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> |
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 | |
6fe9d1fa | 40 | #define MODULE_VERS "1.9" |
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) { |
f5339277 | 57 | struct cpu_usage *cu; |
1da177e4 | 58 | |
f5339277 SR |
59 | cu = &per_cpu(cpu_usage_array, cpu); |
60 | sum_purr += cu->current_tb; | |
1da177e4 LT |
61 | } |
62 | return sum_purr; | |
63 | } | |
64 | ||
d3d2176a | 65 | /* |
1da177e4 LT |
66 | * Methods used to fetch LPAR data when running on a pSeries platform. |
67 | */ | |
dfc3403f | 68 | |
398778f7 RJ |
69 | struct hvcall_ppp_data { |
70 | u64 entitlement; | |
71 | u64 unallocated_entitlement; | |
72 | u16 group_num; | |
73 | u16 pool_num; | |
74 | u8 capped; | |
75 | u8 weight; | |
76 | u8 unallocated_weight; | |
77 | u16 active_procs_in_pool; | |
78 | u16 active_system_procs; | |
f03cdb3a NF |
79 | u16 phys_platform_procs; |
80 | u32 max_proc_cap_avail; | |
81 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
82 | }; |
83 | ||
1da177e4 LT |
84 | /* |
85 | * H_GET_PPP hcall returns info in 4 parms. | |
86 | * entitled_capacity,unallocated_capacity, | |
87 | * aggregation, resource_capability). | |
88 | * | |
d3d2176a | 89 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
90 | * R5 = Unallocated Processor Capacity Percentage. |
91 | * R6 (AABBCCDDEEFFGGHH). | |
92 | * XXXX - reserved (0) | |
93 | * XXXX - reserved (0) | |
94 | * XXXX - Group Number | |
95 | * XXXX - Pool Number. | |
96 | * R7 (IIJJKKLLMMNNOOPP). | |
97 | * XX - reserved. (0) | |
98 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. | |
99 | * XX - variable processor Capacity Weight | |
100 | * XX - Unallocated Variable Processor Capacity Weight. | |
101 | * XXXX - Active processors in Physical Processor Pool. | |
d3d2176a | 102 | * XXXX - Processors active on platform. |
f03cdb3a NF |
103 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
104 | * XXXX - Physical platform procs allocated to virtualization. | |
105 | * XXXXXX - Max procs capacity % available to the partitions pool. | |
106 | * XXXXXX - Entitled procs capacity % available to the | |
107 | * partitions pool. | |
1da177e4 | 108 | */ |
398778f7 | 109 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 LT |
110 | { |
111 | unsigned long rc; | |
f03cdb3a | 112 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
b9377ffc | 113 | |
f03cdb3a | 114 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 115 | |
398778f7 RJ |
116 | ppp_data->entitlement = retbuf[0]; |
117 | ppp_data->unallocated_entitlement = retbuf[1]; | |
118 | ||
119 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
120 | ppp_data->pool_num = retbuf[2] & 0xffff; | |
121 | ||
122 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; | |
123 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; | |
124 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; | |
125 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; | |
126 | ppp_data->active_system_procs = retbuf[3] & 0xffff; | |
1da177e4 | 127 | |
f03cdb3a NF |
128 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
129 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; | |
130 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; | |
131 | ||
1da177e4 LT |
132 | return rc; |
133 | } | |
134 | ||
11529396 NF |
135 | static unsigned h_pic(unsigned long *pool_idle_time, |
136 | unsigned long *num_procs) | |
1da177e4 LT |
137 | { |
138 | unsigned long rc; | |
b9377ffc AB |
139 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
140 | ||
141 | rc = plpar_hcall(H_PIC, retbuf); | |
