[dragonfly.git] / sys / platform / pc32 / apic / apic_ipl.s

/*
 * Copyright (c) 2003,2004 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``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
 * COPYRIGHT HOLDERS OR CONTRIBUTORS 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.
 * 
 * Copyright (c) 1997, by Steve Passe,  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the developer 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 *
 * $FreeBSD: src/sys/i386/isa/apic_ipl.s,v 1.27.2.2 2000/09/30 02:49:35 ps Exp $
 * $DragonFly: src/sys/platform/pc32/apic/apic_ipl.s,v 1.17 2006/11/07 18:50:06 dillon Exp $
 */

#include "use_npx.h"

#include <machine/asmacros.h>
#include <machine/segments.h>
#include <machine/lock.h>
#include <machine/psl.h>
#include <machine/trap.h>

#include "apicreg.h"
#include "apic_ipl.h"
#include "assym.s"

#ifdef APIC_IO

	.text
	SUPERALIGN_TEXT

	/*
	 * Functions to enable and disable a hardware interrupt.  The
	 * IRQ number is passed as an argument.
	 */
ENTRY(APIC_INTRDIS)
	APIC_IMASK_LOCK			/* enter critical reg */
	movl	4(%esp),%eax
1:
	shll	$IOAPIC_IM_SZSHIFT, %eax
	orl	$IOAPIC_IM_FLAG_MASKED, CNAME(int_to_apicintpin) + IOAPIC_IM_FLAGS(%eax)
	movl	CNAME(int_to_apicintpin) + IOAPIC_IM_ADDR(%eax), %edx
	movl	CNAME(int_to_apicintpin) + IOAPIC_IM_ENTIDX(%eax), %ecx
	testl	%edx, %edx
	jz	2f
	movl	%ecx, (%edx)		/* target register index */
	orl	$IOART_INTMASK, IOAPIC_WINDOW(%edx)
					/* set intmask in target apic reg */
2:
	APIC_IMASK_UNLOCK		/* exit critical reg */
	ret

ENTRY(APIC_INTREN)
	APIC_IMASK_LOCK			/* enter critical reg */
	movl	4(%esp), %eax		/* mask into %eax */
1:
	shll	$IOAPIC_IM_SZSHIFT, %eax
	andl	$~IOAPIC_IM_FLAG_MASKED, CNAME(int_to_apicintpin) + IOAPIC_IM_FLAGS(%eax)
	movl	CNAME(int_to_apicintpin) + IOAPIC_IM_ADDR(%eax), %edx
	movl	CNAME(int_to_apicintpin) + IOAPIC_IM_ENTIDX(%eax), %ecx
	testl	%edx, %edx
	jz	2f
	movl	%ecx, (%edx)		/* write the target register index */
	andl	$~IOART_INTMASK, IOAPIC_WINDOW(%edx)
					/* clear mask bit */
2:	
	APIC_IMASK_UNLOCK		/* exit critical reg */
	ret

/******************************************************************************
 * 
 */

/*
 * u_int io_apic_write(int apic, int select);
 */
ENTRY(io_apic_read)
	movl	4(%esp), %ecx		/* APIC # */
	movl	ioapic, %eax
	movl	(%eax,%ecx,4), %edx	/* APIC base register address */
	movl	8(%esp), %eax		/* target register index */
	movl	%eax, (%edx)		/* write the target register index */
	movl	IOAPIC_WINDOW(%edx), %eax /* read the APIC register data */
	ret				/* %eax = register value */

/*
 * void io_apic_write(int apic, int select, int value);
 */
ENTRY(io_apic_write)
	movl	4(%esp), %ecx		/* APIC # */
	movl	ioapic, %eax
	movl	(%eax,%ecx,4), %edx	/* APIC base register address */
	movl	8(%esp), %eax		/* target register index */
	movl	%eax, (%edx)		/* write the target register index */
	movl	12(%esp), %eax		/* target register value */
	movl	%eax, IOAPIC_WINDOW(%edx) /* write the APIC register data */
	ret				/* %eax = void */

/*
 * Send an EOI to the local APIC.
 */
ENTRY(apic_eoi)
	movl	$0, lapic+0xb0
	ret

