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gerrit.nordix.org / fdio / vpp / d4a547144ffc0f68538d5a89ce7d41cd739a33d2 / . / src / vnet / devices / virtio / virtio_pci_modern.h
blob: f6a8713984f5b7377f544d9f75af404b018fc04b [file] [log] [blame]
Mohsin Kazmi379aac32020-08-20 10:25:12 +0200[diff] [blame]1/*
2 * Copyright (c) 2020 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <vnet/devices/virtio/virtio.h>
17#include <vnet/devices/virtio/pci.h>
18
19/* common configuration */
20#define VIRTIO_FEATURE_SELECT_HI 1
21#define VIRTIO_FEATURE_SELECT_LO 0
22
23#define VIRTIO_DEVICE_FEATURE_SELECT_OFFSET(v) \
24 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
25 device_feature_select))
26#define VIRTIO_DEVICE_FEATURE_OFFSET(v) \
27 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
28 device_feature))
29#define VIRTIO_DRIVER_FEATURE_SELECT_OFFSET(v) \
30 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
31 driver_feature_select))
32#define VIRTIO_DRIVER_FEATURE_OFFSET(v) \
33 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
34 driver_feature))
35#define VIRTIO_MSIX_CONFIG_VECTOR_OFFSET(v) \
36 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
37 msix_config))
38#define VIRTIO_NUM_QUEUES_OFFSET(v) \
39 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
40 num_queues))
41#define VIRTIO_DEVICE_STATUS_OFFSET(v) \
42 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
43 device_status))
44#define VIRTIO_CONFIG_GENERATION_OFFSET(v) \
45 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
46 config_generation))
47#define VIRTIO_QUEUE_SELECT_OFFSET(v) \
48 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
49 queue_select))
50#define VIRTIO_QUEUE_SIZE_OFFSET(v) \
51 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
52 queue_size))
53#define VIRTIO_QUEUE_MSIX_VECTOR_OFFSET(v) \
54 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
55 queue_msix_vector))
56#define VIRTIO_QUEUE_ENABLE_OFFSET(v) \
57 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
58 queue_enable))
59#define VIRTIO_QUEUE_NOTIFY_OFF_OFFSET(v) \
60 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
61 queue_notify_off))
62#define VIRTIO_QUEUE_DESC_OFFSET(v) \
63 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
64 queue_desc))
65#define VIRTIO_QUEUE_DRIVER_OFFSET(v) \
66 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
67 queue_driver))
68#define VIRTIO_QUEUE_DEVICE_OFFSET(v) \
69 (v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
70 queue_device))
71/* device configuration */
72#define VIRTIO_MAC_OFFSET(v) \
73 (v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
74 mac))
75#define VIRTIO_STATUS_OFFSET(v) \
76 (v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
77 status))
78#define VIRTIO_MAX_VIRTQUEUE_PAIRS_OFFSET(v) \
79 (v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
80 max_virtqueue_pairs))
81#define VIRTIO_MTU_OFFSET(v) \
82 (v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
83 mtu))
84/* interrupt service routine */
85#define VIRTIO_ISR_OFFSET(v) (v->isr_offset)
86/* notification */
87#define VIRTIO_NOTIFICATION_OFFSET(v) (v->notify_offset)
88
89#define _(t) \
90static_always_inline t \
91virtio_pci_reg_read_##t (virtio_if_t * vif, u32 offset) \
92{ \
93 t val; \
94 val = *(volatile t *) (vif->bar + offset); \
95 return val; \
96}
97
98_(u64);
99_(u32);
100_(u16);
101_(u8);
102
103#undef _
104
105#define _(t) \
106static_always_inline void \
107virtio_pci_reg_write_##t (virtio_if_t * vif, u32 offset, t val) \
108{ \
109 *(volatile t *) ((u8 *) vif->bar + offset) = val; \
110}
111
112_(u64);
113_(u32);
114_(u16);
115_(u8);
116
117#undef _
118
119/*
120 * fd.io coding-style-patch-verification: ON
121 *
122 * Local Variables:
123 * eval: (c-set-style "gnu")
124 * End:
125 */