Commit | Line | Data |
---|---|---|
24bbb1fa | 1 | /* |
f19bfb2c | 2 | * arch/s390/hypfs/hypfs_diag.c |
24bbb1fa MH |
3 | * Hypervisor filesystem for Linux on s390. Diag 204 and 224 |
4 | * implementation. | |
5 | * | |
6 | * Copyright (C) IBM Corp. 2006 | |
7 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> | |
8 | */ | |
9 | ||
10 | #include <linux/types.h> | |
11 | #include <linux/errno.h> | |
12 | #include <linux/string.h> | |
13 | #include <linux/vmalloc.h> | |
14 | #include <asm/ebcdic.h> | |
15 | #include "hypfs.h" | |
16 | ||
17 | #define LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */ | |
18 | #define CPU_NAME_LEN 16 /* type name len of cpus in diag224 name table */ | |
19 | #define TMP_SIZE 64 /* size of temporary buffers */ | |
20 | ||
21 | /* diag 204 subcodes */ | |
22 | enum diag204_sc { | |
23 | SUBC_STIB4 = 4, | |
24 | SUBC_RSI = 5, | |
25 | SUBC_STIB6 = 6, | |
26 | SUBC_STIB7 = 7 | |
27 | }; | |
28 | ||
29 | /* The two available diag 204 data formats */ | |
30 | enum diag204_format { | |
31 | INFO_SIMPLE = 0, | |
32 | INFO_EXT = 0x00010000 | |
33 | }; | |
34 | ||
35 | /* bit is set in flags, when physical cpu info is included in diag 204 data */ | |
36 | #define LPAR_PHYS_FLG 0x80 | |
37 | ||
38 | static char *diag224_cpu_names; /* diag 224 name table */ | |
39 | static enum diag204_sc diag204_store_sc; /* used subcode for store */ | |
40 | static enum diag204_format diag204_info_type; /* used diag 204 data format */ | |
41 | ||
42 | static void *diag204_buf; /* 4K aligned buffer for diag204 data */ | |
43 | static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */ | |
44 | static int diag204_buf_pages; /* number of pages for diag204 data */ | |
45 | ||
46 | /* | |
47 | * DIAG 204 data structures and member access functions. | |
48 | * | |
49 | * Since we have two different diag 204 data formats for old and new s390 | |
50 | * machines, we do not access the structs directly, but use getter functions for | |
51 | * each struct member instead. This should make the code more readable. | |
52 | */ | |
53 | ||
54 | /* Time information block */ | |
55 | ||
56 | struct info_blk_hdr { | |
57 | __u8 npar; | |
58 | __u8 flags; | |
59 | __u16 tslice; | |
60 | __u16 phys_cpus; | |
61 | __u16 this_part; | |
62 | __u64 curtod; | |
63 | } __attribute__ ((packed)); | |
64 | ||
65 | struct x_info_blk_hdr { | |
66 | __u8 npar; | |
67 | __u8 flags; | |
68 | __u16 tslice; | |
69 | __u16 phys_cpus; | |
70 | __u16 this_part; | |
71 | __u64 curtod1; | |
72 | __u64 curtod2; | |
73 | char reserved[40]; | |
74 | } __attribute__ ((packed)); | |
75 | ||
76 | static inline int info_blk_hdr__size(enum diag204_format type) | |
77 | { | |
78 | if (type == INFO_SIMPLE) | |
79 | return sizeof(struct info_blk_hdr); | |
80 | else /* INFO_EXT */ | |
81 | return sizeof(struct x_info_blk_hdr); | |
82 | } | |
83 | ||
84 | static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr) | |
85 | { | |
86 | if (type == INFO_SIMPLE) | |
87 | return ((struct info_blk_hdr *)hdr)->npar; | |
88 | else /* INFO_EXT */ | |
89 | return ((struct x_info_blk_hdr *)hdr)->npar; | |
90 | } | |
91 | ||
92 | static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr) | |
93 | { | |
94 | if (type == INFO_SIMPLE) | |
95 | return ((struct info_blk_hdr *)hdr)->flags; | |
