sys/arch/evbarm/adi_brh/becc_mainbus.c

   1 /*      $NetBSD: becc_mainbus.c,v 1.1.2.3 2004/09/21 13:14:40 skrll 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 1.1.2.3 2004/09/21 13:14:40 skrll 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 <machine/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
  63 int     becc_mainbus_match(struct device *, struct cfdata *, void *);
  64 void    becc_mainbus_attach(struct device *, struct device *, void *);
  65
  66 CFATTACH_DECL(becc_mainbus, sizeof(struct becc_softc),
  67     becc_mainbus_match, becc_mainbus_attach, NULL, NULL);
  68
  69 /* There can be only one. */
  70 int     becc_mainbus_found;
  71
  72 int
  73 becc_mainbus_match(struct device *parent, struct cfdata *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
  93 void
  94 becc_mainbus_attach(struct device *parent, struct device *self, void *aux)
  95 {
  96         extern paddr_t physical_start;
  97
  98         struct becc_softc *sc = (void *) self;
  99
 100         becc_mainbus_found = 1;
 101
 102         printf(": ADI Big Endian Companion Chip, rev. %s\n",
 103             becc_revisions[becc_rev]);
 104
 105         /*
 106          * Virtual addresses for the PCI I/O, 2 PCI MEM, and
 107          * PCI CFG windows.
 108          */
 109         sc->sc_pci_io_base = BRH_PCI_IO_VBASE;
 110         sc->sc_pci_mem_base[0] = BRH_PCI_MEM1_VBASE;
 111         sc->sc_pci_mem_base[1] = BRH_PCI_MEM2_VBASE;
 112         sc->sc_pci_cfg_base = BRH_PCI_CONF_VBASE;
 113
 114         /*
 115          * Ver <= 7: There are 2 32M inbound PCI memory windows.  Direct-
 116          * map them to the first 64M of SDRAM.  We have limited SDRAM to
 117          * 64M during bootstrap in this case.
 118          *
 119          * Ver >= 8: There is a 128M inbound PCI memory window which can
 120          * cover all of SDRAM, which we obviously prefer to use.
 121          *
 122          * We map PCI:SDRAM 1:1, placing the two smaller windows after
 123          * after the larger one.
 124          */
 125         sc->sc_iwin[0].iwin_base = physical_start + 128 * 1024 * 1024;
 126         sc->sc_iwin[0].iwin_xlate = physical_start;
 127         sc->sc_iwin[1].iwin_base = sc->sc_iwin[0].iwin_base+BECC_PCI_MEM1_SIZE;
 128         sc->sc_iwin[1].iwin_xlate = physical_start + BECC_PCI_MEM1_SIZE;
 129         sc->sc_iwin[2].iwin_base = physical_start;
 130         sc->sc_iwin[2].iwin_xlate = physical_start;
 131
 132         /*
 133          * Ver <= 8: There are 2 32M outbound PCI memory windows.
 134          * Ver >= 9: There are 3 32M outbound PCI memory windows.
 135          *
 136          * One of these may be byte swapped.  We don't use the third
 137          * one available on >= Ver9.
 138          */
 139         sc->sc_owin_xlate[0] = 32U * 1024 * 1024;
 140         sc->sc_owin_xlate[1] = 32U * 1024 * 1024;
 141         sc->sc_owin_xlate[2] = 32U * 1024 * 1024;
 142
 143         /*
 144          * Map the 1M PCI I/O window to PCI I/O address 0.
 145          */
 146         sc->sc_ioout_xlate = 0;
 147
 148         /*
 149          * No platform-specific PCI interrupt routing; it's all done
 150          * in the BECC.
 151          */
 152
 153         becc_attach(sc);
 154 }