addi_amcc_S5920.c revision 25417922694e60f04cd4dc8448ada9236f18c532 
1/**
2@verbatim
3
4Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
5
6	ADDI-DATA GmbH
7	Dieselstrasse 3
8	D-77833 Ottersweier
9	Tel: +19(0)7223/9493-0
10	Fax: +49(0)7223/9493-92
11	http://www.addi-data.com
12	info@addi-data.com
13
14This 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.
15
16This 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.
17
18You 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
19
20You should also find the complete GPL in the COPYING file accompanying this source code.
21
22@endverbatim
23*/
24/*
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  +-----------------------------------------------------------------------+
38  |                             UPDATE'S                                  |
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  +-----------------------------------------------------------------------+
47*/
48
49#include "addi_amcc_S5920.h"
50
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/*+----------------------------------------------------------------------------+*/
68
69int i_AddiHeaderRW_ReadEeprom(int i_NbOfWordsToRead,
70	unsigned int dw_PCIBoardEepromAddress,
71	unsigned short w_EepromStartAddress, unsigned short *pw_DataRead)
72{
73	unsigned int dw_eeprom_busy = 0;
74	int i_Counter = 0;
75	int i_WordCounter;
76	int i;
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;
83
84	for (i_WordCounter = 0; i_WordCounter < i_NbOfWordsToRead;
85		i_WordCounter++) {
86		do {
87			dw_eeprom_busy =
88				inl(dw_PCIBoardEepromAddress +
89				AMCC_OP_REG_MCSR);
90			dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
91		} while (dw_eeprom_busy == EEPROM_BUSY);
92
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 */
96
97			/* Select the load low address mode */
98			outb(NVCMD_LOAD_LOW,
99				dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR +
100				3);
101
102			/* Wait on busy */
103			do {
104				dw_eeprom_busy =
105					inl(dw_PCIBoardEepromAddress +
106					AMCC_OP_REG_MCSR);
107				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
108			} while (dw_eeprom_busy == EEPROM_BUSY);
109
110			/* Load the low address */
111			outb(b_SelectedAddressLow,
112				dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR +
113				2);
114
115			/* Wait on busy */
116			do {
117				dw_eeprom_busy =
118					inl(dw_PCIBoardEepromAddress +
119					AMCC_OP_REG_MCSR);
120				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
121			} while (dw_eeprom_busy == EEPROM_BUSY);
122
123			/* Select the load high address mode */
124			outb(NVCMD_LOAD_HIGH,
125				dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR +
126				3);
127
128			/* Wait on busy */
129			do {
130				dw_eeprom_busy =
131					inl(dw_PCIBoardEepromAddress +
132					AMCC_OP_REG_MCSR);
133				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
134			} while (dw_eeprom_busy == EEPROM_BUSY);
135
136			/* Load the high address */
137			outb(b_SelectedAddressHigh,
138				dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR +
139				2);
140
141			/* Wait on busy */
142			do {
143				dw_eeprom_busy =
144					inl(dw_PCIBoardEepromAddress +
145					AMCC_OP_REG_MCSR);
146				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
147			} while (dw_eeprom_busy == EEPROM_BUSY);
148
149			/* Select the READ mode */
150			outb(NVCMD_BEGIN_READ,
151				dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR +
152				3);
153
154			/* Wait on busy */
155			do {
156				dw_eeprom_busy =
157					inl(dw_PCIBoardEepromAddress +
158					AMCC_OP_REG_MCSR);
159				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
160			} while (dw_eeprom_busy == EEPROM_BUSY);
161
162			/* Read data into the EEPROM */
163			*pb_ReadByte =
164				inb(dw_PCIBoardEepromAddress +
165				AMCC_OP_REG_MCSR + 2);
166
167			/* Wait on busy */
168			do {
169				dw_eeprom_busy =
170					inl(dw_PCIBoardEepromAddress +
171					AMCC_OP_REG_MCSR);
172				dw_eeprom_busy = dw_eeprom_busy & EEPROM_BUSY;
173			} while (dw_eeprom_busy == EEPROM_BUSY);
174
175			/* Select the upper address part */
176			if (i_Counter == 0)
177				b_ReadLowByte = pb_ReadByte[0];
178			else
179				b_ReadHighByte = pb_ReadByte[0];
180
181			/* Sleep */
182			msleep(1);
183
184		}
185		w_ReadWord =
186			(b_ReadLowByte | (((unsigned short)b_ReadHighByte) *
187				256));
188
189		pw_DataRead[i_WordCounter] = w_ReadWord;
190
191		w_EepromStartAddress += 2;	/*  to read the next word */
192
193	}			/*  for (...) i_NbOfWordsToRead */
194	return 0;
195}
196