2 * include/asm-s390/lowcore.h
5 * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Hartmut Penner (hp@de.ibm.com),
7 * Martin Schwidefsky (schwidefsky@de.ibm.com),
8 * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
11 #ifndef _ASM_S390_LOWCORE_H
12 #define _ASM_S390_LOWCORE_H
14 #define __LC_IPL_PARMBLOCK_PTR 0x0014
15 #define __LC_EXT_PARAMS 0x0080
16 #define __LC_CPU_ADDRESS 0x0084
17 #define __LC_EXT_INT_CODE 0x0086
19 #define __LC_SVC_ILC 0x0088
20 #define __LC_SVC_INT_CODE 0x008a
21 #define __LC_PGM_ILC 0x008c
22 #define __LC_PGM_INT_CODE 0x008e
24 #define __LC_PER_ATMID 0x0096
25 #define __LC_PER_ADDRESS 0x0098
26 #define __LC_PER_ACCESS_ID 0x00a1
27 #define __LC_AR_MODE_ID 0x00a3
29 #define __LC_SUBCHANNEL_ID 0x00b8
30 #define __LC_SUBCHANNEL_NR 0x00ba
31 #define __LC_IO_INT_PARM 0x00bc
32 #define __LC_IO_INT_WORD 0x00c0
33 #define __LC_MCCK_CODE 0x00e8
35 #define __LC_DUMP_REIPL 0x0e00
38 #define __LC_EXT_OLD_PSW 0x0018
39 #define __LC_SVC_OLD_PSW 0x0020
40 #define __LC_PGM_OLD_PSW 0x0028
41 #define __LC_MCK_OLD_PSW 0x0030
42 #define __LC_IO_OLD_PSW 0x0038
43 #define __LC_EXT_NEW_PSW 0x0058
44 #define __LC_SVC_NEW_PSW 0x0060
45 #define __LC_PGM_NEW_PSW 0x0068
46 #define __LC_MCK_NEW_PSW 0x0070
47 #define __LC_IO_NEW_PSW 0x0078
48 #define __LC_SAVE_AREA 0x0200
49 #define __LC_RETURN_PSW 0x0240
50 #define __LC_RETURN_MCCK_PSW 0x0248
51 #define __LC_SYNC_ENTER_TIMER 0x0250
52 #define __LC_ASYNC_ENTER_TIMER 0x0258
53 #define __LC_EXIT_TIMER 0x0260
54 #define __LC_USER_TIMER 0x0268
55 #define __LC_SYSTEM_TIMER 0x0270
56 #define __LC_STEAL_TIMER 0x0278
57 #define __LC_LAST_UPDATE_TIMER 0x0280
58 #define __LC_LAST_UPDATE_CLOCK 0x0288
59 #define __LC_CURRENT 0x0290
60 #define __LC_THREAD_INFO 0x0294
61 #define __LC_KERNEL_STACK 0x0298
62 #define __LC_ASYNC_STACK 0x029c
63 #define __LC_PANIC_STACK 0x02a0
64 #define __LC_KERNEL_ASCE 0x02a4
65 #define __LC_USER_ASCE 0x02a8
66 #define __LC_USER_EXEC_ASCE 0x02ac
67 #define __LC_CPUID 0x02b0
68 #define __LC_INT_CLOCK 0x02c8
69 #define __LC_MACHINE_FLAGS 0x02d8
70 #define __LC_IRB 0x0300
71 #define __LC_PFAULT_INTPARM 0x0080
72 #define __LC_CPU_TIMER_SAVE_AREA 0x00d8
73 #define __LC_CLOCK_COMP_SAVE_AREA 0x00e0
74 #define __LC_PSW_SAVE_AREA 0x0100
75 #define __LC_PREFIX_SAVE_AREA 0x0108
76 #define __LC_AREGS_SAVE_AREA 0x0120
77 #define __LC_FPREGS_SAVE_AREA 0x0160
78 #define __LC_GPREGS_SAVE_AREA 0x0180
79 #define __LC_CREGS_SAVE_AREA 0x01c0
81 #define __LC_LAST_BREAK 0x0110
82 #define __LC_EXT_OLD_PSW 0x0130
83 #define __LC_SVC_OLD_PSW 0x0140
84 #define __LC_PGM_OLD_PSW 0x0150
85 #define __LC_MCK_OLD_PSW 0x0160
86 #define __LC_IO_OLD_PSW 0x0170
87 #define __LC_EXT_NEW_PSW 0x01b0
88 #define __LC_SVC_NEW_PSW 0x01c0
89 #define __LC_PGM_NEW_PSW 0x01d0
90 #define __LC_MCK_NEW_PSW 0x01e0
91 #define __LC_IO_NEW_PSW 0x01f0
92 #define __LC_SAVE_AREA 0x0200
