/* * 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 #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 #define __LC_EXT_PARAMS 0x080 #define __LC_CPU_ADDRESS 0x084 #define __LC_EXT_INT_CODE 0x086 #define __LC_SVC_INT_CODE 0x08B #define __LC_PGM_ILC 0x08C #define __LC_PGM_INT_CODE 0x08E #define __LC_TRANS_EXC_ADDR 0x090 #define __LC_SUBCHANNEL_ID 0x0B8 #define __LC_SUBCHANNEL_NR 0x0BA #define __LC_IO_INT_PARM 0x0BC #define __LC_MCCK_CODE 0x0E8 #define __LC_AREGS_SAVE_AREA 0x200 #define __LC_CREGS_SAVE_AREA 0x240 #define __LC_RETURN_PSW 0x280 #define __LC_SYNC_IO_WORD 0x400 #define __LC_SAVE_AREA 0xC00 #define __LC_KERNEL_STACK 0xC40 #define __LC_KERNEL_LEVEL 0xC44 #define __LC_IRQ_STAT 0xC48 #define __LC_CPUID 0xC60 #define __LC_CPUADDR 0xC68 #define __LC_IPLDEV 0xC7C /* interrupt handler start with all io, external and mcck interrupt disabled */ #define _RESTART_PSW_MASK 0x00080000 #define _EXT_PSW_MASK 0x04080000 #define _PGM_PSW_MASK 0x04080000 #define _SVC_PSW_MASK 0x04080000 #define _MCCK_PSW_MASK 0x040A0000 #define _IO_PSW_MASK 0x04080000 #define _USER_PSW_MASK 0x070DC000/* DAT, IO, EXT, Home-space */ #define _WAIT_PSW_MASK 0x070E0000/* DAT, IO, EXT, Wait, Home-space */ #define _DW_PSW_MASK 0x000A0000/* disabled wait PSW mask */ #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 0x00000000 #define _PSW_SEC_SPACE_MODE 0x00008000 #define _PSW_ACC_REG_MODE 0x00004000 #define _PSW_HOME_SPACE_MODE 0x0000C000 #define _PSW_WAIT_MASK_BIT 0x00020000 /* Wait bit */ #define _PSW_IO_MASK_BIT 0x02000000 /* IO bit */ #define _PSW_IO_WAIT 0x02020000 /* IO & Wait bit */ /* we run in 31 Bit mode */ #define _ADDR_31 0x80000000 #ifndef __ASSEMBLY__ #include #include #include #include #include struct _lowcore { /* 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 scv_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 */ __u8 pad3[0xD8-0xC0]; /* 0x0c0 */ __u32 cpu_timer_save_area[2]; /* 0x0d8 */ __u32 clock_comp_save_area[2]; /* 0x0e0 */ __u32 mcck_interuption_code[2]; /* 0x0e8 */ __u8 pad4[0xf4-0xf0]; /* 0x0f0 */ __u32 external_damage_code; /* 0x0f4 */ __u32 failing_storage_address; /* 0x0f8 */ __u8 pad5[0x100-0xfc]; /* 0x0fc */ __u32 st_status_fixed_logout[4];/* 0x100 */ __u8 pad6[0x160-0x110]; /* 0x110 */ __u32 floating_pt_save_area[8]; /* 0x160 */ __u32 gpregs_save_area[16]; /* 0x180 */ __u8 pad7[0x200-0x1c0]; /* 0x1c0 */ __u32 access_regs_save_area[16];/* 0x200 */ __u32 cregs_save_area[16]; /* 0x240 */ psw_t return_psw; /* 0x280 */ __u8 pad8[0x400-0x288]; /* 0x288 */ __u32 sync_io_word; /* 0x400 */ __u8 pad9[0xc00-0x404]; /* 0x404 */ /* System info area */ __u32 save_area[16]; /* 0xc00 */ __u32 kernel_stack; /* 0xc40 */ __u32 kernel_level; /* 0xc44 */ /* entry.S sensitive area start */ /* Next 6 words are the s390 equivalent of irq_stat */ __u32 __softirq_active; /* 0xc48 */ __u32 __softirq_mask; /* 0xc4c */ __u32 __local_irq_count; /* 0xc50 */ __u32 __local_bh_count; /* 0xc54 */ __u32 __syscall_count; /* 0xc58 */ __u8 pad10[0xc60-0xc5c]; /* 0xc5c */ struct cpuinfo_S390 cpu_data; /* 0xc60 */ __u32 ipl_device; /* 0xc7c */ /* entry.S sensitive area end */ /* SMP info area: defined by DJB */ __u64 jiffy_timer_cc; /* 0xc80 */ atomic_t ext_call_fast; /* 0xc88 */ atomic_t ext_call_queue; /* 0xc8c */ atomic_t ext_call_count; /* 0xc90 */ /* Align SMP info to the top 1k of prefix area */ __u8 pad11[0x1000-0xc94]; /* 0xc94 */ } __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__ */ #endif