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s390/fpu: split fpu-internal.h into fpu internals, api, and type headers 

Split the API and FPU type definitions into separate header files
similar to "x86/fpu: Rename fpu-internal.h to fpu/internal.h" (78f7f1e54b).

The new header files and their meaning are:

asm/fpu/types.h:
	FPU related data types, needed for 'struct thread_struct' and
	'struct task_struct'.

asm/fpu/api.h:
	FPU related 'public' functions for other subsystems and device
	drivers.

asm/fpu/internal.h:
	FPU internal functions mainly used to convert
	FPU register contents in signal handling.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Hendrik Brueckner 2015-10-06 12:25:59 +02:00 committed by Martin Schwidefsky
parent 6933c35a30
commit b0753902d4
9 changed files with 64 additions and 42 deletions
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30
arch/s390/include/asm/fpu/api.h Normal file
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@ -0,0 +1,30 @@
/*
* In-kernel FPU support functions
*
* Copyright IBM Corp. 2015
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
#ifndef _ASM_S390_FPU_API_H
#define _ASM_S390_FPU_API_H
void save_fpu_regs(void);
static inline int test_fp_ctl(u32 fpc)
{
u32 orig_fpc;
int rc;
asm volatile(
" efpc %1\n"
" sfpc %2\n"
"0: sfpc %1\n"
" la %0,0\n"
"1:\n"
EX_TABLE(0b,1b)
: "=d" (rc), "=d" (orig_fpc)
: "d" (fpc), "0" (-EINVAL));
return rc;
}
#endif /* _ASM_S390_FPU_API_H */

37
arch/s390/include/asm/fpu-internal.h → arch/s390/include/asm/fpu/internal.h
View File

@ -1,5 +1,5 @@
/*
* General floating pointer and vector register helpers
* FPU state and register content conversion primitives
*
* Copyright IBM Corp. 2015
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
@ -8,42 +8,9 @@
#ifndef _ASM_S390_FPU_INTERNAL_H
#define _ASM_S390_FPU_INTERNAL_H
#include <linux/errno.h>
#include <linux/string.h>
#include <asm/linkage.h>
#include <asm/ctl_reg.h>
#include <asm/sigcontext.h>
struct fpu {
__u32 fpc; /* Floating-point control */
union {
void *regs;
freg_t *fprs; /* Floating-point register save area */
__vector128 *vxrs; /* Vector register save area */
};
};
void save_fpu_regs(void);
/* VX array structure for address operand constraints in inline assemblies */
struct vx_array { __vector128 _[__NUM_VXRS]; };
static inline int test_fp_ctl(u32 fpc)
{
u32 orig_fpc;
int rc;
asm volatile(
" efpc %1\n"
" sfpc %2\n"
"0: sfpc %1\n"
" la %0,0\n"
"1:\n"
EX_TABLE(0b,1b)
: "=d" (rc), "=d" (orig_fpc)
: "d" (fpc), "0" (-EINVAL));
return rc;
}
#include <asm/fpu/types.h>
static inline void save_vx_regs_safe(__vector128 *vxrs)
{

25
arch/s390/include/asm/fpu/types.h Normal file
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@ -0,0 +1,25 @@
/*
* FPU data structures
*
* Copyright IBM Corp. 2015
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
#ifndef _ASM_S390_FPU_TYPES_H
#define _ASM_S390_FPU_TYPES_H
#include <asm/sigcontext.h>
struct fpu {
__u32 fpc; /* Floating-point control */
union {
void *regs;
freg_t *fprs; /* Floating-point register save area */
__vector128 *vxrs; /* Vector register save area */
};
};
/* VX array structure for address operand constraints in inline assemblies */
struct vx_array { __vector128 _[__NUM_VXRS]; };
#endif /* _ASM_S390_FPU_TYPES_H */

2
arch/s390/include/asm/kvm_host.h
View File

@ -22,7 +22,7 @@
#include <linux/kvm.h>
#include <asm/debug.h>
#include <asm/cpu.h>
#include <asm/fpu-internal.h>
#include <asm/fpu/api.h>
#include <asm/isc.h>
#define KVM_MAX_VCPUS 64

5
arch/s390/include/asm/processor.h
View File

@ -16,7 +16,7 @@
#define CIF_MCCK_PENDING 0 /* machine check handling is pending */
#define CIF_ASCE 1 /* user asce needs fixup / uaccess */
#define CIF_NOHZ_DELAY 2 /* delay HZ disable for a tick */
#define CIF_FPU 3 /* restore vector registers */
#define CIF_FPU 3 /* restore FPU registers */
#define CIF_IGNORE_IRQ 4 /* ignore interrupt (for udelay) */
#define _CIF_MCCK_PENDING _BITUL(CIF_MCCK_PENDING)
@ -34,7 +34,8 @@
#include <asm/ptrace.h>
#include <asm/setup.h>
#include <asm/runtime_instr.h>
#include <asm/fpu-internal.h>
#include <asm/fpu/types.h>
#include <asm/fpu/internal.h>
static inline void set_cpu_flag(int flag)
{

2
arch/s390/include/asm/switch_to.h
View File

@ -8,7 +8,7 @@
#define __ASM_SWITCH_TO_H
#include <linux/thread_info.h>
#include <asm/fpu-internal.h>
#include <asm/fpu/api.h>
#include <asm/ptrace.h>
extern struct task_struct *__switch_to(void *, void *);

1
arch/s390/kernel/nmi.c
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@ -21,7 +21,6 @@
#include <asm/nmi.h>
#include <asm/crw.h>
#include <asm/switch_to.h>
#include <asm/fpu-internal.h>
#include <asm/ctl_reg.h>
struct mcck_struct {

2
arch/s390/kernel/s390_ksyms.c
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@ -1,6 +1,6 @@
#include <linux/module.h>
#include <linux/kvm_host.h>
#include <asm/fpu-internal.h>
#include <asm/fpu/api.h>
#include <asm/ftrace.h>
#ifdef CONFIG_FUNCTION_TRACER

2
arch/s390/kernel/traps.c
View File

@ -19,7 +19,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <asm/fpu-internal.h>
#include <asm/fpu/api.h>
#include "entry.h"
int show_unhandled_signals = 1;