[linux-2.6-block.git] / include / asm-s390 / processor.h

/*
 *  include/asm-s390/processor.h
 *
 *  S390 version
 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
 *    Author(s): Hartmut Penner (hp@de.ibm.com),
 *               Martin Schwidefsky (schwidefsky@de.ibm.com)
 *
 *  Derived from "include/asm-i386/processor.h"
 *    Copyright (C) 1994, Linus Torvalds
 */

#ifndef __ASM_S390_PROCESSOR_H
#define __ASM_S390_PROCESSOR_H

#include <asm/ptrace.h>

#ifdef __KERNEL__
/*
 * Default implementation of macro that returns current
 * instruction pointer ("program counter").
 */
#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; })

/*
 *  CPU type and hardware bug flags. Kept separately for each CPU.
 *  Members of this structure are referenced in head.S, so think twice
 *  before touching them. [mj]
 */

typedef struct
{
        unsigned int version :  8;
        unsigned int ident   : 24;
        unsigned int machine : 16;
        unsigned int unused  : 16;
} __attribute__ ((packed)) cpuid_t;

static inline void get_cpu_id(cpuid_t *ptr)
{
	asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
}

struct cpuinfo_S390
{
        cpuid_t  cpu_id;
        __u16    cpu_addr;
        __u16    cpu_nr;
        unsigned long loops_per_jiffy;
        unsigned long *pgd_quick;
#ifdef __s390x__
        unsigned long *pmd_quick;
#endif /* __s390x__ */
        unsigned long *pte_quick;
        unsigned long pgtable_cache_sz;
};

extern void s390_adjust_jiffies(void);
extern void print_cpu_info(struct cpuinfo_S390 *);
extern int get_cpu_capability(unsigned int *);

/* Lazy FPU handling on uni-processor */
extern struct task_struct *last_task_used_math;

/*
 * User space process size: 2GB for 31 bit, 4TB for 64 bit.
 */
#ifndef __s390x__

# define TASK_SIZE		(0x80000000UL)
# define TASK_UNMAPPED_BASE	(TASK_SIZE / 2)
# define DEFAULT_TASK_SIZE	(0x80000000UL)

#else /* __s390x__ */

# define TASK_SIZE		(test_thread_flag(TIF_31BIT) ? \
					(0x80000000UL) : (0x40000000000UL))
# define TASK_UNMAPPED_BASE	(TASK_SIZE / 2)
# define DEFAULT_TASK_SIZE	(0x40000000000UL)

#endif /* __s390x__ */

#define HAVE_ARCH_PICK_MMAP_LAYOUT

typedef struct {
        __u32 ar4;
} mm_segment_t;

/*
 * Thread structure
 */
struct thread_struct {
	s390_fp_regs fp_regs;
	unsigned int  acrs[NUM_ACRS];
        unsigned long ksp;              /* kernel stack pointer             */
        unsigned long user_seg;         /* HSTD                             */
	mm_segment_t mm_segment;
        unsigned long prot_addr;        /* address of protection-excep.     */
        unsigned int error_code;        /* error-code of last prog-excep.   */
        unsigned int trap_no;
        per_struct per_info;
	/* Used to give failing instruction back to user for ieee exceptions */
	unsigned long ieee_instruction_pointer; 
        /* pfault_wait is used to block the process on a pfault event */
	unsigned long pfault_wait;
};

typedef struct thread_struct thread_struct;

/*
 * Stack layout of a C stack frame.
 */
#ifndef __PACK_STACK
struct stack_frame {
	unsigned long back_chain;
	unsigned long empty1[5];
	unsigned long gprs[10];
	unsigned int  empty2[8];
};
#else
struct stack_frame {
	unsigned long empty1[5];
	unsigned int  empty2[8];
	unsigned long gprs[10];
	unsigned long back_chain;
};
#endif

#define ARCH_MIN_TASKALIGN	8

#ifndef __s390x__
# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _SEGMENT_TABLE
#else /* __s390x__ */
# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _REGION_TABLE
#endif /* __s390x__ */

