Commit | Line | Data |
---|---|---|
24bbb1fa | 1 | /* |
24bbb1fa MH |
2 | * Hypervisor filesystem for Linux on s390. Diag 204 and 224 |
3 | * implementation. | |
4 | * | |
f55495ba | 5 | * Copyright IBM Corp. 2006, 2008 |
24bbb1fa MH |
6 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
7 | */ | |
8 | ||
f55495ba MH |
9 | #define KMSG_COMPONENT "hypfs" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
24bbb1fa MH |
12 | #include <linux/types.h> |
13 | #include <linux/errno.h> | |
33b26d79 | 14 | #include <linux/slab.h> |
24bbb1fa MH |
15 | #include <linux/string.h> |
16 | #include <linux/vmalloc.h> | |
57b28f66 | 17 | #include <linux/mm.h> |
1ec2772e | 18 | #include <asm/diag.h> |
24bbb1fa MH |
19 | #include <asm/ebcdic.h> |
20 | #include "hypfs.h" | |
21 | ||
24bbb1fa MH |
22 | #define TMP_SIZE 64 /* size of temporary buffers */ |
23 | ||
57b28f66 MH |
24 | #define DBFS_D204_HDR_VERSION 0 |
25 | ||
24bbb1fa MH |
26 | static char *diag224_cpu_names; /* diag 224 name table */ |
27 | static enum diag204_sc diag204_store_sc; /* used subcode for store */ | |
28 | static enum diag204_format diag204_info_type; /* used diag 204 data format */ | |
29 | ||
30 | static void *diag204_buf; /* 4K aligned buffer for diag204 data */ | |
31 | static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */ | |
32 | static int diag204_buf_pages; /* number of pages for diag204 data */ | |
33 | ||
57b28f66 MH |
34 | static struct dentry *dbfs_d204_file; |
35 | ||
24bbb1fa | 36 | /* |
e65f30e0 | 37 | * DIAG 204 member access functions. |
24bbb1fa MH |
38 | * |
39 | * Since we have two different diag 204 data formats for old and new s390 | |
40 | * machines, we do not access the structs directly, but use getter functions for | |
41 | * each struct member instead. This should make the code more readable. | |
42 | */ | |
43 | ||
44 | /* Time information block */ | |
45 | ||
24bbb1fa MH |
46 | static inline int info_blk_hdr__size(enum diag204_format type) |
47 | { | |
e65f30e0 JF |
48 | if (type == DIAG204_INFO_SIMPLE) |
49 | return sizeof(struct diag204_info_blk_hdr); | |
50 | else /* DIAG204_INFO_EXT */ | |
51 | return sizeof(struct diag204_x_info_blk_hdr); | |
24bbb1fa MH |
52 | } |
53 | ||
54 | static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr) | |
55 | { | |
e65f30e0 JF |
56 | if (type == DIAG204_INFO_SIMPLE) |
57 | return ((struct diag204_info_blk_hdr *)hdr)->npar; | |
58 | else /* DIAG204_INFO_EXT */ | |
59 | return ((struct diag204_x_info_blk_hdr *)hdr)->npar; | |
24bbb1fa MH |
60 | } |
61 | ||
62 | static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr) | |
63 | { | |
e65f30e0 JF |
64 | if (type == DIAG204_INFO_SIMPLE) |
65 | return ((struct diag204_info_blk_hdr *)hdr)->flags; | |
66 | else /* DIAG204_INFO_EXT */ | |
67 | return ((struct diag204_x_info_blk_hdr *)hdr)->flags; | |
24bbb1fa MH |
68 | } |
69 | ||
70 | static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr) | |
