1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2010 QLogic Corporation
4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7
8 /*
9 *
10 * qla4xxx_lookup_ddb_by_fw_index
11 * This routine locates a device handle given the firmware device
12 * database index. If device doesn't exist, returns NULL.
13 *
14 * Input:
15 * ha - Pointer to host adapter structure.
16 * fw_ddb_index - Firmware's device database index
17 *
18 * Returns:
19 * Pointer to the corresponding internal device database structure
20 */
21 static inline struct ddb_entry *
qla4xxx_lookup_ddb_by_fw_index(struct scsi_qla_host * ha,uint32_t fw_ddb_index)22 qla4xxx_lookup_ddb_by_fw_index(struct scsi_qla_host *ha, uint32_t fw_ddb_index)
23 {
24 struct ddb_entry *ddb_entry = NULL;
25
26 if ((fw_ddb_index < MAX_DDB_ENTRIES) &&
27 (ha->fw_ddb_index_map[fw_ddb_index] !=
28 (struct ddb_entry *) INVALID_ENTRY)) {
29 ddb_entry = ha->fw_ddb_index_map[fw_ddb_index];
30 }
31
32 DEBUG3(printk("scsi%d: %s: ddb [%d], ddb_entry = %p\n",
33 ha->host_no, __func__, fw_ddb_index, ddb_entry));
34
35 return ddb_entry;
36 }
37
38 static inline void
__qla4xxx_enable_intrs(struct scsi_qla_host * ha)39 __qla4xxx_enable_intrs(struct scsi_qla_host *ha)
40 {
41 if (is_qla4022(ha) | is_qla4032(ha)) {
42 writel(set_rmask(IMR_SCSI_INTR_ENABLE),
43 &ha->reg->u1.isp4022.intr_mask);
44 readl(&ha->reg->u1.isp4022.intr_mask);
45 } else {
46 writel(set_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
47 readl(&ha->reg->ctrl_status);
48 }
49 set_bit(AF_INTERRUPTS_ON, &ha->flags);
50 }
51
52 static inline void
__qla4xxx_disable_intrs(struct scsi_qla_host * ha)53 __qla4xxx_disable_intrs(struct scsi_qla_host *ha)
54 {
55 if (is_qla4022(ha) | is_qla4032(ha)) {
56 writel(clr_rmask(IMR_SCSI_INTR_ENABLE),
57 &ha->reg->u1.isp4022.intr_mask);
58 readl(&ha->reg->u1.isp4022.intr_mask);
59 } else {
60 writel(clr_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
61 readl(&ha->reg->ctrl_status);
62 }
63 clear_bit(AF_INTERRUPTS_ON, &ha->flags);
64 }
65
66 static inline void
qla4xxx_enable_intrs(struct scsi_qla_host * ha)67 qla4xxx_enable_intrs(struct scsi_qla_host *ha)
68 {
69 unsigned long flags;
70
71 spin_lock_irqsave(&ha->hardware_lock, flags);
72 __qla4xxx_enable_intrs(ha);
73 spin_unlock_irqrestore(&ha->hardware_lock, flags);
74 }
75
76 static inline void
qla4xxx_disable_intrs(struct scsi_qla_host * ha)77 qla4xxx_disable_intrs(struct scsi_qla_host *ha)
78 {
79 unsigned long flags;
80
81 spin_lock_irqsave(&ha->hardware_lock, flags);
82 __qla4xxx_disable_intrs(ha);
83 spin_unlock_irqrestore(&ha->hardware_lock, flags);
84 }
85