Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
Heiko Carstens | 94f5b09 | 2009-03-26 15:23:50 +0100 | [diff] [blame] | 3 | * Copyright IBM Corp. 2001, 2009 |
| 4 | * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, |
| 5 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | */ |
| 7 | |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 8 | #include <linux/debugfs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <linux/kernel.h> |
| 10 | #include <linux/mm.h> |
| 11 | #include <linux/proc_fs.h> |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 12 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/init.h> |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 14 | #include <linux/delay.h> |
Paul Gortmaker | 3994a52 | 2017-02-09 15:20:23 -0500 | [diff] [blame] | 15 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 16 | #include <linux/slab.h> |
Heiko Carstens | d09a307 | 2022-02-28 11:22:12 +0100 | [diff] [blame] | 17 | #include <asm/asm-extable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <asm/ebcdic.h> |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 19 | #include <asm/debug.h> |
Christian Borntraeger | aa24f7f | 2008-04-17 07:46:09 +0200 | [diff] [blame] | 20 | #include <asm/sysinfo.h> |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 21 | #include <asm/cpcmd.h> |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 22 | #include <asm/topology.h> |
Heiko Carstens | 9c20323 | 2015-07-01 13:19:19 +0200 | [diff] [blame] | 23 | #include <asm/fpu/api.h> |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 24 | |
Heiko Carstens | fade4dc4 | 2012-09-04 14:26:03 +0200 | [diff] [blame] | 25 | int topology_max_mnest; |
| 26 | |
Heiko Carstens | 2c79813 | 2016-06-20 14:05:54 +0200 | [diff] [blame] | 27 | static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | { |
Heiko Carstens | 5fe2983 | 2021-06-14 19:54:42 +0200 | [diff] [blame] | 29 | int r0 = (fc << 28) | sel1; |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 30 | int rc = 0; |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 31 | |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 32 | asm volatile( |
Heiko Carstens | 5fe2983 | 2021-06-14 19:54:42 +0200 | [diff] [blame] | 33 | " lr 0,%[r0]\n" |
| 34 | " lr 1,%[r1]\n" |
| 35 | " stsi 0(%[sysinfo])\n" |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 36 | "0: jz 2f\n" |
Heiko Carstens | 5fe2983 | 2021-06-14 19:54:42 +0200 | [diff] [blame] | 37 | "1: lhi %[rc],%[retval]\n" |
| 38 | "2: lr %[r0],0\n" |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 39 | EX_TABLE(0b, 1b) |
Heiko Carstens | 5fe2983 | 2021-06-14 19:54:42 +0200 | [diff] [blame] | 40 | : [r0] "+d" (r0), [rc] "+d" (rc) |
| 41 | : [r1] "d" (sel2), |
| 42 | [sysinfo] "a" (sysinfo), |
| 43 | [retval] "K" (-EOPNOTSUPP) |
| 44 | : "cc", "0", "1", "memory"); |
Heiko Carstens | 2c79813 | 2016-06-20 14:05:54 +0200 | [diff] [blame] | 45 | *lvl = ((unsigned int) r0) >> 28; |
| 46 | return rc; |
| 47 | } |
| 48 | |
| 49 | /* |
| 50 | * stsi - store system information |
| 51 | * |
| 52 | * Returns the current configuration level if function code 0 was specified. |
| 53 | * Otherwise returns 0 on success or a negative value on error. |
| 54 | */ |
| 55 | int stsi(void *sysinfo, int fc, int sel1, int sel2) |
| 56 | { |
| 57 | int lvl, rc; |
| 58 | |
| 59 | rc = __stsi(sysinfo, fc, sel1, sel2, &lvl); |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 60 | if (rc) |
| 61 | return rc; |
Heiko Carstens | 2c79813 | 2016-06-20 14:05:54 +0200 | [diff] [blame] | 62 | return fc ? 0 : lvl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 64 | EXPORT_SYMBOL(stsi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Heiko Carstens | 9f35b81 | 2018-07-02 10:54:02 +0200 | [diff] [blame] | 66 | #ifdef CONFIG_PROC_FS |
