Convert bebox to MI todr. As part of this, separate out the mc146818
clock handling. Originally reviewed with that committed as an MI driver in dev/isa, crazy MD versions of mcclock made that impossible. So for now I'm only handling it as an MD driver. Ok garbled@
This commit is contained in:
gdamore
parent
73f2f65977
commit
382a67e7e4
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@ -1,4 +1,4 @@
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# $NetBSD: GENERIC,v 1.101 2006/08/26 07:59:21 tsutsui Exp $
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# $NetBSD: GENERIC,v 1.102 2006/09/15 08:25:02 gdamore Exp $
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#
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# GENERIC machine description file
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#
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@ -22,7 +22,7 @@ include "arch/bebox/conf/std.bebox"
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options INCLUDE_CONFIG_FILE # embed config file in kernel binary
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#ident "GENERIC-$Revision: 1.101 $"
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#ident "GENERIC-$Revision: 1.102 $"
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maxusers 32
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@ -187,6 +187,8 @@ pcib* at pci? dev ? function ? # PCI-ISA bridges
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isa* at pcib? # ISA on PCI-ISA bridge
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mcclock0 at isa? port 0x70 # time-of-day clock
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#pc0 at isa? port 0x60 irq 1 # generic PC console device
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com0 at isa? port 0x3f8 irq 4 # standard PC serial ports
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@ -1,4 +1,4 @@
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# $NetBSD: INSTALL,v 1.37 2006/02/05 05:01:49 cube Exp $
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# $NetBSD: INSTALL,v 1.38 2006/09/15 08:25:02 gdamore Exp $
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#
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# First try for BEBOX config file
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#
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@ -107,6 +107,8 @@ isa* at pcib? # ISA on PCI-ISA bridge
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pc0 at isa? port 0x60 irq 1 # generic PC console device
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mcclock0 at isa? port 0x70 # generic time-of-day clock
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com0 at isa? port 0x3f8 irq 4 # standard PC serial ports
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com1 at isa? port 0x2f8 irq 3
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#com2 at isa? port 0x380 irq 16
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@ -1,4 +1,4 @@
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# $NetBSD: files.bebox,v 1.46 2005/12/11 12:17:03 christos Exp $
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# $NetBSD: files.bebox,v 1.47 2006/09/15 08:25:02 gdamore Exp $
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#
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# First try for bebox specific configuration info
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#
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@ -83,6 +83,10 @@ file arch/bebox/isa/isadma_machdep.c isa
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# PC clock
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file arch/bebox/isa/isaclock.c isa
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device mcclock: mc146818
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attach mcclock at isa with mcclock_isa
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file arch/bebox/isa/mcclock_isa.c mcclock_isa
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# attribute used to represent the "keyboard controller"
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# XXX should be a real device
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define pckbcport { [irq = -1], [port = -1] }
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@ -1,3 +1,5 @@
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/* $NetBSD: types.h,v 1.7 2006/09/03 13:51:23 bjh21 Exp $ */
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/* $NetBSD: types.h,v 1.8 2006/09/15 08:25:02 gdamore Exp $ */
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#include <powerpc/types.h>
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#define __HAVE_GENERIC_TODR
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@ -1,4 +1,4 @@
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/* $NetBSD: isaclock.c,v 1.13 2005/12/24 20:06:58 perry Exp $ */
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/* $NetBSD: isaclock.c,v 1.14 2006/09/15 08:25:02 gdamore Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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@ -121,7 +121,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: isaclock.c,v 1.13 2005/12/24 20:06:58 perry Exp $");
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__KERNEL_RCSID(0, "$NetBSD: isaclock.c,v 1.14 2006/09/15 08:25:02 gdamore Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -143,40 +143,6 @@ __KERNEL_RCSID(0, "$NetBSD: isaclock.c,v 1.13 2005/12/24 20:06:58 perry Exp $");
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void sysbeepstop __P((void *));
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void sysbeep __P((int, int));
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void rtcinit __P((void));
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int rtcget __P((mc_todregs *));
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void rtcput __P((mc_todregs *));
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static int yeartoday __P((int));
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int hexdectodec __P((int));
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int dectohexdec __P((int));
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inline u_int mc146818_read __P((void *, u_int));
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inline void mc146818_write __P((void *, u_int, u_int));
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#define SECMIN ((unsigned)60) /* seconds per minute */
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#define SECHOUR ((unsigned)(60*SECMIN)) /* seconds per hour */
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#define SECDAY ((unsigned)(24*SECHOUR)) /* seconds per day */
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#define SECYR ((unsigned)(365*SECDAY)) /* seconds per common year */
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inline u_int
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mc146818_read(sc, reg)
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void *sc; /* XXX use it? */
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u_int reg;
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{
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isa_outb(IO_RTC, (u_char)reg);
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return (isa_inb(IO_RTC+1));
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}
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inline void
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mc146818_write(sc, reg, datum)
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void *sc; /* XXX use it? */
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u_int reg, datum;
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{
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isa_outb(IO_RTC, reg);
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isa_outb(IO_RTC+1, datum);
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}
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static int beeping;
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@ -220,195 +186,3 @@ sysbeep(pitch, period)
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callout_reset(&sysbeep_ch, period, sysbeepstop, NULL);
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}
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void
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rtcinit()
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{
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static int first_rtcopen_ever = 1;
