root/arch/powerpc/platforms/powermac/feature.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 1996-2001 Paul Mackerras (paulus@cs.anu.edu.au)
 *                          Ben. Herrenschmidt (benh@kernel.crashing.org)
 *
 *  TODO:
 *
 *   - Replace mdelay with some schedule loop if possible
 *   - Shorten some obfuscated delays on some routines (like modem
 *     power)
 *   - Refcount some clocks (see darwin)
 *   - Split split split...
 */
#include <linux/types.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/spinlock.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/ioport.h>
#include <linux/export.h>
#include <linux/pci.h>
#include <asm/sections.h>
#include <asm/errno.h>
#include <asm/ohare.h>
#include <asm/heathrow.h>
#include <asm/keylargo.h>
#include <asm/uninorth.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/dbdma.h>
#include <asm/pci-bridge.h>
#include <asm/pmac_low_i2c.h>

#include "pmac.h"

#undef DEBUG_FEATURE

#ifdef DEBUG_FEATURE
#define DBG(fmt...) printk(KERN_DEBUG fmt)
#else
#define DBG(fmt...)
#endif

#ifdef CONFIG_PPC_BOOK3S_32
extern int powersave_lowspeed;
#endif

extern int powersave_nap;
extern struct device_node *k2_skiplist[2];

/*
 * We use a single global lock to protect accesses. Each driver has
 * to take care of its own locking
 */
DEFINE_RAW_SPINLOCK(feature_lock);

#define LOCK(flags)     raw_spin_lock_irqsave(&feature_lock, flags);
#define UNLOCK(flags)   raw_spin_unlock_irqrestore(&feature_lock, flags);


/*
 * Instance of some macio stuffs
 */
struct macio_chip macio_chips[MAX_MACIO_CHIPS];

struct macio_chip *macio_find(struct device_node *child, int type)
{
        while(child) {
                int     i;

                for (i=0; i < MAX_MACIO_CHIPS && macio_chips[i].of_node; i++)
                        if (child == macio_chips[i].of_node &&
                            (!type || macio_chips[i].type == type))
                                return &macio_chips[i];
                child = child->parent;
        }
        return NULL;
}
EXPORT_SYMBOL_GPL(macio_find);

static const char *macio_names[] =
{
        "Unknown",
        "Grand Central",
        "OHare",
        "OHareII",
        "Heathrow",
        "Gatwick",
        "Paddington",
        "Keylargo",
        "Pangea",
        "Intrepid",
        "K2",
        "Shasta",
};


struct device_node *uninorth_node;
u32 __iomem *uninorth_base;

static u32 uninorth_rev;
static int uninorth_maj;
static void __iomem *u3_ht_base;

/*
 * For each motherboard family, we have a table of functions pointers
 * that handle the various features.
 */

typedef long (*feature_call)(struct device_node *node, long param, long value);

struct feature_table_entry {
        unsigned int    selector;
        feature_call    function;
};

struct pmac_mb_def
{
        const char*                     model_string;
        const char*                     model_name;
        int                             model_id;
        struct feature_table_entry*     features;
        unsigned long                   board_flags;
};
static struct pmac_mb_def pmac_mb;

/*
 * Here are the chip specific feature functions
 */

#ifndef CONFIG_PPC64

static int simple_feature_tweak(struct device_node *node, int type, int reg,
                                u32 mask, int value)
{
        struct macio_chip*      macio;
        unsigned long           flags;

        macio = macio_find(node, type);
        if (!macio)
                return -ENODEV;
        LOCK(flags);
        if (value)
                MACIO_BIS(reg, mask);
        else
                MACIO_BIC(reg, mask);
        (void)MACIO_IN32(reg);
        UNLOCK(flags);

        return 0;
}

static long ohare_htw_scc_enable(struct device_node *node, long param,
                                 long value)
{
        struct macio_chip*      macio;
        unsigned long           chan_mask;
        unsigned long           fcr;
        unsigned long           flags;
        int                     htw, trans;
        unsigned long           rmask;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        if (of_node_name_eq(node, "ch-a"))
                chan_mask = MACIO_FLAG_SCCA_ON;
        else if (of_node_name_eq(node, "ch-b"))
                chan_mask = MACIO_FLAG_SCCB_ON;
        else
                return -ENODEV;

        htw = (macio->type == macio_heathrow || macio->type == macio_paddington
                || macio->type == macio_gatwick);
        /* On these machines, the HRW_SCC_TRANS_EN_N bit mustn't be touched */
        trans = (pmac_mb.model_id != PMAC_TYPE_YOSEMITE &&
                 pmac_mb.model_id != PMAC_TYPE_YIKES);
        if (value) {
#ifdef CONFIG_ADB_PMU
                if ((param & 0xfff) == PMAC_SCC_IRDA)
                        pmu_enable_irled(1);
#endif /* CONFIG_ADB_PMU */
                LOCK(flags);
                fcr = MACIO_IN32(OHARE_FCR);
                /* Check if scc cell need enabling */
                if (!(fcr & OH_SCC_ENABLE)) {
                        fcr |= OH_SCC_ENABLE;
                        if (htw) {
                                /* Side effect: this will also power up the
                                 * modem, but it's too messy to figure out on which
                                 * ports this controls the transceiver and on which
                                 * it controls the modem
                                 */
                                if (trans)
                                        fcr &= ~HRW_SCC_TRANS_EN_N;
                                MACIO_OUT32(OHARE_FCR, fcr);
                                fcr |= (rmask = HRW_RESET_SCC);
                                MACIO_OUT32(OHARE_FCR, fcr);
                        } else {
                                fcr |= (rmask = OH_SCC_RESET);
                                MACIO_OUT32(OHARE_FCR, fcr);
                        }
                        UNLOCK(flags);
                        (void)MACIO_IN32(OHARE_FCR);
                        mdelay(15);
                        LOCK(flags);
                        fcr &= ~rmask;
                        MACIO_OUT32(OHARE_FCR, fcr);
                }
                if (chan_mask & MACIO_FLAG_SCCA_ON)
                        fcr |= OH_SCCA_IO;
                if (chan_mask & MACIO_FLAG_SCCB_ON)
                        fcr |= OH_SCCB_IO;
                MACIO_OUT32(OHARE_FCR, fcr);
                macio->flags |= chan_mask;
                UNLOCK(flags);
                if (param & PMAC_SCC_FLAG_XMON)
                        macio->flags |= MACIO_FLAG_SCC_LOCKED;
        } else {
                if (macio->flags & MACIO_FLAG_SCC_LOCKED)
                        return -EPERM;
                LOCK(flags);
                fcr = MACIO_IN32(OHARE_FCR);
                if (chan_mask & MACIO_FLAG_SCCA_ON)
                        fcr &= ~OH_SCCA_IO;
                if (chan_mask & MACIO_FLAG_SCCB_ON)
                        fcr &= ~OH_SCCB_IO;
                MACIO_OUT32(OHARE_FCR, fcr);
                if ((fcr & (OH_SCCA_IO | OH_SCCB_IO)) == 0) {
                        fcr &= ~OH_SCC_ENABLE;
                        if (htw && trans)
                                fcr |= HRW_SCC_TRANS_EN_N;
                        MACIO_OUT32(OHARE_FCR, fcr);
                }
                macio->flags &= ~(chan_mask);
                UNLOCK(flags);
                mdelay(10);
#ifdef CONFIG_ADB_PMU
                if ((param & 0xfff) == PMAC_SCC_IRDA)
                        pmu_enable_irled(0);
#endif /* CONFIG_ADB_PMU */
        }
        return 0;
}

static long ohare_floppy_enable(struct device_node *node, long param,
                                long value)
{
        return simple_feature_tweak(node, macio_ohare,
                OHARE_FCR, OH_FLOPPY_ENABLE, value);
}

static long ohare_mesh_enable(struct device_node *node, long param, long value)
{
        return simple_feature_tweak(node, macio_ohare,
                OHARE_FCR, OH_MESH_ENABLE, value);
}

static long ohare_ide_enable(struct device_node *node, long param, long value)
{
        switch(param) {
        case 0:
                /* For some reason, setting the bit in set_initial_features()
                 * doesn't stick. I'm still investigating... --BenH.
                 */
                if (value)
                        simple_feature_tweak(node, macio_ohare,
                                OHARE_FCR, OH_IOBUS_ENABLE, 1);
                return simple_feature_tweak(node, macio_ohare,
                        OHARE_FCR, OH_IDE0_ENABLE, value);
        case 1:
                return simple_feature_tweak(node, macio_ohare,
                        OHARE_FCR, OH_BAY_IDE_ENABLE, value);
        default:
                return -ENODEV;
        }
}

static long ohare_ide_reset(struct device_node *node, long param, long value)
{
        switch(param) {
        case 0:
                return simple_feature_tweak(node, macio_ohare,
                        OHARE_FCR, OH_IDE0_RESET_N, !value);
        case 1:
                return simple_feature_tweak(node, macio_ohare,
                        OHARE_FCR, OH_IDE1_RESET_N, !value);
        default:
                return -ENODEV;
        }
}

static long ohare_sleep_state(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio = &macio_chips[0];

        if ((pmac_mb.board_flags & PMAC_MB_CAN_SLEEP) == 0)
                return -EPERM;
        if (value == 1) {
                MACIO_BIC(OHARE_FCR, OH_IOBUS_ENABLE);
        } else if (value == 0) {
                MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
        }

        return 0;
}

static long heathrow_modem_enable(struct device_node *node, long param,
                                  long value)
{
        struct macio_chip*      macio;
        u8                      gpio;
        unsigned long           flags;

        macio = macio_find(node, macio_unknown);
        if (!macio)
                return -ENODEV;
        gpio = MACIO_IN8(HRW_GPIO_MODEM_RESET) & ~1;
        if (!value) {
                LOCK(flags);
                MACIO_OUT8(HRW_GPIO_MODEM_RESET, gpio);
                UNLOCK(flags);
                (void)MACIO_IN8(HRW_GPIO_MODEM_RESET);
                mdelay(250);
        }
        if (pmac_mb.model_id != PMAC_TYPE_YOSEMITE &&
            pmac_mb.model_id != PMAC_TYPE_YIKES) {
                LOCK(flags);
                if (value)
                        MACIO_BIC(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);
                else
                        MACIO_BIS(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);
                UNLOCK(flags);
                (void)MACIO_IN32(HEATHROW_FCR);
                mdelay(250);
        }
        if (value) {
                LOCK(flags);
                MACIO_OUT8(HRW_GPIO_MODEM_RESET, gpio | 1);
                (void)MACIO_IN8(HRW_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(HRW_GPIO_MODEM_RESET, gpio);
                (void)MACIO_IN8(HRW_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(HRW_GPIO_MODEM_RESET, gpio | 1);
                (void)MACIO_IN8(HRW_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250);
        }
        return 0;
}

static long heathrow_floppy_enable(struct device_node *node, long param,
                                   long value)
{
        return simple_feature_tweak(node, macio_unknown,
                HEATHROW_FCR,
                HRW_SWIM_ENABLE|HRW_BAY_FLOPPY_ENABLE,
                value);
}

static long heathrow_mesh_enable(struct device_node *node, long param,
                                 long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;

        macio = macio_find(node, macio_unknown);
        if (!macio)
                return -ENODEV;
        LOCK(flags);
        /* Set clear mesh cell enable */
        if (value)
                MACIO_BIS(HEATHROW_FCR, HRW_MESH_ENABLE);
        else
                MACIO_BIC(HEATHROW_FCR, HRW_MESH_ENABLE);
        (void)MACIO_IN32(HEATHROW_FCR);
        udelay(10);
        /* Set/Clear termination power */
        if (value)
                MACIO_BIC(HEATHROW_MBCR, 0x04000000);
        else
                MACIO_BIS(HEATHROW_MBCR, 0x04000000);
        (void)MACIO_IN32(HEATHROW_MBCR);
        udelay(10);
        UNLOCK(flags);

        return 0;
}

static long heathrow_ide_enable(struct device_node *node, long param,
                                long value)
{
        switch(param) {
        case 0:
                return simple_feature_tweak(node, macio_unknown,
                        HEATHROW_FCR, HRW_IDE0_ENABLE, value);
        case 1:
                return simple_feature_tweak(node, macio_unknown,
                        HEATHROW_FCR, HRW_BAY_IDE_ENABLE, value);
        default:
                return -ENODEV;
        }
}

static long heathrow_ide_reset(struct device_node *node, long param,
                               long value)
{
        switch(param) {
        case 0:
                return simple_feature_tweak(node, macio_unknown,
                        HEATHROW_FCR, HRW_IDE0_RESET_N, !value);
        case 1:
                return simple_feature_tweak(node, macio_unknown,
                        HEATHROW_FCR, HRW_IDE1_RESET_N, !value);
        default:
                return -ENODEV;
        }
}

static long heathrow_bmac_enable(struct device_node *node, long param,
                                 long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        if (value) {
                LOCK(flags);
                MACIO_BIS(HEATHROW_FCR, HRW_BMAC_IO_ENABLE);
                MACIO_BIS(HEATHROW_FCR, HRW_BMAC_RESET);
                UNLOCK(flags);
                (void)MACIO_IN32(HEATHROW_FCR);
                mdelay(10);
                LOCK(flags);
                MACIO_BIC(HEATHROW_FCR, HRW_BMAC_RESET);
                UNLOCK(flags);
                (void)MACIO_IN32(HEATHROW_FCR);
                mdelay(10);
        } else {
                LOCK(flags);
                MACIO_BIC(HEATHROW_FCR, HRW_BMAC_IO_ENABLE);
                UNLOCK(flags);
        }
        return 0;
}

static long heathrow_sound_enable(struct device_node *node, long param,
                                  long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;

