Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PowerPC64 LPAR Configuration Information Driver |
| 3 | * |
| 4 | * Dave Engebretsen engebret@us.ibm.com |
| 5 | * Copyright (c) 2003 Dave Engebretsen |
| 6 | * Will Schmidt willschm@us.ibm.com |
| 7 | * SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation. |
| 8 | * seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation. |
| 9 | * Nathan Lynch nathanl@austin.ibm.com |
| 10 | * Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License |
| 14 | * as published by the Free Software Foundation; either version |
| 15 | * 2 of the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This driver creates a proc file at /proc/ppc64/lparcfg which contains |
| 18 | * keyword - value pairs that specify the configuration of the partition. |
| 19 | */ |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/types.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/proc_fs.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/seq_file.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <asm/uaccess.h> |
Kelly Daly | 15b1718 | 2005-11-02 11:55:28 +1100 | [diff] [blame] | 29 | #include <asm/iseries/hv_lp_config.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <asm/lppaca.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <asm/hvcall.h> |
Stephen Rothwell | 1ababe1 | 2005-08-03 14:35:25 +1000 | [diff] [blame] | 32 | #include <asm/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/rtas.h> |
| 34 | #include <asm/system.h> |
| 35 | #include <asm/time.h> |
Michael Ellerman | 856509d | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 36 | #include <asm/prom.h> |
Paul Mackerras | 271c3f3 | 2005-11-11 23:04:40 +1100 | [diff] [blame] | 37 | #include <asm/vdso_datapage.h> |
Nathan Fontenot | 22e1a4d | 2008-07-24 04:31:52 +1000 | [diff] [blame] | 38 | #include <asm/vio.h> |
Brian King | 46db2f8 | 2009-08-28 12:06:29 +0000 | [diff] [blame] | 39 | #include <asm/mmu.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Vaidyanathan Srinivasan | 6fe9d1f | 2010-03-31 21:39:24 +0000 | [diff] [blame] | 41 | #define MODULE_VERS "1.9" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #define MODULE_NAME "lparcfg" |
| 43 | |
| 44 | /* #define LPARCFG_DEBUG */ |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | static struct proc_dir_entry *proc_ppc64_lparcfg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 49 | * Track sum of all purrs across all processors. This is used to further |
| 50 | * calculate usage values by different applications |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | */ |
| 52 | static unsigned long get_purr(void) |
| 53 | { |
| 54 | unsigned long sum_purr = 0; |
| 55 | int cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
KAMEZAWA Hiroyuki | 0e55195 | 2006-03-28 14:50:51 -0800 | [diff] [blame] | 57 | for_each_possible_cpu(cpu) { |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 58 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
| 59 | sum_purr += lppaca[cpu].emulated_time_base; |
| 60 | else { |
| 61 | struct cpu_usage *cu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 63 | cu = &per_cpu(cpu_usage_array, cpu); |
| 64 | sum_purr += cu->current_tb; |
| 65 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | } |
| 67 | return sum_purr; |
| 68 | } |
| 69 | |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 70 | #ifdef CONFIG_PPC_ISERIES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
David Gibson | d3d2176 | 2005-11-10 15:26:20 +1100 | [diff] [blame] | 72 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | * Methods used to fetch LPAR data when running on an iSeries platform. |
| 74 | */ |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 75 | static int iseries_lparcfg_data(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | { |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 77 | unsigned long pool_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | int shared, entitled_capacity, max_entitled_capacity; |
| 79 | int processors, max_processors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | unsigned long purr = get_purr(); |
| 81 | |
Hugh Dickins | 048c8bc | 2006-11-01 05:44:54 +1100 | [diff] [blame] | 82 | shared = (int)(local_paca->lppaca_ptr->shared_proc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | seq_printf(m, "system_active_processors=%d\n", |
| 85 | (int)HvLpConfig_getSystemPhysicalProcessors()); |
| 86 | |
| 87 | seq_printf(m, "system_potential_processors=%d\n", |
| 88 | (int)HvLpConfig_getSystemPhysicalProcessors()); |
| 89 | |
| 90 | processors = (int)HvLpConfig_getPhysicalProcessors(); |
| 91 | seq_printf(m, "partition_active_processors=%d\n", processors); |
| 92 | |
| 93 | max_processors = (int)HvLpConfig_getMaxPhysicalProcessors(); |
| 94 | seq_printf(m, "partition_potential_processors=%d\n", max_processors); |
| 95 | |
| 96 | if (shared) { |
| 97 | entitled_capacity = HvLpConfig_getSharedProcUnits(); |
