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3644 Add virtio-net support into the Illumos
Reviewed by: Alexey Zaytsev, alexey.zaytsev@gmail.com
Reviewed by: Yuri Pankov, yuri.pankov@nexenta.com
Reviewed by: David Hoppner, 0xffea@gmail.com
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--- old/usr/src/uts/common/io/virtio/virtiovar.h
+++ new/usr/src/uts/common/io/virtio/virtiovar.h
1 1 /*
2 2 * Copyright (c) 2010 Minoura Makoto.
3 3 * All rights reserved.
4 4 *
5 5 * Redistribution and use in source and binary forms, with or without
6 6 * modification, are permitted provided that the following conditions
7 7 * are met:
8 8 * 1. Redistributions of source code must retain the above copyright
9 9 * notice, this list of conditions and the following disclaimer.
10 10 * 2. Redistributions in binary form must reproduce the above copyright
11 11 * notice, this list of conditions and the following disclaimer in the
12 12 * documentation and/or other materials provided with the distribution.
13 13 *
14 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 24 */
25 25
26 26 /*
27 27 * Part of the file derived from `Virtio PCI Card Specification v0.8.6 DRAFT'
28 28 * Appendix A.
29 29 */
30 30
31 31 /*
32 32 * An interface for efficient virtio implementation.
33 33 *
34 34 * This header is BSD licensed so anyone can use the definitions
35 35 * to implement compatible drivers/servers.
36 36 *
37 37 * Copyright 2007, 2009, IBM Corporation
38 38 * All rights reserved.
39 39 *
40 40 * Redistribution and use in source and binary forms, with or without
41 41 * modification, are permitted provided that the following conditions
42 42 * are met:
43 43 * 1. Redistributions of source code must retain the above copyright
44 44 * notice, this list of conditions and the following disclaimer.
45 45 * 2. Redistributions in binary form must reproduce the above copyright
46 46 * notice, this list of conditions and the following disclaimer in the
47 47 * documentation and/or other materials provided with the distribution.
48 48 * 3. Neither the name of IBM nor the names of its contributors
49 49 * may be used to endorse or promote products derived from this software
50 50 * without specific prior written permission.
51 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 52 * ``AS IS'' ANDANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
53 53 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
54 54 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
55 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 61 * SUCH DAMAGE.
62 62 */
63 63
64 64 /*
65 65 * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
66 66 */
67 67
68 68 #ifndef __VIRTIOVAR_H__
69 69 #define __VIRTIOVAR_H__
70 70
71 71 #include <sys/types.h>
72 72 #include <sys/dditypes.h>
73 73 #include <sys/cmn_err.h>
74 74 #include <sys/list.h>
75 75
76 76 #ifdef DEBUG
77 77 #define dev_debug(dip, fmt, arg...) \
78 78 dev_err(dip, fmt, ##arg)
79 79 #else
80 80 #define dev_debug(dip, fmt, arg...)
81 81 #endif
82 82
83 83 struct vq_entry {
84 84 list_node_t qe_list;
85 85 struct virtqueue *qe_queue;
86 86 uint16_t qe_index; /* index in vq_desc array */
87 87 /* followings are used only when it is the `head' entry */
88 88 struct vq_entry *qe_next;
89 89 struct vring_desc *qe_desc;
90 90 ddi_dma_cookie_t qe_indirect_dma_cookie;
91 91 ddi_dma_handle_t qe_indirect_dma_handle;
92 92 ddi_acc_handle_t qe_indirect_dma_acch;
93 93 struct vring_desc *qe_indirect_descs;
94 94 unsigned int qe_indirect_next;
95 95 };
96 96
97 97 struct virtqueue {
98 98 struct virtio_softc *vq_owner;
99 99 unsigned int vq_num; /* queue size (# of entries) */
100 100 unsigned int vq_indirect_num;
101 101 int vq_index; /* queue number (0, 1, ...) */
102 102
103 103 /* vring pointers (KVA) */
104 104 struct vring_desc *vq_descs;
105 105 struct vring_avail *vq_avail;
106 106 struct vring_used *vq_used;
107 107
108 108 /* virtqueue allocation info */
109 109 void *vq_vaddr;
110 110 int vq_availoffset;
111 111 int vq_usedoffset;
