Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Heiko Carstens | a53c8fa | 2012-07-20 11:15:04 +0200 | [diff] [blame] | 2 | * Copyright IBM Corp. 1999, 2012 |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 3 | * Author(s): Hartmut Penner <hp@de.ibm.com>, |
| 4 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, |
| 5 | * Denis Joseph Barrow, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #ifndef _ASM_S390_LOWCORE_H |
| 9 | #define _ASM_S390_LOWCORE_H |
| 10 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/types.h> |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 12 | #include <asm/ptrace.h> |
| 13 | #include <asm/cpu.h> |
Michael Holzheu | a62bc07 | 2014-10-06 17:57:43 +0200 | [diff] [blame] | 14 | #include <asm/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 16 | #define LC_ORDER 1 |
| 17 | #define LC_PAGES 2 |
| 18 | |
Heiko Carstens | c667aea | 2015-12-31 10:29:00 +0100 | [diff] [blame] | 19 | struct lowcore { |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 20 | __u8 pad_0x0000[0x0014-0x0000]; /* 0x0000 */ |
| 21 | __u32 ipl_parmblock_ptr; /* 0x0014 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 22 | __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */ |
| 23 | __u32 ext_params; /* 0x0080 */ |
Martin Schwidefsky | 7e180bd | 2012-03-11 11:59:25 -0400 | [diff] [blame] | 24 | __u16 ext_cpu_addr; /* 0x0084 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 25 | __u16 ext_int_code; /* 0x0086 */ |
| 26 | __u16 svc_ilc; /* 0x0088 */ |
| 27 | __u16 svc_code; /* 0x008a */ |
| 28 | __u16 pgm_ilc; /* 0x008c */ |
| 29 | __u16 pgm_code; /* 0x008e */ |
| 30 | __u32 data_exc_code; /* 0x0090 */ |
| 31 | __u16 mon_class_num; /* 0x0094 */ |
Jens Freimann | 21ee7ff | 2014-02-26 16:32:46 +0100 | [diff] [blame] | 32 | __u8 per_code; /* 0x0096 */ |
| 33 | __u8 per_atmid; /* 0x0097 */ |
Martin Schwidefsky | 94038a9 | 2010-05-17 10:00:00 +0200 | [diff] [blame] | 34 | __u64 per_address; /* 0x0098 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 35 | __u8 exc_access_id; /* 0x00a0 */ |
| 36 | __u8 per_access_id; /* 0x00a1 */ |
| 37 | __u8 op_access_id; /* 0x00a2 */ |
Jens Freimann | 3d53b46 | 2014-02-10 10:55:37 +0100 | [diff] [blame] | 38 | __u8 ar_mode_id; /* 0x00a3 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 39 | __u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */ |
Martin Schwidefsky | 94038a9 | 2010-05-17 10:00:00 +0200 | [diff] [blame] | 40 | __u64 trans_exc_code; /* 0x00a8 */ |
| 41 | __u64 monitor_code; /* 0x00b0 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 42 | __u16 subchannel_id; /* 0x00b8 */ |
| 43 | __u16 subchannel_nr; /* 0x00ba */ |
| 44 | __u32 io_int_parm; /* 0x00bc */ |
| 45 | __u32 io_int_word; /* 0x00c0 */ |
| 46 | __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ |
| 47 | __u32 stfl_fac_list; /* 0x00c8 */ |
| 48 | __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */ |
Heiko Carstens | 004f0bb | 2015-10-06 14:45:35 +0200 | [diff] [blame] | 49 | __u64 mcck_interruption_code; /* 0x00e8 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 50 | __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ |
| 51 | __u32 external_damage_code; /* 0x00f4 */ |
Martin Schwidefsky | 94038a9 | 2010-05-17 10:00:00 +0200 | [diff] [blame] | 52 | __u64 failing_storage_address; /* 0x00f8 */ |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 53 | __u8 pad_0x0100[0x0110-0x0100]; /* 0x0100 */ |
| 54 | __u64 breaking_event_addr; /* 0x0110 */ |
| 55 | __u8 pad_0x0118[0x0120-0x0118]; /* 0x0118 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 56 | psw_t restart_old_psw; /* 0x0120 */ |
| 57 | psw_t external_old_psw; /* 0x0130 */ |
| 58 | psw_t svc_old_psw; /* 0x0140 */ |
| 59 | psw_t program_old_psw; /* 0x0150 */ |
| 60 | psw_t mcck_old_psw; /* 0x0160 */ |
| 61 | psw_t io_old_psw; /* 0x0170 */ |
| 62 | __u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */ |
| 63 | psw_t restart_psw; /* 0x01a0 */ |
| 64 | psw_t external_new_psw; /* 0x01b0 */ |
| 65 | psw_t svc_new_psw; /* 0x01c0 */ |
| 66 | psw_t program_new_psw; /* 0x01d0 */ |
| 67 | psw_t mcck_new_psw; /* 0x01e0 */ |
