Disintegrate asm/system.h for S390
Disintegrate asm/system.h for S390.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-s390@vger.kernel.org
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index 2e0bb7f..641c729 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -1,315 +1,7 @@
-/*
- * Copyright IBM Corp. 1999, 2009
- *
- * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
- */
-
-#ifndef __ASM_SYSTEM_H
-#define __ASM_SYSTEM_H
-
-#include <linux/preempt.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <asm/types.h>
-#include <asm/ptrace.h>
-#include <asm/setup.h>
-#include <asm/processor.h>
-#include <asm/lowcore.h>
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
+#include <asm/barrier.h>
#include <asm/cmpxchg.h>
-
-#ifdef __KERNEL__
-
-struct task_struct;
-
-extern struct task_struct *__switch_to(void *, void *);
-extern void update_per_regs(struct task_struct *task);
-
-static inline void save_fp_regs(s390_fp_regs *fpregs)
-{
- asm volatile(
- " std 0,%O0+8(%R0)\n"
- " std 2,%O0+24(%R0)\n"
- " std 4,%O0+40(%R0)\n"
- " std 6,%O0+56(%R0)"
- : "=Q" (*fpregs) : "Q" (*fpregs));
- if (!MACHINE_HAS_IEEE)
- return;
- asm volatile(
- " stfpc %0\n"
- " std 1,%O0+16(%R0)\n"
- " std 3,%O0+32(%R0)\n"
- " std 5,%O0+48(%R0)\n"
- " std 7,%O0+64(%R0)\n"
- " std 8,%O0+72(%R0)\n"
- " std 9,%O0+80(%R0)\n"
- " std 10,%O0+88(%R0)\n"
- " std 11,%O0+96(%R0)\n"
- " std 12,%O0+104(%R0)\n"
- " std 13,%O0+112(%R0)\n"
- " std 14,%O0+120(%R0)\n"
- " std 15,%O0+128(%R0)\n"
- : "=Q" (*fpregs) : "Q" (*fpregs));
-}
-
-static inline void restore_fp_regs(s390_fp_regs *fpregs)
-{
- asm volatile(
- " ld 0,%O0+8(%R0)\n"
- " ld 2,%O0+24(%R0)\n"
- " ld 4,%O0+40(%R0)\n"
- " ld 6,%O0+56(%R0)"
- : : "Q" (*fpregs));
- if (!MACHINE_HAS_IEEE)
- return;
- asm volatile(
- " lfpc %0\n"
- " ld 1,%O0+16(%R0)\n"
- " ld 3,%O0+32(%R0)\n"
- " ld 5,%O0+48(%R0)\n"
- " ld 7,%O0+64(%R0)\n"
- " ld 8,%O0+72(%R0)\n"
- " ld 9,%O0+80(%R0)\n"
- " ld 10,%O0+88(%R0)\n"
- " ld 11,%O0+96(%R0)\n"
- " ld 12,%O0+104(%R0)\n"
- " ld 13,%O0+112(%R0)\n"
- " ld 14,%O0+120(%R0)\n"
- " ld 15,%O0+128(%R0)\n"
- : : "Q" (*fpregs));
-}
-
-static inline void save_access_regs(unsigned int *acrs)
-{
- asm volatile("stam 0,15,%0" : "=Q" (*acrs));
-}
-
-static inline void restore_access_regs(unsigned int *acrs)
-{
- asm volatile("lam 0,15,%0" : : "Q" (*acrs));
-}
-
-#define switch_to(prev,next,last) do { \
- if (prev->mm) { \
- save_fp_regs(&prev->thread.fp_regs); \
- save_access_regs(&prev->thread.acrs[0]); \
- } \
- if (next->mm) { \
- restore_fp_regs(&next->thread.fp_regs); \
- restore_access_regs(&next->thread.acrs[0]); \
- update_per_regs(next); \
- } \
- prev = __switch_to(prev,next); \
-} while (0)
-
-extern void account_vtime(struct task_struct *, struct task_struct *);
-extern void account_tick_vtime(struct task_struct *);
-
-#ifdef CONFIG_PFAULT
-extern int pfault_init(void);
-extern void pfault_fini(void);
-#else /* CONFIG_PFAULT */
-#define pfault_init() ({-1;})
-#define pfault_fini() do { } while (0)
-#endif /* CONFIG_PFAULT */
-
-extern void cmma_init(void);
-extern int memcpy_real(void *, void *, size_t);
-extern void copy_to_absolute_zero(void *dest, void *src, size_t count);
-extern int copy_to_user_real(void __user *dest, void *src, size_t count);
-extern int copy_from_user_real(void *dest, void __user *src, size_t count);
-
-#define finish_arch_switch(prev) do { \
- set_fs(current->thread.mm_segment); \
- account_vtime(prev, current); \
-} while (0)
-
-#define nop() asm volatile("nop")
-
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- *
- * This is very similar to the ppc eieio/sync instruction in that is
- * does a checkpoint syncronisation & makes sure that
- * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ).
