1 /* $NetBSD: atppc_pioc.c,v 1.7 2023/12/20 06:13:59 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001 Alcove - Nicolas Souchu
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * FreeBSD: src/sys/isa/ppc.c,v 1.26.2.5 2001/10/02 05:21:45 nsouch Exp
29 *
30 */
31
32 #include "opt_atppc.h"
33
34 #include <sys/param.h>
35 __KERNEL_RCSID(0, "$NetBSD: atppc_pioc.c,v 1.7 2023/12/20 06:13:59 thorpej Exp $");
36
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/device.h>
40 #include <sys/bus.h>
41
42 #include <machine/intr.h>
43
44 #include <arch/acorn32/mainbus/piocvar.h>
45
46 #include <dev/ic/atppcreg.h>
47 #include <dev/ic/atppcvar.h>
48
49 #include "locators.h"
50
51 /* Probe and attach functions for a atppc device on the PIOC. */
52 static int atppc_pioc_probe(device_t, cfdata_t, void *);
53 static void atppc_pioc_attach(device_t, device_t, void *);
54
55 CFATTACH_DECL_NEW(atppc_pioc, sizeof(struct atppc_softc), atppc_pioc_probe,
56 atppc_pioc_attach, NULL, NULL);
57
58 #define IO_LPTSIZE 8
59
60 /*
61 * Probe function: find parallel port controller on isa bus. Combined from
62 * lpt_isa_probe() in lpt.c and atppc_detect_port() from FreeBSD's ppc.c.
63 */
64 static int
atppc_pioc_probe(device_t parent,cfdata_t cf,void * aux)65 atppc_pioc_probe(device_t parent, cfdata_t cf, void *aux)
66 {
67 bus_space_handle_t ioh;
68 struct pioc_attach_args *pa = aux;
69 bus_space_tag_t iot = pa->pa_iot;
70 int addr = pa->pa_iobase + pa->pa_offset;
71 int rval = 0;
72
73 if (pa->pa_name && strcmp(pa->pa_name, "lpt") != 0)
74 return 0;
75
76 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) {
77 aprint_error_dev(parent, "(%s): io port unknown.\n", __func__);
78 } else if (bus_space_map(iot, addr, IO_LPTSIZE, 0, &ioh) == 0) {
79 if (atppc_detect_port(iot, ioh) == 0)
80 rval = 1;
81 else
82 aprint_error_dev(parent,
83 "(%s): unable to write/read I/O port.\n",
84 __func__);
85 bus_space_unmap(iot, ioh, IO_LPTSIZE);
86 } else {
87 aprint_error_dev(parent, "(%s): attempt to map bus space failed.\n",
88 __func__);
89 }
90
91 return rval;
92 }
93
94 /* Attach function: attach and configure parallel port controller on isa bus. */
95 static void
atppc_pioc_attach(device_t parent,device_t self,void * aux)96 atppc_pioc_attach(device_t parent, device_t self, void *aux)
97 {
98 struct atppc_softc *sc = device_private(self);
99 struct pioc_attach_args *pa = aux;
100 bus_addr_t iobase;
101
102 sc->sc_dev = self;
103 sc->sc_iot = pa->pa_iot;
104 sc->sc_has = 0;
105 iobase = pa->pa_iobase + pa->pa_offset;
106
107 if (bus_space_map(sc->sc_iot, iobase, IO_LPTSIZE, 0,
108 &sc->sc_ioh) != 0) {
109 aprint_error(": attempt to map bus space failed, device not "
110 "properly attached.\n");
111 sc->sc_dev_ok = ATPPC_NOATTACH;
112 return;
113 }
114 sc->sc_dev_ok = ATPPC_ATTACHED;
115
116 /* Assign interrupt handler */
117 if (!(device_cfdata(self)->cf_flags & ATPPC_FLAG_DISABLE_INTR)) {
118 if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT) {
119 /* Establish interrupt handler. */
120 sc->sc_ieh = intr_claim(pa->pa_irq, IPL_TTY, "atppc",
121 atppcintr, sc);
122 sc->sc_has |= ATPPC_HAS_INTR;
123 } else
124 ATPPC_DPRINTF(("%s: IRQ not assigned or bad number of "
125 "IRQs.\n", device_xname(self)));
126 } else
127 ATPPC_VPRINTF(("%s: interrupts not configured due to flags.\n",
128 device_xname(self)));
129
130 /* Run soft configuration attach */
131 atppc_sc_attach(sc);
132 }
133