blob: 0c278f37f2ca9de47233d78dd97351ad34c39ced [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <device/mmio.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <soc/pci_devs.h>
#define SATA_ABAR_PORT_IMPLEMENTED 0x0c
#define SATA_PCI_CFG_PORT_CTL_STS 0x92
static void *sata_get_ahci_bar(struct device *dev)
{
uintptr_t bar;
bar = pci_read_config32(dev, PCI_BASE_ADDRESS_5);
return (void *)(bar & ~PCI_BASE_ADDRESS_MEM_ATTR_MASK);
}
/*
* SATA Port control and Status. By default, the SATA ports are set (by HW)
* to the disabled state (e.g. bits[3:0] == '0') as a result of an initial
* power on reset. When enabled by software as per SATA port mapping,
* the ports can transition between the on, partial and slumber states
* and can detect devices. When disabled, the port is in the off state and
* can't detect any devices.
*/
static void sata_final(struct device *dev)
{
void *ahcibar = sata_get_ahci_bar(dev);
u8 port_impl, temp;
/* Set Bus Master */
temp = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, temp | PCI_COMMAND_MASTER);
/* Read Ports Implemented (GHC_PI) */
port_impl = read8(ahcibar + SATA_ABAR_PORT_IMPLEMENTED);
if (CONFIG(SOC_AHCI_PORT_IMPLEMENTED_INVERT))
port_impl = ~port_impl;
port_impl &= 0x07; /* bit 0-2 */
/* Port enable */
temp = pci_read_config8(dev, SATA_PCI_CFG_PORT_CTL_STS);
temp |= port_impl;
pci_write_config8(dev, SATA_PCI_CFG_PORT_CTL_STS, temp);
}
static struct device_operations sata_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.final = sata_final,
.ops_pci = &pci_dev_ops_pci,
};
static const unsigned short pci_device_ids[] = {
PCI_DEVICE_ID_INTEL_SPT_U_SATA,
PCI_DEVICE_ID_INTEL_SPT_U_Y_PREMIUM_SATA,
PCI_DEVICE_ID_INTEL_SPT_KBL_SATA,
PCI_DEVICE_ID_INTEL_LWB_SATA_AHCI,
PCI_DEVICE_ID_INTEL_LWB_SSATA_AHCI,
PCI_DEVICE_ID_INTEL_LWB_SATA_RAID,
PCI_DEVICE_ID_INTEL_LWB_SSATA_RAID,
PCI_DEVICE_ID_INTEL_LWB_SATA_AHCI_SUPER,
PCI_DEVICE_ID_INTEL_LWB_SSATA_AHCI_SUPER,
PCI_DEVICE_ID_INTEL_LWB_SATA_RAID_SUPER,
PCI_DEVICE_ID_INTEL_LWB_SSATA_RAID_SUPER,
PCI_DEVICE_ID_INTEL_LWB_SATA_ALT,
PCI_DEVICE_ID_INTEL_LWB_SATA_ALT_RST,
PCI_DEVICE_ID_INTEL_LWB_SSATA_ALT,
PCI_DEVICE_ID_INTEL_LWB_SSATA_ALT_RST,
PCI_DEVICE_ID_INTEL_CNL_SATA,
PCI_DEVICE_ID_INTEL_CNL_PREMIUM_SATA,
PCI_DEVICE_ID_INTEL_CNP_CMP_COMPAT_SATA,
PCI_DEVICE_ID_INTEL_CNP_H_SATA,
PCI_DEVICE_ID_INTEL_CNP_LP_SATA,
PCI_DEVICE_ID_INTEL_ICP_U_SATA,
PCI_DEVICE_ID_INTEL_CMP_SATA,
PCI_DEVICE_ID_INTEL_CMP_PREMIUM_SATA,
PCI_DEVICE_ID_INTEL_CMP_LP_SATA,
0
};
static const struct pci_driver pch_sata __pci_driver = {
.ops = &sata_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};