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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
2 | * Copyright (C) 2005 Martin Decky |
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 | #include <syscall/syscall.h> |
29 | #include <syscall/syscall.h> |
30 | #include <proc/thread.h> |
30 | #include <proc/thread.h> |
31 | #include <print.h> |
31 | #include <print.h> |
32 | #include <putchar.h> |
32 | #include <putchar.h> |
33 | #include <ipc/ipc.h> |
33 | #include <ipc/ipc.h> |
34 | #include <errno.h> |
34 | #include <errno.h> |
35 | #include <proc/task.h> |
35 | #include <proc/task.h> |
36 | #include <arch.h> |
36 | #include <arch.h> |
37 | #include <debug.h> |
37 | #include <debug.h> |
38 | 38 | ||
39 | static __native sys_ctl(void) { |
39 | static __native sys_ctl(void) { |
40 | printf("Thread finished\n"); |
40 | printf("Thread finished\n"); |
41 | thread_exit(); |
41 | thread_exit(); |
42 | /* Unreachable */ |
42 | /* Unreachable */ |
43 | return 0; |
43 | return 0; |
44 | } |
44 | } |
45 | 45 | ||
46 | static __native sys_io(int fd, const void * buf, size_t count) { |
46 | static __native sys_io(int fd, const void * buf, size_t count) { |
47 | 47 | ||
48 | // TODO: buf sanity checks and a lot of other stuff ... |
48 | // TODO: buf sanity checks and a lot of other stuff ... |
49 | 49 | ||
50 | size_t i; |
50 | size_t i; |
51 | 51 | ||
52 | for (i = 0; i < count; i++) |
52 | for (i = 0; i < count; i++) |
53 | putchar(((char *) buf)[i]); |
53 | putchar(((char *) buf)[i]); |
54 | 54 | ||
55 | return count; |
55 | return count; |
56 | } |
56 | } |
57 | 57 | ||
58 | /** Send a call over IPC, wait for reply, return to user |
58 | /** Send a call over IPC, wait for reply, return to user |
59 | * |
59 | * |
60 | * @return Call identification, returns -1 on fatal error, |
60 | * @return Call identification, returns -1 on fatal error, |
61 | -2 on 'Too many async request, handle answers first |
61 | -2 on 'Too many async request, handle answers first |
62 | */ |
62 | */ |
63 | static __native sys_ipc_call_sync(__native phoneid, __native arg1, |
63 | static __native sys_ipc_call_sync(__native phoneid, __native method, |
64 | __native arg2, __native *respdata) |
64 | __native arg1, __native *data) |
65 | { |
65 | { |
66 | call_t *call; |
66 | call_t call; |
67 | phone_t *phone; |
67 | phone_t *phone; |
68 | /* Special answerbox for synchronous messages */ |
68 | /* Special answerbox for synchronous messages */ |
69 | 69 | ||
70 | if (phoneid >= IPC_MAX_PHONES) |
70 | if (phoneid >= IPC_MAX_PHONES) |
71 | return -ENOENT; |
71 | return IPC_CALLRET_FATAL; |
72 | 72 | ||
73 | phone = &TASK->phones[phoneid]; |
73 | phone = &TASK->phones[phoneid]; |
74 | if (!phone->callee) |
74 | if (!phone->callee) |
75 | return -ENOENT; |
75 | return IPC_CALLRET_FATAL; |
76 | 76 | ||
77 | call = ipc_call_alloc(); |
77 | ipc_call_init(&call); |
78 | call->data[0] = arg1; |
78 | IPC_SET_METHOD(call.data, method); |
79 | call->data[1] = arg2; |
79 | IPC_SET_ARG1(call.data, arg1); |
80 | 80 | ||
81 | ipc_call_sync(phone, call); |
81 | ipc_call_sync(phone, &call); |
82 | 82 | ||
83 | copy_to_uspace(respdata, &call->data, sizeof(__native) * IPC_CALL_LEN); |
83 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
84 | 84 | ||
85 | return 0; |
85 | return 0; |
86 | } |
86 | } |
87 | 87 | ||
- | 88 | static __native sys_ipc_call_sync_medium(__native phoneid, __native *data) |
|
- | 89 | { |
|
- | 90 | call_t call; |
|
- | 91 | phone_t *phone; |
|
- | 92 | /* Special answerbox for synchronous messages */ |
|
- | 93 | ||
- | 94 | if (phoneid >= IPC_MAX_PHONES) |
|
- | 95 | return IPC_CALLRET_FATAL; |
|
- | 96 | ||
- | 97 | phone = &TASK->phones[phoneid]; |
|
- | 98 | if (!phone->callee) |
|
- | 99 | return IPC_CALLRET_FATAL; |
|
- | 100 | ||
- | 101 | ipc_call_init(&call); |
|
- | 102 | copy_from_uspace(&call.data, data, sizeof(call.data)); |
|
- | 103 | ||
- | 104 | ipc_call_sync(phone, &call); |
|
- | 105 | ||
- | 106 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
|
- | 107 | ||
- | 108 | return 0; |
|
- | 109 | } |
|
- | 110 | ||
- | 111 | ||
88 | /** Send an asynchronous call over ipc |
112 | /** Send an asynchronous call over ipc |
89 | * |
113 | * |
90 | * @return Call identification, returns -1 on fatal error, |
114 | * @return Call identification, returns -1 on fatal error, |
91 | -2 on 'Too many async request, handle answers first |
115 | -2 on 'Too many async request, handle answers first |
