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Commit | Line | Data |
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ff6b8ea6 | 1 | /* |
ff6b8ea6 MH |
2 | * ipl/reipl/dump support for Linux on s390. |
3 | * | |
a53c8fab | 4 | * Copyright IBM Corp. 2005, 2012 |
ff6b8ea6 MH |
5 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
6 | * Heiko Carstens <heiko.carstens@de.ibm.com> | |
7 | * Volker Sameske <sameske@de.ibm.com> | |
8 | */ | |
9 | ||
10 | #include <linux/types.h> | |
3994a52b PG |
11 | #include <linux/export.h> |
12 | #include <linux/init.h> | |
ff6b8ea6 MH |
13 | #include <linux/device.h> |
14 | #include <linux/delay.h> | |
15 | #include <linux/reboot.h> | |
03a4d208 | 16 | #include <linux/ctype.h> |
0788fea4 | 17 | #include <linux/fs.h> |
5a0e3ad6 | 18 | #include <linux/gfp.h> |
60a0c68d | 19 | #include <linux/crash_dump.h> |
3ab121ab | 20 | #include <linux/debug_locks.h> |
1ec2772e | 21 | #include <asm/diag.h> |
46b05d26 | 22 | #include <asm/ipl.h> |
ff6b8ea6 MH |
23 | #include <asm/smp.h> |
24 | #include <asm/setup.h> | |
25 | #include <asm/cpcmd.h> | |
26 | #include <asm/cio.h> | |
03a4d208 | 27 | #include <asm/ebcdic.h> |
15e9b586 | 28 | #include <asm/reset.h> |
ab14de6c | 29 | #include <asm/sclp.h> |
159d1ff8 | 30 | #include <asm/checksum.h> |
3ab121ab | 31 | #include <asm/debug.h> |
4857d4bb | 32 | #include <asm/os_info.h> |
638ad34a | 33 | #include "entry.h" |
ff6b8ea6 MH |
34 | |
35 | #define IPL_PARM_BLOCK_VERSION 0 | |
03a4d208 | 36 | |
411ed322 MH |
37 | #define IPL_UNKNOWN_STR "unknown" |
38 | #define IPL_CCW_STR "ccw" | |
39 | #define IPL_FCP_STR "fcp" | |
40 | #define IPL_FCP_DUMP_STR "fcp_dump" | |
41 | #define IPL_NSS_STR "nss" | |
615b04b3 | 42 | |
99ca4e58 MH |
43 | #define DUMP_CCW_STR "ccw" |
44 | #define DUMP_FCP_STR "fcp" | |
45 | #define DUMP_NONE_STR "none" | |
46 | ||
47 | /* | |
48 | * Four shutdown trigger types are supported: | |
49 | * - panic | |
50 | * - halt | |
51 | * - power off | |
52 | * - reipl | |
7dd6b334 | 53 | * - restart |
99ca4e58 MH |
54 | */ |
55 | #define ON_PANIC_STR "on_panic" | |
56 | #define ON_HALT_STR "on_halt" | |
57 | #define ON_POFF_STR "on_poff" | |
58 | #define ON_REIPL_STR "on_reboot" | |
7dd6b334 | 59 | #define ON_RESTART_STR "on_restart" |
99ca4e58 MH |
60 | |
61 | struct shutdown_action; | |
62 | struct shutdown_trigger { | |
63 | char *name; | |
64 | struct shutdown_action *action; | |
65 | }; | |
66 | ||
67 | /* | |
099b7651 | 68 | * The following shutdown action types are supported: |
99ca4e58 MH |
69 | */ |
70 | #define SHUTDOWN_ACTION_IPL_STR "ipl" | |
71 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" | |
72 | #define SHUTDOWN_ACTION_DUMP_STR "dump" | |
73 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" | |
74 | #define SHUTDOWN_ACTION_STOP_STR "stop" | |
099b7651 | 75 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
99ca4e58 MH |
76 | |
77 | struct shutdown_action { | |
78 | char *name; | |
79 | void (*fn) (struct shutdown_trigger *trigger); | |
80 | int (*init) (void); | |
81088819 | 81 | int init_rc; |
99ca4e58 MH |
82 | }; |
83 | ||
ff6b8ea6 MH |
84 | static char *ipl_type_str(enum ipl_type type) |
85 | { | |
86 | switch (type) { | |
ff6b8ea6 MH |
87 | case IPL_TYPE_CCW: |
88 | return IPL_CCW_STR; | |
89 | case IPL_TYPE_FCP: | |
90 | return IPL_FCP_STR; | |
411ed322 MH |
91 | case IPL_TYPE_FCP_DUMP: |
92 | return IPL_FCP_DUMP_STR; | |
fe355b7f HY |
93 | case IPL_TYPE_NSS: |
94 | return IPL_NSS_STR; | |
ff6b8ea6 MH |
95 | case IPL_TYPE_UNKNOWN: |
96 | default: | |
97 | return IPL_UNKNOWN_STR; | |
98 | } | |
99 | } | |
100 | ||
411ed322 MH |
101 | enum dump_type { |
102 | DUMP_TYPE_NONE = 1, | |
103 | DUMP_TYPE_CCW = 2, | |
104 | DUMP_TYPE_FCP = 4, | |
105 | }; | |
106 | ||
411ed322 MH |
107 | static char *dump_type_str(enum dump_type type) |
108 | { | |
109 | switch (type) { | |
110 | case DUMP_TYPE_NONE: | |
111 | return DUMP_NONE_STR; | |
112 | case DUMP_TYPE_CCW: | |
113 | return DUMP_CCW_STR; | |
114 | case DUMP_TYPE_FCP: | |
115 | return DUMP_FCP_STR; | |
116 | default: | |
117 | return NULL; | |
118 | } | |
119 | } | |
120 | ||
121 | /* | |
122 | * Must be in data section since the bss section | |
123 | * is not cleared when these are accessed. | |
124 | */ | |
72a9b02d HC |
125 | static u8 ipl_ssid __section(.data) = 0; |
126 | static u16 ipl_devno __section(.data) = 0; | |
127 | u32 ipl_flags __section(.data) = 0; | |
411ed322 | 128 | |
ff6b8ea6 | 129 | enum ipl_method { |
411ed322 MH |
130 | REIPL_METHOD_CCW_CIO, |
131 | REIPL_METHOD_CCW_DIAG, | |
132 | REIPL_METHOD_CCW_VM, | |
133 | REIPL_METHOD_FCP_RO_DIAG, | |
134 | REIPL_METHOD_FCP_RW_DIAG, | |
135 | REIPL_METHOD_FCP_RO_VM, | |
136 | REIPL_METHOD_FCP_DUMP, | |
137 | REIPL_METHOD_NSS, | |
a0443fbb | 138 | REIPL_METHOD_NSS_DIAG, |
411ed322 MH |
139 | REIPL_METHOD_DEFAULT, |
140 | }; | |
141 | ||
142 | enum dump_method { | |
143 | DUMP_METHOD_NONE, | |
144 | DUMP_METHOD_CCW_CIO, | |
145 | DUMP_METHOD_CCW_DIAG, | |
146 | DUMP_METHOD_CCW_VM, | |
147 | DUMP_METHOD_FCP_DIAG, | |
ff6b8ea6 MH |
148 | }; |
149 | ||
ff6b8ea6 MH |
150 | static int diag308_set_works = 0; |
151 | ||
a0443fbb HB |
152 | static struct ipl_parameter_block ipl_block; |
153 | ||
ff6b8ea6 | 154 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
fe355b7f | 155 | |
ff6b8ea6 | 156 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
411ed322 | 157 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
ff6b8ea6 MH |
158 | static struct ipl_parameter_block *reipl_block_fcp; |
159 | static struct ipl_parameter_block *reipl_block_ccw; | |
a0443fbb | 160 | static struct ipl_parameter_block *reipl_block_nss; |
099b7651 | 161 | static struct ipl_parameter_block *reipl_block_actual; |
fe355b7f | 162 | |
411ed322 MH |
163 | static int dump_capabilities = DUMP_TYPE_NONE; |
164 | static enum dump_type dump_type = DUMP_TYPE_NONE; | |
165 | static enum dump_method dump_method = DUMP_METHOD_NONE; | |
ff6b8ea6 MH |
166 | static struct ipl_parameter_block *dump_block_fcp; |
167 | static struct ipl_parameter_block *dump_block_ccw; | |
168 | ||
05dd2530 HC |
169 | static struct sclp_ipl_info sclp_ipl_info; |
170 | ||
1ec2772e | 171 | static inline int __diag308(unsigned long subcode, void *addr) |
ff6b8ea6 | 172 | { |
94c12cc7 | 173 | register unsigned long _addr asm("0") = (unsigned long) addr; |
ff6b8ea6 MH |
174 | register unsigned long _rc asm("1") = 0; |
175 | ||
94c12cc7 MS |
176 | asm volatile( |
177 | " diag %0,%2,0x308\n" | |
6c22c986 | 178 | "0: nopr %%r7\n" |
94c12cc7 | 179 | EX_TABLE(0b,0b) |
ff6b8ea6 | 180 | : "+d" (_addr), "+d" (_rc) |
94c12cc7 | 181 | : "d" (subcode) : "cc", "memory"); |
ff6b8ea6 MH |
182 | return _rc; |
183 | } | |
1ec2772e MS |
184 | |
185 | int diag308(unsigned long subcode, void *addr) | |
186 | { | |
187 | diag_stat_inc(DIAG_STAT_X308); | |
188 | return __diag308(subcode, addr); | |
189 | } | |
411ed322 | 190 | EXPORT_SYMBOL_GPL(diag308); |
ff6b8ea6 MH |
191 | |
192 | /* SYSFS */ | |
193 | ||
3be7ae63 | 194 | #define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ |
9b949165 GKH |
195 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
196 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
197 | char *page) \ |
198 | { \ | |
3be7ae63 SO |
199 | return snprintf(page, PAGE_SIZE, _format, ##args); \ |
200 | } | |
201 | ||
18e22a17 SO |
202 | #define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ |
203 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ | |
204 | struct kobj_attribute *attr, \ | |
205 | const char *buf, size_t len) \ | |
206 | { \ | |
207 | unsigned long long ssid, devno; \ | |
208 | \ | |
209 | if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ | |
210 | return -EINVAL; \ | |
211 | \ | |
212 | if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ | |
213 | return -EINVAL; \ | |
214 | \ | |
215 | _ipl_blk.ssid = ssid; \ | |
216 | _ipl_blk.devno = devno; \ | |
217 | return len; \ | |
218 | } | |
219 | ||
220 | #define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ | |
221 | IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ | |
222 | _ipl_blk.ssid, _ipl_blk.devno); \ | |
223 | IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ | |
224 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ | |
225 | __ATTR(_name, (S_IRUGO | S_IWUSR), \ | |
226 | sys_##_prefix##_##_name##_show, \ | |
227 | sys_##_prefix##_##_name##_store) \ | |
228 | ||
3be7ae63 SO |
229 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ |
230 | IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ | |
9b949165 | 231 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
3be7ae63 | 232 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL) |
ff6b8ea6 MH |
233 | |
234 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ | |
3be7ae63 | 235 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ |
9b949165 GKH |
236 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
237 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
238 | const char *buf, size_t len) \ |
239 | { \ | |
240 | unsigned long long value; \ | |
241 | if (sscanf(buf, _fmt_in, &value) != 1) \ | |
242 | return -EINVAL; \ | |
243 | _value = value; \ | |
244 | return len; \ | |
245 | } \ | |
9b949165 | 246 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
247 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
248 | sys_##_prefix##_##_name##_show, \ | |
3be7ae63 | 249 | sys_##_prefix##_##_name##_store) |
ff6b8ea6 | 250 | |
