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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 <mm/as.h> |
|
31 | #include <print.h> |
32 | #include <print.h> |
32 | #include <putchar.h> |
33 | #include <putchar.h> |
33 | #include <ipc/ipc.h> |
34 | #include <ipc/ipc.h> |
34 | #include <errno.h> |
35 | #include <errno.h> |
35 | #include <proc/task.h> |
36 | #include <proc/task.h> |
36 | #include <arch.h> |
37 | #include <arch.h> |
37 | #include <debug.h> |
38 | #include <debug.h> |
38 | 39 | ||
39 | static __native sys_ctl(void) { |
40 | static __native sys_ctl(void) { |
40 | printf("Thread finished\n"); |
41 | printf("Thread finished\n"); |
41 | thread_exit(); |
42 | thread_exit(); |
42 | /* Unreachable */ |
43 | /* Unreachable */ |
43 | return 0; |
44 | return 0; |
44 | } |
45 | } |
45 | 46 | ||
46 | static __native sys_io(int fd, const void * buf, size_t count) { |
47 | static __native sys_io(int fd, const void * buf, size_t count) { |
47 | 48 | ||
48 | // TODO: buf sanity checks and a lot of other stuff ... |
49 | // TODO: buf sanity checks and a lot of other stuff ... |
49 | 50 | ||
50 | size_t i; |
51 | size_t i; |
51 | 52 | ||
52 | for (i = 0; i < count; i++) |
53 | for (i = 0; i < count; i++) |
53 | putchar(((char *) buf)[i]); |
54 | putchar(((char *) buf)[i]); |
54 | 55 | ||
55 | return count; |
56 | return count; |
56 | } |
57 | } |
57 | 58 | ||
58 | /** Send a call over IPC, wait for reply, return to user |
59 | /** Send a call over IPC, wait for reply, return to user |
59 | * |
60 | * |
60 | * @return Call identification, returns -1 on fatal error, |
61 | * @return Call identification, returns -1 on fatal error, |
61 | -2 on 'Too many async request, handle answers first |
62 | -2 on 'Too many async request, handle answers first |
62 | */ |
63 | */ |
63 | static __native sys_ipc_call_sync(__native phoneid, __native method, |
64 | static __native sys_ipc_call_sync(__native phoneid, __native method, |
64 | __native arg1, __native *data) |
65 | __native arg1, __native *data) |
65 | { |
66 | { |
66 | call_t call; |
67 | call_t call; |
67 | phone_t *phone; |
68 | phone_t *phone; |
68 | /* Special answerbox for synchronous messages */ |
69 | /* Special answerbox for synchronous messages */ |
69 | 70 | ||
70 | if (phoneid >= IPC_MAX_PHONES) |
71 | if (phoneid >= IPC_MAX_PHONES) |
71 | return IPC_CALLRET_FATAL; |
72 | return IPC_CALLRET_FATAL; |
72 | 73 | ||
73 | phone = &TASK->phones[phoneid]; |
74 | phone = &TASK->phones[phoneid]; |
74 | if (!phone->callee) |
75 | if (!phone->callee) |
75 | return IPC_CALLRET_FATAL; |
76 | return IPC_CALLRET_FATAL; |
76 | 77 | ||
77 | ipc_call_init(&call); |
78 | ipc_call_init(&call); |
78 | IPC_SET_METHOD(call.data, method); |
79 | IPC_SET_METHOD(call.data, method); |
79 | IPC_SET_ARG1(call.data, arg1); |
80 | IPC_SET_ARG1(call.data, arg1); |
80 | 81 | ||
81 | ipc_call_sync(phone, &call); |
82 | ipc_call_sync(phone, &call); |
82 | 83 | ||
83 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
84 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
84 | 85 | ||
85 | return 0; |
86 | return 0; |
86 | } |
87 | } |
87 | 88 | ||
88 | static __native sys_ipc_call_sync_medium(__native phoneid, __native *data) |