#endif
Commit	Line	Data
8c10bfcf MD	1	/*
	2	* Copyright (c) 2003,2004 The DragonFly Project. All rights reserved.
	3	*
	4	* This code is derived from software contributed to The DragonFly Project
	5	* by Matthew Dillon <dillon@backplane.com>
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	*
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in
	15	* the documentation and/or other materials provided with the
	16	* distribution.
	17	* 3. Neither the name of The DragonFly Project nor the names of its
	18	* contributors may be used to endorse or promote products derived
	19	* from this software without specific, prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	22	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	23	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	24	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	25	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	26	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	27	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	28	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	29	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	30	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	31	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*
8a8d5d85	34	* Copyright (c) 1997, by Steve Passe, All rights reserved.
984263bc MD	35	*
	36	* Redistribution and use in source and binary forms, with or without
	37	* modification, are permitted provided that the following conditions
	38	* are met:
	39	* 1. Redistributions of source code must retain the above copyright
	40	* notice, this list of conditions and the following disclaimer.
	41	* 2. The name of the developer may NOT be used to endorse or promote products
	42	* derived from this software without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*
	56	* $FreeBSD: src/sys/i386/isa/apic_ipl.s,v 1.27.2.2 2000/09/30 02:49:35 ps Exp $
a7231bde	57	* $DragonFly: src/sys/platform/pc32/apic/apic_ipl.s,v 1.17 2006/11/07 18:50:06 dillon Exp $
984263bc MD	58	*/
984263bc MD	59
06f5be02 MD	60	#include "use_npx.h"
	61
	62	#include <machine/asmacros.h>
	63	#include <machine/segments.h>
06f5be02 MD	64	#include <machine/lock.h>
	65	#include <machine/psl.h>
	66	#include <machine/trap.h>
06f5be02	67
bdc560a1 MD	68	#include "apicreg.h"
bdc560a1 MD	69	#include "apic_ipl.h"
06f5be02 MD	70	#include "assym.s"
	71
	72	#ifdef APIC_IO
bdc560a1	73
984263bc MD	74	.text
	75	SUPERALIGN_TEXT
	76
984263bc	77	/*
df308fcd MD	78	* Functions to enable and disable a hardware interrupt. The
df308fcd MD	79	* IRQ number is passed as an argument.
984263bc	80	*/
37e7efec	81	ENTRY(APIC_INTRDIS)
97359a5b	82	APIC_IMASK_LOCK /* enter critical reg */
8a8d5d85 MD	83	movl 4(%esp),%eax
8a8d5d85 MD	84	1:
3d911e0a	85	shll $IOAPIC_IM_SZSHIFT, %eax
ea689d1c	86	orl $IOAPIC_IM_FLAG_MASKED, CNAME(int_to_apicintpin) + IOAPIC_IM_FLAGS(%eax)
3d911e0a SZ	87	movl CNAME(int_to_apicintpin) + IOAPIC_IM_ADDR(%eax), %edx
3d911e0a SZ	88	movl CNAME(int_to_apicintpin) + IOAPIC_IM_ENTIDX(%eax), %ecx
984263bc	89	testl %edx, %edx
8a8d5d85 MD	90	jz 2f
8a8d5d85 MD	91	movl %ecx, (%edx) /* target register index */
d2dd4a9f SZ	92	orl $IOART_INTMASK, IOAPIC_WINDOW(%edx)
d2dd4a9f SZ	93	/* set intmask in target apic reg */
8a8d5d85	94	2:
97359a5b	95	APIC_IMASK_UNLOCK /* exit critical reg */
984263bc MD	96	ret
984263bc MD	97
37e7efec	98	ENTRY(APIC_INTREN)
97359a5b	99	APIC_IMASK_LOCK /* enter critical reg */
8a8d5d85 MD	100	movl 4(%esp), %eax /* mask into %eax */
8a8d5d85 MD	101	1:
3d911e0a	102	shll $IOAPIC_IM_SZSHIFT, %eax
ea689d1c	103	andl $~IOAPIC_IM_FLAG_MASKED, CNAME(int_to_apicintpin) + IOAPIC_IM_FLAGS(%eax)
3d911e0a SZ	104	movl CNAME(int_to_apicintpin) + IOAPIC_IM_ADDR(%eax), %edx
3d911e0a SZ	105	movl CNAME(int_to_apicintpin) + IOAPIC_IM_ENTIDX(%eax), %ecx
984263bc	106	testl %edx, %edx
8a8d5d85	107	jz 2f
984263bc	108	movl %ecx, (%edx) /* write the target register index */
d2dd4a9f SZ	109	andl $~IOART_INTMASK, IOAPIC_WINDOW(%edx)
d2dd4a9f SZ	110	/* clear mask bit */
8a8d5d85	111	2:
97359a5b	112	APIC_IMASK_UNLOCK /* exit critical reg */
984263bc MD	113	ret
984263bc MD	114
984263bc MD	115	/******************************************************************************
	116	*
	117	*/
	118
	119	/*
	120	* u_int io_apic_write(int apic, int select);
	121	*/
	122	ENTRY(io_apic_read)
	123	movl 4(%esp), %ecx /* APIC # */
2954c92f	124	movl ioapic, %eax
984263bc MD	125	movl (%eax,%ecx,4), %edx /* APIC base register address */
	126	movl 8(%esp), %eax /* target register index */
	127	movl %eax, (%edx) /* write the target register index */
d2dd4a9f	128	movl IOAPIC_WINDOW(%edx), %eax /* read the APIC register data */
984263bc MD	129	ret /* %eax = register value */
	130
	131	/*
	132	* void io_apic_write(int apic, int select, int value);
	133	*/
	134	ENTRY(io_apic_write)
	135	movl 4(%esp), %ecx /* APIC # */
2954c92f	136	movl ioapic, %eax
984263bc MD	137	movl (%eax,%ecx,4), %edx /* APIC base register address */
	138	movl 8(%esp), %eax /* target register index */
	139	movl %eax, (%edx) /* write the target register index */
	140	movl 12(%esp), %eax /* target register value */
d2dd4a9f	141	movl %eax, IOAPIC_WINDOW(%edx) /* write the APIC register data */
984263bc MD	142	ret /* %eax = void */
	143
	144	/*
	145	* Send an EOI to the local APIC.
	146	*/
	147	ENTRY(apic_eoi)
2954c92f	148	movl $0, lapic+0xb0
984263bc	149	ret
ef0fdad1	150
06f5be02	151	#endif