96 | else /* INFO_EXT */ | |
97 | return ((struct x_info_blk_hdr *)hdr)->flags; | |
98 | } | |
99 | ||
100 | static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr) | |
101 | { | |
102 | if (type == INFO_SIMPLE) | |
103 | return ((struct info_blk_hdr *)hdr)->phys_cpus; | |
104 | else /* INFO_EXT */ | |
105 | return ((struct x_info_blk_hdr *)hdr)->phys_cpus; | |
106 | } | |
107 | ||
108 | /* Partition header */ | |
109 | ||
110 | struct part_hdr { | |
111 | __u8 pn; | |
112 | __u8 cpus; | |
113 | char reserved[6]; | |
114 | char part_name[LPAR_NAME_LEN]; | |
115 | } __attribute__ ((packed)); | |
116 | ||
117 | struct x_part_hdr { | |
118 | __u8 pn; | |
119 | __u8 cpus; | |
120 | __u8 rcpus; | |
121 | __u8 pflag; | |
122 | __u32 mlu; | |
123 | char part_name[LPAR_NAME_LEN]; | |
124 | char lpc_name[8]; | |
125 | char os_name[8]; | |
126 | __u64 online_cs; | |
127 | __u64 online_es; | |
128 | __u8 upid; | |
129 | char reserved1[3]; | |
130 | __u32 group_mlu; | |
131 | char group_name[8]; | |
132 | char reserved2[32]; | |
133 | } __attribute__ ((packed)); | |
134 | ||
135 | static inline int part_hdr__size(enum diag204_format type) | |
136 | { | |
137 | if (type == INFO_SIMPLE) | |
138 | return sizeof(struct part_hdr); | |
139 | else /* INFO_EXT */ | |
140 | return sizeof(struct x_part_hdr); | |
141 | } | |
142 | ||
143 | static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr) | |
144 | { | |
145 | if (type == INFO_SIMPLE) | |
146 | return ((struct part_hdr *)hdr)->cpus; | |
147 | else /* INFO_EXT */ | |
148 | return ((struct x_part_hdr *)hdr)->rcpus; | |
149 | } | |
150 | ||
151 | static inline void part_hdr__part_name(enum diag204_format type, void *hdr, | |
152 | char *name) | |
153 | { | |
154 | if (type == INFO_SIMPLE) | |
155 | memcpy(name, ((struct part_hdr *)hdr)->part_name, | |
156 | LPAR_NAME_LEN); | |
157 | else /* INFO_EXT */ | |
158 | memcpy(name, ((struct x_part_hdr *)hdr)->part_name, | |
159 | LPAR_NAME_LEN); | |
160 | EBCASC(name, LPAR_NAME_LEN); | |
161 | name[LPAR_NAME_LEN] = 0; | |
162 | strstrip(name); | |
163 | } | |
164 | ||
165 | struct cpu_info { | |
166 | __u16 cpu_addr; | |
167 | char reserved1[2]; | |
168 | __u8 ctidx; | |
169 | __u8 cflag; | |
170 | __u16 weight; | |
171 | __u64 acc_time; | |
172 | __u64 lp_time; | |
173 | } __attribute__ ((packed)); | |
174 | ||
175 | struct x_cpu_info { | |
176 | __u16 cpu_addr; | |
177 | char reserved1[2]; | |
178 | __u8 ctidx; | |
179 | __u8 cflag; | |
180 | __u16 weight; | |
181 | __u64 acc_time; | |
182 | __u64 lp_time; | |
183 | __u16 min_weight; | |
184 | __u16 cur_weight; | |
185 | __u16 max_weight; | |
186 | char reseved2[2]; | |
187 | __u64 online_time; | |
188 | __u64 wait_time; | |
189 | __u32 pma_weight; | |
190 | __u32 polar_weight; | |
191 | char reserved3[40]; | |
192 | } __attribute__ ((packed)); | |
193 | ||
194 | /* CPU info block */ | |
195 | ||
196 | static inline int cpu_info__size(enum diag204_format type) | |
197 | { | |
198 | if (type == INFO_SIMPLE) | |
199 | return sizeof(struct cpu_info); | |
200 | else /* INFO_EXT */ | |
201 | return sizeof(struct x_cpu_info); | |
202 | } | |
203 | ||
204 | static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr) | |
205 | { | |
206 | if (type == INFO_SIMPLE) | |
207 | return ((struct cpu_info *)hdr)->ctidx; | |