| 67 | |
Viktor Mihajlovski | e32eae1 | 2016-11-10 14:32:59 +0100 | [diff] [blame] | 68 | static bool convert_ext_name(unsigned char encoding, char *name, size_t len) |
| 69 | { |
| 70 | switch (encoding) { |
| 71 | case 1: /* EBCDIC */ |
| 72 | EBCASC(name, len); |
| 73 | break; |
| 74 | case 2: /* UTF-8 */ |
| 75 | break; |
| 76 | default: |
| 77 | return false; |
| 78 | } |
| 79 | return true; |
| 80 | } |
| 81 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 82 | static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 84 | int i; |
| 85 | |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 86 | if (stsi(info, 1, 1, 1)) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 87 | return; |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 88 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); |
| 89 | EBCASC(info->type, sizeof(info->type)); |
| 90 | EBCASC(info->model, sizeof(info->model)); |
| 91 | EBCASC(info->sequence, sizeof(info->sequence)); |
| 92 | EBCASC(info->plant, sizeof(info->plant)); |
| 93 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); |
Martin Schwidefsky | cbce70e | 2008-04-17 07:46:10 +0200 | [diff] [blame] | 94 | EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); |
| 95 | EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 96 | seq_printf(m, "Manufacturer: %-16.16s\n", info->manufacturer); |
| 97 | seq_printf(m, "Type: %-4.4s\n", info->type); |
Hendrik Brueckner | 5260b0f | 2018-01-24 16:19:53 +0100 | [diff] [blame] | 98 | if (info->lic) |
| 99 | seq_printf(m, "LIC Identifier: %016lx\n", info->lic); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 100 | /* |
| 101 | * Sigh: the model field has been renamed with System z9 |
| 102 | * to model_capacity and a new model field has been added |
| 103 | * after the plant field. To avoid confusing older programs |
| 104 | * the "Model:" prints "model_capacity model" or just |
| 105 | * "model_capacity" if the model string is empty . |
| 106 | */ |
| 107 | seq_printf(m, "Model: %-16.16s", info->model_capacity); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 108 | if (info->model[0] != '\0') |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 109 | seq_printf(m, " %-16.16s", info->model); |
| 110 | seq_putc(m, '\n'); |
| 111 | seq_printf(m, "Sequence Code: %-16.16s\n", info->sequence); |
| 112 | seq_printf(m, "Plant: %-4.4s\n", info->plant); |
| 113 | seq_printf(m, "Model Capacity: %-16.16s %08u\n", |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 114 | info->model_capacity, info->model_cap_rating); |
| 115 | if (info->model_perm_cap_rating) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 116 | seq_printf(m, "Model Perm. Capacity: %-16.16s %08u\n", |
| 117 | info->model_perm_cap, |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 118 | info->model_perm_cap_rating); |
| 119 | if (info->model_temp_cap_rating) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 120 | seq_printf(m, "Model Temp. Capacity: %-16.16s %08u\n", |
| 121 | info->model_temp_cap, |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 122 | info->model_temp_cap_rating); |
| 123 | if (info->ncr) |
| 124 | seq_printf(m, "Nominal Cap. Rating: %08u\n", info->ncr); |
| 125 | if (info->npr) |
| 126 | seq_printf(m, "Nominal Perm. Rating: %08u\n", info->npr); |
| 127 | if (info->ntr) |
| 128 | seq_printf(m, "Nominal Temp. Rating: %08u\n", info->ntr); |
Heiko Carstens | 7aca2ed | 2010-10-25 16:10:16 +0200 | [diff] [blame] | 129 | if (info->cai) { |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 130 | seq_printf(m, "Capacity Adj. Ind.: %d\n", info->cai); |
