Commit | Line | Data |
---|---|---|
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> | |
27 | #include <asm/uaccess.h> | |
15b17189 | 28 | #include <asm/iseries/hv_lp_config.h> |
1da177e4 | 29 | #include <asm/lppaca.h> |
1da177e4 | 30 | #include <asm/hvcall.h> |
1ababe11 | 31 | #include <asm/firmware.h> |
1da177e4 LT |
32 | #include <asm/rtas.h> |
33 | #include <asm/system.h> | |
34 | #include <asm/time.h> | |
856509d5 | 35 | #include <asm/prom.h> |
271c3f35 | 36 | #include <asm/vdso_datapage.h> |
22e1a4dd | 37 | #include <asm/vio.h> |
46db2f86 | 38 | #include <asm/mmu.h> |
1da177e4 | 39 | |
dfc3403f | 40 | #define MODULE_VERS "1.8" |
1da177e4 LT |
41 | #define MODULE_NAME "lparcfg" |
42 | ||
43 | /* #define LPARCFG_DEBUG */ | |
44 | ||
1da177e4 | 45 | static struct proc_dir_entry *proc_ppc64_lparcfg; |
1da177e4 | 46 | |
1da177e4 | 47 | /* |
16e9f994 SR |
48 | * Track sum of all purrs across all processors. This is used to further |
49 | * calculate usage values by different applications | |
1da177e4 LT |
50 | */ |
51 | static unsigned long get_purr(void) | |
52 | { | |
53 | unsigned long sum_purr = 0; | |
54 | int cpu; | |
1da177e4 | 55 | |
0e551954 | 56 | for_each_possible_cpu(cpu) { |
16e9f994 SR |
57 | if (firmware_has_feature(FW_FEATURE_ISERIES)) |
58 | sum_purr += lppaca[cpu].emulated_time_base; | |
59 | else { | |
60 | struct cpu_usage *cu; | |
1da177e4 | 61 | |
16e9f994 SR |
62 | cu = &per_cpu(cpu_usage_array, cpu); |
63 | sum_purr += cu->current_tb; | |
64 | } | |
1da177e4 LT |
65 | } |
66 | return sum_purr; | |
67 | } | |
68 | ||
16e9f994 | 69 | #ifdef CONFIG_PPC_ISERIES |
1da177e4 | 70 | |
d3d2176a | 71 | /* |
1da177e4 LT |
72 | * Methods used to fetch LPAR data when running on an iSeries platform. |
73 | */ | |
16e9f994 | 74 | static int iseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 | 75 | { |
16e9f994 | 76 | unsigned long pool_id; |
1da177e4 LT |
77 | int shared, entitled_capacity, max_entitled_capacity; |
78 | int processors, max_processors; | |
1da177e4 LT |
79 | unsigned long purr = get_purr(); |
80 | ||
048c8bc9 | 81 | shared = (int)(local_paca->lppaca_ptr->shared_proc); |
1da177e4 LT |
82 | |
83 | seq_printf(m, "system_active_processors=%d\n", | |
84 | (int)HvLpConfig_getSystemPhysicalProcessors()); | |
85 | ||
86 | seq_printf(m, "system_potential_processors=%d\n", | |
87 | (int)HvLpConfig_getSystemPhysicalProcessors()); | |
88 | ||
89 | processors = (int)HvLpConfig_getPhysicalProcessors(); | |
90 | seq_printf(m, "partition_active_processors=%d\n", processors); | |
91 | ||
92 | max_processors = (int)HvLpConfig_getMaxPhysicalProcessors(); | |
93 | seq_printf(m, "partition_potential_processors=%d\n", max_processors); | |
94 | ||
95 | if (shared) { | |
96 | entitled_capacity = HvLpConfig_getSharedProcUnits(); | |
97 | max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits(); | |
98 | } else { | |
99 | entitled_capacity = processors * 100; | |
100 | max_entitled_capacity = max_processors * 100; | |
101 | } | |
102 | seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity); | |
103 | ||
104 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
105 | max_entitled_capacity); | |
106 | ||
107 | if (shared) { | |
108 | pool_id = HvLpConfig_getSharedPoolIndex(); | |
109 | seq_printf(m, "pool=%d\n", (int)pool_id); | |
110 | seq_printf(m, "pool_capacity=%d\n", | |
111 | (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) * | |
112 | 100)); | |
113 | seq_printf(m, "purr=%ld\n", purr); | |
114 | } | |
115 | ||
116 | seq_printf(m, "shared_processor_mode=%d\n", shared); | |
117 | ||
118 | return 0; | |
119 | } | |
16e9f994 SR |
120 | |