        /* B&W G3 and Yikes don't support that properly (the
         * sound appear to never come back after being shut down).
         */
        if (pmac_mb.model_id == PMAC_TYPE_YOSEMITE ||
            pmac_mb.model_id == PMAC_TYPE_YIKES)
                return 0;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        if (value) {
                LOCK(flags);
                MACIO_BIS(HEATHROW_FCR, HRW_SOUND_CLK_ENABLE);
                MACIO_BIC(HEATHROW_FCR, HRW_SOUND_POWER_N);
                UNLOCK(flags);
                (void)MACIO_IN32(HEATHROW_FCR);
        } else {
                LOCK(flags);
                MACIO_BIS(HEATHROW_FCR, HRW_SOUND_POWER_N);
                MACIO_BIC(HEATHROW_FCR, HRW_SOUND_CLK_ENABLE);
                UNLOCK(flags);
        }
        return 0;
}

static u32 save_fcr[6];
static u32 save_mbcr;
static struct dbdma_regs save_dbdma[13];
static struct dbdma_regs save_alt_dbdma[13];

static void dbdma_save(struct macio_chip *macio, struct dbdma_regs *save)
{
        int i;

        /* Save state & config of DBDMA channels */
        for (i = 0; i < 13; i++) {
                volatile struct dbdma_regs __iomem * chan = (void __iomem *)
                        (macio->base + ((0x8000+i*0x100)>>2));
                save[i].cmdptr_hi = in_le32(&chan->cmdptr_hi);
                save[i].cmdptr = in_le32(&chan->cmdptr);
                save[i].intr_sel = in_le32(&chan->intr_sel);
                save[i].br_sel = in_le32(&chan->br_sel);
                save[i].wait_sel = in_le32(&chan->wait_sel);
        }
}

static void dbdma_restore(struct macio_chip *macio, struct dbdma_regs *save)
{
        int i;

        /* Save state & config of DBDMA channels */
        for (i = 0; i < 13; i++) {
                volatile struct dbdma_regs __iomem * chan = (void __iomem *)
                        (macio->base + ((0x8000+i*0x100)>>2));
                out_le32(&chan->control, (ACTIVE|DEAD|WAKE|FLUSH|PAUSE|RUN)<<16);
                while (in_le32(&chan->status) & ACTIVE)
                        mb();
                out_le32(&chan->cmdptr_hi, save[i].cmdptr_hi);
                out_le32(&chan->cmdptr, save[i].cmdptr);
                out_le32(&chan->intr_sel, save[i].intr_sel);
                out_le32(&chan->br_sel, save[i].br_sel);
                out_le32(&chan->wait_sel, save[i].wait_sel);
        }
}

static void heathrow_sleep(struct macio_chip *macio, int secondary)
{
        if (secondary) {
                dbdma_save(macio, save_alt_dbdma);
                save_fcr[2] = MACIO_IN32(0x38);
                save_fcr[3] = MACIO_IN32(0x3c);
        } else {
                dbdma_save(macio, save_dbdma);
                save_fcr[0] = MACIO_IN32(0x38);
                save_fcr[1] = MACIO_IN32(0x3c);
                save_mbcr = MACIO_IN32(0x34);
                /* Make sure sound is shut down */
                MACIO_BIS(HEATHROW_FCR, HRW_SOUND_POWER_N);
                MACIO_BIC(HEATHROW_FCR, HRW_SOUND_CLK_ENABLE);
                /* This seems to be necessary as well or the fan
                 * keeps coming up and battery drains fast */
                MACIO_BIC(HEATHROW_FCR, HRW_IOBUS_ENABLE);
                MACIO_BIC(HEATHROW_FCR, HRW_IDE0_RESET_N);
                /* Make sure eth is down even if module or sleep
                 * won't work properly */
                MACIO_BIC(HEATHROW_FCR, HRW_BMAC_IO_ENABLE | HRW_BMAC_RESET);
        }
        /* Make sure modem is shut down */
        MACIO_OUT8(HRW_GPIO_MODEM_RESET,
                MACIO_IN8(HRW_GPIO_MODEM_RESET) & ~1);
        MACIO_BIS(HEATHROW_FCR, HRW_SCC_TRANS_EN_N);
        MACIO_BIC(HEATHROW_FCR, OH_SCCA_IO|OH_SCCB_IO|HRW_SCC_ENABLE);

        /* Let things settle */
        (void)MACIO_IN32(HEATHROW_FCR);
}

static void heathrow_wakeup(struct macio_chip *macio, int secondary)
{
        if (secondary) {
                MACIO_OUT32(0x38, save_fcr[2]);
                (void)MACIO_IN32(0x38);
                mdelay(1);
                MACIO_OUT32(0x3c, save_fcr[3]);
                (void)MACIO_IN32(0x38);
                mdelay(10);
                dbdma_restore(macio, save_alt_dbdma);
        } else {
                MACIO_OUT32(0x38, save_fcr[0] | HRW_IOBUS_ENABLE);
                (void)MACIO_IN32(0x38);
                mdelay(1);
                MACIO_OUT32(0x3c, save_fcr[1]);
                (void)MACIO_IN32(0x38);
                mdelay(1);
                MACIO_OUT32(0x34, save_mbcr);
                (void)MACIO_IN32(0x38);
                mdelay(10);
                dbdma_restore(macio, save_dbdma);
        }
}

static long heathrow_sleep_state(struct device_node *node, long param,
                                 long value)
{
        if ((pmac_mb.board_flags & PMAC_MB_CAN_SLEEP) == 0)
                return -EPERM;
        if (value == 1) {
                if (macio_chips[1].type == macio_gatwick)
                        heathrow_sleep(&macio_chips[0], 1);
                heathrow_sleep(&macio_chips[0], 0);
        } else if (value == 0) {
                heathrow_wakeup(&macio_chips[0], 0);
                if (macio_chips[1].type == macio_gatwick)
                        heathrow_wakeup(&macio_chips[0], 1);
        }
        return 0;
}

static long core99_scc_enable(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;
        unsigned long           chan_mask;
        u32                     fcr;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        if (of_node_name_eq(node, "ch-a"))
                chan_mask = MACIO_FLAG_SCCA_ON;
        else if (of_node_name_eq(node, "ch-b"))
                chan_mask = MACIO_FLAG_SCCB_ON;
        else
                return -ENODEV;

        if (value) {
                int need_reset_scc = 0;
                int need_reset_irda = 0;

                LOCK(flags);
                fcr = MACIO_IN32(KEYLARGO_FCR0);
                /* Check if scc cell need enabling */
                if (!(fcr & KL0_SCC_CELL_ENABLE)) {
                        fcr |= KL0_SCC_CELL_ENABLE;
                        need_reset_scc = 1;
                }
                if (chan_mask & MACIO_FLAG_SCCA_ON) {
                        fcr |= KL0_SCCA_ENABLE;
                        /* Don't enable line drivers for I2S modem */
                        if ((param & 0xfff) == PMAC_SCC_I2S1)
                                fcr &= ~KL0_SCC_A_INTF_ENABLE;
                        else
                                fcr |= KL0_SCC_A_INTF_ENABLE;
                }
                if (chan_mask & MACIO_FLAG_SCCB_ON) {
                        fcr |= KL0_SCCB_ENABLE;
                        /* Perform irda specific inits */
                        if ((param & 0xfff) == PMAC_SCC_IRDA) {
                                fcr &= ~KL0_SCC_B_INTF_ENABLE;
                                fcr |= KL0_IRDA_ENABLE;
                                fcr |= KL0_IRDA_CLK32_ENABLE | KL0_IRDA_CLK19_ENABLE;
                                fcr |= KL0_IRDA_SOURCE1_SEL;
                                fcr &= ~(KL0_IRDA_FAST_CONNECT|KL0_IRDA_DEFAULT1|KL0_IRDA_DEFAULT0);
                                fcr &= ~(KL0_IRDA_SOURCE2_SEL|KL0_IRDA_HIGH_BAND);
                                need_reset_irda = 1;
                        } else
                                fcr |= KL0_SCC_B_INTF_ENABLE;
                }
                MACIO_OUT32(KEYLARGO_FCR0, fcr);
                macio->flags |= chan_mask;
                if (need_reset_scc)  {
                        MACIO_BIS(KEYLARGO_FCR0, KL0_SCC_RESET);
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        UNLOCK(flags);
                        mdelay(15);
                        LOCK(flags);
                        MACIO_BIC(KEYLARGO_FCR0, KL0_SCC_RESET);
                }
                if (need_reset_irda)  {
                        MACIO_BIS(KEYLARGO_FCR0, KL0_IRDA_RESET);
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        UNLOCK(flags);
                        mdelay(15);
                        LOCK(flags);
                        MACIO_BIC(KEYLARGO_FCR0, KL0_IRDA_RESET);
                }
                UNLOCK(flags);
                if (param & PMAC_SCC_FLAG_XMON)
                        macio->flags |= MACIO_FLAG_SCC_LOCKED;
        } else {
                if (macio->flags & MACIO_FLAG_SCC_LOCKED)
                        return -EPERM;
                LOCK(flags);
                fcr = MACIO_IN32(KEYLARGO_FCR0);
                if (chan_mask & MACIO_FLAG_SCCA_ON)
                        fcr &= ~KL0_SCCA_ENABLE;
                if (chan_mask & MACIO_FLAG_SCCB_ON) {
                        fcr &= ~KL0_SCCB_ENABLE;
                        /* Perform irda specific clears */
                        if ((param & 0xfff) == PMAC_SCC_IRDA) {
                                fcr &= ~KL0_IRDA_ENABLE;
                                fcr &= ~(KL0_IRDA_CLK32_ENABLE | KL0_IRDA_CLK19_ENABLE);
                                fcr &= ~(KL0_IRDA_FAST_CONNECT|KL0_IRDA_DEFAULT1|KL0_IRDA_DEFAULT0);
                                fcr &= ~(KL0_IRDA_SOURCE1_SEL|KL0_IRDA_SOURCE2_SEL|KL0_IRDA_HIGH_BAND);
                        }
                }
                MACIO_OUT32(KEYLARGO_FCR0, fcr);
                if ((fcr & (KL0_SCCA_ENABLE | KL0_SCCB_ENABLE)) == 0) {
                        fcr &= ~KL0_SCC_CELL_ENABLE;
                        MACIO_OUT32(KEYLARGO_FCR0, fcr);
                }
                macio->flags &= ~(chan_mask);
                UNLOCK(flags);
                mdelay(10);
        }
        return 0;
}

static long
core99_modem_enable(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio;
        u8                      gpio;
        unsigned long           flags;

        /* Hack for internal USB modem */
        if (node == NULL) {
                if (macio_chips[0].type != macio_keylargo)
                        return -ENODEV;
                node = macio_chips[0].of_node;
        }
        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        gpio = MACIO_IN8(KL_GPIO_MODEM_RESET);
        gpio |= KEYLARGO_GPIO_OUTPUT_ENABLE;
        gpio &= ~KEYLARGO_GPIO_OUTOUT_DATA;

        if (!value) {
                LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio);
                UNLOCK(flags);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                mdelay(250);
        }
        LOCK(flags);
        if (value) {
                MACIO_BIC(KEYLARGO_FCR2, KL2_ALT_DATA_OUT);
                UNLOCK(flags);
                (void)MACIO_IN32(KEYLARGO_FCR2);
                mdelay(250);
        } else {
                MACIO_BIS(KEYLARGO_FCR2, KL2_ALT_DATA_OUT);
                UNLOCK(flags);
        }
        if (value) {
                LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio | KEYLARGO_GPIO_OUTOUT_DATA);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio | KEYLARGO_GPIO_OUTOUT_DATA);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250);
        }
        return 0;
}

static long
pangea_modem_enable(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio;
        u8                      gpio;
        unsigned long           flags;

        /* Hack for internal USB modem */
        if (node == NULL) {
                if (macio_chips[0].type != macio_pangea &&
                    macio_chips[0].type != macio_intrepid)
                        return -ENODEV;
                node = macio_chips[0].of_node;
        }
        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;
        gpio = MACIO_IN8(KL_GPIO_MODEM_RESET);
        gpio |= KEYLARGO_GPIO_OUTPUT_ENABLE;
        gpio &= ~KEYLARGO_GPIO_OUTOUT_DATA;

        if (!value) {
                LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio);
                UNLOCK(flags);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                mdelay(250);
        }
        LOCK(flags);
        if (value) {
                MACIO_OUT8(KL_GPIO_MODEM_POWER,
                        KEYLARGO_GPIO_OUTPUT_ENABLE);
                UNLOCK(flags);
                (void)MACIO_IN32(KEYLARGO_FCR2);
                mdelay(250);
        } else {
                MACIO_OUT8(KL_GPIO_MODEM_POWER,
                        KEYLARGO_GPIO_OUTPUT_ENABLE | KEYLARGO_GPIO_OUTOUT_DATA);
                UNLOCK(flags);
        }
        if (value) {
                LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio | KEYLARGO_GPIO_OUTOUT_DATA);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250); LOCK(flags);
                MACIO_OUT8(KL_GPIO_MODEM_RESET, gpio | KEYLARGO_GPIO_OUTOUT_DATA);
                (void)MACIO_IN8(KL_GPIO_MODEM_RESET);
                UNLOCK(flags); mdelay(250);
        }
        return 0;
}

static long
core99_ata100_enable(struct device_node *node, long value)
{
        unsigned long flags;
        struct pci_dev *pdev = NULL;
        u8 pbus, pid;
        int rc;

        if (uninorth_rev < 0x24)
                return -ENODEV;

