patch-2.2.15 linux/drivers/net/irda/uircc.c

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diff -u --new-file --recursive --exclude-from ../../exclude v2.2.14/drivers/net/irda/uircc.c linux/drivers/net/irda/uircc.c
@@ -1,953 +0,0 @@
-/*********************************************************************
- *                
- * Filename:      uircc.c
- * Version:       0.3
- * Description:   Driver for the Sharp Universal Infrared 
- *                Communications Controller (UIRCC v 1.3)
- * Status:        Experimental.
- * Author:        Dag Brattli <dagb@cs.uit.no>
- * Created at:    Sat Dec 26 10:59:03 1998
- * Modified at:   Wed May 19 15:29:56 1999
- * Modified by:   Dag Brattli <dagb@cs.uit.no>
- * 
- *     Copyright (c) 1998-1999 Dag Brattli, 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.
- *  
- *     Neither Dag Brattli nor University of Tromsų admit liability nor
- *     provide warranty for any of this software. This material is 
- *     provided "AS-IS" and at no charge.
- *
- *     Applicable Models : Tecra 510CDT, 500C Series, 530CDT, 520CDT,
- *     740CDT, Portege 300CT, 660CDT, Satellite 220C Series, 
- *     Satellite Pro, 440C Series, 470CDT, 460C Series, 480C Series
- *
- ********************************************************************/
-
-#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/malloc.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/init.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/irmod.h>
-#include <net/irda/irlap_frame.h>
-#include <net/irda/irda_device.h>
-
-#include <net/irda/uircc.h>
-#include <net/irda/irport.h>
-
-static char *driver_name = "uircc";
-
-#define CHIP_IO_EXTENT 16
-
-static unsigned int io[]  = { 0x300, ~0, ~0, ~0 };
-static unsigned int io2[] = { 0x3e8, 0, 0, 0};
-static unsigned int irq[] = { 11, 0, 0, 0 };
-static unsigned int dma[] = { 5, 0, 0, 0 };
-
-static struct uircc_cb *dev_self[] = { NULL, NULL, NULL, NULL};
-
-/* Some prototypes */
-static int  uircc_open(int i, unsigned int iobase, unsigned int board_addr, 
-		       unsigned int irq, unsigned int dma);
-#ifdef MODULE
-static int  uircc_close(struct irda_device *idev);
-#endif /* MODULE */
-static int  uircc_probe(int iobase, int board_addr, int irq, int dma);
-static int  uircc_dma_receive(struct irda_device *idev); 
-static int  uircc_dma_receive_complete(struct irda_device *idev, int iobase);
-static int  uircc_hard_xmit(struct sk_buff *skb, struct device *dev);
-static void uircc_dma_write(struct irda_device *idev, int iobase);
-static void uircc_change_speed(struct irda_device *idev, int baud);
-static void uircc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static void uircc_wait_until_sent(struct irda_device *idev);
-static int  uircc_is_receiving(struct irda_device *idev);
-static int uircc_toshiba_cmd(int *retval, int arg0, int arg1, int arg2);
-static int  uircc_net_init(struct device *dev);
-static int  uircc_net_open(struct device *dev);
-static int  uircc_net_close(struct device *dev);
-
-/*
- * Function uircc_init ()
- *
- *    Initialize chip. Just try to find out how many chips we are dealing with
- *    and where they are
- */
-__initfunc(int uircc_init(void))
-{
-	int i;
-
-	for ( i=0; (io[i] < 2000) && (i < 4); i++) {
-		int ioaddr = io[i];
-		if (check_region(ioaddr, CHIP_IO_EXTENT) < 0)
-			continue;
-		if (uircc_open(i, io[i], io2[i], irq[i], dma[i]) == 0)
-			return 0;
-	}
-	return -ENODEV;
-}
-
-/*
- * Function uircc_cleanup ()
- *
- *    Close all configured chips
- *
- */
-#ifdef MODULE
-static void uircc_cleanup(void)
-{
-	int i;
-
-        DEBUG(4, __FUNCTION__ "()\n");
-
-	for (i=0; i < 4; i++) {
-		if (dev_self[i])
-			uircc_close(&(dev_self[i]->idev));
-	}
-}
-#endif /* MODULE */
-
-/*
- * Function uircc_open (iobase, irq)
- *
- *    Open driver instance
- *
- */
-static int uircc_open(int i, unsigned int iobase, unsigned int iobase2, 
