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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 | 135 | |
398778f7 RJ |
136 | struct hvcall_ppp_data { |
137 | u64 entitlement; | |
138 | u64 unallocated_entitlement; | |
139 | u16 group_num; | |
140 | u16 pool_num; | |
141 | u8 capped; | |
142 | u8 weight; | |
143 | u8 unallocated_weight; | |
144 | u16 active_procs_in_pool; | |
145 | u16 active_system_procs; | |
f03cdb3a NF |
146 | u16 phys_platform_procs; |
147 | u32 max_proc_cap_avail; | |
148 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
149 | }; |
150 | ||
1da177e4 LT |
151 | /* |
152 | * H_GET_PPP hcall returns info in 4 parms. | |
153 | * entitled_capacity,unallocated_capacity, | |
154 | * aggregation, resource_capability). | |
155 | * | |
d3d2176a | 156 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
157 | * R5 = Unallocated Processor Capacity Percentage. |
158 | * R6 (AABBCCDDEEFFGGHH). | |
159 | * XXXX - reserved (0) | |
160 | * XXXX - reserved (0) | |
161 | * XXXX - Group Number | |
162 | * XXXX - Pool Number. | |
163 | * R7 (IIJJKKLLMMNNOOPP). | |
164 | * XX - reserved. (0) | |
165 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. | |
166 | * XX - variable processor Capacity Weight | |
167 | * XX - Unallocated Variable Processor Capacity Weight. | |
168 | * XXXX - Active processors in Physical Processor Pool. | |
d3d2176a | 169 | * XXXX - Processors active on platform. |
f03cdb3a NF |
170 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
171 | * XXXX - Physical platform procs allocated to virtualization. | |
172 | * XXXXXX - Max procs capacity % available to the partitions pool. | |
173 | * XXXXXX - Entitled procs capacity % available to the | |
174 | * partitions pool. | |
1da177e4 | 175 | */ |
398778f7 | 176 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 LT |
177 | { |
178 | unsigned long rc; | |
f03cdb3a | 179 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
b9377ffc | 180 | |
f03cdb3a | 181 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 182 | |
398778f7 RJ |
183 | ppp_data->entitlement = retbuf[0]; |
184 | ppp_data->unallocated_entitlement = retbuf[1]; | |
185 | ||
186 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
187 | ppp_data->pool_num = retbuf[2] & 0xffff; | |
188 | ||
189 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; | |
190 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; | |
191 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; | |
192 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; | |
193 | ppp_data->active_system_procs = retbuf[3] & 0xffff; | |
1da177e4 | 194 | |
f03cdb3a NF |
195 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
196 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; | |
197 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; | |
198 | ||
1da177e4 LT |
199 | return rc; |
200 | } | |
201 | ||
11529396 NF |
202 | static unsigned h_pic(unsigned long *pool_idle_time, |
203 | unsigned long *num_procs) | |
1da177e4 LT |
204 | { |
205 | unsigned long rc; | |
b9377ffc AB |
206 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
207 | ||
208 | rc = plpar_hcall(H_PIC, retbuf); | |
209 | ||
210 | *pool_idle_time = retbuf[0]; | |
211 | *num_procs = retbuf[1]; | |
11529396 NF |
212 | |
213 | return rc; | |
214 | } | |
215 | ||
216 | /* | |
217 | * parse_ppp_data | |
218 | * Parse out the data returned from h_get_ppp and h_pic | |
219 | */ | |
220 | static void parse_ppp_data(struct seq_file *m) | |
221 | { | |
398778f7 | 222 | struct hvcall_ppp_data ppp_data; |
f03cdb3a NF |
223 | struct device_node *root; |
224 | const int *perf_level; | |
11529396 NF |
225 | int rc; |
