352 lines
9.2 KiB
C
352 lines
9.2 KiB
C
/* $NetBSD: picabus.c,v 1.9 2000/01/23 21:02:00 soda Exp $ */
|
|
/* $OpenBSD: picabus.c,v 1.7 1997/05/24 18:36:26 pefo 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/proc.h>
|
|
#include <sys/user.h>
|
|
#include <sys/device.h>
|
|
#include <vm/vm.h>
|
|
|
|
#include <machine/intr.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/pio.h>
|
|
#include <machine/autoconf.h>
|
|
|
|
#include <arc/pica/pica.h>
|
|
#include <arc/arc/arctype.h>
|
|
#include <arc/dev/dma.h>
|
|
|
|
struct pica_softc {
|
|
struct device sc_dv;
|
|
struct abus sc_bus;
|
|
struct pica_dev *sc_devs;
|
|
};
|
|
|
|
/* Definition of the driver for autoconfig. */
|
|
int picamatch(struct device *, struct cfdata *, void *);
|
|
void picaattach(struct device *, struct device *, void *);
|
|
int picaprint(void *, const char *);
|
|
|
|
struct cfattach pica_ca = {
|
|
sizeof(struct pica_softc), picamatch, picaattach
|
|
};
|
|
extern struct cfdriver pica_cd;
|
|
|
|
void pica_intr_establish __P((struct confargs *, int (*)(void *), void *));
|
|
void pica_intr_disestablish __P((struct confargs *));
|
|
caddr_t pica_cvtaddr __P((struct confargs *));
|
|
int pica_matchname __P((struct confargs *, char *));
|
|
int pica_iointr __P((unsigned int, struct clockframe *));
|
|
int pica_clkintr __P((unsigned int, struct clockframe *));
|
|
|
|
extern int cputype;
|
|
intr_handler_t pica_clock_handler;
|
|
|
|
/*
|
|
* Interrupt dispatch table.
|
|
*/
|
|
struct pica_int_desc int_table[] = {
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 0 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 1 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 2 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 3 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 4 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 5 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 6 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 7 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 8 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 9 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 10 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 11 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 12 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 13 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 14 */
|
|
{0, pica_intrnull, (void *)NULL, 0 }, /* 15 */
|
|
};
|
|
|
|
struct pica_dev {
|
|
struct confargs ps_ca;
|
|
u_int ps_mask;
|
|
intr_handler_t ps_handler;
|
|
void *ps_base;
|
|
};
|
|
#ifdef ACER_PICA_61
|
|
struct pica_dev acer_pica_61_cpu[] = {
|
|
{{ "dallas_rtc",0, 0, },
|
|
0, pica_intrnull, (void *)PICA_SYS_CLOCK, },
|
|
{{ "lpt", 1, 0, },
|
|
PICA_SYS_LB_IE_PAR1, pica_intrnull, (void *)PICA_SYS_PAR1, },
|
|
{{ "fdc", 2, 0, },
|
|
PICA_SYS_LB_IE_FLOPPY,pica_intrnull, (void *)PICA_SYS_FLOPPY, },
|
|
{{ NULL, 3, NULL, },
|
|
0, pica_intrnull, (void *)NULL, },
|
|
{{ NULL, 4, NULL, },
|
|
0, pica_intrnull, (void *)NULL, },
|
|
{{ "sonic", 5, 0, },
