[deliverable/linux.git] / arch / s390 / include / asm / lowcore.h

/*
 *  include/asm-s390/lowcore.h
 *
 *  S390 version
 *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
 *    Author(s): Hartmut Penner (hp@de.ibm.com),
 *               Martin Schwidefsky (schwidefsky@de.ibm.com),
 *               Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
 */

#ifndef _ASM_S390_LOWCORE_H
#define _ASM_S390_LOWCORE_H

#ifndef __s390x__
#define __LC_EXT_OLD_PSW                0x018
#define __LC_SVC_OLD_PSW                0x020
#define __LC_PGM_OLD_PSW                0x028
#define __LC_MCK_OLD_PSW                0x030
#define __LC_IO_OLD_PSW                 0x038
#define __LC_EXT_NEW_PSW                0x058
#define __LC_SVC_NEW_PSW                0x060
#define __LC_PGM_NEW_PSW                0x068
#define __LC_MCK_NEW_PSW                0x070
#define __LC_IO_NEW_PSW                 0x078
#else /* !__s390x__ */
#define __LC_EXT_OLD_PSW                0x0130
#define __LC_SVC_OLD_PSW                0x0140
#define __LC_PGM_OLD_PSW                0x0150
#define __LC_MCK_OLD_PSW                0x0160
#define __LC_IO_OLD_PSW                 0x0170
#define __LC_EXT_NEW_PSW                0x01b0
#define __LC_SVC_NEW_PSW                0x01c0
#define __LC_PGM_NEW_PSW                0x01d0
#define __LC_MCK_NEW_PSW                0x01e0
#define __LC_IO_NEW_PSW                 0x01f0
#endif /* !__s390x__ */

#define __LC_IPL_PARMBLOCK_PTR		0x014
#define __LC_EXT_PARAMS                 0x080
#define __LC_CPU_ADDRESS                0x084
#define __LC_EXT_INT_CODE               0x086

#define __LC_SVC_ILC                    0x088
#define __LC_SVC_INT_CODE               0x08A
#define __LC_PGM_ILC                    0x08C
#define __LC_PGM_INT_CODE               0x08E

#define __LC_PER_ATMID			0x096
#define __LC_PER_ADDRESS		0x098
#define __LC_PER_ACCESS_ID		0x0A1
#define __LC_AR_MODE_ID			0x0A3

#define __LC_SUBCHANNEL_ID              0x0B8
#define __LC_SUBCHANNEL_NR              0x0BA
#define __LC_IO_INT_PARM                0x0BC
#define __LC_IO_INT_WORD                0x0C0
#define __LC_MCCK_CODE                  0x0E8

#define __LC_LAST_BREAK 		0x110

#define __LC_RETURN_PSW                 0x200

#define __LC_SAVE_AREA                  0xC00

#ifndef __s390x__
#define __LC_IRB			0x208
#define __LC_SYNC_ENTER_TIMER		0x248
#define __LC_ASYNC_ENTER_TIMER		0x250
#define __LC_EXIT_TIMER			0x258
#define __LC_USER_TIMER			0x260
#define __LC_SYSTEM_TIMER		0x268
#define __LC_STEAL_TIMER		0x270
#define __LC_LAST_UPDATE_TIMER		0x278
#define __LC_LAST_UPDATE_CLOCK		0x280
#define __LC_RETURN_MCCK_PSW            0x288
#define __LC_KERNEL_STACK               0xC40
#define __LC_THREAD_INFO		0xC44
#define __LC_ASYNC_STACK                0xC48
#define __LC_KERNEL_ASCE		0xC4C
#define __LC_USER_ASCE			0xC50
#define __LC_PANIC_STACK                0xC54
#define __LC_CPUID                      0xC60
#define __LC_CPUADDR                    0xC68
#define __LC_IPLDEV                     0xC7C
#define __LC_CURRENT			0xC90
#define __LC_INT_CLOCK			0xC98
#else /* __s390x__ */
#define __LC_IRB			0x210
#define __LC_SYNC_ENTER_TIMER		0x250
#define __LC_ASYNC_ENTER_TIMER		0x258
#define __LC_EXIT_TIMER			0x260
#define __LC_USER_TIMER			0x268
#define __LC_SYSTEM_TIMER		0x270
#define __LC_STEAL_TIMER		0x278
#define __LC_LAST_UPDATE_TIMER		0x280
#define __LC_LAST_UPDATE_CLOCK		0x288
#define __LC_RETURN_MCCK_PSW            0x290
#define __LC_KERNEL_STACK               0xD40
#define __LC_THREAD_INFO		0xD48
#define __LC_ASYNC_STACK                0xD50
#define __LC_KERNEL_ASCE		0xD58
#define __LC_USER_ASCE			0xD60
#define __LC_PANIC_STACK                0xD68
#define __LC_CPUID			0xD80
#define __LC_CPUADDR			0xD88
#define __LC_IPLDEV                     0xDB8
#define __LC_CURRENT			0xDD8
#define __LC_INT_CLOCK			0xDE8
#define __LC_VDSO_PER_CPU		0xE38
#endif /* __s390x__ */

