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35 | #ifndef KERN_IPC_H_ |
35 | #ifndef KERN_IPC_H_ |
36 | #define KERN_IPC_H_ |
36 | #define KERN_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 | 50 | ||
51 | /** This is answer to a call */ |
51 | /** This is answer to a call */ |
Line 59... | Line 59... | ||
59 | /** Identify connect_me_to answer */ |
59 | /** Identify connect_me_to answer */ |
60 | #define IPC_CALL_CONN_ME_TO (1 << 4) |
60 | #define IPC_CALL_CONN_ME_TO (1 << 4) |
61 | /** Interrupt notification */ |
61 | /** Interrupt notification */ |
62 | #define IPC_CALL_NOTIF (1 << 5) |
62 | #define IPC_CALL_NOTIF (1 << 5) |
63 | 63 | ||
- | 64 | /* |
|
- | 65 | * Bits used in call hashes. |
|
64 | /* Flags of callid (the addresses are aligned at least to 4, |
66 | * The addresses are aligned at least to 4 that is why we can use the 2 least |
65 | * that is why we can use bottom 2 bits of the call address |
67 | * significant bits of the call address. |
66 | */ |
68 | */ |
67 | /** Type of this msg is 'answer' */ |
69 | /** Type of this call is 'answer' */ |
68 | #define IPC_CALLID_ANSWERED 1 |
70 | #define IPC_CALLID_ANSWERED 1 |
69 | /** Type of this msg is 'notification' */ |
71 | /** Type of this call is 'notification' */ |
70 | #define IPC_CALLID_NOTIFICATION 2 |
72 | #define IPC_CALLID_NOTIFICATION 2 |
71 | 73 | ||
72 | /* Return values from IPC_ASYNC */ |
74 | /* Return values from sys_ipc_call_async(). */ |
73 | #define IPC_CALLRET_FATAL -1 |
75 | #define IPC_CALLRET_FATAL -1 |
74 | #define IPC_CALLRET_TEMPORARY -2 |
76 | #define IPC_CALLRET_TEMPORARY -2 |
75 | 77 | ||
76 | 78 | ||
77 | /* Macros for manipulating calling data */ |
79 | /* Macros for manipulating calling data */ |
Line 109... | Line 111... | ||
109 | * the call is accepted and the response is sent back. |
111 | * the call is accepted and the response is sent back. |
110 | * - the allocated phoneid is passed to userspace |
112 | * - the allocated phoneid is passed to userspace |
111 | * (on the receiving sid) as ARG3 of the call. |
113 | * (on the receiving sid) as ARG3 of the call. |
112 | * - the caller obtains taskid of the called thread |
114 | * - the caller obtains taskid of the called thread |
113 | */ |
115 | */ |
114 | #define IPC_M_CONNECT_TO_ME 1 |
116 | #define IPC_M_CONNECT_TO_ME 1 |
115 | /** Protocol for CONNECT - ME - TO |
117 | /** Protocol for CONNECT - ME - TO |
116 | * |
118 | * |
117 | * Calling process asks the callee to create for him a new connection. |
119 | * Calling process asks the callee to create for him a new connection. |
118 | * E.g. the caller wants a name server to connect him to print server. |
120 | * E.g. the caller wants a name server to connect him to print server. |
119 | * |
121 | * |
Line 128... | Line 130... | ||
128 | * - otherwise connection refused |
130 | * - otherwise connection refused |
129 | * - recepient may forward message. Forwarding |
131 | * - recepient may forward message. Forwarding |
130 | * system message |
132 | * system message |
131 | * |
133 | * |
132 | */ |
134 | */ |
133 | #define IPC_M_CONNECT_ME_TO 2 |
135 | #define IPC_M_CONNECT_ME_TO 2 |
134 | /** This message is sent to answerbox when the phone |
136 | /** This message is sent to answerbox when the phone |
135 | * is hung up |
137 | * is hung up |
136 | */ |
138 | */ |
137 | #define IPC_M_PHONE_HUNGUP 3 |
139 | #define IPC_M_PHONE_HUNGUP 3 |
138 | 140 | ||
139 | /** Send as_area over IPC |
141 | /** Send as_area over IPC |
140 | * - ARG1 - src as_area base address |
142 | * - ARG1 - src as_area base address |
141 | * - ARG2 - size of src as_area (filled automatically by kernel) |
143 | * - ARG2 - size of src as_area (filled automatically by kernel) |
142 | * - ARG3 - flags of the as_area being sent |
144 | * - ARG3 - flags of the as_area being sent |
143 | * |
145 | * |
144 | * on answer: |
