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DDC/I2C/SMBus overhaul (incomplete, commit for the night)

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RichardG867
2020-11-20 01:22:04 -03:00
parent 833635afaa
commit 886dbe09ea
18 changed files with 1368 additions and 1132 deletions
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src/include/86box/i2c.h Normal file
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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Definitions for the I2C handler.
*
*
*
* Authors: RichardG, <richardg867@gmail.com>
*
* Copyright 2020 RichardG.
*/
#ifndef EMU_I2C_H
# define EMU_I2C_H
/* i2c.c */
extern void *i2c_smbus;
/* i2c.c */
extern void *i2c_addbus(char *name);
extern void i2c_removebus(void *bus_handle);
extern void i2c_sethandler(void *bus_handle, uint8_t base, int size,
void (*read_quick)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint16_t (*read_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint8_t (*read_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void (*write_quick)(void *bus, uint8_t addr, void *priv),
void (*write_byte)(void *bus, uint8_t addr, uint8_t val, void *priv),
void (*write_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t val, void *priv),
void (*write_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint16_t val, void *priv),
void (*write_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void *priv);
extern void i2c_removehandler(void *bus_handle, uint8_t base, int size,
void (*read_quick)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint16_t (*read_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint8_t (*read_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void (*write_quick)(void *bus, uint8_t addr, void *priv),
void (*write_byte)(void *bus, uint8_t addr, uint8_t val, void *priv),
void (*write_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t val, void *priv),
void (*write_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint16_t val, void *priv),
void (*write_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void *priv);
extern void i2c_handler(int set, void *bus_handle, uint8_t base, int size,
void (*read_quick)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte)(void *bus, uint8_t addr, void *priv),
uint8_t (*read_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint16_t (*read_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, void *priv),
uint8_t (*read_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void (*write_quick)(void *bus, uint8_t addr, void *priv),
void (*write_byte)(void *bus, uint8_t addr, uint8_t val, void *priv),
void (*write_byte_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t val, void *priv),
void (*write_word_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint16_t val, void *priv),
void (*write_block_cmd)(void *bus, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len, void *priv),
void *priv);
extern uint8_t i2c_has_device(void *bus_handle, uint8_t addr);
extern void i2c_read_quick(void *bus_handle, uint8_t addr);
extern uint8_t i2c_read_byte(void *bus_handle, uint8_t addr);
extern uint8_t i2c_read_byte_cmd(void *bus_handle, uint8_t addr, uint8_t cmd);
extern uint16_t i2c_read_word_cmd(void *bus_handle, uint8_t addr, uint8_t cmd);
extern uint8_t i2c_read_block_cmd(void *bus_handle, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len);
extern void i2c_write_quick(void *bus_handle, uint8_t addr);
extern void i2c_write_byte(void *bus_handle, uint8_t addr, uint8_t val);
extern void i2c_write_byte_cmd(void *bus_handle, uint8_t addr, uint8_t cmd, uint8_t val);
extern void i2c_write_word_cmd(void *bus_handle, uint8_t addr, uint8_t cmd, uint16_t val);
extern void i2c_write_block_cmd(void *bus_handle, uint8_t addr, uint8_t cmd, uint8_t *data, uint8_t len);
/* i2c_gpio.c */
extern void *i2c_gpio_init(char *bus_name);
extern void i2c_gpio_close(void *dev_handle);
extern void i2c_gpio_set(void *dev_handle, uint8_t scl, uint8_t sda);
extern uint8_t i2c_gpio_get_scl(void *dev_handle);
extern uint8_t i2c_gpio_get_sda(void *dev_handle);
extern void *i2c_gpio_get_bus();
#endif /*EMU_I2C_H*/