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  1. //****************************************************************************
  2. // Copyright (C) 2000-2004  ARW Elektronik Germany
  3. //
  4. //
  5. // This program is free software; you can redistribute it and/or modify
  6. // it under the terms of the GNU General Public License as published by
  7. // the Free Software Foundation; either version 2 of the License, or
  8. // (at your option) any later version.
  9. //
  10. // This program is distributed in the hope that it will be useful,
  11. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13. // GNU General Public License for more details.
  14. //
  15. // You should have received a copy of the GNU General Public License
  16. // along with this program; if not, write to the Free Software
  17. // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18. //
  19. // This product is not authorized for use as critical component in
  20. // life support systems without the express written approval of
  21. // ARW Elektronik Germany.
  22. //  
  23. // Please announce changes and hints to ARW Elektronik
  24. //
  25. // Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de)
  26. //
  27. //****************************************************************************
  28.  
  29. //****************************************************************************
  30. //
  31. // plxbug.c -- plx 9050 bug fix code the PCIVME PCI to VME Interface
  32. //
  33. // $Log: plxbug.c,v $
  34. // Revision 1.6  2004/08/13 19:23:26  klaus
  35. // conversion to kernel-version 2.6, released version 3.0
  36. //
  37. // Revision 1.5  2002/10/18 21:56:28  klaus
  38. // completed functional features, untested
  39. //
  40. // Revision 1.4  2002/10/18 21:56:28  klaus
  41. // completed functional features, untested
  42. //
  43. // Revision 1.3  2002/10/10 18:57:46  klaus
  44. // source beautyfied
  45. //
  46. //****************************************************************************
  47.  
  48. #include "common.h"  /* must be the first include */
  49.  
  50. #include <asm/types.h>
  51. #include "plxbug.h"
  52. #include "main.h"
  53.  
  54. /*-------------------------------------------------------------------------
  55. // DEFINES
  56. */
  57. #define PCR_MEMORY_BUG  0x00       // 1st PCR index of potential bug
  58. #define PCR_IO_BUG      0x01       // 2nd PCR index of potential bug
  59. #define PCR_MEMORY_OK   0x04       // 1st PCR index of no bug
  60. #define PCR_IO_OK       0x05       // 2nd PCR index of no bug
  61.  
  62. //-------------------------------------------------------------------------
  63. // EXTERNALS
  64.  
  65. //-------------------------------------------------------------------------
  66. // function to call for bug fix
  67.  
  68.  
  69. // fixes address of LCR through change in address windows - updates PCIConfigHeader
  70. int PLX9050BugFix(PCIConfig *pHeader)
  71. {
  72.     u32 dwDataBug;
  73.     u32 dwDataOK;  
  74.     int result = 0;
  75.  
  76.     if (pHeader->pciDev->resource[PCR_MEMORY_BUG].start & 0x80)
  77.     {
  78.         result = pci_read_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_0, &dwDataBug);
  79.         if (result)
  80.             goto fail;
  81.  
  82.         result = pci_read_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_4, &dwDataOK);
  83.         if (result)
  84.             goto fail;
  85.  
  86.         result = pci_write_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_0, dwDataOK);
  87.         if (result)
  88.             goto fail;
  89.  
  90.         result = pci_write_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_4, dwDataBug);
  91.         if (result)
  92.             goto fail;
  93.  
  94.         // put changes in structures, too
  95.         dwDataBug = pHeader->pciDev->resource[PCR_MEMORY_BUG].start;
  96.         dwDataOK  = pHeader->pciDev->resource[PCR_MEMORY_OK].start;
  97.  
  98.         pHeader->pciDev->resource[PCR_MEMORY_BUG].start = dwDataOK;
  99.         pHeader->pciDev->resource[PCR_MEMORY_OK].start  = dwDataBug;
  100.  
  101.         PRINTK(KERN_DEBUG "%s : bugfix memory done.\n", DEVICE_NAME);
  102.     }
  103.  
  104.     if (pHeader->pciDev->resource[PCR_IO_BUG].start & 0x80)
  105.     {
  106.         result = pci_read_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_1, &dwDataBug);
  107.         if (result)
  108.             goto fail;
  109.  
  110.         result = pci_read_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_5, &dwDataOK);
  111.         if (result)
  112.             goto fail;
  113.  
  114.         result = pci_write_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_1, dwDataOK);
  115.         if (result)
  116.             goto fail;
  117.  
  118.         result = pci_write_config_dword(pHeader->pciDev, PCI_BASE_ADDRESS_5, dwDataBug);
  119.         if (result)
  120.             goto fail;
  121.  
  122.         // put changes in structures, too
  123.         dwDataBug = pHeader->pciDev->resource[PCR_IO_BUG].start;
  124.         dwDataOK  = pHeader->pciDev->resource[PCR_IO_OK].start;
  125.  
  126.         pHeader->pciDev->resource[PCR_IO_BUG].start = dwDataOK;
  127.         pHeader->pciDev->resource[PCR_IO_OK].start  = dwDataBug;
  128.  
  129.         PRINTK(KERN_DEBUG "%s : bugfix io done.\n", DEVICE_NAME);
  130.     }
  131.  
  132.     fail:
  133.     if (result)
  134.         printk(KERN_ERR "%s : PCI-error %d!\n", DEVICE_NAME, result);
  135.  
  136.     return result;
  137. }
  138.  
  139.