285 lines
8.5 KiB
C
285 lines
8.5 KiB
C
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/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MSM_QMI_INTERFACE_H_
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#define _MSM_QMI_INTERFACE_H_
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/mm.h>
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#include <linux/list.h>
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#include <linux/socket.h>
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#include <linux/gfp.h>
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#include <linux/qmi_encdec.h>
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#include <linux/workqueue.h>
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#define QMI_COMMON_TLV_TYPE 0
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enum qmi_event_type {
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QMI_RECV_MSG = 1,
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QMI_SERVER_ARRIVE,
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QMI_SERVER_EXIT,
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};
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struct qmi_handle {
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void *src_port;
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void *dest_info;
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uint16_t next_txn_id;
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struct list_head txn_list;
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struct mutex handle_lock;
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spinlock_t notify_lock;
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void (*notify)(struct qmi_handle *handle, enum qmi_event_type event,
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void *notify_priv);
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void *notify_priv;
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void (*ind_cb)(struct qmi_handle *handle,
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unsigned int msg_id, void *msg,
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unsigned int msg_len, void *ind_cb_priv);
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void *ind_cb_priv;
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int handle_reset;
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wait_queue_head_t reset_waitq;
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struct list_head pending_txn_list;
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struct delayed_work resume_tx_work;
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};
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enum qmi_result_type_v01 {
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/* To force a 32 bit signed enum. Do not change or use*/
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QMI_RESULT_TYPE_MIN_ENUM_VAL_V01 = INT_MIN,
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QMI_RESULT_SUCCESS_V01 = 0,
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QMI_RESULT_FAILURE_V01 = 1,
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QMI_RESULT_TYPE_MAX_ENUM_VAL_V01 = INT_MAX,
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};
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enum qmi_error_type_v01 {
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/* To force a 32 bit signed enum. Do not change or use*/
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QMI_ERROR_TYPE_MIN_ENUM_VAL_V01 = INT_MIN,
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QMI_ERR_NONE_V01 = 0x0000,
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QMI_ERROR_MALFORMED_MSG_V01 = 0x0001,
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QMI_ERR_NO_MEMORY_V01 = 0x0002,
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QMI_ERR_INTERNAL_V01 = 0x0003,
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QMI_ERR_INVALID_ID_V01 = 0x0029,
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QMI_ERR_INCOMPATIBLE_STATE_V01 = 0x005A,
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QMI_ERROR_TYPE_MAX_ENUM_VAL_V01 = INT_MAX,
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};
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struct qmi_response_type_v01 {
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enum qmi_result_type_v01 result;
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enum qmi_error_type_v01 error;
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};
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#ifdef CONFIG_MSM_QMI_INTERFACE
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/* Element info array describing common qmi response structure */
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extern struct elem_info qmi_response_type_v01_ei[];
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#define get_qmi_response_type_v01_ei() qmi_response_type_v01_ei
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/**
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* qmi_handle_create() - Create a QMI handle
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* @notify: Callback to notify events on the handle created.
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* @notify_priv: Private information to be passed along with the notification.
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*
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* @return: Valid QMI handle on success, NULL on error.
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*/
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struct qmi_handle *qmi_handle_create(
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void (*notify)(struct qmi_handle *handle,
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enum qmi_event_type event, void *notify_priv),
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void *notify_priv);
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/**
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* qmi_handle_destroy() - Destroy the QMI handle
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* @handle: QMI handle to be destroyed.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_handle_destroy(struct qmi_handle *handle);
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/**
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* qmi_register_ind_cb() - Register the indication callback function
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* @handle: QMI handle with which the function is registered.
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* @ind_cb: Callback function to be registered.
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* @ind_cb_priv: Private data to be passed with the indication callback.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_register_ind_cb(struct qmi_handle *handle,
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void (*ind_cb)(struct qmi_handle *handle,
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unsigned int msg_id, void *msg,
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unsigned int msg_len, void *ind_cb_priv),
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void *ind_cb_priv);
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/**
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* qmi_send_req_wait() - Send a synchronous QMI request
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* @handle: QMI handle through which the QMI request is sent.
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* @request_desc: Structure describing the request data structure.
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* @req: Buffer containing the request data structure.
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* @req_len: Length of the request data structure.
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* @resp_desc: Structure describing the response data structure.
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* @resp: Buffer to hold the response data structure.
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* @resp_len: Length of the response data structure.
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* @timeout_ms: Timeout before a response is received.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_send_req_wait(struct qmi_handle *handle,
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struct msg_desc *req_desc,
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void *req, unsigned int req_len,
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struct msg_desc *resp_desc,
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void *resp, unsigned int resp_len,
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unsigned long timeout_ms);
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/**
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* qmi_send_req_nowait() - Send an asynchronous QMI request
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* @handle: QMI handle through which the QMI request is sent.
