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/* SPDX-License-Identifier: GPL-2.0 */
/*
 *    Copyright IBM Corp. 1999, 2012
 *    Author(s): Hartmut Penner <hp@de.ibm.com>,
 *		 Martin Schwidefsky <schwidefsky@de.ibm.com>,
 *		 Denis Joseph Barrow,
 */

#ifndef _ASM_S390_LOWCORE_H
#define _ASM_S390_LOWCORE_H

#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/cpu.h>
#include <asm/types.h>

#define LC_ORDER 1
#define LC_PAGES 2

struct lowcore {
	__u8	pad_0x0000[0x0014-0x0000];	/* 0x0000 */
	__u32	ipl_parmblock_ptr;		/* 0x0014 */
	__u8	pad_0x0018[0x0080-0x0018];	/* 0x0018 */
	__u32	ext_params;			/* 0x0080 */
	__u16	ext_cpu_addr;			/* 0x0084 */
	__u16	ext_int_code;			/* 0x0086 */
	__u16	svc_ilc;			/* 0x0088 */
	__u16	svc_code;			/* 0x008a */
	__u16	pgm_ilc;			/* 0x008c */
	__u16	pgm_code;			/* 0x008e */
	__u32	data_exc_code;			/* 0x0090 */
	__u16	mon_class_num;			/* 0x0094 */
	__u8	per_code;			/* 0x0096 */
	__u8	per_atmid;			/* 0x0097 */
	__u64	per_address;			/* 0x0098 */
	__u8	exc_access_id;			/* 0x00a0 */
	__u8	per_access_id;			/* 0x00a1 */
	__u8	op_access_id;			/* 0x00a2 */
	__u8	ar_mode_id;			/* 0x00a3 */
	__u8	pad_0x00a4[0x00a8-0x00a4];	/* 0x00a4 */
	__u64	trans_exc_code;			/* 0x00a8 */
	__u64	monitor_code;			/* 0x00b0 */
	__u16	subchannel_id;			/* 0x00b8 */
	__u16	subchannel_nr;			/* 0x00ba */
	__u32	io_int_parm;			/* 0x00bc */
	__u32	io_int_word;			/* 0x00c0 */
	__u8	pad_0x00c4[0x00c8-0x00c4];	/* 0x00c4 */
	__u32	stfl_fac_list;			/* 0x00c8 */
	__u8	pad_0x00cc[0x00e8-0x00cc];	/* 0x00cc */
	__u64	mcck_interruption_code;		/* 0x00e8 */
	__u8	pad_0x00f0[0x00f4-0x00f0];	/* 0x00f0 */
	__u32	external_damage_code;		/* 0x00f4 */
	__u64	failing_storage_address;	/* 0x00f8 */
	__u8	pad_0x0100[0x0110-0x0100];	/* 0x0100 */
	__u64	breaking_event_addr;		/* 0x0110 */
	__u8	pad_0x0118[0x0120-0x0118];	/* 0x0118 */
	psw_t	restart_old_psw;		/* 0x0120 */
	psw_t	external_old_psw;		/* 0x0130 */
	psw_t	svc_old_psw;			/* 0x0140 */
	psw_t	program_old_psw;		/* 0x0150 */
	psw_t	mcck_old_psw;			/* 0x0160 */
	psw_t	io_old_psw;			/* 0x0170 */
	__u8	pad_0x0180[0x01a0-0x0180];	/* 0x0180 */
	psw_t	restart_psw;			/* 0x01a0 */
	psw_t	external_new_psw;		/* 0x01b0 */
	psw_t	svc_new_psw;			/* 0x01c0 */
	psw_t	program_new_psw;		/* 0x01d0 */
	psw_t	mcck_new_psw;			/* 0x01e0 */
	psw_t	io_new_psw;			/* 0x01f0 */