121 | #else /* CONFIG_PPC_ISERIES */ | |
122 | ||
123 | static int iseries_lparcfg_data(struct seq_file *m, void *v) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
1da177e4 LT |
128 | #endif /* CONFIG_PPC_ISERIES */ |
129 | ||
130 | #ifdef CONFIG_PPC_PSERIES | |
d3d2176a | 131 | /* |
1da177e4 LT |
132 | * Methods used to fetch LPAR data when running on a pSeries platform. |
133 | */ | |
dfc3403f NF |
134 | /** |
135 | * h_get_mpp | |
136 | * H_GET_MPP hcall returns info in 7 parms | |
137 | */ | |
138 | int h_get_mpp(struct hvcall_mpp_data *mpp_data) | |
139 | { | |
140 | int rc; | |
141 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; | |
142 | ||
143 | rc = plpar_hcall9(H_GET_MPP, retbuf); | |
144 | ||
145 | mpp_data->entitled_mem = retbuf[0]; | |
146 | mpp_data->mapped_mem = retbuf[1]; | |
147 | ||
148 | mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
149 | mpp_data->pool_num = retbuf[2] & 0xffff; | |
150 | ||
151 | mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff; | |
152 | mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff; | |
153 | mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffff; | |
154 | ||
155 | mpp_data->pool_size = retbuf[4]; | |
156 | mpp_data->loan_request = retbuf[5]; | |
157 | mpp_data->backing_mem = retbuf[6]; | |
158 | ||
159 | return rc; | |
160 | } | |
161 | EXPORT_SYMBOL(h_get_mpp); | |
162 | ||
398778f7 RJ |
163 | struct hvcall_ppp_data { |
164 | u64 entitlement; | |
165 | u64 unallocated_entitlement; | |
166 | u16 group_num; | |
167 | u16 pool_num; | |
168 | u8 capped; | |
169 | u8 weight; | |
170 | u8 unallocated_weight; | |
171 | u16 active_procs_in_pool; | |
172 | u16 active_system_procs; | |
f03cdb3a NF |
173 | u16 phys_platform_procs; |
174 | u32 max_proc_cap_avail; | |
175 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
176 | }; |
177 | ||
1da177e4 LT |
178 | /* |
179 | * H_GET_PPP hcall returns info in 4 parms. | |
180 | * entitled_capacity,unallocated_capacity, | |
181 | * aggregation, resource_capability). | |
182 | * | |
d3d2176a | 183 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
184 | * R5 = Unallocated Processor Capacity Percentage. |
185 | * R6 (AABBCCDDEEFFGGHH). | |
186 | * XXXX - reserved (0) | |
187 | * XXXX - reserved (0) | |
188 | * XXXX - Group Number | |
189 | * XXXX - Pool Number. | |
190 | * R7 (IIJJKKLLMMNNOOPP). | |
191 | * XX - reserved. (0) | |
192 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. | |
193 | * XX - variable processor Capacity Weight | |
194 | * XX - Unallocated Variable Processor Capacity Weight. | |
195 | * XXXX - Active processors in Physical Processor Pool. | |
d3d2176a | 196 | * XXXX - Processors active on platform. |
f03cdb3a NF |
197 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
198 | * XXXX - Physical platform procs allocated to virtualization. | |
199 | * XXXXXX - Max procs capacity % available to the partitions pool. | |
200 | * XXXXXX - Entitled procs capacity % available to the | |
201 | * partitions pool. | |
1da177e4 | 202 | */ |
398778f7 | 203 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 LT |
204 | { |
205 | unsigned long rc; | |
f03cdb3a | 206 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
b9377ffc | 207 | |
f03cdb3a | 208 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 209 | |
398778f7 RJ |
210 | ppp_data->entitlement = retbuf[0]; |
211 | ppp_data->unallocated_entitlement = retbuf[1]; | |
212 | ||
213 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
214 | ppp_data->pool_num = retbuf[2] & 0xffff; | |
215 | ||
216 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; | |
