196e3d439e
Replace the use of the old device_t definition inside southbridge/intel/i82801ix. The patch has been tested both with the arch/io.h definition of device_t enabled and disabled in order to ensure compatibility while the transaction takes place. Change-Id: Ibf20e6c08994b09d2a2e68a1a1d38a7a477493aa Signed-off-by: Antonello Dettori <dev@dettori.io> Reviewed-on: https://review.coreboot.org/16403 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2008-2009 coresystems GmbH
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* 2012 secunet Security Networks AG
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/io.h>
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#include <console/console.h>
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#include <device/pci_ids.h>
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#include <device/pci_def.h>
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#include "i82801ix.h"
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#include "smbus.h"
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void enable_smbus(void)
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{
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pci_devfn_t dev;
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/* Set the SMBus device statically. */
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dev = PCI_DEV(0x0, 0x1f, 0x3);
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/* Check to make sure we've got the right device. */
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if (pci_read_config16(dev, 0x2) != 0x2930) {
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die("SMBus controller not found!");
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}
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/* Set SMBus I/O base. */
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pci_write_config32(dev, SMB_BASE,
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SMBUS_IO_BASE | PCI_BASE_ADDRESS_SPACE_IO);
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/* Set SMBus enable. */
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pci_write_config8(dev, HOSTC, HST_EN);
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/* Set SMBus I/O space enable. */
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pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO);
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/* Disable interrupt generation. */
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outb(0, SMBUS_IO_BASE + SMBHSTCTL);
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/* Clear any lingering errors, so transactions can run. */
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outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
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printk(BIOS_DEBUG, "SMBus controller enabled.\n");
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}
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int smbus_read_byte(unsigned device, unsigned address)
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{
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return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
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}
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