/*********************************************************************
 *                
 * Filename:      ali-ircc.h
 * Version:       0.5
 * Description:   Driver for the ALI M1535D and M1543C FIR Controller
 * Status:        Experimental.
 * Author:        Benjamin Kong <benjamin_kong@ali.com.tw>
 * Created at:    2000/10/16 03:46PM
 * Modified at:   2001/1/3 02:55PM
 * Modified by:   Benjamin Kong <benjamin_kong@ali.com.tw>
 * Modified at:   2003/11/6 and support for ALi south-bridge chipsets M1563
 * Modified by:   Clear Zhang <clear_zhang@ali.com.tw>
 * 
 *     Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
 *     All Rights Reserved
 *      
 *     This program is free software; you can redistribute it and/or 
 *     modify it under the terms of the GNU General Public License as 
 *     published by the Free Software Foundation; either version 2 of 
 *     the License, or (at your option) any later version.
 *  
 ********************************************************************/

#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/rtnetlink.h>
#include <linux/serial_reg.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>

#include <asm/io.h>
#include <asm/dma.h>
#include <asm/byteorder.h>

#include <net/irda/wrapper.h>
#include <net/irda/irda.h>
#include <net/irda/irda_device.h>

#include "ali-ircc.h"

#define CHIP_IO_EXTENT 8
#define BROKEN_DONGLE_ID

#define ALI_IRCC_DRIVER_NAME "ali-ircc"

/* Power Management */
static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
static int ali_ircc_resume(struct platform_device *dev);

static struct platform_driver ali_ircc_driver = {
        .suspend        = ali_ircc_suspend,
        .resume         = ali_ircc_resume,
        .driver         = {
                .name   = ALI_IRCC_DRIVER_NAME,
                .owner  = THIS_MODULE,
        },
};

/* Module parameters */
static int qos_mtt_bits = 0x07;  /* 1 ms or more */

/* Use BIOS settions by default, but user may supply module parameters */
static unsigned int io[]  = { ~0, ~0, ~0, ~0 };
static unsigned int irq[] = { 0, 0, 0, 0 };
static unsigned int dma[] = { 0, 0, 0, 0 };

static int  ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
static int  ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
static int  ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);

/* These are the currently known ALi sourth-bridge chipsets, the only one difference
 * is that M1543C doesn't support HP HDSL-3600
 */
static ali_chip_t chips[] =
{
        { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
        { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
        { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
        { NULL }
};

/* Max 4 instances for now */
static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };

/* Dongle Types */
static char *dongle_types[] = {
        "TFDS6000",
        "HP HSDL-3600",
        "HP HSDL-1100", 
        "No dongle connected",
};

/* Some prototypes */
static int  ali_ircc_open(int i, chipio_t *info);

static int  ali_ircc_close(struct ali_ircc_cb *self);

static int  ali_ircc_setup(chipio_t *info);
static int  ali_ircc_is_receiving(struct ali_ircc_cb *self);
static int  ali_ircc_net_open(struct net_device *dev);
static int  ali_ircc_net_close(struct net_device *dev);
static int  ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);

/* SIR function */
static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
                                                struct net_device *dev);
static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
static int  ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);

/* FIR function */
static netdev_tx_t  ali_ircc_fir_hard_xmit(struct sk_buff *skb,
                                                 struct net_device *dev);
static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
static int  ali_ircc_dma_receive(struct ali_ircc_cb *self); 
static int  ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
static int  ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);

/* My Function */
static int  ali_ircc_read_dongle_id (int i, chipio_t *info);
static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);

/* ALi chip function */
static void SIR2FIR(int iobase);
static void FIR2SIR(int iobase);
static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);

/*
 * Function ali_ircc_init ()
 *
 *    Initialize chip. Find out whay kinds of chips we are dealing with
 *    and their configuation registers address
 */
static int __init ali_ircc_init(void)
{
        ali_chip_t *chip;
        chipio_t info;
        int ret;
        int cfg, cfg_base;
        int reg, revision;
        int i = 0;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);

        ret = platform_driver_register(&ali_ircc_driver);
        if (ret) {
                IRDA_ERROR("%s, Can't register driver!\n",
                           ALI_IRCC_DRIVER_NAME);
                return ret;
        }

        ret = -ENODEV;
        
        /* Probe for all the ALi chipsets we know about */
        for (chip= chips; chip->name; chip++, i++) 
        {
                IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name);
                                
                /* Try all config registers for this chip */
                for (cfg=0; cfg<2; cfg++)
                {
                        cfg_base = chip->cfg[cfg];
                        if (!cfg_base)
                                continue;
                                
                        memset(&info, 0, sizeof(chipio_t));
                        info.cfg_base = cfg_base;
                        info.fir_base = io[i];
                        info.dma = dma[i];
                        info.irq = irq[i];
                        
                        
                        /* Enter Configuration */
                        outb(chip->entr1, cfg_base);
                        outb(chip->entr2, cfg_base);
                        
                        /* Select Logical Device 5 Registers (UART2) */
                        outb(0x07, cfg_base);
                        outb(0x05, cfg_base+1);
                        
                        /* Read Chip Identification Register */
                        outb(chip->cid_index, cfg_base);        
                        reg = inb(cfg_base+1);  
                                
                        if (reg == chip->cid_value)
                        {
                                IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base);
                                           
                                outb(0x1F, cfg_base);
                                revision = inb(cfg_base+1);
                                IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__,
                                           chip->name, revision);                                       
                                
                                /* 
                                 * If the user supplies the base address, then
                                 * we init the chip, if not we probe the values
                                 * set by the BIOS
                                 */                             
                                if (io[i] < 2000)
                                {
                                        chip->init(chip, &info);
                                }
                                else
                                {
                                        chip->probe(chip, &info);       
                                }
                                
                                if (ali_ircc_open(i, &info) == 0)
                                        ret = 0;
                                i++;                            
                        }
                        else
                        {
                                IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base);
                        }
                        /* Exit configuration */
                        outb(0xbb, cfg_base);
                }
        }               
                
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);

        if (ret)
                platform_driver_unregister(&ali_ircc_driver);

        return ret;
}

/*
 * Function ali_ircc_cleanup ()
 *
 *    Close all configured chips
 *
 */
static void __exit ali_ircc_cleanup(void)
{
        int i;

        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);

        for (i=0; i < ARRAY_SIZE(dev_self); i++) {
                if (dev_self[i])
                        ali_ircc_close(dev_self[i]);
        }
        
        platform_driver_unregister(&ali_ircc_driver);

        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
}

static const struct net_device_ops ali_ircc_sir_ops = {
        .ndo_open       = ali_ircc_net_open,
        .ndo_stop       = ali_ircc_net_close,
        .ndo_start_xmit = ali_ircc_sir_hard_xmit,
        .ndo_do_ioctl   = ali_ircc_net_ioctl,
};

static const struct net_device_ops ali_ircc_fir_ops = {
        .ndo_open       = ali_ircc_net_open,
        .ndo_stop       = ali_ircc_net_close,
        .ndo_start_xmit = ali_ircc_fir_hard_xmit,
        .ndo_do_ioctl   = ali_ircc_net_ioctl,
};