| 98 | max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits(); |
| 99 | } else { |
| 100 | entitled_capacity = processors * 100; |
| 101 | max_entitled_capacity = max_processors * 100; |
| 102 | } |
| 103 | seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity); |
| 104 | |
| 105 | seq_printf(m, "partition_max_entitled_capacity=%d\n", |
| 106 | max_entitled_capacity); |
| 107 | |
| 108 | if (shared) { |
| 109 | pool_id = HvLpConfig_getSharedPoolIndex(); |
| 110 | seq_printf(m, "pool=%d\n", (int)pool_id); |
| 111 | seq_printf(m, "pool_capacity=%d\n", |
| 112 | (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) * |
| 113 | 100)); |
| 114 | seq_printf(m, "purr=%ld\n", purr); |
| 115 | } |
| 116 | |
| 117 | seq_printf(m, "shared_processor_mode=%d\n", shared); |
| 118 | |
| 119 | return 0; |
| 120 | } |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 121 | |
| 122 | #else /* CONFIG_PPC_ISERIES */ |
| 123 | |
| 124 | static int iseries_lparcfg_data(struct seq_file *m, void *v) |
| 125 | { |
| 126 | return 0; |
| 127 | } |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | #endif /* CONFIG_PPC_ISERIES */ |
| 130 | |
| 131 | #ifdef CONFIG_PPC_PSERIES |
David Gibson | d3d2176 | 2005-11-10 15:26:20 +1100 | [diff] [blame] | 132 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | * Methods used to fetch LPAR data when running on a pSeries platform. |
| 134 | */ |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 135 | /** |
| 136 | * h_get_mpp |
| 137 | * H_GET_MPP hcall returns info in 7 parms |
| 138 | */ |
| 139 | int h_get_mpp(struct hvcall_mpp_data *mpp_data) |
| 140 | { |
| 141 | int rc; |
| 142 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
| 143 | |
| 144 | rc = plpar_hcall9(H_GET_MPP, retbuf); |
| 145 | |
| 146 | mpp_data->entitled_mem = retbuf[0]; |
| 147 | mpp_data->mapped_mem = retbuf[1]; |
| 148 | |
| 149 | mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; |
| 150 | mpp_data->pool_num = retbuf[2] & 0xffff; |
| 151 | |
| 152 | mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff; |
| 153 | mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff; |
| 154 | mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffff; |
| 155 | |
| 156 | mpp_data->pool_size = retbuf[4]; |
| 157 | mpp_data->loan_request = retbuf[5]; |
| 158 | mpp_data->backing_mem = retbuf[6]; |
| 159 | |
| 160 | return rc; |
| 161 | } |
| 162 | EXPORT_SYMBOL(h_get_mpp); |
| 163 | |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 164 | struct hvcall_ppp_data { |
| 165 | u64 entitlement; |
| 166 | u64 unallocated_entitlement; |
| 167 | u16 group_num; |
| 168 | u16 pool_num; |
| 169 | u8 capped; |
| 170 | u8 weight; |
| 171 | u8 unallocated_weight; |
| 172 | u16 active_procs_in_pool; |
| 173 | u16 active_system_procs; |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 174 | u16 phys_platform_procs; |
| 175 | u32 max_proc_cap_avail; |
| 176 | u32 entitled_proc_cap_avail; |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 177 | }; |
| 178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | /* |
| 180 | * H_GET_PPP hcall returns info in 4 parms. |
| 181 | * entitled_capacity,unallocated_capacity, |
| 182 | * aggregation, resource_capability). |
| 183 | * |
David Gibson | d3d2176 | 2005-11-10 15:26:20 +1100 | [diff] [blame] | 184 | * R4 = Entitled Processor Capacity Percentage. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | * R5 = Unallocated Processor Capacity Percentage. |
| 186 | * R6 (AABBCCDDEEFFGGHH). |
| 187 | * XXXX - reserved (0) |
| 188 | * XXXX - reserved (0) |
| 189 | * XXXX - Group Number |
| 190 | * XXXX - Pool Number. |
| 191 | * R7 (IIJJKKLLMMNNOOPP). |
| 192 | * XX - reserved. (0) |
| 193 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. |
| 194 | * XX - variable processor Capacity Weight |
| 195 | * XX - Unallocated Variable Processor Capacity Weight. |
| 196 | * XXXX - Active processors in Physical Processor Pool. |
David Gibson | d3d2176 | 2005-11-10 15:26:20 +1100 | [diff] [blame] | 197 | * XXXX - Processors active on platform. |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 198 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
| 199 | * XXXX - Physical platform procs allocated to virtualization. |
| 200 | * XXXXXX - Max procs capacity % available to the partitions pool. |
| 201 | * XXXXXX - Entitled procs capacity % available to the |
| 202 | * partitions pool. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | */ |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 204 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
| 206 | unsigned long rc; |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 207 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
Anton Blanchard | b9377ff | 2006-07-19 08:01:28 +1000 | [diff] [blame] | 208 | |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 209 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
