xorg-server-1.4/hw/xfree86/os-support/bus/netbsdPci.c

   1 /*
   2  * Copyright (C) 1994-2003 The XFree86 Project, Inc.  All Rights Reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE
  19  * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  20  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Except as contained in this notice, the name of the XFree86 Project
  24  * shall not be used in advertising or otherwise to promote the sale,
  25  * use or other dealings in this Software without prior written
  26  * authorization from the XFree86 Project.
  27  */
  28
  29 #ifdef HAVE_XORG_CONFIG_H
  30 #include <xorg-config.h>
  31 #endif
  32
  33 #include <sys/types.h>
  34 #include <sys/mman.h>
  35 #include <sys/ioctl.h>
  36 #include <fcntl.h>
  37 #include <stdio.h>
  38 #include <unistd.h>
  39 #include <dev/pci/pciio.h>
  40
  41 #include "xf86.h"
  42 #include "xf86Priv.h"
  43 #include "xf86OSpriv.h"
  44
  45 #include "Pci.h"
  46
  47 static CARD32 netbsdPciConfRead(PCITAG, int);
  48 static void netbsdPciConfWrite(PCITAG, int, CARD32);
  49 static void netbsdPciSetBits(PCITAG, int, CARD32, CARD32);
  50
  51 static int devpci = -1;
  52
  53 static pciBusFuncs_t netbsdFuncs0 = {
  54 /* pciReadLong      */  netbsdPciConfRead,
  55 /* pciWriteLong     */  netbsdPciConfWrite,
  56 /* pciSetBitsLong   */  netbsdPciSetBits,
  57 /* pciAddrHostToBus */  pciAddrNOOP,
  58 /* pciAddrBusToHost */  pciAddrNOOP
  59 };
  60
  61 static pciBusInfo_t netbsdPci0 = {
  62 /* configMech  */       PCI_CFG_MECH_OTHER,
  63 /* numDevices  */       32,
  64 /* secondary   */       FALSE,
  65 /* primary_bus */       0,
  66 /* funcs       */       &netbsdFuncs0,
  67 /* pciBusPriv  */       NULL,
  68 /* bridge      */       NULL
  69 };
  70
  71 void
  72 netbsdPciInit()
  73 {
  74         struct pciio_businfo pci_businfo;
  75
  76         devpci = open("/dev/pci0", O_RDWR);
  77         if (devpci == -1)
  78                 FatalError("netbsdPciInit: can't open /dev/pci0\n");
  79
  80         pciNumBuses    = 1;
  81         pciBusInfo[0]  = &netbsdPci0;
  82         pciFindFirstFP = pciGenFindFirst;
  83         pciFindNextFP  = pciGenFindNext;
  84         /* use businfo to get the number of devs */
  85         if (ioctl(devpci, PCI_IOC_BUSINFO, &pci_businfo) != 0)
  86             FatalError("netbsdPciInit: not a PCI bus device");
  87         netbsdPci0.numDevices = pci_businfo.maxdevs;
  88 }
  89
  90 static CARD32
  91 netbsdPciConfRead(PCITAG tag, int reg)
  92 {
  93         struct pciio_bdf_cfgreg bdfr;
  94
  95         bdfr.bus      = PCI_BUS_FROM_TAG(tag);
  96         bdfr.device   = PCI_DEV_FROM_TAG(tag);
  97         bdfr.function = PCI_FUNC_FROM_TAG(tag);
  98         bdfr.cfgreg.reg = reg;
  99
 100         if (ioctl(devpci, PCI_IOC_BDF_CFGREAD, &bdfr) == -1)
 101                 FatalError("netbsdPciConfRead: failed on %d/%d/%d\n",
 102                     bdfr.bus, bdfr.device, bdfr.function);
 103
 104         return (bdfr.cfgreg.val);
 105 }
 106
 107 static void
 108 netbsdPciConfWrite(PCITAG tag, int reg, CARD32 val)
 109 {
 110         struct pciio_bdf_cfgreg bdfr;
 111
 112         bdfr.bus      = PCI_BUS_FROM_TAG(tag);
 113         bdfr.device   = PCI_DEV_FROM_TAG(tag);
 114         bdfr.function = PCI_FUNC_FROM_TAG(tag);
 115         bdfr.cfgreg.reg = reg;
 116         bdfr.cfgreg.val = val;
 117
 118         if (ioctl(devpci, PCI_IOC_BDF_CFGWRITE, &bdfr) == -1)
 119                 FatalError("netbsdPciConfWrite: failed on %d/%d/%d\n",
 120                     bdfr.bus, bdfr.device, bdfr.function);
 121 }
 122
 123 static void
 124 netbsdPciSetBits(PCITAG tag, int reg, CARD32 mask, CARD32 bits)
 125 {
 126         CARD32 val;
 127
 128         val = netbsdPciConfRead(tag, reg);
 129         val = (val & ~mask) | (bits & mask);
 130         netbsdPciConfWrite(tag, reg, val);
 131 }