rom/hidds/pci/pciutil.c

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: PCI utility functions
   6     Lang: english
   7 */
   8
   9 #include <exec/types.h>
  10 #include <exec/lists.h>
  11 #include <exec/memory.h>
  12 #include <proto/exec.h>
  13 #include <proto/oop.h>
  14 #include <oop/oop.h>
  15 #include <utility/utility.h>
  16 #include <hidd/pci.h>
  17
  18 #include "pci.h"
  19 #include "pciutil.h"
  20
  21 #undef  SDEBUG
  22 #undef  DEBUG
  23 #define DEBUG 0
  24 #include <aros/debug.h>
  25
  26 #undef HiddPCIDriverBase
  27 #define HiddPCIDriverBase (psd->hiddPCIDriverMB)
  28
  29 /*
  30   Fetch text descriptions of the different PCI device classes
  31 */
  32 void getPCIClassDesc( UBYTE class, UBYTE sub, UBYTE prgif, STRPTR *cdesc, STRPTR *sdesc, STRPTR *pdesc )
  33 {
  34     ULONG i;
  35
  36     *cdesc = *sdesc = *pdesc = "";
  37
  38     for (i=0;i < PCI_CLASSTABLE_LEN; i++)
  39     {
  40         if (PCI_ClassTable[i].Baseclass == class)
  41         {
  42             if ( !(**cdesc))
  43             {
  44                 *cdesc = PCI_ClassTable[i].Basedesc;
  45             }
  46             if (PCI_ClassTable[i].Subclass == sub)
  47             {
  48                 if ( !(**sdesc))
  49                 {
  50                     *sdesc = PCI_ClassTable[i].Subdesc;
  51                 }
  52                 if (PCI_ClassTable[i].Prgif == prgif)
  53                 {
  54                     if ( !(**pdesc))
  55                     {
  56                         *pdesc = PCI_ClassTable[i].Prgifdesc;
  57                     }
  58                 }
  59             }
  60         }
  61     }
  62 }
  63
  64 /*
  65  * Size a base register
  66  * Return size of the base register area
  67  */
  68 ULONG sizePCIBaseReg(OOP_Object *driver, struct pci_staticdata *psd, struct DeviceData *device, UBYTE bus, UBYTE dev, UBYTE func, UBYTE basenum )
  69 {
  70     ULONG bak,sz;
  71
  72     bak = HIDD_PCIDriver_ReadConfigLong(driver, (OOP_Object *)device, bus, dev, func, PCICS_BAR0 + (basenum << 2));
  73     HIDD_PCIDriver_WriteConfigLong(driver, (OOP_Object *)device, bus, dev, func, PCICS_BAR0 + (basenum << 2), ~0);
  74     sz = HIDD_PCIDriver_ReadConfigLong(driver, (OOP_Object *)device, bus, dev, func, PCICS_BAR0 + (basenum << 2));
  75     HIDD_PCIDriver_WriteConfigLong(driver, (OOP_Object *)device, bus, dev, func, PCICS_BAR0 + (basenum << 2), bak);
  76
  77     if ((sz & PCIBAR_MASK_TYPE) == PCIBAR_TYPE_IO)
  78     {
  79         /* This is an IO range */
  80         sz &= PCIBAR_MASK_IO;
  81         sz = ~sz;
  82         sz++;
  83         /* Upper 16 bits of result is ignored if BAR is for I/O *AND* bits 16-31 returned zero upon read */
  84         if(!(bak>>16)) sz &= 0xffff;
  85     }
  86     else
  87     {
  88         /* This is memory mapped */
  89         sz &= PCIBAR_MASK_MEM;
  90         sz = ~sz;
  91         sz++;
  92     }
  93     return (sz);
  94 }