1 /* 2 * Store System Information tests 3 * 4 * Copyright (c) 2019 IBM Corp 5 * 6 * Authors: 7 * Janosch Frank <frankja@linux.ibm.com> 8 * 9 * This code is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU Library General Public License version 2. 11 */ 12 13 #include <libcflat.h> 14 #include <asm/page.h> 15 #include <asm/asm-offsets.h> 16 #include <asm/interrupt.h> 17 18 static uint8_t pagebuf[PAGE_SIZE * 2] __attribute__((aligned(PAGE_SIZE * 2))); 19 20 static void test_specs(void) 21 { 22 report_prefix_push("specification"); 23 24 report_prefix_push("inv r0"); 25 expect_pgm_int(); 26 stsi(pagebuf, 0, 1 << 8, 0); 27 check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); 28 report_prefix_pop(); 29 30 report_prefix_push("inv r1"); 31 expect_pgm_int(); 32 stsi(pagebuf, 1, 0, 1 << 16); 33 check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); 34 report_prefix_pop(); 35 36 report_prefix_push("unaligned"); 37 expect_pgm_int(); 38 stsi(pagebuf + 42, 1, 1, 1); 39 check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); 40 report_prefix_pop(); 41 42 report_prefix_pop(); 43 } 44 45 static void test_priv(void) 46 { 47 report_prefix_push("privileged"); 48 expect_pgm_int(); 49 enter_pstate(); 50 stsi(pagebuf, 0, 0, 0); 51 check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); 52 report_prefix_pop(); 53 } 54 55 static inline unsigned long stsi_get_fc(void *addr) 56 { 57 register unsigned long r0 asm("0") = 0; 58 register unsigned long r1 asm("1") = 0; 59 int cc; 60 61 asm volatile("stsi 0(%[addr])\n" 62 "ipm %[cc]\n" 63 "srl %[cc],28\n" 64 : "+d" (r0), [cc] "=d" (cc) 65 : "d" (r1), [addr] "a" (addr) 66 : "cc", "memory"); 67 assert(!cc); 68 return r0 >> 28; 69 } 70 71 static void test_fc(void) 72 { 73 report(stsi(pagebuf, 7, 0, 0) == 3, "invalid fc"); 74 report(stsi(pagebuf, 1, 0, 1) == 3, "invalid selector 1"); 75 report(stsi(pagebuf, 1, 1, 0) == 3, "invalid selector 2"); 76 report(stsi_get_fc(pagebuf) >= 2, "query fc >= 2"); 77 } 78 79 int main(void) 80 { 81 report_prefix_push("stsi"); 82 test_priv(); 83 test_specs(); 84 test_fc(); 85 return report_summary(); 86 } 87