71 | { | |
e65f30e0 JF |
72 | if (type == DIAG204_INFO_SIMPLE) |
73 | return ((struct diag204_info_blk_hdr *)hdr)->phys_cpus; | |
74 | else /* DIAG204_INFO_EXT */ | |
75 | return ((struct diag204_x_info_blk_hdr *)hdr)->phys_cpus; | |
24bbb1fa MH |
76 | } |
77 | ||
78 | /* Partition header */ | |
79 | ||
24bbb1fa MH |
80 | static inline int part_hdr__size(enum diag204_format type) |
81 | { | |
e65f30e0 JF |
82 | if (type == DIAG204_INFO_SIMPLE) |
83 | return sizeof(struct diag204_part_hdr); | |
84 | else /* DIAG204_INFO_EXT */ | |
85 | return sizeof(struct diag204_x_part_hdr); | |
24bbb1fa MH |
86 | } |
87 | ||
88 | static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr) | |
89 | { | |
e65f30e0 JF |
90 | if (type == DIAG204_INFO_SIMPLE) |
91 | return ((struct diag204_part_hdr *)hdr)->cpus; | |
92 | else /* DIAG204_INFO_EXT */ | |
93 | return ((struct diag204_x_part_hdr *)hdr)->rcpus; | |
24bbb1fa MH |
94 | } |
95 | ||
96 | static inline void part_hdr__part_name(enum diag204_format type, void *hdr, | |
97 | char *name) | |
98 | { | |
e65f30e0 JF |
99 | if (type == DIAG204_INFO_SIMPLE) |
100 | memcpy(name, ((struct diag204_part_hdr *)hdr)->part_name, | |
101 | DIAG204_LPAR_NAME_LEN); | |
102 | else /* DIAG204_INFO_EXT */ | |
103 | memcpy(name, ((struct diag204_x_part_hdr *)hdr)->part_name, | |
104 | DIAG204_LPAR_NAME_LEN); | |
105 | EBCASC(name, DIAG204_LPAR_NAME_LEN); | |
106 | name[DIAG204_LPAR_NAME_LEN] = 0; | |
1d802e24 | 107 | strim(name); |
24bbb1fa MH |
108 | } |
109 | ||
24bbb1fa MH |
110 | /* CPU info block */ |
111 | ||
112 | static inline int cpu_info__size(enum diag204_format type) | |
113 | { | |
e65f30e0 JF |
114 | if (type == DIAG204_INFO_SIMPLE) |
115 | return sizeof(struct diag204_cpu_info); | |
116 | else /* DIAG204_INFO_EXT */ | |
117 | return sizeof(struct diag204_x_cpu_info); | |
24bbb1fa MH |
118 | } |
119 | ||
120 | static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr) | |
121 | { | |
e65f30e0 JF |
122 | if (type == DIAG204_INFO_SIMPLE) |
123 | return ((struct diag204_cpu_info *)hdr)->ctidx; | |
124 | else /* DIAG204_INFO_EXT */ | |
125 | return ((struct diag204_x_cpu_info *)hdr)->ctidx; | |
24bbb1fa MH |
126 | } |
127 | ||
128 | static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr) | |
129 | { | |
e65f30e0 JF |
130 | if (type == DIAG204_INFO_SIMPLE) |
131 | return ((struct diag204_cpu_info *)hdr)->cpu_addr; | |
132 | else /* DIAG204_INFO_EXT */ | |
133 | return ((struct diag204_x_cpu_info *)hdr)->cpu_addr; | |
24bbb1fa MH |
134 | } |
135 | ||
136 | static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr) | |
137 | { | |
e65f30e0 JF |
138 | if (type == DIAG204_INFO_SIMPLE) |
139 | return ((struct diag204_cpu_info *)hdr)->acc_time; | |
140 | else /* DIAG204_INFO_EXT */ | |
141 | return ((struct diag204_x_cpu_info *)hdr)->acc_time; | |
24bbb1fa MH |
142 | } |
143 | ||
144 | static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr) | |