#define INIT_THREAD {{0,{{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},	       \
			    {0},{0},{0},{0},{0},{0}}},			       \
		     {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},	       \
		     sizeof(init_stack) + (unsigned long) &init_stack,	       \
		     __SWAPPER_PG_DIR,					       \
		     {0},						       \
		     0,0,0,						       \
		     (per_struct) {{{{0,}}},0,0,0,0,{{0,}}},		       \
		     0, 0						       \
} 

/*
 * Do necessary setup to start up a new thread.
 */
#ifndef __s390x__

#define start_thread(regs, new_psw, new_stackp) do {            \
	set_fs(USER_DS);					\
	regs->psw.mask	= psw_user_bits;			\
        regs->psw.addr  = new_psw | PSW_ADDR_AMODE;             \
        regs->gprs[15]  = new_stackp ;                          \
} while (0)

#else /* __s390x__ */

#define start_thread(regs, new_psw, new_stackp) do {            \
	set_fs(USER_DS);					\
	regs->psw.mask	= psw_user_bits;			\
        regs->psw.addr  = new_psw;                              \
        regs->gprs[15]  = new_stackp;                           \
} while (0)

#define start_thread31(regs, new_psw, new_stackp) do {          \
	set_fs(USER_DS);					\
	regs->psw.mask	= psw_user32_bits;			\
        regs->psw.addr  = new_psw;                              \
        regs->gprs[15]  = new_stackp;                           \
} while (0)

#endif /* __s390x__ */

/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;

/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);

/* Prepare to copy thread state - unlazy all lazy status */
#define prepare_to_copy(tsk)	do { } while (0)

/*
 * Return saved PC of a blocked thread.
 */
extern unsigned long thread_saved_pc(struct task_struct *t);

/*
 * Print register of task into buffer. Used in fs/proc/array.c.
 */
extern char *task_show_regs(struct task_struct *task, char *buffer);

extern void show_registers(struct pt_regs *regs);
extern void show_code(struct pt_regs *regs);
extern void show_trace(struct task_struct *task, unsigned long *sp);

unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *) \
        (task_stack_page(tsk) + THREAD_SIZE) - 1)
#define KSTK_EIP(tsk)	(task_pt_regs(tsk)->psw.addr)
#define KSTK_ESP(tsk)	(task_pt_regs(tsk)->gprs[15])

/*
 * Give up the time slice of the virtual PU.
 */
static inline void cpu_relax(void)
{
	if (MACHINE_HAS_DIAG44)
		asm volatile("diag 0,0,68");
	barrier();
}

/*
 * Set PSW to specified value.
 */
static inline void __load_psw(psw_t psw)
{
#ifndef __s390x__
	asm volatile("lpsw  0(%0)" : : "a" (&psw), "m" (psw) : "cc");
#else
	asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
#endif
}

/*
 * Set PSW mask to specified value, while leaving the
 * PSW addr pointing to the next instruction.
 */

static inline void __load_psw_mask (unsigned long mask)
{
	unsigned long addr;
	psw_t psw;

	psw.mask = mask;

#ifndef __s390x__
	asm volatile(
		"	basr	%0,0\n"
		"0:	ahi	%0,1f-0b\n"
		"	st	%0,4(%1)\n"
		"	lpsw	0(%1)\n"
		"1:"
		: "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
#else /* __s390x__ */
	asm volatile(
		"	larl	%0,1f\n"
		"	stg	%0,8(%1)\n"
		"	lpswe	0(%1)\n"
		"1:"
		: "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
#endif /* __s390x__ */
}
 
/*
 * Function to stop a processor until an interruption occurred
 */
static inline void enabled_wait(void)
{
	__load_psw_mask(PSW_BASE_BITS | PSW_MASK_IO | PSW_MASK_EXT |
			PSW_MASK_MCHECK | PSW_MASK_WAIT | PSW_DEFAULT_KEY);
}

