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msm: camera: uapi: Add support for using dma fences

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The change adds infrastructure to perform different operations
such as create/import/release etc. on different types of
fences [sync/dma/synx]. The change also adds provision to
process fences in a batch.

CRs-Fixed: 3179072
Change-Id: Icbddb0ac8cd879f81ff58accdae6d51c35a316b7
Signed-off-by: Karthik Anantha Ram <quic_kartanan@quicinc.com>
This commit is contained in:
Karthik Anantha Ram
2022-02-10 16:41:41 -08:00
committed by Camera Software Integration
parent d0c4727052
commit 6f3469956d
1 changed files with 118 additions and 1 deletions
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119
include/uapi/camera/media/cam_sync.h
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@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
/*
* Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
*/
@@ -150,6 +150,10 @@
#define CAM_SYNC_EVENT_MAX 8
#define CAM_SYNC_EVENT_REASON_CODE_INDEX 0
/* Fence types supported by the driver */
#define CAM_GENERIC_FENCE_TYPE_SYNC_OBJ 0x1
#define CAM_GENERIC_FENCE_TYPE_DMA_FENCE 0x2
/**
* struct cam_sync_ev_header - Event header for sync event notification
*
@@ -237,6 +241,112 @@ struct cam_sync_wait {
uint64_t timeout_ms;
};
/**
* struct cam_generic_fence_config - Fence config
* Based on the operation, fields could be
* input/output
*
* @version: Struct version
* @name: Optional string representation [used for create/import]
* @fence_sel_mask: Fence select mask, if set for fence types other than the type
* this input is processed for, the corresponding types would be
* processed as well. For example if one wants to import a sync
* object for an existing dma fence, set mask |= CAM_GENERIC_FENCE_TYPE_SYNC_OBJ,
* a new sync object would be returned in sync_obj linked to an
* existing dma_fence_fd.
* @sync_obj: Sync object
* @dma_fence_fd: DMA fence fd
* @synx_obj: Synx object
* @reason_code: Indicates if the operation was successful or not
* for this set of fences. It is the responsibility of
* the caller to clean up any partially processed batched
* fences
* @num_valid_params: Valid number of params being used
* @valid_param_mask: Mask to indicate the field types in params
* @params: Additional params
*/
struct cam_generic_fence_config {
__u32 version;
char name[64];
__u32 fence_sel_mask;
__s32 sync_obj;
__s32 dma_fence_fd;
__s32 synx_obj;
__s32 reason_code;
__u32 num_valid_params;
__u32 valid_param_mask;
__u32 params[4];
};
/**
* struct cam_dma_fence_signal - DMA fence signaling info
*
* @version: Struct version
* @dma_fence_fd: DMA fence to be signaled
* @status: Any status if applicable, 0 for success
* @num_valid_params: Valid number of params being used
* @valid_param_mask: Mask to indicate the field types in params
* @params: Additional params
*/
struct cam_dma_fence_signal {
__u32 version;
__s32 dma_fence_fd;
__s32 status;
__u32 num_valid_params;
__u32 valid_param_mask;
__s32 params[3];
};
/**
* struct cam_generic_fence_input_info - Parent structure that
* provides info on fence batching
*
* @version: Struct version
* @num_fences_requested: Number of fences to process
* @num_fences_processed: Number of fences processed
* If userland requests 5 fences to be created
* and it fails on the 3rd, num processed will be
* 3. This can be used by userspace to clean
* partially batched fences
* @num_valid_params: Valid number of params being used
* @valid_param_mask: Mask to indicate the field types in params
* @params: Additional params
* @fence_info: Variable length fence info input based on num_fences
*/
struct cam_generic_fence_input_info {
__u32 version;
__u32 num_fences_requested;
__u32 num_fences_processed;
__u32 num_valid_params;
__u32 valid_param_mask;
__s32 params[3];
struct cam_generic_fence_config fence_cfg[1];
};
/**
* struct cam_generic_fence_cmd_args - Generic fence cmd args
*
* @version: Struct version
* @fence_type: Type of fence the ioctl cmd is for [dma/sync/synx]
* @input_handle_type: Type of the fence input handle [user handle is expected]
* @input_data_size: Size of the data pointed to by input_handle
* @input_handle: Handle to the fence input data [create/signal/import...]
* corresponding to the fence_type
* @num_valid_params: Valid number of reserved params being used
* @valid_param_mask: Mask to indicate the field types in params
* @params: Additional params
*/
struct cam_generic_fence_cmd_args {
__u32 version;
__u32 fence_type;
__u32 input_handle_type;
__u32 input_data_size;
__u64 input_handle;
__u32 num_valid_params;
__u32 valid_param_mask;
__u32 params[6];
};
/**
* struct cam_private_ioctl_arg - Sync driver ioctl argument
*
@@ -257,6 +367,7 @@ struct cam_private_ioctl_arg {
#define CAM_PRIVATE_IOCTL_CMD \
_IOWR('V', BASE_VIDIOC_PRIVATE, struct cam_private_ioctl_arg)
/* Exclusive sync object IOCTL cmds */
#define CAM_SYNC_CREATE 0
#define CAM_SYNC_DESTROY 1
#define CAM_SYNC_SIGNAL 2
@@ -265,4 +376,10 @@ struct cam_private_ioctl_arg {
#define CAM_SYNC_DEREGISTER_PAYLOAD 5
#define CAM_SYNC_WAIT 6
/* Generic fence [sync/dma/synx] IOCTL cmds */
#define CAM_GENERIC_FENCE_CREATE 11
#define CAM_GENERIC_FENCE_RELEASE 12
#define CAM_GENERIC_FENCE_IMPORT 13
#define CAM_GENERIC_FENCE_SIGNAL 14
#endif /* __UAPI_CAM_SYNC_H__ */