226 | ||
398778f7 | 227 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
228 | if (rc) |
229 | return; | |
230 | ||
fe333321 | 231 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
232 | ppp_data.entitlement); |
233 | seq_printf(m, "group=%d\n", ppp_data.group_num); | |
234 | seq_printf(m, "system_active_processors=%d\n", | |
235 | ppp_data.active_system_procs); | |
11529396 | 236 | |
25985edc | 237 | /* pool related entries are appropriate for shared configs */ |
8154c5d2 | 238 | if (lppaca_of(0).shared_proc) { |
11529396 NF |
239 | unsigned long pool_idle_time, pool_procs; |
240 | ||
398778f7 | 241 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
242 | |
243 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
244 | seq_printf(m, "pool_capacity=%d\n", |
245 | ppp_data.active_procs_in_pool * 100); | |
11529396 NF |
246 | |
247 | h_pic(&pool_idle_time, &pool_procs); | |
248 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); | |
249 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); | |
250 | } | |
251 | ||
398778f7 RJ |
252 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
253 | ppp_data.unallocated_weight); | |
254 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); | |
255 | seq_printf(m, "capped=%d\n", ppp_data.capped); | |
fe333321 | 256 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 257 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
258 | |
259 | /* The last bits of information returned from h_get_ppp are only | |
260 | * valid if the ibm,partition-performance-parameters-level | |
261 | * property is >= 1. | |
262 | */ | |
263 | root = of_find_node_by_path("/"); | |
264 | if (root) { | |
265 | perf_level = of_get_property(root, | |
266 | "ibm,partition-performance-parameters-level", | |
267 | NULL); | |
268 | if (perf_level && (*perf_level >= 1)) { | |
269 | seq_printf(m, | |
270 | "physical_procs_allocated_to_virtualization=%d\n", | |
271 | ppp_data.phys_platform_procs); | |
272 | seq_printf(m, "max_proc_capacity_available=%d\n", | |
273 | ppp_data.max_proc_cap_avail); | |
274 | seq_printf(m, "entitled_proc_capacity_available=%d\n", | |
275 | ppp_data.entitled_proc_cap_avail); | |
276 | } | |
277 | ||
278 | of_node_put(root); | |
279 | } | |
1da177e4 LT |
280 | } |
281 | ||
dfc3403f NF |
282 | /** |
283 | * parse_mpp_data | |
284 | * Parse out data returned from h_get_mpp | |
285 | */ | |
286 | static void parse_mpp_data(struct seq_file *m) | |
287 | { | |
288 | struct hvcall_mpp_data mpp_data; | |
289 | int rc; | |
290 | ||
291 | rc = h_get_mpp(&mpp_data); | |
292 | if (rc) | |
293 | return; | |
294 | ||
295 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); | |
296 | ||
297 | if (mpp_data.mapped_mem != -1) | |
298 | seq_printf(m, "mapped_entitled_memory=%ld\n", | |
299 | mpp_data.mapped_mem); | |
300 | ||
301 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); | |
302 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); | |
303 | ||
304 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); | |
305 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", | |
306 | mpp_data.unallocated_mem_weight); | |
307 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", | |
308 | mpp_data.unallocated_entitlement); | |
309 | ||
310 | if (mpp_data.pool_size != -1) | |
311 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", | |
312 | mpp_data.pool_size); | |
313 | ||
314 | seq_printf(m, "entitled_memory_loan_request=%ld\n", | |
315 | mpp_data.loan_request); | |
316 | ||
317 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); | |
318 | } | |
319 | ||
9ee820fa BK |
320 | /** |
321 | * parse_mpp_x_data | |
322 | * Parse out data returned from h_get_mpp_x | |
