WebSVN – HelenOS – Diff – /trunk/kernel/generic/src/ipc/sysipc.c



 * - some system messages may be forwarded, for some of them
 *   it is useless
 */
static inline int is_forwardable(unative_t method)
{
    if (method == IPC_M_PHONE_HUNGUP || method == IPC_M_AS_AREA_SEND ||
        method == IPC_M_AS_AREA_RECV)
        return 0; /* This message is meant only for the receiver */
    return 1;
}
 
/****************************************************/

            phone_dealloc(phoneid);
        } else {
            /* The connection was accepted */
            phone_connect(phoneid, &answer->sender->answerbox);
            /* Set 'phone identification' as arg3 of response */
            IPC_SET_ARG3(answer->data,
                (unative_t) &TASK->phones[phoneid]);
        }
    } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {
        /* If the users accepted call, connect */
        if (!IPC_GET_RETVAL(answer->data)) {
            ipc_phone_connect((phone_t *) IPC_GET_ARG3(*olddata),
                &TASK->answerbox);
        }
    } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) {
        if (!IPC_GET_RETVAL(answer->data)) {
            /* Accepted, handle as_area receipt */
            ipl_t ipl;
            int rc;
            as_t *as;
           
            ipl = interrupts_disable();
            spinlock_lock(&answer->sender->lock);
            as = answer->sender->as;
            spinlock_unlock(&answer->sender->lock);
            interrupts_restore(ipl);
           
            rc = as_area_share(as, IPC_GET_ARG1(*olddata),
                IPC_GET_ARG2(*olddata), AS,
                IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata));
            IPC_SET_RETVAL(answer->data, rc);
            return rc;
        }
    } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) {
        if (!IPC_GET_RETVAL(answer->data)) {

            spinlock_lock(&answer->sender->lock);
            as = answer->sender->as;
            spinlock_unlock(&answer->sender->lock);
            interrupts_restore(ipl);
           
            rc = as_area_share(AS, IPC_GET_ARG1(answer->data),
                IPC_GET_ARG2(*olddata), as, IPC_GET_ARG1(*olddata),
                IPC_GET_ARG2(answer->data));
            IPC_SET_RETVAL(answer->data, rc);
        }
    }
    return 0;
}

 */
 
/** Do basic kernel processing of received call answer */
static void process_answer(call_t *call)
{
    if (IPC_GET_RETVAL(call->data) == EHANGUP &&
        (call->flags & IPC_CALL_FORWARDED))
        IPC_SET_RETVAL(call->data, EFORWARD);
 
    if (call->flags & IPC_CALL_CONN_ME_TO) {
        if (IPC_GET_RETVAL(call->data))
            phone_dealloc(call->priv);

    phone_t *phone;
    int res;
    int rc;
 
    ipc_call_static_init(&call);
    rc = copy_from_uspace(&call.data.args, &question->args,
        sizeof(call.data.args));
    if (rc != 0)
        return (unative_t) rc;
 
    GET_CHECK_PHONE(phone, phoneid, return ENOENT);
 

        return IPC_CALLRET_TEMPORARY;
 
    GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
 
    call = ipc_call_alloc(0);
    rc = copy_from_uspace(&call->data.args, &data->args,
        sizeof(call->data.args));
    if (rc != 0) {
        ipc_call_free(call);
        return (unative_t) rc;
    }
    if (!(res = request_preprocess(call)))

    return 0;
}
 
/** Wait for incoming ipc call or answer
 *
 * @param calldata  Pointer to buffer where the call/answer data is stored.
 * @param usec      Timeout. See waitq_sleep_timeout() for explanation.
 * @param flags     Select mode of sleep operation. See waitq_sleep_timeout()
 *          for explanation.
 *
 * @return Callid, if callid & 1, then the call is answer
 */
unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags)
{
    call_t *call;
 
restart:   
    call = ipc_wait_for_call(&TASK->answerbox, usec,
        flags | SYNCH_FLAGS_INTERRUPTIBLE);
    if (!call)
        return 0;
 
    if (call->flags & IPC_CALL_NOTIF) {
        ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));

 * @param method Method to be associated with the notification.
 * @param ucode Uspace pointer to the top-half pseudocode.
 *
 * @return EPERM or a return code returned by ipc_irq_register().
 */
unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method,
    irq_code_t *ucode)
{
    if (!(cap_get(TASK) & CAP_IRQ_REG))
        return EPERM;
 
    return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode);

