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18#include <linux/errno.h>
19#include <linux/types.h>
20#include <linux/pci.h>
21#include "vnic_dev.h"
22#include "vnic_cq.h"
23
24void svnic_cq_free(struct vnic_cq *cq)
25{
26 svnic_dev_free_desc_ring(cq->vdev, &cq->ring);
27
28 cq->ctrl = NULL;
29}
30
31int svnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq,
32 unsigned int index, unsigned int desc_count, unsigned int desc_size)
33{
34 cq->index = index;
35 cq->vdev = vdev;
36
37 cq->ctrl = svnic_dev_get_res(vdev, RES_TYPE_CQ, index);
38 if (!cq->ctrl) {
39 pr_err("Failed to hook CQ[%d] resource\n", index);
40
41 return -EINVAL;
42 }
43
44 return svnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
45}
46
47void svnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
48 unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
49 unsigned int cq_tail_color, unsigned int interrupt_enable,
50 unsigned int cq_entry_enable, unsigned int cq_message_enable,
51 unsigned int interrupt_offset, u64 cq_message_addr)
52{
53 u64 paddr;
54
55 paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
56 writeq(paddr, &cq->ctrl->ring_base);
57 iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
58 iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
59 iowrite32(color_enable, &cq->ctrl->color_enable);
60 iowrite32(cq_head, &cq->ctrl->cq_head);
61 iowrite32(cq_tail, &cq->ctrl->cq_tail);
62 iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
63 iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
64 iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
65 iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
66 iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
67 writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
68}
69
70void svnic_cq_clean(struct vnic_cq *cq)
71{
72 cq->to_clean = 0;
73 cq->last_color = 0;
74
75 iowrite32(0, &cq->ctrl->cq_head);
76 iowrite32(0, &cq->ctrl->cq_tail);
77 iowrite32(1, &cq->ctrl->cq_tail_color);
78
79 svnic_dev_clear_desc_ring(&cq->ring);
80}
81