        LOCK(flags);
        if (value)
                UN_BIS(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_ATA100);
        else
                UN_BIC(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_ATA100);
        (void)UN_IN(UNI_N_CLOCK_CNTL);
        UNLOCK(flags);
        udelay(20);

        if (value) {
                if (pci_device_from_OF_node(node, &pbus, &pid) == 0)
                        pdev = pci_get_domain_bus_and_slot(0, pbus, pid);
                if (pdev == NULL)
                        return 0;
                rc = pci_enable_device(pdev);
                if (rc == 0)
                        pci_set_master(pdev);
                pci_dev_put(pdev);
                if (rc)
                        return rc;
        }
        return 0;
}

static long
core99_ide_enable(struct device_node *node, long param, long value)
{
        /* Bus ID 0 to 2 are KeyLargo based IDE, busID 3 is U2
         * based ata-100
         */
        switch(param) {
            case 0:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_EIDE0_ENABLE, value);
            case 1:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_EIDE1_ENABLE, value);
            case 2:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_UIDE_ENABLE, value);
            case 3:
                return core99_ata100_enable(node, value);
            default:
                return -ENODEV;
        }
}

static long
core99_ide_reset(struct device_node *node, long param, long value)
{
        switch(param) {
            case 0:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_EIDE0_RESET_N, !value);
            case 1:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_EIDE1_RESET_N, !value);
            case 2:
                return simple_feature_tweak(node, macio_unknown,
                        KEYLARGO_FCR1, KL1_UIDE_RESET_N, !value);
            default:
                return -ENODEV;
        }
}

static long
core99_gmac_enable(struct device_node *node, long param, long value)
{
        unsigned long flags;

        LOCK(flags);
        if (value)
                UN_BIS(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_GMAC);
        else
                UN_BIC(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_GMAC);
        (void)UN_IN(UNI_N_CLOCK_CNTL);
        UNLOCK(flags);
        udelay(20);

        return 0;
}

static long
core99_gmac_phy_reset(struct device_node *node, long param, long value)
{
        unsigned long flags;
        struct macio_chip *macio;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;

        LOCK(flags);
        MACIO_OUT8(KL_GPIO_ETH_PHY_RESET, KEYLARGO_GPIO_OUTPUT_ENABLE);
        (void)MACIO_IN8(KL_GPIO_ETH_PHY_RESET);
        UNLOCK(flags);
        mdelay(10);
        LOCK(flags);
        MACIO_OUT8(KL_GPIO_ETH_PHY_RESET, /*KEYLARGO_GPIO_OUTPUT_ENABLE | */
                KEYLARGO_GPIO_OUTOUT_DATA);
        UNLOCK(flags);
        mdelay(10);

        return 0;
}

static long
core99_sound_chip_enable(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;

        /* Do a better probe code, screamer G4 desktops &
         * iMacs can do that too, add a recalibrate  in
         * the driver as well
         */
        if (pmac_mb.model_id == PMAC_TYPE_PISMO ||
            pmac_mb.model_id == PMAC_TYPE_TITANIUM) {
                LOCK(flags);
                if (value)
                        MACIO_OUT8(KL_GPIO_SOUND_POWER,
                                KEYLARGO_GPIO_OUTPUT_ENABLE |
                                KEYLARGO_GPIO_OUTOUT_DATA);
                else
                        MACIO_OUT8(KL_GPIO_SOUND_POWER,
                                KEYLARGO_GPIO_OUTPUT_ENABLE);
                (void)MACIO_IN8(KL_GPIO_SOUND_POWER);
                UNLOCK(flags);
        }
        return 0;
}

static long
core99_airport_enable(struct device_node *node, long param, long value)
{
        struct macio_chip*      macio;
        unsigned long           flags;
        int                     state;

        macio = macio_find(node, 0);
        if (!macio)
                return -ENODEV;

        /* Hint: we allow passing of macio itself for the sake of the
         * sleep code
         */
        if (node != macio->of_node &&
            (!node->parent || node->parent != macio->of_node))
                return -ENODEV;
        state = (macio->flags & MACIO_FLAG_AIRPORT_ON) != 0;
        if (value == state)
                return 0;
        if (value) {
                /* This code is a reproduction of OF enable-cardslot
                 * and init-wireless methods, slightly hacked until
                 * I got it working.
                 */
                LOCK(flags);
                MACIO_OUT8(KEYLARGO_GPIO_0+0xf, 5);
                (void)MACIO_IN8(KEYLARGO_GPIO_0+0xf);
                UNLOCK(flags);
                mdelay(10);
                LOCK(flags);
                MACIO_OUT8(KEYLARGO_GPIO_0+0xf, 4);
                (void)MACIO_IN8(KEYLARGO_GPIO_0+0xf);
                UNLOCK(flags);

                mdelay(10);

                LOCK(flags);
                MACIO_BIC(KEYLARGO_FCR2, KL2_CARDSEL_16);
                (void)MACIO_IN32(KEYLARGO_FCR2);
                udelay(10);
                MACIO_OUT8(KEYLARGO_GPIO_EXTINT_0+0xb, 0);
                (void)MACIO_IN8(KEYLARGO_GPIO_EXTINT_0+0xb);
                udelay(10);
                MACIO_OUT8(KEYLARGO_GPIO_EXTINT_0+0xa, 0x28);
                (void)MACIO_IN8(KEYLARGO_GPIO_EXTINT_0+0xa);
                udelay(10);
                MACIO_OUT8(KEYLARGO_GPIO_EXTINT_0+0xd, 0x28);
                (void)MACIO_IN8(KEYLARGO_GPIO_EXTINT_0+0xd);
                udelay(10);
                MACIO_OUT8(KEYLARGO_GPIO_0+0xd, 0x28);
                (void)MACIO_IN8(KEYLARGO_GPIO_0+0xd);
                udelay(10);
                MACIO_OUT8(KEYLARGO_GPIO_0+0xe, 0x28);
                (void)MACIO_IN8(KEYLARGO_GPIO_0+0xe);
                UNLOCK(flags);
                udelay(10);
                MACIO_OUT32(0x1c000, 0);
                mdelay(1);
                MACIO_OUT8(0x1a3e0, 0x41);
                (void)MACIO_IN8(0x1a3e0);
                udelay(10);
                LOCK(flags);
                MACIO_BIS(KEYLARGO_FCR2, KL2_CARDSEL_16);
                (void)MACIO_IN32(KEYLARGO_FCR2);
                UNLOCK(flags);
                mdelay(100);

                macio->flags |= MACIO_FLAG_AIRPORT_ON;
        } else {
                LOCK(flags);
                MACIO_BIC(KEYLARGO_FCR2, KL2_CARDSEL_16);
                (void)MACIO_IN32(KEYLARGO_FCR2);
                MACIO_OUT8(KL_GPIO_AIRPORT_0, 0);
                MACIO_OUT8(KL_GPIO_AIRPORT_1, 0);
                MACIO_OUT8(KL_GPIO_AIRPORT_2, 0);
                MACIO_OUT8(KL_GPIO_AIRPORT_3, 0);
                MACIO_OUT8(KL_GPIO_AIRPORT_4, 0);
                (void)MACIO_IN8(KL_GPIO_AIRPORT_4);
                UNLOCK(flags);

                macio->flags &= ~MACIO_FLAG_AIRPORT_ON;
        }
        return 0;
}

#ifdef CONFIG_SMP
static long
core99_reset_cpu(struct device_node *node, long param, long value)
{
        unsigned int reset_io = 0;
        unsigned long flags;
        struct macio_chip *macio;
        struct device_node *np;
        const int dflt_reset_lines[] = {        KL_GPIO_RESET_CPU0,
                                                KL_GPIO_RESET_CPU1,
                                                KL_GPIO_RESET_CPU2,
                                                KL_GPIO_RESET_CPU3 };

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo)
                return -ENODEV;

        for_each_of_cpu_node(np) {
                const u32 *rst = of_get_property(np, "soft-reset", NULL);
                if (!rst)
                        continue;
                if (param == of_get_cpu_hwid(np, 0)) {
                        of_node_put(np);
                        reset_io = *rst;
                        break;
                }
        }
        if (np == NULL || reset_io == 0)
                reset_io = dflt_reset_lines[param];

        LOCK(flags);
        MACIO_OUT8(reset_io, KEYLARGO_GPIO_OUTPUT_ENABLE);
        (void)MACIO_IN8(reset_io);
        udelay(1);
        MACIO_OUT8(reset_io, 0);
        (void)MACIO_IN8(reset_io);
        UNLOCK(flags);

        return 0;
}
#endif /* CONFIG_SMP */

static long
core99_usb_enable(struct device_node *node, long param, long value)
{
        struct macio_chip *macio;
        unsigned long flags;
        const char *prop;
        int number;
        u32 reg;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;

        prop = of_get_property(node, "AAPL,clock-id", NULL);
        if (!prop)
                return -ENODEV;
        if (strncmp(prop, "usb0u048", 8) == 0)
                number = 0;
        else if (strncmp(prop, "usb1u148", 8) == 0)
                number = 2;
        else if (strncmp(prop, "usb2u248", 8) == 0)
                number = 4;
        else
                return -ENODEV;

        /* Sorry for the brute-force locking, but this is only used during
         * sleep and the timing seem to be critical
         */
        LOCK(flags);
        if (value) {
                /* Turn ON */
                if (number == 0) {
                        MACIO_BIC(KEYLARGO_FCR0, (KL0_USB0_PAD_SUSPEND0 | KL0_USB0_PAD_SUSPEND1));
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        UNLOCK(flags);
                        mdelay(1);
                        LOCK(flags);
                        MACIO_BIS(KEYLARGO_FCR0, KL0_USB0_CELL_ENABLE);
                } else if (number == 2) {
                        MACIO_BIC(KEYLARGO_FCR0, (KL0_USB1_PAD_SUSPEND0 | KL0_USB1_PAD_SUSPEND1));
                        UNLOCK(flags);
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        mdelay(1);
                        LOCK(flags);
                        MACIO_BIS(KEYLARGO_FCR0, KL0_USB1_CELL_ENABLE);
                } else if (number == 4) {
                        MACIO_BIC(KEYLARGO_FCR1, (KL1_USB2_PAD_SUSPEND0 | KL1_USB2_PAD_SUSPEND1));
                        UNLOCK(flags);
                        (void)MACIO_IN32(KEYLARGO_FCR1);
                        mdelay(1);
                        LOCK(flags);
                        MACIO_BIS(KEYLARGO_FCR1, KL1_USB2_CELL_ENABLE);
                }
                if (number < 4) {
                        reg = MACIO_IN32(KEYLARGO_FCR4);
                        reg &=  ~(KL4_PORT_WAKEUP_ENABLE(number) | KL4_PORT_RESUME_WAKE_EN(number) |
                                KL4_PORT_CONNECT_WAKE_EN(number) | KL4_PORT_DISCONNECT_WAKE_EN(number));
                        reg &=  ~(KL4_PORT_WAKEUP_ENABLE(number+1) | KL4_PORT_RESUME_WAKE_EN(number+1) |
                                KL4_PORT_CONNECT_WAKE_EN(number+1) | KL4_PORT_DISCONNECT_WAKE_EN(number+1));
                        MACIO_OUT32(KEYLARGO_FCR4, reg);
                        (void)MACIO_IN32(KEYLARGO_FCR4);
                        udelay(10);
                } else {
                        reg = MACIO_IN32(KEYLARGO_FCR3);
                        reg &=  ~(KL3_IT_PORT_WAKEUP_ENABLE(0) | KL3_IT_PORT_RESUME_WAKE_EN(0) |
                                KL3_IT_PORT_CONNECT_WAKE_EN(0) | KL3_IT_PORT_DISCONNECT_WAKE_EN(0));
                        reg &=  ~(KL3_IT_PORT_WAKEUP_ENABLE(1) | KL3_IT_PORT_RESUME_WAKE_EN(1) |
                                KL3_IT_PORT_CONNECT_WAKE_EN(1) | KL3_IT_PORT_DISCONNECT_WAKE_EN(1));
                        MACIO_OUT32(KEYLARGO_FCR3, reg);
                        (void)MACIO_IN32(KEYLARGO_FCR3);
                        udelay(10);
                }
                if (macio->type == macio_intrepid) {
                        /* wait for clock stopped bits to clear */
                        u32 test0 = 0, test1 = 0;
                        u32 status0, status1;
                        int timeout = 1000;