208 | else /* INFO_EXT */ | |
209 | return ((struct x_cpu_info *)hdr)->ctidx; | |
210 | } | |
211 | ||
212 | static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr) | |
213 | { | |
214 | if (type == INFO_SIMPLE) | |
215 | return ((struct cpu_info *)hdr)->cpu_addr; | |
216 | else /* INFO_EXT */ | |
217 | return ((struct x_cpu_info *)hdr)->cpu_addr; | |
218 | } | |
219 | ||
220 | static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr) | |
221 | { | |
222 | if (type == INFO_SIMPLE) | |
223 | return ((struct cpu_info *)hdr)->acc_time; | |
224 | else /* INFO_EXT */ | |
225 | return ((struct x_cpu_info *)hdr)->acc_time; | |
226 | } | |
227 | ||
228 | static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr) | |
229 | { | |
230 | if (type == INFO_SIMPLE) | |
231 | return ((struct cpu_info *)hdr)->lp_time; | |
232 | else /* INFO_EXT */ | |
233 | return ((struct x_cpu_info *)hdr)->lp_time; | |
234 | } | |
235 | ||
236 | static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr) | |
237 | { | |
238 | if (type == INFO_SIMPLE) | |
239 | return 0; /* online_time not available in simple info */ | |
240 | else /* INFO_EXT */ | |
241 | return ((struct x_cpu_info *)hdr)->online_time; | |
242 | } | |
243 | ||
244 | /* Physical header */ | |
245 | ||
246 | struct phys_hdr { | |
247 | char reserved1[1]; | |
248 | __u8 cpus; | |
249 | char reserved2[6]; | |
250 | char mgm_name[8]; | |
251 | } __attribute__ ((packed)); | |
252 | ||
253 | struct x_phys_hdr { | |
254 | char reserved1[1]; | |
255 | __u8 cpus; | |
256 | char reserved2[6]; | |
257 | char mgm_name[8]; | |
258 | char reserved3[80]; | |
259 | } __attribute__ ((packed)); | |
260 | ||
261 | static inline int phys_hdr__size(enum diag204_format type) | |
262 | { | |
263 | if (type == INFO_SIMPLE) | |
264 | return sizeof(struct phys_hdr); | |
265 | else /* INFO_EXT */ | |
266 | return sizeof(struct x_phys_hdr); | |
267 | } | |
268 | ||
269 | static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr) | |
270 | { | |
271 | if (type == INFO_SIMPLE) | |
272 | return ((struct phys_hdr *)hdr)->cpus; | |
273 | else /* INFO_EXT */ | |
274 | return ((struct x_phys_hdr *)hdr)->cpus; | |
275 | } | |
276 | ||
277 | /* Physical CPU info block */ | |
278 | ||
279 | struct phys_cpu { | |
280 | __u16 cpu_addr; | |
281 | char reserved1[2]; | |
282 | __u8 ctidx; | |
283 | char reserved2[3]; | |
284 | __u64 mgm_time; | |
285 | char reserved3[8]; | |
286 | } __attribute__ ((packed)); | |
287 | ||
288 | struct x_phys_cpu { | |
289 | __u16 cpu_addr; | |
290 | char reserved1[2]; | |
291 | __u8 ctidx; | |
292 | char reserved2[3]; | |
293 | __u64 mgm_time; | |
294 | char reserved3[80]; | |
295 | } __attribute__ ((packed)); | |
296 | ||
297 | static inline int phys_cpu__size(enum diag204_format type) | |
298 | { | |
299 | if (type == INFO_SIMPLE) | |
300 | return sizeof(struct phys_cpu); | |
301 | else /* INFO_EXT */ | |
302 | return sizeof(struct x_phys_cpu); | |
303 | } | |
304 | ||
305 | static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr) | |
306 | { | |
307 | if (type == INFO_SIMPLE) | |
308 | return ((struct phys_cpu *)hdr)->cpu_addr; | |
309 | else /* INFO_EXT */ | |
310 | return ((struct x_phys_cpu *)hdr)->cpu_addr; | |
311 | } | |
312 | ||
313 | static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr) | |
