Driver for virtual real-time clock on sun4v.

1 files changed, 97 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/vrtc.c b/sys/arch/sparc64/dev/vrtc.c
new file mode 100644
index 00000000000..a7816b98852
--- /dev/null
+++ b/sys/arch/sparc64/dev/vrtc.c
@@ -0,0 +1,97 @@
+/*	$OpenBSD: vrtc.c,v 1.1 2008/03/08 19:19:43 kettenis Exp $	*/
+/*
+ * Copyright (c) 2008 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/hypervisor.h>
+#include <machine/openfirm.h>
+
+#include <dev/clock_subr.h>
+#include <sparc64/dev/vbusvar.h>
+
+extern todr_chip_handle_t todr_handle;
+
+int	vrtc_match(struct device *, void *, void *);
+void	vrtc_attach(struct device *, struct device *, void *);
+
+struct cfattach vrtc_ca = {
+	sizeof(struct device), vrtc_match, vrtc_attach
+};
+
+struct cfdriver vrtc_cd = {
+	NULL, "vrtc", DV_DULL
+};
+
+int	vrtc_gettime(todr_chip_handle_t, struct timeval *);
+int	vrtc_settime(todr_chip_handle_t, struct timeval *);
+
+int
+vrtc_match(struct device *parent, void *match, void *aux)
+{
+	struct vbus_attach_args *va = aux;
+
+	if (strcmp(va->va_name, "rtc") == 0)
+		return (1);
+
+	return (0);
+}
+
+void
+vrtc_attach(struct device *parent, struct device *self, void *aux)
+{
+	todr_chip_handle_t handle;
+
+	printf("\n");
+
+	handle = malloc(sizeof(struct todr_chip_handle), M_DEVBUF,M_NOWAIT);
+	if (handle == NULL)
+		panic("couldn't allocate todr_handle");
+
+	handle->cookie = self;
+	handle->todr_gettime = vrtc_gettime;
+	handle->todr_settime = vrtc_settime;
+
+	handle->bus_cookie = NULL;
+	handle->todr_setwen = NULL;
+	todr_handle = handle;
+}
+
+int
+vrtc_gettime(todr_chip_handle_t handle, struct timeval *tv)
+{
+	u_int64_t tod;
+
+	if (hv_tod_get(&tod) != H_EOK)
+		return (1);
+
+	tv->tv_sec = tod;
+	tv->tv_usec = 0;
+	return (0);
+}
+
+int
+vrtc_settime(todr_chip_handle_t handle, struct timeval *tv)
+{
+	if (hv_tod_set(tv->tv_sec) != H_EOK)
+		return (1);
+
+	return (0);
+}