tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 */
6
7#ifndef _VNIC_CQ_H_
8#define _VNIC_CQ_H_
9
10#include "cq_desc.h"
11#include "vnic_dev.h"
12
13/* Completion queue control */
14struct vnic_cq_ctrl {
15 u64 ring_base; /* 0x00 */
16 u32 ring_size; /* 0x08 */
17 u32 pad0;
18 u32 flow_control_enable; /* 0x10 */
19 u32 pad1;
20 u32 color_enable; /* 0x18 */
21 u32 pad2;
22 u32 cq_head; /* 0x20 */
23 u32 pad3;
24 u32 cq_tail; /* 0x28 */
25 u32 pad4;
26 u32 cq_tail_color; /* 0x30 */
27 u32 pad5;
28 u32 interrupt_enable; /* 0x38 */
29 u32 pad6;
30 u32 cq_entry_enable; /* 0x40 */
31 u32 pad7;
32 u32 cq_message_enable; /* 0x48 */
33 u32 pad8;
34 u32 interrupt_offset; /* 0x50 */
35 u32 pad9;
36 u64 cq_message_addr; /* 0x58 */
37 u32 pad10;
38};
39
40struct vnic_rx_bytes_counter {
41 unsigned int small_pkt_bytes_cnt;
42 unsigned int large_pkt_bytes_cnt;
43};
44
45struct vnic_cq {
46 unsigned int index;
47 struct vnic_dev *vdev;
48 struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */
49 struct vnic_dev_ring ring;
50 unsigned int to_clean;
51 unsigned int last_color;
52 unsigned int interrupt_offset;
53 struct vnic_rx_bytes_counter pkt_size_counter;
54 unsigned int cur_rx_coal_timeval;
55 unsigned int tobe_rx_coal_timeval;
56 ktime_t prev_ts;
57};
58
59static inline void *vnic_cq_to_clean(struct vnic_cq *cq)
60{
61 return ((u8 *)cq->ring.descs + cq->ring.desc_size * cq->to_clean);
62}
63
64static inline void vnic_cq_inc_to_clean(struct vnic_cq *cq)
65{
66 cq->to_clean++;
67 if (cq->to_clean == cq->ring.desc_count) {
68 cq->to_clean = 0;
69 cq->last_color = cq->last_color ? 0 : 1;
70 }
71}
72
73void vnic_cq_free(struct vnic_cq *cq);
74int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
75 unsigned int desc_count, unsigned int desc_size);
76int vnic_cq_alloc_with_type(struct vnic_dev *vdev, struct vnic_cq *cq,
77 unsigned int index, unsigned int desc_count,
78 unsigned int desc_size, unsigned int res_type);
79void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
80 unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
81 unsigned int cq_tail_color, unsigned int interrupt_enable,
82 unsigned int cq_entry_enable, unsigned int message_enable,
83 unsigned int interrupt_offset, u64 message_addr);
84void vnic_cq_clean(struct vnic_cq *cq);
85
86#endif /* _VNIC_CQ_H_ */