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 <init.h>
11 #include <log.h>
12 #include <pci.h>
13 #include <usb.h>
14 #include <usb/xhci.h>
15
xhci_pci_init(struct udevice * dev,struct xhci_hccr ** ret_hccr,struct xhci_hcor ** ret_hcor)16 static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
17 struct xhci_hcor **ret_hcor)
18 {
19 struct xhci_hccr *hccr;
20 struct xhci_hcor *hcor;
21 u32 cmd;
22
23 hccr = (struct xhci_hccr *)dm_pci_map_bar(dev,
24 PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
25 hcor = (struct xhci_hcor *)((uintptr_t) hccr +
26 HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
27
28 debug("XHCI-PCI init hccr %p and hcor %p hc_length %d\n",
29 hccr, hcor, (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
30
31 *ret_hccr = hccr;
32 *ret_hcor = hcor;
33
34 /* enable busmaster */
35 dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
36 cmd |= PCI_COMMAND_MASTER;
37 dm_pci_write_config32(dev, PCI_COMMAND, cmd);
38 }
39
xhci_pci_probe(struct udevice * dev)40 static int xhci_pci_probe(struct udevice *dev)
41 {
42 struct xhci_hccr *hccr;
43 struct xhci_hcor *hcor;
44
45 xhci_pci_init(dev, &hccr, &hcor);
46
47 return xhci_register(dev, hccr, hcor);
48 }
49
50 static const struct udevice_id xhci_pci_ids[] = {
51 { .compatible = "xhci-pci" },
52 { }
53 };
54
55 U_BOOT_DRIVER(xhci_pci) = {
56 .name = "xhci_pci",
57 .id = UCLASS_USB,
58 .probe = xhci_pci_probe,
59 .remove = xhci_deregister,
60 .of_match = xhci_pci_ids,
61 .ops = &xhci_usb_ops,
62 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
63 .priv_auto_alloc_size = sizeof(struct xhci_ctrl),
64 .flags = DM_FLAG_ALLOC_PRIV_DMA,
65 };
66
67 static struct pci_device_id xhci_pci_supported[] = {
68 { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
69 {},
70 };
71
72 U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);
73