/*
* Copyright 2009 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* [Insert appropriate license here when releasing outside of Cisco]
* $Id: fnic_kcompat.h 111268 2012-08-27 17:11:40Z atungara $
*/
#ifndef _FNIC_KCOMPAT_H_
#define _FNIC_KCOMPAT_H_
#include <scsi/scsi_host.h>
#if BITS_PER_LONG == 64
#define div_u64(divisor, dividend) \
(divisor) / (dividend); \
#else
/*
* This is not a generic macro. It is specific to a dividend of 10^6
*/
#define div_u64(divisor, dividend) \
/* \
* To convert to Megabytes, instead of dividing by 10^6, replace \
* by multiplying by (2 ^32 / 10^6 which is approx. 4295) \
* and then divide by 2^32. \
* \
* This avoids link break for 32 bit systems where the 64 bit \
* divide is not defined and keeps division error low, about 0.00076% \
*/ \
((divisor) * 4295) >> 32; \
#endif
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
#ifndef DID_TRANSPORT_DISRUPTED
#define DID_TRANSPORT_DISRUPTED DID_BUS_BUSY
#endif
#ifndef fc_block_scsi_eh
#define fc_block_scsi_eh(sc) fnic_block_error_handler(sc)
#endif
void fc_block_scsi_eh(struct scsi_cmnd *);
void scsi_dma_unmap(struct scsi_cmnd *);
int scsi_dma_map(struct scsi_cmnd *);
#endif /* _FNIC_KCOMPAT_H_ */