18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci#include <asm/uv.h> 38c2ecf20Sopenharmony_ci#include <asm/facility.h> 48c2ecf20Sopenharmony_ci#include <asm/sections.h> 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci/* will be used in arch/s390/kernel/uv.c */ 78c2ecf20Sopenharmony_ci#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 88c2ecf20Sopenharmony_ciint __bootdata_preserved(prot_virt_guest); 98c2ecf20Sopenharmony_ci#endif 108c2ecf20Sopenharmony_ci#if IS_ENABLED(CONFIG_KVM) 118c2ecf20Sopenharmony_ciint __bootdata_preserved(prot_virt_host); 128c2ecf20Sopenharmony_ci#endif 138c2ecf20Sopenharmony_cistruct uv_info __bootdata_preserved(uv_info); 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_civoid uv_query_info(void) 168c2ecf20Sopenharmony_ci{ 178c2ecf20Sopenharmony_ci struct uv_cb_qui uvcb = { 188c2ecf20Sopenharmony_ci .header.cmd = UVC_CMD_QUI, 198c2ecf20Sopenharmony_ci .header.len = sizeof(uvcb) 208c2ecf20Sopenharmony_ci }; 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci if (!test_facility(158)) 238c2ecf20Sopenharmony_ci return; 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci /* rc==0x100 means that there is additional data we do not process */ 268c2ecf20Sopenharmony_ci if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100) 278c2ecf20Sopenharmony_ci return; 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci if (IS_ENABLED(CONFIG_KVM)) { 308c2ecf20Sopenharmony_ci memcpy(uv_info.inst_calls_list, uvcb.inst_calls_list, sizeof(uv_info.inst_calls_list)); 318c2ecf20Sopenharmony_ci uv_info.uv_base_stor_len = uvcb.uv_base_stor_len; 328c2ecf20Sopenharmony_ci uv_info.guest_base_stor_len = uvcb.conf_base_phys_stor_len; 338c2ecf20Sopenharmony_ci uv_info.guest_virt_base_stor_len = uvcb.conf_base_virt_stor_len; 348c2ecf20Sopenharmony_ci uv_info.guest_virt_var_stor_len = uvcb.conf_virt_var_stor_len; 358c2ecf20Sopenharmony_ci uv_info.guest_cpu_stor_len = uvcb.cpu_stor_len; 368c2ecf20Sopenharmony_ci uv_info.max_sec_stor_addr = ALIGN(uvcb.max_guest_stor_addr, PAGE_SIZE); 378c2ecf20Sopenharmony_ci uv_info.max_num_sec_conf = uvcb.max_num_sec_conf; 388c2ecf20Sopenharmony_ci uv_info.max_guest_cpu_id = uvcb.max_guest_cpu_id; 398c2ecf20Sopenharmony_ci uv_info.uv_feature_indications = uvcb.uv_feature_indications; 408c2ecf20Sopenharmony_ci } 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 438c2ecf20Sopenharmony_ci if (test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list) && 448c2ecf20Sopenharmony_ci test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list)) 458c2ecf20Sopenharmony_ci prot_virt_guest = 1; 468c2ecf20Sopenharmony_ci#endif 478c2ecf20Sopenharmony_ci} 48