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11#include "qemu/osdep.h"
12#include "libqtest.h"
13#include "qemu/module.h"
14#include "scsi/constants.h"
15#include "libqos/libqos-pc.h"
16#include "libqos/libqos-spapr.h"
17#include "libqos/virtio.h"
18#include "libqos/virtio-pci.h"
19#include "standard-headers/linux/virtio_ids.h"
20#include "standard-headers/linux/virtio_pci.h"
21#include "standard-headers/linux/virtio_scsi.h"
22#include "libqos/virtio-scsi.h"
23#include "libqos/qgraph.h"
24
25#define PCI_SLOT 0x02
26#define PCI_FN 0x00
27#define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
28
29#define MAX_NUM_QUEUES 64
30
31typedef struct {
32 QVirtioDevice *dev;
33 int num_queues;
34 QVirtQueue *vq[MAX_NUM_QUEUES + 2];
35} QVirtioSCSIQueues;
36
37static QGuestAllocator *alloc;
38
39static void qvirtio_scsi_pci_free(QVirtioSCSIQueues *vs)
40{
41 int i;
42
43 for (i = 0; i < vs->num_queues + 2; i++) {
44 qvirtqueue_cleanup(vs->dev->bus, vs->vq[i], alloc);
45 }
46 g_free(vs);
47}
48
49static uint64_t qvirtio_scsi_alloc(QVirtioSCSIQueues *vs, size_t alloc_size,
50 const void *data)
51{
52 uint64_t addr;
53
54 addr = guest_alloc(alloc, alloc_size);
55 if (data) {
56 memwrite(addr, data, alloc_size);
57 }
58
59 return addr;
60}
61
62static uint8_t virtio_scsi_do_command(QVirtioSCSIQueues *vs,
63 const uint8_t *cdb,
64 const uint8_t *data_in,
65 size_t data_in_len,
66 uint8_t *data_out, size_t data_out_len,
67 struct virtio_scsi_cmd_resp *resp_out)
68{
69 QVirtQueue *vq;
70 struct virtio_scsi_cmd_req req = { { 0 } };
71 struct virtio_scsi_cmd_resp resp = { .response = 0xff, .status = 0xff };
72 uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
73 uint8_t response;
74 uint32_t free_head;
75
76 vq = vs->vq[2];
77
78 req.lun[0] = 1;
79 req.lun[1] = 1;
80 memcpy(req.cdb, cdb, VIRTIO_SCSI_CDB_SIZE);
81
82
83
84
85 req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
86 free_head = qvirtqueue_add(vq, req_addr, sizeof(req), false, true);
87
88 if (data_out_len) {
89 data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
90 qvirtqueue_add(vq, data_out_addr, data_out_len, false, true);
91 }
92
93
94 resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
95 qvirtqueue_add(vq, resp_addr, sizeof(resp), true, !!data_in_len);
96
97 if (data_in_len) {
98 data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
99 qvirtqueue_add(vq, data_in_addr, data_in_len, true, false);
100 }
101
102 qvirtqueue_kick(vs->dev, vq, free_head);
103 qvirtio_wait_used_elem(vs->dev, vq, free_head, NULL,
104 QVIRTIO_SCSI_TIMEOUT_US);
105
106 response = readb(resp_addr +
107 offsetof(struct virtio_scsi_cmd_resp, response));
108
109 if (resp_out) {
110 memread(resp_addr, resp_out, sizeof(*resp_out));
111 }
112
113 guest_free(alloc, req_addr);
114 guest_free(alloc, resp_addr);
115 guest_free(alloc, data_in_addr);
116 guest_free(alloc, data_out_addr);
117 return response;
118}
119
120static QVirtioSCSIQueues *qvirtio_scsi_init(QVirtioDevice *dev)
121{
122 QVirtioSCSIQueues *vs;
123 const uint8_t test_unit_ready_cdb[VIRTIO_SCSI_CDB_SIZE] = {};
124 struct virtio_scsi_cmd_resp resp;
125 int i;
126
127 vs = g_new0(QVirtioSCSIQueues, 1);
128 vs->dev = dev;
129 vs->num_queues = qvirtio_config_readl(dev, 0);
130
131 g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
132
133 for (i = 0; i < vs->num_queues + 2; i++) {
134 vs->vq[i] = qvirtqueue_setup(dev, alloc, i);
135 }
136
137
138 g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
139 NULL, 0, NULL, 0, &resp),
140 ==, 0);
141 g_assert_cmpint(resp.status, ==, CHECK_CONDITION);
142 g_assert_cmpint(resp.sense[0], ==, 0x70);
143 g_assert_cmpint(resp.sense[2], ==, UNIT_ATTENTION);
144 g_assert_cmpint(resp.sense[12], ==, 0x29);
145 g_assert_cmpint(resp.sense[13], ==, 0x00);