/*
 * Function to drop a processor into disabled wait state
 */

static inline void disabled_wait(unsigned long code)
{
        unsigned long ctl_buf;
        psw_t dw_psw;

        dw_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT;
        dw_psw.addr = code;
        /* 
         * Store status and then load disabled wait psw,
         * the processor is dead afterwards
         */
#ifndef __s390x__
	asm volatile(
		"	stctl	0,0,0(%2)\n"
		"	ni	0(%2),0xef\n"	/* switch off protection */
		"	lctl	0,0,0(%2)\n"
		"	stpt	0xd8\n"		/* store timer */
		"	stckc	0xe0\n"		/* store clock comparator */
		"	stpx	0x108\n"	/* store prefix register */
		"	stam	0,15,0x120\n"	/* store access registers */
		"	std	0,0x160\n"	/* store f0 */
		"	std	2,0x168\n"	/* store f2 */
		"	std	4,0x170\n"	/* store f4 */
		"	std	6,0x178\n"	/* store f6 */
		"	stm	0,15,0x180\n"	/* store general registers */
		"	stctl	0,15,0x1c0\n"	/* store control registers */
		"	oi	0x1c0,0x10\n"	/* fake protection bit */
		"	lpsw	0(%1)"
		: "=m" (ctl_buf)
		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
#else /* __s390x__ */
	asm volatile(
		"	stctg	0,0,0(%2)\n"
		"	ni	4(%2),0xef\n"	/* switch off protection */
		"	lctlg	0,0,0(%2)\n"
		"	lghi	1,0x1000\n"
		"	stpt	0x328(1)\n"	/* store timer */
		"	stckc	0x330(1)\n"	/* store clock comparator */
		"	stpx	0x318(1)\n"	/* store prefix register */
		"	stam	0,15,0x340(1)\n"/* store access registers */
		"	stfpc	0x31c(1)\n"	/* store fpu control */
		"	std	0,0x200(1)\n"	/* store f0 */
		"	std	1,0x208(1)\n"	/* store f1 */
		"	std	2,0x210(1)\n"	/* store f2 */
		"	std	3,0x218(1)\n"	/* store f3 */
		"	std	4,0x220(1)\n"	/* store f4 */
		"	std	5,0x228(1)\n"	/* store f5 */
		"	std	6,0x230(1)\n"	/* store f6 */
		"	std	7,0x238(1)\n"	/* store f7 */
		"	std	8,0x240(1)\n"	/* store f8 */
		"	std	9,0x248(1)\n"	/* store f9 */
		"	std	10,0x250(1)\n"	/* store f10 */
		"	std	11,0x258(1)\n"	/* store f11 */
		"	std	12,0x260(1)\n"	/* store f12 */
		"	std	13,0x268(1)\n"	/* store f13 */
		"	std	14,0x270(1)\n"	/* store f14 */
		"	std	15,0x278(1)\n"	/* store f15 */
		"	stmg	0,15,0x280(1)\n"/* store general registers */
		"	stctg	0,15,0x380(1)\n"/* store control registers */
		"	oi	0x384(1),0x10\n"/* fake protection bit */
		"	lpswe	0(%1)"
		: "=m" (ctl_buf)
		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0");
#endif /* __s390x__ */
}

/*
 * Basic Machine Check/Program Check Handler.
 */

extern void s390_base_mcck_handler(void);
extern void s390_base_pgm_handler(void);
extern void s390_base_ext_handler(void);

extern void (*s390_base_mcck_handler_fn)(void);
extern void (*s390_base_pgm_handler_fn)(void);
extern void (*s390_base_ext_handler_fn)(void);

/*
 * CPU idle notifier chain.
 */
#define CPU_IDLE	0
#define CPU_NOT_IDLE	1

struct notifier_block;
int register_idle_notifier(struct notifier_block *nb);
int unregister_idle_notifier(struct notifier_block *nb);

#define ARCH_LOW_ADDRESS_LIMIT	0x7fffffffUL

#endif

/*
 * Helper macro for exception table entries
 */
#ifndef __s390x__
#define EX_TABLE(_fault,_target)			\
	".section __ex_table,\"a\"\n"			\
	"	.align 4\n"				\
	"	.long  " #_fault "," #_target "\n"	\
	".previous\n"
#else
#define EX_TABLE(_fault,_target)			\
	".section __ex_table,\"a\"\n"			\
	"	.align 8\n"				\
	"	.quad  " #_fault "," #_target "\n"	\
	".previous\n"
#endif