-		      unsigned int irq, unsigned int dma)
-{
-	struct uircc_cb *self;
-	struct irda_device *idev;
-	int ret;
-
-	DEBUG(4, __FUNCTION__ "()\n");
-
-	if ((uircc_probe(iobase, iobase2, irq, dma)) == -1)
-		return -1;
-	
-	/*
-	 *  Allocate new instance of the driver
-	 */
-	self = kmalloc( sizeof(struct uircc_cb), GFP_KERNEL);
-	if (self == NULL) {
-		printk(KERN_ERR "IrDA: Can't allocate memory for "
-		       "IrDA control block!\n");
-		return -ENOMEM;
-	}
-	memset(self, 0, sizeof(struct uircc_cb));
-   
-	/* Need to store self somewhere */
-	dev_self[i] = self;
-
-	idev = &self->idev;
-
-	/* Initialize IO */
-	idev->io.iobase    = iobase;
-        idev->io.iobase2   = iobase2; /* Used by irport */
-        idev->io.irq       = irq;
-        idev->io.io_ext    = CHIP_IO_EXTENT;
-        idev->io.io_ext2   = 8;       /* Used by irport */
-        idev->io.dma       = dma;
-        idev->io.fifo_size = 16;
-
-	/* Lock the port that we need */
-	ret = check_region(idev->io.iobase, idev->io.io_ext);
-	if (ret < 0) { 
-		DEBUG(0, __FUNCTION__ "(), can't get iobase of 0x%03x\n",
-		      idev->io.iobase);
-		/* uircc_cleanup( self->idev);  */
-		return -ENODEV;
-	}
-	ret = check_region(idev->io.iobase2, idev->io.io_ext2);
-	if (ret < 0) { 
-		DEBUG(0, __FUNCTION__ "(), can't get iobase of 0x%03x\n",
-		      idev->io.iobase2);
-		/* uircc_cleanup( self->idev);  */
-		return -ENODEV;
-	}
-	request_region(idev->io.iobase, idev->io.io_ext, idev->name);
-        request_region(idev->io.iobase2, idev->io.io_ext2, idev->name);
-
-	/* Initialize QoS for this device */
-	irda_init_max_qos_capabilies(&idev->qos);
-	
-	/* The only value we must override it the baudrate */
-	idev->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
-		IR_115200/*IR_576000|IR_1152000 |(IR_4000000 << 8)*/;
-
-	idev->qos.min_turn_time.bits = 0x0f;
-	irda_qos_bits_to_value(&idev->qos);
-
-	idev->flags = IFF_FIR|IFF_SIR|IFF_DMA|IFF_PIO;
-	
-	/* Specify which buffer allocation policy we need */
-	idev->rx_buff.flags = GFP_KERNEL | GFP_DMA;
-	idev->tx_buff.flags = GFP_KERNEL | GFP_DMA;
-
-	/* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
-	idev->rx_buff.truesize = 4000; 
-	idev->tx_buff.truesize = 4000;
-	
-	/* Initialize callbacks */
-	idev->change_speed    = uircc_change_speed;
-	idev->wait_until_sent = uircc_wait_until_sent;
-	idev->is_receiving    = uircc_is_receiving;
-     
-	/* Override the network functions we need to use */
-	idev->netdev.init            = uircc_net_init;
-	idev->netdev.hard_start_xmit = uircc_hard_xmit;
-	idev->netdev.open            = uircc_net_open;
-	idev->netdev.stop            = uircc_net_close;
-
-	irport_start(idev, iobase2);
-
-	/* Open the IrDA device */
-	irda_device_open(idev, driver_name, self);
-	
-	return 0;
-}
-
-/*
- * Function uircc_close (idev)
- *
- *    Close driver instance
- *
- */
-#ifdef MODULE
-static int uircc_close(struct irda_device *idev)
-{
-	struct uircc_cb *self;
-	int iobase;
-	int status;
-
-	DEBUG(4, __FUNCTION__ "()\n");
-
-	ASSERT(idev != NULL, return -1;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return -1;);
-
-        iobase = idev->io.iobase;
-	self = (struct uircc_cb *) idev->priv;
-
-	/* Some magic to disable FIR and enable SIR */
-	uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
-
-	/* Disable modem */
-	outb(0x00, iobase+UIRCC_CR10);
-
-	irport_stop(idev, idev->io.iobase2);
-
-	/* Release the PORT that this driver is using */
-	DEBUG(4, __FUNCTION__ "(), Releasing Region %03x\n", idev->io.iobase);
-	release_region(idev->io.iobase, idev->io.io_ext);
-
-	if (idev->io.iobase2) {
-		DEBUG(4, __FUNCTION__ "(), Releasing Region %03x\n", 
-		      idev->io.iobase2);
-		release_region(idev->io.iobase2, idev->io.io_ext2);
-	}
-	irda_device_close(idev);
-
-	kfree(self);
-
-	return 0;
-}
-#endif /* MODULE */
-
-/*
- * Function uircc_probe (iobase, board_addr, irq, dma)
- *
- *    Returns non-negative on success.
