Janosch Frank | fa624cc | 2020-12-07 04:38:46 -0500 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Perform Frame Management Function (pfmf) tests |
| 4 | * |
| 5 | * Copyright (c) 2018 IBM |
| 6 | * |
| 7 | * Authors: |
| 8 | * Janosch Frank <frankja@linux.vnet.ibm.com> |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 9 | */ |
| 10 | #include <libcflat.h> |
| 11 | #include <asm/asm-offsets.h> |
| 12 | #include <asm/interrupt.h> |
| 13 | #include <asm/page.h> |
| 14 | #include <asm/facility.h> |
| 15 | #include <asm/mem.h> |
| 16 | |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 17 | static uint8_t pagebuf[PAGE_SIZE * 256] __attribute__((aligned(PAGE_SIZE * 256))); |
| 18 | |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 19 | static void test_priv(void) |
| 20 | { |
Janosch Frank | e4654a1 | 2018-09-19 15:14:14 +0200 | [diff] [blame] | 21 | report_prefix_push("privileged"); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 22 | expect_pgm_int(); |
| 23 | enter_pstate(); |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 24 | pfmf(0, pagebuf); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 25 | check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); |
Janosch Frank | e4654a1 | 2018-09-19 15:14:14 +0200 | [diff] [blame] | 26 | report_prefix_pop(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 27 | } |
| 28 | |
| 29 | static void test_4k_key(void) |
| 30 | { |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 31 | union pfmf_r1 r1; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 32 | union skey skey; |
| 33 | |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 34 | report_prefix_push("4K"); |
Janosch Frank | 47df95c | 2019-08-28 13:36:15 +0200 | [diff] [blame] | 35 | if (test_facility(169)) { |
| 36 | report_skip("storage key removal facility is active"); |
| 37 | goto out; |
| 38 | } |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 39 | r1.val = 0; |
| 40 | r1.reg.sk = 1; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 41 | r1.reg.fsc = PFMF_FSC_4K; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 42 | r1.reg.key = 0x30; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 43 | pfmf(r1.val, pagebuf); |
Janosch Frank | 7b9ca99 | 2019-08-28 13:36:13 +0200 | [diff] [blame] | 44 | skey.val = get_storage_key(pagebuf); |
Janosch Frank | d0bfafd | 2019-02-06 09:46:56 +0100 | [diff] [blame] | 45 | skey.val &= SKEY_ACC | SKEY_FP; |
Thomas Huth | a299895 | 2019-12-06 12:31:02 +0100 | [diff] [blame] | 46 | report(skey.val == 0x30, "set storage keys"); |
Janosch Frank | 47df95c | 2019-08-28 13:36:15 +0200 | [diff] [blame] | 47 | out: |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 48 | report_prefix_pop(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | static void test_1m_key(void) |
| 52 | { |
| 53 | int i; |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 54 | bool rp = true; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 55 | union pfmf_r1 r1; |
Janosch Frank | d0bfafd | 2019-02-06 09:46:56 +0100 | [diff] [blame] | 56 | union skey skey; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 57 | |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 58 | report_prefix_push("1M"); |
Janosch Frank | 47df95c | 2019-08-28 13:36:15 +0200 | [diff] [blame] | 59 | if (test_facility(169)) { |
| 60 | report_skip("storage key removal facility is active"); |
| 61 | goto out; |
| 62 | } |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 63 | r1.val = 0; |
| 64 | r1.reg.sk = 1; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 65 | r1.reg.fsc = PFMF_FSC_1M; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 66 | r1.reg.key = 0x30; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 67 | pfmf(r1.val, pagebuf); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 68 | for (i = 0; i < 256; i++) { |
Janosch Frank | 7b9ca99 | 2019-08-28 13:36:13 +0200 | [diff] [blame] | 69 | skey.val = get_storage_key(pagebuf + i * PAGE_SIZE); |
Janosch Frank | d0bfafd | 2019-02-06 09:46:56 +0100 | [diff] [blame] | 70 | skey.val &= SKEY_ACC | SKEY_FP; |
| 71 | if (skey.val != 0x30) { |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 72 | rp = false; |
| 73 | break; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 74 | } |
| 75 | } |
Thomas Huth | a299895 | 2019-12-06 12:31:02 +0100 | [diff] [blame] | 76 | report(rp, "set storage keys"); |