145 | { | |
e65f30e0 JF |
146 | if (type == DIAG204_INFO_SIMPLE) |
147 | return ((struct diag204_cpu_info *)hdr)->lp_time; | |
148 | else /* DIAG204_INFO_EXT */ | |
149 | return ((struct diag204_x_cpu_info *)hdr)->lp_time; | |
24bbb1fa MH |
150 | } |
151 | ||
152 | static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr) | |
153 | { | |
e65f30e0 | 154 | if (type == DIAG204_INFO_SIMPLE) |
24bbb1fa | 155 | return 0; /* online_time not available in simple info */ |
e65f30e0 JF |
156 | else /* DIAG204_INFO_EXT */ |
157 | return ((struct diag204_x_cpu_info *)hdr)->online_time; | |
24bbb1fa MH |
158 | } |
159 | ||
160 | /* Physical header */ | |
161 | ||
24bbb1fa MH |
162 | static inline int phys_hdr__size(enum diag204_format type) |
163 | { | |
e65f30e0 JF |
164 | if (type == DIAG204_INFO_SIMPLE) |
165 | return sizeof(struct diag204_phys_hdr); | |
166 | else /* DIAG204_INFO_EXT */ | |
167 | return sizeof(struct diag204_x_phys_hdr); | |
24bbb1fa MH |
168 | } |
169 | ||
170 | static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr) | |
171 | { | |
e65f30e0 JF |
172 | if (type == DIAG204_INFO_SIMPLE) |
173 | return ((struct diag204_phys_hdr *)hdr)->cpus; | |
174 | else /* DIAG204_INFO_EXT */ | |
175 | return ((struct diag204_x_phys_hdr *)hdr)->cpus; | |
24bbb1fa MH |
176 | } |
177 | ||
178 | /* Physical CPU info block */ | |
179 | ||
24bbb1fa MH |
180 | static inline int phys_cpu__size(enum diag204_format type) |
181 | { | |
e65f30e0 JF |
182 | if (type == DIAG204_INFO_SIMPLE) |
183 | return sizeof(struct diag204_phys_cpu); | |
184 | else /* DIAG204_INFO_EXT */ | |
185 | return sizeof(struct diag204_x_phys_cpu); | |
24bbb1fa MH |
186 | } |
187 | ||
188 | static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr) | |
189 | { | |
e65f30e0 JF |
190 | if (type == DIAG204_INFO_SIMPLE) |
191 | return ((struct diag204_phys_cpu *)hdr)->cpu_addr; | |
192 | else /* DIAG204_INFO_EXT */ | |
193 | return ((struct diag204_x_phys_cpu *)hdr)->cpu_addr; | |
24bbb1fa MH |
194 | } |
195 | ||
196 | static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr) | |
197 | { | |
e65f30e0 JF |
198 | if (type == DIAG204_INFO_SIMPLE) |
199 | return ((struct diag204_phys_cpu *)hdr)->mgm_time; | |
200 | else /* DIAG204_INFO_EXT */ | |
201 | return ((struct diag204_x_phys_cpu *)hdr)->mgm_time; | |
24bbb1fa MH |
202 | } |
203 | ||
204 | static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr) | |
205 | { | |
e65f30e0 JF |
206 | if (type == DIAG204_INFO_SIMPLE) |
207 | return ((struct diag204_phys_cpu *)hdr)->ctidx; | |
208 | else /* DIAG204_INFO_EXT */ | |
209 | return ((struct diag204_x_phys_cpu *)hdr)->ctidx; | |
24bbb1fa MH |
210 | } |
211 | ||
212 | /* Diagnose 204 functions */ | |
24bbb1fa MH |
213 | /* |
214 | * For the old diag subcode 4 with simple data format we have to use real | |
215 | * memory. If we use subcode 6 or 7 with extended data format, we can (and | |
