Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2396 insertions, 0 deletions

diff --git a/drivers/net/irda/smsc-ircc2.c b/drivers/net/irda/smsc-ircc2.c
new file mode 100644
index 000000000000..10125a1dba22
--- /dev/null
+++ b/drivers/net/irda/smsc-ircc2.c
@@ -0,0 +1,2396 @@
+/*********************************************************************
+ * $Id: smsc-ircc2.c,v 1.19.2.5 2002/10/27 11:34:26 dip Exp $
+ *
+ * Description:   Driver for the SMC Infrared Communications Controller
+ * Status:        Experimental.
+ * Author:        Daniele Peri (peri@csai.unipa.it)
+ * Created at:    
+ * Modified at:   
+ * Modified by:   
+ * 
+ *     Copyright (c) 2002      Daniele Peri
+ *     All Rights Reserved.
+ *     Copyright (c) 2002      Jean Tourrilhes
+ *
+ *
+ * Based on smc-ircc.c:
+ *
+ *     Copyright (c) 2001      Stefani Seibold
+ *     Copyright (c) 1999-2001 Dag Brattli
+ *     Copyright (c) 1998-1999 Thomas Davis, 
+ *
+ *	and irport.c:
+ *
+ *     Copyright (c) 1997, 1998, 1999-2000 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.
+ * 
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *     GNU General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License 
+ *     along with this program; if not, write to the Free Software 
+ *     Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
+ *     MA 02111-1307 USA
+ *
+ ********************************************************************/
+
+#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 <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+
+#include <linux/spinlock.h>
+#include <linux/pm.h>
+
+#include <net/irda/wrapper.h>
+#include <net/irda/irda.h>
+#include <net/irda/irda_device.h>
+
+#include "smsc-ircc2.h"
+#include "smsc-sio.h"
+
+/* Types */
+
+struct smsc_transceiver {
+	char *name;
+	void (*set_for_speed)(int fir_base, u32 speed);	
+	int  (*probe)(int fir_base);
+};
+typedef struct smsc_transceiver smsc_transceiver_t;
+
+#if 0
+struct smc_chip {
+	char *name;
+	u16 flags;
+	u8 devid;
+	u8 rev;
+};
+typedef struct smc_chip smc_chip_t;
+#endif
+
+struct smsc_chip {
+	char *name;
+	#if 0
+	u8	type;
+	#endif
+	u16 flags;
+	u8 devid;
+	u8 rev;
+};
+typedef struct smsc_chip smsc_chip_t;
+
+struct smsc_chip_address {
+	unsigned int cfg_base;
+	unsigned int type;
+};
+typedef struct smsc_chip_address smsc_chip_address_t;
+
+/* Private data for each instance */
+struct smsc_ircc_cb {
+	struct net_device *netdev;     /* Yes! we are some kind of netdevice */
+	struct net_device_stats stats;
+	struct irlap_cb    *irlap; /* The link layer we are binded to */
+	
+	chipio_t io;               /* IrDA controller information */
+	iobuff_t tx_buff;          /* Transmit buffer */
+	iobuff_t rx_buff;          /* Receive buffer */
+	dma_addr_t tx_buff_dma;
+	dma_addr_t rx_buff_dma;
+
+	struct qos_info qos;       /* QoS capabilities for this device */
+
+	spinlock_t lock;           /* For serializing operations */
+	
+	__u32 new_speed;
+	__u32 flags;               /* Interface flags */
+
+	int tx_buff_offsets[10];   /* Offsets between frames in tx_buff */
+	int tx_len;                /* Number of frames in tx_buff */
+
+	int transceiver;
+	struct pm_dev *pmdev;
+};
+
+/* Constants */
+
+static const char *driver_name = "smsc-ircc2";
+#define	DIM(x)	(sizeof(x)/(sizeof(*(x))))
+#define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED	9600
+#define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER	1
+#define SMSC_IRCC2_C_NET_TIMEOUT			0
+#define SMSC_IRCC2_C_SIR_STOP			0
+
+/* Prototypes */
+
+static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
+static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base);
+static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq);