                        UNLOCK(flags);
                        switch (number) {
                        case 0:
                                test0 = UNI_N_CLOCK_STOPPED_USB0;
                                test1 = UNI_N_CLOCK_STOPPED_USB0PCI;
                                break;
                        case 2:
                                test0 = UNI_N_CLOCK_STOPPED_USB1;
                                test1 = UNI_N_CLOCK_STOPPED_USB1PCI;
                                break;
                        case 4:
                                test0 = UNI_N_CLOCK_STOPPED_USB2;
                                test1 = UNI_N_CLOCK_STOPPED_USB2PCI;
                                break;
                        }
                        do {
                                if (--timeout <= 0) {
                                        printk(KERN_ERR "core99_usb_enable: "
                                               "Timeout waiting for clocks\n");
                                        break;
                                }
                                mdelay(1);
                                status0 = UN_IN(UNI_N_CLOCK_STOP_STATUS0);
                                status1 = UN_IN(UNI_N_CLOCK_STOP_STATUS1);
                        } while ((status0 & test0) | (status1 & test1));
                        LOCK(flags);
                }
        } else {
                /* Turn OFF */
                if (number < 4) {
                        reg = MACIO_IN32(KEYLARGO_FCR4);
                        reg |=  KL4_PORT_WAKEUP_ENABLE(number) | KL4_PORT_RESUME_WAKE_EN(number) |
                                KL4_PORT_CONNECT_WAKE_EN(number) | KL4_PORT_DISCONNECT_WAKE_EN(number);
                        reg |=  KL4_PORT_WAKEUP_ENABLE(number+1) | KL4_PORT_RESUME_WAKE_EN(number+1) |
                                KL4_PORT_CONNECT_WAKE_EN(number+1) | KL4_PORT_DISCONNECT_WAKE_EN(number+1);
                        MACIO_OUT32(KEYLARGO_FCR4, reg);
                        (void)MACIO_IN32(KEYLARGO_FCR4);
                        udelay(1);
                } else {
                        reg = MACIO_IN32(KEYLARGO_FCR3);
                        reg |=  KL3_IT_PORT_WAKEUP_ENABLE(0) | KL3_IT_PORT_RESUME_WAKE_EN(0) |
                                KL3_IT_PORT_CONNECT_WAKE_EN(0) | KL3_IT_PORT_DISCONNECT_WAKE_EN(0);
                        reg |=  KL3_IT_PORT_WAKEUP_ENABLE(1) | KL3_IT_PORT_RESUME_WAKE_EN(1) |
                                KL3_IT_PORT_CONNECT_WAKE_EN(1) | KL3_IT_PORT_DISCONNECT_WAKE_EN(1);
                        MACIO_OUT32(KEYLARGO_FCR3, reg);
                        (void)MACIO_IN32(KEYLARGO_FCR3);
                        udelay(1);
                }
                if (number == 0) {
                        if (macio->type != macio_intrepid)
                                MACIO_BIC(KEYLARGO_FCR0, KL0_USB0_CELL_ENABLE);
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        udelay(1);
                        MACIO_BIS(KEYLARGO_FCR0, (KL0_USB0_PAD_SUSPEND0 | KL0_USB0_PAD_SUSPEND1));
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                } else if (number == 2) {
                        if (macio->type != macio_intrepid)
                                MACIO_BIC(KEYLARGO_FCR0, KL0_USB1_CELL_ENABLE);
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                        udelay(1);
                        MACIO_BIS(KEYLARGO_FCR0, (KL0_USB1_PAD_SUSPEND0 | KL0_USB1_PAD_SUSPEND1));
                        (void)MACIO_IN32(KEYLARGO_FCR0);
                } else if (number == 4) {
                        udelay(1);
                        MACIO_BIS(KEYLARGO_FCR1, (KL1_USB2_PAD_SUSPEND0 | KL1_USB2_PAD_SUSPEND1));
                        (void)MACIO_IN32(KEYLARGO_FCR1);
                }
                udelay(1);
        }
        UNLOCK(flags);

        return 0;
}

static long
core99_firewire_enable(struct device_node *node, long param, long value)
{
        unsigned long flags;
        struct macio_chip *macio;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;
        if (!(macio->flags & MACIO_FLAG_FW_SUPPORTED))
                return -ENODEV;

        LOCK(flags);
        if (value) {
                UN_BIS(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_FW);
                (void)UN_IN(UNI_N_CLOCK_CNTL);
        } else {
                UN_BIC(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_FW);
                (void)UN_IN(UNI_N_CLOCK_CNTL);
        }
        UNLOCK(flags);
        mdelay(1);

        return 0;
}

static long
core99_firewire_cable_power(struct device_node *node, long param, long value)
{
        unsigned long flags;
        struct macio_chip *macio;

        /* Trick: we allow NULL node */
        if ((pmac_mb.board_flags & PMAC_MB_HAS_FW_POWER) == 0)
                return -ENODEV;
        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;
        if (!(macio->flags & MACIO_FLAG_FW_SUPPORTED))
                return -ENODEV;

        LOCK(flags);
        if (value) {
                MACIO_OUT8(KL_GPIO_FW_CABLE_POWER , 0);
                MACIO_IN8(KL_GPIO_FW_CABLE_POWER);
                udelay(10);
        } else {
                MACIO_OUT8(KL_GPIO_FW_CABLE_POWER , 4);
                MACIO_IN8(KL_GPIO_FW_CABLE_POWER); udelay(10);
        }
        UNLOCK(flags);
        mdelay(1);

        return 0;
}

static long
intrepid_aack_delay_enable(struct device_node *node, long param, long value)
{
        unsigned long flags;

        if (uninorth_rev < 0xd2)
                return -ENODEV;

        LOCK(flags);
        if (param)
                UN_BIS(UNI_N_AACK_DELAY, UNI_N_AACK_DELAY_ENABLE);
        else
                UN_BIC(UNI_N_AACK_DELAY, UNI_N_AACK_DELAY_ENABLE);
        UNLOCK(flags);

        return 0;
}


#endif /* CONFIG_PPC64 */

static long
core99_read_gpio(struct device_node *node, long param, long value)
{
        struct macio_chip *macio = &macio_chips[0];

        return MACIO_IN8(param);
}


static long
core99_write_gpio(struct device_node *node, long param, long value)
{
        struct macio_chip *macio = &macio_chips[0];

        MACIO_OUT8(param, (u8)(value & 0xff));
        return 0;
}

#ifdef CONFIG_PPC64
static long g5_gmac_enable(struct device_node *node, long param, long value)
{
        struct macio_chip *macio = &macio_chips[0];
        unsigned long flags;

        if (node == NULL)
                return -ENODEV;

        LOCK(flags);
        if (value) {
                MACIO_BIS(KEYLARGO_FCR1, K2_FCR1_GMAC_CLK_ENABLE);
                mb();
                k2_skiplist[0] = NULL;
        } else {
                k2_skiplist[0] = node;
                mb();
                MACIO_BIC(KEYLARGO_FCR1, K2_FCR1_GMAC_CLK_ENABLE);
        }
        
        UNLOCK(flags);
        mdelay(1);

        return 0;
}

static long g5_fw_enable(struct device_node *node, long param, long value)
{
        struct macio_chip *macio = &macio_chips[0];
        unsigned long flags;

        if (node == NULL)
                return -ENODEV;

        LOCK(flags);
        if (value) {
                MACIO_BIS(KEYLARGO_FCR1, K2_FCR1_FW_CLK_ENABLE);
                mb();
                k2_skiplist[1] = NULL;
        } else {
                k2_skiplist[1] = node;
                mb();
                MACIO_BIC(KEYLARGO_FCR1, K2_FCR1_FW_CLK_ENABLE);
        }
        
        UNLOCK(flags);
        mdelay(1);

        return 0;
}

static long g5_mpic_enable(struct device_node *node, long param, long value)
{
        unsigned long flags;
        struct device_node *parent = of_get_parent(node);
        int is_u3;

        if (parent == NULL)
                return 0;
        is_u3 = of_node_name_eq(parent, "u3") || of_node_name_eq(parent, "u4");
        of_node_put(parent);
        if (!is_u3)
                return 0;

        LOCK(flags);
        UN_BIS(U3_TOGGLE_REG, U3_MPIC_RESET | U3_MPIC_OUTPUT_ENABLE);
        UNLOCK(flags);

        return 0;
}

static long g5_eth_phy_reset(struct device_node *node, long param, long value)
{
        struct macio_chip *macio = &macio_chips[0];
        struct device_node *phy;
        int need_reset;

        /*
         * We must not reset the combo PHYs, only the BCM5221 found in
         * the iMac G5.
         */
        phy = of_get_next_child(node, NULL);
        if (!phy)
                return -ENODEV;
        need_reset = of_device_is_compatible(phy, "B5221");
        of_node_put(phy);
        if (!need_reset)
                return 0;

        /* PHY reset is GPIO 29, not in device-tree unfortunately */
        MACIO_OUT8(K2_GPIO_EXTINT_0 + 29,
                   KEYLARGO_GPIO_OUTPUT_ENABLE | KEYLARGO_GPIO_OUTOUT_DATA);
        /* Thankfully, this is now always called at a time when we can
         * schedule by sungem.
         */
        msleep(10);
        MACIO_OUT8(K2_GPIO_EXTINT_0 + 29, 0);

        return 0;
}

static long g5_i2s_enable(struct device_node *node, long param, long value)
{
        /* Very crude implementation for now */
        struct macio_chip *macio = &macio_chips[0];
        unsigned long flags;
        int cell;
        u32 fcrs[3][3] = {
                { 0,
                  K2_FCR1_I2S0_CELL_ENABLE |
                  K2_FCR1_I2S0_CLK_ENABLE_BIT | K2_FCR1_I2S0_ENABLE,
                  KL3_I2S0_CLK18_ENABLE
                },
                { KL0_SCC_A_INTF_ENABLE,
                  K2_FCR1_I2S1_CELL_ENABLE |
                  K2_FCR1_I2S1_CLK_ENABLE_BIT | K2_FCR1_I2S1_ENABLE,
                  KL3_I2S1_CLK18_ENABLE
                },
                { KL0_SCC_B_INTF_ENABLE,
                  SH_FCR1_I2S2_CELL_ENABLE |
                  SH_FCR1_I2S2_CLK_ENABLE_BIT | SH_FCR1_I2S2_ENABLE,
                  SH_FCR3_I2S2_CLK18_ENABLE
                },
        };

        if (macio->type != macio_keylargo2 && macio->type != macio_shasta)
                return -ENODEV;
        if (strncmp(node->name, "i2s-", 4))
                return -ENODEV;
        cell = node->name[4] - 'a';
        switch(cell) {
        case 0:
        case 1:
                break;
        case 2:
                if (macio->type == macio_shasta)
                        break;
                fallthrough;
        default:
                return -ENODEV;
        }

        LOCK(flags);
        if (value) {
                MACIO_BIC(KEYLARGO_FCR0, fcrs[cell][0]);
                MACIO_BIS(KEYLARGO_FCR1, fcrs[cell][1]);
                MACIO_BIS(KEYLARGO_FCR3, fcrs[cell][2]);
        } else {
                MACIO_BIC(KEYLARGO_FCR3, fcrs[cell][2]);
                MACIO_BIC(KEYLARGO_FCR1, fcrs[cell][1]);
                MACIO_BIS(KEYLARGO_FCR0, fcrs[cell][0]);
        }
        udelay(10);
        UNLOCK(flags);

        return 0;
}


#ifdef CONFIG_SMP
static long g5_reset_cpu(struct device_node *node, long param, long value)
{
        unsigned int reset_io = 0;
        unsigned long flags;
        struct macio_chip *macio;
        struct device_node *np;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo2 && macio->type != macio_shasta)
                return -ENODEV;

        for_each_of_cpu_node(np) {
                const u32 *rst = of_get_property(np, "soft-reset", NULL);
                if (!rst)
                        continue;
                if (param == of_get_cpu_hwid(np, 0)) {
                        of_node_put(np);
                        reset_io = *rst;
                        break;
                }
        }
        if (np == NULL || reset_io == 0)
                return -ENODEV;

        LOCK(flags);
        MACIO_OUT8(reset_io, KEYLARGO_GPIO_OUTPUT_ENABLE);
        (void)MACIO_IN8(reset_io);
        udelay(1);
        MACIO_OUT8(reset_io, 0);
        (void)MACIO_IN8(reset_io);
        UNLOCK(flags);

        return 0;
}
#endif /* CONFIG_SMP */

/*
 * This can be called from pmac_smp so isn't static
 *
 * This takes the second CPU off the bus on dual CPU machines
 * running UP
 */
void __init g5_phy_disable_cpu1(void)
{
        if (uninorth_maj == 3)
                UN_OUT(U3_API_PHY_CONFIG_1, 0);
}
#endif /* CONFIG_PPC64 */

#ifndef CONFIG_PPC64


#ifdef CONFIG_PM
static u32 save_gpio_levels[2];
static u8 save_gpio_extint[KEYLARGO_GPIO_EXTINT_CNT];
static u8 save_gpio_normal[KEYLARGO_GPIO_CNT];
static u32 save_unin_clock_ctl;

static void keylargo_shutdown(struct macio_chip *macio, int sleep_mode)
{
        u32 temp;

        if (sleep_mode) {
                mdelay(1);
                MACIO_BIS(KEYLARGO_FCR0, KL0_USB_REF_SUSPEND);
                (void)MACIO_IN32(KEYLARGO_FCR0);
                mdelay(1);
        }

        MACIO_BIC(KEYLARGO_FCR0,KL0_SCCA_ENABLE | KL0_SCCB_ENABLE |
                                KL0_SCC_CELL_ENABLE |
                                KL0_IRDA_ENABLE | KL0_IRDA_CLK32_ENABLE |
                                KL0_IRDA_CLK19_ENABLE);

        MACIO_BIC(KEYLARGO_MBCR, KL_MBCR_MB0_DEV_MASK);
        MACIO_BIS(KEYLARGO_MBCR, KL_MBCR_MB0_IDE_ENABLE);

        MACIO_BIC(KEYLARGO_FCR1,
                KL1_AUDIO_SEL_22MCLK | KL1_AUDIO_CLK_ENABLE_BIT |
                KL1_AUDIO_CLK_OUT_ENABLE | KL1_AUDIO_CELL_ENABLE |
                KL1_I2S0_CELL_ENABLE | KL1_I2S0_CLK_ENABLE_BIT |
                KL1_I2S0_ENABLE | KL1_I2S1_CELL_ENABLE |
                KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE |
                KL1_EIDE0_ENABLE | KL1_EIDE0_RESET_N |
                KL1_EIDE1_ENABLE | KL1_EIDE1_RESET_N |
                KL1_UIDE_ENABLE);