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if (!first_rtcopen_ever)
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return;
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first_rtcopen_ever = 0;
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mc146818_write(NULL, MC_REGA, /* XXX softc */
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MC_BASE_32_KHz | MC_RATE_1024_Hz);
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mc146818_write(NULL, MC_REGB, MC_REGB_24HR); /* XXX softc */
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}
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int
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rtcget(regs)
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mc_todregs *regs;
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{
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rtcinit();
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if ((mc146818_read(NULL, MC_REGD) & MC_REGD_VRT) == 0) /* XXX softc */
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return (-1);
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MC146818_GETTOD(NULL, regs); /* XXX softc */
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return (0);
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}
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void
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rtcput(regs)
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mc_todregs *regs;
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{
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rtcinit();
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MC146818_PUTTOD(NULL, regs); /* XXX softc */
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}
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static int month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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static int
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yeartoday(year)
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int year;
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{
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return ((year % 4) ? 365 : 366);
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}
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int
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hexdectodec(n)
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int n;
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{
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return (((n >> 4) & 0x0f) * 10 + (n & 0x0f));
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}
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int
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dectohexdec(n)
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int n;
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{
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return ((u_char)(((n / 10) << 4) & 0xf0) | ((n % 10) & 0x0f));
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}
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static int timeset;
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/*
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* Initialize the time of day register, based on the time base which is, e.g.
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* from a filesystem.
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*/
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void
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inittodr(base)
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time_t base;
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{
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mc_todregs rtclk;
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time_t n;
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int sec, mn, hr, dom, mon, yr;
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int i, days = 0;
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int s;
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/*
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* We mostly ignore the suggested time and go for the RTC clock time
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* stored in the CMOS RAM. If the time can't be obtained from the
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* CMOS, or if the time obtained from the CMOS is 5 or more years
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* less than the suggested time, we used the suggested time. (In
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* the latter case, it's likely that the CMOS battery has died.)
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*/
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if (base < 15*SECYR) { /* if before 1985, something's odd... */
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printf("WARNING: preposterous time in file system\n");
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/* read the system clock anyway */
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base = 17*SECYR + 186*SECDAY + SECDAY/2;
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}
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s = splclock();
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if (rtcget(&rtclk)) {
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splx(s);
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printf("WARNING: invalid time in clock chip\n");
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goto fstime;
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}
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splx(s);
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sec = hexdectodec(rtclk[MC_SEC]);
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mn = hexdectodec(rtclk[MC_MIN]);
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hr = hexdectodec(rtclk[MC_HOUR]);
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dom = hexdectodec(rtclk[MC_DOM]);
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mon = hexdectodec(rtclk[MC_MONTH]);
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yr = hexdectodec(rtclk[MC_YEAR]);
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yr = (yr < 70) ? yr+100 : yr;
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n = sec + 60 * mn + 3600 * hr;
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n += (dom - 1) * 3600 * 24;
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if (yeartoday(yr) == 366)
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month[1] = 29;
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for (i = mon - 2; i >= 0; i--)
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days += month[i];
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month[1] = 28;
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for (i = 70; i < yr; i++)
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days += yeartoday(i);
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n += days * 3600 * 24;
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n += rtc_offset * 60;
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if (base < n - 5*SECYR)
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printf("WARNING: file system time much less than clock time\n");
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else if (base > n + 5*SECYR) {
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printf("WARNING: clock time much less than file system time\n");
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printf("WARNING: using file system time\n");
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goto fstime;
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}
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timeset = 1;
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time.tv_sec = n;
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time.tv_usec = 0;
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return;
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fstime:
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timeset = 1;
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time.tv_sec = base;
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time.tv_usec = 0;
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printf("WARNING: CHECK AND RESET THE DATE!\n");
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}
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/*
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* Reset the clock.