+static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self);
+static void smsc_ircc_init_chip(struct smsc_ircc_cb *self);
+static int __exit smsc_ircc_close(struct smsc_ircc_cb *self);
+static int  smsc_ircc_dma_receive(struct smsc_ircc_cb *self, int iobase); 
+static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self, int iobase);
+static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self);
+static int  smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev);
+static int  smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev);
+static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int iobase, int bofs);
+static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self, int iobase);
+static void smsc_ircc_change_speed(void *priv, u32 speed);
+static void smsc_ircc_set_sir_speed(void *priv, u32 speed);
+static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev);
+static void smsc_ircc_sir_start(struct smsc_ircc_cb *self);
+#if SMSC_IRCC2_C_SIR_STOP
+static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self);
+#endif
+static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self);
+static int  smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
+static int  smsc_ircc_net_open(struct net_device *dev);
+static int  smsc_ircc_net_close(struct net_device *dev);
+static int  smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+#if SMSC_IRCC2_C_NET_TIMEOUT
+static void smsc_ircc_timeout(struct net_device *dev);
+#endif
+static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev);
+static int  smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
+static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
+static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
+static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
+static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self);
+
+/* Probing */
+static int __init smsc_ircc_look_for_chips(void);
+static const smsc_chip_t * __init smsc_ircc_probe(unsigned short cfg_base,u8 reg,const smsc_chip_t *chip,char *type);
+static int __init smsc_superio_flat(const smsc_chip_t *chips, unsigned short cfg_base, char *type);
+static int __init smsc_superio_paged(const smsc_chip_t *chips, unsigned short cfg_base, char *type);
+static int __init smsc_superio_fdc(unsigned short cfg_base);
+static int __init smsc_superio_lpc(unsigned short cfg_base);
+
+/* Transceivers specific functions */
+
+static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed);
+static int  smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base);
+static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed);
+static int  smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base);
+static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed);
+static int  smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
+
+/* Power Management */
+
+static void smsc_ircc_suspend(struct smsc_ircc_cb *self);
+static void smsc_ircc_wakeup(struct smsc_ircc_cb *self);
+static int smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
+
+
+/* Transceivers for SMSC-ircc */
+
+static smsc_transceiver_t smsc_transceivers[]=
+{
+	{ "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800},
+	{ "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select},
+	{ "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc},
+	{ NULL, NULL}
+};
+#define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (DIM(smsc_transceivers)-1)
+
+/*  SMC SuperIO chipsets definitions */
+
+#define	KEY55_1	0	/* SuperIO Configuration mode with Key <0x55> */
+#define	KEY55_2	1	/* SuperIO Configuration mode with Key <0x55,0x55> */
+#define	NoIRDA	2	/* SuperIO Chip has no IRDA Port */
+#define	SIR	0	/* SuperIO Chip has only slow IRDA */