/*
 * Function ali_ircc_open (int i, chipio_t *inf)
 *
 *    Open driver instance
 *
 */
static int ali_ircc_open(int i, chipio_t *info)
{
        struct net_device *dev;
        struct ali_ircc_cb *self;
        int dongle_id;
        int err;
                        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);

        if (i >= ARRAY_SIZE(dev_self)) {
                IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
                           __func__);
                return -ENOMEM;
        }
        
        /* Set FIR FIFO and DMA Threshold */
        if ((ali_ircc_setup(info)) == -1)
                return -1;
                
        dev = alloc_irdadev(sizeof(*self));
        if (dev == NULL) {
                IRDA_ERROR("%s(), can't allocate memory for control block!\n",
                           __func__);
                return -ENOMEM;
        }

        self = netdev_priv(dev);
        self->netdev = dev;
        spin_lock_init(&self->lock);
   
        /* Need to store self somewhere */
        dev_self[i] = self;
        self->index = i;

        /* Initialize IO */
        self->io.cfg_base  = info->cfg_base;    /* In ali_ircc_probe_53 assign          */
        self->io.fir_base  = info->fir_base;    /* info->sir_base = info->fir_base      */
        self->io.sir_base  = info->sir_base;    /* ALi SIR and FIR use the same address */
        self->io.irq       = info->irq;
        self->io.fir_ext   = CHIP_IO_EXTENT;
        self->io.dma       = info->dma;
        self->io.fifo_size = 16;                /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
        
        /* Reserve the ioports that we need */
        if (!request_region(self->io.fir_base, self->io.fir_ext,
                            ALI_IRCC_DRIVER_NAME)) {
                IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__,
                        self->io.fir_base);
                err = -ENODEV;
                goto err_out1;
        }

        /* Initialize QoS for this device */
        irda_init_max_qos_capabilies(&self->qos);
        
        /* The only value we must override it the baudrate */
        self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
                IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
                        
        self->qos.min_turn_time.bits = qos_mtt_bits;
                        
        irda_qos_bits_to_value(&self->qos);
        
        /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
        self->rx_buff.truesize = 14384; 
        self->tx_buff.truesize = 14384;

        /* Allocate memory if needed */
        self->rx_buff.head =
                dma_alloc_coherent(NULL, self->rx_buff.truesize,
                                   &self->rx_buff_dma, GFP_KERNEL);
        if (self->rx_buff.head == NULL) {
                err = -ENOMEM;
                goto err_out2;
        }
        memset(self->rx_buff.head, 0, self->rx_buff.truesize);
        
        self->tx_buff.head =
                dma_alloc_coherent(NULL, self->tx_buff.truesize,
                                   &self->tx_buff_dma, GFP_KERNEL);
        if (self->tx_buff.head == NULL) {
                err = -ENOMEM;
                goto err_out3;
        }
        memset(self->tx_buff.head, 0, self->tx_buff.truesize);

        self->rx_buff.in_frame = FALSE;
        self->rx_buff.state = OUTSIDE_FRAME;
        self->tx_buff.data = self->tx_buff.head;
        self->rx_buff.data = self->rx_buff.head;
        
        /* Reset Tx queue info */
        self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
        self->tx_fifo.tail = self->tx_buff.head;

        /* Override the network functions we need to use */
        dev->netdev_ops = &ali_ircc_sir_ops;

        err = register_netdev(dev);
        if (err) {
                IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
                goto err_out4;
        }
        IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);

        /* Check dongle id */
        dongle_id = ali_ircc_read_dongle_id(i, info);
        IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__,
                     ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
                
        self->io.dongle_id = dongle_id;

        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
        
        return 0;

 err_out4:
        dma_free_coherent(NULL, self->tx_buff.truesize,
                          self->tx_buff.head, self->tx_buff_dma);
 err_out3:
        dma_free_coherent(NULL, self->rx_buff.truesize,
                          self->rx_buff.head, self->rx_buff_dma);
 err_out2:
        release_region(self->io.fir_base, self->io.fir_ext);
 err_out1:
        dev_self[i] = NULL;
        free_netdev(dev);
        return err;
}


/*
 * Function ali_ircc_close (self)
 *
 *    Close driver instance
 *
 */
static int __exit ali_ircc_close(struct ali_ircc_cb *self)
{
        int iobase;

        IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__);

        IRDA_ASSERT(self != NULL, return -1;);

        iobase = self->io.fir_base;

        /* Remove netdevice */
        unregister_netdev(self->netdev);

        /* Release the PORT that this driver is using */
        IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base);
        release_region(self->io.fir_base, self->io.fir_ext);

        if (self->tx_buff.head)
                dma_free_coherent(NULL, self->tx_buff.truesize,
                                  self->tx_buff.head, self->tx_buff_dma);
        
        if (self->rx_buff.head)
                dma_free_coherent(NULL, self->rx_buff.truesize,
                                  self->rx_buff.head, self->rx_buff_dma);

        dev_self[self->index] = NULL;
        free_netdev(self->netdev);
        
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
        
        return 0;
}

/*
 * Function ali_ircc_init_43 (chip, info)
 *
 *    Initialize the ALi M1543 chip. 
 */
static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) 
{
        /* All controller information like I/O address, DMA channel, IRQ
         * are set by BIOS
         */
        
        return 0;
}

/*
 * Function ali_ircc_init_53 (chip, info)
 *
 *    Initialize the ALi M1535 chip. 
 */
static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) 
{
        /* All controller information like I/O address, DMA channel, IRQ
         * are set by BIOS
         */
        
        return 0;
}

/*
 * Function ali_ircc_probe_53 (chip, info)
 *      
 *      Probes for the ALi M1535D or M1535
 */
static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
{
        int cfg_base = info->cfg_base;
        int hi, low, reg;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
        
        /* Enter Configuration */
        outb(chip->entr1, cfg_base);
        outb(chip->entr2, cfg_base);
        
        /* Select Logical Device 5 Registers (UART2) */
        outb(0x07, cfg_base);
        outb(0x05, cfg_base+1);
        
        /* Read address control register */
        outb(0x60, cfg_base);
        hi = inb(cfg_base+1);   
        outb(0x61, cfg_base);
        low = inb(cfg_base+1);
        info->fir_base = (hi<<8) + low;
        
        info->sir_base = info->fir_base;
        
        IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
                
        /* Read IRQ control register */
        outb(0x70, cfg_base);
        reg = inb(cfg_base+1);
        info->irq = reg & 0x0f;
        IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq);
        
        /* Read DMA channel */
        outb(0x74, cfg_base);
        reg = inb(cfg_base+1);
        info->dma = reg & 0x07;
        
        if(info->dma == 0x04)
                IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__);
        else
                IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma);
        
        /* Read Enabled Status */
        outb(0x30, cfg_base);
        reg = inb(cfg_base+1);
        info->enabled = (reg & 0x80) && (reg & 0x01);
        IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled);
        
        /* Read Power Status */
        outb(0x22, cfg_base);
        reg = inb(cfg_base+1);
        info->suspended = (reg & 0x20);
        IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended);
        
        /* Exit configuration */
        outb(0xbb, cfg_base);
                
        IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
        
        return 0;       
}

/*
 * Function ali_ircc_setup (info)
 *
 *      Set FIR FIFO and DMA Threshold
 *      Returns non-negative on success.
 *
 */
static int ali_ircc_setup(chipio_t *info)
{
        unsigned char tmp;
        int version;
        int iobase = info->fir_base;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
        
        /* Locking comments :
         * Most operations here need to be protected. We are called before
         * the device instance is created in ali_ircc_open(), therefore 
         * nobody can bother us - Jean II */

        /* Switch to FIR space */
        SIR2FIR(iobase);
        
        /* Master Reset */
        outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
        
        /* Read FIR ID Version Register */
        switch_bank(iobase, BANK3);
        version = inb(iobase+FIR_ID_VR);
        
        /* Should be 0x00 in the M1535/M1535D */
        if(version != 0x00)
        {
                IRDA_ERROR("%s, Wrong chip version %02x\n",
                           ALI_IRCC_DRIVER_NAME, version);
                return -1;
        }
        
        /* Set FIR FIFO Threshold Register */
        switch_bank(iobase, BANK1);
        outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
        
        /* Set FIR DMA Threshold Register */
        outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
        
        /* CRC enable */
        switch_bank(iobase, BANK2);
        outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
        
        /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
        
        /* Switch to Bank 0 */
        switch_bank(iobase, BANK0);
        
        tmp = inb(iobase+FIR_LCR_B);
        tmp &=~0x20; // disable SIP
        tmp |= 0x80; // these two steps make RX mode
        tmp &= 0xbf;    
        outb(tmp, iobase+FIR_LCR_B);
                
        /* Disable Interrupt */
        outb(0x00, iobase+FIR_IER);
        
        
        /* Switch to SIR space */
        FIR2SIR(iobase);
        
        IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
                     ALI_IRCC_DRIVER_NAME);
        
        /* Enable receive interrupts */ 
        // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
        // Turn on the interrupts in ali_ircc_net_open
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
        
        return 0;
}

/*
 * Function ali_ircc_read_dongle_id (int index, info)
 *
 * Try to read dongle indentification. This procedure needs to be executed
 * once after power-on/reset. It also needs to be used whenever you suspect
 * that the user may have plugged/unplugged the IrDA Dongle.
 */
static int ali_ircc_read_dongle_id (int i, chipio_t *info)
{
        int dongle_id, reg;
        int cfg_base = info->cfg_base;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
                
        /* Enter Configuration */
        outb(chips[i].entr1, cfg_base);
        outb(chips[i].entr2, cfg_base);
        
        /* Select Logical Device 5 Registers (UART2) */
        outb(0x07, cfg_base);
        outb(0x05, cfg_base+1);
        
        /* Read Dongle ID */
        outb(0xf0, cfg_base);
        reg = inb(cfg_base+1);  
        dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
        IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__,
                dongle_id, dongle_types[dongle_id]);
        
        /* Exit configuration */
        outb(0xbb, cfg_base);
                        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
        
        return dongle_id;
}

/*
 * Function ali_ircc_interrupt (irq, dev_id, regs)
 *
 *    An interrupt from the chip has arrived. Time to do some work
 *
 */
static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
{
        struct net_device *dev = dev_id;
        struct ali_ircc_cb *self;
        int ret;
                
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
                
        self = netdev_priv(dev);
        
        spin_lock(&self->lock);
        
        /* Dispatch interrupt handler for the current speed */
        if (self->io.speed > 115200)
                ret = ali_ircc_fir_interrupt(self);
        else
                ret = ali_ircc_sir_interrupt(self);
                
        spin_unlock(&self->lock);
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
        return ret;
}
/*
 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
 *
 *    Handle MIR/FIR interrupt
 *
 */
static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
{
        __u8 eir, OldMessageCount;
        int iobase, tmp;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__);
        
        iobase = self->io.fir_base;
        
        switch_bank(iobase, BANK0);     
        self->InterruptID = inb(iobase+FIR_IIR);                
        self->BusStatus = inb(iobase+FIR_BSR);  
        
        OldMessageCount = (self->LineStatus + 1) & 0x07;
        self->LineStatus = inb(iobase+FIR_LSR); 
        //self->ier = inb(iobase+FIR_IER);              2000/12/1 04:32PM
        eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ 
        
        IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID);
        IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus);
        IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier);
        IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir);
        
        /* Disable interrupts */
         SetCOMInterrupts(self, FALSE);
        
        /* Tx or Rx Interrupt */
        
        if (eir & IIR_EOM) 
        {               
                if (self->io.direction == IO_XMIT) /* TX */
                {
                        IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__);
                        
                        if(ali_ircc_dma_xmit_complete(self))
                        {
                                if (irda_device_txqueue_empty(self->netdev)) 
                                {
                                        /* Prepare for receive */
                                        ali_ircc_dma_receive(self);                                     
                                        self->ier = IER_EOM;                                                                    
                                }
                        }
                        else
                        {
                                self->ier = IER_EOM;                                    
                        }
                                                                        
                }       
                else /* RX */
                {
                        IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__);
                        
                        if(OldMessageCount > ((self->LineStatus+1) & 0x07))
                        {
                                self->rcvFramesOverflow = TRUE; 
                                IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __func__);
                        }
                                                
                        if (ali_ircc_dma_receive_complete(self))
                        {
                                IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __func__);
                                
                                self->ier = IER_EOM;                            
                        }
                        else
                        {
                                IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __func__);
                                
                                self->ier = IER_EOM | IER_TIMER;                                                                
                        }       
                
                }               
        }
        /* Timer Interrupt */
        else if (eir & IIR_TIMER)
        {       
                if(OldMessageCount > ((self->LineStatus+1) & 0x07))
                {
                        self->rcvFramesOverflow = TRUE; 
                        IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __func__);
                }
                /* Disable Timer */
                switch_bank(iobase, BANK1);
                tmp = inb(iobase+FIR_CR);
                outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
                
                /* Check if this is a Tx timer interrupt */
                if (self->io.direction == IO_XMIT)
                {
                        ali_ircc_dma_xmit(self);
                        
                        /* Interrupt on EOM */
                        self->ier = IER_EOM;
                                                                        
                }
                else /* Rx */
                {
                        if(ali_ircc_dma_receive_complete(self)) 
                        {
                                self->ier = IER_EOM;
                        }
                        else
                        {
                                self->ier = IER_EOM | IER_TIMER;
                        }       
                }               
        }
        
        /* Restore Interrupt */ 
        SetCOMInterrupts(self, TRUE);   
                
        IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__);
        return IRQ_RETVAL(eir);
}

/*
 * Function ali_ircc_sir_interrupt (irq, self, eir)
 *
 *    Handle SIR interrupt
 *
 */
static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
{
        int iobase;
        int iir, lsr;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
        
        iobase = self->io.sir_base;

        iir = inb(iobase+UART_IIR) & UART_IIR_ID;
        if (iir) {      
                /* Clear interrupt */
                lsr = inb(iobase+UART_LSR);

                IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__,
                           iir, lsr, iobase);

                switch (iir) 
                {
                        case UART_IIR_RLSI:
                                IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
                                break;
                        case UART_IIR_RDI:
                                /* Receive interrupt */
                                ali_ircc_sir_receive(self);
                                break;
                        case UART_IIR_THRI:
                                if (lsr & UART_LSR_THRE)
                                {
                                        /* Transmitter ready for data */
                                        ali_ircc_sir_write_wakeup(self);                                
                                }                               
                                break;
                        default:
                                IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir);
                                break;
                } 
                
        }
        
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);

        return IRQ_RETVAL(iir);
}


/*
 * Function ali_ircc_sir_receive (self)
 *
 *    Receive one frame from the infrared port
 *
 */
static void ali_ircc_sir_receive(struct ali_ircc_cb *self) 
{
        int boguscount = 0;
        int iobase;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
        IRDA_ASSERT(self != NULL, return;);

        iobase = self->io.sir_base;

        /*  
         * Receive all characters in Rx FIFO, unwrap and unstuff them. 
         * async_unwrap_char will deliver all found frames  
         */
        do {
                async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
                                  inb(iobase+UART_RX));

                /* Make sure we don't stay here too long */
                if (boguscount++ > 32) {
                        IRDA_DEBUG(2,"%s(), breaking!\n", __func__);
                        break;
                }
        } while (inb(iobase+UART_LSR) & UART_LSR_DR);   
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
}

/*
 * Function ali_ircc_sir_write_wakeup (tty)
 *
 *    Called by the driver when there's room for more data.  If we have
 *    more packets to send, we send them here.
 *
 */
static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
{
        int actual = 0;
        int iobase;     

        IRDA_ASSERT(self != NULL, return;);

        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
        
        iobase = self->io.sir_base;

        /* Finished with frame?  */
        if (self->tx_buff.len > 0)  
        {
                /* Write data left in transmit buffer */
                actual = ali_ircc_sir_write(iobase, self->io.fifo_size, 
                                      self->tx_buff.data, self->tx_buff.len);
                self->tx_buff.data += actual;
                self->tx_buff.len  -= actual;
        } 
        else 
        {
                if (self->new_speed) 
                {
                        /* We must wait until all data are gone */
                        while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
                                IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ );
                        
                        IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed);
                        ali_ircc_change_speed(self, self->new_speed);
                        self->new_speed = 0;                    
                        
                        // benjamin 2000/11/10 06:32PM
                        if (self->io.speed > 115200)
                        {
                                IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __func__ );
                                        
                                self->ier = IER_EOM;
                                // SetCOMInterrupts(self, TRUE);                                                        
                                return;                                                 
                        }
                }
                else
                {
                        netif_wake_queue(self->netdev); 
                }
                        
                self->netdev->stats.tx_packets++;
                
                /* Turn on receive interrupts */
                outb(UART_IER_RDI, iobase+UART_IER);
        }
                
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
}

static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
{
        struct net_device *dev = self->netdev;
        int iobase;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
        
        IRDA_DEBUG(2, "%s(), setting speed = %d \n", __func__ , baud);
        
        /* This function *must* be called with irq off and spin-lock.
         * - Jean II */

        iobase = self->io.fir_base;
        
        SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
        
        /* Go to MIR, FIR Speed */
        if (baud > 115200)
        {
                
                                        
                ali_ircc_fir_change_speed(self, baud);                  
                
                /* Install FIR xmit handler*/
                dev->netdev_ops = &ali_ircc_fir_ops;
                                
                /* Enable Interuupt */
                self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM                                     
                                
                /* Be ready for incomming frames */
                ali_ircc_dma_receive(self);     // benajmin 2000/11/8 07:46PM not complete
        }       
        /* Go to SIR Speed */
        else
        {

                ali_ircc_sir_change_speed(self, baud);
                                
                /* Install SIR xmit handler*/
                dev->netdev_ops = &ali_ircc_sir_ops;
        }
        
                
        SetCOMInterrupts(self, TRUE);   // 2000/11/24 11:43AM
                
        netif_wake_queue(self->netdev); 
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
}

static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
{
                
        int iobase; 
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
        struct net_device *dev;

        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
                
        IRDA_ASSERT(self != NULL, return;);

        dev = self->netdev;
        iobase = self->io.fir_base;
        
        IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud);
        
        /* Come from SIR speed */
        if(self->io.speed <=115200)
        {
                SIR2FIR(iobase);
        }
                
        /* Update accounting for new speed */
        self->io.speed = baud;
                
        // Set Dongle Speed mode
        ali_ircc_change_dongle_speed(self, baud);
                
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

/*
 * Function ali_sir_change_speed (self, speed)
 *
 *    Set speed of IrDA port to specified baudrate
 *
 */
static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
{
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
        unsigned long flags;
        int iobase; 
        int fcr;    /* FIFO control reg */
        int lcr;    /* Line control reg */
        int divisor;

        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
        
        IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed);

        IRDA_ASSERT(self != NULL, return;);

        iobase = self->io.sir_base;
        
        /* Come from MIR or FIR speed */
        if(self->io.speed >115200)
        {       
                // Set Dongle Speed mode first
                ali_ircc_change_dongle_speed(self, speed);
                        
                FIR2SIR(iobase);
        }
                
        // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
                
        inb(iobase+UART_LSR);
        inb(iobase+UART_SCR);
                
        /* Update accounting for new speed */
        self->io.speed = speed;

        spin_lock_irqsave(&self->lock, flags);

        divisor = 115200/speed;
        
        fcr = UART_FCR_ENABLE_FIFO;

        /* 
         * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
         * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
         * about this timeout since it will always be fast enough. 
         */
        if (self->io.speed < 38400)
                fcr |= UART_FCR_TRIGGER_1;
        else 
                fcr |= UART_FCR_TRIGGER_14;
        
        /* IrDA ports use 8N1 */
        lcr = UART_LCR_WLEN8;
        
        outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
        outb(divisor & 0xff,      iobase+UART_DLL); /* Set speed */
        outb(divisor >> 8,        iobase+UART_DLM);
        outb(lcr,                 iobase+UART_LCR); /* Set 8N1  */
        outb(fcr,                 iobase+UART_FCR); /* Enable FIFO's */

        /* without this, the conection will be broken after come back from FIR speed,
           but with this, the SIR connection is harder to established */
        outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
        
        spin_unlock_irqrestore(&self->lock, flags);
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
{
        
        struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
        int iobase,dongle_id;
        int tmp = 0;
                        
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
        
        iobase = self->io.fir_base;     /* or iobase = self->io.sir_base; */
        dongle_id = self->io.dongle_id;
        
        /* We are already locked, no need to do it again */
                
        IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed);
        
        switch_bank(iobase, BANK2);
        tmp = inb(iobase+FIR_IRDA_CR);
                
        /* IBM type dongle */
        if(dongle_id == 0)
        {                               
                if(speed == 4000000)
                {
                        //            __ __     
                        // SD/MODE __|     |__ __
                        //               __ __ 
                        // IRTX    __ __|     |__
                        //         T1 T2 T3 T4 T5
                        
