Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
24bbb1fa | 2 | /* |
24bbb1fa MH |
3 | * Hypervisor filesystem for Linux on s390. Diag 204 and 224 |
4 | * implementation. | |
5 | * | |
f55495ba | 6 | * Copyright IBM Corp. 2006, 2008 |
24bbb1fa MH |
7 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
8 | */ | |
9 | ||
f55495ba MH |
10 | #define KMSG_COMPONENT "hypfs" |
11 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
12 | ||
24bbb1fa MH |
13 | #include <linux/types.h> |
14 | #include <linux/errno.h> | |
33b26d79 | 15 | #include <linux/slab.h> |
24bbb1fa MH |
16 | #include <linux/string.h> |
17 | #include <linux/vmalloc.h> | |
57b28f66 | 18 | #include <linux/mm.h> |
1ec2772e | 19 | #include <asm/diag.h> |
24bbb1fa MH |
20 | #include <asm/ebcdic.h> |
21 | #include "hypfs.h" | |
22 | ||
24bbb1fa MH |
23 | #define TMP_SIZE 64 /* size of temporary buffers */ |
24 | ||
57b28f66 MH |
25 | #define DBFS_D204_HDR_VERSION 0 |
26 | ||
24bbb1fa MH |
27 | static char *diag224_cpu_names; /* diag 224 name table */ |
28 | static enum diag204_sc diag204_store_sc; /* used subcode for store */ | |
29 | static enum diag204_format diag204_info_type; /* used diag 204 data format */ | |
30 | ||
31 | static void *diag204_buf; /* 4K aligned buffer for diag204 data */ | |
32 | static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */ | |
33 | static int diag204_buf_pages; /* number of pages for diag204 data */ | |
34 | ||
57b28f66 MH |
35 | static struct dentry *dbfs_d204_file; |
36 | ||
24bbb1fa | 37 | /* |
e65f30e0 | 38 | * DIAG 204 member access functions. |
24bbb1fa MH |
39 | * |
40 | * Since we have two different diag 204 data formats for old and new s390 | |
41 | * machines, we do not access the structs directly, but use getter functions for | |
42 | * each struct member instead. This should make the code more readable. | |
43 | */ | |
44 | ||
45 | /* Time information block */ | |
46 | ||
24bbb1fa MH |
47 | static inline int info_blk_hdr__size(enum diag204_format type) |
48 | { | |
e65f30e0 JF |
49 | if (type == DIAG204_INFO_SIMPLE) |
50 | return sizeof(struct diag204_info_blk_hdr); | |
51 | else /* DIAG204_INFO_EXT */ | |
52 | return sizeof(struct diag204_x_info_blk_hdr); | |
24bbb1fa MH |
53 | } |
54 | ||
55 | static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr) | |
56 | { | |
e65f30e0 JF |
57 | if (type == DIAG204_INFO_SIMPLE) |
58 | return ((struct diag204_info_blk_hdr *)hdr)->npar; | |
59 | else /* DIAG204_INFO_EXT */ | |
60 | return ((struct diag204_x_info_blk_hdr *)hdr)->npar; | |
24bbb1fa MH |
61 | } |
62 | ||
63 | static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr) | |
64 | { | |
e65f30e0 JF |
65 | if (type == DIAG204_INFO_SIMPLE) |
66 | return ((struct diag204_info_blk_hdr *)hdr)->flags; | |
67 | else /* DIAG204_INFO_EXT */ | |
68 | return ((struct diag204_x_info_blk_hdr *)hdr)->flags; | |
24bbb1fa MH |
69 | } |
70 | ||
71 | static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr) | |
