1 /* $NetBSD: auxio_ebus.c,v 1.7 2023/12/20 05:33:58 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2000, 2001, 2015 Matthew R. Green
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 ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * 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
29 /*
30 * AUXIO registers support on the sbus & ebus2, used for the floppy driver
31 * and to control the system LED, for the BLINK option.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: auxio_ebus.c,v 1.7 2023/12/20 05:33:58 thorpej Exp $");
36
37 #include "opt_auxio.h"
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/callout.h>
43 #include <sys/errno.h>
44 #include <sys/device.h>
45
46 #include <machine/autoconf.h>
47 #include <machine/cpu.h>
48
49 #include <dev/ebus/ebusreg.h>
50 #include <dev/ebus/ebusvar.h>
51 #include <dev/sbus/sbusvar.h>
52 #include <sparc64/dev/auxioreg.h>
53 #include <sparc64/dev/auxiovar.h>
54
55 static int auxio_ebus_match(device_t, cfdata_t, void *);
56 static void auxio_ebus_attach(device_t, device_t, void *);
57
58 CFATTACH_DECL_NEW(auxio_ebus, sizeof(struct auxio_softc),
59 auxio_ebus_match, auxio_ebus_attach, NULL, NULL);
60
61 static int
auxio_ebus_match(device_t parent,cfdata_t cf,void * aux)62 auxio_ebus_match(device_t parent, cfdata_t cf, void *aux)
63 {
64 struct ebus_attach_args *ea = aux;
65
66 return (strcmp(AUXIO_ROM_NAME, ea->ea_name) == 0);
67 }
68
69 static void
auxio_ebus_attach(device_t parent,device_t self,void * aux)70 auxio_ebus_attach(device_t parent, device_t self, void *aux)
71 {
72 struct auxio_softc *sc = device_private(self);
73 struct ebus_attach_args *ea = aux;
74
75 sc->sc_dev = self;
76 sc->sc_tag = ea->ea_bustag;
77
78 if (ea->ea_nreg < 1) {
79 printf(": no registers??\n");
80 return;
81 }
82
83 sc->sc_flags = AUXIO_EBUS;
84 if (ea->ea_nreg != 5) {
85 printf(": not 5 (%d) registers, only setting led",
86 ea->ea_nreg);
87 sc->sc_flags |= AUXIO_LEDONLY;
88 } else if (ea->ea_nvaddr == 5) {
89 sparc_promaddr_to_handle(sc->sc_tag,
90 ea->ea_vaddr[1], &sc->sc_pci);
91 sparc_promaddr_to_handle(sc->sc_tag,
92 ea->ea_vaddr[2], &sc->sc_freq);
93 sparc_promaddr_to_handle(sc->sc_tag,
94 ea->ea_vaddr[3], &sc->sc_scsi);
95 sparc_promaddr_to_handle(sc->sc_tag,
96 ea->ea_vaddr[4], &sc->sc_temp);
97 } else {
98 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[1]),
99 ea->ea_reg[1].size, 0, &sc->sc_pci);
100 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[2]),
101 ea->ea_reg[2].size, 0, &sc->sc_freq);
102 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[3]),
103 ea->ea_reg[3].size, 0, &sc->sc_scsi);
104 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[4]),
105 ea->ea_reg[4].size, 0, &sc->sc_temp);
106 }
107
108 if (ea->ea_nvaddr > 0) {
109 sparc_promaddr_to_handle(sc->sc_tag,
110 ea->ea_vaddr[0], &sc->sc_led);
111 } else {
112 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
113 ea->ea_reg[0].size, 0, &sc->sc_led);
114 }
115
116 auxio_attach_common(sc);
117 }
118