include/asm-s390/lowcore.h

   1 /*
   2  *  include/asm-s390/lowcore.h
   3  *
   4  *  S390 version
   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)
   9  */
  10
  11 #ifndef _ASM_S390_LOWCORE_H
  12 #define _ASM_S390_LOWCORE_H
  13
  14 #ifndef __s390x__
  15 #define __LC_EXT_OLD_PSW                0x018
  16 #define __LC_SVC_OLD_PSW                0x020
  17 #define __LC_PGM_OLD_PSW                0x028
  18 #define __LC_MCK_OLD_PSW                0x030
  19 #define __LC_IO_OLD_PSW                 0x038
  20 #define __LC_EXT_NEW_PSW                0x058
  21 #define __LC_SVC_NEW_PSW                0x060
  22 #define __LC_PGM_NEW_PSW                0x068
  23 #define __LC_MCK_NEW_PSW                0x070
  24 #define __LC_IO_NEW_PSW                 0x078
  25 #else /* !__s390x__ */
  26 #define __LC_EXT_OLD_PSW                0x0130
  27 #define __LC_SVC_OLD_PSW                0x0140
  28 #define __LC_PGM_OLD_PSW                0x0150
  29 #define __LC_MCK_OLD_PSW                0x0160
  30 #define __LC_IO_OLD_PSW                 0x0170
  31 #define __LC_EXT_NEW_PSW                0x01b0
  32 #define __LC_SVC_NEW_PSW                0x01c0
  33 #define __LC_PGM_NEW_PSW                0x01d0
  34 #define __LC_MCK_NEW_PSW                0x01e0
  35 #define __LC_IO_NEW_PSW                 0x01f0
  36 #endif /* !__s390x__ */
  37
  38 #define __LC_EXT_PARAMS                 0x080
  39 #define __LC_CPU_ADDRESS                0x084
  40 #define __LC_EXT_INT_CODE               0x086
  41
  42 #define __LC_SVC_ILC                    0x088
  43 #define __LC_SVC_INT_CODE               0x08A
  44 #define __LC_PGM_ILC                    0x08C
  45 #define __LC_PGM_INT_CODE               0x08E
  46
  47 #define __LC_PER_ATMID                  0x096
  48 #define __LC_PER_ADDRESS                0x098
  49 #define __LC_PER_ACCESS_ID              0x0A1
  50
  51 #define __LC_SUBCHANNEL_ID              0x0B8
  52 #define __LC_SUBCHANNEL_NR              0x0BA
  53 #define __LC_IO_INT_PARM                0x0BC
  54 #define __LC_IO_INT_WORD                0x0C0
  55 #define __LC_MCCK_CODE                  0x0E8
  56
  57 #define __LC_RETURN_PSW                 0x200
  58
  59 #define __LC_IRB                        0x210
  60
  61 #define __LC_DIAG44_OPCODE              0x250
  62
  63 #define __LC_SAVE_AREA                  0xC00
  64
  65 #ifndef __s390x__
  66 #define __LC_KERNEL_STACK               0xC40
  67 #define __LC_THREAD_INFO                0xC44
  68 #define __LC_ASYNC_STACK                0xC48
  69 #define __LC_KERNEL_ASCE                0xC4C
  70 #define __LC_USER_ASCE                  0xC50
  71 #define __LC_CPUID                      0xC60
  72 #define __LC_CPUADDR                    0xC68
  73 #define __LC_IPLDEV                     0xC7C
  74 #define __LC_JIFFY_TIMER                0xC80
  75 #define __LC_CURRENT                    0xC90
  76 #define __LC_INT_CLOCK                  0xC98
  77 #else /* __s390x__ */
  78 #define __LC_KERNEL_STACK               0xD40
  79 #define __LC_THREAD_INFO                0xD48
  80 #define __LC_ASYNC_STACK                0xD50
  81 #define __LC_KERNEL_ASCE                0xD58
  82 #define __LC_USER_ASCE                  0xD60
  83 #define __LC_CPUID                      0xD90
  84 #define __LC_CPUADDR                    0xD98
  85 #define __LC_IPLDEV                     0xDB8
  86 #define __LC_JIFFY_TIMER                0xDC0
  87 #define __LC_CURRENT                    0xDD8
  88 #define __LC_INT_CLOCK                  0xDe8
  89 #endif /* __s390x__ */
  90
  91 #define __LC_PANIC_MAGIC                0xE00
  92
  93 #ifndef __s390x__
  94 #define __LC_PFAULT_INTPARM             0x080
  95 #define __LC_AREGS_SAVE_AREA            0x120
  96 #define __LC_CREGS_SAVE_AREA            0x1C0
  97 #else /* __s390x__ */
  98 #define __LC_PFAULT_INTPARM             0x11B8