#endif                                 /* __ASM_S390_PROCESSOR_H           */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/asm-s390/processor.h
	3	*
	4	* S390 version
	5	* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
	6	* Author(s): Hartmut Penner (hp@de.ibm.com),
	7	* Martin Schwidefsky (schwidefsky@de.ibm.com)
	8	*
	9	* Derived from "include/asm-i386/processor.h"
	10	* Copyright (C) 1994, Linus Torvalds
	11	*/
	12
	13	#ifndef __ASM_S390_PROCESSOR_H
	14	#define __ASM_S390_PROCESSOR_H
	15
1da177e4 LT	16	#include <asm/ptrace.h>
	17
	18	#ifdef __KERNEL__
	19	/*
	20	* Default implementation of macro that returns current
	21	* instruction pointer ("program counter").
	22	*/
94c12cc7	23	#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; })
1da177e4 LT	24
	25	/*
	26	* CPU type and hardware bug flags. Kept separately for each CPU.
	27	* Members of this structure are referenced in head.S, so think twice
	28	* before touching them. [mj]
	29	*/
	30
	31	typedef struct
	32	{
	33	unsigned int version : 8;
	34	unsigned int ident : 24;
	35	unsigned int machine : 16;
	36	unsigned int unused : 16;
	37	} __attribute__ ((packed)) cpuid_t;
	38
72960a02 MH	39	static inline void get_cpu_id(cpuid_t *ptr)
	40	{
	41	asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
	42	}
	43
1da177e4 LT	44	struct cpuinfo_S390
	45	{
	46	cpuid_t cpu_id;
	47	__u16 cpu_addr;
	48	__u16 cpu_nr;
	49	unsigned long loops_per_jiffy;
	50	unsigned long *pgd_quick;
	51	#ifdef __s390x__
	52	unsigned long *pmd_quick;
	53	#endif /* __s390x__ */
	54	unsigned long *pte_quick;
	55	unsigned long pgtable_cache_sz;
	56	};
	57
31ee4b2f	58	extern void s390_adjust_jiffies(void);
1da177e4	59	extern void print_cpu_info(struct cpuinfo_S390 *);
2fc2d1e9	60	extern int get_cpu_capability(unsigned int *);
1da177e4 LT	61
	62	/* Lazy FPU handling on uni-processor */
	63	extern struct task_struct *last_task_used_math;
	64
	65	/*
	66	* User space process size: 2GB for 31 bit, 4TB for 64 bit.
	67	*/
	68	#ifndef __s390x__
	69
	70	# define TASK_SIZE (0x80000000UL)
	71	# define TASK_UNMAPPED_BASE (TASK_SIZE / 2)
	72	# define DEFAULT_TASK_SIZE (0x80000000UL)
	73
	74	#else /* __s390x__ */
	75
	76	# define TASK_SIZE (test_thread_flag(TIF_31BIT) ? \
	77	(0x80000000UL) : (0x40000000000UL))
	78	# define TASK_UNMAPPED_BASE (TASK_SIZE / 2)
	79	# define DEFAULT_TASK_SIZE (0x40000000000UL)
	80
	81	#endif /* __s390x__ */
	82
1da177e4 LT	83	#define HAVE_ARCH_PICK_MMAP_LAYOUT
	84
	85	typedef struct {
	86	__u32 ar4;
	87	} mm_segment_t;
	88
	89	/*
	90	* Thread structure
	91	*/
	92	struct thread_struct {
	93	s390_fp_regs fp_regs;
	94	unsigned int acrs[NUM_ACRS];
	95	unsigned long ksp; /* kernel stack pointer */
	96	unsigned long user_seg; /* HSTD */
	97	mm_segment_t mm_segment;
	98	unsigned long prot_addr; /* address of protection-excep. */
	99	unsigned int error_code; /* error-code of last prog-excep. */
	100	unsigned int trap_no;
	101	per_struct per_info;
	102	/* Used to give failing instruction back to user for ieee exceptions */
