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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * PowerPC64 LPAR Configuration Information Driver | |
4 | * | |
5 | * Dave Engebretsen engebret@us.ibm.com | |
6 | * Copyright (c) 2003 Dave Engebretsen | |
7 | * Will Schmidt willschm@us.ibm.com | |
8 | * SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation. | |
9 | * seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation. | |
10 | * Nathan Lynch nathanl@austin.ibm.com | |
11 | * Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation. | |
12 | * | |
1da177e4 LT |
13 | * This driver creates a proc file at /proc/ppc64/lparcfg which contains |
14 | * keyword - value pairs that specify the configuration of the partition. | |
15 | */ | |
16 | ||
1da177e4 LT |
17 | #include <linux/module.h> |
18 | #include <linux/types.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/proc_fs.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/seq_file.h> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
7c0f6ba6 | 24 | #include <linux/uaccess.h> |
772b039f | 25 | #include <linux/hugetlb.h> |
1da177e4 | 26 | #include <asm/lppaca.h> |
1da177e4 | 27 | #include <asm/hvcall.h> |
1ababe11 | 28 | #include <asm/firmware.h> |
1da177e4 | 29 | #include <asm/rtas.h> |
1da177e4 | 30 | #include <asm/time.h> |
856509d5 | 31 | #include <asm/prom.h> |
271c3f35 | 32 | #include <asm/vdso_datapage.h> |
22e1a4dd | 33 | #include <asm/vio.h> |
46db2f86 | 34 | #include <asm/mmu.h> |
f5f6cbb6 | 35 | #include <asm/machdep.h> |
772b039f | 36 | #include <asm/drmem.h> |
1da177e4 | 37 | |
8f272a5d | 38 | #include "pseries.h" |
f5f6cbb6 BH |
39 | |
40 | /* | |
41 | * This isn't a module but we expose that to userspace | |
42 | * via /proc so leave the definitions here | |
43 | */ | |
6fe9d1fa | 44 | #define MODULE_VERS "1.9" |
1da177e4 LT |
45 | #define MODULE_NAME "lparcfg" |
46 | ||
47 | /* #define LPARCFG_DEBUG */ | |
48 | ||
1da177e4 | 49 | /* |
16e9f994 SR |
50 | * Track sum of all purrs across all processors. This is used to further |
51 | * calculate usage values by different applications | |
1da177e4 | 52 | */ |
3d3a6021 NP |
53 | static void cpu_get_purr(void *arg) |
54 | { | |
55 | atomic64_t *sum = arg; | |
56 | ||
57 | atomic64_add(mfspr(SPRN_PURR), sum); | |
58 | } | |
59 | ||
1da177e4 LT |
60 | static unsigned long get_purr(void) |
61 | { | |
3d3a6021 | 62 | atomic64_t purr = ATOMIC64_INIT(0); |
1da177e4 | 63 | |
3d3a6021 | 64 | on_each_cpu(cpu_get_purr, &purr, 1); |
1da177e4 | 65 | |
3d3a6021 | 66 | return atomic64_read(&purr); |
1da177e4 LT |
67 | } |
68 | ||
d3d2176a | 69 | /* |
1da177e4 LT |
70 | * Methods used to fetch LPAR data when running on a pSeries platform. |
71 | */ | |
dfc3403f | 72 | |
398778f7 RJ |
73 | struct hvcall_ppp_data { |
74 | u64 entitlement; | |
75 | u64 unallocated_entitlement; | |
76 | u16 group_num; | |
77 | u16 pool_num; | |
78 | u8 capped; | |
79 | u8 weight; | |
80 | u8 unallocated_weight; | |
81 | u16 active_procs_in_pool; | |
82 | u16 active_system_procs; | |
f03cdb3a NF |
83 | u16 phys_platform_procs; |
84 | u32 max_proc_cap_avail; | |
85 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
86 | }; |
87 | ||
1da177e4 LT |
88 | /* |
89 | * H_GET_PPP hcall returns info in 4 parms. | |
90 | * entitled_capacity,unallocated_capacity, | |
91 | * aggregation, resource_capability). | |
92 | * | |
d3d2176a | 93 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
