LXR uboot/drivers/usb/host/xhci-pci.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2015, Google, Inc
   4 * Written by Simon Glass <sjg@chromium.org>
   5 * All rights reserved.
   6 */
   7
   8#include <common.h>
   9#include <dm.h>
  10#include <pci.h>
  11#include <usb.h>
  12#include "xhci.h"
  13
  14static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
  15                          struct xhci_hcor **ret_hcor)
  16{
  17        struct xhci_hccr *hccr;
  18        struct xhci_hcor *hcor;
  19        u32 cmd;
  20
  21        hccr = (struct xhci_hccr *)dm_pci_map_bar(dev,
  22                        PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
  23        hcor = (struct xhci_hcor *)((uintptr_t) hccr +
  24                        HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
  25
  26        debug("XHCI-PCI init hccr %p and hcor %p hc_length %d\n",
  27              hccr, hcor, (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
  28
  29        *ret_hccr = hccr;
  30        *ret_hcor = hcor;
  31
  32        /* enable busmaster */
  33        dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
  34        cmd |= PCI_COMMAND_MASTER;
  35        dm_pci_write_config32(dev, PCI_COMMAND, cmd);
  36}
  37
  38static int xhci_pci_probe(struct udevice *dev)
  39{
  40        struct xhci_hccr *hccr;
  41        struct xhci_hcor *hcor;
  42
  43        xhci_pci_init(dev, &hccr, &hcor);
  44
  45        return xhci_register(dev, hccr, hcor);
  46}
  47
  48static const struct udevice_id xhci_pci_ids[] = {
  49        { .compatible = "xhci-pci" },
  50        { }
  51};
  52
  53U_BOOT_DRIVER(xhci_pci) = {
  54        .name   = "xhci_pci",
  55        .id     = UCLASS_USB,
  56        .probe = xhci_pci_probe,
  57        .remove = xhci_deregister,
  58        .of_match = xhci_pci_ids,
  59        .ops    = &xhci_usb_ops,
  60        .platdata_auto_alloc_size = sizeof(struct usb_platdata),
  61        .priv_auto_alloc_size = sizeof(struct xhci_ctrl),
  62        .flags  = DM_FLAG_ALLOC_PRIV_DMA,
  63};
  64
  65static struct pci_device_id xhci_pci_supported[] = {
  66        { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
  67        {},
  68};
  69
  70U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);
  71