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 {
    unative_t 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;
 
    unative_t 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, uint32_t 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, unative_t 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 1702 → 1780

Rev 1702		Rev 1780
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	29	/** @addtogroup genericipc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef __IPC_H__	35	#ifndef __IPC_H__
36	#define __IPC_H__	36	#define __IPC_H__
37		37
38	/* Length of data being transfered with IPC call */	38	/* Length of data being transfered with IPC call */
39	/* - the uspace may not be able to utilize full length */	39	/* - the uspace may not be able to utilize full length */
40	#define IPC_CALL_LEN 4	40	#define IPC_CALL_LEN 4
41		41
42	/** Maximum active async calls per thread */	42	/** Maximum active async calls per thread */
43	#ifdef CONFIG_DEBUG	43	#ifdef CONFIG_DEBUG
44	# define IPC_MAX_ASYNC_CALLS 4	44	# define IPC_MAX_ASYNC_CALLS 4
45	#else	45	#else
46	# define IPC_MAX_ASYNC_CALLS 4000	46	# define IPC_MAX_ASYNC_CALLS 4000
47	#endif	47	#endif
48		48
49	/* Flags for calls */	49	/* Flags for calls */
50	#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 /
51	#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 /
52	#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
53	* userspace, will be discarded */	53	* userspace, will be discarded */
54	#define IPC_CALL_FORWARDED (1<<3) /* Call was forwarded */	54	#define IPC_CALL_FORWARDED (1<<3) /* Call was forwarded */
55	#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 */
56	#define IPC_CALL_NOTIF (1<<5) /* Interrupt notification */	56	#define IPC_CALL_NOTIF (1<<5) /* Interrupt notification */
57		57
58	/* Flags of callid (the addresses are aligned at least to 4,	58	/* Flags of callid (the addresses are aligned at least to 4,
59	* 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
60	*/	60	*/
61	#define IPC_CALLID_ANSWERED 1 /*< Type of this msg is 'answer' /	61	#define IPC_CALLID_ANSWERED 1 /*< Type of this msg is 'answer' /
62	#define IPC_CALLID_NOTIFICATION 2 /*< Type of this msg is 'notification' /	62	#define IPC_CALLID_NOTIFICATION 2 /*< Type of this msg is 'notification' /
63		63
64	/* Return values from IPC_ASYNC */	64	/* Return values from IPC_ASYNC */
65	#define IPC_CALLRET_FATAL -1	65	#define IPC_CALLRET_FATAL -1
66	#define IPC_CALLRET_TEMPORARY -2	66	#define IPC_CALLRET_TEMPORARY -2
67		67
68		68
69	/* Macros for manipulating calling data */	69	/* Macros for manipulating calling data */
70	#define IPC_SET_RETVAL(data, retval) ((data).args[0] = (retval))	70	#define IPC_SET_RETVAL(data, retval) ((data).args[0] = (retval))
71	#define IPC_SET_METHOD(data, val) ((data).args[0] = (val))	71	#define IPC_SET_METHOD(data, val) ((data).args[0] = (val))
72	#define IPC_SET_ARG1(data, val) ((data).args[1] = (val))	72	#define IPC_SET_ARG1(data, val) ((data).args[1] = (val))
73	#define IPC_SET_ARG2(data, val) ((data).args[2] = (val))	73	#define IPC_SET_ARG2(data, val) ((data).args[2] = (val))
74	#define IPC_SET_ARG3(data, val) ((data).args[3] = (val))	74	#define IPC_SET_ARG3(data, val) ((data).args[3] = (val))
75		75
76	#define IPC_GET_METHOD(data) ((data).args[0])	76	#define IPC_GET_METHOD(data) ((data).args[0])
77	#define IPC_GET_RETVAL(data) ((data).args[0])	77	#define IPC_GET_RETVAL(data) ((data).args[0])
78		78
79	#define IPC_GET_ARG1(data) ((data).args[1])	79	#define IPC_GET_ARG1(data) ((data).args[1])
80	#define IPC_GET_ARG2(data) ((data).args[2])	80	#define IPC_GET_ARG2(data) ((data).args[2])
81	#define IPC_GET_ARG3(data) ((data).args[3])	81	#define IPC_GET_ARG3(data) ((data).args[3])
82		82
83	/* Well known phone descriptors */	83	/* Well known phone descriptors */
84	#define PHONE_NS 0	84	#define PHONE_NS 0
85		85
86	/* System-specific methods - only through special syscalls	86	/* System-specific methods - only through special syscalls
87	* These methods have special behaviour	87	* These methods have special behaviour
88	*/	88	*/
89	/** Protocol for CONNECT - TO - ME	89	/** Protocol for CONNECT - TO - ME
90	*	90	*
91	* Calling process asks the callee to create a callback connection,	91	* Calling process asks the callee to create a callback connection,
92	* so that it can start initiating new messages.	92	* so that it can start initiating new messages.
