drivers: pva: add fence update method

Fence update method is defined as increment or set.
when method ios set, the fence value is set to the value
requested.

This applies only to semaphores.

Bug

Change-Id: I1c744826868dde7950c9482ae9a0c601e63a63a1
Signed-off-by: omar <onemri@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3231374
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Ashwin Rao <ashwinr@nvidia.com>
Tested-by: Ashwin Rao <ashwinr@nvidia.com>
Reviewed-by: Sreehari Mohan <sreeharim@nvidia.com>
Tested-by: Sreehari Mohan <sreeharim@nvidia.com>

drivers/video/tegra/host/pva/pva_ioctl.c

@@ -319,7 +319,8 @@ out:
  * @return	0 on Success or negative error code
  *
  */
-static int pva_submit(struct pva_private *priv, void *arg)
+
+static int pva_submit(struct pva_private *priv, void *arg, bool is_ex)
 {
 	struct nvpva_ioctl_submit_in_arg *ioctl_tasks_header =
 		(struct nvpva_ioctl_submit_in_arg *)arg;
@@ -419,6 +420,10 @@ static int pva_submit(struct pva_private *priv, void *arg)
 		task->pva = priv->pva;
 		task->queue = priv->queue;
 		task->client = priv->client;
+		if (is_ex)
+			task->default_sem_update_method = false;
+		else
+			task->default_sem_update_method = true;
 
 		/* setup ownership */
 		err = nvhost_module_busy(task->pva->pdev);
@@ -953,7 +958,10 @@ static long pva_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		err = pva_unpin(priv, buf);
 		break;
 	case NVPVA_IOCTL_SUBMIT:
-		err = pva_submit(priv, buf);
+		err = pva_submit(priv, buf, false);
+		break;
+	case NVPVA_IOCTL_SUBMIT_EX:
+		err = pva_submit(priv, buf, true);
 		break;
 	case NVPVA_IOCTL_SET_VPU_PRINT_BUFFER_SIZE:
 		err = pva_set_vpu_print_buffer_size(priv, buf);

drivers/video/tegra/host/pva/pva_queue.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2020-2023, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2020-2024, NVIDIA CORPORATION. All rights reserved.
  */
 
 #include <nvidia/conftest.h>
@@ -376,6 +376,7 @@ pva_task_process_fence_actions(struct pva_submit_task *task,
 			}
 			case NVPVA_FENCE_OBJ_SEM:
 			{
+				u32 update_method;
 				err = pva_task_pin_fence(task,
 							 &fence_action->fence,
 							 &fence_addr,
@@ -383,10 +384,17 @@ pva_task_process_fence_actions(struct pva_submit_task *task,
 				if (err)
 					goto out;
 
+				update_method = fence_action->fence.update_method;
+				if ((task->default_sem_update_method)
+				 || (update_method == NVPVA_FENCE_OBJ_UPDATE_INC)) {
 					task->sem_num += 1;
 					task->sem_thresh += 1;
 					fence_value = task->sem_thresh;
 					fence_action->fence.obj.sem.value = fence_value;
+				} else {
+					fence_value = fence_action->fence.obj.sem.value;
+				}
+
 				task->fence_act_serial_ids[fence_type][i] = serial_id;
 				break;
 			}

drivers/video/tegra/host/pva/pva_queue.h

@@ -194,6 +194,7 @@ struct pva_submit_task {
 	u64 src_surf_base_addr;
 	u64 dst_surf_base_addr;
 	bool is_system_app;
+	bool default_sem_update_method;
 };
 
 struct pva_submit_tasks {

include/uapi/linux/nvpva_ioctl.h

@@ -234,6 +234,12 @@ enum nvpva_fence_obj_type {
 	NVPVA_FENCE_OBJ_SYNC_FD = 3U,
 };
 
+enum nvpva_fence_obj_update_method {
+	NVPVA_FENCE_OBJ_UPDATE_INC	= 0U,
+	NVPVA_FENCE_OBJ_UPDATE_SET	= 1U,
+	NVPVA_FENCE_OBJ_UPDATE_INVALID	= 2U,
+};
+
 enum nvpva_symbol_config {
 	NVPVA_SYMBOL_PARAM = 0U,
 	NVPVA_SYMBOL_POINTER = 1U,
@@ -284,7 +290,7 @@ union nvpva_fence_obj {
 
 struct nvpva_submit_fence {
 	uint32_t type;
-	uint32_t reserved;
+	uint32_t update_method;
 	union nvpva_fence_obj obj;
 };
 
@@ -596,7 +602,10 @@ union nvpva_set_vpu_print_buffer_size_args {
 #define NVPVA_IOCTL_PIN_EX \
 	_IOWR(NVPVA_IOCTL_MAGIC, 12, union nvpva_pin_args_ex)
 
-#define NVPVA_IOCTL_NUMBER_MAX 12
+#define NVPVA_IOCTL_SUBMIT_EX \
+	_IOW(NVPVA_IOCTL_MAGIC, 13, union nvpva_ioctl_submit_args)
+
+#define NVPVA_IOCTL_NUMBER_MAX 13
 
 #ifndef MAX
 #define MAX(a, b) ((a) > (b) ? (a) : (b))