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 <usb/xhci.h>
13
xhci_pci_init(struct udevice * dev,struct xhci_hccr ** ret_hccr,struct xhci_hcor ** ret_hcor)14 static 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
xhci_pci_probe(struct udevice * dev)38 static 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
48 static const struct udevice_id xhci_pci_ids[] = {
49 { .compatible = "xhci-pci" },
50 { }
51 };
52
53 U_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
65 static struct pci_device_id xhci_pci_supported[] = {
66 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
67 {},
68 };
69
70 U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);
71