2 * This file is part of the libpayload project.
4 * Copyright (C) 2008 coresystems GmbH
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * Initializes USB controller attached to PCI
38 * @param bus PCI bus number
39 * @param dev PCI device id at bus
40 * @param func function id of the controller
43 usb_controller_initialize (int bus, int dev, int func)
51 addr = PCI_DEV (bus, dev, func);
52 class = pci_read_config32 (addr, 8);
53 pciid = pci_read_config32 (addr, 0);
55 devclass = class >> 16;
56 prog_if = (class >> 8) & 0xff;
58 /* enable busmaster */
60 #define PCI_COMMAND_MASTER 4
61 pci_write_config32 (addr, PCI_COMMAND,
62 pci_read_config32 (addr,
66 if (devclass == 0xc03) {
67 printf ("%02x:%02x.%x %04x:%04x.%d ", 0, dev, func,
68 pciid >> 16, pciid & 0xFFFF, func);
70 printf ("UHCI controller\n");
71 #ifdef CONFIG_USB_UHCI
76 printf ("Not supported.\n");
79 if (prog_if == 0x10) {
80 printf ("OHCI controller\n");
81 #ifdef CONFIG_USB_OHCI
84 printf ("Not supported.\n");
88 if (prog_if == 0x20) {
89 printf ("EHCI controller\n");
90 #ifdef CONFIG_USB_EHCI
93 printf ("Not supported.\n");
103 * Initialize all USB controllers attached to PCI.
106 usb_initialize (void)
109 for (bus = 0; bus < 256; bus++)
110 for (dev = 0; dev < 32; dev++)
111 for (func = 0; func < 8; func++)
112 usb_controller_initialize (bus, dev, func);