Move fetch_table() into acpi-utils.c renaming it to acpi_fetch_table() and reuse it in vmgenid-test that reads RSDT and then tables it references, to find and parse VMGNEID SSDT. While at it wrap RSDT referenced tables enumeration into FOREACH macro (similar to what we do with QLIST_FOREACH & co) to reuse it with bios and vmgenid tests. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
186 lines
5.3 KiB
C
186 lines
5.3 KiB
C
/*
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* QTest testcase for VM Generation ID
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*
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* Copyright (c) 2016 Red Hat, Inc.
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* Copyright (c) 2017 Skyport Systems
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/bitmap.h"
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#include "qemu/uuid.h"
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#include "hw/acpi/acpi-defs.h"
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#include "boot-sector.h"
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#include "acpi-utils.h"
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#include "libqtest.h"
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#include "qapi/qmp/qdict.h"
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#define VGID_GUID "324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
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#define VMGENID_GUID_OFFSET 40 /* allow space for
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* OVMF SDT Header Probe Supressor
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*/
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#define RSDP_ADDR_INVALID 0x100000 /* RSDP must be below this address */
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static uint32_t acpi_find_vgia(QTestState *qts)
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{
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uint32_t rsdp_offset;
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uint32_t guid_offset = 0;
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uint8_t rsdp_table[36 /* ACPI 2.0+ RSDP size */];
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uint32_t rsdt_len, table_length;
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uint8_t *rsdt, *ent;
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/* Wait for guest firmware to finish and start the payload. */
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boot_sector_test(qts);
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/* Tables should be initialized now. */
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rsdp_offset = acpi_find_rsdp_address(qts);
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g_assert_cmphex(rsdp_offset, <, RSDP_ADDR_INVALID);
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acpi_parse_rsdp_table(qts, rsdp_offset, rsdp_table);
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acpi_fetch_table(qts, &rsdt, &rsdt_len, &rsdp_table[16 /* RsdtAddress */],
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"RSDT", true);
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ACPI_FOREACH_RSDT_ENTRY(rsdt, rsdt_len, ent, 4 /* Entry size */) {
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uint8_t *table_aml;
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acpi_fetch_table(qts, &table_aml, &table_length, ent, NULL, true);
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if (!memcmp(table_aml + 16 /* OEM Table ID */, "VMGENID", 7)) {
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uint32_t vgia_val;
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uint8_t *aml = &table_aml[36 /* AML byte-code start */];
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/* the first entry in the table should be VGIA
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* That's all we need
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*/
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g_assert(aml[0 /* name_op*/] == 0x08);
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g_assert(memcmp(&aml[1 /* name */], "VGIA", 4) == 0);
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g_assert(aml[5 /* value op */] == 0x0C /* dword */);
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memcpy(&vgia_val, &aml[6 /* value */], 4);
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/* The GUID is written at a fixed offset into the fw_cfg file
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* in order to implement the "OVMF SDT Header probe suppressor"
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* see docs/specs/vmgenid.txt for more details
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*/
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guid_offset = le32_to_cpu(vgia_val) + VMGENID_GUID_OFFSET;
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g_free(table_aml);
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break;
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}
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g_free(table_aml);
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}
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g_free(rsdt);
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return guid_offset;
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}
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static void read_guid_from_memory(QTestState *qts, QemuUUID *guid)
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{
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uint32_t vmgenid_addr;
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int i;
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vmgenid_addr = acpi_find_vgia(qts);
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g_assert(vmgenid_addr);
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/* Read the GUID directly from guest memory */
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for (i = 0; i < 16; i++) {
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guid->data[i] = qtest_readb(qts, vmgenid_addr + i);
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}
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/* The GUID is in little-endian format in the guest, while QEMU
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* uses big-endian. Swap after reading.
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*/
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qemu_uuid_bswap(guid);
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}
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static void read_guid_from_monitor(QTestState *qts, QemuUUID *guid)
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{
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QDict *rsp, *rsp_ret;
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const char *guid_str;
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rsp = qtest_qmp(qts, "{ 'execute': 'query-vm-generation-id' }");
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if (qdict_haskey(rsp, "return")) {
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rsp_ret = qdict_get_qdict(rsp, "return");
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g_assert(qdict_haskey(rsp_ret, "guid"));
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guid_str = qdict_get_str(rsp_ret, "guid");
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g_assert(qemu_uuid_parse(guid_str, guid) == 0);
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}
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qobject_unref(rsp);
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}
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static char disk[] = "tests/vmgenid-test-disk-XXXXXX";
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#define GUID_CMD(guid) \
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"-machine accel=kvm:tcg " \
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"-device vmgenid,id=testvgid,guid=%s " \
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"-drive id=hd0,if=none,file=%s,format=raw " \
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"-device ide-hd,drive=hd0 ", guid, disk
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static void vmgenid_set_guid_test(void)
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{
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QemuUUID expected, measured;
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QTestState *qts;
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g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
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qts = qtest_initf(GUID_CMD(VGID_GUID));
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/* Read the GUID from accessing guest memory */
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read_guid_from_memory(qts, &measured);
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g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
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qtest_quit(qts);
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}
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static void vmgenid_set_guid_auto_test(void)
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{
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QemuUUID measured;
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QTestState *qts;
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qts = qtest_initf(GUID_CMD("auto"));
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read_guid_from_memory(qts, &measured);
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/* Just check that the GUID is non-null */
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g_assert(!qemu_uuid_is_null(&measured));
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qtest_quit(qts);
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}
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static void vmgenid_query_monitor_test(void)
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{
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QemuUUID expected, measured;
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QTestState *qts;
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g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
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qts = qtest_initf(GUID_CMD(VGID_GUID));
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/* Read the GUID via the monitor */
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read_guid_from_monitor(qts, &measured);
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g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
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qtest_quit(qts);
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}
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int main(int argc, char **argv)
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{
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int ret;
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ret = boot_sector_init(disk);
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if (ret) {
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return ret;
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}
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g_test_init(&argc, &argv, NULL);
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qtest_add_func("/vmgenid/vmgenid/set-guid",
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vmgenid_set_guid_test);
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qtest_add_func("/vmgenid/vmgenid/set-guid-auto",
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vmgenid_set_guid_auto_test);
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qtest_add_func("/vmgenid/vmgenid/query-monitor",
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vmgenid_query_monitor_test);
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ret = g_test_run();
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boot_sector_cleanup(disk);
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return ret;
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}
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