Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * palinfo.c | |
3 | * | |
4 | * Prints processor specific information reported by PAL. | |
5 | * This code is based on specification of PAL as of the | |
6 | * Intel IA-64 Architecture Software Developer's Manual v1.0. | |
7 | * | |
8 | * | |
9 | * Copyright (C) 2000-2001, 2003 Hewlett-Packard Co | |
10 | * Stephane Eranian <eranian@hpl.hp.com> | |
11 | * Copyright (C) 2004 Intel Corporation | |
12 | * Ashok Raj <ashok.raj@intel.com> | |
13 | * | |
14 | * 05/26/2000 S.Eranian initial release | |
15 | * 08/21/2000 S.Eranian updated to July 2000 PAL specs | |
16 | * 02/05/2001 S.Eranian fixed module support | |
17 | * 10/23/2001 S.Eranian updated pal_perf_mon_info bug fixes | |
18 | * 03/24/2004 Ashok Raj updated to work with CPU Hotplug | |
19 | */ | |
20 | #include <linux/config.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/proc_fs.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/efi.h> | |
28 | #include <linux/notifier.h> | |
29 | #include <linux/cpu.h> | |
30 | #include <linux/cpumask.h> | |
31 | ||
32 | #include <asm/pal.h> | |
33 | #include <asm/sal.h> | |
34 | #include <asm/page.h> | |
35 | #include <asm/processor.h> | |
36 | #include <linux/smp.h> | |
37 | ||
38 | MODULE_AUTHOR("Stephane Eranian <eranian@hpl.hp.com>"); | |
39 | MODULE_DESCRIPTION("/proc interface to IA-64 PAL"); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
42 | #define PALINFO_VERSION "0.5" | |
43 | ||
44 | typedef int (*palinfo_func_t)(char*); | |
45 | ||
46 | typedef struct { | |
47 | const char *name; /* name of the proc entry */ | |
48 | palinfo_func_t proc_read; /* function to call for reading */ | |
49 | struct proc_dir_entry *entry; /* registered entry (removal) */ | |
50 | } palinfo_entry_t; | |
51 | ||
52 | ||
53 | /* | |
54 | * A bunch of string array to get pretty printing | |
55 | */ | |
56 | ||
57 | static char *cache_types[] = { | |
58 | "", /* not used */ | |
59 | "Instruction", | |
60 | "Data", | |
61 | "Data/Instruction" /* unified */ | |
62 | }; | |
63 | ||
64 | static const char *cache_mattrib[]={ | |
65 | "WriteThrough", | |
66 | "WriteBack", | |
67 | "", /* reserved */ | |
68 | "" /* reserved */ | |
69 | }; | |
70 | ||
71 | static const char *cache_st_hints[]={ | |
72 | "Temporal, level 1", | |
73 | "Reserved", | |
74 | "Reserved", | |
75 | "Non-temporal, all levels", | |
76 | "Reserved", | |
77 | "Reserved", | |
78 | "Reserved", | |
79 | "Reserved" | |
80 | }; | |
81 | ||
82 | static const char *cache_ld_hints[]={ | |
83 | "Temporal, level 1", | |
84 | "Non-temporal, level 1", | |
85 | "Reserved", | |
86 | "Non-temporal, all levels", | |
87 | "Reserved", | |
88 | "Reserved", | |
89 | "Reserved", | |
90 | "Reserved" | |
91 | }; | |
92 | ||
93 | static const char *rse_hints[]={ | |
94 | "enforced lazy", | |
95 | "eager stores", | |
96 | "eager loads", | |
97 | "eager loads and stores" | |
98 | }; | |
99 | ||
100 | #define RSE_HINTS_COUNT ARRAY_SIZE(rse_hints) | |
101 | ||
102 | static const char *mem_attrib[]={ | |
103 | "WB", /* 000 */ | |
104 | "SW", /* 001 */ | |
105 | "010", /* 010 */ | |
106 | "011", /* 011 */ | |
107 | "UC", /* 100 */ | |
108 | "UCE", /* 101 */ | |
109 | "WC", /* 110 */ | |
110 | "NaTPage" /* 111 */ | |
111 | }; | |
112 | ||
113 | /* | |
114 | * Take a 64bit vector and produces a string such that | |
115 | * if bit n is set then 2^n in clear text is generated. The adjustment | |
116 | * to the right unit is also done. | |
117 | * | |
118 | * Input: | |
119 | * - a pointer to a buffer to hold the string | |
120 | * - a 64-bit vector | |
121 | * Ouput: | |
122 | * - a pointer to the end of the buffer | |
123 | * | |
124 | */ | |
125 | static char * | |
126 | bitvector_process(char *p, u64 vector) | |
127 | { | |
128 | int i,j; | |
129 | const char *units[]={ "", "K", "M", "G", "T" }; | |
130 | ||
131 | for (i=0, j=0; i < 64; i++ , j=i/10) { | |
132 | if (vector & 0x1) { | |
133 | p += sprintf(p, "%d%s ", 1 << (i-j*10), units[j]); | |
134 | } | |
135 | vector >>= 1; | |
136 | } | |
137 | return p; | |
138 | } | |
139 | ||
140 | /* | |
141 | * Take a 64bit vector and produces a string such that | |
