94 строки
1.9 KiB
C
94 строки
1.9 KiB
C
/*
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* QLogic Fibre Channel HBA Driver
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* Copyright (c) 2003-2008 QLogic Corporation
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*
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* See LICENSE.qla2xxx for copyright and licensing details.
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*/
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/*
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* qla2x00_debounce_register
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* Debounce register.
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*
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* Input:
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* port = register address.
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*
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* Returns:
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* register value.
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*/
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static __inline__ uint16_t
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qla2x00_debounce_register(volatile uint16_t __iomem *addr)
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{
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volatile uint16_t first;
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volatile uint16_t second;
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do {
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first = RD_REG_WORD(addr);
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barrier();
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cpu_relax();
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second = RD_REG_WORD(addr);
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} while (first != second);
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return (first);
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}
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static inline void
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qla2x00_poll(scsi_qla_host_t *ha)
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{
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ha->isp_ops->intr_handler(0, ha);
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}
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static __inline__ scsi_qla_host_t *
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to_qla_parent(scsi_qla_host_t *ha)
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{
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return ha->parent ? ha->parent : ha;
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}
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/**
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* qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
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* @ha: HA context
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* @ha_locked: is function called with the hardware lock
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*
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* Returns non-zero if a failure occured, else zero.
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*/
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static inline int
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qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked)
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{
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/* Send marker if required */
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if (ha->marker_needed != 0) {
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if (ha_locked) {
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if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
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QLA_SUCCESS)
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return (QLA_FUNCTION_FAILED);
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} else {
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if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
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QLA_SUCCESS)
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return (QLA_FUNCTION_FAILED);
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}
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ha->marker_needed = 0;
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}
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return (QLA_SUCCESS);
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}
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static inline uint8_t *
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host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
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{
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uint32_t *ifcp = (uint32_t *) fcp;
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uint32_t *ofcp = (uint32_t *) fcp;
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uint32_t iter = bsize >> 2;
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for (; iter ; iter--)
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*ofcp++ = swab32(*ifcp++);
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return fcp;
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}
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static inline int
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qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id)
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{
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if (IS_FWI2_CAPABLE(ha))
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return (loop_id > NPH_LAST_HANDLE);
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return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
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loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
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};
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