[SCSI] Initial Commit of qla4xxx
[sfrench/cifs-2.6.git] / drivers / scsi / qla4xxx / ql4_inline.h
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2006 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 *
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: index [%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
39 __qla4xxx_enable_intrs(struct scsi_qla_host *ha)
40 {
41         if (is_qla4022(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
53 __qla4xxx_disable_intrs(struct scsi_qla_host *ha)
54 {
55         if (is_qla4022(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
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
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 }