uba_cmi.c revision 1.6 
1/*	$NetBSD: uba_cmi.c,v 1.6 2001/05/13 15:24:18 ragge Exp $	   */
2/*
3 * Copyright (c) 1996 Jonathan Stone.
4 * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
5 * Copyright (c) 1982, 1986 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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 the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	@(#)uba.c	7.10 (Berkeley) 12/16/90
37 *	@(#)autoconf.c	7.20 (Berkeley) 5/9/91
38 */
39
40#include <sys/param.h>
41#include <sys/device.h>
42#include <sys/systm.h>
43
44#define	_VAX_BUS_DMA_PRIVATE
45#include <machine/bus.h>
46#include <machine/mtpr.h>
47#include <machine/nexus.h>
48#include <machine/cpu.h>
49#include <machine/sgmap.h>
50
51#include <dev/qbus/ubavar.h>
52
53#include <vax/uba/uba_common.h>
54
55#include "locators.h"
56
57/* Some CMI-specific defines */
58#define	UBASIZE		((UBAPAGES + UBAIOPAGES) * VAX_NBPG)
59#define UMEM750(i)     	(0xfc0000 - (i) * UBASIZE)
60#define	UIOPAGE(x)	(UMEM750(x) + (UBAPAGES * VAX_NBPG))
61
62/*
63 * The DW780 and DW750 are quite similar to their function from
64 * a programmers point of view. Differencies are number of BDP's
65 * and bus status/command registers, the latter are (partly) IPR's
66 * on 750.
67 */
68static	int	dw750_match(struct device *, struct cfdata *, void *);
69static	void	dw750_attach(struct device *, struct device *, void *);
70static	void	dw750_init(struct uba_softc*);
71#ifdef notyet
72static	void	dw750_purge(struct uba_softc *, int);
73#endif
74
75struct	cfattach uba_cmi_ca = {
76	sizeof(struct uba_vsoftc), dw750_match, dw750_attach
77};
78
79extern	struct vax_bus_space vax_mem_bus_space;
80
81int
82dw750_match(struct device *parent, struct cfdata *cf, void *aux)
83{
84	struct sbi_attach_args *sa = (struct sbi_attach_args *)aux;
85
86	if (cf->cf_loc[CMICF_TR] != sa->sa_nexnum &&
87	    cf->cf_loc[CMICF_TR] != CMICF_TR_DEFAULT)
88		return 0;
89	/*
90	 * The uba type is actually only telling where the uba
91	 * space is in nexus space.
92	 */
93	if ((sa->sa_type & ~3) != NEX_UBA0)
94		return 0;
95
96	return 1;
97}
98
99void
100dw750_attach(struct device *parent, struct device *self, void *aux)
101{
102	struct uba_vsoftc *sc = (void *)self;
103	struct sbi_attach_args *sa = aux;
104
105	printf(": DW750\n");
106	/*
107	 * Fill in bus specific data.
108	 */
109	sc->uv_sc.uh_ubainit = dw750_init;
110#ifdef notyet
111	sc->uv_sc.uh_ubapurge = dw750_purge;
112#endif
113	sc->uv_sc.uh_iot = &vax_mem_bus_space;
114	sc->uv_sc.uh_dmat = &sc->uv_dmat;
115	sc->uv_sc.uh_type = UBA_UBA;
116
117	/*
118	 * Fill in variables used by the sgmap system.
119	 */
120	sc->uv_size = UBAPAGES * VAX_NBPG;
121	sc->uv_uba = (void *)sa->sa_ioh; /* Map registers is in adaptor */
122
123	uba_dma_init(sc);
124	uba_attach(&sc->uv_sc, UIOPAGE(sa->sa_type == NEX_UBA1));
125}
126
127void
128dw750_init(struct uba_softc *sc)
129{
130	mtpr(0, PR_IUR);
131	DELAY(500000);
132}
133
134#ifdef notyet
135void
136dw750_purge(struct uba_softc sc, int bdp)
137{
138	sc->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE | UBADPR_NXM | UBADPR_UCE;
139}
140#endif
141