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/* $OpenBSD: pci_2100_a50.c,v 1.21 2008/07/22 18:45:50 miod Exp $ */
/* $NetBSD: pci_2100_a50.c,v 1.12 1996/11/13 21:13:29 cgd Exp $ */
/*
* 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/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/apecsvar.h>
#include <alpha/pci/pci_2100_a50.h>
#include <alpha/pci/siovar.h>
#include <alpha/pci/sioreg.h>
#include "sio.h"
int dec_2100_a50_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
const char *dec_2100_a50_intr_string(void *, pci_intr_handle_t);
int dec_2100_a50_intr_line(void *, pci_intr_handle_t);
void *dec_2100_a50_intr_establish(void *, pci_intr_handle_t,
int, int (*func)(void *), void *, char *);
void dec_2100_a50_intr_disestablish(void *, void *);
#define APECS_SIO_DEVICE 7 /* XXX */
void
pci_2100_a50_pickintr(acp)
struct apecs_config *acp;
{
bus_space_tag_t iot = &acp->ac_iot;
pci_chipset_tag_t pc = &acp->ac_pc;
pcireg_t sioclass;
int sioII;
/* XXX MAGIC NUMBER */
sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, 7, 0), PCI_CLASS_REG);
sioII = (sioclass & 0xff) >= 3;
if (!sioII)
printf("WARNING: SIO NOT SIO II... NO BETS...\n");
pc->pc_intr_v = acp;
pc->pc_intr_map = dec_2100_a50_intr_map;
pc->pc_intr_string = dec_2100_a50_intr_string;
pc->pc_intr_line = dec_2100_a50_intr_line;
pc->pc_intr_establish = dec_2100_a50_intr_establish;
pc->pc_intr_disestablish = dec_2100_a50_intr_disestablish;
/* Not supported on 2100 A50. */
pc->pc_pciide_compat_intr_establish = NULL;
pc->pc_pciide_compat_intr_disestablish = NULL;
#if NSIO
sio_intr_setup(pc, iot);
#else
panic("pci_2100_a50_pickintr: no I/O interrupt handler (no sio)");
#endif
}
int
dec_2100_a50_intr_map(pa, ihp)
struct pci_attach_args *pa;
pci_intr_handle_t *ihp;
{
pcitag_t bustag = pa->pa_intrtag;
int buspin = pa->pa_intrpin;
pci_chipset_tag_t pc = pa->pa_pc;
int device, pirq;
pcireg_t pirqreg;
u_int8_t pirqline;
if (buspin == 0) {
/* No IRQ used. */
return 1;
}
if (buspin > 4) {
printf("dec_2100_a50_intr_map: bad interrupt pin %d\n",
buspin);
return 1;
}
pci_decompose_tag(pc, bustag, NULL, &device, NULL);
switch (device) {
case 6: /* NCR SCSI */
pirq = 3;
break;
case 11: /* slot 1 */
case 14: /* slot 3 */
switch (buspin) {
case PCI_INTERRUPT_PIN_A:
case PCI_INTERRUPT_PIN_D:
pirq = 0;
break;
case PCI_INTERRUPT_PIN_B:
pirq = 2;
break;
case PCI_INTERRUPT_PIN_C:
pirq = 1;
break;
#ifdef DIAGNOSTIC
default: /* XXX gcc -Wuninitialized */
panic("dec_2100_a50_intr_map bogus PCI pin %d",
buspin);
#endif
};
break;
case 12: /* slot 2 */
switch (buspin) {
case PCI_INTERRUPT_PIN_A:
case PCI_INTERRUPT_PIN_D:
pirq = 1;
break;
case PCI_INTERRUPT_PIN_B:
pirq = 0;
break;
case PCI_INTERRUPT_PIN_C:
pirq = 2;
break;
#ifdef DIAGNOSTIC
default: /* XXX gcc -Wuninitialized */
panic("dec_2100_a50_intr_map bogus PCI pin %d",
buspin);
#endif
};
break;
case 13: /* slot 3 */
switch (buspin) {
case PCI_INTERRUPT_PIN_A:
case PCI_INTERRUPT_PIN_D:
pirq = 2;
break;
case PCI_INTERRUPT_PIN_B:
pirq = 1;
break;
case PCI_INTERRUPT_PIN_C:
pirq = 0;
break;
#ifdef DIAGNOSTIC
default: /* XXX gcc -Wuninitialized */
panic("dec_2100_a50_intr_map bogus PCI pin %d",
buspin);
#endif
};
break;
default:
printf("dec_2100_a50_intr_map: weird device number %d\n",
device);
return 1;
}
pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, APECS_SIO_DEVICE, 0),
SIO_PCIREG_PIRQ_RTCTRL);
#if 0
printf("pci_2100_a50_map_int: device %d pin %c: pirq %d, reg = %x\n",
device, '@' + buspin, pirq, pirqreg);
#endif
pirqline = (pirqreg >> (pirq * 8)) & 0xff;
if ((pirqline & 0x80) != 0)
return 1;
pirqline &= 0xf;
#if 0
printf("pci_2100_a50_map_int: device %d pin %c: mapped to line %d\n",
device, '@' + buspin, pirqline);
#endif
*ihp = pirqline;
return (0);
}
const char *
dec_2100_a50_intr_string(acv, ih)
void *acv;
pci_intr_handle_t ih;
{
return sio_intr_string(NULL /*XXX*/, ih);
}
int
dec_2100_a50_intr_line(acv, ih)
void *acv;
pci_intr_handle_t ih;
{
return sio_intr_line(NULL /*XXX*/, ih);
}
void *
dec_2100_a50_intr_establish(acv, ih, level, func, arg, name)
void *acv, *arg;
pci_intr_handle_t ih;
int level;
int (*func)(void *);
char *name;
{
return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
arg, name);
}
void
dec_2100_a50_intr_disestablish(acv, cookie)
void *acv, *cookie;
{
sio_intr_disestablish(NULL /*XXX*/, cookie);
}
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