	103	unsigned long ieee_instruction_pointer;
	104	/* pfault_wait is used to block the process on a pfault event */
	105	unsigned long pfault_wait;
	106	};
	107
	108	typedef struct thread_struct thread_struct;
	109
	110	/*
	111	* Stack layout of a C stack frame.
	112	*/
	113	#ifndef __PACK_STACK
	114	struct stack_frame {
	115	unsigned long back_chain;
	116	unsigned long empty1[5];
	117	unsigned long gprs[10];
	118	unsigned int empty2[8];
	119	};
	120	#else
	121	struct stack_frame {
	122	unsigned long empty1[5];
	123	unsigned int empty2[8];
	124	unsigned long gprs[10];
	125	unsigned long back_chain;
	126	};
	127	#endif
	128
	129	#define ARCH_MIN_TASKALIGN 8
	130
	131	#ifndef __s390x__
	132	# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _SEGMENT_TABLE
	133	#else /* __s390x__ */
	134	# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _REGION_TABLE
	135	#endif /* __s390x__ */
	136
	137	#define INIT_THREAD {{0,{{0},{0},{0},{0},{0},{0},{0},{0},{0},{0}, \
	138	{0},{0},{0},{0},{0},{0}}}, \
	139	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, \
	140	sizeof(init_stack) + (unsigned long) &init_stack, \
	141	__SWAPPER_PG_DIR, \
	142	{0}, \
	143	0,0,0, \
	144	(per_struct) {{{{0,}}},0,0,0,0,{{0,}}}, \
	145	0, 0 \
	146	}
147
148	/*
149	* Do necessary setup to start up a new thread.
150	*/
151	#ifndef __s390x__
152
153	#define start_thread(regs, new_psw, new_stackp) do { \
9b241cc8	154	set_fs(USER_DS); \
c1821c2e	155	regs->psw.mask = psw_user_bits; \
1da177e4 LT	156	regs->psw.addr = new_psw \| PSW_ADDR_AMODE; \
	157	regs->gprs[15] = new_stackp ; \
	158	} while (0)
	159
	160	#else /* __s390x__ */
	161
	162	#define start_thread(regs, new_psw, new_stackp) do { \
9b241cc8	163	set_fs(USER_DS); \
c1821c2e	164	regs->psw.mask = psw_user_bits; \
1da177e4 LT	165	regs->psw.addr = new_psw; \
	166	regs->gprs[15] = new_stackp; \
	167	} while (0)
	168
	169	#define start_thread31(regs, new_psw, new_stackp) do { \
9b241cc8	170	set_fs(USER_DS); \
c1821c2e	171	regs->psw.mask = psw_user32_bits; \
1da177e4 LT	172	regs->psw.addr = new_psw; \
	173	regs->gprs[15] = new_stackp; \
	174	} while (0)
	175
	176	#endif /* __s390x__ */
	177
	178	/* Forward declaration, a strange C thing */
	179	struct task_struct;
	180	struct mm_struct;
	181
	182	/* Free all resources held by a thread. */
	183	extern void release_thread(struct task_struct *);
	184	extern int kernel_thread(int (fn)(void ), void * arg, unsigned long flags);
	185
	186	/* Prepare to copy thread state - unlazy all lazy status */
	187	#define prepare_to_copy(tsk) do { } while (0)
	188
	189	/*
	190	* Return saved PC of a blocked thread.
	191	*/
	192	extern unsigned long thread_saved_pc(struct task_struct *t);
	193
	194	/*
	195	* Print register of task into buffer. Used in fs/proc/array.c.
	196	*/
	197	extern char task_show_regs(struct task_struct task, char *buffer);
	198
	199	extern void show_registers(struct pt_regs *regs);
bb11e3bd	200	extern void show_code(struct pt_regs *regs);