93 #define __LC_RETURN_PSW 0x0280
94 #define __LC_RETURN_MCCK_PSW 0x0290
95 #define __LC_SYNC_ENTER_TIMER 0x02a0
96 #define __LC_ASYNC_ENTER_TIMER 0x02a8
97 #define __LC_EXIT_TIMER 0x02b0
98 #define __LC_USER_TIMER 0x02b8
99 #define __LC_SYSTEM_TIMER 0x02c0
100 #define __LC_STEAL_TIMER 0x02c8
101 #define __LC_LAST_UPDATE_TIMER 0x02d0
102 #define __LC_LAST_UPDATE_CLOCK 0x02d8
103 #define __LC_CURRENT 0x02e0
104 #define __LC_THREAD_INFO 0x02e8
105 #define __LC_KERNEL_STACK 0x02f0
106 #define __LC_ASYNC_STACK 0x02f8
107 #define __LC_PANIC_STACK 0x0300
108 #define __LC_KERNEL_ASCE 0x0308
109 #define __LC_USER_ASCE 0x0310
110 #define __LC_USER_EXEC_ASCE 0x0318
111 #define __LC_CPUID 0x0320
112 #define __LC_INT_CLOCK 0x0340
113 #define __LC_VDSO_PER_CPU 0x0350
114 #define __LC_MACHINE_FLAGS 0x0358
115 #define __LC_IRB 0x0380
116 #define __LC_PASTE 0x03c0
117 #define __LC_PFAULT_INTPARM 0x11b8
118 #define __LC_FPREGS_SAVE_AREA 0x1200
119 #define __LC_GPREGS_SAVE_AREA 0x1280
120 #define __LC_PSW_SAVE_AREA 0x1300
121 #define __LC_PREFIX_SAVE_AREA 0x1318
122 #define __LC_FP_CREG_SAVE_AREA 0x131c
123 #define __LC_TODREG_SAVE_AREA 0x1324
124 #define __LC_CPU_TIMER_SAVE_AREA 0x1328
125 #define __LC_CLOCK_COMP_SAVE_AREA 0x1331
126 #define __LC_AREGS_SAVE_AREA 0x1340
127 #define __LC_CREGS_SAVE_AREA 0x1380
128 #endif /* __s390x__ */
132 #include <asm/cpuid.h>
133 #include <asm/ptrace.h>
134 #include <linux/types.h>
136 void restart_int_handler(void);
137 void ext_int_handler(void);
138 void system_call(void);
139 void pgm_check_handler(void);
140 void mcck_int_handler(void);
141 void io_int_handler(void);
143 struct save_area_s390 {
155 } __attribute__((packed));
157 struct save_area_s390x {
171 } __attribute__((packed));
174 struct save_area_s390 s390;
175 struct save_area_s390x s390x;
178 #define SAVE_AREA_BASE_S390 0xd4
179 #define SAVE_AREA_BASE_S390X 0x1200
182 #define SAVE_AREA_SIZE sizeof(struct save_area_s390)
183 #define SAVE_AREA_BASE SAVE_AREA_BASE_S390
185 #define SAVE_AREA_SIZE sizeof(struct save_area_s390x)
186 #define SAVE_AREA_BASE SAVE_AREA_BASE_S390X
192 /* 0x0000 - 0x01ff: defined by architecture */
193 psw_t restart_psw; /* 0x0000 */
194 __u32 ccw2[4]; /* 0x0008 */
195 psw_t external_old_psw; /* 0x0018 */
196 psw_t svc_old_psw; /* 0x0020 */
197 psw_t program_old_psw; /* 0x0028 */
198 psw_t mcck_old_psw; /* 0x0030 */
199 psw_t io_old_psw; /* 0x0038 */
200 __u8 pad_0x0040[0x0058-0x0040]; /* 0x0040 */
201 psw_t external_new_psw; /* 0x0058 */
202 psw_t svc_new_psw; /* 0x0060 */
203 psw_t program_new_psw; /* 0x0068 */
204 psw_t mcck_new_psw; /* 0x0070 */
205 psw_t io_new_psw; /* 0x0078 */
206 __u32 ext_params; /* 0x0080 */
207 __u16 cpu_addr; /* 0x0084 */
208 __u16 ext_int_code; /* 0x0086 */
209 __u16 svc_ilc; /* 0x0088 */
210 __u16 svc_code; /* 0x008a */
211 __u16 pgm_ilc; /* 0x008c */