+#define	FIR	4	/* SuperIO Chip has fast IRDA */
+#define	SERx4	8	/* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
+
+static smsc_chip_t __initdata fdc_chips_flat[]=
+{
+	/* Base address 0x3f0 or 0x370 */
+	{ "37C44",	KEY55_1|NoIRDA,		0x00, 0x00 }, /* This chip cannot be detected */
+	{ "37C665GT",	KEY55_2|NoIRDA,		0x65, 0x01 },
+	{ "37C665GT",	KEY55_2|NoIRDA,		0x66, 0x01 },
+	{ "37C669",	KEY55_2|SIR|SERx4,	0x03, 0x02 },
+	{ "37C669",	KEY55_2|SIR|SERx4,	0x04, 0x02 }, /* ID? */
+	{ "37C78",	KEY55_2|NoIRDA,		0x78, 0x00 },
+	{ "37N769",	KEY55_1|FIR|SERx4,	0x28, 0x00 },
+	{ "37N869",	KEY55_1|FIR|SERx4,	0x29, 0x00 },
+	{ NULL }
+};
+
+static smsc_chip_t __initdata fdc_chips_paged[]=
+{
+	/* Base address 0x3f0 or 0x370 */
+	{ "37B72X",	KEY55_1|SIR|SERx4,	0x4c, 0x00 },
+	{ "37B77X",	KEY55_1|SIR|SERx4,	0x43, 0x00 },
+	{ "37B78X",	KEY55_1|SIR|SERx4,	0x44, 0x00 },
+	{ "37B80X",	KEY55_1|SIR|SERx4,	0x42, 0x00 },
+	{ "37C67X",	KEY55_1|FIR|SERx4,	0x40, 0x00 },
+	{ "37C93X",	KEY55_2|SIR|SERx4,	0x02, 0x01 },
+	{ "37C93XAPM",	KEY55_1|SIR|SERx4,	0x30, 0x01 },
+	{ "37C93XFR",	KEY55_2|FIR|SERx4,	0x03, 0x01 },
+	{ "37M707",	KEY55_1|SIR|SERx4,	0x42, 0x00 },
+	{ "37M81X",	KEY55_1|SIR|SERx4,	0x4d, 0x00 },
+	{ "37N958FR",	KEY55_1|FIR|SERx4,	0x09, 0x04 },
+	{ "37N971",	KEY55_1|FIR|SERx4,	0x0a, 0x00 },
+	{ "37N972",	KEY55_1|FIR|SERx4,	0x0b, 0x00 },
+	{ NULL }
+};
+
+static smsc_chip_t __initdata lpc_chips_flat[]=
+{
+	/* Base address 0x2E or 0x4E */
+	{ "47N227",	KEY55_1|FIR|SERx4,	0x5a, 0x00 },
+	{ "47N267",	KEY55_1|FIR|SERx4,	0x5e, 0x00 },
+	{ NULL }
+};
+
+static smsc_chip_t __initdata lpc_chips_paged[]=
+{
+	/* Base address 0x2E or 0x4E */
+	{ "47B27X",	KEY55_1|SIR|SERx4,	0x51, 0x00 },
+	{ "47B37X",	KEY55_1|SIR|SERx4,	0x52, 0x00 },
+	{ "47M10X",	KEY55_1|SIR|SERx4,	0x59, 0x00 },
+	{ "47M120",	KEY55_1|NoIRDA|SERx4,	0x5c, 0x00 },
+	{ "47M13X",	KEY55_1|SIR|SERx4,	0x59, 0x00 },
+	{ "47M14X",	KEY55_1|SIR|SERx4,	0x5f, 0x00 },
+	{ "47N252",	KEY55_1|FIR|SERx4,	0x0e, 0x00 },
+	{ "47S42X",	KEY55_1|SIR|SERx4,	0x57, 0x00 },
+	{ NULL }
+};
+
+#define SMSCSIO_TYPE_FDC	1
+#define SMSCSIO_TYPE_LPC	2
+#define SMSCSIO_TYPE_FLAT	4
+#define SMSCSIO_TYPE_PAGED	8
+
+static smsc_chip_address_t __initdata possible_addresses[]=
+{
+	{0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED},
+	{0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED},
+	{0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED},
+	{0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED},
+	{0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED},
+	{0,0}
+};
+
+/* Globals */
+
+static struct smsc_ircc_cb *dev_self[] = { NULL, NULL};
+
+static int ircc_irq=255;
+static int ircc_dma=255;
+static int ircc_fir=0;
+static int ircc_sir=0;
+static int ircc_cfg=0;
+static int ircc_transceiver=0;
+
+static unsigned short	dev_count=0;
+
+static inline void register_bank(int iobase, int bank)
+{
+        outb(((inb(iobase+IRCC_MASTER) & 0xf0) | (bank & 0x07)),
+               iobase+IRCC_MASTER);
+}
+
+
+/*******************************************************************************
+ *
+ *
+ * SMSC-ircc stuff
+ *
+ *
+ *******************************************************************************/
+
+/*
+ * Function smsc_ircc_init ()
+ *
+ *    Initialize chip. Just try to find out how many chips we are dealing with
+ *    and where they are
+ */
+static int __init smsc_ircc_init(void)
+{
+	int ret=-ENODEV;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	dev_count=0;
+ 
+	if ((ircc_fir>0)&&(ircc_sir>0)) {
+		IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
+		IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
+
+		if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq) == 0)
+			return 0;
+
+		return -ENODEV;
+	}
+
