mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-31 18:09:19 +00:00
179 lines
5.5 KiB
C
179 lines
5.5 KiB
C
/* Copyright (c) 2011-2015, 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 _IPC_ROUTER_XPRT_H
|
|
#define _IPC_ROUTER_XPRT_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/list.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/msm_ipc.h>
|
|
#include <linux/ipc_router.h>
|
|
|
|
#define IPC_ROUTER_XPRT_EVENT_DATA 1
|
|
#define IPC_ROUTER_XPRT_EVENT_OPEN 2
|
|
#define IPC_ROUTER_XPRT_EVENT_CLOSE 3
|
|
|
|
#define FRAG_PKT_WRITE_ENABLE 0x1
|
|
|
|
/**
|
|
* rr_header_v1 - IPC Router header version 1
|
|
* @version: Version information.
|
|
* @type: IPC Router Message Type.
|
|
* @src_node_id: Source Node ID of the message.
|
|
* @src_port_id: Source Port ID of the message.
|
|
* @control_flag: Flag to indicate flow control.
|
|
* @size: Size of the IPC Router payload.
|
|
* @dst_node_id: Destination Node ID of the message.
|
|
* @dst_port_id: Destination Port ID of the message.
|
|
*/
|
|
struct rr_header_v1 {
|
|
uint32_t version;
|
|
uint32_t type;
|
|
uint32_t src_node_id;
|
|
uint32_t src_port_id;
|
|
uint32_t control_flag;
|
|
uint32_t size;
|
|
uint32_t dst_node_id;
|
|
uint32_t dst_port_id;
|
|
};
|
|
|
|
/**
|
|
* rr_header_v2 - IPC Router header version 2
|
|
* @version: Version information.
|
|
* @type: IPC Router Message Type.
|
|
* @control_flag: Flags to indicate flow control, optional header etc.
|
|
* @opt_len: Combined size of the all optional headers in units of words.
|
|
* @size: Size of the IPC Router payload.
|
|
* @src_node_id: Source Node ID of the message.
|
|
* @src_port_id: Source Port ID of the message.
|
|
* @dst_node_id: Destination Node ID of the message.
|
|
* @dst_port_id: Destination Port ID of the message.
|
|
*/
|
|
struct rr_header_v2 {
|
|
uint8_t version;
|
|
uint8_t type;
|
|
uint8_t control_flag;
|
|
uint8_t opt_len;
|
|
uint32_t size;
|
|
uint16_t src_node_id;
|
|
uint16_t src_port_id;
|
|
uint16_t dst_node_id;
|
|
uint16_t dst_port_id;
|
|
} __attribute__((__packed__));
|
|
|
|
union rr_header {
|
|
struct rr_header_v1 hdr_v1;
|
|
struct rr_header_v2 hdr_v2;
|
|
};
|
|
|
|
/**
|
|
* rr_opt_hdr - Optional header for IPC Router header version 2
|
|
* @len: Total length of the optional header.
|
|
* @data: Pointer to the actual optional header.
|
|
*/
|
|
struct rr_opt_hdr {
|
|
size_t len;
|
|
unsigned char *data;
|
|
};
|
|
|
|
#define IPC_ROUTER_HDR_SIZE sizeof(union rr_header)
|
|
#define IPCR_WORD_SIZE 4
|
|
|
|
/**
|
|
* rr_packet - Router to Router packet structure
|
|
* @list: Pointer to prev & next packets in a port's rx list.
|
|
* @hdr: Header information extracted from or prepended to a packet.
|
|
* @opt_hdr: Optinal header information.
|
|
* @pkt_fragment_q: Queue of SKBs containing payload.
|
|
* @length: Length of data in the chain of SKBs
|
|
*/
|
|
struct rr_packet {
|
|
struct list_head list;
|
|
struct rr_header_v1 hdr;
|
|
struct rr_opt_hdr opt_hdr;
|
|
struct sk_buff_head *pkt_fragment_q;
|
|
uint32_t length;
|
|
};
|
|
|
|
/**
|
|
* msm_ipc_router_xprt - Structure to hold XPRT specific information
|
|
* @name: Name of the XPRT.
|
|
* @link_id: Network cluster ID to which the XPRT belongs to.
|
|
* @priv: XPRT's private data.
|
|
* @get_version: Method to get header version supported by the XPRT.
|
|
* @get_option: Method to get XPRT specific options.
|
|
* @read_avail: Method to get data size available to be read from the XPRT.
|
|
* @read: Method to read data from the XPRT.
|
|
* @write_avail: Method to get write space available in the XPRT.
|
|
* @write: Method to write data to the XPRT.
|
|
* @close: Method to close the XPRT.
|
|
* @sft_close_done: Method to indicate to the XPRT that handling of reset
|
|
* event is complete.
|
|
*/
|
|
struct msm_ipc_router_xprt {
|
|
char *name;
|
|
uint32_t link_id;
|
|
void *priv;
|
|
|
|
int (*get_version)(struct msm_ipc_router_xprt *xprt);
|
|
int (*get_option)(struct msm_ipc_router_xprt *xprt);
|
|
int (*read_avail)(struct msm_ipc_router_xprt *xprt);
|
|
int (*read)(void *data, uint32_t len,
|
|
struct msm_ipc_router_xprt *xprt);
|
|
int (*write_avail)(struct msm_ipc_router_xprt *xprt);
|
|
int (*write)(void *data, uint32_t len,
|
|
struct msm_ipc_router_xprt *xprt);
|
|
int (*close)(struct msm_ipc_router_xprt *xprt);
|
|
void (*sft_close_done)(struct msm_ipc_router_xprt *xprt);
|
|
};
|
|
|
|
void msm_ipc_router_xprt_notify(struct msm_ipc_router_xprt *xprt,
|
|
unsigned event,
|
|
void *data);
|
|
|
|
/**
|
|
* create_pkt() - Create a Router packet
|
|
* @data: SKB queue to be contained inside the packet.
|
|
*
|
|
* @return: pointer to packet on success, NULL on failure.
|
|
*/
|
|
struct rr_packet *create_pkt(struct sk_buff_head *data);
|
|
struct rr_packet *clone_pkt(struct rr_packet *pkt);
|
|
void release_pkt(struct rr_packet *pkt);
|
|
|
|
/**
|
|
* ipc_router_peek_pkt_size() - Peek into the packet header to get potential packet size
|
|
* @data: Starting address of the packet which points to router header.
|
|
*
|
|
* @returns: potential packet size on success, < 0 on error.
|
|
*
|
|
* This function is used by the underlying transport abstraction layer to
|
|
* peek into the potential packet size of an incoming packet. This information
|
|
* is used to perform link layer fragmentation and re-assembly
|
|
*/
|
|
int ipc_router_peek_pkt_size(char *data);
|
|
|
|
#if defined CONFIG_MSM_IPC_ROUTER_SMD_XPRT || CONFIG_MSM_IPC_ROUTER_GLINK_XPRT
|
|
extern void *msm_ipc_load_default_node(void);
|
|
|
|
extern void msm_ipc_unload_default_node(void *pil);
|
|
#else
|
|
static inline void *msm_ipc_load_default_node(void)
|
|
{ return NULL; }
|
|
|
|
static inline void msm_ipc_unload_default_node(void *pil) { }
|
|
#endif
|
|
|
|
#endif
|