1da177e4 LT	201	extern void show_trace(struct task_struct task, unsigned long sp);
	202
	203	unsigned long get_wchan(struct task_struct *p);
c7584fb6	204	#define task_pt_regs(tsk) ((struct pt_regs *) \
30af7120	205	(task_stack_page(tsk) + THREAD_SIZE) - 1)
c7584fb6 AV	206	#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr)
c7584fb6 AV	207	#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15])
1da177e4 LT	208
	209	/*
	210	* Give up the time slice of the virtual PU.
	211	*/
abdba61a HC	212	static inline void cpu_relax(void)
	213	{
	214	if (MACHINE_HAS_DIAG44)
c48e0913 HC	215	asm volatile("diag 0,0,68");
c48e0913 HC	216	barrier();
abdba61a	217	}
1da177e4	218
77fa2245 HC	219	/*
	220	* Set PSW to specified value.
	221	*/
	222	static inline void __load_psw(psw_t psw)
	223	{
	224	#ifndef __s390x__
94c12cc7	225	asm volatile("lpsw 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
77fa2245	226	#else
94c12cc7	227	asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
77fa2245 HC	228	#endif
	229	}
	230
1da177e4 LT	231	/*
	232	* Set PSW mask to specified value, while leaving the
	233	* PSW addr pointing to the next instruction.
	234	*/
	235
	236	static inline void __load_psw_mask (unsigned long mask)
	237	{
	238	unsigned long addr;
1da177e4	239	psw_t psw;
77fa2245	240
1da177e4 LT	241	psw.mask = mask;
	242
	243	#ifndef __s390x__
94c12cc7 MS	244	asm volatile(
	245	" basr %0,0\n"
	246	"0: ahi %0,1f-0b\n"
	247	" st %0,4(%1)\n"
	248	" lpsw 0(%1)\n"
1da177e4	249	"1:"
94c12cc7	250	: "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
1da177e4	251	#else /* __s390x__ */
94c12cc7 MS	252	asm volatile(
	253	" larl %0,1f\n"
	254	" stg %0,8(%1)\n"
	255	" lpswe 0(%1)\n"
1da177e4	256	"1:"
94c12cc7	257	: "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
1da177e4 LT	258	#endif /* __s390x__ */
	259	}
	260
	261	/*
	262	* Function to stop a processor until an interruption occurred
	263	*/
	264	static inline void enabled_wait(void)
	265	{
77fa2245 HC	266	__load_psw_mask(PSW_BASE_BITS \| PSW_MASK_IO \| PSW_MASK_EXT \|
77fa2245 HC	267	PSW_MASK_MCHECK \| PSW_MASK_WAIT \| PSW_DEFAULT_KEY);
1da177e4 LT	268	}
	269
	270	/*
	271	* Function to drop a processor into disabled wait state
	272	*/
	273
	274	static inline void disabled_wait(unsigned long code)
	275	{
1da177e4	276	unsigned long ctl_buf;
77fa2245	277	psw_t dw_psw;
1da177e4	278
77fa2245 HC	279	dw_psw.mask = PSW_BASE_BITS \| PSW_MASK_WAIT;
77fa2245 HC	280	dw_psw.addr = code;
1da177e4 LT	281	/*
	282	* Store status and then load disabled wait psw,
	283	* the processor is dead afterwards
	284	*/
	285	#ifndef __s390x__
94c12cc7 MS	286	asm volatile(
	287	" stctl 0,0,0(%2)\n"
	288	" ni 0(%2),0xef\n" /* switch off protection */
	289	" lctl 0,0,0(%2)\n"
	290	" stpt 0xd8\n" /* store timer */
	291	" stckc 0xe0\n" /* store clock comparator */
	292	" stpx 0x108\n" /* store prefix register */
	293	" stam 0,15,0x120\n" /* store access registers */
	294	" std 0,0x160\n" /* store f0 */
	295	" std 2,0x168\n" /* store f2 */
	296	" std 4,0x170\n" /* store f4 */
