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-rw-r--r--arch/s390/include/asm/lowcore.h433
1 files changed, 433 insertions, 0 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
new file mode 100644
index 000000000000..0bc51d52a899
--- /dev/null
+++ b/arch/s390/include/asm/lowcore.h
@@ -0,0 +1,433 @@
+/*
+ * 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_LAST_UPDATE_TIMER 0x260
+#define __LC_USER_TIMER 0x268
+#define __LC_SYSTEM_TIMER 0x270
+#define __LC_LAST_UPDATE_CLOCK 0x278
+#define __LC_STEAL_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_LAST_UPDATE_TIMER 0x268
+#define __LC_USER_TIMER 0x270
+#define __LC_SYSTEM_TIMER 0x278
+#define __LC_LAST_UPDATE_CLOCK 0x280
+#define __LC_STEAL_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
+#endif /* __s390x__ */
+
+
+#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 last_update_timer; /* 0x260 */
+ __u64 user_timer; /* 0x268 */
+ __u64 system_timer; /* 0x270 */
+ __u64 last_update_clock; /* 0x278 */
+ __u64 steal_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 last_update_timer; /* 0x268 */
+ __u64 user_timer; /* 0x270 */
+ __u64 system_timer; /* 0x278 */
+ __u64 last_update_clock; /* 0x280 */
+ __u64 steal_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 */
+
+ __u8 pad13[0x11b8-0xe04]; /* 0xe04 */
+
+ /* 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

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