BT_CONTROL_ACTION_ITEM *FCore_GetControlAction(BT_FILTER_CORE_INFO *pCore,
ATHBT_STATE_INDICATION Indication,
ATHBT_STATE State,
BT_CONTROL_ACTION_ITEM *pStart)
{
DL_LIST *pListHead;
BT_CONTROL_ACTION_ITEM *pBtControlAction = NULL;
if (State >= STATE_MAX) {
return NULL;
}
pListHead = &pCore->ActionListsState[Indication][State];
if (NULL == pStart) {
/* caller wants the first item in the list */
if (pListHead->pNext == pListHead) {
/* list is empty */
return NULL;
}
pBtControlAction = A_CONTAINING_STRUCT(pListHead->pNext, BT_CONTROL_ACTION_ITEM, ListEntry);
} else {
/* caller wants the next list item */
if (pStart->ListEntry.pNext == pListHead) {
/* reached the end */
return NULL;
}
pBtControlAction = A_CONTAINING_STRUCT(pStart->ListEntry.pNext, BT_CONTROL_ACTION_ITEM, ListEntry);
}
return pBtControlAction;
}
static HIF_SCATTER_REQ *DevAllocScatterReq(HIF_DEVICE *Context)
{
DL_LIST *pItem;
AR6K_DEVICE *pDev = (AR6K_DEVICE *)Context;
LOCK_AR6K(pDev);
pItem = DL_ListRemoveItemFromHead(&pDev->ScatterReqHead);
UNLOCK_AR6K(pDev);
if (pItem != NULL) {
return A_CONTAINING_STRUCT(pItem, HIF_SCATTER_REQ, ListLink);
}
return NULL;
}
static HIF_URB_CONTEXT *usb_hif_dequeue_pending_transfer(HIF_USB_PIPE *pipe)
{
HIF_URB_CONTEXT *urb_context = NULL;
DL_LIST *item;
unsigned long flags;
spin_lock_irqsave(&pipe->device->cs_lock, flags);
item = DL_ListRemoveItemFromHead(&pipe->urb_pending_list);
if (item != NULL)
urb_context = A_CONTAINING_STRUCT(item, HIF_URB_CONTEXT, link);
spin_unlock_irqrestore(&pipe->device->cs_lock, flags);
return urb_context;
}
static void CleanListItems(DL_LIST *pListHead)
{
DL_LIST *pListItem;
BT_CONTROL_ACTION_ITEM *pControlItem;
while (1) {
pListItem = DL_ListRemoveItemFromHead(pListHead);
if (NULL == pListItem) {
break;
}
pControlItem = A_CONTAINING_STRUCT(pListItem, BT_CONTROL_ACTION_ITEM, ListEntry);
/* free it */
A_FREE(pControlItem);
}
}
static HIF_SCATTER_REQ *AllocScatterReq(HIF_DEVICE *device)
{
DL_LIST *pItem;
CriticalSectionAcquire(&lock);
pItem = DL_ListRemoveItemFromHead(&device->ScatterReqHead);
CriticalSectionRelease(&lock);
if (pItem != NULL) {
return A_CONTAINING_STRUCT(pItem, HIF_SCATTER_REQ, ListLink);
}
return NULL;
}
HIF_URB_CONTEXT *usb_hif_alloc_urb_from_pipe(HIF_USB_PIPE *pipe)
{
HIF_URB_CONTEXT *urb_context = NULL;
DL_LIST *item;
unsigned long flags;
spin_lock_irqsave(&pipe->device->cs_lock, flags);
item = DL_ListRemoveItemFromHead(&pipe->urb_list_head);
if (item != NULL) {
urb_context = A_CONTAINING_STRUCT(item, HIF_URB_CONTEXT, link);
pipe->urb_cnt--;
}
spin_unlock_irqrestore(&pipe->device->cs_lock, flags);
return urb_context;
}
static HIF_SCATTER_REQ *AllocScatterReq(HIF_DEVICE *device)
{
DL_LIST *pItem;
unsigned long flag;
spin_lock_irqsave(&device->lock, flag);
pItem = DL_ListRemoveItemFromHead(&device->ScatterReqHead);
spin_unlock_irqrestore(&device->lock, flag);
if (pItem != NULL) {
return A_CONTAINING_STRUCT(pItem, HIF_SCATTER_REQ, ListLink);
}
return NULL;
}
