WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/include/ipc/ipc.h


/*
 * Copyright (C) 2006 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
 /** @addtogroup genericipc
 * @{
 */
/** @file
 */
 
#ifndef __IPC_H__
#define __IPC_H__
 
/* Length of data being transfered with IPC call */
/* - the uspace may not be able to utilize full length */
#define IPC_CALL_LEN    4
 
/** Maximum active async calls per thread */
#ifdef CONFIG_DEBUG
# define IPC_MAX_ASYNC_CALLS  4
#else
# define IPC_MAX_ASYNC_CALLS  4000
#endif
 
/* Flags for calls */
#define IPC_CALL_ANSWERED       (1<<0) /**< This is answer to a call */
#define IPC_CALL_STATIC_ALLOC   (1<<1) /**< This call will not be freed on error */
#define IPC_CALL_DISCARD_ANSWER (1<<2) /**< Answer will not be passed to
                    * userspace, will be discarded */
#define IPC_CALL_FORWARDED      (1<<3) /* Call was forwarded */
#define IPC_CALL_CONN_ME_TO     (1<<4) /* Identify connect_me_to answer */
#define IPC_CALL_NOTIF          (1<<5) /* Interrupt notification */
 
/* Flags of callid (the addresses are aligned at least to 4,
 * that is why we can use bottom 2 bits of the call address
 */
#define IPC_CALLID_ANSWERED       1 /**< Type of this msg is 'answer' */
#define IPC_CALLID_NOTIFICATION   2 /**< Type of this msg is 'notification' */
 
/* Return values from IPC_ASYNC */
#define IPC_CALLRET_FATAL         -1
#define IPC_CALLRET_TEMPORARY     -2
 
 
/* Macros for manipulating calling data */
#define IPC_SET_RETVAL(data, retval)   ((data).args[0] = (retval))
#define IPC_SET_METHOD(data, val)   ((data).args[0] = (val))
#define IPC_SET_ARG1(data, val)   ((data).args[1] = (val))
#define IPC_SET_ARG2(data, val)   ((data).args[2] = (val))
#define IPC_SET_ARG3(data, val)   ((data).args[3] = (val))
 
#define IPC_GET_METHOD(data)           ((data).args[0])
#define IPC_GET_RETVAL(data)           ((data).args[0])
 
#define IPC_GET_ARG1(data)              ((data).args[1])
#define IPC_GET_ARG2(data)              ((data).args[2])
#define IPC_GET_ARG3(data)              ((data).args[3])
 
/* Well known phone descriptors */
#define PHONE_NS              0
 
/* System-specific methods - only through special syscalls
 * These methods have special behaviour
 */
/** Protocol for CONNECT - TO - ME
 *
 * Calling process asks the callee to create a callback connection,
 * so that it can start initiating new messages.
 *
 * The protocol for negotiating is:
 * - sys_connect_to_me - sends a message IPC_M_CONNECTTOME
 * - sys_wait_for_call - upon receipt tries to allocate new phone
 *                       - if it fails, responds with ELIMIT
 *                     - passes call to userspace. If userspace
 *                       responds with error, phone is deallocated and
 *                       error is sent back to caller. Otherwise
 *                       the call is accepted and the response is sent back.
 *                     - the allocated phoneid is passed to userspace
 *                       (on the receiving sid) as ARG3 of the call.
 *                     - the caller obtains taskid of the called thread
 */
#define IPC_M_CONNECT_TO_ME     1
/** Protocol for CONNECT - ME - TO
 *
 * Calling process asks the callee to create for him a new connection.
 * E.g. the caller wants a name server to connect him to print server.
 *
 * The protocol for negotiating is:
 * - sys_connect_me_to - send a synchronous message to name server
 *                       indicating that it wants to be connected to some
 *                       service
 *                     - arg1/2 are user specified, arg3 contains
 *                       address of the phone that should be connected
 *                       (TODO: it leaks to userspace)
 *   recipient         -  if ipc_answer == 0, then accept connection
 *                     -  otherwise connection refused
 *                     -  recepient may forward message. Forwarding
 *                        system message
 *
 */
#define IPC_M_CONNECT_ME_TO     2
/** This message is sent to answerbox when the phone
 * is hung up
 */
#define IPC_M_PHONE_HUNGUP      3
 
