| /* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef _MSM_IPC_ROUTER_H |
| #define _MSM_IPC_ROUTER_H |
| |
| #include <linux/types.h> |
| #include <linux/socket.h> |
| #include <linux/errno.h> |
| #include <linux/mm.h> |
| #include <linux/list.h> |
| #include <linux/wakelock.h> |
| #include <linux/msm_ipc.h> |
| |
| #define MAX_WAKELOCK_NAME_SZ 32 |
| |
| /** |
| * enum msm_ipc_router_event - Events that will be generated by IPC Router |
| */ |
| enum msm_ipc_router_event { |
| MSM_IPC_ROUTER_READ_CB = 0, |
| MSM_IPC_ROUTER_WRITE_DONE, |
| MSM_IPC_ROUTER_RESUME_TX, |
| }; |
| |
| struct comm_mode_info { |
| int mode; |
| void *xprt_info; |
| }; |
| |
| struct msm_ipc_port { |
| struct list_head list; |
| |
| struct msm_ipc_port_addr this_port; |
| struct msm_ipc_port_name port_name; |
| uint32_t type; |
| unsigned flags; |
| spinlock_t port_lock; |
| struct comm_mode_info mode_info; |
| |
| struct list_head port_rx_q; |
| struct mutex port_rx_q_lock_lhb3; |
| char rx_wakelock_name[MAX_WAKELOCK_NAME_SZ]; |
| struct wake_lock port_rx_wake_lock; |
| wait_queue_head_t port_rx_wait_q; |
| |
| int restart_state; |
| spinlock_t restart_lock; |
| wait_queue_head_t restart_wait; |
| |
| void *endpoint; |
| void (*notify)(unsigned event, void *priv); |
| int (*check_send_permissions)(void *data); |
| |
| uint32_t num_tx; |
| uint32_t num_rx; |
| unsigned long num_tx_bytes; |
| unsigned long num_rx_bytes; |
| void *priv; |
| }; |
| |
| #ifdef CONFIG_MSM_IPC_ROUTER |
| /** |
| * msm_ipc_router_create_port() - Create a IPC Router port/endpoint |
| * @notify: Callback function to notify any event on the port. |
| * @priv: Private info to be passed while the notification is generated. |
| * |
| * @return: Pointer to the port on success, NULL on error. |
| */ |
| struct msm_ipc_port *msm_ipc_router_create_port( |
| void (*notify)(unsigned event, void *priv), |
| void *priv); |
| |
| /** |
| * msm_ipc_router_lookup_server_name() - Resolve server address |
| * @srv_name: Name<service:instance> of the server to be resolved. |
| * @srv_info: Buffer to hold the resolved address. |
| * @num_entries_in_array: Number of server info the buffer can hold. |
| * @lookup_mask: Mask to specify the range of instances to be resolved. |
| * |
| * @return: Number of server addresses resolved on success, < 0 on error. |
| */ |
| int msm_ipc_router_lookup_server_name(struct msm_ipc_port_name *srv_name, |
| struct msm_ipc_server_info *srv_info, |
| int num_entries_in_array, |
| uint32_t lookup_mask); |
| |
| /** |
| * msm_ipc_router_send_msg() - Send a message/packet |
| * @src: Sender's address/port. |
| * @dest: Destination address. |
| * @data: Pointer to the data to be sent. |
| * @data_len: Length of the data to be sent. |
| * |
| * @return: 0 on success, < 0 on error. |
| */ |
| int msm_ipc_router_send_msg(struct msm_ipc_port *src, |
| struct msm_ipc_addr *dest, |
| void *data, unsigned int data_len); |
| |
| /** |
| * msm_ipc_router_get_curr_pkt_size() - Get the packet size of the first |
| * packet in the rx queue |
| * @port_ptr: Port which owns the rx queue. |
| * |
| * @return: Returns the size of the first packet, if available. |
| * 0 if no packets available, < 0 on error. |
| */ |
| int msm_ipc_router_get_curr_pkt_size(struct msm_ipc_port *port_ptr); |
| |
| /** |
| * msm_ipc_router_read_msg() - Read a message/packet |
| * @port_ptr: Receiver's port/address. |
| * @data: Pointer containing the address of the received data. |
| * @src: Address of the sender/source. |
| * @len: Length of the data being read. |
| * |
| * @return: 0 on success, < 0 on error. |
| */ |
| int msm_ipc_router_read_msg(struct msm_ipc_port *port_ptr, |
| struct msm_ipc_addr *src, |
| unsigned char **data, |
| unsigned int *len); |
| |
| /** |
| * msm_ipc_router_close_port() - Close the port |
| * @port_ptr: Pointer to the port to be closed. |
| * |
| * @return: 0 on success, < 0 on error. |
| */ |
| int msm_ipc_router_close_port(struct msm_ipc_port *port_ptr); |
| |
| #else |
| |
| struct msm_ipc_port *msm_ipc_router_create_port( |
| void (*notify)(unsigned event, void *priv), |
| void *priv) |
| { |
| return NULL; |
| } |
| |
| int msm_ipc_router_lookup_server_name(struct msm_ipc_port_name *srv_name, |
| struct msm_ipc_server_info *srv_info, |
| int num_entries_in_array, |
| uint32_t lookup_mask) |
| { |
| return -ENODEV; |
| } |
| |
| int msm_ipc_router_send_msg(struct msm_ipc_port *src, |
| struct msm_ipc_addr *dest, |
| void *data, unsigned int data_len) |
| { |
| return -ENODEV; |
| } |
| |
| int msm_ipc_router_get_curr_pkt_size(struct msm_ipc_port *port_ptr) |
| { |
| return -ENODEV; |
| } |
| |
| int msm_ipc_router_read_msg(struct msm_ipc_port *port_ptr, |
| struct msm_ipc_addr *src, |
| unsigned char **data, |
| unsigned int *len) |
| { |
| return -ENODEV; |
| } |
| |
| int msm_ipc_router_close_port(struct msm_ipc_port *port_ptr) |
| { |
| return -ENODEV; |
| } |
| |
| #endif |
| |
| #endif |