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/** include/asm-arm/arch-msm/msm_rpcrouter.h
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2007-2009 QUALCOMM Incorporated
* Author: San Mehat <san@android.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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 __ASM__ARCH_MSM_RPCROUTER_H
#define __ASM__ARCH_MSM_RPCROUTER_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/platform_device.h>
#if CONFIG_MSM_AMSS_VERSION >= 6350
/* RPC API version structure
* Version bit 31 : 1->hashkey versioning,
* 0->major-minor (backward compatible) versioning
* hashkey versioning:
* Version bits 31-0 hashkey
* major-minor (backward compatible) versioning
* Version bits 30-28 reserved (no match)
* Version bits 27-16 major (must match)
* Version bits 15-0 minor (greater or equal)
*/
#define RPC_VERSION_MODE_MASK 0x80000000
#define RPC_VERSION_MAJOR_MASK 0x0fff0000
#define RPC_VERSION_MAJOR_OFFSET 16
#define RPC_VERSION_MINOR_MASK 0x0000ffff
#define MSM_RPC_VERS(major, minor) \
((uint32_t)((((major) << RPC_VERSION_MAJOR_OFFSET) & \
RPC_VERSION_MAJOR_MASK) | \
((minor) & RPC_VERSION_MINOR_MASK)))
#define MSM_RPC_GET_MAJOR(vers) (((vers) & RPC_VERSION_MAJOR_MASK) >> \
RPC_VERSION_MAJOR_OFFSET)
#define MSM_RPC_GET_MINOR(vers) ((vers) & RPC_VERSION_MINOR_MASK)
#else
#define MSM_RPC_VERS(major, minor) (major)
#define MSM_RPC_GET_MAJOR(vers) (vers)
#define MSM_RPC_GET_MINOR(vers) 0
#endif
struct msm_rpc_endpoint;
struct rpcsvr_platform_device
{
struct platform_device base;
uint32_t prog;
uint32_t vers;
};
#define RPC_DATA_IN 0
/*
* Structures for sending / receiving direct RPC requests
* XXX: Any cred/verif lengths > 0 not supported
*/
struct rpc_request_hdr
{
uint32_t xid;
uint32_t type; /* 0 */
uint32_t rpc_vers; /* 2 */
uint32_t prog;
uint32_t vers;
uint32_t procedure;
uint32_t cred_flavor;
uint32_t cred_length;
uint32_t verf_flavor;
uint32_t verf_length;
};
typedef struct
{
uint32_t low;
uint32_t high;
} rpc_reply_progmismatch_data;
typedef struct
{
} rpc_denied_reply_hdr;
typedef struct
{
uint32_t verf_flavor;
uint32_t verf_length;
uint32_t accept_stat;
#define RPC_ACCEPTSTAT_SUCCESS 0
#define RPC_ACCEPTSTAT_PROG_UNAVAIL 1
#define RPC_ACCEPTSTAT_PROG_MISMATCH 2
#define RPC_ACCEPTSTAT_PROC_UNAVAIL 3
#define RPC_ACCEPTSTAT_GARBAGE_ARGS 4
#define RPC_ACCEPTSTAT_SYSTEM_ERR 5
#define RPC_ACCEPTSTAT_PROG_LOCKED 6
/*
* Following data is dependant on accept_stat
* If ACCEPTSTAT == PROG_MISMATCH then there is a
* 'rpc_reply_progmismatch_data' structure following the header.
* Otherwise the data is procedure specific
*/
} rpc_accepted_reply_hdr;
struct rpc_reply_hdr
{
uint32_t xid;
uint32_t type;
uint32_t reply_stat;
#define RPCMSG_REPLYSTAT_ACCEPTED 0
#define RPCMSG_REPLYSTAT_DENIED 1
union {
rpc_accepted_reply_hdr acc_hdr;
rpc_denied_reply_hdr dny_hdr;
} data;
};
/* flags for msm_rpc_connect() */
#define MSM_RPC_UNINTERRUPTIBLE 0x0001
/* use IS_ERR() to check for failure */
struct msm_rpc_endpoint *msm_rpc_open(void);
/* Connect with the specified server version */
struct msm_rpc_endpoint *msm_rpc_connect(uint32_t prog, uint32_t vers, unsigned flags);
uint32_t msm_rpc_get_vers(struct msm_rpc_endpoint *ept);
/* check if server version can handle client requested version */
int msm_rpc_is_compatible_version(uint32_t server_version,
uint32_t client_version);
int msm_rpc_close(struct msm_rpc_endpoint *ept);
int msm_rpc_write(struct msm_rpc_endpoint *ept,
void *data, int len);
int msm_rpc_read(struct msm_rpc_endpoint *ept,
void **data, unsigned len, long timeout);
void msm_rpc_setup_req(struct rpc_request_hdr *hdr,
uint32_t prog, uint32_t vers, uint32_t proc);
int msm_rpc_register_server(struct msm_rpc_endpoint *ept,
uint32_t prog, uint32_t vers);
int msm_rpc_unregister_server(struct msm_rpc_endpoint *ept,
uint32_t prog, uint32_t vers);
/* simple blocking rpc call
*
* request is mandatory and must have a rpc_request_hdr
* at the start. The header will be filled out for you.
*
* reply provides a buffer for replies of reply_max_size
*/
int msm_rpc_call_reply(struct msm_rpc_endpoint *ept, uint32_t proc,
void *request, int request_size,
void *reply, int reply_max_size,
long timeout);
int msm_rpc_call(struct msm_rpc_endpoint *ept, uint32_t proc,
void *request, int request_size,
long timeout);
struct msm_rpc_server
{
struct list_head list;
uint32_t flags;
uint32_t prog;
uint32_t vers;
int (*rpc_call)(struct msm_rpc_server *server,
struct rpc_request_hdr *req, unsigned len);
};
int msm_rpc_create_server(struct msm_rpc_server *server);
#endif
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