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 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 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