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   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_IPL_PARMBLOCK_PTR          0x014
  39 #define __LC_EXT_PARAMS                 0x080
  40 #define __LC_CPU_ADDRESS                0x084
  41 #define __LC_EXT_INT_CODE               0x086
  42
  43 #define __LC_SVC_ILC                    0x088
  44 #define __LC_SVC_INT_CODE               0x08A
  45 #define __LC_PGM_ILC                    0x08C
  46 #define __LC_PGM_INT_CODE               0x08E
  47
  48 #define __LC_PER_ATMID                  0x096
  49 #define __LC_PER_ADDRESS                0x098
  50 #define __LC_PER_ACCESS_ID              0x0A1
  51 #define __LC_AR_MODE_ID                 0x0A3
  52
  53 #define __LC_SUBCHANNEL_ID              0x0B8
  54 #define __LC_SUBCHANNEL_NR              0x0BA
  55 #define __LC_IO_INT_PARM                0x0BC
  56 #define __LC_IO_INT_WORD                0x0C0
  57 #define __LC_MCCK_CODE                  0x0E8
  58
  59 #define __LC_LAST_BREAK                 0x110
  60
  61 #define __LC_RETURN_PSW                 0x200
  62
  63 #define __LC_SAVE_AREA                  0xC00
  64
  65 #ifndef __s390x__
  66 #define __LC_IRB                        0x208
  67 #define __LC_SYNC_ENTER_TIMER           0x248
  68 #define __LC_ASYNC_ENTER_TIMER          0x250
  69 #define __LC_EXIT_TIMER                 0x258
  70 #define __LC_USER_TIMER                 0x260
  71 #define __LC_SYSTEM_TIMER               0x268
  72 #define __LC_STEAL_TIMER                0x270
  73 #define __LC_LAST_UPDATE_TIMER          0x278
  74 #define __LC_LAST_UPDATE_CLOCK          0x280
  75 #define __LC_RETURN_MCCK_PSW            0x288
  76 #define __LC_KERNEL_STACK               0xC40
  77 #define __LC_THREAD_INFO                0xC44
  78 #define __LC_ASYNC_STACK                0xC48
  79 #define __LC_KERNEL_ASCE                0xC4C
  80 #define __LC_USER_ASCE                  0xC50
  81 #define __LC_PANIC_STACK                0xC54
  82 #define __LC_CPUID                      0xC60
  83 #define __LC_CPUADDR                    0xC68
  84 #define __LC_IPLDEV                     0xC7C
  85 #define __LC_CURRENT                    0xC90
  86 #define __LC_INT_CLOCK                  0xC98
  87 #else /* __s390x__ */
  88 #define __LC_IRB                        0x210
  89 #define __LC_SYNC_ENTER_TIMER           0x250
  90 #define __LC_ASYNC_ENTER_TIMER          0x258
  91 #define __LC_EXIT_TIMER                 0x260
  92 #define __LC_USER_TIMER                 0x268
  93 #define __LC_SYSTEM_TIMER               0x270
  94 #define __LC_STEAL_TIMER                0x278
  95 #define __LC_LAST_UPDATE_TIMER          0x280
  96 #define __LC_LAST_UPDATE_CLOCK          0x288
  97 #define __LC_RETURN_MCCK_PSW            0x290
  98 #define __LC_KERNEL_STACK               0xD40
  99 #define __LC_THREAD_INFO                0xD48
 100 #define __LC_ASYNC_STACK                0xD50
 101 #define __LC_KERNEL_ASCE                0xD58
 102 #define __LC_USER_ASCE                  0xD60
 103 #define __LC_PANIC_STACK                0xD68
 104 #define __LC_CPUID                      0xD80
 105 #define __LC_CPUADDR                    0xD88
 106 #define __LC_IPLDEV                     0xDB8
 107 #define __LC_CURRENT                    0xDD8
 108 #define __LC_INT_CLOCK                  0xDE8
 109 #define __LC_VDSO_PER_CPU               0xE38
 110 #endif /* __s390x__ */
 111
 112 #define __LC_PASTE                      0xE40
 113
 114 #define __LC_PANIC_MAGIC                0xE00
 115 #ifndef __s390x__
 116 #define __LC_PFAULT_INTPARM             0x080
 117 #define __LC_CPU_TIMER_SAVE_AREA        0x0D8
 118 #define __LC_CLOCK_COMP_SAVE_AREA       0x0E0
 119 #define __LC_PSW_SAVE_AREA              0x100
 120 #define __LC_PREFIX_SAVE_AREA           0x108
 121 #define __LC_AREGS_SAVE_AREA            0x120
 122 #define __LC_FPREGS_SAVE_AREA           0x160
 123 #define __LC_GPREGS_SAVE_AREA           0x180