|
|
PICA_SYS_LB_IE_SONIC, pica_intrnull, (void *)PICA_SYS_SONIC, },
|
|
{{ "asc", 6, 0, },
|
|
PICA_SYS_LB_IE_SCSI, pica_intrnull, (void *)PICA_SYS_SCSI, },
|
|
{{ "pc", 7, 0, },
|
|
PICA_SYS_LB_IE_KBD, pica_intrnull, (void *)PICA_SYS_KBD, },
|
|
{{ "pms", 8, NULL, },
|
|
PICA_SYS_LB_IE_MOUSE, pica_intrnull, (void *)PICA_SYS_KBD, },
|
|
{{ "com", 9, 0, },
|
|
PICA_SYS_LB_IE_COM1, pica_intrnull, (void *)PICA_SYS_COM1, },
|
|
{{ "com", 10, 0, },
|
|
PICA_SYS_LB_IE_COM2, pica_intrnull, (void *)PICA_SYS_COM2, },
|
|
{{ NULL, -1, NULL, },
|
|
0, NULL, (void *)NULL, },
|
|
};
|
|
|
|
struct pica_dev mips_magnum_r4000_cpu[] = {
|
|
{{ "dallas_rtc",0, 0, },
|
|
0, pica_intrnull, (void *)PICA_SYS_CLOCK, },
|
|
{{ "lpt", 1, 0, },
|
|
PICA_SYS_LB_IE_PAR1, pica_intrnull, (void *)PICA_SYS_PAR1, },
|
|
{{ "fdc", 2, 0, },
|
|
PICA_SYS_LB_IE_FLOPPY,pica_intrnull, (void *)PICA_SYS_FLOPPY, },
|
|
{{ NULL, 3, NULL, },
|
|
0, pica_intrnull, (void *)NULL, },
|
|
{{ NULL, 4, NULL, },
|
|
0, pica_intrnull, (void *)NULL, },
|
|
{{ "sonic", 5, 0, },
|
|
PICA_SYS_LB_IE_SONIC, pica_intrnull, (void *)PICA_SYS_SONIC, },
|
|
{{ "asc", 6, 0, },
|
|
PICA_SYS_LB_IE_SCSI, pica_intrnull, (void *)PICA_SYS_SCSI, },
|
|
{{ "pckbd", 7, 0, },
|
|
PICA_SYS_LB_IE_KBD, pica_intrnull, (void *)PICA_SYS_KBD, },
|
|
{{ "pms", 8, NULL, },
|
|
PICA_SYS_LB_IE_MOUSE, pica_intrnull, (void *)PICA_SYS_KBD, },
|
|
{{ "com", 9, 0, },
|
|
PICA_SYS_LB_IE_COM1, pica_intrnull, (void *)PICA_SYS_COM1, },
|
|
{{ "com", 10, 0, },
|
|
PICA_SYS_LB_IE_COM2, pica_intrnull, (void *)PICA_SYS_COM2, },
|
|
{{ "fb", 11, 0, },
|
|
0, pica_intrnull, (void *)PICA_V_LOCAL_VIDEO, },
|
|
{{ NULL, -1, NULL, },
|
|
0, NULL, (void *)NULL, },
|
|
};
|
|
#endif
|
|
|
|
struct pica_dev *pica_cpu_devs[] = {
|
|
NULL, /* Unused */
|
|
#ifdef ACER_PICA_61
|
|
acer_pica_61_cpu, /* Acer PICA */
|
|
mips_magnum_r4000_cpu, /* Mips MAGNUM R4000 */
|
|
#else
|
|
NULL,
|
|
#endif
|
|
};
|
|
int npica_cpu_devs = sizeof pica_cpu_devs / sizeof pica_cpu_devs[0];
|
|
|
|
int local_int_mask = 0; /* Local interrupt enable mask */
|
|
|
|
int
|
|
picamatch(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct confargs *ca = aux;
|
|
|
|
/* Make sure that we're looking for a PICA. */
|
|
if (strcmp(ca->ca_name, pica_cd.cd_name) != 0)
|
|
return (0);
|
|
|
|
/* Make sure that unit exists. */
|
|
if (match->cf_unit != 0 ||
|
|
cputype > npica_cpu_devs || pica_cpu_devs[cputype] == NULL)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
picaattach(parent, self, aux)
|
|
struct device *parent;
|
|
struct device *self;
|
|
void *aux;
|
|
{
|
|
struct pica_softc *sc = (struct pica_softc *)self;
|
|
struct confargs *nca;
|
|
int i;
|
|
|
|
printf("\n");
|
|
|
|
/* keep our CPU device description handy */
|
|
sc->sc_devs = pica_cpu_devs[cputype];
|
|
|
|
/* set up interrupt handlers */
|
|
set_intr(MIPS_INT_MASK_1, pica_iointr, 2);
|
|
|
|
sc->sc_bus.ab_dv = (struct device *)sc;
|
|
sc->sc_bus.ab_type = BUS_PICA;
|
|
sc->sc_bus.ab_intr_establish = pica_intr_establish;
|
|
