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add pre-probe step so that autoconfiguration does not print 'apm0 at 

mainbus0 not configured' message if configured but not present in the
BIOS
This commit is contained in:
jtk 1996-11-22 00:19:07 +00:00
parent ae805c5cbf
commit 73b960a308
3 changed files with 39 additions and 19 deletions
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51
sys/arch/i386/i386/apm.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: apm.c,v 1.17 1996/11/14 12:39:55 jtk Exp $ */
/* $NetBSD: apm.c,v 1.18 1996/11/22 00:19:07 jtk Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -399,7 +399,7 @@ struct apmregs *regs;
DPRINTF(("power status change\n"));
error = apm_get_powstat(&nregs);
/* only print if nobody is catching events. */
if (error == 0 && (sc->sc_flags & SCFLAG_OREAD) == 0)
if (error == 0 && (sc->sc_flags & (SCFLAG_OREAD|SCFLAG_OWRITE)) == 0)
apm_power_print(sc, &nregs);
apm_record_event(sc, regs->bx);
break;
@ -636,6 +636,39 @@ int apm_bogus_bios = 0;
#define I386_FLAGBITS "\020\017NT\014OVFL\0130UP\012IEN\011TF\010NF\007ZF\005AF\003PF\001CY"
int
apm_busprobe()
{
struct apmregs regs;
/* XXX the DPRINTF() conditional */
#if defined(DEBUG) || defined(APMDEBUG)
char bits[128];
#endif
regs.ax = APM_BIOS_FN(APM_INSTALLATION_CHECK);
regs.bx = APM_DEV_APM_BIOS;
regs.cx = regs.dx = regs.si = regs.di = regs.flags = 0;
bioscall(APM_SYSTEM_BIOS, &regs);
DPRINTF(("apm: bioscall return: %x %x %x %x %s %x %x\n",
regs.ax, regs.bx, regs.cx, regs.dx,
bitmask_snprintf(regs.flags, I386_FLAGBITS,
bits, sizeof(bits)), regs.si, regs.di));
if (regs.flags & PSL_C) {
DPRINTF(("apm: carry set means no APM bios\n"));
return 0; /* no carry -> not installed */
}
if (regs.bx != APM_INSTALL_SIGNATURE) {
DPRINTF(("apm: PM signature not found\n"));
return 0;
}
if ((regs.cx & APM_32BIT_SUPPORT) == 0) {
DPRINTF(("apm: no 32bit support\n"));
return 0;
}
return 1; /* OK to continue probe & complain if something fails */
}
int
apmprobe(parent, match, aux)
struct device *parent;
@ -664,20 +697,6 @@ apmprobe(parent, match, aux)
bitmask_snprintf(regs.flags, I386_FLAGBITS,
bits, sizeof(bits)), regs.si, regs.di));
if (regs.flags & PSL_C) {
DPRINTF(("apm: carry set means no APM bios\n"));
return 0; /* no carry -> not installed */
}
if (regs.bx != APM_INSTALL_SIGNATURE) {
DPRINTF(("apm: PM signature not found\n"));
return 0;
}
if ((regs.cx & APM_32BIT_SUPPORT) == 0) {
DPRINTF(("apm: no 32bit support\n"));
return 0;
}
apminfo.apm_detail = (u_int)regs.ax | ((u_int)regs.cx << 16);
/*

4
sys/arch/i386/i386/mainbus.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mainbus.c,v 1.14 1996/10/21 22:24:40 thorpej Exp $ */
/* $NetBSD: mainbus.c,v 1.15 1996/11/22 00:19:08 jtk Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
@ -127,7 +127,7 @@ mainbus_attach(parent, self, aux)
config_found(self, &mba.mba_iba, mainbus_print);
}
#if NAPM > 0
{
if (apm_busprobe()) {
mba.mba_aaa.aaa_busname = "apm";
config_found(self, &mba.mba_aaa, mainbus_print);
}

3
sys/arch/i386/include/apmvar.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: apmvar.h,v 1.4 1996/09/10 11:22:35 jtk Exp $ */
/* $NetBSD: apmvar.h,v 1.5 1996/11/22 00:19:09 jtk Exp $ */
/*
* Copyright (c) 1995 John T. Kohl
* All rights reserved.
@ -246,6 +246,7 @@ extern void apm_cpu_busy __P((void));
extern void apm_cpu_idle __P((void));
extern void apminit __P((void));
int apm_set_powstate __P((u_int devid, u_int powstate));
extern int apm_busprobe __P((void));
#endif /* _KERNEL */
#endif /* _LOCORE */
#endif /* __i386_apm_h__ */