+	/* try user provided configuration register base address */
+	if (ircc_cfg>0) {
+	        IRDA_MESSAGE(" Overriding configuration address 0x%04x\n",
+			     ircc_cfg);
+		if (!smsc_superio_fdc(ircc_cfg))
+			ret = 0;
+		if (!smsc_superio_lpc(ircc_cfg))
+			ret = 0;
+	}
+	
+	if(smsc_ircc_look_for_chips()>0) ret = 0;
+	
+	return ret;
+}
+
+/*
+ * Function smsc_ircc_open (firbase, sirbase, dma, irq)
+ *
+ *    Try to open driver instance
+ *
+ */
+static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq)
+{
+	struct smsc_ircc_cb *self;
+	struct net_device *dev;
+	int err;
+	
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	err = smsc_ircc_present(fir_base, sir_base);
+	if(err) 
+		goto err_out;
+		
+	err = -ENOMEM;
+	if (dev_count > DIM(dev_self)) {
+	        IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__);
+		goto err_out1;
+	}
+
+	/*
+	 *  Allocate new instance of the driver
+	 */
+	dev = alloc_irdadev(sizeof(struct smsc_ircc_cb));
+	if (!dev) {
+		IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__);
+		goto err_out1;
+	}
+
+	SET_MODULE_OWNER(dev);
+
+	dev->hard_start_xmit = smsc_ircc_hard_xmit_sir;
+#if SMSC_IRCC2_C_NET_TIMEOUT
+	dev->tx_timeout	     = smsc_ircc_timeout;
+	dev->watchdog_timeo  = HZ*2;  /* Allow enough time for speed change */
+#endif
+	dev->open            = smsc_ircc_net_open;
+	dev->stop            = smsc_ircc_net_close;
+	dev->do_ioctl        = smsc_ircc_net_ioctl;
+	dev->get_stats	     = smsc_ircc_net_get_stats;
+	
+	self = dev->priv;
+	self->netdev = dev;
+
+	/* Make ifconfig display some details */
+	dev->base_addr = self->io.fir_base = fir_base;
+	dev->irq = self->io.irq = irq;
+
+	/* Need to store self somewhere */
+	dev_self[dev_count++] = self;
+	spin_lock_init(&self->lock);
+
+	self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; 
+	self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE;
+
+	self->rx_buff.head =
+		dma_alloc_coherent(NULL, self->rx_buff.truesize,
+				   &self->rx_buff_dma, GFP_KERNEL);
+	if (self->rx_buff.head == NULL) {
+		IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
+			   driver_name);
+		goto err_out2;
+	}
+
+	self->tx_buff.head =
+		dma_alloc_coherent(NULL, self->tx_buff.truesize,
+				   &self->tx_buff_dma, GFP_KERNEL);
+	if (self->tx_buff.head == NULL) {
+		IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
+			   driver_name);
+		goto err_out3;
+	}
+
+	memset(self->rx_buff.head, 0, self->rx_buff.truesize);
+	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;
+	   
+	smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq);
+
+	smsc_ircc_setup_qos(self);
+
+	smsc_ircc_init_chip(self);
+	
+	if(ircc_transceiver > 0  && 
+	   ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS)
+		self->transceiver = ircc_transceiver;
+	else
+		smsc_ircc_probe_transceiver(self);
+
+	err = register_netdev(self->netdev);
+	if(err) {
+		IRDA_ERROR("%s, Network device registration failed!\n",
+			   driver_name);
+		goto err_out4;
+	}
+
+	self->pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, smsc_ircc_pmproc);
+	if (self->pmdev)
+		self->pmdev->data = self;
+
+	IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
+
+	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:
+	free_netdev(self->netdev);
+	dev_self[--dev_count] = NULL;
+ err_out1:
+	release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
+	release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
+ err_out:
+	return err;
+}
+
+/*
+ * Function smsc_ircc_present(fir_base, sir_base)
+ *
+ *    Check the smsc-ircc chip presence
+ *
+ */
+static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base)
+{
+	unsigned char low, high, chip, config, dma, irq, version;
+
+	if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT,
