2 * Copyright 2008 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>
28 void vnic_cq_free(struct vnic_cq
*cq
)
30 vnic_dev_free_desc_ring(cq
->vdev
, &cq
->ring
);
35 int vnic_cq_alloc(struct vnic_dev
*vdev
, struct vnic_cq
*cq
, unsigned int index
,
36 unsigned int desc_count
, unsigned int desc_size
)
43 cq
->ctrl
= vnic_dev_get_res(vdev
, RES_TYPE_CQ
, index
);
45 printk(KERN_ERR
"Failed to hook CQ[%d] resource\n", index
);
49 err
= vnic_dev_alloc_desc_ring(vdev
, &cq
->ring
, desc_count
, desc_size
);
56 void vnic_cq_init(struct vnic_cq
*cq
, unsigned int flow_control_enable
,
57 unsigned int color_enable
, unsigned int cq_head
, unsigned int cq_tail
,
58 unsigned int cq_tail_color
, unsigned int interrupt_enable
,
59 unsigned int cq_entry_enable
, unsigned int cq_message_enable
,
60 unsigned int interrupt_offset
, u64 cq_message_addr
)
64 paddr
= (u64
)cq
->ring
.base_addr
| VNIC_PADDR_TARGET
;
65 writeq(paddr
, &cq
->ctrl
->ring_base
);
66 iowrite32(cq
->ring
.desc_count
, &cq
->ctrl
->ring_size
);
67 iowrite32(flow_control_enable
, &cq
->ctrl
->flow_control_enable
);
68 iowrite32(color_enable
, &cq
->ctrl
->color_enable
);
69 iowrite32(cq_head
, &cq
->ctrl
->cq_head
);
70 iowrite32(cq_tail
, &cq
->ctrl
->cq_tail
);
71 iowrite32(cq_tail_color
, &cq
->ctrl
->cq_tail_color
);
72 iowrite32(interrupt_enable
, &cq
->ctrl
->interrupt_enable
);
73 iowrite32(cq_entry_enable
, &cq
->ctrl
->cq_entry_enable
);
74 iowrite32(cq_message_enable
, &cq
->ctrl
->cq_message_enable
);
75 iowrite32(interrupt_offset
, &cq
->ctrl
->interrupt_offset
);
76 writeq(cq_message_addr
, &cq
->ctrl
->cq_message_addr
);
79 void vnic_cq_clean(struct vnic_cq
*cq
)
84 iowrite32(0, &cq
->ctrl
->cq_head
);
85 iowrite32(0, &cq
->ctrl
->cq_tail
);
86 iowrite32(1, &cq
->ctrl
->cq_tail_color
);
88 vnic_dev_clear_desc_ring(&cq
->ring
);
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