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I2C overhaul part 4: VIA and EEPROM edition

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This commit is contained in:
RichardG867
2020-11-22 00:19:13 -03:00
parent d5867928d6
commit 3fb4727483
11 changed files with 313 additions and 129 deletions
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11
src/include/86box/i2c.h
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@@ -25,36 +25,37 @@ extern void *i2c_smbus;
/* i2c.c */
extern void *i2c_addbus(char *name);
extern void i2c_removebus(void *bus_handle);
extern char *i2c_getbusname(void *bus_handle);
extern void i2c_sethandler(void *bus_handle, uint8_t base, int size,
void (*start)(void *bus, uint8_t addr, void *priv),
uint8_t (*start)(void *bus, uint8_t addr, uint8_t read, void *priv),
uint8_t (*read)(void *bus, uint8_t addr, void *priv),
uint8_t (*write)(void *bus, uint8_t addr, uint8_t data, void *priv),
void (*stop)(void *bus, uint8_t addr, void *priv),
void *priv);
extern void i2c_removehandler(void *bus_handle, uint8_t base, int size,
void (*start)(void *bus, uint8_t addr, void *priv),
uint8_t (*start)(void *bus, uint8_t addr, uint8_t read, void *priv),
uint8_t (*read)(void *bus, uint8_t addr, void *priv),
uint8_t (*write)(void *bus, uint8_t addr, uint8_t data, void *priv),
void (*stop)(void *bus, uint8_t addr, void *priv),
void *priv);
extern void i2c_handler(int set, void *bus_handle, uint8_t base, int size,
void (*start)(void *bus, uint8_t addr, void *priv),
uint8_t (*start)(void *bus, uint8_t addr, uint8_t read, void *priv),
uint8_t (*read)(void *bus, uint8_t addr, void *priv),
uint8_t (*write)(void *bus, uint8_t addr, uint8_t data, void *priv),
void (*stop)(void *bus, uint8_t addr, void *priv),
void *priv);
extern uint8_t i2c_has_device(void *bus_handle, uint8_t addr);
extern void i2c_start(void *bus_handle, uint8_t addr);
extern uint8_t i2c_start(void *bus_handle, uint8_t addr, uint8_t read);
extern uint8_t i2c_read(void *bus_handle, uint8_t addr);
extern uint8_t i2c_write(void *bus_handle, uint8_t addr, uint8_t data);
extern void i2c_stop(void *bus_handle, uint8_t addr);
/* i2c_eeprom.c */
extern void *i2c_eeprom_init(void *i2c, uint8_t addr, uint8_t *data, uint16_t size, uint8_t writable);
extern void *i2c_eeprom_init(void *i2c, uint8_t addr, uint8_t *data, uint32_t size, uint8_t writable);
extern void i2c_eeprom_close(void *dev_handle);
/* i2c_gpio.c */

14
src/include/86box/smbus_piix4.h
View File

@@ -19,15 +19,20 @@
#define SMBUS_PIIX4_BLOCK_DATA_SIZE 32
#define SMBUS_PIIX4_BLOCK_DATA_MASK (SMBUS_PIIX4_BLOCK_DATA_SIZE - 1)
typedef struct
{
enum {
SMBUS_PIIX4 = 0,
SMBUS_VIA
};
typedef struct {
uint32_t local;
uint16_t io_base;
uint8_t stat, next_stat, ctl, cmd, addr,
data0, data1,
index,
data[SMBUS_PIIX4_BLOCK_DATA_SIZE];
index, data[SMBUS_PIIX4_BLOCK_DATA_SIZE];
pc_timer_t response_timer;
void *i2c;
} smbus_piix4_t;
@@ -38,6 +43,7 @@ extern void smbus_piix4_remap(smbus_piix4_t *dev, uint16_t new_io_base, uint8_t
#ifdef EMU_DEVICE_H
extern const device_t piix4_smbus_device;
extern const device_t via_smbus_device;
#endif