142 | ||
143 | *pool_idle_time = retbuf[0]; | |
144 | *num_procs = retbuf[1]; | |
11529396 NF |
145 | |
146 | return rc; | |
147 | } | |
148 | ||
149 | /* | |
150 | * parse_ppp_data | |
151 | * Parse out the data returned from h_get_ppp and h_pic | |
152 | */ | |
153 | static void parse_ppp_data(struct seq_file *m) | |
154 | { | |
398778f7 | 155 | struct hvcall_ppp_data ppp_data; |
f03cdb3a NF |
156 | struct device_node *root; |
157 | const int *perf_level; | |
11529396 NF |
158 | int rc; |
159 | ||
398778f7 | 160 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
161 | if (rc) |
162 | return; | |
163 | ||
fe333321 | 164 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
165 | ppp_data.entitlement); |
166 | seq_printf(m, "group=%d\n", ppp_data.group_num); | |
167 | seq_printf(m, "system_active_processors=%d\n", | |
168 | ppp_data.active_system_procs); | |
11529396 | 169 | |
25985edc | 170 | /* pool related entries are appropriate for shared configs */ |
8154c5d2 | 171 | if (lppaca_of(0).shared_proc) { |
11529396 NF |
172 | unsigned long pool_idle_time, pool_procs; |
173 | ||
398778f7 | 174 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
175 | |
176 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
177 | seq_printf(m, "pool_capacity=%d\n", |
178 | ppp_data.active_procs_in_pool * 100); | |
11529396 NF |
179 | |
180 | h_pic(&pool_idle_time, &pool_procs); | |
181 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); | |
182 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); | |
183 | } | |
184 | ||
398778f7 RJ |
185 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
186 | ppp_data.unallocated_weight); | |
187 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); | |
188 | seq_printf(m, "capped=%d\n", ppp_data.capped); | |
fe333321 | 189 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 190 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
191 | |
192 | /* The last bits of information returned from h_get_ppp are only | |
193 | * valid if the ibm,partition-performance-parameters-level | |
194 | * property is >= 1. | |
195 | */ | |
196 | root = of_find_node_by_path("/"); | |
197 | if (root) { | |
198 | perf_level = of_get_property(root, | |
199 | "ibm,partition-performance-parameters-level", | |
200 | NULL); | |
201 | if (perf_level && (*perf_level >= 1)) { | |
202 | seq_printf(m, | |
203 | "physical_procs_allocated_to_virtualization=%d\n", | |
204 | ppp_data.phys_platform_procs); | |
205 | seq_printf(m, "max_proc_capacity_available=%d\n", | |
206 | ppp_data.max_proc_cap_avail); | |
207 | seq_printf(m, "entitled_proc_capacity_available=%d\n", | |
208 | ppp_data.entitled_proc_cap_avail); | |
209 | } | |
210 | ||
211 | of_node_put(root); | |
212 | } | |
1da177e4 LT |
213 | } |
214 | ||
dfc3403f NF |
215 | /** |
216 | * parse_mpp_data | |
217 | * Parse out data returned from h_get_mpp | |
218 | */ | |
219 | static void parse_mpp_data(struct seq_file *m) | |
220 | { | |
221 | struct hvcall_mpp_data mpp_data; | |
222 | int rc; | |
223 | ||
224 | rc = h_get_mpp(&mpp_data); | |
225 | if (rc) | |
226 | return; | |
227 | ||
228 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); | |
229 | ||
230 | if (mpp_data.mapped_mem != -1) | |
231 | seq_printf(m, "mapped_entitled_memory=%ld\n", | |
232 | mpp_data.mapped_mem); | |
233 | ||
234 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); | |
235 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); | |
236 | ||
237 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); | |
238 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", | |