- */
-
-#define eieio() asm volatile("bcr 15,0" : : : "memory")
-#define SYNC_OTHER_CORES(x) eieio()
-#define mb() eieio()
-#define rmb() eieio()
-#define wmb() eieio()
-#define read_barrier_depends() do { } while(0)
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define smp_read_barrier_depends() read_barrier_depends()
-#define smp_mb__before_clear_bit() smp_mb()
-#define smp_mb__after_clear_bit() smp_mb()
-
-
-#define set_mb(var, value) do { var = value; mb(); } while (0)
-
-#ifdef __s390x__
-
-#define __ctl_load(array, low, high) ({ \
- typedef struct { char _[sizeof(array)]; } addrtype; \
- asm volatile( \
- " lctlg %1,%2,%0\n" \
- : : "Q" (*(addrtype *)(&array)), \
- "i" (low), "i" (high)); \
- })
-
-#define __ctl_store(array, low, high) ({ \
- typedef struct { char _[sizeof(array)]; } addrtype; \
- asm volatile( \
- " stctg %1,%2,%0\n" \
- : "=Q" (*(addrtype *)(&array)) \
- : "i" (low), "i" (high)); \
- })
-
-#else /* __s390x__ */
-
-#define __ctl_load(array, low, high) ({ \
- typedef struct { char _[sizeof(array)]; } addrtype; \
- asm volatile( \
- " lctl %1,%2,%0\n" \
- : : "Q" (*(addrtype *)(&array)), \
- "i" (low), "i" (high)); \
-})
-
-#define __ctl_store(array, low, high) ({ \
- typedef struct { char _[sizeof(array)]; } addrtype; \
- asm volatile( \
- " stctl %1,%2,%0\n" \
- : "=Q" (*(addrtype *)(&array)) \
- : "i" (low), "i" (high)); \
- })
-
-#endif /* __s390x__ */
-
-#define __ctl_set_bit(cr, bit) ({ \
- unsigned long __dummy; \
- __ctl_store(__dummy, cr, cr); \
- __dummy |= 1UL << (bit); \
- __ctl_load(__dummy, cr, cr); \
-})
-
-#define __ctl_clear_bit(cr, bit) ({ \
- unsigned long __dummy; \
- __ctl_store(__dummy, cr, cr); \
- __dummy &= ~(1UL << (bit)); \
- __ctl_load(__dummy, cr, cr); \
-})
-
-/*
- * Use to set psw mask except for the first byte which
- * won't be changed by this function.
- */
-static inline void
-__set_psw_mask(unsigned long mask)
-{
- __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8)));
-}
-
-#define local_mcck_enable() \
- __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK)
-#define local_mcck_disable() \
- __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT)
-
-#ifdef CONFIG_SMP
-
-extern void smp_ctl_set_bit(int cr, int bit);
-extern void smp_ctl_clear_bit(int cr, int bit);
-#define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit)
-#define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit)
-
-#else
-
-#define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit)
-#define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit)
-
-#endif /* CONFIG_SMP */
-
-#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */
-
-/*
- * The test_facility function uses the bit odering where the MSB is bit 0.
- * That makes it easier to query facility bits with the bit number as
- * documented in the Principles of Operation.
- */
-static inline int test_facility(unsigned long nr)
-{
- unsigned char *ptr;
-
- if (nr >= MAX_FACILITY_BIT)
- return 0;
- ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3);
- return (*ptr & (0x80 >> (nr & 7))) != 0;
-}
-
-/**
- * stfle - Store facility list extended
- * @stfle_fac_list: array where facility list can be stored
- * @size: size of passed in array in double words
- */
-static inline void stfle(u64 *stfle_fac_list, int size)
-{
- unsigned long nr;
-
- preempt_disable();
- S390_lowcore.stfl_fac_list = 0;
- asm volatile(
- " .insn s,0xb2b10000,0(0)\n" /* stfl */
- "0:\n"
- EX_TABLE(0b, 0b)
- : "=m" (S390_lowcore.stfl_fac_list));
- nr = 4; /* bytes stored by stfl */
- memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4);
- if (S390_lowcore.stfl_fac_list & 0x01000000) {
- /* More facility bits available with stfle */
- register unsigned long reg0 asm("0") = size - 1;
-
- asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */
- : "+d" (reg0)
- : "a" (stfle_fac_list)
- : "memory", "cc");
- nr = (reg0 + 1) * 8; /* # bytes stored by stfle */
- }
- memset((char *) stfle_fac_list + nr, 0, size * 8 - nr);
- preempt_enable();
-}
-
-static inline unsigned short stap(void)
-{
- unsigned short cpu_address;
-
- asm volatile("stap %0" : "=m" (cpu_address));
- return cpu_address;
-}
-
-extern void (*_machine_restart)(char *command);
-extern void (*_machine_halt)(void);
-extern void (*_machine_power_off)(void);
-
-extern unsigned long arch_align_stack(unsigned long sp);
-
-static inline int tprot(unsigned long addr)
-{
- int rc = -EFAULT;
-
- asm volatile(
- " tprot 0(%1),0\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "+d" (rc) : "a" (addr) : "cc");
- return rc;
-}
-
-#endif /* __KERNEL__ */
-
-#endif
+#include <asm/ctl_reg.h>
+#include <asm/exec.h>
+#include <asm/facility.h>
+#include <asm/switch_to.h>