51ff30338b
git-subtree-dir: qcom/opensource/synx-kernel git-subtree-mainline:fe7b3b613fgit-subtree-split:2657c18a78Change-Id: repo: https://git.codelinaro.org/clo/la/platform/vendor/opensource/synx-kernel tag: LA.VENDOR.14.3.0.r1-17300-lanai.QSSI15.0
591 строка
20 KiB
C
591 строка
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2019, 2021, The Linux Foundation. All rights reserved.
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* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __SYNX_API_H__
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#define __SYNX_API_H__
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#include <linux/list.h>
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#include <synx_header.h>
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#include "synx_err.h"
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#define SYNX_NO_TIMEOUT ((u64)-1)
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/**
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* SYNX_INVALID_HANDLE : client can assign the synx handle variable with this value
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* when it doesn't hold a valid synx handle
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*/
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#define SYNX_INVALID_HANDLE 0
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/* synx object states */
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#define SYNX_STATE_INVALID 0 // Invalid synx object
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#define SYNX_STATE_ACTIVE 1 // Synx object has not been signaled
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#define SYNX_STATE_SIGNALED_ERROR 3 // Synx object signaled with error
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#define SYNX_STATE_SIGNALED_EXTERNAL 5 // Synx object was signaled by external dma client.
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#define SYNX_STATE_SIGNALED_SSR 6 // Synx object signaled with SSR
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#define SYNX_STATE_TIMEOUT 7 // Callback status for synx object in case of timeout
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/**
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* enum synx_create_flags - Flags passed during synx_create call.
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*
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* SYNX_CREATE_LOCAL_FENCE : Instructs the framework to create local synx object,
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* for local synchronization i.e. within same core.
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* SYNX_CREATE_GLOBAL_FENCE : Instructs the framework to create global synx object
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* for global synchronization i.e. across supported core.
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* SYNX_CREATE_DMA_FENCE : Create a synx object by wrapping the provided dma fence.
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* Need to pass the dma_fence ptr through fence variable
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* if this flag is set. (NOT SUPPORTED)
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* SYNX_CREATE_CSL_FENCE : Create a synx object with provided csl fence.
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* Establishes interop with the csl fence through
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* bind operations. (NOT SUPPORTED)
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*/
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enum synx_create_flags {
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SYNX_CREATE_LOCAL_FENCE = 0x01,
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SYNX_CREATE_GLOBAL_FENCE = 0x02,
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SYNX_CREATE_DMA_FENCE = 0x04,
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SYNX_CREATE_CSL_FENCE = 0x08,
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SYNX_CREATE_MAX_FLAGS = 0x10,
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};
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/**
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* enum synx_init_flags - Session initialization flag
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* SYNX_INIT_DEFAULT : Initialization flag to be passed
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* when initializing session
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* SYNX_INIT_MAX : Used for internal checks
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*/
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enum synx_init_flags {
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SYNX_INIT_DEFAULT = 0x00,
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SYNX_INIT_MAX = 0x01,
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};
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/**
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* enum synx_import_flags - Import flags
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*
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* SYNX_IMPORT_LOCAL_FENCE : Instructs the framework to create local synx object,
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* for local synchronization i.e. within same core.
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* SYNX_IMPORT_GLOBAL_FENCE : Instructs the framework to create global synx object,
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* for global synchronization i.e. across supported core.
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* SYNX_IMPORT_SYNX_FENCE : Import native Synx handle for synchronization.
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* Need to pass the Synx handle ptr through fence variable
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* if this flag is set. Client must pass:
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* a. SYNX_IMPORT_SYNX_FENCE|SYNX_IMPORT_LOCAL_FENCE
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* to import a synx handle as local synx handle.
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* b. SYNX_IMPORT_SYNX_FENCE|SYNX_IMPORT_GLOBAL_FENCE
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* to import a synx handle as global synx handle.
