4 Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
10 Fax: +49(0)7223/9493-92
11 http://www.addi-data.com
14 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
16 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 You should also find the complete GPL in the COPYING file accompanying this source code.
25 +-----------------------------------------------------------------------+
26 | (C) ADDI-DATA GmbH Dieselstraße 3 D-77833 Ottersweier |
27 +-----------------------------------------------------------------------+
28 | Tel : +49 (0) 7223/9493-0 | email : info@addi-data.com |
29 | Fax : +49 (0) 7223/9493-92 | Internet : http://www.addi-data.com |
30 +-------------------------------+---------------------------------------+
31 | Project : ADDI HEADER READ WRITER | Compiler : Visual C++ |
32 | Module name : S5920.cpp | Version : 6.0 |
33 +-------------------------------+---------------------------------------+
34 | Author : E. LIBS Date : 02/05/2002 |
35 +-----------------------------------------------------------------------+
36 | Description : DLL with the S5920 PCI Controller functions |
37 +-----------------------------------------------------------------------+
39 +-----------------------------------------------------------------------+
40 | Date | Author | Description of updates |
41 +----------+-----------+------------------------------------------------+
42 | 28/08/02 | LIBS Eric | Add return codes each time a function of the |
43 | | | Addi Library is called |
44 +-----------------------------------------------------------------------+
45 | 31/07/03 | KRAUTH J. | Changes for the MSX-Box |
46 +-----------------------------------------------------------------------+
49 #include "addi_amcc_S5920.h"
51 /*+----------------------------------------------------------------------------+*/
52 /*| Function Name : int i_AddiHeaderRW_ReadEeprom |*/
53 /*| (int i_NbOfWordsToRead, |*/
54 /*| unsigned int dw_PCIBoardEepromAddress, |*/
55 /*| unsigned short w_EepromStartAddress, |*/
56 /*| unsigned short * pw_DataRead) |*/
57 /*+----------------------------------------------------------------------------+*/
58 /*| Task : Read word from the 5920 eeprom. |*/
59 /*+----------------------------------------------------------------------------+*/
60 /*| Input Parameters : int i_NbOfWordsToRead : Nbr. of word to read |*/
61 /*| unsigned int dw_PCIBoardEepromAddress : Address of the eeprom |*/
62 /*| unsigned short w_EepromStartAddress : Eeprom strat address |*/
63 /*+----------------------------------------------------------------------------+*/
64 /*| Output Parameters : unsigned short * pw_DataRead : Read data |*/
65 /*+----------------------------------------------------------------------------+*/
66 /*| Return Value : - |*/
67 /*+----------------------------------------------------------------------------+*/
69 int i_AddiHeaderRW_ReadEeprom(int i_NbOfWordsToRead
,
70 unsigned int dw_PCIBoardEepromAddress
,
71 unsigned short w_EepromStartAddress
, unsigned short *pw_DataRead
)
73 unsigned int dw_eeprom_busy
= 0;
77 unsigned char pb_ReadByte
[1];
78 unsigned char b_ReadLowByte
= 0;
79 unsigned char b_ReadHighByte
= 0;
80 unsigned char b_SelectedAddressLow
= 0;
81 unsigned char b_SelectedAddressHigh
= 0;
82 unsigned short w_ReadWord
= 0;
84 for (i_WordCounter
= 0; i_WordCounter
< i_NbOfWordsToRead
;
88 inl(dw_PCIBoardEepromAddress
+
90 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
91 } while (dw_eeprom_busy
== EEPROM_BUSY
);
93 for (i_Counter
= 0; i_Counter
< 2; i_Counter
++) {
94 b_SelectedAddressLow
= (w_EepromStartAddress
+ i_Counter
) % 256; /* Read the low 8 bit part */
95 b_SelectedAddressHigh
= (w_EepromStartAddress
+ i_Counter
) / 256; /* Read the high 8 bit part */
97 /* Select the load low address mode */
99 dw_PCIBoardEepromAddress
+ AMCC_OP_REG_MCSR
+
105 inl(dw_PCIBoardEepromAddress
+
107 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
108 } while (dw_eeprom_busy
== EEPROM_BUSY
);
110 /* Load the low address */
111 outb(b_SelectedAddressLow
,
112 dw_PCIBoardEepromAddress
+ AMCC_OP_REG_MCSR
+
118 inl(dw_PCIBoardEepromAddress
+
120 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
121 } while (dw_eeprom_busy
== EEPROM_BUSY
);
123 /* Select the load high address mode */
124 outb(NVCMD_LOAD_HIGH
,
125 dw_PCIBoardEepromAddress
+ AMCC_OP_REG_MCSR
+
131 inl(dw_PCIBoardEepromAddress
+
133 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
134 } while (dw_eeprom_busy
== EEPROM_BUSY
);
136 /* Load the high address */
137 outb(b_SelectedAddressHigh
,
138 dw_PCIBoardEepromAddress
+ AMCC_OP_REG_MCSR
+
144 inl(dw_PCIBoardEepromAddress
+
146 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
147 } while (dw_eeprom_busy
== EEPROM_BUSY
);
149 /* Select the READ mode */
150 outb(NVCMD_BEGIN_READ
,
151 dw_PCIBoardEepromAddress
+ AMCC_OP_REG_MCSR
+
157 inl(dw_PCIBoardEepromAddress
+
159 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
160 } while (dw_eeprom_busy
== EEPROM_BUSY
);
162 /* Read data into the EEPROM */
164 inb(dw_PCIBoardEepromAddress
+
165 AMCC_OP_REG_MCSR
+ 2);
170 inl(dw_PCIBoardEepromAddress
+
172 dw_eeprom_busy
= dw_eeprom_busy
& EEPROM_BUSY
;
173 } while (dw_eeprom_busy
== EEPROM_BUSY
);
175 /* Select the upper address part */
177 b_ReadLowByte
= pb_ReadByte
[0];
179 b_ReadHighByte
= pb_ReadByte
[0];
186 (b_ReadLowByte
| (((unsigned short)b_ReadHighByte
) *
189 pw_DataRead
[i_WordCounter
] = w_ReadWord
;
191 w_EepromStartAddress
+= 2; /* to read the next word */
193 } /* for (...) i_NbOfWordsToRead */