	/* Save areas. */
	__u64	save_area_sync[8];		/* 0x0200 */
	__u64	save_area_async[8];		/* 0x0240 */
	__u64	save_area_restart[1];		/* 0x0280 */

	/* CPU flags. */
	__u64	cpu_flags;			/* 0x0288 */

	/* Return psws. */
	psw_t	return_psw;			/* 0x0290 */
	psw_t	return_mcck_psw;		/* 0x02a0 */

	/* CPU accounting and timing values. */
	__u64	sync_enter_timer;		/* 0x02b0 */
	__u64	async_enter_timer;		/* 0x02b8 */
	__u64	mcck_enter_timer;		/* 0x02c0 */
	__u64	exit_timer;			/* 0x02c8 */
	__u64	user_timer;			/* 0x02d0 */
	__u64	guest_timer;			/* 0x02d8 */
	__u64	system_timer;			/* 0x02e0 */
	__u64	hardirq_timer;			/* 0x02e8 */
	__u64	softirq_timer;			/* 0x02f0 */
	__u64	steal_timer;			/* 0x02f8 */
	__u64	last_update_timer;		/* 0x0300 */
	__u64	last_update_clock;		/* 0x0308 */
	__u64	int_clock;			/* 0x0310 */
	__u64	mcck_clock;			/* 0x0318 */
	__u64	clock_comparator;		/* 0x0320 */
	__u64	boot_clock[2];			/* 0x0328 */

	/* Current process. */
	__u64	current_task;			/* 0x0338 */
	__u64	kernel_stack;			/* 0x0340 */

	/* Interrupt, panic and restart stack. */
	__u64	async_stack;			/* 0x0348 */
	__u64	panic_stack;			/* 0x0350 */
	__u64	restart_stack;			/* 0x0358 */

	/* Restart function and parameter. */
	__u64	restart_fn;			/* 0x0360 */
	__u64	restart_data;			/* 0x0368 */
	__u64	restart_source;			/* 0x0370 */

	/* Address space pointer. */
	__u64	kernel_asce;			/* 0x0378 */
	__u64	user_asce;			/* 0x0380 */
	__u64	vdso_asce;			/* 0x0388 */

	/*
	 * The lpp and current_pid fields form a
	 * 64-bit value that is set as program
	 * parameter with the LPP instruction.
	 */
	__u32	lpp;				/* 0x0390 */
	__u32	current_pid;			/* 0x0394 */

	/* SMP info area */
	__u32	cpu_nr;				/* 0x0398 */
	__u32	softirq_pending;		/* 0x039c */
	__u32	preempt_count;			/* 0x03a0 */
	__u32	spinlock_lockval;		/* 0x03a4 */
	__u32	spinlock_index;			/* 0x03a8 */
	__u32	fpu_flags;			/* 0x03ac */
	__u64	percpu_offset;			/* 0x03b0 */
	__u64	vdso_per_cpu_data;		/* 0x03b8 */
	__u64	machine_flags;			/* 0x03c0 */
	__u64	gmap;				/* 0x03c8 */
	__u8	pad_0x03d0[0x0400-0x03d0];	/* 0x03d0 */

	/* br %r1 trampoline */
	__u16	br_r1_trampoline;		/* 0x0400 */
	__u8	pad_0x0402[0x0e00-0x0402];	/* 0x0402 */

	/*
	 * 0xe00 contains the address of the IPL Parameter Information
	 * block. Dump tools need IPIB for IPL after dump.
	 * Note: do not change the position of any fields in 0x0e00-0x0f00
	 */
	__u64	ipib;				/* 0x0e00 */
	__u32	ipib_checksum;			/* 0x0e08 */
	__u64	vmcore_info;			/* 0x0e0c */
	__u8	pad_0x0e14[0x0e18-0x0e14];	/* 0x0e14 */
	__u64	os_info;			/* 0x0e18 */
	__u8	pad_0x0e20[0x0f00-0x0e20];	/* 0x0e20 */