323 | */ | |
324 | static void parse_mpp_x_data(struct seq_file *m) | |
325 | { | |
326 | struct hvcall_mpp_x_data mpp_x_data; | |
327 | ||
328 | if (!firmware_has_feature(FW_FEATURE_XCMO)) | |
329 | return; | |
330 | if (h_get_mpp_x(&mpp_x_data)) | |
331 | return; | |
332 | ||
333 | seq_printf(m, "coalesced_bytes=%ld\n", mpp_x_data.coalesced_bytes); | |
334 | ||
335 | if (mpp_x_data.pool_coalesced_bytes) | |
336 | seq_printf(m, "pool_coalesced_bytes=%ld\n", | |
337 | mpp_x_data.pool_coalesced_bytes); | |
338 | if (mpp_x_data.pool_purr_cycles) | |
339 | seq_printf(m, "coalesce_pool_purr=%ld\n", mpp_x_data.pool_purr_cycles); | |
340 | if (mpp_x_data.pool_spurr_cycles) | |
341 | seq_printf(m, "coalesce_pool_spurr=%ld\n", mpp_x_data.pool_spurr_cycles); | |
342 | } | |
343 | ||
1da177e4 LT |
344 | #define SPLPAR_CHARACTERISTICS_TOKEN 20 |
345 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) | |
346 | ||
347 | /* | |
348 | * parse_system_parameter_string() | |
349 | * Retrieve the potential_processors, max_entitled_capacity and friends | |
350 | * through the get-system-parameter rtas call. Replace keyword strings as | |
351 | * necessary. | |
352 | */ | |
353 | static void parse_system_parameter_string(struct seq_file *m) | |
354 | { | |
355 | int call_status; | |
356 | ||
34422fed | 357 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 358 | if (!local_buffer) { |
8354be9c | 359 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 360 | __FILE__, __func__, __LINE__); |
1da177e4 LT |
361 | return; |
362 | } | |
363 | ||
364 | spin_lock(&rtas_data_buf_lock); | |
365 | memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); | |
366 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, | |
367 | NULL, | |
368 | SPLPAR_CHARACTERISTICS_TOKEN, | |
34422fed WS |
369 | __pa(rtas_data_buf), |
370 | RTAS_DATA_BUF_SIZE); | |
1da177e4 LT |
371 | memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); |
372 | spin_unlock(&rtas_data_buf_lock); | |
373 | ||
374 | if (call_status != 0) { | |
375 | printk(KERN_INFO | |
376 | "%s %s Error calling get-system-parameter (0x%x)\n", | |
e48b1b45 | 377 | __FILE__, __func__, call_status); |
1da177e4 LT |
378 | } else { |
379 | int splpar_strlen; | |
380 | int idx, w_idx; | |
dd00cc48 | 381 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 382 | if (!workbuffer) { |
8354be9c | 383 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 384 | __FILE__, __func__, __LINE__); |
d3d2176a | 385 | kfree(local_buffer); |
1da177e4 LT |
386 | return; |
387 | } | |
388 | #ifdef LPARCFG_DEBUG | |
8354be9c | 389 | printk(KERN_INFO "success calling get-system-parameter\n"); |
1da177e4 | 390 | #endif |
34422fed | 391 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
1da177e4 LT |
392 | local_buffer += 2; /* step over strlen value */ |
393 | ||
1da177e4 LT |
394 | w_idx = 0; |
395 | idx = 0; | |
396 | while ((*local_buffer) && (idx < splpar_strlen)) { | |
397 | workbuffer[w_idx++] = local_buffer[idx++]; | |
398 | if ((local_buffer[idx] == ',') | |
399 | || (local_buffer[idx] == '\0')) { | |
400 | workbuffer[w_idx] = '\0'; | |
401 | if (w_idx) { | |
402 | /* avoid the empty string */ | |
403 | seq_printf(m, "%s\n", workbuffer); | |
404 | } | |
405 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); | |
406 | idx++; /* skip the comma */ | |
407 | w_idx = 0; | |
408 | } else if (local_buffer[idx] == '=') { | |
409 | /* code here to replace workbuffer contents | |
410 | with different keyword strings */ | |
411 | if (0 == strcmp(workbuffer, "MaxEntCap")) { | |
412 | strcpy(workbuffer, | |
413 | "partition_max_entitled_capacity"); | |
414 | w_idx = strlen(workbuffer); | |