/** Send as_area over IPC
 * - ARG1 - src base address
 * - ARG2 - size of src as(filled automatically by kernel)
 * - ARG3 - flags of the area being sent
 * - on answer ARG1 - dst base adress
 */
#define IPC_M_AS_AREA_SEND      5
 
/** Get as_area over IPC
 * - ARG1 - Where the area will be mapped
 * - ARG2 - Expected size of area
 * - ARG3 - User defined argument
 * on answer - the server sets ARG1 as src as address of the as_area
 * to be shared, ARG2 is set to rights that will be used for sharing,
 * which is returned as part of answer back to the receiver
 */
#define IPC_M_AS_AREA_RECV      6
 
 
/* Well-known methods */
#define IPC_M_LAST_SYSTEM     511
#define IPC_M_PING            512
/* User methods */
#define FIRST_USER_METHOD     1024
 
#ifdef KERNEL
 
#include <synch/mutex.h>
#include <synch/condvar.h>
#include <adt/list.h>
 
#define IPC_MAX_PHONES  16
 
typedef struct answerbox_s answerbox_t;
typedef struct phone_s phone_t;
typedef struct {
    __native args[IPC_CALL_LEN];
    phone_t *phone;
}ipc_data_t;
 
struct answerbox_s {
    SPINLOCK_DECLARE(lock);
 
    task_t *task;
 
    waitq_t wq;
 
    link_t connected_phones; /**< Phones connected to this answerbox */
    link_t calls;            /**< Received calls */
    link_t dispatched_calls; /* Should be hash table in the future */
 
    link_t answers;          /**< Answered calls */
 
    SPINLOCK_DECLARE(irq_lock);
    link_t irq_notifs;       /**< Notifications from IRQ handlers */
};
 
typedef enum {
    IPC_PHONE_FREE = 0,     /**< Phone is free and can be allocated */
    IPC_PHONE_CONNECTING,   /**< Phone is connecting somewhere */
    IPC_PHONE_CONNECTED,    /**< Phone is connected */
    IPC_PHONE_HUNGUP,  /**< Phone is hung up, waiting for answers to come */
    IPC_PHONE_SLAMMED       /**< Phone was hungup from server */
} ipc_phone_state_t;
 
/** Structure identifying phone (in TASK structure) */
struct phone_s {
    SPINLOCK_DECLARE(lock);
    link_t link;
    answerbox_t *callee;
    ipc_phone_state_t state;
    atomic_t active_calls;
};
 
typedef struct {
    link_t link;
 
    int flags;
 
    /* Identification of the caller */
    task_t *sender;
    /* The caller box is different from sender->answerbox
     * for synchronous calls
     */
    answerbox_t *callerbox;
 
    __native private; /**< Private data to internal IPC */
 
    ipc_data_t data;  /**< Data passed from/to userspace */
}call_t;
 
extern void ipc_init(void);
extern call_t * ipc_wait_for_call(answerbox_t *box, __u32 usec, int flags);
extern void ipc_answer(answerbox_t *box, call_t *request);
extern int ipc_call(phone_t *phone, call_t *call);
extern void ipc_call_sync(phone_t *phone, call_t *request);
extern void ipc_phone_init(phone_t *phone);
extern void ipc_phone_connect(phone_t *phone, answerbox_t *box);
extern void ipc_call_free(call_t *call);
extern call_t * ipc_call_alloc(int flags);
extern void ipc_answerbox_init(answerbox_t *box);
extern void ipc_call_static_init(call_t *call);
extern void task_print_list(void);
extern int ipc_forward(call_t *call, phone_t *newphone, answerbox_t *oldbox);
void ipc_cleanup(void);
int ipc_phone_hangup(phone_t *phone);
extern void ipc_backsend_err(phone_t *phone, call_t *call, __native err);
extern void ipc_print_task(task_id_t taskid);
 
extern answerbox_t *ipc_phone_0;
 
#endif
 
#endif
 
 /** @}
 */
 
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/include/ipc/ipc.h – Rev 1693 → 1702

