blob: e90afad120ee359cbc665d85c35662eeb8b0338b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Andrew Vasquezfa90c542005-10-27 11:10:08 -07002 * QLogic Fibre Channel HBA Driver
Andrew Vasquez01e58d82008-04-03 13:13:13 -07003 * Copyright (c) 2003-2008 QLogic Corporation
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Andrew Vasquezfa90c542005-10-27 11:10:08 -07005 * See LICENSE.qla2xxx for copyright and licensing details.
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 */
7
Linus Torvalds1da177e2005-04-16 15:20:36 -07008/*
9 * qla2x00_debounce_register
10 * Debounce register.
11 *
12 * Input:
13 * port = register address.
14 *
15 * Returns:
16 * register value.
17 */
18static __inline__ uint16_t
Andrew Vasquezfa2a1ce2005-07-06 10:32:07 -070019qla2x00_debounce_register(volatile uint16_t __iomem *addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070020{
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
Andrew Vasquezfa2a1ce2005-07-06 10:32:07 -070034static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -070035qla2x00_poll(scsi_qla_host_t *ha)
36{
Andrew Vasquezd2ba5672008-05-12 22:21:14 -070037 unsigned long flags;
38
39 local_irq_save(flags);
Andrew Vasquezfd34f552007-07-19 15:06:00 -070040 ha->isp_ops->intr_handler(0, ha);
Andrew Vasquezd2ba5672008-05-12 22:21:14 -070041 local_irq_restore(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042}
43
Seokmann Juda4541b2008-01-31 12:33:52 -080044static __inline__ scsi_qla_host_t *
45to_qla_parent(scsi_qla_host_t *ha)
46{
47 return ha->parent ? ha->parent : ha;
48}
49
Linus Torvalds1da177e2005-04-16 15:20:36 -070050/**
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 *
Bjorn Helgaascc3ef7b2008-09-11 21:22:51 -070055 * Returns non-zero if a failure occurred, else zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 */
57static inline int
58qla2x00_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
Andrew Vasquez2b6c0ce2005-07-06 10:31:17 -070076static inline uint8_t *
77host_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}
Andrew Vasquez3d716442005-07-06 10:30:26 -070088
Andrew Vasquez3d716442005-07-06 10:30:26 -070089static inline int
90qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id)
91{
Andrew Vasqueze4289242007-07-19 15:05:56 -070092 if (IS_FWI2_CAPABLE(ha))
Andrew Vasquez3d716442005-07-06 10:30:26 -070093 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};