| /* 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.. "); |
| pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_SERR); |
| |
| 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, |
| .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, |
| }; |