142 | * if bit n is set then register n is present. The function | |
143 | * takes into account consecutive registers and prints out ranges. | |
144 | * | |
145 | * Input: | |
146 | * - a pointer to a buffer to hold the string | |
147 | * - a 64-bit vector | |
148 | * Ouput: | |
149 | * - a pointer to the end of the buffer | |
150 | * | |
151 | */ | |
152 | static char * | |
153 | bitregister_process(char *p, u64 *reg_info, int max) | |
154 | { | |
155 | int i, begin, skip = 0; | |
156 | u64 value = reg_info[0]; | |
157 | ||
158 | value >>= i = begin = ffs(value) - 1; | |
159 | ||
160 | for(; i < max; i++ ) { | |
161 | ||
162 | if (i != 0 && (i%64) == 0) value = *++reg_info; | |
163 | ||
164 | if ((value & 0x1) == 0 && skip == 0) { | |
165 | if (begin <= i - 2) | |
166 | p += sprintf(p, "%d-%d ", begin, i-1); | |
167 | else | |
168 | p += sprintf(p, "%d ", i-1); | |
169 | skip = 1; | |
170 | begin = -1; | |
171 | } else if ((value & 0x1) && skip == 1) { | |
172 | skip = 0; | |
173 | begin = i; | |
174 | } | |
175 | value >>=1; | |
176 | } | |
177 | if (begin > -1) { | |
178 | if (begin < 127) | |
179 | p += sprintf(p, "%d-127", begin); | |
180 | else | |
181 | p += sprintf(p, "127"); | |
182 | } | |
183 | ||
184 | return p; | |
185 | } | |
186 | ||
187 | static int | |
188 | power_info(char *page) | |
189 | { | |
190 | s64 status; | |
191 | char *p = page; | |
192 | u64 halt_info_buffer[8]; | |
193 | pal_power_mgmt_info_u_t *halt_info =(pal_power_mgmt_info_u_t *)halt_info_buffer; | |
194 | int i; | |
195 | ||
196 | status = ia64_pal_halt_info(halt_info); | |
197 | if (status != 0) return 0; | |
198 | ||
199 | for (i=0; i < 8 ; i++ ) { | |
200 | if (halt_info[i].pal_power_mgmt_info_s.im == 1) { | |
201 | p += sprintf(p, "Power level %d:\n" | |
202 | "\tentry_latency : %d cycles\n" | |
203 | "\texit_latency : %d cycles\n" | |
204 | "\tpower consumption : %d mW\n" | |
205 | "\tCache+TLB coherency : %s\n", i, | |
206 | halt_info[i].pal_power_mgmt_info_s.entry_latency, | |
207 | halt_info[i].pal_power_mgmt_info_s.exit_latency, | |
208 | halt_info[i].pal_power_mgmt_info_s.power_consumption, | |
209 | halt_info[i].pal_power_mgmt_info_s.co ? "Yes" : "No"); | |
210 | } else { | |
211 | p += sprintf(p,"Power level %d: not implemented\n",i); | |
212 | } | |
213 | } | |
214 | return p - page; | |
215 | } | |
216 | ||
217 | static int | |
218 | cache_info(char *page) | |
219 | { | |
220 | char *p = page; | |
221 | u64 i, levels, unique_caches; | |
222 | pal_cache_config_info_t cci; | |
223 | int j, k; | |
224 | s64 status; | |
225 | ||
226 | if ((status = ia64_pal_cache_summary(&levels, &unique_caches)) != 0) { | |
227 | printk(KERN_ERR "ia64_pal_cache_summary=%ld\n", status); | |
228 | return 0; | |
229 | } | |
230 | ||
231 | p += sprintf(p, "Cache levels : %ld\nUnique caches : %ld\n\n", levels, unique_caches); | |
232 | ||
233 | for (i=0; i < levels; i++) { | |
234 | ||
235 | for (j=2; j >0 ; j--) { | |
236 | ||
237 | /* even without unification some level may not be present */ | |
238 | if ((status=ia64_pal_cache_config_info(i,j, &cci)) != 0) { | |
239 | continue; | |
240 | } | |
241 | p += sprintf(p, | |
242 | "%s Cache level %lu:\n" | |
243 | "\tSize : %lu bytes\n" | |
244 | "\tAttributes : ", | |
245 | cache_types[j+cci.pcci_unified], i+1, | |
246 | cci.pcci_cache_size); | |
247 | ||
248 | if (cci.pcci_unified) p += sprintf(p, "Unified "); | |
249 | ||
250 | p += sprintf(p, "%s\n", cache_mattrib[cci.pcci_cache_attr]); | |
251 | ||
252 | p += sprintf(p, | |
253 | "\tAssociativity : %d\n" | |
254 | "\tLine size : %d bytes\n" | |
255 | "\tStride : %d bytes\n", | |
256 | cci.pcci_assoc, 1<<cci.pcci_line_size, 1<<cci.pcci_stride); | |
257 | if (j == 1) | |
258 | p += sprintf(p, "\tStore latency : N/A\n"); | |
259 | else | |
260 | p += sprintf(p, "\tStore latency : %d cycle(s)\n", | |
261 | cci.pcci_st_latency); | |
262 | ||
263 | p += sprintf(p, | |
264 | "\tLoad latency : %d cycle(s)\n" | |
265 | "\tStore hints : ", cci.pcci_ld_latency); | |
266 | ||
267 | for(k=0; k < 8; k++ ) { | |
268 | if ( cci.pcci_st_hints & 0x1) | |
269 | p += sprintf(p, "[%s]", cache_st_hints[k]); | |
270 | cci.pcci_st_hints >>=1; | |
271 | } | |
272 | p += sprintf(p, "\n\tLoad hints : "); | |