314 | { | |
315 | if (type == INFO_SIMPLE) | |
316 | return ((struct phys_cpu *)hdr)->mgm_time; | |
317 | else /* INFO_EXT */ | |
318 | return ((struct x_phys_cpu *)hdr)->mgm_time; | |
319 | } | |
320 | ||
321 | static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr) | |
322 | { | |
323 | if (type == INFO_SIMPLE) | |
324 | return ((struct phys_cpu *)hdr)->ctidx; | |
325 | else /* INFO_EXT */ | |
326 | return ((struct x_phys_cpu *)hdr)->ctidx; | |
327 | } | |
328 | ||
329 | /* Diagnose 204 functions */ | |
330 | ||
331 | static int diag204(unsigned long subcode, unsigned long size, void *addr) | |
332 | { | |
333 | register unsigned long _subcode asm("0") = subcode; | |
334 | register unsigned long _size asm("1") = size; | |
335 | ||
94c12cc7 MS |
336 | asm volatile( |
337 | " diag %2,%0,0x204\n" | |
338 | "0:\n" | |
339 | EX_TABLE(0b,0b) | |
340 | : "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory"); | |
24bbb1fa MH |
341 | if (_subcode) |
342 | return -1; | |
94c12cc7 | 343 | return _size; |
24bbb1fa MH |
344 | } |
345 | ||
346 | /* | |
347 | * For the old diag subcode 4 with simple data format we have to use real | |
348 | * memory. If we use subcode 6 or 7 with extended data format, we can (and | |
349 | * should) use vmalloc, since we need a lot of memory in that case. Currently | |
350 | * up to 93 pages! | |
351 | */ | |
352 | ||
353 | static void diag204_free_buffer(void) | |
354 | { | |
355 | if (!diag204_buf) | |
356 | return; | |
357 | if (diag204_buf_vmalloc) { | |
358 | vfree(diag204_buf_vmalloc); | |
359 | diag204_buf_vmalloc = NULL; | |
360 | } else { | |
361 | free_pages((unsigned long) diag204_buf, 0); | |
362 | } | |
363 | diag204_buf_pages = 0; | |
364 | diag204_buf = NULL; | |
365 | } | |
366 | ||
367 | static void *diag204_alloc_vbuf(int pages) | |
368 | { | |
369 | /* The buffer has to be page aligned! */ | |
370 | diag204_buf_vmalloc = vmalloc(PAGE_SIZE * (pages + 1)); | |
371 | if (!diag204_buf_vmalloc) | |
372 | return ERR_PTR(-ENOMEM); | |
373 | diag204_buf = (void*)((unsigned long)diag204_buf_vmalloc | |
374 | & ~0xfffUL) + 0x1000; | |
375 | diag204_buf_pages = pages; | |
376 | return diag204_buf; | |
377 | } | |
378 | ||
379 | static void *diag204_alloc_rbuf(void) | |
380 | { | |
381 | diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0); | |
86b22470 | 382 | if (!diag204_buf) |
24bbb1fa MH |
383 | return ERR_PTR(-ENOMEM); |
384 | diag204_buf_pages = 1; | |
385 | return diag204_buf; | |
386 | } | |
387 | ||
388 | static void *diag204_get_buffer(enum diag204_format fmt, int *pages) | |
389 | { | |
390 | if (diag204_buf) { | |
391 | *pages = diag204_buf_pages; | |
392 | return diag204_buf; | |
393 | } | |
394 | if (fmt == INFO_SIMPLE) { | |
395 | *pages = 1; | |
396 | return diag204_alloc_rbuf(); | |
397 | } else {/* INFO_EXT */ | |
23c100d9 MH |
398 | *pages = diag204((unsigned long)SUBC_RSI | |
399 | (unsigned long)INFO_EXT, 0, NULL); | |
24bbb1fa MH |
400 | if (*pages <= 0) |
401 | return ERR_PTR(-ENOSYS); | |
402 | else | |
403 | return diag204_alloc_vbuf(*pages); | |
404 | } | |
405 | } | |
406 | ||
407 | /* | |
408 | * diag204_probe() has to find out, which type of diagnose 204 implementation | |
409 | * we have on our machine. Currently there are three possible scanarios: | |