146
147 return vs;
148}
149
150static void hotplug(void *obj, void *data, QGuestAllocator *alloc)
151{
152 qtest_qmp_device_add("scsi-hd", "scsihd", "{'drive': 'drv1'}");
153 qtest_qmp_device_del("scsihd");
154}
155
156
157static void test_unaligned_write_same(void *obj, void *data,
158 QGuestAllocator *t_alloc)
159{
160 QVirtioSCSI *scsi = obj;
161 QVirtioSCSIQueues *vs;
162 uint8_t buf1[512] = { 0 };
163 uint8_t buf2[512] = { 1 };
164 const uint8_t write_same_cdb_1[VIRTIO_SCSI_CDB_SIZE] = {
165 0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00
166 };
167 const uint8_t write_same_cdb_2[VIRTIO_SCSI_CDB_SIZE] = {
168 0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
169 };
170 const uint8_t write_same_cdb_ndob[VIRTIO_SCSI_CDB_SIZE] = {
171 0x41, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
172 };
173
174 alloc = t_alloc;
175 vs = qvirtio_scsi_init(scsi->vdev);
176
177 g_assert_cmphex(0, ==,
178 virtio_scsi_do_command(vs, write_same_cdb_1, NULL, 0, buf1, 512,
179 NULL));
180
181 g_assert_cmphex(0, ==,
182 virtio_scsi_do_command(vs, write_same_cdb_2, NULL, 0, buf2, 512,
183 NULL));
184
185 g_assert_cmphex(0, ==,
186 virtio_scsi_do_command(vs, write_same_cdb_ndob, NULL, 0, NULL, 0,
187 NULL));
188
189 qvirtio_scsi_pci_free(vs);
190}
191
192static void test_iothread_attach_node(void *obj, void *data,
193 QGuestAllocator *t_alloc)
194{
195 QVirtioSCSIPCI *scsi_pci = obj;
196 QVirtioSCSI *scsi = &scsi_pci->scsi;
197 QVirtioSCSIQueues *vs;
198 char tmp_path[] = "/tmp/qtest.XXXXXX";
199 int fd;
200 int ret;
201
202 uint8_t buf[512] = { 0 };
203 const uint8_t write_cdb[VIRTIO_SCSI_CDB_SIZE] = {
204
205 0x2a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00
206 };
207
208 alloc = t_alloc;
209 vs = qvirtio_scsi_init(scsi->vdev);
210
211
212 fd = mkstemp(tmp_path);
213 g_assert(fd >= 0);
214 close(fd);
215
216 if (!have_qemu_img()) {
217 g_test_message("QTEST_QEMU_IMG not set or qemu-img missing; "
218 "skipping snapshot test");
219 goto fail;
220 }
221
222 mkqcow2(tmp_path, 64);
223
224
225 qmp_assert_success("{'execute': 'blockdev-add', 'arguments': {"
226 " 'driver': 'qcow2', 'node-name': 'overlay',"
227 " 'backing': 'null0', 'file': {"
228 " 'driver': 'file', 'filename': %s}}}", tmp_path);
229
230
231 ret = virtio_scsi_do_command(vs, write_cdb, NULL, 0, buf, 512, NULL);
232 g_assert_cmphex(ret, ==, 0);
233
234fail:
235 qvirtio_scsi_pci_free(vs);
236 unlink(tmp_path);
237}
238
239static void *virtio_scsi_hotplug_setup(GString *cmd_line, void *arg)
240{
241 g_string_append(cmd_line,
242 " -drive id=drv1,if=none,file=null-co://,format=raw");
243 return arg;
244}
245
246static void *virtio_scsi_setup(GString *cmd_line, void *arg)
247{
248 g_string_append(cmd_line,
249 " -drive file=blkdebug::null-co://,"
250 "if=none,id=dr1,format=raw,file.align=4k "
251 "-device scsi-hd,drive=dr1,lun=0,scsi-id=1");
252 return arg;
253}
254
255static void *virtio_scsi_setup_iothread(GString *cmd_line, void *arg)
256{
257 g_string_append(cmd_line,
258 " -object iothread,id=thread0"
259 " -blockdev driver=null-co,node-name=null0"
260 " -device scsi-hd,drive=null0");
261 return arg;
262}
263
264static void register_virtio_scsi_test(void)
265{
266 QOSGraphTestOptions opts = { };
267
268 opts.before = virtio_scsi_hotplug_setup;
269 qos_add_test("hotplug", "virtio-scsi", hotplug, &opts);
270
271 opts.before = virtio_scsi_setup;
272 qos_add_test("unaligned-write-same", "virtio-scsi",
273 test_unaligned_write_same, &opts);
274
275 opts.before = virtio_scsi_setup_iothread;
276 opts.edge = (QOSGraphEdgeOptions) {
277 .extra_device_opts = "iothread=thread0",
278 };
279 qos_add_test("iothread-attach-node", "virtio-scsi-pci",
280 test_iothread_attach_node, &opts);
281}
282
283libqos_init(register_virtio_scsi_test);
284
