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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008-2010 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload-config.h>
#include <usb/usb.h>
#include "uhci.h"
#include "ohci.h"
#include "ehci.h"
#include "xhci.h"
#include <usb/usbdisk.h>
/**
* Initializes USB controller attached to PCI
*
* @param bus PCI bus number
* @param dev PCI device id at bus
* @param func function id of the controller
*/
int
usb_controller_initialize (int bus, int dev, int func)
{
u32 class;
u32 devclass;
u32 prog_if;
pcidev_t addr;
u32 pciid;
addr = PCI_DEV (bus, dev, func);
class = pci_read_config32 (addr, 8);
pciid = pci_read_config32 (addr, 0);
devclass = class >> 16;
prog_if = (class >> 8) & 0xff;
/* enable busmaster */
#define PCI_COMMAND 4
#define PCI_COMMAND_MASTER 4
if (devclass == 0xc03) {
u32 pci_command;
pci_command =pci_read_config32(addr, PCI_COMMAND);
pci_command |= PCI_COMMAND_MASTER;
pci_write_config32(addr, PCI_COMMAND, pci_command);
printf ("%02x:%02x.%x %04x:%04x.%d ", bus, dev, func,
pciid >> 16, pciid & 0xFFFF, func);
switch(prog_if) {
case 0x00:
printf ("UHCI controller\n");
#ifdef CONFIG_USB_UHCI
uhci_init (addr);
#else
printf ("Not supported.\n");
#endif
break;
case 0x10:
printf ("OHCI controller\n");
#ifdef CONFIG_USB_OHCI
ohci_init(addr);
#else
printf ("Not supported.\n");
#endif
break;
case 0x20:
printf ("EHCI controller\n");
#ifdef CONFIG_USB_EHCI
ehci_init(addr);
#else
printf ("Not supported.\n");
#endif
break;
case 0x30:
printf ("xHCI controller\n");
#ifdef CONFIG_USB_XHCI
xhci_init(addr);
#else
printf ("Not supported.\n");
#endif
break;
default:
printf ("unknown controller %x not supported\n",
prog_if);
break;
}
}
return 0;
}
/**
* Initialize all USB controllers attached to PCI.
*/
int
usb_initialize (void)
{
int bus, dev, func;
/* EHCI is defined by standards to be at a
* higher function than the USB1 controllers.
* We don't want to init USB1 + devices just to
* "steal" those for USB2, so make sure USB2
* comes first.
*/
for (bus = 0; bus < 256; bus++)
for (dev = 0; dev < 32; dev++)
if (pci_read_config32 (PCI_DEV(bus, dev, 0), 8) >> 16 != 0xffff)
for (func = 7; func >= 0 ; func--)
usb_controller_initialize (bus, dev, func);
usb_poll();
return 0;
}
int
usb_exit (void)
{
return 0;
}
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