summaryrefslogtreecommitdiff
path: root/tests/virtio-scsi-test.c
blob: 66d8491e9dfcb5c3bd6d5d4798b1622d1231653d (plain)
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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
/*
 * 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 <glib.h>
#include <string.h>
#include "libqtest.h"
#include "qemu/osdep.h"
#include <stdio.h>
#include "block/scsi.h"
#include "libqos/virtio.h"
#include "libqos/virtio-pci.h"
#include "libqos/pci-pc.h"
#include "libqos/malloc.h"
#include "libqos/malloc-pc.h"
#include "libqos/malloc-generic.h"

#define PCI_SLOT                0x02
#define PCI_FN                  0x00
#define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
#define CDB_SIZE 32

#define MAX_NUM_QUEUES 64

typedef struct {
    QVirtioDevice *dev;
    QGuestAllocator *alloc;
    QPCIBus *bus;
    int num_queues;
    QVirtQueue *vq[MAX_NUM_QUEUES + 2];
} QVirtIOSCSI;

typedef struct {
    uint8_t lun[8];
    int64_t tag;
    uint8_t task_attr;
    uint8_t prio;
    uint8_t crn;
    uint8_t cdb[CDB_SIZE];
} QEMU_PACKED QVirtIOSCSICmdReq;

typedef struct {
    uint32_t sense_len;
    uint32_t resid;
    uint16_t status_qualifier;
    uint8_t status;
    uint8_t response;
    uint8_t sense[96];
} QEMU_PACKED QVirtIOSCSICmdResp;

static void qvirtio_scsi_start(const char *extra_opts)
{
    char *cmdline;

    cmdline = g_strdup_printf(
                "-drive id=drv0,if=none,file=/dev/null,format=raw "
                "-device virtio-scsi-pci,id=vs0 "
                "-device scsi-hd,bus=vs0.0,drive=drv0 %s",
                extra_opts ? : "");
    qtest_start(cmdline);
    g_free(cmdline);
}

static void qvirtio_scsi_stop(void)
{
    qtest_end();
}

static void qvirtio_scsi_pci_free(QVirtIOSCSI *vs)
{
    int i;

    for (i = 0; i < vs->num_queues + 2; i++) {
        guest_free(vs->alloc, vs->vq[i]->desc);
    }
    pc_alloc_uninit(vs->alloc);
    qvirtio_pci_device_disable(container_of(vs->dev, QVirtioPCIDevice, vdev));
    g_free(vs->dev);
    qpci_free_pc(vs->bus);
}

static uint64_t qvirtio_scsi_alloc(QVirtIOSCSI *vs, size_t alloc_size,
                                   const void *data)
{
    uint64_t addr;

    addr = guest_alloc(vs->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,
                                      QVirtIOSCSICmdResp *resp_out)
{
    QVirtQueue *vq;
    QVirtIOSCSICmdReq req = { { 0 } };
    QVirtIOSCSICmdResp 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, 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(&qvirtio_pci, vs->dev, vq, free_head);
    qvirtio_wait_queue_isr(&qvirtio_pci, vs->dev, vq, QVIRTIO_SCSI_TIMEOUT_US);

    response = readb(resp_addr + offsetof(QVirtIOSCSICmdResp, response));

    if (resp_out) {
        memread(resp_addr, resp_out, sizeof(*resp_out));
    }

    guest_free(vs->alloc, req_addr);
    guest_free(vs->alloc, resp_addr);
    guest_free(vs->alloc, data_in_addr);
    guest_free(vs->alloc, data_out_addr);
    return response;
}

static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
{
    const uint8_t test_unit_ready_cdb[CDB_SIZE] = {};
    QVirtIOSCSI *vs;
    QVirtioPCIDevice *dev;
    QVirtIOSCSICmdResp resp;
    void *addr;
    int i;

    vs = g_new0(QVirtIOSCSI, 1);
    vs->alloc = pc_alloc_init();
    vs->bus = qpci_init_pc();

    dev = qvirtio_pci_device_find(vs->bus, QVIRTIO_SCSI_DEVICE_ID);
    vs->dev = (QVirtioDevice *)dev;
    g_assert(dev != NULL);
    g_assert_cmphex(vs->dev->device_type, ==, QVIRTIO_SCSI_DEVICE_ID);

    qvirtio_pci_device_enable(dev);
    qvirtio_reset(&qvirtio_pci, vs->dev);
    qvirtio_set_acknowledge(&qvirtio_pci, vs->dev);
    qvirtio_set_driver(&qvirtio_pci, vs->dev);

    addr = dev->addr + QVIRTIO_PCI_DEVICE_SPECIFIC_NO_MSIX;
    vs->num_queues = qvirtio_config_readl(&qvirtio_pci, vs->dev,
                                          (uint64_t)(uintptr_t)addr);

    g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);

    for (i = 0; i < vs->num_queues + 2; i++) {
        vs->vq[i] = qvirtqueue_setup(&qvirtio_pci, vs->dev, vs->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)
{
    qvirtio_scsi_start(NULL);
    qvirtio_scsi_stop();
}

static void hotplug(void)
{
    QDict *response;

    qvirtio_scsi_start("-drive id=drv1,if=none,file=/dev/null,format=raw");
    response = qmp("{\"execute\": \"device_add\","
                   " \"arguments\": {"
                   "   \"driver\": \"scsi-hd\","
                   "   \"id\": \"scsi-hd\","
                   "   \"drive\": \"drv1\""
                   "}}");

    g_assert(response);
    g_assert(!qdict_haskey(response, "error"));
    QDECREF(response);

    response = qmp("{\"execute\": \"device_del\","
                   " \"arguments\": {"
                   "   \"id\": \"scsi-hd\""
                   "}}");

    g_assert(response);
    g_assert(!qdict_haskey(response, "error"));
    g_assert(qdict_haskey(response, "event"));
    g_assert(!strcmp(qdict_get_str(response, "event"), "DEVICE_DELETED"));
    QDECREF(response);
    qvirtio_scsi_stop();
}

/* 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[CDB_SIZE] = { 0x41, 0x00, 0x00, 0x00, 0x00,
                                               0x01, 0x00, 0x00, 0x02, 0x00 };
    const uint8_t write_same_cdb_2[CDB_SIZE] = { 0x41, 0x00, 0x00, 0x00, 0x00,
                                               0x01, 0x00, 0x33, 0x00, 0x00 };

    qvirtio_scsi_start("-drive file=blkdebug::null-co://,if=none,id=dr1"
                       ",format=raw,file.align=4k "
                       "-device scsi-disk,drive=dr1,lun=0,scsi-id=1");
    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);
    qvirtio_scsi_stop();
}

int main(int argc, char **argv)
{
    int ret;

    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);

    ret = g_test_run();

    return ret;
}