Commit | Line | Data |
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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> | |
fff9846b | 22 | #include <asm/papr-sysparm.h> |
1da177e4 | 23 | #include <linux/seq_file.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
7c0f6ba6 | 25 | #include <linux/uaccess.h> |
772b039f | 26 | #include <linux/hugetlb.h> |
1da177e4 | 27 | #include <asm/lppaca.h> |
1da177e4 | 28 | #include <asm/hvcall.h> |
1ababe11 | 29 | #include <asm/firmware.h> |
1da177e4 | 30 | #include <asm/rtas.h> |
1da177e4 | 31 | #include <asm/time.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" |
2147783d | 39 | #include "vas.h" /* pseries_vas_dlpar_cpu() */ |
f5f6cbb6 BH |
40 | |
41 | /* | |
42 | * This isn't a module but we expose that to userspace | |
43 | * via /proc so leave the definitions here | |
44 | */ | |
6fe9d1fa | 45 | #define MODULE_VERS "1.9" |
1da177e4 LT |
46 | #define MODULE_NAME "lparcfg" |
47 | ||
48 | /* #define LPARCFG_DEBUG */ | |
49 | ||
1da177e4 | 50 | /* |
16e9f994 SR |
51 | * Track sum of all purrs across all processors. This is used to further |
52 | * calculate usage values by different applications | |
1da177e4 | 53 | */ |
3d3a6021 NP |
54 | static void cpu_get_purr(void *arg) |
55 | { | |
56 | atomic64_t *sum = arg; | |
57 | ||
58 | atomic64_add(mfspr(SPRN_PURR), sum); | |
59 | } | |
60 | ||
1da177e4 LT |
61 | static unsigned long get_purr(void) |
62 | { | |
3d3a6021 | 63 | atomic64_t purr = ATOMIC64_INIT(0); |
1da177e4 | 64 | |
3d3a6021 | 65 | on_each_cpu(cpu_get_purr, &purr, 1); |
1da177e4 | 66 | |
3d3a6021 | 67 | return atomic64_read(&purr); |
1da177e4 LT |
68 | } |
69 | ||
d3d2176a | 70 | /* |
1da177e4 LT |
71 | * Methods used to fetch LPAR data when running on a pSeries platform. |
72 | */ | |
dfc3403f | 73 | |
398778f7 RJ |
74 | struct hvcall_ppp_data { |
75 | u64 entitlement; | |
76 | u64 unallocated_entitlement; | |
77 | u16 group_num; | |
78 | u16 pool_num; | |
79 | u8 capped; | |
80 | u8 weight; | |
81 | u8 unallocated_weight; | |
82 | u16 active_procs_in_pool; | |
83 | u16 active_system_procs; | |
f03cdb3a NF |
84 | u16 phys_platform_procs; |
85 | u32 max_proc_cap_avail; | |
86 | u32 entitled_proc_cap_avail; | |
398778f7 RJ |
87 | }; |
88 | ||
1da177e4 LT |
89 | /* |
90 | * H_GET_PPP hcall returns info in 4 parms. | |
91 | * entitled_capacity,unallocated_capacity, | |
92 | * aggregation, resource_capability). | |
93 | * | |
d3d2176a | 94 | * R4 = Entitled Processor Capacity Percentage. |
1da177e4 LT |
95 | * R5 = Unallocated Processor Capacity Percentage. |
96 | * R6 (AABBCCDDEEFFGGHH). | |
97 | * XXXX - reserved (0) | |
98 | * XXXX - reserved (0) | |
99 | * XXXX - Group Number | |
100 | * XXXX - Pool Number. | |
101 | * R7 (IIJJKKLLMMNNOOPP). | |
102 | * XX - reserved. (0) | |
103 | * XX - bit 0-6 reserved (0). bit 7 is Capped indicator. | |
104 | * XX - variable processor Capacity Weight | |
105 | * XX - Unallocated Variable Processor Capacity Weight. | |
106 | * XXXX - Active processors in Physical Processor Pool. | |
d3d2176a | 107 | * XXXX - Processors active on platform. |
f03cdb3a NF |
108 | * R8 (QQQQRRRRRRSSSSSS). if ibm,partition-performance-parameters-level >= 1 |
109 | * XXXX - Physical platform procs allocated to virtualization. | |
110 | * XXXXXX - Max procs capacity % available to the partitions pool. | |
111 | * XXXXXX - Entitled procs capacity % available to the | |
112 | * partitions pool. | |
1da177e4 | 113 | */ |
398778f7 | 114 | static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) |
1da177e4 | 115 | { |
6d434163 SH |
116 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; |
117 | long rc; | |
b9377ffc | 118 | |
f03cdb3a | 119 | rc = plpar_hcall9(H_GET_PPP, retbuf); |
b9377ffc | 120 | |
398778f7 RJ |
121 | ppp_data->entitlement = retbuf[0]; |
122 | ppp_data->unallocated_entitlement = retbuf[1]; | |
