mirror of https://gitee.com/openkylin/linux.git
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
|
|
* 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(struct rsp_que *rsp)
|
|
{
|
|
unsigned long flags;
|
|
struct qla_hw_data *ha = rsp->hw;
|
|
local_irq_save(flags);
|
|
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);
|
|
}
|