| 1 | /* |
| 2 | * QTest testcase for LSI MegaRAID |
| 3 | * |
| 4 | * Copyright (c) 2017 Red Hat Inc. |
| 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/bswap.h" |
| 13 | #include "qemu/module.h" |
| 14 | #include "libqos/qgraph.h" |
| 15 | #include "libqos/pci.h" |
| 16 | |
| 17 | typedef struct QMegasas QMegasas; |
| 18 | |
| 19 | struct QMegasas { |
| 20 | QOSGraphObject obj; |
| 21 | QPCIDevice dev; |
| 22 | }; |
| 23 | |
| 24 | static void *megasas_get_driver(void *obj, const char *interface) |
| 25 | { |
| 26 | QMegasas *megasas = obj; |
| 27 | |
| 28 | if (!g_strcmp0(interface, "pci-device")) { |
| 29 | return &megasas->dev; |
| 30 | } |
| 31 | |
| 32 | fprintf(stderr, "%s not present in megasas\n", interface); |
| 33 | g_assert_not_reached(); |
| 34 | } |
| 35 | |
| 36 | static void *megasas_create(void *pci_bus, QGuestAllocator *alloc, void *addr) |
| 37 | { |
| 38 | QMegasas *megasas = g_new0(QMegasas, 1); |
| 39 | QPCIBus *bus = pci_bus; |
| 40 | |
| 41 | qpci_device_init(&megasas->dev, bus, addr); |
| 42 | megasas->obj.get_driver = megasas_get_driver; |
| 43 | |
| 44 | return &megasas->obj; |
| 45 | } |
| 46 | |
| 47 | /* This used to cause a NULL pointer dereference. */ |
| 48 | static void megasas_pd_get_info_fuzz(void *obj, void *data, QGuestAllocator *alloc) |
| 49 | { |
| 50 | QMegasas *megasas = obj; |
| 51 | QPCIDevice *dev = &megasas->dev; |
| 52 | QPCIBar bar; |
| 53 | uint32_t context[256]; |
| 54 | uint64_t context_pa; |
| 55 | int i; |
| 56 | |
| 57 | qpci_device_enable(dev); |
| 58 | bar = qpci_iomap(dev, 0, NULL); |
| 59 | |
| 60 | memset(context, 0, sizeof(context)); |
| 61 | context[0] = cpu_to_le32(0x05050505); |
| 62 | context[1] = cpu_to_le32(0x01010101); |
| 63 | for (i = 2; i < ARRAY_SIZE(context); i++) { |
| 64 | context[i] = cpu_to_le32(0x41414141); |
| 65 | } |
| 66 | context[6] = cpu_to_le32(0x02020000); |
| 67 | context[7] = cpu_to_le32(0); |
| 68 | |
| 69 | context_pa = guest_alloc(alloc, sizeof(context)); |
| 70 | qtest_memwrite(dev->bus->qts, context_pa, context, sizeof(context)); |
| 71 | qpci_io_writel(dev, bar, 0x40, context_pa); |
| 72 | } |
| 73 | |
| 74 | static void megasas_register_nodes(void) |
| 75 | { |
| 76 | QOSGraphEdgeOptions opts = { |
| 77 | .extra_device_opts = "addr=04.0,id=scsi0", |
| 78 | .before_cmd_line = "-drive id=drv0,if=none,file=null-co://," |
| 79 | "file.read-zeroes=on,format=raw", |
| 80 | .after_cmd_line = "-device scsi-hd,bus=scsi0.0,drive=drv0", |
| 81 | }; |
| 82 | |
| 83 | add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) }); |
| 84 | |
| 85 | qos_node_create_driver("megasas", megasas_create); |
| 86 | qos_node_consumes("megasas", "pci-bus", &opts); |
| 87 | qos_node_produces("megasas", "pci-device"); |
| 88 | |
| 89 | qos_add_test("dcmd/pd-get-info/fuzz", "megasas", megasas_pd_get_info_fuzz, NULL); |
| 90 | } |
| 91 | libqos_init(megasas_register_nodes); |