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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "i82801gx.h"
#include <device/pci_ehci.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
static void usb_ehci_init(struct device *dev)
{
struct resource *res;
u8 *base;
u32 reg32;
u8 reg8;
printk(BIOS_DEBUG, "EHCI: Setting up controller.. ");
reg32 = pci_read_config32(dev, PCI_COMMAND);
reg32 |= PCI_COMMAND_MASTER;
reg32 |= PCI_COMMAND_SERR;
pci_write_config32(dev, PCI_COMMAND, reg32);
reg32 = pci_read_config32(dev, 0xdc);
reg32 |= (1 << 31) | (1 << 27);
pci_write_config32(dev, 0xdc, reg32);
reg32 = pci_read_config32(dev, 0xfc);
reg32 &= ~(3 << 2);
reg32 |= (2 << 2) | (1 << 29) | (1 << 17);
pci_write_config32(dev, 0xfc, reg32);
/* Clear any pending port changes */
res = find_resource(dev, 0x10);
base = res2mmio(res, 0, 0);
reg32 = read32(base + 0x24) | (1 << 2);
write32(base + 0x24, reg32);
/* workaround */
reg8 = pci_read_config8(dev, 0x84);
reg8 |= (1 << 4);
pci_write_config8(dev, 0x84, reg8);
printk(BIOS_DEBUG, "done.\n");
}
static void usb_ehci_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device)
{
u8 access_cntl;
access_cntl = pci_read_config8(dev, 0x80);
/* Enable writes to protected registers. */
pci_write_config8(dev, 0x80, access_cntl | 1);
pci_dev_set_subsystem(dev, vendor, device);
/* Restore protection. */
pci_write_config8(dev, 0x80, access_cntl);
}
static struct pci_operations lops_pci = {
.set_subsystem = &usb_ehci_set_subsystem,
};
static struct device_operations usb_ehci_ops = {
.read_resources = pci_ehci_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = usb_ehci_init,
.scan_bus = 0,
.enable = i82801gx_enable,
.ops_pci = &lops_pci,
};
/* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */
static const struct pci_driver i82801gx_usb_ehci __pci_driver = {
.ops = &usb_ehci_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x27cc,
};
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