fe355b7f | 251 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
3be7ae63 | 252 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ |
9b949165 GKH |
253 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
254 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
255 | const char *buf, size_t len) \ |
256 | { \ | |
99ca4e58 | 257 | strncpy(_value, buf, sizeof(_value) - 1); \ |
1d802e24 | 258 | strim(_value); \ |
fe355b7f HY |
259 | return len; \ |
260 | } \ | |
9b949165 | 261 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
fe355b7f HY |
262 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
263 | sys_##_prefix##_##_name##_show, \ | |
3be7ae63 | 264 | sys_##_prefix##_##_name##_store) |
fe355b7f | 265 | |
ff6b8ea6 MH |
266 | static void make_attrs_ro(struct attribute **attrs) |
267 | { | |
268 | while (*attrs) { | |
269 | (*attrs)->mode = S_IRUGO; | |
270 | attrs++; | |
271 | } | |
272 | } | |
273 | ||
274 | /* | |
275 | * ipl section | |
276 | */ | |
277 | ||
411ed322 | 278 | static __init enum ipl_type get_ipl_type(void) |
ff6b8ea6 MH |
279 | { |
280 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
281 | ||
fe355b7f HY |
282 | if (ipl_flags & IPL_NSS_VALID) |
283 | return IPL_TYPE_NSS; | |
e87bfe51 | 284 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
ff6b8ea6 | 285 | return IPL_TYPE_UNKNOWN; |
e87bfe51 | 286 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
ff6b8ea6 MH |
287 | return IPL_TYPE_CCW; |
288 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) | |
289 | return IPL_TYPE_UNKNOWN; | |
290 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) | |
291 | return IPL_TYPE_UNKNOWN; | |
411ed322 MH |
292 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
293 | return IPL_TYPE_FCP_DUMP; | |
ff6b8ea6 MH |
294 | return IPL_TYPE_FCP; |
295 | } | |
296 | ||
411ed322 MH |
297 | struct ipl_info ipl_info; |
298 | EXPORT_SYMBOL_GPL(ipl_info); | |
299 | ||
9b949165 GKH |
300 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
301 | char *page) | |
ff6b8ea6 | 302 | { |
411ed322 | 303 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
ff6b8ea6 MH |
304 | } |
305 | ||
9b949165 | 306 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
ff6b8ea6 | 307 | |
a0443fbb | 308 | /* VM IPL PARM routines */ |
c4736d96 MS |
309 | static size_t reipl_get_ascii_vmparm(char *dest, size_t size, |
310 | const struct ipl_parameter_block *ipb) | |
a0443fbb HB |
311 | { |
312 | int i; | |
684d2fd4 | 313 | size_t len; |
a0443fbb HB |
314 | char has_lowercase = 0; |
315 | ||
684d2fd4 | 316 | len = 0; |
a0443fbb HB |
317 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
318 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { | |
319 | ||
684d2fd4 | 320 | len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len); |
a0443fbb HB |
321 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
322 | /* If at least one character is lowercase, we assume mixed | |
323 | * case; otherwise we convert everything to lowercase. | |
324 | */ | |
325 | for (i = 0; i < len; i++) | |
326 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ | |
327 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ | |
328 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ | |
329 | has_lowercase = 1; | |
330 | break; | |
331 | } | |
332 | if (!has_lowercase) | |
333 | EBC_TOLOWER(dest, len); | |
334 | EBCASC(dest, len); | |
335 | } | |
336 | dest[len] = 0; | |
684d2fd4 HB |
337 | |
338 | return len; | |
a0443fbb HB |
339 | } |
340 | ||
684d2fd4 | 341 | size_t append_ipl_vmparm(char *dest, size_t size) |
a0443fbb | 342 | { |
684d2fd4 HB |
343 | size_t rc; |
344 | ||
345 | rc = 0; | |
a0443fbb | 346 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
684d2fd4 | 347 | rc = reipl_get_ascii_vmparm(dest, size, &ipl_block); |
a0443fbb HB |
348 | else |
349 | dest[0] = 0; | |
684d2fd4 | 350 | return rc; |
a0443fbb HB |
351 | } |
352 | ||
353 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, | |
354 | struct kobj_attribute *attr, char *page) | |
355 | { | |
356 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; | |
357 | ||
684d2fd4 | 358 | append_ipl_vmparm(parm, sizeof(parm)); |
a0443fbb HB |
359 | return sprintf(page, "%s\n", parm); |
360 | } | |
361 | ||
684d2fd4 HB |
362 | static size_t scpdata_length(const char* buf, size_t count) |
363 | { | |
364 | while (count) { | |
365 | if (buf[count - 1] != '\0' && buf[count - 1] != ' ') | |
366 | break; | |
367 | count--; | |
368 | } | |
369 | return count; | |
370 | } | |
371 | ||
c4736d96 MS |
372 | static size_t reipl_append_ascii_scpdata(char *dest, size_t size, |
373 | const struct ipl_parameter_block *ipb) | |
684d2fd4 HB |
374 | { |
375 | size_t count; | |
376 | size_t i; | |
18d00acf | 377 | int has_lowercase; |
684d2fd4 HB |
378 | |
379 | count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data, | |
380 | ipb->ipl_info.fcp.scp_data_len)); | |
381 | if (!count) | |
382 | goto out; | |
383 | ||
18d00acf HB |
384 | has_lowercase = 0; |
385 | for (i = 0; i < count; i++) { | |
684d2fd4 HB |
386 | if (!isascii(ipb->ipl_info.fcp.scp_data[i])) { |
387 | count = 0; | |
388 | goto out; | |
389 | } | |
18d00acf HB |
390 | if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i])) |
391 | has_lowercase = 1; | |
392 | } | |
684d2fd4 | 393 | |
18d00acf HB |
394 | if (has_lowercase) |
395 | memcpy(dest, ipb->ipl_info.fcp.scp_data, count); | |
396 | else | |
397 | for (i = 0; i < count; i++) | |
398 | dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]); | |
684d2fd4 HB |
399 | out: |
400 | dest[count] = '\0'; | |
401 | return count; | |
402 | } | |
403 | ||
404 | size_t append_ipl_scpdata(char *dest, size_t len) | |
405 | { | |
406 | size_t rc; | |
407 | ||
408 | rc = 0; | |
409 | if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP) | |
410 | rc = reipl_append_ascii_scpdata(dest, len, &ipl_block); | |
411 | else | |
412 | dest[0] = 0; | |
413 | return rc; | |
414 | } | |
415 | ||
416 | ||
a0443fbb HB |
417 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
418 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); | |
419 | ||
9b949165 GKH |
420 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
421 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
422 | { |
423 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
424 | ||
411ed322 | 425 | switch (ipl_info.type) { |
ff6b8ea6 | 426 | case IPL_TYPE_CCW: |
18e22a17 | 427 | return sprintf(page, "0.%x.%04x\n", ipl_ssid, ipl_devno); |
ff6b8ea6 | 428 | case IPL_TYPE_FCP: |
411ed322 | 429 | case IPL_TYPE_FCP_DUMP: |
ff6b8ea6 MH |
430 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
431 | default: | |
432 | return 0; | |
433 | } | |
434 | } | |
435 | ||
9b949165 | 436 | static struct kobj_attribute sys_ipl_device_attr = |
ff6b8ea6 MH |
437 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
438 | ||
2c3c8bea CW |
439 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
440 | struct bin_attribute *attr, char *buf, | |
441 | loff_t off, size_t count) | |
ff6b8ea6 | 442 | { |
0788fea4 AM |
443 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
444 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 | 445 | } |
22d557ab SO |
446 | static struct bin_attribute ipl_parameter_attr = |
447 | __BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL, | |
448 | PAGE_SIZE); | |
ff6b8ea6 | 449 | |
2c3c8bea CW |
450 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
451 | struct bin_attribute *attr, char *buf, | |
452 | loff_t off, size_t count) | |
ff6b8ea6 MH |
453 | { |
454 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
455 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
456 | ||
0788fea4 | 457 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 | 458 | } |
22d557ab SO |
459 | static struct bin_attribute ipl_scp_data_attr = |
460 | __BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE); | |
ff6b8ea6 | 461 | |
22d557ab SO |
462 | static struct bin_attribute *ipl_fcp_bin_attrs[] = { |
463 | &ipl_parameter_attr, | |
464 | &ipl_scp_data_attr, | |
465 | NULL, | |
ff6b8ea6 MH |
466 | }; |
467 | ||
468 | /* FCP ipl device attributes */ | |
469 | ||
470 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
471 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
472 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
473 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
474 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
475 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
476 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
477 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
478 | ||
9b949165 GKH |
479 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
480 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
481 | { |
482 | char loadparm[LOADPARM_LEN + 1] = {}; | |
483 | ||
05dd2530 | 484 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 485 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 486 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 487 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 488 | strim(loadparm); |
03a4d208 MH |
489 | return sprintf(page, "%s\n", loadparm); |
490 | } | |
491 | ||
9b949165 | 492 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
493 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
494 | ||
69928601 MH |
495 | static struct attribute *ipl_fcp_attrs[] = { |
496 | &sys_ipl_type_attr.attr, | |
497 | &sys_ipl_device_attr.attr, | |
498 | &sys_ipl_fcp_wwpn_attr.attr, | |
