1/* $NetBSD: atppc_pnpbios.c,v 1.8 2008/04/28 20:23:25 martin Exp $ */
2
3/*-
4 * Copyright (c) 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: atppc_pnpbios.c,v 1.8 2008/04/28 20:23:25 martin Exp $");
34
35#include "opt_atppc.h"
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/errno.h>
40#include <sys/ioctl.h>
41#include <sys/syslog.h>
42#include <sys/device.h>
43#include <sys/proc.h>
44#include <sys/termios.h>
45
46#include <sys/bus.h>
47
48#include <dev/isa/isavar.h>
49#include <dev/isa/isadmavar.h>
50
51#include <i386/pnpbios/pnpbiosvar.h>
52
53#include <dev/ic/atppcvar.h>
54#include <dev/isa/atppc_isadma.h>
55
56static int	atppc_pnpbios_match(device_t, cfdata_t, void *);
57static void	atppc_pnpbios_attach(device_t, device_t, void *);
58
59struct atppc_pnpbios_softc {
60	struct atppc_softc sc_atppc;
61
62	isa_chipset_tag_t sc_ic;
63	int sc_drq;
64};
65
66CFATTACH_DECL_NEW(atppc_pnpbios, sizeof(struct atppc_pnpbios_softc),
67    atppc_pnpbios_match, atppc_pnpbios_attach, NULL, NULL);
68
69static int atppc_pnpbios_dma_start(struct atppc_softc *, void *, u_int,
70	uint8_t);
71static int atppc_pnpbios_dma_finish(struct atppc_softc *);
72static int atppc_pnpbios_dma_abort(struct atppc_softc *);
73static int atppc_pnpbios_dma_malloc(device_t, void **, bus_addr_t *,
74	bus_size_t);
75static void atppc_pnpbios_dma_free(device_t, void **, bus_addr_t *,
76	bus_size_t);
77
78/*
79 * atppc_pnpbios_match: autoconf(9) match routine
80 */
81static int
82atppc_pnpbios_match(device_t parent, cfdata_t match, void *aux)
83{
84	struct pnpbiosdev_attach_args *aa = aux;
85
86	if (strcmp(aa->idstr, "PNP0400") == 0
87	    || strcmp(aa->idstr, "PNP0401") == 0)
88		return (1);
89
90	return (0);
91}
92
93static void
94atppc_pnpbios_attach(device_t parent, device_t self, void *aux)
95{
96	struct atppc_softc *sc = device_private(self);
97	struct atppc_pnpbios_softc *asc = device_private(self);
98	struct pnpbiosdev_attach_args *aa = aux;
99
100	sc->sc_dev_ok = ATPPC_NOATTACH;
101
102	printf(": AT Parallel Port\n");
103
104	if (pnpbios_io_map(aa->pbt, aa->resc, 0, &sc->sc_iot, &sc->sc_ioh)) {
105		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
106		return;
107	}
108
109	/* find our DRQ */
110	if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &asc->sc_drq)) {
111		aprint_error_dev(sc->sc_dev, "unable to get DMA channel\n");
112		return;
113	}
114
115	pnpbios_print_devres(self, aa);
116
117	/* Attach */
118	sc->sc_dev = self;
119	sc->sc_has = 0;
120	asc->sc_ic = aa->ic;
121	sc->sc_dev_ok = ATPPC_ATTACHED;
122
123	sc->sc_ieh = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_TTY,
124					    atppcintr, sc);
125	sc->sc_has |= ATPPC_HAS_INTR;
126
127	/* setup DMA hooks */
128	if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
129		sc->sc_has |= ATPPC_HAS_DMA;
130		sc->sc_dma_start = atppc_pnpbios_dma_start;
131		sc->sc_dma_finish = atppc_pnpbios_dma_finish;
132		sc->sc_dma_abort = atppc_pnpbios_dma_abort;
133		sc->sc_dma_malloc = atppc_pnpbios_dma_malloc;
134		sc->sc_dma_free = atppc_pnpbios_dma_free;
135	}
136
137	/* Run soft configuration attach */
138	atppc_sc_attach(sc);
139}
140
141/* Start DMA operation over ISA bus */
142static int
143atppc_pnpbios_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
144	uint8_t mode)
145{
146	struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;
147
148	return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
149}
150
151/* Stop DMA operation over ISA bus */
152static int
153atppc_pnpbios_dma_finish(struct atppc_softc * lsc)
154{
155	struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;
156
157	return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
158}
159
160/* Abort DMA operation over ISA bus */
161int
162atppc_pnpbios_dma_abort(struct atppc_softc * lsc)
163{
164	struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;
165
166	return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
167}
168
169/* Allocate memory for DMA over ISA bus */
170int
171atppc_pnpbios_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
172	bus_size_t size)
173{
174	struct atppc_pnpbios_softc * sc = device_private(dev);
175
176	return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
177}
178
179/* Free memory allocated by atppc_isa_dma_malloc() */
180void
181atppc_pnpbios_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
182	bus_size_t size)
183{
184	struct atppc_pnpbios_softc * sc = device_private(dev);
185
186	return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
187}
188