                        tmp &=  ~IRDA_CR_HDLC;          // HDLC=0
                        tmp |= IRDA_CR_CRC;             // CRC=1
                        
                        switch_bank(iobase, BANK2);
                        outb(tmp, iobase+FIR_IRDA_CR);
                        
                        // T1 -> SD/MODE:0 IRTX:0
                        tmp &= ~0x09;
                        tmp |= 0x02;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // T2 -> SD/MODE:1 IRTX:0
                        tmp &= ~0x01;
                        tmp |= 0x0a;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // T3 -> SD/MODE:1 IRTX:1
                        tmp |= 0x0b;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // T4 -> SD/MODE:0 IRTX:1
                        tmp &= ~0x08;
                        tmp |= 0x03;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // T5 -> SD/MODE:0 IRTX:0
                        tmp &= ~0x09;
                        tmp |= 0x02;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // reset -> Normal TX output Signal
                        outb(tmp & ~0x02, iobase+FIR_IRDA_CR);                          
                }
                else /* speed <=1152000 */
                {       
                        //            __        
                        // SD/MODE __|  |__
                        //
                        // IRTX    ________
                        //         T1 T2 T3  
                        
                        /* MIR 115200, 57600 */
                        if (speed==1152000)
                        {
                                tmp |= 0xA0;       //HDLC=1, 1.152Mbps=1
                        }
                        else
                        {
                                tmp &=~0x80;       //HDLC 0.576Mbps
                                tmp |= 0x20;       //HDLC=1,
                        }                       
                        
                        tmp |= IRDA_CR_CRC;             // CRC=1
                        
                        switch_bank(iobase, BANK2);
                        outb(tmp, iobase+FIR_IRDA_CR);
                                                
                        /* MIR 115200, 57600 */ 
                                                
                        //switch_bank(iobase, BANK2);                   
                        // T1 -> SD/MODE:0 IRTX:0
                        tmp &= ~0x09;
                        tmp |= 0x02;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // T2 -> SD/MODE:1 IRTX:0
                        tmp &= ~0x01;     
                        tmp |= 0x0a;      
                        outb(tmp, iobase+FIR_IRDA_CR);
                        
                        // T3 -> SD/MODE:0 IRTX:0
                        tmp &= ~0x09;
                        tmp |= 0x02;
                        outb(tmp, iobase+FIR_IRDA_CR);
                        udelay(2);
                        
                        // reset -> Normal TX output Signal
                        outb(tmp & ~0x02, iobase+FIR_IRDA_CR);                                                  
                }               
        }
        else if (dongle_id == 1) /* HP HDSL-3600 */
        {
                switch(speed)
                {
                case 4000000:
                        tmp &=  ~IRDA_CR_HDLC;  // HDLC=0
                        break;  
                        
                case 1152000:
                        tmp |= 0xA0;            // HDLC=1, 1.152Mbps=1
                        break;
                        
                case 576000:
                        tmp &=~0x80;            // HDLC 0.576Mbps
                        tmp |= 0x20;            // HDLC=1,
                        break;
                }                       
                        
                tmp |= IRDA_CR_CRC;             // CRC=1
                        
                switch_bank(iobase, BANK2);
                outb(tmp, iobase+FIR_IRDA_CR);          
        }
        else /* HP HDSL-1100 */
        {
                if(speed <= 115200) /* SIR */
                {
                        
                        tmp &= ~IRDA_CR_FIR_SIN;        // HP sin select = 0
                        
                        switch_bank(iobase, BANK2);
                        outb(tmp, iobase+FIR_IRDA_CR);                  
                }
                else /* MIR FIR */
                {       
                        
                        switch(speed)
                        {
                        case 4000000:
                                tmp &=  ~IRDA_CR_HDLC;  // HDLC=0
                                break;  
                        
                        case 1152000:
                                tmp |= 0xA0;            // HDLC=1, 1.152Mbps=1
                                break;
                        
                        case 576000:
                                tmp &=~0x80;            // HDLC 0.576Mbps
                                tmp |= 0x20;            // HDLC=1,
                                break;
                        }                       
                        
                        tmp |= IRDA_CR_CRC;             // CRC=1
                        tmp |= IRDA_CR_FIR_SIN;         // HP sin select = 1
                        
                        switch_bank(iobase, BANK2);
                        outb(tmp, iobase+FIR_IRDA_CR);                  
                }
        }
                        
        switch_bank(iobase, BANK0);
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

/*
 * Function ali_ircc_sir_write (driver)
 *
 *    Fill Tx FIFO with transmit data
 *
 */
static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
{
        int actual = 0;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
                
        /* Tx FIFO should be empty! */
        if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
                IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ );
                return 0;
        }
        
        /* Fill FIFO with current frame */
        while ((fifo_size-- > 0) && (actual < len)) {
                /* Transmit next byte */
                outb(buf[actual], iobase+UART_TX);

                actual++;
        }
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        return actual;
}

/*
 * Function ali_ircc_net_open (dev)
 *
 *    Start the device
 *
 */
static int ali_ircc_net_open(struct net_device *dev)
{
        struct ali_ircc_cb *self;
        int iobase;
        char hwname[32];
                
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
        
        IRDA_ASSERT(dev != NULL, return -1;);
        
        self = netdev_priv(dev);
        
        IRDA_ASSERT(self != NULL, return 0;);
        
        iobase = self->io.fir_base;
        
        /* Request IRQ and install Interrupt Handler */
        if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) 
        {
                IRDA_WARNING("%s, unable to allocate irq=%d\n",
                             ALI_IRCC_DRIVER_NAME,
                             self->io.irq);
                return -EAGAIN;
        }
        
        /*
         * Always allocate the DMA channel after the IRQ, and clean up on 
         * failure.
         */
        if (request_dma(self->io.dma, dev->name)) {
                IRDA_WARNING("%s, unable to allocate dma=%d\n",
                             ALI_IRCC_DRIVER_NAME,
                             self->io.dma);
                free_irq(self->io.irq, self);
                return -EAGAIN;
        }
        
        /* Turn on interrups */
        outb(UART_IER_RDI , iobase+UART_IER);

        /* Ready to play! */
        netif_start_queue(dev); //benjamin by irport
        
        /* Give self a hardware name */
        sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);

        /* 
         * Open new IrLAP layer instance, now that everything should be
         * initialized properly 
         */
        self->irlap = irlap_open(dev, &self->qos, hwname);
                
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        
        return 0;
}

/*
 * Function ali_ircc_net_close (dev)
 *
 *    Stop the device
 *
 */
static int ali_ircc_net_close(struct net_device *dev)
{       

        struct ali_ircc_cb *self;
        //int iobase;
                        
        IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ );
                
        IRDA_ASSERT(dev != NULL, return -1;);

        self = netdev_priv(dev);
        IRDA_ASSERT(self != NULL, return 0;);

        /* Stop device */
        netif_stop_queue(dev);
        
        /* Stop and remove instance of IrLAP */
        if (self->irlap)
                irlap_close(self->irlap);
        self->irlap = NULL;
                
        disable_dma(self->io.dma);

        /* Disable interrupts */
        SetCOMInterrupts(self, FALSE);
               
        free_irq(self->io.irq, dev);
        free_dma(self->io.dma);