415 | } | |
416 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { | |
417 | strcpy(workbuffer, | |
418 | "system_potential_processors"); | |
419 | w_idx = strlen(workbuffer); | |
420 | } | |
421 | } | |
422 | } | |
423 | kfree(workbuffer); | |
424 | local_buffer -= 2; /* back up over strlen value */ | |
425 | } | |
426 | kfree(local_buffer); | |
427 | } | |
428 | ||
1da177e4 LT |
429 | /* Return the number of processors in the system. |
430 | * This function reads through the device tree and counts | |
431 | * the virtual processors, this does not include threads. | |
432 | */ | |
433 | static int lparcfg_count_active_processors(void) | |
434 | { | |
435 | struct device_node *cpus_dn = NULL; | |
436 | int count = 0; | |
437 | ||
438 | while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) { | |
439 | #ifdef LPARCFG_DEBUG | |
8354be9c | 440 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
1da177e4 LT |
441 | #endif |
442 | count++; | |
443 | } | |
444 | return count; | |
445 | } | |
446 | ||
ffa5abbd BK |
447 | static void pseries_cmo_data(struct seq_file *m) |
448 | { | |
449 | int cpu; | |
450 | unsigned long cmo_faults = 0; | |
451 | unsigned long cmo_fault_time = 0; | |
452 | ||
ac22429d RJ |
453 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
454 | ||
ffa5abbd BK |
455 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
456 | return; | |
457 | ||
458 | for_each_possible_cpu(cpu) { | |
8154c5d2 PM |
459 | cmo_faults += lppaca_of(cpu).cmo_faults; |
460 | cmo_fault_time += lppaca_of(cpu).cmo_fault_time; | |
ffa5abbd BK |
461 | } |
462 | ||
463 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); | |
464 | seq_printf(m, "cmo_fault_time_usec=%lu\n", | |
465 | cmo_fault_time / tb_ticks_per_usec); | |
ac22429d RJ |
466 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
467 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); | |
468 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); | |
ffa5abbd BK |
469 | } |
470 | ||
0559f0a7 AB |
471 | static void splpar_dispatch_data(struct seq_file *m) |
472 | { | |
473 | int cpu; | |
474 | unsigned long dispatches = 0; | |
475 | unsigned long dispatch_dispersions = 0; | |
476 | ||
477 | for_each_possible_cpu(cpu) { | |
8154c5d2 PM |
478 | dispatches += lppaca_of(cpu).yield_count; |
479 | dispatch_dispersions += lppaca_of(cpu).dispersion_count; | |
0559f0a7 AB |
480 | } |
481 | ||
482 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
483 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
484 | } | |
485 | ||
6fe9d1fa VS |
486 | static void parse_em_data(struct seq_file *m) |
487 | { | |
488 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
489 | ||
490 | if (plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS) | |
491 | seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]); | |
492 | } | |
493 | ||
16e9f994 | 494 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
495 | { |
496 | int partition_potential_processors; | |
497 | int partition_active_processors; | |
1da177e4 | 498 | struct device_node *rtas_node; |
a7f67bdf | 499 | const int *lrdrp = NULL; |
1da177e4 | 500 | |
8c8dc322 | 501 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 502 | if (rtas_node) |
e2eb6392 | 503 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
504 | |
505 | if (lrdrp == NULL) { | |
271c3f35 | 506 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 LT |
507 | } else { |
508 | partition_potential_processors = *(lrdrp + 4); | |
509 | } | |
8c8dc322 | 510 | of_node_put(rtas_node); |
1da177e4 LT |
511 | |
512 | partition_active_processors = lparcfg_count_active_processors(); | |
513 | ||
