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/*

 * Copyright (C) 2005 Jakub Jermar

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup ia64interrupt

 * @{

 */

/** @file

 */

#ifndef KERN_ia64_INTERRUPT_H_

#define KERN_ia64_INTERRUPT_H_

#include <typedefs.h>

#include <arch/types.h>

#include <arch/register.h>

/** ia64 has 256 INRs. */

#define INR_COUNT	256

/*

 * We need to keep this just to compile.

 * We might eventually move interrupt/ stuff

 * to genarch.

 */

#define IVT_ITEMS       0

#define IVT_FIRST       0

/** External Interrupt vectors. */

#define INTERRUPT_TIMER		255

#define INTERRUPT_SPURIOUS	15

/** General Exception codes. */

#define GE_ILLEGALOP		0

#define GE_PRIVOP		1

#define GE_PRIVREG		2

#define GE_RESREGFLD		3

#define GE_DISBLDISTRAN		4

#define GE_ILLEGALDEP		8

#define EOI	0		/**< The actual value doesn't matter. */

struct istate {

	__r128 f2;

	__r128 f3;

	__r128 f4;

	__r128 f5;

	__r128 f6;

	__r128 f7;

	__r128 f8;

	__r128 f9;

	__r128 f10;

	__r128 f11;

	__r128 f12;

	__r128 f13;

	__r128 f14;

	__r128 f15;

	__r128 f16;

	__r128 f17;

	__r128 f18;

	__r128 f19;

	__r128 f20;

	__r128 f21;

	__r128 f22;

	__r128 f23;

	__r128 f24;

	__r128 f25;

	__r128 f26;

	__r128 f27;

	__r128 f28;

	__r128 f29;

	__r128 f30;

	__r128 f31;

	uintptr_t ar_bsp;

	uintptr_t ar_bspstore;

	uintptr_t ar_bspstore_new;

	uint64_t ar_rnat;

	uint64_t ar_ifs;

	uint64_t ar_pfs;

	uint64_t ar_rsc;

	uintptr_t cr_ifa;

	cr_isr_t cr_isr;

	uintptr_t cr_iipa;

	psr_t cr_ipsr;

	uintptr_t cr_iip;

	uint64_t pr;

	uintptr_t sp;

	/*

	 * The following variables are defined only for break_instruction handler. 

	 */

	uint64_t in0;

	uint64_t in1;

	uint64_t in2;

	uint64_t in3;

	uint64_t in4;

};

static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)

{

	istate->cr_iip = retaddr;

	istate->cr_ipsr.ri = 0;		/* return to instruction slot #0 */

}

static inline unative_t istate_get_pc(istate_t *istate)

{

	return istate->cr_iip;

}

static inline int istate_from_uspace(istate_t *istate)

{

	return (istate->cr_iip) < 0xe000000000000000ULL;

}

extern void *ivt;

extern void general_exception(uint64_t vector, istate_t *istate);

extern int break_instruction(uint64_t vector, istate_t *istate);

extern void universal_handler(uint64_t vector, istate_t *istate);

extern void nop_handler(uint64_t vector, istate_t *istate);

extern void external_interrupt(uint64_t vector, istate_t *istate);

extern void disabled_fp_register(uint64_t vector, istate_t *istate);

#endif

/** @}

 */