94 | * R5 = Unallocated Processor Capacity Percentage. |
95 | * R6 (AABBCCDDEEFFGGHH). | |
96 | * XXXX - reserved (0) | |
97 | * XXXX - reserved (0) | |
98 | * XXXX - Group Number | |
99 | * XXXX - Pool Number. | |
100 | * R7 (IIJJKKLLMMNNOOPP). | |
101 | * XX - reserved. (0) | |
102 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. | |
103 | * XX - variable processor Capacity Weight | |
104 | * XX - Unallocated Variable Processor Capacity Weight. | |
105 | * XXXX - Active processors in Physical Processor Pool. | |
d3d2176a | 106 | * XXXX - Processors active on platform. |
f03cdb3a NF |
107 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
108 | * XXXX - Physical platform procs allocated to virtualization. | |
109 | * XXXXXX - Max procs capacity % available to the partitions pool. | |
110 | * XXXXXX - Entitled procs capacity % available to the | |
111 | * partitions pool. | |
1da177e4 | 112 | */ |
398778f7 | 113 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 LT |
114 | { |
115 | unsigned long rc; | |
f03cdb3a | 116 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
b9377ffc | 117 | |
f03cdb3a | 118 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 119 | |
398778f7 RJ |
120 | ppp_data->entitlement = retbuf[0]; |
121 | ppp_data->unallocated_entitlement = retbuf[1]; | |
122 | ||
123 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
124 | ppp_data->pool_num = retbuf[2] & 0xffff; | |
125 | ||
126 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; | |
127 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; | |
128 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; | |
129 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; | |
130 | ppp_data->active_system_procs = retbuf[3] & 0xffff; | |
1da177e4 | 131 | |
f03cdb3a NF |
132 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
133 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; | |
134 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; | |
135 | ||
1da177e4 LT |
136 | return rc; |
137 | } | |
138 | ||
11529396 NF |
139 | static unsigned h_pic(unsigned long *pool_idle_time, |
140 | unsigned long *num_procs) | |
1da177e4 LT |
141 | { |
142 | unsigned long rc; | |
b9377ffc AB |
143 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
144 | ||
145 | rc = plpar_hcall(H_PIC, retbuf); | |
146 | ||
147 | *pool_idle_time = retbuf[0]; | |
148 | *num_procs = retbuf[1]; | |
11529396 NF |
149 | |
150 | return rc; | |
151 | } | |
152 | ||
153 | /* | |
154 | * parse_ppp_data | |
155 | * Parse out the data returned from h_get_ppp and h_pic | |
156 | */ | |
157 | static void parse_ppp_data(struct seq_file *m) | |
158 | { | |
398778f7 | 159 | struct hvcall_ppp_data ppp_data; |
f03cdb3a | 160 | struct device_node *root; |
ca5de4e6 | 161 | const __be32 *perf_level; |
11529396 NF |
162 | int rc; |
163 | ||
398778f7 | 164 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
165 | if (rc) |
166 | return; | |
167 | ||
fe333321 | 168 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
169 | ppp_data.entitlement); |
170 | seq_printf(m, "group=%d\n", ppp_data.group_num); | |
171 | seq_printf(m, "system_active_processors=%d\n", | |
172 | ppp_data.active_system_procs); | |
11529396 | 173 | |
25985edc | 174 | /* pool related entries are appropriate for shared configs */ |
f13c13a0 | 175 | if (lppaca_shared_proc(get_lppaca())) { |
11529396 NF |
176 | unsigned long pool_idle_time, pool_procs; |
177 | ||