212 __u16 pgm_code; /* 0x008e */
213 __u32 trans_exc_code; /* 0x0090 */
214 __u16 mon_class_num; /* 0x0094 */
215 __u16 per_perc_atmid; /* 0x0096 */
216 __u32 per_address; /* 0x0098 */
217 __u32 monitor_code; /* 0x009c */
218 __u8 exc_access_id; /* 0x00a0 */
219 __u8 per_access_id; /* 0x00a1 */
220 __u8 pad_0x00a2[0x00b8-0x00a2]; /* 0x00a2 */
221 __u16 subchannel_id; /* 0x00b8 */
222 __u16 subchannel_nr; /* 0x00ba */
223 __u32 io_int_parm; /* 0x00bc */
224 __u32 io_int_word; /* 0x00c0 */
225 __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
226 __u32 stfl_fac_list; /* 0x00c8 */
227 __u8 pad_0x00cc[0x00d4-0x00cc]; /* 0x00cc */
228 __u32 extended_save_area_addr; /* 0x00d4 */
229 __u32 cpu_timer_save_area[2]; /* 0x00d8 */
230 __u32 clock_comp_save_area[2]; /* 0x00e0 */
231 __u32 mcck_interruption_code[2]; /* 0x00e8 */
232 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
233 __u32 external_damage_code; /* 0x00f4 */
234 __u32 failing_storage_address; /* 0x00f8 */
235 __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */
236 __u32 st_status_fixed_logout[4]; /* 0x0100 */
237 __u8 pad_0x0110[0x0120-0x0110]; /* 0x0110 */
239 /* CPU register save area: defined by architecture */
240 __u32 access_regs_save_area[16]; /* 0x0120 */
241 __u32 floating_pt_save_area[8]; /* 0x0160 */
242 __u32 gpregs_save_area[16]; /* 0x0180 */
243 __u32 cregs_save_area[16]; /* 0x01c0 */
246 __u32 save_area[16]; /* 0x0200 */
247 psw_t return_psw; /* 0x0240 */
248 psw_t return_mcck_psw; /* 0x0248 */
250 /* CPU time accounting values */
251 __u64 sync_enter_timer; /* 0x0250 */
252 __u64 async_enter_timer; /* 0x0258 */
253 __u64 exit_timer; /* 0x0260 */
254 __u64 user_timer; /* 0x0268 */
255 __u64 system_timer; /* 0x0270 */
256 __u64 steal_timer; /* 0x0278 */
257 __u64 last_update_timer; /* 0x0280 */
258 __u64 last_update_clock; /* 0x0288 */
260 /* Current process. */
261 __u32 current_task; /* 0x0290 */
262 __u32 thread_info; /* 0x0294 */
263 __u32 kernel_stack; /* 0x0298 */
265 /* Interrupt and panic stack. */
266 __u32 async_stack; /* 0x029c */
267 __u32 panic_stack; /* 0x02a0 */
269 /* Address space pointer. */
270 __u32 kernel_asce; /* 0x02a4 */
271 __u32 user_asce; /* 0x02a8 */
272 __u32 user_exec_asce; /* 0x02ac */
275 cpuid_t cpu_id; /* 0x02b0 */
276 __u32 cpu_nr; /* 0x02b8 */
277 __u32 softirq_pending; /* 0x02bc */
278 __u32 percpu_offset; /* 0x02c0 */
279 __u32 ext_call_fast; /* 0x02c4 */
280 __u64 int_clock; /* 0x02c8 */
281 __u64 clock_comparator; /* 0x02d0 */
282 __u32 machine_flags; /* 0x02d8 */
283 __u8 pad_0x02dc[0x0300-0x02dc]; /* 0x02dc */
285 /* Interrupt response block */
286 __u8 irb[64]; /* 0x0300 */
288 __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
291 * 0xe00 contains the address of the IPL Parameter Information
292 * block. Dump tools need IPIB for IPL after dump.