216 | * should) use vmalloc, since we need a lot of memory in that case. Currently | |
217 | * up to 93 pages! | |
218 | */ | |
219 | ||
220 | static void diag204_free_buffer(void) | |
221 | { | |
222 | if (!diag204_buf) | |
223 | return; | |
224 | if (diag204_buf_vmalloc) { | |
225 | vfree(diag204_buf_vmalloc); | |
226 | diag204_buf_vmalloc = NULL; | |
227 | } else { | |
228 | free_pages((unsigned long) diag204_buf, 0); | |
229 | } | |
24bbb1fa MH |
230 | diag204_buf = NULL; |
231 | } | |
232 | ||
57b28f66 MH |
233 | static void *page_align_ptr(void *ptr) |
234 | { | |
235 | return (void *) PAGE_ALIGN((unsigned long) ptr); | |
236 | } | |
237 | ||
24bbb1fa MH |
238 | static void *diag204_alloc_vbuf(int pages) |
239 | { | |
240 | /* The buffer has to be page aligned! */ | |
241 | diag204_buf_vmalloc = vmalloc(PAGE_SIZE * (pages + 1)); | |
242 | if (!diag204_buf_vmalloc) | |
243 | return ERR_PTR(-ENOMEM); | |
57b28f66 | 244 | diag204_buf = page_align_ptr(diag204_buf_vmalloc); |
24bbb1fa MH |
245 | diag204_buf_pages = pages; |
246 | return diag204_buf; | |
247 | } | |
248 | ||
249 | static void *diag204_alloc_rbuf(void) | |
250 | { | |
251 | diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0); | |
86b22470 | 252 | if (!diag204_buf) |
24bbb1fa MH |
253 | return ERR_PTR(-ENOMEM); |
254 | diag204_buf_pages = 1; | |
255 | return diag204_buf; | |
256 | } | |
257 | ||
258 | static void *diag204_get_buffer(enum diag204_format fmt, int *pages) | |
259 | { | |
260 | if (diag204_buf) { | |
261 | *pages = diag204_buf_pages; | |
262 | return diag204_buf; | |
263 | } | |
e65f30e0 | 264 | if (fmt == DIAG204_INFO_SIMPLE) { |
24bbb1fa MH |
265 | *pages = 1; |
266 | return diag204_alloc_rbuf(); | |
e65f30e0 JF |
267 | } else {/* DIAG204_INFO_EXT */ |
268 | *pages = diag204((unsigned long)DIAG204_SUBC_RSI | | |
269 | (unsigned long)DIAG204_INFO_EXT, 0, NULL); | |
24bbb1fa MH |
270 | if (*pages <= 0) |
271 | return ERR_PTR(-ENOSYS); | |
272 | else | |
273 | return diag204_alloc_vbuf(*pages); | |
274 | } | |
275 | } | |
276 | ||
277 | /* | |
278 | * diag204_probe() has to find out, which type of diagnose 204 implementation | |
279 | * we have on our machine. Currently there are three possible scanarios: | |
280 | * - subcode 4 + simple data format (only one page) | |
281 | * - subcode 4-6 + extended data format | |
282 | * - subcode 4-7 + extended data format | |
283 | * | |
284 | * Subcode 5 is used to retrieve the size of the data, provided by subcodes | |
285 | * 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition | |
286 | * to subcode 6 it provides also information about secondary cpus. | |
287 | * In order to get as much information as possible, we first try | |
288 | * subcode 7, then 6 and if both fail, we use subcode 4. | |
289 | */ | |
290 | ||
291 | static int diag204_probe(void) | |
292 | { | |
293 | void *buf; | |
294 | int pages, rc; | |
295 | ||
e65f30e0 | 296 | buf = diag204_get_buffer(DIAG204_INFO_EXT, &pages); |
