1 files changed, 347 insertions, 0 deletions

diff --git a/sys/alpha/alpha/dec_kn20aa.c b/sys/alpha/alpha/dec_kn20aa.c
new file mode 100644
index 000000000000..c8ab938af37f
--- /dev/null
+++ b/sys/alpha/alpha/dec_kn20aa.c
@@ -0,0 +1,347 @@
+/* $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 "opt_ddb.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/termios.h>
+
+#include <machine/rpb.h>
+#include <machine/cpuconf.h>
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+#include <pci/pci_ioctl.h>
+#include <alpha/pci/ciareg.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_map  __P((void *));
+static void dec_kn20aa_intr_disable __P((int));
+static void dec_kn20aa_intr_enable __P((int));
+
+#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 },
+};
+
+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_map  = dec_kn20aa_intr_map;
+	platform.pci_intr_disable = dec_kn20aa_intr_disable;
+	platform.pci_intr_enable = dec_kn20aa_intr_enable;
+#if 0
+	platform.device_register = dec_kn20aa_device_register;
+#endif
+}
+
+static void
+dec_kn20aa_cons_init()
+{
+	cia_init();
+#ifdef DDB
+	siocnattach(0x3f8, comcnrate);
+#endif
+#if 0
+	struct ctb *ctb;
+	struct cia_config *ccp;
+	extern struct cia_config cia_configuration;
+
+	ccp = &cia_configuration;
+	cia_init(ccp, 0);
+
+	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);
+
+			if(comcnattach(&ccp->cc_iot, 0x3f8, comcnrate,
+			    COM_FREQ,
+			    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
+				panic("can't init serial console");
+
+			break;
+		}
+
+	case 3:
+#if	NPCKBD > 0
+		/* display console ... */
+		/* XXX */
+		(void) pckbc_cnattach(&ccp->cc_iot, PCKBC_KBD_SLOT);
+
+		if ((ctb->ctb_turboslot & 0xffff) == 0)
+			isa_display_console(&ccp->cc_iot, &ccp->cc_memt);
+		else
+			pci_display_console(&ccp->cc_iot, &ccp->cc_memt,
+			    &ccp->cc_pc, (ctb->ctb_turboslot >> 8) & 0xff,
+			    ctb->ctb_turboslot & 0xff, 0);
+#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",
+		    ctb->ctb_term_type);
+	}
+#endif
+}
+#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_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:
+                printf("dec_kn20aa_intr_map: weird slot %d\n",
+                    cfg->slot);
+                return;
+        }
+
+        cfg->intline += cfg->bus;
+        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();
+}