[apple/xnu.git] / pexpert / i386 / pe_interrupt.c

/*
 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#include <pexpert/pexpert.h>
#include <pexpert/protos.h>
#include <machine/machine_routines.h>
#include <i386/lapic.h>
#include <sys/kdebug.h>


#if CONFIG_DTRACE && DEVELOPMENT
#include <mach/sdt.h>
#endif

void PE_incoming_interrupt(x86_saved_state_t *);


struct i386_interrupt_handler {
	IOInterruptHandler	handler;
	void			*nub;
	void			*target;
	void			*refCon;
};

typedef struct i386_interrupt_handler i386_interrupt_handler_t;

i386_interrupt_handler_t	PE_interrupt_handler;


void
PE_incoming_interrupt(x86_saved_state_t *state)
{
	i386_interrupt_handler_t	*vector;
	uint64_t			rip;
	int				interrupt;
	boolean_t			user_mode = FALSE;

        if (is_saved_state64(state) == TRUE) {
	        x86_saved_state64_t	*state64;

	        state64 = saved_state64(state);
		rip = state64->isf.rip;
		interrupt = state64->isf.trapno;
		user_mode = TRUE;
	} else {
		x86_saved_state32_t	*state32;

		state32 = saved_state32(state);
		if (state32->cs & 0x03)
			user_mode = TRUE;
		rip = state32->eip;
		interrupt = state32->trapno;
	}

	KERNEL_DEBUG_CONSTANT(
		MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
		interrupt, (unsigned int)rip, user_mode, 0, 0);

	vector = &PE_interrupt_handler;

#if CONFIG_DTRACE && DEVELOPMENT
            DTRACE_INT5(interrupt_start, void *, vector->nub, int, 0, 
                        void *, vector->target, IOInterruptHandler, vector->handler,
                        void *, vector->refCon);
#endif

	if (!lapic_interrupt(interrupt, state)) {
		vector->handler(vector->target, NULL, vector->nub, interrupt);
	}

#if CONFIG_DTRACE && DEVELOPMENT
            DTRACE_INT5(interrupt_complete, void *, vector->nub, int, 0, 
                        void *, vector->target, IOInterruptHandler, vector->handler,
                        void *, vector->refCon);
#endif

	KERNEL_DEBUG_CONSTANT(
		MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
	   0, 0, 0, 0, 0);
}

void PE_install_interrupt_handler(void *nub,
				  __unused int source,
				  void *target,
				  IOInterruptHandler handler,
				  void *refCon)
{
	i386_interrupt_handler_t	*vector;

	vector = &PE_interrupt_handler;

	/*vector->source = source; IGNORED */
	vector->handler = handler;
	vector->nub = nub;
	vector->target = target;
	vector->refCon = refCon;
}
Commit	Line	Data
1c79356b	1	/*
2d21ac55	2	* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	#include <pexpert/pexpert.h>
	29	#include <pexpert/protos.h>
	30	#include <machine/machine_routines.h>
593a1d5f	31	#include <i386/lapic.h>
9bccf70c	32	#include <sys/kdebug.h>
1c79356b	33
91447636	34
2d21ac55 A	35	#if CONFIG_DTRACE && DEVELOPMENT
	36	#include <mach/sdt.h>
	37	#endif
	38
0c530ab8	39	void PE_incoming_interrupt(x86_saved_state_t *);
91447636 A	40
91447636 A	41
1c79356b A	42	struct i386_interrupt_handler {
	43	IOInterruptHandler handler;
	44	void *nub;
	45	void *target;
	46	void *refCon;
	47	};
	48
	49	typedef struct i386_interrupt_handler i386_interrupt_handler_t;
	50
	51	i386_interrupt_handler_t PE_interrupt_handler;
	52
55e303ae A	53
55e303ae A	54
1c79356b	55	void
0c530ab8	56	PE_incoming_interrupt(x86_saved_state_t *state)
1c79356b	57	{
1c79356b	58	i386_interrupt_handler_t *vector;
0c530ab8 A	59	uint64_t rip;
	60	int interrupt;
	61	boolean_t user_mode = FALSE;
	62
	63	if (is_saved_state64(state) == TRUE) {
	64	x86_saved_state64_t *state64;
	65
	66	state64 = saved_state64(state);
	67	rip = state64->isf.rip;
	68	interrupt = state64->isf.trapno;
	69	user_mode = TRUE;
	70	} else {
2d21ac55	71	x86_saved_state32_t *state32;
0c530ab8	72
2d21ac55	73	state32 = saved_state32(state);
0c530ab8	74	if (state32->cs & 0x03)
2d21ac55	75	user_mode = TRUE;
0c530ab8 A	76	rip = state32->eip;
	77	interrupt = state32->trapno;
	78	}
1c79356b	79
0c530ab8 A	80	KERNEL_DEBUG_CONSTANT(
	81	MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) \| DBG_FUNC_START,
	82	interrupt, (unsigned int)rip, user_mode, 0, 0);
1c79356b	83
9bccf70c	84	vector = &PE_interrupt_handler;
55e303ae	85
2d21ac55 A	86	#if CONFIG_DTRACE && DEVELOPMENT
	87	DTRACE_INT5(interrupt_start, void *, vector->nub, int, 0,
	88	void *, vector->target, IOInterruptHandler, vector->handler,
	89	void *, vector->refCon);
	90	#endif
	91
91447636	92	if (!lapic_interrupt(interrupt, state)) {
0c530ab8	93	vector->handler(vector->target, NULL, vector->nub, interrupt);
55e303ae	94	}
9bccf70c	95
2d21ac55 A	96	#if CONFIG_DTRACE && DEVELOPMENT
	97	DTRACE_INT5(interrupt_complete, void *, vector->nub, int, 0,
	98	void *, vector->target, IOInterruptHandler, vector->handler,
	99	void *, vector->refCon);
	100	#endif
	101
0c530ab8 A	102	KERNEL_DEBUG_CONSTANT(
0c530ab8 A	103	MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) \| DBG_FUNC_END,
2d21ac55	104	0, 0, 0, 0, 0);
1c79356b A	105	}
1c79356b A	106
91447636 A	107	void PE_install_interrupt_handler(void *nub,
91447636 A	108	__unused int source,
1c79356b A	109	void *target,
	110	IOInterruptHandler handler,
	111	void *refCon)
	112	{
	113	i386_interrupt_handler_t *vector;
	114
	115	vector = &PE_interrupt_handler;
	116
	117	/vector->source = source; IGNORED /
	118	vector->handler = handler;
	119	vector->nub = nub;
	120	vector->target = target;
	121	vector->refCon = refCon;
	122	}