdla_ctrl_submit(struct nvdla_private *priv, void *arg)
{
struct nvdla_ctrl_submit_args *args =
(struct nvdla_ctrl_submit_args *)arg;
struct nvdla_ctrl_ioctl_submit_task __user *user_tasks =
(struct nvdla_ctrl_ioctl_submit_task __user *)
(uintptr_t)args->tasks;
struct nvdla_ctrl_ioctl_submit_task *local_tasks;
struct nvhost_queue *queue = priv->queue;
u32 num_tasks = args->num_tasks;
int err = 0, i = 0;
if (num_tasks > MAX_TASKS_PER_SUBMIT)
return -EINVAL;
local_tasks = kcalloc(num_tasks, sizeof(*local_tasks),
GFP_KERNEL);
if (!local_tasks)
return -ENOMEM;
if (copy_from_user(local_tasks, user_tasks,
(num_tasks * sizeof(*user_tasks)))) {
err = -EFAULT;
goto fail_to_copy_task;
}
for (i = 0; i < num_tasks; i++)
nvhost_queue_submit(queue, &local_tasks[i]);
fail_to_copy_task:
return err;
}
static long nvdla_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
@@ -186,6 +220,9 @@ static long nvdla_ioctl(struct file *file, unsigned int cmd,
case NVDLA_IOCTL_CTRL_UNPIN:
err = nvdla_ctrl_unpin(priv, (void *)buf);
break;
case NVDLA_IOCTL_CTRL_SUBMIT:
err = nvdla_ctrl_submit(priv, (void *)buf);
break;
default:
err = -ENOIOCTLCMD;
break;