NetBSD-5.0.2/sys/arch/alpha/pci/pci_axppci_33.c
/* $NetBSD: pci_axppci_33.c,v 1.29 2002/09/27 15:35:38 provos Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Jeffrey Hsu and 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_axppci_33.c,v 1.29 2002/09/27 15:35:38 provos Exp $");
#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/lcavar.h>
#include <alpha/pci/pci_axppci_33.h>
#include <alpha/pci/siovar.h>
#include <alpha/pci/sioreg.h>
#include "sio.h"
int dec_axppci_33_intr_map __P((struct pci_attach_args *, pci_intr_handle_t *));
const char *dec_axppci_33_intr_string __P((void *, pci_intr_handle_t));
const struct evcnt *dec_axppci_33_intr_evcnt __P((void *, pci_intr_handle_t));
void *dec_axppci_33_intr_establish __P((void *, pci_intr_handle_t,
int, int (*func)(void *), void *));
void dec_axppci_33_intr_disestablish __P((void *, void *));
#define LCA_SIO_DEVICE 7 /* XXX */
void
pci_axppci_33_pickintr(lcp)
struct lca_config *lcp;
{
bus_space_tag_t iot = &lcp->lc_iot;
pci_chipset_tag_t pc = &lcp->lc_pc;
pcireg_t sioclass;
int sioII;
/* XXX MAGIC NUMBER */
sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0),
PCI_CLASS_REG);
sioII = (sioclass & 0xff) >= 3;
if (!sioII)
printf("WARNING: SIO NOT SIO II... NO BETS...\n");
pc->pc_intr_v = lcp;
pc->pc_intr_map = dec_axppci_33_intr_map;
pc->pc_intr_string = dec_axppci_33_intr_string;
pc->pc_intr_evcnt = dec_axppci_33_intr_evcnt;
pc->pc_intr_establish = dec_axppci_33_intr_establish;
pc->pc_intr_disestablish = dec_axppci_33_intr_disestablish;
/* Not supported on AXPpci33. */
pc->pc_pciide_compat_intr_establish = NULL;
#if NSIO
sio_intr_setup(pc, iot);
#else
panic("pci_axppci_33_pickintr: no I/O interrupt handler (no sio)");
#endif
}
int
dec_axppci_33_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;
#ifndef DIAGNOSTIC
pirq = 0; /* XXX gcc -Wuninitialized */
#endif
if (buspin == 0) {
/* No IRQ used. */
return 1;
}
if (buspin > 4) {
printf("dec_axppci_33_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 */
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_axppci_33_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_axppci_33_intr_map: bogus PCI pin %d",
buspin);
#endif
};
break;
case 8: /* 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_axppci_33_intr_map bogus: PCI pin %d",
buspin);
#endif
};
break;
default:
printf("dec_axppci_33_intr_map: weird device number %d\n",
device);
return 1;
}
pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0),
SIO_PCIREG_PIRQ_RTCTRL);
#if 0
printf("dec_axppci_33_intr_map: 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; /* not routed? */
pirqline &= 0xf;
#if 0
printf("dec_axppci_33_intr_map: device %d pin %c: mapped to line %d\n",
device, '@' + buspin, pirqline);
#endif
*ihp = pirqline;
return (0);
}
const char *
dec_axppci_33_intr_string(lcv, ih)
void *lcv;
pci_intr_handle_t ih;
{
#if 0
struct lca_config *lcp = lcv;
#endif
return sio_intr_string(NULL /*XXX*/, ih);
}
const struct evcnt *
dec_axppci_33_intr_evcnt(lcv, ih)
void *lcv;
pci_intr_handle_t ih;
{
#if 0
struct lca_config *lcp = lcv;
#endif
return sio_intr_evcnt(NULL /*XXX*/, ih);
}
void *
dec_axppci_33_intr_establish(lcv, ih, level, func, arg)
void *lcv, *arg;
pci_intr_handle_t ih;
int level;
int (*func) __P((void *));
{
#if 0
struct lca_config *lcp = lcv;
#endif
return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
arg);
}
void
dec_axppci_33_intr_disestablish(lcv, cookie)
void *lcv, *cookie;
{
#if 0
struct lca_config *lcp = lcv;
#endif
sio_intr_disestablish(NULL /*XXX*/, cookie);
}