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