+			    driver_name)) {
+		IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
+			     __FUNCTION__, fir_base);
+		goto out1;
+	}
+
+	if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT,
+			    driver_name)) {
+		IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
+			     __FUNCTION__, sir_base);
+		goto out2;
+	}
+
+	register_bank(fir_base, 3);
+
+	high    = inb(fir_base+IRCC_ID_HIGH);
+	low     = inb(fir_base+IRCC_ID_LOW);
+	chip    = inb(fir_base+IRCC_CHIP_ID);
+	version = inb(fir_base+IRCC_VERSION);
+	config  = inb(fir_base+IRCC_INTERFACE);
+	dma     = config & IRCC_INTERFACE_DMA_MASK;
+	irq     = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
+
+	if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { 
+	        IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
+			     __FUNCTION__, fir_base);
+		goto out3;
+	}
+	IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
+		     "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
+		     chip & 0x0f, version, fir_base, sir_base, dma, irq);
+
+	return 0;
+ out3:
+	release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
+ out2:
+	release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
+ out1:
+	return -ENODEV;
+}
+
+/*
+ * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
+ *
+ *    Setup I/O
+ *
+ */
+static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, 
+			       unsigned int fir_base, unsigned int sir_base, 
+			       u8 dma, u8 irq)
+{
+	unsigned char config, chip_dma, chip_irq;
+
+	register_bank(fir_base, 3);
+	config  = inb(fir_base+IRCC_INTERFACE);
+	chip_dma     = config & IRCC_INTERFACE_DMA_MASK;
+	chip_irq     = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
+
+	self->io.fir_base  = fir_base;
+	self->io.sir_base  = sir_base;
+	self->io.fir_ext   = SMSC_IRCC2_FIR_CHIP_IO_EXTENT;
+	self->io.sir_ext   = SMSC_IRCC2_SIR_CHIP_IO_EXTENT;
+	self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE;
+	self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED;
+
+	if (irq < 255) {
+		if (irq != chip_irq)
+			IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
+				     driver_name, chip_irq, irq);
+		self->io.irq = irq;
+	}
+	else
+		self->io.irq = chip_irq;
+	
+	if (dma < 255) {
+		if (dma != chip_dma)
+			IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
+				     driver_name, chip_dma, dma);
+		self->io.dma = dma;
+	}
+	else
+		self->io.dma = chip_dma;
+
+}
+
+/*
+ * Function smsc_ircc_setup_qos(self)
+ *
+ *    Setup qos
+ *
+ */
+static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
+{
+	/* Initialize QoS for this device */
+	irda_init_max_qos_capabilies(&self->qos);
+	
+	self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
+		IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
+
+	self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME;
+	self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE;
+	irda_qos_bits_to_value(&self->qos);
+}
+
+/*
+ * Function smsc_ircc_init_chip(self)
+ *
+ *    Init chip
+ *
+ */
+static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
+{
+	int iobase, ir_mode, ctrl, fast; 
+	
+	IRDA_ASSERT( self != NULL, return; );
+	iobase = self->io.fir_base;
+
+	ir_mode = IRCC_CFGA_IRDA_SIR_A;
+	ctrl = 0;
+	fast = 0;
+
+	register_bank(iobase, 0);
+	outb(IRCC_MASTER_RESET, iobase+IRCC_MASTER);
+	outb(0x00, iobase+IRCC_MASTER);
+
+	register_bank(iobase, 1);
+	outb(((inb(iobase+IRCC_SCE_CFGA) & 0x87) | ir_mode), 
+	     iobase+IRCC_SCE_CFGA);
+
+#ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
+	outb(((inb(iobase+IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), 
+	     iobase+IRCC_SCE_CFGB);
+#else	
+	outb(((inb(iobase+IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
+	     iobase+IRCC_SCE_CFGB);
+#endif	
