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/* $OpenBSD: tc_3000_300.c,v 1.5 1996/10/30 22:41:16 niklas Exp $ */
/* $NetBSD: tc_3000_300.c,v 1.12 1996/10/13 03:00:37 christos Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* 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/autoconf.h>
#include <machine/pte.h>
#ifndef EVCNT_COUNTERS
#include <machine/intrcnt.h>
#endif
#include <dev/tc/tcvar.h>
#include <alpha/tc/tc_conf.h>
#include <alpha/tc/tc_3000_300.h>
#include <alpha/tc/ioasicreg.h>
void tc_3000_300_intr_setup __P((void));
void tc_3000_300_intr_establish __P((struct device *, void *,
tc_intrlevel_t, int (*)(void *), void *));
void tc_3000_300_intr_disestablish __P((struct device *, void *));
void tc_3000_300_iointr __P((void *, unsigned long));
int tc_3000_300_intrnull __P((void *));
#define C(x) ((void *)(u_long)x)
#define KV(x) (ALPHA_PHYS_TO_K0SEG(x))
/*
* We have to read and modify the IOASIC registers directly, because
* the TC option slot interrupt request and mask bits are stored there,
* and the ioasic code isn't initted when we need to frob some interrupt
* bits.
*/
#define DEC_3000_300_IOASIC_ADDR KV(0x1a0000000)
struct tc_slotdesc tc_3000_300_slots[] = {
{ KV(0x100000000), C(TC_3000_300_DEV_OPT0), }, /* 0 - opt slot 0 */
{ KV(0x120000000), C(TC_3000_300_DEV_OPT1), }, /* 1 - opt slot 1 */
{ KV(0x180000000), C(TC_3000_300_DEV_BOGUS), }, /* 2 - TCDS ASIC */
{ KV(0x1a0000000), C(TC_3000_300_DEV_BOGUS), }, /* 3 - IOCTL ASIC */
{ KV(0x1c0000000), C(TC_3000_300_DEV_CXTURBO), }, /* 4 - CXTurbo */
};
int tc_3000_300_nslots =
sizeof(tc_3000_300_slots) / sizeof(tc_3000_300_slots[0]);
struct tc_builtin tc_3000_300_builtins[] = {
{ "PMAGB-BA", 4, 0x02000000, C(TC_3000_300_DEV_CXTURBO), },
{ "FLAMG-IO", 3, 0x00000000, C(TC_3000_300_DEV_IOASIC), },
{ "PMAZ-DS ", 2, 0x00000000, C(TC_3000_300_DEV_TCDS), },
};
int tc_3000_300_nbuiltins =
sizeof(tc_3000_300_builtins) / sizeof(tc_3000_300_builtins[0]);
struct tcintr {
int (*tci_func) __P((void *));
void *tci_arg;
} tc_3000_300_intr[TC_3000_300_NCOOKIES];
void
tc_3000_300_intr_setup()
{
volatile u_int32_t *imskp;
u_long i;
/*
* Disable all interrupts that we can (can't disable builtins).
*/
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
*imskp &= ~(IOASIC_INTR_300_OPT0 | IOASIC_INTR_300_OPT1);
/*
* Set up interrupt handlers.