123 | ||
124 | ppp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff; | |
125 | ppp_data->pool_num = retbuf[2] & 0xffff; | |
126 | ||
127 | ppp_data->capped = (retbuf[3] >> 6 * 8) & 0x01; | |
128 | ppp_data->weight = (retbuf[3] >> 5 * 8) & 0xff; | |
129 | ppp_data->unallocated_weight = (retbuf[3] >> 4 * 8) & 0xff; | |
130 | ppp_data->active_procs_in_pool = (retbuf[3] >> 2 * 8) & 0xffff; | |
131 | ppp_data->active_system_procs = retbuf[3] & 0xffff; | |
1da177e4 | 132 | |
f03cdb3a NF |
133 | ppp_data->phys_platform_procs = retbuf[4] >> 6 * 8; |
134 | ppp_data->max_proc_cap_avail = (retbuf[4] >> 3 * 8) & 0xffffff; | |
135 | ppp_data->entitled_proc_cap_avail = retbuf[4] & 0xffffff; | |
136 | ||
1da177e4 LT |
137 | return rc; |
138 | } | |
139 | ||
5d1bc776 SC |
140 | static void show_gpci_data(struct seq_file *m) |
141 | { | |
142 | struct hv_gpci_request_buffer *buf; | |
143 | unsigned int affinity_score; | |
144 | long ret; | |
145 | ||
146 | buf = kmalloc(sizeof(*buf), GFP_KERNEL); | |
147 | if (buf == NULL) | |
148 | return; | |
149 | ||
150 | /* | |
151 | * Show the local LPAR's affinity score. | |
152 | * | |
153 | * 0xB1 selects the Affinity_Domain_Info_By_Partition subcall. | |
154 | * The score is at byte 0xB in the output buffer. | |
155 | */ | |
156 | memset(&buf->params, 0, sizeof(buf->params)); | |
157 | buf->params.counter_request = cpu_to_be32(0xB1); | |
158 | buf->params.starting_index = cpu_to_be32(-1); /* local LPAR */ | |
159 | buf->params.counter_info_version_in = 0x5; /* v5+ for score */ | |
160 | ret = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO, virt_to_phys(buf), | |
161 | sizeof(*buf)); | |
162 | if (ret != H_SUCCESS) { | |
163 | pr_debug("hcall failed: H_GET_PERF_COUNTER_INFO: %ld, %x\n", | |
164 | ret, be32_to_cpu(buf->params.detail_rc)); | |
165 | goto out; | |
166 | } | |
167 | affinity_score = buf->bytes[0xB]; | |
168 | seq_printf(m, "partition_affinity_score=%u\n", affinity_score); | |
169 | out: | |
170 | kfree(buf); | |
171 | } | |
172 | ||
9c74ecfd SH |
173 | static long h_pic(unsigned long *pool_idle_time, |
174 | unsigned long *num_procs) | |
1da177e4 | 175 | { |
9c74ecfd SH |
176 | long rc; |
177 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE] = {0}; | |
b9377ffc AB |
178 | |
179 | rc = plpar_hcall(H_PIC, retbuf); | |
180 | ||
9c74ecfd SH |
181 | if (pool_idle_time) |
182 | *pool_idle_time = retbuf[0]; | |
183 | if (num_procs) | |
184 | *num_procs = retbuf[1]; | |
11529396 NF |
185 | |
186 | return rc; | |
187 | } | |
188 | ||
9c74ecfd SH |
189 | unsigned long boot_pool_idle_time; |
190 | ||
11529396 NF |
191 | /* |
192 | * parse_ppp_data | |
193 | * Parse out the data returned from h_get_ppp and h_pic | |
194 | */ | |
195 | static void parse_ppp_data(struct seq_file *m) | |
196 | { | |
398778f7 | 197 | struct hvcall_ppp_data ppp_data; |
f03cdb3a | 198 | struct device_node *root; |
ca5de4e6 | 199 | const __be32 *perf_level; |
6d434163 | 200 | long rc; |
11529396 | 201 | |
398778f7 | 202 | rc = h_get_ppp(&ppp_data); |
11529396 NF |
203 | if (rc) |
204 | return; | |
205 | ||
fe333321 | 206 | seq_printf(m, "partition_entitled_capacity=%lld\n", |
398778f7 RJ |
207 | ppp_data.entitlement); |
208 | seq_printf(m, "group=%d\n", ppp_data.group_num); | |
209 | seq_printf(m, "system_active_processors=%d\n", | |
210 | ppp_data.active_system_procs); | |
11529396 | 211 | |
25985edc | 212 | /* pool related entries are appropriate for shared configs */ |
eac030b2 | 213 | if (lppaca_shared_proc()) { |
11529396 NF |
214 | unsigned long pool_idle_time, pool_procs; |
215 | ||
398778f7 | 216 | seq_printf(m, "pool=%d\n", ppp_data.pool_num); |
11529396 NF |
217 | |
218 | /* report pool_capacity in percentage */ | |
398778f7 RJ |
219 | seq_printf(m, "pool_capacity=%d\n", |
220 | ppp_data.active_procs_in_pool * 100); | |
11529396 | 221 | |