239 | mpp_data.unallocated_mem_weight); | |
240 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", | |
241 | mpp_data.unallocated_entitlement); | |
242 | ||
243 | if (mpp_data.pool_size != -1) | |
244 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", | |
245 | mpp_data.pool_size); | |
246 | ||
247 | seq_printf(m, "entitled_memory_loan_request=%ld\n", | |
248 | mpp_data.loan_request); | |
249 | ||
250 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); | |
251 | } | |
252 | ||
9ee820fa BK |
253 | /** |
254 | * parse_mpp_x_data | |
255 | * Parse out data returned from h_get_mpp_x | |
256 | */ | |
257 | static void parse_mpp_x_data(struct seq_file *m) | |
258 | { | |
259 | struct hvcall_mpp_x_data mpp_x_data; | |
260 | ||
261 | if (!firmware_has_feature(FW_FEATURE_XCMO)) | |
262 | return; | |
263 | if (h_get_mpp_x(&mpp_x_data)) | |
264 | return; | |
265 | ||
266 | seq_printf(m, "coalesced_bytes=%ld\n", mpp_x_data.coalesced_bytes); | |
267 | ||
268 | if (mpp_x_data.pool_coalesced_bytes) | |
269 | seq_printf(m, "pool_coalesced_bytes=%ld\n", | |
270 | mpp_x_data.pool_coalesced_bytes); | |
271 | if (mpp_x_data.pool_purr_cycles) | |
272 | seq_printf(m, "coalesce_pool_purr=%ld\n", mpp_x_data.pool_purr_cycles); | |
273 | if (mpp_x_data.pool_spurr_cycles) | |
274 | seq_printf(m, "coalesce_pool_spurr=%ld\n", mpp_x_data.pool_spurr_cycles); | |
275 | } | |
276 | ||
1da177e4 LT |
277 | #define SPLPAR_CHARACTERISTICS_TOKEN 20 |
278 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) | |
279 | ||
280 | /* | |
281 | * parse_system_parameter_string() | |
282 | * Retrieve the potential_processors, max_entitled_capacity and friends | |
283 | * through the get-system-parameter rtas call. Replace keyword strings as | |
284 | * necessary. | |
285 | */ | |
286 | static void parse_system_parameter_string(struct seq_file *m) | |
287 | { | |
288 | int call_status; | |
289 | ||
34422fed | 290 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 291 | if (!local_buffer) { |
8354be9c | 292 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 293 | __FILE__, __func__, __LINE__); |
1da177e4 LT |
294 | return; |
295 | } | |
296 | ||
297 | spin_lock(&rtas_data_buf_lock); | |
298 | memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); | |
299 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, | |
300 | NULL, | |
301 | SPLPAR_CHARACTERISTICS_TOKEN, | |
34422fed WS |
302 | __pa(rtas_data_buf), |
303 | RTAS_DATA_BUF_SIZE); | |
1da177e4 LT |
304 | memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); |
305 | spin_unlock(&rtas_data_buf_lock); | |
306 | ||
307 | if (call_status != 0) { | |
308 | printk(KERN_INFO | |
309 | "%s %s Error calling get-system-parameter (0x%x)\n", | |
e48b1b45 | 310 | __FILE__, __func__, call_status); |
1da177e4 LT |
311 | } else { |
312 | int splpar_strlen; | |
313 | int idx, w_idx; | |
dd00cc48 | 314 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 315 | if (!workbuffer) { |
8354be9c | 316 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 317 | __FILE__, __func__, __LINE__); |
d3d2176a | 318 | kfree(local_buffer); |
1da177e4 LT |
319 | return; |
320 | } | |
321 | #ifdef LPARCFG_DEBUG | |
8354be9c | 322 | printk(KERN_INFO "success calling get-system-parameter\n"); |
1da177e4 | 323 | #endif |
34422fed | 324 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
1da177e4 LT |
325 | local_buffer += 2; /* step over strlen value */ |
326 | ||
1da177e4 LT |
327 | w_idx = 0; |
328 | idx = 0; | |
329 | while ((*local_buffer) && (idx < splpar_strlen)) { | |
330 | workbuffer[w_idx++] = local_buffer[idx++]; | |
331 | if ((local_buffer[idx] == ',') | |