Anton Blanchard | b9377ff | 2006-07-19 08:01:28 +1000 | [diff] [blame] | 210 | |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 211 | ppp_data->entitlement = retbuf[0]; |
| 212 | ppp_data->unallocated_entitlement = retbuf[1]; |
| 213 | |
| 214 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; |
| 215 | ppp_data->pool_num = retbuf[2] & 0xffff; |
| 216 | |
| 217 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; |
| 218 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; |
| 219 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; |
| 220 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; |
| 221 | ppp_data->active_system_procs = retbuf[3] & 0xffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 223 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
| 224 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; |
| 225 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | return rc; |
| 228 | } |
| 229 | |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 230 | static unsigned h_pic(unsigned long *pool_idle_time, |
| 231 | unsigned long *num_procs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | { |
| 233 | unsigned long rc; |
Anton Blanchard | b9377ff | 2006-07-19 08:01:28 +1000 | [diff] [blame] | 234 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
| 235 | |
| 236 | rc = plpar_hcall(H_PIC, retbuf); |
| 237 | |
| 238 | *pool_idle_time = retbuf[0]; |
| 239 | *num_procs = retbuf[1]; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 240 | |
| 241 | return rc; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * parse_ppp_data |
| 246 | * Parse out the data returned from h_get_ppp and h_pic |
| 247 | */ |
| 248 | static void parse_ppp_data(struct seq_file *m) |
| 249 | { |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 250 | struct hvcall_ppp_data ppp_data; |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 251 | struct device_node *root; |
| 252 | const int *perf_level; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 253 | int rc; |
| 254 | |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 255 | rc = h_get_ppp(&ppp_data); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 256 | if (rc) |
| 257 | return; |
| 258 | |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 259 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 260 | ppp_data.entitlement); |
| 261 | seq_printf(m, "group=%d\n", ppp_data.group_num); |
| 262 | seq_printf(m, "system_active_processors=%d\n", |
| 263 | ppp_data.active_system_procs); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 264 | |
| 265 | /* pool related entries are apropriate for shared configs */ |
| 266 | if (lppaca[0].shared_proc) { |
| 267 | unsigned long pool_idle_time, pool_procs; |
| 268 | |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 269 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 270 | |
| 271 | /* report pool_capacity in percentage */ |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 272 | seq_printf(m, "pool_capacity=%d\n", |
| 273 | ppp_data.active_procs_in_pool * 100); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 274 | |
| 275 | h_pic(&pool_idle_time, &pool_procs); |
| 276 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); |
| 277 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); |
| 278 | } |
| 279 | |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 280 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
| 281 | ppp_data.unallocated_weight); |
| 282 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); |
| 283 | seq_printf(m, "capped=%d\n", ppp_data.capped); |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 284 | seq_printf(m, "unallocated_capacity=%lld\n", |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 285 | ppp_data.unallocated_entitlement); |
Nathan Fontenot | f03cdb3 | 2009-05-27 04:41:21 +0000 | [diff] [blame] | 286 | |
| 287 | /* The last bits of information returned from h_get_ppp are only |
| 288 | * valid if the ibm,partition-performance-parameters-level |
| 289 | * property is >= 1. |
| 290 | */ |
| 291 | root = of_find_node_by_path("/"); |
| 292 | if (root) { |
| 293 | perf_level = of_get_property(root, |
| 294 | "ibm,partition-performance-parameters-level", |
| 295 | NULL); |
| 296 | if (perf_level && (*perf_level >= 1)) { |
| 297 | seq_printf(m, |
| 298 | "physical_procs_allocated_to_virtualization=%d\n", |
| 299 | ppp_data.phys_platform_procs); |
| 300 | seq_printf(m, "max_proc_capacity_available=%d\n", |
| 301 | ppp_data.max_proc_cap_avail); |
| 302 | seq_printf(m, "entitled_proc_capacity_available=%d\n", |
| 303 | ppp_data.entitled_proc_cap_avail); |
| 304 | } |
| 305 | |
| 306 | of_node_put(root); |
| 307 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 310 | /** |
| 311 | * parse_mpp_data |
| 312 | * Parse out data returned from h_get_mpp |
| 313 | */ |
| 314 | static void parse_mpp_data(struct seq_file *m) |
| 315 | { |