        MACIO_BIS(KEYLARGO_FCR2, KL2_ALT_DATA_OUT);
        MACIO_BIC(KEYLARGO_FCR2, KL2_IOBUS_ENABLE);

        temp = MACIO_IN32(KEYLARGO_FCR3);
        if (macio->rev >= 2) {
                temp |= KL3_SHUTDOWN_PLL2X;
                if (sleep_mode)
                        temp |= KL3_SHUTDOWN_PLL_TOTAL;
        }

        temp |= KL3_SHUTDOWN_PLLKW6 | KL3_SHUTDOWN_PLLKW4 |
                KL3_SHUTDOWN_PLLKW35;
        if (sleep_mode)
                temp |= KL3_SHUTDOWN_PLLKW12;
        temp &= ~(KL3_CLK66_ENABLE | KL3_CLK49_ENABLE | KL3_CLK45_ENABLE
                | KL3_CLK31_ENABLE | KL3_I2S1_CLK18_ENABLE | KL3_I2S0_CLK18_ENABLE);
        if (sleep_mode)
                temp &= ~(KL3_TIMER_CLK18_ENABLE | KL3_VIA_CLK16_ENABLE);
        MACIO_OUT32(KEYLARGO_FCR3, temp);

        /* Flush posted writes & wait a bit */
        (void)MACIO_IN32(KEYLARGO_FCR0); mdelay(1);
}

static void pangea_shutdown(struct macio_chip *macio, int sleep_mode)
{
        u32 temp;

        MACIO_BIC(KEYLARGO_FCR0,KL0_SCCA_ENABLE | KL0_SCCB_ENABLE |
                                KL0_SCC_CELL_ENABLE |
                                KL0_USB0_CELL_ENABLE | KL0_USB1_CELL_ENABLE);

        MACIO_BIC(KEYLARGO_FCR1,
                KL1_AUDIO_SEL_22MCLK | KL1_AUDIO_CLK_ENABLE_BIT |
                KL1_AUDIO_CLK_OUT_ENABLE | KL1_AUDIO_CELL_ENABLE |
                KL1_I2S0_CELL_ENABLE | KL1_I2S0_CLK_ENABLE_BIT |
                KL1_I2S0_ENABLE | KL1_I2S1_CELL_ENABLE |
                KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE |
                KL1_UIDE_ENABLE);
        if (pmac_mb.board_flags & PMAC_MB_MOBILE)
                MACIO_BIC(KEYLARGO_FCR1, KL1_UIDE_RESET_N);

        MACIO_BIS(KEYLARGO_FCR2, KL2_ALT_DATA_OUT);

        temp = MACIO_IN32(KEYLARGO_FCR3);
        temp |= KL3_SHUTDOWN_PLLKW6 | KL3_SHUTDOWN_PLLKW4 |
                KL3_SHUTDOWN_PLLKW35;
        temp &= ~(KL3_CLK49_ENABLE | KL3_CLK45_ENABLE | KL3_CLK31_ENABLE
                | KL3_I2S0_CLK18_ENABLE | KL3_I2S1_CLK18_ENABLE);
        if (sleep_mode)
                temp &= ~(KL3_VIA_CLK16_ENABLE | KL3_TIMER_CLK18_ENABLE);
        MACIO_OUT32(KEYLARGO_FCR3, temp);

        /* Flush posted writes & wait a bit */
        (void)MACIO_IN32(KEYLARGO_FCR0); mdelay(1);
}

static void intrepid_shutdown(struct macio_chip *macio, int sleep_mode)
{
        u32 temp;

        MACIO_BIC(KEYLARGO_FCR0,KL0_SCCA_ENABLE | KL0_SCCB_ENABLE |
                  KL0_SCC_CELL_ENABLE);

        MACIO_BIC(KEYLARGO_FCR1,
                KL1_I2S0_CELL_ENABLE | KL1_I2S0_CLK_ENABLE_BIT |
                KL1_I2S0_ENABLE | KL1_I2S1_CELL_ENABLE |
                KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE |
                KL1_EIDE0_ENABLE);
        if (pmac_mb.board_flags & PMAC_MB_MOBILE)
                MACIO_BIC(KEYLARGO_FCR1, KL1_UIDE_RESET_N);

        temp = MACIO_IN32(KEYLARGO_FCR3);
        temp &= ~(KL3_CLK49_ENABLE | KL3_CLK45_ENABLE |
                  KL3_I2S1_CLK18_ENABLE | KL3_I2S0_CLK18_ENABLE);
        if (sleep_mode)
                temp &= ~(KL3_TIMER_CLK18_ENABLE | KL3_IT_VIA_CLK32_ENABLE);
        MACIO_OUT32(KEYLARGO_FCR3, temp);

        /* Flush posted writes & wait a bit */
        (void)MACIO_IN32(KEYLARGO_FCR0);
        mdelay(10);
}


static int
core99_sleep(void)
{
        struct macio_chip *macio;
        int i;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;

        /* We power off the wireless slot in case it was not done
         * by the driver. We don't power it on automatically however
         */
        if (macio->flags & MACIO_FLAG_AIRPORT_ON)
                core99_airport_enable(macio->of_node, 0, 0);

        /* We power off the FW cable. Should be done by the driver... */
        if (macio->flags & MACIO_FLAG_FW_SUPPORTED) {
                core99_firewire_enable(NULL, 0, 0);
                core99_firewire_cable_power(NULL, 0, 0);
        }

        /* We make sure int. modem is off (in case driver lost it) */
        if (macio->type == macio_keylargo)
                core99_modem_enable(macio->of_node, 0, 0);
        else
                pangea_modem_enable(macio->of_node, 0, 0);

        /* We make sure the sound is off as well */
        core99_sound_chip_enable(macio->of_node, 0, 0);

        /*
         * Save various bits of KeyLargo
         */

        /* Save the state of the various GPIOs */
        save_gpio_levels[0] = MACIO_IN32(KEYLARGO_GPIO_LEVELS0);
        save_gpio_levels[1] = MACIO_IN32(KEYLARGO_GPIO_LEVELS1);
        for (i=0; i<KEYLARGO_GPIO_EXTINT_CNT; i++)
                save_gpio_extint[i] = MACIO_IN8(KEYLARGO_GPIO_EXTINT_0+i);
        for (i=0; i<KEYLARGO_GPIO_CNT; i++)
                save_gpio_normal[i] = MACIO_IN8(KEYLARGO_GPIO_0+i);

        /* Save the FCRs */
        if (macio->type == macio_keylargo)
                save_mbcr = MACIO_IN32(KEYLARGO_MBCR);
        save_fcr[0] = MACIO_IN32(KEYLARGO_FCR0);
        save_fcr[1] = MACIO_IN32(KEYLARGO_FCR1);
        save_fcr[2] = MACIO_IN32(KEYLARGO_FCR2);
        save_fcr[3] = MACIO_IN32(KEYLARGO_FCR3);
        save_fcr[4] = MACIO_IN32(KEYLARGO_FCR4);
        if (macio->type == macio_pangea || macio->type == macio_intrepid)
                save_fcr[5] = MACIO_IN32(KEYLARGO_FCR5);

        /* Save state & config of DBDMA channels */
        dbdma_save(macio, save_dbdma);

        /*
         * Turn off as much as we can
         */
        if (macio->type == macio_pangea)
                pangea_shutdown(macio, 1);
        else if (macio->type == macio_intrepid)
                intrepid_shutdown(macio, 1);
        else if (macio->type == macio_keylargo)
                keylargo_shutdown(macio, 1);

        /*
         * Put the host bridge to sleep
         */

        save_unin_clock_ctl = UN_IN(UNI_N_CLOCK_CNTL);
        /* Note: do not switch GMAC off, driver does it when necessary, WOL must keep it
         * enabled !
         */
        UN_OUT(UNI_N_CLOCK_CNTL, save_unin_clock_ctl &
               ~(/*UNI_N_CLOCK_CNTL_GMAC|*/UNI_N_CLOCK_CNTL_FW/*|UNI_N_CLOCK_CNTL_PCI*/));
        udelay(100);
        UN_OUT(UNI_N_HWINIT_STATE, UNI_N_HWINIT_STATE_SLEEPING);
        UN_OUT(UNI_N_POWER_MGT, UNI_N_POWER_MGT_SLEEP);
        mdelay(10);

        /*
         * FIXME: A bit of black magic with OpenPIC (don't ask me why)
         */
        if (pmac_mb.model_id == PMAC_TYPE_SAWTOOTH) {
                MACIO_BIS(0x506e0, 0x00400000);
                MACIO_BIS(0x506e0, 0x80000000);
        }
        return 0;
}

static int
core99_wake_up(void)
{
        struct macio_chip *macio;
        int i;

        macio = &macio_chips[0];
        if (macio->type != macio_keylargo && macio->type != macio_pangea &&
            macio->type != macio_intrepid)
                return -ENODEV;

        /*
         * Wakeup the host bridge
         */
        UN_OUT(UNI_N_POWER_MGT, UNI_N_POWER_MGT_NORMAL);
        udelay(10);
        UN_OUT(UNI_N_HWINIT_STATE, UNI_N_HWINIT_STATE_RUNNING);
        udelay(10);

        /*
         * Restore KeyLargo
         */

        if (macio->type == macio_keylargo) {
                MACIO_OUT32(KEYLARGO_MBCR, save_mbcr);
                (void)MACIO_IN32(KEYLARGO_MBCR); udelay(10);
        }
        MACIO_OUT32(KEYLARGO_FCR0, save_fcr[0]);
        (void)MACIO_IN32(KEYLARGO_FCR0); udelay(10);
        MACIO_OUT32(KEYLARGO_FCR1, save_fcr[1]);
        (void)MACIO_IN32(KEYLARGO_FCR1); udelay(10);
        MACIO_OUT32(KEYLARGO_FCR2, save_fcr[2]);
        (void)MACIO_IN32(KEYLARGO_FCR2); udelay(10);
        MACIO_OUT32(KEYLARGO_FCR3, save_fcr[3]);
        (void)MACIO_IN32(KEYLARGO_FCR3); udelay(10);
        MACIO_OUT32(KEYLARGO_FCR4, save_fcr[4]);
        (void)MACIO_IN32(KEYLARGO_FCR4); udelay(10);
        if (macio->type == macio_pangea || macio->type == macio_intrepid) {
                MACIO_OUT32(KEYLARGO_FCR5, save_fcr[5]);
                (void)MACIO_IN32(KEYLARGO_FCR5); udelay(10);
        }

        dbdma_restore(macio, save_dbdma);

        MACIO_OUT32(KEYLARGO_GPIO_LEVELS0, save_gpio_levels[0]);
        MACIO_OUT32(KEYLARGO_GPIO_LEVELS1, save_gpio_levels[1]);
        for (i=0; i<KEYLARGO_GPIO_EXTINT_CNT; i++)
                MACIO_OUT8(KEYLARGO_GPIO_EXTINT_0+i, save_gpio_extint[i]);
        for (i=0; i<KEYLARGO_GPIO_CNT; i++)
                MACIO_OUT8(KEYLARGO_GPIO_0+i, save_gpio_normal[i]);

        /* FIXME more black magic with OpenPIC ... */
        if (pmac_mb.model_id == PMAC_TYPE_SAWTOOTH) {
                MACIO_BIC(0x506e0, 0x00400000);
                MACIO_BIC(0x506e0, 0x80000000);
        }

        UN_OUT(UNI_N_CLOCK_CNTL, save_unin_clock_ctl);
        udelay(100);

        return 0;
}

#endif /* CONFIG_PM */

static long
core99_sleep_state(struct device_node *node, long param, long value)
{
        /* Param == 1 means to enter the "fake sleep" mode that is
         * used for CPU speed switch
         */
        if (param == 1) {
                if (value == 1) {
                        UN_OUT(UNI_N_HWINIT_STATE, UNI_N_HWINIT_STATE_SLEEPING);
                        UN_OUT(UNI_N_POWER_MGT, UNI_N_POWER_MGT_IDLE2);
                } else {
                        UN_OUT(UNI_N_POWER_MGT, UNI_N_POWER_MGT_NORMAL);
                        udelay(10);
                        UN_OUT(UNI_N_HWINIT_STATE, UNI_N_HWINIT_STATE_RUNNING);
                        udelay(10);
                }
                return 0;
        }
        if ((pmac_mb.board_flags & PMAC_MB_CAN_SLEEP) == 0)
                return -EPERM;

#ifdef CONFIG_PM
        if (value == 1)
                return core99_sleep();
        else if (value == 0)
                return core99_wake_up();

#endif /* CONFIG_PM */
        return 0;
}

#endif /* CONFIG_PPC64 */

static long
generic_dev_can_wake(struct device_node *node, long param, long value)
{
        /* Todo: eventually check we are really dealing with on-board
         * video device ...
         */

        if (pmac_mb.board_flags & PMAC_MB_MAY_SLEEP)
                pmac_mb.board_flags |= PMAC_MB_CAN_SLEEP;
        return 0;
}

static long generic_get_mb_info(struct device_node *node, long param, long value)
{
        switch(param) {
                case PMAC_MB_INFO_MODEL:
                        return pmac_mb.model_id;
                case PMAC_MB_INFO_FLAGS:
                        return pmac_mb.board_flags;
                case PMAC_MB_INFO_NAME:
                        /* hack hack hack... but should work */
                        *((const char **)value) = pmac_mb.model_name;
                        return 0;
        }
        return -EINVAL;
}


/*
 * Table definitions
 */

/* Used on any machine
 */
static struct feature_table_entry any_features[] = {
        { PMAC_FTR_GET_MB_INFO,         generic_get_mb_info },
        { PMAC_FTR_DEVICE_CAN_WAKE,     generic_dev_can_wake },
        { 0, NULL }
};

#ifndef CONFIG_PPC64

/* OHare based motherboards. Currently, we only use these on the
 * 2400,3400 and 3500 series powerbooks. Some older desktops seem
 * to have issues with turning on/off those asic cells
 */
static struct feature_table_entry ohare_features[] = {
        { PMAC_FTR_SCC_ENABLE,          ohare_htw_scc_enable },
        { PMAC_FTR_SWIM3_ENABLE,        ohare_floppy_enable },
        { PMAC_FTR_MESH_ENABLE,         ohare_mesh_enable },
        { PMAC_FTR_IDE_ENABLE,          ohare_ide_enable},
        { PMAC_FTR_IDE_RESET,           ohare_ide_reset},
        { PMAC_FTR_SLEEP_STATE,         ohare_sleep_state },
        { 0, NULL }
};