1ababe11 | 514 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 LT |
515 | /* this call handles the ibm,get-system-parameter contents */ |
516 | parse_system_parameter_string(m); | |
11529396 | 517 | parse_ppp_data(m); |
dfc3403f | 518 | parse_mpp_data(m); |
9ee820fa | 519 | parse_mpp_x_data(m); |
ffa5abbd | 520 | pseries_cmo_data(m); |
0559f0a7 | 521 | splpar_dispatch_data(m); |
1da177e4 | 522 | |
11529396 | 523 | seq_printf(m, "purr=%ld\n", get_purr()); |
1da177e4 LT |
524 | } else { /* non SPLPAR case */ |
525 | ||
526 | seq_printf(m, "system_active_processors=%d\n", | |
527 | partition_potential_processors); | |
528 | ||
529 | seq_printf(m, "system_potential_processors=%d\n", | |
530 | partition_potential_processors); | |
531 | ||
532 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
533 | partition_potential_processors * 100); | |
534 | ||
535 | seq_printf(m, "partition_entitled_capacity=%d\n", | |
536 | partition_active_processors * 100); | |
537 | } | |
538 | ||
539 | seq_printf(m, "partition_active_processors=%d\n", | |
540 | partition_active_processors); | |
541 | ||
542 | seq_printf(m, "partition_potential_processors=%d\n", | |
543 | partition_potential_processors); | |
544 | ||
8154c5d2 | 545 | seq_printf(m, "shared_processor_mode=%d\n", lppaca_of(0).shared_proc); |
1da177e4 | 546 | |
46db2f86 BK |
547 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
548 | ||
6fe9d1fa VS |
549 | parse_em_data(m); |
550 | ||
1da177e4 LT |
551 | return 0; |
552 | } | |
553 | ||
11529396 NF |
554 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
555 | { | |
398778f7 RJ |
556 | struct hvcall_ppp_data ppp_data; |
557 | u8 new_weight; | |
11529396 NF |
558 | u64 new_entitled; |
559 | ssize_t retval; | |
560 | ||
561 | /* Get our current parameters */ | |
398778f7 | 562 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
563 | if (retval) |
564 | return retval; | |
565 | ||
11529396 | 566 | if (entitlement) { |
398778f7 | 567 | new_weight = ppp_data.weight; |
11529396 NF |
568 | new_entitled = *entitlement; |
569 | } else if (weight) { | |
570 | new_weight = *weight; | |
398778f7 | 571 | new_entitled = ppp_data.entitlement; |
11529396 NF |
572 | } else |
573 | return -EINVAL; | |
574 | ||
fe333321 | 575 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 576 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 577 | |
fe333321 | 578 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 579 | __func__, new_entitled, new_weight); |
11529396 NF |
580 | |
581 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
582 | return retval; | |
583 | } | |
584 | ||
dfc3403f NF |
585 | /** |
586 | * update_mpp | |
587 | * | |
588 | * Update the memory entitlement and weight for the partition. Caller must | |
589 | * specify either a new entitlement or weight, not both, to be updated | |
590 | * since the h_set_mpp call takes both entitlement and weight as parameters. | |
591 | */ | |
592 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) | |
593 | { | |
594 | struct hvcall_mpp_data mpp_data; | |
595 | u64 new_entitled; | |
596 | u8 new_weight; | |
597 | ssize_t rc; | |
598 | ||
22e1a4dd NF |
599 | if (entitlement) { |
600 | /* Check with vio to ensure the new memory entitlement | |
601 | * can be handled. | |
602 | */ | |
603 | rc = vio_cmo_entitlement_update(*entitlement); | |
604 | if (rc) | |
605 | return rc; | |
606 | } | |
607 | ||
dfc3403f NF |
608 | rc = h_get_mpp(&mpp_data); |
609 | if (rc) | |
610 | return rc; | |
611 | ||
612 | if (entitlement) { | |
613 | new_weight = mpp_data.mem_weight; | |
614 | new_entitled = *entitlement; | |
615 | } else if (weight) { | |
616 | new_weight = *weight; | |
