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vrtc.c revision 1.2 
      1 /*	$NetBSD: vrtc.c,v 1.2 2019/11/10 21:16:33 chs 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/malloc.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
     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
     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 = malloc(sizeof(struct todr_chip_handle), M_DEVBUF,M_WAITOK);
     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
     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
     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