 124 #define __LC_CREGS_SAVE_AREA            0x1C0
 125 #else /* __s390x__ */
 126 #define __LC_PFAULT_INTPARM             0x11B8
 127 #define __LC_FPREGS_SAVE_AREA           0x1200
 128 #define __LC_GPREGS_SAVE_AREA           0x1280
 129 #define __LC_PSW_SAVE_AREA              0x1300
 130 #define __LC_PREFIX_SAVE_AREA           0x1318
 131 #define __LC_FP_CREG_SAVE_AREA          0x131C
 132 #define __LC_TODREG_SAVE_AREA           0x1324
 133 #define __LC_CPU_TIMER_SAVE_AREA        0x1328
 134 #define __LC_CLOCK_COMP_SAVE_AREA       0x1331
 135 #define __LC_AREGS_SAVE_AREA            0x1340
 136 #define __LC_CREGS_SAVE_AREA            0x1380
 137 #endif /* __s390x__ */
 138
 139 #ifndef __ASSEMBLY__
 140
 141 #include <asm/processor.h>
 142 #include <linux/types.h>
 143 #include <asm/sigp.h>
 144
 145 void restart_int_handler(void);
 146 void ext_int_handler(void);
 147 void system_call(void);
 148 void pgm_check_handler(void);
 149 void mcck_int_handler(void);
 150 void io_int_handler(void);
 151
 152 struct save_area_s390 {
 153         u32     ext_save;
 154         u64     timer;
 155         u64     clk_cmp;
 156         u8      pad1[24];
 157         u8      psw[8];
 158         u32     pref_reg;
 159         u8      pad2[20];
 160         u32     acc_regs[16];
 161         u64     fp_regs[4];
 162         u32     gp_regs[16];
 163         u32     ctrl_regs[16];
 164 }  __attribute__((packed));
 165
 166 struct save_area_s390x {
 167         u64     fp_regs[16];
 168         u64     gp_regs[16];
 169         u8      psw[16];
 170         u8      pad1[8];
 171         u32     pref_reg;
 172         u32     fp_ctrl_reg;
 173         u8      pad2[4];
 174         u32     tod_reg;
 175         u64     timer;
 176         u64     clk_cmp;
 177         u8      pad3[8];
 178         u32     acc_regs[16];
 179         u64     ctrl_regs[16];
 180 }  __attribute__((packed));
 181
 182 union save_area {
 183         struct save_area_s390   s390;
 184         struct save_area_s390x  s390x;
 185 };
 186
 187 #define SAVE_AREA_BASE_S390     0xd4
 188 #define SAVE_AREA_BASE_S390X    0x1200
 189
 190 #ifndef __s390x__
 191 #define SAVE_AREA_SIZE sizeof(struct save_area_s390)
 192 #define SAVE_AREA_BASE SAVE_AREA_BASE_S390
 193 #else
 194 #define SAVE_AREA_SIZE sizeof(struct save_area_s390x)
 195 #define SAVE_AREA_BASE SAVE_AREA_BASE_S390X
 196 #endif
 197
 198 struct _lowcore
 199 {
 200 #ifndef __s390x__
 201         /* prefix area: defined by architecture */
 202         psw_t        restart_psw;              /* 0x000 */
 203         __u32        ccw2[4];                  /* 0x008 */
 204         psw_t        external_old_psw;         /* 0x018 */
 205         psw_t        svc_old_psw;              /* 0x020 */
 206         psw_t        program_old_psw;          /* 0x028 */
 207         psw_t        mcck_old_psw;             /* 0x030 */
 208         psw_t        io_old_psw;               /* 0x038 */
 209         __u8         pad1[0x58-0x40];          /* 0x040 */
 210         psw_t        external_new_psw;         /* 0x058 */
 211         psw_t        svc_new_psw;              /* 0x060 */
 212         psw_t        program_new_psw;          /* 0x068 */
 213         psw_t        mcck_new_psw;             /* 0x070 */
 214         psw_t        io_new_psw;               /* 0x078 */
 215         __u32        ext_params;               /* 0x080 */
 216         __u16        cpu_addr;                 /* 0x084 */
 217         __u16        ext_int_code;             /* 0x086 */
 218         __u16        svc_ilc;                  /* 0x088 */
 219         __u16        svc_code;                 /* 0x08a */
 220         __u16        pgm_ilc;                  /* 0x08c */
 221         __u16        pgm_code;                 /* 0x08e */
 222         __u32        trans_exc_code;           /* 0x090 */
 223         __u16        mon_class_num;            /* 0x094 */
