Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
5a0e3ad6 | 27 | #include <linux/slab.h> |
1da177e4 | 28 | #include <asm/uaccess.h> |
15b17189 | 29 | #include <asm/iseries/hv_lp_config.h> |
1da177e4 | 30 | #include <asm/lppaca.h> |
1da177e4 | 31 | #include <asm/hvcall.h> |
1ababe11 | 32 | #include <asm/firmware.h> |
1da177e4 LT |
33 | #include <asm/rtas.h> |
34 | #include <asm/system.h> | |
35 | #include <asm/time.h> | |
856509d5 | 36 | #include <asm/prom.h> |
271c3f35 | 37 | #include <asm/vdso_datapage.h> |
22e1a4dd | 38 | #include <asm/vio.h> |
46db2f86 | 39 | #include <asm/mmu.h> |
1da177e4 | 40 | |
6fe9d1fa | 41 | #define MODULE_VERS "1.9" |
1da177e4 LT |
42 | #define MODULE_NAME "lparcfg" |
43 | ||
44 | /* #define LPARCFG_DEBUG */ | |
45 | ||
1da177e4 | 46 | static struct proc_dir_entry *proc_ppc64_lparcfg; |
1da177e4 | 47 | |
1da177e4 | 48 | /* |
16e9f994 SR |
49 | * Track sum of all purrs across all processors. This is used to further |
50 | * calculate usage values by different applications | |
1da177e4 LT |
51 | */ |
52 | static unsigned long get_purr(void) | |
53 | { | |
54 | unsigned long sum_purr = 0; | |
55 | int cpu; | |
1da177e4 | 56 | |
0e551954 | 57 | for_each_possible_cpu(cpu) { |
16e9f994 | 58 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
8154c5d2 | 59 | sum_purr += lppaca_of(cpu).emulated_time_base; |
16e9f994 SR |
60 | else { |
61 | struct cpu_usage *cu; | |
1da177e4 | 62 | |
16e9f994 SR |
63 | cu = &per_cpu(cpu_usage_array, cpu); |
64 | sum_purr += cu->current_tb; | |
65 | } | |
1da177e4 LT |
66 | } |
67 | return sum_purr; | |
68 | } | |
69 | ||
16e9f994 | 70 | #ifdef CONFIG_PPC_ISERIES |
1da177e4 | 71 | |
d3d2176a | 72 | /* |
1da177e4 LT |
73 | * Methods used to fetch LPAR data when running on an iSeries platform. |
74 | */ | |
16e9f994 | 75 | static int iseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 | 76 | { |
16e9f994 | 77 | unsigned long pool_id; |
1da177e4 LT |
78 | int shared, entitled_capacity, max_entitled_capacity; |
79 | int processors, max_processors; | |
1da177e4 LT |
80 | unsigned long purr = get_purr(); |
81 | ||
048c8bc9 | 82 | shared = (int)(local_paca->lppaca_ptr->shared_proc); |
1da177e4 LT |
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 | } | |
16e9f994 SR |
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 | ||
1da177e4 LT |
129 | #endif /* CONFIG_PPC_ISERIES */ |
130 | ||
131 | #ifdef CONFIG_PPC_PSERIES | |
d3d2176a | 132 | /* |
1da177e4 LT |
133 | * Methods used to fetch LPAR data when running on a pSeries platform. |
134 | */ | |
dfc3403f NF |
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 | ||
398778f7 RJ |
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; | |
f03cdb3a NF |
174 | u16 phys_platform_procs; |
175 | u32 max_proc_cap_avail; | |
176 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
177 | }; |
178 | ||
1da177e4 LT |
179 | /* |
180 | * H_GET_PPP hcall returns info in 4 parms. | |
181 | * entitled_capacity,unallocated_capacity, | |
182 | * aggregation, resource_capability). | |
183 | * | |
d3d2176a | 184 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
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. | |
d3d2176a | 197 | * XXXX - Processors active on platform. |
f03cdb3a NF |
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. | |
1da177e4 | 203 | */ |
398778f7 | 204 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 LT |
205 | { |
206 | unsigned long rc; | |
f03cdb3a | 207 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
b9377ffc | 208 | |
f03cdb3a | 209 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 210 | |
398778f7 RJ |
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; | |
1da177e4 | 222 | |
f03cdb3a NF |
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 | ||
1da177e4 LT |
227 | return rc; |
228 | } | |
229 | ||
11529396 NF |
230 | static unsigned h_pic(unsigned long *pool_idle_time, |
231 | unsigned long *num_procs) | |
1da177e4 LT |
232 | { |
233 | unsigned long rc; | |
b9377ffc AB |
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]; | |
