Commit | Line | Data |
---|---|---|
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> | |
11 | #include <linux/module.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/reboot.h> | |
03a4d208 | 15 | #include <linux/ctype.h> |
0788fea4 | 16 | #include <linux/fs.h> |
5a0e3ad6 | 17 | #include <linux/gfp.h> |
60a0c68d | 18 | #include <linux/crash_dump.h> |
3ab121ab | 19 | #include <linux/debug_locks.h> |
1ec2772e | 20 | #include <asm/diag.h> |
46b05d26 | 21 | #include <asm/ipl.h> |
ff6b8ea6 MH |
22 | #include <asm/smp.h> |
23 | #include <asm/setup.h> | |
24 | #include <asm/cpcmd.h> | |
25 | #include <asm/cio.h> | |
03a4d208 | 26 | #include <asm/ebcdic.h> |
15e9b586 | 27 | #include <asm/reset.h> |
ab14de6c | 28 | #include <asm/sclp.h> |
159d1ff8 | 29 | #include <asm/checksum.h> |
3ab121ab | 30 | #include <asm/debug.h> |
4857d4bb | 31 | #include <asm/os_info.h> |
638ad34a | 32 | #include "entry.h" |
ff6b8ea6 MH |
33 | |
34 | #define IPL_PARM_BLOCK_VERSION 0 | |
03a4d208 | 35 | |
411ed322 MH |
36 | #define IPL_UNKNOWN_STR "unknown" |
37 | #define IPL_CCW_STR "ccw" | |
38 | #define IPL_FCP_STR "fcp" | |
39 | #define IPL_FCP_DUMP_STR "fcp_dump" | |
40 | #define IPL_NSS_STR "nss" | |
615b04b3 | 41 | |
99ca4e58 MH |
42 | #define DUMP_CCW_STR "ccw" |
43 | #define DUMP_FCP_STR "fcp" | |
44 | #define DUMP_NONE_STR "none" | |
45 | ||
46 | /* | |
47 | * Four shutdown trigger types are supported: | |
48 | * - panic | |
49 | * - halt | |
50 | * - power off | |
51 | * - reipl | |
7dd6b334 | 52 | * - restart |
99ca4e58 MH |
53 | */ |
54 | #define ON_PANIC_STR "on_panic" | |
55 | #define ON_HALT_STR "on_halt" | |
56 | #define ON_POFF_STR "on_poff" | |
57 | #define ON_REIPL_STR "on_reboot" | |
7dd6b334 | 58 | #define ON_RESTART_STR "on_restart" |
99ca4e58 MH |
59 | |
60 | struct shutdown_action; | |
61 | struct shutdown_trigger { | |
62 | char *name; | |
63 | struct shutdown_action *action; | |
64 | }; | |
65 | ||
66 | /* | |
099b7651 | 67 | * The following shutdown action types are supported: |
99ca4e58 MH |
68 | */ |
69 | #define SHUTDOWN_ACTION_IPL_STR "ipl" | |
70 | #define SHUTDOWN_ACTION_REIPL_STR "reipl" | |
71 | #define SHUTDOWN_ACTION_DUMP_STR "dump" | |
72 | #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" | |
73 | #define SHUTDOWN_ACTION_STOP_STR "stop" | |
099b7651 | 74 | #define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
99ca4e58 MH |
75 | |
76 | struct shutdown_action { | |
77 | char *name; | |
78 | void (*fn) (struct shutdown_trigger *trigger); | |
79 | int (*init) (void); | |
81088819 | 80 | int init_rc; |
99ca4e58 MH |
81 | }; |
82 | ||
ff6b8ea6 MH |
83 | static char *ipl_type_str(enum ipl_type type) |
84 | { | |
85 | switch (type) { | |
ff6b8ea6 MH |
86 | case IPL_TYPE_CCW: |
87 | return IPL_CCW_STR; | |
88 | case IPL_TYPE_FCP: | |
89 | return IPL_FCP_STR; | |
411ed322 MH |
90 | case IPL_TYPE_FCP_DUMP: |
91 | return IPL_FCP_DUMP_STR; | |
fe355b7f HY |
92 | case IPL_TYPE_NSS: |
93 | return IPL_NSS_STR; | |
ff6b8ea6 MH |
94 | case IPL_TYPE_UNKNOWN: |
95 | default: | |
96 | return IPL_UNKNOWN_STR; | |
97 | } | |
98 | } | |
99 | ||
411ed322 MH |
100 | enum dump_type { |
101 | DUMP_TYPE_NONE = 1, | |
102 | DUMP_TYPE_CCW = 2, | |
103 | DUMP_TYPE_FCP = 4, | |
104 | }; | |
105 | ||
411ed322 MH |
106 | static char *dump_type_str(enum dump_type type) |
107 | { | |
108 | switch (type) { | |
109 | case DUMP_TYPE_NONE: | |
110 | return DUMP_NONE_STR; | |
111 | case DUMP_TYPE_CCW: | |
112 | return DUMP_CCW_STR; | |
113 | case DUMP_TYPE_FCP: | |
114 | return DUMP_FCP_STR; | |
115 | default: | |
116 | return NULL; | |
117 | } | |
118 | } | |
119 | ||
120 | /* | |
121 | * Must be in data section since the bss section | |
122 | * is not cleared when these are accessed. | |
123 | */ | |
18e22a17 | 124 | static u8 ipl_ssid __attribute__((__section__(".data"))) = 0; |
411ed322 MH |
125 | static u16 ipl_devno __attribute__((__section__(".data"))) = 0; |
126 | u32 ipl_flags __attribute__((__section__(".data"))) = 0; | |
127 | ||
ff6b8ea6 | 128 | enum ipl_method { |
411ed322 MH |
129 | REIPL_METHOD_CCW_CIO, |
130 | REIPL_METHOD_CCW_DIAG, | |
131 | REIPL_METHOD_CCW_VM, | |
132 | REIPL_METHOD_FCP_RO_DIAG, | |
133 | REIPL_METHOD_FCP_RW_DIAG, | |
134 | REIPL_METHOD_FCP_RO_VM, | |
135 | REIPL_METHOD_FCP_DUMP, | |
136 | REIPL_METHOD_NSS, | |
a0443fbb | 137 | REIPL_METHOD_NSS_DIAG, |
411ed322 MH |
138 | REIPL_METHOD_DEFAULT, |
139 | }; | |
140 | ||
141 | enum dump_method { | |
142 | DUMP_METHOD_NONE, | |
143 | DUMP_METHOD_CCW_CIO, | |
144 | DUMP_METHOD_CCW_DIAG, | |
145 | DUMP_METHOD_CCW_VM, | |
146 | DUMP_METHOD_FCP_DIAG, | |
ff6b8ea6 MH |
147 | }; |
148 | ||
ff6b8ea6 MH |
149 | static int diag308_set_works = 0; |
150 | ||
a0443fbb HB |
151 | static struct ipl_parameter_block ipl_block; |
152 | ||
ff6b8ea6 | 153 | static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
fe355b7f | 154 | |
ff6b8ea6 | 155 | static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
411ed322 | 156 | static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; |
ff6b8ea6 MH |
157 | static struct ipl_parameter_block *reipl_block_fcp; |
158 | static struct ipl_parameter_block *reipl_block_ccw; | |
a0443fbb | 159 | static struct ipl_parameter_block *reipl_block_nss; |
099b7651 | 160 | static struct ipl_parameter_block *reipl_block_actual; |
fe355b7f | 161 | |
411ed322 MH |
162 | static int dump_capabilities = DUMP_TYPE_NONE; |
163 | static enum dump_type dump_type = DUMP_TYPE_NONE; | |
164 | static enum dump_method dump_method = DUMP_METHOD_NONE; | |
ff6b8ea6 MH |
165 | static struct ipl_parameter_block *dump_block_fcp; |
166 | static struct ipl_parameter_block *dump_block_ccw; | |
167 | ||
05dd2530 HC |
168 | static struct sclp_ipl_info sclp_ipl_info; |
169 | ||
1ec2772e | 170 | static inline int __diag308(unsigned long subcode, void *addr) |
ff6b8ea6 | 171 | { |
94c12cc7 | 172 | register unsigned long _addr asm("0") = (unsigned long) addr; |
ff6b8ea6 MH |
173 | register unsigned long _rc asm("1") = 0; |
174 | ||
94c12cc7 MS |
175 | asm volatile( |
176 | " diag %0,%2,0x308\n" | |
177 | "0:\n" | |
178 | EX_TABLE(0b,0b) | |
ff6b8ea6 | 179 | : "+d" (_addr), "+d" (_rc) |
94c12cc7 | 180 | : "d" (subcode) : "cc", "memory"); |
ff6b8ea6 MH |
181 | return _rc; |
182 | } | |
1ec2772e MS |
183 | |
184 | int diag308(unsigned long subcode, void *addr) | |
185 | { | |
186 | diag_stat_inc(DIAG_STAT_X308); | |
187 | return __diag308(subcode, addr); | |
188 | } | |
411ed322 | 189 | EXPORT_SYMBOL_GPL(diag308); |
ff6b8ea6 MH |
190 | |
191 | /* SYSFS */ | |
192 | ||
3be7ae63 | 193 | #define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ |
9b949165 GKH |
194 | static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
195 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
196 | char *page) \ |
197 | { \ | |
3be7ae63 SO |
198 | return snprintf(page, PAGE_SIZE, _format, ##args); \ |
199 | } | |
200 | ||
18e22a17 SO |
201 | #define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ |
202 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ | |
203 | struct kobj_attribute *attr, \ | |
204 | const char *buf, size_t len) \ | |
205 | { \ | |
206 | unsigned long long ssid, devno; \ | |
207 | \ | |
208 | if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ | |
209 | return -EINVAL; \ | |
210 | \ | |
211 | if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ | |
212 | return -EINVAL; \ | |
213 | \ | |
214 | _ipl_blk.ssid = ssid; \ | |
215 | _ipl_blk.devno = devno; \ | |
216 | return len; \ | |
217 | } | |
218 | ||
219 | #define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ | |
220 | IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ | |
221 | _ipl_blk.ssid, _ipl_blk.devno); \ | |
222 | IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ | |
223 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ | |
224 | __ATTR(_name, (S_IRUGO | S_IWUSR), \ | |
225 | sys_##_prefix##_##_name##_show, \ | |
226 | sys_##_prefix##_##_name##_store) \ | |
227 | ||
3be7ae63 SO |
228 | #define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ |
229 | IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ | |
9b949165 | 230 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
3be7ae63 | 231 | __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL) |
ff6b8ea6 MH |
232 | |
233 | #define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ | |
3be7ae63 | 234 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ |
9b949165 GKH |
235 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
236 | struct kobj_attribute *attr, \ | |
ff6b8ea6 MH |
237 | const char *buf, size_t len) \ |
238 | { \ | |
239 | unsigned long long value; \ | |
240 | if (sscanf(buf, _fmt_in, &value) != 1) \ | |
241 | return -EINVAL; \ | |
242 | _value = value; \ | |
243 | return len; \ | |
244 | } \ | |
9b949165 | 245 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
ff6b8ea6 MH |
246 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
247 | sys_##_prefix##_##_name##_show, \ | |
3be7ae63 | 248 | sys_##_prefix##_##_name##_store) |
ff6b8ea6 | 249 | |
fe355b7f | 250 | #define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
3be7ae63 | 251 | IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ |
9b949165 GKH |
252 | static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
253 | struct kobj_attribute *attr, \ | |
fe355b7f HY |
254 | const char *buf, size_t len) \ |
255 | { \ | |
99ca4e58 | 256 | strncpy(_value, buf, sizeof(_value) - 1); \ |
1d802e24 | 257 | strim(_value); \ |
fe355b7f HY |
258 | return len; \ |
259 | } \ | |
9b949165 | 260 | static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
fe355b7f HY |
261 | __ATTR(_name,(S_IRUGO | S_IWUSR), \ |
262 | sys_##_prefix##_##_name##_show, \ | |