217 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; | |
218 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; | |
219 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; | |
220 | ppp_data->active_system_procs = retbuf[3] & 0xffff; | |
1da177e4 | 221 | |
f03cdb3a NF |
222 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
223 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; | |
224 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; | |
225 | ||
1da177e4 LT |
226 | return rc; |
227 | } | |
228 | ||
11529396 NF |
229 | static unsigned h_pic(unsigned long *pool_idle_time, |
230 | unsigned long *num_procs) | |
1da177e4 LT |
231 | { |
232 | unsigned long rc; | |
b9377ffc AB |
233 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
234 | ||
235 | rc = plpar_hcall(H_PIC, retbuf); | |
236 | ||
237 | *pool_idle_time = retbuf[0]; | |
238 | *num_procs = retbuf[1]; | |
11529396 NF |
239 | |
240 | return rc; | |
241 | } | |
242 | ||
243 | /* | |
244 | * parse_ppp_data | |
245 | * Parse out the data returned from h_get_ppp and h_pic | |
246 | */ | |
247 | static void parse_ppp_data(struct seq_file *m) | |
248 | { | |
398778f7 | 249 | struct hvcall_ppp_data ppp_data; |
f03cdb3a NF |
250 | struct device_node *root; |
251 | const int *perf_level; | |
11529396 NF |
252 | int rc; |
253 | ||
398778f7 | 254 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
255 | if (rc) |
256 | return; | |
257 | ||
fe333321 | 258 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
259 | ppp_data.entitlement); |
260 | seq_printf(m, "group=%d\n", ppp_data.group_num); | |
261 | seq_printf(m, "system_active_processors=%d\n", | |
262 | ppp_data.active_system_procs); | |
11529396 NF |
263 | |
264 | /* pool related entries are apropriate for shared configs */ | |
265 | if (lppaca[0].shared_proc) { | |
266 | unsigned long pool_idle_time, pool_procs; | |
267 | ||
398778f7 | 268 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
269 | |
270 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
271 | seq_printf(m, "pool_capacity=%d\n", |
272 | ppp_data.active_procs_in_pool * 100); | |
11529396 NF |
273 | |
274 | h_pic(&pool_idle_time, &pool_procs); | |
275 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); | |
276 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); | |
277 | } | |
278 | ||
398778f7 RJ |
279 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
280 | ppp_data.unallocated_weight); | |
281 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); | |
282 | seq_printf(m, "capped=%d\n", ppp_data.capped); | |
fe333321 | 283 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 284 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
285 | |
286 | /* The last bits of information returned from h_get_ppp are only | |
287 | * valid if the ibm,partition-performance-parameters-level | |
288 | * property is >= 1. | |
289 | */ | |
290 | root = of_find_node_by_path("/"); | |
291 | if (root) { | |
292 | perf_level = of_get_property(root, | |
293 | "ibm,partition-performance-parameters-level", | |
294 | NULL); | |
295 | if (perf_level && (*perf_level >= 1)) { | |
296 | seq_printf(m, | |
297 | "physical_procs_allocated_to_virtualization=%d\n", | |
298 | ppp_data.phys_platform_procs); | |
299 | seq_printf(m, "max_proc_capacity_available=%d\n", | |
300 | ppp_data.max_proc_cap_avail); | |
301 | seq_printf(m, "entitled_proc_capacity_available=%d\n", | |
302 | ppp_data.entitled_proc_cap_avail); | |
303 | } | |
304 | ||
305 | of_node_put(root); | |
306 | } | |
1da177e4 LT |
307 | } |
308 | ||
dfc3403f NF |
309 | /** |
310 | * parse_mpp_data | |
311 | * Parse out data returned from h_get_mpp | |
312 | */ | |