293 * Note: do not change the position of any fields in 0x0e00-0x0f00
295 __u32 ipib; /* 0x0e00 */
296 __u32 ipib_checksum; /* 0x0e04 */
298 /* Align to the top 1k of prefix area */
299 __u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */
300 #else /* !__s390x__ */
301 /* 0x0000 - 0x01ff: defined by architecture */
302 __u32 ccw1[2]; /* 0x0000 */
303 __u32 ccw2[4]; /* 0x0008 */
304 __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */
305 __u32 ext_params; /* 0x0080 */
306 __u16 cpu_addr; /* 0x0084 */
307 __u16 ext_int_code; /* 0x0086 */
308 __u16 svc_ilc; /* 0x0088 */
309 __u16 svc_code; /* 0x008a */
310 __u16 pgm_ilc; /* 0x008c */
311 __u16 pgm_code; /* 0x008e */
312 __u32 data_exc_code; /* 0x0090 */
313 __u16 mon_class_num; /* 0x0094 */
314 __u16 per_perc_atmid; /* 0x0096 */
315 addr_t per_address; /* 0x0098 */
316 __u8 exc_access_id; /* 0x00a0 */
317 __u8 per_access_id; /* 0x00a1 */
318 __u8 op_access_id; /* 0x00a2 */
319 __u8 ar_access_id; /* 0x00a3 */
320 __u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */
321 addr_t trans_exc_code; /* 0x00a8 */
322 addr_t monitor_code; /* 0x00b0 */
323 __u16 subchannel_id; /* 0x00b8 */
324 __u16 subchannel_nr; /* 0x00ba */
325 __u32 io_int_parm; /* 0x00bc */
326 __u32 io_int_word; /* 0x00c0 */
327 __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
328 __u32 stfl_fac_list; /* 0x00c8 */
329 __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */
330 __u32 mcck_interruption_code[2]; /* 0x00e8 */
331 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
332 __u32 external_damage_code; /* 0x00f4 */
333 addr_t failing_storage_address; /* 0x00f8 */
334 __u8 pad_0x0100[0x0120-0x0100]; /* 0x0100 */
335 psw_t restart_old_psw; /* 0x0120 */
336 psw_t external_old_psw; /* 0x0130 */
337 psw_t svc_old_psw; /* 0x0140 */
338 psw_t program_old_psw; /* 0x0150 */
339 psw_t mcck_old_psw; /* 0x0160 */
340 psw_t io_old_psw; /* 0x0170 */
341 __u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */
342 psw_t restart_psw; /* 0x01a0 */
343 psw_t external_new_psw; /* 0x01b0 */
344 psw_t svc_new_psw; /* 0x01c0 */
345 psw_t program_new_psw; /* 0x01d0 */
346 psw_t mcck_new_psw; /* 0x01e0 */
347 psw_t io_new_psw; /* 0x01f0 */
349 /* Entry/exit save area & return psws. */
350 __u64 save_area[16]; /* 0x0200 */
351 psw_t return_psw; /* 0x0280 */
352 psw_t return_mcck_psw; /* 0x0290 */
354 /* CPU accounting and timing values. */
355 __u64 sync_enter_timer; /* 0x02a0 */
356 __u64 async_enter_timer; /* 0x02a8 */
357 __u64 exit_timer; /* 0x02b0 */
358 __u64 user_timer; /* 0x02b8 */
359 __u64 system_timer; /* 0x02c0 */
360 __u64 steal_timer; /* 0x02c8 */
361 __u64 last_update_timer; /* 0x02d0 */
