tdx_global_metadata.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Automatically generated functions to read TDX global metadata.
 4 *
 5 * This file doesn't compile on its own as it lacks of inclusion
 6 * of SEAMCALL wrapper primitive which reads global metadata.
 7 * Include this file to other C file instead.
 8 */
 9
10static int get_tdx_sys_info_features(struct tdx_sys_info_features *sysinfo_features)
11{
12	int ret = 0;
13	u64 val;
14
15	if (!ret && !(ret = read_sys_metadata_field(0x0A00000300000008, &val)))
16		sysinfo_features->tdx_features0 = val;
17
18	return ret;
19}
20
21static int get_tdx_sys_info_tdmr(struct tdx_sys_info_tdmr *sysinfo_tdmr)
22{
23	int ret = 0;
24	u64 val;
25
26	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000008, &val)))
27		sysinfo_tdmr->max_tdmrs = val;
28	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000009, &val)))
29		sysinfo_tdmr->max_reserved_per_tdmr = val;
30	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000010, &val)))
31		sysinfo_tdmr->pamt_4k_entry_size = val;
32	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000011, &val)))
33		sysinfo_tdmr->pamt_2m_entry_size = val;
34	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000012, &val)))
35		sysinfo_tdmr->pamt_1g_entry_size = val;
36
37	return ret;
38}
39
40static int get_tdx_sys_info_td_ctrl(struct tdx_sys_info_td_ctrl *sysinfo_td_ctrl)
41{
42	int ret = 0;
43	u64 val;
44
45	if (!ret && !(ret = read_sys_metadata_field(0x9800000100000000, &val)))
46		sysinfo_td_ctrl->tdr_base_size = val;
47	if (!ret && !(ret = read_sys_metadata_field(0x9800000100000100, &val)))
48		sysinfo_td_ctrl->tdcs_base_size = val;
49	if (!ret && !(ret = read_sys_metadata_field(0x9800000100000200, &val)))
50		sysinfo_td_ctrl->tdvps_base_size = val;
51
52	return ret;
53}
54
55static int get_tdx_sys_info_td_conf(struct tdx_sys_info_td_conf *sysinfo_td_conf)
56{
57	int ret = 0;
58	u64 val;
59	int i, j;
60
61	if (!ret && !(ret = read_sys_metadata_field(0x1900000300000000, &val)))
62		sysinfo_td_conf->attributes_fixed0 = val;
63	if (!ret && !(ret = read_sys_metadata_field(0x1900000300000001, &val)))
64		sysinfo_td_conf->attributes_fixed1 = val;
65	if (!ret && !(ret = read_sys_metadata_field(0x1900000300000002, &val)))
66		sysinfo_td_conf->xfam_fixed0 = val;
67	if (!ret && !(ret = read_sys_metadata_field(0x1900000300000003, &val)))
68		sysinfo_td_conf->xfam_fixed1 = val;
69	if (!ret && !(ret = read_sys_metadata_field(0x9900000100000004, &val)))
70		sysinfo_td_conf->num_cpuid_config = val;
71	if (!ret && !(ret = read_sys_metadata_field(0x9900000100000008, &val)))
72		sysinfo_td_conf->max_vcpus_per_td = val;
73	if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_leaves))
74		return -EINVAL;
75	for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++)
76		if (!ret && !(ret = read_sys_metadata_field(0x9900000300000400 + i, &val)))
77			sysinfo_td_conf->cpuid_config_leaves[i] = val;
78	if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_values))
79		return -EINVAL;
80	for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++)
81		for (j = 0; j < 2; j++)
82			if (!ret && !(ret = read_sys_metadata_field(0x9900000300000500 + i * 2 + j, &val)))
83				sysinfo_td_conf->cpuid_config_values[i][j] = val;
84
85	return ret;
86}
87
88static int get_tdx_sys_info(struct tdx_sys_info *sysinfo)
89{
90	int ret = 0;
91
92	ret = ret ?: get_tdx_sys_info_features(&sysinfo->features);
93	ret = ret ?: get_tdx_sys_info_tdmr(&sysinfo->tdmr);
94	ret = ret ?: get_tdx_sys_info_td_ctrl(&sysinfo->td_ctrl);
95	ret = ret ?: get_tdx_sys_info_td_conf(&sysinfo->td_conf);
96
97	return ret;
98}