3be7ae63 | 263 | sys_##_prefix##_##_name##_store) |
fe355b7f | 264 | |
ff6b8ea6 MH |
265 | static void make_attrs_ro(struct attribute **attrs) |
266 | { | |
267 | while (*attrs) { | |
268 | (*attrs)->mode = S_IRUGO; | |
269 | attrs++; | |
270 | } | |
271 | } | |
272 | ||
273 | /* | |
274 | * ipl section | |
275 | */ | |
276 | ||
411ed322 | 277 | static __init enum ipl_type get_ipl_type(void) |
ff6b8ea6 MH |
278 | { |
279 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
280 | ||
fe355b7f HY |
281 | if (ipl_flags & IPL_NSS_VALID) |
282 | return IPL_TYPE_NSS; | |
e87bfe51 | 283 | if (!(ipl_flags & IPL_DEVNO_VALID)) |
ff6b8ea6 | 284 | return IPL_TYPE_UNKNOWN; |
e87bfe51 | 285 | if (!(ipl_flags & IPL_PARMBLOCK_VALID)) |
ff6b8ea6 MH |
286 | return IPL_TYPE_CCW; |
287 | if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION) | |
288 | return IPL_TYPE_UNKNOWN; | |
289 | if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP) | |
290 | return IPL_TYPE_UNKNOWN; | |
411ed322 MH |
291 | if (ipl->ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) |
292 | return IPL_TYPE_FCP_DUMP; | |
ff6b8ea6 MH |
293 | return IPL_TYPE_FCP; |
294 | } | |
295 | ||
411ed322 MH |
296 | struct ipl_info ipl_info; |
297 | EXPORT_SYMBOL_GPL(ipl_info); | |
298 | ||
9b949165 GKH |
299 | static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
300 | char *page) | |
ff6b8ea6 | 301 | { |
411ed322 | 302 | return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
ff6b8ea6 MH |
303 | } |
304 | ||
9b949165 | 305 | static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
ff6b8ea6 | 306 | |
a0443fbb | 307 | /* VM IPL PARM routines */ |
c4736d96 MS |
308 | static size_t reipl_get_ascii_vmparm(char *dest, size_t size, |
309 | const struct ipl_parameter_block *ipb) | |
a0443fbb HB |
310 | { |
311 | int i; | |
684d2fd4 | 312 | size_t len; |
a0443fbb HB |
313 | char has_lowercase = 0; |
314 | ||
684d2fd4 | 315 | len = 0; |
a0443fbb HB |
316 | if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) && |
317 | (ipb->ipl_info.ccw.vm_parm_len > 0)) { | |
318 | ||
684d2fd4 | 319 | len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len); |
a0443fbb HB |
320 | memcpy(dest, ipb->ipl_info.ccw.vm_parm, len); |
321 | /* If at least one character is lowercase, we assume mixed | |
322 | * case; otherwise we convert everything to lowercase. | |
323 | */ | |
324 | for (i = 0; i < len; i++) | |
325 | if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */ | |
326 | (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */ | |
327 | (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */ | |
328 | has_lowercase = 1; | |
329 | break; | |
330 | } | |
331 | if (!has_lowercase) | |
332 | EBC_TOLOWER(dest, len); | |
333 | EBCASC(dest, len); | |
334 | } | |
335 | dest[len] = 0; | |
684d2fd4 HB |
336 | |
337 | return len; | |
a0443fbb HB |
338 | } |
339 | ||
684d2fd4 | 340 | size_t append_ipl_vmparm(char *dest, size_t size) |
a0443fbb | 341 | { |
684d2fd4 HB |
342 | size_t rc; |
343 | ||
344 | rc = 0; | |
a0443fbb | 345 | if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW)) |
684d2fd4 | 346 | rc = reipl_get_ascii_vmparm(dest, size, &ipl_block); |
a0443fbb HB |
347 | else |
348 | dest[0] = 0; | |
684d2fd4 | 349 | return rc; |
a0443fbb HB |
350 | } |
351 | ||
352 | static ssize_t ipl_vm_parm_show(struct kobject *kobj, | |
353 | struct kobj_attribute *attr, char *page) | |
354 | { | |
355 | char parm[DIAG308_VMPARM_SIZE + 1] = {}; | |
356 | ||
684d2fd4 | 357 | append_ipl_vmparm(parm, sizeof(parm)); |
a0443fbb HB |
358 | return sprintf(page, "%s\n", parm); |
359 | } | |
360 | ||
684d2fd4 HB |
361 | static size_t scpdata_length(const char* buf, size_t count) |
362 | { | |
363 | while (count) { | |
364 | if (buf[count - 1] != '\0' && buf[count - 1] != ' ') | |
365 | break; | |
366 | count--; | |
367 | } | |
368 | return count; | |
369 | } | |
370 | ||
c4736d96 MS |
371 | static size_t reipl_append_ascii_scpdata(char *dest, size_t size, |
372 | const struct ipl_parameter_block *ipb) | |
684d2fd4 HB |
373 | { |
374 | size_t count; | |
375 | size_t i; | |
18d00acf | 376 | int has_lowercase; |
684d2fd4 HB |
377 | |
378 | count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data, | |
379 | ipb->ipl_info.fcp.scp_data_len)); | |
380 | if (!count) | |
381 | goto out; | |
382 | ||
18d00acf HB |
383 | has_lowercase = 0; |
384 | for (i = 0; i < count; i++) { | |
684d2fd4 HB |
385 | if (!isascii(ipb->ipl_info.fcp.scp_data[i])) { |
386 | count = 0; | |
387 | goto out; | |
388 | } | |
18d00acf HB |
389 | if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i])) |
390 | has_lowercase = 1; | |
391 | } | |
684d2fd4 | 392 | |
18d00acf HB |
393 | if (has_lowercase) |
394 | memcpy(dest, ipb->ipl_info.fcp.scp_data, count); | |
395 | else | |
396 | for (i = 0; i < count; i++) | |
397 | dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]); | |
684d2fd4 HB |
398 | out: |
399 | dest[count] = '\0'; | |
400 | return count; | |
401 | } | |
402 | ||
403 | size_t append_ipl_scpdata(char *dest, size_t len) | |
404 | { | |
405 | size_t rc; | |
406 | ||
407 | rc = 0; | |
408 | if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP) | |
409 | rc = reipl_append_ascii_scpdata(dest, len, &ipl_block); | |
410 | else | |
411 | dest[0] = 0; | |
412 | return rc; | |
413 | } | |
414 | ||
415 | ||
a0443fbb HB |
416 | static struct kobj_attribute sys_ipl_vm_parm_attr = |
417 | __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); | |
418 | ||
9b949165 GKH |
419 | static ssize_t sys_ipl_device_show(struct kobject *kobj, |
420 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
421 | { |
422 | struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START; | |
423 | ||
411ed322 | 424 | switch (ipl_info.type) { |
ff6b8ea6 | 425 | case IPL_TYPE_CCW: |
18e22a17 | 426 | return sprintf(page, "0.%x.%04x\n", ipl_ssid, ipl_devno); |
ff6b8ea6 | 427 | case IPL_TYPE_FCP: |
411ed322 | 428 | case IPL_TYPE_FCP_DUMP: |
ff6b8ea6 MH |
429 | return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno); |
430 | default: | |
431 | return 0; | |
432 | } | |
433 | } | |
434 | ||
9b949165 | 435 | static struct kobj_attribute sys_ipl_device_attr = |
ff6b8ea6 MH |
436 | __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
437 | ||
2c3c8bea CW |
438 | static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
439 | struct bin_attribute *attr, char *buf, | |
440 | loff_t off, size_t count) | |
ff6b8ea6 | 441 | { |
0788fea4 AM |
442 | return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START, |
443 | IPL_PARMBLOCK_SIZE); | |
ff6b8ea6 | 444 | } |
22d557ab SO |
445 | static struct bin_attribute ipl_parameter_attr = |
446 | __BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL, | |
447 | PAGE_SIZE); | |
ff6b8ea6 | 448 | |
2c3c8bea CW |
449 | static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
450 | struct bin_attribute *attr, char *buf, | |
451 | loff_t off, size_t count) | |
ff6b8ea6 MH |
452 | { |
453 | unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; | |
454 | void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; | |
455 | ||
0788fea4 | 456 | return memory_read_from_buffer(buf, count, &off, scp_data, size); |
ff6b8ea6 | 457 | } |
22d557ab SO |
458 | static struct bin_attribute ipl_scp_data_attr = |
459 | __BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE); | |
ff6b8ea6 | 460 | |
22d557ab SO |
461 | static struct bin_attribute *ipl_fcp_bin_attrs[] = { |
462 | &ipl_parameter_attr, | |
463 | &ipl_scp_data_attr, | |
464 | NULL, | |
ff6b8ea6 MH |
465 | }; |
466 | ||
467 | /* FCP ipl device attributes */ | |
468 | ||
469 | DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long) | |
470 | IPL_PARMBLOCK_START->ipl_info.fcp.wwpn); | |
471 | DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long) | |
472 | IPL_PARMBLOCK_START->ipl_info.fcp.lun); | |
473 | DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long) | |
474 | IPL_PARMBLOCK_START->ipl_info.fcp.bootprog); | |
475 | DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long) | |
476 | IPL_PARMBLOCK_START->ipl_info.fcp.br_lba); | |
477 | ||
9b949165 GKH |
478 | static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
479 | struct kobj_attribute *attr, char *page) | |
03a4d208 MH |
480 | { |
481 | char loadparm[LOADPARM_LEN + 1] = {}; | |
482 | ||
05dd2530 | 483 | if (!sclp_ipl_info.is_valid) |
03a4d208 | 484 | return sprintf(page, "#unknown#\n"); |
05dd2530 | 485 | memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
03a4d208 | 486 | EBCASC(loadparm, LOADPARM_LEN); |
1d802e24 | 487 | strim(loadparm); |
03a4d208 MH |
488 | return sprintf(page, "%s\n", loadparm); |
489 | } | |
490 | ||
9b949165 | 491 | static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
03a4d208 MH |
492 | __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
493 | ||
69928601 MH |
494 | static struct attribute *ipl_fcp_attrs[] = { |
495 | &sys_ipl_type_attr.attr, | |
496 | &sys_ipl_device_attr.attr, | |
497 | &sys_ipl_fcp_wwpn_attr.attr, | |
498 | &sys_ipl_fcp_lun_attr.attr, | |
499 | &sys_ipl_fcp_bootprog_attr.attr, | |
500 | &sys_ipl_fcp_br_lba_attr.attr, | |
501 | &sys_ipl_ccw_loadparm_attr.attr, | |
502 | NULL, | |
503 | }; | |
504 | ||
505 | static struct attribute_group ipl_fcp_attr_group = { | |
506 | .attrs = ipl_fcp_attrs, | |
22d557ab | 507 | .bin_attrs = ipl_fcp_bin_attrs, |
69928601 MH |
508 | }; |
509 | ||
510 | /* CCW ipl device attributes */ | |
511 | ||
a0443fbb HB |
512 | static struct attribute *ipl_ccw_attrs_vm[] = { |
513 | &sys_ipl_type_attr.attr, | |
514 | &sys_ipl_device_attr.attr, | |
515 | &sys_ipl_ccw_loadparm_attr.attr, | |
516 | &sys_ipl_vm_parm_attr.attr, | |
517 | NULL, | |
518 | }; | |
519 | ||
520 | static struct attribute *ipl_ccw_attrs_lpar[] = { | |
