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