273 | ||
274 | for(k=0; k < 8; k++ ) { | |
275 | if (cci.pcci_ld_hints & 0x1) | |
276 | p += sprintf(p, "[%s]", cache_ld_hints[k]); | |
277 | cci.pcci_ld_hints >>=1; | |
278 | } | |
279 | p += sprintf(p, | |
280 | "\n\tAlias boundary : %d byte(s)\n" | |
281 | "\tTag LSB : %d\n" | |
282 | "\tTag MSB : %d\n", | |
283 | 1<<cci.pcci_alias_boundary, cci.pcci_tag_lsb, | |
284 | cci.pcci_tag_msb); | |
285 | ||
286 | /* when unified, data(j=2) is enough */ | |
287 | if (cci.pcci_unified) break; | |
288 | } | |
289 | } | |
290 | return p - page; | |
291 | } | |
292 | ||
293 | ||
294 | static int | |
295 | vm_info(char *page) | |
296 | { | |
297 | char *p = page; | |
298 | u64 tr_pages =0, vw_pages=0, tc_pages; | |
299 | u64 attrib; | |
300 | pal_vm_info_1_u_t vm_info_1; | |
301 | pal_vm_info_2_u_t vm_info_2; | |
302 | pal_tc_info_u_t tc_info; | |
303 | ia64_ptce_info_t ptce; | |
304 | const char *sep; | |
305 | int i, j; | |
306 | s64 status; | |
307 | ||
308 | if ((status = ia64_pal_vm_summary(&vm_info_1, &vm_info_2)) !=0) { | |
309 | printk(KERN_ERR "ia64_pal_vm_summary=%ld\n", status); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | ||
314 | p += sprintf(p, | |
315 | "Physical Address Space : %d bits\n" | |
316 | "Virtual Address Space : %d bits\n" | |
317 | "Protection Key Registers(PKR) : %d\n" | |
318 | "Implemented bits in PKR.key : %d\n" | |
319 | "Hash Tag ID : 0x%x\n" | |
320 | "Size of RR.rid : %d\n", | |
321 | vm_info_1.pal_vm_info_1_s.phys_add_size, | |
322 | vm_info_2.pal_vm_info_2_s.impl_va_msb+1, vm_info_1.pal_vm_info_1_s.max_pkr+1, | |
323 | vm_info_1.pal_vm_info_1_s.key_size, vm_info_1.pal_vm_info_1_s.hash_tag_id, | |
324 | vm_info_2.pal_vm_info_2_s.rid_size); | |
325 | ||
326 | if (ia64_pal_mem_attrib(&attrib) != 0) | |
327 | return 0; | |
328 | ||
329 | p += sprintf(p, "Supported memory attributes : "); | |
330 | sep = ""; | |
331 | for (i = 0; i < 8; i++) { | |
332 | if (attrib & (1 << i)) { | |
333 | p += sprintf(p, "%s%s", sep, mem_attrib[i]); | |
334 | sep = ", "; | |
335 | } | |
336 | } | |
337 | p += sprintf(p, "\n"); | |
338 | ||
339 | if ((status = ia64_pal_vm_page_size(&tr_pages, &vw_pages)) !=0) { | |
340 | printk(KERN_ERR "ia64_pal_vm_page_size=%ld\n", status); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | p += sprintf(p, | |
345 | "\nTLB walker : %simplemented\n" | |
346 | "Number of DTR : %d\n" | |
347 | "Number of ITR : %d\n" | |
348 | "TLB insertable page sizes : ", | |
349 | vm_info_1.pal_vm_info_1_s.vw ? "" : "not ", | |
350 | vm_info_1.pal_vm_info_1_s.max_dtr_entry+1, | |
351 | vm_info_1.pal_vm_info_1_s.max_itr_entry+1); | |
352 | ||
353 | ||
354 | p = bitvector_process(p, tr_pages); | |
355 | ||
356 | p += sprintf(p, "\nTLB purgeable page sizes : "); | |
357 | ||
358 | p = bitvector_process(p, vw_pages); | |
359 | ||
360 | if ((status=ia64_get_ptce(&ptce)) != 0) { | |
361 | printk(KERN_ERR "ia64_get_ptce=%ld\n", status); | |
362 | return 0; | |
363 | } | |
364 | ||
365 | p += sprintf(p, | |
366 | "\nPurge base address : 0x%016lx\n" | |
367 | "Purge outer loop count : %d\n" | |
368 | "Purge inner loop count : %d\n" | |
369 | "Purge outer loop stride : %d\n" | |
370 | "Purge inner loop stride : %d\n", | |
371 | ptce.base, ptce.count[0], ptce.count[1], ptce.stride[0], ptce.stride[1]); | |
372 | ||
373 | p += sprintf(p, | |
374 | "TC Levels : %d\n" | |
375 | "Unique TC(s) : %d\n", | |
376 | vm_info_1.pal_vm_info_1_s.num_tc_levels, | |
377 | vm_info_1.pal_vm_info_1_s.max_unique_tcs); | |
378 | ||
379 | for(i=0; i < vm_info_1.pal_vm_info_1_s.num_tc_levels; i++) { | |
380 | for (j=2; j>0 ; j--) { | |
381 | tc_pages = 0; /* just in case */ | |
382 | ||
383 | ||
384 | /* even without unification, some levels may not be present */ | |
385 | if ((status=ia64_pal_vm_info(i,j, &tc_info, &tc_pages)) != 0) { | |
386 | continue; | |
387 | } | |
388 | ||
389 | p += sprintf(p, | |
390 | "\n%s Translation Cache Level %d:\n" | |
391 | "\tHash sets : %d\n" | |
392 | "\tAssociativity : %d\n" | |
393 | "\tNumber of entries : %d\n" | |
394 | "\tFlags : ", | |
395 | cache_types[j+tc_info.tc_unified], i+1, tc_info.tc_num_sets, | |
396 | tc_info.tc_associativity, tc_info.tc_num_entries); | |