398778f7 | 178 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
179 | |
180 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
181 | seq_printf(m, "pool_capacity=%d\n", |
182 | ppp_data.active_procs_in_pool * 100); | |
11529396 NF |
183 | |
184 | h_pic(&pool_idle_time, &pool_procs); | |
185 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); | |
186 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); | |
187 | } | |
188 | ||
398778f7 RJ |
189 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
190 | ppp_data.unallocated_weight); | |
191 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); | |
192 | seq_printf(m, "capped=%d\n", ppp_data.capped); | |
fe333321 | 193 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 194 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
195 | |
196 | /* The last bits of information returned from h_get_ppp are only | |
197 | * valid if the ibm,partition-performance-parameters-level | |
198 | * property is >= 1. | |
199 | */ | |
200 | root = of_find_node_by_path("/"); | |
201 | if (root) { | |
202 | perf_level = of_get_property(root, | |
203 | "ibm,partition-performance-parameters-level", | |
204 | NULL); | |
ca5de4e6 | 205 | if (perf_level && (be32_to_cpup(perf_level) >= 1)) { |
f03cdb3a NF |
206 | seq_printf(m, |
207 | "physical_procs_allocated_to_virtualization=%d\n", | |
208 | ppp_data.phys_platform_procs); | |
209 | seq_printf(m, "max_proc_capacity_available=%d\n", | |
210 | ppp_data.max_proc_cap_avail); | |
211 | seq_printf(m, "entitled_proc_capacity_available=%d\n", | |
212 | ppp_data.entitled_proc_cap_avail); | |
213 | } | |
214 | ||
215 | of_node_put(root); | |
216 | } | |
1da177e4 LT |
217 | } |
218 | ||
dfc3403f NF |
219 | /** |
220 | * parse_mpp_data | |
221 | * Parse out data returned from h_get_mpp | |
222 | */ | |
223 | static void parse_mpp_data(struct seq_file *m) | |
224 | { | |
225 | struct hvcall_mpp_data mpp_data; | |
226 | int rc; | |
227 | ||
228 | rc = h_get_mpp(&mpp_data); | |
229 | if (rc) | |
230 | return; | |
231 | ||
232 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); | |
233 | ||
234 | if (mpp_data.mapped_mem != -1) | |
235 | seq_printf(m, "mapped_entitled_memory=%ld\n", | |
236 | mpp_data.mapped_mem); | |
237 | ||
238 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); | |
239 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); | |
240 | ||
241 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); | |
242 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", | |
243 | mpp_data.unallocated_mem_weight); | |
244 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", | |
245 | mpp_data.unallocated_entitlement); | |
246 | ||
247 | if (mpp_data.pool_size != -1) | |
248 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", | |
249 | mpp_data.pool_size); | |
250 | ||
251 | seq_printf(m, "entitled_memory_loan_request=%ld\n", | |
252 | mpp_data.loan_request); | |
253 | ||
254 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); | |
255 | } | |
256 | ||
9ee820fa BK |
257 | /** |
258 | * parse_mpp_x_data | |
259 | * Parse out data returned from h_get_mpp_x | |
260 | */ | |
261 | static void parse_mpp_x_data(struct seq_file *m) | |
262 | { | |
263 | struct hvcall_mpp_x_data mpp_x_data; | |
264 | ||
265 | if (!firmware_has_feature(FW_FEATURE_XCMO)) | |
266 | return; | |
267 | if (h_get_mpp_x(&mpp_x_data)) | |
268 | return; | |
269 | ||
270 | seq_printf(m, "coalesced_bytes=%ld\n", mpp_x_data.coalesced_bytes); | |
271 | ||