sc->sc_bus.ab_intr_disestablish = pica_intr_disestablish;
|
|
sc->sc_bus.ab_cvtaddr = pica_cvtaddr;
|
|
sc->sc_bus.ab_matchname = pica_matchname;
|
|
|
|
/* Initialize PICA Dma */
|
|
picaDmaInit();
|
|
|
|
/* Try to configure each PICA attached device */
|
|
for (i = 0; sc->sc_devs[i].ps_ca.ca_slot >= 0; i++) {
|
|
|
|
if(sc->sc_devs[i].ps_ca.ca_name == NULL)
|
|
continue; /* Empty slot */
|
|
|
|
nca = &sc->sc_devs[i].ps_ca;
|
|
nca->ca_bus = &sc->sc_bus;
|
|
|
|
/* Tell the autoconfig machinery we've found the hardware. */
|
|
config_found(self, nca, picaprint);
|
|
}
|
|
}
|
|
|
|
int
|
|
picaprint(aux, pnp)
|
|
void *aux;
|
|
const char *pnp;
|
|
{
|
|
struct confargs *ca = aux;
|
|
|
|
if (pnp)
|
|
printf("%s at %s", ca->ca_name, pnp);
|
|
printf(" slot %d offset 0x%x", ca->ca_slot, ca->ca_offset);
|
|
return (UNCONF);
|
|
}
|
|
|
|
caddr_t
|
|
pica_cvtaddr(ca)
|
|
struct confargs *ca;
|
|
{
|
|
struct pica_softc *sc = pica_cd.cd_devs[0];
|
|
|
|
return(sc->sc_devs[ca->ca_slot].ps_base + ca->ca_offset);
|
|
|
|
}
|
|
|
|
void
|
|
pica_intr_establish(ca, handler, val)
|
|
struct confargs *ca;
|
|
intr_handler_t handler;
|
|
void *val;
|
|
{
|
|
struct pica_softc *sc = pica_cd.cd_devs[0];
|
|
|
|
int slot;
|
|
|
|
slot = ca->ca_slot;
|
|
if(slot == 0) { /* Slot 0 is special, clock */
|
|
pica_clock_handler = handler;
|
|
set_intr(MIPS_INT_MASK_4, pica_clkintr, 1);
|
|
}
|
|
|
|
if(int_table[slot].int_mask != 0) {
|
|
panic("pica intr already set");
|
|
}
|
|
else {
|
|
int_table[slot].int_mask = sc->sc_devs[slot].ps_mask;;
|
|
local_int_mask |= int_table[slot].int_mask;
|
|
int_table[slot].int_hand = handler;
|
|
int_table[slot].param = val;
|
|
}
|
|
out16(PICA_SYS_LB_IE, local_int_mask);
|
|
}
|
|
|
|
void
|
|
pica_intr_disestablish(ca)
|
|
struct confargs *ca;
|
|
{
|
|
int slot;
|
|
|
|
slot = ca->ca_slot;
|
|
if(slot != 0) { /* Slot 0 is special, clock */
|
|
local_int_mask &= ~int_table[slot].int_mask;
|
|
int_table[slot].int_mask = 0;
|
|
int_table[slot].int_hand = pica_intrnull;
|
|
int_table[slot].param = (void *)NULL;
|
|
}
|
|
}
|
|
|
|
int
|
|
pica_matchname(ca, name)
|
|
struct confargs *ca;
|
|
char *name;
|
|
{
|
|
return (strcmp(name, ca->ca_name) == 0);
|
|
}
|
|
|
|
int
|
|
pica_intrnull(val)
|
|
void *val;
|
|
{
|
|
panic("uncaught PICA intr for slot %p\n", val);
|
|
}
|
|
|
|
/*
|
|
* Handle pica i/o interrupt.
|
|
*/
|
|
int
|
|
pica_iointr(mask, cf)
|
|
unsigned mask;
|
|
struct clockframe *cf;
|
|
{
|
|
int vector;
|
|
|
|
while((vector = inb(PVIS) >> 2) != 0) {
|
|
(*int_table[vector].int_hand)(int_table[vector].param);
|
|
}
|
|
return(~0); /* Dont reenable */
|
|
}
|
|
|
|
/*
|
|
* Handle pica interval clock interrupt.
|
|
*/
|
|
int
|
|
pica_clkintr(mask, cf)
|
|
unsigned mask;
|
|
struct clockframe *cf;
|
|
{
|
|
int temp;
|
|
|
|
temp = inw(R4030_SYS_IT_STAT);
|
|
(*pica_clock_handler)(cf);
|
|
|
|
/* Re-enable clock interrupts */
|
|
splx(MIPS_INT_MASK_4 | MIPS_SR_INT_IE);
|
|
|
|
return(~MIPS_INT_MASK_4); /* Keep clock interrupts enabled */
|
|
}
|
|
|