1 /*
2 * QTest testcase for intel-iommu
3 *
4 * Copyright (c) 2024 Intel, Inc.
5 *
6 * Author: Zhenzhong Duan <zhenzhong.duan@intel.com>
7 *
8 * SPDX-License-Identifier: GPL-2.0-or-later
9 */
10
11 #include "qemu/osdep.h"
12 #include "libqtest.h"
13 #include "hw/i386/intel_iommu_internal.h"
14
15 #define CAP_STAGE_1_FIXED1 (VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND | \
16 VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS)
17 #define ECAP_STAGE_1_FIXED1 (VTD_ECAP_QI | VTD_ECAP_IR | VTD_ECAP_IRO | \
18 VTD_ECAP_MHMV | VTD_ECAP_SMTS | VTD_ECAP_FLTS)
19
vtd_reg_readq(QTestState * s,uint64_t offset)20 static inline uint64_t vtd_reg_readq(QTestState *s, uint64_t offset)
21 {
22 return qtest_readq(s, Q35_HOST_BRIDGE_IOMMU_ADDR + offset);
23 }
24
test_intel_iommu_stage_1(void)25 static void test_intel_iommu_stage_1(void)
26 {
27 uint8_t init_csr[DMAR_REG_SIZE]; /* register values */
28 uint8_t post_reset_csr[DMAR_REG_SIZE]; /* register values */
29 uint64_t cap, ecap, tmp;
30 QTestState *s;
31
32 s = qtest_init("-M q35 -device intel-iommu,x-scalable-mode=on,x-flts=on");
33
34 cap = vtd_reg_readq(s, DMAR_CAP_REG);
35 g_assert((cap & CAP_STAGE_1_FIXED1) == CAP_STAGE_1_FIXED1);
36
37 tmp = cap & VTD_CAP_SAGAW_MASK;
38 g_assert(tmp == (VTD_CAP_SAGAW_39bit | VTD_CAP_SAGAW_48bit));
39
40 tmp = VTD_MGAW_FROM_CAP(cap);
41 g_assert(tmp == VTD_HOST_AW_48BIT - 1);
42
43 ecap = vtd_reg_readq(s, DMAR_ECAP_REG);
44 g_assert((ecap & ECAP_STAGE_1_FIXED1) == ECAP_STAGE_1_FIXED1);
45
46 qtest_memread(s, Q35_HOST_BRIDGE_IOMMU_ADDR, init_csr, DMAR_REG_SIZE);
47
48 qobject_unref(qtest_qmp(s, "{ 'execute': 'system_reset' }"));
49 qtest_qmp_eventwait(s, "RESET");
50
51 qtest_memread(s, Q35_HOST_BRIDGE_IOMMU_ADDR, post_reset_csr, DMAR_REG_SIZE);
52 /* Ensure registers are consistent after hard reset */
53 g_assert(!memcmp(init_csr, post_reset_csr, DMAR_REG_SIZE));
54
55 qtest_quit(s);
56 }
57
main(int argc,char ** argv)58 int main(int argc, char **argv)
59 {
60 g_test_init(&argc, &argv, NULL);
61 qtest_add_func("/q35/intel-iommu/stage-1", test_intel_iommu_stage_1);
62
63 return g_test_run();
64 }
65