 224         __u16        per_perc_atmid;           /* 0x096 */
 225         __u32        per_address;              /* 0x098 */
 226         __u32        monitor_code;             /* 0x09c */
 227         __u8         exc_access_id;            /* 0x0a0 */
 228         __u8         per_access_id;            /* 0x0a1 */
 229         __u8         pad2[0xB8-0xA2];          /* 0x0a2 */
 230         __u16        subchannel_id;            /* 0x0b8 */
 231         __u16        subchannel_nr;            /* 0x0ba */
 232         __u32        io_int_parm;              /* 0x0bc */
 233         __u32        io_int_word;              /* 0x0c0 */
 234         __u8         pad3[0xc8-0xc4];          /* 0x0c4 */
 235         __u32        stfl_fac_list;            /* 0x0c8 */
 236         __u8         pad4[0xd4-0xcc];          /* 0x0cc */
 237         __u32        extended_save_area_addr;  /* 0x0d4 */
 238         __u32        cpu_timer_save_area[2];   /* 0x0d8 */
 239         __u32        clock_comp_save_area[2];  /* 0x0e0 */
 240         __u32        mcck_interruption_code[2]; /* 0x0e8 */
 241         __u8         pad5[0xf4-0xf0];          /* 0x0f0 */
 242         __u32        external_damage_code;     /* 0x0f4 */
 243         __u32        failing_storage_address;  /* 0x0f8 */
 244         __u8         pad6[0x100-0xfc];         /* 0x0fc */
 245         __u32        st_status_fixed_logout[4];/* 0x100 */
 246         __u8         pad7[0x120-0x110];        /* 0x110 */
 247         __u32        access_regs_save_area[16];/* 0x120 */
 248         __u32        floating_pt_save_area[8]; /* 0x160 */
 249         __u32        gpregs_save_area[16];     /* 0x180 */
 250         __u32        cregs_save_area[16];      /* 0x1c0 */
 251
 252         psw_t        return_psw;               /* 0x200 */
 253         __u8         irb[64];                  /* 0x208 */
 254         __u64        sync_enter_timer;         /* 0x248 */
 255         __u64        async_enter_timer;        /* 0x250 */
 256         __u64        exit_timer;               /* 0x258 */
 257         __u64        user_timer;               /* 0x260 */
 258         __u64        system_timer;             /* 0x268 */
 259         __u64        steal_timer;              /* 0x270 */
 260         __u64        last_update_timer;        /* 0x278 */
 261         __u64        last_update_clock;        /* 0x280 */
 262         psw_t        return_mcck_psw;          /* 0x288 */
 263         __u8         pad8[0xc00-0x290];        /* 0x290 */
 264
 265         /* System info area */
 266         __u32        save_area[16];            /* 0xc00 */
 267         __u32        kernel_stack;             /* 0xc40 */
 268         __u32        thread_info;              /* 0xc44 */
 269         __u32        async_stack;              /* 0xc48 */
 270         __u32        kernel_asce;              /* 0xc4c */
 271         __u32        user_asce;                /* 0xc50 */
 272         __u32        panic_stack;              /* 0xc54 */
 273         __u32        user_exec_asce;           /* 0xc58 */
 274         __u8         pad10[0xc60-0xc5c];       /* 0xc5c */
 275         /* entry.S sensitive area start */
 276         struct       cpuinfo_S390 cpu_data;    /* 0xc60 */
 277         __u32        ipl_device;               /* 0xc7c */
 278         /* entry.S sensitive area end */
 279
 280         /* SMP info area: defined by DJB */
 281         __u64        clock_comparator;         /* 0xc80 */
 282         __u32        ext_call_fast;            /* 0xc88 */
 283         __u32        percpu_offset;            /* 0xc8c */
 284         __u32        current_task;             /* 0xc90 */
 285         __u32        softirq_pending;          /* 0xc94 */
 286         __u64        int_clock;                /* 0xc98 */
 287         __u8         pad11[0xe00-0xca0];       /* 0xca0 */
 288
 289         /* 0xe00 is used as indicator for dump tools */
 290         /* whether the kernel died with panic() or not */
