usb_ehci.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "pch.h"
#include <device/pci_ehci.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
 
static void usb_ehci_init(struct device *dev)
{
        u32 reg32;
        struct resource *res;
        u8 access_cntl;
 
        /* Disable Wake on Disconnect in RMH */
        reg32 = RCBA32(0x35b0);
        reg32 |= 0x22;
        RCBA32(0x35b0) = reg32;
 
        printk(BIOS_DEBUG, "EHCI: Setting up controller.. ");
 
        pci_write_config32(dev, 0x84, 0x130c8911);
        pci_write_config32(dev, 0x88, 0xa0);
        pci_write_config32(dev, 0xf4, 0x80808588);
        pci_write_config32(dev, 0xf4, 0x00808588);
        pci_write_config32(dev, 0xf4, 0x00808588);
        pci_write_config32(dev, 0xfc, 0x301b1728);
 
        pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER);
 
        access_cntl = pci_read_config8(dev, 0x80);
 
        /* Enable writes to protected registers. */
        pci_write_config8(dev, 0x80, access_cntl | 1);
 
        res = probe_resource(dev, PCI_BASE_ADDRESS_0);
        if (res) {
                /* Number of ports and companion controllers.  */
                reg32 = read32((u32 *)(uintptr_t)(res->base + 4));
                write32((u32 *)(uintptr_t)(res->base + 4),
                        (reg32 & 0xfff00000) | 2);
        }
 
        /* Restore protection. */
        pci_write_config8(dev, 0x80, access_cntl);
 
        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,
        .ops_pci = &lops_pci,
};
 
static const unsigned short pci_device_ids[] = {
        PCI_DID_INTEL_IBEXPEAK_EHCI_1,
        PCI_DID_INTEL_IBEXPEAK_EHCI_2,
        0
};
 
static const struct pci_driver pch_usb_ehci __pci_driver = {
        .ops = &usb_ehci_ops,
        .vendor = PCI_VID_INTEL,
        .devices = pci_device_ids,
};