| 131 | seq_printf(m, "Capacity Ch. Reason: %d\n", info->ccr); |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 132 | seq_printf(m, "Capacity Transient: %d\n", info->t); |
| 133 | } |
| 134 | if (info->p) { |
| 135 | for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) { |
| 136 | seq_printf(m, "Type %d Percentage: %d\n", |
| 137 | i, info->typepct[i - 1]); |
| 138 | } |
Heiko Carstens | 7aca2ed | 2010-10-25 16:10:16 +0200 | [diff] [blame] | 139 | } |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 140 | } |
| 141 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 142 | static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info) |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 143 | { |
Christian Borntraeger | e527aec | 2015-12-07 13:08:48 +0100 | [diff] [blame] | 144 | int i; |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 145 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 146 | seq_putc(m, '\n'); |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 147 | if (!MACHINE_HAS_TOPOLOGY) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 148 | return; |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 149 | if (stsi(info, 15, 1, topology_max_mnest)) |
| 150 | return; |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 151 | seq_printf(m, "CPU Topology HW: "); |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 152 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 153 | seq_printf(m, " %d", info->mag[i]); |
| 154 | seq_putc(m, '\n'); |
Heiko Carstens | 9236b4d | 2015-12-28 13:20:43 +0100 | [diff] [blame] | 155 | #ifdef CONFIG_SCHED_TOPOLOGY |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 156 | store_topology(info); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 157 | seq_printf(m, "CPU Topology SW: "); |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 158 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 159 | seq_printf(m, " %d", info->mag[i]); |
| 160 | seq_putc(m, '\n'); |
Heiko Carstens | 8d11e02 | 2010-10-29 16:50:37 +0200 | [diff] [blame] | 161 | #endif |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 162 | } |
| 163 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 164 | static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info) |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 165 | { |
| 166 | struct sysinfo_1_2_2_extension *ext; |
| 167 | int i; |
| 168 | |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 169 | if (stsi(info, 1, 2, 2)) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 170 | return; |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 171 | ext = (struct sysinfo_1_2_2_extension *) |
| 172 | ((unsigned long) info + info->acc_offset); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 173 | seq_printf(m, "CPUs Total: %d\n", info->cpus_total); |
| 174 | seq_printf(m, "CPUs Configured: %d\n", info->cpus_configured); |
| 175 | seq_printf(m, "CPUs Standby: %d\n", info->cpus_standby); |
| 176 | seq_printf(m, "CPUs Reserved: %d\n", info->cpus_reserved); |
Heiko Carstens | 7022ec4 | 2015-12-30 13:42:37 +0100 | [diff] [blame] | 177 | if (info->mt_installed) { |
| 178 | seq_printf(m, "CPUs G-MTID: %d\n", info->mt_gtid); |
| 179 | seq_printf(m, "CPUs S-MTID: %d\n", info->mt_stid); |
| 180 | } |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 181 | /* |
| 182 | * Sigh 2. According to the specification the alternate |
| 183 | * capability field is a 32 bit floating point number |
| 184 | * if the higher order 8 bits are not zero. Printing |
| 185 | * a floating point number in the kernel is a no-no, |
| 186 | * always print the number as 32 bit unsigned integer. |
| 187 | * The user-space needs to know about the strange |
| 188 | * encoding of the alternate cpu capability. |
