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 %p and hcor %p hc_length %d\n",
27 hccr, hcor, (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
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);
38 static int xhci_pci_probe(struct udevice *dev)
40 struct xhci_hccr *hccr;
41 struct xhci_hcor *hcor;
43 xhci_pci_init(dev, &hccr, &hcor);
45 return xhci_register(dev, hccr, hcor);
48 static const struct udevice_id xhci_pci_ids[] = {
49 { .compatible = "xhci-pci" },
53 U_BOOT_DRIVER(xhci_pci) = {
56 .probe = xhci_pci_probe,
57 .remove = xhci_deregister,
58 .of_match = xhci_pci_ids,
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,
65 static struct pci_device_id xhci_pci_supported[] = {
66 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
70 U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);