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/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2008 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(scsi_qla_host_t *ha)
{
ha->isp_ops->intr_handler(0, ha);
}
static __inline__ scsi_qla_host_t *
to_qla_parent(scsi_qla_host_t *ha)
{
return ha->parent ? ha->parent : ha;
}
/**
* 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 *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 *ha, uint16_t loop_id)
{
if (IS_FWI2_CAPABLE(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);
};
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