1178 	if (iommu->qi) {  in free_iommu()
1179 		free_page((unsigned long)iommu->qi->desc);  in free_iommu()
1180 		kfree(iommu->qi->desc_status);  in free_iommu()
1181 		kfree(iommu->qi);  in free_iommu()
1194 static inline void reclaim_free_desc(struct q_inval *qi)  in reclaim_free_desc()  argument
1196 	while (qi->desc_status[qi->free_tail] == QI_DONE ||  in reclaim_free_desc()
1197 	       qi->desc_status[qi->free_tail] == QI_ABORT) {  in reclaim_free_desc()
1198 		qi->desc_status[qi->free_tail] = QI_FREE;  in reclaim_free_desc()
1199 		qi->free_tail = (qi->free_tail + 1) % QI_LENGTH;  in reclaim_free_desc()
1200 		qi->free_cnt++;  in reclaim_free_desc()
1208 	struct q_inval *qi = iommu->qi;  in qi_check_fault()  local
1211 	if (qi->desc_status[wait_index] == QI_ABORT)  in qi_check_fault()
1224 			struct qi_desc *desc = qi->desc + head;  in qi_check_fault()
1234 			memcpy(desc, qi->desc + (wait_index << shift),  in qi_check_fault()
1255 			if (qi->desc_status[head] == QI_IN_USE)  in qi_check_fault()
1256 				qi->desc_status[head] = QI_ABORT;  in qi_check_fault()
1260 		if (qi->desc_status[wait_index] == QI_ABORT)  in qi_check_fault()
1280 	struct q_inval *qi = iommu->qi;  in qi_submit_sync()  local
1287 	if (!qi)  in qi_submit_sync()
1293 	raw_spin_lock_irqsave(&qi->q_lock, flags);  in qi_submit_sync()
1299 	while (qi->free_cnt < count + 2) {  in qi_submit_sync()
1300 		raw_spin_unlock_irqrestore(&qi->q_lock, flags);  in qi_submit_sync()
1302 		raw_spin_lock_irqsave(&qi->q_lock, flags);  in qi_submit_sync()
1305 	index = qi->free_head;  in qi_submit_sync()
1311 		memcpy(qi->desc + offset, &desc[i], 1 << shift);  in qi_submit_sync()
1312 		qi->desc_status[(index + i) % QI_LENGTH] = QI_IN_USE;  in qi_submit_sync()
1314 	qi->desc_status[wait_index] = QI_IN_USE;  in qi_submit_sync()
1320 	wait_desc.qw1 = virt_to_phys(&qi->desc_status[wait_index]);  in qi_submit_sync()
1325 	memcpy(qi->desc + offset, &wait_desc, 1 << shift);  in qi_submit_sync()
1327 	qi->free_head = (qi->free_head + count + 1) % QI_LENGTH;  in qi_submit_sync()
1328 	qi->free_cnt -= count + 1;  in qi_submit_sync()
1334 	writel(qi->free_head << shift, iommu->reg + DMAR_IQT_REG);  in qi_submit_sync()
1336 	while (qi->desc_status[wait_index] != QI_DONE) {  in qi_submit_sync()
1348 		raw_spin_unlock(&qi->q_lock);  in qi_submit_sync()
1350 		raw_spin_lock(&qi->q_lock);  in qi_submit_sync()
1354 		qi->desc_status[(index + i) % QI_LENGTH] = QI_DONE;  in qi_submit_sync()
1356 	reclaim_free_desc(qi);  in qi_submit_sync()
1357 	raw_spin_unlock_irqrestore(&qi->q_lock, flags);  in qi_submit_sync()
1578 	struct q_inval *qi = iommu->qi;  in __dmar_enable_qi()  local
1579 	u64 val = virt_to_phys(qi->desc);  in __dmar_enable_qi()
1581 	qi->free_head = qi->free_tail = 0;  in __dmar_enable_qi()
1582 	qi->free_cnt = QI_LENGTH;  in __dmar_enable_qi()
1614 	struct q_inval *qi;  in dmar_enable_qi()  local
1623 	if (iommu->qi)  in dmar_enable_qi()
1626 	iommu->qi = kmalloc(sizeof(*qi), GFP_ATOMIC);  in dmar_enable_qi()
1627 	if (!iommu->qi)  in dmar_enable_qi()
1630 	qi = iommu->qi;  in dmar_enable_qi()
1639 		kfree(qi);  in dmar_enable_qi()
1640 		iommu->qi = NULL;  in dmar_enable_qi()
1644 	qi->desc = page_address(desc_page);  in dmar_enable_qi()
1646 	qi->desc_status = kcalloc(QI_LENGTH, sizeof(int), GFP_ATOMIC);  in dmar_enable_qi()
1647 	if (!qi->desc_status) {  in dmar_enable_qi()
1648 		free_page((unsigned long) qi->desc);  in dmar_enable_qi()
1649 		kfree(qi);  in dmar_enable_qi()
1650 		iommu->qi = NULL;  in dmar_enable_qi()
1654 	raw_spin_lock_init(&qi->q_lock);  in dmar_enable_qi()
2004 	if (!iommu->qi)  in dmar_reenable_qi()