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video: tegra: host: nvdla: Add support for internal buffers

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- Add buffer type field to nvdla_mem_handle
- For internal buffers, skip pin and unpin operations and pass the
offset as final adress
- Also update error handling in nvdla_map_task_memory to match with
  convention

Jira DLA-4376

Change-Id: I662da30cb9c606d2f67b792f09e026af391c89d1
Signed-off-by: Anup Mahindre <amahindre@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2503708
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Praveen K <kpraveen@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Anup Mahindre
2021-03-23 12:37:06 +05:30
committed by Laxman Dewangan
parent 65f1839c50
commit 6242fdd281
2 changed files with 25 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/video/tegra/host/nvdla/nvdla_queue.c
View File

@@ -1,7 +1,7 @@
/*
* NVDLA queue and task management for T194
*
* Copyright (c) 2016-2020, NVIDIA Corporation. All rights reserved.
* Copyright (c) 2016-2021, NVIDIA Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -174,6 +174,11 @@ static int nvdla_unmap_task_memory(struct nvdla_task *task)
/* unpin address list */
for (ii = 0; ii < task->num_addresses; ii++) {
if (task->memory_handles[ii].type ==
NVDLA_BUFFER_TYPE_INTERNAL) {
/* No unpinning required for internal buffers */
continue;
}
if (task->memory_handles[ii].handle) {
nvdla_buffer_submit_unpin(task->buffers,
&task->memory_dmabuf[ii], 1);
@@ -590,15 +595,24 @@ static int nvdla_map_task_memory(struct nvdla_task *task)
for (jj = 0; jj < task->num_addresses; jj++) {
dma_addr_t dma_addr;
size_t dma_size;
err = -EFAULT;
nvdla_dbg_info(pdev, "count[%d] handle[%u] offset[%u]",
jj,
task->memory_handles[jj].handle,
task->memory_handles[jj].offset);
if (!task->memory_handles[jj].handle)
if (task->memory_handles[jj].type ==
NVDLA_BUFFER_TYPE_INTERNAL) {
/* For internal buffers, offset is the final address */
next = add_address(next,
task->memory_handles[jj].offset);
continue;
}
if (!task->memory_handles[jj].handle) {
err = -EFAULT;
goto fail_to_pin_mem;
}
task->memory_dmabuf[jj] =
dma_buf_get(task->memory_handles[jj].handle);

9
include/uapi/linux/nvhost_nvdla_ioctl.h
View File

@@ -3,7 +3,7 @@
*
* Tegra NvDLA Driver
*
* Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2016-2021, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -127,11 +127,18 @@ struct nvdla_get_q_status_args {
*
* @handle handle to buffer allocated in userspace
* @offset offset in buffer
* @type buffer heap type
* @reserved reserved for future use
*
*/
struct nvdla_mem_handle {
__u32 handle;
__u32 offset;
#define NVDLA_BUFFER_TYPE_MC 0U
#define NVDLA_BUFFER_TYPE_CV 1U
#define NVDLA_BUFFER_TYPE_INTERNAL 2U
__u8 type;
__u8 reserved[3];
};
/**