146 | * on answer: |
145 | * - ARG1 - dst as_area base adress |
147 | * - ARG1 - dst as_area base adress |
146 | */ |
148 | */ |
147 | #define IPC_M_AS_AREA_SEND 5 |
149 | #define IPC_M_AS_AREA_SEND 5 |
148 | 150 | ||
149 | /** Get as_area over IPC |
151 | /** Get as_area over IPC |
150 | * - ARG1 - dst as_area base address |
152 | * - ARG1 - dst as_area base address |
151 | * - ARG2 - dst as_area size |
153 | * - ARG2 - dst as_area size |
152 | * - ARG3 - user defined argument |
154 | * - ARG3 - user defined argument |
Line 154... | Line 156... | ||
154 | * on answer, the server must set: |
156 | * on answer, the server must set: |
155 | * |
157 | * |
156 | * - ARG1 - src as_area base address |
158 | * - ARG1 - src as_area base address |
157 | * - ARG2 - flags that will be used for sharing |
159 | * - ARG2 - flags that will be used for sharing |
158 | */ |
160 | */ |
159 | #define IPC_M_AS_AREA_RECV 6 |
161 | #define IPC_M_AS_AREA_RECV 6 |
160 | 162 | ||
161 | 163 | ||
162 | /* Well-known methods */ |
164 | /* Well-known methods */ |
163 | #define IPC_M_LAST_SYSTEM 511 |
165 | #define IPC_M_LAST_SYSTEM 511 |
164 | #define IPC_M_PING 512 |
166 | #define IPC_M_PING 512 |
165 | /* User methods */ |
167 | /* User methods */ |
166 | #define FIRST_USER_METHOD 1024 |
168 | #define FIRST_USER_METHOD 1024 |
167 | 169 | ||
168 | #ifdef KERNEL |
170 | #ifdef KERNEL |
169 | 171 | ||
170 | #define IPC_MAX_PHONES 16 |
172 | #define IPC_MAX_PHONES 16 |
171 | 173 | ||
Line 201... | Line 203... | ||
201 | 203 | ||
202 | struct task *task; |
204 | struct task *task; |
203 | 205 | ||
204 | waitq_t wq; |
206 | waitq_t wq; |
205 | 207 | ||
206 | /** Phones connected to this answerbox */ |
208 | /** Phones connected to this answerbox. */ |
207 | link_t connected_phones; |
209 | link_t connected_phones; |
208 | /** Received calls */ |
210 | /** Received calls. */ |
209 | link_t calls; |
211 | link_t calls; |
210 | link_t dispatched_calls; /* Should be hash table in the future */ |
212 | link_t dispatched_calls; /* Should be hash table in the future */ |
211 | 213 | ||
212 | /** Answered calls */ |
214 | /** Answered calls. */ |
213 | link_t answers; |
215 | link_t answers; |
214 | 216 | ||
215 | SPINLOCK_DECLARE(irq_lock); |
217 | SPINLOCK_DECLARE(irq_lock); |
216 | /** Notifications from IRQ handlers */ |
218 | /** Notifications from IRQ handlers. */ |
217 | link_t irq_notifs; |
219 | link_t irq_notifs; |
218 | /** IRQs with notifications to this answerbox. */ |
220 | /** IRQs with notifications to this answerbox. */ |
219 | link_t irq_head; |
221 | link_t irq_head; |
220 | } answerbox_t; |
222 | } answerbox_t; |
221 | 223 | ||
Line 227... | Line 229... | ||
227 | typedef struct { |
229 | typedef struct { |
228 | link_t link; |
230 | link_t link; |
229 | 231 | ||
230 | int flags; |
232 | int flags; |
231 | 233 | ||
232 | /* Identification of the caller */ |
234 | /** Identification of the caller. */ |
233 | struct task *sender; |
235 | struct task *sender; |
234 | /* The caller box is different from sender->answerbox |
236 | /** The caller box is different from sender->answerbox for synchronous |
235 | * for synchronous calls |
237 | * calls. */ |
236 | */ |
- | |
237 | answerbox_t *callerbox; |
238 | answerbox_t *callerbox; |
238 | 239 | ||
239 | /** Private data to internal IPC */ |
240 | /** Private data to internal IPC. */ |
240 | unative_t priv; |
241 | unative_t priv; |
241 | 242 | ||
242 | /** Data passed from/to userspace */ |
243 | /** Data passed from/to userspace. */ |
243 | ipc_data_t data; |
244 | ipc_data_t data; |
244 | } call_t; |
245 | } call_t; |
245 | 246 | ||
246 | extern void ipc_init(void); |
247 | extern void ipc_init(void); |
247 | extern call_t * ipc_wait_for_call(answerbox_t *box, uint32_t usec, int flags); |
248 | extern call_t * ipc_wait_for_call(answerbox_t *box, uint32_t usec, int flags); |