| 189 | */ |
| 190 | seq_printf(m, "Capability: %u", info->capability); |
| 191 | if (info->format == 1) |
| 192 | seq_printf(m, " %u", ext->alt_capability); |
| 193 | seq_putc(m, '\n'); |
Heiko Carstens | 25502f0 | 2012-09-03 14:05:05 +0200 | [diff] [blame] | 194 | if (info->nominal_cap) |
| 195 | seq_printf(m, "Nominal Capability: %d\n", info->nominal_cap); |
| 196 | if (info->secondary_cap) |
| 197 | seq_printf(m, "Secondary Capability: %d\n", info->secondary_cap); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 198 | for (i = 2; i <= info->cpus_total; i++) { |
| 199 | seq_printf(m, "Adjustment %02d-way: %u", |
| 200 | i, info->adjustment[i-2]); |
| 201 | if (info->format == 1) |
| 202 | seq_printf(m, " %u", ext->alt_adjustment[i-2]); |
| 203 | seq_putc(m, '\n'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } |
| 206 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 207 | static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info) |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 208 | { |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 209 | if (stsi(info, 2, 2, 2)) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 210 | return; |
Heiko Carstens | 94f5b09 | 2009-03-26 15:23:50 +0100 | [diff] [blame] | 211 | EBCASC(info->name, sizeof(info->name)); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 212 | seq_putc(m, '\n'); |
| 213 | seq_printf(m, "LPAR Number: %d\n", info->lpar_number); |
| 214 | seq_printf(m, "LPAR Characteristics: "); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 215 | if (info->characteristics & LPAR_CHAR_DEDICATED) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 216 | seq_printf(m, "Dedicated "); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 217 | if (info->characteristics & LPAR_CHAR_SHARED) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 218 | seq_printf(m, "Shared "); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 219 | if (info->characteristics & LPAR_CHAR_LIMITED) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 220 | seq_printf(m, "Limited "); |
| 221 | seq_putc(m, '\n'); |
| 222 | seq_printf(m, "LPAR Name: %-8.8s\n", info->name); |
| 223 | seq_printf(m, "LPAR Adjustment: %d\n", info->caf); |
| 224 | seq_printf(m, "LPAR CPUs Total: %d\n", info->cpus_total); |
| 225 | seq_printf(m, "LPAR CPUs Configured: %d\n", info->cpus_configured); |
| 226 | seq_printf(m, "LPAR CPUs Standby: %d\n", info->cpus_standby); |
| 227 | seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved); |
| 228 | seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated); |
| 229 | seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared); |
Heiko Carstens | 7022ec4 | 2015-12-30 13:42:37 +0100 | [diff] [blame] | 230 | if (info->mt_installed) { |
| 231 | seq_printf(m, "LPAR CPUs G-MTID: %d\n", info->mt_gtid); |
| 232 | seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid); |
| 233 | seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid); |
Martin Schwidefsky | 10ad34b | 2015-01-14 17:52:10 +0100 | [diff] [blame] | 234 | } |
Viktor Mihajlovski | e32eae1 | 2016-11-10 14:32:59 +0100 | [diff] [blame] | 235 | if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) { |
| 236 | seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name); |
| 237 | seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid); |
| 238 | } |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 239 | } |
| 240 | |
Ekaterina Tumanova | f3d0bd6 | 2014-10-20 15:24:31 +0200 | [diff] [blame] | 241 | static void print_ext_name(struct seq_file *m, int lvl, |
| 242 | struct sysinfo_3_2_2 *info) |
| 243 | { |
Viktor Mihajlovski | e32eae1 | 2016-11-10 14:32:59 +0100 | [diff] [blame] | 244 | size_t len = sizeof(info->ext_names[lvl]); |