9c74ecfd SH |
222 | /* In case h_pic call is not successful, this would result in |
223 | * APP values being wrong in tools like lparstat. | |
224 | */ | |
225 | ||
226 | if (h_pic(&pool_idle_time, &pool_procs) == H_SUCCESS) { | |
227 | seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time); | |
228 | seq_printf(m, "pool_num_procs=%ld\n", pool_procs); | |
229 | seq_printf(m, "boot_pool_idle_time=%ld\n", boot_pool_idle_time); | |
230 | } | |
11529396 NF |
231 | } |
232 | ||
398778f7 RJ |
233 | seq_printf(m, "unallocated_capacity_weight=%d\n", |
234 | ppp_data.unallocated_weight); | |
235 | seq_printf(m, "capacity_weight=%d\n", ppp_data.weight); | |
236 | seq_printf(m, "capped=%d\n", ppp_data.capped); | |
fe333321 | 237 | seq_printf(m, "unallocated_capacity=%lld\n", |
398778f7 | 238 | ppp_data.unallocated_entitlement); |
f03cdb3a NF |
239 | |
240 | /* The last bits of information returned from h_get_ppp are only | |
241 | * valid if the ibm,partition-performance-parameters-level | |
242 | * property is >= 1. | |
243 | */ | |
244 | root = of_find_node_by_path("/"); | |
245 | if (root) { | |
246 | perf_level = of_get_property(root, | |
247 | "ibm,partition-performance-parameters-level", | |
248 | NULL); | |
ca5de4e6 | 249 | if (perf_level && (be32_to_cpup(perf_level) >= 1)) { |
f03cdb3a NF |
250 | seq_printf(m, |
251 | "physical_procs_allocated_to_virtualization=%d\n", | |
252 | ppp_data.phys_platform_procs); | |
253 | seq_printf(m, "max_proc_capacity_available=%d\n", | |
254 | ppp_data.max_proc_cap_avail); | |
255 | seq_printf(m, "entitled_proc_capacity_available=%d\n", | |
256 | ppp_data.entitled_proc_cap_avail); | |
257 | } | |
258 | ||
259 | of_node_put(root); | |
260 | } | |
1da177e4 LT |
261 | } |
262 | ||
dfc3403f NF |
263 | /** |
264 | * parse_mpp_data | |
265 | * Parse out data returned from h_get_mpp | |
266 | */ | |
267 | static void parse_mpp_data(struct seq_file *m) | |
268 | { | |
269 | struct hvcall_mpp_data mpp_data; | |
270 | int rc; | |
271 | ||
272 | rc = h_get_mpp(&mpp_data); | |
273 | if (rc) | |
274 | return; | |
275 | ||
276 | seq_printf(m, "entitled_memory=%ld\n", mpp_data.entitled_mem); | |
277 | ||
278 | if (mpp_data.mapped_mem != -1) | |
279 | seq_printf(m, "mapped_entitled_memory=%ld\n", | |
280 | mpp_data.mapped_mem); | |
281 | ||
282 | seq_printf(m, "entitled_memory_group_number=%d\n", mpp_data.group_num); | |
283 | seq_printf(m, "entitled_memory_pool_number=%d\n", mpp_data.pool_num); | |
284 | ||
285 | seq_printf(m, "entitled_memory_weight=%d\n", mpp_data.mem_weight); | |
286 | seq_printf(m, "unallocated_entitled_memory_weight=%d\n", | |
287 | mpp_data.unallocated_mem_weight); | |
288 | seq_printf(m, "unallocated_io_mapping_entitlement=%ld\n", | |
289 | mpp_data.unallocated_entitlement); | |
290 | ||
291 | if (mpp_data.pool_size != -1) | |
292 | seq_printf(m, "entitled_memory_pool_size=%ld bytes\n", | |
293 | mpp_data.pool_size); | |
294 | ||
295 | seq_printf(m, "entitled_memory_loan_request=%ld\n", | |
296 | mpp_data.loan_request); | |
297 | ||
298 | seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem); | |
299 | } | |
300 | ||
9ee820fa BK |
301 | /** |
302 | * parse_mpp_x_data | |
303 | * Parse out data returned from h_get_mpp_x | |
304 | */ | |
305 | static void parse_mpp_x_data(struct seq_file *m) | |
306 | { | |
307 | struct hvcall_mpp_x_data mpp_x_data; | |
308 | ||
309 | if (!firmware_has_feature(FW_FEATURE_XCMO)) | |
310 | return; | |
311 | if (h_get_mpp_x(&mpp_x_data)) | |
312 | return; | |
313 | ||
314 | seq_printf(m, "coalesced_bytes=%ld\n", mpp_x_data.coalesced_bytes); | |
315 | ||
316 | if (mpp_x_data.pool_coalesced_bytes) | |
317 | seq_printf(m, "pool_coalesced_bytes=%ld\n", | |
318 | mpp_x_data.pool_coalesced_bytes); | |
319 | if (mpp_x_data.pool_purr_cycles) | |
320 | seq_printf(m, "coalesce_pool_purr=%ld\n", mpp_x_data.pool_purr_cycles); | |