- *
- */
-static int uircc_probe(int iobase, int iobase2, int irq, int dma) 
-{
-	int version;
-	
-	DEBUG(4, __FUNCTION__ "()\n");
-
-	/* read the chip version, should be 0x03 */
-	version = inb(iobase+UIRCC_SR8);
-
-	if (version != 0x03) {
-		DEBUG(0, __FUNCTION__ "(), Wrong chip version");	
-		return -1;
-	}
-        printk(KERN_INFO "Sharp UIRCC IrDA driver loaded. Version: 0x%02x\n",
-	       version);
-
-	/* Reset chip */
-	outb(UIRCC_CR0_SYS_RST, iobase+UIRCC_CR0);
-
-	/* Initialize some registers */
-	outb(0x03, iobase+UIRCC_CR15);
-	outb(0, iobase+UIRCC_CR11);
-	outb(0, iobase+UIRCC_CR9);
-
-	DEBUG(0, __FUNCTION__ "(), sr15=%#x\n", inb(iobase+UIRCC_SR15));
-
-	/* Enable DMA single mode */
-	outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET, 
-	     iobase+UIRCC_CR1);
-
-	/* Disable interrupts */
-	outb(0xff, iobase+UIRCC_CR2); 
-
-	/* Set self poll address */
-
-	return 0;
-}
-
-/*
- * Function uircc_change_speed (idev, baud)
- *
- *    Change the speed of the device
- *
- */
-static void uircc_change_speed(struct irda_device *idev, int speed)
-{
-	struct uircc_cb *self;
-	int iobase; 
-	int modem = UIRCC_CR10_SIR;
-	int status;
-
-	DEBUG(0, __FUNCTION__ "()\n");
-
-	/* Just test the high speed stuff */
-	/*speed = 4000000;*/
-
-	ASSERT(idev != NULL, return;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
-	self = idev->priv;
-	iobase = idev->io.iobase;
-
-	/* Update accounting for new speed */
-	idev->io.baudrate = speed;
-
-	/* Disable interrupts */	
-	outb(0xff, iobase+UIRCC_CR2);
-
-	switch (speed) {
-	case 9600:
-	case 19200:
-	case 37600:
-	case 57600:
-	case 115200:
- 		irport_start(idev, idev->io.iobase2);
-		irport_change_speed(idev, speed);
-
-		/* Some magic to disable FIR and enable SIR */
-		uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
-
-		modem = UIRCC_CR10_SIR;
-		break;
-	case 576000:		
-		
-		DEBUG(0, __FUNCTION__ "(), handling baud of 576000\n");
-		break;
-	case 1152000:
-
-		DEBUG(0, __FUNCTION__ "(), handling baud of 1152000\n");
-		break;
-	case 4000000:
-		irport_stop(idev, idev->io.iobase2);
-
-		/* Some magic to disable SIR and enable FIR */
-		uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0001);
-
-		modem = UIRCC_CR10_FIR;
-		DEBUG(0, __FUNCTION__ "(), handling baud of 4000000\n");
-
-		/* Set self pole address */
-		//outb(0xfe, iobase+UIRCC_CR8);
-
-	 	/* outb(0x10, iobase+UIRCC_CR11); */
-		break;
-	default:
-		DEBUG( 0, __FUNCTION__ "(), unknown baud rate of %d\n", speed);
-		break;
-	}
-
-	/* Set appropriate speed mode */
-	outb(modem, iobase+UIRCC_CR10);
-
-	idev->netdev.tbusy = 0;
-	
-	/* Enable some interrupts so we can receive frames */
-	if (speed > 115200) {
-		/* Enable DMA single mode */
-		outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET, 
-		     iobase+UIRCC_CR1);
-
- 		/* Enable all interrupts  */
-		outb(0, iobase+UIRCC_CR2); 
- 		uircc_dma_receive(idev);
- 	}    	
-}
-
-/*
- * Function uircc_hard_xmit (skb, dev)
- *
- *    Transmit the frame!
