#ifndef _ASM_IA64_SAL_H
#define _ASM_IA64_SAL_H

/*
 * System Abstraction Layer definitions.
 *
 * This is based on version 2.5 of the manual "IA-64 System
 * Abstraction Layer".
 *
 * Copyright (C) 2001 Intel
 * Copyright (C) 2002 Jenna Hall <jenna.s.hall@intel.com>
 * Copyright (C) 2001 Fred Lewis <frederick.v.lewis@intel.com>
 * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 * Copyright (C) 1999 Srinivasa Prasad Thirumalachar <sprasad@sprasad.engr.sgi.com>
 *
 * 02/01/04 J. Hall Updated Error Record Structures to conform to July 2001
 *		    revision of the SAL spec.
 * 01/01/03 fvlewis Updated Error Record Structures to conform with Nov. 2000
 *                  revision of the SAL spec.
 * 99/09/29 davidm	Updated for SAL 2.6.
 * 00/03/29 cfleck      Updated SAL Error Logging info for processor (SAL 2.6)
 *                      (plus examples of platform error info structures from smariset @ Intel)
 */

#define IA64_SAL_PLATFORM_FEATURE_BUS_LOCK_BIT		0
#define IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT_BIT	1
#define IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT_BIT	2
#define IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT_BIT	 	3

#define IA64_SAL_PLATFORM_FEATURE_BUS_LOCK	  (1<<IA64_SAL_PLATFORM_FEATURE_BUS_LOCK_BIT)
#define IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT (1<<IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT_BIT)
#define IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT (1<<IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT_BIT)
#define IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT	  (1<<IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT_BIT)

#ifndef __ASSEMBLY__

#include <linux/bcd.h>
#include <linux/spinlock.h>
#include <linux/efi.h>

#include <asm/pal.h>
#include <asm/fpu.h>

extern spinlock_t sal_lock;

/* SAL spec _requires_ eight args for each call. */
#define __IA64_FW_CALL(entry,result,a0,a1,a2,a3,a4,a5,a6,a7)	\
	result = (*entry)(a0,a1,a2,a3,a4,a5,a6,a7)

# define IA64_FW_CALL(entry,result,args...) do {		\
	unsigned long __ia64_sc_flags;				\
	struct ia64_fpreg __ia64_sc_fr[6];			\
	ia64_save_scratch_fpregs(__ia64_sc_fr);			\
	spin_lock_irqsave(&sal_lock, __ia64_sc_flags);		\
	__IA64_FW_CALL(entry, result, args);			\
	spin_unlock_irqrestore(&sal_lock, __ia64_sc_flags);	\
	ia64_load_scratch_fpregs(__ia64_sc_fr);			\
} while (0)

# define SAL_CALL(result,args...)			\
	IA64_FW_CALL(ia64_sal, result, args);

# define SAL_CALL_NOLOCK(result,args...) do {		\
	unsigned long __ia64_scn_flags;			\
	struct ia64_fpreg __ia64_scn_fr[6];		\
	ia64_save_scratch_fpregs(__ia64_scn_fr);	\
	local_irq_save(__ia64_scn_flags);		\
	__IA64_FW_CALL(ia64_sal, result, args);		\
	local_irq_restore(__ia64_scn_flags);		\
	ia64_load_scratch_fpregs(__ia64_scn_fr);	\
} while (0)

# define SAL_CALL_REENTRANT(result,args...) do {	\
	struct ia64_fpreg __ia64_scs_fr[6];		\
	ia64_save_scratch_fpregs(__ia64_scs_fr);	\
	preempt_disable();				\
	__IA64_FW_CALL(ia64_sal, result, args);		\