mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 15:50:59 +07:00
5df6d737dd
fnic is a driver for the Cisco PCI-Express FCoE HBA Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/*
|
|
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova 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.
|
|
*/
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include "vnic_dev.h"
|
|
#include "vnic_cq.h"
|
|
|
|
void vnic_cq_free(struct vnic_cq *cq)
|
|
{
|
|
vnic_dev_free_desc_ring(cq->vdev, &cq->ring);
|
|
|
|
cq->ctrl = NULL;
|
|
}
|
|
|
|
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
|
|
unsigned int desc_count, unsigned int desc_size)
|
|
{
|
|
int err;
|
|
|
|
cq->index = index;
|
|
cq->vdev = vdev;
|
|
|
|
cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);
|
|
if (!cq->ctrl) {
|
|
printk(KERN_ERR "Failed to hook CQ[%d] resource\n", index);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
|
|
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
|
|
unsigned int cq_tail_color, unsigned int interrupt_enable,
|
|
unsigned int cq_entry_enable, unsigned int cq_message_enable,
|
|
unsigned int interrupt_offset, u64 cq_message_addr)
|
|
{
|
|
u64 paddr;
|
|
|
|
paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
|
|
writeq(paddr, &cq->ctrl->ring_base);
|
|
iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
|
|
iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
|
|
iowrite32(color_enable, &cq->ctrl->color_enable);
|
|
iowrite32(cq_head, &cq->ctrl->cq_head);
|
|
iowrite32(cq_tail, &cq->ctrl->cq_tail);
|
|
iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
|
|
iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
|
|
iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
|
|
iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
|
|
iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
|
|
writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
|
|
}
|
|
|
|
void vnic_cq_clean(struct vnic_cq *cq)
|
|
{
|
|
cq->to_clean = 0;
|
|
cq->last_color = 0;
|
|
|
|
iowrite32(0, &cq->ctrl->cq_head);
|
|
iowrite32(0, &cq->ctrl->cq_tail);
|
|
iowrite32(1, &cq->ctrl->cq_tail_color);
|
|
|
|
vnic_dev_clear_desc_ring(&cq->ring);
|
|
}
|