6e23066d7a
Using void* for physical addresses leads to much casting and confuses developers when to convert from physical to virtual addresses or the other way around. When using plain integers for physical addresses and pointers for virtual addresses things become much cleaner and we won't ever end up dereferencing a physical address. Change-Id: I24cd53b81c7863b6d14f0cbb4ce8937728b37c1c Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/6244 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
186 lines
4.9 KiB
C
186 lines
4.9 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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//#define USB_DEBUG
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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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#ifdef CONFIG_USB_PCI
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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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static int 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 pci_device;
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u32 pciid;
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pci_device = PCI_DEV (bus, dev, func);
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class = pci_read_config32(pci_device, 8);
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pciid = pci_read_config32(pci_device, 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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if (devclass == 0xc03) {
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u32 pci_command;
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pci_command = pci_read_config32(pci_device, PCI_COMMAND);
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pci_command |= PCI_COMMAND_MASTER;
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pci_write_config32(pci_device, PCI_COMMAND, pci_command);
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usb_debug("%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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usb_debug("UHCI controller\n");
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uhci_pci_init (pci_device);
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#else
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usb_debug("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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usb_debug("OHCI controller\n");
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ohci_pci_init(pci_device);
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#else
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usb_debug("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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usb_debug("EHCI controller\n");
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ehci_pci_init(pci_device);
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#else
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usb_debug("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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usb_debug("xHCI controller\n");
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xhci_pci_init(pci_device);
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#else
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usb_debug("xHCI controller (not supported)\n");
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#endif
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break;
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default:
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usb_debug("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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static void usb_scan_pci_bus(int bus)
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{
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int dev, func;
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for (dev = 0; dev < 32; dev++) {
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u8 header_type;
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pcidev_t pci_device = PCI_DEV(bus, dev, 0);
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/* Check if there's a device here at all. */
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if (pci_read_config32(pci_device, REG_VENDOR_ID) == 0xffffffff)
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continue;
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/*
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* EHCI is defined by standards to be at a higher function
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* than the USB1 controllers. We don't want to init USB1 +
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* devices just to "steal" those for USB2, so make sure USB2
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* comes first by scanning multifunction devices from 7 to 0.
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*/
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/* Check for a multifunction device. */
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header_type = pci_read_config8(pci_device, REG_HEADER_TYPE);
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if (header_type & HEADER_TYPE_MULTIFUNCTION)
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func = 7;
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else
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func = 0;
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for (; func >= 0; func--) {
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pci_device = PCI_DEV(bus, dev, func);
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header_type = pci_read_config8(pci_device, REG_HEADER_TYPE);
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/* If this is a bridge, scan the other side. */
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if ((header_type & ~HEADER_TYPE_MULTIFUNCTION) ==
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HEADER_TYPE_BRIDGE)
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usb_scan_pci_bus(pci_read_config8(pci_device,
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REG_SECONDARY_BUS));
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else
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usb_controller_initialize(bus, dev, func);
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}
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}
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}
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#endif
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#ifdef CONFIG_USB_MEMORY
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static void usb_scan_memory(void)
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{
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#ifdef CONFIG_USB_XHCI
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xhci_init(CONFIG_USB_XHCI_BASE_ADDRESS);
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#endif
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#ifdef CONFIG_USB_EHCI
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ehci_init(CONFIG_USB_EHCI_BASE_ADDRESS);
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#endif
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#ifdef CONFIG_USB_OHCI
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ohci_init(CONFIG_USB_OHCI_BASE_ADDRESS);
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#endif
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}
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#endif
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/**
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* Initialize all USB controllers attached to PCI.
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*/
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int usb_initialize(void)
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{
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#ifdef CONFIG_USB_PCI
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usb_scan_pci_bus(0);
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#endif
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#ifdef CONFIG_USB_MEMORY
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usb_scan_memory();
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#endif
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return 0;
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}
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