ff6b8ea6 MH |
521 | &sys_ipl_type_attr.attr, |
522 | &sys_ipl_device_attr.attr, | |
03a4d208 | 523 | &sys_ipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
524 | NULL, |
525 | }; | |
526 | ||
a0443fbb HB |
527 | static struct attribute_group ipl_ccw_attr_group_vm = { |
528 | .attrs = ipl_ccw_attrs_vm, | |
529 | }; | |
530 | ||
531 | static struct attribute_group ipl_ccw_attr_group_lpar = { | |
532 | .attrs = ipl_ccw_attrs_lpar | |
ff6b8ea6 MH |
533 | }; |
534 | ||
fe355b7f HY |
535 | /* NSS ipl device attributes */ |
536 | ||
537 | DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name); | |
538 | ||
539 | static struct attribute *ipl_nss_attrs[] = { | |
540 | &sys_ipl_type_attr.attr, | |
541 | &sys_ipl_nss_name_attr.attr, | |
a0443fbb HB |
542 | &sys_ipl_ccw_loadparm_attr.attr, |
543 | &sys_ipl_vm_parm_attr.attr, | |
fe355b7f HY |
544 | NULL, |
545 | }; | |
546 | ||
547 | static struct attribute_group ipl_nss_attr_group = { | |
548 | .attrs = ipl_nss_attrs, | |
549 | }; | |
550 | ||
ff6b8ea6 MH |
551 | /* UNKNOWN ipl device attributes */ |
552 | ||
553 | static struct attribute *ipl_unknown_attrs[] = { | |
554 | &sys_ipl_type_attr.attr, | |
555 | NULL, | |
556 | }; | |
557 | ||
558 | static struct attribute_group ipl_unknown_attr_group = { | |
559 | .attrs = ipl_unknown_attrs, | |
560 | }; | |
561 | ||
d91885be | 562 | static struct kset *ipl_kset; |
ff6b8ea6 | 563 | |
2c2df118 | 564 | static void __ipl_run(void *unused) |
99ca4e58 MH |
565 | { |
566 | diag308(DIAG308_IPL, NULL); | |
567 | if (MACHINE_IS_VM) | |
568 | __cpcmd("IPL", NULL, 0, NULL); | |
569 | else if (ipl_info.type == IPL_TYPE_CCW) | |
570 | reipl_ccw_dev(&ipl_info.data.ccw.dev_id); | |
571 | } | |
572 | ||
2c2df118 HC |
573 | static void ipl_run(struct shutdown_trigger *trigger) |
574 | { | |
8b646bd7 | 575 | smp_call_ipl_cpu(__ipl_run, NULL); |
2c2df118 HC |
576 | } |
577 | ||
2bc89b5e | 578 | static int __init ipl_init(void) |
99ca4e58 MH |
579 | { |
580 | int rc; | |
581 | ||
582 | ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj); | |
583 | if (!ipl_kset) { | |
584 | rc = -ENOMEM; | |
585 | goto out; | |
586 | } | |
587 | switch (ipl_info.type) { | |
588 | case IPL_TYPE_CCW: | |
a0443fbb HB |
589 | if (MACHINE_IS_VM) |
590 | rc = sysfs_create_group(&ipl_kset->kobj, | |
591 | &ipl_ccw_attr_group_vm); | |
592 | else | |
593 | rc = sysfs_create_group(&ipl_kset->kobj, | |
594 | &ipl_ccw_attr_group_lpar); | |
99ca4e58 MH |
595 | break; |
596 | case IPL_TYPE_FCP: | |
597 | case IPL_TYPE_FCP_DUMP: | |
22d557ab | 598 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group); |
99ca4e58 MH |
599 | break; |
600 | case IPL_TYPE_NSS: | |
601 | rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nss_attr_group); | |
602 | break; | |
603 | default: | |
604 | rc = sysfs_create_group(&ipl_kset->kobj, | |
605 | &ipl_unknown_attr_group); | |
606 | break; | |
607 | } | |
608 | out: | |
609 | if (rc) | |
610 | panic("ipl_init failed: rc = %i\n", rc); | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
2bc89b5e HC |
615 | static struct shutdown_action __refdata ipl_action = { |
616 | .name = SHUTDOWN_ACTION_IPL_STR, | |
617 | .fn = ipl_run, | |
618 | .init = ipl_init, | |
619 | }; | |
99ca4e58 | 620 | |
ff6b8ea6 | 621 | /* |
99ca4e58 | 622 | * reipl shutdown action: Reboot Linux on shutdown. |
ff6b8ea6 MH |
623 | */ |
624 | ||
a0443fbb HB |
625 | /* VM IPL PARM attributes */ |
626 | static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb, | |
627 | char *page) | |
628 | { | |
629 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
630 | ||
684d2fd4 | 631 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
632 | return sprintf(page, "%s\n", vmparm); |
633 | } | |
634 | ||
635 | static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb, | |
636 | size_t vmparm_max, | |
637 | const char *buf, size_t len) | |
638 | { | |
639 | int i, ip_len; | |
640 | ||
641 | /* ignore trailing newline */ | |
642 | ip_len = len; | |
643 | if ((len > 0) && (buf[len - 1] == '\n')) | |
644 | ip_len--; | |
645 | ||
646 | if (ip_len > vmparm_max) | |
647 | return -EINVAL; | |
648 | ||
649 | /* parm is used to store kernel options, check for common chars */ | |
650 | for (i = 0; i < ip_len; i++) | |
651 | if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i]))) | |
652 | return -EINVAL; | |
653 | ||
654 | memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE); | |
655 | ipb->ipl_info.ccw.vm_parm_len = ip_len; | |
656 | if (ip_len > 0) { | |
657 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
658 | memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len); | |
659 | ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len); | |
660 | } else { | |
661 | ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID; | |
662 | } | |
663 | ||
664 | return len; | |
665 | } | |
666 | ||
667 | /* NSS wrapper */ | |
668 | static ssize_t reipl_nss_vmparm_show(struct kobject *kobj, | |
669 | struct kobj_attribute *attr, char *page) | |
670 | { | |
671 | return reipl_generic_vmparm_show(reipl_block_nss, page); | |
672 | } | |
673 | ||
674 | static ssize_t reipl_nss_vmparm_store(struct kobject *kobj, | |
675 | struct kobj_attribute *attr, | |
676 | const char *buf, size_t len) | |
677 | { | |
678 | return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len); | |
679 | } | |
680 | ||
681 | /* CCW wrapper */ | |
682 | static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj, | |
683 | struct kobj_attribute *attr, char *page) | |
684 | { | |
685 | return reipl_generic_vmparm_show(reipl_block_ccw, page); | |
686 | } | |
687 | ||
688 | static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj, | |
689 | struct kobj_attribute *attr, | |
690 | const char *buf, size_t len) | |
691 | { | |
692 | return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len); | |
693 | } | |
694 | ||
695 | static struct kobj_attribute sys_reipl_nss_vmparm_attr = | |
696 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show, | |
697 | reipl_nss_vmparm_store); | |
698 | static struct kobj_attribute sys_reipl_ccw_vmparm_attr = | |
699 | __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show, | |
700 | reipl_ccw_vmparm_store); | |
701 | ||
ff6b8ea6 MH |
702 | /* FCP reipl device attributes */ |
703 | ||
2c3c8bea | 704 | static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
705 | struct bin_attribute *attr, |
706 | char *buf, loff_t off, size_t count) | |
707 | { | |
708 | size_t size = reipl_block_fcp->ipl_info.fcp.scp_data_len; | |
709 | void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data; | |
710 | ||
711 | return memory_read_from_buffer(buf, count, &off, scp_data, size); | |
712 | } | |
713 | ||
2c3c8bea | 714 | static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj, |
684d2fd4 HB |
715 | struct bin_attribute *attr, |
716 | char *buf, loff_t off, size_t count) | |
717 | { | |
e0bedada | 718 | size_t scpdata_len = count; |
684d2fd4 | 719 | size_t padding; |
684d2fd4 | 720 | |
684d2fd4 | 721 | |
e0bedada SO |
722 | if (off) |
723 | return -EINVAL; | |
684d2fd4 | 724 | |
e0bedada | 725 | memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf, count); |
684d2fd4 HB |
726 | if (scpdata_len % 8) { |
727 | padding = 8 - (scpdata_len % 8); | |
728 | memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len, | |
729 | 0, padding); | |
730 | scpdata_len += padding; | |
731 | } | |
732 | ||
733 | reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len; | |
734 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len; | |
735 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len; | |
736 | ||
737 | return count; | |
738 | } | |
22d557ab SO |
739 | static struct bin_attribute sys_reipl_fcp_scp_data_attr = |
740 | __BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read, | |
e0bedada | 741 | reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE); |
684d2fd4 | 742 | |
22d557ab SO |
743 | static struct bin_attribute *reipl_fcp_bin_attrs[] = { |
744 | &sys_reipl_fcp_scp_data_attr, | |
745 | NULL, | |
684d2fd4 HB |
746 | }; |
747 | ||
eda4ddf7 | 748 | DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n", |
ff6b8ea6 | 749 | reipl_block_fcp->ipl_info.fcp.wwpn); |
eda4ddf7 | 750 | DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n", |
ff6b8ea6 MH |
751 | reipl_block_fcp->ipl_info.fcp.lun); |
752 | DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n", | |
753 | reipl_block_fcp->ipl_info.fcp.bootprog); | |
754 | DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n", | |
755 | reipl_block_fcp->ipl_info.fcp.br_lba); | |
756 | DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
757 | reipl_block_fcp->ipl_info.fcp.devno); | |
758 | ||
a0443fbb HB |
759 | static void reipl_get_ascii_loadparm(char *loadparm, |
760 | struct ipl_parameter_block *ibp) | |
03a4d208 | 761 | { |
69928601 | 762 | memcpy(loadparm, ibp->hdr.loadparm, LOADPARM_LEN); |
03a4d208 MH |
763 | EBCASC(loadparm, LOADPARM_LEN); |
764 | loadparm[LOADPARM_LEN] = 0; | |
1d802e24 | 765 | strim(loadparm); |
03a4d208 MH |
766 | } |
767 | ||
a0443fbb HB |
768 | static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb, |
769 | char *page) | |
03a4d208 MH |
770 | { |
771 | char buf[LOADPARM_LEN + 1]; | |
772 | ||
a0443fbb | 773 | reipl_get_ascii_loadparm(buf, ipb); |
03a4d208 MH |
774 | return sprintf(page, "%s\n", buf); |
775 | } | |
776 | ||
a0443fbb HB |
777 | static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb, |
778 | const char *buf, size_t len) | |
03a4d208 MH |
779 | { |
780 | int i, lp_len; | |
781 | ||
782 | /* ignore trailing newline */ | |
783 | lp_len = len; | |
784 | if ((len > 0) && (buf[len - 1] == '\n')) | |
785 | lp_len--; | |
786 | /* loadparm can have max 8 characters and must not start with a blank */ | |