313 | static void parse_mpp_data(struct seq_file *m) | |
314 | { | |
315 | struct hvcall_mpp_data mpp_data; | |
316 | int rc; | |
317 | ||
318 | rc = h_get_mpp(&mpp_data); | |
319 | if (rc) | |
320 | return; | |
321 | ||
322 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); | |
323 | ||
324 | if (mpp_data.mapped_mem != -1) | |
325 | seq_printf(m, "mapped_entitled_memory=%ld\n", | |
326 | mpp_data.mapped_mem); | |
327 | ||
328 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); | |
329 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); | |
330 | ||
331 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); | |
332 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", | |
333 | mpp_data.unallocated_mem_weight); | |
334 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", | |
335 | mpp_data.unallocated_entitlement); | |
336 | ||
337 | if (mpp_data.pool_size != -1) | |
338 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", | |
339 | mpp_data.pool_size); | |
340 | ||
341 | seq_printf(m, "entitled_memory_loan_request=%ld\n", | |
342 | mpp_data.loan_request); | |
343 | ||
344 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); | |
345 | } | |
346 | ||
1da177e4 LT |
347 | #define SPLPAR_CHARACTERISTICS_TOKEN 20 |
348 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) | |
349 | ||
350 | /* | |
351 | * parse_system_parameter_string() | |
352 | * Retrieve the potential_processors, max_entitled_capacity and friends | |
353 | * through the get-system-parameter rtas call. Replace keyword strings as | |
354 | * necessary. | |
355 | */ | |
356 | static void parse_system_parameter_string(struct seq_file *m) | |
357 | { | |
358 | int call_status; | |
359 | ||
34422fed | 360 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 LT |
361 | if (!local_buffer) { |
362 | printk(KERN_ERR "%s %s kmalloc failure at line %d \n", | |
e48b1b45 | 363 | __FILE__, __func__, __LINE__); |
1da177e4 LT |
364 | return; |
365 | } | |
366 | ||
367 | spin_lock(&rtas_data_buf_lock); | |
368 | memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); | |
369 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, | |
370 | NULL, | |
371 | SPLPAR_CHARACTERISTICS_TOKEN, | |
34422fed WS |
372 | __pa(rtas_data_buf), |
373 | RTAS_DATA_BUF_SIZE); | |
1da177e4 LT |
374 | memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); |
375 | spin_unlock(&rtas_data_buf_lock); | |
376 | ||
377 | if (call_status != 0) { | |
378 | printk(KERN_INFO | |
379 | "%s %s Error calling get-system-parameter (0x%x)\n", | |
e48b1b45 | 380 | __FILE__, __func__, call_status); |
1da177e4 LT |
381 | } else { |
382 | int splpar_strlen; | |
383 | int idx, w_idx; | |
dd00cc48 | 384 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 LT |
385 | if (!workbuffer) { |
386 | printk(KERN_ERR "%s %s kmalloc failure at line %d \n", | |
e48b1b45 | 387 | __FILE__, __func__, __LINE__); |
d3d2176a | 388 | kfree(local_buffer); |
1da177e4 LT |
389 | return; |
390 | } | |
391 | #ifdef LPARCFG_DEBUG | |
392 | printk(KERN_INFO "success calling get-system-parameter \n"); | |
393 | #endif | |
34422fed | 394 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
1da177e4 LT |
395 | local_buffer += 2; /* step over strlen value */ |
396 | ||
1da177e4 LT |
397 | w_idx = 0; |
398 | idx = 0; | |
399 | while ((*local_buffer) && (idx < splpar_strlen)) { | |
400 | workbuffer[w_idx++] = local_buffer[idx++]; | |
401 | if ((local_buffer[idx] == ',') | |
402 | || (local_buffer[idx] == '\0')) { | |
403 | workbuffer[w_idx] = '\0'; | |
404 | if (w_idx) { | |
405 | /* avoid the empty string */ | |
406 | seq_printf(m, "%s\n", workbuffer); | |
