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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*
* QTest testcase for VirtIO SCSI
*
* Copyright (c) 2014 SUSE LINUX Products GmbH
* Copyright (c) 2015 Red Hat Inc.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "libqtest.h"
#include "scsi/constants.h"
#include "libqos/libqos-pc.h"
#include "libqos/libqos-spapr.h"
#include "libqos/virtio.h"
#include "libqos/virtio-pci.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/virtio_pci.h"
#include "standard-headers/linux/virtio_scsi.h"
#define PCI_SLOT 0x02
#define PCI_FN 0x00
#define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
#define MAX_NUM_QUEUES 64
typedef struct {
QVirtioDevice *dev;
QOSState *qs;
int num_queues;
QVirtQueue *vq[MAX_NUM_QUEUES + 2];
} QVirtIOSCSI;
static QOSState *qvirtio_scsi_start(const char *extra_opts)
{
const char *arch = qtest_get_arch();
const char *cmd = "-drive id=drv0,if=none,file=null-co://,format=raw "
"-device virtio-scsi-pci,id=vs0 "
"-device scsi-hd,bus=vs0.0,drive=drv0 %s";
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
return qtest_pc_boot(cmd, extra_opts ? : "");
}
if (strcmp(arch, "ppc64") == 0) {
return qtest_spapr_boot(cmd, extra_opts ? : "");
}
g_printerr("virtio-scsi tests are only available on x86 or ppc64\n");
exit(EXIT_FAILURE);
}
static void qvirtio_scsi_stop(QOSState *qs)
{
qtest_shutdown(qs);
}
static void qvirtio_scsi_pci_free(QVirtIOSCSI *vs)
{
int i;
for (i = 0; i < vs->num_queues + 2; i++) {
qvirtqueue_cleanup(vs->dev->bus, vs->vq[i], vs->qs->alloc);
}
qvirtio_pci_device_disable(container_of(vs->dev, QVirtioPCIDevice, vdev));
qvirtio_pci_device_free((QVirtioPCIDevice *)vs->dev);
qvirtio_scsi_stop(vs->qs);
g_free(vs);
}
static uint64_t qvirtio_scsi_alloc(QVirtIOSCSI *vs, size_t alloc_size,
const void *data)
{
uint64_t addr;
addr = guest_alloc(vs->qs->alloc, alloc_size);
if (data) {
memwrite(addr, data, alloc_size);
}
return addr;
}
static uint8_t virtio_scsi_do_command(QVirtIOSCSI *vs, const uint8_t *cdb,
const uint8_t *data_in,
size_t data_in_len,
uint8_t *data_out, size_t data_out_len,
struct virtio_scsi_cmd_resp *resp_out)
{
QVirtQueue *vq;
struct virtio_scsi_cmd_req req = { { 0 } };
struct virtio_scsi_cmd_resp resp = { .response = 0xff, .status = 0xff };
uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
uint8_t response;
uint32_t free_head;
vq = vs->vq[2];
req.lun[0] = 1; /* Select LUN */
req.lun[1] = 1; /* Select target 1 */
memcpy(req.cdb, cdb, VIRTIO_SCSI_CDB_SIZE);
/* XXX: Fix endian if any multi-byte field in req/resp is used */
/* Add request header */
req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
free_head = qvirtqueue_add(vq, req_addr, sizeof(req), false, true);
if (data_out_len) {
data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
qvirtqueue_add(vq, data_out_addr, data_out_len, false, true);
}
/* Add response header */
resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
qvirtqueue_add(vq, resp_addr, sizeof(resp), true, !!data_in_len);
if (data_in_len) {
data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
qvirtqueue_add(vq, data_in_addr, data_in_len, true, false);