332 | || (local_buffer[idx] == '\0')) { | |
333 | workbuffer[w_idx] = '\0'; | |
334 | if (w_idx) { | |
335 | /* avoid the empty string */ | |
336 | seq_printf(m, "%s\n", workbuffer); | |
337 | } | |
338 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); | |
339 | idx++; /* skip the comma */ | |
340 | w_idx = 0; | |
341 | } else if (local_buffer[idx] == '=') { | |
342 | /* code here to replace workbuffer contents | |
343 | with different keyword strings */ | |
344 | if (0 == strcmp(workbuffer, "MaxEntCap")) { | |
345 | strcpy(workbuffer, | |
346 | "partition_max_entitled_capacity"); | |
347 | w_idx = strlen(workbuffer); | |
348 | } | |
349 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { | |
350 | strcpy(workbuffer, | |
351 | "system_potential_processors"); | |
352 | w_idx = strlen(workbuffer); | |
353 | } | |
354 | } | |
355 | } | |
356 | kfree(workbuffer); | |
357 | local_buffer -= 2; /* back up over strlen value */ | |
358 | } | |
359 | kfree(local_buffer); | |
360 | } | |
361 | ||
1da177e4 LT |
362 | /* Return the number of processors in the system. |
363 | * This function reads through the device tree and counts | |
364 | * the virtual processors, this does not include threads. | |
365 | */ | |
366 | static int lparcfg_count_active_processors(void) | |
367 | { | |
368 | struct device_node *cpus_dn = NULL; | |
369 | int count = 0; | |
370 | ||
371 | while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) { | |
372 | #ifdef LPARCFG_DEBUG | |
8354be9c | 373 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
1da177e4 LT |
374 | #endif |
375 | count++; | |
376 | } | |
377 | return count; | |
378 | } | |
379 | ||
ffa5abbd BK |
380 | static void pseries_cmo_data(struct seq_file *m) |
381 | { | |
382 | int cpu; | |
383 | unsigned long cmo_faults = 0; | |
384 | unsigned long cmo_fault_time = 0; | |
385 | ||
ac22429d RJ |
386 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
387 | ||
ffa5abbd BK |
388 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
389 | return; | |
390 | ||
391 | for_each_possible_cpu(cpu) { | |
8154c5d2 PM |
392 | cmo_faults += lppaca_of(cpu).cmo_faults; |
393 | cmo_fault_time += lppaca_of(cpu).cmo_fault_time; | |
ffa5abbd BK |
394 | } |
395 | ||
396 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); | |
397 | seq_printf(m, "cmo_fault_time_usec=%lu\n", | |
398 | cmo_fault_time / tb_ticks_per_usec); | |
ac22429d RJ |
399 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
400 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); | |
401 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); | |
ffa5abbd BK |
402 | } |
403 | ||
0559f0a7 AB |
404 | static void splpar_dispatch_data(struct seq_file *m) |
405 | { | |
406 | int cpu; | |
407 | unsigned long dispatches = 0; | |
408 | unsigned long dispatch_dispersions = 0; | |
409 | ||
410 | for_each_possible_cpu(cpu) { | |
8154c5d2 PM |
411 | dispatches += lppaca_of(cpu).yield_count; |
412 | dispatch_dispersions += lppaca_of(cpu).dispersion_count; | |
0559f0a7 AB |
413 | } |
414 | ||
415 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
416 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
417 | } | |
418 | ||
6fe9d1fa VS |
419 | static void parse_em_data(struct seq_file *m) |
420 | { | |
421 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
422 | ||
423 | if (plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS) | |
424 | seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]); | |
425 | } | |
426 | ||
16e9f994 | 427 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
428 | { |
429 | int partition_potential_processors; | |