407 | } | |
408 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); | |
409 | idx++; /* skip the comma */ | |
410 | w_idx = 0; | |
411 | } else if (local_buffer[idx] == '=') { | |
412 | /* code here to replace workbuffer contents | |
413 | with different keyword strings */ | |
414 | if (0 == strcmp(workbuffer, "MaxEntCap")) { | |
415 | strcpy(workbuffer, | |
416 | "partition_max_entitled_capacity"); | |
417 | w_idx = strlen(workbuffer); | |
418 | } | |
419 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { | |
420 | strcpy(workbuffer, | |
421 | "system_potential_processors"); | |
422 | w_idx = strlen(workbuffer); | |
423 | } | |
424 | } | |
425 | } | |
426 | kfree(workbuffer); | |
427 | local_buffer -= 2; /* back up over strlen value */ | |
428 | } | |
429 | kfree(local_buffer); | |
430 | } | |
431 | ||
1da177e4 LT |
432 | /* Return the number of processors in the system. |
433 | * This function reads through the device tree and counts | |
434 | * the virtual processors, this does not include threads. | |
435 | */ | |
436 | static int lparcfg_count_active_processors(void) | |
437 | { | |
438 | struct device_node *cpus_dn = NULL; | |
439 | int count = 0; | |
440 | ||
441 | while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) { | |
442 | #ifdef LPARCFG_DEBUG | |
443 | printk(KERN_ERR "cpus_dn %p \n", cpus_dn); | |
444 | #endif | |
445 | count++; | |
446 | } | |
447 | return count; | |
448 | } | |
449 | ||
ffa5abbd BK |
450 | static void pseries_cmo_data(struct seq_file *m) |
451 | { | |
452 | int cpu; | |
453 | unsigned long cmo_faults = 0; | |
454 | unsigned long cmo_fault_time = 0; | |
455 | ||
ac22429d RJ |
456 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
457 | ||
ffa5abbd BK |
458 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
459 | return; | |
460 | ||
461 | for_each_possible_cpu(cpu) { | |
462 | cmo_faults += lppaca[cpu].cmo_faults; | |
463 | cmo_fault_time += lppaca[cpu].cmo_fault_time; | |
464 | } | |
465 | ||
466 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); | |
467 | seq_printf(m, "cmo_fault_time_usec=%lu\n", | |
468 | cmo_fault_time / tb_ticks_per_usec); | |
ac22429d RJ |
469 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
470 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); | |
471 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); | |
ffa5abbd BK |
472 | } |
473 | ||
0559f0a7 AB |
474 | static void splpar_dispatch_data(struct seq_file *m) |
475 | { | |
476 | int cpu; | |
477 | unsigned long dispatches = 0; | |
478 | unsigned long dispatch_dispersions = 0; | |
479 | ||
480 | for_each_possible_cpu(cpu) { | |
481 | dispatches += lppaca[cpu].yield_count; | |
482 | dispatch_dispersions += lppaca[cpu].dispersion_count; | |
483 | } | |
484 | ||
485 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
486 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
487 | } | |
488 | ||
16e9f994 | 489 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
490 | { |
491 | int partition_potential_processors; | |
492 | int partition_active_processors; | |
1da177e4 | 493 | struct device_node *rtas_node; |
a7f67bdf | 494 | const int *lrdrp = NULL; |
1da177e4 | 495 | |
8c8dc322 | 496 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 497 | if (rtas_node) |
e2eb6392 | 498 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
499 | |
500 | if (lrdrp == NULL) { | |
271c3f35 | 501 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 LT |
502 | } else { |
503 | partition_potential_processors = *(lrdrp + 4); | |
504 | } | |
8c8dc322 | 505 | of_node_put(rtas_node); |
1da177e4 LT |
506 | |
507 | partition_active_processors = lparcfg_count_active_processors(); | |