24bbb1fa | 297 | if (!IS_ERR(buf)) { |
e65f30e0 JF |
298 | if (diag204((unsigned long)DIAG204_SUBC_STIB7 | |
299 | (unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) { | |
300 | diag204_store_sc = DIAG204_SUBC_STIB7; | |
301 | diag204_info_type = DIAG204_INFO_EXT; | |
24bbb1fa MH |
302 | goto out; |
303 | } | |
e65f30e0 JF |
304 | if (diag204((unsigned long)DIAG204_SUBC_STIB6 | |
305 | (unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) { | |
306 | diag204_store_sc = DIAG204_SUBC_STIB6; | |
307 | diag204_info_type = DIAG204_INFO_EXT; | |
24bbb1fa MH |
308 | goto out; |
309 | } | |
310 | diag204_free_buffer(); | |
311 | } | |
312 | ||
313 | /* subcodes 6 and 7 failed, now try subcode 4 */ | |
314 | ||
e65f30e0 | 315 | buf = diag204_get_buffer(DIAG204_INFO_SIMPLE, &pages); |
24bbb1fa MH |
316 | if (IS_ERR(buf)) { |
317 | rc = PTR_ERR(buf); | |
318 | goto fail_alloc; | |
319 | } | |
e65f30e0 JF |
320 | if (diag204((unsigned long)DIAG204_SUBC_STIB4 | |
321 | (unsigned long)DIAG204_INFO_SIMPLE, pages, buf) >= 0) { | |
322 | diag204_store_sc = DIAG204_SUBC_STIB4; | |
323 | diag204_info_type = DIAG204_INFO_SIMPLE; | |
24bbb1fa MH |
324 | goto out; |
325 | } else { | |
326 | rc = -ENOSYS; | |
327 | goto fail_store; | |
328 | } | |
329 | out: | |
330 | rc = 0; | |
331 | fail_store: | |
332 | diag204_free_buffer(); | |
333 | fail_alloc: | |
334 | return rc; | |
335 | } | |
336 | ||
57b28f66 MH |
337 | static int diag204_do_store(void *buf, int pages) |
338 | { | |
339 | int rc; | |
340 | ||
341 | rc = diag204((unsigned long) diag204_store_sc | | |
342 | (unsigned long) diag204_info_type, pages, buf); | |
343 | return rc < 0 ? -ENOSYS : 0; | |
344 | } | |
345 | ||
24bbb1fa MH |
346 | static void *diag204_store(void) |
347 | { | |
348 | void *buf; | |
57b28f66 | 349 | int pages, rc; |
24bbb1fa MH |
350 | |
351 | buf = diag204_get_buffer(diag204_info_type, &pages); | |
352 | if (IS_ERR(buf)) | |
353 | goto out; | |
57b28f66 MH |
354 | rc = diag204_do_store(buf, pages); |
355 | if (rc) | |
356 | return ERR_PTR(rc); | |
24bbb1fa MH |
357 | out: |
358 | return buf; | |
359 | } | |
360 | ||
361 | /* Diagnose 224 functions */ | |
362 | ||
24bbb1fa MH |
363 | static int diag224_get_name_table(void) |
364 | { | |
365 | /* memory must be below 2GB */ | |
366 | diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA); | |
367 | if (!diag224_cpu_names) | |
368 | return -ENOMEM; | |
c41d4e3e MH |
369 | if (diag224(diag224_cpu_names)) { |
370 | kfree(diag224_cpu_names); | |
b8e660b8 | 371 | return -EOPNOTSUPP; |
c41d4e3e | 372 | } |
24bbb1fa MH |
373 | EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16); |
374 | return 0; | |
375 | } | |
376 | ||
377 | static void diag224_delete_name_table(void) | |
378 | { | |
379 | kfree(diag224_cpu_names); | |
380 | } | |
381 | ||
382 | static int diag224_idx2name(int index, char *name) | |
383 | { | |
e65f30e0 JF |