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* SYNX_IMPORT_DMA_FENCE : Import dma fence and create Synx handle for interop.
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* Need to pass the dma_fence ptr through fence variable
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* if this flag is set. Client must pass:
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* a. SYNX_IMPORT_DMA_FENCE|SYNX_IMPORT_LOCAL_FENCE
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* to import a dma fence and create local synx handle
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* for interop.
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* b. SYNX_IMPORT_DMA_FENCE|SYNX_IMPORT_GLOBAL_FENCE
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* to import a dma fence and create global synx handle
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* for interop.
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* SYNX_IMPORT_EX_RELEASE : Flag to inform relaxed invocation where release call
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* need not be called by client on this handle after import.
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* (NOT SUPPORTED)
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*/
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enum synx_import_flags {
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SYNX_IMPORT_LOCAL_FENCE = 0x01,
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SYNX_IMPORT_GLOBAL_FENCE = 0x02,
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SYNX_IMPORT_SYNX_FENCE = 0x04,
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SYNX_IMPORT_DMA_FENCE = 0x08,
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SYNX_IMPORT_EX_RELEASE = 0x10,
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};
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/**
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* enum synx_signal_status - Signal status
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*
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* SYNX_STATE_SIGNALED_SUCCESS : Signal success
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* SYNX_STATE_SIGNALED_CANCEL : Signal cancellation
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* SYNX_STATE_SIGNALED_MAX : Clients can send custom notification
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* beyond the max value (only positive)
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*/
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enum synx_signal_status {
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SYNX_STATE_SIGNALED_SUCCESS = 2,
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SYNX_STATE_SIGNALED_CANCEL = 4,
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SYNX_STATE_SIGNALED_MAX = 64,
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};
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/**
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* synx_callback - Callback invoked by external fence
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*
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* External fence dispatch the registered callback to notify
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* signal to synx framework.
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*/
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typedef void (*synx_callback)(s32 sync_obj, int status, void *data);
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/**
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* synx_user_callback - Callback function registered by clients
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*
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* User callback registered for non-blocking wait. Dispatched when
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* synx object is signaled or timed-out with status of synx object.
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*/
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typedef void (*synx_user_callback_t)(u32 h_synx, int status, void *data);
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/**
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* struct bind_operations - Function pointers that need to be defined
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* to achieve bind functionality for external fence with synx obj
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*
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* @register_callback : Function to register with external sync object
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* @deregister_callback : Function to deregister with external sync object
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* @enable_signaling : Function to enable the signaling on the external
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* sync object (optional)
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* @signal : Function to signal the external sync object
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*/
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struct bind_operations {
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int (*register_callback)(synx_callback cb_func,
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void *userdata, s32 sync_obj);
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int (*deregister_callback)(synx_callback cb_func,
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void *userdata, s32 sync_obj);
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int (*enable_signaling)(s32 sync_obj);
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int (*signal)(s32 sync_obj, u32 status);
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};
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/**
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* synx_bind_client_type : External fence supported for bind (NOT SUPPORTED)
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*
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* SYNX_TYPE_CSL : Camera CSL fence
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* SYNX_MAX_BIND_TYPES : Used for internal checks
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*/
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enum synx_bind_client_type {
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SYNX_TYPE_CSL = 0,
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SYNX_MAX_BIND_TYPES,
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};
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/**
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* struct synx_register_params - External registration parameters (NOT SUPPORTED)
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*
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* @ops : Bind operations struct
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* @name : External client name
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* Only first 64 bytes are accepted, rest will be ignored
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* @type : Synx bind client type
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*/
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struct synx_register_params {
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struct bind_operations ops;
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char *name;
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enum synx_bind_client_type type;
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};
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/**
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* struct synx_queue_desc - Memory descriptor of the queue allocated by
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* the fence driver for each client during
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* register. (Clients need not pass any pointer
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* in synx_initialize_params. It is for future
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* use).