321 | if (mpp_x_data.pool_spurr_cycles) | |
322 | seq_printf(m, "coalesce_pool_spurr=%ld\n", mpp_x_data.pool_spurr_cycles); | |
323 | } | |
324 | ||
eddaa9a4 LD |
325 | /* |
326 | * Read the lpar name using the RTAS ibm,get-system-parameter call. | |
327 | * | |
328 | * The name read through this call is updated if changes are made by the end | |
329 | * user on the hypervisor side. | |
330 | * | |
331 | * Some hypervisor (like Qemu) may not provide this value. In that case, a non | |
332 | * null value is returned. | |
333 | */ | |
334 | static int read_rtas_lpar_name(struct seq_file *m) | |
335 | { | |
fff9846b NL |
336 | struct papr_sysparm_buf *buf; |
337 | int err; | |
338 | ||
339 | buf = papr_sysparm_buf_alloc(); | |
340 | if (!buf) | |
eddaa9a4 LD |
341 | return -ENOMEM; |
342 | ||
fff9846b NL |
343 | err = papr_sysparm_get(PAPR_SYSPARM_LPAR_NAME, buf); |
344 | if (!err) | |
345 | seq_printf(m, "partition_name=%s\n", buf->val); | |
346 | ||
347 | papr_sysparm_buf_free(buf); | |
348 | return err; | |
eddaa9a4 LD |
349 | } |
350 | ||
351 | /* | |
352 | * Read the LPAR name from the Device Tree. | |
353 | * | |
354 | * The value read in the DT is not updated if the end-user is touching the LPAR | |
355 | * name on the hypervisor side. | |
356 | */ | |
357 | static int read_dt_lpar_name(struct seq_file *m) | |
358 | { | |
2a066ae1 | 359 | struct device_node *root = of_find_node_by_path("/"); |
eddaa9a4 | 360 | const char *name; |
2a066ae1 | 361 | int ret; |
eddaa9a4 | 362 | |
2a066ae1 CL |
363 | ret = of_property_read_string(root, "ibm,partition-name", &name); |
364 | of_node_put(root); | |
365 | if (ret) | |
eddaa9a4 LD |
366 | return -ENOENT; |
367 | ||
368 | seq_printf(m, "partition_name=%s\n", name); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static void read_lpar_name(struct seq_file *m) | |
373 | { | |
374 | if (read_rtas_lpar_name(m) && read_dt_lpar_name(m)) | |
375 | pr_err_once("Error can't get the LPAR name"); | |
376 | } | |
377 | ||
1da177e4 LT |
378 | #define SPLPAR_MAXLENGTH 1026*(sizeof(char)) |
379 | ||
380 | /* | |
381 | * parse_system_parameter_string() | |
382 | * Retrieve the potential_processors, max_entitled_capacity and friends | |
383 | * through the get-system-parameter rtas call. Replace keyword strings as | |
384 | * necessary. | |
385 | */ | |
386 | static void parse_system_parameter_string(struct seq_file *m) | |
387 | { | |
fff9846b | 388 | struct papr_sysparm_buf *buf; |
1da177e4 | 389 | |
fff9846b NL |
390 | buf = papr_sysparm_buf_alloc(); |
391 | if (!buf) | |
1da177e4 | 392 | return; |
1da177e4 | 393 | |
fff9846b NL |
394 | if (papr_sysparm_get(PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS, buf)) { |
395 | goto out_free; | |
1da177e4 | 396 | } else { |
fff9846b | 397 | const char *local_buffer; |
1da177e4 LT |
398 | int splpar_strlen; |
399 | int idx, w_idx; | |
dd00cc48 | 400 | char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL); |
fff9846b NL |
401 | |
402 | if (!workbuffer) | |
403 | goto out_free; | |
404 | ||
405 | splpar_strlen = be16_to_cpu(buf->len); | |
406 | local_buffer = buf->val; | |
1da177e4 | 407 | |
1da177e4 LT |
408 | w_idx = 0; |
409 | idx = 0; | |
410 | while ((*local_buffer) && (idx < splpar_strlen)) { | |
411 | workbuffer[w_idx++] = local_buffer[idx++]; | |
412 | if ((local_buffer[idx] == ',') | |
413 | || (local_buffer[idx] == '\0')) { | |
414 | workbuffer[w_idx] = '\0'; | |
415 | if (w_idx) { | |
416 | /* avoid the empty string */ | |
417 | seq_printf(m, "%s\n", workbuffer); | |
418 | } | |
419 | memset(workbuffer, 0, SPLPAR_MAXLENGTH); | |
420 | idx++; /* skip the comma */ | |
421 | w_idx = 0; | |
422 | } else if (local_buffer[idx] == '=') { | |
423 | /* code here to replace workbuffer contents | |
424 | with different keyword strings */ | |
425 | if (0 == strcmp(workbuffer, "MaxEntCap")) { | |