	297	" std 6,0x178\n" /* store f6 */
	298	" stm 0,15,0x180\n" /* store general registers */
	299	" stctl 0,15,0x1c0\n" /* store control registers */
	300	" oi 0x1c0,0x10\n" /* fake protection bit */
	301	" lpsw 0(%1)"
	302	: "=m" (ctl_buf)
	303	: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
1da177e4	304	#else /* __s390x__ */
94c12cc7 MS	305	asm volatile(
	306	" stctg 0,0,0(%2)\n"
	307	" ni 4(%2),0xef\n" /* switch off protection */
	308	" lctlg 0,0,0(%2)\n"
	309	" lghi 1,0x1000\n"
	310	" stpt 0x328(1)\n" /* store timer */
	311	" stckc 0x330(1)\n" /* store clock comparator */
	312	" stpx 0x318(1)\n" /* store prefix register */
	313	" stam 0,15,0x340(1)\n"/* store access registers */
	314	" stfpc 0x31c(1)\n" /* store fpu control */
	315	" std 0,0x200(1)\n" /* store f0 */
	316	" std 1,0x208(1)\n" /* store f1 */
	317	" std 2,0x210(1)\n" /* store f2 */
	318	" std 3,0x218(1)\n" /* store f3 */
	319	" std 4,0x220(1)\n" /* store f4 */
	320	" std 5,0x228(1)\n" /* store f5 */
	321	" std 6,0x230(1)\n" /* store f6 */
	322	" std 7,0x238(1)\n" /* store f7 */
	323	" std 8,0x240(1)\n" /* store f8 */
	324	" std 9,0x248(1)\n" /* store f9 */
	325	" std 10,0x250(1)\n" /* store f10 */
	326	" std 11,0x258(1)\n" /* store f11 */
	327	" std 12,0x260(1)\n" /* store f12 */
	328	" std 13,0x268(1)\n" /* store f13 */
	329	" std 14,0x270(1)\n" /* store f14 */
	330	" std 15,0x278(1)\n" /* store f15 */
	331	" stmg 0,15,0x280(1)\n"/* store general registers */
	332	" stctg 0,15,0x380(1)\n"/* store control registers */
	333	" oi 0x384(1),0x10\n"/* fake protection bit */
	334	" lpswe 0(%1)"
	335	: "=m" (ctl_buf)
	336	: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0");
1da177e4 LT	337	#endif /* __s390x__ */
	338	}
	339
ab14de6c HC	340	/*
	341	* Basic Machine Check/Program Check Handler.
	342	*/
	343
	344	extern void s390_base_mcck_handler(void);
	345	extern void s390_base_pgm_handler(void);
	346	extern void s390_base_ext_handler(void);
	347
	348	extern void (*s390_base_mcck_handler_fn)(void);
	349	extern void (*s390_base_pgm_handler_fn)(void);
	350	extern void (*s390_base_ext_handler_fn)(void);
	351
1da177e4 LT	352	/*
	353	* CPU idle notifier chain.
	354	*/
	355	#define CPU_IDLE 0
	356	#define CPU_NOT_IDLE 1
	357
	358	struct notifier_block;
	359	int register_idle_notifier(struct notifier_block *nb);
	360	int unregister_idle_notifier(struct notifier_block *nb);
	361
dfd54cbc HC	362	#define ARCH_LOW_ADDRESS_LIMIT 0x7fffffffUL
dfd54cbc HC	363
1da177e4 LT	364	#endif
1da177e4 LT	365
de1a3f1c MS	366	/*
	367	* Helper macro for exception table entries
	368	*/
	369	#ifndef __s390x__
	370	#define EX_TABLE(_fault,_target) \
	371	".section __ex_table,\"a\"\n" \
	372	" .align 4\n" \
	373	" .long " #_fault "," #_target "\n" \
	374	".previous\n"
	375	#else
	376	#define EX_TABLE(_fault,_target) \
	377	".section __ex_table,\"a\"\n" \
	378	" .align 8\n" \
	379	" .quad " #_fault "," #_target "\n" \
	380	".previous\n"
	381	#endif
	382
1da177e4	383	#endif /* __ASM_S390_PROCESSOR_H */