272 | if (mpp_x_data.pool_coalesced_bytes) | |
273 | seq_printf(m, "pool_coalesced_bytes=%ld\n", | |
274 | mpp_x_data.pool_coalesced_bytes); | |
275 | if (mpp_x_data.pool_purr_cycles) | |
276 | seq_printf(m, "coalesce_pool_purr=%ld\n", mpp_x_data.pool_purr_cycles); | |
277 | if (mpp_x_data.pool_spurr_cycles) | |
278 | seq_printf(m, "coalesce_pool_spurr=%ld\n", mpp_x_data.pool_spurr_cycles); | |
279 | } | |
280 | ||
1da177e4 LT |
281 | #define SPLPAR_CHARACTERISTICS_TOKEN 20 |
282 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) | |
283 | ||
284 | /* | |
285 | * parse_system_parameter_string() | |
286 | * Retrieve the potential_processors, max_entitled_capacity and friends | |
287 | * through the get-system-parameter rtas call. Replace keyword strings as | |
288 | * necessary. | |
289 | */ | |
290 | static void parse_system_parameter_string(struct seq_file *m) | |
291 | { | |
292 | int call_status; | |
293 | ||
34422fed | 294 | unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 295 | if (!local_buffer) { |
8354be9c | 296 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 297 | __FILE__, __func__, __LINE__); |
1da177e4 LT |
298 | return; |
299 | } | |
300 | ||
301 | spin_lock(&rtas_data_buf_lock); | |
302 | memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH); | |
303 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, | |
304 | NULL, | |
305 | SPLPAR_CHARACTERISTICS_TOKEN, | |
34422fed WS |
306 | __pa(rtas_data_buf), |
307 | RTAS_DATA_BUF_SIZE); | |
1da177e4 | 308 | memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH); |
5676005a | 309 | local_buffer[SPLPAR_MAXLENGTH - 1] = '\0'; |
1da177e4 LT |
310 | spin_unlock(&rtas_data_buf_lock); |
311 | ||
312 | if (call_status != 0) { | |
313 | printk(KERN_INFO | |
314 | "%s %s Error calling get-system-parameter (0x%x)\n", | |
e48b1b45 | 315 | __FILE__, __func__, call_status); |
1da177e4 LT |
316 | } else { |
317 | int splpar_strlen; | |
318 | int idx, w_idx; | |
dd00cc48 | 319 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
1da177e4 | 320 | if (!workbuffer) { |
8354be9c | 321 | printk(KERN_ERR "%s %s kmalloc failure at line %d\n", |
e48b1b45 | 322 | __FILE__, __func__, __LINE__); |
d3d2176a | 323 | kfree(local_buffer); |
1da177e4 LT |
324 | return; |
325 | } | |
326 | #ifdef LPARCFG_DEBUG | |
8354be9c | 327 | printk(KERN_INFO "success calling get-system-parameter\n"); |
1da177e4 | 328 | #endif |
34422fed | 329 | splpar_strlen = local_buffer[0] * 256 + local_buffer[1]; |
1da177e4 LT |
330 | local_buffer += 2; /* step over strlen value */ |
331 | ||
1da177e4 LT |
332 | w_idx = 0; |
333 | idx = 0; | |
334 | while ((*local_buffer) && (idx < splpar_strlen)) { | |
335 | workbuffer[w_idx++] = local_buffer[idx++]; | |
336 | if ((local_buffer[idx] == ',') | |
337 | || (local_buffer[idx] == '\0')) { | |
338 | workbuffer[w_idx] = '\0'; | |
339 | if (w_idx) { | |
340 | /* avoid the empty string */ | |
341 | seq_printf(m, "%s\n", workbuffer); | |
342 | } | |
343 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); | |
344 | idx++; /* skip the comma */ | |
345 | w_idx = 0; | |
346 | } else if (local_buffer[idx] == '=') { | |
347 | /* code here to replace workbuffer contents | |
348 | with different keyword strings */ | |
349 | if (0 == strcmp(workbuffer, "MaxEntCap")) { | |
350 | strcpy(workbuffer, | |
351 | "partition_max_entitled_capacity"); | |
352 | w_idx = strlen(workbuffer); | |
353 | } | |
