Home | History | Annotate | Line # | Download | only in adi_brh
becc_mainbus.c revision 1.1 
      1 /*	$NetBSD: becc_mainbus.c,v 1.1 2003/01/25 02:00:16 thorpej 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/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/device.h>
     47 
     48 #include <machine/autoconf.h>
     49 #include <machine/bus.h>
     50 
     51 #include <evbarm/adi_brh/brhreg.h>
     52 #include <evbarm/adi_brh/brhvar.h>
     53 
     54 #include <arm/xscale/beccreg.h>
     55 #include <arm/xscale/beccvar.h>
     56 
     57 #include <dev/pci/pcireg.h>
     58 #include <dev/pci/pcidevs.h>
     59 
     60 int	becc_mainbus_match(struct device *, struct cfdata *, void *);
     61 void	becc_mainbus_attach(struct device *, struct device *, void *);
     62 
     63 CFATTACH_DECL(becc_mainbus, sizeof(struct becc_softc),
     64     becc_mainbus_match, becc_mainbus_attach, NULL, NULL);
     65 
     66 /* There can be only one. */
     67 int	becc_mainbus_found;
     68 
     69 int
     70 becc_mainbus_match(struct device *parent, struct cfdata *cf, void *aux)
     71 {
     72 #if 0
     73 	struct mainbus_attach_args *ma = aux;
     74 #endif
     75 
     76 	if (becc_mainbus_found)
     77 		return (0);
     78 
     79 #if 1
     80 	/* XXX Shoot arch/arm/mainbus in the head. */
     81 	return (1);
     82 #else
     83 	if (strcmp(cf->cf_name, ma->ma_name) == 0)
     84 		return (1);
     85 
     86 	return (0);
     87 #endif
     88 }
     89 
     90 void
     91 becc_mainbus_attach(struct device *parent, struct device *self, void *aux)
     92 {
     93 	extern paddr_t physical_start;
     94 
     95 	struct becc_softc *sc = (void *) self;
     96 
     97 	becc_mainbus_found = 1;
     98 
     99 	printf(": ADI Big Endian Companion Chip, rev. %s\n",
    100 	    becc_revisions[becc_rev]);
    101 
    102 	/*
    103 	 * Virtual addresses for the PCI I/O, 2 PCI MEM, and
    104 	 * PCI CFG windows.
    105 	 */
    106 	sc->sc_pci_io_base = BRH_PCI_IO_VBASE;
    107 	sc->sc_pci_mem_base[0] = BRH_PCI_MEM1_VBASE;
    108 	sc->sc_pci_mem_base[1] = BRH_PCI_MEM2_VBASE;
    109 	sc->sc_pci_cfg_base = BRH_PCI_CONF_VBASE;
    110 
    111 	/*
    112 	 * Ver <= 7: There are 2 32M inbound PCI memory windows.  Direct-
    113 	 * map them to the first 64M of SDRAM.  We have limited SDRAM to
    114 	 * 64M during bootstrap in this case.
    115 	 *
    116 	 * Ver >= 8: There is a 128M inbound PCI memory window which can
    117 	 * cover all of SDRAM, which we obviously prefer to use.
    118 	 *
    119 	 * We map PCI:SDRAM 1:1, placing the two smaller windows after
    120 	 * after the larger one.
    121 	 */
    122 	sc->sc_iwin[0].iwin_base = physical_start + 128 * 1024 * 1024;
    123 	sc->sc_iwin[0].iwin_xlate = physical_start;
    124 	sc->sc_iwin[1].iwin_base = sc->sc_iwin[0].iwin_base+BECC_PCI_MEM1_SIZE;
    125 	sc->sc_iwin[1].iwin_xlate = physical_start + BECC_PCI_MEM1_SIZE;
    126 	sc->sc_iwin[2].iwin_base = physical_start;
    127 	sc->sc_iwin[2].iwin_xlate = physical_start;
    128 
    129 	/*
    130 	 * Ver <= 8: There are 2 32M outbound PCI memory windows.
    131 	 * Ver >= 9: There are 3 32M outbound PCI memory windows.
    132 	 *
    133 	 * One of these may be byte swapped.  We don't use the third
    134 	 * one available on >= Ver9.
    135 	 */
    136 	sc->sc_owin_xlate[0] = 32U * 1024 * 1024;
    137 	sc->sc_owin_xlate[1] = 32U * 1024 * 1024;
    138 	sc->sc_owin_xlate[2] = 32U * 1024 * 1024;
    139 
    140 	/*
    141 	 * Map the 1M PCI I/O window to PCI I/O address 0.
    142 	 */
    143 	sc->sc_ioout_xlate = 0;
    144 
    145 	/*
    146 	 * No platform-specific PCI interrupt routing; it's all done
    147 	 * in the BECC.
    148 	 */
    149 
    150 	becc_attach(sc);
    151 }
    152