| 316 | struct hvcall_mpp_data mpp_data; |
| 317 | int rc; |
| 318 | |
| 319 | rc = h_get_mpp(&mpp_data); |
| 320 | if (rc) |
| 321 | return; |
| 322 | |
| 323 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); |
| 324 | |
| 325 | if (mpp_data.mapped_mem != -1) |
| 326 | seq_printf(m, "mapped_entitled_memory=%ld\n", |
| 327 | mpp_data.mapped_mem); |
| 328 | |
| 329 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); |
| 330 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); |
| 331 | |
| 332 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); |
| 333 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", |
| 334 | mpp_data.unallocated_mem_weight); |
| 335 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", |
| 336 | mpp_data.unallocated_entitlement); |
| 337 | |
| 338 | if (mpp_data.pool_size != -1) |
| 339 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", |
| 340 | mpp_data.pool_size); |
| 341 | |
| 342 | seq_printf(m, "entitled_memory_loan_request=%ld\n", |
| 343 | mpp_data.loan_request); |
| 344 | |
| 345 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); |
| 346 | } |
| 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | #define SPLPAR_CHARACTERISTICS_TOKEN 20 |
| 349 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) |
| 350 | |
| 351 | /* |
| 352 | * parse_system_parameter_string() |
| 353 | * Retrieve the potential_processors, max_entitled_capacity and friends |
| 354 | * through the get-system-parameter rtas call. Replace keyword strings as |
| 355 | * necessary. |
| 356 | */ |
| 357 | static void parse_system_parameter_string(struct seq_file *m) |
| 358 | { |
| 359 | int call_status; |
| 360 | |
Will Schmidt | 34422fe | 2006-03-31 09:07:48 -0600 | [diff] [blame] | 361 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | if (!local_buffer) { |
Frans Pop | 8354be9 | 2010-02-06 07:47:20 +0000 | [diff] [blame] | 363 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 364 | __FILE__, __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | return; |
| 366 | } |
| 367 | |
| 368 | spin_lock(&rtas_data_buf_lock); |
| 369 | memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); |
| 370 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, |
| 371 | NULL, |
| 372 | SPLPAR_CHARACTERISTICS_TOKEN, |
Will Schmidt | 34422fe | 2006-03-31 09:07:48 -0600 | [diff] [blame] | 373 | __pa(rtas_data_buf), |
| 374 | RTAS_DATA_BUF_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); |
| 376 | spin_unlock(&rtas_data_buf_lock); |
| 377 | |
| 378 | if (call_status != 0) { |
| 379 | printk(KERN_INFO |
| 380 | "%s %s Error calling get-system-parameter (0x%x)\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 381 | __FILE__, __func__, call_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } else { |
| 383 | int splpar_strlen; |
| 384 | int idx, w_idx; |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 385 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | if (!workbuffer) { |
Frans Pop | 8354be9 | 2010-02-06 07:47:20 +0000 | [diff] [blame] | 387 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 388 | __FILE__, __func__, __LINE__); |
David Gibson | d3d2176 | 2005-11-10 15:26:20 +1100 | [diff] [blame] | 389 | kfree(local_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | return; |
| 391 | } |
| 392 | #ifdef LPARCFG_DEBUG |
Frans Pop | 8354be9 | 2010-02-06 07:47:20 +0000 | [diff] [blame] | 393 | printk(KERN_INFO "success calling get-system-parameter\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | #endif |
Will Schmidt | 34422fe | 2006-03-31 09:07:48 -0600 | [diff] [blame] | 395 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | local_buffer += 2; /* step over strlen value */ |
| 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | w_idx = 0; |
| 399 | idx = 0; |
| 400 | while ((*local_buffer) && (idx < splpar_strlen)) { |
| 401 | workbuffer[w_idx++] = local_buffer[idx++]; |
| 402 | if ((local_buffer[idx] == ',') |
| 403 | || (local_buffer[idx] == '\0')) { |
| 404 | workbuffer[w_idx] = '\0'; |
| 405 | if (w_idx) { |
| 406 | /* avoid the empty string */ |
| 407 | seq_printf(m, "%s\n", workbuffer); |
| 408 | } |
| 409 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); |
| 410 | idx++; /* skip the comma */ |
| 411 | w_idx = 0; |
| 412 | } else if (local_buffer[idx] == '=') { |
| 413 | /* code here to replace workbuffer contents |
| 414 | with different keyword strings */ |
| 415 | if (0 == strcmp(workbuffer, "MaxEntCap")) { |
| 416 | strcpy(workbuffer, |
| 417 | "partition_max_entitled_capacity"); |
| 418 | w_idx = strlen(workbuffer); |
| 419 | } |
| 420 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { |
| 421 | strcpy(workbuffer, |
| 422 | "system_potential_processors"); |
| 423 | w_idx = strlen(workbuffer); |
| 424 | } |
| 425 | } |
| 426 | } |
| 427 | kfree(workbuffer); |
| 428 | local_buffer -= 2; /* back up over strlen value */ |
| 429 | } |
