NetBSD/sys/arch/vax/vsa/dz_ibus.c

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/* $NetBSD: dz_ibus.c,v 1.18 2000/06/05 00:09:20 matt Exp $ */
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/*
* Copyright (c) 1998 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* 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 at Ludd, University of
* Lule}, Sweden and its contributors.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <dev/cons.h>
#include <machine/mtpr.h>
#include <machine/sid.h>
#include <machine/uvax.h>
#include <machine/vsbus.h>
#include <machine/cpu.h>
#include <machine/scb.h>
#include <machine/../vax/gencons.h>
#include <dev/qbus/dzreg.h>
#include <dev/qbus/dzvar.h>
#include "ioconf.h"
#include "lkc.h"
static int dz_vsbus_match __P((struct device *, struct cfdata *, void *));
static void dz_vsbus_attach __P((struct device *, struct device *, void *));
static int dz_print __P((void *, const char *));
static vaddr_t dz_regs; /* Used for console */
struct cfattach dz_vsbus_ca = {
sizeof(struct dz_softc), dz_vsbus_match, dz_vsbus_attach
};
#define REG(name) short name; short X##name##X;
static volatile struct ss_dz {/* base address of DZ-controller: 0x200A0000 */
REG(csr); /* 00 Csr: control/status register */
REG(rbuf); /* 04 Rbuf/Lpr: receive buffer/line param reg. */
REG(tcr); /* 08 Tcr: transmit console register */
REG(tdr); /* 0C Msr/Tdr: modem status reg/transmit data reg */
REG(lpr0); /* 10 Lpr0: */
REG(lpr1); /* 14 Lpr0: */
REG(lpr2); /* 18 Lpr0: */
REG(lpr3); /* 1C Lpr0: */
} *dz;
#undef REG
cons_decl(dz);
int
dz_print(aux, name)
void *aux;
const char *name;
{
if (name)
printf ("lkc at %s", name);
return (UNCONF);
}
static int
dz_vsbus_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct vsbus_attach_args *va = aux;
struct ss_dz *dzP;
short i;
dzP = (struct ss_dz *)va->va_addr;
i = dzP->tcr;
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dzP->csr = DZ_CSR_MSE|DZ_CSR_TXIE;
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dzP->tcr = 0;
DELAY(1000);
dzP->tcr = 1;
DELAY(100000);
dzP->tcr = i;
/* If the device doesn't exist, no interrupt has been generated */
return 1;
}
static void
dz_vsbus_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct dz_softc *sc = (void *)self;
struct vsbus_attach_args *va = aux;
/*
* XXX - This is evil and ugly, but...
* due to the nature of how bus_space_* works on VAX, this will
* be perfectly good until everything is converted.
*/
sc->sc_ioh = dz_regs;
sc->sc_dr.dr_csr = 0;
sc->sc_dr.dr_rbuf = 4;
sc->sc_dr.dr_dtr = 9;
sc->sc_dr.dr_break = 13;
sc->sc_dr.dr_tbuf = 12;
sc->sc_dr.dr_tcr = 8;
sc->sc_dr.dr_dcd = 13;
sc->sc_dr.dr_ring = 13;
sc->sc_type = DZ_DZV;
sc->sc_dsr = 0x0f; /* XXX check if VS has modem ctrl bits */
scb_vecalloc(va->va_cvec, dzxint, sc, SCB_ISTACK, &sc->sc_tintrcnt);
scb_vecalloc(va->va_cvec - 4, dzrint, sc, SCB_ISTACK, &sc->sc_rintrcnt);
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printf("\n%s: 4 lines", self->dv_xname);
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dzattach(sc, NULL);
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if (((vax_confdata & 0x80) == 0) ||/* workstation, have lkc */
(vax_boardtype == VAX_BTYP_48))
if (cn_tab->cn_pri > CN_NORMAL) /* Passed cnsl detect */
config_found(self, 0, dz_print);
}
int
dzcngetc(dev)
dev_t dev;
{
int c = 0;
int mino = minor(dev);
u_short rbuf;
do {
while ((dz->csr & 0x80) == 0)
; /* Wait for char */
rbuf = dz->rbuf;
if (((rbuf >> 8) & 3) != mino)
continue;
c = rbuf & 0x7f;
} while (c == 17 || c == 19); /* ignore XON/XOFF */
if (c == 13)
c = 10;
return (c);
}
#define DZMAJOR 1
void
dzcnprobe(cndev)
struct consdev *cndev;
{
extern vaddr_t iospace;
int diagcons;
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paddr_t ioaddr = 0x200A0000;
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switch (vax_boardtype) {
case VAX_BTYP_410:
case VAX_BTYP_420:
case VAX_BTYP_43:
diagcons = (vax_confdata & 0x20 ? 3 : 0);
break;
case VAX_BTYP_46:
case VAX_BTYP_48:
diagcons = (vax_confdata & 0x100 ? 3 : 0);
break;
case VAX_BTYP_49:
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ioaddr = 0x25000000;
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diagcons = 3;
break;
default:
cndev->cn_pri = CN_DEAD;
return;
}
if (diagcons)
cndev->cn_pri = CN_REMOTE;
else
cndev->cn_pri = CN_NORMAL;
cndev->cn_dev = makedev(DZMAJOR, diagcons);
dz_regs = iospace;
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ioaccess(iospace, ioaddr, 1);
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}
void
dzcninit(cndev)
struct consdev *cndev;
{
dz = (void*)dz_regs;
dz->csr = 0; /* Disable scanning until initting is done */
dz->tcr = (1 << minor(cndev->cn_dev)); /* Turn on xmitter */
dz->csr = 0x20; /* Turn scanning back on */
}
void
dzcnputc(dev,ch)
dev_t dev;
int ch;
{
int timeout = 1<<15; /* don't hang the machine! */
int mino = minor(dev);
u_short tcr;
if (mfpr(PR_MAPEN) == 0)
return;
tcr = dz->tcr; /* remember which lines to scan */
dz->tcr = (1 << mino);
while ((dz->csr & 0x8000) == 0) /* Wait until ready */
if (--timeout < 0)
break;
dz->tdr = ch; /* Put the character */
timeout = 1<<15;
while ((dz->csr & 0x8000) == 0) /* Wait until ready */
if (--timeout < 0)
break;
dz->tcr = tcr;
}
void
dzcnpollc(dev, pollflag)
dev_t dev;
int pollflag;
{
static u_char mask;
if (pollflag)
mask = vsbus_setmask(0);
else
vsbus_setmask(mask);
}
#if NLKC
cons_decl(lkc);
void
lkccninit(cndev)
struct consdev *cndev;
{
dz = (void*)dz_regs;
dz->csr = 0; /* Disable scanning until initting is done */
dz->tcr = 1; /* Turn off all but line 0's xmitter */
dz->rbuf = 0x1c18; /* XXX */
dz->csr = 0x20; /* Turn scanning back on */
}
int
lkccngetc(dev)
dev_t dev;
{
int lkc_decode(int);
int c;
// u_char mask;
// mask = vsbus_setmask(0); /* save old state */
loop:
while ((dz->csr & 0x80) == 0)
; /* Wait for char */
c = lkc_decode(dz->rbuf & 255);
if (c < 1)
goto loop;
// vsbus_clrintr(0x80); /* XXX */
// vsbus_setmask(mask);
return (c);
}
#endif