1 /* $NetBSD: atppc_pnpbios.c,v 1.9 2011/07/01 18:14:15 dyoung 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 1.9 2011/07/01 18:14:15 dyoung 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
56 static int atppc_pnpbios_match(device_t, cfdata_t, void *);
57 static void atppc_pnpbios_attach(device_t, device_t, void *);
58
59 struct atppc_pnpbios_softc {
60 struct atppc_softc sc_atppc;
61
62 isa_chipset_tag_t sc_ic;
63 int sc_drq;
64 };
65
66 CFATTACH_DECL_NEW(atppc_pnpbios, sizeof(struct atppc_pnpbios_softc),
67 atppc_pnpbios_match, atppc_pnpbios_attach, NULL, NULL);
68
69 static int atppc_pnpbios_dma_start(struct atppc_softc *, void *, u_int,
70 uint8_t);
71 static int atppc_pnpbios_dma_finish(struct atppc_softc *);
72 static int atppc_pnpbios_dma_abort(struct atppc_softc *);
73 static int atppc_pnpbios_dma_malloc(device_t, void **, bus_addr_t *,
74 bus_size_t);
75 static 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 */
81 static int
atppc_pnpbios_match(device_t parent,cfdata_t match,void * aux)82 atppc_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
93 static void
atppc_pnpbios_attach(device_t parent,device_t self,void * aux)94 atppc_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 */
142 static int
atppc_pnpbios_dma_start(struct atppc_softc * lsc,void * buf,u_int nbytes,uint8_t mode)143 atppc_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 */
152 static int
atppc_pnpbios_dma_finish(struct atppc_softc * lsc)153 atppc_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 */
161 int
atppc_pnpbios_dma_abort(struct atppc_softc * lsc)162 atppc_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 */
170 int
atppc_pnpbios_dma_malloc(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)171 atppc_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() */
180 void
atppc_pnpbios_dma_free(device_t dev,void ** buf,bus_addr_t * bus_addr,bus_size_t size)181 atppc_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