mca_machdep.h revision 1.10 
1/*	$NetBSD: mca_machdep.h,v 1.10 2005/12/26 19:23:59 perry Exp $	*/
2
3/*
4 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
5 * Copyright (c) 1999 Scott D. Telford.  All rights reserved.
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 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef _I386_MCA_MACHDEP_H_
31#define _I386_MCA_MACHDEP_H_
32
33#include <machine/bus.h>
34
35/*
36 * i386-specific definitions for MCA autoconfiguration.
37 */
38
39extern struct x86_bus_dma_tag mca_bus_dma_tag;
40
41/* set to 1 if MCA bus is detected */
42extern int MCA_system;
43
44int	mca_nmi(void);
45
46/*
47 * Types provided to machine-independent MCA code.
48 */
49struct x86_mca_chipset {
50        void * /*struct mca_dma_state*/ ic_dmastate;
51};
52
53typedef struct x86_mca_chipset *mca_chipset_tag_t;
54typedef int mca_intr_handle_t;
55
56/*
57 * Functions provided to machine-independent MCA code.
58 */
59struct mcabus_attach_args;
60
61void	mca_attach_hook(struct device *, struct device *,
62		struct mcabus_attach_args *);
63int	mca_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_dmamap_t *, int);
64void	mca_dma_set_ioport(int dma, uint16_t port);
65const struct evcnt *mca_intr_evcnt(mca_chipset_tag_t, mca_intr_handle_t);
66void	*mca_intr_establish(mca_chipset_tag_t, mca_intr_handle_t,
67		int, int (*)(void *), void *);
68void	mca_intr_disestablish(mca_chipset_tag_t, void *);
69int	mca_conf_read(mca_chipset_tag_t, int, int);
70void	mca_conf_write(mca_chipset_tag_t, int, int, int);
71void	mca_busprobe(void);
72
73/*
74 * Flags for DMA. Avoid BUS_DMA_BUS1, we share dmamap routines with ISA and
75 * that flag is used for different purpose within _isa_dmamap_*().
76 */
77#define MCABUS_DMA_IOPORT		BUS_DMA_BUS2	/* io-port based DMA */
78#define	MCABUS_DMA_16BIT		BUS_DMA_BUS3	/* 16bit DMA */
79#define	_MCABUS_DMA_USEDMACTRL		BUS_DMA_BUS4	/* internal flag */
80
81/*
82 * These two are used to light disk busy LED on PS/2 during disk operations.
83 */
84void	mca_disk_busy(void);
85void	mca_disk_unbusy(void);
86
87/* MCA register addresses for IBM PS/2 */
88
89#define PS2_SYS_CTL_A		0x92	/* PS/2 System Control Port A */
90#define MCA_MB_SETUP_REG	0x94	/* Motherboard setup register */
91#define MCA_ADAP_SETUP_REG	0x96	/* Adapter setup register */
92#define MCA_POS_REG_BASE	0x100	/* POS registers base address */
93#define MCA_POS_REG_SIZE	8	/* POS registers window size */
94
95#define MCA_POS_REG(n)		(0x100+(n))	/* POS registers 0-7 */
96
97/* Adapter setup register bits */
98
99#define MCA_ADAP_SET		0x08	/* Adapter setup mode */
100#define MCA_ADAP_CHR		0x80	/* Adapter channel reset */
101
102#endif /* _I386_MCA_MACHDEP_H_ */
103