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* @request_desc: Structure describing the request data structure.
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* @req: Buffer containing the request data structure.
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* @req_len: Length of the request data structure.
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* @resp_desc: Structure describing the response data structure.
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* @resp: Buffer to hold the response data structure.
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* @resp_len: Length of the response data structure.
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* @resp_cb: Callback function to be invoked when the response arrives.
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* @resp_cb_data: Private information to be passed along with the callback.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_send_req_nowait(struct qmi_handle *handle,
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struct msg_desc *req_desc,
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void *req, unsigned int req_len,
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struct msg_desc *resp_desc,
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void *resp, unsigned int resp_len,
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void (*resp_cb)(struct qmi_handle *handle,
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unsigned int msg_id, void *msg,
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void *resp_cb_data,
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int stat),
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void *resp_cb_data);
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/**
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* qmi_recv_msg() - Receive the QMI message
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* @handle: Handle for which the QMI message has to be received.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_recv_msg(struct qmi_handle *handle);
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/**
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* qmi_connect_to_service() - Connect the QMI handle with a QMI service
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* @handle: QMI handle to be connected with the QMI service.
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* @service_id: Service id to identify the QMI service.
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* @instance_id: Instance id to identify the instance of the QMI service.
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*
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* @return: 0 on success, < 0 on error.
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*/
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int qmi_connect_to_service(struct qmi_handle *handle,
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uint32_t service_id, uint32_t instance_id);
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/**
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* qmi_svc_event_notifier_register() - Register a notifier block to receive
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* events regarding a QMI service
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* @service_id: Service ID to identify the QMI service.
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* @instance_id: Instance ID to identify the instance of the QMI service.
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* @nb: Notifier block used to receive the event.
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*
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* @return: 0 if successfully registered, < 0 on error.
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*/
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int qmi_svc_event_notifier_register(uint32_t service_id,
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uint32_t instance_id,
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struct notifier_block *nb);
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/**
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* qmi_svc_event_notifier_unregister() - Unregister service event
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* notifier block
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* @service_id: Service ID to identify the QMI service.
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* @instance_id: Instance ID to identify the instance of the QMI service.
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* @nb: Notifier block registered to receive the events.
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*
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* @return: 0 if successfully registered, < 0 on error.
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*/
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int qmi_svc_event_notifier_unregister(uint32_t service_id,
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uint32_t instance_id,
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struct notifier_block *nb);
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#else
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#define get_qmi_response_type_v01_ei() NULL
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static inline struct qmi_handle *qmi_handle_create(
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void (*notify)(struct qmi_handle *handle,
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enum qmi_event_type event, void *notify_priv),
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void *notify_priv)
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{
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return NULL;
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}
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static inline int qmi_handle_destroy(struct qmi_handle *handle)
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{
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return -ENODEV;
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}
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static inline int qmi_register_ind_cb(struct qmi_handle *handle,
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void (*ind_cb)(struct qmi_handle *handle,
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unsigned int msg_id, void *msg,
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unsigned int msg_len, void *ind_cb_priv),
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void *ind_cb_priv)
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{
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return -ENODEV;
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}
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static inline int qmi_send_req_wait(struct qmi_handle *handle,
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struct msg_desc *req_desc,
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void *req, unsigned int req_len,
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struct msg_desc *resp_desc,
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void *resp, unsigned int resp_len,
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unsigned long timeout_ms)
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{
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return -ENODEV;
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}
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static inline int qmi_send_req_nowait(struct qmi_handle *handle,
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struct msg_desc *req_desc,
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void *req, unsigned int req_len,
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struct msg_desc *resp_desc,
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void *resp, unsigned int resp_len,
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void (*resp_cb)(struct qmi_handle *handle,
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unsigned int msg_id, void *msg,
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void *resp_cb_data),
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void *resp_cb_data)
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{
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return -ENODEV;
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}
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static inline int qmi_recv_msg(struct qmi_handle *handle)
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{
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return -ENODEV;
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}
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static inline int qmi_connect_to_service(struct qmi_handle *handle,
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uint32_t service_id,
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uint32_t instance_id)
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{
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return -ENODEV;
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}
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static inline int qmi_svc_event_notifier_register(uint32_t service_id,
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uint32_t instance_id,
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struct notifier_block *nb)
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{
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return -ENODEV;
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}
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static inline int qmi_svc_event_notifier_unregister(uint32_t service_id,
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uint32_t instance_id,
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struct notifier_block *nb)
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{
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return -ENODEV;
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}
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#endif
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#endif
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