diff options
author | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-10-28 18:02:35 -0700 |
---|---|---|
committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-10-30 18:53:19 +0100 |
commit | 3e6ba4daccd9fdc451c6c4704e7d02ca6e6e85fc (patch) | |
tree | 4bcb04113b46d4d7e927d2ed27c1646d0c9b1841 /src/southbridge/intel/esb6300/smbus.h | |
parent | 3efcd2eeee8b3c68996cbe763685117eff483c08 (diff) |
Drop southbridge intel/esb6300
All mainboards using this southbridge have been removed from
the tree already.
Change-Id: I4398ef1e270bd0f36c5dd1c6ec3bfec6c2c091e6
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/12238
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge/intel/esb6300/smbus.h')
-rw-r--r-- | src/southbridge/intel/esb6300/smbus.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/src/southbridge/intel/esb6300/smbus.h b/src/southbridge/intel/esb6300/smbus.h deleted file mode 100644 index 0a944d343c..0000000000 --- a/src/southbridge/intel/esb6300/smbus.h +++ /dev/null @@ -1,100 +0,0 @@ -#include <device/smbus_def.h> - -#define SMBHSTSTAT 0x0 -#define SMBHSTCTL 0x2 -#define SMBHSTCMD 0x3 -#define SMBXMITADD 0x4 -#define SMBHSTDAT0 0x5 -#define SMBHSTDAT1 0x6 -#define SMBBLKDAT 0x7 -#define SMBTRNSADD 0x9 -#define SMBSLVDATA 0xa -#define SMLINK_PIN_CTL 0xe -#define SMBUS_PIN_CTL 0xf - -#define SMBUS_TIMEOUT (100*1000*10) - -#include <delay.h> - -static int smbus_wait_until_ready(unsigned smbus_io_base) -{ - unsigned loops = SMBUS_TIMEOUT; - unsigned char byte; - do { - udelay(100); - if (--loops == 0) - break; - byte = inb(smbus_io_base + SMBHSTSTAT); - } while(byte & 1); - return loops?0:-1; -} - -static int smbus_wait_until_done(unsigned smbus_io_base) -{ - unsigned loops = SMBUS_TIMEOUT; - unsigned char byte; - do { - udelay(100); - if (--loops == 0) - break; - byte = inb(smbus_io_base + SMBHSTSTAT); - } while((byte & 1) || (byte & ~((1<<6)|(1<<0))) == 0); - return loops?0:-1; -} - -static inline int smbus_wait_until_blk_done(unsigned smbus_io_base) -{ - unsigned loops = SMBUS_TIMEOUT; - unsigned char byte; - do { - udelay(100); - if (--loops == 0) - break; - byte = inb(smbus_io_base + SMBHSTSTAT); - } while((byte&(1<<7)) == 0); - return loops?0:-1; -} - -static int do_smbus_read_byte(unsigned smbus_io_base, unsigned device, unsigned address) -{ - unsigned char global_status_register; - unsigned char byte; - - if (smbus_wait_until_ready(smbus_io_base) < 0) { - return SMBUS_WAIT_UNTIL_READY_TIMEOUT; - } - /* setup transaction */ - /* disable interrupts */ - outb(inb(smbus_io_base + SMBHSTCTL) & (~1), smbus_io_base + SMBHSTCTL); - /* set the device I'm talking too */ - outb(((device & 0x7f) << 1) | 1, smbus_io_base + SMBXMITADD); - /* set the command/address... */ - outb(address & 0xFF, smbus_io_base + SMBHSTCMD); - /* set up for a byte data read */ - outb((inb(smbus_io_base + SMBHSTCTL) & 0xE3) | (0x2 << 2), smbus_io_base + SMBHSTCTL); - /* clear any lingering errors, so the transaction will run */ - outb(inb(smbus_io_base + SMBHSTSTAT), smbus_io_base + SMBHSTSTAT); - - /* clear the data byte...*/ - outb(0, smbus_io_base + SMBHSTDAT0); - - /* start the command */ - outb((inb(smbus_io_base + SMBHSTCTL) | 0x40), smbus_io_base + SMBHSTCTL); - - /* poll for transaction completion */ - if (smbus_wait_until_done(smbus_io_base) < 0) { - return SMBUS_WAIT_UNTIL_DONE_TIMEOUT; - } - - global_status_register = inb(smbus_io_base + SMBHSTSTAT); - - /* Ignore the In Use Status... */ - global_status_register &= ~(3 << 5); - - /* read results of transaction */ - byte = inb(smbus_io_base + SMBHSTDAT0); - if (global_status_register != (1 << 1)) { - return SMBUS_ERROR; - } - return byte; -} |