89 | static __native sys_ipc_call_sync_medium(__native phoneid, __native *data) |
89 | { |
90 | { |
90 | call_t call; |
91 | call_t call; |
91 | phone_t *phone; |
92 | phone_t *phone; |
92 | /* Special answerbox for synchronous messages */ |
93 | /* Special answerbox for synchronous messages */ |
93 | 94 | ||
94 | if (phoneid >= IPC_MAX_PHONES) |
95 | if (phoneid >= IPC_MAX_PHONES) |
95 | return IPC_CALLRET_FATAL; |
96 | return IPC_CALLRET_FATAL; |
96 | 97 | ||
97 | phone = &TASK->phones[phoneid]; |
98 | phone = &TASK->phones[phoneid]; |
98 | if (!phone->callee) |
99 | if (!phone->callee) |
99 | return IPC_CALLRET_FATAL; |
100 | return IPC_CALLRET_FATAL; |
100 | 101 | ||
101 | ipc_call_init(&call); |
102 | ipc_call_init(&call); |
102 | copy_from_uspace(&call.data, data, sizeof(call.data)); |
103 | copy_from_uspace(&call.data, data, sizeof(call.data)); |
103 | 104 | ||
104 | ipc_call_sync(phone, &call); |
105 | ipc_call_sync(phone, &call); |
105 | 106 | ||
106 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
107 | copy_to_uspace(data, &call.data, sizeof(call.data)); |
107 | 108 | ||
108 | return 0; |
109 | return 0; |
109 | } |
110 | } |
110 | 111 | ||
111 | 112 | ||
112 | /** Send an asynchronous call over ipc |
113 | /** Send an asynchronous call over ipc |
113 | * |
114 | * |
114 | * @return Call identification, returns -1 on fatal error, |
115 | * @return Call identification, returns -1 on fatal error, |
115 | -2 on 'Too many async request, handle answers first |
116 | -2 on 'Too many async request, handle answers first |
116 | */ |
117 | */ |
117 | static __native sys_ipc_call_async(__native phoneid, __native method, |
118 | static __native sys_ipc_call_async(__native phoneid, __native method, |
118 | __native arg1, __native arg2) |
119 | __native arg1, __native arg2) |
119 | { |
120 | { |
120 | call_t *call; |
121 | call_t *call; |
121 | phone_t *phone; |
122 | phone_t *phone; |
122 | 123 | ||
123 | if (phoneid >= IPC_MAX_PHONES) |
124 | if (phoneid >= IPC_MAX_PHONES) |
124 | return IPC_CALLRET_FATAL; |
125 | return IPC_CALLRET_FATAL; |
125 | 126 | ||
126 | phone = &TASK->phones[phoneid]; |
127 | phone = &TASK->phones[phoneid]; |
127 | if (!phone->callee) |
128 | if (!phone->callee) |
128 | return IPC_CALLRET_FATAL; |
129 | return IPC_CALLRET_FATAL; |
129 | 130 | ||
130 | /* TODO: Check that we did not exceed system imposed maximum |
131 | /* TODO: Check that we did not exceed system imposed maximum |
131 | * of asynchrnously sent messages |
132 | * of asynchrnously sent messages |
132 | * - the userspace should be able to handle it correctly |
133 | * - the userspace should be able to handle it correctly |
133 | */ |
134 | */ |
134 | call = ipc_call_alloc(); |
135 | call = ipc_call_alloc(); |
135 | IPC_SET_METHOD(call->data, method); |
136 | IPC_SET_METHOD(call->data, method); |
136 | IPC_SET_ARG1(call->data, arg1); |
137 | IPC_SET_ARG1(call->data, arg1); |
137 | IPC_SET_ARG2(call->data, arg2); |
138 | IPC_SET_ARG2(call->data, arg2); |
138 | 139 | ||
139 | ipc_call(phone, call); |
140 | ipc_call(phone, call); |
140 | 141 | ||
141 | return (__native) call; |
142 | return (__native) call; |
142 | } |
143 | } |
143 | 144 | ||
144 | /** Send IPC answer */ |
145 | /** Send IPC answer */ |
