74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/*
|
||
|
|
Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
|
||
|
|
<http://rt2x00.serialmonkey.com>
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
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 - control structure for setting the commands
|
||
|
|
* for reading the eeprom data.
|
||
|
|
* @data: private pointer for the driver.
|
||
|
|
* @register_read(struct eeprom_93cx6 *eeprom): handler to
|
||
|
|
* read the eeprom register, this function should set all reg_* fields.
|
||
|
|
* @register_write(struct eeprom_93cx6 *eeprom): handler to
|
||
|
|
* write to the eeprom register by using all reg_* fields.
|
||
|
|
* @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
|
||
|
|
* @drive_data: Set if we're driving the data line.
|
||
|
|
* @reg_data_in: register field to indicate data input
|
||
|
|
* @reg_data_out: register field to indicate data output
|
||
|
|
* @reg_data_clock: register field to set the data clock
|
||
|
|
* @reg_chip_select: register field to set the chip select
|
||
|
|
*
|
||
|
|
* This structure is used for the communication between the driver
|
||
|
|
* and the eeprom_93cx6 handlers for reading the eeprom.
|
||
|
|
*/
|
||
|
|
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_readb(struct eeprom_93cx6 *eeprom,
|
||
|
|
const u8 byte, u8 *data);
|
||
|
|
extern void eeprom_93cx6_multireadb(struct eeprom_93cx6 *eeprom,
|
||
|
|
const u8 byte, u8 *data, const u16 bytes);
|
||
|
|
|
||
|
|
extern void eeprom_93cx6_wren(struct eeprom_93cx6 *eeprom, bool enable);
|
||
|
|
|
||
|
|
extern void eeprom_93cx6_write(struct eeprom_93cx6 *eeprom,
|
||
|
|
u8 addr, u16 data);
|