+	(void) inb(iobase+IRCC_FIFO_THRESHOLD);
+	outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase+IRCC_FIFO_THRESHOLD);
+	
+	register_bank(iobase, 4);
+	outb((inb(iobase+IRCC_CONTROL) & 0x30) | ctrl, iobase+IRCC_CONTROL);
+	
+	register_bank(iobase, 0);
+	outb(fast, iobase+IRCC_LCR_A);
+
+	smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
+	
+	/* Power on device */
+	outb(0x00, iobase+IRCC_MASTER);
+}
+
+/*
+ * Function smsc_ircc_net_ioctl (dev, rq, cmd)
+ *
+ *    Process IOCTL commands for this device
+ *
+ */
+static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct if_irda_req *irq = (struct if_irda_req *) rq;
+	struct smsc_ircc_cb *self;
+	unsigned long flags;
+	int ret = 0;
+
+	IRDA_ASSERT(dev != NULL, return -1;);
+
+	self = dev->priv;
+
+	IRDA_ASSERT(self != NULL, return -1;);
+
+	IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd);
+	
+	switch (cmd) {
+	case SIOCSBANDWIDTH: /* Set bandwidth */
+		if (!capable(CAP_NET_ADMIN))
+			ret = -EPERM;
+                else {
+			/* Make sure we are the only one touching
+			 * self->io.speed and the hardware - Jean II */
+			spin_lock_irqsave(&self->lock, flags);
+			smsc_ircc_change_speed(self, irq->ifr_baudrate);
+			spin_unlock_irqrestore(&self->lock, flags);
+		}
+		break;
+	case SIOCSMEDIABUSY: /* Set media busy */
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+
+		irda_device_set_media_busy(self->netdev, TRUE);
+		break;
+	case SIOCGRECEIVING: /* Check if we are receiving right now */
+		irq->ifr_receiving = smsc_ircc_is_receiving(self);
+		break;
+	#if 0
+	case SIOCSDTRRTS:
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+		smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);
+		break;
+	#endif
+	default:
+		ret = -EOPNOTSUPP;
+	}
+	
+	return ret;
+}
+
+static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev)
+{
+	struct smsc_ircc_cb *self = (struct smsc_ircc_cb *) dev->priv;
+	
+	return &self->stats;
+}
+
+#if SMSC_IRCC2_C_NET_TIMEOUT
+/*
+ * Function smsc_ircc_timeout (struct net_device *dev)
+ *
+ *    The networking timeout management.
+ *
+ */
+
+static void smsc_ircc_timeout(struct net_device *dev)
+{
+	struct smsc_ircc_cb *self;
+	unsigned long flags;
+
+	self = (struct smsc_ircc_cb *) dev->priv;
+	
+	IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
+		     dev->name, self->io.speed);
+	spin_lock_irqsave(&self->lock, flags);
+	smsc_ircc_sir_start(self);
+	smsc_ircc_change_speed(self, self->io.speed);
+	dev->trans_start = jiffies;
+	netif_wake_queue(dev);
+	spin_unlock_irqrestore(&self->lock, flags);
+}
+#endif
+
+/*
+ * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
+ *
+ *    Transmits the current frame until FIFO is full, then
+ *    waits until the next transmit interrupt, and continues until the
+ *    frame is transmitted.
+ */
+int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev)
+{
+	struct smsc_ircc_cb *self;
+	unsigned long flags;
+	int iobase;
+	s32 speed;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	IRDA_ASSERT(dev != NULL, return 0;);
+	
+	self = (struct smsc_ircc_cb *) dev->priv;
+	IRDA_ASSERT(self != NULL, return 0;);
+
+	iobase = self->io.sir_base;
+
+	netif_stop_queue(dev);
+	
+	/* Make sure test of self->io.speed & speed change are atomic */
+	spin_lock_irqsave(&self->lock, flags);
+
+	/* 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) {
+			/*
+			 * We send frames one by one in SIR mode (no
+			 * pipelining), so at this point, if we were sending
+			 * a previous frame, we just received the interrupt
+			 * telling us it is finished (UART_IIR_THRI).
+			 * Therefore, waiting for the transmitter to really
+			 * finish draining the fifo won't take too long.
+			 * And the interrupt handler is not expected to run.