- *
- */
-static int uircc_hard_xmit(struct sk_buff *skb, struct device *dev)
-{
-	struct irda_device *idev;
-	int iobase;
-	int mtt;
-	
-	idev = (struct irda_device *) dev->priv;
-
-	ASSERT(idev != NULL, return 0;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-
-	iobase = idev->io.iobase;
-
-	DEBUG(4, __FUNCTION__ "(%ld), skb->len=%d\n", jiffies, (int) skb->len);
-	
-	/* Reset carrier latch */
-	/*outb(0x02, iobase+UIRCC_CR0);*/
-
-	/* Use irport for SIR speeds */
-	if (idev->io.baudrate <= 115200) {
-		return irport_hard_xmit(skb, dev);
-	}
-	
-	DEBUG(0, __FUNCTION__ "(), sr0=%#x, sr1=%#x, sr2=%#x, sr3=%#x, sr10=%#x, sr11=%#x\n",
-	      inb(iobase+UIRCC_SR0), inb(iobase+UIRCC_SR3),
-	      inb(iobase+UIRCC_SR2), inb(iobase+UIRCC_SR3), 
-	      inb(iobase+UIRCC_SR10), inb(iobase+UIRCC_SR11));
-
-	/* Lock transmit buffer */
-	if (irda_lock((void *) &dev->tbusy) == FALSE)
-		return -EBUSY;
-
-	memcpy(idev->tx_buff.data, skb->data, skb->len);
-
-	/* Make sure that the length is a multiple of 16 bits */
-	if (skb->len & 0x01)
-		skb->len++;
-
-	idev->tx_buff.len = skb->len;
-	idev->tx_buff.data = idev->tx_buff.head;
-	
-	mtt = irda_get_mtt(skb);
-	
-	/* Use udelay for delays less than 50 us. */
-	if (mtt)
-		udelay(mtt);
-	
-	/* Enable transmit interrupts */
- 	outb(0, iobase+UIRCC_CR2);
-
-	uircc_dma_write(idev, iobase);
-	
-	dev_kfree_skb(skb);
-
-	return 0;
-}
-
-/*
- * Function uircc_dma_write (idev, iobase)
- *
- *    Transmit data using DMA
- *
- */
-static void uircc_dma_write(struct irda_device *idev, int iobase)
-{
-	struct uircc_cb *self;
-
-	DEBUG(4, __FUNCTION__ "()\n");
-
-	ASSERT(idev != NULL, return;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
-	self = idev->priv;
-
-	/* Receiving disable */
-	self->cr3 &= ~UIRCC_CR3_RECV_EN;
-	outb(self->cr3, iobase+UIRCC_CR3);
-
-	/* Set modem */
-	outb(0x80, iobase+UIRCC_CR10);
-
-	/* Enable transmit DMA */
-	outb(UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET, iobase+UIRCC_CR1);
-
-	ASSERT((((__u32)(idev->tx_buff.data)) & 0x01) != 0x01, return;);
-
-	setup_dma(idev->io.dma, idev->tx_buff.data, idev->tx_buff.len, 
-		  DMA_MODE_WRITE);
-	
-	idev->io.direction = IO_XMIT;
-
-	/* Set frame length (should be the real length without padding */
-	outb(idev->tx_buff.len & 0xff, iobase+UIRCC_CR4); /* Low byte */
-	outb(idev->tx_buff.len >> 8, iobase+UIRCC_CR5);   /* High byte */
-
-	/* Enable transmit and transmit CRC */
-	self->cr3 |= (UIRCC_CR3_XMIT_EN|UIRCC_CR3_TX_CRC_EN);
-	outb(self->cr3, iobase+UIRCC_CR3);
-}
-
-/*
- * Function uircc_dma_xmit_complete (idev)
- *
- *    The transfer of a frame in finished. This function will only be called 
- *    by the interrupt handler
- *
- */
-static void uircc_dma_xmit_complete( struct irda_device *idev, int underrun)
-{
-	struct uircc_cb *self;
-	int iobase;
-	int len;
-
-	DEBUG(4, __FUNCTION__ "()\n");
-
-	ASSERT(idev != NULL, return;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