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*
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* @vaddr : CPU virtual address of the queue.
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* @dev_addr : Physical address of the memory object.
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* @size : Size of the memory.
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* @mem_data : Internal pointer with the attributes of the allocation.
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*/
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struct synx_queue_desc {
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void *vaddr;
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u64 dev_addr;
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u64 size;
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void *mem_data;
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};
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/**
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* enum synx_client_id : Unique identifier of the supported clients
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*
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* @SYNX_CLIENT_NATIVE : Native Client
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* @SYNX_CLIENT_GFX_CTX0 : GFX Client 0
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* @SYNX_CLIENT_DPU_CTL0 : DPU Client 0
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* @SYNX_CLIENT_DPU_CTL1 : DPU Client 1
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* @SYNX_CLIENT_DPU_CTL2 : DPU Client 2
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* @SYNX_CLIENT_DPU_CTL3 : DPU Client 3
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* @SYNX_CLIENT_DPU_CTL4 : DPU Client 4
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* @SYNX_CLIENT_DPU_CTL5 : DPU Client 5
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* @SYNX_CLIENT_EVA_CTX0 : EVA Client 0
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* @SYNX_CLIENT_VID_CTX0 : Video Client 0
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* @SYNX_CLIENT_NSP_CTX0 : NSP Client 0
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* @SYNX_CLIENT_IFE_CTX0 : IFE Client 0
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* @SYNX_CLIENT_ICP_CTX0 : ICP Client 0
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*/
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enum synx_client_id {
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SYNX_CLIENT_NATIVE = 0,
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SYNX_CLIENT_GFX_CTX0,
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SYNX_CLIENT_DPU_CTL0,
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SYNX_CLIENT_DPU_CTL1,
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SYNX_CLIENT_DPU_CTL2,
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SYNX_CLIENT_DPU_CTL3,
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SYNX_CLIENT_DPU_CTL4,
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SYNX_CLIENT_DPU_CTL5,
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SYNX_CLIENT_EVA_CTX0,
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SYNX_CLIENT_VID_CTX0,
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SYNX_CLIENT_NSP_CTX0,
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SYNX_CLIENT_IFE_CTX0,
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SYNX_CLIENT_ICP_CTX0,
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SYNX_CLIENT_MAX,
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};
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/**
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* struct synx_session - Client session identifier
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*
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* @type : Session type.
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* Internal Member. (Do not access/modify)
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* @client : Pointer to client session
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* Internal Member. (Do not access/modify)
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*/
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struct synx_session {
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u32 type;
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void *client;
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};
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/**
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* struct synx_initialization_params - Session params
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*
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* @name : Client session name
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* Only first 64 bytes are accepted, rest will be ignored
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* @ptr : Memory descriptor of queue allocated by fence during
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* device register. (filled by function)
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* @id : Client identifier
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* @flags : Synx initialization flags
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*/
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struct synx_initialization_params {
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const char *name;
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struct synx_queue_desc *ptr;
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enum synx_client_id id;
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enum synx_init_flags flags;
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};
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/**
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* struct synx_create_params - Synx creation parameters
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*
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* @name : Optional parameter associating a name with the synx
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* object for debug purposes
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* Only first 64 bytes are accepted,
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* rest will be ignored
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* @h_synx : Pointer to synx object handle (filled by function)
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* @fence : Pointer to external dma fence or csl fence. (NOT SUPPORTED)
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* @flags : Synx flags for customization
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*/
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struct synx_create_params {
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const char *name;
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u32 *h_synx;
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void *fence;
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enum synx_create_flags flags;
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};
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/**
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* enum synx_merge_flags - Handle merge flags
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*
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* SYNX_MERGE_LOCAL_FENCE : Create local composite synx object. To be passed along
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* with SYNX_MERGE_NOTIFY_ON_ALL.
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* SYNX_MERGE_GLOBAL_FENCE : Create global composite synx object. To be passed along
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* with SYNX_MERGE_NOTIFY_ON_ALL.
