[net-next-2.6.git] / drivers / net / enic / vnic_intr.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, unsigned int 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,
	unsigned int coalescing_timer)
{
	iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
}

void vnic_intr_clean(struct vnic_intr *intr)
{
	iowrite32(0, &intr->ctrl->int_credits);
}
Commit	Line	Data
01f2e4ea	1	/*
29046f9b	2	* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
01f2e4ea SF	3	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	4	*
	5	* This program is free software; you may redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; version 2 of the License.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	10	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	11	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	12	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	13	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	14	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	15	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	16	* SOFTWARE.
	17	*
	18	*/
	19
	20	#include <linux/kernel.h>
	21	#include <linux/errno.h>
	22	#include <linux/types.h>
	23	#include <linux/pci.h>
	24	#include <linux/delay.h>
	25
	26	#include "vnic_dev.h"
	27	#include "vnic_intr.h"
	28
	29	void vnic_intr_free(struct vnic_intr *intr)
	30	{
	31	intr->ctrl = NULL;
	32	}
	33
	34	int vnic_intr_alloc(struct vnic_dev vdev, struct vnic_intr intr,
	35	unsigned int index)
	36	{
	37	intr->index = index;
	38	intr->vdev = vdev;
	39
	40	intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
	41	if (!intr->ctrl) {
a7a79deb	42	pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
01f2e4ea SF	43	return -EINVAL;
	44	}
	45
	46	return 0;
	47	}
	48
	49	void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
	50	unsigned int coalescing_type, unsigned int mask_on_assertion)
	51	{
7c844599	52	vnic_intr_coalescing_timer_set(intr, coalescing_timer);
01f2e4ea SF	53	iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
	54	iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
	55	iowrite32(0, &intr->ctrl->int_credits);
	56	}
	57
7c844599 SF	58	void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
	59	unsigned int coalescing_timer)
	60	{
	61	iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
	62	}
	63
01f2e4ea SF	64	void vnic_intr_clean(struct vnic_intr *intr)
	65	{
	66	iowrite32(0, &intr->ctrl->int_credits);
	67	}