-	self = idev->priv;
-
-	iobase = idev->io.iobase;
-
-	/* Select TX counter */
-	outb(UIRCC_CR0_CNT_SWT, iobase+UIRCC_CR0);
-
-	/* Read TX length counter */
-	len  = inb(iobase+UIRCC_SR4);      /* Low byte */
-	len |= inb(iobase+UIRCC_SR5) << 8; /* High byte */
-
-	DEBUG(4, __FUNCTION__ "(), sent %d bytes\n", len);
-
-	/* Disable transmit */
-	self->cr3 &= ~UIRCC_CR3_XMIT_EN;
-	outb(self->cr3, iobase+UIRCC_CR3);
-
-	/* Transmit reset (just to be sure) */
-	outb(UIRCC_CR0_XMIT_RST, iobase+UIRCC_CR0);
-	
-	/* Check for underrrun! */
-	if (underrun) {
-		idev->stats.tx_errors++;
-		idev->stats.tx_fifo_errors++;		
-	} else {
-		idev->stats.tx_packets++;
-		idev->stats.tx_bytes += idev->tx_buff.len;
-	}
-
-	/* Unlock tx_buff and request another frame */
-	idev->netdev.tbusy = 0; /* Unlock */
-	idev->media_busy = FALSE;
-	
-	/* Tell the network layer, that we can accept more frames */
-	mark_bh(NET_BH);
-}
-
-/*
- * Function uircc_dma_receive (idev)
- *
- *    Get ready for receiving a frame. The device will initiate a DMA
- *    if it starts to receive a frame.
- *
- */
-static int uircc_dma_receive(struct irda_device *idev) 
-{
-	struct uircc_cb *self;
-	int iobase;
-
-	ASSERT(idev != NULL, return -1;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return -1;);
-
-	DEBUG(4, __FUNCTION__ "\n");
-
-	self = idev->priv;
-	iobase= idev->io.iobase;
-
-	/* Transmit disable */
-	/* self->cr3 &= ~UIRCC_CR3_XMIT_EN; */
-	self->cr3 = 0;
-	outb(self->cr3, iobase+UIRCC_CR3);
-
-	/* Transmit reset (just in case) */
-	outb(UIRCC_CR0_XMIT_RST|0x17, iobase+UIRCC_CR0);
-
-	/* Set modem */
-	outb(0x08, iobase+UIRCC_CR10);
-
-	/* Enable receiving with CRC */
-	self->cr3 = (UIRCC_CR3_RECV_EN|UIRCC_CR3_RX_CRC_EN);
-	outb(self->cr3, iobase+UIRCC_CR3);
-
-	/* Make sure Rx DMA is set */
- 	outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_MUST_SET, iobase+UIRCC_CR1);
-
-	/* Rx reset */
-	/* outb(UIRCC_CR0_RECV_RST, iobase+UIRCC_CR0); */
-
-	setup_dma(idev->io.dma, idev->rx_buff.data, 
-		  idev->rx_buff.truesize, DMA_MODE_READ);
-	
-	/* driver->media_busy = FALSE; */
-	idev->io.direction = IO_RECV;
-	idev->rx_buff.data = idev->rx_buff.head;
-
-#if 0
-	/* Enable receiving with CRC */
-	self->cr3 = (UIRCC_CR3_RECV_EN|UIRCC_CR3_RX_CRC_EN);
-	outb(self->cr3, iobase+UIRCC_CR3);
-#endif
-	DEBUG(4, __FUNCTION__ "(), cr3=%#x\n", self->cr3);
-	
-	/* Address check? */
-
-	return 0;
-}
-
-/*
- * Function uircc_dma_receive_complete (idev)
- *
- *    Finished with receiving frames
- *
- *    
- */
-static int uircc_dma_receive_complete(struct irda_device *idev, int iobase)
-{
-	struct sk_buff *skb;
-	struct uircc_cb *self;
-	int len;
-
-	self = idev->priv;
-
-	DEBUG(0, __FUNCTION__ "()\n");
-
-	/* Check for CRC or framing error */
-	if (inb(iobase+UIRCC_SR0) & UIRCC_SR0_RX_CRCFRM) {
-		DEBUG(0, __FUNCTION__ "(), CRC or FRAME error\n");
-		return -1;
-	}
-
-	/* Select receive length counter */