	/* Extended facility list */
	__u64	stfle_fac_list[16];		/* 0x0f00 */
	__u64	alt_stfle_fac_list[16];		/* 0x0f80 */
	__u8	pad_0x1000[0x11b0-0x1000];	/* 0x1000 */

	/* Pointer to the machine check extended save area */
	__u64	mcesad;				/* 0x11b0 */

	/* 64 bit extparam used for pfault/diag 250: defined by architecture */
	__u64	ext_params2;			/* 0x11B8 */
	__u8	pad_0x11c0[0x1200-0x11C0];	/* 0x11C0 */

	/* CPU register save area: defined by architecture */
	__u64	floating_pt_save_area[16];	/* 0x1200 */
	__u64	gpregs_save_area[16];		/* 0x1280 */
	psw_t	psw_save_area;			/* 0x1300 */
	__u8	pad_0x1310[0x1318-0x1310];	/* 0x1310 */
	__u32	prefixreg_save_area;		/* 0x1318 */
	__u32	fpt_creg_save_area;		/* 0x131c */
	__u8	pad_0x1320[0x1324-0x1320];	/* 0x1320 */
	__u32	tod_progreg_save_area;		/* 0x1324 */
	__u32	cpu_timer_save_area[2];		/* 0x1328 */
	__u32	clock_comp_save_area[2];	/* 0x1330 */
	__u8	pad_0x1338[0x1340-0x1338];	/* 0x1338 */
	__u32	access_regs_save_area[16];	/* 0x1340 */
	__u64	cregs_save_area[16];		/* 0x1380 */
	__u8	pad_0x1400[0x1800-0x1400];	/* 0x1400 */

	/* Transaction abort diagnostic block */
	__u8	pgm_tdb[256];			/* 0x1800 */
	__u8	pad_0x1900[0x2000-0x1900];	/* 0x1900 */
} __packed;

#define S390_lowcore (*((struct lowcore *) 0))

extern struct lowcore *lowcore_ptr[];

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

static inline __u32 store_prefix(void)
{
	__u32 address;