354 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { | |
355 | strcpy(workbuffer, | |
356 | "system_potential_processors"); | |
357 | w_idx = strlen(workbuffer); | |
358 | } | |
359 | } | |
360 | } | |
361 | kfree(workbuffer); | |
362 | local_buffer -= 2; /* back up over strlen value */ | |
363 | } | |
364 | kfree(local_buffer); | |
365 | } | |
366 | ||
1da177e4 LT |
367 | /* Return the number of processors in the system. |
368 | * This function reads through the device tree and counts | |
369 | * the virtual processors, this does not include threads. | |
370 | */ | |
371 | static int lparcfg_count_active_processors(void) | |
372 | { | |
9625e69a | 373 | struct device_node *cpus_dn; |
1da177e4 LT |
374 | int count = 0; |
375 | ||
9625e69a | 376 | for_each_node_by_type(cpus_dn, "cpu") { |
1da177e4 | 377 | #ifdef LPARCFG_DEBUG |
8354be9c | 378 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
1da177e4 LT |
379 | #endif |
380 | count++; | |
381 | } | |
382 | return count; | |
383 | } | |
384 | ||
ffa5abbd BK |
385 | static void pseries_cmo_data(struct seq_file *m) |
386 | { | |
387 | int cpu; | |
388 | unsigned long cmo_faults = 0; | |
389 | unsigned long cmo_fault_time = 0; | |
390 | ||
ac22429d RJ |
391 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
392 | ||
ffa5abbd BK |
393 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
394 | return; | |
395 | ||
396 | for_each_possible_cpu(cpu) { | |
7ffcf8ec AB |
397 | cmo_faults += be64_to_cpu(lppaca_of(cpu).cmo_faults); |
398 | cmo_fault_time += be64_to_cpu(lppaca_of(cpu).cmo_fault_time); | |
ffa5abbd BK |
399 | } |
400 | ||
401 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); | |
402 | seq_printf(m, "cmo_fault_time_usec=%lu\n", | |
403 | cmo_fault_time / tb_ticks_per_usec); | |
ac22429d RJ |
404 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
405 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); | |
406 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); | |
ffa5abbd BK |
407 | } |
408 | ||
0559f0a7 AB |
409 | static void splpar_dispatch_data(struct seq_file *m) |
410 | { | |
411 | int cpu; | |
412 | unsigned long dispatches = 0; | |
413 | unsigned long dispatch_dispersions = 0; | |
414 | ||
415 | for_each_possible_cpu(cpu) { | |
7ffcf8ec AB |
416 | dispatches += be32_to_cpu(lppaca_of(cpu).yield_count); |
417 | dispatch_dispersions += | |
418 | be32_to_cpu(lppaca_of(cpu).dispersion_count); | |
0559f0a7 AB |
419 | } |
420 | ||
421 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
422 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
423 | } | |
424 | ||
6fe9d1fa VS |
425 | static void parse_em_data(struct seq_file *m) |
426 | { | |
427 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
428 | ||
f5f6cbb6 BH |
429 | if (firmware_has_feature(FW_FEATURE_LPAR) && |
430 | plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS) | |
6fe9d1fa VS |
431 | seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]); |
432 | } | |
433 | ||
772b039f AP |
434 | static void maxmem_data(struct seq_file *m) |
435 | { | |
436 | unsigned long maxmem = 0; | |
437 | ||
438 | maxmem += drmem_info->n_lmbs * drmem_info->lmb_size; | |
439 | maxmem += hugetlb_total_pages() * PAGE_SIZE; | |
440 | ||
441 | seq_printf(m, "MaxMem=%ld\n", maxmem); | |
442 | } | |
443 | ||
16e9f994 | 444 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
445 | { |
446 | int partition_potential_processors; | |
447 | int partition_active_processors; | |