#define __LC_PASTE			0xE40

#define __LC_PANIC_MAGIC		0xE00
#ifndef __s390x__
#define __LC_PFAULT_INTPARM             0x080
#define __LC_CPU_TIMER_SAVE_AREA        0x0D8
#define __LC_CLOCK_COMP_SAVE_AREA	0x0E0
#define __LC_PSW_SAVE_AREA		0x100
#define __LC_PREFIX_SAVE_AREA		0x108
#define __LC_AREGS_SAVE_AREA            0x120
#define __LC_FPREGS_SAVE_AREA		0x160
#define __LC_GPREGS_SAVE_AREA           0x180
#define __LC_CREGS_SAVE_AREA            0x1C0
#else /* __s390x__ */
#define __LC_PFAULT_INTPARM             0x11B8
#define __LC_FPREGS_SAVE_AREA		0x1200
#define __LC_GPREGS_SAVE_AREA           0x1280
#define __LC_PSW_SAVE_AREA		0x1300
#define __LC_PREFIX_SAVE_AREA		0x1318
#define __LC_FP_CREG_SAVE_AREA		0x131C
#define __LC_TODREG_SAVE_AREA		0x1324
#define __LC_CPU_TIMER_SAVE_AREA        0x1328
#define __LC_CLOCK_COMP_SAVE_AREA	0x1331
#define __LC_AREGS_SAVE_AREA            0x1340
#define __LC_CREGS_SAVE_AREA            0x1380
#endif /* __s390x__ */

#ifndef __ASSEMBLY__

#include <asm/processor.h>
#include <linux/types.h>
#include <asm/sigp.h>

void restart_int_handler(void);
void ext_int_handler(void);
void system_call(void);
void pgm_check_handler(void);
void mcck_int_handler(void);
void io_int_handler(void);

struct save_area_s390 {
	u32	ext_save;
	u64	timer;
	u64	clk_cmp;
	u8	pad1[24];
	u8	psw[8];
	u32	pref_reg;
	u8	pad2[20];
	u32	acc_regs[16];
	u64	fp_regs[4];
	u32	gp_regs[16];
	u32	ctrl_regs[16];
}  __attribute__((packed));

struct save_area_s390x {
	u64	fp_regs[16];
	u64	gp_regs[16];
	u8	psw[16];
	u8	pad1[8];
	u32	pref_reg;
	u32	fp_ctrl_reg;
	u8	pad2[4];
	u32	tod_reg;
	u64	timer;
	u64	clk_cmp;
	u8	pad3[8];
	u32	acc_regs[16];
	u64	ctrl_regs[16];
}  __attribute__((packed));

union save_area {
	struct save_area_s390	s390;
	struct save_area_s390x	s390x;
};