| 245 | |
| 246 | if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len)) |
Ekaterina Tumanova | f3d0bd6 | 2014-10-20 15:24:31 +0200 | [diff] [blame] | 247 | return; |
Ekaterina Tumanova | f3d0bd6 | 2014-10-20 15:24:31 +0200 | [diff] [blame] | 248 | seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl, |
| 249 | info->ext_names[lvl]); |
| 250 | } |
| 251 | |
| 252 | static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info) |
| 253 | { |
Christoph Hellwig | e64e17a | 2017-05-11 14:00:57 +0200 | [diff] [blame] | 254 | if (uuid_is_null(&info->vm[i].uuid)) |
Ekaterina Tumanova | f3d0bd6 | 2014-10-20 15:24:31 +0200 | [diff] [blame] | 255 | return; |
| 256 | seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid); |
| 257 | } |
| 258 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 259 | static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info) |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 260 | { |
| 261 | int i; |
| 262 | |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 263 | if (stsi(info, 3, 2, 2)) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 264 | return; |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 265 | for (i = 0; i < info->count; i++) { |
Heiko Carstens | 94f5b09 | 2009-03-26 15:23:50 +0100 | [diff] [blame] | 266 | EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); |
| 267 | EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 268 | seq_putc(m, '\n'); |
| 269 | seq_printf(m, "VM%02d Name: %-8.8s\n", i, info->vm[i].name); |
| 270 | seq_printf(m, "VM%02d Control Program: %-16.16s\n", i, info->vm[i].cpi); |
| 271 | seq_printf(m, "VM%02d Adjustment: %d\n", i, info->vm[i].caf); |
| 272 | seq_printf(m, "VM%02d CPUs Total: %d\n", i, info->vm[i].cpus_total); |
| 273 | seq_printf(m, "VM%02d CPUs Configured: %d\n", i, info->vm[i].cpus_configured); |
| 274 | seq_printf(m, "VM%02d CPUs Standby: %d\n", i, info->vm[i].cpus_standby); |
| 275 | seq_printf(m, "VM%02d CPUs Reserved: %d\n", i, info->vm[i].cpus_reserved); |
Ekaterina Tumanova | f3d0bd6 | 2014-10-20 15:24:31 +0200 | [diff] [blame] | 276 | print_ext_name(m, i, info); |
| 277 | print_uuid(m, i, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 281 | static int sysinfo_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 283 | void *info = (void *)get_zeroed_page(GFP_KERNEL); |
| 284 | int level; |
Heiko Carstens | 94f5b09 | 2009-03-26 15:23:50 +0100 | [diff] [blame] | 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | if (!info) |
| 287 | return 0; |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 288 | level = stsi(NULL, 0, 0, 0); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 289 | if (level >= 1) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 290 | stsi_1_1_1(m, info); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 291 | if (level >= 1) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 292 | stsi_15_1_x(m, info); |
Heiko Carstens | 96f4a70 | 2010-10-25 16:10:54 +0200 | [diff] [blame] | 293 | if (level >= 1) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 294 | stsi_1_2_2(m, info); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 295 | if (level >= 2) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 296 | stsi_2_2_2(m, info); |
Martin Schwidefsky | 0fee644 | 2006-09-20 15:59:10 +0200 | [diff] [blame] | 297 | if (level >= 3) |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 298 | stsi_3_2_2(m, info); |
| 299 | free_page((unsigned long)info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | return 0; |
| 301 | } |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 302 | |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 303 | static int __init sysinfo_create_proc(void) |