93	*	93	*
94	* The protocol for negotiating is:	94	* The protocol for negotiating is:
95	* - sys_connect_to_me - sends a message IPC_M_CONNECTTOME	95	* - sys_connect_to_me - sends a message IPC_M_CONNECTTOME
96	* - sys_wait_for_call - upon receipt tries to allocate new phone	96	* - sys_wait_for_call - upon receipt tries to allocate new phone
97	* - if it fails, responds with ELIMIT	97	* - if it fails, responds with ELIMIT
98	* - passes call to userspace. If userspace	98	* - passes call to userspace. If userspace
99	* responds with error, phone is deallocated and	99	* responds with error, phone is deallocated and
100	* error is sent back to caller. Otherwise	100	* error is sent back to caller. Otherwise
101	* the call is accepted and the response is sent back.	101	* the call is accepted and the response is sent back.
102	* - the allocated phoneid is passed to userspace	102	* - the allocated phoneid is passed to userspace
103	* (on the receiving sid) as ARG3 of the call.	103	* (on the receiving sid) as ARG3 of the call.
104	* - the caller obtains taskid of the called thread	104	* - the caller obtains taskid of the called thread
105	*/	105	*/
106	#define IPC_M_CONNECT_TO_ME 1	106	#define IPC_M_CONNECT_TO_ME 1
107	/** Protocol for CONNECT - ME - TO	107	/** Protocol for CONNECT - ME - TO
108	*	108	*
109	* 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.
110	* 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.
111	*	111	*
112	* The protocol for negotiating is:	112	* The protocol for negotiating is:
113	* - sys_connect_me_to - send a synchronous message to name server	113	* - sys_connect_me_to - send a synchronous message to name server
114	* indicating that it wants to be connected to some	114	* indicating that it wants to be connected to some
115	* service	115	* service
116	* - arg1/2 are user specified, arg3 contains	116	* - arg1/2 are user specified, arg3 contains
117	* address of the phone that should be connected	117	* address of the phone that should be connected
118	* (TODO: it leaks to userspace)	118	* (TODO: it leaks to userspace)
119	* recipient - if ipc_answer == 0, then accept connection	119	* recipient - if ipc_answer == 0, then accept connection
120	* - otherwise connection refused	120	* - otherwise connection refused
121	* - recepient may forward message. Forwarding	121	* - recepient may forward message. Forwarding
122	* system message	122	* system message
123	*	123	*
124	*/	124	*/
125	#define IPC_M_CONNECT_ME_TO 2	125	#define IPC_M_CONNECT_ME_TO 2
126	/** This message is sent to answerbox when the phone	126	/** This message is sent to answerbox when the phone
127	* is hung up	127	* is hung up
128	*/	128	*/
129	#define IPC_M_PHONE_HUNGUP 3	129	#define IPC_M_PHONE_HUNGUP 3
130		130
131	/** Send as_area over IPC	131	/** Send as_area over IPC
132	* - ARG1 - src base address	132	* - ARG1 - src base address
133	* - ARG2 - size of src as(filled automatically by kernel)	133	* - ARG2 - size of src as(filled automatically by kernel)
134	* - ARG3 - flags of the area being sent	134	* - ARG3 - flags of the area being sent
135	* - on answer ARG1 - dst base adress	135	* - on answer ARG1 - dst base adress
136	*/	136	*/
137	#define IPC_M_AS_AREA_SEND 5	137	#define IPC_M_AS_AREA_SEND 5
138		138
139	/** Get as_area over IPC	139	/** Get as_area over IPC
140	* - ARG1 - Where the area will be mapped	140	* - ARG1 - Where the area will be mapped
141	* - ARG2 - Expected size of area	141	* - ARG2 - Expected size of area
142	* - ARG3 - User defined argument	142	* - ARG3 - User defined argument
143	* 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
144	* 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,
145	* which is returned as part of answer back to the receiver	145	* which is returned as part of answer back to the receiver
146	*/	146	*/
147	#define IPC_M_AS_AREA_RECV 6	147	#define IPC_M_AS_AREA_RECV 6
148		148
149		149
150	/* Well-known methods */	150	/* Well-known methods */
151	#define IPC_M_LAST_SYSTEM 511	151	#define IPC_M_LAST_SYSTEM 511
152	#define IPC_M_PING 512	152	#define IPC_M_PING 512
153	/* User methods */	153	/* User methods */
154	#define FIRST_USER_METHOD 1024	154	#define FIRST_USER_METHOD 1024
155		155
156	#ifdef KERNEL	156	#ifdef KERNEL
157		157
158	#include <synch/mutex.h>	158	#include <synch/mutex.h>
159	#include <synch/condvar.h>	159	#include <synch/condvar.h>
160	#include <adt/list.h>	160	#include <adt/list.h>
161		161
162	#define IPC_MAX_PHONES 16	162	#define IPC_MAX_PHONES 16
163		163
164	typedef struct answerbox_s answerbox_t;	164	typedef struct answerbox_s answerbox_t;
165	typedef struct phone_s phone_t;	165	typedef struct phone_s phone_t;