112 112 ddi_dma_cookie_t vq_dma_cookie;
113 113 ddi_dma_handle_t vq_dma_handle;
114 114 ddi_acc_handle_t vq_dma_acch;
115 115
116 116 int vq_maxsegsize;
117 117
118 118 /* free entry management */
119 119 struct vq_entry *vq_entries;
120 120 list_t vq_freelist;
121 121 kmutex_t vq_freelist_lock;
122 122 int vq_used_entries;
123 123
124 124 /* enqueue/dequeue status */
125 125 uint16_t vq_avail_idx;
126 126 kmutex_t vq_avail_lock;
127 127 uint16_t vq_used_idx;
128 128 kmutex_t vq_used_lock;
129 129 };
130 130
131 131 struct virtio_softc {
132 132 dev_info_t *sc_dev;
133 133
134 134 uint_t sc_intr_prio;
135 135
136 136 ddi_acc_handle_t sc_ioh;
137 137 caddr_t sc_io_addr;
138 138 int sc_config_offset;
139 139
140 140 uint32_t sc_features;
141 141
142 142 int sc_nvqs; /* set by the user */
143 143
144 144 ddi_intr_handle_t *sc_intr_htable;
145 145 int sc_intr_num;
146 146 boolean_t sc_intr_config;
147 147 int sc_intr_cap;
148 148 };
149 149
150 150 struct virtio_int_handler {
151 151 ddi_intr_handler_t *vh_func;
152 152 void *vh_priv;
153 153 };
154 154
155 155 /* public interface */
156 156 uint32_t virtio_negotiate_features(struct virtio_softc *, uint32_t);
157 157 size_t virtio_show_features(uint32_t features, char *buffer, size_t len);
158 158 boolean_t virtio_has_feature(struct virtio_softc *sc, uint32_t feature);
159 159 void virtio_set_status(struct virtio_softc *sc, unsigned int);
160 160 #define virtio_device_reset(sc) virtio_set_status((sc), 0)
161 161
162 162 uint8_t virtio_read_device_config_1(struct virtio_softc *sc,
163 163 unsigned int index);
164 164 uint16_t virtio_read_device_config_2(struct virtio_softc *sc,
165 165 unsigned int index);
166 166 uint32_t virtio_read_device_config_4(struct virtio_softc *sc,
167 167 unsigned int index);
168 168 uint64_t virtio_read_device_config_8(struct virtio_softc *sc,
169 169 unsigned int index);
170 170 void virtio_write_device_config_1(struct virtio_softc *sc,
171 171 unsigned int index, uint8_t value);
172 172 void virtio_write_device_config_2(struct virtio_softc *sc,
173 173 unsigned int index, uint16_t value);
174 174 void virtio_write_device_config_4(struct virtio_softc *sc,
175 175 unsigned int index, uint32_t value);
176 176 void virtio_write_device_config_8(struct virtio_softc *sc,
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177 177 unsigned int index, uint64_t value);
178 178
179 179 struct virtqueue *virtio_alloc_vq(struct virtio_softc *sc,
180 180 unsigned int index, unsigned int size,
181 181 unsigned int indirect_num, const char *name);
182 182 void virtio_free_vq(struct virtqueue *);
183 183 void virtio_reset(struct virtio_softc *);
184 184 struct vq_entry *vq_alloc_entry(struct virtqueue *vq);
185 185 void vq_free_entry(struct virtqueue *vq, struct vq_entry *qe);
186 186 uint_t vq_num_used(struct virtqueue *vq);
187 +unsigned int virtio_ve_indirect_available(struct vq_entry *qe);
187 188
188 189 void virtio_stop_vq_intr(struct virtqueue *);
189 190 void virtio_start_vq_intr(struct virtqueue *);
190 191
191 192 void virtio_ve_add_cookie(struct vq_entry *qe, ddi_dma_handle_t dma_handle,
192 193 ddi_dma_cookie_t dma_cookie, unsigned int ncookies, boolean_t write);
193 194 void virtio_ve_add_indirect_buf(struct vq_entry *qe, uint64_t paddr,
194 195 uint32_t len, boolean_t write);
195 196 void virtio_ve_set(struct vq_entry *qe, uint64_t paddr, uint32_t len,
196 197 boolean_t write);
197 198
198 199 void virtio_push_chain(struct vq_entry *qe, boolean_t sync);
199 200 struct vq_entry *virtio_pull_chain(struct virtqueue *vq, uint32_t *len);
200 201 void virtio_free_chain(struct vq_entry *ve);
201 202 void virtio_sync_vq(struct virtqueue *vq);
202 203
203 204 int virtio_register_ints(struct virtio_softc *sc,
204 205 struct virtio_int_handler *config_handler,
205 206 struct virtio_int_handler vq_handlers[]);
206 207 void virtio_release_ints(struct virtio_softc *sc);
207 208 int virtio_enable_ints(struct virtio_softc *sc);
208 209
209 210 #endif /* __VIRTIOVAR_H__ */
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