410 | * - subcode 4 + simple data format (only one page) | |
411 | * - subcode 4-6 + extended data format | |
412 | * - subcode 4-7 + extended data format | |
413 | * | |
414 | * Subcode 5 is used to retrieve the size of the data, provided by subcodes | |
415 | * 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition | |
416 | * to subcode 6 it provides also information about secondary cpus. | |
417 | * In order to get as much information as possible, we first try | |
418 | * subcode 7, then 6 and if both fail, we use subcode 4. | |
419 | */ | |
420 | ||
421 | static int diag204_probe(void) | |
422 | { | |
423 | void *buf; | |
424 | int pages, rc; | |
425 | ||
426 | buf = diag204_get_buffer(INFO_EXT, &pages); | |
427 | if (!IS_ERR(buf)) { | |
331c982d MH |
428 | if (diag204((unsigned long)SUBC_STIB7 | |
429 | (unsigned long)INFO_EXT, pages, buf) >= 0) { | |
24bbb1fa MH |
430 | diag204_store_sc = SUBC_STIB7; |
431 | diag204_info_type = INFO_EXT; | |
432 | goto out; | |
433 | } | |
331c982d MH |
434 | if (diag204((unsigned long)SUBC_STIB6 | |
435 | (unsigned long)INFO_EXT, pages, buf) >= 0) { | |
24bbb1fa MH |
436 | diag204_store_sc = SUBC_STIB7; |
437 | diag204_info_type = INFO_EXT; | |
438 | goto out; | |
439 | } | |
440 | diag204_free_buffer(); | |
441 | } | |
442 | ||
443 | /* subcodes 6 and 7 failed, now try subcode 4 */ | |
444 | ||
445 | buf = diag204_get_buffer(INFO_SIMPLE, &pages); | |
446 | if (IS_ERR(buf)) { | |
447 | rc = PTR_ERR(buf); | |
448 | goto fail_alloc; | |
449 | } | |
331c982d MH |
450 | if (diag204((unsigned long)SUBC_STIB4 | |
451 | (unsigned long)INFO_SIMPLE, pages, buf) >= 0) { | |
24bbb1fa MH |
452 | diag204_store_sc = SUBC_STIB4; |
453 | diag204_info_type = INFO_SIMPLE; | |
454 | goto out; | |
455 | } else { | |
456 | rc = -ENOSYS; | |
457 | goto fail_store; | |
458 | } | |
459 | out: | |
460 | rc = 0; | |
461 | fail_store: | |
462 | diag204_free_buffer(); | |
463 | fail_alloc: | |
464 | return rc; | |
465 | } | |
466 | ||
467 | static void *diag204_store(void) | |
468 | { | |
469 | void *buf; | |
470 | int pages; | |
471 | ||
472 | buf = diag204_get_buffer(diag204_info_type, &pages); | |
473 | if (IS_ERR(buf)) | |
474 | goto out; | |
331c982d MH |
475 | if (diag204((unsigned long)diag204_store_sc | |
476 | (unsigned long)diag204_info_type, pages, buf) < 0) | |
24bbb1fa MH |
477 | return ERR_PTR(-ENOSYS); |
478 | out: | |
479 | return buf; | |
480 | } | |
481 | ||
482 | /* Diagnose 224 functions */ | |
483 | ||
c41d4e3e | 484 | static int diag224(void *ptr) |
24bbb1fa | 485 | { |
c41d4e3e MH |
486 | int rc = -ENOTSUPP; |
487 | ||
488 | asm volatile( | |
489 | " diag %1,%2,0x224\n" | |
490 | "0: lhi %0,0x0\n" | |
491 | "1:\n" | |
492 | EX_TABLE(0b,1b) | |
493 | : "+d" (rc) :"d" (0), "d" (ptr) : "memory"); | |
494 | return rc; | |
24bbb1fa MH |
495 | } |
496 | ||
497 | static int diag224_get_name_table(void) | |
498 | { | |
499 | /* memory must be below 2GB */ | |
500 | diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA); | |
501 | if (!diag224_cpu_names) | |
502 | return -ENOMEM; | |
c41d4e3e MH |
503 | if (diag224(diag224_cpu_names)) { |
504 | kfree(diag224_cpu_names); | |
505 | return -ENOTSUPP; | |
506 | } | |
24bbb1fa MH |
507 | EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16); |
508 | return 0; | |