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

#endif /* _ASM_S390_LOWCORE_H */

Filemanager

Name Type Size Permission Actions
fpu Folder 0755
trace Folder 0755
Kbuild File 557 B 0644
airq.h File 3.02 KB 0644
alternative-asm.h File 3.07 KB 0644
alternative.h File 4.99 KB 0644
ap.h File 9.9 KB 0644
appldata.h File 1.54 KB 0644
archrandom.h File 1.17 KB 0644
asm-prototypes.h File 227 B 0644
atomic.h File 5.1 KB 0644
atomic_ops.h File 4.02 KB 0644
barrier.h File 1.84 KB 0644
bitops.h File 10.13 KB 0644
bug.h File 1.49 KB 0644
bugs.h File 441 B 0644
cache.h File 387 B 0644
ccwdev.h File 7.99 KB 0644
ccwgroup.h File 2.53 KB 0644
checksum.h File 3.24 KB 0644
chpid.h File 974 B 0644
cio.h File 8.01 KB 0644
clp.h File 1.32 KB 0644
cmb.h File 425 B 0644
cmpxchg.h File 1.76 KB 0644
compat.h File 7.9 KB 0644
cpacf.h File 16.8 KB 0644
cpcmd.h File 1.11 KB 0644
cpu.h File 549 B 0644
cpu_mf.h File 8.99 KB 0644
cpufeature.h File 963 B 0644
cputime.h File 805 B 0644
crw.h File 1.86 KB 0644
css_chars.h File 769 B 0644
ctl_reg.h File 2.89 KB 0644
current.h File 405 B 0644
debug.h File 8.1 KB 0644
delay.h File 721 B 0644
diag.h File 5.94 KB 0644
dis.h File 637 B 0644
dma-mapping.h File 621 B 0644
dma.h File 456 B 0644
eadm.h File 2.03 KB 0644
ebcdic.h File 1.41 KB 0644
elf.h File 10.36 KB 0644
exec.h File 269 B 0644
extable.h File 875 B 0644
extmem.h File 804 B 0644
facility.h File 2.44 KB 0644
fcx.h File 7.91 KB 0644
ftrace.h File 1.66 KB 0644
futex.h File 2.09 KB 0644
gmap.h File 4.93 KB 0644
hardirq.h File 670 B 0644
hugetlb.h File 2.87 KB 0644
hw_irq.h File 249 B 0644
idals.h File 5.22 KB 0644
idle.h File 709 B 0644
io.h File 2.03 KB 0644
ipl.h File 3.6 KB 0644
irq.h File 2.55 KB 0644
irqflags.h File 1.76 KB 0644
isc.h File 1000 B 0644
itcw.h File 950 B 0644
jump_label.h File 1.36 KB 0644
kdebug.h File 386 B 0644
kexec.h File 1.32 KB 0644
kprobes.h File 2.24 KB 0644
kvm_host.h File 22.24 KB 0644
kvm_para.h File 5.78 KB 0644
linkage.h File 633 B 0644
livepatch.h File 461 B 0644
lowcore.h File 6.29 KB 0644
mmu.h File 1.19 KB 0644
mmu_context.h File 3.84 KB 0644
mmzone.h File 316 B 0644
module.h File 802 B 0644
nmi.h File 3.44 KB 0644
nospec-branch.h File 342 B 0644
nospec-insn.h File 3.81 KB 0644
numa.h File 730 B 0644
os_info.h File 1.1 KB 0644
page-states.h File 486 B 0644
page.h File 5.12 KB 0644
pci.h File 6.26 KB 0644
pci_clp.h File 4.25 KB 0644
pci_debug.h File 608 B 0644
pci_dma.h File 5.7 KB 0644
pci_insn.h File 2.59 KB 0644
pci_io.h File 4.58 KB 0644
percpu.h File 6.44 KB 0644
perf_event.h File 2.71 KB 0644
pgalloc.h File 4.32 KB 0644
pgtable.h File 47.7 KB 0644
pkey.h File 4.23 KB 0644
preempt.h File 3.25 KB 0644
processor.h File 10.42 KB 0644
ptrace.h File 5.27 KB 0644
qdio.h File 11.67 KB 0644
reset.h File 471 B 0644
runtime_instr.h File 1.76 KB 0644
schid.h File 525 B 0644
sclp.h File 3.38 KB 0644
scsw.h File 24.1 KB 0644
seccomp.h File 516 B 0644
sections.h File 155 B 0644
segment.h File 93 B 0644
serial.h File 147 B 0644
set_memory.h File 779 B 0644
setup.h File 4.44 KB 0644
shmparam.h File 285 B 0644
signal.h File 644 B 0644
sigp.h File 1.8 KB 0644
smp.h File 2.45 KB 0644
sparsemem.h File 214 B 0644
spinlock.h File 3.53 KB 0644
spinlock_types.h File 437 B 0644
stp.h File 1.26 KB 0644
string.h File 4.5 KB 0644
switch_to.h File 1.37 KB 0644
syscall.h File 2.63 KB 0644
sysinfo.h File 4.22 KB 0644
termios.h File 685 B 0644
thread_info.h File 3.15 KB 0644
timex.h File 6.15 KB 0644
tlb.h File 5.71 KB 0644
tlbflush.h File 3.52 KB 0644
topology.h File 2.69 KB 0644
uaccess.h File 6.57 KB 0644
unistd.h File 1.03 KB 0644
uprobes.h File 588 B 0644
user.h File 3.3 KB 0644
vdso.h File 1.8 KB 0644
vga.h File 170 B 0644
vtime.h File 182 B 0644
vtimer.h File 866 B 0644
vx-insn.h File 10.66 KB 0644
xor.h File 454 B 0644