508 | ||
1ababe11 | 509 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 LT |
510 | /* this call handles the ibm,get-system-parameter contents */ |
511 | parse_system_parameter_string(m); | |
11529396 | 512 | parse_ppp_data(m); |
dfc3403f | 513 | parse_mpp_data(m); |
ffa5abbd | 514 | pseries_cmo_data(m); |
0559f0a7 | 515 | splpar_dispatch_data(m); |
1da177e4 | 516 | |
11529396 | 517 | seq_printf(m, "purr=%ld\n", get_purr()); |
1da177e4 LT |
518 | } else { /* non SPLPAR case */ |
519 | ||
520 | seq_printf(m, "system_active_processors=%d\n", | |
521 | partition_potential_processors); | |
522 | ||
523 | seq_printf(m, "system_potential_processors=%d\n", | |
524 | partition_potential_processors); | |
525 | ||
526 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
527 | partition_potential_processors * 100); | |
528 | ||
529 | seq_printf(m, "partition_entitled_capacity=%d\n", | |
530 | partition_active_processors * 100); | |
531 | } | |
532 | ||
533 | seq_printf(m, "partition_active_processors=%d\n", | |
534 | partition_active_processors); | |
535 | ||
536 | seq_printf(m, "partition_potential_processors=%d\n", | |
537 | partition_potential_processors); | |
538 | ||
3356bb9f | 539 | seq_printf(m, "shared_processor_mode=%d\n", lppaca[0].shared_proc); |
1da177e4 | 540 | |
46db2f86 BK |
541 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
542 | ||
1da177e4 LT |
543 | return 0; |
544 | } | |
545 | ||
11529396 NF |
546 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
547 | { | |
398778f7 RJ |
548 | struct hvcall_ppp_data ppp_data; |
549 | u8 new_weight; | |
11529396 NF |
550 | u64 new_entitled; |
551 | ssize_t retval; | |
552 | ||
553 | /* Get our current parameters */ | |
398778f7 | 554 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
555 | if (retval) |
556 | return retval; | |
557 | ||
11529396 | 558 | if (entitlement) { |
398778f7 | 559 | new_weight = ppp_data.weight; |
11529396 NF |
560 | new_entitled = *entitlement; |
561 | } else if (weight) { | |
562 | new_weight = *weight; | |
398778f7 | 563 | new_entitled = ppp_data.entitlement; |
11529396 NF |
564 | } else |
565 | return -EINVAL; | |
566 | ||
fe333321 | 567 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 568 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 569 | |
fe333321 | 570 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 571 | __func__, new_entitled, new_weight); |
11529396 NF |
572 | |
573 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
574 | return retval; | |
575 | } | |
576 | ||
dfc3403f NF |
577 | /** |
578 | * update_mpp | |
579 | * | |
580 | * Update the memory entitlement and weight for the partition. Caller must | |
581 | * specify either a new entitlement or weight, not both, to be updated | |
582 | * since the h_set_mpp call takes both entitlement and weight as parameters. | |
583 | */ | |
584 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) | |
585 | { | |
586 | struct hvcall_mpp_data mpp_data; | |
587 | u64 new_entitled; | |
588 | u8 new_weight; | |
589 | ssize_t rc; | |
590 | ||
22e1a4dd NF |
591 | if (entitlement) { |
592 | /* Check with vio to ensure the new memory entitlement | |
593 | * can be handled. | |
594 | */ | |
595 | rc = vio_cmo_entitlement_update(*entitlement); | |
596 | if (rc) | |
597 | return rc; | |
598 | } | |
599 | ||
dfc3403f NF |
600 | rc = h_get_mpp(&mpp_data); |
601 | if (rc) | |
602 | return rc; | |
603 | ||
604 | if (entitlement) { | |
605 | new_weight = mpp_data.mem_weight; | |
606 | new_entitled = *entitlement; | |
607 | } else if (weight) { | |
608 | new_weight = *weight; | |
