206 строки
4.2 KiB
C
206 строки
4.2 KiB
C
/*
|
|
* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
|
|
* All rights reserved
|
|
* www.brocade.com
|
|
*
|
|
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License (GPL) Version 2 as
|
|
* published by the Free Software Foundation
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
|
|
/**
|
|
* bfa_cb_ioim_macros.h BFA IOIM driver interface macros.
|
|
*/
|
|
|
|
#ifndef __BFA_HCB_IOIM_MACROS_H__
|
|
#define __BFA_HCB_IOIM_MACROS_H__
|
|
|
|
#include <bfa_os_inc.h>
|
|
/*
|
|
* #include <linux/dma-mapping.h>
|
|
*
|
|
* #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include
|
|
* <scsi/scsi_device.h> #include <scsi/scsi_host.h>
|
|
*/
|
|
#include "bfad_im_compat.h"
|
|
|
|
/*
|
|
* task attribute values in FCP-2 FCP_CMND IU
|
|
*/
|
|
#define SIMPLE_Q 0
|
|
#define HEAD_OF_Q 1
|
|
#define ORDERED_Q 2
|
|
#define ACA_Q 4
|
|
#define UNTAGGED 5
|
|
|
|
static inline lun_t
|
|
bfad_int_to_lun(u32 luno)
|
|
{
|
|
union {
|
|
u16 scsi_lun[4];
|
|
lun_t bfa_lun;
|
|
} lun;
|
|
|
|
lun.bfa_lun = 0;
|
|
lun.scsi_lun[0] = bfa_os_htons(luno);
|
|
|
|
return lun.bfa_lun;
|
|
}
|
|
|
|
/**
|
|
* Get LUN for the I/O request
|
|
*/
|
|
#define bfa_cb_ioim_get_lun(__dio) \
|
|
bfad_int_to_lun(((struct scsi_cmnd *)__dio)->device->lun)
|
|
|
|
/**
|
|
* Get CDB for the I/O request
|
|
*/
|
|
static inline u8 *
|
|
bfa_cb_ioim_get_cdb(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
|
|
return (u8 *) cmnd->cmnd;
|
|
}
|
|
|
|
/**
|
|
* Get I/O direction (read/write) for the I/O request
|
|
*/
|
|
static inline enum fcp_iodir
|
|
bfa_cb_ioim_get_iodir(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
enum dma_data_direction dmadir;
|
|
|
|
dmadir = cmnd->sc_data_direction;
|
|
if (dmadir == DMA_TO_DEVICE)
|
|
return FCP_IODIR_WRITE;
|
|
else if (dmadir == DMA_FROM_DEVICE)
|
|
return FCP_IODIR_READ;
|
|
else
|
|
return FCP_IODIR_NONE;
|
|
}
|
|
|
|
/**
|
|
* Get IO size in bytes for the I/O request
|
|
*/
|
|
static inline u32
|
|
bfa_cb_ioim_get_size(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
|
|
return scsi_bufflen(cmnd);
|
|
}
|
|
|
|
/**
|
|
* Get timeout for the I/O request
|
|
*/
|
|
static inline u8
|
|
bfa_cb_ioim_get_timeout(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
/*
|
|
* TBD: need a timeout for scsi passthru
|
|
*/
|
|
if (cmnd->device->host == NULL)
|
|
return 4;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get SG element for the I/O request given the SG element index
|
|
*/
|
|
static inline union bfi_addr_u
|
|
bfa_cb_ioim_get_sgaddr(struct bfad_ioim_s *dio, int sgeid)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
struct scatterlist *sge;
|
|
u64 addr;
|
|
|
|
sge = (struct scatterlist *)scsi_sglist(cmnd) + sgeid;
|
|
addr = (u64) sg_dma_address(sge);
|
|
|
|
return *((union bfi_addr_u *) &addr);
|
|
}
|
|
|
|
static inline u32
|
|
bfa_cb_ioim_get_sglen(struct bfad_ioim_s *dio, int sgeid)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
struct scatterlist *sge;
|
|
u32 len;
|
|
|
|
sge = (struct scatterlist *)scsi_sglist(cmnd) + sgeid;
|
|
len = sg_dma_len(sge);
|
|
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* Get Command Reference Number for the I/O request. 0 if none.
|
|
*/
|
|
static inline u8
|
|
bfa_cb_ioim_get_crn(struct bfad_ioim_s *dio)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get SAM-3 priority for the I/O request. 0 is default.
|
|
*/
|
|
static inline u8
|
|
bfa_cb_ioim_get_priority(struct bfad_ioim_s *dio)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get task attributes for the I/O request. Default is FCP_TASK_ATTR_SIMPLE(0).
|
|
*/
|
|
static inline u8
|
|
bfa_cb_ioim_get_taskattr(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
u8 task_attr = UNTAGGED;
|
|
|
|
if (cmnd->device->tagged_supported) {
|
|
switch (cmnd->tag) {
|
|
case HEAD_OF_QUEUE_TAG:
|
|
task_attr = HEAD_OF_Q;
|
|
break;
|
|
case ORDERED_QUEUE_TAG:
|
|
task_attr = ORDERED_Q;
|
|
break;
|
|
default:
|
|
task_attr = SIMPLE_Q;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return task_attr;
|
|
}
|
|
|
|
/**
|
|
* Get CDB length in bytes for the I/O request. Default is FCP_CMND_CDB_LEN(16).
|
|
*/
|
|
static inline u8
|
|
bfa_cb_ioim_get_cdblen(struct bfad_ioim_s *dio)
|
|
{
|
|
struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
|
|
|
|
return cmnd->cmd_len;
|
|
}
|
|
|
|
|
|
|
|
#endif /* __BFA_HCB_IOIM_MACROS_H__ */
|