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* SYNX_MERGE_NOTIFY_ON_ALL : Notify on signaling of ALL objects.
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* Clients must pass:
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* a. SYNX_MERGE_LOCAL_FENCE|SYNX_MERGE_NOTIFY_ON_ALL
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* to create local composite synx object and notify
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* it when all child synx objects are signaled.
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* b. SYNX_MERGE_GLOBAL_FENCE|SYNX_MERGE_NOTIFY_ON_ALL
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* to create global composite synx object and notify
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* it when all child synx objects are signaled.
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* SYNX_MERGE_NOTIFY_ON_ANY : Notify on signaling of ANY object. (NOT SUPPORTED)
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*/
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enum synx_merge_flags {
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SYNX_MERGE_LOCAL_FENCE = 0x01,
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SYNX_MERGE_GLOBAL_FENCE = 0x02,
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SYNX_MERGE_NOTIFY_ON_ALL = 0x04,
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SYNX_MERGE_NOTIFY_ON_ANY = 0x08,
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};
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/*
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* struct synx_merge_params - Synx merge parameters
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*
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* @h_synxs : Pointer to a array of synx handles to be merged
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* @flags : Merge flags
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* @num_objs : Number of synx handles to be merged (in array h_synxs).
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* @h_merged_obj : Merged synx handle (filled by function)
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*/
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struct synx_merge_params {
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u32 *h_synxs;
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enum synx_merge_flags flags;
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u32 num_objs;
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u32 *h_merged_obj;
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};
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/**
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* enum synx_import_type - Import type
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*
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* SYNX_IMPORT_INDV_PARAMS : Import filled with synx_import_indv_params struct
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* SYNX_IMPORT_ARR_PARAMS : Import filled with synx_import_arr_params struct
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*/
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enum synx_import_type {
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SYNX_IMPORT_INDV_PARAMS = 0x01,
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SYNX_IMPORT_ARR_PARAMS = 0x02,
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};
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/**
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* struct synx_import_indv_params - Synx import indv parameters
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*
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* @new_h_synxs : Pointer to new synx object
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* (filled by the function)
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* The new handle/s should be used by importing
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* process for all synx api operations and
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* for sharing with FW cores.
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* @flags : Synx import flags
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* @fence : Pointer to DMA fence fd or synx handle.
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*/
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struct synx_import_indv_params {
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u32 *new_h_synx;
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enum synx_import_flags flags;
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void *fence;
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};
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/**
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* struct synx_import_arr_params - Synx import arr parameters
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*
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* @list : List of synx_import_indv_params
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* @num_fences : Number of fences or synx handles to be imported
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*/
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struct synx_import_arr_params {
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struct synx_import_indv_params *list;
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u32 num_fences;
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};
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/**
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* struct synx_import_params - Synx import parameters
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*
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* @type : Import params type filled by client
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* @indv : Params to import an individual handle or fence
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* @arr : Params to import an array of handles or fences
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*/
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struct synx_import_params {
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enum synx_import_type type;
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union {
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struct synx_import_indv_params indv;
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struct synx_import_arr_params arr;
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};
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};
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/**
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* struct synx_callback_params - Synx callback parameters
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*
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* @h_synx : Synx object handle
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* @cb_func : Pointer to callback func to be invoked.
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* @userdata : Opaque pointer passed back with callback as data
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* @cancel_cb_func : Pointer to callback to ack cancellation
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* @timeout_ms : Timeout in ms. SYNX_NO_TIMEOUT if no timeout.
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*/
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struct synx_callback_params {
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u32 h_synx;
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synx_user_callback_t cb_func;
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void *userdata;
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synx_user_callback_t cancel_cb_func;
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u64 timeout_ms;
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};
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/* Kernel APIs */
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/* synx_register_ops - Register operations for external synchronization (NOT SUPPORTED)
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*
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* Register with synx for enabling external synchronization through bind
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*
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* @param params : Pointer to register params
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*
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* @return Status of operation. SYNX_SUCCESS in case of success.
