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      1 /* $NetBSD: dbau1500.c,v 1.8 2015/06/09 22:49:55 matt Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Garrett D'Amore for Itronix Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     28  * ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: dbau1500.c,v 1.8 2015/06/09 22:49:55 matt Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/bus.h>
     39 #include <sys/cpu.h>
     40 
     41 #include <mips/locore.h>
     42 
     43 #include <evbmips/alchemy/obiovar.h>
     44 #include <evbmips/alchemy/board.h>
     45 #include <evbmips/alchemy/dbau1500reg.h>
     46 
     47 #define	GET16(x)	\
     48 	(*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)))
     49 #define	PUT16(x, v)	\
     50 	(*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)) = (v))
     51 
     52 static void dbau1500_init(void);
     53 static int dbau1500_pci_intr_map(const struct pci_attach_args *,
     54 				 pci_intr_handle_t *);
     55 static void dbau1500_reboot(void);
     56 
     57 static const struct obiodev dbau1500_devices[] = {
     58 #if 0
     59 	{ "aupcmcia", -1, -1 },
     60 	{ "auaudio", -1, -1 },
     61 #endif
     62 	{ NULL },
     63 };
     64 
     65 static struct alchemy_board dbau1500_info = {
     66 	"AMD Alchemy DBAu1500",
     67 	dbau1500_devices,
     68 	dbau1500_init,
     69 	dbau1500_pci_intr_map,
     70 	dbau1500_reboot,
     71 	NULL,	/* poweroff */
     72 };
     73 
     74 const struct alchemy_board *
     75 board_info(void)
     76 {
     77 
     78 	return &dbau1500_info;
     79 }
     80 
     81 void
     82 dbau1500_init(void)
     83 {
     84 	uint32_t	whoami;
     85 
     86 	if (MIPS_PRID_COPTS(mips_options.mips_cpu_id) != MIPS_AU1500)
     87 		panic("dbau1500: CPU not an AU1500!");
     88 
     89 	/* check the whoami register for a match */
     90 	whoami = *((volatile uint32_t *)MIPS_PHYS_TO_KSEG1(DBAU1500_WHOAMI));
     91 
     92 	if (DBAU1500_WHOAMI_BOARD(whoami) != DBAU1500_WHOAMI_DBAU1500)
     93 		panic("dbau1500: WHOAMI (%x) not DBAu1500!", whoami);
     94 
     95 	printf("DBAu1500 (zinfandel), CPLDv%d, ",
     96 	    DBAU1500_WHOAMI_CPLD(whoami));
     97 
     98 	if (DBAU1500_WHOAMI_DAUGHTER(whoami) != 0xf)
     99 		printf("daughtercard 0x%x\n",
    100 		    DBAU1500_WHOAMI_DAUGHTER(whoami));
    101 	else
    102 		printf("no daughtercard\n");
    103 
    104 	/* leave console and clocks alone -- YAMON should have got it right! */
    105 }
    106 
    107 int
    108 dbau1500_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
    109 {
    110 	/*
    111 	 * This platform has PCI slot and IDE interrupts mapped
    112 	 * identically.  So we just need to look at which of the four
    113 	 * PCI interrupts it is.
    114 	 */
    115 
    116 	switch (pa->pa_intrpin) {
    117 	case 0:
    118 		/* not used */
    119 		return 1;
    120 	case 1:
    121 		*ihp = 1;
    122 		break;
    123 	case 2:
    124 		*ihp = 2;
    125 		break;
    126 	case 3:
    127 		*ihp = 4;
    128 		break;
    129 	case 4:
    130 		*ihp = 5;
    131 		break;
    132 	default:
    133 		printf("pci: bad interrupt pin %d\n", pa->pa_intrpin);
    134 		return 1;
    135 	}
    136 	return 0;
    137 }
    138 
    139 void
    140 dbau1500_reboot(void)
    141 {
    142 	PUT16(DBAU1500_SOFTWARE_RESET, 0);
    143 	delay(100000);	/* 100 msec */
    144 }
    145