[go: nahoru, domu]
1/*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c)  2003-2013 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 */
21static inline struct ddb_entry *
22qla4xxx_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
38static inline void
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
52static inline void
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
66static inline void
67qla4xxx_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
76static inline void
77qla4xxx_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
86static inline int qla4xxx_get_chap_type(struct ql4_chap_table *chap_entry)
87{
88	int type;
89
90	if (chap_entry->flags & BIT_7)
91		type = LOCAL_CHAP;
92	else
93		type = BIDI_CHAP;
94
95	return type;
96}
97