#define SAVE_AREA_BASE_S390	0xd4
#define SAVE_AREA_BASE_S390X	0x1200

#ifndef __s390x__
#define SAVE_AREA_SIZE sizeof(struct save_area_s390)
#define SAVE_AREA_BASE SAVE_AREA_BASE_S390
#else
#define SAVE_AREA_SIZE sizeof(struct save_area_s390x)
#define SAVE_AREA_BASE SAVE_AREA_BASE_S390X
#endif

struct _lowcore
{
#ifndef __s390x__
        /* prefix area: defined by architecture */
	psw_t        restart_psw;              /* 0x000 */
	__u32        ccw2[4];                  /* 0x008 */
	psw_t        external_old_psw;         /* 0x018 */
	psw_t        svc_old_psw;              /* 0x020 */
	psw_t        program_old_psw;          /* 0x028 */
	psw_t        mcck_old_psw;             /* 0x030 */
	psw_t        io_old_psw;               /* 0x038 */
	__u8         pad1[0x58-0x40];          /* 0x040 */
	psw_t        external_new_psw;         /* 0x058 */
	psw_t        svc_new_psw;              /* 0x060 */
	psw_t        program_new_psw;          /* 0x068 */
	psw_t        mcck_new_psw;             /* 0x070 */
	psw_t        io_new_psw;               /* 0x078 */
	__u32        ext_params;               /* 0x080 */
	__u16        cpu_addr;                 /* 0x084 */
	__u16        ext_int_code;             /* 0x086 */
        __u16        svc_ilc;                  /* 0x088 */
        __u16        svc_code;                 /* 0x08a */
        __u16        pgm_ilc;                  /* 0x08c */
        __u16        pgm_code;                 /* 0x08e */
	__u32        trans_exc_code;           /* 0x090 */
	__u16        mon_class_num;            /* 0x094 */
	__u16        per_perc_atmid;           /* 0x096 */
	__u32        per_address;              /* 0x098 */
	__u32        monitor_code;             /* 0x09c */
	__u8         exc_access_id;            /* 0x0a0 */
	__u8         per_access_id;            /* 0x0a1 */
	__u8         pad2[0xB8-0xA2];          /* 0x0a2 */
	__u16        subchannel_id;            /* 0x0b8 */
	__u16        subchannel_nr;            /* 0x0ba */
	__u32        io_int_parm;              /* 0x0bc */
	__u32        io_int_word;              /* 0x0c0 */
	__u8	     pad3[0xc8-0xc4];	       /* 0x0c4 */
	__u32	     stfl_fac_list;	       /* 0x0c8 */
	__u8	     pad4[0xd4-0xcc];	       /* 0x0cc */
	__u32        extended_save_area_addr;  /* 0x0d4 */
	__u32        cpu_timer_save_area[2];   /* 0x0d8 */
	__u32        clock_comp_save_area[2];  /* 0x0e0 */
	__u32        mcck_interruption_code[2]; /* 0x0e8 */
	__u8	     pad5[0xf4-0xf0];	       /* 0x0f0 */
	__u32        external_damage_code;     /* 0x0f4 */
	__u32        failing_storage_address;  /* 0x0f8 */
	__u8	     pad6[0x100-0xfc];	       /* 0x0fc */
	__u32        st_status_fixed_logout[4];/* 0x100 */
	__u8	     pad7[0x120-0x110];        /* 0x110 */
	__u32        access_regs_save_area[16];/* 0x120 */
	__u32        floating_pt_save_area[8]; /* 0x160 */
	__u32        gpregs_save_area[16];     /* 0x180 */
	__u32        cregs_save_area[16];      /* 0x1c0 */	

        psw_t        return_psw;               /* 0x200 */
	__u8	     irb[64];		       /* 0x208 */
	__u64        sync_enter_timer;         /* 0x248 */
	__u64        async_enter_timer;        /* 0x250 */
	__u64        exit_timer;               /* 0x258 */
	__u64	     user_timer;	       /* 0x260 */
	__u64	     system_timer;	       /* 0x268 */
	__u64	     steal_timer;	       /* 0x270 */
	__u64	     last_update_timer;        /* 0x278 */
	__u64	     last_update_clock;        /* 0x280 */
        psw_t        return_mcck_psw;          /* 0x288 */
	__u8         pad8[0xc00-0x290];        /* 0x290 */