787 | if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' '))) | |
788 | return -EINVAL; | |
789 | /* loadparm can only contain "a-z,A-Z,0-9,SP,." */ | |
790 | for (i = 0; i < lp_len; i++) { | |
791 | if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') || | |
792 | (buf[i] == '.')) | |
793 | continue; | |
794 | return -EINVAL; | |
795 | } | |
796 | /* initialize loadparm with blanks */ | |
69928601 | 797 | memset(ipb->hdr.loadparm, ' ', LOADPARM_LEN); |
03a4d208 | 798 | /* copy and convert to ebcdic */ |
69928601 MH |
799 | memcpy(ipb->hdr.loadparm, buf, lp_len); |
800 | ASCEBC(ipb->hdr.loadparm, LOADPARM_LEN); | |
03a4d208 MH |
801 | return len; |
802 | } | |
803 | ||
69928601 MH |
804 | /* FCP wrapper */ |
805 | static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj, | |
806 | struct kobj_attribute *attr, char *page) | |
807 | { | |
808 | return reipl_generic_loadparm_show(reipl_block_fcp, page); | |
809 | } | |
810 | ||
811 | static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj, | |
812 | struct kobj_attribute *attr, | |
813 | const char *buf, size_t len) | |
814 | { | |
815 | return reipl_generic_loadparm_store(reipl_block_fcp, buf, len); | |
816 | } | |
817 | ||
818 | static struct kobj_attribute sys_reipl_fcp_loadparm_attr = | |
819 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show, | |
820 | reipl_fcp_loadparm_store); | |
821 | ||
822 | static struct attribute *reipl_fcp_attrs[] = { | |
823 | &sys_reipl_fcp_device_attr.attr, | |
824 | &sys_reipl_fcp_wwpn_attr.attr, | |
825 | &sys_reipl_fcp_lun_attr.attr, | |
826 | &sys_reipl_fcp_bootprog_attr.attr, | |
827 | &sys_reipl_fcp_br_lba_attr.attr, | |
828 | &sys_reipl_fcp_loadparm_attr.attr, | |
829 | NULL, | |
830 | }; | |
831 | ||
832 | static struct attribute_group reipl_fcp_attr_group = { | |
833 | .attrs = reipl_fcp_attrs, | |
22d557ab | 834 | .bin_attrs = reipl_fcp_bin_attrs, |
69928601 MH |
835 | }; |
836 | ||
837 | /* CCW reipl device attributes */ | |
18e22a17 | 838 | DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ipl_info.ccw); |
69928601 | 839 | |
a0443fbb HB |
840 | /* NSS wrapper */ |
841 | static ssize_t reipl_nss_loadparm_show(struct kobject *kobj, | |
842 | struct kobj_attribute *attr, char *page) | |
843 | { | |
844 | return reipl_generic_loadparm_show(reipl_block_nss, page); | |
845 | } | |
846 | ||
847 | static ssize_t reipl_nss_loadparm_store(struct kobject *kobj, | |
848 | struct kobj_attribute *attr, | |
849 | const char *buf, size_t len) | |
850 | { | |
851 | return reipl_generic_loadparm_store(reipl_block_nss, buf, len); | |
852 | } | |
853 | ||
854 | /* CCW wrapper */ | |
855 | static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj, | |
856 | struct kobj_attribute *attr, char *page) | |
857 | { | |
858 | return reipl_generic_loadparm_show(reipl_block_ccw, page); | |
859 | } | |
860 | ||
861 | static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj, | |
862 | struct kobj_attribute *attr, | |
863 | const char *buf, size_t len) | |
864 | { | |
865 | return reipl_generic_loadparm_store(reipl_block_ccw, buf, len); | |
866 | } | |
867 | ||
9b949165 | 868 | static struct kobj_attribute sys_reipl_ccw_loadparm_attr = |
a0443fbb HB |
869 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, |
870 | reipl_ccw_loadparm_store); | |
871 | ||
872 | static struct attribute *reipl_ccw_attrs_vm[] = { | |
873 | &sys_reipl_ccw_device_attr.attr, | |
874 | &sys_reipl_ccw_loadparm_attr.attr, | |
875 | &sys_reipl_ccw_vmparm_attr.attr, | |
876 | NULL, | |
877 | }; | |
03a4d208 | 878 | |
a0443fbb | 879 | static struct attribute *reipl_ccw_attrs_lpar[] = { |
ff6b8ea6 | 880 | &sys_reipl_ccw_device_attr.attr, |
03a4d208 | 881 | &sys_reipl_ccw_loadparm_attr.attr, |
ff6b8ea6 MH |
882 | NULL, |
883 | }; | |
884 | ||
a0443fbb | 885 | static struct attribute_group reipl_ccw_attr_group_vm = { |
ff6b8ea6 | 886 | .name = IPL_CCW_STR, |
a0443fbb HB |
887 | .attrs = reipl_ccw_attrs_vm, |
888 | }; | |
889 | ||
890 | static struct attribute_group reipl_ccw_attr_group_lpar = { | |
891 | .name = IPL_CCW_STR, | |
892 | .attrs = reipl_ccw_attrs_lpar, | |
ff6b8ea6 MH |
893 | }; |
894 | ||
fe355b7f HY |
895 | |
896 | /* NSS reipl device attributes */ | |
a0443fbb HB |
897 | static void reipl_get_ascii_nss_name(char *dst, |
898 | struct ipl_parameter_block *ipb) | |
899 | { | |
900 | memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
901 | EBCASC(dst, NSS_NAME_SIZE); | |
902 | dst[NSS_NAME_SIZE] = 0; | |
903 | } | |
904 | ||
905 | static ssize_t reipl_nss_name_show(struct kobject *kobj, | |
906 | struct kobj_attribute *attr, char *page) | |
907 | { | |
908 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
909 | ||
910 | reipl_get_ascii_nss_name(nss_name, reipl_block_nss); | |
911 | return sprintf(page, "%s\n", nss_name); | |
912 | } | |
913 | ||
914 | static ssize_t reipl_nss_name_store(struct kobject *kobj, | |
915 | struct kobj_attribute *attr, | |
916 | const char *buf, size_t len) | |
917 | { | |
918 | int nss_len; | |
919 | ||
920 | /* ignore trailing newline */ | |
921 | nss_len = len; | |
922 | if ((len > 0) && (buf[len - 1] == '\n')) | |
923 | nss_len--; | |
fe355b7f | 924 | |
a0443fbb HB |
925 | if (nss_len > NSS_NAME_SIZE) |
926 | return -EINVAL; | |
927 | ||
928 | memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE); | |
929 | if (nss_len > 0) { | |
930 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
931 | DIAG308_VM_FLAGS_NSS_VALID; | |
932 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len); | |
933 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
934 | EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len); | |
935 | } else { | |
936 | reipl_block_nss->ipl_info.ccw.vm_flags &= | |
937 | ~DIAG308_VM_FLAGS_NSS_VALID; | |
938 | } | |
939 | ||
940 | return len; | |
941 | } | |
942 | ||
943 | static struct kobj_attribute sys_reipl_nss_name_attr = | |
944 | __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, | |
945 | reipl_nss_name_store); | |
946 | ||
947 | static struct kobj_attribute sys_reipl_nss_loadparm_attr = | |
948 | __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, | |
949 | reipl_nss_loadparm_store); | |
fe355b7f HY |
950 | |
951 | static struct attribute *reipl_nss_attrs[] = { | |
952 | &sys_reipl_nss_name_attr.attr, | |
a0443fbb HB |
953 | &sys_reipl_nss_loadparm_attr.attr, |
954 | &sys_reipl_nss_vmparm_attr.attr, | |
fe355b7f HY |
955 | NULL, |
956 | }; | |
957 | ||
958 | static struct attribute_group reipl_nss_attr_group = { | |
959 | .name = IPL_NSS_STR, | |
960 | .attrs = reipl_nss_attrs, | |
961 | }; | |
962 | ||
4857d4bb MH |
963 | static void set_reipl_block_actual(struct ipl_parameter_block *reipl_block) |
964 | { | |
965 | reipl_block_actual = reipl_block; | |
966 | os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, | |
967 | reipl_block->hdr.len); | |
968 | } | |
969 | ||
ff6b8ea6 MH |
970 | /* reipl type */ |
971 | ||
972 | static int reipl_set_type(enum ipl_type type) | |
973 | { | |
974 | if (!(reipl_capabilities & type)) | |
975 | return -EINVAL; | |
976 | ||
977 | switch(type) { | |
978 | case IPL_TYPE_CCW: | |
48657d22 MH |
979 | if (diag308_set_works) |
980 | reipl_method = REIPL_METHOD_CCW_DIAG; | |
981 | else if (MACHINE_IS_VM) | |
411ed322 | 982 | reipl_method = REIPL_METHOD_CCW_VM; |
ff6b8ea6 | 983 | else |
411ed322 | 984 | reipl_method = REIPL_METHOD_CCW_CIO; |
4857d4bb | 985 | set_reipl_block_actual(reipl_block_ccw); |
ff6b8ea6 MH |
986 | break; |
987 | case IPL_TYPE_FCP: | |
988 | if (diag308_set_works) | |
411ed322 | 989 | reipl_method = REIPL_METHOD_FCP_RW_DIAG; |
ff6b8ea6 | 990 | else if (MACHINE_IS_VM) |
411ed322 | 991 | reipl_method = REIPL_METHOD_FCP_RO_VM; |
ff6b8ea6 | 992 | else |
411ed322 | 993 | reipl_method = REIPL_METHOD_FCP_RO_DIAG; |
4857d4bb | 994 | set_reipl_block_actual(reipl_block_fcp); |
411ed322 MH |
995 | break; |
996 | case IPL_TYPE_FCP_DUMP: | |
997 | reipl_method = REIPL_METHOD_FCP_DUMP; | |
ff6b8ea6 | 998 | break; |
fe355b7f | 999 | case IPL_TYPE_NSS: |
a0443fbb HB |
1000 | if (diag308_set_works) |
1001 | reipl_method = REIPL_METHOD_NSS_DIAG; | |
1002 | else | |
1003 | reipl_method = REIPL_METHOD_NSS; | |
4857d4bb | 1004 | set_reipl_block_actual(reipl_block_nss); |
411ed322 MH |
1005 | break; |
1006 | case IPL_TYPE_UNKNOWN: | |
1007 | reipl_method = REIPL_METHOD_DEFAULT; | |
fe355b7f | 1008 | break; |
ff6b8ea6 | 1009 | default: |
411ed322 | 1010 | BUG(); |
ff6b8ea6 MH |
1011 | } |
1012 | reipl_type = type; | |
1013 | return 0; | |
1014 | } | |
1015 | ||
9b949165 GKH |
1016 | static ssize_t reipl_type_show(struct kobject *kobj, |
1017 | struct kobj_attribute *attr, char *page) | |
ff6b8ea6 MH |
1018 | { |
1019 | return sprintf(page, "%s\n", ipl_type_str(reipl_type)); | |
1020 | } | |
1021 | ||
9b949165 GKH |
1022 | static ssize_t reipl_type_store(struct kobject *kobj, |
1023 | struct kobj_attribute *attr, | |
1024 | const char *buf, size_t len) | |
ff6b8ea6 MH |
1025 | { |
1026 | int rc = -EINVAL; | |
1027 | ||
1028 | if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) | |
1029 | rc = reipl_set_type(IPL_TYPE_CCW); | |
1030 | else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) | |
1031 | rc = reipl_set_type(IPL_TYPE_FCP); | |
fe355b7f HY |
1032 | else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
1033 | rc = reipl_set_type(IPL_TYPE_NSS); | |
ff6b8ea6 MH |
1034 | return (rc != 0) ? rc : len; |
1035 | } | |
1036 | ||
9b949165 | 1037 | static struct kobj_attribute reipl_type_attr = |
99ca4e58 | 1038 | __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
ff6b8ea6 | 1039 | |
d91885be | 1040 | static struct kset *reipl_kset; |
684d2fd4 | 1041 | static struct kset *reipl_fcp_kset; |
ff6b8ea6 | 1042 | |
a0443fbb HB |