        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        
        return 0;
}

/*
 * Function ali_ircc_fir_hard_xmit (skb, dev)
 *
 *    Transmit the frame
 *
 */
static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
                                                struct net_device *dev)
{
        struct ali_ircc_cb *self;
        unsigned long flags;
        int iobase;
        __u32 speed;
        int mtt, diff;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
        
        self = netdev_priv(dev);
        iobase = self->io.fir_base;

        netif_stop_queue(dev);
        
        /* Make sure tests *& speed change are atomic */
        spin_lock_irqsave(&self->lock, flags);
        
        /* Note : you should make sure that speed changes are not going
         * to corrupt any outgoing frame. Look at nsc-ircc for the gory
         * details - Jean II */

        /* Check if we need to change the speed */
        speed = irda_get_next_speed(skb);
        if ((speed != self->io.speed) && (speed != -1)) {
                /* Check for empty frame */
                if (!skb->len) {
                        ali_ircc_change_speed(self, speed); 
                        dev->trans_start = jiffies;
                        spin_unlock_irqrestore(&self->lock, flags);
                        dev_kfree_skb(skb);
                        return NETDEV_TX_OK;
                } else
                        self->new_speed = speed;
        }

        /* Register and copy this frame to DMA memory */
        self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
        self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
        self->tx_fifo.tail += skb->len;

        dev->stats.tx_bytes += skb->len;

        skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
                      skb->len);
        self->tx_fifo.len++;
        self->tx_fifo.free++;

        /* Start transmit only if there is currently no transmit going on */
        if (self->tx_fifo.len == 1) 
        {
                /* Check if we must wait the min turn time or not */
                mtt = irda_get_mtt(skb);
                                
                if (mtt) 
                {
                        /* Check how much time we have used already */
                        do_gettimeofday(&self->now);
                        
                        diff = self->now.tv_usec - self->stamp.tv_usec;
                        /* self->stamp is set from ali_ircc_dma_receive_complete() */
                                                        
                        IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __func__ , diff);
                        
                        if (diff < 0) 
                                diff += 1000000;
                        
                        /* Check if the mtt is larger than the time we have
                         * already used by all the protocol processing
                         */
                        if (mtt > diff)
                        {                               
                                mtt -= diff;
                                                                
                                /* 
                                 * Use timer if delay larger than 1000 us, and
                                 * use udelay for smaller values which should
                                 * be acceptable
                                 */
                                if (mtt > 500) 
                                {
                                        /* Adjust for timer resolution */
                                        mtt = (mtt+250) / 500;  /* 4 discard, 5 get advanced, Let's round off */
                                        
                                        IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt);
                                        
                                        /* Setup timer */
                                        if (mtt == 1) /* 500 us */
                                        {
                                                switch_bank(iobase, BANK1);
                                                outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
                                        }       
                                        else if (mtt == 2) /* 1 ms */
                                        {
                                                switch_bank(iobase, BANK1);
                                                outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
                                        }                                       
                                        else /* > 2ms -> 4ms */
                                        {
                                                switch_bank(iobase, BANK1);
                                                outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
                                        }
                                        
                                        
                                        /* Start timer */
                                        outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
                                        self->io.direction = IO_XMIT;
                                        
                                        /* Enable timer interrupt */
                                        self->ier = IER_TIMER;
                                        SetCOMInterrupts(self, TRUE);                                   
                                        
                                        /* Timer will take care of the rest */
                                        goto out; 
                                } 
                                else
                                        udelay(mtt);
                        } // if (if (mtt > diff)
                }// if (mtt) 
                                
                /* Enable EOM interrupt */
                self->ier = IER_EOM;
                SetCOMInterrupts(self, TRUE);
                
                /* Transmit frame */
                ali_ircc_dma_xmit(self);
        } // if (self->tx_fifo.len == 1) 
        
 out:
        
        /* Not busy transmitting anymore if window is not full */
        if (self->tx_fifo.free < MAX_TX_WINDOW)
                netif_wake_queue(self->netdev);
        
        /* Restore bank register */
        switch_bank(iobase, BANK0);

        dev->trans_start = jiffies;
        spin_unlock_irqrestore(&self->lock, flags);
        dev_kfree_skb(skb);

        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
        return NETDEV_TX_OK;    
}


static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
{
        int iobase, tmp;
        unsigned char FIFO_OPTI, Hi, Lo;
        
        
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
        
        iobase = self->io.fir_base;
        
        /* FIFO threshold , this method comes from NDIS5 code */
        
        if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
                FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
        else
                FIFO_OPTI = TX_FIFO_Threshold;
        
        /* Disable DMA */
        switch_bank(iobase, BANK1);
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
        
        self->io.direction = IO_XMIT;
        
        irda_setup_dma(self->io.dma, 
                       ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
                        self->tx_buff.head) + self->tx_buff_dma,
                       self->tx_fifo.queue[self->tx_fifo.ptr].len, 
                       DMA_TX_MODE);
                
        /* Reset Tx FIFO */
        switch_bank(iobase, BANK0);
        outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
        
        /* Set Tx FIFO threshold */
        if (self->fifo_opti_buf!=FIFO_OPTI) 
        {
                switch_bank(iobase, BANK1);
                outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
                self->fifo_opti_buf=FIFO_OPTI;
        }
        
        /* Set Tx DMA threshold */
        switch_bank(iobase, BANK1);
        outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
        
        /* Set max Tx frame size */
        Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
        Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
        switch_bank(iobase, BANK2);
        outb(Hi, iobase+FIR_TX_DSR_HI);
        outb(Lo, iobase+FIR_TX_DSR_LO);
        
        /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
        switch_bank(iobase, BANK0);     
        tmp = inb(iobase+FIR_LCR_B);
        tmp &= ~0x20; // Disable SIP
        outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
        IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __func__ , inb(iobase+FIR_LCR_B));
        
        outb(0, iobase+FIR_LSR);
                        
        /* Enable DMA and Burst Mode */
        switch_bank(iobase, BANK1);
        outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
        
        switch_bank(iobase, BANK0); 
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

static int  ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
{
        int iobase;
        int ret = TRUE;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
        
        iobase = self->io.fir_base;
        
        /* Disable DMA */
        switch_bank(iobase, BANK1);
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
        
        /* Check for underrun! */
        switch_bank(iobase, BANK0);
        if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
        
        {
                IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__);
                self->netdev->stats.tx_errors++;
                self->netdev->stats.tx_fifo_errors++;
        }
        else 
        {
                self->netdev->stats.tx_packets++;
        }

        /* Check if we need to change the speed */
        if (self->new_speed) 
        {
                ali_ircc_change_speed(self, self->new_speed);
                self->new_speed = 0;
        }

        /* Finished with this frame, so prepare for next */
        self->tx_fifo.ptr++;
        self->tx_fifo.len--;

        /* Any frames to be sent back-to-back? */
        if (self->tx_fifo.len) 
        {
                ali_ircc_dma_xmit(self);
                
                /* Not finished yet! */
                ret = FALSE;
        } 
        else 
        {       /* Reset Tx FIFO info */
                self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
                self->tx_fifo.tail = self->tx_buff.head;
        }

