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 65abb9351SVasily Gorbik int __bootdata_preserved(prot_virt_guest); 75abb9351SVasily Gorbik 85abb9351SVasily Gorbik void uv_query_info(void) 95abb9351SVasily Gorbik { 105abb9351SVasily Gorbik struct uv_cb_qui uvcb = { 115abb9351SVasily Gorbik .header.cmd = UVC_CMD_QUI, 125abb9351SVasily Gorbik .header.len = sizeof(uvcb) 135abb9351SVasily Gorbik }; 145abb9351SVasily Gorbik 155abb9351SVasily Gorbik if (!test_facility(158)) 165abb9351SVasily Gorbik return; 175abb9351SVasily Gorbik 1827dc0700SChristian Borntraeger /* rc==0x100 means that there is additional data we do not process */ 1927dc0700SChristian Borntraeger if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100) 205abb9351SVasily Gorbik return; 215abb9351SVasily Gorbik 225abb9351SVasily Gorbik if (test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list) && 235abb9351SVasily Gorbik test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list)) 245abb9351SVasily Gorbik prot_virt_guest = 1; 255abb9351SVasily Gorbik } 26