1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2005 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *);
/*
* qla2x00_debounce_register
* Debounce register.
*
* Input:
* port = register address.
*
* Returns:
* register value.
*/
static __inline__ uint16_t
qla2x00_debounce_register(volatile uint16_t __iomem *addr)
{
volatile uint16_t first;
volatile uint16_t second;
do {
first = RD_REG_WORD(addr);
barrier();
cpu_relax();
second = RD_REG_WORD(addr);
} while (first != second);
return (first);
}
static __inline__ int qla2x00_normalize_dma_addr(
dma_addr_t *e_addr, uint32_t *e_len,
dma_addr_t *ne_addr, uint32_t *ne_len);
/**
* qla2x00_normalize_dma_addr() - Normalize an DMA address.
* @e_addr: Raw DMA address
* @e_len: Raw DMA length
* @ne_addr: Normalized second DMA address
* @ne_len: Normalized second DMA length
*
* If the address does not span a 4GB page boundary, the contents of @ne_addr
* and @ne_len are undefined. @e_len is updated to reflect a normalization.
*
* Example:
*
* ffffabc0ffffeeee (e_addr) start of DMA address
* 0000000020000000 (e_len) length of DMA transfer
* ffffabc11fffeeed end of DMA transfer
*
* Is the 4GB boundary crossed?
*
* ffffabc0ffffeeee (e_addr)
* ffffabc11fffeeed (e_addr + e_len - 1)
* 00000001e0000003 ((e_addr ^ (e_addr + e_len - 1))
* 0000000100000000 ((e_addr ^ (e_addr + e_len - 1)) & ~(0xffffffff)
*
* Compute start of second DMA segment:
*
* ffffabc0ffffeeee (e_addr)
* ffffabc1ffffeeee (0x100000000 + e_addr)
* ffffabc100000000 (0x100000000 + e_addr) & ~(0xffffffff)
* ffffabc100000000 (ne_addr)
*
* Compute length of second DMA segment:
*
* 00000000ffffeeee (e_addr & 0xffffffff)
* 0000000000001112 (0x100000000 - (e_addr & 0xffffffff))
* 000000001fffeeee (e_len - (0x100000000 - (e_addr & 0xffffffff))
* 000000001fffeeee (ne_len)
*
* Adjust length of first DMA segment
*
* 0000000020000000 (e_len)
* 0000000000001112 (e_len - ne_len)
* 0000000000001112 (e_len)
*
* Returns non-zero if the specified address was normalized, else zero.
*/
static __inline__ int
qla2x00_normalize_dma_addr(
dma_addr_t *e_addr, uint32_t *e_len,
dma_addr_t *ne_addr, uint32_t *ne_len)
{
int normalized;
normalized = 0;
if ((*e_addr ^ (*e_addr + *e_len - 1)) & ~(0xFFFFFFFFULL)) {
/* Compute normalized crossed address and len */
*ne_addr = (0x100000000ULL + *e_addr) & ~(0xFFFFFFFFULL);
*ne_len = *e_len - (0x100000000ULL - (*e_addr & 0xFFFFFFFFULL));
*e_len -= *ne_len;
normalized++;
}
return (normalized);
}
static __inline__ void qla2x00_poll(scsi_qla_host_t *);
static inline void
qla2x00_poll(scsi_qla_host_t *ha)
{
ha->isp_ops.intr_handler(0, ha);
}
static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *);
/*
* This routine will wait for fabric devices for
* the reset delay.
*/
static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *ha)
{
uint16_t fw_state;
qla2x00_get_firmware_state(ha, &fw_state);
}
/**
* qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
* @ha: HA context
* @ha_locked: is function called with the hardware lock
*
* Returns non-zero if a failure occured, else zero.
*/
static inline int
qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked)
{
/* Send marker if required */
if (ha->marker_needed != 0) {
if (ha_locked) {
if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS)
return (QLA_FUNCTION_FAILED);
} else {
if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
QLA_SUCCESS)
return (QLA_FUNCTION_FAILED);
}
ha->marker_needed = 0;
}
return (QLA_SUCCESS);
}
static inline uint8_t *host_to_fcp_swap(uint8_t *, uint32_t);
static inline uint8_t *
host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
{
uint32_t *ifcp = (uint32_t *) fcp;
uint32_t *ofcp = (uint32_t *) fcp;
uint32_t iter = bsize >> 2;
for (; iter ; iter--)
*ofcp++ = swab32(*ifcp++);
return fcp;
}
static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t);
static inline int
qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id)
{
if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
return (loop_id > NPH_LAST_HANDLE);
return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
};
|