72 | { | |
e65f30e0 JF |
73 | if (type == DIAG204_INFO_SIMPLE) |
74 | return ((struct diag204_info_blk_hdr *)hdr)->phys_cpus; | |
75 | else /* DIAG204_INFO_EXT */ | |
76 | return ((struct diag204_x_info_blk_hdr *)hdr)->phys_cpus; | |
24bbb1fa MH |
77 | } |
78 | ||
79 | /* Partition header */ | |
80 | ||
24bbb1fa MH |
81 | static inline int part_hdr__size(enum diag204_format type) |
82 | { | |
e65f30e0 JF |
83 | if (type == DIAG204_INFO_SIMPLE) |
84 | return sizeof(struct diag204_part_hdr); | |
85 | else /* DIAG204_INFO_EXT */ | |
86 | return sizeof(struct diag204_x_part_hdr); | |
24bbb1fa MH |
87 | } |
88 | ||
89 | static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr) | |
90 | { | |
e65f30e0 JF |
91 | if (type == DIAG204_INFO_SIMPLE) |
92 | return ((struct diag204_part_hdr *)hdr)->cpus; | |
93 | else /* DIAG204_INFO_EXT */ | |
94 | return ((struct diag204_x_part_hdr *)hdr)->rcpus; | |
24bbb1fa MH |
95 | } |
96 | ||
97 | static inline void part_hdr__part_name(enum diag204_format type, void *hdr, | |
98 | char *name) | |
99 | { | |
e65f30e0 JF |
100 | if (type == DIAG204_INFO_SIMPLE) |
101 | memcpy(name, ((struct diag204_part_hdr *)hdr)->part_name, | |
102 | DIAG204_LPAR_NAME_LEN); | |
103 | else /* DIAG204_INFO_EXT */ | |
104 | memcpy(name, ((struct diag204_x_part_hdr *)hdr)->part_name, | |
105 | DIAG204_LPAR_NAME_LEN); | |
106 | EBCASC(name, DIAG204_LPAR_NAME_LEN); | |
107 | name[DIAG204_LPAR_NAME_LEN] = 0; | |
1d802e24 | 108 | strim(name); |
24bbb1fa MH |
109 | } |
110 | ||
24bbb1fa MH |
111 | /* CPU info block */ |
112 | ||
113 | static inline int cpu_info__size(enum diag204_format type) | |
114 | { | |
e65f30e0 JF |
115 | if (type == DIAG204_INFO_SIMPLE) |
116 | return sizeof(struct diag204_cpu_info); | |
117 | else /* DIAG204_INFO_EXT */ | |
118 | return sizeof(struct diag204_x_cpu_info); | |
24bbb1fa MH |
119 | } |
120 | ||
121 | static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr) | |
122 | { | |
e65f30e0 JF |
123 | if (type == DIAG204_INFO_SIMPLE) |
124 | return ((struct diag204_cpu_info *)hdr)->ctidx; | |
125 | else /* DIAG204_INFO_EXT */ | |
126 | return ((struct diag204_x_cpu_info *)hdr)->ctidx; | |
24bbb1fa MH |
127 | } |
128 | ||
129 | static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr) | |
130 | { | |
e65f30e0 JF |
131 | if (type == DIAG204_INFO_SIMPLE) |
132 | return ((struct diag204_cpu_info *)hdr)->cpu_addr; | |
133 | else /* DIAG204_INFO_EXT */ | |
134 | return ((struct diag204_x_cpu_info *)hdr)->cpu_addr; | |
24bbb1fa MH |
135 | } |
136 | ||
137 | static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr) | |
138 | { | |
e65f30e0 JF |
139 | if (type == DIAG204_INFO_SIMPLE) |
140 | return ((struct diag204_cpu_info *)hdr)->acc_time; | |
141 | else /* DIAG204_INFO_EXT */ | |
142 | return ((struct diag204_x_cpu_info *)hdr)->acc_time; | |
24bbb1fa MH |
143 | } |
144 | ||
145 | static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr) | |
