video: tegra: host: dla: add submit IOCTL

- 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

2 files changed, 97 insertions, 2 deletions

diff --git a/drivers/video/tegra/host/nvdla/nvdla_ioctl.c b/drivers/video/tegra/host/nvdla/nvdla_ioctl.c
index 64f0377d2..fcf35b1a0 100644
--- a/drivers/video/tegra/host/nvdla/nvdla_ioctl.c
+++ b/drivers/video/tegra/host/nvdla/nvdla_ioctl.c
@@ -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;
diff --git a/include/linux/nvhost_nvdla_ioctl.h b/include/linux/nvhost_nvdla_ioctl.h
index b5b6c676b..06f4f1011 100644
--- a/include/linux/nvhost_nvdla_ioctl.h
+++ b/include/linux/nvhost_nvdla_ioctl.h
@@ -39,6 +39,63 @@ struct nvdla_ctrl_pin_unpin_args {
         __u32 reserved;
 };
 
+struct nvdla_ctrl_submit_args {
+        __u64 tasks;
+        __u16 num_tasks;
+#define MAX_TASKS_PER_SUBMIT    32
+#define NVDLA_SUBMIT_FLAGS_ATOMIC       (1 << 0)
+        __u16 flags;
+        __u32 version;
+};
+
+struct nvdla_ctrl_ioctl_submit_task {
+        __u8 num_prefences;
+        __u8 num_postfences;
+        __u8 num_input_task_status;
+        __u8 num_output_task_status;
+        __u16 flags;
+        __u16 reserved;
+
+        __u64 prefences;
+        __u64 postfences;
+
+        __u64 input_task_status;
+        __u64 output_task_status;
+
+        __u32 num_operations;
+        __u32 num_addresses;
+        __u64 operation_desc;
+
+        __u64 surface_desc;
+        __u64 address_list;
+};
+
+struct nvdla_fence {
+        __u32 type;
+#define NVDLA_FENCE_TYPE_SYNCPT         0
+#define NVDLA_FENCE_TYPE_SYNC_FD        1
+        __u32 syncpoint_index;
+        __u32 syncpoint_value;
+        __u32 sync_fd;
+};
+
+struct nvdla_task_surface {
+        __u64 format;
+        __u32 handle;
+        __u32 offset;
+};
+
+struct nvdla_task_roi {
+        __u32 handle;
+        __u32 offset;
+};
+
+struct nvdla_task_status_handle {
+        __u32 handle;
+        __u32 reserved;
+        __u64 offset;
+};
+
 #define NVHOST_NVDLA_IOCTL_MAGIC 'D'
 
 #define NVDLA_IOCTL_CTRL_PING           \
@@ -47,9 +104,10 @@ struct nvdla_ctrl_pin_unpin_args {
         _IOW(NVHOST_NVDLA_IOCTL_MAGIC, 2, struct nvdla_ctrl_pin_unpin_args)
 #define NVDLA_IOCTL_CTRL_UNPIN \
         _IOW(NVHOST_NVDLA_IOCTL_MAGIC, 3, struct nvdla_ctrl_pin_unpin_args)
-
+#define NVDLA_IOCTL_CTRL_SUBMIT \
+        _IOW(NVHOST_NVDLA_IOCTL_MAGIC, 4, struct nvdla_ctrl_submit_args)
 #define NVDLA_IOCTL_CTRL_LAST           \
-                _IOC_NR(NVDLA_IOCTL_CTRL_UNPIN)
+                _IOC_NR(NVDLA_IOCTL_CTRL_SUBMIT)
 
 #define NVDLA_IOCTL_CTRL_MAX_ARG_SIZE  \
                 sizeof(struct nvdla_ctrl_pin_unpin_args)