  99 #define __LC_AREGS_SAVE_AREA            0x1340
 100 #define __LC_CREGS_SAVE_AREA            0x1380
 101 #endif /* __s390x__ */
 102
 103 #ifndef __ASSEMBLY__
 104
 105 #include <linux/config.h>
 106 #include <asm/processor.h>
 107 #include <linux/types.h>
 108 #include <asm/sigp.h>
 109
 110 void restart_int_handler(void);
 111 void ext_int_handler(void);
 112 void system_call(void);
 113 void pgm_check_handler(void);
 114 void mcck_int_handler(void);
 115 void io_int_handler(void);
 116
 117 struct _lowcore
 118 {
 119 #ifndef __s390x__
 120         /* prefix area: defined by architecture */
 121         psw_t        restart_psw;              /* 0x000 */
 122         __u32        ccw2[4];                  /* 0x008 */
 123         psw_t        external_old_psw;         /* 0x018 */
 124         psw_t        svc_old_psw;              /* 0x020 */
 125         psw_t        program_old_psw;          /* 0x028 */
 126         psw_t        mcck_old_psw;             /* 0x030 */
 127         psw_t        io_old_psw;               /* 0x038 */
 128         __u8         pad1[0x58-0x40];          /* 0x040 */
 129         psw_t        external_new_psw;         /* 0x058 */
 130         psw_t        svc_new_psw;              /* 0x060 */
 131         psw_t        program_new_psw;          /* 0x068 */
 132         psw_t        mcck_new_psw;             /* 0x070 */
 133         psw_t        io_new_psw;               /* 0x078 */
 134         __u32        ext_params;               /* 0x080 */
 135         __u16        cpu_addr;                 /* 0x084 */
 136         __u16        ext_int_code;             /* 0x086 */
 137         __u16        svc_ilc;                  /* 0x088 */
 138         __u16        svc_code;                 /* 0x08a */
 139         __u16        pgm_ilc;                  /* 0x08c */
 140         __u16        pgm_code;                 /* 0x08e */
 141         __u32        trans_exc_code;           /* 0x090 */
 142         __u16        mon_class_num;            /* 0x094 */
 143         __u16        per_perc_atmid;           /* 0x096 */
 144         __u32        per_address;              /* 0x098 */
 145         __u32        monitor_code;             /* 0x09c */
 146         __u8         exc_access_id;            /* 0x0a0 */
 147         __u8         per_access_id;            /* 0x0a1 */
 148         __u8         pad2[0xB8-0xA2];          /* 0x0a2 */
 149         __u16        subchannel_id;            /* 0x0b8 */
 150         __u16        subchannel_nr;            /* 0x0ba */
 151         __u32        io_int_parm;              /* 0x0bc */
 152         __u32        io_int_word;              /* 0x0c0 */
 153         __u8         pad3[0xD8-0xC4];          /* 0x0c4 */
 154         __u32        cpu_timer_save_area[2];   /* 0x0d8 */
 155         __u32        clock_comp_save_area[2];  /* 0x0e0 */
 156         __u32        mcck_interruption_code[2]; /* 0x0e8 */
 157         __u8         pad4[0xf4-0xf0];          /* 0x0f0 */
 158         __u32        external_damage_code;     /* 0x0f4 */
 159         __u32        failing_storage_address;  /* 0x0f8 */
 160         __u8         pad5[0x100-0xfc];         /* 0x0fc */
 161         __u32        st_status_fixed_logout[4];/* 0x100 */
 162         __u8         pad6[0x120-0x110];        /* 0x110 */
 163         __u32        access_regs_save_area[16];/* 0x120 */
 164         __u32        floating_pt_save_area[8]; /* 0x160 */
 165         __u32        gpregs_save_area[16];     /* 0x180 */
 166         __u32        cregs_save_area[16];      /* 0x1c0 */
 167
 168         psw_t        return_psw;               /* 0x200 */
 169         __u8         irb[64];                  /* 0x208 */
 170         __u8         pad8[0xc00-0x248];        /* 0x248 */
 171
 172         /* System info area */
 173         __u32        save_area[16];            /* 0xc00 */
