15abb9351SVasily Gorbik // SPDX-License-Identifier: GPL-2.0 25abb9351SVasily Gorbik #include <asm/uv.h> 35abb9351SVasily Gorbik #include <asm/facility.h> 45abb9351SVasily Gorbik #include <asm/sections.h> 55abb9351SVasily Gorbik 6ecdc5d84SVasily Gorbik /* will be used in arch/s390/kernel/uv.c */ 7ecdc5d84SVasily Gorbik #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 85abb9351SVasily Gorbik int __bootdata_preserved(prot_virt_guest); 9ecdc5d84SVasily Gorbik #endif 10ecdc5d84SVasily Gorbik #if IS_ENABLED(CONFIG_KVM) 11ecdc5d84SVasily Gorbik struct uv_info __bootdata_preserved(uv_info); 12ecdc5d84SVasily Gorbik #endif 135abb9351SVasily Gorbik 145abb9351SVasily Gorbik void uv_query_info(void) 155abb9351SVasily Gorbik { 165abb9351SVasily Gorbik struct uv_cb_qui uvcb = { 175abb9351SVasily Gorbik .header.cmd = UVC_CMD_QUI, 185abb9351SVasily Gorbik .header.len = sizeof(uvcb) 195abb9351SVasily Gorbik }; 205abb9351SVasily Gorbik 215abb9351SVasily Gorbik if (!test_facility(158)) 225abb9351SVasily Gorbik return; 235abb9351SVasily Gorbik 2427dc0700SChristian Borntraeger /* rc==0x100 means that there is additional data we do not process */ 2527dc0700SChristian Borntraeger if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100) 265abb9351SVasily Gorbik return; 275abb9351SVasily Gorbik 28ecdc5d84SVasily Gorbik if (IS_ENABLED(CONFIG_KVM)) { 29ecdc5d84SVasily Gorbik memcpy(uv_info.inst_calls_list, uvcb.inst_calls_list, sizeof(uv_info.inst_calls_list)); 30ecdc5d84SVasily Gorbik uv_info.uv_base_stor_len = uvcb.uv_base_stor_len; 31ecdc5d84SVasily Gorbik uv_info.guest_base_stor_len = uvcb.conf_base_phys_stor_len; 32ecdc5d84SVasily Gorbik uv_info.guest_virt_base_stor_len = uvcb.conf_base_virt_stor_len; 33ecdc5d84SVasily Gorbik uv_info.guest_virt_var_stor_len = uvcb.conf_virt_var_stor_len; 34ecdc5d84SVasily Gorbik uv_info.guest_cpu_stor_len = uvcb.cpu_stor_len; 35ecdc5d84SVasily Gorbik uv_info.max_sec_stor_addr = ALIGN(uvcb.max_guest_stor_addr, PAGE_SIZE); 36ecdc5d84SVasily Gorbik uv_info.max_num_sec_conf = uvcb.max_num_sec_conf; 37ecdc5d84SVasily Gorbik uv_info.max_guest_cpus = uvcb.max_guest_cpus; 38ecdc5d84SVasily Gorbik } 39ecdc5d84SVasily Gorbik 40ecdc5d84SVasily Gorbik #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 415abb9351SVasily Gorbik if (test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list) && 425abb9351SVasily Gorbik test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list)) 435abb9351SVasily Gorbik prot_virt_guest = 1; 44ecdc5d84SVasily Gorbik #endif 455abb9351SVasily Gorbik } 46