1 /* $OpenBSD: gecko.c,v 1.1 2008/04/27 14:39:51 kettenis Exp $ */
2
3 /*
4 * Copyright (c) 2007 Mark Kettenis
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/param.h>
20 #include <sys/device.h>
21 #include <sys/kernel.h>
22 #include <sys/systm.h>
23
24 #include <machine/autoconf.h>
25 #include <sys/bus.h>
26 #include <machine/cpu.h>
27 #include <machine/iomod.h>
28 #include <machine/pdc.h>
29
30 #include <hppa/dev/cpudevs.h>
31
32 struct gecko_softc {
33 device_t sc_dv;
34
35 bus_space_tag_t sc_iot;
36 bus_space_handle_t sc_ioh;
37 };
38
39 int gecko_match(device_t, cfdata_t, void *);
40 void gecko_attach(device_t, device_t, void *);
41 static device_t gecko_callback(device_t, struct confargs *);
42
43 CFATTACH_DECL_NEW(gecko, sizeof(struct gecko_softc), gecko_match,
44 gecko_attach, NULL, NULL);
45
46 int
gecko_match(device_t parent,cfdata_t match,void * aux)47 gecko_match(device_t parent, cfdata_t match, void *aux)
48 {
49 struct confargs *ca = aux;
50
51 if (ca->ca_type.iodc_type != HPPA_TYPE_BCPORT ||
52 ca->ca_type.iodc_sv_model != HPPA_BCPORT_PORT)
53 return (0);
54
55 if (ca->ca_type.iodc_model == 0x50 &&
56 ca->ca_type.iodc_revision == 0x00)
57 return (1);
58
59 return (0);
60 }
61
62 void
gecko_attach(device_t parent,device_t self,void * aux)63 gecko_attach(device_t parent, device_t self, void *aux)
64 {
65 struct gecko_softc *sc = device_private(self);
66 struct confargs *ca = aux, nca;
67 volatile struct iomod *regs;
68
69 sc->sc_dv = self;
70 sc->sc_iot = ca->ca_iot;
71 if (bus_space_map(sc->sc_iot, ca->ca_hpa, IOMOD_HPASIZE, 0,
72 &sc->sc_ioh)) {
73 aprint_error(": can't map IO space\n");
74 return;
75 }
76 regs = bus_space_vaddr(ca->ca_iot, sc->sc_ioh);
77
78 aprint_verbose(": %x-%x", regs->io_io_low, regs->io_io_high);
79
80 aprint_normal("\n");
81
82 nca = *ca;
83 nca.ca_hpabase = regs->io_io_low;
84 nca.ca_nmodules = MAXMODBUS;
85
86 pdc_scanbus(self, &nca, gecko_callback);
87 }
88
89 static device_t
gecko_callback(device_t self,struct confargs * ca)90 gecko_callback(device_t self, struct confargs *ca)
91 {
92
93 return config_round(self, ca, mbprint,
94 CFARGS(.submatch = mbsubmatch));
95 }
96
97