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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "hudson.h"
static void sata_init(struct device *dev)
{
#if CONFIG(SOUTHBRIDGE_AMD_AGESA_YANGTZE)
/**************************************
* Configure the SATA port multiplier *
**************************************/
#define BYTE_TO_DWORD_OFFSET(x) (x/4)
#define AHCI_BASE_ADDRESS_REG 0x24
#define MISC_CONTROL_REG 0x40
#define UNLOCK_BIT (1<<0)
#define SATA_CAPABILITIES_REG 0xFC
#define CFG_CAP_SPM (1<<12)
volatile u32 *ahci_ptr =
(u32*)(uintptr_t)(pci_read_config32(dev, AHCI_BASE_ADDRESS_REG) & 0xFFFFFF00);
u32 temp;
/* unlock the write-protect */
temp = pci_read_config32(dev, MISC_CONTROL_REG);
temp |= UNLOCK_BIT;
pci_write_config32(dev, MISC_CONTROL_REG, temp);
/* set the SATA AHCI mode to allow port expanders */
*(ahci_ptr + BYTE_TO_DWORD_OFFSET(SATA_CAPABILITIES_REG)) |= CFG_CAP_SPM;
/* lock the write-protect */
temp = pci_read_config32(dev, MISC_CONTROL_REG);
temp &= ~UNLOCK_BIT;
pci_write_config32(dev, MISC_CONTROL_REG, temp);
#endif
};
static struct pci_operations lops_pci = {
/* .set_subsystem = pci_dev_set_subsystem, */
};
static struct device_operations sata_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sata_init,
.scan_bus = 0,
.ops_pci = &lops_pci,
};
static const struct pci_driver sata0_driver __pci_driver = {
.ops = &sata_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_SB900_SATA,
};
static const struct pci_driver sata0_driver_ahci __pci_driver = {
.ops = &sata_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_SB900_SATA_AHCI,
};
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