430 | int partition_active_processors; | |
1da177e4 | 431 | struct device_node *rtas_node; |
a7f67bdf | 432 | const int *lrdrp = NULL; |
1da177e4 | 433 | |
8c8dc322 | 434 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 435 | if (rtas_node) |
e2eb6392 | 436 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
437 | |
438 | if (lrdrp == NULL) { | |
271c3f35 | 439 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 LT |
440 | } else { |
441 | partition_potential_processors = *(lrdrp + 4); | |
442 | } | |
8c8dc322 | 443 | of_node_put(rtas_node); |
1da177e4 LT |
444 | |
445 | partition_active_processors = lparcfg_count_active_processors(); | |
446 | ||
1ababe11 | 447 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 LT |
448 | /* this call handles the ibm,get-system-parameter contents */ |
449 | parse_system_parameter_string(m); | |
11529396 | 450 | parse_ppp_data(m); |
dfc3403f | 451 | parse_mpp_data(m); |
9ee820fa | 452 | parse_mpp_x_data(m); |
ffa5abbd | 453 | pseries_cmo_data(m); |
0559f0a7 | 454 | splpar_dispatch_data(m); |
1da177e4 | 455 | |
11529396 | 456 | seq_printf(m, "purr=%ld\n", get_purr()); |
1da177e4 LT |
457 | } else { /* non SPLPAR case */ |
458 | ||
459 | seq_printf(m, "system_active_processors=%d\n", | |
460 | partition_potential_processors); | |
461 | ||
462 | seq_printf(m, "system_potential_processors=%d\n", | |
463 | partition_potential_processors); | |
464 | ||
465 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
466 | partition_potential_processors * 100); | |
467 | ||
468 | seq_printf(m, "partition_entitled_capacity=%d\n", | |
469 | partition_active_processors * 100); | |
470 | } | |
471 | ||
472 | seq_printf(m, "partition_active_processors=%d\n", | |
473 | partition_active_processors); | |
474 | ||
475 | seq_printf(m, "partition_potential_processors=%d\n", | |
476 | partition_potential_processors); | |
477 | ||
8154c5d2 | 478 | seq_printf(m, "shared_processor_mode=%d\n", lppaca_of(0).shared_proc); |
1da177e4 | 479 | |
46db2f86 BK |
480 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
481 | ||
6fe9d1fa VS |
482 | parse_em_data(m); |
483 | ||
1da177e4 LT |
484 | return 0; |
485 | } | |
486 | ||
11529396 NF |
487 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
488 | { | |
398778f7 RJ |
489 | struct hvcall_ppp_data ppp_data; |
490 | u8 new_weight; | |
11529396 NF |
491 | u64 new_entitled; |
492 | ssize_t retval; | |
493 | ||
494 | /* Get our current parameters */ | |
398778f7 | 495 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
496 | if (retval) |
497 | return retval; | |
498 | ||
11529396 | 499 | if (entitlement) { |
398778f7 | 500 | new_weight = ppp_data.weight; |
11529396 NF |
501 | new_entitled = *entitlement; |
502 | } else if (weight) { | |
503 | new_weight = *weight; | |
398778f7 | 504 | new_entitled = ppp_data.entitlement; |
11529396 NF |
505 | } else |
506 | return -EINVAL; | |
507 | ||
fe333321 | 508 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 509 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 510 | |
fe333321 | 511 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 512 | __func__, new_entitled, new_weight); |
11529396 NF |
513 | |
514 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
515 | return retval; | |
516 | } | |
517 | ||
dfc3403f NF |
518 | /** |
519 | * update_mpp | |
520 | * | |
521 | * Update the memory entitlement and weight for the partition. Caller must | |
522 | * specify either a new entitlement or weight, not both, to be updated | |
523 | * since the h_set_mpp call takes both entitlement and weight as parameters. | |
