usb_ehci.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include "i82801ix.h"
#include <device/pci_ehci.h>
 
static void usb_ehci_init(struct device *dev)
{
        printk(BIOS_DEBUG, "EHCI: Setting up controller.. ");
        pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER);
 
        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 const unsigned short pci_device_ids[] = {
        PCI_DID_INTEL_82801IB_EHCI1,
        PCI_DID_INTEL_82801IB_EHCI2,
        0
};
 
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,
        .ops_pci                = &lops_pci,
};
 
static const struct pci_driver pch_usb_ehci1 __pci_driver = {
        .ops    = &usb_ehci_ops,
        .vendor = PCI_VID_INTEL,
        .devices = pci_device_ids,
};