69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
|
|
* Copyright 2008-2010 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/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include "vnic_dev.h"
|
|
#include "vnic_intr.h"
|
|
|
|
void vnic_intr_free(struct vnic_intr *intr)
|
|
{
|
|
intr->ctrl = NULL;
|
|
}
|
|
|
|
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
|
|
unsigned int index)
|
|
{
|
|
intr->index = index;
|
|
intr->vdev = vdev;
|
|
|
|
intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
|
|
if (!intr->ctrl) {
|
|
pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
|
|
unsigned int coalescing_type, unsigned int mask_on_assertion)
|
|
{
|
|
vnic_intr_coalescing_timer_set(intr, coalescing_timer);
|
|
iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
|
|
iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
|
|
iowrite32(0, &intr->ctrl->int_credits);
|
|
}
|
|
|
|
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
|
|
u32 coalescing_timer)
|
|
{
|
|
iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
|
|
coalescing_timer), &intr->ctrl->coalescing_timer);
|
|
}
|
|
|
|
void vnic_intr_clean(struct vnic_intr *intr)
|
|
{
|
|
iowrite32(0, &intr->ctrl->int_credits);
|
|
}
|