Janosch Frank | 47df95c | 2019-08-28 13:36:15 +0200 | [diff] [blame] | 77 | out: |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 78 | report_prefix_pop(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | static void test_4k_clear(void) |
| 82 | { |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 83 | union pfmf_r1 r1; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 84 | |
| 85 | r1.val = 0; |
| 86 | r1.reg.cf = 1; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 87 | r1.reg.fsc = PFMF_FSC_4K; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 88 | |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 89 | report_prefix_push("4K"); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 90 | memset(pagebuf, 42, PAGE_SIZE); |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 91 | pfmf(r1.val, pagebuf); |
Thomas Huth | a299895 | 2019-12-06 12:31:02 +0100 | [diff] [blame] | 92 | report(!memcmp(pagebuf, pagebuf + PAGE_SIZE, PAGE_SIZE), |
| 93 | "clear memory"); |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 94 | report_prefix_pop(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | static void test_1m_clear(void) |
| 98 | { |
| 99 | int i; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 100 | union pfmf_r1 r1; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 101 | unsigned long sum = 0; |
| 102 | |
| 103 | r1.val = 0; |
| 104 | r1.reg.cf = 1; |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 105 | r1.reg.fsc = PFMF_FSC_1M; |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 106 | |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 107 | report_prefix_push("1M"); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 108 | memset(pagebuf, 42, PAGE_SIZE * 256); |
Janosch Frank | 6f9a99f | 2019-08-28 13:36:12 +0200 | [diff] [blame] | 109 | pfmf(r1.val, pagebuf); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 110 | for (i = 0; i < PAGE_SIZE * 256; i++) |
| 111 | sum |= pagebuf[i]; |
Thomas Huth | a299895 | 2019-12-06 12:31:02 +0100 | [diff] [blame] | 112 | report(!sum, "clear memory"); |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 113 | report_prefix_pop(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 114 | } |
| 115 | |
Nico Boehr | 36b3a89 | 2022-02-24 16:43:30 +0100 | [diff] [blame] | 116 | static void test_low_addr_prot(void) |
| 117 | { |
| 118 | union pfmf_r1 r1 = { |
| 119 | .reg.cf = 1, |
| 120 | .reg.fsc = PFMF_FSC_4K |
| 121 | }; |
| 122 | |
| 123 | report_prefix_push("low-address protection"); |
| 124 | |
| 125 | report_prefix_push("0x1000"); |
| 126 | expect_pgm_int(); |
| 127 | low_prot_enable(); |
| 128 | pfmf(r1.val, (void *)0x1000); |
| 129 | low_prot_disable(); |
| 130 | check_pgm_int_code(PGM_INT_CODE_PROTECTION); |
| 131 | report_prefix_pop(); |
| 132 | |
| 133 | report_prefix_push("0x0"); |
| 134 | expect_pgm_int(); |
| 135 | low_prot_enable(); |
| 136 | pfmf(r1.val, 0); |
| 137 | low_prot_disable(); |
| 138 | check_pgm_int_code(PGM_INT_CODE_PROTECTION); |
| 139 | report_prefix_pop(); |
| 140 | |
| 141 | report_prefix_pop(); |
| 142 | } |
| 143 | |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 144 | int main(void) |
| 145 | { |
| 146 | bool has_edat = test_facility(8); |
| 147 | |
| 148 | report_prefix_push("pfmf"); |
Thomas Huth | 90016cc | 2018-06-14 20:25:15 +0200 | [diff] [blame] | 149 | if (!has_edat) { |
| 150 | report_skip("PFMF is not available"); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 151 | goto done; |
Thomas Huth | 90016cc | 2018-06-14 20:25:15 +0200 | [diff] [blame] | 152 | } |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 153 | |
| 154 | test_priv(); |
Nico Boehr | 36b3a89 | 2022-02-24 16:43:30 +0100 | [diff] [blame] | 155 | test_low_addr_prot(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 156 | /* Force the buffer pages in */ |
| 157 | memset(pagebuf, 0, PAGE_SIZE * 256); |
| 158 | |
| 159 | test_4k_key(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 160 | test_4k_clear(); |
Janosch Frank | c952b3d | 2019-02-28 09:35:38 +0100 | [diff] [blame] | 161 | test_1m_key(); |
Janosch Frank | ffdfc62 | 2018-03-27 13:55:17 +0200 | [diff] [blame] | 162 | test_1m_clear(); |
| 163 | |
| 164 | done: |
| 165 | report_prefix_pop(); |
| 166 | return report_summary(); |
| 167 | } |