426 | strcpy(workbuffer, | |
427 | "partition_max_entitled_capacity"); | |
428 | w_idx = strlen(workbuffer); | |
429 | } | |
430 | if (0 == strcmp(workbuffer, "MaxPlatProcs")) { | |
431 | strcpy(workbuffer, | |
432 | "system_potential_processors"); | |
433 | w_idx = strlen(workbuffer); | |
434 | } | |
435 | } | |
436 | } | |
437 | kfree(workbuffer); | |
438 | local_buffer -= 2; /* back up over strlen value */ | |
439 | } | |
fff9846b NL |
440 | out_free: |
441 | papr_sysparm_buf_free(buf); | |
1da177e4 LT |
442 | } |
443 | ||
1da177e4 LT |
444 | /* Return the number of processors in the system. |
445 | * This function reads through the device tree and counts | |
446 | * the virtual processors, this does not include threads. | |
447 | */ | |
448 | static int lparcfg_count_active_processors(void) | |
449 | { | |
9625e69a | 450 | struct device_node *cpus_dn; |
1da177e4 LT |
451 | int count = 0; |
452 | ||
9625e69a | 453 | for_each_node_by_type(cpus_dn, "cpu") { |
1da177e4 | 454 | #ifdef LPARCFG_DEBUG |
8354be9c | 455 | printk(KERN_ERR "cpus_dn %p\n", cpus_dn); |
1da177e4 LT |
456 | #endif |
457 | count++; | |
458 | } | |
459 | return count; | |
460 | } | |
461 | ||
ffa5abbd BK |
462 | static void pseries_cmo_data(struct seq_file *m) |
463 | { | |
464 | int cpu; | |
465 | unsigned long cmo_faults = 0; | |
466 | unsigned long cmo_fault_time = 0; | |
467 | ||
ac22429d RJ |
468 | seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO)); |
469 | ||
ffa5abbd BK |
470 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
471 | return; | |
472 | ||
473 | for_each_possible_cpu(cpu) { | |
7ffcf8ec AB |
474 | cmo_faults += be64_to_cpu(lppaca_of(cpu).cmo_faults); |
475 | cmo_fault_time += be64_to_cpu(lppaca_of(cpu).cmo_fault_time); | |
ffa5abbd BK |
476 | } |
477 | ||
478 | seq_printf(m, "cmo_faults=%lu\n", cmo_faults); | |
479 | seq_printf(m, "cmo_fault_time_usec=%lu\n", | |
480 | cmo_fault_time / tb_ticks_per_usec); | |
ac22429d RJ |
481 | seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp()); |
482 | seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp()); | |
483 | seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size()); | |
ffa5abbd BK |
484 | } |
485 | ||
0559f0a7 AB |
486 | static void splpar_dispatch_data(struct seq_file *m) |
487 | { | |
488 | int cpu; | |
489 | unsigned long dispatches = 0; | |
490 | unsigned long dispatch_dispersions = 0; | |
491 | ||
492 | for_each_possible_cpu(cpu) { | |
7ffcf8ec AB |
493 | dispatches += be32_to_cpu(lppaca_of(cpu).yield_count); |
494 | dispatch_dispersions += | |
495 | be32_to_cpu(lppaca_of(cpu).dispersion_count); | |
0559f0a7 AB |
496 | } |
497 | ||
498 | seq_printf(m, "dispatches=%lu\n", dispatches); | |
499 | seq_printf(m, "dispatch_dispersions=%lu\n", dispatch_dispersions); | |
500 | } | |
501 | ||
6fe9d1fa VS |
502 | static void parse_em_data(struct seq_file *m) |
503 | { | |
504 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
505 | ||
f5f6cbb6 BH |
506 | if (firmware_has_feature(FW_FEATURE_LPAR) && |
507 | plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS) | |
6fe9d1fa VS |
508 | seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]); |
509 | } | |
510 | ||
772b039f AP |
511 | static void maxmem_data(struct seq_file *m) |
512 | { | |
513 | unsigned long maxmem = 0; | |
514 | ||
f1dbc1c5 | 515 | maxmem += (unsigned long)drmem_info->n_lmbs * drmem_info->lmb_size; |
772b039f AP |
516 | maxmem += hugetlb_total_pages() * PAGE_SIZE; |
517 | ||
f1dbc1c5 | 518 | seq_printf(m, "MaxMem=%lu\n", maxmem); |
772b039f AP |
519 | } |
520 | ||
16e9f994 | 521 | static int pseries_lparcfg_data(struct seq_file *m, void *v) |
1da177e4 LT |
522 | { |
523 | int partition_potential_processors; | |
524 | int partition_active_processors; | |
1da177e4 | 525 | struct device_node *rtas_node; |