-	outb(0x00, iobase+UIRCC_CR0);
-
-	/* Read frame length */
-	len = inb(iobase+UIRCC_SR4);       /* Low byte */
-	len |= inb(iobase+UIRCC_SR5) << 8; /* High byte */
-
-	DEBUG(0, __FUNCTION__ "(), len=%d\n", len);
-
-	/* Receiving disable */
-	self->cr3 &= ~UIRCC_CR3_RECV_EN;
-	outb(self->cr3, iobase+UIRCC_CR3);
-
-	skb = dev_alloc_skb(len+1);
-	if (skb == NULL)  {
-		printk(KERN_INFO __FUNCTION__ 
-		       "(), memory squeeze, dropping frame.\n");
-				/* Restore bank register */
-		return FALSE;
-	}
-			
-	/* Make sure IP header gets aligned */
-	skb_reserve(skb, 1);
-
-	/* Copy frame without CRC */
-	/* if ( idev->io.baudrate < 4000000) { */
-/* 		skb_put( skb, len-2); */
-/* 		memcpy( skb->data, idev->rx_buff.head, len-2); */
-/* 	} else { */
-/* 		skb_put( skb, len-4); */
-/* 		memcpy( skb->data, idev->rx_buff.head, len-4); */
-/* 	} */
-
-	skb_put(skb, len);
-	memcpy(skb->data, idev->rx_buff.data, len);
-	idev->stats.rx_packets++;
-
-	skb->dev = &idev->netdev;
-	skb->mac.raw  = skb->data;
-	skb->protocol = htons(ETH_P_IRDA);
-	netif_rx(skb);
-
-	return TRUE;
-}
-
-/*
- * Function uircc_interrupt (irq, dev_id, regs)
- *
- *    An interrupt from the chip has arrived. Time to do some work
- *
- */
-static void uircc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	__u8 sr3;
-	int iobase;
-
-	struct irda_device *idev = (struct irda_device *) dev_id;
-
-	if (idev == NULL) {
-		printk( KERN_WARNING "%s: irq %d for unknown device.\n", 
-			driver_name, irq);
-		return;
-	}
-	
-	if (idev->io.baudrate <= 115200)
-		return irport_interrupt( irq, dev_id, regs);
-
-	iobase = idev->io.iobase;
-
-	/* Read interrupt status */
-	sr3 = inb( iobase+UIRCC_SR3); 
-	if (!sr3) {
-		DEBUG(4,"**\n");
-		return;
-	}
-	idev->netdev.interrupt = 1;
-
-	DEBUG(4, __FUNCTION__ "(), sr3=%#x, sr2=%#x, sr10=%#x\n", 
-	      inb( iobase+UIRCC_SR3), inb( iobase+UIRCC_SR2), 
-	      inb( iobase+UIRCC_SR10));
-
-	/*
-	 *  Check what interrupt this is. The UIRCC will not report two
-	 *  different interrupts at the same time!
-	 */
-	switch(sr3) {
-	case UIRCC_SR3_RX_EOF: /* Check for end of frame */
-		uircc_dma_receive_complete(idev, iobase);
-		break;
-	case UIRCC_SR3_TXUR:   /* Check for transmit underrun */
-		uircc_dma_xmit_complete(idev, TRUE);
-		uircc_dma_receive(idev);
-		outb(0, iobase+UIRCC_CR2); 
-		break;
-	case UIRCC_SR3_TX_DONE:
-		uircc_dma_xmit_complete(idev, FALSE);
-		uircc_dma_receive(idev);
-
-		outb(0x0d, iobase+UIRCC_CR2);
-		break;
-	case UIRCC_SR3_TMR_OUT:
-		/* Disable timer */
-		outb(inb(iobase+UIRCC_CR11) & ~UIRCC_CR11_TMR_EN, 
-		     iobase+UIRCC_CR11);
-		break;
-	default:
-		DEBUG(0, __FUNCTION__ "(), unknown interrupt status=%#x\n",
-		      sr3);
-		break;
-	}	
-	idev->netdev.interrupt = 0;
-}
-
-/*
- * Function uircc_wait_until_sent (idev)
- *
- *    This function should put the current thread to sleep until all data 
- *    have been sent, so it is safe to change the speed.