| 304 | { |
Christoph Hellwig | 3f3942a | 2018-05-15 15:57:23 +0200 | [diff] [blame] | 305 | proc_create_single("sysinfo", 0444, NULL, sysinfo_show); |
Heiko Carstens | 0facaa1 | 2012-09-03 09:38:30 +0200 | [diff] [blame] | 306 | return 0; |
| 307 | } |
| 308 | device_initcall(sysinfo_create_proc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Heiko Carstens | 9f35b81 | 2018-07-02 10:54:02 +0200 | [diff] [blame] | 310 | #endif /* CONFIG_PROC_FS */ |
| 311 | |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 312 | /* |
| 313 | * Service levels interface. |
| 314 | */ |
| 315 | |
| 316 | static DECLARE_RWSEM(service_level_sem); |
| 317 | static LIST_HEAD(service_level_list); |
| 318 | |
| 319 | int register_service_level(struct service_level *slr) |
| 320 | { |
| 321 | struct service_level *ptr; |
| 322 | |
| 323 | down_write(&service_level_sem); |
| 324 | list_for_each_entry(ptr, &service_level_list, list) |
| 325 | if (ptr == slr) { |
| 326 | up_write(&service_level_sem); |
| 327 | return -EEXIST; |
| 328 | } |
| 329 | list_add_tail(&slr->list, &service_level_list); |
| 330 | up_write(&service_level_sem); |
| 331 | return 0; |
| 332 | } |
| 333 | EXPORT_SYMBOL(register_service_level); |
| 334 | |
| 335 | int unregister_service_level(struct service_level *slr) |
| 336 | { |
| 337 | struct service_level *ptr, *next; |
| 338 | int rc = -ENOENT; |
| 339 | |
| 340 | down_write(&service_level_sem); |
| 341 | list_for_each_entry_safe(ptr, next, &service_level_list, list) { |
| 342 | if (ptr != slr) |
| 343 | continue; |
| 344 | list_del(&ptr->list); |
| 345 | rc = 0; |
| 346 | break; |
| 347 | } |
| 348 | up_write(&service_level_sem); |
| 349 | return rc; |
| 350 | } |
| 351 | EXPORT_SYMBOL(unregister_service_level); |
| 352 | |
| 353 | static void *service_level_start(struct seq_file *m, loff_t *pos) |
| 354 | { |
| 355 | down_read(&service_level_sem); |
| 356 | return seq_list_start(&service_level_list, *pos); |
| 357 | } |
| 358 | |
| 359 | static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) |
| 360 | { |
| 361 | return seq_list_next(p, &service_level_list, pos); |
| 362 | } |
| 363 | |
| 364 | static void service_level_stop(struct seq_file *m, void *p) |
| 365 | { |
| 366 | up_read(&service_level_sem); |
| 367 | } |
| 368 | |
| 369 | static int service_level_show(struct seq_file *m, void *p) |
| 370 | { |
| 371 | struct service_level *slr; |
| 372 | |
| 373 | slr = list_entry(p, struct service_level, list); |
| 374 | slr->seq_print(m, slr); |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | static const struct seq_operations service_level_seq_ops = { |
| 379 | .start = service_level_start, |
| 380 | .next = service_level_next, |
| 381 | .stop = service_level_stop, |
| 382 | .show = service_level_show |
| 383 | }; |
| 384 | |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 385 | static void service_level_vm_print(struct seq_file *m, |
| 386 | struct service_level *slr) |
| 387 | { |
| 388 | char *query_buffer, *str; |
| 389 | |
| 390 | query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); |
| 391 | if (!query_buffer) |
| 392 | return; |
| 393 | cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); |
| 394 | str = strchr(query_buffer, '\n'); |
| 395 | if (str) |
| 396 | *str = 0; |
| 397 | seq_printf(m, "VM: %s\n", query_buffer); |
| 398 | kfree(query_buffer); |
| 399 | } |
| 400 | |
| 401 | static struct service_level service_level_vm = { |
| 402 | .seq_print = service_level_vm_print |
| 403 | }; |
| 404 | |
| 405 | static __init int create_proc_service_level(void) |
| 406 | { |