499 | &sys_ipl_fcp_lun_attr.attr, | |
500 | &sys_ipl_fcp_bootprog_attr.attr, | |
501 | &sys_ipl_fcp_br_lba_attr.attr, | |
502 | &sys_ipl_ccw_loadparm_attr.attr, | |
503 | NULL, | |
504 | }; | |
505 | ||
506 | static struct attribute_group ipl_fcp_attr_group = { | |
507 | .attrs = ipl_fcp_attrs, | |
22d557ab | 508 | .bin_attrs = ipl_fcp_bin_attrs, |
69928601 MH |
509 | }; |
510 | ||
511 | /* CCW ipl device attributes */ | |
512 | ||
a0443fbb HB |
513 | static struct attribute *ipl_ccw_attrs_vm[] = { |
514 | &sys_ipl_type_attr.attr, | |
515 | &sys_ipl_device_attr.attr, | |
516 | &sys_ipl_ccw_loadparm_attr.attr, | |
517 | &sys_ipl_vm_parm_attr.attr, | |
518 | NULL, | |
519 | }; | |
520 | ||
521 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
522 | &sys_ipl_type_attr.attr, |
523 | &sys_ipl_device_attr.attr, | |
03a4d208 | 524 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
525 | NULL, |
526 | }; | |
527 | ||
a0443fbb HB |
528 | static struct attribute_group ipl_ccw_attr_group_vm = { |
529 | .attrs = ipl_ccw_attrs_vm, | |
530 | }; | |
531 | ||
532 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
533 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
534 | }; |
535 | ||
fe355b7f HY |
536 | /* NSS ipl device attributes */ |
537 | ||
538 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
539 | ||
540 | static struct attribute *ipl_nss_attrs[] = { | |
541 | &sys_ipl_type_attr.attr, | |
542 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
543 | &sys_ipl_ccw_loadparm_attr.attr, |
544 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
545 | NULL, |
546 | }; | |
547 | ||
548 | static struct attribute_group ipl_nss_attr_group = { | |
549 | .attrs = ipl_nss_attrs, | |
550 | }; | |
551 | ||
ff6b8ea6 MH |
552 | /* UNKNOWN ipl device attributes */ |
553 | ||
554 | static struct attribute *ipl_unknown_attrs[] = { | |
555 | &sys_ipl_type_attr.attr, | |
556 | NULL, | |
557 | }; | |
558 | ||
559 | static struct attribute_group ipl_unknown_attr_group = { | |
560 | .attrs = ipl_unknown_attrs, | |
561 | }; | |
562 | ||
d91885be | 563 | static struct kset *ipl_kset; |
ff6b8ea6 | 564 | |
2c2df118 | 565 | static void __ipl_run(void *unused) |
99ca4e58 | 566 | { |
0599eead | 567 | diag308(DIAG308_LOAD_CLEAR, NULL); |
99ca4e58 MH |
568 | if (MACHINE_IS_VM) |
569 | __cpcmd("IPL", NULL, 0, NULL); | |
570 | else if (ipl_info.type == IPL_TYPE_CCW) | |
571 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
572 | } | |
573 | ||
2c2df118 HC |
574 | static void ipl_run(struct shutdown_trigger *trigger) |
575 | { | |
8b646bd7 | 576 | smp_call_ipl_cpu(__ipl_run, NULL); |
2c2df118 HC |
577 | } |
578 | ||
2bc89b5e | 579 | static int __init ipl_init(void) |
99ca4e58 MH |
580 | { |
581 | int rc; | |
582 | ||
583 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
584 | if (!ipl_kset) { | |
585 | rc = -ENOMEM; | |
586 | goto out; | |
587 | } | |
588 | switch (ipl_info.type) { | |
589 | case IPL_TYPE_CCW: | |
a0443fbb HB |
590 | if (MACHINE_IS_VM) |
591 | rc = sysfs_create_group(&ipl_kset->kobj, | |
592 | &ipl_ccw_attr_group_vm); | |
593 | else | |
594 | rc = sysfs_create_group(&ipl_kset->kobj, | |
595 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
596 | break; |
597 | case IPL_TYPE_FCP: | |
598 | case IPL_TYPE_FCP_DUMP: | |
22d557ab | 599 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); |
99ca4e58 MH |
600 | break; |
601 | case IPL_TYPE_NSS: | |
602 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
603 | break; | |
604 | default: | |
605 | rc = sysfs_create_group(&ipl_kset->kobj, | |
606 | &ipl_unknown_attr_group); | |
607 | break; | |
608 | } | |
609 | out: | |
610 | if (rc) | |
611 | panic("ipl_init failed: rc = %i\n", rc); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
2bc89b5e HC |
616 | static struct shutdown_action __refdata ipl_action = { |
617 | .name = SHUTDOWN_ACTION_IPL_STR, | |
618 | .fn = ipl_run, | |
619 | .init = ipl_init, | |
620 | }; | |
99ca4e58 | 621 | |
ff6b8ea6 | 622 | /* |
99ca4e58 | 623 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
624 | */ |
625 | ||
a0443fbb HB |
626 | /* VM IPL PARM attributes */ |
627 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
628 | char *page) | |
629 | { | |
630 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
631 | ||
684d2fd4 | 632 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
633 | return sprintf(page, "%s\n", vmparm); |
634 | } | |
635 | ||
636 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
637 | size_t vmparm_max, | |
638 | const char *buf, size_t len) | |
639 | { | |
640 | int i, ip_len; | |
641 | ||
642 | /* ignore trailing newline */ | |
643 | ip_len = len; | |
644 | if ((len > 0) && (buf[len - 1] == '\n')) | |
645 | ip_len--; | |
646 | ||
647 | if (ip_len > vmparm_max) | |
648 | return -EINVAL; | |
649 | ||
650 | /* parm is used to store kernel options, check for common chars */ | |
651 | for (i = 0; i < ip_len; i++) | |
652 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
653 | return -EINVAL; | |
654 | ||
655 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
656 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
657 | if (ip_len > 0) { | |
658 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
659 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
660 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
661 | } else { | |
662 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
663 | } | |
664 | ||
665 | return len; | |
666 | } | |
667 | ||
668 | /* NSS wrapper */ | |
669 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
670 | struct kobj_attribute *attr, char *page) | |
671 | { | |
672 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
673 | } | |
674 | ||
675 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
676 | struct kobj_attribute *attr, | |
677 | const char *buf, size_t len) | |
678 | { | |
679 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
680 | } | |
681 | ||
682 | /* CCW wrapper */ | |
683 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
684 | struct kobj_attribute *attr, char *page) | |
685 | { | |
686 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
687 | } | |
688 | ||
689 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
690 | struct kobj_attribute *attr, | |
691 | const char *buf, size_t len) | |
692 | { | |
693 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
694 | } | |
695 | ||
696 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
697 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
698 | reipl_nss_vmparm_store); | |
699 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
700 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
701 | reipl_ccw_vmparm_store); | |
702 | ||
ff6b8ea6 MH |
703 | /* FCP reipl device attributes */ |
704 | ||
2c3c8bea | 705 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
706 | struct bin_attribute *attr, |
707 | char *buf, loff_t off, size_t count) | |
708 | { | |
709 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
710 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
711 | ||
712 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
713 | } | |
714 | ||
2c3c8bea | 715 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
716 | struct bin_attribute *attr, |
717 | char *buf, loff_t off, size_t count) | |
718 | { | |
e0bedada | 719 | size_t scpdata_len = count; |
684d2fd4 | 720 | size_t padding; |
684d2fd4 | 721 | |
684d2fd4 | 722 | |
e0bedada SO |
723 | if (off) |
724 | return -EINVAL; | |
684d2fd4 | 725 | |
e0bedada | 726 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf, count); |
684d2fd4 HB |
727 | if (scpdata_len % 8) { |
728 | padding = 8 - (scpdata_len % 8); | |
729 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
730 | 0, padding); | |
731 | scpdata_len += padding; | |
732 | } | |
733 | ||
734 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
735 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
736 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
737 | ||
738 | return count; | |
739 | } | |
22d557ab SO |
740 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = |
741 | __BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read, | |
e0bedada | 742 | reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE); |
684d2fd4 | 743 | |
22d557ab SO |
744 | static struct bin_attribute *reipl_fcp_bin_attrs[] = { |
745 | &sys_reipl_fcp_scp_data_attr, | |
746 | NULL, | |
684d2fd4 HB |
747 | }; |
748 | ||
eda4ddf7 | 749 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n", |
ff6b8ea6 | 750 | reipl_block_fcp->ipl_info.fcp.wwpn); |
eda4ddf7 | 751 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n", |
ff6b8ea6 MH |
752 | reipl_block_fcp->ipl_info.fcp.lun); |
753 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
754 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
755 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
756 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
757 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
758 | reipl_block_fcp->ipl_info.fcp.devno); | |
759 | ||
a0443fbb HB |
760 | static void reipl_get_ascii_loadparm(char *loadparm, |
761 | struct ipl_parameter_block *ibp) | |
03a4d208 | 762 | { |
69928601 | 763 | memcpy(loadparm, ibp->hdr.loadparm, LOADPARM_LEN); |
03a4d208 MH |
764 | EBCASC(loadparm, LOADPARM_LEN); |
765 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 766 | strim(loadparm); |
03a4d208 MH |
767 | } |
768 | ||
a0443fbb HB |