| 430 | kfree(local_buffer); |
| 431 | } |
| 432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | /* Return the number of processors in the system. |
| 434 | * This function reads through the device tree and counts |
| 435 | * the virtual processors, this does not include threads. |
| 436 | */ |
| 437 | static int lparcfg_count_active_processors(void) |
| 438 | { |
| 439 | struct device_node *cpus_dn = NULL; |
| 440 | int count = 0; |
| 441 | |
| 442 | while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) { |
| 443 | #ifdef LPARCFG_DEBUG |
Frans Pop | 8354be9 | 2010-02-06 07:47:20 +0000 | [diff] [blame] | 444 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | #endif |
| 446 | count++; |
| 447 | } |
| 448 | return count; |
| 449 | } |
| 450 | |
Brian King | ffa5abb | 2008-07-24 04:30:58 +1000 | [diff] [blame] | 451 | static void pseries_cmo_data(struct seq_file *m) |
| 452 | { |
| 453 | int cpu; |
| 454 | unsigned long cmo_faults = 0; |
| 455 | unsigned long cmo_fault_time = 0; |
| 456 | |
Robert Jennings | ac22429 | 2008-08-16 05:10:18 +1000 | [diff] [blame] | 457 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
| 458 | |
Brian King | ffa5abb | 2008-07-24 04:30:58 +1000 | [diff] [blame] | 459 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
| 460 | return; |
| 461 | |
| 462 | for_each_possible_cpu(cpu) { |
| 463 | cmo_faults += lppaca[cpu].cmo_faults; |
| 464 | cmo_fault_time += lppaca[cpu].cmo_fault_time; |
| 465 | } |
| 466 | |
| 467 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); |
| 468 | seq_printf(m, "cmo_fault_time_usec=%lu\n", |
| 469 | cmo_fault_time / tb_ticks_per_usec); |
Robert Jennings | ac22429 | 2008-08-16 05:10:18 +1000 | [diff] [blame] | 470 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
| 471 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); |
| 472 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); |
Brian King | ffa5abb | 2008-07-24 04:30:58 +1000 | [diff] [blame] | 473 | } |
| 474 | |
Anton Blanchard | 0559f0a | 2009-03-31 20:12:44 +0000 | [diff] [blame] | 475 | static void splpar_dispatch_data(struct seq_file *m) |
| 476 | { |
| 477 | int cpu; |
| 478 | unsigned long dispatches = 0; |
| 479 | unsigned long dispatch_dispersions = 0; |
| 480 | |
| 481 | for_each_possible_cpu(cpu) { |
| 482 | dispatches += lppaca[cpu].yield_count; |
| 483 | dispatch_dispersions += lppaca[cpu].dispersion_count; |
| 484 | } |
| 485 | |
| 486 | seq_printf(m, "dispatches=%lu\n", dispatches); |
| 487 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); |
| 488 | } |
| 489 | |
Vaidyanathan Srinivasan | 6fe9d1f | 2010-03-31 21:39:24 +0000 | [diff] [blame] | 490 | static void parse_em_data(struct seq_file *m) |
| 491 | { |
| 492 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
| 493 | |
| 494 | if (plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS) |
| 495 | seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]); |
| 496 | } |
| 497 | |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 498 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | { |
| 500 | int partition_potential_processors; |
| 501 | int partition_active_processors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | struct device_node *rtas_node; |
Jeremy Kerr | a7f67bd | 2006-07-12 15:35:54 +1000 | [diff] [blame] | 503 | const int *lrdrp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
Stephen Rothwell | 8c8dc32 | 2007-04-24 13:50:55 +1000 | [diff] [blame] | 505 | rtas_node = of_find_node_by_path("/rtas"); |
Olof Johansson | 2b9a32e | 2006-02-15 21:40:44 -0600 | [diff] [blame] | 506 | if (rtas_node) |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 507 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
| 509 | if (lrdrp == NULL) { |
Paul Mackerras | 271c3f3 | 2005-11-11 23:04:40 +1100 | [diff] [blame] | 510 | partition_potential_processors = vdso_data->processorCount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | } else { |
| 512 | partition_potential_processors = *(lrdrp + 4); |
| 513 | } |
Stephen Rothwell | 8c8dc32 | 2007-04-24 13:50:55 +1000 | [diff] [blame] | 514 | of_node_put(rtas_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | partition_active_processors = lparcfg_count_active_processors(); |
| 517 | |
Stephen Rothwell | 1ababe1 | 2005-08-03 14:35:25 +1000 | [diff] [blame] | 518 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | /* this call handles the ibm,get-system-parameter contents */ |
| 520 | parse_system_parameter_string(m); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 521 | parse_ppp_data(m); |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 522 | parse_mpp_data(m); |
Brian King | ffa5abb | 2008-07-24 04:30:58 +1000 | [diff] [blame] | 523 | pseries_cmo_data(m); |
Anton Blanchard | 0559f0a | 2009-03-31 20:12:44 +0000 | [diff] [blame] | 524 | splpar_dispatch_data(m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 526 | seq_printf(m, "purr=%ld\n", get_purr()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } else { /* non SPLPAR case */ |