 174         __u32        kernel_stack;             /* 0xc40 */
 175         __u32        thread_info;              /* 0xc44 */
 176         __u32        async_stack;              /* 0xc48 */
 177         __u32        kernel_asce;              /* 0xc4c */
 178         __u32        user_asce;                /* 0xc50 */
 179         __u8         pad10[0xc60-0xc54];       /* 0xc54 */
 180         /* entry.S sensitive area start */
 181         struct       cpuinfo_S390 cpu_data;    /* 0xc60 */
 182         __u32        ipl_device;               /* 0xc7c */
 183         /* entry.S sensitive area end */
 184
 185         /* SMP info area: defined by DJB */
 186         __u64        jiffy_timer;              /* 0xc80 */
 187         __u32        ext_call_fast;            /* 0xc88 */
 188         __u32        percpu_offset;            /* 0xc8c */
 189         __u32        current_task;             /* 0xc90 */
 190         __u32        softirq_pending;          /* 0xc94 */
 191         __u64        int_clock;                /* 0xc98 */
 192         __u8         pad11[0xe00-0xca0];       /* 0xca0 */
 193
 194         /* 0xe00 is used as indicator for dump tools */
 195         /* whether the kernel died with panic() or not */
 196         __u32        panic_magic;              /* 0xe00 */
 197
 198         /* Align to the top 1k of prefix area */
 199         __u8         pad12[0x1000-0xe04];      /* 0xe04 */
 200 #else /* !__s390x__ */
 201         /* prefix area: defined by architecture */
 202         __u32        ccw1[2];                  /* 0x000 */
 203         __u32        ccw2[4];                  /* 0x008 */
 204         __u8         pad1[0x80-0x18];          /* 0x018 */
 205         __u32        ext_params;               /* 0x080 */
 206         __u16        cpu_addr;                 /* 0x084 */
 207         __u16        ext_int_code;             /* 0x086 */
 208         __u16        svc_ilc;                  /* 0x088 */
 209         __u16        svc_code;                 /* 0x08a */
 210         __u16        pgm_ilc;                  /* 0x08c */
 211         __u16        pgm_code;                 /* 0x08e */
 212         __u32        data_exc_code;            /* 0x090 */
 213         __u16        mon_class_num;            /* 0x094 */
 214         __u16        per_perc_atmid;           /* 0x096 */
 215         addr_t       per_address;              /* 0x098 */
 216         __u8         exc_access_id;            /* 0x0a0 */
 217         __u8         per_access_id;            /* 0x0a1 */
 218         __u8         op_access_id;             /* 0x0a2 */
 219         __u8         ar_access_id;             /* 0x0a3 */
 220         __u8         pad2[0xA8-0xA4];          /* 0x0a4 */
 221         addr_t       trans_exc_code;           /* 0x0A0 */
 222         addr_t       monitor_code;             /* 0x09c */
 223         __u16        subchannel_id;            /* 0x0b8 */
 224         __u16        subchannel_nr;            /* 0x0ba */
 225         __u32        io_int_parm;              /* 0x0bc */
 226         __u32        io_int_word;              /* 0x0c0 */
 227         __u8         pad3[0xc8-0xc4];          /* 0x0c4 */
 228         __u32        stfl_fac_list;            /* 0x0c8 */
 229         __u8         pad4[0xe8-0xcc];          /* 0x0cc */
 230         __u32        mcck_interruption_code[2]; /* 0x0e8 */
 231         __u8         pad5[0xf4-0xf0];          /* 0x0f0 */
 232         __u32        external_damage_code;     /* 0x0f4 */
 233         addr_t       failing_storage_address;  /* 0x0f8 */
 234         __u8         pad6[0x120-0x100];        /* 0x100 */
 235         psw_t        restart_old_psw;          /* 0x120 */
 236         psw_t        external_old_psw;         /* 0x130 */
 237         psw_t        svc_old_psw;              /* 0x140 */
 238         psw_t        program_old_psw;          /* 0x150 */