11529396 NF |
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 | { | |
398778f7 | 250 | struct hvcall_ppp_data ppp_data; |
f03cdb3a NF |
251 | struct device_node *root; |
252 | const int *perf_level; | |
11529396 NF |
253 | int rc; |
254 | ||
398778f7 | 255 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
256 | if (rc) |
257 | return; | |
258 | ||
fe333321 | 259 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
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); | |
11529396 NF |
264 | |
265 | /* pool related entries are apropriate for shared configs */ | |
8154c5d2 | 266 | if (lppaca_of(0).shared_proc) { |
11529396 NF |
267 | unsigned long pool_idle_time, pool_procs; |
268 | ||
398778f7 | 269 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
270 | |
271 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
272 | seq_printf(m, "pool_capacity=%d\n", |
273 | ppp_data.active_procs_in_pool * 100); | |
11529396 NF |
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 | ||
398778f7 RJ |
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); | |
fe333321 | 284 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 285 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
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 | } | |
1da177e4 LT |
308 | } |
309 | ||
dfc3403f NF |
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 | ||
1da177e4 LT |
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 | ||
34422fed | 361 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 362 | if (!local_buffer) { |
8354be9c | 363 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 364 | __FILE__, __func__, __LINE__); |
1da177e4 LT |
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, | |
34422fed WS |
373 | __pa(rtas_data_buf), |
374 | RTAS_DATA_BUF_SIZE); | |
1da177e4 LT |
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", | |
e48b1b45 | 381 | __FILE__, __func__, call_status); |
1da177e4 LT |
382 | } else { |
383 | int splpar_strlen; | |
384 | int idx, w_idx; | |
dd00cc48 | 385 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 386 | if (!workbuffer) { |
8354be9c | 387 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 388 | __FILE__, __func__, __LINE__); |
d3d2176a | 389 | kfree(local_buffer); |
1da177e4 LT |
390 | return; |
391 | } | |
392 | #ifdef LPARCFG_DEBUG | |
8354be9c | 393 | printk(KERN_INFO "success calling get-system-parameter\n"); |
1da177e4 | 394 | #endif |
34422fed | 395 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
1da177e4 LT |
396 | local_buffer += 2; /* step over strlen value */ |
397 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | |
8354be9c | 444 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
1da177e4 LT |
445 | #endif |
446 | count++; | |
447 | } | |
448 | return count; | |
449 | } | |
450 | ||
ffa5abbd BK |
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 | ||
ac22429d RJ |
457 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
458 | ||
ffa5abbd BK |
459 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
460 | return; | |
461 | ||
462 | for_each_possible_cpu(cpu) { | |
8154c5d2 PM |
463 | cmo_faults += lppaca_of(cpu).cmo_faults; |
464 | cmo_fault_time += lppaca_of(cpu).cmo_fault_time; | |
ffa5abbd BK |
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); | |
ac22429d RJ |
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()); | |
ffa5abbd BK |
473 | } |
474 | ||
0559f0a7 AB |
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) { | |
8154c5d2 PM |
482 | dispatches += lppaca_of(cpu).yield_count; |
483 | dispatch_dispersions += lppaca_of(cpu).dispersion_count; | |
0559f0a7 AB |
484 | } |
485 | ||
486 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
487 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
488 | } | |
489 | ||
6fe9d1fa VS |
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 | ||
16e9f994 | 498 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
499 | { |
500 | int partition_potential_processors; | |
501 | int partition_active_processors; | |