769 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
770 | char *page) | |
03a4d208 MH |
771 | { |
772 | char buf[LOADPARM_LEN + 1]; | |
773 | ||
a0443fbb | 774 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
775 | return sprintf(page, "%s\n", buf); |
776 | } | |
777 | ||
a0443fbb HB |
778 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
779 | const char *buf, size_t len) | |
03a4d208 MH |
780 | { |
781 | int i, lp_len; | |
782 | ||
783 | /* ignore trailing newline */ | |
784 | lp_len = len; | |
785 | if ((len > 0) && (buf[len - 1] == '\n')) | |
786 | lp_len--; | |
787 | /* loadparm can have max 8 characters and must not start with a blank */ | |
788 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
789 | return -EINVAL; | |
790 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
791 | for (i = 0; i < lp_len; i++) { | |
792 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
793 | (buf[i] == '.')) | |
794 | continue; | |
795 | return -EINVAL; | |
796 | } | |
797 | /* initialize loadparm with blanks */ | |
69928601 | 798 | memset(ipb->hdr.loadparm, ' ', LOADPARM_LEN); |
03a4d208 | 799 | /* copy and convert to ebcdic */ |
69928601 MH |
800 | memcpy(ipb->hdr.loadparm, buf, lp_len); |
801 | ASCEBC(ipb->hdr.loadparm, LOADPARM_LEN); | |
03a4d208 MH |
802 | return len; |
803 | } | |
804 | ||
69928601 MH |
805 | /* FCP wrapper */ |
806 | static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj, | |
807 | struct kobj_attribute *attr, char *page) | |
808 | { | |
809 | return reipl_generic_loadparm_show(reipl_block_fcp, page); | |
810 | } | |
811 | ||
812 | static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj, | |
813 | struct kobj_attribute *attr, | |
814 | const char *buf, size_t len) | |
815 | { | |
816 | return reipl_generic_loadparm_store(reipl_block_fcp, buf, len); | |
817 | } | |
818 | ||
819 | static struct kobj_attribute sys_reipl_fcp_loadparm_attr = | |
820 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show, | |
821 | reipl_fcp_loadparm_store); | |
822 | ||
823 | static struct attribute *reipl_fcp_attrs[] = { | |
824 | &sys_reipl_fcp_device_attr.attr, | |
825 | &sys_reipl_fcp_wwpn_attr.attr, | |
826 | &sys_reipl_fcp_lun_attr.attr, | |
827 | &sys_reipl_fcp_bootprog_attr.attr, | |
828 | &sys_reipl_fcp_br_lba_attr.attr, | |
829 | &sys_reipl_fcp_loadparm_attr.attr, | |
830 | NULL, | |
831 | }; | |
832 | ||
833 | static struct attribute_group reipl_fcp_attr_group = { | |
834 | .attrs = reipl_fcp_attrs, | |
22d557ab | 835 | .bin_attrs = reipl_fcp_bin_attrs, |
69928601 MH |
836 | }; |
837 | ||
838 | /* CCW reipl device attributes */ | |
18e22a17 | 839 | DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ipl_info.ccw); |
69928601 | 840 | |
a0443fbb HB |
841 | /* NSS wrapper */ |
842 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
843 | struct kobj_attribute *attr, char *page) | |
844 | { | |
845 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
846 | } | |
847 | ||
848 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
849 | struct kobj_attribute *attr, | |
850 | const char *buf, size_t len) | |
851 | { | |
852 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
853 | } | |
854 | ||
855 | /* CCW wrapper */ | |
856 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
857 | struct kobj_attribute *attr, char *page) | |
858 | { | |
859 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
860 | } | |
861 | ||
862 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
863 | struct kobj_attribute *attr, | |
864 | const char *buf, size_t len) | |
865 | { | |
866 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
867 | } | |
868 | ||
9b949165 | 869 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
870 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
871 | reipl_ccw_loadparm_store); | |
872 | ||
873 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
874 | &sys_reipl_ccw_device_attr.attr, | |
875 | &sys_reipl_ccw_loadparm_attr.attr, | |
876 | &sys_reipl_ccw_vmparm_attr.attr, | |
877 | NULL, | |
878 | }; | |
03a4d208 | 879 | |
a0443fbb | 880 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 881 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 882 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
883 | NULL, |
884 | }; | |
885 | ||
a0443fbb | 886 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 887 | .name = IPL_CCW_STR, |
a0443fbb HB |
888 | .attrs = reipl_ccw_attrs_vm, |
889 | }; | |
890 | ||
891 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
892 | .name = IPL_CCW_STR, | |
893 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
894 | }; |
895 | ||
fe355b7f HY |
896 | |
897 | /* NSS reipl device attributes */ | |
a0443fbb HB |
898 | static void reipl_get_ascii_nss_name(char *dst, |
899 | struct ipl_parameter_block *ipb) | |
900 | { | |
901 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
902 | EBCASC(dst, NSS_NAME_SIZE); | |
903 | dst[NSS_NAME_SIZE] = 0; | |
904 | } | |
905 | ||
906 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
907 | struct kobj_attribute *attr, char *page) | |
908 | { | |
909 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
910 | ||
911 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
912 | return sprintf(page, "%s\n", nss_name); | |
913 | } | |
914 | ||
915 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
916 | struct kobj_attribute *attr, | |
917 | const char *buf, size_t len) | |
918 | { | |
919 | int nss_len; | |
920 | ||
921 | /* ignore trailing newline */ | |
922 | nss_len = len; | |
923 | if ((len > 0) && (buf[len - 1] == '\n')) | |
924 | nss_len--; | |
fe355b7f | 925 | |
a0443fbb HB |
926 | if (nss_len > NSS_NAME_SIZE) |
927 | return -EINVAL; | |
928 | ||
929 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
930 | if (nss_len > 0) { | |
931 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
932 | DIAG308_VM_FLAGS_NSS_VALID; | |
933 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
934 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
935 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
936 | } else { | |
937 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
938 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
939 | } | |
940 | ||
941 | return len; | |
942 | } | |
943 | ||
944 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
945 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
946 | reipl_nss_name_store); | |
947 | ||
948 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
949 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
950 | reipl_nss_loadparm_store); | |
fe355b7f HY |
951 | |
952 | static struct attribute *reipl_nss_attrs[] = { | |
953 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
954 | &sys_reipl_nss_loadparm_attr.attr, |
955 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
956 | NULL, |
957 | }; | |
958 | ||
959 | static struct attribute_group reipl_nss_attr_group = { | |
960 | .name = IPL_NSS_STR, | |
961 | .attrs = reipl_nss_attrs, | |
962 | }; | |
963 | ||
4857d4bb MH |
964 | static void set_reipl_block_actual(struct ipl_parameter_block *reipl_block) |
965 | { | |
966 | reipl_block_actual = reipl_block; | |
967 | os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, | |
968 | reipl_block->hdr.len); | |
969 | } | |
970 | ||
ff6b8ea6 MH |
971 | /* reipl type */ |
972 | ||
973 | static int reipl_set_type(enum ipl_type type) | |
974 | { | |
975 | if (!(reipl_capabilities & type)) | |
976 | return -EINVAL; | |
977 | ||
978 | switch(type) { | |
979 | case IPL_TYPE_CCW: | |
48657d22 MH |
980 | if (diag308_set_works) |
981 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
982 | else if (MACHINE_IS_VM) | |
411ed322 | 983 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 984 | else |
411ed322 | 985 | reipl_method = REIPL_METHOD_CCW_CIO; |
4857d4bb | 986 | set_reipl_block_actual(reipl_block_ccw); |
ff6b8ea6 MH |
987 | break; |
988 | case IPL_TYPE_FCP: | |
989 | if (diag308_set_works) | |
411ed322 | 990 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 991 | else if (MACHINE_IS_VM) |
411ed322 | 992 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 993 | else |
411ed322 | 994 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
4857d4bb | 995 | set_reipl_block_actual(reipl_block_fcp); |
411ed322 MH |
996 | break; |
997 | case IPL_TYPE_FCP_DUMP: | |
998 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 999 | break; |
fe355b7f | 1000 | case IPL_TYPE_NSS: |
a0443fbb HB |
1001 | if (diag308_set_works) |
1002 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
1003 | else | |
1004 | reipl_method = REIPL_METHOD_NSS; | |
4857d4bb | 1005 | set_reipl_block_actual(reipl_block_nss); |
411ed322 MH |
1006 | break; |
1007 | case IPL_TYPE_UNKNOWN: | |
1008 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 1009 | break; |
ff6b8ea6 | 1010 | default: |
411ed322 | 1011 | BUG(); |
ff6b8ea6 MH |
1012 | } |
1013 | reipl_type = type; | |
1014 | return 0; | |
1015 | } | |
1016 | ||
9b949165 GKH |
1017 | static ssize_t reipl_type_show(struct kobject *kobj, |
1018 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
1019 | { |
1020 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
1021 | } | |
1022 | ||
9b949165 GKH |
1023 | static ssize_t reipl_type_store(struct kobject *kobj, |
1024 | struct kobj_attribute *attr, | |
1025 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1026 | { |
1027 | int rc = -EINVAL; | |
1028 | ||
