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authorHeiko Carstens <heiko.carstens@de.ibm.com>2010-02-26 16:37:43 -0500
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-02-26 16:37:31 -0500
commitcbb870c8221147ae337612e04b2bb0211f31a74b (patch)
treeaa0c80fde4a271d8a366afc76912c5dacdb7542a /arch/s390/include/asm
parentd96221ab1e7d86dc0d4666466979117cd1915386 (diff)
[S390] Cleanup struct _lowcore usage and defines.
Use asm offsets to make sure the offset defines to struct _lowcore and its layout don't get out of sync. Also add a BUILD_BUG_ON() which checks that the size of the structure is sane. And while being at it change those sites which use odd casts to access the current lowcore. These should use S390_lowcore instead. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
-rw-r--r--arch/s390/include/asm/lowcore.h241
-rw-r--r--arch/s390/include/asm/setup.h6
-rw-r--r--arch/s390/include/asm/thread_info.h2
3 files changed, 59 insertions, 190 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index a9eb6834d921..05527c040b7a 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -1,144 +1,16 @@
1/* 1/*
2 * include/asm-s390/lowcore.h 2 * Copyright IBM Corp. 1999,2010
3 * 3 * Author(s): Hartmut Penner <hp@de.ibm.com>,
4 * S390 version 4 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation 5 * Denis Joseph Barrow,
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)
9 */ 6 */
10 7
11#ifndef _ASM_S390_LOWCORE_H 8#ifndef _ASM_S390_LOWCORE_H
12#define _ASM_S390_LOWCORE_H 9#define _ASM_S390_LOWCORE_H
13 10
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
18
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
23
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
28
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_STFL_FAC_LIST 0x00c8
34#define __LC_MCCK_CODE 0x00e8
35
36#define __LC_DUMP_REIPL 0x0e00
37
38#ifndef __s390x__
39#define __LC_RST_NEW_PSW 0x0000
40#define __LC_RST_OLD_PSW 0x0008
41#define __LC_EXT_OLD_PSW 0x0018
42#define __LC_SVC_OLD_PSW 0x0020
43#define __LC_PGM_OLD_PSW 0x0028
44#define __LC_MCK_OLD_PSW 0x0030
45#define __LC_IO_OLD_PSW 0x0038
46#define __LC_EXT_NEW_PSW 0x0058
47#define __LC_SVC_NEW_PSW 0x0060
48#define __LC_PGM_NEW_PSW 0x0068
49#define __LC_MCK_NEW_PSW 0x0070
50#define __LC_IO_NEW_PSW 0x0078
51#define __LC_SAVE_AREA 0x0200
52#define __LC_RETURN_PSW 0x0240
53#define __LC_RETURN_MCCK_PSW 0x0248
54#define __LC_SYNC_ENTER_TIMER 0x0250
55#define __LC_ASYNC_ENTER_TIMER 0x0258
56#define __LC_EXIT_TIMER 0x0260
57#define __LC_USER_TIMER 0x0268
58#define __LC_SYSTEM_TIMER 0x0270
59#define __LC_STEAL_TIMER 0x0278
60#define __LC_LAST_UPDATE_TIMER 0x0280
61#define __LC_LAST_UPDATE_CLOCK 0x0288
62#define __LC_CURRENT 0x0290
63#define __LC_THREAD_INFO 0x0294
64#define __LC_KERNEL_STACK 0x0298
65#define __LC_ASYNC_STACK 0x029c
66#define __LC_PANIC_STACK 0x02a0
67#define __LC_KERNEL_ASCE 0x02a4
68#define __LC_USER_ASCE 0x02a8
69#define __LC_USER_EXEC_ASCE 0x02ac
70#define __LC_CPUID 0x02b0
71#define __LC_INT_CLOCK 0x02c8
72#define __LC_MACHINE_FLAGS 0x02d8
73#define __LC_FTRACE_FUNC 0x02dc
74#define __LC_IRB 0x0300
75#define __LC_PFAULT_INTPARM 0x0080
76#define __LC_CPU_TIMER_SAVE_AREA 0x00d8
77#define __LC_CLOCK_COMP_SAVE_AREA 0x00e0
78#define __LC_PSW_SAVE_AREA 0x0100
79#define __LC_PREFIX_SAVE_AREA 0x0108
80#define __LC_AREGS_SAVE_AREA 0x0120
81#define __LC_FPREGS_SAVE_AREA 0x0160
82#define __LC_GPREGS_SAVE_AREA 0x0180
