1 /* $OpenBSD: vrtc.c,v 1.1 2008/03/08 19:19:43 kettenis Exp $ */ 2 /* 3 * Copyright (c) 2008 Mark Kettenis 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/device.h> 20 #include <sys/malloc.h> 21 #include <sys/systm.h> 22 23 #include <machine/autoconf.h> 24 #include <machine/hypervisor.h> 25 #include <machine/openfirm.h> 26 27 #include <dev/clock_subr.h> 28 #include <sparc64/dev/vbusvar.h> 29 30 extern todr_chip_handle_t todr_handle; 31 32 int vrtc_match(struct device *, void *, void *); 33 void vrtc_attach(struct device *, struct device *, void *); 34 35 struct cfattach vrtc_ca = { 36 sizeof(struct device), vrtc_match, vrtc_attach 37 }; 38 39 struct cfdriver vrtc_cd = { 40 NULL, "vrtc", DV_DULL 41 }; 42 43 int vrtc_gettime(todr_chip_handle_t, struct timeval *); 44 int vrtc_settime(todr_chip_handle_t, struct timeval *); 45 46 int 47 vrtc_match(struct device *parent, void *match, void *aux) 48 { 49 struct vbus_attach_args *va = aux; 50 51 if (strcmp(va->va_name, "rtc") == 0) 52 return (1); 53 54 return (0); 55 } 56 57 void 58 vrtc_attach(struct device *parent, struct device *self, void *aux) 59 { 60 todr_chip_handle_t handle; 61 62 printf("\n"); 63 64 handle = malloc(sizeof(struct todr_chip_handle), M_DEVBUF,M_NOWAIT); 65 if (handle == NULL) 66 panic("couldn't allocate todr_handle"); 67 68 handle->cookie = self; 69 handle->todr_gettime = vrtc_gettime; 70 handle->todr_settime = vrtc_settime; 71 72 handle->bus_cookie = NULL; 73 handle->todr_setwen = NULL; 74 todr_handle = handle; 75 } 76 77 int 78 vrtc_gettime(todr_chip_handle_t handle, struct timeval *tv) 79 { 80 u_int64_t tod; 81 82 if (hv_tod_get(&tod) != H_EOK) 83 return (1); 84 85 tv->tv_sec = tod; 86 tv->tv_usec = 0; 87 return (0); 88 } 89 90 int 91 vrtc_settime(todr_chip_handle_t handle, struct timeval *tv) 92 { 93 if (hv_tod_set(tv->tv_sec) != H_EOK) 94 return (1); 95 96 return (0); 97 } 98