166	typedef struct {	166	typedef struct {
167	__native args[IPC_CALL_LEN];	167	unative_t args[IPC_CALL_LEN];
168	phone_t *phone;	168	phone_t *phone;
169	}ipc_data_t;	169	}ipc_data_t;
170		170
171	struct answerbox_s {	171	struct answerbox_s {
172	SPINLOCK_DECLARE(lock);	172	SPINLOCK_DECLARE(lock);
173		173
174	task_t *task;	174	task_t *task;
175		175
176	waitq_t wq;	176	waitq_t wq;
177		177
178	link_t connected_phones; /*< Phones connected to this answerbox /	178	link_t connected_phones; /*< Phones connected to this answerbox /
179	link_t calls; /*< Received calls /	179	link_t calls; /*< Received calls /
180	link_t dispatched_calls; /* Should be hash table in the future */	180	link_t dispatched_calls; /* Should be hash table in the future */
181		181
182	link_t answers; /*< Answered calls /	182	link_t answers; /*< Answered calls /
183		183
184	SPINLOCK_DECLARE(irq_lock);	184	SPINLOCK_DECLARE(irq_lock);
185	link_t irq_notifs; /*< Notifications from IRQ handlers /	185	link_t irq_notifs; /*< Notifications from IRQ handlers /
186	};	186	};
187		187
188	typedef enum {	188	typedef enum {
189	IPC_PHONE_FREE = 0, /*< Phone is free and can be allocated /	189	IPC_PHONE_FREE = 0, /*< Phone is free and can be allocated /
190	IPC_PHONE_CONNECTING, /*< Phone is connecting somewhere /	190	IPC_PHONE_CONNECTING, /*< Phone is connecting somewhere /
191	IPC_PHONE_CONNECTED, /*< Phone is connected /	191	IPC_PHONE_CONNECTED, /*< Phone is connected /
192	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 /
193	IPC_PHONE_SLAMMED /*< Phone was hungup from server /	193	IPC_PHONE_SLAMMED /*< Phone was hungup from server /
194	} ipc_phone_state_t;	194	} ipc_phone_state_t;
195		195
196	/** Structure identifying phone (in TASK structure) */	196	/** Structure identifying phone (in TASK structure) */
197	struct phone_s {	197	struct phone_s {
198	SPINLOCK_DECLARE(lock);	198	SPINLOCK_DECLARE(lock);
199	link_t link;	199	link_t link;
200	answerbox_t *callee;	200	answerbox_t *callee;
201	ipc_phone_state_t state;	201	ipc_phone_state_t state;
202	atomic_t active_calls;	202	atomic_t active_calls;
203	};	203	};
204		204
205	typedef struct {	205	typedef struct {
206	link_t link;	206	link_t link;
207		207
208	int flags;	208	int flags;
209		209
210	/* Identification of the caller */	210	/* Identification of the caller */
211	task_t *sender;	211	task_t *sender;
212	/* The caller box is different from sender->answerbox	212	/* The caller box is different from sender->answerbox
213	* for synchronous calls	213	* for synchronous calls
214	*/	214	*/
215	answerbox_t *callerbox;	215	answerbox_t *callerbox;
216		216
217	__native private; /*< Private data to internal IPC /	217	unative_t private; /*< Private data to internal IPC /
218		218
219	ipc_data_t data; /*< Data passed from/to userspace /	219	ipc_data_t data; /*< Data passed from/to userspace /
220	}call_t;	220	}call_t;
221		221
222	extern void ipc_init(void);	222	extern void ipc_init(void);
223	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, uint32_t usec, int flags);
224	extern void ipc_answer(answerbox_t box, call_t request);	224	extern void ipc_answer(answerbox_t box, call_t request);
225	extern int ipc_call(phone_t phone, call_t call);	225	extern int ipc_call(phone_t phone, call_t call);
226	extern void ipc_call_sync(phone_t phone, call_t request);	226	extern void ipc_call_sync(phone_t phone, call_t request);
227	extern void ipc_phone_init(phone_t *phone);	227	extern void ipc_phone_init(phone_t *phone);
228	extern void ipc_phone_connect(phone_t phone, answerbox_t box);	228	extern void ipc_phone_connect(phone_t phone, answerbox_t box);
229	extern void ipc_call_free(call_t *call);	229	extern void ipc_call_free(call_t *call);
230	extern call_t * ipc_call_alloc(int flags);	230	extern call_t * ipc_call_alloc(int flags);
231	extern void ipc_answerbox_init(answerbox_t *box);	231	extern void ipc_answerbox_init(answerbox_t *box);
232	extern void ipc_call_static_init(call_t *call);	232	extern void ipc_call_static_init(call_t *call);
233	extern void task_print_list(void);	233	extern void task_print_list(void);
234	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);
235	void ipc_cleanup(void);	235	void ipc_cleanup(void);
236	int ipc_phone_hangup(phone_t *phone);	236	int ipc_phone_hangup(phone_t *phone);
237	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, unative_t err);
238	extern void ipc_print_task(task_id_t taskid);	238	extern void ipc_print_task(task_id_t taskid);
239		239
240	extern answerbox_t *ipc_phone_0;	240	extern answerbox_t *ipc_phone_0;
241		241
242	#endif	242	#endif
243		243
244	#endif	244	#endif
245		245
246	/** @}	246	/** @}
247	*/	247	*/
248		248
249		249