1043 | static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb, |
1044 | const enum ipl_method m) | |
1045 | { | |
1046 | char loadparm[LOADPARM_LEN + 1] = {}; | |
1047 | char vmparm[DIAG308_VMPARM_SIZE + 1] = {}; | |
1048 | char nss_name[NSS_NAME_SIZE + 1] = {}; | |
1049 | size_t pos = 0; | |
1050 | ||
1051 | reipl_get_ascii_loadparm(loadparm, ipb); | |
1052 | reipl_get_ascii_nss_name(nss_name, ipb); | |
684d2fd4 | 1053 | reipl_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb); |
a0443fbb HB |
1054 | |
1055 | switch (m) { | |
1056 | case REIPL_METHOD_CCW_VM: | |
1057 | pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno); | |
1058 | break; | |
1059 | case REIPL_METHOD_NSS: | |
1060 | pos = sprintf(dst, "IPL %s", nss_name); | |
1061 | break; | |
1062 | default: | |
1063 | break; | |
1064 | } | |
1065 | if (strlen(loadparm) > 0) | |
1066 | pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm); | |
1067 | if (strlen(vmparm) > 0) | |
1068 | sprintf(dst + pos, " PARM %s", vmparm); | |
1069 | } | |
1070 | ||
2c2df118 | 1071 | static void __reipl_run(void *unused) |
ff6b8ea6 MH |
1072 | { |
1073 | struct ccw_dev_id devid; | |
a0443fbb | 1074 | static char buf[128]; |
ff6b8ea6 | 1075 | |
ff6b8ea6 | 1076 | switch (reipl_method) { |
411ed322 | 1077 | case REIPL_METHOD_CCW_CIO: |
18e22a17 | 1078 | devid.ssid = reipl_block_ccw->ipl_info.ccw.ssid; |
ff6b8ea6 | 1079 | devid.devno = reipl_block_ccw->ipl_info.ccw.devno; |
ff6b8ea6 MH |
1080 | reipl_ccw_dev(&devid); |
1081 | break; | |
411ed322 | 1082 | case REIPL_METHOD_CCW_VM: |
a0443fbb | 1083 | get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM); |
740b5706 | 1084 | __cpcmd(buf, NULL, 0, NULL); |
ff6b8ea6 | 1085 | break; |
411ed322 | 1086 | case REIPL_METHOD_CCW_DIAG: |
ff6b8ea6 MH |
1087 | diag308(DIAG308_SET, reipl_block_ccw); |
1088 | diag308(DIAG308_IPL, NULL); | |
1089 | break; | |
411ed322 | 1090 | case REIPL_METHOD_FCP_RW_DIAG: |
ff6b8ea6 MH |
1091 | diag308(DIAG308_SET, reipl_block_fcp); |
1092 | diag308(DIAG308_IPL, NULL); | |
1093 | break; | |
411ed322 | 1094 | case REIPL_METHOD_FCP_RO_DIAG: |
ff6b8ea6 MH |
1095 | diag308(DIAG308_IPL, NULL); |
1096 | break; | |
411ed322 | 1097 | case REIPL_METHOD_FCP_RO_VM: |
740b5706 | 1098 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 | 1099 | break; |
a0443fbb HB |
1100 | case REIPL_METHOD_NSS_DIAG: |
1101 | diag308(DIAG308_SET, reipl_block_nss); | |
1102 | diag308(DIAG308_IPL, NULL); | |
1103 | break; | |
411ed322 | 1104 | case REIPL_METHOD_NSS: |
a0443fbb | 1105 | get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS); |
fe355b7f HY |
1106 | __cpcmd(buf, NULL, 0, NULL); |
1107 | break; | |
411ed322 | 1108 | case REIPL_METHOD_DEFAULT: |
ff6b8ea6 | 1109 | if (MACHINE_IS_VM) |
740b5706 | 1110 | __cpcmd("IPL", NULL, 0, NULL); |
ff6b8ea6 MH |
1111 | diag308(DIAG308_IPL, NULL); |
1112 | break; | |
411ed322 | 1113 | case REIPL_METHOD_FCP_DUMP: |
411ed322 | 1114 | break; |
ff6b8ea6 | 1115 | } |
208e5591 | 1116 | disabled_wait((unsigned long) __builtin_return_address(0)); |
ff6b8ea6 MH |
1117 | } |
1118 | ||
2c2df118 HC |
1119 | static void reipl_run(struct shutdown_trigger *trigger) |
1120 | { | |
8b646bd7 | 1121 | smp_call_ipl_cpu(__reipl_run, NULL); |
2c2df118 HC |
1122 | } |
1123 | ||
a0443fbb | 1124 | static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
ff6b8ea6 | 1125 | { |
a0443fbb HB |
1126 | ipb->hdr.len = IPL_PARM_BLK_CCW_LEN; |
1127 | ipb->hdr.version = IPL_PARM_BLOCK_VERSION; | |
1128 | ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; | |
1129 | ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW; | |
1130 | } | |
ff6b8ea6 | 1131 | |
a0443fbb HB |
1132 | static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
1133 | { | |
1134 | /* LOADPARM */ | |
1135 | /* check if read scp info worked and set loadparm */ | |
1136 | if (sclp_ipl_info.is_valid) | |
69928601 | 1137 | memcpy(ipb->hdr.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
a0443fbb HB |
1138 | else |
1139 | /* read scp info failed: set empty loadparm (EBCDIC blanks) */ | |
69928601 | 1140 | memset(ipb->hdr.loadparm, 0x40, LOADPARM_LEN); |
a0443fbb HB |
1141 | ipb->hdr.flags = DIAG308_FLAGS_LP_VALID; |
1142 | ||
1143 | /* VM PARM */ | |
1144 | if (MACHINE_IS_VM && diag308_set_works && | |
1145 | (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) { | |
1146 | ||
1147 | ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID; | |
1148 | ipb->ipl_info.ccw.vm_parm_len = | |
1149 | ipl_block.ipl_info.ccw.vm_parm_len; | |
1150 | memcpy(ipb->ipl_info.ccw.vm_parm, | |
1151 | ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE); | |
1152 | } | |
ff6b8ea6 MH |
1153 | } |
1154 | ||
99ca4e58 | 1155 | static int __init reipl_nss_init(void) |
ff6b8ea6 MH |
1156 | { |
1157 | int rc; | |
1158 | ||
99ca4e58 MH |
1159 | if (!MACHINE_IS_VM) |
1160 | return 0; | |
a0443fbb HB |
1161 | |
1162 | reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); | |
1163 | if (!reipl_block_nss) | |
1164 | return -ENOMEM; | |
1165 | ||
1166 | if (!diag308_set_works) | |
1167 | sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO; | |
1168 | ||
99ca4e58 | 1169 | rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
fe355b7f HY |
1170 | if (rc) |
1171 | return rc; | |
a0443fbb HB |
1172 | |
1173 | reipl_block_ccw_init(reipl_block_nss); | |
1174 | if (ipl_info.type == IPL_TYPE_NSS) { | |
1175 | memset(reipl_block_nss->ipl_info.ccw.nss_name, | |
1176 | ' ', NSS_NAME_SIZE); | |
1177 | memcpy(reipl_block_nss->ipl_info.ccw.nss_name, | |
1178 | kernel_nss_name, strlen(kernel_nss_name)); | |
1179 | ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE); | |
1180 | reipl_block_nss->ipl_info.ccw.vm_flags |= | |
1181 | DIAG308_VM_FLAGS_NSS_VALID; | |
1182 | ||
1183 | reipl_block_ccw_fill_parms(reipl_block_nss); | |
1184 | } | |
1185 | ||
fe355b7f HY |
1186 | reipl_capabilities |= IPL_TYPE_NSS; |
1187 | return 0; | |
1188 | } | |
1189 | ||
ff6b8ea6 MH |
1190 | static int __init reipl_ccw_init(void) |
1191 | { | |
1192 | int rc; | |
1193 | ||
1194 | reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1195 | if (!reipl_block_ccw) | |
1196 | return -ENOMEM; | |
a0443fbb HB |
1197 | |
1198 | if (MACHINE_IS_VM) { | |
1199 | if (!diag308_set_works) | |
1200 | sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO; | |
1201 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1202 | &reipl_ccw_attr_group_vm); | |
1203 | } else { | |
1204 | if(!diag308_set_works) | |
1205 | sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO; | |
1206 | rc = sysfs_create_group(&reipl_kset->kobj, | |
1207 | &reipl_ccw_attr_group_lpar); | |
ff6b8ea6 | 1208 | } |
a0443fbb HB |
1209 | if (rc) |
1210 | return rc; | |
1211 | ||
1212 | reipl_block_ccw_init(reipl_block_ccw); | |
1213 | if (ipl_info.type == IPL_TYPE_CCW) { | |
18e22a17 | 1214 | reipl_block_ccw->ipl_info.ccw.ssid = ipl_ssid; |
ff6b8ea6 | 1215 | reipl_block_ccw->ipl_info.ccw.devno = ipl_devno; |
a0443fbb HB |
1216 | reipl_block_ccw_fill_parms(reipl_block_ccw); |
1217 | } | |
1218 | ||
ff6b8ea6 MH |
1219 | reipl_capabilities |= IPL_TYPE_CCW; |
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | static int __init reipl_fcp_init(void) | |
1224 | { | |
1225 | int rc; | |
1226 | ||
008d2d11 | 1227 | if (!diag308_set_works) { |
684d2fd4 | 1228 | if (ipl_info.type == IPL_TYPE_FCP) { |
008d2d11 | 1229 | make_attrs_ro(reipl_fcp_attrs); |
684d2fd4 HB |
1230 | sys_reipl_fcp_scp_data_attr.attr.mode = S_IRUGO; |
1231 | } else | |
008d2d11 MH |
1232 | return 0; |
1233 | } | |
ff6b8ea6 MH |
1234 | |
1235 | reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1236 | if (!reipl_block_fcp) | |
1237 | return -ENOMEM; | |
684d2fd4 HB |
1238 | |
1239 | /* sysfs: create fcp kset for mixing attr group and bin attrs */ | |
1240 | reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, | |
1241 | &reipl_kset->kobj); | |
798620fb | 1242 | if (!reipl_fcp_kset) { |
684d2fd4 HB |
1243 | free_page((unsigned long) reipl_block_fcp); |
1244 | return -ENOMEM; | |
1245 | } | |
1246 | ||
1247 | rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); | |
ff6b8ea6 | 1248 | if (rc) { |
684d2fd4 HB |
1249 | kset_unregister(reipl_fcp_kset); |
1250 | free_page((unsigned long) reipl_block_fcp); | |
ff6b8ea6 MH |
1251 | return rc; |
1252 | } | |
684d2fd4 | 1253 | |
69928601 | 1254 | if (ipl_info.type == IPL_TYPE_FCP) { |
ff6b8ea6 | 1255 | memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE); |
69928601 MH |
1256 | /* |
1257 | * Fix loadparm: There are systems where the (SCSI) LOADPARM | |
1258 | * is invalid in the SCSI IPL parameter block, so take it | |
1259 | * always from sclp_ipl_info. | |
1260 | */ | |
1261 | memcpy(reipl_block_fcp->hdr.loadparm, sclp_ipl_info.loadparm, | |
1262 | LOADPARM_LEN); | |
1263 | } else { | |
ff6b8ea6 MH |
1264 | reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; |
1265 | reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1266 | reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1267 | reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1268 | reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL; | |
1269 | } | |
1270 | reipl_capabilities |= IPL_TYPE_FCP; | |
1271 | return 0; | |
1272 | } | |
1273 | ||
4857d4bb MH |
1274 | static int __init reipl_type_init(void) |
1275 | { | |
1276 | enum ipl_type reipl_type = ipl_info.type; | |
1277 | struct ipl_parameter_block *reipl_block; | |
1278 | unsigned long size; | |
1279 | ||
1280 | reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); | |
1281 | if (!reipl_block) | |
1282 | goto out; | |
1283 | /* | |
1284 | * If we have an OS info reipl block, this will be used | |
1285 | */ | |
1286 | if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_FCP) { | |
