1 /* $NetBSD: ichlpcib_hpet.c,v 1.3 2011/07/01 18:22:08 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 Minoura Makoto and Matthew R. Green.
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 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: ichlpcib_hpet.c,v 1.3 2011/07/01 18:22:08 dyoung Exp $");
33
34 #include <sys/param.h>
35 #include <sys/bus.h>
36 #include <sys/device.h>
37 #include <sys/time.h>
38 #include <sys/timetc.h>
39
40 #include <dev/ic/hpetreg.h>
41 #include <dev/ic/hpetvar.h>
42 #include <dev/ic/i82801lpcreg.h>
43 #include <dev/ic/i82801lpcvar.h>
44
45 static int lpcib_hpet_match(device_t , cfdata_t , void *);
46 static void lpcib_hpet_attach(device_t, device_t, void *);
47 static int lpcib_hpet_detach(device_t, int);
48
49 CFATTACH_DECL_NEW(ichlpcib_hpet, sizeof(struct hpet_softc),
50 lpcib_hpet_match, lpcib_hpet_attach, lpcib_hpet_detach, NULL);
51
52 static int
lpcib_hpet_match(device_t parent,cfdata_t match,void * aux)53 lpcib_hpet_match(device_t parent, cfdata_t match, void *aux)
54 {
55 struct lpcib_hpet_attach_args *arg = aux;
56 bus_space_handle_t bh;
57 bus_space_tag_t bt;
58
59 bt = arg->hpet_mem_t;
60
61 if (bus_space_map(bt, arg->hpet_reg, HPET_WINDOW_SIZE, 0, &bh) != 0)
62 return 0;
63
64 bus_space_unmap(bt, bh, HPET_WINDOW_SIZE);
65
66 return 1;
67 }
68
69
70 static void
lpcib_hpet_attach(device_t parent,device_t self,void * aux)71 lpcib_hpet_attach(device_t parent, device_t self, void *aux)
72 {
73 struct hpet_softc *sc = device_private(self);
74 struct lpcib_hpet_attach_args *arg = aux;
75
76 sc->sc_mapped = false;
77 sc->sc_memt = arg->hpet_mem_t;
78 sc->sc_mems = HPET_WINDOW_SIZE;
79
80 if (bus_space_map(sc->sc_memt, arg->hpet_reg,
81 sc->sc_mems, 0, &sc->sc_memh) != 0) {
82 aprint_error(": failed to map mem space\n");
83 return;
84 }
85
86 aprint_naive("\n");
87 aprint_normal(": high precision event timer (mem 0x%08x-0x%08x)\n",
88 arg->hpet_reg, arg->hpet_reg + HPET_WINDOW_SIZE);
89
90 sc->sc_mapped = true;
91 hpet_attach_subr(self);
92 }
93
94 static int
lpcib_hpet_detach(device_t self,int flags)95 lpcib_hpet_detach(device_t self, int flags)
96 {
97 struct hpet_softc *sc = device_private(self);
98 int rv;
99
100 if (sc->sc_mapped != true)
101 return 0;
102
103 rv = hpet_detach(self, flags);
104
105 if (rv != 0)
106 return rv;
107
108 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_mems);
109
110 return 0;
111 }
112