Rev 2098	Rev 2359
Line 69...	Line 69...
69	* - some system messages may be forwarded, for some of them	69	* - some system messages may be forwarded, for some of them
70	* it is useless	70	* it is useless
71	*/	71	*/
72	static inline int is_forwardable(unative_t method)	72	static inline int is_forwardable(unative_t method)
73	{	73	{
74	if (method == IPC_M_PHONE_HUNGUP \|\| method == IPC_M_AS_AREA_SEND \	74	if (method == IPC_M_PHONE_HUNGUP \|\| method == IPC_M_AS_AREA_SEND \|\|
75	\|\| method == IPC_M_AS_AREA_RECV)	75	method == IPC_M_AS_AREA_RECV)
76	return 0; /* This message is meant only for the receiver */	76	return 0; /* This message is meant only for the receiver */
77	return 1;	77	return 1;
78	}	78	}
79		79
80	/****************************************************/	80	/****************************************************/
Line 130...	Line 130...
130	phone_dealloc(phoneid);	130	phone_dealloc(phoneid);
131	} else {	131	} else {
132	/* The connection was accepted */	132	/* The connection was accepted */
133	phone_connect(phoneid,&answer->sender->answerbox);	133	phone_connect(phoneid, &answer->sender->answerbox);
134	/* Set 'phone identification' as arg3 of response */	134	/* Set 'phone identification' as arg3 of response */
-		135	IPC_SET_ARG3(answer->data,
135	IPC_SET_ARG3(answer->data, (unative_t)&TASK->phones[phoneid]);	136	(unative_t) &TASK->phones[phoneid]);
136	}	137	}
137	} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {	138	} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {
138	/* If the users accepted call, connect */	139	/* If the users accepted call, connect */
139	if (!IPC_GET_RETVAL(answer->data)) {	140	if (!IPC_GET_RETVAL(answer->data)) {
140	ipc_phone_connect((phone_t )IPC_GET_ARG3(olddata),	141	ipc_phone_connect((phone_t ) IPC_GET_ARG3(olddata),
141	&TASK->answerbox);	142	&TASK->answerbox);
142	}	143	}
143	} else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) {	144	} else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_SEND) {
-		145	if (!IPC_GET_RETVAL(answer->data)) {
144	if (!IPC_GET_RETVAL(answer->data)) { /* Accepted, handle as_area receipt */	146	/* Accepted, handle as_area receipt */
145	ipl_t ipl;	147	ipl_t ipl;
146	int rc;	148	int rc;
147	as_t *as;	149	as_t *as;
148		150
149	ipl = interrupts_disable();	151	ipl = interrupts_disable();
150	spinlock_lock(&answer->sender->lock);	152	spinlock_lock(&answer->sender->lock);
151	as = answer->sender->as;	153	as = answer->sender->as;
152	spinlock_unlock(&answer->sender->lock);	154	spinlock_unlock(&answer->sender->lock);
153	interrupts_restore(ipl);	155	interrupts_restore(ipl);
154		156
155	rc = as_area_share(as, IPC_GET_ARG1(olddata), IPC_GET_ARG2(olddata),	157	rc = as_area_share(as, IPC_GET_ARG1(*olddata),
-		158	IPC_GET_ARG2(*olddata), AS,
156	AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata));	159	IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata));
157	IPC_SET_RETVAL(answer->data, rc);	160	IPC_SET_RETVAL(answer->data, rc);
158	return rc;	161	return rc;
159	}	162	}
160	} else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) {	163	} else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_AREA_RECV) {
161	if (!IPC_GET_RETVAL(answer->data)) {	164	if (!IPC_GET_RETVAL(answer->data)) {
Line 167...	Line 170...
167	spinlock_lock(&answer->sender->lock);	170	spinlock_lock(&answer->sender->lock);
168	as = answer->sender->as;	171	as = answer->sender->as;
169	spinlock_unlock(&answer->sender->lock);	172	spinlock_unlock(&answer->sender->lock);
170	interrupts_restore(ipl);	173	interrupts_restore(ipl);
171		174
172	rc = as_area_share(AS, IPC_GET_ARG1(answer->data), IPC_GET_ARG2(*olddata),	175	rc = as_area_share(AS, IPC_GET_ARG1(answer->data),
173	as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(answer->data));	176	IPC_GET_ARG2(olddata), as, IPC_GET_ARG1(olddata),
-		177	IPC_GET_ARG2(answer->data));
174	IPC_SET_RETVAL(answer->data, rc);	178	IPC_SET_RETVAL(answer->data, rc);
175	}	179	}
176	}	180	}
177	return 0;	181	return 0;
178	}	182	}
Line 215...	Line 219...
215	*/	219	*/
216		220
217	/** Do basic kernel processing of received call answer */	221	/** Do basic kernel processing of received call answer */
218	static void process_answer(call_t *call)	222	static void process_answer(call_t *call)