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* -SYNX_INVALID will be returned if params are invalid.
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* -SYNX_NOMEM will be returned if bind ops cannot be registered due to
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* insufficient memory.
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* -SYNX_ALREADY will be returned if type already in use.
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*/
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int synx_register_ops(const struct synx_register_params *params);
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/**
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* synx_deregister_ops - De-register external synchronization operations (NOT SUPPORTED)
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*
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* @param params : Pointer to register params
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*
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* @return Status of operation. SYNX_SUCCESS in case of success.
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* -SYNX_INVALID will be returned if record not found.
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*/
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int synx_deregister_ops(const struct synx_register_params *params);
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/**
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* synx_initialize - Initializes a new client session
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*
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* @param params : Pointer to session init params
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*
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* @return Client session pointer on success. NULL or error in case of failure.
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*/
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struct synx_session *synx_initialize(struct synx_initialization_params *params);
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/**
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* synx_uninitialize - Destroys the client session
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*
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* @param session : Session ptr (returned from synx_initialize)
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*
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* @return Status of operation. Negative in case of error, SYNX_SUCCESS otherwise.
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*/
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int synx_uninitialize(struct synx_session *session);
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/**
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* synx_create - Creates a synx object
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*
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* Creates a new synx obj and returns the handle to client. There can be
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* maximum of 4095 global synx handles or local synx handles across
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* sessions.
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*
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* @param session : Session ptr (returned from synx_initialize)
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* @param params : Pointer to create params
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*
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* @return Status of operation. Negative in case of error, SYNX_SUCCESS otherwise.
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*/
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int synx_create(struct synx_session *session, struct synx_create_params *params);
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/**
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* synx_async_wait - Registers a callback with a synx object
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*
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* Clients can register maximum of 64 callbacks functions per
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* synx session. Clients should register callback functions with minimal computation.
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*
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* @param session : Session ptr (returned from synx_initialize)
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* @param params : Callback params.
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* cancel_cb_func in callback params is optional with this API.
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*
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* @return Status of operation. Negative in case of error, SYNX_SUCCESS otherwise.
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*/
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int synx_async_wait(struct synx_session *session, struct synx_callback_params *params);
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/**
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* synx_cancel_async_wait - De-registers a callback with a synx object
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*
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* This API will cancel one instance of callback function (mapped
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* with userdata and h_synx) provided in cb_func of callback params.
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*
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* @param session : Session ptr (returned from synx_initialize)
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* @param params : Callback params
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*
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* @return Status of operation.Negative in case of error, SYNX_SUCCESS otherwise.
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*/
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int synx_cancel_async_wait(struct synx_session *session,
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struct synx_callback_params *params);
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/**
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* synx_signal - Signals a synx object with the status argument.
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*
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* This function will signal the synx object referenced by h_synx
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* and invoke any external binding synx objs.
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* The status parameter will indicate whether the entity
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* performing the signaling wants to convey an error case or a success case.
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*
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* @param session : Session ptr (returned from synx_initialize)
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* @param h_synx : Synx object handle
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* @param status : Status of signaling.
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* Clients can send custom signaling status
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* beyond SYNX_STATE_SIGNALED_MAX.
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*
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* @return Status of operation. Negative in case of error. SYNX_SUCCESS otherwise.
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*/
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int synx_signal(struct synx_session *session, u32 h_synx,
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enum synx_signal_status status);
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/**
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* synx_merge - Merges multiple synx objects
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*
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* This function will merge multiple synx objects into a synx group.
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*
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* @param session : Session ptr (returned from synx_initialize)
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* @param params : Merge params
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*
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* @return Status of operation. Negative in case of error. SYNX_SUCCESS otherwise.
