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/* $Id: pcc.c,v 1.1 1995/10/18 08:51:10 deraadt Exp $ */
/*
*
* Copyright (c) 1995 Charles D. Cranor
* 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 by Charles D. Cranor.
* 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.
*/
/*
* peripheral channel controller
*/
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/callout.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/device.h>
#include <machine/cpu.h>
#include <dev/cons.h>
#include <mvme68k/mvme68k/isr.h>
#include <mvme68k/dev/iio.h>
#include <mvme68k/dev/pccreg.h>
/*
* Autoconfiguration stuff.
*/
struct pccsoftc {
struct device sc_dev;
struct pcc *sc_pcc;
};
void pccattach __P((struct device *, struct device *, void *));
int pccmatch __P((struct device *, void *, void *));
struct cfdriver pcccd = {
NULL, "pcc", pccmatch, pccattach,
DV_DULL, sizeof(struct pccsoftc), 0
};
/*
* globals
*/
struct pcc *sys_pcc = NULL;
struct {
int (*pcc_fn)();
void *arg;
int lvl;
} pcc_vecs[PCC_NVEC];
int
pccmatch(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct cfdata *cf = vcf;
return !badbaddr((caddr_t) IIO_CFLOC_ADDR(cf));
}
void
pccattach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct pccsoftc *pccsc;
if (sys_pcc)
panic("pcc already attached!");
iio_print(self->dv_cfdata);
/*
* link into softc and set up interrupt vector base
*/
pccsc = (struct pccsoftc *) self;
sys_pcc = pccsc->sc_pcc = (struct pcc *)IIO_CFLOC_ADDR(self->dv_cfdata);
pccsc->sc_pcc->int_vectr = PCC_VECBASE;
bzero(pcc_vecs, sizeof(pcc_vecs));
printf(" rev %d intbvr 0x%x\n", pccsc->sc_pcc->pcc_rev,
pccsc->sc_pcc->int_vectr);
}
/*
* pccintr: called from locore with the PC and evec from the trap frame.
*/
int
pccintr(pc, evec, frame)
int pc;
int evec;
void *frame;
{
int vec = (evec & 0xfff) >> 2; /* XXX should be m68k macro? */
extern u_long intrcnt[]; /* XXX from locore */
vec = vec & 0xf; /* XXX mask out */
if (vec >= PCC_NVEC || pcc_vecs[vec].pcc_fn == NULL)
return(straytrap(pc, evec));
cnt.v_intr++;
intrcnt[pcc_vecs[vec].lvl]++;
/* arg override? only timer1 gets access to frame */
if (vec != PCCV_TIMER1)
frame = pcc_vecs[vec].arg;
return((*pcc_vecs[vec].pcc_fn)(frame));
}
/*
* pccintr_establish: establish pcc interrupt
*/
int
pccintr_establish(vec, hand, lvl, arg)
u_long vec;
int (*hand)(), lvl;
void *arg;
{
if (vec >= PCC_NVEC) {
printf("pcc: illegal vector: 0x%x\n", vec);
panic("pccintr_establish");
}
if (pcc_vecs[vec].pcc_fn) {
printf("pcc: vector 0x%x in use: (0x%x,0x%x) (0x%x,0x%x)\n",
hand, arg, pcc_vecs[vec].pcc_fn, pcc_vecs[vec].arg);
panic("pccintr_establish");
}
pcc_vecs[vec].pcc_fn = hand;
pcc_vecs[vec].lvl = lvl;
pcc_vecs[vec].arg = arg;
}
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