        /* Make sure we have room for more frames */
        if (self->tx_fifo.free < MAX_TX_WINDOW) {
                /* Not busy transmitting anymore */
                /* Tell the network layer, that we can accept more frames */
                netif_wake_queue(self->netdev);
        }
                
        switch_bank(iobase, BANK0); 
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
        return ret;
}

/*
 * Function ali_ircc_dma_receive (self)
 *
 *    Get ready for receiving a frame. The device will initiate a DMA
 *    if it starts to receive a frame.
 *
 */
static int ali_ircc_dma_receive(struct ali_ircc_cb *self) 
{
        int iobase, tmp;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
        
        iobase = self->io.fir_base;
        
        /* Reset Tx FIFO info */
        self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
        self->tx_fifo.tail = self->tx_buff.head;
                
        /* Disable DMA */
        switch_bank(iobase, BANK1);
        outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
        
        /* Reset Message Count */
        switch_bank(iobase, BANK0);
        outb(0x07, iobase+FIR_LSR);
                
        self->rcvFramesOverflow = FALSE;        
        
        self->LineStatus = inb(iobase+FIR_LSR) ;
        
        /* Reset Rx FIFO info */
        self->io.direction = IO_RECV;
        self->rx_buff.data = self->rx_buff.head;
                
        /* Reset Rx FIFO */
        // switch_bank(iobase, BANK0);
        outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 
        
        self->st_fifo.len = self->st_fifo.pending_bytes = 0;
        self->st_fifo.tail = self->st_fifo.head = 0;
                
        irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
                       DMA_RX_MODE);
         
        /* Set Receive Mode,Brick Wall */
        //switch_bank(iobase, BANK0);
        tmp = inb(iobase+FIR_LCR_B);
        outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
        IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __func__ , inb(iobase+FIR_LCR_B));
                        
        /* Set Rx Threshold */
        switch_bank(iobase, BANK1);
        outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
        outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
                
        /* Enable DMA and Burst Mode */
        // switch_bank(iobase, BANK1);
        outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
                                
        switch_bank(iobase, BANK0); 
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
        return 0;
}

static int  ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
{
        struct st_fifo *st_fifo;
        struct sk_buff *skb;
        __u8 status, MessageCount;
        int len, i, iobase, val;        

        IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );

        st_fifo = &self->st_fifo;               
        iobase = self->io.fir_base;     
                
        switch_bank(iobase, BANK0);
        MessageCount = inb(iobase+ FIR_LSR)&0x07;
        
        if (MessageCount > 0)   
                IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __func__ , MessageCount);
                
        for (i=0; i<=MessageCount; i++)
        {
                /* Bank 0 */
                switch_bank(iobase, BANK0);
                status = inb(iobase+FIR_LSR);
                
                switch_bank(iobase, BANK2);
                len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
                len = len << 8; 
                len |= inb(iobase+FIR_RX_DSR_LO);
                
                IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len);
                IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status);
                
                if (st_fifo->tail >= MAX_RX_WINDOW) {
                        IRDA_DEBUG(0, "%s(), window is full!\n", __func__ );
                        continue;
                }
                        
                st_fifo->entries[st_fifo->tail].status = status;
                st_fifo->entries[st_fifo->tail].len = len;
                st_fifo->pending_bytes += len;
                st_fifo->tail++;
                st_fifo->len++;
        }
                        
        for (i=0; i<=MessageCount; i++)
        {       
                /* Get first entry */
                status = st_fifo->entries[st_fifo->head].status;
                len    = st_fifo->entries[st_fifo->head].len;
                st_fifo->pending_bytes -= len;
                st_fifo->head++;
                st_fifo->len--;                 
                
                /* Check for errors */
                if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))             
                {
                        IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __func__ );
                        
                        /* Skip frame */
                        self->netdev->stats.rx_errors++;
                        
                        self->rx_buff.data += len;
                        
                        if (status & LSR_FIFO_UR) 
                        {
                                self->netdev->stats.rx_frame_errors++;
                                IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __func__ );
                        }       
                        if (status & LSR_FRAME_ERROR)
                        {
                                self->netdev->stats.rx_frame_errors++;
                                IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __func__ );
                        }
                                                        
                        if (status & LSR_CRC_ERROR) 
                        {
                                self->netdev->stats.rx_crc_errors++;
                                IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __func__ );
                        }
                        
                        if(self->rcvFramesOverflow)
                        {
                                self->netdev->stats.rx_frame_errors++;
                                IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __func__ );
                        }
                        if(len == 0)
                        {
                                self->netdev->stats.rx_frame_errors++;
                                IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __func__ );
                        }
                }        
                else 
                {
                        
                        if (st_fifo->pending_bytes < 32) 
                        {
                                switch_bank(iobase, BANK0);
                                val = inb(iobase+FIR_BSR);      
                                if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) 
                                {
                                        IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __func__ );
                                        
                                        /* Put this entry back in fifo */
                                        st_fifo->head--;
                                        st_fifo->len++;
                                        st_fifo->pending_bytes += len;
                                        st_fifo->entries[st_fifo->head].status = status;
                                        st_fifo->entries[st_fifo->head].len = len;
                                                
                                        /*  
                                        * DMA not finished yet, so try again 
                                        * later, set timer value, resolution 
                                        * 500 us 
                                        */
                                         
                                        switch_bank(iobase, BANK1);
                                        outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
                                        
                                        /* Enable Timer */
                                        outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
                                                
                                        return FALSE; /* I'll be back! */
                                }
                        }               
                        
                        /* 
                         * Remember the time we received this frame, so we can
                         * reduce the min turn time a bit since we will know
                         * how much time we have used for protocol processing
                         */
                        do_gettimeofday(&self->stamp);

                        skb = dev_alloc_skb(len+1);
                        if (skb == NULL)  
                        {
                                IRDA_WARNING("%s(), memory squeeze, "
                                             "dropping frame.\n",
                                             __func__);
                                self->netdev->stats.rx_dropped++;

                                return FALSE;
                        }
                        
                        /* Make sure IP header gets aligned */
                        skb_reserve(skb, 1); 
                        
                        /* Copy frame without CRC, CRC is removed by hardware*/
                        skb_put(skb, len);
                        skb_copy_to_linear_data(skb, self->rx_buff.data, len);

                        /* Move to next frame */
                        self->rx_buff.data += len;
                        self->netdev->stats.rx_bytes += len;
                        self->netdev->stats.rx_packets++;

                        skb->dev = self->netdev;
                        skb_reset_mac_header(skb);
                        skb->protocol = htons(ETH_P_IRDA);
                        netif_rx(skb);
                }
        }
        
        switch_bank(iobase, BANK0);     
                
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
        return TRUE;
}



/*
 * Function ali_ircc_sir_hard_xmit (skb, dev)
 *
 *    Transmit the frame!
 *
 */
static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
                                                struct net_device *dev)
{
        struct ali_ircc_cb *self;
        unsigned long flags;
        int iobase;
        __u32 speed;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
        
        IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);
        
        self = netdev_priv(dev);
        IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;);

        iobase = self->io.sir_base;

        netif_stop_queue(dev);
        
