248 lines
6.5 KiB
C
248 lines
6.5 KiB
C
/* $NetBSD: jazzio.c,v 1.10 2003/05/03 18:10:45 wiz Exp $ */
|
|
/* $OpenBSD: picabus.c,v 1.11 1999/01/11 05:11:10 millert Exp $ */
|
|
/* NetBSD: tc.c,v 1.2 1995/03/08 00:39:05 cgd Exp */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
* Author: Per Fogelstrom. (Mips R4x00)
|
|
*
|
|
* 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 the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/pio.h>
|
|
#include <machine/autoconf.h>
|
|
#include <machine/platform.h>
|
|
|
|
#include <arc/jazz/jazziovar.h>
|
|
#include <arc/jazz/pica.h>
|
|
#include <arc/jazz/jazzdmatlbreg.h>
|
|
#include <arc/jazz/jazzdmatlbvar.h>
|
|
#include <arc/jazz/dma.h>
|
|
#include <arc/jazz/pckbc_jazzioreg.h>
|
|
|
|
void arc_sysreset __P((bus_addr_t, bus_size_t));
|
|
|
|
struct jazzio_softc {
|
|
struct device sc_dv;
|
|
struct abus sc_bus;
|
|
struct arc_bus_dma_tag sc_dmat;
|
|
struct pica_dev *sc_devs;
|
|
};
|
|
|
|
/* Definition of the driver for autoconfig. */
|
|
int jazziomatch(struct device *, struct cfdata *, void *);
|
|
void jazzioattach(struct device *, struct device *, void *);
|
|
int jazzioprint(void *, const char *);
|
|
|
|
CFATTACH_DECL(jazzio, sizeof(struct jazzio_softc),
|
|
jazziomatch, jazzioattach, NULL, NULL);
|
|
extern struct cfdriver jazzio_cd;
|
|
|
|
void jazzio_intr_establish(int, int (*)(void *), void *);
|
|
void jazzio_intr_disestablish(int);
|
|
int jazzio_intr(unsigned, struct clockframe *);
|
|
int jazzio_no_handler __P((void *));
|
|
|
|
/*
|
|
* Interrupt dispatch table for jazz i/o bus.
|
|
*/
|
|
struct jazzio_intr_registry {
|
|
intr_handler_t int_hand; /* Interrupt handler */
|
|
void *param; /* Parameter to send to handler */
|
|
};
|
|
|
|
struct jazzio_intr_registry jazzio_intrtab[] = {
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 0 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 1 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 2 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 3 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 4 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 5 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 6 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 7 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 8 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 9 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 10 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 11 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 12 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 13 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 14 */
|
|
{ jazzio_no_handler, (void *)NULL, }, /* 15 */
|
|
};
|
|
|
|
|
|
struct jazzio_config *jazzio_conf = NULL;
|
|
struct pica_dev *jazzio_devconfig = NULL;
|
|
int jazzio_found = 0;
|
|
int jazzio_int_mask = 0; /* jazz i/o interrupt enable mask */
|
|
|
|
struct arc_bus_space jazzio_bus;
|
|
|
|
int
|
|
jazziomatch(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct confargs *ca = aux;
|
|
|
|
/* Make sure that we're looking for a jazzio bus. */
|
|
if (strcmp(ca->ca_name, jazzio_cd.cd_name) != 0)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