384 | memcpy(name, diag224_cpu_names + ((index + 1) * DIAG204_CPU_NAME_LEN), |
385 | DIAG204_CPU_NAME_LEN); | |
386 | name[DIAG204_CPU_NAME_LEN] = 0; | |
1d802e24 | 387 | strim(name); |
24bbb1fa MH |
388 | return 0; |
389 | } | |
390 | ||
57b28f66 MH |
391 | struct dbfs_d204_hdr { |
392 | u64 len; /* Length of d204 buffer without header */ | |
393 | u16 version; /* Version of header */ | |
394 | u8 sc; /* Used subcode */ | |
395 | char reserved[53]; | |
396 | } __attribute__ ((packed)); | |
397 | ||
398 | struct dbfs_d204 { | |
399 | struct dbfs_d204_hdr hdr; /* 64 byte header */ | |
400 | char buf[]; /* d204 buffer */ | |
401 | } __attribute__ ((packed)); | |
402 | ||
2fcb3686 | 403 | static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size) |
57b28f66 | 404 | { |
57b28f66 MH |
405 | struct dbfs_d204 *d204; |
406 | int rc, buf_size; | |
2fcb3686 | 407 | void *base; |
57b28f66 | 408 | |
57b28f66 | 409 | buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr); |
dc8a5c99 | 410 | base = vzalloc(buf_size); |
2fcb3686 MH |
411 | if (!base) |
412 | return -ENOMEM; | |
2fcb3686 MH |
413 | d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr); |
414 | rc = diag204_do_store(d204->buf, diag204_buf_pages); | |
415 | if (rc) { | |
416 | vfree(base); | |
417 | return rc; | |
57b28f66 | 418 | } |
57b28f66 MH |
419 | d204->hdr.version = DBFS_D204_HDR_VERSION; |
420 | d204->hdr.len = PAGE_SIZE * diag204_buf_pages; | |
421 | d204->hdr.sc = diag204_store_sc; | |
2fcb3686 MH |
422 | *data = d204; |
423 | *data_free_ptr = base; | |
424 | *size = d204->hdr.len + sizeof(struct dbfs_d204_hdr); | |
57b28f66 MH |
425 | return 0; |
426 | } | |
427 | ||
2fcb3686 MH |
428 | static struct hypfs_dbfs_file dbfs_file_d204 = { |
429 | .name = "diag_204", | |
430 | .data_create = dbfs_d204_create, | |
431 | .data_free = vfree, | |
57b28f66 MH |
432 | }; |
433 | ||
24bbb1fa MH |
434 | __init int hypfs_diag_init(void) |
435 | { | |
436 | int rc; | |
437 | ||
438 | if (diag204_probe()) { | |
f55495ba | 439 | pr_err("The hardware system does not support hypfs\n"); |
24bbb1fa MH |
440 | return -ENODATA; |
441 | } | |
e65f30e0 | 442 | if (diag204_info_type == DIAG204_INFO_EXT) { |
2fcb3686 | 443 | rc = hypfs_dbfs_create_file(&dbfs_file_d204); |
57b28f66 | 444 | if (rc) |
3c8ebca0 | 445 | return rc; |
57b28f66 | 446 | } |
3c8ebca0 MH |
447 | if (MACHINE_IS_LPAR) { |
448 | rc = diag224_get_name_table(); | |
449 | if (rc) { | |
450 | pr_err("The hardware system does not provide all " | |
451 | "functions required by hypfs\n"); | |
452 | debugfs_remove(dbfs_d204_file); | |
453 | return rc; | |
454 | } | |
455 | } | |
456 | return 0; | |
24bbb1fa MH |
457 | } |
458 | ||
1375fc1f | 459 | void hypfs_diag_exit(void) |
24bbb1fa | 460 | { |
57b28f66 | 461 | debugfs_remove(dbfs_d204_file); |
24bbb1fa MH |
462 | diag224_delete_name_table(); |
463 | diag204_free_buffer(); | |
2fcb3686 | 464 | hypfs_dbfs_remove_file(&dbfs_file_d204); |