146 | { | |
e65f30e0 JF |
147 | if (type == DIAG204_INFO_SIMPLE) |
148 | return ((struct diag204_cpu_info *)hdr)->lp_time; | |
149 | else /* DIAG204_INFO_EXT */ | |
150 | return ((struct diag204_x_cpu_info *)hdr)->lp_time; | |
24bbb1fa MH |
151 | } |
152 | ||
153 | static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr) | |
154 | { | |
e65f30e0 | 155 | if (type == DIAG204_INFO_SIMPLE) |
24bbb1fa | 156 | return 0; /* online_time not available in simple info */ |
e65f30e0 JF |
157 | else /* DIAG204_INFO_EXT */ |
158 | return ((struct diag204_x_cpu_info *)hdr)->online_time; | |
24bbb1fa MH |
159 | } |
160 | ||
161 | /* Physical header */ | |
162 | ||
24bbb1fa MH |
163 | static inline int phys_hdr__size(enum diag204_format type) |
164 | { | |
e65f30e0 JF |
165 | if (type == DIAG204_INFO_SIMPLE) |
166 | return sizeof(struct diag204_phys_hdr); | |
167 | else /* DIAG204_INFO_EXT */ | |
168 | return sizeof(struct diag204_x_phys_hdr); | |
24bbb1fa MH |
169 | } |
170 | ||
171 | static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr) | |
172 | { | |
e65f30e0 JF |
173 | if (type == DIAG204_INFO_SIMPLE) |
174 | return ((struct diag204_phys_hdr *)hdr)->cpus; | |
175 | else /* DIAG204_INFO_EXT */ | |
176 | return ((struct diag204_x_phys_hdr *)hdr)->cpus; | |
24bbb1fa MH |
177 | } |
178 | ||
179 | /* Physical CPU info block */ | |
180 | ||
24bbb1fa MH |
181 | static inline int phys_cpu__size(enum diag204_format type) |
182 | { | |
e65f30e0 JF |
183 | if (type == DIAG204_INFO_SIMPLE) |
184 | return sizeof(struct diag204_phys_cpu); | |
185 | else /* DIAG204_INFO_EXT */ | |
186 | return sizeof(struct diag204_x_phys_cpu); | |
24bbb1fa MH |
187 | } |
188 | ||
189 | static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr) | |
190 | { | |
e65f30e0 JF |
191 | if (type == DIAG204_INFO_SIMPLE) |
192 | return ((struct diag204_phys_cpu *)hdr)->cpu_addr; | |
193 | else /* DIAG204_INFO_EXT */ | |
194 | return ((struct diag204_x_phys_cpu *)hdr)->cpu_addr; | |
24bbb1fa MH |
195 | } |
196 | ||
197 | static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr) | |
198 | { | |
e65f30e0 JF |
199 | if (type == DIAG204_INFO_SIMPLE) |
200 | return ((struct diag204_phys_cpu *)hdr)->mgm_time; | |
201 | else /* DIAG204_INFO_EXT */ | |
202 | return ((struct diag204_x_phys_cpu *)hdr)->mgm_time; | |
24bbb1fa MH |
203 | } |
204 | ||
205 | static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr) | |
206 | { | |
e65f30e0 JF |
207 | if (type == DIAG204_INFO_SIMPLE) |
208 | return ((struct diag204_phys_cpu *)hdr)->ctidx; | |
209 | else /* DIAG204_INFO_EXT */ | |
210 | return ((struct diag204_x_phys_cpu *)hdr)->ctidx; | |
24bbb1fa MH |
211 | } |
212 | ||
213 | /* Diagnose 204 functions */ | |
24bbb1fa MH |
214 | /* |
215 | * For the old diag subcode 4 with simple data format we have to use real | |
216 | * memory. If we use subcode 6 or 7 with extended data format, we can (and | |