617 | new_entitled = mpp_data.entitled_mem; | |
618 | } else | |
619 | return -EINVAL; | |
620 | ||
621 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", | |
5df72bf3 | 622 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 623 | |
fe333321 | 624 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 625 | __func__, new_entitled, new_weight); |
dfc3403f NF |
626 | |
627 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
628 | return rc; | |
629 | } | |
630 | ||
1da177e4 LT |
631 | /* |
632 | * Interface for changing system parameters (variable capacity weight | |
633 | * and entitled capacity). Format of input is "param_name=value"; | |
634 | * anything after value is ignored. Valid parameters at this time are | |
635 | * "partition_entitled_capacity" and "capacity_weight". We use | |
636 | * H_SET_PPP to alter parameters. | |
637 | * | |
638 | * This function should be invoked only on systems with | |
639 | * FW_FEATURE_SPLPAR. | |
640 | */ | |
641 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
642 | size_t count, loff_t * off) | |
643 | { | |
16c14b46 NF |
644 | int kbuf_sz = 64; |
645 | char kbuf[kbuf_sz]; | |
1da177e4 LT |
646 | char *tmp; |
647 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
648 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 649 | ssize_t retval; |
1da177e4 | 650 | |
0524aad7 SR |
651 | if (!firmware_has_feature(FW_FEATURE_SPLPAR) || |
652 | firmware_has_feature(FW_FEATURE_ISERIES)) | |
653 | return -EINVAL; | |
654 | ||
16c14b46 NF |
655 | if (count > kbuf_sz) |
656 | return -EINVAL; | |
1da177e4 | 657 | |
1da177e4 | 658 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 659 | return -EFAULT; |
1da177e4 | 660 | |
1da177e4 LT |
661 | kbuf[count - 1] = '\0'; |
662 | tmp = strchr(kbuf, '='); | |
663 | if (!tmp) | |
16c14b46 | 664 | return -EINVAL; |
1da177e4 LT |
665 | |
666 | *tmp++ = '\0'; | |
667 | ||
668 | if (!strcmp(kbuf, "partition_entitled_capacity")) { | |
669 | char *endp; | |
670 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
671 | if (endp == tmp) | |
16c14b46 | 672 | return -EINVAL; |
11529396 NF |
673 | |
674 | retval = update_ppp(new_entitled_ptr, NULL); | |
1da177e4 LT |
675 | } else if (!strcmp(kbuf, "capacity_weight")) { |
676 | char *endp; | |
677 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
678 | if (endp == tmp) | |
16c14b46 | 679 | return -EINVAL; |
1da177e4 | 680 | |
11529396 | 681 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
682 | } else if (!strcmp(kbuf, "entitled_memory")) { |
683 | char *endp; | |
684 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
685 | if (endp == tmp) | |
16c14b46 | 686 | return -EINVAL; |
dfc3403f NF |
687 | |
688 | retval = update_mpp(new_entitled_ptr, NULL); | |
689 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { | |
690 | char *endp; | |
691 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
692 | if (endp == tmp) | |
16c14b46 | 693 | return -EINVAL; |
dfc3403f NF |
694 | |
695 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 696 | } else |
16c14b46 | 697 | return -EINVAL; |
1da177e4 | 698 | |
706c8c93 | 699 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 700 | retval = count; |
706c8c93 | 701 | } else if (retval == H_BUSY) { |
1da177e4 | 702 | retval = -EBUSY; |
706c8c93 | 703 | } else if (retval == H_HARDWARE) { |
1da177e4 | 704 | retval = -EIO; |
706c8c93 | 705 | } else if (retval == H_PARAMETER) { |
1da177e4 | 706 | retval = -EINVAL; |
1da177e4 LT |
707 | } |
708 | ||
1da177e4 LT |
709 | return retval; |
710 | } | |
711 | ||
16e9f994 SR |
712 | #else /* CONFIG_PPC_PSERIES */ |
713 | ||
714 | static int pseries_lparcfg_data(struct seq_file *m, void *v) | |
