1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
*/
#include <common.h>
#include <dm.h>
#include <virtio_types.h>
#include <virtio.h>
#include <virtio_ring.h>
#include <dm/device-internal.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/uclass-internal.h>
#include <test/test.h>
#include <test/ut.h>
/* Basic test of the virtio uclass */
static int dm_test_virtio_base(struct unit_test_state *uts)
{
struct udevice *bus, *dev;
u8 status;
/* check probe success */
ut_assertok(uclass_first_device_err(UCLASS_VIRTIO, &bus));
ut_assertnonnull(bus);
/* check the child virtio-rng device is bound */
ut_assertok(device_find_first_child(bus, &dev));
ut_assertnonnull(dev);
ut_asserteq_str("virtio-rng#0", dev->name);
/* check driver status */
ut_assertok(virtio_get_status(dev, &status));
ut_asserteq(VIRTIO_CONFIG_S_ACKNOWLEDGE, status);
/* probe the virtio-rng driver */
ut_assertok(device_probe(dev));
/* check the device was reset and the driver picked up the device */
ut_assertok(virtio_get_status(dev, &status));
ut_asserteq(VIRTIO_CONFIG_S_DRIVER |
VIRTIO_CONFIG_S_DRIVER_OK |
VIRTIO_CONFIG_S_FEATURES_OK, status);
return 0;
}
DM_TEST(dm_test_virtio_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test all of the virtio uclass ops */
static int dm_test_virtio_all_ops(struct unit_test_state *uts)
{
struct udevice *bus, *dev;
struct virtio_dev_priv *uc_priv;
uint offset = 0, len = 0, nvqs = 1;
void *buffer = NULL;
u8 status;
u32 counter;
u64 features;
struct virtqueue *vqs[2];
/* check probe success */
ut_assertok(uclass_first_device_err(UCLASS_VIRTIO, &bus));
ut_assertnonnull(bus);
/* check the child virtio-rng device is bound */
ut_assertok(device_find_first_child(bus, &dev));
ut_assertnonnull(dev);
/*
* fake the virtio device probe by filling in uc_priv->vdev
* which is used by virtio_find_vqs/virtio_del_vqs.
*/
uc_priv = dev_get_uclass_priv(bus);
ut_assertnonnull(uc_priv);
uc_priv->vdev = dev;
/* test virtio_xxx APIs */
ut_assertok(virtio_get_config(dev, offset, buffer, len));
ut_assertok(virtio_set_config(dev, offset, buffer, len));
ut_asserteq(-ENOSYS, virtio_generation(dev, &counter));
ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
ut_assertok(virtio_get_status(dev, &status));
ut_asserteq(VIRTIO_CONFIG_S_DRIVER_OK, status);
ut_assertok(virtio_reset(dev));
ut_assertok(virtio_get_status(dev, &status));
ut_asserteq(0, status);
ut_assertok(virtio_get_features(dev, &features));
ut_asserteq_64(BIT_ULL(VIRTIO_F_VERSION_1), features);
ut_assertok(virtio_set_features(dev));
ut_assertok(virtio_find_vqs(dev, nvqs, vqs));
ut_assertok(virtio_notify(dev, vqs[0]));
ut_assertok(virtio_del_vqs(dev));
return 0;
}
DM_TEST(dm_test_virtio_all_ops, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test removal of virtio device driver */
static int dm_test_virtio_remove(struct unit_test_state *uts)
{
struct udevice *bus, *dev;
u8 status;
/* check probe success */
ut_assertok(uclass_first_device_err(UCLASS_VIRTIO, &bus));
ut_assertnonnull(bus);
/* check the child virtio-rng device is bound */
ut_assertok(device_find_first_child(bus, &dev));
ut_assertnonnull(dev);
/* set driver status to VIRTIO_CONFIG_S_DRIVER_OK */
ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
/* check the device can be successfully removed */
dev_or_flags(dev, DM_FLAG_ACTIVATED);
ut_asserteq(-EKEYREJECTED, device_remove(bus, DM_REMOVE_ACTIVE_ALL));
ut_asserteq(false, device_active(dev));
virtio_get_status(dev, &status);
ut_assertok(status);
return 0;
}
DM_TEST(dm_test_virtio_remove, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test all of the virtio ring */
static int dm_test_virtio_ring(struct unit_test_state *uts)
{
struct udevice *bus, *dev;
struct virtio_dev_priv *uc_priv;
struct virtqueue *vq;
struct virtio_sg sg[2];
struct virtio_sg *sgs[2];
unsigned int len;
u8 buffer[2][32];
/* check probe success */
ut_assertok(uclass_first_device_err(UCLASS_VIRTIO, &bus));
ut_assertnonnull(bus);
/* check the child virtio-blk device is bound */
ut_assertok(device_find_first_child(bus, &dev));
ut_assertnonnull(dev);
/*
* fake the virtio device probe by filling in uc_priv->vdev
* which is used by virtio_find_vqs/virtio_del_vqs.
*/
uc_priv = dev_get_uclass_priv(bus);
ut_assertnonnull(uc_priv);
uc_priv->vdev = dev;
/* prepare the scatter-gather buffer */
sg[0].addr = buffer[0];
sg[0].length = sizeof(buffer[0]);
sg[1].addr = buffer[1];
sg[1].length = sizeof(buffer[1]);
sgs[0] = &sg[0];
sgs[1] = &sg[1];
/* read a buffer and report written size from device */
ut_assertok(virtio_find_vqs(dev, 1, &vq));
ut_assertok(virtqueue_add(vq, sgs, 0, 1));
vq->vring.used->idx = 1;
vq->vring.used->ring[0].id = 0;
vq->vring.used->ring[0].len = 0x53355885;
ut_asserteq_ptr(buffer, virtqueue_get_buf(vq, &len));
ut_asserteq(0x53355885, len);
ut_assertok(virtio_del_vqs(dev));
/* rejects used descriptors that aren't a chain head */
ut_assertok(virtio_find_vqs(dev, 1, &vq));
ut_assertok(virtqueue_add(vq, sgs, 0, 2));
vq->vring.used->idx = 1;
vq->vring.used->ring[0].id = 1;
vq->vring.used->ring[0].len = 0x53355885;
ut_assertnull(virtqueue_get_buf(vq, &len));
ut_assertok(virtio_del_vqs(dev));
/* device changes to descriptor are ignored */
ut_assertok(virtio_find_vqs(dev, 1, &vq));
ut_assertok(virtqueue_add(vq, sgs, 0, 1));
vq->vring.desc[0].addr = cpu_to_virtio64(dev, 0xbadbad11);
vq->vring.desc[0].len = cpu_to_virtio32(dev, 0x11badbad);
vq->vring.desc[0].flags = cpu_to_virtio16(dev, VRING_DESC_F_NEXT);
vq->vring.desc[0].next = cpu_to_virtio16(dev, U16_MAX);
vq->vring.used->idx = 1;
vq->vring.used->ring[0].id = 0;
vq->vring.used->ring[0].len = 6;
ut_asserteq_ptr(buffer, virtqueue_get_buf(vq, &len));
ut_asserteq(6, len);
ut_assertok(virtio_del_vqs(dev));
return 0;
}
DM_TEST(dm_test_virtio_ring, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
|