/* Heathrow desktop machines (Beige G3).
 * Separated as some features couldn't be properly tested
 * and the serial port control bits appear to confuse it.
 */
static struct feature_table_entry heathrow_desktop_features[] = {
        { PMAC_FTR_SWIM3_ENABLE,        heathrow_floppy_enable },
        { PMAC_FTR_MESH_ENABLE,         heathrow_mesh_enable },
        { PMAC_FTR_IDE_ENABLE,          heathrow_ide_enable },
        { PMAC_FTR_IDE_RESET,           heathrow_ide_reset },
        { PMAC_FTR_BMAC_ENABLE,         heathrow_bmac_enable },
        { 0, NULL }
};

/* Heathrow based laptop, that is the Wallstreet and mainstreet
 * powerbooks.
 */
static struct feature_table_entry heathrow_laptop_features[] = {
        { PMAC_FTR_SCC_ENABLE,          ohare_htw_scc_enable },
        { PMAC_FTR_MODEM_ENABLE,        heathrow_modem_enable },
        { PMAC_FTR_SWIM3_ENABLE,        heathrow_floppy_enable },
        { PMAC_FTR_MESH_ENABLE,         heathrow_mesh_enable },
        { PMAC_FTR_IDE_ENABLE,          heathrow_ide_enable },
        { PMAC_FTR_IDE_RESET,           heathrow_ide_reset },
        { PMAC_FTR_BMAC_ENABLE,         heathrow_bmac_enable },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   heathrow_sound_enable },
        { PMAC_FTR_SLEEP_STATE,         heathrow_sleep_state },
        { 0, NULL }
};

/* Paddington based machines
 * The lombard (101) powerbook, first iMac models, B&W G3 and Yikes G4.
 */
static struct feature_table_entry paddington_features[] = {
        { PMAC_FTR_SCC_ENABLE,          ohare_htw_scc_enable },
        { PMAC_FTR_MODEM_ENABLE,        heathrow_modem_enable },
        { PMAC_FTR_SWIM3_ENABLE,        heathrow_floppy_enable },
        { PMAC_FTR_MESH_ENABLE,         heathrow_mesh_enable },
        { PMAC_FTR_IDE_ENABLE,          heathrow_ide_enable },
        { PMAC_FTR_IDE_RESET,           heathrow_ide_reset },
        { PMAC_FTR_BMAC_ENABLE,         heathrow_bmac_enable },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   heathrow_sound_enable },
        { PMAC_FTR_SLEEP_STATE,         heathrow_sleep_state },
        { 0, NULL }
};

/* Core99 & MacRISC 2 machines (all machines released since the
 * iBook (included), that is all AGP machines, except pangea
 * chipset. The pangea chipset is the "combo" UniNorth/KeyLargo
 * used on iBook2 & iMac "flow power".
 */
static struct feature_table_entry core99_features[] = {
        { PMAC_FTR_SCC_ENABLE,          core99_scc_enable },
        { PMAC_FTR_MODEM_ENABLE,        core99_modem_enable },
        { PMAC_FTR_IDE_ENABLE,          core99_ide_enable },
        { PMAC_FTR_IDE_RESET,           core99_ide_reset },
        { PMAC_FTR_GMAC_ENABLE,         core99_gmac_enable },
        { PMAC_FTR_GMAC_PHY_RESET,      core99_gmac_phy_reset },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   core99_sound_chip_enable },
        { PMAC_FTR_AIRPORT_ENABLE,      core99_airport_enable },
        { PMAC_FTR_USB_ENABLE,          core99_usb_enable },
        { PMAC_FTR_1394_ENABLE,         core99_firewire_enable },
        { PMAC_FTR_1394_CABLE_POWER,    core99_firewire_cable_power },
#ifdef CONFIG_PM
        { PMAC_FTR_SLEEP_STATE,         core99_sleep_state },
#endif
#ifdef CONFIG_SMP
        { PMAC_FTR_RESET_CPU,           core99_reset_cpu },
#endif /* CONFIG_SMP */
        { PMAC_FTR_READ_GPIO,           core99_read_gpio },
        { PMAC_FTR_WRITE_GPIO,          core99_write_gpio },
        { 0, NULL }
};

/* RackMac
 */
static struct feature_table_entry rackmac_features[] = {
        { PMAC_FTR_SCC_ENABLE,          core99_scc_enable },
        { PMAC_FTR_IDE_ENABLE,          core99_ide_enable },
        { PMAC_FTR_IDE_RESET,           core99_ide_reset },
        { PMAC_FTR_GMAC_ENABLE,         core99_gmac_enable },
        { PMAC_FTR_GMAC_PHY_RESET,      core99_gmac_phy_reset },
        { PMAC_FTR_USB_ENABLE,          core99_usb_enable },
        { PMAC_FTR_1394_ENABLE,         core99_firewire_enable },
        { PMAC_FTR_1394_CABLE_POWER,    core99_firewire_cable_power },
        { PMAC_FTR_SLEEP_STATE,         core99_sleep_state },
#ifdef CONFIG_SMP
        { PMAC_FTR_RESET_CPU,           core99_reset_cpu },
#endif /* CONFIG_SMP */
        { PMAC_FTR_READ_GPIO,           core99_read_gpio },
        { PMAC_FTR_WRITE_GPIO,          core99_write_gpio },
        { 0, NULL }
};

/* Pangea features
 */
static struct feature_table_entry pangea_features[] = {
        { PMAC_FTR_SCC_ENABLE,          core99_scc_enable },
        { PMAC_FTR_MODEM_ENABLE,        pangea_modem_enable },
        { PMAC_FTR_IDE_ENABLE,          core99_ide_enable },
        { PMAC_FTR_IDE_RESET,           core99_ide_reset },
        { PMAC_FTR_GMAC_ENABLE,         core99_gmac_enable },
        { PMAC_FTR_GMAC_PHY_RESET,      core99_gmac_phy_reset },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   core99_sound_chip_enable },
        { PMAC_FTR_AIRPORT_ENABLE,      core99_airport_enable },
        { PMAC_FTR_USB_ENABLE,          core99_usb_enable },
        { PMAC_FTR_1394_ENABLE,         core99_firewire_enable },
        { PMAC_FTR_1394_CABLE_POWER,    core99_firewire_cable_power },
        { PMAC_FTR_SLEEP_STATE,         core99_sleep_state },
        { PMAC_FTR_READ_GPIO,           core99_read_gpio },
        { PMAC_FTR_WRITE_GPIO,          core99_write_gpio },
        { 0, NULL }
};

/* Intrepid features
 */
static struct feature_table_entry intrepid_features[] = {
        { PMAC_FTR_SCC_ENABLE,          core99_scc_enable },
        { PMAC_FTR_MODEM_ENABLE,        pangea_modem_enable },
        { PMAC_FTR_IDE_ENABLE,          core99_ide_enable },
        { PMAC_FTR_IDE_RESET,           core99_ide_reset },
        { PMAC_FTR_GMAC_ENABLE,         core99_gmac_enable },
        { PMAC_FTR_GMAC_PHY_RESET,      core99_gmac_phy_reset },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   core99_sound_chip_enable },
        { PMAC_FTR_AIRPORT_ENABLE,      core99_airport_enable },
        { PMAC_FTR_USB_ENABLE,          core99_usb_enable },
        { PMAC_FTR_1394_ENABLE,         core99_firewire_enable },
        { PMAC_FTR_1394_CABLE_POWER,    core99_firewire_cable_power },
        { PMAC_FTR_SLEEP_STATE,         core99_sleep_state },
        { PMAC_FTR_READ_GPIO,           core99_read_gpio },
        { PMAC_FTR_WRITE_GPIO,          core99_write_gpio },
        { PMAC_FTR_AACK_DELAY_ENABLE,   intrepid_aack_delay_enable },
        { 0, NULL }
};

#else /* CONFIG_PPC64 */

/* G5 features
 */
static struct feature_table_entry g5_features[] = {
        { PMAC_FTR_GMAC_ENABLE,         g5_gmac_enable },
        { PMAC_FTR_1394_ENABLE,         g5_fw_enable },
        { PMAC_FTR_ENABLE_MPIC,         g5_mpic_enable },
        { PMAC_FTR_GMAC_PHY_RESET,      g5_eth_phy_reset },
        { PMAC_FTR_SOUND_CHIP_ENABLE,   g5_i2s_enable },
#ifdef CONFIG_SMP
        { PMAC_FTR_RESET_CPU,           g5_reset_cpu },
#endif /* CONFIG_SMP */
        { PMAC_FTR_READ_GPIO,           core99_read_gpio },
        { PMAC_FTR_WRITE_GPIO,          core99_write_gpio },
        { 0, NULL }
};

#endif /* CONFIG_PPC64 */

static struct pmac_mb_def pmac_mb_defs[] = {
#ifndef CONFIG_PPC64
        /*
         * Desktops
         */

        {       "AAPL,8500",                    "PowerMac 8500/8600",
                PMAC_TYPE_PSURGE,               NULL,
                0
        },
        {       "AAPL,9500",                    "PowerMac 9500/9600",
                PMAC_TYPE_PSURGE,               NULL,
                0
        },
        {       "AAPL,7200",                    "PowerMac 7200",
                PMAC_TYPE_PSURGE,               NULL,
                0
        },
        {       "AAPL,7300",                    "PowerMac 7200/7300",
                PMAC_TYPE_PSURGE,               NULL,
                0
        },
        {       "AAPL,7500",                    "PowerMac 7500",
                PMAC_TYPE_PSURGE,               NULL,
                0
        },
        {       "AAPL,ShinerESB",               "Apple Network Server",
                PMAC_TYPE_ANS,                  NULL,
                0
        },
        {       "AAPL,e407",                    "Alchemy",
                PMAC_TYPE_ALCHEMY,              NULL,
                0
        },
        {       "AAPL,e411",                    "Gazelle",
                PMAC_TYPE_GAZELLE,              NULL,
                0
        },
        {       "AAPL,Gossamer",                "PowerMac G3 (Gossamer)",
                PMAC_TYPE_GOSSAMER,             heathrow_desktop_features,
                0
        },
        {       "AAPL,PowerMac G3",             "PowerMac G3 (Silk)",
                PMAC_TYPE_SILK,                 heathrow_desktop_features,
                0
        },
        {       "PowerMac1,1",                  "Blue&White G3",
                PMAC_TYPE_YOSEMITE,             paddington_features,
                0
        },
        {       "PowerMac1,2",                  "PowerMac G4 PCI Graphics",
                PMAC_TYPE_YIKES,                paddington_features,
                0
        },
        {       "PowerMac2,1",                  "iMac FireWire",
                PMAC_TYPE_FW_IMAC,              core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_OLD_CORE99
        },
        {       "PowerMac2,2",                  "iMac FireWire",
                PMAC_TYPE_FW_IMAC,              core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_OLD_CORE99
        },
        {       "PowerMac3,1",                  "PowerMac G4 AGP Graphics",
                PMAC_TYPE_SAWTOOTH,             core99_features,
                PMAC_MB_OLD_CORE99
        },
        {       "PowerMac3,2",                  "PowerMac G4 AGP Graphics",
                PMAC_TYPE_SAWTOOTH,             core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_OLD_CORE99
        },
        {       "PowerMac3,3",                  "PowerMac G4 AGP Graphics",
                PMAC_TYPE_SAWTOOTH,             core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_OLD_CORE99
        },
        {       "PowerMac3,4",                  "PowerMac G4 Silver",
                PMAC_TYPE_QUICKSILVER,          core99_features,
                PMAC_MB_MAY_SLEEP
        },
        {       "PowerMac3,5",                  "PowerMac G4 Silver",
                PMAC_TYPE_QUICKSILVER,          core99_features,
                PMAC_MB_MAY_SLEEP
        },
        {       "PowerMac3,6",                  "PowerMac G4 Windtunnel",
                PMAC_TYPE_WINDTUNNEL,           core99_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "PowerMac4,1",                  "iMac \"Flower Power\"",
                PMAC_TYPE_PANGEA_IMAC,          pangea_features,
                PMAC_MB_MAY_SLEEP
        },
        {       "PowerMac4,2",                  "Flat panel iMac",
                PMAC_TYPE_FLAT_PANEL_IMAC,      pangea_features,
                PMAC_MB_CAN_SLEEP
        },
        {       "PowerMac4,4",                  "eMac",
                PMAC_TYPE_EMAC,                 core99_features,
                PMAC_MB_MAY_SLEEP
        },
        {       "PowerMac5,1",                  "PowerMac G4 Cube",
                PMAC_TYPE_CUBE,                 core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_OLD_CORE99
        },
        {       "PowerMac6,1",                  "Flat panel iMac",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "PowerMac6,3",                  "Flat panel iMac",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "PowerMac6,4",                  "eMac",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "PowerMac10,1",                 "Mac mini",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "PowerMac10,2",                 "Mac mini (Late 2005)",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP,
        },
        {       "iMac,1",                       "iMac (first generation)",
                PMAC_TYPE_ORIG_IMAC,            paddington_features,
                0
        },

        /*
         * Xserve's
         */

        {       "RackMac1,1",                   "XServe",
                PMAC_TYPE_RACKMAC,              rackmac_features,
                0,
        },
        {       "RackMac1,2",                   "XServe rev. 2",
                PMAC_TYPE_RACKMAC,              rackmac_features,
                0,
        },

