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Diffstat (limited to 'src/southbridge/intel/i82801ex/early_smbus.c')
-rw-r--r--src/southbridge/intel/i82801ex/early_smbus.c130
1 files changed, 0 insertions, 130 deletions
diff --git a/src/southbridge/intel/i82801ex/early_smbus.c b/src/southbridge/intel/i82801ex/early_smbus.c
deleted file mode 100644
index ad543e7a94..0000000000
--- a/src/southbridge/intel/i82801ex/early_smbus.c
+++ /dev/null
@@ -1,130 +0,0 @@
-#include "smbus.h"
-
-#define SMBUS_IO_BASE 0x0f00
-
-static void enable_smbus(void)
-{
- device_t dev = PCI_DEV(0x0, 0x1f, 0x3);
-
- printk(BIOS_SPEW, "SMBus controller enabled\n");
-
- pci_write_config32(dev, 0x20, SMBUS_IO_BASE | 1);
- printk(BIOS_DEBUG, "%08x", pci_read_config32(dev, 0x20));
- /* Set smbus enable */
- pci_write_config8(dev, 0x40, 1);
- /* Set smbus iospace enable */
- pci_write_config8(dev, 0x4, 1);
- /* SMBALERT_DIS */
- pci_write_config8(dev, 0x11, 4);
-
- /* Disable interrupt generation */
- outb(0, SMBUS_IO_BASE + SMBHSTCTL);
-
- /* clear any lingering errors, so the transaction will run */
- outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
-}
-
-static int smbus_read_byte(unsigned device, unsigned address)
-{
- return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
-}
-
-#ifdef UNUSED_CODE
-static void smbus_write_byte(unsigned device, unsigned address, unsigned char val)
-{
- if (smbus_wait_until_ready(SMBUS_IO_BASE) < 0) {
- return;
- }
-
- printk(BIOS_DEBUG, "Unimplemented smbus_write_byte() called.\n");
-
-#if 0
- /* setup transaction */
- /* disable interrupts */
- outw(inw(SMBUS_IO_BASE + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)),
- SMBUS_IO_BASE + SMBGCTL);
- /* set the device I'm talking too */
- outw(((device & 0x7f) << 1) | 1, SMBUS_IO_BASE + SMBHSTADDR);
- outb(address & 0xFF, SMBUS_IO_BASE + SMBHSTCMD);
- /* set up for a byte data write */ /* FIXME */
- outw((inw(SMBUS_IO_BASE + SMBGCTL) & ~7) | (0x1), SMBUS_IO_BASE + SMBGCTL);
- /* clear any lingering errors, so the transaction will run */
- /* Do I need to write the bits to a 1 to clear an error? */
- outw(inw(SMBUS_IO_BASE + SMBGSTATUS), SMBUS_IO_BASE + SMBGSTATUS);
-
- /* clear the data word...*/
- outw(val, SMBUS_IO_BASE + SMBHSTDAT);
-
- /* start the command */
- outw((inw(SMBUS_IO_BASE + SMBGCTL) | (1 << 3)), SMBUS_IO_BASE + SMBGCTL);
-
- /* poll for transaction completion */
- smbus_wait_until_done(SMBUS_IO_BASE);
-#endif
- return;
-}
-
-static int smbus_write_block(unsigned device, unsigned length, unsigned cmd,
- unsigned data1, unsigned data2)
-{
- unsigned char byte;
- unsigned char stat;
- int i;
-
- /* chear the PM timeout flags, SECOND_TO_STS */
- outw(inw(0x0400 + 0x66), 0x0400 + 0x66);
-
- if (smbus_wait_until_ready(SMBUS_IO_BASE) < 0) {
- return -2;
- }
-
- /* setup transaction */
- /* Obtain ownership */
- outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
- for (stat=0;(stat&0x40)==0;) {
- stat = inb(SMBUS_IO_BASE + SMBHSTSTAT);
- }
- /* clear the done bit */
- outb(0x80, SMBUS_IO_BASE + SMBHSTSTAT);
- /* disable interrupts */
- outb(inb(SMBUS_IO_BASE + SMBHSTCTL) & (~1), SMBUS_IO_BASE + SMBHSTCTL);
-
- /* set the device I'm talking too */
- outb(((device & 0x7f) << 1), SMBUS_IO_BASE + SMBXMITADD);
-
- /* set the command address */
- outb(cmd & 0xFF, SMBUS_IO_BASE + SMBHSTCMD);
-
- /* set the block length */
- outb(length & 0xFF, SMBUS_IO_BASE + SMBHSTDAT0);
-
- /* try sending out the first byte of data here */
- byte=(data1>>(0))&0x0ff;
- outb(byte,SMBUS_IO_BASE + SMBBLKDAT);
- /* issue a block write command */
- outb((inb(SMBUS_IO_BASE + SMBHSTCTL) & 0xE3) | (0x5 << 2) | 0x40,
- SMBUS_IO_BASE + SMBHSTCTL);
-
- for (i=0;i<length;i++) {
-
- /* poll for transaction completion */
- if (smbus_wait_until_blk_done(SMBUS_IO_BASE) < 0) {
- return -3;
- }
-
- /* load the next byte */
- if (i>3)
- byte=(data2>>(i%4))&0x0ff;
- else
- byte=(data1>>(i))&0x0ff;
- outb(byte,SMBUS_IO_BASE + SMBBLKDAT);
-
- /* clear the done bit */
- outb(inb(SMBUS_IO_BASE + SMBHSTSTAT),
- SMBUS_IO_BASE + SMBHSTSTAT);
- }
-
- printk(BIOS_DEBUG, "SMBUS Block complete\n");
- return 0;
-}
-#endif