NetBSD/sys/arch/hpcmips/tx/tx39power.c

323 lines
9.4 KiB
C

/* $NetBSD: tx39power.c,v 1.10 2002/01/29 18:53:17 uch Exp $ */
/*-
* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include "opt_tx39power_debug.h"
#define TX39POWERDEBUG
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/config_hook.h>
#include <hpcmips/tx/tx39var.h>
#include <hpcmips/tx/tx39icureg.h>
#include <hpcmips/tx/tx39powerreg.h>
#ifdef TX39POWER_DEBUG
#define DPRINTF_ENABLE
#define DPRINTF_DEBUG tx39power_debug
#endif
#include <machine/debug.h>
#ifdef TX39POWER_DEBUG
#define DUMP_REGS(x) __tx39power_dump(x)
#else
#define DUMP_REGS(x) ((void)0)
#endif
#define ISSET(x, v) ((x) & (v))
#define ISSETPRINT(r, m) dbg_bitmask_print(r, TX39_POWERCTRL_##m, #m)
int tx39power_match(struct device *, struct cfdata *, void *);
void tx39power_attach(struct device *, struct device *, void *);
struct tx39power_softc {
struct device sc_dev;
tx_chipset_tag_t sc_tc;
/* save interrupt status for resume */
txreg_t sc_icu_state[TX39_INTRSET_MAX + 1];
};
struct cfattach tx39power_ca = {
sizeof(struct tx39power_softc), tx39power_match, tx39power_attach
};
void tx39power_suspend_cpu(void); /* automatic hardware resume */
static int tx39power_intr_p(void *);
static int tx39power_intr_n(void *);
static int tx39power_ok_intr_p(void *);
static int tx39power_ok_intr_n(void *);
static int tx39power_button_intr_p(void *);
static int tx39power_button_intr_n(void *);
#ifdef TX39POWER_DEBUG
static void __tx39power_dump(struct tx39power_softc *);
#endif
int
tx39power_match(struct device *parent, struct cfdata *cf, void *aux)
{
return (ATTACH_FIRST);
}
void
tx39power_attach(struct device *parent, struct device *self, void *aux)
{
struct txsim_attach_args *ta = aux;
struct tx39power_softc *sc = (void*)self;
tx_chipset_tag_t tc;
txreg_t reg;
tc = sc->sc_tc = ta->ta_tc;
tx_conf_register_power(tc, self);
printf("\n");
DUMP_REGS(sc);
/* power button setting */
reg = tx_conf_read(tc, TX39_POWERCTRL_REG);
reg |= TX39_POWERCTRL_DBNCONBUTN;
tx_conf_write(tc, TX39_POWERCTRL_REG, reg);
/* enable stop timer */
reg = tx_conf_read(tc, TX39_POWERCTRL_REG);
reg &= ~(TX39_POWERCTRL_STPTIMERVAL_MASK <<
TX39_POWERCTRL_STPTIMERVAL_SHIFT);
reg = TX39_POWERCTRL_STPTIMERVAL_SET(reg,
TX39_POWERCTRL_STPTIMERVAL_MAX);
reg |= TX39_POWERCTRL_ENSTPTIMER;
tx_conf_write(tc, TX39_POWERCTRL_REG, reg);
/* install power event handler */
/* low priority */
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSPWRINT),
IST_EDGE, IPL_CLOCK,
tx39power_intr_p, sc);
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGPWRINT),
IST_EDGE, IPL_CLOCK,
tx39power_intr_n, sc);
/* high priority */
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSPWROKINT),
IST_EDGE, IPL_CLOCK,
tx39power_ok_intr_p, sc);
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGPWROKINT),
IST_EDGE, IPL_CLOCK,
tx39power_ok_intr_n, sc);
/* user driven event */
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSONBUTNINT),
IST_EDGE, IPL_CLOCK,
tx39power_button_intr_p, sc);
tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGONBUTNINT),
IST_EDGE, IPL_CLOCK,
tx39power_button_intr_n, sc);
}
void
tx39power_suspend_cpu() /* I assume already splhigh */
{
tx_chipset_tag_t tc = tx_conf_get_tag();
struct tx39power_softc *sc = tc->tc_powert;
txreg_t reg, *iregs = sc->sc_icu_state;
printf ("%s: CPU sleep\n", sc->sc_dev.dv_xname);
__asm__ __volatile__(".set noreorder");
reg = tx_conf_read(tc, TX39_POWERCTRL_REG);
reg |= TX39_POWERCTRL_STOPCPU;
/* save interrupt state */
iregs[0] = tx_conf_read(tc, TX39_INTRENABLE6_REG);
iregs[1] = tx_conf_read(tc, TX39_INTRENABLE1_REG);
iregs[2] = tx_conf_read(tc, TX39_INTRENABLE2_REG);
iregs[3] = tx_conf_read(tc, TX39_INTRENABLE3_REG);