1029 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1030 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1031 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1032 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1033 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1034 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1035 | return (rc != 0) ? rc : len; |
1036 | } | |
1037 | ||
9b949165 | 1038 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1039 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1040 | |
d91885be | 1041 | static struct kset *reipl_kset; |
684d2fd4 | 1042 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1043 | |
a0443fbb HB |
1044 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1045 | const enum ipl_method m) | |
1046 | { | |
1047 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1048 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1049 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1050 | size_t pos = 0; | |
1051 | ||
1052 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1053 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1054 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1055 | |
1056 | switch (m) { | |
1057 | case REIPL_METHOD_CCW_VM: | |
1058 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1059 | break; | |
1060 | case REIPL_METHOD_NSS: | |
1061 | pos = sprintf(dst, "IPL %s", nss_name); | |
1062 | break; | |
1063 | default: | |
1064 | break; | |
1065 | } | |
1066 | if (strlen(loadparm) > 0) | |
1067 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1068 | if (strlen(vmparm) > 0) | |
1069 | sprintf(dst + pos, " PARM %s", vmparm); | |
1070 | } | |
1071 | ||
2c2df118 | 1072 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1073 | { |
1074 | struct ccw_dev_id devid; | |
a0443fbb | 1075 | static char buf[128]; |
ff6b8ea6 | 1076 | |
ff6b8ea6 | 1077 | switch (reipl_method) { |
411ed322 | 1078 | case REIPL_METHOD_CCW_CIO: |
18e22a17 | 1079 | devid.ssid = reipl_block_ccw->ipl_info.ccw.ssid; |
ff6b8ea6 | 1080 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
ff6b8ea6 MH |
1081 | reipl_ccw_dev(&devid); |
1082 | break; | |
411ed322 | 1083 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1084 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1085 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1086 | break; |
411ed322 | 1087 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 | 1088 | diag308(DIAG308_SET, reipl_block_ccw); |
4130b28f | 1089 | diag308(DIAG308_LOAD_CLEAR, NULL); |
ff6b8ea6 | 1090 | break; |
411ed322 | 1091 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 | 1092 | diag308(DIAG308_SET, reipl_block_fcp); |
0599eead | 1093 | diag308(DIAG308_LOAD_CLEAR, NULL); |
ff6b8ea6 | 1094 | break; |
411ed322 | 1095 | case REIPL_METHOD_FCP_RO_DIAG: |
0599eead | 1096 | diag308(DIAG308_LOAD_CLEAR, NULL); |
ff6b8ea6 | 1097 | break; |
411ed322 | 1098 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1099 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1100 | break; |
a0443fbb HB |
1101 | case REIPL_METHOD_NSS_DIAG: |
1102 | diag308(DIAG308_SET, reipl_block_nss); | |
0599eead | 1103 | diag308(DIAG308_LOAD_CLEAR, NULL); |
a0443fbb | 1104 | break; |
411ed322 | 1105 | case REIPL_METHOD_NSS: |
a0443fbb | 1106 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1107 | __cpcmd(buf, NULL, 0, NULL); |
1108 | break; | |
411ed322 | 1109 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1110 | if (MACHINE_IS_VM) |
740b5706 | 1111 | __cpcmd("IPL", NULL, 0, NULL); |
0599eead | 1112 | diag308(DIAG308_LOAD_CLEAR, NULL); |
ff6b8ea6 | 1113 | break; |
411ed322 | 1114 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1115 | break; |
ff6b8ea6 | 1116 | } |
208e5591 | 1117 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1118 | } |
1119 | ||
2c2df118 HC |
1120 | static void reipl_run(struct shutdown_trigger *trigger) |
1121 | { | |
8b646bd7 | 1122 | smp_call_ipl_cpu(__reipl_run, NULL); |
2c2df118 HC |
1123 | } |
1124 | ||
a0443fbb | 1125 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1126 | { |
a0443fbb HB |
1127 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1128 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1129 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1130 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1131 | } | |
ff6b8ea6 | 1132 | |
a0443fbb HB |
1133 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1134 | { | |
1135 | /* LOADPARM */ | |
1136 | /* check if read scp info worked and set loadparm */ | |
1137 | if (sclp_ipl_info.is_valid) | |
69928601 | 1138 | memcpy(ipb->hdr.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
a0443fbb HB |
1139 | else |
1140 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
69928601 | 1141 | memset(ipb->hdr.loadparm, 0x40, LOADPARM_LEN); |
a0443fbb HB |
1142 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; |
1143 | ||
1144 | /* VM PARM */ | |
1145 | if (MACHINE_IS_VM && diag308_set_works && | |
1146 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1147 | ||
1148 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1149 | ipb->ipl_info.ccw.vm_parm_len = | |
1150 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1151 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1152 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1153 | } | |
ff6b8ea6 MH |
1154 | } |
1155 | ||
99ca4e58 | 1156 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1157 | { |
1158 | int rc; | |
1159 | ||
99ca4e58 MH |
1160 | if (!MACHINE_IS_VM) |
1161 | return 0; | |
a0443fbb HB |
1162 | |
1163 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1164 | if (!reipl_block_nss) | |
1165 | return -ENOMEM; | |
1166 | ||
1167 | if (!diag308_set_works) | |
1168 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1169 | ||
99ca4e58 | 1170 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1171 | if (rc) |
1172 | return rc; | |
a0443fbb HB |
1173 | |
1174 | reipl_block_ccw_init(reipl_block_nss); | |
1175 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1176 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1177 | ' ', NSS_NAME_SIZE); | |
1178 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1179 | kernel_nss_name, strlen(kernel_nss_name)); | |
1180 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1181 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1182 | DIAG308_VM_FLAGS_NSS_VALID; | |
1183 | ||
1184 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1185 | } | |
1186 | ||
fe355b7f HY |
1187 | reipl_capabilities |= IPL_TYPE_NSS; |
1188 | return 0; | |
1189 | } | |
1190 | ||
ff6b8ea6 MH |
1191 | static int __init reipl_ccw_init(void) |
1192 | { | |
1193 | int rc; | |
1194 | ||
1195 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1196 | if (!reipl_block_ccw) | |
1197 | return -ENOMEM; | |
a0443fbb HB |
1198 | |
1199 | if (MACHINE_IS_VM) { | |
1200 | if (!diag308_set_works) | |
1201 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1202 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1203 | &reipl_ccw_attr_group_vm); | |
1204 | } else { | |
1205 | if(!diag308_set_works) | |
1206 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1207 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1208 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1209 | } |
a0443fbb HB |
1210 | if (rc) |
1211 | return rc; | |
1212 | ||
1213 | reipl_block_ccw_init(reipl_block_ccw); | |
1214 | if (ipl_info.type == IPL_TYPE_CCW) { | |
18e22a17 | 1215 | reipl_block_ccw->ipl_info.ccw.ssid = ipl_ssid; |
ff6b8ea6 | 1216 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1217 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1218 | } | |
1219 | ||
ff6b8ea6 MH |
1220 | reipl_capabilities |= IPL_TYPE_CCW; |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static int __init reipl_fcp_init(void) | |
1225 | { | |
1226 | int rc; | |
1227 | ||
008d2d11 | 1228 | if (!diag308_set_works) { |
684d2fd4 | 1229 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1230 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1231 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1232 | } else | |
008d2d11 MH |
1233 | return 0; |
1234 | } | |
ff6b8ea6 MH |
1235 | |
1236 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1237 | if (!reipl_block_fcp) | |
1238 | return -ENOMEM; | |
684d2fd4 HB |
1239 | |
1240 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1241 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1242 | &reipl_kset->kobj); | |
798620fb | 1243 | if (!reipl_fcp_kset) { |
684d2fd4 HB |
1244 | free_page((unsigned long) reipl_block_fcp); |
1245 | return -ENOMEM; | |
1246 | } | |
1247 | ||
1248 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1249 | if (rc) { |
684d2fd4 HB |
1250 | kset_unregister(reipl_fcp_kset); |
1251 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1252 | return rc; |
1253 | } | |
684d2fd4 | 1254 | |
69928601 | 1255 | if (ipl_info.type == IPL_TYPE_FCP) { |
ff6b8ea6 | 1256 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
69928601 MH |
1257 | /* |
1258 | * Fix loadparm: There are systems where the (SCSI) LOADPARM | |
1259 | * is invalid in the SCSI IPL parameter block, so take it | |
1260 | * always from sclp_ipl_info. | |
1261 | */ | |
1262 | memcpy(reipl_block_fcp->hdr.loadparm, sclp_ipl_info.loadparm, | |
1263 | LOADPARM_LEN); | |
1264 | } else { | |
ff6b8ea6 MH |
1265 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1266 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1267 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1268 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1269 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1270 | } | |
