tests/virtio-scsi-test.c

   1 /*
   2  * QTest testcase for VirtIO SCSI
   3  *
   4  * Copyright (c) 2014 SUSE LINUX Products GmbH
   5  * Copyright (c) 2015 Red Hat Inc.
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   8  * See the COPYING file in the top-level directory.
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include <glib.h>
  13 #include "libqtest.h"
  14 #include "block/scsi.h"
  15 #include "libqos/virtio.h"
  16 #include "libqos/virtio-pci.h"
  17 #include "libqos/pci-pc.h"
  18 #include "libqos/malloc.h"
  19 #include "libqos/malloc-pc.h"
  20 #include "libqos/malloc-generic.h"
  21
  22 #define PCI_SLOT                0x02
  23 #define PCI_FN                  0x00
  24 #define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
  25 #define CDB_SIZE 32
  26
  27 #define MAX_NUM_QUEUES 64
  28
  29 typedef struct {
  30     QVirtioDevice *dev;
  31     QGuestAllocator *alloc;
  32     QPCIBus *bus;
  33     int num_queues;
  34     QVirtQueue *vq[MAX_NUM_QUEUES + 2];
  35 } QVirtIOSCSI;
  36
  37 typedef struct {
  38     uint8_t lun[8];
  39     int64_t tag;
  40     uint8_t task_attr;
  41     uint8_t prio;
  42     uint8_t crn;
  43     uint8_t cdb[CDB_SIZE];
  44 } QEMU_PACKED QVirtIOSCSICmdReq;
  45
  46 typedef struct {
  47     uint32_t sense_len;
  48     uint32_t resid;
  49     uint16_t status_qualifier;
  50     uint8_t status;
  51     uint8_t response;
  52     uint8_t sense[96];
  53 } QEMU_PACKED QVirtIOSCSICmdResp;
  54
  55 static void qvirtio_scsi_start(const char *extra_opts)
  56 {
  57     char *cmdline;
  58
  59     cmdline = g_strdup_printf(
  60                 "-drive id=drv0,if=none,file=/dev/null,format=raw "
  61                 "-device virtio-scsi-pci,id=vs0 "
  62                 "-device scsi-hd,bus=vs0.0,drive=drv0 %s",
  63                 extra_opts ? : "");
  64     qtest_start(cmdline);
  65     g_free(cmdline);
  66 }
  67
  68 static void qvirtio_scsi_stop(void)
  69 {
  70     qtest_end();
  71 }
  72
  73 static void qvirtio_scsi_pci_free(QVirtIOSCSI *vs)
  74 {
  75     int i;
  76
  77     for (i = 0; i < vs->num_queues + 2; i++) {
  78         guest_free(vs->alloc, vs->vq[i]->desc);
  79     }
  80     pc_alloc_uninit(vs->alloc);
  81     qvirtio_pci_device_disable(container_of(vs->dev, QVirtioPCIDevice, vdev));
  82     g_free(vs->dev);
  83     qpci_free_pc(vs->bus);
  84 }
  85
  86 static uint64_t qvirtio_scsi_alloc(QVirtIOSCSI *vs, size_t alloc_size,
  87                                    const void *data)
  88 {
  89     uint64_t addr;
  90
  91     addr = guest_alloc(vs->alloc, alloc_size);
  92     if (data) {
  93         memwrite(addr, data, alloc_size);
  94     }
  95
  96     return addr;
  97 }
  98
  99 static uint8_t virtio_scsi_do_command(QVirtIOSCSI *vs, const uint8_t *cdb,
 100                                       const uint8_t *data_in,
 101                                       size_t data_in_len,
 102                                       uint8_t *data_out, size_t data_out_len,
 103                                       QVirtIOSCSICmdResp *resp_out)
 104 {
 105     QVirtQueue *vq;
 106     QVirtIOSCSICmdReq req = { { 0 } };
 107     QVirtIOSCSICmdResp resp = { .response = 0xff, .status = 0xff };
 108     uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
 109     uint8_t response;
 110     uint32_t free_head;
 111
 112     vq = vs->vq[2];
 113
 114     req.lun[0] = 1; /* Select LUN */
 115     req.lun[1] = 1; /* Select target 1 */
 116     memcpy(req.cdb, cdb, CDB_SIZE);
 117
 118     /* XXX: Fix endian if any multi-byte field in req/resp is used */
 119
 120     /* Add request header */
 121     req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
 122     free_head = qvirtqueue_add(vq, req_addr, sizeof(req), false, true);
 123
 124     if (data_out_len) {
 125         data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
 126         qvirtqueue_add(vq, data_out_addr, data_out_len, false, true);
 127     }
 128
 129     /* Add response header */
 130     resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
 131     qvirtqueue_add(vq, resp_addr, sizeof(resp), true, !!data_in_len);
 132
 133     if (data_in_len) {
 134         data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
 135         qvirtqueue_add(vq, data_in_addr, data_in_len, true, false);
 136     }
 137
 138     qvirtqueue_kick(&qvirtio_pci, vs->dev, vq, free_head);
 139     qvirtio_wait_queue_isr(&qvirtio_pci, vs->dev, vq, QVIRTIO_SCSI_TIMEOUT_US);
 140
 141     response = readb(resp_addr + offsetof(QVirtIOSCSICmdResp, response));
 142
 143     if (resp_out) {
 144         memread(resp_addr, resp_out, sizeof(*resp_out));
 145     }
 146
 147     guest_free(vs->alloc, req_addr);
