336 lines
9.3 KiB
C
336 lines
9.3 KiB
C
/* $NetBSD: pci_1000a.c,v 1.1 1998/06/24 01:41:16 ross Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is based on pci_kn20aa.c, written by Chris G. Demetriou at
|
|
* Carnegie-Mellon University. Platform support for Noritake, Pintake, and
|
|
* Corelle by Ross Harvey with copyright assignment by permission of Avalon
|
|
* Computer Systems, Inc.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 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/cdefs.h> /* RCS ID & Copyright macro defns */
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: pci_1000a.c,v 1.1 1998/06/24 01:41:16 ross Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/device.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include <vm/vm.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
|
|
#include <alpha/pci/pci_1000a.h>
|
|
|
|
#ifndef EVCNT_COUNTERS
|
|
#include <machine/intrcnt.h>
|
|
#endif
|
|
|
|
#include "sio.h"
|
|
#if NSIO
|
|
#include <alpha/pci/siovar.h>
|
|
#endif
|
|
|
|
#define IMR2IRQ(bn) ((bn) - 1)
|
|
#define IRQ2IMR(irq) ((irq) + 1)
|
|
|
|
static bus_space_tag_t mystery_icu_iot;
|
|
static bus_space_handle_t mystery_icu_ioh[2];
|
|
|
|
int dec_1000a_intr_map __P((void *, pcitag_t, int, int,
|
|
pci_intr_handle_t *));
|
|
const char *dec_1000a_intr_string __P((void *, pci_intr_handle_t));
|
|
void *dec_1000a_intr_establish __P((void *, pci_intr_handle_t,
|
|
int, int (*func)(void *), void *));
|
|
void dec_1000a_intr_disestablish __P((void *, void *));
|
|
|
|
#define DEC_1000A_MAX_IRQ 32
|
|
#define PCI_STRAY_MAX 5
|
|
|
|
struct alpha_shared_intr *dec_1000a_pci_intr;
|
|
#ifdef EVCNT_COUNTERS
|
|
struct evcnt dec_1000a_intr_evcnt;
|
|
#endif
|
|
|
|
static void dec_1000a_iointr __P((void *framep, unsigned long vec));
|
|
static void dec_1000a_enable_intr __P((int irq));
|
|
static void dec_1000a_disable_intr __P((int irq));
|
|
static void pci_1000a_imi __P((void));
|
|
static pci_chipset_tag_t pc_tag;
|
|
|
|
int ross_tmp_didr; /* XXX XXX XXX */
|
|
int ross_tmp_didv; /* XXX XXX XXX */
|
|
|
|
void
|
|
pci_1000a_pickintr(core, iot, memt, pc)
|
|
void *core;
|
|
bus_space_tag_t iot, memt;
|
|
pci_chipset_tag_t pc;
|
|
{
|
|
int i;
|
|
mystery_icu_iot = iot;
|
|
|
|
pc_tag = pc;
|
|
if (bus_space_map(iot, 0x54a, 2, 0, mystery_icu_ioh + 0)
|
|
|| bus_space_map(iot, 0x54c, 2, 0, mystery_icu_ioh + 1))
|
|
panic("pci_1000a_pickintr");
|
|
pc->pc_intr_v = core;
|
|
pc->pc_intr_map = dec_1000a_intr_map;
|
|
pc->pc_intr_string = dec_1000a_intr_string;
|
|
pc->pc_intr_establish = dec_1000a_intr_establish;
|
|
pc->pc_intr_disestablish = dec_1000a_intr_disestablish;
|
|
|
|
pc->pc_pciide_compat_intr_establish = NULL;
|
|
|
|
dec_1000a_pci_intr = alpha_shared_intr_alloc(DEC_1000A_MAX_IRQ);
|
|
for (i = 0; i < DEC_1000A_MAX_IRQ; i++)
|
|
alpha_shared_intr_set_maxstrays(dec_1000a_pci_intr, i,
|
|
PCI_STRAY_MAX);
|
|
|
|
pci_1000a_imi();
|
|
#if NSIO
|
|
sio_intr_setup(pc, iot);
|
|
#endif
|
|
set_iointr(dec_1000a_iointr);
|
|
}
|
|
|
|
int
|
|
dec_1000a_intr_map(ccv, bustag, buspin, line, ihp)
|
|
void *ccv;
|
|
pcitag_t bustag;
|
|
int buspin, line;
|
|
pci_intr_handle_t *ihp;
|
|
{
|
|
int imrbit, device;
|
|
/*
|
|
* Get bit number in mystery ICU imr
|
|
*/
|
|
static const signed char imrmap[][4] = {
|
|
# define IRQSPLIT(o) { (o), (o)+1, (o)+16, (o)+16+1 }
|
|
# define IRQNONE { 0, 0, 0, 0 }
|
|
/* 0 */ { 1, 0, 0, 0 }, /* Noritake and Pintake */
|
|
/* 1 */ IRQSPLIT(8),
|
|
/* 2 */ IRQSPLIT(10),
|
|
/* 3 */ IRQSPLIT(12),
|
|
/* 4 */ IRQSPLIT(14),
|
|
/* 5 */ { 1, 0, 0, 0 }, /* Corelle */
|
|
/* 6 */ { 10, 0, 0, 0 }, /* Corelle */
|
|
/* 7 */ IRQNONE,