1271 | reipl_capabilities |= IPL_TYPE_FCP; | |
1272 | return 0; | |
1273 | } | |
1274 | ||
4857d4bb MH |
1275 | static int __init reipl_type_init(void) |
1276 | { | |
1277 | enum ipl_type reipl_type = ipl_info.type; | |
1278 | struct ipl_parameter_block *reipl_block; | |
1279 | unsigned long size; | |
1280 | ||
1281 | reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); | |
1282 | if (!reipl_block) | |
1283 | goto out; | |
1284 | /* | |
1285 | * If we have an OS info reipl block, this will be used | |
1286 | */ | |
1287 | if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_FCP) { | |
1288 | memcpy(reipl_block_fcp, reipl_block, size); | |
1289 | reipl_type = IPL_TYPE_FCP; | |
1290 | } else if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_CCW) { | |
1291 | memcpy(reipl_block_ccw, reipl_block, size); | |
1292 | reipl_type = IPL_TYPE_CCW; | |
1293 | } | |
1294 | out: | |
1295 | return reipl_set_type(reipl_type); | |
1296 | } | |
1297 | ||
2bc89b5e | 1298 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1299 | { |
1300 | int rc; | |
1301 | ||
f62ed9e3 | 1302 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1303 | if (!reipl_kset) |
1304 | return -ENOMEM; | |
1305 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1306 | if (rc) { |
d91885be | 1307 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1308 | return rc; |
1309 | } | |
1310 | rc = reipl_ccw_init(); | |
1311 | if (rc) | |
1312 | return rc; | |
1313 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1314 | if (rc) |
1315 | return rc; | |
1316 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1317 | if (rc) |
1318 | return rc; | |
4857d4bb | 1319 | return reipl_type_init(); |
ff6b8ea6 MH |
1320 | } |
1321 | ||
2bc89b5e HC |
1322 | static struct shutdown_action __refdata reipl_action = { |
1323 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1324 | .fn = reipl_run, | |
1325 | .init = reipl_init, | |
1326 | }; | |
99ca4e58 MH |
1327 | |
1328 | /* | |
1329 | * dump shutdown action: Dump Linux on shutdown. | |
1330 | */ | |
1331 | ||
1332 | /* FCP dump device attributes */ | |
1333 | ||
eda4ddf7 | 1334 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", |
99ca4e58 | 1335 | dump_block_fcp->ipl_info.fcp.wwpn); |
eda4ddf7 | 1336 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", |
99ca4e58 MH |
1337 | dump_block_fcp->ipl_info.fcp.lun); |
1338 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1339 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1340 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1341 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1342 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1343 | dump_block_fcp->ipl_info.fcp.devno); | |
1344 | ||
1345 | static struct attribute *dump_fcp_attrs[] = { | |
1346 | &sys_dump_fcp_device_attr.attr, | |
1347 | &sys_dump_fcp_wwpn_attr.attr, | |
1348 | &sys_dump_fcp_lun_attr.attr, | |
1349 | &sys_dump_fcp_bootprog_attr.attr, | |
1350 | &sys_dump_fcp_br_lba_attr.attr, | |
1351 | NULL, | |
1352 | }; | |
1353 | ||
1354 | static struct attribute_group dump_fcp_attr_group = { | |
1355 | .name = IPL_FCP_STR, | |
1356 | .attrs = dump_fcp_attrs, | |
1357 | }; | |
1358 | ||
1359 | /* CCW dump device attributes */ | |
18e22a17 | 1360 | DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ipl_info.ccw); |
99ca4e58 MH |
1361 | |
1362 | static struct attribute *dump_ccw_attrs[] = { | |
1363 | &sys_dump_ccw_device_attr.attr, | |
1364 | NULL, | |
1365 | }; | |
1366 | ||
1367 | static struct attribute_group dump_ccw_attr_group = { | |
1368 | .name = IPL_CCW_STR, | |
1369 | .attrs = dump_ccw_attrs, | |
1370 | }; | |
1371 | ||
1372 | /* dump type */ | |
1373 | ||
1374 | static int dump_set_type(enum dump_type type) | |
1375 | { | |
1376 | if (!(dump_capabilities & type)) | |
1377 | return -EINVAL; | |
1378 | switch (type) { | |
1379 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1380 | if (diag308_set_works) |
1381 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1382 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1383 | dump_method = DUMP_METHOD_CCW_VM; |
1384 | else | |
1385 | dump_method = DUMP_METHOD_CCW_CIO; | |
1386 | break; | |
1387 | case DUMP_TYPE_FCP: | |
1388 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1389 | break; | |
1390 | default: | |
1391 | dump_method = DUMP_METHOD_NONE; | |
1392 | } | |
1393 | dump_type = type; | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | static ssize_t dump_type_show(struct kobject *kobj, | |
1398 | struct kobj_attribute *attr, char *page) | |
1399 | { | |
1400 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1401 | } | |
1402 | ||
1403 | static ssize_t dump_type_store(struct kobject *kobj, | |
1404 | struct kobj_attribute *attr, | |
1405 | const char *buf, size_t len) | |
1406 | { | |
1407 | int rc = -EINVAL; | |
1408 | ||
1409 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1410 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1411 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1412 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1413 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1414 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1415 | return (rc != 0) ? rc : len; | |
1416 | } | |
1417 | ||
1418 | static struct kobj_attribute dump_type_attr = | |
1419 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1420 | ||
1421 | static struct kset *dump_kset; | |
1422 | ||
0894b3ae MH |
1423 | static void diag308_dump(void *dump_block) |
1424 | { | |
1425 | diag308(DIAG308_SET, dump_block); | |
1426 | while (1) { | |
0599eead | 1427 | if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302) |
0894b3ae MH |
1428 | break; |
1429 | udelay_simple(USEC_PER_SEC); | |
1430 | } | |
1431 | } | |
1432 | ||
2c2df118 | 1433 | static void __dump_run(void *unused) |
99ca4e58 MH |
1434 | { |
1435 | struct ccw_dev_id devid; | |
1436 | static char buf[100]; | |
1437 | ||
1438 | switch (dump_method) { | |
1439 | case DUMP_METHOD_CCW_CIO: | |
18e22a17 | 1440 | devid.ssid = dump_block_ccw->ipl_info.ccw.ssid; |
99ca4e58 | 1441 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
99ca4e58 MH |
1442 | reipl_ccw_dev(&devid); |
1443 | break; | |
1444 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1445 | sprintf(buf, "STORE STATUS"); |
1446 | __cpcmd(buf, NULL, 0, NULL); | |
1447 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1448 | __cpcmd(buf, NULL, 0, NULL); | |
1449 | break; | |
1450 | case DUMP_METHOD_CCW_DIAG: | |
0894b3ae | 1451 | diag308_dump(dump_block_ccw); |
99ca4e58 MH |
1452 | break; |
1453 | case DUMP_METHOD_FCP_DIAG: | |
0894b3ae | 1454 | diag308_dump(dump_block_fcp); |
99ca4e58 | 1455 | break; |
2c2df118 HC |
1456 | default: |
1457 | break; | |
99ca4e58 | 1458 | } |
2c2df118 HC |
1459 | } |
1460 | ||
1461 | static void dump_run(struct shutdown_trigger *trigger) | |
1462 | { | |
1463 | if (dump_method == DUMP_METHOD_NONE) | |
1464 | return; | |
1465 | smp_send_stop(); | |
8b646bd7 | 1466 | smp_call_ipl_cpu(__dump_run, NULL); |
99ca4e58 MH |
1467 | } |
1468 | ||
ff6b8ea6 MH |
1469 | static int __init dump_ccw_init(void) |
1470 | { | |
1471 | int rc; | |
1472 | ||
1473 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1474 | if (!dump_block_ccw) | |
1475 | return -ENOMEM; | |
d91885be | 1476 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1477 | if (rc) { |
1478 | free_page((unsigned long)dump_block_ccw); | |
1479 | return rc; | |
1480 | } | |
1481 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1482 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1483 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1484 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1485 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1486 | return 0; |
1487 | } | |
1488 | ||
ff6b8ea6 MH |
1489 | static int __init dump_fcp_init(void) |
1490 | { | |
1491 | int rc; | |
1492 | ||
05dd2530 | 1493 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1494 | return 0; /* LDIPL DUMP is not installed */ |
1495 | if (!diag308_set_works) | |
1496 | return 0; | |
1497 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1498 | if (!dump_block_fcp) | |
1499 | return -ENOMEM; | |
d91885be | 1500 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1501 | if (rc) { |
1502 | free_page((unsigned long)dump_block_fcp); | |
1503 | return rc; | |
1504 | } | |
1505 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1506 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1507 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1508 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1509 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1510 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1511 | return 0; |
1512 | } | |
1513 | ||
2bc89b5e | 1514 | static int __init dump_init(void) |
ff6b8ea6 MH |
1515 | { |
1516 | int rc; | |
1517 | ||
f62ed9e3 | 1518 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1519 | if (!dump_kset) |
1520 | return -ENOMEM; | |
99ca4e58 | 1521 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1522 | if (rc) { |
d91885be | 1523 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1524 | return rc; |
1525 | } | |
1526 | rc = dump_ccw_init(); | |
1527 | if (rc) | |
1528 | return rc; | |
1529 | rc = dump_fcp_init(); | |
1530 | if (rc) | |
1531 | return rc; | |