92 | */ |
116 | */ |
93 | static __native sys_ipc_call_async(__native phoneid, __native arg1, |
117 | static __native sys_ipc_call_async(__native phoneid, __native method, |
94 | __native arg2) |
118 | __native arg1, __native arg2) |
95 | { |
119 | { |
96 | call_t *call; |
120 | call_t *call; |
97 | phone_t *phone; |
121 | phone_t *phone; |
98 | 122 | ||
99 | if (phoneid >= IPC_MAX_PHONES) |
123 | if (phoneid >= IPC_MAX_PHONES) |
100 | return -ENOENT; |
124 | return IPC_CALLRET_FATAL; |
101 | 125 | ||
102 | phone = &TASK->phones[phoneid]; |
126 | phone = &TASK->phones[phoneid]; |
103 | if (!phone->callee) |
127 | if (!phone->callee) |
104 | return -ENOENT; |
128 | return IPC_CALLRET_FATAL; |
105 | - | ||
106 | 129 | ||
107 | /* TODO: Check that we did not exceed system imposed maximum |
130 | /* TODO: Check that we did not exceed system imposed maximum |
108 | * of asynchrnously sent messages |
131 | * of asynchrnously sent messages |
109 | * - the userspace should be able to handle it correctly |
132 | * - the userspace should be able to handle it correctly |
110 | */ |
133 | */ |
111 | call = ipc_call_alloc(); |
134 | call = ipc_call_alloc(); |
- | 135 | IPC_SET_METHOD(call->data, method); |
|
112 | call->data[0] = arg1; |
136 | IPC_SET_ARG1(call->data, arg1); |
113 | call->data[1] = arg2; |
137 | IPC_SET_ARG2(call->data, arg2); |
- | 138 | ||
114 | ipc_call(phone, call); |
139 | ipc_call(phone, call); |
115 | 140 | ||
116 | return (__native) call; |
141 | return (__native) call; |
117 | } |
142 | } |
118 | 143 | ||
119 | /** Send IPC answer */ |
144 | /** Send IPC answer */ |
120 | static __native sys_ipc_answer(__native callid, __native arg1, __native arg2) |
145 | static __native sys_ipc_answer(__native callid, __native retval, __native arg1, |
- | 146 | __native arg2) |
|
121 | { |
147 | { |
122 | call_t *call; |
148 | call_t *call; |
123 | 149 | ||
124 | /* Check that the user is not sending us answer callid */ |
150 | /* Check that the user is not sending us answer callid */ |
125 | ASSERT(! (callid & 1)); |
151 | ASSERT(! (callid & 1)); |
126 | /* TODO: Check that the callid is in the dispatch table */ |
152 | /* TODO: Check that the callid is in the dispatch table */ |
127 | call = (call_t *) callid; |
153 | call = (call_t *) callid; |
128 | 154 | ||
- | 155 | IPC_SET_RETVAL(call->data, retval); |
|
129 | call->data[0] = arg1; |
156 | IPC_SET_ARG1(call->data, arg1); |
130 | call->data[1] = arg2; |
157 | IPC_SET_ARG2(call->data, arg2); |
131 | 158 | ||
132 | ipc_answer(&TASK->answerbox, call); |
159 | ipc_answer(&TASK->answerbox, call); |
133 | return 0; |
160 | return 0; |
134 | } |
161 | } |
135 | 162 | ||
136 | /** Wait for incoming ipc call or answer |
163 | /** Wait for incoming ipc call or answer |
137 | * |
164 | * |
138 | * @param result |
165 | * @param result |
139 | * @param flags |
166 | * @param flags |
140 | * @return Callid, if callid & 1, then the call is answer |
167 | * @return Callid, if callid & 1, then the call is answer |
141 | */ |
168 | */ |
142 | static __native sys_ipc_wait_for_call(__native *calldata, __native flags) |
169 | static __native sys_ipc_wait_for_call(__native *calldata, __native flags) |
143 | { |
170 | { |
144 | call_t *call; |
171 | call_t *call; |
145 | 172 | ||
146 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
173 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
147 | copy_to_uspace(calldata, &call->data, sizeof(__native) * IPC_CALL_LEN); |
- | |
148 | 174 | ||
- | 175 | copy_to_uspace(calldata, &call->data, sizeof(call->data)); |
|
149 | if (call->flags & IPC_CALL_ANSWERED) |
176 | if (call->flags & IPC_CALL_ANSWERED) { |
- | 177 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
|
- | 178 | ipc_call_free(call); |
|
150 | return ((__native)call) | 1; |
179 | return ((__native)call) | IPC_CALLID_ANSWERED; |
- | 180 | } |
|
151 | return (__native)call; |
181 | return (__native)call; |
152 | } |
182 | } |
153 | 183 | ||
154 | 184 | ||
155 | syshandler_t syscall_table[SYSCALL_END] = { |
185 | syshandler_t syscall_table[SYSCALL_END] = { |
156 | sys_ctl, |
186 | sys_ctl, |
157 | sys_io, |
187 | sys_io, |
158 | sys_ipc_call_sync, |
188 | sys_ipc_call_sync, |
- | 189 | sys_ipc_call_sync_medium, |
|
159 | sys_ipc_call_async, |
190 | sys_ipc_call_async, |
160 | sys_ipc_answer, |
191 | sys_ipc_answer, |
161 | sys_ipc_wait_for_call |
192 | sys_ipc_wait_for_call |
162 | }; |
193 | }; |
163 | 194 |