217 | * should) use vmalloc, since we need a lot of memory in that case. Currently | |
218 | * up to 93 pages! | |
219 | */ | |
220 | ||
221 | static void diag204_free_buffer(void) | |
222 | { | |
223 | if (!diag204_buf) | |
224 | return; | |
225 | if (diag204_buf_vmalloc) { | |
226 | vfree(diag204_buf_vmalloc); | |
227 | diag204_buf_vmalloc = NULL; | |
228 | } else { | |
229 | free_pages((unsigned long) diag204_buf, 0); | |
230 | } | |
24bbb1fa MH |
231 | diag204_buf = NULL; |
232 | } | |
233 | ||
57b28f66 MH |
234 | static void *page_align_ptr(void *ptr) |
235 | { | |
236 | return (void *) PAGE_ALIGN((unsigned long) ptr); | |
237 | } | |
238 | ||
24bbb1fa MH |
239 | static void *diag204_alloc_vbuf(int pages) |
240 | { | |
241 | /* The buffer has to be page aligned! */ | |
42bc47b3 | 242 | diag204_buf_vmalloc = vmalloc(array_size(PAGE_SIZE, (pages + 1))); |
24bbb1fa MH |
243 | if (!diag204_buf_vmalloc) |
244 | return ERR_PTR(-ENOMEM); | |
57b28f66 | 245 | diag204_buf = page_align_ptr(diag204_buf_vmalloc); |
24bbb1fa MH |
246 | diag204_buf_pages = pages; |
247 | return diag204_buf; | |
248 | } | |
249 | ||
250 | static void *diag204_alloc_rbuf(void) | |
251 | { | |
252 | diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0); | |
86b22470 | 253 | if (!diag204_buf) |
24bbb1fa MH |
254 | return ERR_PTR(-ENOMEM); |
255 | diag204_buf_pages = 1; | |
256 | return diag204_buf; | |
257 | } | |
258 | ||
259 | static void *diag204_get_buffer(enum diag204_format fmt, int *pages) | |
260 | { | |
261 | if (diag204_buf) { | |
262 | *pages = diag204_buf_pages; | |
263 | return diag204_buf; | |
264 | } | |
e65f30e0 | 265 | if (fmt == DIAG204_INFO_SIMPLE) { |
24bbb1fa MH |
266 | *pages = 1; |
267 | return diag204_alloc_rbuf(); | |
e65f30e0 JF |
268 | } else {/* DIAG204_INFO_EXT */ |
269 | *pages = diag204((unsigned long)DIAG204_SUBC_RSI | | |
270 | (unsigned long)DIAG204_INFO_EXT, 0, NULL); | |
24bbb1fa MH |
271 | if (*pages <= 0) |
272 | return ERR_PTR(-ENOSYS); | |
273 | else | |
274 | return diag204_alloc_vbuf(*pages); | |
275 | } | |
276 | } | |
277 | ||
278 | /* | |
279 | * diag204_probe() has to find out, which type of diagnose 204 implementation | |
280 | * we have on our machine. Currently there are three possible scanarios: | |
281 | * - subcode 4 + simple data format (only one page) | |
282 | * - subcode 4-6 + extended data format | |
283 | * - subcode 4-7 + extended data format | |
284 | * | |
285 | * Subcode 5 is used to retrieve the size of the data, provided by subcodes | |
286 | * 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition | |
287 | * to subcode 6 it provides also information about secondary cpus. | |
288 | * In order to get as much information as possible, we first try | |
289 | * subcode 7, then 6 and if both fail, we use subcode 4. | |
290 | */ | |
291 | ||
292 | static int diag204_probe(void) | |
293 | { | |
294 | void *buf; | |
295 | int pages, rc; | |
296 | ||
e65f30e0 | 297 | buf = diag204_get_buffer(DIAG204_INFO_EXT, &pages); |
