[SCSI] qla2xxx: Code changes for qla data structure refactoring
[pandora-kernel.git] / drivers / scsi / qla2xxx / qla_inline.h
1 /*
2  * QLogic Fibre Channel HBA Driver
3  * Copyright (c)  2003-2008 QLogic Corporation
4  *
5  * See LICENSE.qla2xxx for copyright and licensing details.
6  */
7
8 /*
9  * qla2x00_debounce_register
10  *      Debounce register.
11  *
12  * Input:
13  *      port = register address.
14  *
15  * Returns:
16  *      register value.
17  */
18 static __inline__ uint16_t
19 qla2x00_debounce_register(volatile uint16_t __iomem *addr)
20 {
21         volatile uint16_t first;
22         volatile uint16_t second;
23
24         do {
25                 first = RD_REG_WORD(addr);
26                 barrier();
27                 cpu_relax();
28                 second = RD_REG_WORD(addr);
29         } while (first != second);
30
31         return (first);
32 }
33
34 static inline void
35 qla2x00_poll(struct rsp_que *rsp)
36 {
37         unsigned long flags;
38         struct qla_hw_data *ha = rsp->hw;
39         local_irq_save(flags);
40         ha->isp_ops->intr_handler(0, rsp);
41         local_irq_restore(flags);
42 }
43
44 /**
45  * qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
46  * @ha: HA context
47  * @ha_locked: is function called with the hardware lock
48  *
49  * Returns non-zero if a failure occurred, else zero.
50  */
51 static inline int
52 qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
53 {
54         /* Send marker if required */
55         if (vha->marker_needed != 0) {
56                 if (ha_locked) {
57                         if (__qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
58                             QLA_SUCCESS)
59                                 return (QLA_FUNCTION_FAILED);
60                 } else {
61                         if (qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
62                             QLA_SUCCESS)
63                                 return (QLA_FUNCTION_FAILED);
64                 }
65                 vha->marker_needed = 0;
66         }
67         return (QLA_SUCCESS);
68 }
69
70 static inline uint8_t *
71 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
72 {
73        uint32_t *ifcp = (uint32_t *) fcp;
74        uint32_t *ofcp = (uint32_t *) fcp;
75        uint32_t iter = bsize >> 2;
76
77        for (; iter ; iter--)
78                *ofcp++ = swab32(*ifcp++);
79
80        return fcp;
81 }
82
83 static inline int
84 qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
85 {
86         struct qla_hw_data *ha = vha->hw;
87         if (IS_FWI2_CAPABLE(ha))
88                 return (loop_id > NPH_LAST_HANDLE);
89
90         return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
91             loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
92 };