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 <glib.h>
  12 #include <string.h>
  13 #include "libqtest.h"
  14 #include "qemu/osdep.h"
  15 #include <stdio.h>
  16 #include "libqos/virtio.h"
  17 #include "libqos/virtio-pci.h"
  18 #include "libqos/pci-pc.h"
  19 #include "libqos/malloc.h"
  20 #include "libqos/malloc-pc.h"
  21 #include "libqos/malloc-generic.h"
  22
  23 #define PCI_SLOT                0x02
  24 #define PCI_FN                  0x00
  25 #define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
  26 #define CDB_SIZE 32
  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 typedef struct {
  39     uint8_t lun[8];
  40     int64_t tag;
  41     uint8_t task_attr;
  42     uint8_t prio;
  43     uint8_t crn;
  44     uint8_t cdb[CDB_SIZE];
  45 } QEMU_PACKED QVirtIOSCSICmdReq;
  46
  47 typedef struct {
  48     uint32_t sense_len;
  49     uint32_t resid;
  50     uint16_t status_qualifier;
  51     uint8_t status;
  52     uint8_t response;
  53     uint8_t sense[96];
  54 } QEMU_PACKED QVirtIOSCSICmdResp;
  55
  56 static void qvirtio_scsi_start(const char *extra_opts)
  57 {
  58     char *cmdline;
  59
  60     cmdline = g_strdup_printf(
  61                 "-drive id=drv0,if=none,file=/dev/null,format=raw "
  62                 "-device virtio-scsi-pci,id=vs0 "
  63                 "-device scsi-hd,bus=vs0.0,drive=drv0 %s",
  64                 extra_opts ? : "");
  65     qtest_start(cmdline);
  66     g_free(cmdline);
  67 }
  68
  69 static void qvirtio_scsi_stop(void)
  70 {
  71     qtest_end();
  72 }
  73
  74 static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
  75 {
  76     QVirtIOSCSI *vs;
  77     QVirtioPCIDevice *dev;
  78     void *addr;
  79     int i;
  80
  81     vs = g_new0(QVirtIOSCSI, 1);
  82     vs->alloc = pc_alloc_init();
  83     vs->bus = qpci_init_pc();
  84
  85     dev = qvirtio_pci_device_find(vs->bus, QVIRTIO_SCSI_DEVICE_ID);
  86     vs->dev = (QVirtioDevice *)dev;
  87     g_assert(dev != NULL);
  88     g_assert_cmphex(vs->dev->device_type, ==, QVIRTIO_SCSI_DEVICE_ID);
  89
  90     qvirtio_pci_device_enable(dev);
  91     qvirtio_reset(&qvirtio_pci, vs->dev);
  92     qvirtio_set_acknowledge(&qvirtio_pci, vs->dev);
  93     qvirtio_set_driver(&qvirtio_pci, vs->dev);
  94
  95     addr = dev->addr + QVIRTIO_PCI_DEVICE_SPECIFIC_NO_MSIX;
  96     vs->num_queues = qvirtio_config_readl(&qvirtio_pci, vs->dev,
  97                                           (uint64_t)(uintptr_t)addr);
  98
  99     g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
 100
 101     for (i = 0; i < vs->num_queues + 2; i++) {
 102         vs->vq[i] = qvirtqueue_setup(&qvirtio_pci, vs->dev, vs->alloc, i);
 103     }
 104
 105     return vs;
 106 }
 107
 108 static void qvirtio_scsi_pci_free(QVirtIOSCSI *vs)
 109 {
 110     int i;
 111
 112     for (i = 0; i < vs->num_queues + 2; i++) {
 113         guest_free(vs->alloc, vs->vq[i]->desc);
 114     }
 115     pc_alloc_uninit(vs->alloc);
 116     qvirtio_pci_device_disable(container_of(vs->dev, QVirtioPCIDevice, vdev));
 117     g_free(vs->dev);
 118     qpci_free_pc(vs->bus);
 119 }
 120
 121 static uint64_t qvirtio_scsi_alloc(QVirtIOSCSI *vs, size_t alloc_size,
 122                                    const void *data)
 123 {
 124     uint64_t addr;
