1 /* $NetBSD: mtx-1.c,v 1.7 2011/07/10 00:03:52 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: mtx-1.c,v 1.7 2011/07/10 00:03:52 matt Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/bus.h> 39 40 #include <mips/locore.h> 41 42 #include <evbmips/alchemy/obiovar.h> 43 #include <evbmips/alchemy/board.h> 44 45 #define MTX1_RESET 0xE00001C 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 mtx1_init(void); 53 static int mtx1_pci_intr_map(const struct pci_attach_args *, 54 pci_intr_handle_t *); 55 static void mtx1_reboot(void); 56 57 static const struct obiodev mtx1_devices[] = { 58 #if 0 59 { "aupcmcia", -1, -1 }, 60 { "auaudio", -1, -1 }, 61 #endif 62 { NULL }, 63 }; 64 65 static struct alchemy_board mtx1_info = { 66 "4G Systems MTX-1", 67 mtx1_devices, 68 mtx1_init, 69 mtx1_pci_intr_map, 70 mtx1_reboot, 71 NULL, /* poweroff */ 72 }; 73 74 const struct alchemy_board * 75 board_info(void) 76 { 77 78 return &mtx1_info; 79 } 80 81 void 82 mtx1_init(void) 83 { 84 85 if (MIPS_PRID_COPTS(mips_options.mips_cpu_id) != MIPS_AU1500) 86 panic("mtx-1: CPU not an AU1500!"); 87 88 /* 89 * If we had any kind of identification registers, we could 90 * print them here. Apparently the MTX-1 doesn't have that 91 * kind of info. 92 */ 93 94 /* leave console and clocks alone -- YAMON should have got it right! */ 95 } 96 97 int 98 mtx1_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 99 { 100 /* 101 * The board has up to 4 adapters, each with two minipci slots, 102 * giving up to 8 devices. Each slot 0 is the top, and slot 1 103 * is the bottom. 104 * 105 * As these are mini PCI slots, only 2 interrupt pins can be 106 * used on each slot. 107 */ 108 static const int irqmap[8/*device*/][4/*pin*/] = { 109 { 1, 2, -1, -1 }, /* IDSEL 0 - Adapter A - Slot 0 */ 110 { 1, 2, -1, -1 }, /* IDSEL 1 - Adapter A - Slot 1 */ 111 { 4, 5, -1, -1 }, /* IDSEL 2 - Adapter B - Slot 0 */ 112 { 5, 4, -1, -1 }, /* IDSEL 3 - Adapter B - Slot 1 */ 113 114 { 1, 2, -1, -1 }, /* IDSEL 4 - Adapter C - Slot 0 */ 115 { 1, 2, -1, -1 }, /* IDSEL 5 - Adapter C - Slot 1 */ 116 { 4, 5, -1, -1 }, /* IDSEL 6 - Adapter D - Slot 0 */ 117 { 5, 4, -1, -1 }, /* IDSEL 7 - Adapter D - Slot 1 */ 118 }; 119 int pin, dev, irq; 120 121 /* if interrupt pin not used... */ 122 if ((pin = pa->pa_intrpin) == 0) 123 return 1; 124 125 if (pin > 4) { 126 printf("pci: bad interrupt pin %d\n", pin); 127 return 1; 128 } 129 130 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, NULL, &dev, NULL); 131 if ((dev < 0) || (dev > 7)) { 132 printf("pci: bad device %d\n", dev); 133 return 1; 134 } 135 136 if ((irq = irqmap[dev][pin - 1]) == -1) { 137 printf("pci: no IRQ routing for device %d pin %d\n", dev, pin); 138 return 1; 139 } 140 141 *ihp = irq; 142 return 0; 143 } 144 145 void 146 mtx1_reboot(void) 147 { 148 /* fyi, this looks like the same as the DBAu1500 reset */ 149 PUT16(MTX1_RESET , 0); 150 delay(100000); /* 100 msec */ 151 } 152