/** include/asm-arm/arch-msm/msm_rpcrouter.h * * Copyright (C) 2007 Google, Inc. * Copyright (c) 2007-2009 QUALCOMM Incorporated * Author: San Mehat * * 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 #include #include /* 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 /* callback ID for NULL callback function is -1 */ #define MSM_RPC_CLIENT_NULL_CB_ID 0xffffffff #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) 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 #define MSM_RPC_ENABLE_RECEIVE (0x10000) /* 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_xdr { void *in_buf; uint32_t in_size; uint32_t in_index; struct mutex in_lock; void *out_buf; uint32_t out_size; uint32_t out_index; struct mutex out_lock; struct msm_rpc_endpoint *ept; }; struct msm_rpc_server { struct list_head list; uint32_t flags; uint32_t prog; uint32_t vers; #ifdef CONFIG_ARCH_MSM7X30 struct mutex cb_req_lock; struct msm_rpc_endpoint *cb_ept; struct msm_rpc_xdr cb_xdr; uint32_t version; #endif int (*rpc_call)(struct msm_rpc_server *server, struct rpc_request_hdr *req, unsigned len); #ifdef CONFIG_ARCH_MSM7X30 int (*rpc_call2)(struct msm_rpc_server *server, struct rpc_request_hdr *req, struct msm_rpc_xdr *xdr); #endif }; int msm_rpc_create_server(struct msm_rpc_server *server); int msm_rpc_create_server2(struct msm_rpc_server *server); #define MSM_RPC_MSGSIZE_MAX 8192 struct msm_rpc_client; struct msm_rpc_client { struct task_struct *read_thread; struct task_struct *cb_thread; struct msm_rpc_endpoint *ept; wait_queue_head_t reply_wait; uint32_t prog, ver; void *buf; struct msm_rpc_xdr xdr; struct msm_rpc_xdr cb_xdr; uint32_t version; int (*cb_func)(struct msm_rpc_client *, void *, int); int (*cb_func2)(struct msm_rpc_client *, struct rpc_request_hdr *req, struct msm_rpc_xdr *); void *cb_buf; int cb_size; struct list_head cb_item_list; struct mutex cb_item_list_lock; wait_queue_head_t cb_wait; int cb_avail; atomic_t next_cb_id; struct mutex cb_list_lock; struct list_head cb_list; uint32_t exit_flag; struct completion complete; struct completion cb_complete; struct mutex req_lock; }; struct msm_rpc_client_info { uint32_t pid; uint32_t cid; uint32_t prog; uint32_t vers; }; struct msm_rpc_client *msm_rpc_register_client( const char *name, uint32_t prog, uint32_t ver, uint32_t create_cb_thread, int (*cb_func)(struct msm_rpc_client *, void *, int)); struct msm_rpc_client *msm_rpc_register_client2( const char *name, uint32_t prog, uint32_t ver, uint32_t create_cb_thread, int (*cb_func)(struct msm_rpc_client *, struct rpc_request_hdr *req, struct msm_rpc_xdr *xdr)); int msm_rpc_unregister_client(struct msm_rpc_client *client); int msm_rpc_client_req(struct msm_rpc_client *client, uint32_t proc, int (*arg_func)(struct msm_rpc_client *, void *, void *), void *arg_data, int (*result_func)(struct msm_rpc_client *, void *, void *), void *result_data, long timeout); int msm_rpc_client_req2(struct msm_rpc_client *client, uint32_t proc, int (*arg_func)(struct msm_rpc_client *, struct msm_rpc_xdr *, void *), void *arg_data, int (*result_func)(struct msm_rpc_client *, struct msm_rpc_xdr *, void *), void *result_data, long timeout); void *msm_rpc_start_accepted_reply(struct msm_rpc_client *client, uint32_t xid, uint32_t accept_status); int msm_rpc_send_accepted_reply(struct msm_rpc_client *client, uint32_t size); void *msm_rpc_server_start_accepted_reply(struct msm_rpc_server *server, uint32_t xid, uint32_t accept_status); int msm_rpc_server_send_accepted_reply(struct msm_rpc_server *server, uint32_t size); int msm_rpc_add_cb_func(struct msm_rpc_client *client, void *cb_func); void *msm_rpc_get_cb_func(struct msm_rpc_client *client, uint32_t cb_id); void msm_rpc_remove_cb_func(struct msm_rpc_client *client, void *cb_func); int msm_rpc_server_cb_req(struct msm_rpc_server *server, struct msm_rpc_client_info *clnt_info, uint32_t cb_proc, int (*arg_func)(struct msm_rpc_server *server, void *buf, void *data), void *arg_data, int (*ret_func)(struct msm_rpc_server *server, void *buf, void *data), void *ret_data, long timeout); int msm_rpc_server_cb_req2(struct msm_rpc_server *server, struct msm_rpc_client_info *clnt_info, uint32_t cb_proc, int (*arg_func)(struct msm_rpc_server *server, struct msm_rpc_xdr *xdr, void *data), void *arg_data, int (*ret_func)(struct msm_rpc_server *server, struct msm_rpc_xdr *xdr, void *data), void *ret_data, long timeout); void msm_rpc_server_get_requesting_client( struct msm_rpc_client_info *clnt_info); int xdr_send_pointer(struct msm_rpc_xdr *xdr, void **obj, uint32_t obj_size, void *xdr_op); int xdr_recv_pointer(struct msm_rpc_xdr *xdr, void **obj, uint32_t obj_size, void *xdr_op); int xdr_send_array(struct msm_rpc_xdr *xdr, void **addr, uint32_t *size, uint32_t maxsize, uint32_t elm_size, void *xdr_op); int xdr_recv_array(struct msm_rpc_xdr *xdr, void **addr, uint32_t *size, uint32_t maxsize, uint32_t elm_size, void *xdr_op); int xdr_recv_req(struct msm_rpc_xdr *xdr, struct rpc_request_hdr *req); int xdr_recv_reply(struct msm_rpc_xdr *xdr, struct rpc_reply_hdr *reply); int xdr_start_request(struct msm_rpc_xdr *xdr, uint32_t prog, uint32_t ver, uint32_t proc); int xdr_start_accepted_reply(struct msm_rpc_xdr *xdr, uint32_t accept_status); int xdr_send_msg(struct msm_rpc_xdr *xdr); #endif