Mac.cc

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "Mac.h"
#include "pedigree/kernel/Log.h"
#include "pedigree/kernel/machine/Device.h"
#include "pedigree/kernel/machine/openfirmware/Device.h"
#include "pedigree/kernel/machine/openfirmware/OpenFirmware.h"
#include "pedigree/kernel/machine/ppc_common/pci.h"
#include "pedigree/kernel/processor/Processor.h"
#include <machine/ppc_common/Heathrow.h>
#include <machine/ppc_common/OpenPic.h>

extern size_t resolveInterruptNumber(Device *pDev);

Mac Mac::m_Instance;

Machine &Machine::instance()
{
    return Mac::instance();
}

void Mac::initialise()
{
    m_Vga.initialise();
    m_Keyboard.initialise();
    m_Decrementer.initialise();
    m_bInitialised = true;
}
Serial *Mac::getSerial(size_t n)
{
    return &m_Serial[n];
}
size_t Mac::getNumSerial()
{
    return 1;
}
Vga *Mac::getVga(size_t n)
{
    return &m_Vga;
}
size_t Mac::getNumVga()
{
    return 1;
}
IrqManager *Mac::getIrqManager()
{
    return m_pIrqManager;
}
SchedulerTimer *Mac::getSchedulerTimer()
{
    return &m_Decrementer;
}
Timer *Mac::getTimer()
{
    // TODO
    return 0;
}
Keyboard *Mac::getKeyboard()
{
    return &m_Keyboard;
}

Mac::Mac() : m_Decrementer(), m_Vga(), m_Keyboard(), m_pIrqManager(0)
{
}
Mac::~Mac()
{
}

// Performs a depth-first probe of the (OpenFirmware) device tree, populating
// the internal device tree.
static void probeDev(int depth, OFDevice *pOfDev, Device *pInternalDev)
{
    OFHandle hChild = OpenFirmware::instance().getFirstChild(pOfDev);
    while (hChild != 0)
    {
        // Convert the device handle into a real device object.
        OFDevice dChild(hChild);
        OFHandle hOldChild = hChild;
        // Set hChild to now be a handle for the next device to probe.
        hChild = OpenFirmware::instance().getSibling(&dChild);

        // Populate the new internal device node.
        NormalStaticString type;
        dChild.getProperty("device_type", type);

        // Prune stupid items.
        if (type.length() == 0)
            continue;

        // Create a new internal device node.
        Device *node = new Device();
        pInternalDev->addChild(node);
        node->setParent(pInternalDev);

        node->setSpecificType(String(type));
        node->setOFHandle(hOldChild);
        node->setInterruptNumber(resolveInterruptNumber(node));

        probeDev(depth + 1, &dChild, node);
    }
}

void Mac::initialiseDeviceTree()
{
    // Find the root devices.
    OFDevice ofRoot(OpenFirmware::instance().findDevice("/"));
    Device &internalRoot = Device::root();

    // Start the device probing - this is recursive and obviously starts at a
    // depth of 0.
    probeDev(0, &ofRoot, &internalRoot);

    initialisePci();
    if (!OpenPic::instance().initialise())
    {
        // OpenPic not found - try heathrow.
        if (!Heathrow::instance().initialise())
        {
            ERROR("No IRQ manager found.");
        }
        else
        {
            m_pIrqManager = &Heathrow::instance();
        }
    }
    else
    {
        m_pIrqManager = &OpenPic::instance();
    }
}