Rev 1693		Rev 1702
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (C) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
-		29	/** @addtogroup genericipc
-		30	* @{
-		31	*/
-		32	/** @file
-		33	*/
-		34
29	#ifndef __IPC_H__	35	#ifndef __IPC_H__
30	#define __IPC_H__	36	#define __IPC_H__
31		37
32	/* Length of data being transfered with IPC call */	38	/* Length of data being transfered with IPC call */
33	/* - the uspace may not be able to utilize full length */	39	/* - the uspace may not be able to utilize full length */
34	#define IPC_CALL_LEN 4	40	#define IPC_CALL_LEN 4
35		41
36	/** Maximum active async calls per thread */	42	/** Maximum active async calls per thread */
37	#ifdef CONFIG_DEBUG	43	#ifdef CONFIG_DEBUG
38	# define IPC_MAX_ASYNC_CALLS 4	44	# define IPC_MAX_ASYNC_CALLS 4
39	#else	45	#else
40	# define IPC_MAX_ASYNC_CALLS 4000	46	# define IPC_MAX_ASYNC_CALLS 4000
41	#endif	47	#endif
42		48
43	/* Flags for calls */	49	/* Flags for calls */
44	#define IPC_CALL_ANSWERED (1<<0) /*< This is answer to a call /	50	#define IPC_CALL_ANSWERED (1<<0) /*< This is answer to a call /
45	#define IPC_CALL_STATIC_ALLOC (1<<1) /*< This call will not be freed on error /	51	#define IPC_CALL_STATIC_ALLOC (1<<1) /*< This call will not be freed on error /
46	#define IPC_CALL_DISCARD_ANSWER (1<<2) /**< Answer will not be passed to	52	#define IPC_CALL_DISCARD_ANSWER (1<<2) /**< Answer will not be passed to
47	* userspace, will be discarded */	53	* userspace, will be discarded */
48	#define IPC_CALL_FORWARDED (1<<3) /* Call was forwarded */	54	#define IPC_CALL_FORWARDED (1<<3) /* Call was forwarded */
49	#define IPC_CALL_CONN_ME_TO (1<<4) /* Identify connect_me_to answer */	55	#define IPC_CALL_CONN_ME_TO (1<<4) /* Identify connect_me_to answer */
50	#define IPC_CALL_NOTIF (1<<5) /* Interrupt notification */	56	#define IPC_CALL_NOTIF (1<<5) /* Interrupt notification */
51		57
52	/* Flags of callid (the addresses are aligned at least to 4,	58	/* Flags of callid (the addresses are aligned at least to 4,
53	* that is why we can use bottom 2 bits of the call address	59	* that is why we can use bottom 2 bits of the call address
54	*/	60	*/
55	#define IPC_CALLID_ANSWERED 1 /*< Type of this msg is 'answer' /	61	#define IPC_CALLID_ANSWERED 1 /*< Type of this msg is 'answer' /
56	#define IPC_CALLID_NOTIFICATION 2 /*< Type of this msg is 'notification' /	62	#define IPC_CALLID_NOTIFICATION 2 /*< Type of this msg is 'notification' /
57		63
58	/* Return values from IPC_ASYNC */	64	/* Return values from IPC_ASYNC */
59	#define IPC_CALLRET_FATAL -1	65	#define IPC_CALLRET_FATAL -1
60	#define IPC_CALLRET_TEMPORARY -2	66	#define IPC_CALLRET_TEMPORARY -2
61		67
62		68
63	/* Macros for manipulating calling data */	69	/* Macros for manipulating calling data */
64	#define IPC_SET_RETVAL(data, retval) ((data).args[0] = (retval))	70	#define IPC_SET_RETVAL(data, retval) ((data).args[0] = (retval))
65	#define IPC_SET_METHOD(data, val) ((data).args[0] = (val))	71	#define IPC_SET_METHOD(data, val) ((data).args[0] = (val))
66	#define IPC_SET_ARG1(data, val) ((data).args[1] = (val))	72	#define IPC_SET_ARG1(data, val) ((data).args[1] = (val))
67	#define IPC_SET_ARG2(data, val) ((data).args[2] = (val))	73	#define IPC_SET_ARG2(data, val) ((data).args[2] = (val))
68	#define IPC_SET_ARG3(data, val) ((data).args[3] = (val))	74	#define IPC_SET_ARG3(data, val) ((data).args[3] = (val))
69		75
70	#define IPC_GET_METHOD(data) ((data).args[0])	76	#define IPC_GET_METHOD(data) ((data).args[0])
71	#define IPC_GET_RETVAL(data) ((data).args[0])	77	#define IPC_GET_RETVAL(data) ((data).args[0])
72		78