- */
-static void uircc_wait_until_sent( struct irda_device *idev)
-{
-	/* Just delay 60 ms */
-	current->state = TASK_INTERRUPTIBLE;
-	schedule_timeout(6);
-}
-
-/*
- * Function uircc_is_receiving (idev)
- *
- *    Return TRUE is we are currently receiving a frame
- *
- */
-static int uircc_is_receiving( struct irda_device *idev)
-{
-	int status = FALSE;
-	/* int iobase; */
-
-	ASSERT(idev != NULL, return FALSE;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return FALSE;);
-
-	if (idev->io.baudrate > 115200) {
-		
-	} else 
-		status = (idev->rx_buff.state != OUTSIDE_FRAME);
-	
-	return status;
-}
-
-/*
- * Function uircc_net_init (dev)
- *
- *    Initialize network device
- *
- */
-static int uircc_net_init( struct device *dev)
-{
-	DEBUG( 4, __FUNCTION__ "()\n");
-
-	/* Setup to be a normal IrDA network device driver */
-	irda_device_setup(dev);
-
-	/* Insert overrides below this line! */
-
-	return 0;
-}
-
-
-/*
- * Function uircc_net_open (dev)
- *
- *    Start the device
- *
- */
-static int uircc_net_open(struct device *dev)
-{
-	struct irda_device *idev;
-	int iobase;
-	
-	DEBUG( 4, __FUNCTION__ "()\n");
-	
-	ASSERT(dev != NULL, return -1;);
-	idev = (struct irda_device *) dev->priv;
-	
-	ASSERT(idev != NULL, return 0;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-	
-	iobase = idev->io.iobase;
-
-	if (request_irq(idev->io.irq, uircc_interrupt, 0, idev->name, 
-			(void *) idev)) {
-		return -EAGAIN;
-	}
-	/*
-	 * Always allocate the DMA channel after the IRQ,
-	 * and clean up on failure.
-	 */
-	if (request_dma(idev->io.dma, idev->name)) {
-		free_irq(idev->io.irq, idev);
-		return -EAGAIN;
-	}
-		
-	/* Ready to play! */
-	dev->tbusy = 0;
-	dev->interrupt = 0;
-	dev->start = 1;
-
-	/* turn on interrupts */
-	
-	MOD_INC_USE_COUNT;
-
-	return 0;
-}
-
-/*
- * Function uircc_net_close (dev)
- *
- *    Stop the device
- *
- */
-static int uircc_net_close(struct device *dev)
-{
-	struct irda_device *idev;
-	int iobase;
-
-	DEBUG(4, __FUNCTION__ "()\n");
-	
-	/* Stop device */
-	dev->tbusy = 1;
-	dev->start = 0;
-
-	ASSERT(dev != NULL, return -1;);
-	idev = (struct irda_device *) dev->priv;
-	
-	ASSERT(idev != NULL, return 0;);
-	ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-	
-	iobase = idev->io.iobase;
-
-	disable_dma(idev->io.dma);
-
-	/* Disable interrupts */
-       
-	free_irq(idev->io.irq, idev);
-	free_dma(idev->io.dma);
-
-	MOD_DEC_USE_COUNT;
-
-	return 0;
-}
-
-/*
- * Function uircc_toshiba_cmd (arg0, arg1, arg2)
- *
- *    disable FIR: uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
- *    enable  FIR: uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0001);
- *    IRDA status: uircc_toshiba_cmd(&status, 0xfefe, 0x001b, 0x0000);
- */
-static int uircc_toshiba_cmd(int *retval, int arg0, int arg1, int arg2)
-{
-	char return_code = 0;
-
-	__asm__ volatile ("inb   $0xb2,%%al; "
-			  "movb  %%ah,%%al;  "
-			  : /* Output */
-			  "=al"  (return_code),
-			  "=ecx" (*retval)
-			  : /* Input */
-			  "ax" (arg0),
-			  "bx" (arg1),
-			  "cx" (arg2)
-		);
-	/*
-	 * Return
-	 * 0x00 = OK
-	 * 0x80 = Function not supported by system
-	 * 0x83 = Input data error
-	 */
-	return (int) return_code;
-}
-
-#ifdef MODULE
-
-/*
- * Function init_module (void)
- *
- *    
- *
- */
-int init_module(void)
-{
-	return uircc_init();
-}
-
-/*
- * Function cleanup_module (void)
- *
- *    
- *
- */
-void cleanup_module(void)
-{
-	uircc_cleanup();
-}
-#endif /* MODULE */
-

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)