aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/qla2xxx/qla_inline.h
blob: 9902834e0b741f387acfa5a9f9fe2fbc62866847 (plain)
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
/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2011 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */

/*
 * 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 void
qla2x00_poll(struct rsp_que *rsp)
{
	unsigned long flags;
	struct qla_hw_data *ha = rsp->hw;
	local_irq_save(flags);
	if (IS_QLA82XX(ha))
		qla82xx_poll(0, rsp);
	else
		ha->isp_ops->intr_handler(0, rsp);
	local_irq_restore(flags);
}

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 *vha, uint16_t loop_id)
{
	struct qla_hw_data *ha = vha->hw;
	if (IS_FWI2_CAPABLE(ha))
		return (loop_id > NPH_LAST_HANDLE);

	return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
	    loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
}

static inline void
qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp)
{
	struct dsd_dma *dsd_ptr, *tdsd_ptr;

	/* clean up allocated prev pool */
	list_for_each_entry_safe(dsd_ptr, tdsd_ptr,
	    &((struct crc_context *)sp->ctx)->dsd_list, list) {
		dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr,
		    dsd_ptr->dsd_list_dma);
		list_del(&dsd_ptr->list);
		kfree(dsd_ptr);
	}
	INIT_LIST_HEAD(&((struct crc_context *)sp->ctx)->dsd_list);
}

static inline void
qla2x00_set_fcport_state(fc_port_t *fcport, int state)
{
	int old_state;

	old_state = atomic_read(&fcport->state);
	atomic_set(&fcport->state, state);

	/* Don't print state transitions during initial allocation of fcport */
	if (old_state && old_state != state) {
		ql_dbg(ql_dbg_disc, fcport->vha, 0x207d,
		    "FCPort state transitioned from %s to %s - "
		    "portid=%02x%02x%02x.\n",
		    port_state_str[old_state], port_state_str[state],
		    fcport->d_id.b.domain, fcport->d_id.b.area,
		    fcport->d_id.b.al_pa);
	}
}

static inline int
qla2x00_hba_err_chk_enabled(srb_t *sp)
{
	/*
	 * Uncomment when corresponding SCSI changes are done.
	 *
	if (!sp->cmd->prot_chk)
		return 0;
	 *
	 */

	switch (scsi_get_prot_op(sp->cmd)) {
	case SCSI_PROT_READ_STRIP:
	case SCSI_PROT_WRITE_INSERT:
		if (ql2xenablehba_err_chk >= 1)
			return 1;
		break;
	case SCSI_PROT_READ_PASS:
	case SCSI_PROT_WRITE_PASS:
		if (ql2xenablehba_err_chk >= 2)
			return 1;
		break;
	case SCSI_PROT_READ_INSERT:
	case SCSI_PROT_WRITE_STRIP:
		return 1;
	}
	return 0;
}