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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 86 | f9daq | 1 | //**************************************************************************** |
| 2 | // Copyright (C) 2000-2004 ARW Elektronik Germany |
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| 3 | // |
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| 4 | // |
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| 5 | // This program is free software; you can redistribute it and/or modify |
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| 6 | // it under the terms of the GNU General Public License as published by |
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| 7 | // the Free Software Foundation; either version 2 of the License, or |
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| 8 | // (at your option) any later version. |
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| 9 | // |
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| 10 | // This program is distributed in the hope that it will be useful, |
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| 11 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | // GNU General Public License for more details. |
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| 14 | // |
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| 15 | // You should have received a copy of the GNU General Public License |
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| 16 | // along with this program; if not, write to the Free Software |
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| 17 | // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 18 | // |
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| 19 | // This product is not authorized for use as critical component in |
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| 20 | // life support systems without the express written approval of |
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| 21 | // ARW Elektronik Germany. |
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| 22 | // |
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| 23 | // Please announce changes and hints to ARW Elektronik |
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| 24 | // |
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| 25 | // Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de) |
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| 26 | // |
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| 27 | //**************************************************************************** |
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| 28 | |||
| 29 | //**************************************************************************** |
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| 30 | // |
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| 31 | // plxbug.c -- plx 9050 bug fix code the PCICC32 PCI to CAMAC Interface |
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| 32 | // |
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| 33 | // $Log: plxbug.c,v $ |
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| 34 | // Revision 1.7 2004/08/12 19:59:19 klaus |
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| 35 | // conversion to kernel-version 2.6, released version 6.0 |
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| 36 | // |
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| 37 | // Revision 1.6 2003/05/11 11:12:03 klaus |
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| 38 | // matched to kernel 2.4 PCI handling, debug messages improved |
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| 39 | // |
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| 40 | // Revision 1.5 2002/10/08 18:01:46 klaus |
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| 41 | // corrections mainly for use with kernel 2.2.19 |
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| 42 | // |
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| 43 | // Revision 1.4 2001/11/20 20:12:50 klaus |
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| 44 | // included new header and CVS log |
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| 45 | // |
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| 46 | // |
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| 47 | // first steps AR 18.02.2000 |
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| 48 | // MODVERSIONS included AR 24.04.2000 |
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| 49 | // |
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| 50 | //**************************************************************************** |
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| 51 | |||
| 52 | #include "common.h" /* must be the first include */ |
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| 53 | |||
| 54 | #include <linux/kernel.h> /* printk() */ |
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| 55 | #include <asm/types.h> |
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| 56 | #include "plxbug.h" |
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| 57 | |||
| 58 | /*------------------------------------------------------------------------- |
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| 59 | // DEFINES |
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| 60 | */ |
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| 61 | #define PCR_MEMORY_BUG 0x00 // 1st PCR index of potential bug |
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| 62 | #define PCR_IO_BUG 0x01 // 2nd PCR index of potential bug |
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| 63 | #define PCR_MEMORY_OK 0x04 // 1st PCR index of no bug |
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| 64 | #define PCR_IO_OK 0x05 // 2nd PCR index of no bug |
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| 65 | |||
| 66 | /*------------------------------------------------------------------------- |
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| 67 | // EXTERNALS |
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| 68 | */ |
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| 69 | |||
| 70 | /*--------------------------------------------------------------- |
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| 71 | // function to call for bug fix |
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| 72 | */ |
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| 73 | |||
| 74 | /* fixes address of LCR through change in address windows - updates PCIConfigHeader |
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| 75 | */ |
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| 76 | void PLX9050BugFix(PCIConfigHeader *pHeader) |
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| 77 | { |
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| 78 | __u32 dwDataBug; |
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| 79 | __u32 dwDataOK; |
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| 80 | int ret = 0; |
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| 81 | |||
| 82 | DPRINTK(KERN_DEBUG "pcicc32 : PLX9050BugFix()\n"); |
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| 83 | |||
| 84 | if (pHeader->desc[PCR_MEMORY_BUG].base_address & 0x80) |
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| 85 | { |
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| 86 | if ((ret = pci_read_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_0, &dwDataBug))) |
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| 87 | goto label; |
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| 88 | if ((ret = pci_read_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_4, &dwDataOK))) |
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| 89 | goto label; |
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| 90 | |||
| 91 | if ((ret = pci_write_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_0, dwDataOK))) |
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| 92 | goto label; |
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| 93 | if ((ret = pci_write_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_4, dwDataBug))) |
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| 94 | goto label; |
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| 95 | |||
| 96 | dwDataBug = pHeader->desc[PCR_MEMORY_BUG].base_address; |
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| 97 | dwDataOK = pHeader->desc[PCR_MEMORY_OK].base_address; |
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| 98 | |||
| 99 | pHeader->desc[PCR_MEMORY_BUG].base_address = dwDataOK; |
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| 100 | pHeader->desc[PCR_MEMORY_OK].base_address = dwDataBug; |
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| 101 | } |
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| 102 | |||
| 103 | if (pHeader->desc[PCR_IO_BUG].base_address & 0x80) |
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| 104 | { |
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| 105 | if ((ret = pci_read_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_1, &dwDataBug))) |
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| 106 | goto label; |
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| 107 | if ((ret = pci_read_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_5, &dwDataOK))) |
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| 108 | goto label; |
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| 109 | |||
| 110 | if ((ret = pci_write_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_1, dwDataOK))) |
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| 111 | goto label; |
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| 112 | if ((ret = pci_write_config_dword(pHeader->PCI_dev, PCI_BASE_ADDRESS_5, dwDataBug))) |
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| 113 | goto label; |
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| 114 | |||
| 115 | dwDataBug = pHeader->desc[PCR_IO_BUG].base_address; |
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| 116 | dwDataOK = pHeader->desc[PCR_IO_OK].base_address; |
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| 117 | |||
| 118 | pHeader->desc[PCR_IO_BUG].base_address = dwDataOK; |
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| 119 | pHeader->desc[PCR_IO_OK].base_address = dwDataBug; |
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| 120 | } |
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| 121 | |||
| 122 | return; |
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| 123 | |||
| 124 | label: |
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| 125 | printk(KERN_ERR "pcicc32 : PLX9050BugFix() : PCI-error %d!\n", ret); |
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| 126 | return; |
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| 127 | } |
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| 128 |