 239         psw_t        mcck_old_psw;             /* 0x160 */
 240         psw_t        io_old_psw;               /* 0x170 */
 241         __u8         pad7[0x1a0-0x180];        /* 0x180 */
 242         psw_t        restart_psw;              /* 0x1a0 */
 243         psw_t        external_new_psw;         /* 0x1b0 */
 244         psw_t        svc_new_psw;              /* 0x1c0 */
 245         psw_t        program_new_psw;          /* 0x1d0 */
 246         psw_t        mcck_new_psw;             /* 0x1e0 */
 247         psw_t        io_new_psw;               /* 0x1f0 */
 248         psw_t        return_psw;               /* 0x200 */
 249         __u8         irb[64];                  /* 0x210 */
 250         __u32        diag44_opcode;            /* 0x250 */
 251         __u8         pad8[0xc00-0x254];        /* 0x254 */
 252         /* System info area */
 253         __u64        save_area[16];            /* 0xc00 */
 254         __u8         pad9[0xd40-0xc80];        /* 0xc80 */
 255         __u64        kernel_stack;             /* 0xd40 */
 256         __u64        thread_info;              /* 0xd48 */
 257         __u64        async_stack;              /* 0xd50 */
 258         __u64        kernel_asce;              /* 0xd58 */
 259         __u64        user_asce;                /* 0xd60 */
 260         __u8         pad10[0xd80-0xd68];       /* 0xd68 */
 261         /* entry.S sensitive area start */
 262         struct       cpuinfo_S390 cpu_data;    /* 0xd80 */
 263         __u32        ipl_device;               /* 0xdb8 */
 264         __u32        pad11;                    /* 0xdbc */
 265         /* entry.S sensitive area end */
 266
 267         /* SMP info area: defined by DJB */
 268         __u64        jiffy_timer;              /* 0xdc0 */
 269         __u64        ext_call_fast;            /* 0xdc8 */
 270         __u64        percpu_offset;            /* 0xdd0 */
 271         __u64        current_task;             /* 0xdd8 */
 272         __u64        softirq_pending;          /* 0xde0 */
 273         __u64        int_clock;                /* 0xde8 */
 274         __u8         pad12[0xe00-0xdf0];       /* 0xdf0 */
 275
 276         /* 0xe00 is used as indicator for dump tools */
 277         /* whether the kernel died with panic() or not */
 278         __u32        panic_magic;              /* 0xe00 */
 279
 280         __u8         pad13[0x1200-0xe04];      /* 0xe04 */
 281
 282         /* System info area */
 283
 284         __u64        floating_pt_save_area[16]; /* 0x1200 */
 285         __u64        gpregs_save_area[16];      /* 0x1280 */
 286         __u32        st_status_fixed_logout[4]; /* 0x1300 */
 287         __u8         pad14[0x1318-0x1310];      /* 0x1310 */
 288         __u32        prefixreg_save_area;       /* 0x1318 */
 289         __u32        fpt_creg_save_area;        /* 0x131c */
 290         __u8         pad15[0x1324-0x1320];      /* 0x1320 */
 291         __u32        tod_progreg_save_area;     /* 0x1324 */
 292         __u32        cpu_timer_save_area[2];    /* 0x1328 */
 293         __u32        clock_comp_save_area[2];   /* 0x1330 */
 294         __u8         pad16[0x1340-0x1338];      /* 0x1338 */
 295         __u32        access_regs_save_area[16]; /* 0x1340 */
 296         __u64        cregs_save_area[16];       /* 0x1380 */
 297
 298         /* align to the top of the prefix area */
 299
 300         __u8         pad17[0x2000-0x1400];      /* 0x1400 */
 301 #endif /* !__s390x__ */
 302 } __attribute__((packed)); /* End structure*/
 303
 304 #define S390_lowcore (*((struct _lowcore *) 0))
 305 extern struct _lowcore *lowcore_ptr[];
 306
 307 extern __inline__ void set_prefix(__u32 address)
 308 {
 309         __asm__ __volatile__ ("spx %0" : : "m" (address) : "memory" );
 310 }
 311
 312 #define __PANIC_MAGIC           0xDEADC0DE
 313
 314 #endif
 315
 316 #endif