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