1da177e4 | 502 | struct device_node *rtas_node; |
a7f67bdf | 503 | const int *lrdrp = NULL; |
1da177e4 | 504 | |
8c8dc322 | 505 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 506 | if (rtas_node) |
e2eb6392 | 507 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
508 | |
509 | if (lrdrp == NULL) { | |
271c3f35 | 510 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 LT |
511 | } else { |
512 | partition_potential_processors = *(lrdrp + 4); | |
513 | } | |
8c8dc322 | 514 | of_node_put(rtas_node); |
1da177e4 LT |
515 | |
516 | partition_active_processors = lparcfg_count_active_processors(); | |
517 | ||
1ababe11 | 518 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 LT |
519 | /* this call handles the ibm,get-system-parameter contents */ |
520 | parse_system_parameter_string(m); | |
11529396 | 521 | parse_ppp_data(m); |
dfc3403f | 522 | parse_mpp_data(m); |
ffa5abbd | 523 | pseries_cmo_data(m); |
0559f0a7 | 524 | splpar_dispatch_data(m); |
1da177e4 | 525 | |
11529396 | 526 | seq_printf(m, "purr=%ld\n", get_purr()); |
1da177e4 LT |
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 | ||
8154c5d2 | 548 | seq_printf(m, "shared_processor_mode=%d\n", lppaca_of(0).shared_proc); |
1da177e4 | 549 | |
46db2f86 BK |
550 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
551 | ||
6fe9d1fa VS |
552 | parse_em_data(m); |
553 | ||
1da177e4 LT |
554 | return 0; |
555 | } | |
556 | ||
11529396 NF |
557 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
558 | { | |
398778f7 RJ |
559 | struct hvcall_ppp_data ppp_data; |
560 | u8 new_weight; | |
11529396 NF |
561 | u64 new_entitled; |
562 | ssize_t retval; | |
563 | ||
564 | /* Get our current parameters */ | |
398778f7 | 565 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
566 | if (retval) |
567 | return retval; | |
568 | ||
11529396 | 569 | if (entitlement) { |
398778f7 | 570 | new_weight = ppp_data.weight; |
11529396 NF |
571 | new_entitled = *entitlement; |
572 | } else if (weight) { | |
573 | new_weight = *weight; | |
398778f7 | 574 | new_entitled = ppp_data.entitlement; |
11529396 NF |
575 | } else |
576 | return -EINVAL; | |
577 | ||
fe333321 | 578 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 579 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 580 | |
fe333321 | 581 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 582 | __func__, new_entitled, new_weight); |
11529396 NF |
583 | |
584 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
585 | return retval; | |
586 | } | |
587 | ||
dfc3403f NF |
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 | ||
22e1a4dd NF |
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 | ||
dfc3403f NF |
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", | |
5df72bf3 | 625 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 626 | |
fe333321 | 627 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 628 | __func__, new_entitled, new_weight); |
dfc3403f NF |
629 | |
630 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
631 | return rc; | |
632 | } | |
633 | ||
1da177e4 LT |
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 | { | |
16c14b46 NF |
647 | int kbuf_sz = 64; |
648 | char kbuf[kbuf_sz]; | |
1da177e4 LT |
649 | char *tmp; |
650 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
651 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 652 | ssize_t retval; |
1da177e4 | 653 | |
0524aad7 SR |
654 | if (!firmware_has_feature(FW_FEATURE_SPLPAR) || |
655 | firmware_has_feature(FW_FEATURE_ISERIES)) | |
656 | return -EINVAL; | |
657 | ||
16c14b46 NF |
658 | if (count > kbuf_sz) |
659 | return -EINVAL; | |
1da177e4 | 660 | |
1da177e4 | 661 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 662 | return -EFAULT; |
1da177e4 | 663 | |
1da177e4 LT |
664 | kbuf[count - 1] = '\0'; |
665 | tmp = strchr(kbuf, '='); | |
666 | if (!tmp) | |
16c14b46 | 667 | return -EINVAL; |
1da177e4 LT |
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) | |
16c14b46 | 675 | return -EINVAL; |
11529396 NF |
676 | |
677 | retval = update_ppp(new_entitled_ptr, NULL); | |
1da177e4 LT |