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*/
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void
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resettodr()
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{
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mc_todregs rtclk;
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time_t n;
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int diff, i, j;
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int s;
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/*
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* We might have been called by boot() due to a crash early
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* on. Don't reset the clock chip in this case.
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*/
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if (!timeset)
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return;
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s = splclock();
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if (rtcget(&rtclk))
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memset(&rtclk, 0, sizeof(rtclk));
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splx(s);
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diff = rtc_offset * 60;
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n = (time.tv_sec - diff) % (3600 * 24); /* hrs+mins+secs */
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rtclk[MC_SEC] = dectohexdec(n % 60);
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n /= 60;
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rtclk[MC_MIN] = dectohexdec(n % 60);
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rtclk[MC_HOUR] = dectohexdec(n / 60);
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n = (time.tv_sec - diff) / (3600 * 24); /* days */
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rtclk[MC_DOW] = (n + 4) % 7; /* 1/1/70 is Thursday */
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for (j = 1970, i = yeartoday(j); n >= i; j++, i = yeartoday(j))
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n -= i;
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||||
rtclk[MC_YEAR] = dectohexdec(j - 1900);
|
||||
|
||||
if (i == 366)
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month[1] = 29;
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for (i = 0; n >= month[i]; i++)
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n -= month[i];
|
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month[1] = 28;
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rtclk[MC_MONTH] = dectohexdec(++i);
|
||||
|
||||
rtclk[MC_DOM] = dectohexdec(++n);
|
||||
|
||||
s = splclock();
|
||||
rtcput(&rtclk);
|
||||
splx(s);
|
||||
}
|
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|
|
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|||
|
|
@ -0,0 +1,247 @@
|
|||
/* $NetBSD: mcclock_isa.c,v 1.1 2006/09/15 08:25:02 gdamore Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* William Jolitz and Don Ahn.
|
||||
*
|
||||
* 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. 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.
|
||||
*
|
||||
* @(#)clock.c 7.2 (Berkeley) 5/12/91
|
||||
*/
|
||||
/*-
|
||||
* Copyright (c) 1993, 1994 Charles M. Hannum.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* William Jolitz and Don Ahn.
|
||||
*
|
||||
* 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.
|
||||
* 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.
|
||||
*
|
||||
* @(#)clock.c 7.2 (Berkeley) 5/12/91
|
||||
*/
|
||||
/*
|
||||
* Mach Operating System
|
||||
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission to use, copy, modify and distribute this software and its
|
||||
* documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
||||
* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
|
||||
*
|
||||
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
||||
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
||||
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
* Carnegie Mellon requests users of this software to return to
|
||||
*
|
||||
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||||
* School of Computer Science
|
||||
* Carnegie Mellon University
|
||||
* Pittsburgh PA 15213-3890
|
||||
*
|
||||
* any improvements or extensions that they make and grant Carnegie Mellon
|
||||
* the rights to redistribute these changes.
|
||||
*/
|
||||
/*
|
||||
Copyright 1988, 1989 by Intel Corporation, Santa Clara, California.
|
||||
|
||||
All Rights Reserved
|
||||
|
||||
Permission to use, copy, modify, and distribute this software and
|
||||
its documentation for any purpose and without fee is hereby
|
||||
granted, provided that the above copyright notice appears in all
|
||||
copies and that both the copyright notice and this permission notice
|
||||
appear in supporting documentation, and that the name of Intel
|
||||
not be used in advertising or publicity pertaining to distribution
|
||||
of the software without specific, written prior permission.
|
||||
|
||||
INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
|
||||
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
|
||||
IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
|
||||
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
||||
LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
|
||||
NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
||||
WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: mcclock_isa.c,v 1.1 2006/09/15 08:25:02 gdamore Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/time.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/clock_subr.h>
|
||||
#include <dev/isa/isareg.h>
|
||||
#include <dev/isa/isavar.h>
|
||||
#include <dev/ic/mc146818reg.h>
|
||||
#include <dev/ic/mc146818var.h>
|
||||
|
||||
/*
|
||||
* We only deal with the RTC portion of the mc146818 right now. Later
|
||||
* we might want to add support for the NVRAM portion, since it
|
||||
* appears that some systems use that.
