sys/arch/ibmnws/pci/pci_machdep.c

   1 /*      $NetBSD: pci_machdep.c,v 1.12 2001/06/19 11:56:27 nonaka Exp $  */
   2
   3 /*
   4  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   5  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Charles M. Hannum.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Machine-specific functions for PCI autoconfiguration.
  35  *
  36  * On PCs, there are two methods of generating PCI configuration cycles.
  37  * We try to detect the appropriate mechanism for this machine and set
  38  * up a few function pointers to access the correct method directly.
  39  */
  40
  41 #include <sys/types.h>
  42 #include <sys/param.h>
  43 #include <sys/time.h>
  44 #include <sys/systm.h>
  45 #include <sys/errno.h>
  46 #include <sys/extent.h>
  47 #include <sys/device.h>
  48
  49 #include <uvm/uvm_extern.h>
  50
  51 #define _POWERPC_BUS_DMA_PRIVATE
  52 #include <machine/bus.h>
  53 #include <machine/intr.h>
  54
  55 #include <dev/isa/isavar.h>
  56
  57 #include <dev/pci/pcivar.h>
  58 #include <dev/pci/pcireg.h>
  59 #include <dev/pci/pcidevs.h>
  60 #include <dev/pci/pciconf.h>
  61
  62 void
  63 ibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)
  64 {
  65
  66         pc->pc_conf_v = (void *)pc;
  67
  68         pc->pc_attach_hook = genppc_pci_indirect_attach_hook;
  69         pc->pc_bus_maxdevs = ibmnws_pci_bus_maxdevs;
  70         pc->pc_make_tag = genppc_pci_indirect_make_tag;
  71         pc->pc_conf_read = genppc_pci_indirect_conf_read;
  72         pc->pc_conf_write = genppc_pci_indirect_conf_write;
  73
  74         pc->pc_intr_v = (void *)pc;
  75
  76         pc->pc_intr_map = genppc_pci_intr_map;
  77         pc->pc_intr_string = genppc_pci_intr_string;
  78         pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
  79         pc->pc_intr_establish = genppc_pci_intr_establish;
  80         pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
  81
  82         pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
  83         pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag;
  84         pc->pc_conf_hook = ibmnws_pci_conf_hook;
  85
  86         pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4);
  87         pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4);
  88         pc->pc_bus = 0;
  89         pc->pc_node = 0;
  90         pc->pc_memt = 0;
  91         pc->pc_iot = 0;
  92 }
  93
  94 int
  95 ibmnws_pci_bus_maxdevs(pci_chipset_tag_t pct, int busno)
  96 {
  97
  98         /*
  99          * Bus number is irrelevant.  Configuration Mechanism 1 is in
 100          * use, can have devices 0-32 (i.e. the `normal' range).
 101          */
 102         return (32);
 103 }
 104
 105 int
 106 ibmnws_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, int func, pcireg_t id)
 107 {
 108
 109         /*
 110          * The P9100 board found in some IBM machines cannot be
 111          * over-configured.
 112          */
 113         if (PCI_VENDOR(id) == PCI_VENDOR_WEITEK &&
 114             PCI_PRODUCT(id) == PCI_PRODUCT_WEITEK_P9100)
 115                 return 0;
 116
 117         return (PCI_CONF_DEFAULT);
 118 }