+			 * - Jean II */
+			smsc_ircc_sir_wait_hw_transmitter_finish(self);
+			smsc_ircc_change_speed(self, speed);
+			spin_unlock_irqrestore(&self->lock, flags);
+			dev_kfree_skb(skb);
+			return 0;
+		} 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->stats.tx_bytes += self->tx_buff.len;
+
+	/* Turn on transmit finished interrupt. Will fire immediately!  */
+	outb(UART_IER_THRI, iobase+UART_IER); 
+
+	spin_unlock_irqrestore(&self->lock, flags);
+
+	dev_kfree_skb(skb);
+	
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_set_fir_speed (self, baud)
+ *
+ *    Change the speed of the device
+ *
+ */
+static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed)
+{
+	int fir_base, ir_mode, ctrl, fast;
+
+	IRDA_ASSERT(self != NULL, return;);
+	fir_base = self->io.fir_base;
+
+	self->io.speed = speed;
+
+	switch(speed) {
+	default:
+	case 576000:		
+		ir_mode = IRCC_CFGA_IRDA_HDLC;
+		ctrl = IRCC_CRC;
+		fast = 0;
+		IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__);
+		break;
+	case 1152000:
+		ir_mode = IRCC_CFGA_IRDA_HDLC;
+		ctrl = IRCC_1152 | IRCC_CRC;
+		fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA;
+		IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
+			   __FUNCTION__);
+		break;
+	case 4000000:
+		ir_mode = IRCC_CFGA_IRDA_4PPM;
+		ctrl = IRCC_CRC;
+		fast = IRCC_LCR_A_FAST;
+		IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
+			   __FUNCTION__);
+		break;
+	}
+	#if 0
+	Now in tranceiver!
+	/* This causes an interrupt */
+	register_bank(fir_base, 0);
+	outb((inb(fir_base+IRCC_LCR_A) &  0xbf) | fast, fir_base+IRCC_LCR_A);
+	#endif
+	
+	register_bank(fir_base, 1);
+	outb(((inb(fir_base+IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base+IRCC_SCE_CFGA);
+	
+	register_bank(fir_base, 4);
+	outb((inb(fir_base+IRCC_CONTROL) & 0x30) | ctrl, fir_base+IRCC_CONTROL);
+}
+
+/*
+ * Function smsc_ircc_fir_start(self)
+ *
+ *    Change the speed of the device
+ *
+ */
+static void smsc_ircc_fir_start(struct smsc_ircc_cb *self)
+{
+	struct net_device *dev;
+	int fir_base;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	IRDA_ASSERT(self != NULL, return;);
+	dev = self->netdev;
+	IRDA_ASSERT(dev != NULL, return;);
+
+	fir_base = self->io.fir_base;
+
+	/* Reset everything */
+
+	/* Install FIR transmit handler */
+	dev->hard_start_xmit = smsc_ircc_hard_xmit_fir;	
+
+	/* Clear FIFO */
+	outb(inb(fir_base+IRCC_LCR_A)|IRCC_LCR_A_FIFO_RESET, fir_base+IRCC_LCR_A);
+
+	/* Enable interrupt */
+	/*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base+IRCC_IER);*/
+
+	register_bank(fir_base, 1);
+
+	/* Select the TX/RX interface */	
+#ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
+	outb(((inb(fir_base+IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), 
+	     fir_base+IRCC_SCE_CFGB);
+#else	
+	outb(((inb(fir_base+IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
+	     fir_base+IRCC_SCE_CFGB);
+#endif	
+	(void) inb(fir_base+IRCC_FIFO_THRESHOLD);
+
+	/* Enable SCE interrupts */
+	outb(0, fir_base+IRCC_MASTER);
+	register_bank(fir_base, 0);
+	outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base+IRCC_IER);
+	outb(IRCC_MASTER_INT_EN, fir_base+IRCC_MASTER);
+}
+
+/*
+ * Function smsc_ircc_fir_stop(self, baud)
+ *
+ *    Change the speed of the device
+ *
+ */
+static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self)
+{
+	int fir_base;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+	
+	IRDA_ASSERT(self != NULL, return;);
+
+	fir_base = self->io.fir_base;
+	register_bank(fir_base, 0);
+	/*outb(IRCC_MASTER_RESET, fir_base+IRCC_MASTER);*/	
+	outb(inb(fir_base+IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base+IRCC_LCR_B);