        /* System info area */
	__u32        save_area[16];            /* 0xc00 */
	__u32        kernel_stack;             /* 0xc40 */
	__u32        thread_info;              /* 0xc44 */
	__u32        async_stack;              /* 0xc48 */
	__u32        kernel_asce;              /* 0xc4c */
	__u32        user_asce;                /* 0xc50 */
	__u32        panic_stack;              /* 0xc54 */
	__u32	     user_exec_asce;	       /* 0xc58 */
	__u8	     pad10[0xc60-0xc5c];       /* 0xc5c */
	/* entry.S sensitive area start */
	struct       cpuinfo_S390 cpu_data;    /* 0xc60 */
	__u32        ipl_device;               /* 0xc7c */
	/* entry.S sensitive area end */

        /* SMP info area: defined by DJB */
	__u64	     clock_comparator;	       /* 0xc80 */
	__u32        ext_call_fast;            /* 0xc88 */
	__u32        percpu_offset;            /* 0xc8c */
	__u32        current_task;	       /* 0xc90 */
	__u32        softirq_pending;	       /* 0xc94 */
	__u64        int_clock;                /* 0xc98 */
        __u8         pad11[0xe00-0xca0];       /* 0xca0 */

        /* 0xe00 is used as indicator for dump tools */
        /* whether the kernel died with panic() or not */
        __u32        panic_magic;              /* 0xe00 */

        /* Align to the top 1k of prefix area */
	__u8         pad12[0x1000-0xe04];      /* 0xe04 */
#else /* !__s390x__ */
        /* prefix area: defined by architecture */
	__u32        ccw1[2];                  /* 0x000 */
	__u32        ccw2[4];                  /* 0x008 */
	__u8         pad1[0x80-0x18];          /* 0x018 */
	__u32        ext_params;               /* 0x080 */
	__u16        cpu_addr;                 /* 0x084 */
	__u16        ext_int_code;             /* 0x086 */
        __u16        svc_ilc;                  /* 0x088 */
        __u16        svc_code;                 /* 0x08a */
        __u16        pgm_ilc;                  /* 0x08c */
        __u16        pgm_code;                 /* 0x08e */
	__u32        data_exc_code;            /* 0x090 */
	__u16        mon_class_num;            /* 0x094 */
	__u16        per_perc_atmid;           /* 0x096 */
	addr_t       per_address;              /* 0x098 */
	__u8         exc_access_id;            /* 0x0a0 */
	__u8         per_access_id;            /* 0x0a1 */
	__u8         op_access_id;             /* 0x0a2 */
	__u8         ar_access_id;             /* 0x0a3 */
	__u8         pad2[0xA8-0xA4];          /* 0x0a4 */
	addr_t       trans_exc_code;           /* 0x0A0 */
	addr_t       monitor_code;             /* 0x09c */
	__u16        subchannel_id;            /* 0x0b8 */
	__u16        subchannel_nr;            /* 0x0ba */
	__u32        io_int_parm;              /* 0x0bc */
	__u32        io_int_word;              /* 0x0c0 */
	__u8         pad3[0xc8-0xc4];          /* 0x0c4 */
	__u32        stfl_fac_list;            /* 0x0c8 */
	__u8         pad4[0xe8-0xcc];          /* 0x0cc */
	__u32        mcck_interruption_code[2]; /* 0x0e8 */
	__u8         pad5[0xf4-0xf0];          /* 0x0f0 */
	__u32        external_damage_code;     /* 0x0f4 */
	addr_t       failing_storage_address;  /* 0x0f8 */
	__u8         pad6[0x120-0x100];        /* 0x100 */
	psw_t        restart_old_psw;          /* 0x120 */
	psw_t        external_old_psw;         /* 0x130 */
	psw_t        svc_old_psw;              /* 0x140 */
	psw_t        program_old_psw;          /* 0x150 */
	psw_t        mcck_old_psw;             /* 0x160 */
	psw_t        io_old_psw;               /* 0x170 */
	__u8         pad7[0x1a0-0x180];        /* 0x180 */
	psw_t        restart_psw;              /* 0x1a0 */
	psw_t        external_new_psw;         /* 0x1b0 */
	psw_t        svc_new_psw;              /* 0x1c0 */
	psw_t        program_new_psw;          /* 0x1d0 */
	psw_t        mcck_new_psw;             /* 0x1e0 */
	psw_t        io_new_psw;               /* 0x1f0 */
        psw_t        return_psw;               /* 0x200 */
	__u8	     irb[64];		       /* 0x210 */
	__u64        sync_enter_timer;         /* 0x250 */
	__u64        async_enter_timer;        /* 0x258 */
	__u64        exit_timer;               /* 0x260 */
	__u64	     user_timer;	       /* 0x268 */
	__u64	     system_timer;	       /* 0x270 */
	__u64	     steal_timer;	       /* 0x278 */
	__u64	     last_update_timer;        /* 0x280 */
	__u64	     last_update_clock;        /* 0x288 */
        psw_t        return_mcck_psw;          /* 0x290 */
        __u8         pad8[0xc00-0x2a0];        /* 0x2a0 */
        /* System info area */
	__u64        save_area[16];            /* 0xc00 */
        __u8         pad9[0xd40-0xc80];        /* 0xc80 */
 	__u64        kernel_stack;             /* 0xd40 */
	__u64        thread_info;              /* 0xd48 */
	__u64        async_stack;              /* 0xd50 */
	__u64        kernel_asce;              /* 0xd58 */
	__u64        user_asce;                /* 0xd60 */
	__u64        panic_stack;              /* 0xd68 */
	__u64	     user_exec_asce;	       /* 0xd70 */
	__u8	     pad10[0xd80-0xd78];       /* 0xd78 */
	/* entry.S sensitive area start */
	struct       cpuinfo_S390 cpu_data;    /* 0xd80 */
	__u32        ipl_device;               /* 0xdb8 */
	__u32        pad11;                    /* 0xdbc */
	/* entry.S sensitive area end */