Christoph Hellwig | fddda2b | 2018-04-13 19:44:18 +0200 | [diff] [blame] | 407 | proc_create_seq("service_levels", 0, NULL, &service_level_seq_ops); |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 408 | if (MACHINE_IS_VM) |
| 409 | register_service_level(&service_level_vm); |
| 410 | return 0; |
| 411 | } |
Martin Schwidefsky | 6bcac50 | 2008-12-25 13:38:49 +0100 | [diff] [blame] | 412 | subsys_initcall(create_proc_service_level); |
| 413 | |
| 414 | /* |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 415 | * CPU capability might have changed. Therefore recalculate loops_per_jiffy. |
| 416 | */ |
| 417 | void s390_adjust_jiffies(void) |
| 418 | { |
| 419 | struct sysinfo_1_2_2 *info; |
Heiko Carstens | 9c20323 | 2015-07-01 13:19:19 +0200 | [diff] [blame] | 420 | unsigned long capability; |
| 421 | struct kernel_fpu fpu; |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 422 | |
| 423 | info = (void *) get_zeroed_page(GFP_KERNEL); |
| 424 | if (!info) |
| 425 | return; |
| 426 | |
Heiko Carstens | caf757c | 2012-09-06 14:42:13 +0200 | [diff] [blame] | 427 | if (stsi(info, 1, 2, 2) == 0) { |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 428 | /* |
| 429 | * Major sigh. The cpu capability encoding is "special". |
| 430 | * If the first 9 bits of info->capability are 0 then it |
| 431 | * is a 32 bit unsigned integer in the range 0 .. 2^23. |
| 432 | * If the first 9 bits are != 0 then it is a 32 bit float. |
| 433 | * In addition a lower value indicates a proportionally |
| 434 | * higher cpu capacity. Bogomips are the other way round. |
| 435 | * To get to a halfway suitable number we divide 1e7 |
| 436 | * by the cpu capability number. Yes, that means a floating |
Heiko Carstens | 9c20323 | 2015-07-01 13:19:19 +0200 | [diff] [blame] | 437 | * point division .. |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 438 | */ |
Heiko Carstens | 9c20323 | 2015-07-01 13:19:19 +0200 | [diff] [blame] | 439 | kernel_fpu_begin(&fpu, KERNEL_FPR); |
| 440 | asm volatile( |
| 441 | " sfpc %3\n" |
| 442 | " l %0,%1\n" |
| 443 | " tmlh %0,0xff80\n" |
| 444 | " jnz 0f\n" |
| 445 | " cefbr %%f2,%0\n" |
| 446 | " j 1f\n" |
| 447 | "0: le %%f2,%1\n" |
| 448 | "1: cefbr %%f0,%2\n" |
| 449 | " debr %%f0,%%f2\n" |
| 450 | " cgebr %0,5,%%f0\n" |
| 451 | : "=&d" (capability) |
| 452 | : "Q" (info->capability), "d" (10000000), "d" (0) |
| 453 | : "cc" |
| 454 | ); |
Martin Schwidefsky | 7f79695 | 2016-08-22 12:06:21 +0200 | [diff] [blame] | 455 | kernel_fpu_end(&fpu, KERNEL_FPR); |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 456 | } else |
| 457 | /* |
| 458 | * Really old machine without stsi block for basic |
| 459 | * cpu information. Report 42.0 bogomips. |
| 460 | */ |
| 461 | capability = 42; |
| 462 | loops_per_jiffy = capability * (500000/HZ); |
| 463 | free_page((unsigned long) info); |
| 464 | } |
| 465 | |
| 466 | /* |
| 467 | * calibrate the delay loop |
| 468 | */ |
Paul Gortmaker | e2741f1 | 2013-06-18 17:04:52 -0400 | [diff] [blame] | 469 | void calibrate_delay(void) |
Martin Schwidefsky | 31ee4b2 | 2007-02-05 21:18:31 +0100 | [diff] [blame] | 470 | { |
| 471 | s390_adjust_jiffies(); |
| 472 | /* Print the good old Bogomips line .. */ |
| 473 | printk(KERN_DEBUG "Calibrating delay loop (skipped)... " |
| 474 | "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ), |
| 475 | (loops_per_jiffy/(5000/HZ)) % 100); |
| 476 | } |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 477 | |
| 478 | #ifdef CONFIG_DEBUG_FS |
| 479 | |
| 480 | #define STSI_FILE(fc, s1, s2) \ |
| 481 | static int stsi_open_##fc##_##s1##_##s2(struct inode *inode, struct file *file)\ |
| 482 | { \ |
| 483 | file->private_data = (void *) get_zeroed_page(GFP_KERNEL); \ |
| 484 | if (!file->private_data) \ |
| 485 | return -ENOMEM; \ |