|
||||
*/
|
||||
|
||||
static int mcclock_isa_probe(struct device *, struct cfdata *, void *);
|
||||
static void mcclock_isa_attach(struct device *, struct device *, void *);
|
||||
|
||||
CFATTACH_DECL(mcclock_isa, sizeof(struct mc146818_softc),
|
||||
mcclock_isa_probe, mcclock_isa_attach, NULL, NULL);
|
||||
|
||||
static unsigned
|
||||
mcclock_isa_read(struct mc146818_softc *sc, unsigned reg)
|
||||
{
|
||||
|
||||
bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg);
|
||||
return bus_space_read_1(sc->sc_bst, sc->sc_bsh, 1);
|
||||
}
|
||||
|
||||
static void
|
||||
mcclock_isa_write(struct mc146818_softc *sc, unsigned reg, unsigned datum)
|
||||
{
|
||||
|
||||
bus_space_write_1(sc->sc_bst, sc->sc_bsh, 0, reg);
|
||||
bus_space_write_1(sc->sc_bst, sc->sc_bsh, 1, datum);
|
||||
}
|
||||
|
||||
int
|
||||
mcclock_isa_probe(struct device *parent, struct cfdata *match, void *aux)
|
||||
{
|
||||
struct isa_attach_args *ia = aux;
|
||||
bus_space_handle_t ioh;
|
||||
|
||||
if (ia->ia_nio < 1)
|
||||
return 0;
|
||||
|
||||
if (ISA_DIRECT_CONFIG(ia))
|
||||
return 0;
|
||||
|
||||
if ((ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT) &&
|
||||
(ia->ia_io[0].ir_addr != IO_RTC))
|
||||
return 0;
|
||||
|
||||
if (ia->ia_niomem > 0 &&
|
||||
(ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
|
||||
return 0;
|
||||
|
||||
if (ia->ia_nirq > 0 &&
|
||||
(ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ))
|
||||
return 0;
|
||||
|
||||
if (ia->ia_ndrq > 0 &&
|
||||
(ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
|
||||
return 0;
|
||||
|
||||
if (bus_space_map(ia->ia_iot, IO_RTC, 2, 0, &ioh))
|
||||
return 0;
|
||||
bus_space_unmap(ia->ia_iot, ioh, 2);
|
||||
|
||||
ia->ia_io[0].ir_addr = IO_RTC;
|
||||
ia->ia_io[0].ir_size = 2;
|
||||
ia->ia_nio = 1;
|
||||
|
||||
ia->ia_niomem = 0;
|
||||
ia->ia_nirq = 0;
|
||||
ia->ia_ndrq = 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
void
|
||||
mcclock_isa_attach(struct device *parent, struct device *self, void *aux)
|
||||
{
|
||||
struct mc146818_softc *sc = (struct mc146818_softc *)self;
|
||||
struct isa_attach_args *ia = aux;
|
||||
|
||||
sc->sc_bst = ia->ia_iot;
|
||||
if (bus_space_map(sc->sc_bst, ia->ia_io[0].ir_addr,
|
||||
ia->ia_io[0].ir_size, 0, &sc->sc_bsh)) {
|
||||
printf(": can't map registers!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Select a 32KHz crystal, periodic interrupt every 1024 Hz.
|
||||
* XXX: We disable periodic interrupts, so why set a rate?
|
||||
*/
|
||||
mcclock_isa_write(sc, MC_REGA, MC_BASE_32_KHz | MC_RATE_1024_Hz);
|
||||
|
||||
/*
|
||||
* 24 Hour clock, no interrupts please.
|
||||
*/
|
||||
mcclock_isa_write(sc, MC_REGB, MC_REGB_24HR);
|
||||
|
||||
sc->sc_year0 = 1900;
|
||||
sc->sc_flag = 0;
|
||||
sc->sc_mcread = mcclock_isa_read;
|
||||
sc->sc_mcwrite = mcclock_isa_write;
|
||||
#if 0
|
||||
/*
|
||||
* XXX: perhaps on some systems we should manage the century byte?
|
||||
* For now we don't worry about it. (Ugly MD code.)
|
||||
*/
|
||||
sc->sc_getcent = mcclock_isa_getcent;
|
||||
sc->sc_setcent = mcclock_isa_setcent;
|
||||
#endif
|
||||
mc146818_attach(sc);
|
||||
printf("\n");
|
||||
|
||||
todr_attach(&sc->sc_handle);
|
||||
}
|
||||
Loading…
Reference in New Issue