| 528 | |
| 529 | seq_printf(m, "system_active_processors=%d\n", |
| 530 | partition_potential_processors); |
| 531 | |
| 532 | seq_printf(m, "system_potential_processors=%d\n", |
| 533 | partition_potential_processors); |
| 534 | |
| 535 | seq_printf(m, "partition_max_entitled_capacity=%d\n", |
| 536 | partition_potential_processors * 100); |
| 537 | |
| 538 | seq_printf(m, "partition_entitled_capacity=%d\n", |
| 539 | partition_active_processors * 100); |
| 540 | } |
| 541 | |
| 542 | seq_printf(m, "partition_active_processors=%d\n", |
| 543 | partition_active_processors); |
| 544 | |
| 545 | seq_printf(m, "partition_potential_processors=%d\n", |
| 546 | partition_potential_processors); |
| 547 | |
David Gibson | 3356bb9f7 | 2006-01-13 10:26:42 +1100 | [diff] [blame] | 548 | seq_printf(m, "shared_processor_mode=%d\n", lppaca[0].shared_proc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Brian King | 46db2f8 | 2009-08-28 12:06:29 +0000 | [diff] [blame] | 550 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
| 551 | |
Vaidyanathan Srinivasan | 6fe9d1f | 2010-03-31 21:39:24 +0000 | [diff] [blame] | 552 | parse_em_data(m); |
| 553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | return 0; |
| 555 | } |
| 556 | |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 557 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
| 558 | { |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 559 | struct hvcall_ppp_data ppp_data; |
| 560 | u8 new_weight; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 561 | u64 new_entitled; |
| 562 | ssize_t retval; |
| 563 | |
| 564 | /* Get our current parameters */ |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 565 | retval = h_get_ppp(&ppp_data); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 566 | if (retval) |
| 567 | return retval; |
| 568 | |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 569 | if (entitlement) { |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 570 | new_weight = ppp_data.weight; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 571 | new_entitled = *entitlement; |
| 572 | } else if (weight) { |
| 573 | new_weight = *weight; |
Robert Jennings | 398778f | 2008-07-24 04:28:05 +1000 | [diff] [blame] | 574 | new_entitled = ppp_data.entitlement; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 575 | } else |
| 576 | return -EINVAL; |
| 577 | |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 578 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
Harvey Harrison | 5df72bf | 2008-07-31 05:29:03 +1000 | [diff] [blame] | 579 | __func__, ppp_data.entitlement, ppp_data.weight); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 580 | |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 581 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
Harvey Harrison | 5df72bf | 2008-07-31 05:29:03 +1000 | [diff] [blame] | 582 | __func__, new_entitled, new_weight); |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 583 | |
| 584 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); |
| 585 | return retval; |
| 586 | } |
| 587 | |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 588 | /** |
| 589 | * update_mpp |
| 590 | * |
| 591 | * Update the memory entitlement and weight for the partition. Caller must |
| 592 | * specify either a new entitlement or weight, not both, to be updated |
| 593 | * since the h_set_mpp call takes both entitlement and weight as parameters. |
| 594 | */ |
| 595 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) |
| 596 | { |
| 597 | struct hvcall_mpp_data mpp_data; |
| 598 | u64 new_entitled; |
| 599 | u8 new_weight; |
| 600 | ssize_t rc; |
| 601 | |
Nathan Fontenot | 22e1a4d | 2008-07-24 04:31:52 +1000 | [diff] [blame] | 602 | if (entitlement) { |
| 603 | /* Check with vio to ensure the new memory entitlement |
| 604 | * can be handled. |
| 605 | */ |
| 606 | rc = vio_cmo_entitlement_update(*entitlement); |
| 607 | if (rc) |
| 608 | return rc; |
| 609 | } |
| 610 | |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 611 | rc = h_get_mpp(&mpp_data); |
| 612 | if (rc) |
| 613 | return rc; |
| 614 | |
| 615 | if (entitlement) { |
| 616 | new_weight = mpp_data.mem_weight; |
| 617 | new_entitled = *entitlement; |
| 618 | } else if (weight) { |
| 619 | new_weight = *weight; |
| 620 | new_entitled = mpp_data.entitled_mem; |
| 621 | } else |
| 622 | return -EINVAL; |
| 623 | |
| 624 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", |
Harvey Harrison | 5df72bf | 2008-07-31 05:29:03 +1000 | [diff] [blame] | 625 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 626 | |
Ingo Molnar | fe33332 | 2009-01-06 14:26:03 +0000 | [diff] [blame] | 627 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
Harvey Harrison | 5df72bf | 2008-07-31 05:29:03 +1000 | [diff] [blame] | 628 | __func__, new_entitled, new_weight); |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 629 | |