24bbb1fa | 298 | if (!IS_ERR(buf)) { |
e65f30e0 JF |
299 | if (diag204((unsigned long)DIAG204_SUBC_STIB7 | |
300 | (unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) { | |
301 | diag204_store_sc = DIAG204_SUBC_STIB7; | |
302 | diag204_info_type = DIAG204_INFO_EXT; | |
24bbb1fa MH |
303 | goto out; |
304 | } | |
e65f30e0 JF |
305 | if (diag204((unsigned long)DIAG204_SUBC_STIB6 | |
306 | (unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) { | |
307 | diag204_store_sc = DIAG204_SUBC_STIB6; | |
308 | diag204_info_type = DIAG204_INFO_EXT; | |
24bbb1fa MH |
309 | goto out; |
310 | } | |
311 | diag204_free_buffer(); | |
312 | } | |
313 | ||
314 | /* subcodes 6 and 7 failed, now try subcode 4 */ | |
315 | ||
e65f30e0 | 316 | buf = diag204_get_buffer(DIAG204_INFO_SIMPLE, &pages); |
24bbb1fa MH |
317 | if (IS_ERR(buf)) { |
318 | rc = PTR_ERR(buf); | |
319 | goto fail_alloc; | |
320 | } | |
e65f30e0 JF |
321 | if (diag204((unsigned long)DIAG204_SUBC_STIB4 | |
322 | (unsigned long)DIAG204_INFO_SIMPLE, pages, buf) >= 0) { | |
323 | diag204_store_sc = DIAG204_SUBC_STIB4; | |
324 | diag204_info_type = DIAG204_INFO_SIMPLE; | |
24bbb1fa MH |
325 | goto out; |
326 | } else { | |
327 | rc = -ENOSYS; | |
328 | goto fail_store; | |
329 | } | |
330 | out: | |
331 | rc = 0; | |
332 | fail_store: | |
333 | diag204_free_buffer(); | |
334 | fail_alloc: | |
335 | return rc; | |
336 | } | |
337 | ||
57b28f66 MH |
338 | static int diag204_do_store(void *buf, int pages) |
339 | { | |
340 | int rc; | |
341 | ||
342 | rc = diag204((unsigned long) diag204_store_sc | | |
343 | (unsigned long) diag204_info_type, pages, buf); | |
344 | return rc < 0 ? -ENOSYS : 0; | |
345 | } | |
346 | ||
24bbb1fa MH |
347 | static void *diag204_store(void) |
348 | { | |
349 | void *buf; | |
57b28f66 | 350 | int pages, rc; |
24bbb1fa MH |
351 | |
352 | buf = diag204_get_buffer(diag204_info_type, &pages); | |
353 | if (IS_ERR(buf)) | |
354 | goto out; | |
57b28f66 MH |
355 | rc = diag204_do_store(buf, pages); |
356 | if (rc) | |
357 | return ERR_PTR(rc); | |
24bbb1fa MH |
358 | out: |
359 | return buf; | |
360 | } | |
361 | ||
362 | /* Diagnose 224 functions */ | |
363 | ||
24bbb1fa MH |
364 | static int diag224_get_name_table(void) |
365 | { | |
366 | /* memory must be below 2GB */ | |
237d6e68 | 367 | diag224_cpu_names = (char *) __get_free_page(GFP_KERNEL | GFP_DMA); |
24bbb1fa MH |
368 | if (!diag224_cpu_names) |
369 | return -ENOMEM; | |
c41d4e3e | 370 | if (diag224(diag224_cpu_names)) { |
237d6e68 | 371 | free_page((unsigned long) diag224_cpu_names); |
b8e660b8 | 372 | return -EOPNOTSUPP; |
c41d4e3e | 373 | } |
24bbb1fa MH |
374 | EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16); |
375 | return 0; | |
376 | } | |
377 | ||
378 | static void diag224_delete_name_table(void) | |
379 | { | |
237d6e68 | 380 | free_page((unsigned long) diag224_cpu_names); |
24bbb1fa MH |
381 | } |
382 | ||