609 | new_entitled = mpp_data.entitled_mem; | |
610 | } else | |
611 | return -EINVAL; | |
612 | ||
613 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", | |
5df72bf3 | 614 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 615 | |
fe333321 | 616 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 617 | __func__, new_entitled, new_weight); |
dfc3403f NF |
618 | |
619 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
620 | return rc; | |
621 | } | |
622 | ||
1da177e4 LT |
623 | /* |
624 | * Interface for changing system parameters (variable capacity weight | |
625 | * and entitled capacity). Format of input is "param_name=value"; | |
626 | * anything after value is ignored. Valid parameters at this time are | |
627 | * "partition_entitled_capacity" and "capacity_weight". We use | |
628 | * H_SET_PPP to alter parameters. | |
629 | * | |
630 | * This function should be invoked only on systems with | |
631 | * FW_FEATURE_SPLPAR. | |
632 | */ | |
633 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
634 | size_t count, loff_t * off) | |
635 | { | |
16c14b46 NF |
636 | int kbuf_sz = 64; |
637 | char kbuf[kbuf_sz]; | |
1da177e4 LT |
638 | char *tmp; |
639 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
640 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 641 | ssize_t retval; |
1da177e4 | 642 | |
0524aad7 SR |
643 | if (!firmware_has_feature(FW_FEATURE_SPLPAR) || |
644 | firmware_has_feature(FW_FEATURE_ISERIES)) | |
645 | return -EINVAL; | |
646 | ||
16c14b46 NF |
647 | if (count > kbuf_sz) |
648 | return -EINVAL; | |
1da177e4 | 649 | |
1da177e4 | 650 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 651 | return -EFAULT; |
1da177e4 | 652 | |
1da177e4 LT |
653 | kbuf[count - 1] = '\0'; |
654 | tmp = strchr(kbuf, '='); | |
655 | if (!tmp) | |
16c14b46 | 656 | return -EINVAL; |
1da177e4 LT |
657 | |
658 | *tmp++ = '\0'; | |
659 | ||
660 | if (!strcmp(kbuf, "partition_entitled_capacity")) { | |
661 | char *endp; | |
662 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
663 | if (endp == tmp) | |
16c14b46 | 664 | return -EINVAL; |
11529396 NF |
665 | |
666 | retval = update_ppp(new_entitled_ptr, NULL); | |
1da177e4 LT |
667 | } else if (!strcmp(kbuf, "capacity_weight")) { |
668 | char *endp; | |
669 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
670 | if (endp == tmp) | |
16c14b46 | 671 | return -EINVAL; |
1da177e4 | 672 | |
11529396 | 673 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
674 | } else if (!strcmp(kbuf, "entitled_memory")) { |
675 | char *endp; | |
676 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
677 | if (endp == tmp) | |
16c14b46 | 678 | return -EINVAL; |
dfc3403f NF |
679 | |
680 | retval = update_mpp(new_entitled_ptr, NULL); | |
681 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { | |
682 | char *endp; | |
683 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
684 | if (endp == tmp) | |
16c14b46 | 685 | return -EINVAL; |
dfc3403f NF |
686 | |
687 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 688 | } else |
16c14b46 | 689 | return -EINVAL; |
1da177e4 | 690 | |
706c8c93 | 691 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 692 | retval = count; |
706c8c93 | 693 | } else if (retval == H_BUSY) { |
1da177e4 | 694 | retval = -EBUSY; |
706c8c93 | 695 | } else if (retval == H_HARDWARE) { |
1da177e4 | 696 | retval = -EIO; |
706c8c93 | 697 | } else if (retval == H_PARAMETER) { |
1da177e4 | 698 | retval = -EINVAL; |
1da177e4 LT |
699 | } |
700 | ||
1da177e4 LT |
701 | return retval; |
702 | } | |
703 | ||
16e9f994 SR |
704 | #else /* CONFIG_PPC_PSERIES */ |
705 | ||
706 | static int pseries_lparcfg_data(struct seq_file *m, void *v) | |