*/
for (i = 0; i < TC_3000_300_NCOOKIES; i++) {
tc_3000_300_intr[i].tci_func = tc_3000_300_intrnull;
tc_3000_300_intr[i].tci_arg = (void *)i;
}
}
void
tc_3000_300_intr_establish(tcadev, cookie, level, func, arg)
struct device *tcadev;
void *cookie, *arg;
tc_intrlevel_t level;
int (*func) __P((void *));
{
volatile u_int32_t *imskp;
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_300_intr[dev].tci_func != tc_3000_300_intrnull)
panic("tc_3000_300_intr_establish: cookie %d twice", dev);
tc_3000_300_intr[dev].tci_func = func;
tc_3000_300_intr[dev].tci_arg = arg;
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
switch (dev) {
case TC_3000_300_DEV_OPT0:
*imskp |= IOASIC_INTR_300_OPT0;
break;
case TC_3000_300_DEV_OPT1:
*imskp |= IOASIC_INTR_300_OPT1;
break;
default:
/* interrupts for builtins always enabled */
break;
}
}
void
tc_3000_300_intr_disestablish(tcadev, cookie)
struct device *tcadev;
void *cookie;
{
volatile u_int32_t *imskp;
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_300_intr[dev].tci_func == tc_3000_300_intrnull)
panic("tc_3000_300_intr_disestablish: cookie %d bad intr",
dev);
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
switch (dev) {
case TC_3000_300_DEV_OPT0:
*imskp &= ~IOASIC_INTR_300_OPT0;
break;
case TC_3000_300_DEV_OPT1:
*imskp &= ~IOASIC_INTR_300_OPT1;
break;
default:
/* interrupts for builtins always enabled */
break;
}
tc_3000_300_intr[dev].tci_func = tc_3000_300_intrnull;
tc_3000_300_intr[dev].tci_arg = (void *)dev;
}
int
tc_3000_300_intrnull(val)
void *val;
{
panic("tc_3000_300_intrnull: uncaught TC intr for cookie %ld\n",
(u_long)val);
}
void
tc_3000_300_iointr(framep, vec)
void *framep;
unsigned long vec;
{
u_int32_t tcir, ioasicir, ioasicimr;
int ifound;
#ifdef DIAGNOSTIC
int s;
if (vec != 0x800)
panic("INVALID ASSUMPTION: vec 0x%lx, not 0x800", vec);
s = splhigh();
if (s != ALPHA_PSL_IPL_IO)
panic("INVALID ASSUMPTION: IPL %d, not %d", s,
ALPHA_PSL_IPL_IO);
splx(s);
#endif
do {
tc_syncbus();
/* find out what interrupts/errors occurred */
tcir = *(volatile u_int32_t *)TC_3000_300_IR;
ioasicir = *(volatile u_int32_t *)
IOASIC_REG_INTR(DEC_3000_300_IOASIC_ADDR);
ioasicimr = *(volatile u_int32_t *)
IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
tc_mb();
/* Ignore interrupts that aren't enabled out. */
ioasicir &= ioasicimr;
/* clear the interrupts/errors we found. */
*(volatile u_int32_t *)TC_3000_300_IR = tcir;
/* XXX can't clear TC option slot interrupts here? */
tc_wmb();
ifound = 0;
#ifdef EVCNT_COUNTERS
/* No interrupt counting via evcnt counters */
XXX BREAK HERE XXX
#else /* !EVCNT_COUNTERS */
#define INCRINTRCNT(slot) intrcnt[INTRCNT_KN16 + slot]++
#endif /* EVCNT_COUNTERS */
#define CHECKINTR(slot, flag) \
if (flag) { \
ifound = 1; \
INCRINTRCNT(slot); \
(*tc_3000_300_intr[slot].tci_func) \
(tc_3000_300_intr[slot].tci_arg); \
}
/* Do them in order of priority; highest slot # first. */
CHECKINTR(TC_3000_300_DEV_CXTURBO,
tcir & TC_3000_300_IR_CXTURBO);
CHECKINTR(TC_3000_300_DEV_IOASIC,
(tcir & TC_3000_300_IR_IOASIC) &&
(ioasicir & ~(IOASIC_INTR_300_OPT1|IOASIC_INTR_300_OPT0)));
CHECKINTR(TC_3000_300_DEV_TCDS, tcir & TC_3000_300_IR_TCDS);
CHECKINTR(TC_3000_300_DEV_OPT1,
ioasicir & IOASIC_INTR_300_OPT1);
CHECKINTR(TC_3000_300_DEV_OPT0,
ioasicir & IOASIC_INTR_300_OPT0);
#undef CHECKINTR
#ifdef DIAGNOSTIC
#define PRINTINTR(msg, bits) \
if (tcir & bits) \
printf(msg);
PRINTINTR("BCache tag parity error\n",
TC_3000_300_IR_BCTAGPARITY);
PRINTINTR("TC overrun error\n", TC_3000_300_IR_TCOVERRUN);
PRINTINTR("TC I/O timeout\n", TC_3000_300_IR_TCTIMEOUT);
PRINTINTR("Bcache parity error\n",
TC_3000_300_IR_BCACHEPARITY);
PRINTINTR("Memory parity error\n", TC_3000_300_IR_MEMPARITY);
#undef PRINTINTR
#endif
} while (ifound);
}
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