83#define __LC_CREGS_SAVE_AREA 0x01c0
84#else /* __s390x__ */
85#define __LC_LAST_BREAK 0x0110
86#define __LC_RST_OLD_PSW 0x0120
87#define __LC_EXT_OLD_PSW 0x0130
88#define __LC_SVC_OLD_PSW 0x0140
89#define __LC_PGM_OLD_PSW 0x0150
90#define __LC_MCK_OLD_PSW 0x0160
91#define __LC_IO_OLD_PSW 0x0170
92#define __LC_RST_NEW_PSW 0x01a0
93#define __LC_EXT_NEW_PSW 0x01b0
94#define __LC_SVC_NEW_PSW 0x01c0
95#define __LC_PGM_NEW_PSW 0x01d0
96#define __LC_MCK_NEW_PSW 0x01e0
97#define __LC_IO_NEW_PSW 0x01f0
98#define __LC_SAVE_AREA 0x0200
99#define __LC_RETURN_PSW 0x0280
100#define __LC_RETURN_MCCK_PSW 0x0290
101#define __LC_SYNC_ENTER_TIMER 0x02a0
102#define __LC_ASYNC_ENTER_TIMER 0x02a8
103#define __LC_EXIT_TIMER 0x02b0
104#define __LC_USER_TIMER 0x02b8
105#define __LC_SYSTEM_TIMER 0x02c0
106#define __LC_STEAL_TIMER 0x02c8
107#define __LC_LAST_UPDATE_TIMER 0x02d0
108#define __LC_LAST_UPDATE_CLOCK 0x02d8
109#define __LC_CURRENT 0x02e0
110#define __LC_THREAD_INFO 0x02e8
111#define __LC_KERNEL_STACK 0x02f0
112#define __LC_ASYNC_STACK 0x02f8
113#define __LC_PANIC_STACK 0x0300
114#define __LC_KERNEL_ASCE 0x0308
115#define __LC_USER_ASCE 0x0310
116#define __LC_USER_EXEC_ASCE 0x0318
117#define __LC_CPUID 0x0320
118#define __LC_INT_CLOCK 0x0340
119#define __LC_VDSO_PER_CPU 0x0350
120#define __LC_MACHINE_FLAGS 0x0358
121#define __LC_FTRACE_FUNC 0x0360
122#define __LC_IRB 0x0380
123#define __LC_PASTE 0x03c0
124#define __LC_PFAULT_INTPARM 0x11b8
125#define __LC_FPREGS_SAVE_AREA 0x1200
126#define __LC_GPREGS_SAVE_AREA 0x1280
127#define __LC_PSW_SAVE_AREA 0x1300
128#define __LC_PREFIX_SAVE_AREA 0x1318
129#define __LC_FP_CREG_SAVE_AREA 0x131c
130#define __LC_TODREG_SAVE_AREA 0x1324
131#define __LC_CPU_TIMER_SAVE_AREA 0x1328
132#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
133#define __LC_AREGS_SAVE_AREA 0x1340
134#define __LC_CREGS_SAVE_AREA 0x1380
135#endif /* __s390x__ */
136
137#ifndef __ASSEMBLY__
138
139#include <asm/cpu.h>
140#include <asm/ptrace.h>
141#include <linux/types.h> 11#include <linux/types.h>
12#include <asm/ptrace.h>
13#include <asm/cpu.h>
142 14
143void restart_int_handler(void); 15void restart_int_handler(void);
144void ext_int_handler(void); 16void ext_int_handler(void);
@@ -149,6 +21,9 @@ void io_int_handler(void);
149 21
150#ifdef CONFIG_32BIT 22#ifdef CONFIG_32BIT
151 23
24#define LC_ORDER 0
25#define LC_PAGES 1
26
152struct save_area { 27struct save_area {
153 u32 ext_save; 28 u32 ext_save;
154 u64 timer; 29 u64 timer;
@@ -161,46 +36,13 @@ struct save_area {
161 u64 fp_regs[4]; 36 u64 fp_regs[4];
162 u32 gp_regs[16]; 37 u32 gp_regs[16];
163 u32 ctrl_regs[16]; 38 u32 ctrl_regs[16];
164} __attribute__((packed)); 39} __packed;
165
166#define SAVE_AREA_BASE offsetof(struct _lowcore, extended_save_area_addr)
167
168#else /* CONFIG_32BIT */
169
170struct save_area {
171 u64 fp_regs[16];
172 u64 gp_regs[16];
173 u8 psw[16];
174 u8 pad1[8];
175 u32 pref_reg;
176 u32 fp_ctrl_reg;
177 u8 pad2[4];
178 u32 tod_reg;
179 u64 timer;
180 u64 clk_cmp;
181 u8 pad3[8];
182 u32 acc_regs[16];
183 u64 ctrl_regs[16];
184} __attribute__((packed));
185 40
186#define SAVE_AREA_BASE offsetof(struct _lowcore, floating_pt_save_area) 41struct _lowcore {
187
188#endif /* CONFIG_32BIT */
189
190#ifndef __s390x__
191#define LC_ORDER 0
192#else
193#define LC_ORDER 1
194#endif
195
196#define LC_PAGES (1UL << LC_ORDER)
197
198struct _lowcore
199{
200#ifndef __s390x__
201 /* 0x0000 - 0x01ff: defined by architecture */
