File: [local] / sys / arch / sparc64 / dev / rtc.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:32 2008 UTC (16 years, 4 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: rtc.c,v 1.3 2007/04/24 18:30:45 kettenis Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1994 Gordon W. Ross
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1996 Paul Kranenburg
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Harvard University.
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* This product includes software developed by Paul Kranenburg.
* This product includes software developed by Harvard University.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*
* Driver for rtc device on Blade 1000, Fire V210, etc.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <dev/clock_subr.h>
#include <dev/ic/mc146818reg.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
extern todr_chip_handle_t todr_handle;
struct rtc_softc {
struct device sc_dv;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct intrhand *sc_ih;
};
int rtc_match(struct device *, void *, void *);
void rtc_attach(struct device *, struct device *, void *);
struct cfattach rtc_ca = {
sizeof(struct rtc_softc), rtc_match, rtc_attach
};
struct cfdriver rtc_cd = {
NULL, "rtc", DV_DULL
};
int rtc_intr(void *arg);
u_int8_t rtc_read_reg(struct rtc_softc *, bus_size_t);
void rtc_write_reg(struct rtc_softc *sc, bus_size_t, u_int8_t);
int rtc_gettime(todr_chip_handle_t, struct timeval *);
int rtc_settime(todr_chip_handle_t, struct timeval *);
int rtc_getcal(todr_chip_handle_t, int *);
int rtc_setcal(todr_chip_handle_t, int);
int
rtc_match(struct device *parent, void *cf, void *aux)
{
struct ebus_attach_args *ea = aux;
if (strcmp("rtc", ea->ea_name) == 0)
return (1);
return (0);
}
void
rtc_attach(struct device *parent, struct device *self, void *aux)
{
struct rtc_softc *sc = (void *)self;
struct ebus_attach_args *ea = aux;
todr_chip_handle_t handle;
char *model;
if (ebus_bus_map(ea->ea_iotag, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
sc->sc_iot = ea->ea_iotag;
} else if (ebus_bus_map(ea->ea_memtag, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
sc->sc_iot = ea->ea_memtag;
} else {
printf("%s: can't map register\n", self->dv_xname);
return;
}
model = getpropstring(ea->ea_node, "model");
#ifdef DIAGNOSTIC
if (model == NULL)
panic("rtc_attach: no model property");
#endif
printf(": %s\n", model);
/* Setup our todr_handle */
handle = malloc(sizeof(struct todr_chip_handle), M_DEVBUF, M_NOWAIT);
if (handle == NULL)
panic("couldn't allocate todr_handle");
handle->cookie = sc;
handle->todr_gettime = rtc_gettime;
handle->todr_settime = rtc_settime;
handle->todr_getcal = rtc_getcal;
handle->todr_setcal = rtc_setcal;
handle->bus_cookie = NULL;
handle->todr_setwen = NULL;
todr_handle = handle;
/*
* Turn interrupts off, just in case. (Although they shouldn't
* be wired to an interrupt controller on sparcs).
*/
rtc_write_reg(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
/*
* On ds1287 models (which really are ns87317 chips), the
* interrupt is wired to the powerbutton.
*/
if(strcmp(model, "ds1287") == 0 && ea->ea_nintrs > 0) {
sc->sc_ih = bus_intr_establish(sc->sc_iot, ea->ea_intrs[0],
IPL_BIO, 0, rtc_intr, sc, self->dv_xname);
if (sc->sc_ih == NULL) {
printf("%s: can't establush interrupt\n",
self->dv_xname);
}
}
}
int
rtc_intr(void *arg)
{
extern int kbd_reset;
if (kbd_reset == 1) {
kbd_reset = 0;
psignal(initproc, SIGUSR2);
}
return (1);
}
/*
* Register access is indirect, through an address and data port.
*/
#define RTC_ADDR 0
#define RTC_DATA 1
u_int8_t
rtc_read_reg(struct rtc_softc *sc, bus_size_t reg)
{
bus_space_write_1(sc->sc_iot, sc->sc_ioh, RTC_ADDR, reg);
return (bus_space_read_1(sc->sc_iot, sc->sc_ioh, RTC_DATA));
}
void
rtc_write_reg(struct rtc_softc *sc, bus_size_t reg, u_int8_t val)
{
bus_space_write_1(sc->sc_iot, sc->sc_ioh, RTC_ADDR, reg);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, RTC_DATA, val);
}
/*
* RTC todr routines.
*/
/*
* Get time-of-day and convert to a `struct timeval'
* Return 0 on success; an error number otherwise.
*/
int
rtc_gettime(todr_chip_handle_t handle, struct timeval *tv)
{
struct rtc_softc *sc = handle->cookie;
struct clock_ymdhms dt;
int year;
u_int8_t csr;
/* Stop updates. */
csr = rtc_read_reg(sc, MC_REGB);
csr |= MC_REGB_SET;
rtc_write_reg(sc, MC_REGB, csr);
/* Read time */
dt.dt_sec = rtc_read_reg(sc, MC_SEC);
dt.dt_min = rtc_read_reg(sc, MC_MIN);
dt.dt_hour = rtc_read_reg(sc, MC_HOUR);
dt.dt_day = rtc_read_reg(sc, MC_DOM);
dt.dt_wday = rtc_read_reg(sc, MC_DOW);
dt.dt_mon = rtc_read_reg(sc, MC_MONTH);
year = rtc_read_reg(sc, MC_YEAR);
if ((year += 1900) < POSIX_BASE_YEAR)
year += 100;
dt.dt_year = year;
/* time wears on */
csr = rtc_read_reg(sc, MC_REGB);
csr &= ~MC_REGB_SET;
rtc_write_reg(sc, MC_REGB, csr);
/* simple sanity checks */
if (dt.dt_mon > 12 || dt.dt_day > 31 ||
dt.dt_hour >= 24 || dt.dt_min >= 60 || dt.dt_sec >= 60)
return (1);
tv->tv_sec = clock_ymdhms_to_secs(&dt);
tv->tv_usec = 0;
return (0);
}
/*
* Set the time-of-day clock based on the value of the `struct timeval' arg.
* Return 0 on success; an error number otherwise.
*/
int
rtc_settime(todr_chip_handle_t handle, struct timeval *tv)
{
struct rtc_softc *sc = handle->cookie;
struct clock_ymdhms dt;
u_int8_t csr;
int year;
/* Note: we ignore `tv_usec' */
clock_secs_to_ymdhms(tv->tv_sec, &dt);
year = dt.dt_year % 100;
/* enable write */
csr = rtc_read_reg(sc, MC_REGB);
csr |= MC_REGB_SET;
rtc_write_reg(sc, MC_REGB, csr);
rtc_write_reg(sc, MC_SEC, dt.dt_sec);
rtc_write_reg(sc, MC_MIN, dt.dt_min);
rtc_write_reg(sc, MC_HOUR, dt.dt_hour);
rtc_write_reg(sc, MC_DOW, dt.dt_wday);
rtc_write_reg(sc, MC_DOM, dt.dt_day);
rtc_write_reg(sc, MC_MONTH, dt.dt_mon);
rtc_write_reg(sc, MC_YEAR, year);
/* load them up */
csr = rtc_read_reg(sc, MC_REGB);
csr &= ~MC_REGB_SET;
rtc_write_reg(sc, MC_REGB, csr);
return (0);
}
int
rtc_getcal(todr_chip_handle_t handle, int *vp)
{
return (EOPNOTSUPP);
}
int
rtc_setcal(todr_chip_handle_t handle, int v)
{
return (EOPNOTSUPP);
}