| Ivo van Doorn | 9467d64 | 2007-05-11 15:59:40 -0400 | [diff] [blame] | 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 & 93c66. |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * EEPROM operation defines. |
| 29 | */ |
| 30 | #define PCI_EEPROM_WIDTH_93C46 6 |
| 31 | #define PCI_EEPROM_WIDTH_93C66 8 |
| 32 | #define PCI_EEPROM_WIDTH_OPCODE 3 |
| 33 | #define PCI_EEPROM_WRITE_OPCODE 0x05 |
| 34 | #define PCI_EEPROM_READ_OPCODE 0x06 |
| 35 | #define PCI_EEPROM_EWDS_OPCODE 0x10 |
| 36 | #define PCI_EEPROM_EWEN_OPCODE 0x13 |
| 37 | |
| 38 | /** |
| 39 | * struct eeprom_93cx6 - control structure for setting the commands |
| 40 | * for reading the eeprom data. |
| 41 | * @data: private pointer for the driver. |
| 42 | * @register_read(struct eeprom_93cx6 *eeprom): handler to |
| 43 | * read the eeprom register, this function should set all reg_* fields. |
| 44 | * @register_write(struct eeprom_93cx6 *eeprom): handler to |
| 45 | * write to the eeprom register by using all reg_* fields. |
| 46 | * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines |
| 47 | * @reg_data_in: register field to indicate data input |
| 48 | * @reg_data_out: register field to indicate data output |
| 49 | * @reg_data_clock: register field to set the data clock |
| 50 | * @reg_chip_select: register field to set the chip select |
| 51 | * |
| 52 | * This structure is used for the communication between the driver |
| 53 | * and the eeprom_93cx6 handlers for reading the eeprom. |
| 54 | */ |
| 55 | struct eeprom_93cx6 { |
| 56 | void *data; |
| 57 | |
| 58 | void (*register_read)(struct eeprom_93cx6 *eeprom); |
| 59 | void (*register_write)(struct eeprom_93cx6 *eeprom); |
| 60 | |
| 61 | int width; |
| 62 | |
| 63 | char reg_data_in; |
| 64 | char reg_data_out; |
| 65 | char reg_data_clock; |
| 66 | char reg_chip_select; |
| 67 | }; |
| 68 | |
| 69 | extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom, |
| 70 | const u8 word, u16 *data); |
| 71 | extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom, |
| 72 | const u8 word, __le16 *data, const u16 words); |