397 | ||
398 | if (tc_info.tc_pf) p += sprintf(p, "PreferredPageSizeOptimized "); | |
399 | if (tc_info.tc_unified) p += sprintf(p, "Unified "); | |
400 | if (tc_info.tc_reduce_tr) p += sprintf(p, "TCReduction"); | |
401 | ||
402 | p += sprintf(p, "\n\tSupported page sizes: "); | |
403 | ||
404 | p = bitvector_process(p, tc_pages); | |
405 | ||
406 | /* when unified date (j=2) is enough */ | |
407 | if (tc_info.tc_unified) break; | |
408 | } | |
409 | } | |
410 | p += sprintf(p, "\n"); | |
411 | ||
412 | return p - page; | |
413 | } | |
414 | ||
415 | ||
416 | static int | |
417 | register_info(char *page) | |
418 | { | |
419 | char *p = page; | |
420 | u64 reg_info[2]; | |
421 | u64 info; | |
422 | u64 phys_stacked; | |
423 | pal_hints_u_t hints; | |
424 | u64 iregs, dregs; | |
425 | char *info_type[]={ | |
426 | "Implemented AR(s)", | |
427 | "AR(s) with read side-effects", | |
428 | "Implemented CR(s)", | |
429 | "CR(s) with read side-effects", | |
430 | }; | |
431 | ||
432 | for(info=0; info < 4; info++) { | |
433 | ||
434 | if (ia64_pal_register_info(info, ®_info[0], ®_info[1]) != 0) return 0; | |
435 | ||
436 | p += sprintf(p, "%-32s : ", info_type[info]); | |
437 | ||
438 | p = bitregister_process(p, reg_info, 128); | |
439 | ||
440 | p += sprintf(p, "\n"); | |
441 | } | |
442 | ||
443 | if (ia64_pal_rse_info(&phys_stacked, &hints) != 0) return 0; | |
444 | ||
445 | p += sprintf(p, | |
446 | "RSE stacked physical registers : %ld\n" | |
447 | "RSE load/store hints : %ld (%s)\n", | |
448 | phys_stacked, hints.ph_data, | |
449 | hints.ph_data < RSE_HINTS_COUNT ? rse_hints[hints.ph_data]: "(??)"); | |
450 | ||
451 | if (ia64_pal_debug_info(&iregs, &dregs)) | |
452 | return 0; | |
453 | ||
454 | p += sprintf(p, | |
455 | "Instruction debug register pairs : %ld\n" | |
456 | "Data debug register pairs : %ld\n", iregs, dregs); | |
457 | ||
458 | return p - page; | |
459 | } | |
460 | ||
461 | static const char *proc_features[]={ | |
462 | NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, | |
463 | NULL,NULL,NULL,NULL,NULL,NULL,NULL, NULL,NULL, | |
464 | NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, | |
465 | NULL,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL, | |
466 | NULL,NULL,NULL,NULL,NULL, | |
467 | "XIP,XPSR,XFS implemented", | |
468 | "XR1-XR3 implemented", | |
469 | "Disable dynamic predicate prediction", | |
470 | "Disable processor physical number", | |
471 | "Disable dynamic data cache prefetch", | |
472 | "Disable dynamic inst cache prefetch", | |
473 | "Disable dynamic branch prediction", | |
474 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
475 | "Disable BINIT on processor time-out", | |
476 | "Disable dynamic power management (DPM)", | |
477 | "Disable coherency", | |
478 | "Disable cache", | |
479 | "Enable CMCI promotion", | |
480 | "Enable MCA to BINIT promotion", | |
481 | "Enable MCA promotion", | |
482 | "Enable BERR promotion" | |
483 | }; | |
484 | ||
485 | ||
486 | static int | |
487 | processor_info(char *page) | |
488 | { | |
489 | char *p = page; | |
490 | const char **v = proc_features; | |
491 | u64 avail=1, status=1, control=1; | |
492 | int i; | |
493 | s64 ret; | |
494 | ||
495 | if ((ret=ia64_pal_proc_get_features(&avail, &status, &control)) != 0) return 0; | |
496 | ||
497 | for(i=0; i < 64; i++, v++,avail >>=1, status >>=1, control >>=1) { | |
498 | if ( ! *v ) continue; | |
499 | p += sprintf(p, "%-40s : %s%s %s\n", *v, | |
500 | avail & 0x1 ? "" : "NotImpl", | |
501 | avail & 0x1 ? (status & 0x1 ? "On" : "Off"): "", | |
502 | avail & 0x1 ? (control & 0x1 ? "Ctrl" : "NoCtrl"): ""); | |
503 | } | |
504 | return p - page; | |
505 | } | |
506 | ||
507 | static const char *bus_features[]={ | |
508 | NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, | |
509 | NULL,NULL,NULL,NULL,NULL,NULL,NULL, NULL,NULL, | |
510 | NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, | |
511 | NULL,NULL, | |
512 | "Request Bus Parking", | |
513 | "Bus Lock Mask", | |
514 | "Enable Half Transfer", | |
515 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
516 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
517 | NULL, NULL, NULL, NULL, | |
