/*
 * Portions Copyright 2008 VMware, Inc.
 */
/* drivers/message/fusion/linux_compat.h */
#ifndef FUSION_LINUX_COMPAT_H
#define FUSION_LINUX_COMPAT_H

#include <linux/version.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi.h>
#include <scsi/scsi_transport_sas.h>

#ifndef PCI_VENDOR_ID_ATTO
#define PCI_VENDOR_ID_ATTO	0x117c
#endif

#ifndef PCI_VENDOR_ID_BROCADE
#define PCI_VENDOR_ID_BROCADE	0x1657
#endif

/*
 * TODO Need to change 'shost_private' back to 'shost_priv' when suppying patchs
 * upstream.  Since Red Hat decided to backport this to rhel5.2 (2.6.18-92.el5)
 * from the 2.6.23 kernel, it will make it difficult for us to add the proper
 * glue in our driver.
 */
static inline void *shost_private(struct Scsi_Host *shost)
{
        return (void *)shost->hostdata;
}

#ifndef spi_dv_pending
#define spi_dv_pending(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_pending)
#endif
#ifndef	upper_32_bits
#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
#endif
#ifndef	lower_32_bits
#define lower_32_bits(n) ((u32)(n))
#endif
/**
 * mpt_scsilun_to_int: convert a scsi_lun to an int
 * @scsilun:    struct scsi_lun to be converted.
 *
 * Description:
 *     Convert @scsilun from a struct scsi_lun to a four byte host byte-ordered
 *     integer, and return the result. The caller must check for
 *     truncation before using this function.
 *
 * Notes:
 *     The struct scsi_lun is assumed to be four levels, with each level
 *     effectively containing a SCSI byte-ordered (big endian) short; the
 *     addressing bits of each level are ignored (the highest two bits).
 *     For a description of the LUN format, post SCSI-3 see the SCSI
 *     Architecture Model, for SCSI-3 see the SCSI Controller Commands.
 *
 *     Given a struct scsi_lun of: 0a 04 0b 03 00 00 00 00, this function returns
 *     the integer: 0x0b030a04
 **/
static inline int mpt_scsilun_to_int(struct scsi_lun *scsilun)
{
        int i;
        unsigned int lun;

        lun = 0;
        for (i = 0; i < sizeof(lun); i += 2)
                lun = lun | (((scsilun->scsi_lun[i] << 8) |
                              scsilun->scsi_lun[i + 1]) << (i * 8));
        return lun;
}
#if (defined(CONFIG_SUSE_KERNEL) && !defined(scsi_is_sas_phy_local))
#define SUSE_KERNEL_BASE	1
#endif
/*}-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#endif /* _LINUX_COMPAT_H */