        /* Make sure tests *& speed change are atomic */
        spin_lock_irqsave(&self->lock, flags);

        /* Note : you should make sure that speed changes are not going
         * to corrupt any outgoing frame. Look at nsc-ircc for the gory
         * details - Jean II */

        /* Check if we need to change the speed */
        speed = irda_get_next_speed(skb);
        if ((speed != self->io.speed) && (speed != -1)) {
                /* Check for empty frame */
                if (!skb->len) {
                        ali_ircc_change_speed(self, speed); 
                        dev->trans_start = jiffies;
                        spin_unlock_irqrestore(&self->lock, flags);
                        dev_kfree_skb(skb);
                        return NETDEV_TX_OK;
                } else
                        self->new_speed = speed;

        }

        /* Init tx buffer */
        self->tx_buff.data = self->tx_buff.head;

        /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
        self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, 
                                           self->tx_buff.truesize);
        
        self->netdev->stats.tx_bytes += self->tx_buff.len;

        /* Turn on transmit finished interrupt. Will fire immediately!  */
        outb(UART_IER_THRI, iobase+UART_IER); 

        dev->trans_start = jiffies;
        spin_unlock_irqrestore(&self->lock, flags);

        dev_kfree_skb(skb);
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        
        return NETDEV_TX_OK;    
}


/*
 * Function ali_ircc_net_ioctl (dev, rq, cmd)
 *
 *    Process IOCTL commands for this device
 *
 */
static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
        struct if_irda_req *irq = (struct if_irda_req *) rq;
        struct ali_ircc_cb *self;
        unsigned long flags;
        int ret = 0;
        
        IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
        
        IRDA_ASSERT(dev != NULL, return -1;);

        self = netdev_priv(dev);

        IRDA_ASSERT(self != NULL, return -1;);

        IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd);
        
        switch (cmd) {
        case SIOCSBANDWIDTH: /* Set bandwidth */
                IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ );
                /*
                 * This function will also be used by IrLAP to change the
                 * speed, so we still must allow for speed change within
                 * interrupt context.
                 */
                if (!in_interrupt() && !capable(CAP_NET_ADMIN))
                        return -EPERM;
                
                spin_lock_irqsave(&self->lock, flags);
                ali_ircc_change_speed(self, irq->ifr_baudrate);         
                spin_unlock_irqrestore(&self->lock, flags);
                break;
        case SIOCSMEDIABUSY: /* Set media busy */
                IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ );
                if (!capable(CAP_NET_ADMIN))
                        return -EPERM;
                irda_device_set_media_busy(self->netdev, TRUE);
                break;
        case SIOCGRECEIVING: /* Check if we are receiving right now */
                IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ );
                /* This is protected */
                irq->ifr_receiving = ali_ircc_is_receiving(self);
                break;
        default:
                ret = -EOPNOTSUPP;
        }
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        
        return ret;
}

/*
 * Function ali_ircc_is_receiving (self)
 *
 *    Return TRUE is we are currently receiving a frame
 *
 */
static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
{
        unsigned long flags;
        int status = FALSE;
        int iobase;             
        
        IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ );
        
        IRDA_ASSERT(self != NULL, return FALSE;);

        spin_lock_irqsave(&self->lock, flags);

        if (self->io.speed > 115200) 
        {
                iobase = self->io.fir_base;
                
                switch_bank(iobase, BANK1);
                if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)               
                {
                        /* We are receiving something */
                        IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ );
                        status = TRUE;
                }
                switch_bank(iobase, BANK0);             
        } 
        else
        { 
                status = (self->rx_buff.state != OUTSIDE_FRAME);
        }
        
        spin_unlock_irqrestore(&self->lock, flags);
        
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
        
        return status;
}

static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
{
        struct ali_ircc_cb *self = platform_get_drvdata(dev);
        
        IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);

        if (self->io.suspended)
                return 0;

        ali_ircc_net_close(self->netdev);

        self->io.suspended = 1;
        
        return 0;
}

static int ali_ircc_resume(struct platform_device *dev)
{
        struct ali_ircc_cb *self = platform_get_drvdata(dev);
        
        if (!self->io.suspended)
                return 0;
        
        ali_ircc_net_open(self->netdev);
        
        IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);

        self->io.suspended = 0;

        return 0;
}

/* ALi Chip Function */

static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
{
        
        unsigned char newMask;
        
        int iobase = self->io.fir_base; /* or sir_base */

        IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable);
        
        /* Enable the interrupt which we wish to */
        if (enable){
                if (self->io.direction == IO_XMIT)
                {
                        if (self->io.speed > 115200) /* FIR, MIR */
                        {
                                newMask = self->ier;
                        }
                        else /* SIR */
                        {
                                newMask = UART_IER_THRI | UART_IER_RDI;
                        }
                }
                else {
                        if (self->io.speed > 115200) /* FIR, MIR */
                        {
                                newMask = self->ier;
                        }
                        else /* SIR */
                        {
                                newMask = UART_IER_RDI;
                        }
                }
        }
        else /* Disable all the interrupts */
        {
                newMask = 0x00;

        }

        //SIR and FIR has different registers
        if (self->io.speed > 115200)
        {       
                switch_bank(iobase, BANK0);
                outb(newMask, iobase+FIR_IER);
        }
        else
                outb(newMask, iobase+UART_IER);
                
        IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
}

static void SIR2FIR(int iobase)
{
        //unsigned char tmp;
                
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
        
        /* Already protected (change_speed() or setup()), no need to lock.
         * Jean II */
        
        outb(0x28, iobase+UART_MCR);
        outb(0x68, iobase+UART_MCR);
        outb(0x88, iobase+UART_MCR);            
        
        outb(0x60, iobase+FIR_MCR);     /*  Master Reset */
        outb(0x20, iobase+FIR_MCR);     /*  Master Interrupt Enable */
        
        //tmp = inb(iobase+FIR_LCR_B);  /* SIP enable */
        //tmp |= 0x20;
        //outb(tmp, iobase+FIR_LCR_B);  
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

static void FIR2SIR(int iobase)
{
        unsigned char val;
        
        IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
        
        /* Already protected (change_speed() or setup()), no need to lock.
         * Jean II */
        
        outb(0x20, iobase+FIR_MCR);     /* IRQ to low */
        outb(0x00, iobase+UART_IER);    
                
        outb(0xA0, iobase+FIR_MCR);     /* Don't set master reset */
        outb(0x00, iobase+UART_FCR);
        outb(0x07, iobase+UART_FCR);            
        
        val = inb(iobase+UART_RX);
        val = inb(iobase+UART_LSR);
        val = inb(iobase+UART_MSR);
        
        IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
}

MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
MODULE_DESCRIPTION("ALi FIR Controller Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);


module_param_array(io, int, NULL, 0);
MODULE_PARM_DESC(io, "Base I/O addresses");
module_param_array(irq, int, NULL, 0);
MODULE_PARM_DESC(irq, "IRQ lines");
module_param_array(dma, int, NULL, 0);
MODULE_PARM_DESC(dma, "DMA channels");

module_init(ali_ircc_init);
module_exit(ali_ircc_cleanup);