411ed322 | 1532 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1533 | return 0; |
1534 | } | |
1535 | ||
2bc89b5e HC |
1536 | static struct shutdown_action __refdata dump_action = { |
1537 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1538 | .fn = dump_run, | |
1539 | .init = dump_init, | |
1540 | }; | |
99ca4e58 | 1541 | |
099b7651 FM |
1542 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1543 | { | |
a7df7a94 | 1544 | unsigned long ipib = (unsigned long) reipl_block_actual; |
fbe76568 HC |
1545 | unsigned int csum; |
1546 | ||
90b3baa2 HC |
1547 | csum = (__force unsigned int) |
1548 | csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); | |
fbe76568 HC |
1549 | mem_assign_absolute(S390_lowcore.ipib, ipib); |
1550 | mem_assign_absolute(S390_lowcore.ipib_checksum, csum); | |
099b7651 FM |
1551 | dump_run(trigger); |
1552 | } | |
1553 | ||
1554 | static int __init dump_reipl_init(void) | |
1555 | { | |
1556 | if (!diag308_set_works) | |
1557 | return -EOPNOTSUPP; | |
1558 | else | |
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | static struct shutdown_action __refdata dump_reipl_action = { | |
1563 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1564 | .fn = dump_reipl_run, | |
1565 | .init = dump_reipl_init, | |
1566 | }; | |
1567 | ||
99ca4e58 MH |
1568 | /* |
1569 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1570 | */ | |
1571 | ||
1572 | static char vmcmd_on_reboot[128]; | |
1573 | static char vmcmd_on_panic[128]; | |
1574 | static char vmcmd_on_halt[128]; | |
1575 | static char vmcmd_on_poff[128]; | |
7dd6b334 | 1576 | static char vmcmd_on_restart[128]; |
99ca4e58 MH |
1577 | |
1578 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1579 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1580 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1581 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
7dd6b334 | 1582 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
99ca4e58 MH |
1583 | |
1584 | static struct attribute *vmcmd_attrs[] = { | |
1585 | &sys_vmcmd_on_reboot_attr.attr, | |
1586 | &sys_vmcmd_on_panic_attr.attr, | |
1587 | &sys_vmcmd_on_halt_attr.attr, | |
1588 | &sys_vmcmd_on_poff_attr.attr, | |
7dd6b334 | 1589 | &sys_vmcmd_on_restart_attr.attr, |
99ca4e58 MH |
1590 | NULL, |
1591 | }; | |
1592 | ||
1593 | static struct attribute_group vmcmd_attr_group = { | |
1594 | .attrs = vmcmd_attrs, | |
1595 | }; | |
1596 | ||
1597 | static struct kset *vmcmd_kset; | |
1598 | ||
1599 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1600 | { |
8143adaf | 1601 | char *cmd; |
99ca4e58 MH |
1602 | |
1603 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1604 | cmd = vmcmd_on_reboot; | |
1605 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1606 | cmd = vmcmd_on_panic; | |
1607 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1608 | cmd = vmcmd_on_halt; | |
1609 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1610 | cmd = vmcmd_on_poff; | |
7dd6b334 MH |
1611 | else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
1612 | cmd = vmcmd_on_restart; | |
99ca4e58 MH |
1613 | else |
1614 | return; | |
1615 | ||
1616 | if (strlen(cmd) == 0) | |
1617 | return; | |
8143adaf | 1618 | __cpcmd(cmd, NULL, 0, NULL); |
99ca4e58 MH |
1619 | } |
1620 | ||
1621 | static int vmcmd_init(void) | |
1622 | { | |
1623 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1624 | return -EOPNOTSUPP; |
99ca4e58 MH |
1625 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1626 | if (!vmcmd_kset) | |
1627 | return -ENOMEM; | |
1628 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1629 | } | |
1630 | ||
1631 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1632 | vmcmd_run, vmcmd_init}; | |
1633 | ||
1634 | /* | |
1635 | * stop shutdown action: Stop Linux on shutdown. | |
1636 | */ | |
1637 | ||
1638 | static void stop_run(struct shutdown_trigger *trigger) | |
1639 | { | |
e1202eda MH |
1640 | if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
1641 | strcmp(trigger->name, ON_RESTART_STR) == 0) | |
c6547497 | 1642 | disabled_wait((unsigned long) __builtin_return_address(0)); |
8b646bd7 | 1643 | smp_stop_cpu(); |
99ca4e58 MH |
1644 | } |
1645 | ||
1646 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1647 | stop_run, NULL}; | |
1648 | ||
1649 | /* action list */ | |
1650 | ||
1651 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1652 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1653 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1654 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1655 | ||
1656 | /* | |
1657 | * Trigger section | |
1658 | */ | |
1659 | ||
1660 | static struct kset *shutdown_actions_kset; | |
1661 | ||
1662 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1663 | size_t len) | |
1664 | { | |
1665 | int i; | |
099b7651 | 1666 | |
99ca4e58 | 1667 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1668 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1669 | if (shutdown_actions_list[i]->init_rc) { |
1670 | return shutdown_actions_list[i]->init_rc; | |
1671 | } else { | |
1672 | trigger->action = shutdown_actions_list[i]; | |
1673 | return len; | |
1674 | } | |
99ca4e58 MH |
1675 | } |
1676 | } | |
1677 | return -EINVAL; | |
1678 | } | |
1679 | ||
1680 | /* on reipl */ | |
1681 | ||
1682 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1683 | &reipl_action}; | |
1684 | ||
1685 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1686 | struct kobj_attribute *attr, char *page) | |
1687 | { | |
1688 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1689 | } | |
1690 | ||
1691 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1692 | struct kobj_attribute *attr, | |
1693 | const char *buf, size_t len) | |
1694 | { | |
1695 | return set_trigger(buf, &on_reboot_trigger, len); | |
1696 | } | |
0f024379 | 1697 | static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot); |
99ca4e58 MH |
1698 | |
1699 | static void do_machine_restart(char *__unused) | |
1700 | { | |
1701 | smp_send_stop(); | |
1702 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1703 | reipl_run(NULL); | |
1704 | } | |
1705 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1706 | ||
1707 | /* on panic */ | |
1708 | ||
1709 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1710 | ||
1711 | static ssize_t on_panic_show(struct kobject *kobj, | |
1712 | struct kobj_attribute *attr, char *page) | |
1713 | { | |
1714 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1715 | } | |
1716 | ||
1717 | static ssize_t on_panic_store(struct kobject *kobj, | |
1718 | struct kobj_attribute *attr, | |
1719 | const char *buf, size_t len) | |
1720 | { | |
1721 | return set_trigger(buf, &on_panic_trigger, len); | |
1722 | } | |
0f024379 | 1723 | static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic); |
99ca4e58 MH |
1724 | |
1725 | static void do_panic(void) | |
1726 | { | |
3ab121ab | 1727 | lgr_info_log(); |
99ca4e58 MH |
1728 | on_panic_trigger.action->fn(&on_panic_trigger); |
1729 | stop_run(&on_panic_trigger); | |
1730 | } | |
1731 | ||
7dd6b334 MH |
1732 | /* on restart */ |
1733 | ||
1734 | static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, | |
e1202eda | 1735 | &stop_action}; |
7dd6b334 MH |
1736 | |
1737 | static ssize_t on_restart_show(struct kobject *kobj, | |
1738 | struct kobj_attribute *attr, char *page) | |
1739 | { | |
1740 | return sprintf(page, "%s\n", on_restart_trigger.action->name); | |
1741 | } | |
1742 | ||
1743 | static ssize_t on_restart_store(struct kobject *kobj, | |
1744 | struct kobj_attribute *attr, | |
1745 | const char *buf, size_t len) | |
1746 | { | |
1747 | return set_trigger(buf, &on_restart_trigger, len); | |
1748 | } | |
0f024379 | 1749 | static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart); |
7dd6b334 | 1750 | |
8b646bd7 | 1751 | static void __do_restart(void *ignore) |
7dd6b334 | 1752 | { |
fa7c0043 | 1753 | __arch_local_irq_stosm(0x04); /* enable DAT */ |
7dd6b334 | 1754 | smp_send_stop(); |
60a0c68d MH |
1755 | #ifdef CONFIG_CRASH_DUMP |
1756 | crash_kexec(NULL); | |
1757 | #endif | |
7dd6b334 MH |
1758 | on_restart_trigger.action->fn(&on_restart_trigger); |
1759 | stop_run(&on_restart_trigger); | |
1760 | } | |
1761 | ||
8b646bd7 MS |
1762 | void do_restart(void) |
1763 | { | |
3ab121ab MH |
1764 | tracing_off(); |
1765 | debug_locks_off(); | |
1766 | lgr_info_log(); | |
8b646bd7 MS |
1767 | smp_call_online_cpu(__do_restart, NULL); |
1768 | } | |
1769 | ||
99ca4e58 MH |
1770 | /* on halt */ |
1771 | ||
1772 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1773 | ||
1774 | static ssize_t on_halt_show(struct kobject *kobj, | |
1775 | struct kobj_attribute *attr, char *page) | |
1776 | { | |
1777 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1778 | } | |
1779 | ||
1780 | static ssize_t on_halt_store(struct kobject *kobj, | |
1781 | struct kobj_attribute *attr, | |
1782 | const char *buf, size_t len) | |
1783 | { | |
1784 | return set_trigger(buf, &on_halt_trigger, len); | |
1785 | } | |
0f024379 | 1786 | static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt); |
99ca4e58 MH |
1787 | |
1788 | static void do_machine_halt(void) | |
1789 | { | |
1790 | smp_send_stop(); | |
1791 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1792 | stop_run(&on_halt_trigger); | |
1793 | } | |
1794 | void (*_machine_halt)(void) = do_machine_halt; | |
1795 | ||
1796 | /* on power off */ | |
1797 | ||
