eeprom_93cx6.h

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/*
    Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
    <http://rt2x00.serialmonkey.com>

    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.

    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.

    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.
 */

/*
    Module: eeprom_93cx6
    Abstract: EEPROM reader datastructures for 93cx6 chipsets.
    Supported chipsets: 93c46, 93c56 and 93c66.
 */

/*
 * EEPROM operation defines.
 */
#define PCI_EEPROM_WIDTH_93C46  6
#define PCI_EEPROM_WIDTH_93C56  8
#define PCI_EEPROM_WIDTH_93C66  8
#define PCI_EEPROM_WIDTH_93C86  8
#define PCI_EEPROM_WIDTH_OPCODE 3
#define PCI_EEPROM_WRITE_OPCODE 0x05
#define PCI_EEPROM_ERASE_OPCODE 0x07
#define PCI_EEPROM_READ_OPCODE  0x06
#define PCI_EEPROM_EWDS_OPCODE  0x10
#define PCI_EEPROM_EWEN_OPCODE  0x13

struct eeprom_93cx6 {
    void *data;

    void (*register_read)(struct eeprom_93cx6 *eeprom);
    void (*register_write)(struct eeprom_93cx6 *eeprom);

    int width;

    char drive_data;
    char reg_data_in;
    char reg_data_out;
    char reg_data_clock;
    char reg_chip_select;
};

extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
    const u8 word, u16 *data);
extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
    const u8 word, __le16 *data, const u16 words);

extern void eeprom_93cx6_wren(struct eeprom_93cx6 *eeprom, bool enable);

extern void eeprom_93cx6_write(struct eeprom_93cx6 *eeprom,
                   u8 addr, u16 data);