        /*
         * Laptops
         */

        {       "AAPL,3400/2400",               "PowerBook 3400",
                PMAC_TYPE_HOOPER,               ohare_features,
                PMAC_MB_CAN_SLEEP | PMAC_MB_MOBILE
        },
        {       "AAPL,3500",                    "PowerBook 3500",
                PMAC_TYPE_KANGA,                ohare_features,
                PMAC_MB_CAN_SLEEP | PMAC_MB_MOBILE
        },
        {       "AAPL,PowerBook1998",           "PowerBook Wallstreet",
                PMAC_TYPE_WALLSTREET,           heathrow_laptop_features,
                PMAC_MB_CAN_SLEEP | PMAC_MB_MOBILE
        },
        {       "PowerBook1,1",                 "PowerBook 101 (Lombard)",
                PMAC_TYPE_101_PBOOK,            paddington_features,
                PMAC_MB_CAN_SLEEP | PMAC_MB_MOBILE
        },
        {       "PowerBook2,1",                 "iBook (first generation)",
                PMAC_TYPE_ORIG_IBOOK,           core99_features,
                PMAC_MB_CAN_SLEEP | PMAC_MB_OLD_CORE99 | PMAC_MB_MOBILE
        },
        {       "PowerBook2,2",                 "iBook FireWire",
                PMAC_TYPE_FW_IBOOK,             core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER |
                PMAC_MB_OLD_CORE99 | PMAC_MB_MOBILE
        },
        {       "PowerBook3,1",                 "PowerBook Pismo",
                PMAC_TYPE_PISMO,                core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER |
                PMAC_MB_OLD_CORE99 | PMAC_MB_MOBILE
        },
        {       "PowerBook3,2",                 "PowerBook Titanium",
                PMAC_TYPE_TITANIUM,             core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook3,3",                 "PowerBook Titanium II",
                PMAC_TYPE_TITANIUM2,            core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook3,4",                 "PowerBook Titanium III",
                PMAC_TYPE_TITANIUM3,            core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook3,5",                 "PowerBook Titanium IV",
                PMAC_TYPE_TITANIUM4,            core99_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook4,1",                 "iBook 2",
                PMAC_TYPE_IBOOK2,               pangea_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook4,2",                 "iBook 2",
                PMAC_TYPE_IBOOK2,               pangea_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook4,3",                 "iBook 2 rev. 2",
                PMAC_TYPE_IBOOK2,               pangea_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE
        },
        {       "PowerBook5,1",                 "PowerBook G4 17\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,2",                 "PowerBook G4 15\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,3",                 "PowerBook G4 17\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,4",                 "PowerBook G4 15\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,5",                 "PowerBook G4 17\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,6",                 "PowerBook G4 15\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,7",                 "PowerBook G4 17\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,8",                 "PowerBook G4 15\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP  | PMAC_MB_MOBILE,
        },
        {       "PowerBook5,9",                 "PowerBook G4 17\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,1",                 "PowerBook G4 12\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,2",                 "PowerBook G4",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,3",                 "iBook G4",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,4",                 "PowerBook G4 12\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,5",                 "iBook G4",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,7",                 "iBook G4",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
        {       "PowerBook6,8",                 "PowerBook G4 12\"",
                PMAC_TYPE_UNKNOWN_INTREPID,     intrepid_features,
                PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
        },
#else /* CONFIG_PPC64 */
        {       "PowerMac7,2",                  "PowerMac G5",
                PMAC_TYPE_POWERMAC_G5,          g5_features,
                0,
        },
        {       "PowerMac7,3",                  "PowerMac G5",
                PMAC_TYPE_POWERMAC_G5,          g5_features,
                0,
        },
        {       "PowerMac8,1",                  "iMac G5",
                PMAC_TYPE_IMAC_G5,              g5_features,
                0,
        },
        {       "PowerMac9,1",                  "PowerMac G5",
                PMAC_TYPE_POWERMAC_G5_U3L,      g5_features,
                0,
        },
        {       "PowerMac11,2",                 "PowerMac G5 Dual Core",
                PMAC_TYPE_POWERMAC_G5_U3L,      g5_features,
                0,
        },
        {       "PowerMac12,1",                 "iMac G5 (iSight)",
                PMAC_TYPE_POWERMAC_G5_U3L,      g5_features,
                0,
        },
        {       "RackMac3,1",                   "XServe G5",
                PMAC_TYPE_XSERVE_G5,            g5_features,
                0,
        },
#endif /* CONFIG_PPC64 */
};

/*
 * The toplevel feature_call callback
 */
long pmac_do_feature_call(unsigned int selector, ...)
{
        struct device_node *node;
        long param, value;
        int i;
        feature_call func = NULL;
        va_list args;

        if (pmac_mb.features)
                for (i=0; pmac_mb.features[i].function; i++)
                        if (pmac_mb.features[i].selector == selector) {
                                func = pmac_mb.features[i].function;
                                break;
                        }
        if (!func)
                for (i=0; any_features[i].function; i++)
                        if (any_features[i].selector == selector) {
                                func = any_features[i].function;
                                break;
                        }
        if (!func)
                return -ENODEV;

        va_start(args, selector);
        node = (struct device_node*)va_arg(args, void*);
        param = va_arg(args, long);
        value = va_arg(args, long);
        va_end(args);

        return func(node, param, value);
}

static int __init probe_motherboard(void)
{
        int i;
        struct macio_chip *macio = &macio_chips[0];
        const char *model = NULL;
        struct device_node *dt;
        int ret = 0;

        /* Lookup known motherboard type in device-tree. First try an
         * exact match on the "model" property, then try a "compatible"
         * match is none is found.
         */
        dt = of_find_node_by_name(NULL, "device-tree");
        if (dt != NULL)
                model = of_get_property(dt, "model", NULL);
        for(i=0; model && i<ARRAY_SIZE(pmac_mb_defs); i++) {
            if (strcmp(model, pmac_mb_defs[i].model_string) == 0) {
                pmac_mb = pmac_mb_defs[i];
                goto found;
            }
        }
        for(i=0; i<ARRAY_SIZE(pmac_mb_defs); i++) {
            if (of_machine_is_compatible(pmac_mb_defs[i].model_string)) {
                pmac_mb = pmac_mb_defs[i];
                goto found;
            }
        }

        /* Fallback to selection depending on mac-io chip type */
        switch(macio->type) {
#ifndef CONFIG_PPC64
            case macio_grand_central:
                pmac_mb.model_id = PMAC_TYPE_PSURGE;
                pmac_mb.model_name = "Unknown PowerSurge";
                break;
            case macio_ohare:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_OHARE;
                pmac_mb.model_name = "Unknown OHare-based";
                break;
            case macio_heathrow:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_HEATHROW;
                pmac_mb.model_name = "Unknown Heathrow-based";
                pmac_mb.features = heathrow_desktop_features;
                break;
            case macio_paddington:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_PADDINGTON;
                pmac_mb.model_name = "Unknown Paddington-based";
                pmac_mb.features = paddington_features;
                break;
            case macio_keylargo:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_CORE99;
                pmac_mb.model_name = "Unknown Keylargo-based";
                pmac_mb.features = core99_features;
                break;
            case macio_pangea:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_PANGEA;
                pmac_mb.model_name = "Unknown Pangea-based";
                pmac_mb.features = pangea_features;
                break;
            case macio_intrepid:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_INTREPID;
                pmac_mb.model_name = "Unknown Intrepid-based";
                pmac_mb.features = intrepid_features;
                break;
#else /* CONFIG_PPC64 */
        case macio_keylargo2:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_K2;
                pmac_mb.model_name = "Unknown K2-based";
                pmac_mb.features = g5_features;
                break;
        case macio_shasta:
                pmac_mb.model_id = PMAC_TYPE_UNKNOWN_SHASTA;
                pmac_mb.model_name = "Unknown Shasta-based";
                pmac_mb.features = g5_features;
                break;
#endif /* CONFIG_PPC64 */
        default:
                ret = -ENODEV;
                goto done;
        }
found:
#ifndef CONFIG_PPC64
        /* Fixup Hooper vs. Comet */
        if (pmac_mb.model_id == PMAC_TYPE_HOOPER) {
                u32 __iomem * mach_id_ptr = ioremap(0xf3000034, 4);
                if (!mach_id_ptr) {
                        ret = -ENODEV;
                        goto done;
                }
                /* Here, I used to disable the media-bay on comet. It
                 * appears this is wrong, the floppy connector is actually
                 * a kind of media-bay and works with the current driver.
                 */
                if (__raw_readl(mach_id_ptr) & 0x20000000UL)
                        pmac_mb.model_id = PMAC_TYPE_COMET;
                iounmap(mach_id_ptr);
        }

        /* Set default value of powersave_nap on machines that support it.
         * It appears that uninorth rev 3 has a problem with it, we don't
         * enable it on those. In theory, the flush-on-lock property is
         * supposed to be set when not supported, but I'm not very confident
         * that all Apple OF revs did it properly, I do it the paranoid way.
         */
        if (uninorth_base && uninorth_rev > 3) {
                struct device_node *np;

                for_each_of_cpu_node(np) {
                        int cpu_count = 1;

                        /* Nap mode not supported on SMP */
                        if (of_property_read_bool(np, "flush-on-lock") ||
                            (cpu_count > 1)) {
                                powersave_nap = 0;
                                of_node_put(np);
                                break;
                        }

                        cpu_count++;
                        powersave_nap = 1;
                }
        }
        if (powersave_nap)
                printk(KERN_DEBUG "Processor NAP mode on idle enabled.\n");

        /* On CPUs that support it (750FX), lowspeed by default during
         * NAP mode
         */
        powersave_lowspeed = 1;

#else /* CONFIG_PPC64 */
        powersave_nap = 1;
#endif  /* CONFIG_PPC64 */

        /* Check for "mobile" machine */
        if (model && (strncmp(model, "PowerBook", 9) == 0
                   || strncmp(model, "iBook", 5) == 0))
                pmac_mb.board_flags |= PMAC_MB_MOBILE;


        printk(KERN_INFO "PowerMac motherboard: %s\n", pmac_mb.model_name);
done:
        of_node_put(dt);
        return ret;
}

/* Initialize the Core99 UniNorth host bridge and memory controller
 */
static void __init probe_uninorth(void)
{
        struct resource res;
        unsigned long actrl;

        /* Locate core99 Uni-N */
        uninorth_node = of_find_node_by_name(NULL, "uni-n");
        uninorth_maj = 1;

        /* Locate G5 u3 */
        if (uninorth_node == NULL) {
                uninorth_node = of_find_node_by_name(NULL, "u3");
                uninorth_maj = 3;
        }
        /* Locate G5 u4 */
        if (uninorth_node == NULL) {
                uninorth_node = of_find_node_by_name(NULL, "u4");
                uninorth_maj = 4;
        }
        if (uninorth_node == NULL) {
                uninorth_maj = 0;
                return;
        }

        if (of_address_to_resource(uninorth_node, 0, &res))
                return;

        uninorth_base = ioremap(res.start, 0x40000);
        if (uninorth_base == NULL)
                return;
        uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
        if (uninorth_maj == 3 || uninorth_maj == 4) {
                u3_ht_base = ioremap(res.start + U3_HT_CONFIG_BASE, 0x1000);
                if (u3_ht_base == NULL) {
                        iounmap(uninorth_base);
                        return;
                }
        }

        printk(KERN_INFO "Found %s memory controller & host bridge"
               " @ 0x%08x revision: 0x%02x\n", uninorth_maj == 3 ? "U3" :
               uninorth_maj == 4 ? "U4" : "UniNorth",
               (unsigned int)res.start, uninorth_rev);
        printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base);

        /* Set the arbitrer QAck delay according to what Apple does
         */
        if (uninorth_rev < 0x11) {
                actrl = UN_IN(UNI_N_ARB_CTRL) & ~UNI_N_ARB_CTRL_QACK_DELAY_MASK;
                actrl |= ((uninorth_rev < 3) ? UNI_N_ARB_CTRL_QACK_DELAY105 :
                        UNI_N_ARB_CTRL_QACK_DELAY) <<
                        UNI_N_ARB_CTRL_QACK_DELAY_SHIFT;
                UN_OUT(UNI_N_ARB_CTRL, actrl);
        }