1287 | memcpy(reipl_block_fcp, reipl_block, size); | |
1288 | reipl_type = IPL_TYPE_FCP; | |
1289 | } else if (reipl_block->hdr.pbt == DIAG308_IPL_TYPE_CCW) { | |
1290 | memcpy(reipl_block_ccw, reipl_block, size); | |
1291 | reipl_type = IPL_TYPE_CCW; | |
1292 | } | |
1293 | out: | |
1294 | return reipl_set_type(reipl_type); | |
1295 | } | |
1296 | ||
2bc89b5e | 1297 | static int __init reipl_init(void) |
ff6b8ea6 MH |
1298 | { |
1299 | int rc; | |
1300 | ||
f62ed9e3 | 1301 | reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
d91885be GKH |
1302 | if (!reipl_kset) |
1303 | return -ENOMEM; | |
1304 | rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); | |
ff6b8ea6 | 1305 | if (rc) { |
d91885be | 1306 | kset_unregister(reipl_kset); |
ff6b8ea6 MH |
1307 | return rc; |
1308 | } | |
1309 | rc = reipl_ccw_init(); | |
1310 | if (rc) | |
1311 | return rc; | |
1312 | rc = reipl_fcp_init(); | |
fe355b7f HY |
1313 | if (rc) |
1314 | return rc; | |
1315 | rc = reipl_nss_init(); | |
ff6b8ea6 MH |
1316 | if (rc) |
1317 | return rc; | |
4857d4bb | 1318 | return reipl_type_init(); |
ff6b8ea6 MH |
1319 | } |
1320 | ||
2bc89b5e HC |
1321 | static struct shutdown_action __refdata reipl_action = { |
1322 | .name = SHUTDOWN_ACTION_REIPL_STR, | |
1323 | .fn = reipl_run, | |
1324 | .init = reipl_init, | |
1325 | }; | |
99ca4e58 MH |
1326 | |
1327 | /* | |
1328 | * dump shutdown action: Dump Linux on shutdown. | |
1329 | */ | |
1330 | ||
1331 | /* FCP dump device attributes */ | |
1332 | ||
eda4ddf7 | 1333 | DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", |
99ca4e58 | 1334 | dump_block_fcp->ipl_info.fcp.wwpn); |
eda4ddf7 | 1335 | DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", |
99ca4e58 MH |
1336 | dump_block_fcp->ipl_info.fcp.lun); |
1337 | DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", | |
1338 | dump_block_fcp->ipl_info.fcp.bootprog); | |
1339 | DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", | |
1340 | dump_block_fcp->ipl_info.fcp.br_lba); | |
1341 | DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", | |
1342 | dump_block_fcp->ipl_info.fcp.devno); | |
1343 | ||
1344 | static struct attribute *dump_fcp_attrs[] = { | |
1345 | &sys_dump_fcp_device_attr.attr, | |
1346 | &sys_dump_fcp_wwpn_attr.attr, | |
1347 | &sys_dump_fcp_lun_attr.attr, | |
1348 | &sys_dump_fcp_bootprog_attr.attr, | |
1349 | &sys_dump_fcp_br_lba_attr.attr, | |
1350 | NULL, | |
1351 | }; | |
1352 | ||
1353 | static struct attribute_group dump_fcp_attr_group = { | |
1354 | .name = IPL_FCP_STR, | |
1355 | .attrs = dump_fcp_attrs, | |
1356 | }; | |
1357 | ||
1358 | /* CCW dump device attributes */ | |
18e22a17 | 1359 | DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ipl_info.ccw); |
99ca4e58 MH |
1360 | |
1361 | static struct attribute *dump_ccw_attrs[] = { | |
1362 | &sys_dump_ccw_device_attr.attr, | |
1363 | NULL, | |
1364 | }; | |
1365 | ||
1366 | static struct attribute_group dump_ccw_attr_group = { | |
1367 | .name = IPL_CCW_STR, | |
1368 | .attrs = dump_ccw_attrs, | |
1369 | }; | |
1370 | ||
1371 | /* dump type */ | |
1372 | ||
1373 | static int dump_set_type(enum dump_type type) | |
1374 | { | |
1375 | if (!(dump_capabilities & type)) | |
1376 | return -EINVAL; | |
1377 | switch (type) { | |
1378 | case DUMP_TYPE_CCW: | |
48657d22 MH |
1379 | if (diag308_set_works) |
1380 | dump_method = DUMP_METHOD_CCW_DIAG; | |
1381 | else if (MACHINE_IS_VM) | |
99ca4e58 MH |
1382 | dump_method = DUMP_METHOD_CCW_VM; |
1383 | else | |
1384 | dump_method = DUMP_METHOD_CCW_CIO; | |
1385 | break; | |
1386 | case DUMP_TYPE_FCP: | |
1387 | dump_method = DUMP_METHOD_FCP_DIAG; | |
1388 | break; | |
1389 | default: | |
1390 | dump_method = DUMP_METHOD_NONE; | |
1391 | } | |
1392 | dump_type = type; | |
1393 | return 0; | |
1394 | } | |
1395 | ||
1396 | static ssize_t dump_type_show(struct kobject *kobj, | |
1397 | struct kobj_attribute *attr, char *page) | |
1398 | { | |
1399 | return sprintf(page, "%s\n", dump_type_str(dump_type)); | |
1400 | } | |
1401 | ||
1402 | static ssize_t dump_type_store(struct kobject *kobj, | |
1403 | struct kobj_attribute *attr, | |
1404 | const char *buf, size_t len) | |
1405 | { | |
1406 | int rc = -EINVAL; | |
1407 | ||
1408 | if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) | |
1409 | rc = dump_set_type(DUMP_TYPE_NONE); | |
1410 | else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) | |
1411 | rc = dump_set_type(DUMP_TYPE_CCW); | |
1412 | else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) | |
1413 | rc = dump_set_type(DUMP_TYPE_FCP); | |
1414 | return (rc != 0) ? rc : len; | |
1415 | } | |
1416 | ||
1417 | static struct kobj_attribute dump_type_attr = | |
1418 | __ATTR(dump_type, 0644, dump_type_show, dump_type_store); | |
1419 | ||
1420 | static struct kset *dump_kset; | |
1421 | ||
0894b3ae MH |
1422 | static void diag308_dump(void *dump_block) |
1423 | { | |
1424 | diag308(DIAG308_SET, dump_block); | |
1425 | while (1) { | |
1426 | if (diag308(DIAG308_DUMP, NULL) != 0x302) | |
1427 | break; | |
1428 | udelay_simple(USEC_PER_SEC); | |
1429 | } | |
1430 | } | |
1431 | ||
2c2df118 | 1432 | static void __dump_run(void *unused) |
99ca4e58 MH |
1433 | { |
1434 | struct ccw_dev_id devid; | |
1435 | static char buf[100]; | |
1436 | ||
1437 | switch (dump_method) { | |
1438 | case DUMP_METHOD_CCW_CIO: | |
18e22a17 | 1439 | devid.ssid = dump_block_ccw->ipl_info.ccw.ssid; |
99ca4e58 | 1440 | devid.devno = dump_block_ccw->ipl_info.ccw.devno; |
99ca4e58 MH |
1441 | reipl_ccw_dev(&devid); |
1442 | break; | |
1443 | case DUMP_METHOD_CCW_VM: | |
99ca4e58 MH |
1444 | sprintf(buf, "STORE STATUS"); |
1445 | __cpcmd(buf, NULL, 0, NULL); | |
1446 | sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno); | |
1447 | __cpcmd(buf, NULL, 0, NULL); | |
1448 | break; | |
1449 | case DUMP_METHOD_CCW_DIAG: | |
0894b3ae | 1450 | diag308_dump(dump_block_ccw); |
99ca4e58 MH |
1451 | break; |
1452 | case DUMP_METHOD_FCP_DIAG: | |
0894b3ae | 1453 | diag308_dump(dump_block_fcp); |
99ca4e58 | 1454 | break; |
2c2df118 HC |
1455 | default: |
1456 | break; | |
99ca4e58 | 1457 | } |
2c2df118 HC |
1458 | } |
1459 | ||
1460 | static void dump_run(struct shutdown_trigger *trigger) | |
1461 | { | |
1462 | if (dump_method == DUMP_METHOD_NONE) | |
1463 | return; | |
1464 | smp_send_stop(); | |
8b646bd7 | 1465 | smp_call_ipl_cpu(__dump_run, NULL); |
99ca4e58 MH |
1466 | } |
1467 | ||
ff6b8ea6 MH |
1468 | static int __init dump_ccw_init(void) |
1469 | { | |
1470 | int rc; | |
1471 | ||
1472 | dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); | |
1473 | if (!dump_block_ccw) | |
1474 | return -ENOMEM; | |
d91885be | 1475 | rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
ff6b8ea6 MH |
1476 | if (rc) { |
1477 | free_page((unsigned long)dump_block_ccw); | |
1478 | return rc; | |
1479 | } | |
1480 | dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN; | |
1481 | dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1482 | dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; |
ff6b8ea6 | 1483 | dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; |
411ed322 | 1484 | dump_capabilities |= DUMP_TYPE_CCW; |
ff6b8ea6 MH |
1485 | return 0; |
1486 | } | |
1487 | ||
ff6b8ea6 MH |
1488 | static int __init dump_fcp_init(void) |
1489 | { | |
1490 | int rc; | |
1491 | ||
05dd2530 | 1492 | if (!sclp_ipl_info.has_dump) |
ff6b8ea6 MH |
1493 | return 0; /* LDIPL DUMP is not installed */ |
1494 | if (!diag308_set_works) | |
1495 | return 0; | |
1496 | dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); | |
1497 | if (!dump_block_fcp) | |
1498 | return -ENOMEM; | |
d91885be | 1499 | rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
ff6b8ea6 MH |
1500 | if (rc) { |
1501 | free_page((unsigned long)dump_block_fcp); | |
1502 | return rc; | |
1503 | } | |
1504 | dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN; | |
1505 | dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; | |
fbb04f38 | 1506 | dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN; |
ff6b8ea6 MH |
1507 | dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP; |
1508 | dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP; | |
411ed322 | 1509 | dump_capabilities |= DUMP_TYPE_FCP; |
ff6b8ea6 MH |
1510 | return 0; |
1511 | } | |
1512 | ||
2bc89b5e | 1513 | static int __init dump_init(void) |
ff6b8ea6 MH |
1514 | { |
1515 | int rc; | |
1516 | ||
f62ed9e3 | 1517 | dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
d91885be GKH |
1518 | if (!dump_kset) |
1519 | return -ENOMEM; | |
99ca4e58 | 1520 | rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
ff6b8ea6 | 1521 | if (rc) { |
d91885be | 1522 | kset_unregister(dump_kset); |
ff6b8ea6 MH |
1523 | return rc; |
1524 | } | |
1525 | rc = dump_ccw_init(); | |
1526 | if (rc) | |
1527 | return rc; | |
1528 | rc = dump_fcp_init(); | |
1529 | if (rc) | |
1530 | return rc; | |
411ed322 | 1531 | dump_set_type(DUMP_TYPE_NONE); |
ff6b8ea6 MH |
1532 | return 0; |
1533 | } | |
1534 | ||
2bc89b5e HC |
1535 | static struct shutdown_action __refdata dump_action = { |
1536 | .name = SHUTDOWN_ACTION_DUMP_STR, | |
1537 | .fn = dump_run, | |
1538 | .init = dump_init, | |
1539 | }; | |
99ca4e58 | 1540 | |
099b7651 FM |
1541 | static void dump_reipl_run(struct shutdown_trigger *trigger) |
1542 | { | |
a7df7a94 | 1543 | unsigned long ipib = (unsigned long) reipl_block_actual; |
fbe76568 HC |
1544 | unsigned int csum; |
1545 | ||
1546 | csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); | |
1547 | mem_assign_absolute(S390_lowcore.ipib, ipib); | |
1548 | mem_assign_absolute(S390_lowcore.ipib_checksum, csum); | |
099b7651 FM |
1549 | dump_run(trigger); |
1550 | } | |
1551 | ||
1552 | static int __init dump_reipl_init(void) | |
1553 | { | |
