FreeBSD-5.3/sys/alpha/alpha/dec_kn20aa.c
/* $NetBSD: dec_kn20aa.c,v 1.38 1998/04/17 02:45:19 mjacob Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 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.
*/
/*
* Additional Copyright (c) 1997 by Matthew Jacob for NASA/Ames Research Center
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/alpha/alpha/dec_kn20aa.c,v 1.19 2004/07/10 22:29:40 marcel Exp $");
#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <sys/termios.h>
#include <sys/bus.h>
#include <machine/clock.h>
#include <machine/cpuconf.h>
#include <machine/md_var.h>
#include <machine/rpb.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/ciareg.h>
#include <alpha/pci/ciavar.h>
void dec_kn20aa_init(void);
static void dec_kn20aa_cons_init(void);
static void dec_kn20aa_intr_init(void);
static void dec_kn20aa_intr_map(void *);
static void dec_kn20aa_intr_disable(int);
static void dec_kn20aa_intr_enable(int);
#if 0
static void dec_kn20aa_device_register(struct device *, void *);
#endif
const struct alpha_variation_table dec_kn20aa_variations[] = {
{ 0, "AlphaStation 500 or 600 (KN20AA)" },
{ 0, NULL },
};
void
dec_kn20aa_init()
{
u_int64_t variation;
platform.family = "AlphaStation 500 or 600 (KN20AA)";
if ((platform.model = alpha_dsr_sysname()) == NULL) {
variation = hwrpb->rpb_variation & SV_ST_MASK;
if ((platform.model = alpha_variation_name(variation,
dec_kn20aa_variations)) == NULL)
platform.model = alpha_unknown_sysname();
}
platform.iobus = "cia";
platform.cons_init = dec_kn20aa_cons_init;
platform.pci_intr_init = dec_kn20aa_intr_init;
platform.pci_intr_map = dec_kn20aa_intr_map;
platform.pci_intr_disable = dec_kn20aa_intr_disable;
platform.pci_intr_enable = dec_kn20aa_intr_enable;
}
static void
dec_kn20aa_cons_init()
{
struct ctb *ctb;
cia_init();
ctb = (struct ctb *)(((caddr_t)hwrpb) + hwrpb->rpb_ctb_off);
switch (ctb->ctb_term_type) {
case 2:
boothowto |= RB_SERIAL;
break;
case 3:
boothowto &= ~RB_SERIAL;
break;
default:
printf("ctb->ctb_term_type = 0x%lx\n", ctb->ctb_term_type);
printf("ctb->ctb_turboslot = 0x%lx\n", ctb->ctb_turboslot);
panic("consinit: unknown console type %d\n",
(int)ctb->ctb_term_type);
}
}
#if 0
static void
dec_kn20aa_device_register(dev, aux)
struct device *dev;
void *aux;
{
static int found, initted, scsiboot, netboot;
static struct device *pcidev, *scsidev;
struct bootdev_data *b = bootdev_data;
struct device *parent = dev->dv_parent;
struct cfdata *cf = dev->dv_cfdata;
struct cfdriver *cd = cf->cf_driver;
if (found)
return;
if (!initted) {
scsiboot = (strcmp(b->protocol, "SCSI") == 0);
netboot = (strcmp(b->protocol, "BOOTP") == 0);
#if 0
printf("scsiboot = %d, netboot = %d\n", scsiboot, netboot);
#endif
initted =1;
}
if (pcidev == NULL) {
if (strcmp(cd->cd_name, "pci"))
return;
else {
struct pcibus_attach_args *pba = aux;
if ((b->slot / 1000) != pba->pba_bus)
return;
pcidev = dev;
#if 0
printf("\npcidev = %s\n", pcidev->dv_xname);
#endif
return;
}
}
if (scsiboot && (scsidev == NULL)) {
if (parent != pcidev)
return;
else {
struct pci_attach_args *pa = aux;
if ((b->slot % 1000) != pa->pa_device)
return;
/* XXX function? */
scsidev = dev;
#if 0
printf("\nscsidev = %s\n", scsidev->dv_xname);
#endif
return;
}
}
if (scsiboot &&
(!strcmp(cd->cd_name, "sd") ||
!strcmp(cd->cd_name, "st") ||
!strcmp(cd->cd_name, "cd"))) {
struct scsipibus_attach_args *sa = aux;
if (parent->dv_parent != scsidev)
return;
if (b->unit / 100 != sa->sa_sc_link->scsipi_scsi.target)
return;
/* XXX LUN! */
switch (b->boot_dev_type) {
case 0:
if (strcmp(cd->cd_name, "sd") &&
strcmp(cd->cd_name, "cd"))
return;
break;
case 1:
if (strcmp(cd->cd_name, "st"))
return;
break;
default:
return;
}
/* we've found it! */
booted_device = dev;
#if 0
printf("\nbooted_device = %s\n", booted_device->dv_xname);
#endif
found = 1;
}
if (netboot) {
if (parent != pcidev)
return;
else {
struct pci_attach_args *pa = aux;
if ((b->slot % 1000) != pa->pa_device)
return;
/* XXX function? */
booted_device = dev;
#if 0
printf("\nbooted_device = %s\n", booted_device->dv_xname);
#endif
found = 1;
return;
}
}
}
#endif
#define KN20AA_MAX_IRQ 32
void
dec_kn20aa_intr_init()
{
/*
* Enable ISA-PCI cascade interrupt.
*/
dec_kn20aa_intr_enable(31);
}
void
dec_kn20aa_intr_map(void *arg)
{
pcicfgregs *cfg;
cfg = (pcicfgregs *)arg;
/*
* Slot->interrupt translation. Appears to work, though it
* may not hold up forever.
*
* The DEC engineers who did this hardware obviously engaged
* in random drug testing.
*/
switch (cfg->slot) {
case 11:
case 12:
cfg->intline = ((cfg->slot - 11) + 0) * 4;
break;
case 7:
cfg->intline = 8;
break;
case 9:
cfg->intline = 12;
break;
case 6: /* 21040 on AlphaStation 500 */
cfg->intline = 13;
break;
case 8:
cfg->intline = 16;
break;
case 10: /* 8275EB on AlphaStation 500 */
return;
default:
if(!cfg->bus){
printf("dec_kn20aa_intr_map: weird slot %d\n",
cfg->slot);
return;
} else {
cfg->intline = cfg->slot;
}
}
cfg->intline += cfg->bus*16;
if (cfg->intline > KN20AA_MAX_IRQ)
panic("dec_kn20aa_intr_map: cfg->intline too large (%d)\n",
cfg->intline);
}
void
dec_kn20aa_intr_enable(irq)
int irq;
{
/*
* From disassembling small bits of the OSF/1 kernel:
* the following appears to enable a given interrupt request.
* "blech." I'd give valuable body parts for better docs or
* for a good decompiler.
*/
alpha_mb();
REGVAL(0x8780000000L + 0x40L) |= (1 << irq); /* XXX */
alpha_mb();
}
void
dec_kn20aa_intr_disable(irq)
int irq;
{
alpha_mb();
REGVAL(0x8780000000L + 0x40L) &= ~(1 << irq); /* XXX */
alpha_mb();
}