73	#define IPC_GET_ARG1(data) ((data).args[1])	79	#define IPC_GET_ARG1(data) ((data).args[1])
74	#define IPC_GET_ARG2(data) ((data).args[2])	80	#define IPC_GET_ARG2(data) ((data).args[2])
75	#define IPC_GET_ARG3(data) ((data).args[3])	81	#define IPC_GET_ARG3(data) ((data).args[3])
76		82
77	/* Well known phone descriptors */	83	/* Well known phone descriptors */
78	#define PHONE_NS 0	84	#define PHONE_NS 0
79		85
80	/* System-specific methods - only through special syscalls	86	/* System-specific methods - only through special syscalls
81	* These methods have special behaviour	87	* These methods have special behaviour
82	*/	88	*/
83	/** Protocol for CONNECT - TO - ME	89	/** Protocol for CONNECT - TO - ME
84	*	90	*
85	* Calling process asks the callee to create a callback connection,	91	* Calling process asks the callee to create a callback connection,
86	* so that it can start initiating new messages.	92	* so that it can start initiating new messages.
87	*	93	*
88	* The protocol for negotiating is:	94	* The protocol for negotiating is:
89	* - sys_connect_to_me - sends a message IPC_M_CONNECTTOME	95	* - sys_connect_to_me - sends a message IPC_M_CONNECTTOME
90	* - sys_wait_for_call - upon receipt tries to allocate new phone	96	* - sys_wait_for_call - upon receipt tries to allocate new phone
91	* - if it fails, responds with ELIMIT	97	* - if it fails, responds with ELIMIT
92	* - passes call to userspace. If userspace	98	* - passes call to userspace. If userspace
93	* responds with error, phone is deallocated and	99	* responds with error, phone is deallocated and
94	* error is sent back to caller. Otherwise	100	* error is sent back to caller. Otherwise
95	* the call is accepted and the response is sent back.	101	* the call is accepted and the response is sent back.
96	* - the allocated phoneid is passed to userspace	102	* - the allocated phoneid is passed to userspace
97	* (on the receiving sid) as ARG3 of the call.	103	* (on the receiving sid) as ARG3 of the call.
98	* - the caller obtains taskid of the called thread	104	* - the caller obtains taskid of the called thread
99	*/	105	*/
100	#define IPC_M_CONNECT_TO_ME 1	106	#define IPC_M_CONNECT_TO_ME 1
101	/** Protocol for CONNECT - ME - TO	107	/** Protocol for CONNECT - ME - TO
102	*	108	*
103	* Calling process asks the callee to create for him a new connection.	109	* Calling process asks the callee to create for him a new connection.
104	* E.g. the caller wants a name server to connect him to print server.	110	* E.g. the caller wants a name server to connect him to print server.
105	*	111	*
106	* The protocol for negotiating is:	112	* The protocol for negotiating is:
107	* - sys_connect_me_to - send a synchronous message to name server	113	* - sys_connect_me_to - send a synchronous message to name server
108	* indicating that it wants to be connected to some	114	* indicating that it wants to be connected to some
109	* service	115	* service
110	* - arg1/2 are user specified, arg3 contains	116	* - arg1/2 are user specified, arg3 contains
111	* address of the phone that should be connected	117	* address of the phone that should be connected
112	* (TODO: it leaks to userspace)	118	* (TODO: it leaks to userspace)
113	* recipient - if ipc_answer == 0, then accept connection	119	* recipient - if ipc_answer == 0, then accept connection
114	* - otherwise connection refused	120	* - otherwise connection refused
115	* - recepient may forward message. Forwarding	121	* - recepient may forward message. Forwarding
116	* system message	122	* system message
117	*	123	*
118	*/	124	*/
119	#define IPC_M_CONNECT_ME_TO 2	125	#define IPC_M_CONNECT_ME_TO 2