1554 | if (!diag308_set_works) | |
1555 | return -EOPNOTSUPP; | |
1556 | else | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static struct shutdown_action __refdata dump_reipl_action = { | |
1561 | .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, | |
1562 | .fn = dump_reipl_run, | |
1563 | .init = dump_reipl_init, | |
1564 | }; | |
1565 | ||
99ca4e58 MH |
1566 | /* |
1567 | * vmcmd shutdown action: Trigger vm command on shutdown. | |
1568 | */ | |
1569 | ||
1570 | static char vmcmd_on_reboot[128]; | |
1571 | static char vmcmd_on_panic[128]; | |
1572 | static char vmcmd_on_halt[128]; | |
1573 | static char vmcmd_on_poff[128]; | |
7dd6b334 | 1574 | static char vmcmd_on_restart[128]; |
99ca4e58 MH |
1575 | |
1576 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); | |
1577 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); | |
1578 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); | |
1579 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); | |
7dd6b334 | 1580 | DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
99ca4e58 MH |
1581 | |
1582 | static struct attribute *vmcmd_attrs[] = { | |
1583 | &sys_vmcmd_on_reboot_attr.attr, | |
1584 | &sys_vmcmd_on_panic_attr.attr, | |
1585 | &sys_vmcmd_on_halt_attr.attr, | |
1586 | &sys_vmcmd_on_poff_attr.attr, | |
7dd6b334 | 1587 | &sys_vmcmd_on_restart_attr.attr, |
99ca4e58 MH |
1588 | NULL, |
1589 | }; | |
1590 | ||
1591 | static struct attribute_group vmcmd_attr_group = { | |
1592 | .attrs = vmcmd_attrs, | |
1593 | }; | |
1594 | ||
1595 | static struct kset *vmcmd_kset; | |
1596 | ||
1597 | static void vmcmd_run(struct shutdown_trigger *trigger) | |
ff6b8ea6 | 1598 | { |
8143adaf | 1599 | char *cmd; |
99ca4e58 MH |
1600 | |
1601 | if (strcmp(trigger->name, ON_REIPL_STR) == 0) | |
1602 | cmd = vmcmd_on_reboot; | |
1603 | else if (strcmp(trigger->name, ON_PANIC_STR) == 0) | |
1604 | cmd = vmcmd_on_panic; | |
1605 | else if (strcmp(trigger->name, ON_HALT_STR) == 0) | |
1606 | cmd = vmcmd_on_halt; | |
1607 | else if (strcmp(trigger->name, ON_POFF_STR) == 0) | |
1608 | cmd = vmcmd_on_poff; | |
7dd6b334 MH |
1609 | else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
1610 | cmd = vmcmd_on_restart; | |
99ca4e58 MH |
1611 | else |
1612 | return; | |
1613 | ||
1614 | if (strlen(cmd) == 0) | |
1615 | return; | |
8143adaf | 1616 | __cpcmd(cmd, NULL, 0, NULL); |
99ca4e58 MH |
1617 | } |
1618 | ||
1619 | static int vmcmd_init(void) | |
1620 | { | |
1621 | if (!MACHINE_IS_VM) | |
b8e660b8 | 1622 | return -EOPNOTSUPP; |
99ca4e58 MH |
1623 | vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
1624 | if (!vmcmd_kset) | |
1625 | return -ENOMEM; | |
1626 | return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); | |
1627 | } | |
1628 | ||
1629 | static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, | |
1630 | vmcmd_run, vmcmd_init}; | |
1631 | ||
1632 | /* | |
1633 | * stop shutdown action: Stop Linux on shutdown. | |
1634 | */ | |
1635 | ||
1636 | static void stop_run(struct shutdown_trigger *trigger) | |
1637 | { | |
e1202eda MH |
1638 | if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
1639 | strcmp(trigger->name, ON_RESTART_STR) == 0) | |
c6547497 | 1640 | disabled_wait((unsigned long) __builtin_return_address(0)); |
8b646bd7 | 1641 | smp_stop_cpu(); |
99ca4e58 MH |
1642 | } |
1643 | ||
1644 | static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, | |
1645 | stop_run, NULL}; | |
1646 | ||
1647 | /* action list */ | |
1648 | ||
1649 | static struct shutdown_action *shutdown_actions_list[] = { | |
099b7651 FM |
1650 | &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
1651 | &vmcmd_action, &stop_action}; | |
99ca4e58 MH |
1652 | #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
1653 | ||
1654 | /* | |
1655 | * Trigger section | |
1656 | */ | |
1657 | ||
1658 | static struct kset *shutdown_actions_kset; | |
1659 | ||
1660 | static int set_trigger(const char *buf, struct shutdown_trigger *trigger, | |
1661 | size_t len) | |
1662 | { | |
1663 | int i; | |
099b7651 | 1664 | |
99ca4e58 | 1665 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
099b7651 | 1666 | if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
81088819 FM |
1667 | if (shutdown_actions_list[i]->init_rc) { |
1668 | return shutdown_actions_list[i]->init_rc; | |
1669 | } else { | |
1670 | trigger->action = shutdown_actions_list[i]; | |
1671 | return len; | |
1672 | } | |
99ca4e58 MH |
1673 | } |
1674 | } | |
1675 | return -EINVAL; | |
1676 | } | |
1677 | ||
1678 | /* on reipl */ | |
1679 | ||
1680 | static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, | |
1681 | &reipl_action}; | |
1682 | ||
1683 | static ssize_t on_reboot_show(struct kobject *kobj, | |
1684 | struct kobj_attribute *attr, char *page) | |
1685 | { | |
1686 | return sprintf(page, "%s\n", on_reboot_trigger.action->name); | |
1687 | } | |
1688 | ||
1689 | static ssize_t on_reboot_store(struct kobject *kobj, | |
1690 | struct kobj_attribute *attr, | |
1691 | const char *buf, size_t len) | |
1692 | { | |
1693 | return set_trigger(buf, &on_reboot_trigger, len); | |
1694 | } | |
0f024379 | 1695 | static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot); |
99ca4e58 MH |
1696 | |
1697 | static void do_machine_restart(char *__unused) | |
1698 | { | |
1699 | smp_send_stop(); | |
1700 | on_reboot_trigger.action->fn(&on_reboot_trigger); | |
1701 | reipl_run(NULL); | |
1702 | } | |
1703 | void (*_machine_restart)(char *command) = do_machine_restart; | |
1704 | ||
1705 | /* on panic */ | |
1706 | ||
1707 | static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; | |
1708 | ||
1709 | static ssize_t on_panic_show(struct kobject *kobj, | |
1710 | struct kobj_attribute *attr, char *page) | |
1711 | { | |
1712 | return sprintf(page, "%s\n", on_panic_trigger.action->name); | |
1713 | } | |
1714 | ||
1715 | static ssize_t on_panic_store(struct kobject *kobj, | |
1716 | struct kobj_attribute *attr, | |
1717 | const char *buf, size_t len) | |
1718 | { | |
1719 | return set_trigger(buf, &on_panic_trigger, len); | |
1720 | } | |
0f024379 | 1721 | static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic); |
99ca4e58 MH |
1722 | |
1723 | static void do_panic(void) | |
1724 | { | |
3ab121ab | 1725 | lgr_info_log(); |
99ca4e58 MH |
1726 | on_panic_trigger.action->fn(&on_panic_trigger); |
1727 | stop_run(&on_panic_trigger); | |
1728 | } | |
1729 | ||
7dd6b334 MH |
1730 | /* on restart */ |
1731 | ||
1732 | static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, | |
e1202eda | 1733 | &stop_action}; |
7dd6b334 MH |
1734 | |
1735 | static ssize_t on_restart_show(struct kobject *kobj, | |
1736 | struct kobj_attribute *attr, char *page) | |
1737 | { | |
1738 | return sprintf(page, "%s\n", on_restart_trigger.action->name); | |
1739 | } | |
1740 | ||
1741 | static ssize_t on_restart_store(struct kobject *kobj, | |
1742 | struct kobj_attribute *attr, | |
1743 | const char *buf, size_t len) | |
1744 | { | |
1745 | return set_trigger(buf, &on_restart_trigger, len); | |
1746 | } | |
0f024379 | 1747 | static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart); |
7dd6b334 | 1748 | |
8b646bd7 | 1749 | static void __do_restart(void *ignore) |
7dd6b334 | 1750 | { |
fa7c0043 | 1751 | __arch_local_irq_stosm(0x04); /* enable DAT */ |
7dd6b334 | 1752 | smp_send_stop(); |
60a0c68d MH |
1753 | #ifdef CONFIG_CRASH_DUMP |
1754 | crash_kexec(NULL); | |
1755 | #endif | |
7dd6b334 MH |
1756 | on_restart_trigger.action->fn(&on_restart_trigger); |
1757 | stop_run(&on_restart_trigger); | |
1758 | } | |
1759 | ||
8b646bd7 MS |
1760 | void do_restart(void) |
1761 | { | |
3ab121ab MH |
1762 | tracing_off(); |
1763 | debug_locks_off(); | |
1764 | lgr_info_log(); | |
8b646bd7 MS |
1765 | smp_call_online_cpu(__do_restart, NULL); |
1766 | } | |
1767 | ||
99ca4e58 MH |
1768 | /* on halt */ |
1769 | ||
1770 | static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; | |
1771 | ||
1772 | static ssize_t on_halt_show(struct kobject *kobj, | |
1773 | struct kobj_attribute *attr, char *page) | |
1774 | { | |
1775 | return sprintf(page, "%s\n", on_halt_trigger.action->name); | |
1776 | } | |
1777 | ||
1778 | static ssize_t on_halt_store(struct kobject *kobj, | |
1779 | struct kobj_attribute *attr, | |
1780 | const char *buf, size_t len) | |
1781 | { | |
1782 | return set_trigger(buf, &on_halt_trigger, len); | |
1783 | } | |
0f024379 | 1784 | static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt); |
99ca4e58 MH |
1785 | |
1786 | static void do_machine_halt(void) | |
1787 | { | |
1788 | smp_send_stop(); | |
1789 | on_halt_trigger.action->fn(&on_halt_trigger); | |
1790 | stop_run(&on_halt_trigger); | |
1791 | } | |
1792 | void (*_machine_halt)(void) = do_machine_halt; | |
1793 | ||
1794 | /* on power off */ | |
1795 | ||
1796 | static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; | |
1797 | ||
1798 | static ssize_t on_poff_show(struct kobject *kobj, | |
1799 | struct kobj_attribute *attr, char *page) | |
1800 | { | |
1801 | return sprintf(page, "%s\n", on_poff_trigger.action->name); | |
1802 | } | |
1803 | ||
1804 | static ssize_t on_poff_store(struct kobject *kobj, | |
1805 | struct kobj_attribute *attr, | |
1806 | const char *buf, size_t len) | |
1807 | { | |
1808 | return set_trigger(buf, &on_poff_trigger, len); | |
1809 | } | |
0f024379 | 1810 | static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff); |
99ca4e58 MH |
1811 | |
1812 | static void do_machine_power_off(void) | |
1813 | { | |
1814 | smp_send_stop(); | |
1815 | on_poff_trigger.action->fn(&on_poff_trigger); | |
1816 | stop_run(&on_poff_trigger); | |
1817 | } | |
1818 | void (*_machine_power_off)(void) = do_machine_power_off; | |
1819 | ||
0f024379 SO |
1820 | static struct attribute *shutdown_action_attrs[] = { |