383 | static int diag224_idx2name(int index, char *name) | |
384 | { | |
e65f30e0 JF |
385 | memcpy(name, diag224_cpu_names + ((index + 1) * DIAG204_CPU_NAME_LEN), |
386 | DIAG204_CPU_NAME_LEN); | |
387 | name[DIAG204_CPU_NAME_LEN] = 0; | |
1d802e24 | 388 | strim(name); |
24bbb1fa MH |
389 | return 0; |
390 | } | |
391 | ||
57b28f66 MH |
392 | struct dbfs_d204_hdr { |
393 | u64 len; /* Length of d204 buffer without header */ | |
394 | u16 version; /* Version of header */ | |
395 | u8 sc; /* Used subcode */ | |
396 | char reserved[53]; | |
397 | } __attribute__ ((packed)); | |
398 | ||
399 | struct dbfs_d204 { | |
400 | struct dbfs_d204_hdr hdr; /* 64 byte header */ | |
401 | char buf[]; /* d204 buffer */ | |
402 | } __attribute__ ((packed)); | |
403 | ||
2fcb3686 | 404 | static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size) |
57b28f66 | 405 | { |
57b28f66 MH |
406 | struct dbfs_d204 *d204; |
407 | int rc, buf_size; | |
2fcb3686 | 408 | void *base; |
57b28f66 | 409 | |
57b28f66 | 410 | buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr); |
dc8a5c99 | 411 | base = vzalloc(buf_size); |
2fcb3686 MH |
412 | if (!base) |
413 | return -ENOMEM; | |
2fcb3686 MH |
414 | d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr); |
415 | rc = diag204_do_store(d204->buf, diag204_buf_pages); | |
416 | if (rc) { | |
417 | vfree(base); | |
418 | return rc; | |
57b28f66 | 419 | } |
57b28f66 MH |
420 | d204->hdr.version = DBFS_D204_HDR_VERSION; |
421 | d204->hdr.len = PAGE_SIZE * diag204_buf_pages; | |
422 | d204->hdr.sc = diag204_store_sc; | |
2fcb3686 MH |
423 | *data = d204; |
424 | *data_free_ptr = base; | |
425 | *size = d204->hdr.len + sizeof(struct dbfs_d204_hdr); | |
57b28f66 MH |
426 | return 0; |
427 | } | |
428 | ||
2fcb3686 MH |
429 | static struct hypfs_dbfs_file dbfs_file_d204 = { |
430 | .name = "diag_204", | |
431 | .data_create = dbfs_d204_create, | |
432 | .data_free = vfree, | |
57b28f66 MH |
433 | }; |
434 | ||
24bbb1fa MH |
435 | __init int hypfs_diag_init(void) |
436 | { | |
437 | int rc; | |
438 | ||
439 | if (diag204_probe()) { | |
f55495ba | 440 | pr_err("The hardware system does not support hypfs\n"); |
24bbb1fa MH |
441 | return -ENODATA; |
442 | } | |
e65f30e0 | 443 | if (diag204_info_type == DIAG204_INFO_EXT) { |
2fcb3686 | 444 | rc = hypfs_dbfs_create_file(&dbfs_file_d204); |
57b28f66 | 445 | if (rc) |
3c8ebca0 | 446 | return rc; |
57b28f66 | 447 | } |
3c8ebca0 MH |
448 | if (MACHINE_IS_LPAR) { |
449 | rc = diag224_get_name_table(); | |
450 | if (rc) { | |
451 | pr_err("The hardware system does not provide all " | |
452 | "functions required by hypfs\n"); | |
453 | debugfs_remove(dbfs_d204_file); | |
454 | return rc; | |
455 | } | |
456 | } | |
457 | return 0; | |
24bbb1fa MH |
458 | } |
459 | ||
1375fc1f | 460 | void hypfs_diag_exit(void) |
24bbb1fa | 461 | { |
57b28f66 | 462 | debugfs_remove(dbfs_d204_file); |
24bbb1fa MH |
463 | diag224_delete_name_table(); |
464 | diag204_free_buffer(); | |