| 630 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); |
| 631 | return rc; |
| 632 | } |
| 633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | /* |
| 635 | * Interface for changing system parameters (variable capacity weight |
| 636 | * and entitled capacity). Format of input is "param_name=value"; |
| 637 | * anything after value is ignored. Valid parameters at this time are |
| 638 | * "partition_entitled_capacity" and "capacity_weight". We use |
| 639 | * H_SET_PPP to alter parameters. |
| 640 | * |
| 641 | * This function should be invoked only on systems with |
| 642 | * FW_FEATURE_SPLPAR. |
| 643 | */ |
| 644 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, |
| 645 | size_t count, loff_t * off) |
| 646 | { |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 647 | int kbuf_sz = 64; |
| 648 | char kbuf[kbuf_sz]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | char *tmp; |
| 650 | u64 new_entitled, *new_entitled_ptr = &new_entitled; |
| 651 | u8 new_weight, *new_weight_ptr = &new_weight; |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 652 | ssize_t retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Stephen Rothwell | 0524aad | 2007-02-05 16:14:05 -0800 | [diff] [blame] | 654 | if (!firmware_has_feature(FW_FEATURE_SPLPAR) || |
| 655 | firmware_has_feature(FW_FEATURE_ISERIES)) |
| 656 | return -EINVAL; |
| 657 | |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 658 | if (count > kbuf_sz) |
| 659 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | if (copy_from_user(kbuf, buf, count)) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 662 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | kbuf[count - 1] = '\0'; |
| 665 | tmp = strchr(kbuf, '='); |
| 666 | if (!tmp) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 667 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | |
| 669 | *tmp++ = '\0'; |
| 670 | |
| 671 | if (!strcmp(kbuf, "partition_entitled_capacity")) { |
| 672 | char *endp; |
| 673 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); |
| 674 | if (endp == tmp) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 675 | return -EINVAL; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 676 | |
| 677 | retval = update_ppp(new_entitled_ptr, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | } else if (!strcmp(kbuf, "capacity_weight")) { |
| 679 | char *endp; |
| 680 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); |
| 681 | if (endp == tmp) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 682 | return -EINVAL; |
Nathan Fotenot | 1152939 | 2008-07-24 04:25:16 +1000 | [diff] [blame] | 683 | |
| 684 | retval = update_ppp(NULL, new_weight_ptr); |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 685 | } else if (!strcmp(kbuf, "entitled_memory")) { |
| 686 | char *endp; |
| 687 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); |
| 688 | if (endp == tmp) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 689 | return -EINVAL; |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 690 | |
| 691 | retval = update_mpp(new_entitled_ptr, NULL); |
| 692 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { |
| 693 | char *endp; |
| 694 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); |
| 695 | if (endp == tmp) |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 696 | return -EINVAL; |
Nathan Fontenot | dfc3403 | 2008-07-24 04:27:30 +1000 | [diff] [blame] | 697 | |
| 698 | retval = update_mpp(NULL, new_weight_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | } else |
Nathan Fontenot | 16c14b4 | 2008-07-24 05:10:46 +1000 | [diff] [blame] | 700 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 702 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | retval = count; |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 704 | } else if (retval == H_BUSY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | retval = -EBUSY; |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 706 | } else if (retval == H_HARDWARE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | retval = -EIO; |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 708 | } else if (retval == H_PARAMETER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | retval = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | } |
| 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | return retval; |
| 713 | } |
| 714 | |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 715 | #else /* CONFIG_PPC_PSERIES */ |
| 716 | |
| 717 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
| 718 | { |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, |
| 723 | size_t count, loff_t * off) |
| 724 | { |
Stephen Rothwell | 0524aad | 2007-02-05 16:14:05 -0800 | [diff] [blame] | 725 | return -EINVAL; |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 726 | } |