518 | "Enable Cache Line Repl. Shared", | |
519 | "Enable Cache Line Repl. Exclusive", | |
520 | "Disable Transaction Queuing", | |
521 | "Disable Response Error Checking", | |
522 | "Disable Bus Error Checking", | |
523 | "Disable Bus Requester Internal Error Signalling", | |
524 | "Disable Bus Requester Error Signalling", | |
525 | "Disable Bus Initialization Event Checking", | |
526 | "Disable Bus Initialization Event Signalling", | |
527 | "Disable Bus Address Error Checking", | |
528 | "Disable Bus Address Error Signalling", | |
529 | "Disable Bus Data Error Checking" | |
530 | }; | |
531 | ||
532 | ||
533 | static int | |
534 | bus_info(char *page) | |
535 | { | |
536 | char *p = page; | |
537 | const char **v = bus_features; | |
538 | pal_bus_features_u_t av, st, ct; | |
539 | u64 avail, status, control; | |
540 | int i; | |
541 | s64 ret; | |
542 | ||
543 | if ((ret=ia64_pal_bus_get_features(&av, &st, &ct)) != 0) return 0; | |
544 | ||
545 | avail = av.pal_bus_features_val; | |
546 | status = st.pal_bus_features_val; | |
547 | control = ct.pal_bus_features_val; | |
548 | ||
549 | for(i=0; i < 64; i++, v++, avail >>=1, status >>=1, control >>=1) { | |
550 | if ( ! *v ) continue; | |
551 | p += sprintf(p, "%-48s : %s%s %s\n", *v, | |
552 | avail & 0x1 ? "" : "NotImpl", | |
553 | avail & 0x1 ? (status & 0x1 ? "On" : "Off"): "", | |
554 | avail & 0x1 ? (control & 0x1 ? "Ctrl" : "NoCtrl"): ""); | |
555 | } | |
556 | return p - page; | |
557 | } | |
558 | ||
559 | static int | |
560 | version_info(char *page) | |
561 | { | |
562 | pal_version_u_t min_ver, cur_ver; | |
563 | char *p = page; | |
564 | ||
565 | /* The PAL_VERSION call is advertised as being able to support | |
566 | * both physical and virtual mode calls. This seems to be a documentation | |
567 | * bug rather than firmware bug. In fact, it does only support physical mode. | |
568 | * So now the code reflects this fact and the pal_version() has been updated | |
569 | * accordingly. | |
570 | */ | |
571 | if (ia64_pal_version(&min_ver, &cur_ver) != 0) return 0; | |
572 | ||
573 | p += sprintf(p, | |
574 | "PAL_vendor : 0x%02x (min=0x%02x)\n" | |
575 | "PAL_A : %x.%x.%x (min=%x.%x.%x)\n" | |
576 | "PAL_B : %x.%x.%x (min=%x.%x.%x)\n", | |
577 | cur_ver.pal_version_s.pv_pal_vendor, min_ver.pal_version_s.pv_pal_vendor, | |
578 | ||
579 | cur_ver.pal_version_s.pv_pal_a_model>>4, | |
580 | cur_ver.pal_version_s.pv_pal_a_model&0xf, cur_ver.pal_version_s.pv_pal_a_rev, | |
581 | min_ver.pal_version_s.pv_pal_a_model>>4, | |
582 | min_ver.pal_version_s.pv_pal_a_model&0xf, min_ver.pal_version_s.pv_pal_a_rev, | |
583 | ||
584 | cur_ver.pal_version_s.pv_pal_b_model>>4, | |
585 | cur_ver.pal_version_s.pv_pal_b_model&0xf, cur_ver.pal_version_s.pv_pal_b_rev, | |
586 | min_ver.pal_version_s.pv_pal_b_model>>4, | |
587 | min_ver.pal_version_s.pv_pal_b_model&0xf, min_ver.pal_version_s.pv_pal_b_rev); | |
588 | return p - page; | |
589 | } | |
590 | ||
591 | static int | |
592 | perfmon_info(char *page) | |
593 | { | |
594 | char *p = page; | |
595 | u64 pm_buffer[16]; | |
596 | pal_perf_mon_info_u_t pm_info; | |
597 | ||
598 | if (ia64_pal_perf_mon_info(pm_buffer, &pm_info) != 0) return 0; | |
599 | ||
600 | p += sprintf(p, | |
601 | "PMC/PMD pairs : %d\n" | |
602 | "Counter width : %d bits\n" | |
603 | "Cycle event number : %d\n" | |
604 | "Retired event number : %d\n" | |
605 | "Implemented PMC : ", | |
606 | pm_info.pal_perf_mon_info_s.generic, pm_info.pal_perf_mon_info_s.width, | |
607 | pm_info.pal_perf_mon_info_s.cycles, pm_info.pal_perf_mon_info_s.retired); | |
608 | ||
609 | p = bitregister_process(p, pm_buffer, 256); | |
610 | p += sprintf(p, "\nImplemented PMD : "); | |
611 | p = bitregister_process(p, pm_buffer+4, 256); | |
612 | p += sprintf(p, "\nCycles count capable : "); | |
613 | p = bitregister_process(p, pm_buffer+8, 256); | |
614 | p += sprintf(p, "\nRetired bundles count capable : "); | |
615 | ||
616 | #ifdef CONFIG_ITANIUM | |
617 | /* | |
618 | * PAL_PERF_MON_INFO reports that only PMC4 can be used to count CPU_CYCLES | |
619 | * which is wrong, both PMC4 and PMD5 support it. | |
620 | */ | |
621 | if (pm_buffer[12] == 0x10) pm_buffer[12]=0x30; | |
622 | #endif | |