1da177e4 | 448 | struct device_node *rtas_node; |
ca5de4e6 | 449 | const __be32 *lrdrp = NULL; |
1da177e4 | 450 | |
8c8dc322 | 451 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 452 | if (rtas_node) |
e2eb6392 | 453 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
454 | |
455 | if (lrdrp == NULL) { | |
271c3f35 | 456 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 | 457 | } else { |
ca5de4e6 | 458 | partition_potential_processors = be32_to_cpup(lrdrp + 4); |
1da177e4 | 459 | } |
8c8dc322 | 460 | of_node_put(rtas_node); |
1da177e4 LT |
461 | |
462 | partition_active_processors = lparcfg_count_active_processors(); | |
463 | ||
1ababe11 | 464 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 LT |
465 | /* this call handles the ibm,get-system-parameter contents */ |
466 | parse_system_parameter_string(m); | |
11529396 | 467 | parse_ppp_data(m); |
dfc3403f | 468 | parse_mpp_data(m); |
9ee820fa | 469 | parse_mpp_x_data(m); |
ffa5abbd | 470 | pseries_cmo_data(m); |
0559f0a7 | 471 | splpar_dispatch_data(m); |
1da177e4 | 472 | |
11529396 | 473 | seq_printf(m, "purr=%ld\n", get_purr()); |
9f3ba362 | 474 | seq_printf(m, "tbr=%ld\n", mftb()); |
1da177e4 LT |
475 | } else { /* non SPLPAR case */ |
476 | ||
477 | seq_printf(m, "system_active_processors=%d\n", | |
478 | partition_potential_processors); | |
479 | ||
480 | seq_printf(m, "system_potential_processors=%d\n", | |
481 | partition_potential_processors); | |
482 | ||
483 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
484 | partition_potential_processors * 100); | |
485 | ||
486 | seq_printf(m, "partition_entitled_capacity=%d\n", | |
487 | partition_active_processors * 100); | |
488 | } | |
489 | ||
490 | seq_printf(m, "partition_active_processors=%d\n", | |
491 | partition_active_processors); | |
492 | ||
493 | seq_printf(m, "partition_potential_processors=%d\n", | |
494 | partition_potential_processors); | |
495 | ||
f13c13a0 AB |
496 | seq_printf(m, "shared_processor_mode=%d\n", |
497 | lppaca_shared_proc(get_lppaca())); | |
1da177e4 | 498 | |
4e003747 | 499 | #ifdef CONFIG_PPC_BOOK3S_64 |
46db2f86 | 500 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); |
d8c476ee | 501 | #endif |
6fe9d1fa | 502 | parse_em_data(m); |
772b039f | 503 | maxmem_data(m); |
6fe9d1fa | 504 | |
1da177e4 LT |
505 | return 0; |
506 | } | |
507 | ||
11529396 NF |
508 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
509 | { | |
398778f7 RJ |
510 | struct hvcall_ppp_data ppp_data; |
511 | u8 new_weight; | |
11529396 NF |
512 | u64 new_entitled; |
513 | ssize_t retval; | |
514 | ||
515 | /* Get our current parameters */ | |
398778f7 | 516 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
517 | if (retval) |
518 | return retval; | |
519 | ||
11529396 | 520 | if (entitlement) { |
398778f7 | 521 | new_weight = ppp_data.weight; |
11529396 NF |
522 | new_entitled = *entitlement; |
523 | } else if (weight) { | |
524 | new_weight = *weight; | |
398778f7 | 525 | new_entitled = ppp_data.entitlement; |
11529396 NF |
526 | } else |
527 | return -EINVAL; | |
528 | ||
fe333321 | 529 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 530 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 531 | |
fe333321 | 532 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 533 | __func__, new_entitled, new_weight); |
11529396 NF |
534 | |
535 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
536 | return retval; | |
537 | } | |
538 | ||
dfc3403f NF |
539 | /** |
