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 "libqtest.h"
  13 #include "scsi/constants.h"
  14 #include "libqos/libqos-pc.h"
  15 #include "libqos/libqos-spapr.h"
  16 #include "libqos/virtio.h"
  17 #include "libqos/virtio-pci.h"
  18 #include "standard-headers/linux/virtio_ids.h"
  19 #include "standard-headers/linux/virtio_pci.h"
  20 #include "standard-headers/linux/virtio_scsi.h"
  21
  22 #define PCI_SLOT                0x02
  23 #define PCI_FN                  0x00
  24 #define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
  25
  26 #define MAX_NUM_QUEUES 64
  27
  28 typedef struct {
  29     QVirtioDevice *dev;
  30     QOSState *qs;
  31     int num_queues;
  32     QVirtQueue *vq[MAX_NUM_QUEUES + 2];
  33 } QVirtIOSCSI;
  34
  35 static QOSState *qvirtio_scsi_start(const char *extra_opts)
  36 {
  37     QOSState *qs;
  38     const char *arch = qtest_get_arch();
  39     const char *cmd = "-drive id=drv0,if=none,file=null-co://,format=raw "
  40                       "-device virtio-scsi-pci,id=vs0 "
  41                       "-device scsi-hd,bus=vs0.0,drive=drv0 %s";
  42
  43     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
  44         qs = qtest_pc_boot(cmd, extra_opts ? : "");
  45     } else if (strcmp(arch, "ppc64") == 0) {
  46         qs = qtest_spapr_boot(cmd, extra_opts ? : "");
  47     } else {
  48         g_printerr("virtio-scsi tests are only available on x86 or ppc64\n");
  49         exit(EXIT_FAILURE);
  50     }
  51     global_qtest = qs->qts;
  52     return qs;
  53 }
  54
  55 static void qvirtio_scsi_stop(QOSState *qs)
  56 {
  57     qtest_shutdown(qs);
  58 }
  59
  60 static void qvirtio_scsi_pci_free(QVirtIOSCSI *vs)
  61 {
  62     int i;
  63
  64     for (i = 0; i < vs->num_queues + 2; i++) {
  65         qvirtqueue_cleanup(vs->dev->bus, vs->vq[i], vs->qs->alloc);
  66     }
  67     qvirtio_pci_device_disable(container_of(vs->dev, QVirtioPCIDevice, vdev));
  68     qvirtio_pci_device_free((QVirtioPCIDevice *)vs->dev);
  69     qvirtio_scsi_stop(vs->qs);
  70     g_free(vs);
  71 }
  72
  73 static uint64_t qvirtio_scsi_alloc(QVirtIOSCSI *vs, size_t alloc_size,
  74                                    const void *data)
  75 {
  76     uint64_t addr;
  77
  78     addr = guest_alloc(vs->qs->alloc, alloc_size);
  79     if (data) {
  80         memwrite(addr, data, alloc_size);
  81     }
  82
  83     return addr;
  84 }
  85
  86 static uint8_t virtio_scsi_do_command(QVirtIOSCSI *vs, const uint8_t *cdb,
  87                                       const uint8_t *data_in,
  88                                       size_t data_in_len,
  89                                       uint8_t *data_out, size_t data_out_len,
  90                                       struct virtio_scsi_cmd_resp *resp_out)
  91 {
  92     QVirtQueue *vq;
  93     struct virtio_scsi_cmd_req req = { { 0 } };
  94     struct virtio_scsi_cmd_resp resp = { .response = 0xff, .status = 0xff };
  95     uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
  96     uint8_t response;
  97     uint32_t free_head;
  98
  99     vq = vs->vq[2];
 100
 101     req.lun[0] = 1; /* Select LUN */
 102     req.lun[1] = 1; /* Select target 1 */
 103     memcpy(req.cdb, cdb, VIRTIO_SCSI_CDB_SIZE);
 104
 105     /* XXX: Fix endian if any multi-byte field in req/resp is used */
 106
 107     /* Add request header */
 108     req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
 109     free_head = qvirtqueue_add(vq, req_addr, sizeof(req), false, true);
 110
 111     if (data_out_len) {
 112         data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
 113         qvirtqueue_add(vq, data_out_addr, data_out_len, false, true);
 114     }
 115
 116     /* Add response header */
 117     resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
 118     qvirtqueue_add(vq, resp_addr, sizeof(resp), true, !!data_in_len);
 119
 120     if (data_in_len) {
 121         data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
 122         qvirtqueue_add(vq, data_in_addr, data_in_len, true, false);
 123     }
 124
 125     qvirtqueue_kick(vs->dev, vq, free_head);