1821 | &on_restart_attr.attr, | |
1822 | &on_reboot_attr.attr, | |
1823 | &on_panic_attr.attr, | |
1824 | &on_halt_attr.attr, | |
1825 | &on_poff_attr.attr, | |
1826 | NULL, | |
1827 | }; | |
1828 | ||
1829 | static struct attribute_group shutdown_action_attr_group = { | |
1830 | .attrs = shutdown_action_attrs, | |
1831 | }; | |
1832 | ||
99ca4e58 MH |
1833 | static void __init shutdown_triggers_init(void) |
1834 | { | |
d91885be | 1835 | shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
f62ed9e3 | 1836 | firmware_kobj); |
d91885be | 1837 | if (!shutdown_actions_kset) |
99ca4e58 | 1838 | goto fail; |
0f024379 SO |
1839 | if (sysfs_create_group(&shutdown_actions_kset->kobj, |
1840 | &shutdown_action_attr_group)) | |
7dd6b334 | 1841 | goto fail; |
99ca4e58 MH |
1842 | return; |
1843 | fail: | |
1844 | panic("shutdown_triggers_init failed\n"); | |
1845 | } | |
1846 | ||
1847 | static void __init shutdown_actions_init(void) | |
1848 | { | |
1849 | int i; | |
1850 | ||
1851 | for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { | |
1852 | if (!shutdown_actions_list[i]->init) | |
1853 | continue; | |
81088819 FM |
1854 | shutdown_actions_list[i]->init_rc = |
1855 | shutdown_actions_list[i]->init(); | |
ff6b8ea6 | 1856 | } |
ff6b8ea6 MH |
1857 | } |
1858 | ||
1859 | static int __init s390_ipl_init(void) | |
1860 | { | |
69928601 MH |
1861 | char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40}; |
1862 | ||
d09293ae | 1863 | sclp_get_ipl_info(&sclp_ipl_info); |
69928601 MH |
1864 | /* |
1865 | * Fix loadparm: There are systems where the (SCSI) LOADPARM | |
1866 | * returned by read SCP info is invalid (contains EBCDIC blanks) | |
1867 | * when the system has been booted via diag308. In that case we use | |
1868 | * the value from diag308, if available. | |
1869 | * | |
1870 | * There are also systems where diag308 store does not work in | |
1871 | * case the system is booted from HMC. Fortunately in this case | |
1872 | * READ SCP info provides the correct value. | |
1873 | */ | |
1874 | if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && | |
1875 | diag308_set_works) | |
1876 | memcpy(sclp_ipl_info.loadparm, ipl_block.hdr.loadparm, | |
1877 | LOADPARM_LEN); | |
99ca4e58 MH |
1878 | shutdown_actions_init(); |
1879 | shutdown_triggers_init(); | |
ff6b8ea6 MH |
1880 | return 0; |
1881 | } | |
1882 | ||
1883 | __initcall(s390_ipl_init); | |
15e9b586 | 1884 | |
99ca4e58 MH |
1885 | static void __init strncpy_skip_quote(char *dst, char *src, int n) |
1886 | { | |
1887 | int sx, dx; | |
1888 | ||
1889 | dx = 0; | |
1890 | for (sx = 0; src[sx] != 0; sx++) { | |
1891 | if (src[sx] == '"') | |
1892 | continue; | |
1893 | dst[dx++] = src[sx]; | |
1894 | if (dx >= n) | |
1895 | break; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | static int __init vmcmd_on_reboot_setup(char *str) | |
1900 | { | |
1901 | if (!MACHINE_IS_VM) | |
1902 | return 1; | |
1903 | strncpy_skip_quote(vmcmd_on_reboot, str, 127); | |
1904 | vmcmd_on_reboot[127] = 0; | |
1905 | on_reboot_trigger.action = &vmcmd_action; | |
1906 | return 1; | |
1907 | } | |
1908 | __setup("vmreboot=", vmcmd_on_reboot_setup); | |
1909 | ||
1910 | static int __init vmcmd_on_panic_setup(char *str) | |
1911 | { | |
1912 | if (!MACHINE_IS_VM) | |
1913 | return 1; | |
1914 | strncpy_skip_quote(vmcmd_on_panic, str, 127); | |
1915 | vmcmd_on_panic[127] = 0; | |
1916 | on_panic_trigger.action = &vmcmd_action; | |
1917 | return 1; | |
1918 | } | |
1919 | __setup("vmpanic=", vmcmd_on_panic_setup); | |
1920 | ||
1921 | static int __init vmcmd_on_halt_setup(char *str) | |
1922 | { | |
1923 | if (!MACHINE_IS_VM) | |
1924 | return 1; | |
1925 | strncpy_skip_quote(vmcmd_on_halt, str, 127); | |
1926 | vmcmd_on_halt[127] = 0; | |
1927 | on_halt_trigger.action = &vmcmd_action; | |
1928 | return 1; | |
1929 | } | |
1930 | __setup("vmhalt=", vmcmd_on_halt_setup); | |
1931 | ||
1932 | static int __init vmcmd_on_poff_setup(char *str) | |
1933 | { | |
1934 | if (!MACHINE_IS_VM) | |
1935 | return 1; | |
1936 | strncpy_skip_quote(vmcmd_on_poff, str, 127); | |
1937 | vmcmd_on_poff[127] = 0; | |
1938 | on_poff_trigger.action = &vmcmd_action; | |
1939 | return 1; | |
1940 | } | |
1941 | __setup("vmpoff=", vmcmd_on_poff_setup); | |
1942 | ||
1943 | static int on_panic_notify(struct notifier_block *self, | |
1944 | unsigned long event, void *data) | |
1945 | { | |
1946 | do_panic(); | |
1947 | return NOTIFY_OK; | |
1948 | } | |
1949 | ||
1950 | static struct notifier_block on_panic_nb = { | |
1951 | .notifier_call = on_panic_notify, | |
7e9b580e | 1952 | .priority = INT_MIN, |
99ca4e58 MH |
1953 | }; |
1954 | ||
1955 | void __init setup_ipl(void) | |
1956 | { | |
1957 | ipl_info.type = get_ipl_type(); | |
1958 | switch (ipl_info.type) { | |
1959 | case IPL_TYPE_CCW: | |
18e22a17 | 1960 | ipl_info.data.ccw.dev_id.ssid = ipl_ssid; |
99ca4e58 | 1961 | ipl_info.data.ccw.dev_id.devno = ipl_devno; |
99ca4e58 MH |
1962 | break; |
1963 | case IPL_TYPE_FCP: | |
1964 | case IPL_TYPE_FCP_DUMP: | |
18e22a17 | 1965 | ipl_info.data.fcp.dev_id.ssid = 0; |
99ca4e58 MH |
1966 | ipl_info.data.fcp.dev_id.devno = |
1967 | IPL_PARMBLOCK_START->ipl_info.fcp.devno; | |
99ca4e58 MH |
1968 | ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn; |
1969 | ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun; | |
1970 | break; | |
1971 | case IPL_TYPE_NSS: | |
1972 | strncpy(ipl_info.data.nss.name, kernel_nss_name, | |
1973 | sizeof(ipl_info.data.nss.name)); | |
1974 | break; | |
1975 | case IPL_TYPE_UNKNOWN: | |
99ca4e58 MH |
1976 | /* We have no info to copy */ |
1977 | break; | |
1978 | } | |
1979 | atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); | |
1980 | } | |
1981 | ||
a0443fbb HB |
1982 | void __init ipl_update_parameters(void) |
1983 | { | |
3a95e8eb MH |
1984 | int rc; |
1985 | ||
1986 | rc = diag308(DIAG308_STORE, &ipl_block); | |
1987 | if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG)) | |
a0443fbb HB |
1988 | diag308_set_works = 1; |
1989 | } | |
1990 | ||
6fc321fd HC |
1991 | void __init ipl_save_parameters(void) |
1992 | { | |
1993 | struct cio_iplinfo iplinfo; | |
6fc321fd HC |
1994 | void *src, *dst; |
1995 | ||
1996 | if (cio_get_iplinfo(&iplinfo)) | |
1997 | return; | |
1998 | ||
18e22a17 | 1999 | ipl_ssid = iplinfo.ssid; |
6fc321fd HC |
2000 | ipl_devno = iplinfo.devno; |
2001 | ipl_flags |= IPL_DEVNO_VALID; | |
2002 | if (!iplinfo.is_qdio) | |
2003 | return; | |
2004 | ipl_flags |= IPL_PARMBLOCK_VALID; | |
cbb870c8 | 2005 | src = (void *)(unsigned long)S390_lowcore.ipl_parmblock_ptr; |
6fc321fd HC |
2006 | dst = (void *)IPL_PARMBLOCK_ORIGIN; |
2007 | memmove(dst, src, PAGE_SIZE); | |
cbb870c8 | 2008 | S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN; |
6fc321fd HC |
2009 | } |
2010 | ||
15e9b586 HC |
2011 | static LIST_HEAD(rcall); |
2012 | static DEFINE_MUTEX(rcall_mutex); | |
2013 | ||
2014 | void register_reset_call(struct reset_call *reset) | |
2015 | { | |
2016 | mutex_lock(&rcall_mutex); | |
2017 | list_add(&reset->list, &rcall); | |
2018 | mutex_unlock(&rcall_mutex); | |
2019 | } | |
2020 | EXPORT_SYMBOL_GPL(register_reset_call); | |
2021 | ||
2022 | void unregister_reset_call(struct reset_call *reset) | |
2023 | { | |
2024 | mutex_lock(&rcall_mutex); | |
2025 | list_del(&reset->list); | |
2026 | mutex_unlock(&rcall_mutex); | |
2027 | } | |
2028 | EXPORT_SYMBOL_GPL(unregister_reset_call); | |
2029 | ||
2030 | static void do_reset_calls(void) | |
2031 | { | |
2032 | struct reset_call *reset; | |
2033 | ||
9dc7356e MH |
2034 | if (diag308_set_works) { |
2035 | diag308_reset(); | |
2036 | return; | |
2037 | } | |
15e9b586 HC |
2038 | list_for_each_entry(reset, &rcall, list) |
2039 | reset->fn(); | |
2040 | } | |
2041 | ||
c5dd8586 | 2042 | u32 dump_prefix_page; |
15e9b586 | 2043 | |
10ad34bc MS |
2044 | void s390_reset_system(void (*fn_pre)(void), |
2045 | void (*fn_post)(void *), void *data) | |
15e9b586 HC |
2046 | { |
2047 | struct _lowcore *lc; | |
2048 | ||
15e9b586 | 2049 | lc = (struct _lowcore *)(unsigned long) store_prefix(); |
a45e1414 MH |
2050 | |
2051 | /* Stack for interrupt/machine check handler */ | |
15e9b586 HC |
2052 | lc->panic_stack = S390_lowcore.panic_stack; |
2053 | ||
da1cf23e | 2054 | /* Save prefix page address for dump case */ |
c5dd8586 | 2055 | dump_prefix_page = (u32)(unsigned long) lc; |
da1cf23e | 2056 | |
15e9b586 HC |
2057 | /* Disable prefixing */ |
2058 | set_prefix(0); | |
2059 | ||
2060 | /* Disable lowcore protection */ | |
2061 | __ctl_clear_bit(0,28); | |
2062 | ||
2063 | /* Set new machine check handler */ | |
e258d719 | 2064 | S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT; |
15e9b586 | 2065 | S390_lowcore.mcck_new_psw.addr = |
ab14de6c | 2066 | PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler; |
a45e1414 MH |
2067 | |
2068 | /* Set new program check handler */ | |
e258d719 | 2069 | S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT; |
a45e1414 | 2070 | S390_lowcore.program_new_psw.addr = |
ab14de6c | 2071 | PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler; |
a45e1414 | 2072 | |
852ffd0f MH |
2073 | /* |
2074 | * Clear subchannel ID and number to signal new kernel that no CCW or | |
2075 | * SCSI IPL has been done (for kexec and kdump) | |
2076 | */ | |
2077 | S390_lowcore.subchannel_id = 0; | |
2078 | S390_lowcore.subchannel_nr = 0; | |
2079 | ||
60a0c68d MH |
2080 | /* Store status at absolute zero */ |
2081 | store_status(); | |
2082 | ||
10ad34bc MS |
2083 | /* Call function before reset */ |
2084 | if (fn_pre) | |
2085 | fn_pre(); | |
15e9b586 | 2086 | do_reset_calls(); |
10ad34bc MS |
2087 | /* Call function after reset */ |
2088 | if (fn_post) | |
2089 | fn_post(data); | |
15e9b586 | 2090 | } |