|
|
/* 8 */ IRQNONE,
|
|
/* 9 */ IRQNONE,
|
|
/* 10 */ IRQNONE,
|
|
/* 11 */ IRQSPLIT(2),
|
|
/* 12 */ IRQSPLIT(4),
|
|
/* 13 */ IRQSPLIT(6),
|
|
/* 14 */ IRQSPLIT(8) /* Corelle */
|
|
};
|
|
|
|
if (buspin == 0) /* No IRQ used. */
|
|
return 1;
|
|
if (!(1 <= buspin && buspin <= 4))
|
|
goto bad;
|
|
alpha_pci_decompose_tag(pc_tag, bustag, NULL, &device, NULL);
|
|
if (0 <= device && device < sizeof imrmap / sizeof imrmap[0]) {
|
|
imrbit = imrmap[device][buspin - 1];
|
|
if (imrbit) {
|
|
*ihp = IMR2IRQ(imrbit);
|
|
return 0;
|
|
}
|
|
}
|
|
bad: printf("dec_1000a_intr_map: can't map dev %d pin %d\n", device, buspin);
|
|
return 1;
|
|
}
|
|
|
|
const char *
|
|
dec_1000a_intr_string(ccv, ih)
|
|
void *ccv;
|
|
pci_intr_handle_t ih;
|
|
{
|
|
static const char irqmsg_fmt[] = "dec_1000a irq %ld";
|
|
static char irqstr[sizeof irqmsg_fmt];
|
|
|
|
|
|
if (ih > DEC_1000A_MAX_IRQ)
|
|
panic("dec_1000a_intr_string: bogus dec_1000a IRQ 0x%x\n", ih);
|
|
|
|
sprintf(irqstr, irqmsg_fmt, ih);
|
|
return (irqstr);
|
|
}
|
|
|
|
void *
|
|
dec_1000a_intr_establish(ccv, ih, level, func, arg)
|
|
void *ccv, *arg;
|
|
pci_intr_handle_t ih;
|
|
int level;
|
|
int (*func) __P((void *));
|
|
{
|
|
void *cookie;
|
|
|
|
if (ih > DEC_1000A_MAX_IRQ)
|
|
panic("dec_1000a_intr_establish: IRQ too high, 0x%x\n", ih);
|
|
|
|
cookie = alpha_shared_intr_establish(dec_1000a_pci_intr, ih, IST_LEVEL,
|
|
level, func, arg, "dec_1000a irq");
|
|
|
|
if (cookie != NULL &&
|
|
alpha_shared_intr_isactive(dec_1000a_pci_intr, ih))
|
|
dec_1000a_enable_intr(ih);
|
|
return (cookie);
|
|
}
|
|
|
|
void
|
|
dec_1000a_intr_disestablish(ccv, cookie)
|
|
void *ccv, *cookie;
|
|
{
|
|
panic("dec_1000a_intr_disestablish not implemented"); /* XXX */
|
|
}
|
|
|
|
static void
|
|
dec_1000a_iointr(framep, vec)
|
|
void *framep;
|
|
unsigned long vec;
|
|
{
|
|
int irq;
|
|
|
|
if (ross_tmp_didv)
|
|
printf("\tvec 0x%x\n", vec);
|
|
if (vec >= 0x900) {
|
|
if (vec >= 0x900 + (DEC_1000A_MAX_IRQ << 4))
|
|
panic("dec_1000a_iointr: vec 0x%x out of range\n", vec);
|
|
irq = (vec - 0x900) >> 4;
|
|
#ifdef EVCNT_COUNTERS
|
|
dec_1000a_intr_evcnt.ev_count++;
|
|
#else
|
|
if (DEC_1000A_MAX_IRQ != INTRCNT_DEC_1000A_IRQ_LEN)
|
|
panic("dec_1000a interrupt counter sizes inconsistent");
|
|
intrcnt[INTRCNT_DEC_1000A_IRQ + irq]++;
|
|
#endif
|
|
|
|
if (!alpha_shared_intr_dispatch(dec_1000a_pci_intr, irq)) {
|
|
alpha_shared_intr_stray(dec_1000a_pci_intr, irq,
|
|
"dec_1000a irq");
|
|
if (dec_1000a_pci_intr[irq].intr_nstrays ==
|
|
dec_1000a_pci_intr[irq].intr_maxstrays)
|
|
dec_1000a_disable_intr(irq);
|
|
}
|
|
return;
|
|
}
|
|
#if NSIO
|
|
if (vec >= 0x800) {
|
|
sio_iointr(framep, vec);
|
|
return;
|
|
}
|
|
#endif
|
|
panic("dec_1000a_iointr: weird vec 0x%x\n", vec);
|
|
}
|
|
|
|
/*
|
|
* Read and write the mystery ICU IMR registers
|
|
*/
|
|
|
|
#define IR(h) bus_space_read_2(mystery_icu_iot, mystery_icu_ioh[h], 0)
|
|
#define IW(h, v) bus_space_write_2(mystery_icu_iot, mystery_icu_ioh[h], 0, (v))
|
|
|
|
/*
|
|
* Enable and disable interrupts at the ICU level
|
|
*/
|
|
|
|
static void
|
|
dec_1000a_enable_intr(irq)
|
|
int irq;
|
|
{
|
|
int imrval = IRQ2IMR(irq);
|
|
int i = imrval >= 16;
|
|
|
|
if (ross_tmp_didr) {
|
|
IW(0, ~0);
|
|
IW(1, ~0);
|
|
return;
|
|
}
|
|
IW(i, IR(i) | 1 << (imrval & 0xf));
|
|
}
|
|
|
|
static void
|
|
dec_1000a_disable_intr(irq)
|
|
int irq;
|
|
{
|
|
int imrval = IRQ2IMR(irq);
|
|
int i = imrval >= 16;
|
|
|
|
IW(i, IR(i) & ~(1 << (imrval & 0xf)));
|
|
}
|
|
/*
|
|
* Initialize mystery ICU
|
|
*/
|
|
static void
|
|
pci_1000a_imi()
|
|
{
|
|
IW(0, IR(0) & 1);
|
|
IW(1, IR(0) & 3);
|
|
}
|