 125
 126     addr = guest_alloc(vs->alloc, alloc_size);
 127     if (data) {
 128         memwrite(addr, data, alloc_size);
 129     }
 130
 131     return addr;
 132 }
 133
 134 static uint8_t virtio_scsi_do_command(QVirtIOSCSI *vs, const uint8_t *cdb,
 135                                       const uint8_t *data_in,
 136                                       size_t data_in_len,
 137                                       uint8_t *data_out, size_t data_out_len)
 138 {
 139     QVirtQueue *vq;
 140     QVirtIOSCSICmdReq req = { { 0 } };
 141     QVirtIOSCSICmdResp resp = { .response = 0xff, .status = 0xff };
 142     uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
 143     uint8_t response;
 144     uint32_t free_head;
 145
 146     vq = vs->vq[2];
 147
 148     req.lun[0] = 1; /* Select LUN */
 149     req.lun[1] = 1; /* Select target 1 */
 150     memcpy(req.cdb, cdb, CDB_SIZE);
 151
 152     /* XXX: Fix endian if any multi-byte field in req/resp is used */
 153
 154     /* Add request header */
 155     req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
 156     free_head = qvirtqueue_add(vq, req_addr, sizeof(req), false, true);
 157
 158     if (data_out_len) {
 159         data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
 160         qvirtqueue_add(vq, data_out_addr, data_out_len, false, true);
 161     }
 162
 163     /* Add response header */
 164     resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
 165     qvirtqueue_add(vq, resp_addr, sizeof(resp), true, !!data_in_len);
 166
 167     if (data_in_len) {
 168         data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
 169         qvirtqueue_add(vq, data_in_addr, data_in_len, true, false);
 170     }
 171
 172     qvirtqueue_kick(&qvirtio_pci, vs->dev, vq, free_head);
 173     qvirtio_wait_queue_isr(&qvirtio_pci, vs->dev, vq, QVIRTIO_SCSI_TIMEOUT_US);
 174
 175     response = readb(resp_addr + offsetof(QVirtIOSCSICmdResp, response));
 176
 177     guest_free(vs->alloc, req_addr);
 178     guest_free(vs->alloc, resp_addr);
 179     guest_free(vs->alloc, data_in_addr);
 180     guest_free(vs->alloc, data_out_addr);
 181     return response;
 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 buf[512] = { 0 };
 225     const uint8_t write_same_cdb[CDB_SIZE] = { 0x41, 0x00, 0x00, 0x00, 0x00,
 226                                                0x01, 0x00, 0x00, 0x02, 0x00 };
 227
 228     qvirtio_scsi_start("-drive file=blkdebug::null-co://,if=none,id=dr1"
 229                        ",format=raw,file.align=4k "
 230                        "-device scsi-disk,drive=dr1,lun=0,scsi-id=1");
 231     vs = qvirtio_scsi_pci_init(PCI_SLOT);
 232
 233     g_assert_cmphex(0, ==,
 234         virtio_scsi_do_command(vs, write_same_cdb, NULL, 0, buf, 512));
 235
 236     qvirtio_scsi_pci_free(vs);
 237     qvirtio_scsi_stop();
 238 }
 239
 240 int main(int argc, char **argv)
 241 {
 242     int ret;
 243
 244     g_test_init(&argc, &argv, NULL);
 245     qtest_add_func("/virtio/scsi/pci/nop", pci_nop);
 246     qtest_add_func("/virtio/scsi/pci/hotplug", hotplug);
 247     qtest_add_func("/virtio/scsi/pci/scsi-disk/unaligned-write-same",
 248                    test_unaligned_write_same);
 249
 250     ret = g_test_run();
 251
 252     return ret;
 253 }