2fcb3686 | 465 | hypfs_dbfs_remove_file(&dbfs_file_d204); |
24bbb1fa MH |
466 | } |
467 | ||
468 | /* | |
469 | * Functions to create the directory structure | |
470 | * ******************************************* | |
471 | */ | |
472 | ||
e334cf4f | 473 | static int hypfs_create_cpu_files(struct dentry *cpus_dir, void *cpu_info) |
24bbb1fa MH |
474 | { |
475 | struct dentry *cpu_dir; | |
476 | char buffer[TMP_SIZE]; | |
477 | void *rc; | |
478 | ||
479 | snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type, | |
480 | cpu_info)); | |
a118cfdf AV |
481 | cpu_dir = hypfs_mkdir(cpus_dir, buffer); |
482 | rc = hypfs_create_u64(cpu_dir, "mgmtime", | |
24bbb1fa MH |
483 | cpu_info__acc_time(diag204_info_type, cpu_info) - |
484 | cpu_info__lp_time(diag204_info_type, cpu_info)); | |
485 | if (IS_ERR(rc)) | |
486 | return PTR_ERR(rc); | |
a118cfdf | 487 | rc = hypfs_create_u64(cpu_dir, "cputime", |
24bbb1fa MH |
488 | cpu_info__lp_time(diag204_info_type, cpu_info)); |
489 | if (IS_ERR(rc)) | |
490 | return PTR_ERR(rc); | |
e65f30e0 | 491 | if (diag204_info_type == DIAG204_INFO_EXT) { |
a118cfdf | 492 | rc = hypfs_create_u64(cpu_dir, "onlinetime", |
24bbb1fa MH |
493 | cpu_info__online_time(diag204_info_type, |
494 | cpu_info)); | |
495 | if (IS_ERR(rc)) | |
496 | return PTR_ERR(rc); | |
497 | } | |
498 | diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer); | |
a118cfdf | 499 | rc = hypfs_create_str(cpu_dir, "type", buffer); |
5eba9bb8 | 500 | return PTR_RET(rc); |
24bbb1fa MH |
501 | } |
502 | ||
e334cf4f | 503 | static void *hypfs_create_lpar_files(struct dentry *systems_dir, void *part_hdr) |
24bbb1fa MH |
504 | { |
505 | struct dentry *cpus_dir; | |
506 | struct dentry *lpar_dir; | |
e65f30e0 | 507 | char lpar_name[DIAG204_LPAR_NAME_LEN + 1]; |
24bbb1fa MH |
508 | void *cpu_info; |
509 | int i; | |
510 | ||
511 | part_hdr__part_name(diag204_info_type, part_hdr, lpar_name); | |
e65f30e0 | 512 | lpar_name[DIAG204_LPAR_NAME_LEN] = 0; |
a118cfdf | 513 | lpar_dir = hypfs_mkdir(systems_dir, lpar_name); |
24bbb1fa MH |
514 | if (IS_ERR(lpar_dir)) |
515 | return lpar_dir; | |
a118cfdf | 516 | cpus_dir = hypfs_mkdir(lpar_dir, "cpus"); |
24bbb1fa MH |
517 | if (IS_ERR(cpus_dir)) |
518 | return cpus_dir; | |
519 | cpu_info = part_hdr + part_hdr__size(diag204_info_type); | |
520 | for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) { | |
521 | int rc; | |
e334cf4f | 522 | rc = hypfs_create_cpu_files(cpus_dir, cpu_info); |
24bbb1fa MH |
523 | if (rc) |
524 | return ERR_PTR(rc); | |
525 | cpu_info += cpu_info__size(diag204_info_type); | |
526 | } | |
527 | return cpu_info; | |
528 | } | |
529 | ||
e334cf4f | 530 | static int hypfs_create_phys_cpu_files(struct dentry *cpus_dir, void *cpu_info) |
24bbb1fa MH |
531 | { |
532 | struct dentry *cpu_dir; | |
533 | char buffer[TMP_SIZE]; | |
534 | void *rc; | |
535 | ||
536 | snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type, | |
537 | cpu_info)); | |
