1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015, Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
14 static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
15 struct xhci_hcor **ret_hcor)
17 struct xhci_hccr *hccr;
18 struct xhci_hcor *hcor;
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)));
26 debug("XHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
28 (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
33 /* enable busmaster */
34 dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
35 cmd |= PCI_COMMAND_MASTER;
36 dm_pci_write_config32(dev, PCI_COMMAND, cmd);
39 static int xhci_pci_probe(struct udevice *dev)
41 struct xhci_hccr *hccr;
42 struct xhci_hcor *hcor;
44 xhci_pci_init(dev, &hccr, &hcor);
46 return xhci_register(dev, hccr, hcor);
49 static const struct udevice_id xhci_pci_ids[] = {
50 { .compatible = "xhci-pci" },
54 U_BOOT_DRIVER(xhci_pci) = {
57 .probe = xhci_pci_probe,
58 .remove = xhci_deregister,
59 .of_match = xhci_pci_ids,
61 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
62 .priv_auto_alloc_size = sizeof(struct xhci_ctrl),
63 .flags = DM_FLAG_ALLOC_PRIV_DMA,
66 static struct pci_device_id xhci_pci_supported[] = {
67 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
71 U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);