dev/smartpqi/smartpqi_tag.c

34  * Function used to release the tag from taglist.
36 void pqisrc_put_tag(pqi_taglist_t *taglist, uint32_t elem)
39 	OS_ACQUIRE_SPINLOCK(&(taglist->lock));
42 	ASSERT(taglist->num_elem < taglist->max_elem);
44 	if (taglist->num_elem < taglist->max_elem) {
45 		taglist->elem_array[taglist->tail] = elem;
46 		taglist->num_elem++;
47 		taglist->tail = (taglist->tail + 1) % taglist->max_elem;
50 	OS_RELEASE_SPINLOCK(&taglist->lock);
58 uint32_t pqisrc_get_tag(pqi_taglist_t *taglist)
64 	OS_ACQUIRE_SPINLOCK(&taglist->lock);
66 	ASSERT(taglist->num_elem > 0);
68 	if (taglist->num_elem > 0) {
69 		elem = taglist->elem_array[taglist->head];
70 		taglist->num_elem--;
71 		taglist->head = (taglist->head + 1) % taglist->max_elem;
74 	OS_RELEASE_SPINLOCK(&taglist->lock);
83 int pqisrc_init_taglist(pqisrc_softstate_t *softs, pqi_taglist_t *taglist,
91 	taglist->max_elem = max_elem;
92 	taglist->num_elem = 0;
93 	taglist->head = 0;
94 	taglist->tail = 0;
95 	taglist->elem_array = os_mem_alloc(softs,
97 	if (!(taglist->elem_array)) {
98 		DBG_FUNC("Unable to allocate memory for taglist\n");
103     	os_strlcpy(taglist->lockname, "tag_lock",  LOCKNAME_SIZE);
104     	ret = os_init_spinlock(softs, &taglist->lock, taglist->lockname);
107         	taglist->lockcreated=false;
110     	taglist->lockcreated = true;
115 		pqisrc_put_tag(taglist, i);
122     os_mem_free(softs, (char *)taglist->elem_array,
123         (taglist->max_elem * sizeof(uint32_t)));
124 	taglist->elem_array = NULL;
133 void pqisrc_destroy_taglist(pqisrc_softstate_t *softs, pqi_taglist_t *taglist)
136 	os_mem_free(softs, (char *)taglist->elem_array,
137 		(taglist->max_elem * sizeof(uint32_t)));
138 	taglist->elem_array = NULL;
140     	if(taglist->lockcreated==true){
141         	os_uninit_spinlock(&taglist->lock);
142         	taglist->lockcreated = false;
206  * Function used to release the tag from taglist.