Subversion Repositories HelenOS

Rev

Rev 959 | Rev 998 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 959 Rev 965
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
#ifndef __IPC_H__
29
#ifndef __IPC_H__
30
#define __IPC_H__
30
#define __IPC_H__
31
 
31
 
-
 
32
/* Length of data being transfered with IPC call */
-
 
33
/* - the uspace may not be able to utilize full length */
32
#define IPC_CALL_LEN    2
34
#define IPC_CALL_LEN    4
33
 
35
 
34
/* Flags for calls */
36
/* Flags for calls */
35
#define IPC_CALL_ANSWERED    1
37
#define IPC_CALL_ANSWERED      1 /**< This is answer to a call */
-
 
38
#define IPC_CALL_STATIC_ALLOC  2 /**< This call will not be freed on error */
-
 
39
 
36
/* Flags for ipc_wait_for_call */
40
/* Flags for ipc_wait_for_call */
37
#define IPC_WAIT_NONBLOCKING 1
41
#define IPC_WAIT_NONBLOCKING   1
-
 
42
 
-
 
43
/* Flags of callid */
-
 
44
#define IPC_CALLID_ANSWERED  1
-
 
45
 
-
 
46
/* Return values from IPC_ASYNC */
-
 
47
#define IPC_CALLRET_FATAL         -1
-
 
48
#define IPC_CALLRET_TEMPORARY     -2
-
 
49
 
-
 
50
 
-
 
51
/* Macros for manipulating calling data */
-
 
52
#define IPC_SET_RETVAL(data, retval)   ((data)[0] = (retval))
-
 
53
#define IPC_SET_METHOD(data, val)   ((data)[0] = (val))
-
 
54
#define IPC_SET_ARG1(data, val)   ((data)[1] = (val))
-
 
55
#define IPC_SET_ARG2(data, val)   ((data)[2] = (val))
-
 
56
#define IPC_SET_ARG3(data, val)   ((data)[3] = (val))
-
 
57
 
-
 
58
#define IPC_GET_METHOD(data)           ((data)[0])
-
 
59
#define IPC_GET_RETVAL(data)           ((data)[0])
-
 
60
 
-
 
61
#define IPC_GET_ARG1(data)              ((data)[1])
-
 
62
#define IPC_GET_ARG2(data)              ((data)[2])
-
 
63
#define IPC_GET_ARG3(data)              ((data)[3])
-
 
64
 
-
 
65
/* Well known phone descriptors */
-
 
66
#define PHONE_NS              0
38
 
67
 
39
#ifdef KERNEL
68
#ifdef KERNEL
40
 
69
 
41
#include <synch/waitq.h>
70
#include <synch/mutex.h>
42
#include <synch/spinlock.h>
71
#include <synch/condvar.h>
43
#include <adt/list.h>
72
#include <adt/list.h>
44
 
73
 
45
#define IPC_MAX_PHONES  16
74
#define IPC_MAX_PHONES  16
46
 
75
 
47
 
76
 
48
typedef struct answerbox answerbox_t;
77
typedef struct answerbox answerbox_t;
49
 
78
 
50
typedef struct {
79
typedef struct {
51
    link_t list;
80
    link_t list;
52
    answerbox_t *callerbox;
81
    answerbox_t *callerbox;
53
    int flags;
82
    int flags;
54
    __native data[IPC_CALL_LEN];
83
    __native data[IPC_CALL_LEN];
55
} call_t;
84
} call_t;
56
 
85
 
57
struct answerbox {
86
struct answerbox {
58
    SPINLOCK_DECLARE(lock);
87
    SPINLOCK_DECLARE(lock);
59
 
88
 
-
 
89
    mutex_t mutex;
60
    waitq_t wq;
90
    condvar_t cv;
61
 
91
 
62
    link_t connected_phones; /**< Phones connected to this answerbox */
92
    link_t connected_phones; /**< Phones connected to this answerbox */
63
    link_t calls;            /**< Received calls */
93
    link_t calls;            /**< Received calls */
64
    link_t dispatched_calls; /* Should be hash table in the future */
94
    link_t dispatched_calls; /* Should be hash table in the future */
65
 
95
 
66
    link_t answers;          /**< Answered calls */
96
    link_t answers;          /**< Answered calls */
67
};
97
};
68
 
98
 
69
typedef struct {
99
typedef struct {
70
    SPINLOCK_DECLARE(lock);
100
    SPINLOCK_DECLARE(lock);
71
    link_t list;
101
    link_t list;
72
    answerbox_t *callee;
102
    answerbox_t *callee;
73
} phone_t;
103
} phone_t;
74
 
104
 
75
extern void ipc_create_phonecompany(void);
-
 
76
extern void ipc_init(void);
105
extern void ipc_init(void);
77
extern call_t * ipc_wait_for_call(answerbox_t *box, int flags);
106
extern call_t * ipc_wait_for_call(answerbox_t *box, int flags);
78
extern void ipc_answer(answerbox_t *box, call_t *request);
107
extern void ipc_answer(answerbox_t *box, call_t *request);
79
extern void ipc_call(phone_t *phone, call_t *request);
108
extern void ipc_call(phone_t *phone, call_t *request);
80
extern void ipc_call_sync(phone_t *phone, call_t *request);
109
extern void ipc_call_sync(phone_t *phone, call_t *request);
81
extern void ipc_phone_destroy(phone_t *phone);
110
extern void ipc_phone_destroy(phone_t *phone);
82
extern void ipc_phone_init(phone_t *phone, answerbox_t *box);
111
extern void ipc_phone_init(phone_t *phone, answerbox_t *box);
83
extern void ipc_call_free(call_t *call);
112
extern void ipc_call_free(call_t *call);
84
extern call_t * ipc_call_alloc(void);
113
extern call_t * ipc_call_alloc(void);
85
void ipc_answerbox_init(answerbox_t *box);
114
extern void ipc_answerbox_init(answerbox_t *box);
86
void ipc_phone_init(phone_t *phone, answerbox_t *box);
115
extern void ipc_phone_init(phone_t *phone, answerbox_t *box);
-
 
116
extern void ipc_call_init(call_t *call);
87
 
117
 
88
extern answerbox_t *ipc_central_box;
118
extern answerbox_t *ipc_phone_0;
89
 
119
 
90
#endif
120
#endif
91
 
121
 
92
#endif
122
#endif
93
 
123