509 | } | |
510 | ||
511 | static void diag224_delete_name_table(void) | |
512 | { | |
513 | kfree(diag224_cpu_names); | |
514 | } | |
515 | ||
516 | static int diag224_idx2name(int index, char *name) | |
517 | { | |
518 | memcpy(name, diag224_cpu_names + ((index + 1) * CPU_NAME_LEN), | |
519 | CPU_NAME_LEN); | |
520 | name[CPU_NAME_LEN] = 0; | |
521 | strstrip(name); | |
522 | return 0; | |
523 | } | |
524 | ||
525 | __init int hypfs_diag_init(void) | |
526 | { | |
527 | int rc; | |
528 | ||
529 | if (diag204_probe()) { | |
530 | printk(KERN_ERR "hypfs: diag 204 not working."); | |
531 | return -ENODATA; | |
532 | } | |
533 | rc = diag224_get_name_table(); | |
534 | if (rc) { | |
86b22470 | 535 | diag204_free_buffer(); |
24bbb1fa MH |
536 | printk(KERN_ERR "hypfs: could not get name table.\n"); |
537 | } | |
538 | return rc; | |
539 | } | |
540 | ||
1375fc1f | 541 | void hypfs_diag_exit(void) |
24bbb1fa MH |
542 | { |
543 | diag224_delete_name_table(); | |
544 | diag204_free_buffer(); | |
545 | } | |
546 | ||
547 | /* | |
548 | * Functions to create the directory structure | |
549 | * ******************************************* | |
550 | */ | |
551 | ||
552 | static int hypfs_create_cpu_files(struct super_block *sb, | |
553 | struct dentry *cpus_dir, void *cpu_info) | |
554 | { | |
555 | struct dentry *cpu_dir; | |
556 | char buffer[TMP_SIZE]; | |
557 | void *rc; | |
558 | ||
559 | snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type, | |
560 | cpu_info)); | |
561 | cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer); | |
562 | rc = hypfs_create_u64(sb, cpu_dir, "mgmtime", | |
563 | cpu_info__acc_time(diag204_info_type, cpu_info) - | |
564 | cpu_info__lp_time(diag204_info_type, cpu_info)); | |
565 | if (IS_ERR(rc)) | |
566 | return PTR_ERR(rc); | |
567 | rc = hypfs_create_u64(sb, cpu_dir, "cputime", | |
568 | cpu_info__lp_time(diag204_info_type, cpu_info)); | |
569 | if (IS_ERR(rc)) | |
570 | return PTR_ERR(rc); | |
571 | if (diag204_info_type == INFO_EXT) { | |
572 | rc = hypfs_create_u64(sb, cpu_dir, "onlinetime", | |
573 | cpu_info__online_time(diag204_info_type, | |
574 | cpu_info)); | |
575 | if (IS_ERR(rc)) | |
576 | return PTR_ERR(rc); | |
577 | } | |
578 | diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer); | |
579 | rc = hypfs_create_str(sb, cpu_dir, "type", buffer); | |
580 | if (IS_ERR(rc)) | |
581 | return PTR_ERR(rc); | |
582 | return 0; | |
583 | } | |
584 | ||
585 | static void *hypfs_create_lpar_files(struct super_block *sb, | |
586 | struct dentry *systems_dir, void *part_hdr) | |
587 | { | |
588 | struct dentry *cpus_dir; | |
589 | struct dentry *lpar_dir; | |
590 | char lpar_name[LPAR_NAME_LEN + 1]; | |
591 | void *cpu_info; | |
592 | int i; | |
593 | ||
594 | part_hdr__part_name(diag204_info_type, part_hdr, lpar_name); | |
595 | lpar_name[LPAR_NAME_LEN] = 0; | |
596 | lpar_dir = hypfs_mkdir(sb, systems_dir, lpar_name); | |
597 | if (IS_ERR(lpar_dir)) | |
598 | return lpar_dir; | |
599 | cpus_dir = hypfs_mkdir(sb, lpar_dir, "cpus"); | |
600 | if (IS_ERR(cpus_dir)) | |
601 | return cpus_dir; | |
602 | cpu_info = part_hdr + part_hdr__size(diag204_info_type); | |
603 | for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) { | |
604 | int rc; | |
605 | rc = hypfs_create_cpu_files(sb, cpus_dir, cpu_info); | |