 148     guest_free(vs->alloc, resp_addr);
 149     guest_free(vs->alloc, data_in_addr);
 150     guest_free(vs->alloc, data_out_addr);
 151     return response;
 152 }
 153
 154 static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
 155 {
 156     const uint8_t test_unit_ready_cdb[CDB_SIZE] = {};
 157     QVirtIOSCSI *vs;
 158     QVirtioPCIDevice *dev;
 159     QVirtIOSCSICmdResp resp;
 160     void *addr;
 161     int i;
 162
 163     vs = g_new0(QVirtIOSCSI, 1);
 164     vs->alloc = pc_alloc_init();
 165     vs->bus = qpci_init_pc();
 166
 167     dev = qvirtio_pci_device_find(vs->bus, QVIRTIO_SCSI_DEVICE_ID);
 168     vs->dev = (QVirtioDevice *)dev;
 169     g_assert(dev != NULL);
 170     g_assert_cmphex(vs->dev->device_type, ==, QVIRTIO_SCSI_DEVICE_ID);
 171
 172     qvirtio_pci_device_enable(dev);
 173     qvirtio_reset(&qvirtio_pci, vs->dev);
 174     qvirtio_set_acknowledge(&qvirtio_pci, vs->dev);
 175     qvirtio_set_driver(&qvirtio_pci, vs->dev);
 176
 177     addr = dev->addr + QVIRTIO_PCI_DEVICE_SPECIFIC_NO_MSIX;
 178     vs->num_queues = qvirtio_config_readl(&qvirtio_pci, vs->dev,
 179                                           (uint64_t)(uintptr_t)addr);
 180
 181     g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
 182
 183     for (i = 0; i < vs->num_queues + 2; i++) {
 184         vs->vq[i] = qvirtqueue_setup(&qvirtio_pci, vs->dev, vs->alloc, i);
 185     }
 186
 187     /* Clear the POWER ON OCCURRED unit attention */
 188     g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
 189                                            NULL, 0, NULL, 0, &resp),
 190                     ==, 0);
 191     g_assert_cmpint(resp.status, ==, CHECK_CONDITION);
 192     g_assert_cmpint(resp.sense[0], ==, 0x70); /* Fixed format sense buffer */
 193     g_assert_cmpint(resp.sense[2], ==, UNIT_ATTENTION);
 194     g_assert_cmpint(resp.sense[12], ==, 0x29); /* POWER ON */
 195     g_assert_cmpint(resp.sense[13], ==, 0x00);
 196
 197     return vs;
 198 }
 199
 200 /* Tests only initialization so far. TODO: Replace with functional tests */
 201 static void pci_nop(void)
 202 {
 203     qvirtio_scsi_start(NULL);
 204     qvirtio_scsi_stop();
 205 }
 206
 207 static void hotplug(void)
 208 {
 209     QDict *response;
 210
 211     qvirtio_scsi_start("-drive id=drv1,if=none,file=/dev/null,format=raw");
 212     response = qmp("{\"execute\": \"device_add\","
 213                    " \"arguments\": {"
 214                    "   \"driver\": \"scsi-hd\","
 215                    "   \"id\": \"scsi-hd\","
 216                    "   \"drive\": \"drv1\""
 217                    "}}");
 218
 219     g_assert(response);
 220     g_assert(!qdict_haskey(response, "error"));
 221     QDECREF(response);
 222
 223     response = qmp("{\"execute\": \"device_del\","
 224                    " \"arguments\": {"
 225                    "   \"id\": \"scsi-hd\""
 226                    "}}");
 227
 228     g_assert(response);
 229     g_assert(!qdict_haskey(response, "error"));
 230     g_assert(qdict_haskey(response, "event"));
 231     g_assert(!strcmp(qdict_get_str(response, "event"), "DEVICE_DELETED"));
 232     QDECREF(response);
 233     qvirtio_scsi_stop();
 234 }
 235
 236 /* Test WRITE SAME with the lba not aligned */
 237 static void test_unaligned_write_same(void)
 238 {
 239     QVirtIOSCSI *vs;
 240     uint8_t buf1[512] = { 0 };
 241     uint8_t buf2[512] = { 1 };
 242     const uint8_t write_same_cdb_1[CDB_SIZE] = { 0x41, 0x00, 0x00, 0x00, 0x00,
 243                                                0x01, 0x00, 0x00, 0x02, 0x00 };
 244     const uint8_t write_same_cdb_2[CDB_SIZE] = { 0x41, 0x00, 0x00, 0x00, 0x00,
 245                                                0x01, 0x00, 0x33, 0x00, 0x00 };
 246
 247     qvirtio_scsi_start("-drive file=blkdebug::null-co://,if=none,id=dr1"
 248                        ",format=raw,file.align=4k "
 249                        "-device scsi-disk,drive=dr1,lun=0,scsi-id=1");
 250     vs = qvirtio_scsi_pci_init(PCI_SLOT);
 251
 252     g_assert_cmphex(0, ==,
 253         virtio_scsi_do_command(vs, write_same_cdb_1, NULL, 0, buf1, 512, NULL));
 254
 255     g_assert_cmphex(0, ==,
 256         virtio_scsi_do_command(vs, write_same_cdb_2, NULL, 0, buf2, 512, NULL));
 257
 258     qvirtio_scsi_pci_free(vs);
 259     qvirtio_scsi_stop();
 260 }
 261
 262 int main(int argc, char **argv)
 263 {
 264     int ret;
 265
 266     g_test_init(&argc, &argv, NULL);
 267     qtest_add_func("/virtio/scsi/pci/nop", pci_nop);
 268     qtest_add_func("/virtio/scsi/pci/hotplug", hotplug);
 269     qtest_add_func("/virtio/scsi/pci/scsi-disk/unaligned-write-same",
 270                    test_unaligned_write_same);
 271
 272     ret = g_test_run();
 273
 274     return ret;
 275 }