524 | */ | |
525 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) | |
526 | { | |
527 | struct hvcall_mpp_data mpp_data; | |
528 | u64 new_entitled; | |
529 | u8 new_weight; | |
530 | ssize_t rc; | |
531 | ||
22e1a4dd NF |
532 | if (entitlement) { |
533 | /* Check with vio to ensure the new memory entitlement | |
534 | * can be handled. | |
535 | */ | |
536 | rc = vio_cmo_entitlement_update(*entitlement); | |
537 | if (rc) | |
538 | return rc; | |
539 | } | |
540 | ||
dfc3403f NF |
541 | rc = h_get_mpp(&mpp_data); |
542 | if (rc) | |
543 | return rc; | |
544 | ||
545 | if (entitlement) { | |
546 | new_weight = mpp_data.mem_weight; | |
547 | new_entitled = *entitlement; | |
548 | } else if (weight) { | |
549 | new_weight = *weight; | |
550 | new_entitled = mpp_data.entitled_mem; | |
551 | } else | |
552 | return -EINVAL; | |
553 | ||
554 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", | |
5df72bf3 | 555 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 556 | |
fe333321 | 557 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 558 | __func__, new_entitled, new_weight); |
dfc3403f NF |
559 | |
560 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
561 | return rc; | |
562 | } | |
563 | ||
1da177e4 LT |
564 | /* |
565 | * Interface for changing system parameters (variable capacity weight | |
566 | * and entitled capacity). Format of input is "param_name=value"; | |
567 | * anything after value is ignored. Valid parameters at this time are | |
568 | * "partition_entitled_capacity" and "capacity_weight". We use | |
569 | * H_SET_PPP to alter parameters. | |
570 | * | |
571 | * This function should be invoked only on systems with | |
572 | * FW_FEATURE_SPLPAR. | |
573 | */ | |
574 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
575 | size_t count, loff_t * off) | |
576 | { | |
16c14b46 NF |
577 | int kbuf_sz = 64; |
578 | char kbuf[kbuf_sz]; | |
1da177e4 LT |
579 | char *tmp; |
580 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
581 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 582 | ssize_t retval; |
1da177e4 | 583 | |
f5339277 | 584 | if (!firmware_has_feature(FW_FEATURE_SPLPAR)) |
0524aad7 SR |
585 | return -EINVAL; |
586 | ||
16c14b46 NF |
587 | if (count > kbuf_sz) |
588 | return -EINVAL; | |
1da177e4 | 589 | |
1da177e4 | 590 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 591 | return -EFAULT; |
1da177e4 | 592 | |
1da177e4 LT |
593 | kbuf[count - 1] = '\0'; |
594 | tmp = strchr(kbuf, '='); | |
595 | if (!tmp) | |
16c14b46 | 596 | return -EINVAL; |
1da177e4 LT |
597 | |
598 | *tmp++ = '\0'; | |
599 | ||
600 | if (!strcmp(kbuf, "partition_entitled_capacity")) { | |
601 | char *endp; | |
602 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
603 | if (endp == tmp) | |
16c14b46 | 604 | return -EINVAL; |
11529396 NF |
605 | |
606 | retval = update_ppp(new_entitled_ptr, NULL); | |
1da177e4 LT |
607 | } else if (!strcmp(kbuf, "capacity_weight")) { |
608 | char *endp; | |
609 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
610 | if (endp == tmp) | |
16c14b46 | 611 | return -EINVAL; |
1da177e4 | 612 | |
11529396 | 613 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
614 | } else if (!strcmp(kbuf, "entitled_memory")) { |
615 | char *endp; | |
616 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
617 | if (endp == tmp) | |
16c14b46 | 618 | return -EINVAL; |
dfc3403f NF |
619 | |
620 | retval = update_mpp(new_entitled_ptr, NULL); | |
621 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { | |
622 | char *endp; | |
623 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