        /* SMP info area: defined by DJB */
	__u64	     clock_comparator;	       /* 0xdc0 */
	__u64        ext_call_fast;            /* 0xdc8 */
	__u64        percpu_offset;            /* 0xdd0 */
	__u64        current_task;	       /* 0xdd8 */
	__u32	     softirq_pending;	       /* 0xde0 */
	__u32	     pad_0x0de4;	       /* 0xde4 */
	__u64        int_clock;                /* 0xde8 */
        __u8         pad12[0xe00-0xdf0];       /* 0xdf0 */

        /* 0xe00 is used as indicator for dump tools */
        /* whether the kernel died with panic() or not */
        __u32        panic_magic;              /* 0xe00 */

	/* Per cpu primary space access list */
	__u8	     pad_0xe04[0xe38-0xe04];   /* 0xe04 */
	__u64	     vdso_per_cpu_data;	       /* 0xe38 */
	__u32	     paste[16];		       /* 0xe40 */

	__u8	     pad13[0x11b8-0xe80];      /* 0xe80 */

	/* 64 bit extparam used for pfault, diag 250 etc  */
	__u64        ext_params2;               /* 0x11B8 */

	__u8         pad14[0x1200-0x11C0];      /* 0x11C0 */

        /* System info area */ 

	__u64        floating_pt_save_area[16]; /* 0x1200 */
	__u64        gpregs_save_area[16];      /* 0x1280 */
	__u32        st_status_fixed_logout[4]; /* 0x1300 */
	__u8         pad15[0x1318-0x1310];      /* 0x1310 */
	__u32        prefixreg_save_area;       /* 0x1318 */
	__u32        fpt_creg_save_area;        /* 0x131c */
	__u8         pad16[0x1324-0x1320];      /* 0x1320 */
	__u32        tod_progreg_save_area;     /* 0x1324 */
	__u32        cpu_timer_save_area[2];    /* 0x1328 */
	__u32        clock_comp_save_area[2];   /* 0x1330 */
	__u8         pad17[0x1340-0x1338];      /* 0x1338 */
	__u32        access_regs_save_area[16]; /* 0x1340 */ 
	__u64        cregs_save_area[16];       /* 0x1380 */

	/* align to the top of the prefix area */

	__u8         pad18[0x2000-0x1400];      /* 0x1400 */
#endif /* !__s390x__ */
} __attribute__((packed)); /* End structure*/

