diff options
Diffstat (limited to 'arch/x86/virt/vmx/tdx/tdx_global_metadata.c')
| -rw-r--r-- | arch/x86/virt/vmx/tdx/tdx_global_metadata.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c new file mode 100644 index 000000000000..13ad2663488b --- /dev/null +++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Automatically generated functions to read TDX global metadata. + * + * This file doesn't compile on its own as it lacks of inclusion + * of SEAMCALL wrapper primitive which reads global metadata. + * Include this file to other C file instead. + */ + +static int get_tdx_sys_info_features(struct tdx_sys_info_features *sysinfo_features) +{ + int ret = 0; + u64 val; + + if (!ret && !(ret = read_sys_metadata_field(0x0A00000300000008, &val))) + sysinfo_features->tdx_features0 = val; + + return ret; +} + +static int get_tdx_sys_info_tdmr(struct tdx_sys_info_tdmr *sysinfo_tdmr) +{ + int ret = 0; + u64 val; + + if (!ret && !(ret = read_sys_metadata_field(0x9100000100000008, &val))) + sysinfo_tdmr->max_tdmrs = val; + if (!ret && !(ret = read_sys_metadata_field(0x9100000100000009, &val))) + sysinfo_tdmr->max_reserved_per_tdmr = val; + if (!ret && !(ret = read_sys_metadata_field(0x9100000100000010, &val))) + sysinfo_tdmr->pamt_4k_entry_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9100000100000011, &val))) + sysinfo_tdmr->pamt_2m_entry_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9100000100000012, &val))) + sysinfo_tdmr->pamt_1g_entry_size = val; + + return ret; +} + +static int get_tdx_sys_info_td_ctrl(struct tdx_sys_info_td_ctrl *sysinfo_td_ctrl) +{ + int ret = 0; + u64 val; + + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000000, &val))) + sysinfo_td_ctrl->tdr_base_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000100, &val))) + sysinfo_td_ctrl->tdcs_base_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000200, &val))) + sysinfo_td_ctrl->tdvps_base_size = val; + + return ret; +} + +static int get_tdx_sys_info_td_conf(struct tdx_sys_info_td_conf *sysinfo_td_conf) +{ + int ret = 0; + u64 val; + int i, j; + + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000000, &val))) + sysinfo_td_conf->attributes_fixed0 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000001, &val))) + sysinfo_td_conf->attributes_fixed1 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000002, &val))) + sysinfo_td_conf->xfam_fixed0 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000003, &val))) + sysinfo_td_conf->xfam_fixed1 = val; + if (!ret && !(ret = read_sys_metadata_field(0x9900000100000004, &val))) + sysinfo_td_conf->num_cpuid_config = val; + if (!ret && !(ret = read_sys_metadata_field(0x9900000100000008, &val))) + sysinfo_td_conf->max_vcpus_per_td = val; + if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_leaves)) + return -EINVAL; + for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++) + if (!ret && !(ret = read_sys_metadata_field(0x9900000300000400 + i, &val))) + sysinfo_td_conf->cpuid_config_leaves[i] = val; + if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_values)) + return -EINVAL; + for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++) + for (j = 0; j < 2; j++) + if (!ret && !(ret = read_sys_metadata_field(0x9900000300000500 + i * 2 + j, &val))) + sysinfo_td_conf->cpuid_config_values[i][j] = val; + + return ret; +} + +static int get_tdx_sys_info(struct tdx_sys_info *sysinfo) +{ + int ret = 0; + + ret = ret ?: get_tdx_sys_info_features(&sysinfo->features); + ret = ret ?: get_tdx_sys_info_tdmr(&sysinfo->tdmr); + ret = ret ?: get_tdx_sys_info_td_ctrl(&sysinfo->td_ctrl); + ret = ret ?: get_tdx_sys_info_td_conf(&sysinfo->td_conf); + + return ret; +} |