623 | ||
624 | p = bitregister_process(p, pm_buffer+12, 256); | |
625 | ||
626 | p += sprintf(p, "\n"); | |
627 | ||
628 | return p - page; | |
629 | } | |
630 | ||
631 | static int | |
632 | frequency_info(char *page) | |
633 | { | |
634 | char *p = page; | |
635 | struct pal_freq_ratio proc, itc, bus; | |
636 | u64 base; | |
637 | ||
638 | if (ia64_pal_freq_base(&base) == -1) | |
639 | p += sprintf(p, "Output clock : not implemented\n"); | |
640 | else | |
641 | p += sprintf(p, "Output clock : %ld ticks/s\n", base); | |
642 | ||
643 | if (ia64_pal_freq_ratios(&proc, &bus, &itc) != 0) return 0; | |
644 | ||
645 | p += sprintf(p, | |
646 | "Processor/Clock ratio : %ld/%ld\n" | |
647 | "Bus/Clock ratio : %ld/%ld\n" | |
648 | "ITC/Clock ratio : %ld/%ld\n", | |
649 | proc.num, proc.den, bus.num, bus.den, itc.num, itc.den); | |
650 | ||
651 | return p - page; | |
652 | } | |
653 | ||
654 | static int | |
655 | tr_info(char *page) | |
656 | { | |
657 | char *p = page; | |
658 | s64 status; | |
659 | pal_tr_valid_u_t tr_valid; | |
660 | u64 tr_buffer[4]; | |
661 | pal_vm_info_1_u_t vm_info_1; | |
662 | pal_vm_info_2_u_t vm_info_2; | |
663 | u64 i, j; | |
664 | u64 max[3], pgm; | |
665 | struct ifa_reg { | |
666 | u64 valid:1; | |
667 | u64 ig:11; | |
668 | u64 vpn:52; | |
669 | } *ifa_reg; | |
670 | struct itir_reg { | |
671 | u64 rv1:2; | |
672 | u64 ps:6; | |
673 | u64 key:24; | |
674 | u64 rv2:32; | |
675 | } *itir_reg; | |
676 | struct gr_reg { | |
677 | u64 p:1; | |
678 | u64 rv1:1; | |
679 | u64 ma:3; | |
680 | u64 a:1; | |
681 | u64 d:1; | |
682 | u64 pl:2; | |
683 | u64 ar:3; | |
684 | u64 ppn:38; | |
685 | u64 rv2:2; | |
686 | u64 ed:1; | |
687 | u64 ig:11; | |
688 | } *gr_reg; | |
689 | struct rid_reg { | |
690 | u64 ig1:1; | |
691 | u64 rv1:1; | |
692 | u64 ig2:6; | |
693 | u64 rid:24; | |
694 | u64 rv2:32; | |
695 | } *rid_reg; | |
696 | ||
697 | if ((status = ia64_pal_vm_summary(&vm_info_1, &vm_info_2)) !=0) { | |
698 | printk(KERN_ERR "ia64_pal_vm_summary=%ld\n", status); | |
699 | return 0; | |
700 | } | |
701 | max[0] = vm_info_1.pal_vm_info_1_s.max_itr_entry+1; | |
702 | max[1] = vm_info_1.pal_vm_info_1_s.max_dtr_entry+1; | |
703 | ||
704 | for (i=0; i < 2; i++ ) { | |
705 | for (j=0; j < max[i]; j++) { | |
706 | ||
707 | status = ia64_pal_tr_read(j, i, tr_buffer, &tr_valid); | |
708 | if (status != 0) { | |
709 | printk(KERN_ERR "palinfo: pal call failed on tr[%lu:%lu]=%ld\n", | |
710 | i, j, status); | |
711 | continue; | |
712 | } | |
713 | ||
714 | ifa_reg = (struct ifa_reg *)&tr_buffer[2]; | |
715 | ||
716 | if (ifa_reg->valid == 0) continue; | |
717 | ||
718 | gr_reg = (struct gr_reg *)tr_buffer; | |
719 | itir_reg = (struct itir_reg *)&tr_buffer[1]; | |
720 | rid_reg = (struct rid_reg *)&tr_buffer[3]; | |
721 | ||
722 | pgm = -1 << (itir_reg->ps - 12); | |
723 | p += sprintf(p, | |
724 | "%cTR%lu: av=%d pv=%d dv=%d mv=%d\n" | |
725 | "\tppn : 0x%lx\n" | |
726 | "\tvpn : 0x%lx\n" | |
727 | "\tps : ", | |
728 | "ID"[i], j, | |
729 | tr_valid.pal_tr_valid_s.access_rights_valid, | |
730 | tr_valid.pal_tr_valid_s.priv_level_valid, | |
731 | tr_valid.pal_tr_valid_s.dirty_bit_valid, | |
732 | tr_valid.pal_tr_valid_s.mem_attr_valid, | |
733 | (gr_reg->ppn & pgm)<< 12, (ifa_reg->vpn & pgm)<< 12); | |
734 | ||
735 | p = bitvector_process(p, 1<< itir_reg->ps); | |
736 | ||
737 | p += sprintf(p, | |
738 | "\n\tpl : %d\n" | |
739 | "\tar : %d\n" | |
740 | "\trid : %x\n" | |
741 | "\tp : %d\n" | |
742 | "\tma : %d\n" | |
743 | "\td : %d\n", | |
744 | gr_reg->pl, gr_reg->ar, rid_reg->rid, gr_reg->p, gr_reg->ma, | |
745 | gr_reg->d); | |
746 | } | |
747 | } | |
748 | return p - page; | |
749 | } | |
750 | ||
751 | ||
752 | ||
753 | /* | |
754 | * List {name,function} pairs for every entry in /proc/palinfo/cpu* | |
755 | */ | |
756 | static palinfo_entry_t palinfo_entries[]={ | |
757 | { "version_info", version_info, }, | |
758 | { "vm_info", vm_info, }, | |
759 | { "cache_info", cache_info, }, | |
760 | { "power_info", power_info, }, | |
761 | { "register_info", register_info, }, | |
762 | { "processor_info", processor_info, }, | |
763 | { "perfmon_info", perfmon_info, }, | |
764 | { "frequency_info", frequency_info, }, | |