#define S390_lowcore (*((struct _lowcore *) 0))
extern struct _lowcore *lowcore_ptr[];

static inline void set_prefix(__u32 address)
{
	asm volatile("spx %0" : : "m" (address) : "memory");
}

static inline __u32 store_prefix(void)
{
	__u32 address;

	asm volatile("stpx %0" : "=m" (address));
	return address;
}

#define __PANIC_MAGIC           0xDEADC0DE

#endif

#endif
Commit	Line	Data
1da177e4 LT	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
e87bfe51	38	#define __LC_IPL_PARMBLOCK_PTR 0x014
1da177e4 LT	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
ff6b8ea6	51	#define __LC_AR_MODE_ID 0x0A3
1da177e4 LT	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
9e74a6b8 CB	59	#define __LC_LAST_BREAK 0x110
9e74a6b8 CB	60
1da177e4 LT	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
aa5e97ce MS	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
ae6aa2ea	75	#define __LC_RETURN_MCCK_PSW 0x288
1da177e4 LT	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
1da177e4 LT	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
aa5e97ce MS	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
ae6aa2ea	97	#define __LC_RETURN_MCCK_PSW 0x290
1da177e4 LT	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
4ae9538d PO	104	#define __LC_CPUID 0xD80
4ae9538d PO	105	#define __LC_CPUADDR 0xD88
1da177e4	106	#define __LC_IPLDEV 0xDB8
1da177e4 LT	107	#define __LC_CURRENT 0xDD8
1da177e4 LT	108	#define __LC_INT_CLOCK 0xDE8
c742b31c	109	#define __LC_VDSO_PER_CPU 0xE38
1da177e4 LT	110	#endif /* __s390x__ */
1da177e4 LT	111
c742b31c	112	#define __LC_PASTE 0xE40
1da177e4	113
ff6b8ea6	114	#define __LC_PANIC_MAGIC 0xE00
1da177e4 LT	115	#ifndef __s390x__
1da177e4 LT	116	#define __LC_PFAULT_INTPARM 0x080
77fa2245	117	#define __LC_CPU_TIMER_SAVE_AREA 0x0D8
ff6b8ea6 MH	118	#define __LC_CLOCK_COMP_SAVE_AREA 0x0E0
	119	#define __LC_PSW_SAVE_AREA 0x100
	120	#define __LC_PREFIX_SAVE_AREA 0x108
1da177e4	121	#define __LC_AREGS_SAVE_AREA 0x120
ff6b8ea6	122	#define __LC_FPREGS_SAVE_AREA 0x160
77fa2245	123	#define __LC_GPREGS_SAVE_AREA 0x180
1da177e4 LT	124	#define __LC_CREGS_SAVE_AREA 0x1C0
	125	#else /* __s390x__ */
	126	#define __LC_PFAULT_INTPARM 0x11B8
ff6b8ea6	127	#define __LC_FPREGS_SAVE_AREA 0x1200
77fa2245	128	#define __LC_GPREGS_SAVE_AREA 0x1280
ff6b8ea6 MH	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
77fa2245	133	#define __LC_CPU_TIMER_SAVE_AREA 0x1328
ff6b8ea6	134	#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
1da177e4 LT	135	#define __LC_AREGS_SAVE_AREA 0x1340
	136	#define __LC_CREGS_SAVE_AREA 0x1380
	137	#endif /* __s390x__ */
	138
	139	#ifndef __ASSEMBLY__
	140
1da177e4 LT	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
411ed322 MH	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
1da177e4 LT	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 */
cf8ba7a9 MS	234	__u8 pad3[0xc8-0xc4]; /* 0x0c4 */
	235	__u32 stfl_fac_list; /* 0x0c8 */
	236	__u8 pad4[0xd4-0xcc]; /* 0x0cc */
77fa2245	237	__u32 extended_save_area_addr; /* 0x0d4 */
1da177e4 LT	238	__u32 cpu_timer_save_area[2]; /* 0x0d8 */
	239	__u32 clock_comp_save_area[2]; /* 0x0e0 */
	240	__u32 mcck_interruption_code[2]; /* 0x0e8 */
cf8ba7a9	241	__u8 pad5[0xf4-0xf0]; /* 0x0f0 */
1da177e4 LT	242	__u32 external_damage_code; /* 0x0f4 */