624 | if (endp == tmp) | |
16c14b46 | 625 | return -EINVAL; |
dfc3403f NF |
626 | |
627 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 628 | } else |
16c14b46 | 629 | return -EINVAL; |
1da177e4 | 630 | |
706c8c93 | 631 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 632 | retval = count; |
706c8c93 | 633 | } else if (retval == H_BUSY) { |
1da177e4 | 634 | retval = -EBUSY; |
706c8c93 | 635 | } else if (retval == H_HARDWARE) { |
1da177e4 | 636 | retval = -EIO; |
706c8c93 | 637 | } else if (retval == H_PARAMETER) { |
1da177e4 | 638 | retval = -EINVAL; |
1da177e4 LT |
639 | } |
640 | ||
1da177e4 LT |
641 | return retval; |
642 | } | |
643 | ||
16e9f994 SR |
644 | static int lparcfg_data(struct seq_file *m, void *v) |
645 | { | |
646 | struct device_node *rootdn; | |
647 | const char *model = ""; | |
648 | const char *system_id = ""; | |
649 | const char *tmp; | |
a7f67bdf JK |
650 | const unsigned int *lp_index_ptr; |
651 | unsigned int lp_index = 0; | |
16e9f994 | 652 | |
8354be9c | 653 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
16e9f994 | 654 | |
8c8dc322 | 655 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 656 | if (rootdn) { |
e2eb6392 | 657 | tmp = of_get_property(rootdn, "model", NULL); |
f5339277 | 658 | if (tmp) |
16e9f994 | 659 | model = tmp; |
e2eb6392 | 660 | tmp = of_get_property(rootdn, "system-id", NULL); |
f5339277 | 661 | if (tmp) |
16e9f994 | 662 | system_id = tmp; |
e2eb6392 SR |
663 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
664 | NULL); | |
16e9f994 SR |
665 | if (lp_index_ptr) |
666 | lp_index = *lp_index_ptr; | |
8c8dc322 | 667 | of_node_put(rootdn); |
16e9f994 SR |
668 | } |
669 | seq_printf(m, "serial_number=%s\n", system_id); | |
670 | seq_printf(m, "system_type=%s\n", model); | |
671 | seq_printf(m, "partition_id=%d\n", (int)lp_index); | |
672 | ||
16e9f994 SR |
673 | return pseries_lparcfg_data(m, v); |
674 | } | |
675 | ||
1da177e4 LT |
676 | static int lparcfg_open(struct inode *inode, struct file *file) |
677 | { | |
678 | return single_open(file, lparcfg_data, NULL); | |
679 | } | |
680 | ||
1c21a293 | 681 | static const struct file_operations lparcfg_fops = { |
8acb888c AB |
682 | .owner = THIS_MODULE, |
683 | .read = seq_read, | |
0524aad7 | 684 | .write = lparcfg_write, |
8acb888c AB |
685 | .open = lparcfg_open, |
686 | .release = single_release, | |
6038f373 | 687 | .llseek = seq_lseek, |
1da177e4 LT |
688 | }; |
689 | ||
1c21a293 | 690 | static int __init lparcfg_init(void) |
1da177e4 LT |
691 | { |
692 | struct proc_dir_entry *ent; | |
d161a13f | 693 | umode_t mode = S_IRUSR | S_IRGRP | S_IROTH; |
1da177e4 LT |
694 | |
695 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
f5339277 | 696 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) |
1da177e4 | 697 | mode |= S_IWUSR; |
1da177e4 | 698 | |
188917e1 | 699 | ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops); |
66747138 | 700 | if (!ent) { |
188917e1 | 701 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
1da177e4 LT |
702 | return -EIO; |
703 | } | |
704 | ||
705 | proc_ppc64_lparcfg = ent; | |
706 | return 0; | |
707 | } | |
708 | ||
1c21a293 | 709 | static void __exit lparcfg_cleanup(void) |
1da177e4 | 710 | { |
0d9dc4b4 | 711 | if (proc_ppc64_lparcfg) |
1da177e4 | 712 | remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent); |
1da177e4 LT |
713 | } |
714 | ||
715 | module_init(lparcfg_init); | |
716 | module_exit(lparcfg_cleanup); | |
717 | MODULE_DESCRIPTION("Interface for LPAR configuration data"); | |
718 | MODULE_AUTHOR("Dave Engebretsen"); | |
719 | MODULE_LICENSE("GPL"); |