1 /* $NetBSD: vrtc.c,v 1.3 2021/01/04 14:48:52 thorpej Exp $ */
2 /* $OpenBSD: vrtc.c,v 1.1 2008/03/08 19:19:43 kettenis Exp $ */
3 /*
4 * Copyright (c) 2008 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/kmem.h>
22 #include <sys/systm.h>
23
24 #include <machine/autoconf.h>
25 #include <machine/hypervisor.h>
26 #include <machine/openfirm.h>
27
28 #include <dev/clock_subr.h>
29 #include <sparc64/dev/vbusvar.h>
30
31 extern todr_chip_handle_t todr_handle;
32
33 int vrtc_match(device_t, cfdata_t, void *);
34 void vrtc_attach(device_t, device_t, void *);
35
36 CFATTACH_DECL_NEW(vrtc, sizeof(device_t),
37 vrtc_match, vrtc_attach, NULL, NULL);
38
39 int vrtc_gettime(todr_chip_handle_t, struct timeval *);
40 int vrtc_settime(todr_chip_handle_t, struct timeval *);
41
42 int
vrtc_match(device_t parent,cfdata_t match,void * aux)43 vrtc_match(device_t parent, cfdata_t match, void *aux)
44 {
45 struct vbus_attach_args *va = aux;
46
47 if (strcmp(va->va_name, "rtc") == 0)
48 return (1);
49
50 return (0);
51 }
52
53 void
vrtc_attach(device_t parent,device_t self,void * aux)54 vrtc_attach(device_t parent, device_t self, void *aux)
55 {
56 todr_chip_handle_t handle;
57
58 printf("\n");
59
60 handle = kmem_alloc(sizeof(struct todr_chip_handle), KM_SLEEP);
61 handle->cookie = self;
62 handle->todr_gettime = vrtc_gettime;
63 handle->todr_settime = vrtc_settime;
64
65 handle->bus_cookie = NULL;
66 handle->todr_setwen = NULL;
67
68 todr_attach(handle);
69 }
70
71 int
vrtc_gettime(todr_chip_handle_t handle,struct timeval * tv)72 vrtc_gettime(todr_chip_handle_t handle, struct timeval *tv)
73 {
74 u_int64_t tod;
75
76 if (hv_tod_get(&tod) != H_EOK)
77 return (1);
78
79 tv->tv_sec = tod;
80 tv->tv_usec = 0;
81 return (0);
82 }
83
84 int
vrtc_settime(todr_chip_handle_t handle,struct timeval * tv)85 vrtc_settime(todr_chip_handle_t handle, struct timeval *tv)
86 {
87 if (hv_tod_set(tv->tv_sec) != H_EOK)
88 return (1);
89
90 return (0);
91 }
92