ca5de4e6 | 526 | const __be32 *lrdrp = NULL; |
1da177e4 | 527 | |
8c8dc322 | 528 | rtas_node = of_find_node_by_path("/rtas"); |
2b9a32ed | 529 | if (rtas_node) |
e2eb6392 | 530 | lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL); |
1da177e4 LT |
531 | |
532 | if (lrdrp == NULL) { | |
271c3f35 | 533 | partition_potential_processors = vdso_data->processorCount; |
1da177e4 | 534 | } else { |
ca5de4e6 | 535 | partition_potential_processors = be32_to_cpup(lrdrp + 4); |
1da177e4 | 536 | } |
8c8dc322 | 537 | of_node_put(rtas_node); |
1da177e4 LT |
538 | |
539 | partition_active_processors = lparcfg_count_active_processors(); | |
540 | ||
1ababe11 | 541 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) { |
1da177e4 | 542 | /* this call handles the ibm,get-system-parameter contents */ |
eddaa9a4 | 543 | read_lpar_name(m); |
1da177e4 | 544 | parse_system_parameter_string(m); |
11529396 | 545 | parse_ppp_data(m); |
dfc3403f | 546 | parse_mpp_data(m); |
9ee820fa | 547 | parse_mpp_x_data(m); |
ffa5abbd | 548 | pseries_cmo_data(m); |
0559f0a7 | 549 | splpar_dispatch_data(m); |
1da177e4 | 550 | |
11529396 | 551 | seq_printf(m, "purr=%ld\n", get_purr()); |
9f3ba362 | 552 | seq_printf(m, "tbr=%ld\n", mftb()); |
1da177e4 LT |
553 | } else { /* non SPLPAR case */ |
554 | ||
555 | seq_printf(m, "system_active_processors=%d\n", | |
556 | partition_potential_processors); | |
557 | ||
558 | seq_printf(m, "system_potential_processors=%d\n", | |
559 | partition_potential_processors); | |
560 | ||
561 | seq_printf(m, "partition_max_entitled_capacity=%d\n", | |
562 | partition_potential_processors * 100); | |
563 | ||
564 | seq_printf(m, "partition_entitled_capacity=%d\n", | |
565 | partition_active_processors * 100); | |
566 | } | |
567 | ||
5d1bc776 SC |
568 | show_gpci_data(m); |
569 | ||
1da177e4 LT |
570 | seq_printf(m, "partition_active_processors=%d\n", |
571 | partition_active_processors); | |
572 | ||
573 | seq_printf(m, "partition_potential_processors=%d\n", | |
574 | partition_potential_processors); | |
575 | ||
f13c13a0 | 576 | seq_printf(m, "shared_processor_mode=%d\n", |
eac030b2 | 577 | lppaca_shared_proc()); |
1da177e4 | 578 | |
387e220a | 579 | #ifdef CONFIG_PPC_64S_HASH_MMU |
3d3282fd NP |
580 | if (!radix_enabled()) |
581 | seq_printf(m, "slb_size=%d\n", mmu_slb_size); | |
d8c476ee | 582 | #endif |
6fe9d1fa | 583 | parse_em_data(m); |
772b039f | 584 | maxmem_data(m); |
6fe9d1fa | 585 | |
6ce56e1a LD |
586 | seq_printf(m, "security_flavor=%u\n", pseries_security_flavor); |
587 | ||
1da177e4 LT |
588 | return 0; |
589 | } | |
590 | ||
11529396 NF |
591 | static ssize_t update_ppp(u64 *entitlement, u8 *weight) |
592 | { | |
398778f7 RJ |
593 | struct hvcall_ppp_data ppp_data; |
594 | u8 new_weight; | |
11529396 NF |
595 | u64 new_entitled; |
596 | ssize_t retval; | |
597 | ||
598 | /* Get our current parameters */ | |
398778f7 | 599 | retval = h_get_ppp(&ppp_data); |
11529396 NF |
600 | if (retval) |
601 | return retval; | |
602 | ||
11529396 | 603 | if (entitlement) { |
398778f7 | 604 | new_weight = ppp_data.weight; |
11529396 NF |
605 | new_entitled = *entitlement; |
606 | } else if (weight) { | |
607 | new_weight = *weight; | |
398778f7 | 608 | new_entitled = ppp_data.entitlement; |
11529396 NF |
609 | } else |
610 | return -EINVAL; | |
611 | ||
fe333321 | 612 | pr_debug("%s: current_entitled = %llu, current_weight = %u\n", |
5df72bf3 | 613 | __func__, ppp_data.entitlement, ppp_data.weight); |
11529396 | 614 | |
fe333321 | 615 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 616 | __func__, new_entitled, new_weight); |
11529396 NF |
617 | |
618 | retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight); | |
619 | return retval; | |
620 | } | |
621 | ||
dfc3403f NF |
622 | /** |
623 | * update_mpp | |
624 | * | |
625 | * Update the memory entitlement and weight for the partition. Caller must | |