| 727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | #endif /* CONFIG_PPC_PSERIES */ |
| 729 | |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 730 | static int lparcfg_data(struct seq_file *m, void *v) |
| 731 | { |
| 732 | struct device_node *rootdn; |
| 733 | const char *model = ""; |
| 734 | const char *system_id = ""; |
| 735 | const char *tmp; |
Jeremy Kerr | a7f67bd | 2006-07-12 15:35:54 +1000 | [diff] [blame] | 736 | const unsigned int *lp_index_ptr; |
| 737 | unsigned int lp_index = 0; |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 738 | |
Frans Pop | 8354be9 | 2010-02-06 07:47:20 +0000 | [diff] [blame] | 739 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 740 | |
Stephen Rothwell | 8c8dc32 | 2007-04-24 13:50:55 +1000 | [diff] [blame] | 741 | rootdn = of_find_node_by_path("/"); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 742 | if (rootdn) { |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 743 | tmp = of_get_property(rootdn, "model", NULL); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 744 | if (tmp) { |
| 745 | model = tmp; |
| 746 | /* Skip "IBM," - see platforms/iseries/dt.c */ |
| 747 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
| 748 | model += 4; |
| 749 | } |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 750 | tmp = of_get_property(rootdn, "system-id", NULL); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 751 | if (tmp) { |
| 752 | system_id = tmp; |
| 753 | /* Skip "IBM," - see platforms/iseries/dt.c */ |
| 754 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
| 755 | system_id += 4; |
| 756 | } |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 757 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
| 758 | NULL); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 759 | if (lp_index_ptr) |
| 760 | lp_index = *lp_index_ptr; |
Stephen Rothwell | 8c8dc32 | 2007-04-24 13:50:55 +1000 | [diff] [blame] | 761 | of_node_put(rootdn); |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 762 | } |
| 763 | seq_printf(m, "serial_number=%s\n", system_id); |
| 764 | seq_printf(m, "system_type=%s\n", model); |
| 765 | seq_printf(m, "partition_id=%d\n", (int)lp_index); |
| 766 | |
| 767 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
| 768 | return iseries_lparcfg_data(m, v); |
| 769 | return pseries_lparcfg_data(m, v); |
| 770 | } |
| 771 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | static int lparcfg_open(struct inode *inode, struct file *file) |
| 773 | { |
| 774 | return single_open(file, lparcfg_data, NULL); |
| 775 | } |
| 776 | |
Michael Ellerman | 1c21a29 | 2008-05-08 14:27:19 +1000 | [diff] [blame] | 777 | static const struct file_operations lparcfg_fops = { |
Anton Blanchard | 8acb888 | 2005-11-11 13:53:11 +1100 | [diff] [blame] | 778 | .owner = THIS_MODULE, |
| 779 | .read = seq_read, |
Stephen Rothwell | 0524aad | 2007-02-05 16:14:05 -0800 | [diff] [blame] | 780 | .write = lparcfg_write, |
Anton Blanchard | 8acb888 | 2005-11-11 13:53:11 +1100 | [diff] [blame] | 781 | .open = lparcfg_open, |
| 782 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | }; |
| 784 | |
Michael Ellerman | 1c21a29 | 2008-05-08 14:27:19 +1000 | [diff] [blame] | 785 | static int __init lparcfg_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | { |
| 787 | struct proc_dir_entry *ent; |
Wim Coekaerts | 7183926 | 2005-09-05 20:22:47 -0700 | [diff] [blame] | 788 | mode_t mode = S_IRUSR | S_IRGRP | S_IROTH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
| 790 | /* Allow writing if we have FW_FEATURE_SPLPAR */ |
Stephen Rothwell | 16e9f99 | 2006-06-29 15:07:42 +1000 | [diff] [blame] | 791 | if (firmware_has_feature(FW_FEATURE_SPLPAR) && |
Stephen Rothwell | 0524aad | 2007-02-05 16:14:05 -0800 | [diff] [blame] | 792 | !firmware_has_feature(FW_FEATURE_ISERIES)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | mode |= S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | |
Benjamin Herrenschmidt | 188917e | 2009-09-24 19:29:13 +0000 | [diff] [blame] | 795 | ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops); |
Denis V. Lunev | 6674713 | 2008-04-29 01:02:26 -0700 | [diff] [blame] | 796 | if (!ent) { |
Benjamin Herrenschmidt | 188917e | 2009-09-24 19:29:13 +0000 | [diff] [blame] | 797 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | return -EIO; |
| 799 | } |
| 800 | |
| 801 | proc_ppc64_lparcfg = ent; |
| 802 | return 0; |
| 803 | } |
| 804 | |
Michael Ellerman | 1c21a29 | 2008-05-08 14:27:19 +1000 | [diff] [blame] | 805 | static void __exit lparcfg_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | { |
Nathan Lynch | 0d9dc4b | 2007-12-05 03:03:49 +1100 | [diff] [blame] | 807 | if (proc_ppc64_lparcfg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | module_init(lparcfg_init); |
| 812 | module_exit(lparcfg_cleanup); |
| 813 | MODULE_DESCRIPTION("Interface for LPAR configuration data"); |
| 814 | MODULE_AUTHOR("Dave Engebretsen"); |
| 815 | MODULE_LICENSE("GPL"); |