| 68 | psw_t io_new_psw; /* 0x01f0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Martin Schwidefsky | c532890 | 2011-12-27 11:27:15 +0100 | [diff] [blame] | 70 | /* Save areas. */ |
| 71 | __u64 save_area_sync[8]; /* 0x0200 */ |
| 72 | __u64 save_area_async[8]; /* 0x0240 */ |
| 73 | __u64 save_area_restart[1]; /* 0x0280 */ |
Martin Schwidefsky | d3a73ac | 2014-04-15 12:55:07 +0200 | [diff] [blame] | 74 | |
| 75 | /* CPU flags. */ |
| 76 | __u64 cpu_flags; /* 0x0288 */ |
Martin Schwidefsky | c532890 | 2011-12-27 11:27:15 +0100 | [diff] [blame] | 77 | |
| 78 | /* Return psws. */ |
| 79 | psw_t return_psw; /* 0x0290 */ |
| 80 | psw_t return_mcck_psw; /* 0x02a0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 82 | /* CPU accounting and timing values. */ |
Martin Schwidefsky | c532890 | 2011-12-27 11:27:15 +0100 | [diff] [blame] | 83 | __u64 sync_enter_timer; /* 0x02b0 */ |
| 84 | __u64 async_enter_timer; /* 0x02b8 */ |
| 85 | __u64 mcck_enter_timer; /* 0x02c0 */ |
| 86 | __u64 exit_timer; /* 0x02c8 */ |
| 87 | __u64 user_timer; /* 0x02d0 */ |
| 88 | __u64 system_timer; /* 0x02d8 */ |
| 89 | __u64 steal_timer; /* 0x02e0 */ |
| 90 | __u64 last_update_timer; /* 0x02e8 */ |
| 91 | __u64 last_update_clock; /* 0x02f0 */ |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 92 | __u64 int_clock; /* 0x02f8 */ |
| 93 | __u64 mcck_clock; /* 0x0300 */ |
| 94 | __u64 clock_comparator; /* 0x0308 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 95 | |
| 96 | /* Current process. */ |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 97 | __u64 current_task; /* 0x0310 */ |
| 98 | __u64 thread_info; /* 0x0318 */ |
| 99 | __u64 kernel_stack; /* 0x0320 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 100 | |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 101 | /* Interrupt, panic and restart stack. */ |
| 102 | __u64 async_stack; /* 0x0328 */ |
| 103 | __u64 panic_stack; /* 0x0330 */ |
| 104 | __u64 restart_stack; /* 0x0338 */ |
| 105 | |
| 106 | /* Restart function and parameter. */ |
| 107 | __u64 restart_fn; /* 0x0340 */ |
| 108 | __u64 restart_data; /* 0x0348 */ |
| 109 | __u64 restart_source; /* 0x0350 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 110 | |
| 111 | /* Address space pointer. */ |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 112 | __u64 kernel_asce; /* 0x0358 */ |
| 113 | __u64 user_asce; /* 0x0360 */ |
Christian Borntraeger | e22cf8c | 2015-10-06 18:06:15 +0200 | [diff] [blame] | 114 | |
| 115 | /* |
| 116 | * The lpp and current_pid fields form a |
| 117 | * 64-bit value that is set as program |
| 118 | * parameter with the LPP instruction. |
| 119 | */ |
| 120 | __u32 lpp; /* 0x0368 */ |
| 121 | __u32 current_pid; /* 0x036c */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 122 | |
| 123 | /* SMP info area */ |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 124 | __u32 cpu_nr; /* 0x0370 */ |
| 125 | __u32 softirq_pending; /* 0x0374 */ |
| 126 | __u64 percpu_offset; /* 0x0378 */ |
| 127 | __u64 vdso_per_cpu_data; /* 0x0380 */ |
| 128 | __u64 machine_flags; /* 0x0388 */ |
Heiko Carstens | c933146 | 2014-10-15 12:17:38 +0200 | [diff] [blame] | 129 | __u8 pad_0x0390[0x0398-0x0390]; /* 0x0390 */ |
Martin Schwidefsky | 8b646bd | 2012-03-11 11:59:26 -0400 | [diff] [blame] | 130 | __u64 gmap; /* 0x0398 */ |
Philipp Hachtmann | 6c8cd5b | 2014-04-07 18:25:23 +0200 | [diff] [blame] | 131 | __u32 spinlock_lockval; /* 0x03a0 */ |
Martin Schwidefsky | 7f79695 | 2016-08-22 12:06:21 +0200 | [diff] [blame] | 132 | __u32 fpu_flags; /* 0x03a4 */ |
| 133 | __u8 pad_0x03a8[0x0400-0x03a8]; /* 0x03a8 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 134 | |
Martin Schwidefsky | c742b31 | 2008-12-31 15:11:42 +0100 | [diff] [blame] | 135 | /* Per cpu primary space access list */ |
Martin Schwidefsky | 63aef00 | 2014-05-27 14:40:39 +0200 | [diff] [blame] | 136 | __u32 paste[16]; /* 0x0400 */ |
Martin Schwidefsky | c742b31 | 2008-12-31 15:11:42 +0100 | [diff] [blame] | 137 | |
Martin Schwidefsky | 63aef00 | 2014-05-27 14:40:39 +0200 | [diff] [blame] | 138 | __u8 pad_0x04c0[0x0e00-0x0440]; /* 0x0440 */ |