707 | { | |
708 | return 0; | |
709 | } | |
710 | ||
711 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
712 | size_t count, loff_t * off) | |
713 | { | |
0524aad7 | 714 | return -EINVAL; |
16e9f994 SR |
715 | } |
716 | ||
1da177e4 LT |
717 | #endif /* CONFIG_PPC_PSERIES */ |
718 | ||
16e9f994 SR |
719 | static int lparcfg_data(struct seq_file *m, void *v) |
720 | { | |
721 | struct device_node *rootdn; | |
722 | const char *model = ""; | |
723 | const char *system_id = ""; | |
724 | const char *tmp; | |
a7f67bdf JK |
725 | const unsigned int *lp_index_ptr; |
726 | unsigned int lp_index = 0; | |
16e9f994 SR |
727 | |
728 | seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS); | |
729 | ||
8c8dc322 | 730 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 731 | if (rootdn) { |
e2eb6392 | 732 | tmp = of_get_property(rootdn, "model", NULL); |
16e9f994 SR |
733 | if (tmp) { |
734 | model = tmp; | |
735 | /* Skip "IBM," - see platforms/iseries/dt.c */ | |
736 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
737 | model += 4; | |
738 | } | |
e2eb6392 | 739 | tmp = of_get_property(rootdn, "system-id", NULL); |
16e9f994 SR |
740 | if (tmp) { |
741 | system_id = tmp; | |
742 | /* Skip "IBM," - see platforms/iseries/dt.c */ | |
743 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
744 | system_id += 4; | |
745 | } | |
e2eb6392 SR |
746 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
747 | NULL); | |
16e9f994 SR |
748 | if (lp_index_ptr) |
749 | lp_index = *lp_index_ptr; | |
8c8dc322 | 750 | of_node_put(rootdn); |
16e9f994 SR |
751 | } |
752 | seq_printf(m, "serial_number=%s\n", system_id); | |
753 | seq_printf(m, "system_type=%s\n", model); | |
754 | seq_printf(m, "partition_id=%d\n", (int)lp_index); | |
755 | ||
756 | if (firmware_has_feature(FW_FEATURE_ISERIES)) | |
757 | return iseries_lparcfg_data(m, v); | |
758 | return pseries_lparcfg_data(m, v); | |
759 | } | |
760 | ||
1da177e4 LT |
761 | static int lparcfg_open(struct inode *inode, struct file *file) |
762 | { | |
763 | return single_open(file, lparcfg_data, NULL); | |
764 | } | |
765 | ||
1c21a293 | 766 | static const struct file_operations lparcfg_fops = { |
8acb888c AB |
767 | .owner = THIS_MODULE, |
768 | .read = seq_read, | |
0524aad7 | 769 | .write = lparcfg_write, |
8acb888c AB |
770 | .open = lparcfg_open, |
771 | .release = single_release, | |
1da177e4 LT |
772 | }; |
773 | ||
1c21a293 | 774 | static int __init lparcfg_init(void) |
1da177e4 LT |
775 | { |
776 | struct proc_dir_entry *ent; | |
71839267 | 777 | mode_t mode = S_IRUSR | S_IRGRP | S_IROTH; |
1da177e4 LT |
778 | |
779 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
16e9f994 | 780 | if (firmware_has_feature(FW_FEATURE_SPLPAR) && |
0524aad7 | 781 | !firmware_has_feature(FW_FEATURE_ISERIES)) |
1da177e4 | 782 | mode |= S_IWUSR; |
1da177e4 | 783 | |
66747138 DL |
784 | ent = proc_create("ppc64/lparcfg", mode, NULL, &lparcfg_fops); |
785 | if (!ent) { | |
1da177e4 LT |
786 | printk(KERN_ERR "Failed to create ppc64/lparcfg\n"); |
787 | return -EIO; | |
788 | } | |
789 | ||
790 | proc_ppc64_lparcfg = ent; | |
791 | return 0; | |
792 | } | |
793 | ||
1c21a293 | 794 | static void __exit lparcfg_cleanup(void) |
1da177e4 | 795 | { |
0d9dc4b4 | 796 | if (proc_ppc64_lparcfg) |
1da177e4 | 797 | remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); |
1da177e4 LT |
798 | } |
799 | ||
800 | module_init(lparcfg_init); | |
801 | module_exit(lparcfg_cleanup); | |
802 | MODULE_DESCRIPTION("Interface for LPAR configuration data"); | |
803 | MODULE_AUTHOR("Dave Engebretsen"); | |
804 | MODULE_LICENSE("GPL"); |