iregs[4] = tx_conf_read(tc, TX39_INTRENABLE4_REG);
iregs[5] = tx_conf_read(tc, TX39_INTRENABLE5_REG);
#ifdef TX392X
iregs[7] = tx_conf_read(tc, TX39_INTRENABLE7_REG);
iregs[8] = tx_conf_read(tc, TX39_INTRENABLE8_REG);
#endif
/* disable all interrupt (don't disable GLOBALEN) */
tx_conf_write(tc, TX39_INTRENABLE6_REG, TX39_INTRENABLE6_GLOBALEN);
tx_conf_write(tc, TX39_INTRENABLE1_REG, 0);
tx_conf_write(tc, TX39_INTRENABLE2_REG, 0);
tx_conf_write(tc, TX39_INTRENABLE3_REG, 0);
tx_conf_write(tc, TX39_INTRENABLE4_REG, 0);
tx_conf_write(tc, TX39_INTRENABLE5_REG, 0);
#ifdef TX392X
tx_conf_write(tc, TX39_INTRENABLE7_REG, 0);
tx_conf_write(tc, TX39_INTRENABLE8_REG, 0);
#endif
/* enable power button interrupt only */
tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_NEGONBUTNINT);
tx_conf_write(tc, TX39_INTRENABLE5_REG, TX39_INTRSTATUS5_NEGONBUTNINT);
__asm__ __volatile__("sync");
/* stop CPU clock */
tx_conf_write(tc, TX39_POWERCTRL_REG, reg);
__asm__ __volatile__("sync");
/* wait until power button pressed */
/* clear interrupt */
tx_conf_write(tc, TX39_INTRCLEAR5_REG, TX39_INTRSTATUS5_NEGONBUTNINT);
#ifdef TX392X
/* Clear WARMSTART bit to reset vector(0xbfc00000) work correctly */
reg = tx_conf_read(tc, TX39_POWERCTRL_REG);
reg &= ~TX39_POWERCTRL_WARMSTART;
tx_conf_write(tc, TX39_POWERCTRL_REG, reg);
#endif
/* restore interrupt state */
tx_conf_write(tc, TX39_INTRENABLE6_REG, iregs[0]);
tx_conf_write(tc, TX39_INTRENABLE1_REG, iregs[1]);
tx_conf_write(tc, TX39_INTRENABLE2_REG, iregs[2]);
tx_conf_write(tc, TX39_INTRENABLE3_REG, iregs[3]);
tx_conf_write(tc, TX39_INTRENABLE4_REG, iregs[4]);
tx_conf_write(tc, TX39_INTRENABLE5_REG, iregs[5]);
#ifdef TX392X
tx_conf_write(tc, TX39_INTRENABLE7_REG, iregs[7]);
tx_conf_write(tc, TX39_INTRENABLE8_REG, iregs[8]);
#endif
__asm__ __volatile__(".set reorder");
printf ("%s: CPU wakeup\n", sc->sc_dev.dv_xname);
}
static int
tx39power_button_intr_p(void *arg)
{
config_hook_call(CONFIG_HOOK_BUTTONEVENT,
CONFIG_HOOK_BUTTONEVENT_POWER,
(void *)1 /* on */);
return (0);
}
static int
tx39power_button_intr_n(void *arg)
{
config_hook_call(CONFIG_HOOK_BUTTONEVENT,
CONFIG_HOOK_BUTTONEVENT_POWER,
(void *)0 /* off */);
DUMP_REGS(arg);
return (0);
}
int
tx39power_intr_p(void *arg)
{
/* low priority event */
printf("power_p\n");
DUMP_REGS(arg);
return (0);
}
static int
tx39power_intr_n(void *arg)
{
/* low priority event */
printf("power_n\n");
DUMP_REGS(arg);
return (0);
}
static int
tx39power_ok_intr_p(void *arg)
{
/* high priority event */
printf("power NG\n");
DUMP_REGS(arg);
config_hook_call(CONFIG_HOOK_PMEVENT,
CONFIG_HOOK_PMEVENT_SUSPENDREQ, NULL);
return (0);
}
static int
tx39power_ok_intr_n(void *arg)
{
/* high priority event */
printf("power OK\n");
DUMP_REGS(arg);
return (0);
}
#ifdef TX39POWER_DEBUG
static void
__tx39power_dump (struct tx39power_softc *sc)
{
tx_chipset_tag_t tc = sc->sc_tc;
txreg_t reg;
reg = tx_conf_read(tc, TX39_POWERCTRL_REG);
ISSETPRINT(reg, ONBUTN);
ISSETPRINT(reg, PWRINT);
ISSETPRINT(reg, PWROK);
#ifdef TX392X
ISSETPRINT(reg, PWROKNMI);
#endif /* TX392X */
ISSETPRINT(reg, SLOWBUS);
#ifdef TX391X
ISSETPRINT(reg, DIVMOD);
#endif /* TX391X */
ISSETPRINT(reg, ENSTPTIMER);
ISSETPRINT(reg, ENFORCESHUTDWN);
ISSETPRINT(reg, FORCESHUTDWN);
ISSETPRINT(reg, FORCESHUTDWNOCC);
ISSETPRINT(reg, SELC2MS);
#ifdef TX392X
ISSETPRINT(reg, WARMSTART);
#endif /* TX392X */
ISSETPRINT(reg, BPDBVCC3);
ISSETPRINT(reg, STOPCPU);
ISSETPRINT(reg, DBNCONBUTN);
ISSETPRINT(reg, COLDSTART);
ISSETPRINT(reg, PWRCS);
ISSETPRINT(reg, VCCON);
#ifdef TX391X
printf("VIDRF=%d ", TX39_POWERCTRL_VIDRF(reg));
#endif /* TX391X */
printf("STPTIMERVAL=%d ", TX39_POWERCTRL_STPTIMERVAL(reg));
printf("\n");
}
#endif /* TX39POWER_DEBUG */