120	/** This message is sent to answerbox when the phone	126	/** This message is sent to answerbox when the phone
121	* is hung up	127	* is hung up
122	*/	128	*/
123	#define IPC_M_PHONE_HUNGUP 3	129	#define IPC_M_PHONE_HUNGUP 3
124		130
125	/** Send as_area over IPC	131	/** Send as_area over IPC
126	* - ARG1 - src base address	132	* - ARG1 - src base address
127	* - ARG2 - size of src as(filled automatically by kernel)	133	* - ARG2 - size of src as(filled automatically by kernel)
128	* - ARG3 - flags of the area being sent	134	* - ARG3 - flags of the area being sent
129	* - on answer ARG1 - dst base adress	135	* - on answer ARG1 - dst base adress
130	*/	136	*/
131	#define IPC_M_AS_AREA_SEND 5	137	#define IPC_M_AS_AREA_SEND 5
132		138
133	/** Get as_area over IPC	139	/** Get as_area over IPC
134	* - ARG1 - Where the area will be mapped	140	* - ARG1 - Where the area will be mapped
135	* - ARG2 - Expected size of area	141	* - ARG2 - Expected size of area
136	* - ARG3 - User defined argument	142	* - ARG3 - User defined argument
137	* on answer - the server sets ARG1 as src as address of the as_area	143	* on answer - the server sets ARG1 as src as address of the as_area
138	* to be shared, ARG2 is set to rights that will be used for sharing,	144	* to be shared, ARG2 is set to rights that will be used for sharing,
139	* which is returned as part of answer back to the receiver	145	* which is returned as part of answer back to the receiver
140	*/	146	*/
141	#define IPC_M_AS_AREA_RECV 6	147	#define IPC_M_AS_AREA_RECV 6
142		148
143		149
144	/* Well-known methods */	150	/* Well-known methods */
145	#define IPC_M_LAST_SYSTEM 511	151	#define IPC_M_LAST_SYSTEM 511
146	#define IPC_M_PING 512	152	#define IPC_M_PING 512
147	/* User methods */	153	/* User methods */
148	#define FIRST_USER_METHOD 1024	154	#define FIRST_USER_METHOD 1024
149		155
150	#ifdef KERNEL	156	#ifdef KERNEL
151		157
152	#include <synch/mutex.h>	158	#include <synch/mutex.h>
153	#include <synch/condvar.h>	159	#include <synch/condvar.h>
154	#include <adt/list.h>	160	#include <adt/list.h>
155		161
156	#define IPC_MAX_PHONES 16	162	#define IPC_MAX_PHONES 16
157		163
158	typedef struct answerbox_s answerbox_t;	164	typedef struct answerbox_s answerbox_t;
159	typedef struct phone_s phone_t;	165	typedef struct phone_s phone_t;
160	typedef struct {	166	typedef struct {
161	__native args[IPC_CALL_LEN];	167	__native args[IPC_CALL_LEN];
162	phone_t *phone;	168	phone_t *phone;
163	}ipc_data_t;	169	}ipc_data_t;
164		170
165	struct answerbox_s {	171	struct answerbox_s {
166	SPINLOCK_DECLARE(lock);	172	SPINLOCK_DECLARE(lock);
167		173
168	task_t *task;	174	task_t *task;
169		175
170	waitq_t wq;	176	waitq_t wq;
171		177
172	link_t connected_phones; /*< Phones connected to this answerbox /	178	link_t connected_phones; /*< Phones connected to this answerbox /
173	link_t calls; /*< Received calls /	179	link_t calls; /*< Received calls /
174	link_t dispatched_calls; /* Should be hash table in the future */	180	link_t dispatched_calls; /* Should be hash table in the future */
175		181
176	link_t answers; /*< Answered calls /	182	link_t answers; /*< Answered calls /
177		183
178	SPINLOCK_DECLARE(irq_lock);	184	SPINLOCK_DECLARE(irq_lock);
179	link_t irq_notifs; /*< Notifications from IRQ handlers /	185	link_t irq_notifs; /*< Notifications from IRQ handlers /
180	};	186	};
181		187
182	typedef enum {	188	typedef enum {
183	IPC_PHONE_FREE = 0, /*< Phone is free and can be allocated /	189	IPC_PHONE_FREE = 0, /*< Phone is free and can be allocated /
184	IPC_PHONE_CONNECTING, /*< Phone is connecting somewhere /	190	IPC_PHONE_CONNECTING, /*< Phone is connecting somewhere /