715 | { | |
716 | return 0; | |
717 | } | |
718 | ||
719 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
720 | size_t count, loff_t * off) | |
721 | { | |
0524aad7 | 722 | return -EINVAL; |
16e9f994 SR |
723 | } |
724 | ||
1da177e4 LT |
725 | #endif /* CONFIG_PPC_PSERIES */ |
726 | ||
16e9f994 SR |
727 | static int lparcfg_data(struct seq_file *m, void *v) |
728 | { | |
729 | struct device_node *rootdn; | |
730 | const char *model = ""; | |
731 | const char *system_id = ""; | |
732 | const char *tmp; | |
a7f67bdf JK |
733 | const unsigned int *lp_index_ptr; |
734 | unsigned int lp_index = 0; | |
16e9f994 | 735 | |
8354be9c | 736 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
16e9f994 | 737 | |
8c8dc322 | 738 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 739 | if (rootdn) { |
e2eb6392 | 740 | tmp = of_get_property(rootdn, "model", NULL); |
16e9f994 SR |
741 | if (tmp) { |
742 | model = tmp; | |
743 | /* Skip "IBM," - see platforms/iseries/dt.c */ | |
744 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
745 | model += 4; | |
746 | } | |
e2eb6392 | 747 | tmp = of_get_property(rootdn, "system-id", NULL); |
16e9f994 SR |
748 | if (tmp) { |
749 | system_id = tmp; | |
750 | /* Skip "IBM," - see platforms/iseries/dt.c */ | |
751 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
752 | system_id += 4; | |
753 | } | |
e2eb6392 SR |
754 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
755 | NULL); | |
16e9f994 SR |
756 | if (lp_index_ptr) |
757 | lp_index = *lp_index_ptr; | |
8c8dc322 | 758 | of_node_put(rootdn); |
16e9f994 SR |
759 | } |
760 | seq_printf(m, "serial_number=%s\n", system_id); | |
761 | seq_printf(m, "system_type=%s\n", model); | |
762 | seq_printf(m, "partition_id=%d\n", (int)lp_index); | |
763 | ||
764 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
765 | return iseries_lparcfg_data(m, v); | |
766 | return pseries_lparcfg_data(m, v); | |
767 | } | |
768 | ||
1da177e4 LT |
769 | static int lparcfg_open(struct inode *inode, struct file *file) |
770 | { | |
771 | return single_open(file, lparcfg_data, NULL); | |
772 | } | |
773 | ||
1c21a293 | 774 | static const struct file_operations lparcfg_fops = { |
8acb888c AB |
775 | .owner = THIS_MODULE, |
776 | .read = seq_read, | |
0524aad7 | 777 | .write = lparcfg_write, |
8acb888c AB |
778 | .open = lparcfg_open, |
779 | .release = single_release, | |
6038f373 | 780 | .llseek = seq_lseek, |
1da177e4 LT |
781 | }; |
782 | ||
1c21a293 | 783 | static int __init lparcfg_init(void) |
1da177e4 LT |
784 | { |
785 | struct proc_dir_entry *ent; | |
d161a13f | 786 | umode_t mode = S_IRUSR | S_IRGRP | S_IROTH; |
1da177e4 LT |
787 | |
788 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
16e9f994 | 789 | if (firmware_has_feature(FW_FEATURE_SPLPAR) && |
0524aad7 | 790 | !firmware_has_feature(FW_FEATURE_ISERIES)) |
1da177e4 | 791 | mode |= S_IWUSR; |
1da177e4 | 792 | |
188917e1 | 793 | ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops); |
66747138 | 794 | if (!ent) { |
188917e1 | 795 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
1da177e4 LT |
796 | return -EIO; |
797 | } | |
798 | ||
799 | proc_ppc64_lparcfg = ent; | |
800 | return 0; | |
801 | } | |
802 | ||
1c21a293 | 803 | static void __exit lparcfg_cleanup(void) |
1da177e4 | 804 | { |
0d9dc4b4 | 805 | if (proc_ppc64_lparcfg) |
1da177e4 | 806 | remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); |
1da177e4 LT |
807 | } |
808 | ||
809 | module_init(lparcfg_init); | |
810 | module_exit(lparcfg_cleanup); | |
811 | MODULE_DESCRIPTION("Interface for LPAR configuration data"); | |
812 | MODULE_AUTHOR("Dave Engebretsen"); | |
813 | MODULE_LICENSE("GPL"); |