1798 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1799 | ||
1800 | static ssize_t on_poff_show(struct kobject *kobj, | |
1801 | struct kobj_attribute *attr, char *page) | |
1802 | { | |
1803 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1804 | } | |
1805 | ||
1806 | static ssize_t on_poff_store(struct kobject *kobj, | |
1807 | struct kobj_attribute *attr, | |
1808 | const char *buf, size_t len) | |
1809 | { | |
1810 | return set_trigger(buf, &on_poff_trigger, len); | |
1811 | } | |
0f024379 | 1812 | static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff); |
99ca4e58 MH |
1813 | |
1814 | static void do_machine_power_off(void) | |
1815 | { | |
1816 | smp_send_stop(); | |
1817 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1818 | stop_run(&on_poff_trigger); | |
1819 | } | |
1820 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1821 | ||
0f024379 SO |
1822 | static struct attribute *shutdown_action_attrs[] = { |
1823 | &on_restart_attr.attr, | |
1824 | &on_reboot_attr.attr, | |
1825 | &on_panic_attr.attr, | |
1826 | &on_halt_attr.attr, | |
1827 | &on_poff_attr.attr, | |
1828 | NULL, | |
1829 | }; | |
1830 | ||
1831 | static struct attribute_group shutdown_action_attr_group = { | |
1832 | .attrs = shutdown_action_attrs, | |
1833 | }; | |
1834 | ||
99ca4e58 MH |
1835 | static void __init shutdown_triggers_init(void) |
1836 | { | |
d91885be | 1837 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1838 | firmware_kobj); |
d91885be | 1839 | if (!shutdown_actions_kset) |
99ca4e58 | 1840 | goto fail; |
0f024379 SO |
1841 | if (sysfs_create_group(&shutdown_actions_kset->kobj, |
1842 | &shutdown_action_attr_group)) | |
7dd6b334 | 1843 | goto fail; |
99ca4e58 MH |
1844 | return; |
1845 | fail: | |
1846 | panic("shutdown_triggers_init failed\n"); | |
1847 | } | |
1848 | ||
1849 | static void __init shutdown_actions_init(void) | |
1850 | { | |
1851 | int i; | |
1852 | ||
1853 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1854 | if (!shutdown_actions_list[i]->init) | |
1855 | continue; | |
81088819 FM |
1856 | shutdown_actions_list[i]->init_rc = |
1857 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1858 | } |
ff6b8ea6 MH |
1859 | } |
1860 | ||
1861 | static int __init s390_ipl_init(void) | |
1862 | { | |
69928601 MH |
1863 | char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40}; |
1864 | ||
d5ab7a34 | 1865 | sclp_early_get_ipl_info(&sclp_ipl_info); |
69928601 MH |
1866 | /* |
1867 | * Fix loadparm: There are systems where the (SCSI) LOADPARM | |
1868 | * returned by read SCP info is invalid (contains EBCDIC blanks) | |
1869 | * when the system has been booted via diag308. In that case we use | |
1870 | * the value from diag308, if available. | |
1871 | * | |
1872 | * There are also systems where diag308 store does not work in | |
1873 | * case the system is booted from HMC. Fortunately in this case | |
1874 | * READ SCP info provides the correct value. | |
1875 | */ | |
1876 | if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && | |
1877 | diag308_set_works) | |
1878 | memcpy(sclp_ipl_info.loadparm, ipl_block.hdr.loadparm, | |
1879 | LOADPARM_LEN); | |
99ca4e58 MH |
1880 | shutdown_actions_init(); |
1881 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1882 | return 0; |
1883 | } | |
1884 | ||
1885 | __initcall(s390_ipl_init); | |
15e9b586 | 1886 | |
99ca4e58 MH |
1887 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1888 | { | |
1889 | int sx, dx; | |
1890 | ||
1891 | dx = 0; | |
1892 | for (sx = 0; src[sx] != 0; sx++) { | |
1893 | if (src[sx] == '"') | |
1894 | continue; | |
1895 | dst[dx++] = src[sx]; | |
1896 | if (dx >= n) | |
1897 | break; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | static int __init vmcmd_on_reboot_setup(char *str) | |
1902 | { | |
1903 | if (!MACHINE_IS_VM) | |
1904 | return 1; | |
1905 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1906 | vmcmd_on_reboot[127] = 0; | |
1907 | on_reboot_trigger.action = &vmcmd_action; | |
1908 | return 1; | |
1909 | } | |
1910 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1911 | ||
1912 | static int __init vmcmd_on_panic_setup(char *str) | |
1913 | { | |
1914 | if (!MACHINE_IS_VM) | |
1915 | return 1; | |
1916 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1917 | vmcmd_on_panic[127] = 0; | |
1918 | on_panic_trigger.action = &vmcmd_action; | |
1919 | return 1; | |
1920 | } | |
1921 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1922 | ||
1923 | static int __init vmcmd_on_halt_setup(char *str) | |
1924 | { | |
1925 | if (!MACHINE_IS_VM) | |
1926 | return 1; | |
1927 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1928 | vmcmd_on_halt[127] = 0; | |
1929 | on_halt_trigger.action = &vmcmd_action; | |
1930 | return 1; | |
1931 | } | |
1932 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1933 | ||
1934 | static int __init vmcmd_on_poff_setup(char *str) | |
1935 | { | |
1936 | if (!MACHINE_IS_VM) | |
1937 | return 1; | |
1938 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1939 | vmcmd_on_poff[127] = 0; | |
1940 | on_poff_trigger.action = &vmcmd_action; | |
1941 | return 1; | |
1942 | } | |
1943 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1944 | ||
1945 | static int on_panic_notify(struct notifier_block *self, | |
1946 | unsigned long event, void *data) | |
1947 | { | |
1948 | do_panic(); | |
1949 | return NOTIFY_OK; | |
1950 | } | |
1951 | ||
1952 | static struct notifier_block on_panic_nb = { | |
1953 | .notifier_call = on_panic_notify, | |
7e9b580e | 1954 | .priority = INT_MIN, |
99ca4e58 MH |
1955 | }; |
1956 | ||
1957 | void __init setup_ipl(void) | |
1958 | { | |
1959 | ipl_info.type = get_ipl_type(); | |
1960 | switch (ipl_info.type) { | |
1961 | case IPL_TYPE_CCW: | |
18e22a17 | 1962 | ipl_info.data.ccw.dev_id.ssid = ipl_ssid; |
99ca4e58 | 1963 | ipl_info.data.ccw.dev_id.devno = ipl_devno; |
99ca4e58 MH |
1964 | break; |
1965 | case IPL_TYPE_FCP: | |
1966 | case IPL_TYPE_FCP_DUMP: | |
18e22a17 | 1967 | ipl_info.data.fcp.dev_id.ssid = 0; |
99ca4e58 MH |
1968 | ipl_info.data.fcp.dev_id.devno = |
1969 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
99ca4e58 MH |
1970 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; |
1971 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1972 | break; | |
1973 | case IPL_TYPE_NSS: | |
1974 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1975 | sizeof(ipl_info.data.nss.name)); | |
1976 | break; | |
1977 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1978 | /* We have no info to copy */ |
1979 | break; | |
1980 | } | |
1981 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1982 | } | |
1983 | ||
a0443fbb HB |
1984 | void __init ipl_update_parameters(void) |
1985 | { | |
3a95e8eb MH |
1986 | int rc; |
1987 | ||
1988 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1989 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1990 | diag308_set_works = 1; |
1991 | } | |
1992 | ||
d543a106 | 1993 | void __init ipl_verify_parameters(void) |
6fc321fd HC |
1994 | { |
1995 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1996 | |
1997 | if (cio_get_iplinfo(&iplinfo)) | |
1998 | return; | |
1999 | ||
18e22a17 | 2000 | ipl_ssid = iplinfo.ssid; |
6fc321fd HC |
2001 | ipl_devno = iplinfo.devno; |
2002 | ipl_flags |= IPL_DEVNO_VALID; | |
2003 | if (!iplinfo.is_qdio) | |
2004 | return; | |
2005 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
6fc321fd HC |
2006 | } |
2007 | ||
15e9b586 HC |
2008 | static LIST_HEAD(rcall); |
2009 | static DEFINE_MUTEX(rcall_mutex); | |
2010 | ||
2011 | void register_reset_call(struct reset_call *reset) | |
2012 | { | |
2013 | mutex_lock(&rcall_mutex); | |
2014 | list_add(&reset->list, &rcall); | |
2015 | mutex_unlock(&rcall_mutex); | |
2016 | } | |
2017 | EXPORT_SYMBOL_GPL(register_reset_call); | |
2018 | ||
2019 | void unregister_reset_call(struct reset_call *reset) | |
2020 | { | |
2021 | mutex_lock(&rcall_mutex); | |
2022 | list_del(&reset->list); | |
2023 | mutex_unlock(&rcall_mutex); | |
2024 | } | |
2025 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
2026 | ||
2027 | static void do_reset_calls(void) | |
2028 | { | |
2029 | struct reset_call *reset; | |
2030 | ||
9dc7356e MH |
2031 | if (diag308_set_works) { |
2032 | diag308_reset(); | |
2033 | return; | |
2034 | } | |
15e9b586 HC |
2035 | list_for_each_entry(reset, &rcall, list) |
2036 | reset->fn(); | |
2037 | } | |
2038 | ||
1a36a39e | 2039 | void s390_reset_system(void) |
15e9b586 | 2040 | { |
c667aeac | 2041 | struct lowcore *lc; |
15e9b586 | 2042 | |
c667aeac | 2043 | lc = (struct lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
2044 | |
2045 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
2046 | lc->panic_stack = S390_lowcore.panic_stack; |
2047 | ||
2048 | /* Disable prefixing */ | |
2049 | set_prefix(0); | |
2050 | ||
2051 | /* Disable lowcore protection */ | |
2052 | __ctl_clear_bit(0,28); | |
2053 | ||
2054 | /* Set new machine check handler */ | |
e258d719 | 2055 | S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT; |
15e9b586 | 2056 | S390_lowcore.mcck_new_psw.addr = |
fecc868a | 2057 | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
2058 | |
2059 | /* Set new program check handler */ | |
e258d719 | 2060 | S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT; |
a45e1414 | 2061 | S390_lowcore.program_new_psw.addr = |
fecc868a | 2062 | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 2063 | |
15e9b586 HC |
2064 | do_reset_calls(); |
2065 | } |