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/module.h" 12 #include "qemu/units.h" 13 #include "libqtest.h" 14 #include "libqos/qgraph.h" 15 #include "libqos/pci.h" 16 17 typedef struct QNvme QNvme; 18 19 struct QNvme { 20 QOSGraphObject obj; 21 QPCIDevice dev; 22 }; 23 24 static void *nvme_get_driver(void *obj, const char *interface) 25 { 26 QNvme *nvme = obj; 27 28 if (!g_strcmp0(interface, "pci-device")) { 29 return &nvme->dev; 30 } 31 32 fprintf(stderr, "%s not present in nvme\n", interface); 33 g_assert_not_reached(); 34 } 35 36 static void *nvme_create(void *pci_bus, QGuestAllocator *alloc, void *addr) 37 { 38 QNvme *nvme = g_new0(QNvme, 1); 39 QPCIBus *bus = pci_bus; 40 41 qpci_device_init(&nvme->dev, bus, addr); 42 nvme->obj.get_driver = nvme_get_driver; 43 44 return &nvme->obj; 45 } 46 47 /* This used to cause a NULL pointer dereference. */ 48 static void nvmetest_oob_cmb_test(void *obj, void *data, QGuestAllocator *alloc) 49 { 50 const int cmb_bar_size = 2 * MiB; 51 QNvme *nvme = obj; 52 QPCIDevice *pdev = &nvme->dev; 53 QPCIBar bar; 54 55 qpci_device_enable(pdev); 56 bar = qpci_iomap(pdev, 2, NULL); 57 58 qpci_io_writel(pdev, bar, 0, 0xccbbaa99); 59 g_assert_cmpint(qpci_io_readb(pdev, bar, 0), ==, 0x99); 60 g_assert_cmpint(qpci_io_readw(pdev, bar, 0), ==, 0xaa99); 61 62 /* Test partially out-of-bounds accesses. */ 63 qpci_io_writel(pdev, bar, cmb_bar_size - 1, 0x44332211); 64 g_assert_cmpint(qpci_io_readb(pdev, bar, cmb_bar_size - 1), ==, 0x11); 65 g_assert_cmpint(qpci_io_readw(pdev, bar, cmb_bar_size - 1), !=, 0x2211); 66 g_assert_cmpint(qpci_io_readl(pdev, bar, cmb_bar_size - 1), !=, 0x44332211); 67 } 68 69 static void nvme_register_nodes(void) 70 { 71 QOSGraphEdgeOptions opts = { 72 .extra_device_opts = "addr=04.0,drive=drv0,serial=foo", 73 .before_cmd_line = "-drive id=drv0,if=none,file=null-co://," 74 "file.read-zeroes=on,format=raw", 75 }; 76 77 add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) }); 78 79 qos_node_create_driver("nvme", nvme_create); 80 qos_node_consumes("nvme", "pci-bus", &opts); 81 qos_node_produces("nvme", "pci-device"); 82 83 qos_add_test("oob-cmb-access", "nvme", nvmetest_oob_cmb_test, &(QOSGraphTestOptions) { 84 .edge.extra_device_opts = "cmb_size_mb=2" 85 }); 86 } 87 88 libqos_init(nvme_register_nodes); 89