tests/nvme-test.c

   1 /*
   2  * QTest testcase for NVMe
   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 "qemu/units.h"
  12 #include "libqtest.h"
  13 #include "libqos/qgraph.h"
  14 #include "libqos/pci.h"
  15
  16 typedef struct QNvme QNvme;
  17
  18 struct QNvme {
  19     QOSGraphObject obj;
  20     QPCIDevice dev;
  21 };
  22
  23 static void *nvme_get_driver(void *obj, const char *interface)
  24 {
  25     QNvme *nvme = obj;
  26
  27     if (!g_strcmp0(interface, "pci-device")) {
  28         return &nvme->dev;
  29     }
  30
  31     fprintf(stderr, "%s not present in nvme\n", interface);
  32     g_assert_not_reached();
  33 }
  34
  35 static void *nvme_create(void *pci_bus, QGuestAllocator *alloc, void *addr)
  36 {
  37     QNvme *nvme = g_new0(QNvme, 1);
  38     QPCIBus *bus = pci_bus;
  39
  40     qpci_device_init(&nvme->dev, bus, addr);
  41     nvme->obj.get_driver = nvme_get_driver;
  42
  43     return &nvme->obj;
  44 }
  45
  46 /* This used to cause a NULL pointer dereference.  */
  47 static void nvmetest_oob_cmb_test(void *obj, void *data, QGuestAllocator *alloc)
  48 {
  49     const int cmb_bar_size = 2 * MiB;
  50     QNvme *nvme = obj;
  51     QPCIDevice *pdev = &nvme->dev;
  52     QPCIBar bar;
  53
  54     qpci_device_enable(pdev);
  55     bar = qpci_iomap(pdev, 2, NULL);
  56
  57     qpci_io_writel(pdev, bar, 0, 0xccbbaa99);
  58     g_assert_cmpint(qpci_io_readb(pdev, bar, 0), ==, 0x99);
  59     g_assert_cmpint(qpci_io_readw(pdev, bar, 0), ==, 0xaa99);
  60
  61     /* Test partially out-of-bounds accesses.  */
  62     qpci_io_writel(pdev, bar, cmb_bar_size - 1, 0x44332211);
  63     g_assert_cmpint(qpci_io_readb(pdev, bar, cmb_bar_size - 1), ==, 0x11);
  64     g_assert_cmpint(qpci_io_readw(pdev, bar, cmb_bar_size - 1), !=, 0x2211);
  65     g_assert_cmpint(qpci_io_readl(pdev, bar, cmb_bar_size - 1), !=, 0x44332211);
  66 }
  67
  68 static void nvme_register_nodes(void)
  69 {
  70     QOSGraphEdgeOptions opts = {
  71         .extra_device_opts = "addr=04.0,drive=drv0,serial=foo",
  72         .before_cmd_line = "-drive id=drv0,if=none,file=null-co://,format=raw",
  73     };
  74
  75     add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) });
  76
  77     qos_node_create_driver("nvme", nvme_create);
  78     qos_node_consumes("nvme", "pci-bus", &opts);
  79     qos_node_produces("nvme", "pci-device");
  80
  81     qos_add_test("oob-cmb-access", "nvme", nvmetest_oob_cmb_test, &(QOSGraphTestOptions) {
  82         .edge.extra_device_opts = "cmb_size_mb=2"
  83     });
  84 }
  85
  86 libqos_init(nvme_register_nodes);