 291         __u32        panic_magic;              /* 0xe00 */
 292
 293         /* Align to the top 1k of prefix area */
 294         __u8         pad12[0x1000-0xe04];      /* 0xe04 */
 295 #else /* !__s390x__ */
 296         /* prefix area: defined by architecture */
 297         __u32        ccw1[2];                  /* 0x000 */
 298         __u32        ccw2[4];                  /* 0x008 */
 299         __u8         pad1[0x80-0x18];          /* 0x018 */
 300         __u32        ext_params;               /* 0x080 */
 301         __u16        cpu_addr;                 /* 0x084 */
 302         __u16        ext_int_code;             /* 0x086 */
 303         __u16        svc_ilc;                  /* 0x088 */
 304         __u16        svc_code;                 /* 0x08a */
 305         __u16        pgm_ilc;                  /* 0x08c */
 306         __u16        pgm_code;                 /* 0x08e */
 307         __u32        data_exc_code;            /* 0x090 */
 308         __u16        mon_class_num;            /* 0x094 */
 309         __u16        per_perc_atmid;           /* 0x096 */
 310         addr_t       per_address;              /* 0x098 */
 311         __u8         exc_access_id;            /* 0x0a0 */
 312         __u8         per_access_id;            /* 0x0a1 */
 313         __u8         op_access_id;             /* 0x0a2 */
 314         __u8         ar_access_id;             /* 0x0a3 */
 315         __u8         pad2[0xA8-0xA4];          /* 0x0a4 */
 316         addr_t       trans_exc_code;           /* 0x0A0 */
 317         addr_t       monitor_code;             /* 0x09c */
 318         __u16        subchannel_id;            /* 0x0b8 */
 319         __u16        subchannel_nr;            /* 0x0ba */
 320         __u32        io_int_parm;              /* 0x0bc */
 321         __u32        io_int_word;              /* 0x0c0 */
 322         __u8         pad3[0xc8-0xc4];          /* 0x0c4 */
 323         __u32        stfl_fac_list;            /* 0x0c8 */
 324         __u8         pad4[0xe8-0xcc];          /* 0x0cc */
 325         __u32        mcck_interruption_code[2]; /* 0x0e8 */
 326         __u8         pad5[0xf4-0xf0];          /* 0x0f0 */
 327         __u32        external_damage_code;     /* 0x0f4 */
 328         addr_t       failing_storage_address;  /* 0x0f8 */
 329         __u8         pad6[0x120-0x100];        /* 0x100 */
 330         psw_t        restart_old_psw;          /* 0x120 */
 331         psw_t        external_old_psw;         /* 0x130 */
 332         psw_t        svc_old_psw;              /* 0x140 */
 333         psw_t        program_old_psw;          /* 0x150 */
 334         psw_t        mcck_old_psw;             /* 0x160 */
 335         psw_t        io_old_psw;               /* 0x170 */
 336         __u8         pad7[0x1a0-0x180];        /* 0x180 */
 337         psw_t        restart_psw;              /* 0x1a0 */
 338         psw_t        external_new_psw;         /* 0x1b0 */
 339         psw_t        svc_new_psw;              /* 0x1c0 */
 340         psw_t        program_new_psw;          /* 0x1d0 */
 341         psw_t        mcck_new_psw;             /* 0x1e0 */
 342         psw_t        io_new_psw;               /* 0x1f0 */
 343         psw_t        return_psw;               /* 0x200 */
 344         __u8         irb[64];                  /* 0x210 */
 345         __u64        sync_enter_timer;         /* 0x250 */
 346         __u64        async_enter_timer;        /* 0x258 */
 347         __u64        exit_timer;               /* 0x260 */
 348         __u64        user_timer;               /* 0x268 */
 349         __u64        system_timer;             /* 0x270 */
 350         __u64        steal_timer;              /* 0x278 */
 351         __u64        last_update_timer;        /* 0x280 */
 352         __u64        last_update_clock;        /* 0x288 */
 353         psw_t        return_mcck_psw;          /* 0x290 */
