uba_cmi.c revision 1.11 
1/*	$NetBSD: uba_cmi.c,v 1.11 2003/07/15 02:15:02 lukem 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/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: uba_cmi.c,v 1.11 2003/07/15 02:15:02 lukem Exp $");
42
43#include <sys/param.h>
44#include <sys/device.h>
45#include <sys/systm.h>
46
47#define	_VAX_BUS_DMA_PRIVATE
48#include <machine/bus.h>
49#include <machine/mtpr.h>
50#include <machine/nexus.h>
51#include <machine/cpu.h>
52#include <machine/sgmap.h>
53
54#include <dev/qbus/ubavar.h>
55
56#include <vax/uba/uba_common.h>
57
58#include "locators.h"
59
60/* Some CMI-specific defines */
61#define	UBASIZE		((UBAPAGES + UBAIOPAGES) * VAX_NBPG)
62#define UMEM750(i)     	(0xfc0000 - (i) * UBASIZE)
63#define	UIOPAGE(x)	(UMEM750(x) + (UBAPAGES * VAX_NBPG))
64
65/*
66 * The DW780 and DW750 are quite similar to their function from
67 * a programmers point of view. Differencies are number of BDP's
68 * and bus status/command registers, the latter are (partly) IPR's
69 * on 750.
70 */
71static	int	dw750_match(struct device *, struct cfdata *, void *);
72static	void	dw750_attach(struct device *, struct device *, void *);
73static	void	dw750_init(struct uba_softc*);
74#ifdef notyet
75static	void	dw750_purge(struct uba_softc *, int);
76#endif
77
78CFATTACH_DECL(uba_cmi, sizeof(struct uba_vsoftc),
79    dw750_match, dw750_attach, NULL, NULL);
80
81extern	struct vax_bus_space vax_mem_bus_space;
82
83int
84dw750_match(struct device *parent, struct cfdata *cf, void *aux)
85{
86	struct sbi_attach_args *sa = (struct sbi_attach_args *)aux;
87
88	if (cf->cf_loc[CMICF_TR] != sa->sa_nexnum &&
89	    cf->cf_loc[CMICF_TR] != CMICF_TR_DEFAULT)
90		return 0;
91	/*
92	 * The uba type is actually only telling where the uba
93	 * space is in nexus space.
94	 */
95	if ((sa->sa_type & ~3) != NEX_UBA0)
96		return 0;
97
98	return 1;
99}
100
101void
102dw750_attach(struct device *parent, struct device *self, void *aux)
103{
104	struct uba_vsoftc *sc = (void *)self;
105	struct sbi_attach_args *sa = aux;
106
107	printf(": DW750\n");
108	/*
109	 * Fill in bus specific data.
110	 */
111	sc->uv_sc.uh_ubainit = dw750_init;
112#ifdef notyet
113	sc->uv_sc.uh_ubapurge = dw750_purge;
114#endif
115	sc->uv_sc.uh_iot = &vax_mem_bus_space;
116	sc->uv_sc.uh_dmat = &sc->uv_dmat;
117	sc->uv_sc.uh_type = UBA_UBA;
118	sc->uv_sc.uh_nr = sa->sa_type == NEX_UBA1;
119
120	/*
121	 * Fill in variables used by the sgmap system.
122	 */
123	sc->uv_size = UBAPAGES * VAX_NBPG;
124	sc->uv_uba = (void *)sa->sa_ioh; /* Map registers is in adaptor */
125
126	uba_dma_init(sc);
127	uba_attach(&sc->uv_sc, UIOPAGE(sa->sa_type == NEX_UBA1));
128}
129
130void
131dw750_init(struct uba_softc *sc)
132{
133	mtpr(0, PR_IUR);
134	DELAY(500000);
135}
136
137#ifdef notyet
138void
139dw750_purge(struct uba_softc sc, int bdp)
140{
141	sc->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE | UBADPR_NXM | UBADPR_UCE;
142}
143#endif
144