| 486 | if (stsi(file->private_data, fc, s1, s2)) { \ |
| 487 | free_page((unsigned long)file->private_data); \ |
| 488 | file->private_data = NULL; \ |
| 489 | return -EACCES; \ |
| 490 | } \ |
| 491 | return nonseekable_open(inode, file); \ |
| 492 | } \ |
| 493 | \ |
| 494 | static const struct file_operations stsi_##fc##_##s1##_##s2##_fs_ops = { \ |
| 495 | .open = stsi_open_##fc##_##s1##_##s2, \ |
| 496 | .release = stsi_release, \ |
| 497 | .read = stsi_read, \ |
| 498 | .llseek = no_llseek, \ |
| 499 | }; |
| 500 | |
| 501 | static int stsi_release(struct inode *inode, struct file *file) |
| 502 | { |
| 503 | free_page((unsigned long)file->private_data); |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static ssize_t stsi_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) |
| 508 | { |
| 509 | return simple_read_from_buffer(buf, size, ppos, file->private_data, PAGE_SIZE); |
| 510 | } |
| 511 | |
Heiko Carstens | cdd3bd9 | 2017-03-13 16:15:06 +0100 | [diff] [blame] | 512 | STSI_FILE( 1, 1, 1); |
| 513 | STSI_FILE( 1, 2, 1); |
| 514 | STSI_FILE( 1, 2, 2); |
| 515 | STSI_FILE( 2, 2, 1); |
| 516 | STSI_FILE( 2, 2, 2); |
| 517 | STSI_FILE( 3, 2, 2); |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 518 | STSI_FILE(15, 1, 2); |
| 519 | STSI_FILE(15, 1, 3); |
| 520 | STSI_FILE(15, 1, 4); |
| 521 | STSI_FILE(15, 1, 5); |
| 522 | STSI_FILE(15, 1, 6); |
| 523 | |
| 524 | struct stsi_file { |
| 525 | const struct file_operations *fops; |
| 526 | char *name; |
| 527 | }; |
| 528 | |
| 529 | static struct stsi_file stsi_file[] __initdata = { |
Heiko Carstens | cdd3bd9 | 2017-03-13 16:15:06 +0100 | [diff] [blame] | 530 | {.fops = &stsi_1_1_1_fs_ops, .name = "1_1_1"}, |
| 531 | {.fops = &stsi_1_2_1_fs_ops, .name = "1_2_1"}, |
| 532 | {.fops = &stsi_1_2_2_fs_ops, .name = "1_2_2"}, |
| 533 | {.fops = &stsi_2_2_1_fs_ops, .name = "2_2_1"}, |
| 534 | {.fops = &stsi_2_2_2_fs_ops, .name = "2_2_2"}, |
| 535 | {.fops = &stsi_3_2_2_fs_ops, .name = "3_2_2"}, |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 536 | {.fops = &stsi_15_1_2_fs_ops, .name = "15_1_2"}, |
| 537 | {.fops = &stsi_15_1_3_fs_ops, .name = "15_1_3"}, |
| 538 | {.fops = &stsi_15_1_4_fs_ops, .name = "15_1_4"}, |
| 539 | {.fops = &stsi_15_1_5_fs_ops, .name = "15_1_5"}, |
| 540 | {.fops = &stsi_15_1_6_fs_ops, .name = "15_1_6"}, |
| 541 | }; |
| 542 | |
Heiko Carstens | cdd3bd9 | 2017-03-13 16:15:06 +0100 | [diff] [blame] | 543 | static u8 stsi_0_0_0; |
| 544 | |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 545 | static __init int stsi_init_debugfs(void) |
| 546 | { |
| 547 | struct dentry *stsi_root; |
| 548 | struct stsi_file *sf; |
Heiko Carstens | cdd3bd9 | 2017-03-13 16:15:06 +0100 | [diff] [blame] | 549 | int lvl, i; |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 550 | |
| 551 | stsi_root = debugfs_create_dir("stsi", arch_debugfs_dir); |
Heiko Carstens | cdd3bd9 | 2017-03-13 16:15:06 +0100 | [diff] [blame] | 552 | lvl = stsi(NULL, 0, 0, 0); |
| 553 | if (lvl > 0) |
| 554 | stsi_0_0_0 = lvl; |
| 555 | debugfs_create_u8("0_0_0", 0400, stsi_root, &stsi_0_0_0); |
Heiko Carstens | ae5ca67 | 2017-03-13 15:58:59 +0100 | [diff] [blame] | 556 | for (i = 0; i < ARRAY_SIZE(stsi_file); i++) { |
| 557 | sf = &stsi_file[i]; |
| 558 | debugfs_create_file(sf->name, 0400, stsi_root, NULL, sf->fops); |
| 559 | } |
| 560 | if (IS_ENABLED(CONFIG_SCHED_TOPOLOGY) && MACHINE_HAS_TOPOLOGY) { |
| 561 | char link_to[10]; |
| 562 | |
| 563 | sprintf(link_to, "15_1_%d", topology_mnest_limit()); |
| 564 | debugfs_create_symlink("topology", stsi_root, link_to); |
| 565 | } |
| 566 | return 0; |
| 567 | } |
| 568 | device_initcall(stsi_init_debugfs); |
| 569 | |
| 570 | #endif /* CONFIG_DEBUG_FS */ |