jazzioattach(parent, self, aux)
|
|
struct device *parent;
|
|
struct device *self;
|
|
void *aux;
|
|
{
|
|
struct jazzio_softc *sc = (struct jazzio_softc *)self;
|
|
struct jazzio_attach_args ja;
|
|
int i;
|
|
|
|
if (jazzio_conf == NULL)
|
|
panic("jazzio_conf isn't initialized");
|
|
if (jazzio_devconfig == NULL)
|
|
panic("jazzio_devconfig isn't initialized");
|
|
|
|
jazzio_found = 1;
|
|
|
|
printf("\n");
|
|
|
|
/* keep our CPU device description handy */
|
|
sc->sc_devs = jazzio_devconfig;
|
|
|
|
/* set up interrupt handlers */
|
|
(*platform->set_intr)(MIPS_INT_MASK_1, jazzio_intr, 2);
|
|
|
|
sc->sc_bus.ab_dv = (struct device *)sc;
|
|
|
|
/* Initialize jazzio DMA mapping register area and pool */
|
|
jazz_dmatlb_init(&jazzio_bus, jazzio_conf->jc_dmatlbreg);
|
|
|
|
/* Create bus_dma_tag */
|
|
jazz_bus_dma_tag_init(&sc->sc_dmat);
|
|
|
|
/* Try to configure each jazzio attached device */
|
|
for (i = 0; sc->sc_devs[i].ps_ca.ca_name != NULL; i++) {
|
|
|
|
ja.ja_name = sc->sc_devs[i].ps_ca.ca_name;
|
|
ja.ja_bus = &sc->sc_bus;
|
|
ja.ja_bust = &jazzio_bus;
|
|
ja.ja_dmat = &sc->sc_dmat;
|
|
ja.ja_addr = (bus_addr_t)sc->sc_devs[i].ps_base;
|
|
ja.ja_intr = sc->sc_devs[i].ps_ca.ca_slot;
|
|
ja.ja_dma = 0;
|
|
|
|
/* Tell the autoconfig machinery we've found the hardware. */
|
|
config_found(self, &ja, jazzioprint);
|
|
}
|
|
}
|
|
|
|
int
|
|
jazzioprint(aux, pnp)
|
|
void *aux;
|
|
const char *pnp;
|
|
{
|
|
struct jazzio_attach_args *ja = aux;
|
|
|
|
if (pnp)
|
|
aprint_normal("%s at %s", ja->ja_name, pnp);
|
|
aprint_normal(" addr 0x%lx", ja->ja_addr);
|
|
if (ja->ja_intr != -1)
|
|
aprint_normal(" intr %d", ja->ja_intr);
|
|
return (UNCONF);
|
|
}
|
|
|
|
void
|
|
jazzio_intr_establish(intr, handler, val)
|
|
int intr;
|
|
intr_handler_t handler;
|
|
void *val;
|
|
{
|
|
if (intr < 0 ||
|
|
intr >= sizeof(jazzio_intrtab)/sizeof(jazzio_intrtab[0])) {
|
|
panic("jazzio intr %d out of range", intr);
|
|
} else if (jazzio_intrtab[intr].int_hand != jazzio_no_handler) {
|
|
panic("jazzio intr %d already set to %p", intr,
|
|
jazzio_intrtab[intr].int_hand);
|
|
} else {
|
|
jazzio_int_mask |= 1 << intr;
|
|
jazzio_intrtab[intr].int_hand = handler;
|
|
jazzio_intrtab[intr].param = val;
|
|
}
|
|
|
|
(*jazzio_conf->jc_set_iointr_mask)(jazzio_int_mask);
|
|
}
|
|
|
|
void
|
|
jazzio_intr_disestablish(intr)
|
|
int intr;
|
|
{
|
|
jazzio_int_mask &= ~(1 << intr);
|
|
jazzio_intrtab[intr].int_hand = jazzio_no_handler;
|
|
jazzio_intrtab[intr].param = (void *)NULL;
|
|
|
|
(*jazzio_conf->jc_set_iointr_mask)(jazzio_int_mask);
|
|
}
|
|
|
|
int
|
|
jazzio_no_handler(arg)
|
|
void *arg;
|
|
{
|
|
panic("uncaught jazzio interrupt with arg %p", arg);
|
|
}
|
|
|
|
/*
|
|
* Handle jazz i/o interrupt.
|
|
*/
|
|
int
|
|
jazzio_intr(mask, cf)
|
|
unsigned mask;
|
|
struct clockframe *cf;
|
|
{
|
|
unsigned int vector;
|
|
struct jazzio_intr_registry *jirp;
|
|
|
|
while ((vector = inb(jazzio_conf->jc_iointr_status_reg)) != 0) {
|
|
jirp = &jazzio_intrtab[(vector >> 2) - 1];
|
|
(*jirp->int_hand)(jirp->param);
|
|
}
|
|
return (~0); /* Dont reenable */
|
|
}
|
|
|
|
void
|
|
jazzio_reset()
|
|
{
|
|
arc_sysreset(PICA_SYS_KBD, JAZZIO_KBCMDP);
|
|
}
|