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|
*/
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int synx_merge(struct synx_session *session, struct synx_merge_params *params);
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|
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/**
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* synx_wait - Waits for a synx object synchronously
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*
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|
* Does a wait on the synx object identified by h_synx for a maximum
|
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* of timeout_ms milliseconds. Must not be called from interrupt context as
|
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* this API can sleep.
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|
*
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* @param session : Session ptr (returned from synx_initialize)
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* @param h_synx : Synx object handle to be waited upon
|
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* @param timeout_ms : Timeout in ms
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|
*
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* @return Status of synx object if handle is signaled. -SYNX_INVAL if synx object
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* is in bad state or arguments are invalid, -SYNX_TIMEOUT if wait times out.
|
|
*/
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int synx_wait(struct synx_session *session, u32 h_synx, u64 timeout_ms);
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|
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/**
|
|
* synx_get_status - Returns the status of the synx object.
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|
*
|
|
* This API should not be used in polling mode to know if the handle
|
|
* is signaled or not.
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|
* Clients need to explicitly wait using synx_wait() or synx_async_wait()
|
|
*
|
|
* @param session : Session ptr (returned from synx_initialize)
|
|
* @param h_synx : Synx object handle
|
|
*
|
|
* @return Status of the synx object
|
|
*/
|
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int synx_get_status(struct synx_session *session, u32 h_synx);
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|
|
/**
|
|
* synx_import - Imports (looks up) synx object from given handle or fence
|
|
* *
|
|
* @param session : Session ptr (returned from synx_initialize)
|
|
* @param params : Pointer to import params
|
|
*
|
|
* @return Status of operation. Negative in case of failure, SYNX_SUCCESS otherwise.
|
|
*/
|
|
int synx_import(struct synx_session *session, struct synx_import_params *params);
|
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|
|
/**
|
|
* synx_get_fence - Get the native fence backing the synx object
|
|
*
|
|
* Synx framework will take additional reference on dma fence and returns the native
|
|
* fence. Clients need to release additional reference explicitly by calling kref_put.
|
|
*
|
|
* @param session : Session ptr (returned from synx_initialize)
|
|
* @param h_synx : Synx object handle
|
|
*
|
|
* @return Fence pointer in case of success and NULL in case of failure.
|
|
*/
|
|
void *synx_get_fence(struct synx_session *session, u32 h_synx);
|
|
|
|
/**
|
|
* synx_release - Release the synx object.
|
|
*
|
|
* Every created, imported or merged synx object should be released.
|
|
*
|
|
* @param session : Session ptr (returned from synx_initialize)
|
|
* @param h_synx : Synx object handle to be destroyed
|
|
*
|
|
* @return Status of operation. Negative in case of error. SYNX_SUCCESS otherwise.
|
|
*/
|
|
int synx_release(struct synx_session *session, u32 h_synx);
|
|
|
|
/**
|
|
* synx_recover - Recover any possible handle leaks
|
|
*
|
|
* Function should be called on HW hang/reset to
|
|
* recover the Synx handles shared. This cleans up
|
|
* synx handles owned by subsystem under hang/reset, and avoids
|
|
* potential resource leaks.
|
|
*
|
|
* Function does not destroy the session, but only
|
|
* recover synx handles belonging to the session.
|
|
* Synx session would still be active and clients
|
|
* need to destroy the session explicitly through
|
|
* synx_uninitialize API.
|
|
*
|
|
* All the unsignaled handles owned/imported by the core at the time of reset
|
|
* will be signaled by synx framework on behalf of hung core with SYNX_STATE_SIGNALED_SSR.
|
|
*
|
|
* @param id : Client ID of core to recover
|
|
*
|
|
* @return Status of operation. Negative in case of error. SYNX_SUCCESS otherwise.
|
|
*/
|
|
int synx_recover(enum synx_client_id id);
|
|
|
|
#endif /* __SYNX_API_H__ */
|