/* $NetBSD: dec_kn20aa.c,v 1.38 1998/04/17 02:45:19 mjacob Exp $ */ /* $FreeBSD$ */ /* * 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 "opt_ddb.h" #include #include #include #include #include #include #include #include #include #include #include "sio.h" #include "sc.h" #ifndef CONSPEED #define CONSPEED TTYDEF_SPEED #endif static int comcnrate = CONSPEED; void dec_kn20aa_init __P((void)); static void dec_kn20aa_cons_init __P((void)); static void dec_kn20aa_intr_init __P((void)); static void dec_kn20aa_intr_map __P((void *)); static void dec_kn20aa_intr_disable __P((int)); static void dec_kn20aa_intr_enable __P((int)); extern int siocnattach __P((int, int)); extern int siogdbattach __P((int, int)); extern int sccnattach __P((void)); #if 0 static void dec_kn20aa_device_register __P((struct device *, void *)); #endif const struct alpha_variation_table dec_kn20aa_variations[] = { { 0, "AlphaStation 500 or 600 (KN20AA)" }, { 0, NULL }, }; extern int comconsole; /* XXX for forcing comconsole when srm serial console is used */ 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(); #ifdef DDB siogdbattach(0x2f8, 9600); #endif ctb = (struct ctb *)(((caddr_t)hwrpb) + hwrpb->rpb_ctb_off); switch (ctb->ctb_term_type) { case 2: /* serial console ... */ /* XXX */ { /* * Delay to allow PROM putchars to complete. * FIFO depth * character time, * character time = (1000000 / (defaultrate / 10)) */ DELAY(160000000 / comcnrate); comconsole = 0; if (siocnattach(0x3f8, comcnrate)) panic("can't init serial console"); break; } case 3: /* display console ... */ /* XXX */ #if NSC > 0 sccnattach(); #else panic("not configured to use display && keyboard console"); #endif 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 = (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(); }