1 /* 2 * Copyright (c) 2015, Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * All rights reserved. 5 * 6 * SPDX-License-Identifier: GPL-2.0 7 */ 8 9 #include <common.h> 10 #include <dm.h> 11 #include <pci.h> 12 #include <usb.h> 13 #include "xhci.h" 14 15 static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, 16 struct xhci_hcor **ret_hcor) 17 { 18 struct xhci_hccr *hccr; 19 struct xhci_hcor *hcor; 20 u32 cmd; 21 22 hccr = (struct xhci_hccr *)dm_pci_map_bar(dev, 23 PCI_BASE_ADDRESS_0, PCI_REGION_MEM); 24 hcor = (struct xhci_hcor *)((uintptr_t) hccr + 25 HC_LENGTH(xhci_readl(&hccr->cr_capbase))); 26 27 debug("XHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n", 28 (u32)hccr, (u32)hcor, 29 (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 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