540 | * update_mpp | |
541 | * | |
542 | * Update the memory entitlement and weight for the partition. Caller must | |
543 | * specify either a new entitlement or weight, not both, to be updated | |
544 | * since the h_set_mpp call takes both entitlement and weight as parameters. | |
545 | */ | |
546 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) | |
547 | { | |
548 | struct hvcall_mpp_data mpp_data; | |
549 | u64 new_entitled; | |
550 | u8 new_weight; | |
551 | ssize_t rc; | |
552 | ||
22e1a4dd NF |
553 | if (entitlement) { |
554 | /* Check with vio to ensure the new memory entitlement | |
555 | * can be handled. | |
556 | */ | |
557 | rc = vio_cmo_entitlement_update(*entitlement); | |
558 | if (rc) | |
559 | return rc; | |
560 | } | |
561 | ||
dfc3403f NF |
562 | rc = h_get_mpp(&mpp_data); |
563 | if (rc) | |
564 | return rc; | |
565 | ||
566 | if (entitlement) { | |
567 | new_weight = mpp_data.mem_weight; | |
568 | new_entitled = *entitlement; | |
569 | } else if (weight) { | |
570 | new_weight = *weight; | |
571 | new_entitled = mpp_data.entitled_mem; | |
572 | } else | |
573 | return -EINVAL; | |
574 | ||
575 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", | |
5df72bf3 | 576 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 577 | |
fe333321 | 578 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 579 | __func__, new_entitled, new_weight); |
dfc3403f NF |
580 | |
581 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
582 | return rc; | |
583 | } | |
584 | ||
1da177e4 LT |
585 | /* |
586 | * Interface for changing system parameters (variable capacity weight | |
587 | * and entitled capacity). Format of input is "param_name=value"; | |
588 | * anything after value is ignored. Valid parameters at this time are | |
589 | * "partition_entitled_capacity" and "capacity_weight". We use | |
590 | * H_SET_PPP to alter parameters. | |
591 | * | |
592 | * This function should be invoked only on systems with | |
593 | * FW_FEATURE_SPLPAR. | |
594 | */ | |
595 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
596 | size_t count, loff_t * off) | |
597 | { | |
74422e2b | 598 | char kbuf[64]; |
1da177e4 LT |
599 | char *tmp; |
600 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
601 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 602 | ssize_t retval; |
1da177e4 | 603 | |
f5339277 | 604 | if (!firmware_has_feature(FW_FEATURE_SPLPAR)) |
0524aad7 SR |
605 | return -EINVAL; |
606 | ||
74422e2b | 607 | if (count > sizeof(kbuf)) |
16c14b46 | 608 | return -EINVAL; |
1da177e4 | 609 | |
1da177e4 | 610 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 611 | return -EFAULT; |
1da177e4 | 612 | |
1da177e4 LT |
613 | kbuf[count - 1] = '\0'; |
614 | tmp = strchr(kbuf, '='); | |
615 | if (!tmp) | |
16c14b46 | 616 | return -EINVAL; |
1da177e4 LT |
617 | |
618 | *tmp++ = '\0'; | |
619 | ||
620 | if (!strcmp(kbuf, "partition_entitled_capacity")) { | |
621 | char *endp; | |
622 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
623 | if (endp == tmp) | |
16c14b46 | 624 | return -EINVAL; |
11529396 NF |
625 | |
626 | retval = update_ppp(new_entitled_ptr, NULL); | |
1da177e4 LT |
627 | } else if (!strcmp(kbuf, "capacity_weight")) { |
628 | char *endp; | |
629 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
630 | if (endp == tmp) | |
16c14b46 | 631 | return -EINVAL; |
1da177e4 | 632 | |
11529396 | 633 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
