sys/arch/evbmips/alchemy/dbau1500.c

   1 /* $NetBSD: dbau1500.c,v 1.2 2006/02/12 06:43:03 gdamore 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 1.2 2006/02/12 06:43:03 gdamore Exp $");
  36
  37 #include <sys/param.h>
  38 #include <machine/bus.h>
  39 #include <machine/locore.h>
  40 #include <evbmips/alchemy/obiovar.h>
  41 #include <evbmips/alchemy/board.h>
  42 #include <evbmips/alchemy/dbau1500reg.h>
  43
  44 #define GET16(x)        \
  45         (*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)))
  46 #define PUT16(x, v)     \
  47         (*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)) = (v))
  48
  49 static void dbau1500_init(void);
  50 static int dbau1500_pci_intr_map(struct pci_attach_args *,
  51                                  pci_intr_handle_t *);
  52 static void dbau1500_reboot(void);
  53
  54 static const struct obiodev dbau1500_devices[] = {
  55 #if 0
  56         { "aupcmcia", -1, -1 },
  57         { "auaudio", -1, -1 },
  58 #endif
  59         { NULL },
  60 };
  61
  62 static struct alchemy_board dbau1500_info = {
  63         "AMD Alchemy DBAu1500",
  64         dbau1500_devices,
  65         dbau1500_init,
  66         dbau1500_pci_intr_map,
  67         dbau1500_reboot,
  68         NULL,   /* poweroff */
  69 };
  70
  71 const struct alchemy_board *
  72 board_info(void)
  73 {
  74
  75         return &dbau1500_info;
  76 }
  77
  78 void
  79 dbau1500_init(void)
  80 {
  81         uint32_t        whoami;
  82
  83         if (MIPS_PRID_COPTS(cpu_id) != MIPS_AU1500)
  84                 panic("dbau1500: CPU not an AU1500!");
  85
  86         /* check the whoami register for a match */
  87         whoami = *((volatile uint32_t *)MIPS_PHYS_TO_KSEG1(DBAU1500_WHOAMI));
  88
  89         if (DBAU1500_WHOAMI_BOARD(whoami) != DBAU1500_WHOAMI_DBAU1500)
  90                 panic("dbau1500: WHOAMI (%x) not DBAu1500!", whoami);
  91
  92         printf("DBAu1500 (zinfandel), CPLDv%d, ",
  93             DBAU1500_WHOAMI_CPLD(whoami));
  94
  95         if (DBAU1500_WHOAMI_DAUGHTER(whoami) != 0xf)
  96                 printf("daughtercard 0x%x\n",
  97                     DBAU1500_WHOAMI_DAUGHTER(whoami));
  98         else
  99                 printf("no daughtercard\n");
 100
 101         /* leave console and clocks alone -- YAMON should have got it right! */
 102 }
 103
 104 int
 105 dbau1500_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
 106 {
 107         /*
 108          * This platform has PCI slot and IDE interrupts mapped
 109          * identically.  So we just need to look at which of the four
 110          * PCI interrupts it is.
 111          */
 112
 113         switch (pa->pa_intrpin) {
 114         case 0:
 115                 /* not used */
 116                 return 1;
 117         case 1:
 118                 *ihp = 1;
 119                 break;
 120         case 2:
 121                 *ihp = 2;
 122                 break;
 123         case 3:
 124                 *ihp = 4;
 125                 break;
 126         case 4:
 127                 *ihp = 5;
 128                 break;
 129         default:
 130                 printf("pci: bad interrupt pin %d\n", pa->pa_intrpin);
 131                 return 1;
 132         }
 133         return 0;
 134 }
 135
 136 void
 137 dbau1500_reboot(void)
 138 {
 139         PUT16(DBAU1500_SOFTWARE_RESET, 0);
 140         delay(100000);  /* 100 msec */
 141 }