1 /* $NetBSD: sbdio.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
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: sbdio.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $");
34
35 #define _EWS4800MIPS_BUS_DMA_PRIVATE
36
37 #include <sys/param.h>
38 #include <sys/bus.h>
39 #include <sys/device.h>
40 #include <sys/systm.h>
41
42 #include <mips/locore.h>
43
44 #include <machine/autoconf.h>
45 #include <machine/sbdvar.h>
46 #include <machine/sbdiovar.h>
47
48 #include "ioconf.h"
49
50 struct sbdio_softc {
51 device_t sc_dev;
52 struct ews4800mips_bus_space sc_bus_tag;
53 struct ews4800mips_bus_dma_tag sc_dma_tag;
54 };
55
56 static int sbdio_match(device_t, cfdata_t, void *);
57 static void sbdio_attach(device_t, device_t, void *);
58 static int sbdio_print(void *, const char *);
59
60 CFATTACH_DECL_NEW(sbdio, sizeof(struct sbdio_softc),
61 sbdio_match, sbdio_attach, NULL, NULL);
62
63 static int sbdio_found;
64
65 int
sbdio_match(device_t parent,cfdata_t cf,void * aux)66 sbdio_match(device_t parent, cfdata_t cf, void *aux)
67 {
68 struct mainbus_attach_args *ma = aux;
69
70 if (sbdio_found != 0)
71 return 0;
72
73 if (strcmp(ma->ma_name, sbdio_cd.cd_name) != 0)
74 return 0;
75
76 if (platform.sbdiodevs == NULL)
77 return 0;
78
79 return 1;
80 }
81
82 void
sbdio_attach(device_t parent,device_t self,void * aux)83 sbdio_attach(device_t parent, device_t self, void *aux)
84 {
85 struct sbdio_softc *sc = device_private(self);
86 struct sbdio_attach_args sa;
87 const struct sbdiodevdesc *sd;
88
89 sbdio_found = 1;
90
91 sc->sc_dev = self;
92 aprint_normal("\n");
93
94 /* structure assignment */
95 sc->sc_dma_tag = ews4800mips_default_bus_dma_tag;
96
97 bus_space_create(&sc->sc_bus_tag, device_xname(sc->sc_dev),
98 MIPS_KSEG1_START, MIPS_KSEG2_START - MIPS_KSEG1_START); /* XXX */
99
100 for (sd = platform.sbdiodevs; sd->sd_name != NULL; sd++) {
101 sa.sa_name = sd->sd_name;
102 sa.sa_bust = &sc->sc_bus_tag;
103 sa.sa_dmat = &sc->sc_dma_tag;
104 sa.sa_addr1 = sd->sd_addr1;
105 sa.sa_addr2 = sd->sd_addr2;
106 sa.sa_irq = sd->sd_irq;
107 sa.sa_flags = sd->sd_flags;
108 config_found(self, &sa, sbdio_print, CFARGS_NONE);
109 }
110 }
111
112 int
sbdio_print(void * aux,const char * pnp)113 sbdio_print(void *aux, const char *pnp)
114 {
115 struct sbdio_attach_args *sa = aux;
116
117 if (sa->sa_addr1 != (paddr_t)-1) {
118 aprint_normal(" at %#"PRIxPADDR, sa->sa_addr1);
119 if (sa->sa_addr2 != (paddr_t)-1)
120 aprint_normal(", %#"PRIxPADDR, sa->sa_addr2);
121 }
122 if (sa->sa_irq != -1)
123 aprint_normal(" irq %d", sa->sa_irq);
124
125 return pnp ? QUIET : UNCONF;
126 }
127