Christian Borntraeger | 8a88ac6 | 2008-03-25 18:47:15 +0100 | [diff] [blame] | 139 | |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 140 | /* |
| 141 | * 0xe00 contains the address of the IPL Parameter Information |
| 142 | * block. Dump tools need IPIB for IPL after dump. |
| 143 | * Note: do not change the position of any fields in 0x0e00-0x0f00 |
| 144 | */ |
| 145 | __u64 ipib; /* 0x0e00 */ |
| 146 | __u32 ipib_checksum; /* 0x0e08 */ |
Heiko Carstens | fbe7656 | 2012-06-05 09:59:52 +0200 | [diff] [blame] | 147 | __u64 vmcore_info; /* 0x0e0c */ |
Michael Holzheu | 4857d4b | 2012-03-11 11:59:34 -0400 | [diff] [blame] | 148 | __u8 pad_0x0e14[0x0e18-0x0e14]; /* 0x0e14 */ |
| 149 | __u64 os_info; /* 0x0e18 */ |
| 150 | __u8 pad_0x0e20[0x0f00-0x0e20]; /* 0x0e20 */ |
Martin Schwidefsky | 14375bc | 2010-10-25 16:10:51 +0200 | [diff] [blame] | 151 | |
| 152 | /* Extended facility list */ |
| 153 | __u64 stfle_fac_list[32]; /* 0x0f00 */ |
Martin Schwidefsky | 8070361 | 2014-10-06 17:53:53 +0200 | [diff] [blame] | 154 | __u8 pad_0x1000[0x11b0-0x1000]; /* 0x1000 */ |
| 155 | |
| 156 | /* Pointer to vector register save area */ |
| 157 | __u64 vector_save_area_addr; /* 0x11b0 */ |
Christian Borntraeger | 8a88ac6 | 2008-03-25 18:47:15 +0100 | [diff] [blame] | 158 | |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 159 | /* 64 bit extparam used for pfault/diag 250: defined by architecture */ |
| 160 | __u64 ext_params2; /* 0x11B8 */ |
| 161 | __u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 163 | /* CPU register save area: defined by architecture */ |
| 164 | __u64 floating_pt_save_area[16]; /* 0x1200 */ |
| 165 | __u64 gpregs_save_area[16]; /* 0x1280 */ |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 166 | psw_t psw_save_area; /* 0x1300 */ |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 167 | __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */ |
| 168 | __u32 prefixreg_save_area; /* 0x1318 */ |
| 169 | __u32 fpt_creg_save_area; /* 0x131c */ |
| 170 | __u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */ |
| 171 | __u32 tod_progreg_save_area; /* 0x1324 */ |
| 172 | __u32 cpu_timer_save_area[2]; /* 0x1328 */ |
| 173 | __u32 clock_comp_save_area[2]; /* 0x1330 */ |
| 174 | __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */ |
| 175 | __u32 access_regs_save_area[16]; /* 0x1340 */ |
| 176 | __u64 cregs_save_area[16]; /* 0x1380 */ |
Martin Schwidefsky | d35339a | 2012-07-31 11:03:04 +0200 | [diff] [blame] | 177 | __u8 pad_0x1400[0x1800-0x1400]; /* 0x1400 */ |
| 178 | |
| 179 | /* Transaction abort diagnostic block */ |
| 180 | __u8 pgm_tdb[256]; /* 0x1800 */ |
Martin Schwidefsky | 8070361 | 2014-10-06 17:53:53 +0200 | [diff] [blame] | 181 | __u8 pad_0x1900[0x1c00-0x1900]; /* 0x1900 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Martin Schwidefsky | 8070361 | 2014-10-06 17:53:53 +0200 | [diff] [blame] | 183 | /* Software defined save area for vector registers */ |
| 184 | __u8 vector_save_area[1024]; /* 0x1c00 */ |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 185 | } __packed; |
| 186 | |
Heiko Carstens | c667aea | 2015-12-31 10:29:00 +0100 | [diff] [blame] | 187 | #define S390_lowcore (*((struct lowcore *) 0)) |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 188 | |
Heiko Carstens | c667aea | 2015-12-31 10:29:00 +0100 | [diff] [blame] | 189 | extern struct lowcore *lowcore_ptr[]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
Adrian Bunk | 4448aaf | 2005-11-08 21:34:42 -0800 | [diff] [blame] | 191 | static inline void set_prefix(__u32 address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 193 | asm volatile("spx %0" : : "m" (address) : "memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | } |
| 195 | |
Heiko Carstens | 15e9b58 | 2006-12-04 15:40:26 +0100 | [diff] [blame] | 196 | static inline __u32 store_prefix(void) |
| 197 | { |
| 198 | __u32 address; |
| 199 | |
| 200 | asm volatile("stpx %0" : "=m" (address)); |
| 201 | return address; |
| 202 | } |
| 203 | |
Heiko Carstens | cbb870c | 2010-02-26 22:37:43 +0100 | [diff] [blame] | 204 | #endif /* _ASM_S390_LOWCORE_H */ |