c8806b6c9e
Cisco has developed a new PCI HBA interface called sNIC, which stands for SCSI NIC. This is a new storage feature supported on specialized network adapter. The new PCI function provides a uniform host interface and abstracts backend storage. [jejb: fix up checkpatch errors] Signed-off-by: Narsimhulu Musini <nmusini@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
|
|
* Copyright 2014 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.
|
|
*/
|
|
|
|
#ifndef _VNIC_CQ_FW_H_
|
|
#define _VNIC_CQ_FW_H_
|
|
|
|
#include "snic_fwint.h"
|
|
|
|
static inline unsigned int
|
|
vnic_cq_fw_service(struct vnic_cq *cq,
|
|
int (*q_service)(struct vnic_dev *vdev,
|
|
unsigned int index,
|
|
struct snic_fw_req *desc),
|
|
unsigned int work_to_do)
|
|
|
|
{
|
|
struct snic_fw_req *desc;
|
|
unsigned int work_done = 0;
|
|
u8 color;
|
|
|
|
desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
|
|
cq->ring.desc_size * cq->to_clean);
|
|
snic_color_dec(desc, &color);
|
|
|
|
while (color != cq->last_color) {
|
|
|
|
if ((*q_service)(cq->vdev, cq->index, desc))
|
|
break;
|
|
|
|
cq->to_clean++;
|
|
if (cq->to_clean == cq->ring.desc_count) {
|
|
cq->to_clean = 0;
|
|
cq->last_color = cq->last_color ? 0 : 1;
|
|
}
|
|
|
|
desc = (struct snic_fw_req *)((u8 *)cq->ring.descs +
|
|
cq->ring.desc_size * cq->to_clean);
|
|
snic_color_dec(desc, &color);
|
|
|
|
work_done++;
|
|
if (work_done >= work_to_do)
|
|
break;
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
#endif /* _VNIC_CQ_FW_H_ */
|