tests/virtio-9p-test.c

   1 /*
   2  * QTest testcase for VirtIO 9P
   3  *
   4  * Copyright (c) 2014 SUSE LINUX Products GmbH
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "libqtest.h"
  12 #include "qemu-common.h"
  13 #include "libqos/pci-pc.h"
  14 #include "libqos/virtio.h"
  15 #include "libqos/virtio-pci.h"
  16 #include "libqos/malloc.h"
  17 #include "libqos/malloc-pc.h"
  18 #include "standard-headers/linux/virtio_ids.h"
  19 #include "standard-headers/linux/virtio_pci.h"
  20
  21 static const char mount_tag[] = "qtest";
  22 static char *test_share;
  23
  24 static void qvirtio_9p_start(void)
  25 {
  26     char *args;
  27
  28     test_share = g_strdup("/tmp/qtest.XXXXXX");
  29     g_assert_nonnull(mkdtemp(test_share));
  30
  31     args = g_strdup_printf("-fsdev local,id=fsdev0,security_model=none,path=%s "
  32                            "-device virtio-9p-pci,fsdev=fsdev0,mount_tag=%s",
  33                            test_share, mount_tag);
  34
  35     qtest_start(args);
  36     g_free(args);
  37 }
  38
  39 static void qvirtio_9p_stop(void)
  40 {
  41     qtest_end();
  42     rmdir(test_share);
  43     g_free(test_share);
  44 }
  45
  46 static void pci_nop(void)
  47 {
  48     qvirtio_9p_start();
  49     qvirtio_9p_stop();
  50 }
  51
  52 typedef struct {
  53     QVirtioDevice *dev;
  54     QGuestAllocator *alloc;
  55     QPCIBus *bus;
  56     QVirtQueue *vq;
  57 } QVirtIO9P;
  58
  59 static QVirtIO9P *qvirtio_9p_pci_init(void)
  60 {
  61     QVirtIO9P *v9p;
  62     QVirtioPCIDevice *dev;
  63
  64     v9p = g_new0(QVirtIO9P, 1);
  65     v9p->alloc = pc_alloc_init();
  66     v9p->bus = qpci_init_pc(NULL);
  67
  68     dev = qvirtio_pci_device_find(v9p->bus, VIRTIO_ID_9P);
  69     g_assert_nonnull(dev);
  70     g_assert_cmphex(dev->vdev.device_type, ==, VIRTIO_ID_9P);
  71     v9p->dev = (QVirtioDevice *) dev;
  72
  73     qvirtio_pci_device_enable(dev);
  74     qvirtio_reset(&qvirtio_pci, v9p->dev);
  75     qvirtio_set_acknowledge(&qvirtio_pci, v9p->dev);
  76     qvirtio_set_driver(&qvirtio_pci, v9p->dev);
  77
  78     v9p->vq = qvirtqueue_setup(&qvirtio_pci, v9p->dev, v9p->alloc, 0);
  79     return v9p;
  80 }
  81
  82 static void qvirtio_9p_pci_free(QVirtIO9P *v9p)
  83 {
  84     qvirtqueue_cleanup(&qvirtio_pci, v9p->vq, v9p->alloc);
  85     pc_alloc_uninit(v9p->alloc);
  86     qvirtio_pci_device_disable(container_of(v9p->dev, QVirtioPCIDevice, vdev));
  87     g_free(v9p->dev);
  88     qpci_free_pc(v9p->bus);
  89     g_free(v9p);
  90 }
  91
  92 static void pci_basic_config(void)
  93 {
  94     QVirtIO9P *v9p;
  95     void *addr;
  96     size_t tag_len;
  97     char *tag;
  98     int i;
  99
 100     qvirtio_9p_start();
 101     v9p = qvirtio_9p_pci_init();
 102
 103     addr = ((QVirtioPCIDevice *) v9p->dev)->addr + VIRTIO_PCI_CONFIG_OFF(false);
 104     tag_len = qvirtio_config_readw(&qvirtio_pci, v9p->dev,
 105                                    (uint64_t)(uintptr_t)addr);
 106     g_assert_cmpint(tag_len, ==, strlen(mount_tag));
 107     addr += sizeof(uint16_t);
 108
 109     tag = g_malloc(tag_len);
 110     for (i = 0; i < tag_len; i++) {
 111         tag[i] = qvirtio_config_readb(&qvirtio_pci, v9p->dev,
 112                                       (uint64_t)(uintptr_t)addr + i);
 113     }
 114     g_assert_cmpmem(tag, tag_len, mount_tag, tag_len);
 115     g_free(tag);
 116
 117     qvirtio_9p_pci_free(v9p);
 118     qvirtio_9p_stop();
 119 }
 120
 121 int main(int argc, char **argv)
 122 {
 123     g_test_init(&argc, &argv, NULL);
 124     qtest_add_func("/virtio/9p/pci/nop", pci_nop);
 125     qtest_add_func("/virtio/9p/pci/basic/configuration", pci_basic_config);
 126
 127     return g_test_run();
 128 }