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1 | /* |
2 | Copyright (C) 2004 - 2006 rt2x00 SourceForge Project |
3 | <http://rt2x00.serialmonkey.com> |
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 |
17 | Free Software Foundation, Inc., |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
19 | */ |
20 | |
21 | /* |
22 | Module: eeprom_93cx6 |
23 | Abstract: EEPROM reader datastructures for 93cx6 chipsets. |
24 | Supported chipsets: 93c46, 93c56 and 93c66. |
25 | */ |
26 | |
27 | /* |
28 | * EEPROM operation defines. |
29 | */ |
30 | #define PCI_EEPROM_WIDTH_93C46 6 |
31 | #define PCI_EEPROM_WIDTH_93C56 8 |
32 | #define PCI_EEPROM_WIDTH_93C66 8 |
33 | #define PCI_EEPROM_WIDTH_93C86 8 |
34 | #define PCI_EEPROM_WIDTH_OPCODE 3 |
35 | #define PCI_EEPROM_WRITE_OPCODE 0x05 |
36 | #define PCI_EEPROM_ERASE_OPCODE 0x07 |
37 | #define PCI_EEPROM_READ_OPCODE 0x06 |
38 | #define PCI_EEPROM_EWDS_OPCODE 0x10 |
39 | #define PCI_EEPROM_EWEN_OPCODE 0x13 |
40 | |
41 | /** |
42 | * struct eeprom_93cx6 - control structure for setting the commands |
43 | * for reading the eeprom data. |
44 | * @data: private pointer for the driver. |
45 | * @register_read(struct eeprom_93cx6 *eeprom): handler to |
46 | * read the eeprom register, this function should set all reg_* fields. |
47 | * @register_write(struct eeprom_93cx6 *eeprom): handler to |
48 | * write to the eeprom register by using all reg_* fields. |
49 | * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines |
50 | * @drive_data: Set if we're driving the data line. |
51 | * @reg_data_in: register field to indicate data input |
52 | * @reg_data_out: register field to indicate data output |
53 | * @reg_data_clock: register field to set the data clock |
54 | * @reg_chip_select: register field to set the chip select |
55 | * |
56 | * This structure is used for the communication between the driver |
57 | * and the eeprom_93cx6 handlers for reading the eeprom. |
58 | */ |
59 | struct eeprom_93cx6 { |
60 | void *data; |
61 | |
62 | void (*register_read)(struct eeprom_93cx6 *eeprom); |
63 | void (*register_write)(struct eeprom_93cx6 *eeprom); |
64 | |
65 | int width; |
66 | |
67 | char drive_data; |
68 | char reg_data_in; |
69 | char reg_data_out; |
70 | char reg_data_clock; |
71 | char reg_chip_select; |
72 | }; |
73 | |
74 | extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom, |
75 | const u8 word, u16 *data); |
76 | extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom, |
77 | const u8 word, __le16 *data, const u16 words); |
78 | |
79 | extern void eeprom_93cx6_wren(struct eeprom_93cx6 *eeprom, bool enable); |
80 | |
81 | extern void eeprom_93cx6_write(struct eeprom_93cx6 *eeprom, |
82 | u8 addr, u16 data); |
83 |
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