362 __u64 last_update_clock; /* 0x02d8 */
364 /* Current process. */
365 __u64 current_task; /* 0x02e0 */
366 __u64 thread_info; /* 0x02e8 */
367 __u64 kernel_stack; /* 0x02f0 */
369 /* Interrupt and panic stack. */
370 __u64 async_stack; /* 0x02f8 */
371 __u64 panic_stack; /* 0x0300 */
373 /* Address space pointer. */
374 __u64 kernel_asce; /* 0x0308 */
375 __u64 user_asce; /* 0x0310 */
376 __u64 user_exec_asce; /* 0x0318 */
379 cpuid_t cpu_id; /* 0x0320 */
380 __u32 cpu_nr; /* 0x0328 */
381 __u32 softirq_pending; /* 0x032c */
382 __u64 percpu_offset; /* 0x0330 */
383 __u64 ext_call_fast; /* 0x0338 */
384 __u64 int_clock; /* 0x0340 */
385 __u64 clock_comparator; /* 0x0348 */
386 __u64 vdso_per_cpu_data; /* 0x0350 */
387 __u64 machine_flags; /* 0x0358 */
388 __u8 pad_0x0360[0x0380-0x0360]; /* 0x0360 */
390 /* Interrupt response block. */
391 __u8 irb[64]; /* 0x0380 */
393 /* Per cpu primary space access list */
394 __u32 paste[16]; /* 0x03c0 */
396 __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
399 * 0xe00 contains the address of the IPL Parameter Information
400 * block. Dump tools need IPIB for IPL after dump.
401 * Note: do not change the position of any fields in 0x0e00-0x0f00
403 __u64 ipib; /* 0x0e00 */
404 __u32 ipib_checksum; /* 0x0e08 */
405 __u8 pad_0x0e0c[0x11b8-0x0e0c]; /* 0x0e0c */
407 /* 64 bit extparam used for pfault/diag 250: defined by architecture */
408 __u64 ext_params2; /* 0x11B8 */
409 __u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */
411 /* CPU register save area: defined by architecture */
412 __u64 floating_pt_save_area[16]; /* 0x1200 */
413 __u64 gpregs_save_area[16]; /* 0x1280 */
414 __u32 st_status_fixed_logout[4]; /* 0x1300 */
415 __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */
416 __u32 prefixreg_save_area; /* 0x1318 */
417 __u32 fpt_creg_save_area; /* 0x131c */
418 __u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */
419 __u32 tod_progreg_save_area; /* 0x1324 */
420 __u32 cpu_timer_save_area[2]; /* 0x1328 */
421 __u32 clock_comp_save_area[2]; /* 0x1330 */
422 __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */
423 __u32 access_regs_save_area[16]; /* 0x1340 */
424 __u64 cregs_save_area[16]; /* 0x1380 */
426 /* align to the top of the prefix area */
427 __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */
428 #endif /* !__s390x__ */
429 } __attribute__((packed)); /* End structure*/
431 #define S390_lowcore (*((struct _lowcore *) 0))
432 extern struct _lowcore *lowcore_ptr[];
434 static inline void set_prefix(__u32 address)
436 asm volatile("spx %0" : : "m" (address) : "memory");
439 static inline __u32 store_prefix(void)
443 asm volatile("stpx %0" : "=m" (address));