765 | { "bus_info", bus_info }, | |
766 | { "tr_info", tr_info, } | |
767 | }; | |
768 | ||
769 | #define NR_PALINFO_ENTRIES (int) ARRAY_SIZE(palinfo_entries) | |
770 | ||
771 | /* | |
772 | * this array is used to keep track of the proc entries we create. This is | |
773 | * required in the module mode when we need to remove all entries. The procfs code | |
774 | * does not do recursion of deletion | |
775 | * | |
776 | * Notes: | |
777 | * - +1 accounts for the cpuN directory entry in /proc/pal | |
778 | */ | |
779 | #define NR_PALINFO_PROC_ENTRIES (NR_CPUS*(NR_PALINFO_ENTRIES+1)) | |
780 | ||
781 | static struct proc_dir_entry *palinfo_proc_entries[NR_PALINFO_PROC_ENTRIES]; | |
782 | static struct proc_dir_entry *palinfo_dir; | |
783 | ||
784 | /* | |
785 | * This data structure is used to pass which cpu,function is being requested | |
786 | * It must fit in a 64bit quantity to be passed to the proc callback routine | |
787 | * | |
788 | * In SMP mode, when we get a request for another CPU, we must call that | |
789 | * other CPU using IPI and wait for the result before returning. | |
790 | */ | |
791 | typedef union { | |
792 | u64 value; | |
793 | struct { | |
794 | unsigned req_cpu: 32; /* for which CPU this info is */ | |
795 | unsigned func_id: 32; /* which function is requested */ | |
796 | } pal_func_cpu; | |
797 | } pal_func_cpu_u_t; | |
798 | ||
799 | #define req_cpu pal_func_cpu.req_cpu | |
800 | #define func_id pal_func_cpu.func_id | |
801 | ||
802 | #ifdef CONFIG_SMP | |
803 | ||
804 | /* | |
805 | * used to hold information about final function to call | |
806 | */ | |
807 | typedef struct { | |
808 | palinfo_func_t func; /* pointer to function to call */ | |
809 | char *page; /* buffer to store results */ | |
810 | int ret; /* return value from call */ | |
811 | } palinfo_smp_data_t; | |
812 | ||
813 | ||
814 | /* | |
815 | * this function does the actual final call and he called | |
816 | * from the smp code, i.e., this is the palinfo callback routine | |
817 | */ | |
818 | static void | |
819 | palinfo_smp_call(void *info) | |
820 | { | |
821 | palinfo_smp_data_t *data = (palinfo_smp_data_t *)info; | |
822 | if (data == NULL) { | |
823 | printk(KERN_ERR "palinfo: data pointer is NULL\n"); | |
824 | data->ret = 0; /* no output */ | |
825 | return; | |
826 | } | |
827 | /* does this actual call */ | |
828 | data->ret = (*data->func)(data->page); | |
829 | } | |
830 | ||
831 | /* | |
832 | * function called to trigger the IPI, we need to access a remote CPU | |
833 | * Return: | |
834 | * 0 : error or nothing to output | |
835 | * otherwise how many bytes in the "page" buffer were written | |
836 | */ | |
837 | static | |
838 | int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page) | |
839 | { | |
840 | palinfo_smp_data_t ptr; | |
841 | int ret; | |
842 | ||
843 | ptr.func = palinfo_entries[f->func_id].proc_read; | |
844 | ptr.page = page; | |
845 | ptr.ret = 0; /* just in case */ | |
846 | ||
847 | ||
848 | /* will send IPI to other CPU and wait for completion of remote call */ | |
849 | if ((ret=smp_call_function_single(f->req_cpu, palinfo_smp_call, &ptr, 0, 1))) { | |
850 | printk(KERN_ERR "palinfo: remote CPU call from %d to %d on function %d: " | |
851 | "error %d\n", smp_processor_id(), f->req_cpu, f->func_id, ret); | |
852 | return 0; | |
853 | } | |
854 | return ptr.ret; | |
855 | } | |
856 | #else /* ! CONFIG_SMP */ | |
857 | static | |
858 | int palinfo_handle_smp(pal_func_cpu_u_t *f, char *page) | |
859 | { | |
860 | printk(KERN_ERR "palinfo: should not be called with non SMP kernel\n"); | |
861 | return 0; | |
862 | } | |
863 | #endif /* CONFIG_SMP */ | |
864 | ||
865 | /* | |
866 | * Entry point routine: all calls go through this function | |
867 | */ | |
868 | static int | |
869 | palinfo_read_entry(char *page, char **start, off_t off, int count, int *eof, void *data) | |
870 | { | |
871 | int len=0; | |
872 | pal_func_cpu_u_t *f = (pal_func_cpu_u_t *)&data; | |
873 | ||
874 | /* | |
875 | * in SMP mode, we may need to call another CPU to get correct | |
876 | * information. PAL, by definition, is processor specific | |
877 | */ | |
878 | if (f->req_cpu == get_cpu()) | |