24bbb1fa MH |
465 | } |
466 | ||
467 | /* | |
468 | * Functions to create the directory structure | |
469 | * ******************************************* | |
470 | */ | |
471 | ||
e334cf4f | 472 | static int hypfs_create_cpu_files(struct dentry *cpus_dir, void *cpu_info) |
24bbb1fa MH |
473 | { |
474 | struct dentry *cpu_dir; | |
475 | char buffer[TMP_SIZE]; | |
476 | void *rc; | |
477 | ||
478 | snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type, | |
479 | cpu_info)); | |
a118cfdf AV |
480 | cpu_dir = hypfs_mkdir(cpus_dir, buffer); |
481 | rc = hypfs_create_u64(cpu_dir, "mgmtime", | |
24bbb1fa MH |
482 | cpu_info__acc_time(diag204_info_type, cpu_info) - |
483 | cpu_info__lp_time(diag204_info_type, cpu_info)); | |
484 | if (IS_ERR(rc)) | |
485 | return PTR_ERR(rc); | |
a118cfdf | 486 | rc = hypfs_create_u64(cpu_dir, "cputime", |
24bbb1fa MH |
487 | cpu_info__lp_time(diag204_info_type, cpu_info)); |
488 | if (IS_ERR(rc)) | |
489 | return PTR_ERR(rc); | |
e65f30e0 | 490 | if (diag204_info_type == DIAG204_INFO_EXT) { |
a118cfdf | 491 | rc = hypfs_create_u64(cpu_dir, "onlinetime", |
24bbb1fa MH |
492 | cpu_info__online_time(diag204_info_type, |
493 | cpu_info)); | |
494 | if (IS_ERR(rc)) | |
495 | return PTR_ERR(rc); | |
496 | } | |
497 | diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer); | |
a118cfdf | 498 | rc = hypfs_create_str(cpu_dir, "type", buffer); |
5eba9bb8 | 499 | return PTR_RET(rc); |
24bbb1fa MH |
500 | } |
501 | ||
e334cf4f | 502 | static void *hypfs_create_lpar_files(struct dentry *systems_dir, void *part_hdr) |
24bbb1fa MH |
503 | { |
504 | struct dentry *cpus_dir; | |
505 | struct dentry *lpar_dir; | |
e65f30e0 | 506 | char lpar_name[DIAG204_LPAR_NAME_LEN + 1]; |
24bbb1fa MH |
507 | void *cpu_info; |
508 | int i; | |
509 | ||
510 | part_hdr__part_name(diag204_info_type, part_hdr, lpar_name); | |
e65f30e0 | 511 | lpar_name[DIAG204_LPAR_NAME_LEN] = 0; |
a118cfdf | 512 | lpar_dir = hypfs_mkdir(systems_dir, lpar_name); |
24bbb1fa MH |
513 | if (IS_ERR(lpar_dir)) |
514 | return lpar_dir; | |
a118cfdf | 515 | cpus_dir = hypfs_mkdir(lpar_dir, "cpus"); |
24bbb1fa MH |
516 | if (IS_ERR(cpus_dir)) |
517 | return cpus_dir; | |
518 | cpu_info = part_hdr + part_hdr__size(diag204_info_type); | |
519 | for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) { | |
520 | int rc; | |
e334cf4f | 521 | rc = hypfs_create_cpu_files(cpus_dir, cpu_info); |
24bbb1fa MH |
522 | if (rc) |
523 | return ERR_PTR(rc); | |
524 | cpu_info += cpu_info__size(diag204_info_type); | |
525 | } | |
526 | return cpu_info; | |
527 | } | |
528 | ||
e334cf4f | 529 | static int hypfs_create_phys_cpu_files(struct dentry *cpus_dir, void *cpu_info) |
24bbb1fa MH |
530 | { |
531 | struct dentry *cpu_dir; | |
532 | char buffer[TMP_SIZE]; | |
533 | void *rc; | |
534 | ||
535 | snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type, | |
536 | cpu_info)); | |