202 psw_t restart_psw; /* 0x0000 */ 42 psw_t restart_psw; /* 0x0000 */
203 __u32 ccw2[4]; /* 0x0008 */ 43 psw_t restart_old_psw; /* 0x0008 */
44 __u8 pad_0x0010[0x0014-0x0010]; /* 0x0010 */
45 __u32 ipl_parmblock_ptr; /* 0x0014 */
204 psw_t external_old_psw; /* 0x0018 */ 46 psw_t external_old_psw; /* 0x0018 */
205 psw_t svc_old_psw; /* 0x0020 */ 47 psw_t svc_old_psw; /* 0x0020 */
206 psw_t program_old_psw; /* 0x0028 */ 48 psw_t program_old_psw; /* 0x0028 */
@@ -226,7 +68,9 @@ struct _lowcore
226 __u32 monitor_code; /* 0x009c */ 68 __u32 monitor_code; /* 0x009c */
227 __u8 exc_access_id; /* 0x00a0 */ 69 __u8 exc_access_id; /* 0x00a0 */
228 __u8 per_access_id; /* 0x00a1 */ 70 __u8 per_access_id; /* 0x00a1 */
229 __u8 pad_0x00a2[0x00b8-0x00a2]; /* 0x00a2 */ 71 __u8 op_access_id; /* 0x00a2 */
72 __u8 ar_access_id; /* 0x00a3 */
73 __u8 pad_0x00a4[0x00b8-0x00a4]; /* 0x00a4 */
230 __u16 subchannel_id; /* 0x00b8 */ 74 __u16 subchannel_id; /* 0x00b8 */
231 __u16 subchannel_nr; /* 0x00ba */ 75 __u16 subchannel_nr; /* 0x00ba */
232 __u32 io_int_parm; /* 0x00bc */ 76 __u32 io_int_parm; /* 0x00bc */
@@ -242,8 +86,9 @@ struct _lowcore
242 __u32 external_damage_code; /* 0x00f4 */ 86 __u32 external_damage_code; /* 0x00f4 */
243 __u32 failing_storage_address; /* 0x00f8 */ 87 __u32 failing_storage_address; /* 0x00f8 */
244 __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */ 88 __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */
245 __u32 st_status_fixed_logout[4]; /* 0x0100 */ 89 psw_t psw_save_area; /* 0x0100 */
246 __u8 pad_0x0110[0x0120-0x0110]; /* 0x0110 */ 90 __u32 prefixreg_save_area; /* 0x0108 */
91 __u8 pad_0x010c[0x0120-0x010c]; /* 0x010c */
247 92
248 /* CPU register save area: defined by architecture */ 93 /* CPU register save area: defined by architecture */
249 __u32 access_regs_save_area[16]; /* 0x0120 */ 94 __u32 access_regs_save_area[16]; /* 0x0120 */
@@ -307,10 +152,32 @@ struct _lowcore
307 152
308 /* Align to the top 1k of prefix area */ 153 /* Align to the top 1k of prefix area */
309 __u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */ 154 __u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */
310#else /* !__s390x__ */ 155} __packed;
311 /* 0x0000 - 0x01ff: defined by architecture */ 156
312 __u32 ccw1[2]; /* 0x0000 */ 157#else /* CONFIG_32BIT */
313 __u32 ccw2[4]; /* 0x0008 */ 158
159#define LC_ORDER 1
160#define LC_PAGES 2
161
162struct save_area {
163 u64 fp_regs[16];
164 u64 gp_regs[16];
165 u8 psw[16];
166 u8 pad1[8];
167 u32 pref_reg;
168 u32 fp_ctrl_reg;
169 u8 pad2[4];
170 u32 tod_reg;
171 u64 timer;
172 u64 clk_cmp;
173 u8 pad3[8];
174 u32 acc_regs[16];
175 u64 ctrl_regs[16];
176} __packed;
177
178struct _lowcore {
179 __u8 pad_0x0000[0x0014-0x0000]; /* 0x0000 */
180 __u32 ipl_parmblock_ptr; /* 0x0014 */
314 __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */ 181 __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */
315 __u32 ext_params; /* 0x0080 */ 182 __u32 ext_params; /* 0x0080 */
316 __u16 cpu_addr; /* 0x0084 */ 183 __u16 cpu_addr; /* 0x0084 */
@@ -341,7 +208,9 @@ struct _lowcore
341 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ 208 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
342 __u32 external_damage_code; /* 0x00f4 */ 209 __u32 external_damage_code; /* 0x00f4 */
343 addr_t failing_storage_address; /* 0x00f8 */ 210 addr_t failing_storage_address; /* 0x00f8 */
344 __u8 pad_0x0100[0x0120-0x0100]; /* 0x0100 */ 211 __u8 pad_0x0100[0x0110-0x0100]; /* 0x0100 */