}
qvirtqueue_kick(vs->dev, vq, free_head);
qvirtio_wait_used_elem(vs->dev, vq, free_head, NULL,
QVIRTIO_SCSI_TIMEOUT_US);
response = readb(resp_addr +
offsetof(struct virtio_scsi_cmd_resp, response));
if (resp_out) {
memread(resp_addr, resp_out, sizeof(*resp_out));
}
guest_free(vs->qs->alloc, req_addr);
guest_free(vs->qs->alloc, resp_addr);
guest_free(vs->qs->alloc, data_in_addr);
guest_free(vs->qs->alloc, data_out_addr);
return response;
}
static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
{
const uint8_t test_unit_ready_cdb[VIRTIO_SCSI_CDB_SIZE] = {};
QVirtIOSCSI *vs;
QVirtioPCIDevice *dev;
struct virtio_scsi_cmd_resp resp;
int i;
vs = g_new0(QVirtIOSCSI, 1);
vs->qs = qvirtio_scsi_start("-drive file=blkdebug::null-co://,"
"if=none,id=dr1,format=raw,file.align=4k "
"-device scsi-hd,drive=dr1,lun=0,scsi-id=1");
dev = qvirtio_pci_device_find(vs->qs->pcibus, VIRTIO_ID_SCSI);
vs->dev = (QVirtioDevice *)dev;
g_assert(dev != NULL);
g_assert_cmphex(vs->dev->device_type, ==, VIRTIO_ID_SCSI);
qvirtio_pci_device_enable(dev);
qvirtio_reset(vs->dev);
qvirtio_set_acknowledge(vs->dev);
qvirtio_set_driver(vs->dev);
vs->num_queues = qvirtio_config_readl(vs->dev, 0);
g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
for (i = 0; i < vs->num_queues + 2; i++) {
vs->vq[i] = qvirtqueue_setup(vs->dev, vs->qs->alloc, i);
}
/* Clear the POWER ON OCCURRED unit attention */
g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
NULL, 0, NULL, 0, &resp),
==, 0);
g_assert_cmpint(resp.status, ==, CHECK_CONDITION);
g_assert_cmpint(resp.sense[0], ==, 0x70); /* Fixed format sense buffer */
g_assert_cmpint(resp.sense[2], ==, UNIT_ATTENTION);
g_assert_cmpint(resp.sense[12], ==, 0x29); /* POWER ON */
g_assert_cmpint(resp.sense[13], ==, 0x00);
return vs;
}
/* Tests only initialization so far. TODO: Replace with functional tests */
static void pci_nop(void)
{
QOSState *qs;
qs = qvirtio_scsi_start(NULL);
qvirtio_scsi_stop(qs);
}
static void hotplug(void)
{
QOSState *qs;
qs = qvirtio_scsi_start(
"-drive id=drv1,if=none,file=null-co://,format=raw");
qtest_qmp_device_add("scsi-hd", "scsihd", "'drive': 'drv1'");
qtest_qmp_device_del("scsihd");
qvirtio_scsi_stop(qs);
}
/* Test WRITE SAME with the lba not aligned */
static void test_unaligned_write_same(void)
{
QVirtIOSCSI *vs;
uint8_t buf1[512] = { 0 };
uint8_t buf2[512] = { 1 };
const uint8_t write_same_cdb_1[VIRTIO_SCSI_CDB_SIZE] = {
0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00
};
const uint8_t write_same_cdb_2[VIRTIO_SCSI_CDB_SIZE] = {
0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
};
vs = qvirtio_scsi_pci_init(PCI_SLOT);
g_assert_cmphex(0, ==,
virtio_scsi_do_command(vs, write_same_cdb_1, NULL, 0, buf1, 512, NULL));
g_assert_cmphex(0, ==,
virtio_scsi_do_command(vs, write_same_cdb_2, NULL, 0, buf2, 512, NULL));
qvirtio_scsi_pci_free(vs);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
qtest_add_func("/virtio/scsi/pci/nop", pci_nop);
qtest_add_func("/virtio/scsi/pci/hotplug", hotplug);
qtest_add_func("/virtio/scsi/pci/scsi-disk/unaligned-write-same",
test_unaligned_write_same);
return g_test_run();
}
|
