scsi/arm/msgqueue.c

17  * Function: struct msgqueue_entry *mqe_alloc(MsgQueue_t *msgq)
19  * Params  : msgq - message queue to claim entry for
22 static struct msgqueue_entry *mqe_alloc(MsgQueue_t *msgq)
26 	if ((mq = msgq->free) != NULL)
27 		msgq->free = mq->next;
33  * Function: void mqe_free(MsgQueue_t *msgq, struct msgqueue_entry *mq)
35  * Params  : msgq - message queue to free entry from
38 static void mqe_free(MsgQueue_t *msgq, struct msgqueue_entry *mq)
41 		mq->next = msgq->free;
42 		msgq->free = mq;
47  * Function: void msgqueue_initialise(MsgQueue_t *msgq)
49  * Params  : msgq - queue to initialise
51 void msgqueue_initialise(MsgQueue_t *msgq)
55 	msgq->qe = NULL;
56 	msgq->free = &msgq->entries[0];
59 		msgq->entries[i].next = &msgq->entries[i + 1];
61 	msgq->entries[NR_MESSAGES - 1].next = NULL;
66  * Function: void msgqueue_free(MsgQueue_t *msgq)
68  * Params  : msgq - queue to free
70 void msgqueue_free(MsgQueue_t *msgq)
75  * Function: int msgqueue_msglength(MsgQueue_t *msgq)
77  * Params  : msgq - queue to examine
80 int msgqueue_msglength(MsgQueue_t *msgq)
82 	struct msgqueue_entry *mq = msgq->qe;
85 	for (mq = msgq->qe; mq; mq = mq->next)
92  * Function: struct message *msgqueue_getmsg(MsgQueue_t *msgq, int msgno)
94  * Params  : msgq   - queue to obtain message from
98 struct message *msgqueue_getmsg(MsgQueue_t *msgq, int msgno)
102 	for (mq = msgq->qe; mq && msgno; mq = mq->next, msgno--);
108  * Function: int msgqueue_addmsg(MsgQueue_t *msgq, int length, ...)
110  * Params  : msgq   - queue to add message on
115 int msgqueue_addmsg(MsgQueue_t *msgq, int length, ...)
117 	struct msgqueue_entry *mq = mqe_alloc(msgq);
133 		mqp = &msgq->qe;
144  * Function: void msgqueue_flush(MsgQueue_t *msgq)
146  * Params  : msgq - queue to flush
148 void msgqueue_flush(MsgQueue_t *msgq)
152 	for (mq = msgq->qe; mq; mq = mqnext) {
154 		mqe_free(msgq, mq);
156 	msgq->qe = NULL;