Merge branch 'linus' into x86/xsave
[linux-2.6] / 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(scsi_qla_host_t *ha)
36 {
37         unsigned long flags;
38
39         local_irq_save(flags);
40         ha->isp_ops->intr_handler(0, ha);
41         local_irq_restore(flags);
42 }
43
44 static __inline__ scsi_qla_host_t *
45 to_qla_parent(scsi_qla_host_t *ha)
46 {
47         return ha->parent ? ha->parent : ha;
48 }
49
50 /**
51  * qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
52  * @ha: HA context
53  * @ha_locked: is function called with the hardware lock
54  *
55  * Returns non-zero if a failure occurred, else zero.
56  */
57 static inline int
58 qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked)
59 {
60         /* Send marker if required */
61         if (ha->marker_needed != 0) {
62                 if (ha_locked) {
63                         if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
64                             QLA_SUCCESS)
65                                 return (QLA_FUNCTION_FAILED);
66                 } else {
67                         if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
68                             QLA_SUCCESS)
69                                 return (QLA_FUNCTION_FAILED);
70                 }
71                 ha->marker_needed = 0;
72         }
73         return (QLA_SUCCESS);
74 }
75
76 static inline uint8_t *
77 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
78 {
79        uint32_t *ifcp = (uint32_t *) fcp;
80        uint32_t *ofcp = (uint32_t *) fcp;
81        uint32_t iter = bsize >> 2;
82
83        for (; iter ; iter--)
84                *ofcp++ = swab32(*ifcp++);
85
86        return fcp;
87 }
88
89 static inline int
90 qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id)
91 {
92         if (IS_FWI2_CAPABLE(ha))
93                 return (loop_id > NPH_LAST_HANDLE);
94
95         return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
96             loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
97 };