879 | len = (*palinfo_entries[f->func_id].proc_read)(page); | |
880 | else | |
881 | len = palinfo_handle_smp(f, page); | |
882 | ||
883 | put_cpu(); | |
884 | ||
885 | if (len <= off+count) *eof = 1; | |
886 | ||
887 | *start = page + off; | |
888 | len -= off; | |
889 | ||
890 | if (len>count) len = count; | |
891 | if (len<0) len = 0; | |
892 | ||
893 | return len; | |
894 | } | |
895 | ||
896 | static void | |
897 | create_palinfo_proc_entries(unsigned int cpu) | |
898 | { | |
899 | # define CPUSTR "cpu%d" | |
900 | ||
901 | pal_func_cpu_u_t f; | |
902 | struct proc_dir_entry **pdir; | |
903 | struct proc_dir_entry *cpu_dir; | |
904 | int j; | |
905 | char cpustr[sizeof(CPUSTR)]; | |
906 | ||
907 | ||
908 | /* | |
909 | * we keep track of created entries in a depth-first order for | |
910 | * cleanup purposes. Each entry is stored into palinfo_proc_entries | |
911 | */ | |
912 | sprintf(cpustr,CPUSTR, cpu); | |
913 | ||
914 | cpu_dir = proc_mkdir(cpustr, palinfo_dir); | |
915 | ||
916 | f.req_cpu = cpu; | |
917 | ||
918 | /* | |
919 | * Compute the location to store per cpu entries | |
920 | * We dont store the top level entry in this list, but | |
921 | * remove it finally after removing all cpu entries. | |
922 | */ | |
923 | pdir = &palinfo_proc_entries[cpu*(NR_PALINFO_ENTRIES+1)]; | |
924 | *pdir++ = cpu_dir; | |
925 | for (j=0; j < NR_PALINFO_ENTRIES; j++) { | |
926 | f.func_id = j; | |
927 | *pdir = create_proc_read_entry( | |
928 | palinfo_entries[j].name, 0, cpu_dir, | |
929 | palinfo_read_entry, (void *)f.value); | |
930 | if (*pdir) | |
931 | (*pdir)->owner = THIS_MODULE; | |
932 | pdir++; | |
933 | } | |
934 | } | |
935 | ||
936 | static void | |
937 | remove_palinfo_proc_entries(unsigned int hcpu) | |
938 | { | |
939 | int j; | |
940 | struct proc_dir_entry *cpu_dir, **pdir; | |
941 | ||
942 | pdir = &palinfo_proc_entries[hcpu*(NR_PALINFO_ENTRIES+1)]; | |
943 | cpu_dir = *pdir; | |
944 | *pdir++=NULL; | |
945 | for (j=0; j < (NR_PALINFO_ENTRIES); j++) { | |
946 | if ((*pdir)) { | |
947 | remove_proc_entry ((*pdir)->name, cpu_dir); | |
948 | *pdir ++= NULL; | |
949 | } | |
950 | } | |
951 | ||
952 | if (cpu_dir) { | |
953 | remove_proc_entry(cpu_dir->name, palinfo_dir); | |
954 | } | |
955 | } | |
956 | ||
957 | static int __devinit palinfo_cpu_callback(struct notifier_block *nfb, | |
958 | unsigned long action, | |
959 | void *hcpu) | |
960 | { | |
961 | unsigned int hotcpu = (unsigned long)hcpu; | |
962 | ||
963 | switch (action) { | |
964 | case CPU_ONLINE: | |
965 | create_palinfo_proc_entries(hotcpu); | |
966 | break; | |
967 | #ifdef CONFIG_HOTPLUG_CPU | |
968 | case CPU_DEAD: | |
969 | remove_palinfo_proc_entries(hotcpu); | |
970 | break; | |
971 | #endif | |
972 | } | |
973 | return NOTIFY_OK; | |
974 | } | |
975 | ||
976 | static struct notifier_block palinfo_cpu_notifier = | |
977 | { | |
978 | .notifier_call = palinfo_cpu_callback, | |
979 | .priority = 0, | |
980 | }; | |
981 | ||
982 | static int __init | |
983 | palinfo_init(void) | |
984 | { | |
985 | int i = 0; | |
986 | ||
987 | printk(KERN_INFO "PAL Information Facility v%s\n", PALINFO_VERSION); | |
988 | palinfo_dir = proc_mkdir("pal", NULL); | |
989 | ||
990 | /* Create palinfo dirs in /proc for all online cpus */ | |
991 | for_each_online_cpu(i) { | |
992 | create_palinfo_proc_entries(i); | |
993 | } | |
994 | ||
995 | /* Register for future delivery via notify registration */ | |
996 | register_cpu_notifier(&palinfo_cpu_notifier); | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static void __exit | |
1002 | palinfo_exit(void) | |
1003 | { | |
1004 | int i = 0; | |
1005 | ||
1006 | /* remove all nodes: depth first pass. Could optimize this */ | |
1007 | for_each_online_cpu(i) { | |
1008 | remove_palinfo_proc_entries(i); | |
1009 | } | |
1010 | ||
1011 | /* | |
1012 | * Remove the top level entry finally | |
1013 | */ | |
1014 | remove_proc_entry(palinfo_dir->name, NULL); | |
1015 | ||
1016 | /* | |
1017 | * Unregister from cpu notifier callbacks | |
1018 | */ | |
1019 | unregister_cpu_notifier(&palinfo_cpu_notifier); | |
1020 | } | |
1021 | ||
1022 | module_init(palinfo_init); | |
1023 | module_exit(palinfo_exit); |