 354         __u8         pad8[0xc00-0x2a0];        /* 0x2a0 */
 355         /* System info area */
 356         __u64        save_area[16];            /* 0xc00 */
 357         __u8         pad9[0xd40-0xc80];        /* 0xc80 */
 358         __u64        kernel_stack;             /* 0xd40 */
 359         __u64        thread_info;              /* 0xd48 */
 360         __u64        async_stack;              /* 0xd50 */
 361         __u64        kernel_asce;              /* 0xd58 */
 362         __u64        user_asce;                /* 0xd60 */
 363         __u64        panic_stack;              /* 0xd68 */
 364         __u64        user_exec_asce;           /* 0xd70 */
 365         __u8         pad10[0xd80-0xd78];       /* 0xd78 */
 366         /* entry.S sensitive area start */
 367         struct       cpuinfo_S390 cpu_data;    /* 0xd80 */
 368         __u32        ipl_device;               /* 0xdb8 */
 369         __u32        pad11;                    /* 0xdbc */
 370         /* entry.S sensitive area end */
 371
 372         /* SMP info area: defined by DJB */
 373         __u64        clock_comparator;         /* 0xdc0 */
 374         __u64        ext_call_fast;            /* 0xdc8 */
 375         __u64        percpu_offset;            /* 0xdd0 */
 376         __u64        current_task;             /* 0xdd8 */
 377         __u32        softirq_pending;          /* 0xde0 */
 378         __u32        pad_0x0de4;               /* 0xde4 */
 379         __u64        int_clock;                /* 0xde8 */
 380         __u8         pad12[0xe00-0xdf0];       /* 0xdf0 */
 381
 382         /* 0xe00 is used as indicator for dump tools */
 383         /* whether the kernel died with panic() or not */
 384         __u32        panic_magic;              /* 0xe00 */
 385
 386         /* Per cpu primary space access list */
 387         __u8         pad_0xe04[0xe38-0xe04];   /* 0xe04 */
 388         __u64        vdso_per_cpu_data;        /* 0xe38 */
 389         __u32        paste[16];                /* 0xe40 */
 390
 391         __u8         pad13[0x11b8-0xe80];      /* 0xe80 */
 392
 393         /* 64 bit extparam used for pfault, diag 250 etc  */
 394         __u64        ext_params2;               /* 0x11B8 */
 395
 396         __u8         pad14[0x1200-0x11C0];      /* 0x11C0 */
 397
 398         /* System info area */
 399
 400         __u64        floating_pt_save_area[16]; /* 0x1200 */
 401         __u64        gpregs_save_area[16];      /* 0x1280 */
 402         __u32        st_status_fixed_logout[4]; /* 0x1300 */
 403         __u8         pad15[0x1318-0x1310];      /* 0x1310 */
 404         __u32        prefixreg_save_area;       /* 0x1318 */
 405         __u32        fpt_creg_save_area;        /* 0x131c */
 406         __u8         pad16[0x1324-0x1320];      /* 0x1320 */
 407         __u32        tod_progreg_save_area;     /* 0x1324 */
 408         __u32        cpu_timer_save_area[2];    /* 0x1328 */
 409         __u32        clock_comp_save_area[2];   /* 0x1330 */
 410         __u8         pad17[0x1340-0x1338];      /* 0x1338 */
 411         __u32        access_regs_save_area[16]; /* 0x1340 */
 412         __u64        cregs_save_area[16];       /* 0x1380 */
 413
 414         /* align to the top of the prefix area */
 415
 416         __u8         pad18[0x2000-0x1400];      /* 0x1400 */
 417 #endif /* !__s390x__ */
 418 } __attribute__((packed)); /* End structure*/
 419
 420 #define S390_lowcore (*((struct _lowcore *) 0))
 421 extern struct _lowcore *lowcore_ptr[];
 422
 423 static inline void set_prefix(__u32 address)
 424 {
 425         asm volatile("spx %0" : : "m" (address) : "memory");
 426 }
 427
 428 static inline __u32 store_prefix(void)
 429 {
 430         __u32 address;
 431
 432         asm volatile("stpx %0" : "=m" (address));
 433         return address;
 434 }
 435
 436 #define __PANIC_MAGIC           0xDEADC0DE
 437
 438 #endif
 439
 440 #endif