1/* $NetBSD: becc_mainbus.c,v 1.4 2011/07/01 20:38:16 dyoung Exp $ */ 2 3/* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, 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. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * ``Big Red Head'' front-end for the ADI Engineering Big Endian Companion 40 * Chip. We take care of setting up the BECC memory map, which is specific 41 * to the board the BECC is wired up to. 42 */ 43 44#include <sys/cdefs.h> 45__KERNEL_RCSID(0, "$NetBSD: becc_mainbus.c,v 1.4 2011/07/01 20:38:16 dyoung Exp $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/device.h> 50 51#include <machine/autoconf.h> 52#include <sys/bus.h> 53 54#include <evbarm/adi_brh/brhreg.h> 55#include <evbarm/adi_brh/brhvar.h> 56 57#include <arm/xscale/beccreg.h> 58#include <arm/xscale/beccvar.h> 59 60#include <dev/pci/pcireg.h> 61#include <dev/pci/pcidevs.h> 62 63int becc_mainbus_match(device_t, cfdata_t, void *); 64void becc_mainbus_attach(device_t, device_t, void *); 65 66CFATTACH_DECL_NEW(becc_mainbus, sizeof(struct becc_softc), 67 becc_mainbus_match, becc_mainbus_attach, NULL, NULL); 68 69/* There can be only one. */ 70int becc_mainbus_found; 71 72int 73becc_mainbus_match(device_t parent, cfdata_t cf, void *aux) 74{ 75#if 0 76 struct mainbus_attach_args *ma = aux; 77#endif 78 79 if (becc_mainbus_found) 80 return (0); 81 82#if 1 83 /* XXX Shoot arch/arm/mainbus in the head. */ 84 return (1); 85#else 86 if (strcmp(cf->cf_name, ma->ma_name) == 0) 87 return (1); 88 89 return (0); 90#endif 91} 92 93void 94becc_mainbus_attach(device_t parent, device_t self, void *aux) 95{ 96 extern paddr_t physical_start; 97 98 struct becc_softc *sc = device_private(self); 99 100 sc->sc_dev = self; 101 102 becc_mainbus_found = 1; 103 104 printf(": ADI Big Endian Companion Chip, rev. %s\n", 105 becc_revisions[becc_rev]); 106 107 /* 108 * Virtual addresses for the PCI I/O, 2 PCI MEM, and 109 * PCI CFG windows. 110 */ 111 sc->sc_pci_io_base = BRH_PCI_IO_VBASE; 112 sc->sc_pci_mem_base[0] = BRH_PCI_MEM1_VBASE; 113 sc->sc_pci_mem_base[1] = BRH_PCI_MEM2_VBASE; 114 sc->sc_pci_cfg_base = BRH_PCI_CONF_VBASE; 115 116 /* 117 * Ver <= 7: There are 2 32M inbound PCI memory windows. Direct- 118 * map them to the first 64M of SDRAM. We have limited SDRAM to 119 * 64M during bootstrap in this case. 120 * 121 * Ver >= 8: There is a 128M inbound PCI memory window which can 122 * cover all of SDRAM, which we obviously prefer to use. 123 * 124 * We map PCI:SDRAM 1:1, placing the two smaller windows after 125 * after the larger one. 126 */ 127 sc->sc_iwin[0].iwin_base = physical_start + 128 * 1024 * 1024; 128 sc->sc_iwin[0].iwin_xlate = physical_start; 129 sc->sc_iwin[1].iwin_base = sc->sc_iwin[0].iwin_base+BECC_PCI_MEM1_SIZE; 130 sc->sc_iwin[1].iwin_xlate = physical_start + BECC_PCI_MEM1_SIZE; 131 sc->sc_iwin[2].iwin_base = physical_start; 132 sc->sc_iwin[2].iwin_xlate = physical_start; 133 134 /* 135 * Ver <= 8: There are 2 32M outbound PCI memory windows. 136 * Ver >= 9: There are 3 32M outbound PCI memory windows. 137 * 138 * One of these may be byte swapped. We don't use the third 139 * one available on >= Ver9. 140 */ 141 sc->sc_owin_xlate[0] = 32U * 1024 * 1024; 142 sc->sc_owin_xlate[1] = 32U * 1024 * 1024; 143 sc->sc_owin_xlate[2] = 32U * 1024 * 1024; 144 145 /* 146 * Map the 1M PCI I/O window to PCI I/O address 0. 147 */ 148 sc->sc_ioout_xlate = 0; 149 150 /* 151 * No platform-specific PCI interrupt routing; it's all done 152 * in the BECC. 153 */ 154 155 becc_attach(sc); 156} 157