145 | static __native sys_ipc_answer(__native callid, __native retval, __native arg1, |
146 | static __native sys_ipc_answer(__native callid, __native retval, __native arg1, |
146 | __native arg2) |
147 | __native arg2) |
147 | { |
148 | { |
148 | call_t *call; |
149 | call_t *call; |
149 | 150 | ||
150 | /* Check that the user is not sending us answer callid */ |
151 | /* Check that the user is not sending us answer callid */ |
151 | ASSERT(! (callid & 1)); |
152 | ASSERT(! (callid & 1)); |
152 | /* TODO: Check that the callid is in the dispatch table */ |
153 | /* TODO: Check that the callid is in the dispatch table */ |
153 | call = (call_t *) callid; |
154 | call = (call_t *) callid; |
154 | 155 | ||
155 | IPC_SET_RETVAL(call->data, retval); |
156 | IPC_SET_RETVAL(call->data, retval); |
156 | IPC_SET_ARG1(call->data, arg1); |
157 | IPC_SET_ARG1(call->data, arg1); |
157 | IPC_SET_ARG2(call->data, arg2); |
158 | IPC_SET_ARG2(call->data, arg2); |
158 | 159 | ||
159 | ipc_answer(&TASK->answerbox, call); |
160 | ipc_answer(&TASK->answerbox, call); |
160 | return 0; |
161 | return 0; |
161 | } |
162 | } |
162 | 163 | ||
163 | /** Wait for incoming ipc call or answer |
164 | /** Wait for incoming ipc call or answer |
164 | * |
165 | * |
165 | * @param result |
166 | * @param result |
166 | * @param flags |
167 | * @param flags |
167 | * @return Callid, if callid & 1, then the call is answer |
168 | * @return Callid, if callid & 1, then the call is answer |
168 | */ |
169 | */ |
169 | static __native sys_ipc_wait_for_call(__native *calldata, __native flags) |
170 | static __native sys_ipc_wait_for_call(__native *calldata, __native flags) |
170 | { |
171 | { |
171 | call_t *call; |
172 | call_t *call; |
172 | 173 | ||
173 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
174 | call = ipc_wait_for_call(&TASK->answerbox, flags); |
174 | 175 | ||
175 | copy_to_uspace(calldata, &call->data, sizeof(call->data)); |
176 | copy_to_uspace(calldata, &call->data, sizeof(call->data)); |
176 | if (call->flags & IPC_CALL_ANSWERED) { |
177 | if (call->flags & IPC_CALL_ANSWERED) { |
177 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
178 | ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC)); |
178 | ipc_call_free(call); |
179 | ipc_call_free(call); |
179 | return ((__native)call) | IPC_CALLID_ANSWERED; |
180 | return ((__native)call) | IPC_CALLID_ANSWERED; |
180 | } |
181 | } |
181 | return (__native)call; |
182 | return (__native)call; |
182 | } |
183 | } |
183 | 184 | ||
- | 185 | static __native sys_mremap(void *address, size_t size, unsigned long flags) |
|
- | 186 | { |
|
- | 187 | return as_remap(AS, (__address) address, size, 0); |
|
- | 188 | } |
|
184 | 189 | ||
185 | syshandler_t syscall_table[SYSCALL_END] = { |
190 | syshandler_t syscall_table[SYSCALL_END] = { |
186 | sys_ctl, |
191 | sys_ctl, |
187 | sys_io, |
192 | sys_io, |
- | 193 | sys_mremap, |
|
188 | sys_ipc_call_sync, |
194 | sys_ipc_call_sync, |
189 | sys_ipc_call_sync_medium, |
195 | sys_ipc_call_sync_medium, |
190 | sys_ipc_call_async, |
196 | sys_ipc_call_async, |
191 | sys_ipc_answer, |
197 | sys_ipc_answer, |
192 | sys_ipc_wait_for_call |
198 | sys_ipc_wait_for_call |
193 | }; |
199 | }; |
194 | 200 |