2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
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.
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
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>
27 #include "vnic_intr.h"
29 void vnic_intr_free(struct vnic_intr
*intr
)
34 int vnic_intr_alloc(struct vnic_dev
*vdev
, struct vnic_intr
*intr
,
40 intr
->ctrl
= vnic_dev_get_res(vdev
, RES_TYPE_INTR_CTRL
, index
);
42 pr_err("Failed to hook INTR[%d].ctrl resource\n", index
);
49 void vnic_intr_init(struct vnic_intr
*intr
, unsigned int coalescing_timer
,
50 unsigned int coalescing_type
, unsigned int mask_on_assertion
)
52 vnic_intr_coalescing_timer_set(intr
, coalescing_timer
);
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
);
58 void vnic_intr_coalescing_timer_set(struct vnic_intr
*intr
,
59 unsigned int coalescing_timer
)
61 iowrite32(coalescing_timer
, &intr
->ctrl
->coalescing_timer
);
64 void vnic_intr_clean(struct vnic_intr
*intr
)
66 iowrite32(0, &intr
->ctrl
->int_credits
);