626 | * specify either a new entitlement or weight, not both, to be updated | |
627 | * since the h_set_mpp call takes both entitlement and weight as parameters. | |
628 | */ | |
629 | static ssize_t update_mpp(u64 *entitlement, u8 *weight) | |
630 | { | |
631 | struct hvcall_mpp_data mpp_data; | |
632 | u64 new_entitled; | |
633 | u8 new_weight; | |
634 | ssize_t rc; | |
635 | ||
22e1a4dd NF |
636 | if (entitlement) { |
637 | /* Check with vio to ensure the new memory entitlement | |
638 | * can be handled. | |
639 | */ | |
640 | rc = vio_cmo_entitlement_update(*entitlement); | |
641 | if (rc) | |
642 | return rc; | |
643 | } | |
644 | ||
dfc3403f NF |
645 | rc = h_get_mpp(&mpp_data); |
646 | if (rc) | |
647 | return rc; | |
648 | ||
649 | if (entitlement) { | |
650 | new_weight = mpp_data.mem_weight; | |
651 | new_entitled = *entitlement; | |
652 | } else if (weight) { | |
653 | new_weight = *weight; | |
654 | new_entitled = mpp_data.entitled_mem; | |
655 | } else | |
656 | return -EINVAL; | |
657 | ||
658 | pr_debug("%s: current_entitled = %lu, current_weight = %u\n", | |
5df72bf3 | 659 | __func__, mpp_data.entitled_mem, mpp_data.mem_weight); |
dfc3403f | 660 | |
fe333321 | 661 | pr_debug("%s: new_entitled = %llu, new_weight = %u\n", |
5df72bf3 | 662 | __func__, new_entitled, new_weight); |
dfc3403f NF |
663 | |
664 | rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight); | |
665 | return rc; | |
666 | } | |
667 | ||
1da177e4 LT |
668 | /* |
669 | * Interface for changing system parameters (variable capacity weight | |
670 | * and entitled capacity). Format of input is "param_name=value"; | |
671 | * anything after value is ignored. Valid parameters at this time are | |
672 | * "partition_entitled_capacity" and "capacity_weight". We use | |
673 | * H_SET_PPP to alter parameters. | |
674 | * | |
675 | * This function should be invoked only on systems with | |
676 | * FW_FEATURE_SPLPAR. | |
677 | */ | |
678 | static ssize_t lparcfg_write(struct file *file, const char __user * buf, | |
679 | size_t count, loff_t * off) | |
680 | { | |
74422e2b | 681 | char kbuf[64]; |
1da177e4 LT |
682 | char *tmp; |
683 | u64 new_entitled, *new_entitled_ptr = &new_entitled; | |
684 | u8 new_weight, *new_weight_ptr = &new_weight; | |
16c14b46 | 685 | ssize_t retval; |
1da177e4 | 686 | |
f5339277 | 687 | if (!firmware_has_feature(FW_FEATURE_SPLPAR)) |
0524aad7 SR |
688 | return -EINVAL; |
689 | ||
74422e2b | 690 | if (count > sizeof(kbuf)) |
16c14b46 | 691 | return -EINVAL; |
1da177e4 | 692 | |
1da177e4 | 693 | if (copy_from_user(kbuf, buf, count)) |
16c14b46 | 694 | return -EFAULT; |
1da177e4 | 695 | |
1da177e4 LT |
696 | kbuf[count - 1] = '\0'; |
697 | tmp = strchr(kbuf, '='); | |
698 | if (!tmp) | |
16c14b46 | 699 | return -EINVAL; |
1da177e4 LT |
700 | |
701 | *tmp++ = '\0'; | |
702 | ||
703 | if (!strcmp(kbuf, "partition_entitled_capacity")) { | |
704 | char *endp; | |
705 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
706 | if (endp == tmp) | |
16c14b46 | 707 | return -EINVAL; |
11529396 NF |
708 | |
709 | retval = update_ppp(new_entitled_ptr, NULL); | |
2147783d HM |
710 | |
711 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { | |
712 | /* | |
713 | * The hypervisor assigns VAS resources based | |
714 | * on entitled capacity for shared mode. | |
715 | * Reconfig VAS windows based on DLPAR CPU events. | |
716 | */ | |
717 | if (pseries_vas_dlpar_cpu() != 0) | |
718 | retval = H_HARDWARE; | |
719 | } | |
1da177e4 LT |
720 | } else if (!strcmp(kbuf, "capacity_weight")) { |
721 | char *endp; | |
722 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
723 | if (endp == tmp) | |
16c14b46 | 724 | return -EINVAL; |
1da177e4 | 725 | |
11529396 | 726 | retval = update_ppp(NULL, new_weight_ptr); |
dfc3403f NF |
727 | } else if (!strcmp(kbuf, "entitled_memory")) { |