1da177e4 LT	243	__u32 failing_storage_address; /* 0x0f8 */
cf8ba7a9	244	__u8 pad6[0x100-0xfc]; /* 0x0fc */
1da177e4	245	__u32 st_status_fixed_logout[4];/* 0x100 */
cf8ba7a9	246	__u8 pad7[0x120-0x110]; /* 0x110 */
1da177e4 LT	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 */
aa5e97ce MS	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 */
ae6aa2ea MS	262	psw_t return_mcck_psw; /* 0x288 */
ae6aa2ea MS	263	__u8 pad8[0xc00-0x290]; /* 0x290 */
1da177e4 LT	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 */
c1821c2e GS	273	__u32 user_exec_asce; /* 0xc58 */
c1821c2e GS	274	__u8 pad10[0xc60-0xc5c]; /* 0xc5c */
1da177e4 LT	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 */
5a62b192	281	__u64 clock_comparator; /* 0xc80 */
1da177e4 LT	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 */
aa5e97ce MS	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 */
ae6aa2ea MS	353	psw_t return_mcck_psw; /* 0x290 */
ae6aa2ea MS	354	__u8 pad8[0xc00-0x2a0]; /* 0x2a0 */
1da177e4 LT	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 */
c1821c2e GS	364	__u64 user_exec_asce; /* 0xd70 */
c1821c2e GS	365	__u8 pad10[0xd80-0xd78]; /* 0xd78 */
1da177e4 LT	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 */
5a62b192	373	__u64 clock_comparator; /* 0xdc0 */
1da177e4 LT	374	__u64 ext_call_fast; /* 0xdc8 */
	375	__u64 percpu_offset; /* 0xdd0 */
	376	__u64 current_task; /* 0xdd8 */
1a5debaa HC	377	__u32 softirq_pending; /* 0xde0 */
1a5debaa HC	378	__u32 pad_0x0de4; /* 0xde4 */
1da177e4 LT	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
c742b31c	386	/* Per cpu primary space access list */
d5e842c4 MS	387	__u8 pad_0xe04[0xe38-0xe04]; /* 0xe04 */
d5e842c4 MS	388	__u64 vdso_per_cpu_data; /* 0xe38 */
c742b31c MS	389	__u32 paste[16]; /* 0xe40 */
	390
	391	__u8 pad13[0x11b8-0xe80]; /* 0xe80 */
8a88ac61 CB	392
	393	/* 64 bit extparam used for pfault, diag 250 etc */
	394	__u64 ext_params2; /* 0x11B8 */
	395
	396	__u8 pad14[0x1200-0x11C0]; /* 0x11C0 */
1da177e4 LT	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 */
8a88ac61	403	__u8 pad15[0x1318-0x1310]; /* 0x1310 */
1da177e4 LT	404	__u32 prefixreg_save_area; /* 0x1318 */
1da177e4 LT	405	__u32 fpt_creg_save_area; /* 0x131c */
8a88ac61	406	__u8 pad16[0x1324-0x1320]; /* 0x1320 */
1da177e4 LT	407	__u32 tod_progreg_save_area; /* 0x1324 */
	408	__u32 cpu_timer_save_area[2]; /* 0x1328 */
	409	__u32 clock_comp_save_area[2]; /* 0x1330 */
8a88ac61	410	__u8 pad17[0x1340-0x1338]; /* 0x1338 */
1da177e4 LT	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
8a88ac61	416	__u8 pad18[0x2000-0x1400]; /* 0x1400 */
1da177e4 LT	417	#endif /* !__s390x__ */
	418	} __attribute__((packed)); /* End structure*/
	419
	420	#define S390_lowcore (((struct _lowcore ) 0))
	421	extern struct _lowcore *lowcore_ptr[];
	422
4448aaf0	423	static inline void set_prefix(__u32 address)
1da177e4	424	{
94c12cc7	425	asm volatile("spx %0" : : "m" (address) : "memory");
1da177e4 LT	426	}
1da177e4 LT	427
15e9b586 HC	428	static inline __u32 store_prefix(void)
	429	{
	430	__u32 address;
	431
	432	asm volatile("stpx %0" : "=m" (address));
	433	return address;
	434	}
	435
1da177e4 LT	436	#define __PANIC_MAGIC 0xDEADC0DE
	437
	438	#endif
	439
	440	#endif