smbus.c File Reference

#include <inttypes.h>
#include <console/console.h>
#include <device/smbus_host.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/smbus.h>
#include <soc/southbridge.h>

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Macros
#define	SMBUS_TIMEOUT   (100 * 1000 * 10)

Functions
static u8	controller_read8 (const uintptr_t base, const u8 reg)
static void	controller_write8 (const uintptr_t base, const u8 reg, const u8 val)
static int	smbus_wait_until_ready (uintptr_t mmio)
static int	smbus_wait_until_done (uintptr_t mmio)
int	do_smbus_recv_byte (uintptr_t mmio, u8 device)
int	do_smbus_send_byte (uintptr_t mmio, u8 device, u8 val)
int	do_smbus_read_byte (uintptr_t mmio, u8 device, u8 address)
int	do_smbus_write_byte (uintptr_t mmio, u8 device, u8 address, u8 val)

Macro Definition Documentation

SMBUS_TIMEOUT

#define SMBUS_TIMEOUT   (100 * 1000 * 10)

Definition at line 14 of file smbus.c.

Function Documentation

controller_read8()

static u8 controller_read8 ( const uintptr_t  base, const u8  reg  )

static

Definition at line 19 of file smbus.c.

References base, and read8().

Referenced by do_smbus_read_byte(), do_smbus_recv_byte(), do_smbus_send_byte(), do_smbus_write_byte(), smbus_wait_until_done(), and smbus_wait_until_ready().

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controller_write8()

static void controller_write8 ( const uintptr_t  base, const u8  reg, const u8  val  )

static

Definition at line 24 of file smbus.c.

References base, val, and write8().

Referenced by do_smbus_read_byte(), do_smbus_recv_byte(), do_smbus_send_byte(), do_smbus_write_byte(), smbus_wait_until_done(), and smbus_wait_until_ready().

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do_smbus_read_byte()

int do_smbus_read_byte	(	uintptr_t	mmio,
		u8	device,
		u8	address
	)

Definition at line 121 of file smbus.c.

Referenced by lsmbus_read_byte().

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do_smbus_recv_byte()

int do_smbus_recv_byte	(	uintptr_t	mmio,
		u8	device
	)

Definition at line 71 of file smbus.c.

References controller_read8(), controller_write8(), SMBHST_CTRL_BTE_RW, SMBHST_CTRL_MODE_BITS, SMBHST_CTRL_STRT, SMBHSTADDR, SMBHSTCTRL, SMBHSTDAT0, smbus_wait_until_done(), and smbus_wait_until_ready().

Referenced by lsmbus_recv_byte(), and readspd().

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do_smbus_send_byte()

int do_smbus_send_byte	(	uintptr_t	mmio,
		u8	device,
		u8	val
	)

Definition at line 96 of file smbus.c.

References controller_read8(), controller_write8(), SMBHST_CTRL_BTE_RW, SMBHST_CTRL_MODE_BITS, SMBHST_CTRL_STRT, SMBHSTADDR, SMBHSTCTRL, SMBHSTDAT0, smbus_wait_until_done(), smbus_wait_until_ready(), and val.

Referenced by lsmbus_send_byte().

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do_smbus_write_byte()

int do_smbus_write_byte	(	uintptr_t	mmio,
		u8	device,
		u8	address,
		u8	val
	)

Definition at line 149 of file smbus.c.

smbus_wait_until_done()

static int smbus_wait_until_done ( uintptr_t  mmio )

static

Definition at line 51 of file smbus.c.

References controller_read8(), controller_write8(), SMBHST_STAT_ERROR_BITS, SMBHST_STAT_INTERRUPT, SMBHST_STAT_VAL_BITS, SMBHSTSTAT, SMBUS_TIMEOUT, and val.

Referenced by do_smbus_read_byte(), do_smbus_recv_byte(), do_smbus_send_byte(), and do_smbus_write_byte().

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smbus_wait_until_ready()

static int smbus_wait_until_ready ( uintptr_t  mmio )

static

Definition at line 29 of file smbus.c.

References acpimmio_asf, acpimmio_smbus, BIOS_ERR, controller_read8(), controller_write8(), printk, PRIxPTR, SMBHST_STAT_VAL_BITS, SMBHSTSTAT, SMBUS_TIMEOUT, and val.

Referenced by do_smbus_read_byte(), do_smbus_recv_byte(), do_smbus_send_byte(), and do_smbus_write_byte().

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