212 __u64 breaking_event_addr; /* 0x0110 */
213 __u8 pad_0x0118[0x0120-0x0118]; /* 0x0118 */
345 psw_t restart_old_psw; /* 0x0120 */ 214 psw_t restart_old_psw; /* 0x0120 */
346 psw_t external_old_psw; /* 0x0130 */ 215 psw_t external_old_psw; /* 0x0130 */
347 psw_t svc_old_psw; /* 0x0140 */ 216 psw_t svc_old_psw; /* 0x0140 */
@@ -422,7 +291,7 @@ struct _lowcore
422 /* CPU register save area: defined by architecture */ 291 /* CPU register save area: defined by architecture */
423 __u64 floating_pt_save_area[16]; /* 0x1200 */ 292 __u64 floating_pt_save_area[16]; /* 0x1200 */
424 __u64 gpregs_save_area[16]; /* 0x1280 */ 293 __u64 gpregs_save_area[16]; /* 0x1280 */
425 __u32 st_status_fixed_logout[4]; /* 0x1300 */ 294 psw_t psw_save_area; /* 0x1300 */
426 __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */ 295 __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */
427 __u32 prefixreg_save_area; /* 0x1318 */ 296 __u32 prefixreg_save_area; /* 0x1318 */
428 __u32 fpt_creg_save_area; /* 0x131c */ 297 __u32 fpt_creg_save_area; /* 0x131c */
@@ -436,10 +305,12 @@ struct _lowcore
436 305
437 /* align to the top of the prefix area */ 306 /* align to the top of the prefix area */
438 __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */ 307 __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */
439#endif /* !__s390x__ */ 308} __packed;
440} __attribute__((packed)); /* End structure*/ 309
310#endif /* CONFIG_32BIT */
441 311
442#define S390_lowcore (*((struct _lowcore *) 0)) 312#define S390_lowcore (*((struct _lowcore *) 0))
313
443extern struct _lowcore *lowcore_ptr[]; 314extern struct _lowcore *lowcore_ptr[];
444 315
445static inline void set_prefix(__u32 address) 316static inline void set_prefix(__u32 address)
@@ -455,6 +326,4 @@ static inline __u32 store_prefix(void)
455 return address; 326 return address;
456} 327}
457 328
458#endif 329#endif /* _ASM_S390_LOWCORE_H */
459
460#endif
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 76f530b65f00..9ab6bd3a65d1 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -14,14 +14,14 @@
14 14
15#ifdef __KERNEL__ 15#ifdef __KERNEL__
16 16
17#include <asm/lowcore.h>
18#include <asm/types.h>
19
20#define PARMAREA 0x10400 17#define PARMAREA 0x10400
21#define MEMORY_CHUNKS 256 18#define MEMORY_CHUNKS 256
22 19
23#ifndef __ASSEMBLY__ 20#ifndef __ASSEMBLY__
24 21
22#include <asm/lowcore.h>
23#include <asm/types.h>
24
25#ifndef __s390x__ 25#ifndef __s390x__
26#define IPL_DEVICE (*(unsigned long *) (0x10404)) 26#define IPL_DEVICE (*(unsigned long *) (0x10404))
27#define INITRD_START (*(unsigned long *) (0x1040C)) 27#define INITRD_START (*(unsigned long *) (0x1040C))
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index 66069e736842..34f0873d6525 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -73,7 +73,7 @@ struct thread_info {
73/* how to get the thread information struct from C */ 73/* how to get the thread information struct from C */
74static inline struct thread_info *current_thread_info(void) 74static inline struct thread_info *current_thread_info(void)
75{ 75{
76 return (struct thread_info *)((*(unsigned long *) __LC_KERNEL_STACK)-THREAD_SIZE); 76 return (struct thread_info *)(S390_lowcore.kernel_stack - THREAD_SIZE);
77} 77}
78 78
79#define THREAD_SIZE_ORDER THREAD_ORDER 79#define THREAD_SIZE_ORDER THREAD_ORDER
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 12:35:29 -0500