a118cfdf | 538 | cpu_dir = hypfs_mkdir(cpus_dir, buffer); |
24bbb1fa MH |
539 | if (IS_ERR(cpu_dir)) |
540 | return PTR_ERR(cpu_dir); | |
a118cfdf | 541 | rc = hypfs_create_u64(cpu_dir, "mgmtime", |
24bbb1fa MH |
542 | phys_cpu__mgm_time(diag204_info_type, cpu_info)); |
543 | if (IS_ERR(rc)) | |
544 | return PTR_ERR(rc); | |
545 | diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer); | |
a118cfdf | 546 | rc = hypfs_create_str(cpu_dir, "type", buffer); |
5eba9bb8 | 547 | return PTR_RET(rc); |
24bbb1fa MH |
548 | } |
549 | ||
e334cf4f | 550 | static void *hypfs_create_phys_files(struct dentry *parent_dir, void *phys_hdr) |
24bbb1fa MH |
551 | { |
552 | int i; | |
553 | void *cpu_info; | |
554 | struct dentry *cpus_dir; | |
555 | ||
a118cfdf | 556 | cpus_dir = hypfs_mkdir(parent_dir, "cpus"); |
24bbb1fa MH |
557 | if (IS_ERR(cpus_dir)) |
558 | return cpus_dir; | |
559 | cpu_info = phys_hdr + phys_hdr__size(diag204_info_type); | |
560 | for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) { | |
561 | int rc; | |
e334cf4f | 562 | rc = hypfs_create_phys_cpu_files(cpus_dir, cpu_info); |
24bbb1fa MH |
563 | if (rc) |
564 | return ERR_PTR(rc); | |
565 | cpu_info += phys_cpu__size(diag204_info_type); | |
566 | } | |
567 | return cpu_info; | |
568 | } | |
569 | ||
e334cf4f | 570 | int hypfs_diag_create_files(struct dentry *root) |
24bbb1fa MH |
571 | { |
572 | struct dentry *systems_dir, *hyp_dir; | |
573 | void *time_hdr, *part_hdr; | |
574 | int i, rc; | |
575 | void *buffer, *ptr; | |
576 | ||
577 | buffer = diag204_store(); | |
578 | if (IS_ERR(buffer)) | |
579 | return PTR_ERR(buffer); | |
580 | ||
a118cfdf | 581 | systems_dir = hypfs_mkdir(root, "systems"); |
24bbb1fa MH |
582 | if (IS_ERR(systems_dir)) { |
583 | rc = PTR_ERR(systems_dir); | |
584 | goto err_out; | |
585 | } | |
586 | time_hdr = (struct x_info_blk_hdr *)buffer; | |
587 | part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type); | |
588 | for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) { | |
e334cf4f | 589 | part_hdr = hypfs_create_lpar_files(systems_dir, part_hdr); |
24bbb1fa MH |
590 | if (IS_ERR(part_hdr)) { |
591 | rc = PTR_ERR(part_hdr); | |
592 | goto err_out; | |
593 | } | |
594 | } | |
e65f30e0 JF |
595 | if (info_blk_hdr__flags(diag204_info_type, time_hdr) & |
596 | DIAG204_LPAR_PHYS_FLG) { | |
e334cf4f | 597 | ptr = hypfs_create_phys_files(root, part_hdr); |
24bbb1fa MH |
598 | if (IS_ERR(ptr)) { |
599 | rc = PTR_ERR(ptr); | |
600 | goto err_out; | |
601 | } | |
602 | } | |
a118cfdf | 603 | hyp_dir = hypfs_mkdir(root, "hyp"); |
24bbb1fa MH |
604 | if (IS_ERR(hyp_dir)) { |
605 | rc = PTR_ERR(hyp_dir); | |
606 | goto err_out; | |
607 | } | |
a118cfdf | 608 | ptr = hypfs_create_str(hyp_dir, "type", "LPAR Hypervisor"); |
24bbb1fa MH |
609 | if (IS_ERR(ptr)) { |
610 | rc = PTR_ERR(ptr); | |
611 | goto err_out; | |
612 | } | |
613 | rc = 0; | |
614 | ||
615 | err_out: | |
616 | return rc; | |
617 | } |