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Diffstat (limited to 'include/asm-s390x/lowcore.h')
| -rw-r--r-- | include/asm-s390x/lowcore.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/include/asm-s390x/lowcore.h b/include/asm-s390x/lowcore.h new file mode 100644 index 000000000..215b8b8e0 --- /dev/null +++ b/include/asm-s390x/lowcore.h @@ -0,0 +1,196 @@ +/* + * include/asm-s390/lowcore.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hpenner@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 + +#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 +#define __LC_RETURN_PSW 0x0200 +#define __LC_SYNC_IO_WORD 0x0210 +#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_TRANS_EXC_ADDR 0x0a8 +#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_SAVE_AREA 0xC00 +#define __LC_CREGS_SAVE_AREA 0xC80 +#define __LC_AREGS_SAVE_AREA 0xD00 +#define __LC_KERNEL_STACK 0xD40 +#define __LC_KERNEL_LEVEL 0xD48 +#define __LC_IRQ_STAT 0xD50 +#define __LC_CPUID 0xD90 +#define __LC_CPUADDR 0xD98 +#define __LC_IPLDEV 0xDB8 + +#define __LC_PANIC_MAGIC 0xE00 + + +/* interrupt handler start with all io, external and mcck interrupt disabled */ + +#define _RESTART_PSW_MASK 0x0000000180000000 +#define _EXT_PSW_MASK 0x0400000180000000 +#define _PGM_PSW_MASK 0x0400000180000000 +#define _SVC_PSW_MASK 0x0400000180000000 +#define _MCCK_PSW_MASK 0x0400000180000000 +#define _IO_PSW_MASK 0x0400000180000000 +#define _USER_PSW_MASK 0x0701C00180000000 +#define _WAIT_PSW_MASK 0x0706000180000000 +#define _DW_PSW_MASK 0x0002000180000000 + +#define _PRIMARY_MASK 0x0000 /* MASK for SACF */ +#define _SECONDARY_MASK 0x0100 /* MASK for SACF */ +#define _ACCESS_MASK 0x0200 /* MASK for SACF */ +#define _HOME_MASK 0x0300 /* MASK for SACF */ + +#define _PSW_PRIM_SPACE_MODE 0x0000000000000000 +#define _PSW_SEC_SPACE_MODE 0x0000800000000000 +#define _PSW_ACC_REG_MODE 0x0000400000000000 +#define _PSW_HOME_SPACE_MODE 0x0000C00000000000 + +#define _PSW_WAIT_MASK_BIT 0x0002000000000000 +#define _PSW_IO_MASK_BIT 0x0200000000000000 +#define _PSW_IO_WAIT 0x0202000000000000 + +#ifndef __ASSEMBLY__ + +#include <linux/config.h> +#include <asm/processor.h> +#include <linux/types.h> +#include <asm/atomic.h> +#include <asm/sigp.h> + + +struct _lowcore +{ + /* 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 scv_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_interuption_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 */ + __u32 sync_io_word; /* 0x210 */ + __u8 pad8[0xc00-0x214]; /* 0x214 */ + /* System info area */ + __u64 save_area[16]; /* 0xc00 */ + __u64 cregs_save_area[16]; /* 0xc80 */ + __u32 access_regs_save_area[16];/* 0xd00 */ + __u64 kernel_stack; /* 0xd40 */ + __u64 kernel_level; /* 0xd48 */ + /* entry.S sensitive area start */ + /* Next 6 words are the s390 equivalent of irq_stat */ + __u32 __softirq_active; /* 0xd50 */ + __u32 __softirq_mask; /* 0xd54 */ + __u32 __local_irq_count; /* 0xd58 */ + __u32 __local_bh_count; /* 0xd5c */ + __u32 __syscall_count; /* 0xd60 */ + __u8 pad10[0xd80-0xd64]; /* 0xd64 */ + struct cpuinfo_S390 cpu_data; /* 0xd80 */ + __u32 ipl_device; /* 0xdb8 */ + __u32 pad13; /* 0xdbc was lsw word of ipl_device until a bug was found DJB */ + /* entry.S sensitive area end */ + + /* SMP info area: defined by DJB */ + __u64 jiffy_timer_cc; /* 0xdc0 */ + __u64 ext_call_fast; /* 0xdc8 */ + __u64 ext_call_queue; /* 0xdd0 */ + __u64 ext_call_count; /* 0xdd8 */ + + __u8 pad11[0xe00-0xde0]; /* 0xde0 */ + + /* 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 */ +} __attribute__((packed)); /* End structure*/ + +extern __inline__ void set_prefix(__u32 address) +{ + __asm__ __volatile__ ("spx %0" : : "m" (address) : "memory" ); +} + +#define S390_lowcore (*((struct _lowcore *) 0)) +extern struct _lowcore *lowcore_ptr[]; + +#ifndef CONFIG_SMP +#define get_cpu_lowcore(cpu) S390_lowcore +#define safe_get_cpu_lowcore(cpu) S390_lowcore +#else +#define get_cpu_lowcore(cpu) (*lowcore_ptr[cpu]) +#define safe_get_cpu_lowcore(cpu) \ + ((cpu)==smp_processor_id() ? S390_lowcore:(*lowcore_ptr[(cpu)])) +#endif +#endif /* __ASSEMBLY__ */ + +#define __PANIC_MAGIC 0xDEADC0DE + +#endif + |