Cross Reference: /drivers/scsi/arm/queue.c

Lines Matching refs:queue
2  *  linux/drivers/acorn/scsi/queue.c: queue handling primitives
49 #include "queue.h"
54  * Function: void queue_initialise (Queue_t *queue)
55  * Purpose : initialise a queue
56  * Params  : queue - queue to initialise
58 int queue_initialise (Queue_t *queue)
63 	spin_lock_init(&queue->queue_lock);
64 	INIT_LIST_HEAD(&queue->head);
65 	INIT_LIST_HEAD(&queue->free);
73 	queue->alloc = q = kmalloc(sizeof(QE_t) * nqueues, GFP_KERNEL);
78 			list_add(&q->list, &queue->free);
82 	return queue->alloc != NULL;
86  * Function: void queue_free (Queue_t *queue)
87  * Purpose : free a queue
88  * Params  : queue - queue to free
90 void queue_free (Queue_t *queue)
92 	if (!list_empty(&queue->head))
93 		printk(KERN_WARNING "freeing non-empty queue %p\n", queue);
94 	kfree(queue->alloc);
99  * Function: int __queue_add(Queue_t *queue, struct scsi_cmnd *SCpnt, int head)
100  * Purpose : Add a new command onto a queue, adding REQUEST_SENSE to head.
101  * Params  : queue - destination queue
103  *	     head  - add command to head of queue
106 int __queue_add(Queue_t *queue, struct scsi_cmnd *SCpnt, int head)
113 	spin_lock_irqsave(&queue->queue_lock, flags);
114 	if (list_empty(&queue->free))
117 	l = queue->free.next;
127 		list_add(l, &queue->head);
129 		list_add_tail(l, &queue->head);
133 	spin_unlock_irqrestore(&queue->queue_lock, flags);
137 static struct scsi_cmnd *__queue_remove(Queue_t *queue, struct list_head *ent)
149 	list_add(ent, &queue->free);
155  * Function: struct scsi_cmnd *queue_remove_exclude (queue, exclude)
156  * Purpose : remove a SCSI command from a queue
157  * Params  : queue   - queue to remove command from
161 struct scsi_cmnd *queue_remove_exclude(Queue_t *queue, unsigned long *exclude)
167 	spin_lock_irqsave(&queue->queue_lock, flags);
168 	list_for_each(l, &queue->head) {
171 			SCpnt = __queue_remove(queue, l);
175 	spin_unlock_irqrestore(&queue->queue_lock, flags);
181  * Function: struct scsi_cmnd *queue_remove (queue)
182  * Purpose : removes first SCSI command from a queue
183  * Params  : queue   - queue to remove command from
186 struct scsi_cmnd *queue_remove(Queue_t *queue)
191 	spin_lock_irqsave(&queue->queue_lock, flags);
192 	if (!list_empty(&queue->head))
193 		SCpnt = __queue_remove(queue, queue->head.next);
194 	spin_unlock_irqrestore(&queue->queue_lock, flags);
200  * Function: struct scsi_cmnd *queue_remove_tgtluntag (queue, target, lun, tag)
201  * Purpose : remove a SCSI command from the queue for a specified target/lun/tag
202  * Params  : queue  - queue to remove command from
208 struct scsi_cmnd *queue_remove_tgtluntag(Queue_t *queue, int target, int lun,
215 	spin_lock_irqsave(&queue->queue_lock, flags);
216 	list_for_each(l, &queue->head) {
220 			SCpnt = __queue_remove(queue, l);
224 	spin_unlock_irqrestore(&queue->queue_lock, flags);
230  * Function: queue_remove_all_target(queue, target)
231  * Purpose : remove all SCSI commands from the queue for a specified target
232  * Params  : queue  - queue to remove command from
236 void queue_remove_all_target(Queue_t *queue, int target)
241 	spin_lock_irqsave(&queue->queue_lock, flags);
242 	list_for_each(l, &queue->head) {
245 			__queue_remove(queue, l);
247 	spin_unlock_irqrestore(&queue->queue_lock, flags);
251  * Function: int queue_probetgtlun (queue, target, lun)
252  * Purpose : check to see if we have a command in the queue for the specified
254  * Params  : queue  - queue to look in
259 int queue_probetgtlun (Queue_t *queue, int target, int lun)
265 	spin_lock_irqsave(&queue->queue_lock, flags);
266 	list_for_each(l, &queue->head) {
273 	spin_unlock_irqrestore(&queue->queue_lock, flags);
279  * Function: int queue_remove_cmd(Queue_t *queue, struct scsi_cmnd *SCpnt)
281  * Params  : queue - queue to look in
285 int queue_remove_cmd(Queue_t *queue, struct scsi_cmnd *SCpnt)
291 	spin_lock_irqsave(&queue->queue_lock, flags);
292 	list_for_each(l, &queue->head) {
295 			__queue_remove(queue, l);
300 	spin_unlock_irqrestore(&queue->queue_lock, flags);