728 | char *endp; | |
729 | *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10); | |
730 | if (endp == tmp) | |
16c14b46 | 731 | return -EINVAL; |
dfc3403f NF |
732 | |
733 | retval = update_mpp(new_entitled_ptr, NULL); | |
734 | } else if (!strcmp(kbuf, "entitled_memory_weight")) { | |
735 | char *endp; | |
736 | *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10); | |
737 | if (endp == tmp) | |
16c14b46 | 738 | return -EINVAL; |
dfc3403f NF |
739 | |
740 | retval = update_mpp(NULL, new_weight_ptr); | |
11529396 | 741 | } else |
16c14b46 | 742 | return -EINVAL; |
1da177e4 | 743 | |
706c8c93 | 744 | if (retval == H_SUCCESS || retval == H_CONSTRAINED) { |
1da177e4 | 745 | retval = count; |
706c8c93 | 746 | } else if (retval == H_BUSY) { |
1da177e4 | 747 | retval = -EBUSY; |
706c8c93 | 748 | } else if (retval == H_HARDWARE) { |
1da177e4 | 749 | retval = -EIO; |
706c8c93 | 750 | } else if (retval == H_PARAMETER) { |
1da177e4 | 751 | retval = -EINVAL; |
1da177e4 LT |
752 | } |
753 | ||
1da177e4 LT |
754 | return retval; |
755 | } | |
756 | ||
16e9f994 SR |
757 | static int lparcfg_data(struct seq_file *m, void *v) |
758 | { | |
759 | struct device_node *rootdn; | |
760 | const char *model = ""; | |
761 | const char *system_id = ""; | |
762 | const char *tmp; | |
ca5de4e6 | 763 | const __be32 *lp_index_ptr; |
a7f67bdf | 764 | unsigned int lp_index = 0; |
16e9f994 | 765 | |
8354be9c | 766 | seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS); |
16e9f994 | 767 | |
8c8dc322 | 768 | rootdn = of_find_node_by_path("/"); |
16e9f994 | 769 | if (rootdn) { |
e2eb6392 | 770 | tmp = of_get_property(rootdn, "model", NULL); |
f5339277 | 771 | if (tmp) |
16e9f994 | 772 | model = tmp; |
e2eb6392 | 773 | tmp = of_get_property(rootdn, "system-id", NULL); |
f5339277 | 774 | if (tmp) |
16e9f994 | 775 | system_id = tmp; |
e2eb6392 SR |
776 | lp_index_ptr = of_get_property(rootdn, "ibm,partition-no", |
777 | NULL); | |
16e9f994 | 778 | if (lp_index_ptr) |
ca5de4e6 | 779 | lp_index = be32_to_cpup(lp_index_ptr); |
8c8dc322 | 780 | of_node_put(rootdn); |
16e9f994 SR |
781 | } |
782 | seq_printf(m, "serial_number=%s\n", system_id); | |
783 | seq_printf(m, "system_type=%s\n", model); | |
784 | seq_printf(m, "partition_id=%d\n", (int)lp_index); | |
785 | ||
16e9f994 SR |
786 | return pseries_lparcfg_data(m, v); |
787 | } | |
788 | ||
1da177e4 LT |
789 | static int lparcfg_open(struct inode *inode, struct file *file) |
790 | { | |
791 | return single_open(file, lparcfg_data, NULL); | |
792 | } | |
793 | ||
97a32539 AD |
794 | static const struct proc_ops lparcfg_proc_ops = { |
795 | .proc_read = seq_read, | |
796 | .proc_write = lparcfg_write, | |
797 | .proc_open = lparcfg_open, | |
798 | .proc_release = single_release, | |
799 | .proc_lseek = seq_lseek, | |
1da177e4 LT |
800 | }; |
801 | ||
1c21a293 | 802 | static int __init lparcfg_init(void) |
1da177e4 | 803 | { |
57ad583f | 804 | umode_t mode = 0444; |
9c74ecfd | 805 | long retval; |
1da177e4 LT |
806 | |
807 | /* Allow writing if we have FW_FEATURE_SPLPAR */ | |
f5339277 | 808 | if (firmware_has_feature(FW_FEATURE_SPLPAR)) |
57ad583f | 809 | mode |= 0200; |
1da177e4 | 810 | |
97a32539 | 811 | if (!proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_proc_ops)) { |
188917e1 | 812 | printk(KERN_ERR "Failed to create powerpc/lparcfg\n"); |
1da177e4 LT |
813 | return -EIO; |
814 | } | |
9c74ecfd SH |
815 | |
816 | /* If this call fails, it would result in APP values | |
817 | * being wrong for since boot reports of lparstat | |
818 | */ | |
819 | retval = h_pic(&boot_pool_idle_time, NULL); | |
820 | ||
821 | if (retval != H_SUCCESS) | |
822 | pr_debug("H_PIC failed during lparcfg init retval: %ld\n", | |
823 | retval); | |
824 | ||
1da177e4 LT |
825 | return 0; |
826 | } | |
f5f6cbb6 | 827 | machine_device_initcall(pseries, lparcfg_init); |