219	{	223	{
220	if (IPC_GET_RETVAL(call->data) == EHANGUP && \	224	if (IPC_GET_RETVAL(call->data) == EHANGUP &&
221	call->flags & IPC_CALL_FORWARDED)	225	(call->flags & IPC_CALL_FORWARDED))
222	IPC_SET_RETVAL(call->data, EFORWARD);	226	IPC_SET_RETVAL(call->data, EFORWARD);
223		227
224	if (call->flags & IPC_CALL_CONN_ME_TO) {	228	if (call->flags & IPC_CALL_CONN_ME_TO) {
225	if (IPC_GET_RETVAL(call->data))	229	if (IPC_GET_RETVAL(call->data))
226	phone_dealloc(call->priv);	230	phone_dealloc(call->priv);
Line 285...	Line 289...
285	phone_t *phone;	289	phone_t *phone;
286	int res;	290	int res;
287	int rc;	291	int rc;
288		292
289	ipc_call_static_init(&call);	293	ipc_call_static_init(&call);
290	rc = copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args));	294	rc = copy_from_uspace(&call.data.args, &question->args,
-		295	sizeof(call.data.args));
291	if (rc != 0)	296	if (rc != 0)
292	return (unative_t) rc;	297	return (unative_t) rc;
293		298
294	GET_CHECK_PHONE(phone, phoneid, return ENOENT);	299	GET_CHECK_PHONE(phone, phoneid, return ENOENT);
295		300
Line 365...	Line 370...
365	return IPC_CALLRET_TEMPORARY;	370	return IPC_CALLRET_TEMPORARY;
366		371
367	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);	372	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
368		373
369	call = ipc_call_alloc(0);	374	call = ipc_call_alloc(0);
370	rc = copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args));	375	rc = copy_from_uspace(&call->data.args, &data->args,
-		376	sizeof(call->data.args));
371	if (rc != 0) {	377	if (rc != 0) {
372	ipc_call_free(call);	378	ipc_call_free(call);
373	return (unative_t) rc;	379	return (unative_t) rc;
374	}	380	}
375	if (!(res=request_preprocess(call)))	381	if (!(res = request_preprocess(call)))
Line 506...	Line 512...
506	return 0;	512	return 0;
507	}	513	}
508		514
509	/** Wait for incoming ipc call or answer	515	/** Wait for incoming ipc call or answer
510	*	516	*
511	* @param calldata Pointer to buffer where the call/answer data is stored	517	* @param calldata Pointer to buffer where the call/answer data is stored.
512	* @param usec Timeout. See waitq_sleep_timeout() for explanation.	518	* @param usec Timeout. See waitq_sleep_timeout() for explanation.
513	* @param flags Select mode of sleep operation. See waitq_sleep_timeout() for explanation.	519	* @param flags Select mode of sleep operation. See waitq_sleep_timeout()
-		520	* for explanation.
514	*	521	*
515	* @return Callid, if callid & 1, then the call is answer	522	* @return Callid, if callid & 1, then the call is answer
516	*/	523	*/
517	unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags)	524	unative_t sys_ipc_wait_for_call(ipc_data_t *calldata, uint32_t usec, int flags)
518	{	525	{
519	call_t *call;	526	call_t *call;
520		527
521	restart:	528	restart:
522	call = ipc_wait_for_call(&TASK->answerbox, usec, flags \| SYNCH_FLAGS_INTERRUPTIBLE);	529	call = ipc_wait_for_call(&TASK->answerbox, usec,
-		530	flags \| SYNCH_FLAGS_INTERRUPTIBLE);
523	if (!call)	531	if (!call)
524	return 0;	532	return 0;
525		533
526	if (call->flags & IPC_CALL_NOTIF) {	534	if (call->flags & IPC_CALL_NOTIF) {
527	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));	535	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
Line 572...	Line 580...
572	* @param method Method to be associated with the notification.	580	* @param method Method to be associated with the notification.
573	* @param ucode Uspace pointer to the top-half pseudocode.	581	* @param ucode Uspace pointer to the top-half pseudocode.
574	*	582	*
575	* @return EPERM or a return code returned by ipc_irq_register().	583	* @return EPERM or a return code returned by ipc_irq_register().
576	*/	584	*/
577	unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method, irq_code_t *ucode)	585	unative_t sys_ipc_register_irq(inr_t inr, devno_t devno, unative_t method,
-		586	irq_code_t *ucode)
578	{	587	{
579	if (!(cap_get(TASK) & CAP_IRQ_REG))	588	if (!(cap_get(TASK) & CAP_IRQ_REG))
580	return EPERM;	589	return EPERM;
581		590
582	return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode);	591	return ipc_irq_register(&TASK->answerbox, inr, devno, method, ucode);

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/ipc/sysipc.c – Rev 2098 → 2359