634 | } else if (!strcmp(kbuf, "entitled_memory")) { |
635 | char *endp; | |
636 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
637 | if (endp == tmp) | |
16c14b46 | 638 | return -EINVAL; |
dfc3403f NF |
639 | |
640 | retval = update_mpp(new_entitled_ptr, NULL); | |
641 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { | |
642 | char *endp; | |
643 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
644 | if (endp == tmp) | |
16c14b46 | 645 | return -EINVAL; |
dfc3403f NF |
646 | |
647 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 648 | } else |
16c14b46 | 649 | return -EINVAL; |
1da177e4 | 650 | |
706c8c93 | 651 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 652 | retval = count; |
706c8c93 | 653 | } else if (retval == H_BUSY) { |
1da177e4 | 654 | retval = -EBUSY; |
706c8c93 | 655 | } else if (retval == H_HARDWARE) { |
1da177e4 | 656 | retval = -EIO; |
706c8c93 | 657 | } else if (retval == H_PARAMETER) { |
1da177e4 | 658 | retval = -EINVAL; |
1da177e4 LT |
659 | } |
660 | ||
1da177e4 LT |
661 | return retval; |
662 | } | |
663 | ||
16e9f994 SR |
664 | static int lparcfg_data(struct seq_file *m, void *v) |
665 | { | |
666 | struct device_node *rootdn; | |
667 | const char *model = ""; | |
668 | const char *system_id = ""; | |
669 | const char *tmp; | |
ca5de4e6 | 670 | const __be32 *lp_index_ptr; |
a7f67bdf | 671 | unsigned int lp_index = 0; |
16e9f994 | 672 | |
8354be9c | 673 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
16e9f994 | 674 | |
8c8dc322 | 675 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 676 | if (rootdn) { |
e2eb6392 | 677 | tmp = of_get_property(rootdn, "model", NULL); |
f5339277 | 678 | if (tmp) |
16e9f994 | 679 | model = tmp; |
e2eb6392 | 680 | tmp = of_get_property(rootdn, "system-id", NULL); |
f5339277 | 681 | if (tmp) |
16e9f994 | 682 | system_id = tmp; |
e2eb6392 SR |
683 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
684 | NULL); | |
16e9f994 | 685 | if (lp_index_ptr) |
ca5de4e6 | 686 | lp_index = be32_to_cpup(lp_index_ptr); |
8c8dc322 | 687 | of_node_put(rootdn); |
16e9f994 SR |
688 | } |
689 | seq_printf(m, "serial_number=%s\n", system_id); | |
690 | seq_printf(m, "system_type=%s\n", model); | |
691 | seq_printf(m, "partition_id=%d\n", (int)lp_index); | |
692 | ||
16e9f994 SR |
693 | return pseries_lparcfg_data(m, v); |
694 | } | |
695 | ||
1da177e4 LT |
696 | static int lparcfg_open(struct inode *inode, struct file *file) |
697 | { | |
698 | return single_open(file, lparcfg_data, NULL); | |
699 | } | |
700 | ||
1c21a293 | 701 | static const struct file_operations lparcfg_fops = { |
8acb888c | 702 | .read = seq_read, |
0524aad7 | 703 | .write = lparcfg_write, |
8acb888c AB |
704 | .open = lparcfg_open, |
705 | .release = single_release, | |
6038f373 | 706 | .llseek = seq_lseek, |
1da177e4 LT |
707 | }; |
708 | ||
1c21a293 | 709 | static int __init lparcfg_init(void) |
1da177e4 | 710 | { |
57ad583f | 711 | umode_t mode = 0444; |
1da177e4 LT |
712 | |
713 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
f5339277 | 714 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) |
57ad583f | 715 | mode |= 0200; |
1da177e4 | 716 | |
b177a292 | 717 | if (!proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops)) { |
188917e1 | 718 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
1da177e4 LT |
719 | return -EIO; |
720 | } | |
1da177e4 LT |
721 | return 0; |
722 | } | |
f5f6cbb6 | 723 | machine_device_initcall(pseries, lparcfg_init); |