606 | if (rc) | |
607 | return ERR_PTR(rc); | |
608 | cpu_info += cpu_info__size(diag204_info_type); | |
609 | } | |
610 | return cpu_info; | |
611 | } | |
612 | ||
613 | static int hypfs_create_phys_cpu_files(struct super_block *sb, | |
614 | struct dentry *cpus_dir, void *cpu_info) | |
615 | { | |
616 | struct dentry *cpu_dir; | |
617 | char buffer[TMP_SIZE]; | |
618 | void *rc; | |
619 | ||
620 | snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type, | |
621 | cpu_info)); | |
622 | cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer); | |
623 | if (IS_ERR(cpu_dir)) | |
624 | return PTR_ERR(cpu_dir); | |
625 | rc = hypfs_create_u64(sb, cpu_dir, "mgmtime", | |
626 | phys_cpu__mgm_time(diag204_info_type, cpu_info)); | |
627 | if (IS_ERR(rc)) | |
628 | return PTR_ERR(rc); | |
629 | diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer); | |
630 | rc = hypfs_create_str(sb, cpu_dir, "type", buffer); | |
631 | if (IS_ERR(rc)) | |
632 | return PTR_ERR(rc); | |
633 | return 0; | |
634 | } | |
635 | ||
636 | static void *hypfs_create_phys_files(struct super_block *sb, | |
637 | struct dentry *parent_dir, void *phys_hdr) | |
638 | { | |
639 | int i; | |
640 | void *cpu_info; | |
641 | struct dentry *cpus_dir; | |
642 | ||
643 | cpus_dir = hypfs_mkdir(sb, parent_dir, "cpus"); | |
644 | if (IS_ERR(cpus_dir)) | |
645 | return cpus_dir; | |
646 | cpu_info = phys_hdr + phys_hdr__size(diag204_info_type); | |
647 | for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) { | |
648 | int rc; | |
649 | rc = hypfs_create_phys_cpu_files(sb, cpus_dir, cpu_info); | |
650 | if (rc) | |
651 | return ERR_PTR(rc); | |
652 | cpu_info += phys_cpu__size(diag204_info_type); | |
653 | } | |
654 | return cpu_info; | |
655 | } | |
656 | ||
657 | int hypfs_diag_create_files(struct super_block *sb, struct dentry *root) | |
658 | { | |
659 | struct dentry *systems_dir, *hyp_dir; | |
660 | void *time_hdr, *part_hdr; | |
661 | int i, rc; | |
662 | void *buffer, *ptr; | |
663 | ||
664 | buffer = diag204_store(); | |
665 | if (IS_ERR(buffer)) | |
666 | return PTR_ERR(buffer); | |
667 | ||
668 | systems_dir = hypfs_mkdir(sb, root, "systems"); | |
669 | if (IS_ERR(systems_dir)) { | |
670 | rc = PTR_ERR(systems_dir); | |
671 | goto err_out; | |
672 | } | |
673 | time_hdr = (struct x_info_blk_hdr *)buffer; | |
674 | part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type); | |
675 | for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) { | |
676 | part_hdr = hypfs_create_lpar_files(sb, systems_dir, part_hdr); | |
677 | if (IS_ERR(part_hdr)) { | |
678 | rc = PTR_ERR(part_hdr); | |
679 | goto err_out; | |
680 | } | |
681 | } | |
682 | if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) { | |
683 | ptr = hypfs_create_phys_files(sb, root, part_hdr); | |
684 | if (IS_ERR(ptr)) { | |
685 | rc = PTR_ERR(ptr); | |
686 | goto err_out; | |
687 | } | |
688 | } | |
689 | hyp_dir = hypfs_mkdir(sb, root, "hyp"); | |
690 | if (IS_ERR(hyp_dir)) { | |
691 | rc = PTR_ERR(hyp_dir); | |
692 | goto err_out; | |
693 | } | |
694 | ptr = hypfs_create_str(sb, hyp_dir, "type", "LPAR Hypervisor"); | |
695 | if (IS_ERR(ptr)) { | |
696 | rc = PTR_ERR(ptr); | |
697 | goto err_out; | |
698 | } | |
699 | rc = 0; | |
700 | ||
701 | err_out: | |
702 | return rc; | |
703 | } |