 126     qvirtio_wait_used_elem(vs->dev, vq, free_head, NULL,
 127                            QVIRTIO_SCSI_TIMEOUT_US);
 128
 129     response = readb(resp_addr +
 130                      offsetof(struct virtio_scsi_cmd_resp, response));
 131
 132     if (resp_out) {
 133         memread(resp_addr, resp_out, sizeof(*resp_out));
 134     }
 135
 136     guest_free(vs->qs->alloc, req_addr);
 137     guest_free(vs->qs->alloc, resp_addr);
 138     guest_free(vs->qs->alloc, data_in_addr);
 139     guest_free(vs->qs->alloc, data_out_addr);
 140     return response;
 141 }
 142
 143 static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
 144 {
 145     const uint8_t test_unit_ready_cdb[VIRTIO_SCSI_CDB_SIZE] = {};
 146     QVirtIOSCSI *vs;
 147     QVirtioPCIDevice *dev;
 148     struct virtio_scsi_cmd_resp resp;
 149     int i;
 150
 151     vs = g_new0(QVirtIOSCSI, 1);
 152
 153     vs->qs = qvirtio_scsi_start("-drive file=blkdebug::null-co://,"
 154                                 "if=none,id=dr1,format=raw,file.align=4k "
 155                                 "-device scsi-hd,drive=dr1,lun=0,scsi-id=1");
 156     dev = qvirtio_pci_device_find(vs->qs->pcibus, VIRTIO_ID_SCSI);
 157     vs->dev = (QVirtioDevice *)dev;
 158     g_assert(dev != NULL);
 159     g_assert_cmphex(vs->dev->device_type, ==, VIRTIO_ID_SCSI);
 160
 161     qvirtio_pci_device_enable(dev);
 162     qvirtio_reset(vs->dev);
 163     qvirtio_set_acknowledge(vs->dev);
 164     qvirtio_set_driver(vs->dev);
 165
 166     vs->num_queues = qvirtio_config_readl(vs->dev, 0);
 167
 168     g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
 169
 170     for (i = 0; i < vs->num_queues + 2; i++) {
 171         vs->vq[i] = qvirtqueue_setup(vs->dev, vs->qs->alloc, i);
 172     }
 173
 174     /* Clear the POWER ON OCCURRED unit attention */
 175     g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
 176                                            NULL, 0, NULL, 0, &resp),
 177                     ==, 0);
 178     g_assert_cmpint(resp.status, ==, CHECK_CONDITION);
 179     g_assert_cmpint(resp.sense[0], ==, 0x70); /* Fixed format sense buffer */
 180     g_assert_cmpint(resp.sense[2], ==, UNIT_ATTENTION);
 181     g_assert_cmpint(resp.sense[12], ==, 0x29); /* POWER ON */
 182     g_assert_cmpint(resp.sense[13], ==, 0x00);
 183
 184     return vs;
 185 }
 186
 187 /* Tests only initialization so far. TODO: Replace with functional tests */
 188 static void pci_nop(void)
 189 {
 190     QOSState *qs;
 191
 192     qs = qvirtio_scsi_start(NULL);
 193     qvirtio_scsi_stop(qs);
 194 }
 195
 196 static void hotplug(void)
 197 {
 198     QOSState *qs;
 199
 200     qs = qvirtio_scsi_start(
 201             "-drive id=drv1,if=none,file=null-co://,format=raw");
 202     qtest_qmp_device_add("scsi-hd", "scsihd", "'drive': 'drv1'");
 203     qtest_qmp_device_del("scsihd");
 204     qvirtio_scsi_stop(qs);
 205 }
 206
 207 /* Test WRITE SAME with the lba not aligned */
 208 static void test_unaligned_write_same(void)
 209 {
 210     QVirtIOSCSI *vs;
 211     uint8_t buf1[512] = { 0 };
 212     uint8_t buf2[512] = { 1 };
 213     const uint8_t write_same_cdb_1[VIRTIO_SCSI_CDB_SIZE] = {
 214         0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00
 215     };
 216     const uint8_t write_same_cdb_2[VIRTIO_SCSI_CDB_SIZE] = {
 217         0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
 218     };
 219
 220     vs = qvirtio_scsi_pci_init(PCI_SLOT);
 221
 222     g_assert_cmphex(0, ==,
 223         virtio_scsi_do_command(vs, write_same_cdb_1, NULL, 0, buf1, 512, NULL));
 224
 225     g_assert_cmphex(0, ==,
 226         virtio_scsi_do_command(vs, write_same_cdb_2, NULL, 0, buf2, 512, NULL));
 227
 228     qvirtio_scsi_pci_free(vs);
 229 }
 230
 231 int main(int argc, char **argv)
 232 {
 233     g_test_init(&argc, &argv, NULL);
 234     qtest_add_func("/virtio/scsi/pci/nop", pci_nop);
 235     qtest_add_func("/virtio/scsi/pci/hotplug", hotplug);
 236     qtest_add_func("/virtio/scsi/pci/scsi-disk/unaligned-write-same",
 237                    test_unaligned_write_same);
 238
 239     return g_test_run();
 240 }