        /* Some more magic as done by them in recent MacOS X on UniNorth
         * revs 1.5 to 2.O and Pangea. Seem to toggle the UniN Maxbus/PCI
         * memory timeout
         */
        if ((uninorth_rev >= 0x11 && uninorth_rev <= 0x24) ||
            uninorth_rev == 0xc0)
                UN_OUT(0x2160, UN_IN(0x2160) & 0x00ffffff);
}

static void __init probe_one_macio(const char *name, const char *compat, int type)
{
        struct device_node*     node;
        int                     i;
        volatile u32 __iomem    *base;
        const __be32            *addrp;
        const u32               *revp;
        phys_addr_t             addr;
        u64                     size;

        for_each_node_by_name(node, name) {
                if (!compat)
                        break;
                if (of_device_is_compatible(node, compat))
                        break;
        }
        if (!node)
                return;
        for(i=0; i<MAX_MACIO_CHIPS; i++) {
                if (!macio_chips[i].of_node)
                        break;
                if (macio_chips[i].of_node == node)
                        goto out_put;
        }

        if (i >= MAX_MACIO_CHIPS) {
                printk(KERN_ERR "pmac_feature: Please increase MAX_MACIO_CHIPS !\n");
                printk(KERN_ERR "pmac_feature: %pOF skipped\n", node);
                goto out_put;
        }
        addrp = of_get_pci_address(node, 0, &size, NULL);
        if (addrp == NULL) {
                printk(KERN_ERR "pmac_feature: %pOF: can't find base !\n",
                       node);
                goto out_put;
        }
        addr = of_translate_address(node, addrp);
        if (addr == 0) {
                printk(KERN_ERR "pmac_feature: %pOF, can't translate base !\n",
                       node);
                goto out_put;
        }
        base = ioremap(addr, (unsigned long)size);
        if (!base) {
                printk(KERN_ERR "pmac_feature: %pOF, can't map mac-io chip !\n",
                       node);
                goto out_put;
        }
        if (type == macio_keylargo || type == macio_keylargo2) {
                const u32 *did = of_get_property(node, "device-id", NULL);
                if (*did == 0x00000025)
                        type = macio_pangea;
                if (*did == 0x0000003e)
                        type = macio_intrepid;
                if (*did == 0x0000004f)
                        type = macio_shasta;
        }
        macio_chips[i].of_node  = node;
        macio_chips[i].type     = type;
        macio_chips[i].base     = base;
        macio_chips[i].flags    = MACIO_FLAG_SCCA_ON | MACIO_FLAG_SCCB_ON;
        macio_chips[i].name     = macio_names[type];
        revp = of_get_property(node, "revision-id", NULL);
        if (revp)
                macio_chips[i].rev = *revp;
        printk(KERN_INFO "Found a %s mac-io controller, rev: %d, mapped at 0x%p\n",
                macio_names[type], macio_chips[i].rev, macio_chips[i].base);

        return;

out_put:
        of_node_put(node);
}

static int __init
probe_macios(void)
{
        /* Warning, ordering is important */
        probe_one_macio("gc", NULL, macio_grand_central);
        probe_one_macio("ohare", NULL, macio_ohare);
        probe_one_macio("pci106b,7", NULL, macio_ohareII);
        probe_one_macio("mac-io", "keylargo", macio_keylargo);
        probe_one_macio("mac-io", "paddington", macio_paddington);
        probe_one_macio("mac-io", "gatwick", macio_gatwick);
        probe_one_macio("mac-io", "heathrow", macio_heathrow);
        probe_one_macio("mac-io", "K2-Keylargo", macio_keylargo2);

        /* Make sure the "main" macio chip appear first */
        if (macio_chips[0].type == macio_gatwick
            && macio_chips[1].type == macio_heathrow) {
                struct macio_chip temp = macio_chips[0];
                macio_chips[0] = macio_chips[1];
                macio_chips[1] = temp;
        }
        if (macio_chips[0].type == macio_ohareII
            && macio_chips[1].type == macio_ohare) {
                struct macio_chip temp = macio_chips[0];
                macio_chips[0] = macio_chips[1];
                macio_chips[1] = temp;
        }
        macio_chips[0].lbus.index = 0;
        macio_chips[1].lbus.index = 1;

        return (macio_chips[0].of_node == NULL) ? -ENODEV : 0;
}

static void __init
initial_serial_shutdown(struct device_node *np)
{
        int len;
        const struct slot_names_prop {
                int     count;
                char    name[1];
        } *slots;
        const char *conn;
        int port_type = PMAC_SCC_ASYNC;
        int modem = 0;

        slots = of_get_property(np, "slot-names", &len);
        conn = of_get_property(np, "AAPL,connector", &len);
        if (conn && (strcmp(conn, "infrared") == 0))
                port_type = PMAC_SCC_IRDA;
        else if (of_device_is_compatible(np, "cobalt"))
                modem = 1;
        else if (slots && slots->count > 0) {
                if (strcmp(slots->name, "IrDA") == 0)
                        port_type = PMAC_SCC_IRDA;
                else if (strcmp(slots->name, "Modem") == 0)
                        modem = 1;
        }
        if (modem)
                pmac_call_feature(PMAC_FTR_MODEM_ENABLE, np, 0, 0);
        pmac_call_feature(PMAC_FTR_SCC_ENABLE, np, port_type, 0);
}

static void __init
set_initial_features(void)
{
        struct device_node *np;

        /* That hack appears to be necessary for some StarMax motherboards
         * but I'm not too sure it was audited for side-effects on other
         * ohare based machines...
         * Since I still have difficulties figuring the right way to
         * differentiate them all and since that hack was there for a long
         * time, I'll keep it around
         */
        if (macio_chips[0].type == macio_ohare) {
                struct macio_chip *macio = &macio_chips[0];
                np = of_find_node_by_name(NULL, "via-pmu");
                if (np)
                        MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
                else
                        MACIO_OUT32(OHARE_FCR, STARMAX_FEATURES);
                of_node_put(np);
        } else if (macio_chips[1].type == macio_ohare) {
                struct macio_chip *macio = &macio_chips[1];
                MACIO_BIS(OHARE_FCR, OH_IOBUS_ENABLE);
        }

#ifdef CONFIG_PPC64
        if (macio_chips[0].type == macio_keylargo2 ||
            macio_chips[0].type == macio_shasta) {
#ifndef CONFIG_SMP
                /* On SMP machines running UP, we have the second CPU eating
                 * bus cycles. We need to take it off the bus. This is done
                 * from pmac_smp for SMP kernels running on one CPU
                 */
                np = of_find_node_by_type(NULL, "cpu");
                if (np != NULL)
                        np = of_find_node_by_type(np, "cpu");
                if (np != NULL) {
                        g5_phy_disable_cpu1();
                        of_node_put(np);
                }
#endif /* CONFIG_SMP */
                /* Enable GMAC for now for PCI probing. It will be disabled
                 * later on after PCI probe
                 */
                for_each_node_by_name(np, "ethernet")
                        if (of_device_is_compatible(np, "K2-GMAC"))
                                g5_gmac_enable(np, 0, 1);

                /* Enable FW before PCI probe. Will be disabled later on
                 * Note: We should have a batter way to check that we are
                 * dealing with uninorth internal cell and not a PCI cell
                 * on the external PCI. The code below works though.
                 */
                for_each_node_by_name(np, "firewire") {
                        if (of_device_is_compatible(np, "pci106b,5811")) {
                                macio_chips[0].flags |= MACIO_FLAG_FW_SUPPORTED;
                                g5_fw_enable(np, 0, 1);
                        }
                }
        }
#else /* CONFIG_PPC64 */

        if (macio_chips[0].type == macio_keylargo ||
            macio_chips[0].type == macio_pangea ||
            macio_chips[0].type == macio_intrepid) {
                /* Enable GMAC for now for PCI probing. It will be disabled
                 * later on after PCI probe
                 */
                for_each_node_by_name(np, "ethernet") {
                        if (np->parent
                            && of_device_is_compatible(np->parent, "uni-north")
                            && of_device_is_compatible(np, "gmac"))
                                core99_gmac_enable(np, 0, 1);
                }

                /* Enable FW before PCI probe. Will be disabled later on
                 * Note: We should have a batter way to check that we are
                 * dealing with uninorth internal cell and not a PCI cell
                 * on the external PCI. The code below works though.
                 */
                for_each_node_by_name(np, "firewire") {
                        if (np->parent
                            && of_device_is_compatible(np->parent, "uni-north")
                            && (of_device_is_compatible(np, "pci106b,18") ||
                                of_device_is_compatible(np, "pci106b,30") ||
                                of_device_is_compatible(np, "pci11c1,5811"))) {
                                macio_chips[0].flags |= MACIO_FLAG_FW_SUPPORTED;
                                core99_firewire_enable(np, 0, 1);
                        }
                }

                /* Enable ATA-100 before PCI probe. */
                for_each_node_by_name(np, "ata-6") {
                        if (np->parent
                            && of_device_is_compatible(np->parent, "uni-north")
                            && of_device_is_compatible(np, "kauai-ata")) {
                                core99_ata100_enable(np, 1);
                        }
                }

                /* Switch airport off */
                for_each_node_by_name(np, "radio") {
                        if (np->parent == macio_chips[0].of_node) {
                                macio_chips[0].flags |= MACIO_FLAG_AIRPORT_ON;
                                core99_airport_enable(np, 0, 0);
                        }
                }
        }

        /* On all machines that support sound PM, switch sound off */
        if (macio_chips[0].of_node)
                pmac_do_feature_call(PMAC_FTR_SOUND_CHIP_ENABLE,
                        macio_chips[0].of_node, 0, 0);

        /* While on some desktop G3s, we turn it back on */
        if (macio_chips[0].of_node && macio_chips[0].type == macio_heathrow
                && (pmac_mb.model_id == PMAC_TYPE_GOSSAMER ||
                    pmac_mb.model_id == PMAC_TYPE_SILK)) {
                struct macio_chip *macio = &macio_chips[0];
                MACIO_BIS(HEATHROW_FCR, HRW_SOUND_CLK_ENABLE);
                MACIO_BIC(HEATHROW_FCR, HRW_SOUND_POWER_N);
        }

#endif /* CONFIG_PPC64 */

        /* On all machines, switch modem & serial ports off */
        for_each_node_by_name(np, "ch-a")
                initial_serial_shutdown(np);
        for_each_node_by_name(np, "ch-b")
                initial_serial_shutdown(np);
}

void __init
pmac_feature_init(void)
{
        /* Detect the UniNorth memory controller */
        probe_uninorth();

        /* Probe mac-io controllers */
        if (probe_macios()) {
                printk(KERN_WARNING "No mac-io chip found\n");
                return;
        }

        /* Probe machine type */
        if (probe_motherboard())
                printk(KERN_WARNING "Unknown PowerMac !\n");

        /* Set some initial features (turn off some chips that will
         * be later turned on)
         */
        set_initial_features();
}

#if 0
static void dump_HT_speeds(char *name, u32 cfg, u32 frq)
{
        int     freqs[16] = { 200,300,400,500,600,800,1000,0,0,0,0,0,0,0,0,0 };
        int     bits[8] = { 8,16,0,32,2,4,0,0 };
        int     freq = (frq >> 8) & 0xf;

        if (freqs[freq] == 0)
                printk("%s: Unknown HT link frequency %x\n", name, freq);
        else
                printk("%s: %d MHz on main link, (%d in / %d out) bits width\n",
                       name, freqs[freq],
                       bits[(cfg >> 28) & 0x7], bits[(cfg >> 24) & 0x7]);
}

void __init pmac_check_ht_link(void)
{
        u32     ufreq, freq, ucfg, cfg;
        struct device_node *pcix_node;
        u8      px_bus, px_devfn;
        struct pci_controller *px_hose;

        (void)in_be32(u3_ht_base + U3_HT_LINK_COMMAND);
        ucfg = cfg = in_be32(u3_ht_base + U3_HT_LINK_CONFIG);
        ufreq = freq = in_be32(u3_ht_base + U3_HT_LINK_FREQ);
        dump_HT_speeds("U3 HyperTransport", cfg, freq);

        pcix_node = of_find_compatible_node(NULL, "pci", "pci-x");
        if (pcix_node == NULL) {
                printk("No PCI-X bridge found\n");
                return;
        }
        if (pci_device_from_OF_node(pcix_node, &px_bus, &px_devfn) != 0) {
                printk("PCI-X bridge found but not matched to pci\n");
                return;
        }
        px_hose = pci_find_hose_for_OF_device(pcix_node);
        if (px_hose == NULL) {
                printk("PCI-X bridge found but not matched to host\n");
                return;
        }       
        early_read_config_dword(px_hose, px_bus, px_devfn, 0xc4, &cfg);
        early_read_config_dword(px_hose, px_bus, px_devfn, 0xcc, &freq);
        dump_HT_speeds("PCI-X HT Uplink", cfg, freq);
        early_read_config_dword(px_hose, px_bus, px_devfn, 0xc8, &cfg);
        early_read_config_dword(px_hose, px_bus, px_devfn, 0xd0, &freq);
        dump_HT_speeds("PCI-X HT Downlink", cfg, freq);
}
#endif /* 0 */

/*
 * Early video resume hook
 */

static void (*pmac_early_vresume_proc)(void *data);
static void *pmac_early_vresume_data;

void pmac_set_early_video_resume(void (*proc)(void *data), void *data)
{
        if (!machine_is(powermac))
                return;
        preempt_disable();
        pmac_early_vresume_proc = proc;
        pmac_early_vresume_data = data;
        preempt_enable();
}
EXPORT_SYMBOL(pmac_set_early_video_resume);

void pmac_call_early_video_resume(void)
{
        if (pmac_early_vresume_proc)
                pmac_early_vresume_proc(pmac_early_vresume_data);
}

/*
 * AGP related suspend/resume code
 */

static struct pci_dev *pmac_agp_bridge;
static int (*pmac_agp_suspend)(struct pci_dev *bridge);
static int (*pmac_agp_resume)(struct pci_dev *bridge);

void pmac_register_agp_pm(struct pci_dev *bridge,
                                 int (*suspend)(struct pci_dev *bridge),
                                 int (*resume)(struct pci_dev *bridge))
{
        if (suspend || resume) {
                pmac_agp_bridge = bridge;
                pmac_agp_suspend = suspend;
                pmac_agp_resume = resume;
                return;
        }
        if (bridge != pmac_agp_bridge)
                return;
        pmac_agp_suspend = pmac_agp_resume = NULL;
        return;
}
EXPORT_SYMBOL(pmac_register_agp_pm);

void pmac_suspend_agp_for_card(struct pci_dev *dev)
{
        if (pmac_agp_bridge == NULL || pmac_agp_suspend == NULL)
                return;
        if (pmac_agp_bridge->bus != dev->bus)
                return;
        pmac_agp_suspend(pmac_agp_bridge);
}
EXPORT_SYMBOL(pmac_suspend_agp_for_card);

void pmac_resume_agp_for_card(struct pci_dev *dev)
{
        if (pmac_agp_bridge == NULL || pmac_agp_resume == NULL)
                return;
        if (pmac_agp_bridge->bus != dev->bus)
                return;
        pmac_agp_resume(pmac_agp_bridge);
}
EXPORT_SYMBOL(pmac_resume_agp_for_card);

int pmac_get_uninorth_variant(void)
{
        return uninorth_maj;
}