678 | } else if (!strcmp(kbuf, "capacity_weight")) { |
679 | char *endp; | |
680 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
681 | if (endp == tmp) | |
16c14b46 | 682 | return -EINVAL; |
1da177e4 | 683 | |
11529396 | 684 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
685 | } else if (!strcmp(kbuf, "entitled_memory")) { |
686 | char *endp; | |
687 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
688 | if (endp == tmp) | |
16c14b46 | 689 | return -EINVAL; |
dfc3403f NF |
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) | |
16c14b46 | 696 | return -EINVAL; |
dfc3403f NF |
697 | |
698 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 699 | } else |
16c14b46 | 700 | return -EINVAL; |
1da177e4 | 701 | |
706c8c93 | 702 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 703 | retval = count; |
706c8c93 | 704 | } else if (retval == H_BUSY) { |
1da177e4 | 705 | retval = -EBUSY; |
706c8c93 | 706 | } else if (retval == H_HARDWARE) { |
1da177e4 | 707 | retval = -EIO; |
706c8c93 | 708 | } else if (retval == H_PARAMETER) { |
1da177e4 | 709 | retval = -EINVAL; |
1da177e4 LT |
710 | } |
711 | ||
1da177e4 LT |
712 | return retval; |
713 | } | |
714 | ||
16e9f994 SR |
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 | { | |
0524aad7 | 725 | return -EINVAL; |
16e9f994 SR |
726 | } |
727 | ||
1da177e4 LT |
728 | #endif /* CONFIG_PPC_PSERIES */ |
729 | ||
16e9f994 SR |
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; | |
a7f67bdf JK |
736 | const unsigned int *lp_index_ptr; |
737 | unsigned int lp_index = 0; | |
16e9f994 | 738 | |
8354be9c | 739 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
16e9f994 | 740 | |
8c8dc322 | 741 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 742 | if (rootdn) { |
e2eb6392 | 743 | tmp = of_get_property(rootdn, "model", NULL); |
16e9f994 SR |
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 | } | |
e2eb6392 | 750 | tmp = of_get_property(rootdn, "system-id", NULL); |
16e9f994 SR |
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 | } | |
e2eb6392 SR |
757 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
758 | NULL); | |
16e9f994 SR |
759 | if (lp_index_ptr) |
760 | lp_index = *lp_index_ptr; | |
8c8dc322 | 761 | of_node_put(rootdn); |
16e9f994 SR |
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 | ||
1da177e4 LT |
772 | static int lparcfg_open(struct inode *inode, struct file *file) |
773 | { | |
774 | return single_open(file, lparcfg_data, NULL); | |
775 | } | |
776 | ||
1c21a293 | 777 | static const struct file_operations lparcfg_fops = { |
8acb888c AB |
778 | .owner = THIS_MODULE, |
779 | .read = seq_read, | |
0524aad7 | 780 | .write = lparcfg_write, |
8acb888c AB |
781 | .open = lparcfg_open, |
782 | .release = single_release, | |
6038f373 | 783 | .llseek = seq_lseek, |
1da177e4 LT |
784 | }; |
785 | ||
1c21a293 | 786 | static int __init lparcfg_init(void) |
1da177e4 LT |
787 | { |
788 | struct proc_dir_entry *ent; | |
71839267 | 789 | mode_t mode = S_IRUSR | S_IRGRP | S_IROTH; |
1da177e4 LT |
790 | |
791 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
16e9f994 | 792 | if (firmware_has_feature(FW_FEATURE_SPLPAR) && |
0524aad7 | 793 | !firmware_has_feature(FW_FEATURE_ISERIES)) |
1da177e4 | 794 | mode |= S_IWUSR; |
1da177e4 | 795 | |
188917e1 | 796 | ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops); |
66747138 | 797 | if (!ent) { |
188917e1 | 798 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
1da177e4 LT |
799 | return -EIO; |
800 | } | |
801 | ||
802 | proc_ppc64_lparcfg = ent; | |
803 | return 0; | |
804 | } | |
805 | ||
1c21a293 | 806 | static void __exit lparcfg_cleanup(void) |
1da177e4 | 807 | { |
0d9dc4b4 | 808 | if (proc_ppc64_lparcfg) |
1da177e4 | 809 | remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); |
1da177e4 LT |
810 | } |
811 | ||
812 | module_init(lparcfg_init); | |
813 | module_exit(lparcfg_cleanup); | |
814 | MODULE_DESCRIPTION("Interface for LPAR configuration data"); | |
815 | MODULE_AUTHOR("Dave Engebretsen"); | |
816 | MODULE_LICENSE("GPL"); |