a118cfdf | 537 | cpu_dir = hypfs_mkdir(cpus_dir, buffer); |
24bbb1fa MH |
538 | if (IS_ERR(cpu_dir)) |
539 | return PTR_ERR(cpu_dir); | |
a118cfdf | 540 | rc = hypfs_create_u64(cpu_dir, "mgmtime", |
24bbb1fa MH |
541 | phys_cpu__mgm_time(diag204_info_type, cpu_info)); |
542 | if (IS_ERR(rc)) | |
543 | return PTR_ERR(rc); | |
544 | diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer); | |
a118cfdf | 545 | rc = hypfs_create_str(cpu_dir, "type", buffer); |
5eba9bb8 | 546 | return PTR_RET(rc); |
24bbb1fa MH |
547 | } |
548 | ||
e334cf4f | 549 | static void *hypfs_create_phys_files(struct dentry *parent_dir, void *phys_hdr) |
24bbb1fa MH |
550 | { |
551 | int i; | |
552 | void *cpu_info; | |
553 | struct dentry *cpus_dir; | |
554 | ||
a118cfdf | 555 | cpus_dir = hypfs_mkdir(parent_dir, "cpus"); |
24bbb1fa MH |
556 | if (IS_ERR(cpus_dir)) |
557 | return cpus_dir; | |
558 | cpu_info = phys_hdr + phys_hdr__size(diag204_info_type); | |
559 | for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) { | |
560 | int rc; | |
e334cf4f | 561 | rc = hypfs_create_phys_cpu_files(cpus_dir, cpu_info); |
24bbb1fa MH |
562 | if (rc) |
563 | return ERR_PTR(rc); | |
564 | cpu_info += phys_cpu__size(diag204_info_type); | |
565 | } | |
566 | return cpu_info; | |
567 | } | |
568 | ||
e334cf4f | 569 | int hypfs_diag_create_files(struct dentry *root) |
24bbb1fa MH |
570 | { |
571 | struct dentry *systems_dir, *hyp_dir; | |
572 | void *time_hdr, *part_hdr; | |
573 | int i, rc; | |
574 | void *buffer, *ptr; | |
575 | ||
576 | buffer = diag204_store(); | |
577 | if (IS_ERR(buffer)) | |
578 | return PTR_ERR(buffer); | |
579 | ||
a118cfdf | 580 | systems_dir = hypfs_mkdir(root, "systems"); |
24bbb1fa MH |
581 | if (IS_ERR(systems_dir)) { |
582 | rc = PTR_ERR(systems_dir); | |
583 | goto err_out; | |
584 | } | |
585 | time_hdr = (struct x_info_blk_hdr *)buffer; | |
586 | part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type); | |
587 | for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) { | |
e334cf4f | 588 | part_hdr = hypfs_create_lpar_files(systems_dir, part_hdr); |
24bbb1fa MH |
589 | if (IS_ERR(part_hdr)) { |
590 | rc = PTR_ERR(part_hdr); | |
591 | goto err_out; | |
592 | } | |
593 | } | |
e65f30e0 JF |
594 | if (info_blk_hdr__flags(diag204_info_type, time_hdr) & |
595 | DIAG204_LPAR_PHYS_FLG) { | |
e334cf4f | 596 | ptr = hypfs_create_phys_files(root, part_hdr); |
24bbb1fa MH |
597 | if (IS_ERR(ptr)) { |
598 | rc = PTR_ERR(ptr); | |
599 | goto err_out; | |
600 | } | |
601 | } | |
a118cfdf | 602 | hyp_dir = hypfs_mkdir(root, "hyp"); |
24bbb1fa MH |
603 | if (IS_ERR(hyp_dir)) { |
604 | rc = PTR_ERR(hyp_dir); | |
605 | goto err_out; | |
606 | } | |
a118cfdf | 607 | ptr = hypfs_create_str(hyp_dir, "type", "LPAR Hypervisor"); |
24bbb1fa MH |
608 | if (IS_ERR(ptr)) { |
609 | rc = PTR_ERR(ptr); | |
610 | goto err_out; | |
611 | } | |
612 | rc = 0; | |
613 | ||
614 | err_out: | |
615 | return rc; | |
616 | } |