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      1 /* $NetBSD: pci_consinit.c,v 1.1 2025/03/09 01:06:42 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995, 1996, 1997 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include "opt_kgdb.h"
     31 
     32 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     33 
     34 __KERNEL_RCSID(0, "$NetBSD: pci_consinit.c,v 1.1 2025/03/09 01:06:42 thorpej Exp $");
     35 
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 #include <sys/termios.h>
     39 #include <sys/time.h>
     40 #include <sys/bus.h>
     41 
     42 #include <machine/rpb.h>
     43 #include <machine/autoconf.h>
     44 
     45 #include <dev/ic/comreg.h>
     46 #include <dev/ic/comvar.h>
     47 
     48 #include <dev/ic/i8042reg.h>
     49 #include <dev/ic/pckbcvar.h>
     50 
     51 #include <dev/isa/isareg.h>
     52 #include <dev/isa/isavar.h>
     53 
     54 #include <dev/pci/pcireg.h>
     55 #include <dev/pci/pcivar.h>
     56 
     57 #include "pckbd.h"
     58 
     59 #ifndef CONSPEED
     60 #define	CONSPEED	TTYDEF_SPEED
     61 #endif
     62 static int comcnrate = CONSPEED;
     63 
     64 #ifdef KGDB
     65 #include <machine/db_machdep.h>
     66 
     67 static const char *kgdb_devlist[] = {
     68 	"com",
     69 	NULL,
     70 };
     71 #endif /* KGDB */
     72 
     73 void
     74 pci_consinit(pci_chipset_tag_t disp_pc,
     75     bus_space_tag_t disp_iot, bus_space_tag_t disp_memt,
     76     bus_space_tag_t isa_iot, bus_space_tag_t isa_memt)
     77 {
     78 	const struct ctb *ctb;
     79 
     80 	ctb = (struct ctb *)(((char *)hwrpb) + hwrpb->rpb_ctb_off);
     81 
     82 	switch (ctb->ctb_term_type) {
     83 	case CTB_PRINTERPORT:
     84 		/* serial console ... */
     85 		/* XXX */
     86 		/*
     87 		 * Delay to allow PROM putchars to complete.
     88 		 * FIFO depth * character time,
     89 		 * character time = (1000000 / (defaultrate / 10))
     90 		 */
     91 		DELAY(160000000 / comcnrate);
     92 
     93 		if (comcnattach(isa_iot, 0x3f8, comcnrate, COM_FREQ,
     94 				COM_TYPE_NORMAL,
     95 				(TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
     96 			panic("can't init serial console");
     97 		}
     98 		break;
     99 
    100 	case CTB_GRAPHICS:
    101 #if NPCKBD > 0
    102 		/* display console ... */
    103 		/* XXX */
    104 		(void) pckbc_cnattach(isa_iot, IO_KBD, KBCMDP,
    105 		    PCKBC_KBD_SLOT, 0);
    106 
    107 		switch (CTB_TURBOSLOT_TYPE(ctb->ctb_turboslot)) {
    108 		case CTB_TURBOSLOT_TYPE_ISA:
    109 		case CTB_TURBOSLOT_TYPE_EISA:
    110 			isa_display_console(isa_iot, isa_memt);
    111 			break;
    112 
    113 		case CTB_TURBOSLOT_TYPE_PCI:
    114 		default:
    115 			pci_display_console(disp_iot, disp_memt, disp_pc,
    116 			    CTB_TURBOSLOT_BUS(ctb->ctb_turboslot),
    117 			    CTB_TURBOSLOT_SLOT(ctb->ctb_turboslot), 0);
    118 			break;
    119 		}
    120 #else
    121 		panic("not configured to use display && keyboard console");
    122 #endif
    123 		break;
    124 
    125 	default:
    126 		printf("ctb->ctb_term_type = 0x%lx\n", ctb->ctb_term_type);
    127 		printf("ctb->ctb_turboslot = 0x%lx\n", ctb->ctb_turboslot);
    128 
    129 		panic("%s: unknown console type %ld", __func__,
    130 		    ctb->ctb_term_type);
    131 	}
    132 #ifdef KGDB
    133 	/* Attach the KGDB device. */
    134 	alpha_kgdb_init(kgdb_devlist, isa_iot);
    135 #endif /* KGDB */
    136 }
    137