185	IPC_PHONE_CONNECTED, /*< Phone is connected /	191	IPC_PHONE_CONNECTED, /*< Phone is connected /
186	IPC_PHONE_HUNGUP, /*< Phone is hung up, waiting for answers to come /	192	IPC_PHONE_HUNGUP, /*< Phone is hung up, waiting for answers to come /
187	IPC_PHONE_SLAMMED /*< Phone was hungup from server /	193	IPC_PHONE_SLAMMED /*< Phone was hungup from server /
188	} ipc_phone_state_t;	194	} ipc_phone_state_t;
189		195
190	/** Structure identifying phone (in TASK structure) */	196	/** Structure identifying phone (in TASK structure) */
191	struct phone_s {	197	struct phone_s {
192	SPINLOCK_DECLARE(lock);	198	SPINLOCK_DECLARE(lock);
193	link_t link;	199	link_t link;
194	answerbox_t *callee;	200	answerbox_t *callee;
195	ipc_phone_state_t state;	201	ipc_phone_state_t state;
196	atomic_t active_calls;	202	atomic_t active_calls;
197	};	203	};
198		204
199	typedef struct {	205	typedef struct {
200	link_t link;	206	link_t link;
201		207
202	int flags;	208	int flags;
203		209
204	/* Identification of the caller */	210	/* Identification of the caller */
205	task_t *sender;	211	task_t *sender;
206	/* The caller box is different from sender->answerbox	212	/* The caller box is different from sender->answerbox
207	* for synchronous calls	213	* for synchronous calls
208	*/	214	*/
209	answerbox_t *callerbox;	215	answerbox_t *callerbox;
210		216
211	__native private; /*< Private data to internal IPC /	217	__native private; /*< Private data to internal IPC /
212		218
213	ipc_data_t data; /*< Data passed from/to userspace /	219	ipc_data_t data; /*< Data passed from/to userspace /
214	}call_t;	220	}call_t;
215		221
216	extern void ipc_init(void);	222	extern void ipc_init(void);
217	extern call_t * ipc_wait_for_call(answerbox_t *box, __u32 usec, int flags);	223	extern call_t * ipc_wait_for_call(answerbox_t *box, __u32 usec, int flags);
218	extern void ipc_answer(answerbox_t box, call_t request);	224	extern void ipc_answer(answerbox_t box, call_t request);
219	extern int ipc_call(phone_t phone, call_t call);	225	extern int ipc_call(phone_t phone, call_t call);
220	extern void ipc_call_sync(phone_t phone, call_t request);	226	extern void ipc_call_sync(phone_t phone, call_t request);
221	extern void ipc_phone_init(phone_t *phone);	227	extern void ipc_phone_init(phone_t *phone);
222	extern void ipc_phone_connect(phone_t phone, answerbox_t box);	228	extern void ipc_phone_connect(phone_t phone, answerbox_t box);
223	extern void ipc_call_free(call_t *call);	229	extern void ipc_call_free(call_t *call);
224	extern call_t * ipc_call_alloc(int flags);	230	extern call_t * ipc_call_alloc(int flags);
225	extern void ipc_answerbox_init(answerbox_t *box);	231	extern void ipc_answerbox_init(answerbox_t *box);
226	extern void ipc_call_static_init(call_t *call);	232	extern void ipc_call_static_init(call_t *call);
227	extern void task_print_list(void);	233	extern void task_print_list(void);
228	extern int ipc_forward(call_t call, phone_t newphone, answerbox_t *oldbox);	234	extern int ipc_forward(call_t call, phone_t newphone, answerbox_t *oldbox);
229	void ipc_cleanup(void);	235	void ipc_cleanup(void);
230	int ipc_phone_hangup(phone_t *phone);	236	int ipc_phone_hangup(phone_t *phone);
231	extern void ipc_backsend_err(phone_t phone, call_t call, __native err);	237	extern void ipc_backsend_err(phone_t phone, call_t call, __native err);
232	extern void ipc_print_task(task_id_t taskid);	238	extern void ipc_print_task(task_id_t taskid);
233		239
234	extern answerbox_t *ipc_phone_0;	240	extern answerbox_t *ipc_phone_0;
235		241
236	#endif	242	#endif
237		243
238	#endif	244	#endif
-		245
-		246	/** @}
-		247	*/
-		248
239		249