+}
+
+
+/*
+ * Function smsc_ircc_change_speed(self, baud)
+ *
+ *    Change the speed of the device
+ *
+ * This function *must* be called with spinlock held, because it may
+ * be called from the irq handler. - Jean II
+ */
+static void smsc_ircc_change_speed(void *priv, u32 speed)
+{
+	struct smsc_ircc_cb *self = (struct smsc_ircc_cb *) priv;
+	struct net_device *dev;
+	int iobase;
+	int last_speed_was_sir;
+	
+	IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed);
+
+	IRDA_ASSERT(self != NULL, return;);
+	dev = self->netdev;
+	iobase = self->io.fir_base;
+
+	last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED;
+
+	#if 0
+	/* Temp Hack */
+	speed= 1152000;
+	self->io.speed = speed;
+	last_speed_was_sir = 0;
+	smsc_ircc_fir_start(self);	
+	#endif
+	
+	if(self->io.speed == 0)
+		smsc_ircc_sir_start(self);
+
+	#if 0
+	if(!last_speed_was_sir) speed = self->io.speed;
+	#endif
+
+	if(self->io.speed != speed) smsc_ircc_set_transceiver_for_speed(self, speed);
+
+	self->io.speed = speed;
+	
+	if(speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
+		if(!last_speed_was_sir) {
+			smsc_ircc_fir_stop(self);
+			smsc_ircc_sir_start(self);
+		}
+		smsc_ircc_set_sir_speed(self, speed); 
+	}
+	else {
+		if(last_speed_was_sir) {
+			#if SMSC_IRCC2_C_SIR_STOP		
+			smsc_ircc_sir_stop(self);
+			#endif
+			smsc_ircc_fir_start(self);
+		}
+		smsc_ircc_set_fir_speed(self, speed);
+
+		#if 0
+		self->tx_buff.len = 10;
+		self->tx_buff.data = self->tx_buff.head;
+		
+		smsc_ircc_dma_xmit(self, iobase, 4000);
+		#endif
+		/* Be ready for incoming frames */
+		smsc_ircc_dma_receive(self, iobase);
+	}
+	
+	netif_wake_queue(dev);
+}
+
+/*
+ * Function smsc_ircc_set_sir_speed (self, speed)
+ *
+ *    Set speed of IrDA port to specified baudrate
+ *
+ */
+void smsc_ircc_set_sir_speed(void *priv, __u32 speed)
+{
+	struct smsc_ircc_cb *self = (struct smsc_ircc_cb *) priv;
+	int iobase; 
+	int fcr;    /* FIFO control reg */
+	int lcr;    /* Line control reg */
+	int divisor;
+
+	IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed);
+
+	IRDA_ASSERT(self != NULL, return;);
+	iobase = self->io.sir_base;
+	
+	/* Update accounting for new speed */
+	self->io.speed = speed;
+
+	/* Turn off interrupts */
+	outb(0, iobase+UART_IER); 
+
+	divisor = SMSC_IRCC2_MAX_SIR_SPEED/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 */
+
+	/* Turn on interrups */
+	outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, iobase+UART_IER);
+
+	IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed);
+}
+
+
+/*
+ * Function smsc_ircc_hard_xmit_fir (skb, dev)
+ *
+ *    Transmit the frame!
+ *
+ */
+static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev)
+{
+	struct smsc_ircc_cb *self;
+	unsigned long flags;
+	s32 speed;
+	int iobase;
+	int mtt;
+
+	IRDA_ASSERT(dev != NULL, return 0;);
+	self = (struct smsc_ircc_cb *) dev->priv;
+	IRDA_ASSERT(self != NULL, return 0;);
+
+	iobase = self->io.fir_base;
+
+	netif_stop_queue(dev);
+
+	/* Make sure test of self->io.speed & speed change are atomic */
+	spin_lock_irqsave(&self->lock, flags);
+
+	/* Check if we need to change the speed after this frame */
+	speed = irda_get_next_speed(skb);
+	if ((speed != self->io.speed) && (speed != -1)) {
+		/* Check for empty frame */
+		if (!skb->len) {
+			/* 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 */
+			smsc_ircc_change_speed(self, speed); 
+			spin_unlock_irqrestore(&self->lock, flags);
+			dev_kfree_skb(skb);
+			return 0;
+		} else
+			self->new_speed = speed;
+	}
+	
+	memcpy(self->tx_buff.head, skb->data, skb->len);
+
+	self->tx_buff.len = skb->len;
+	self->tx_buff.data = self->tx_buff.head;
+	
+	mtt = irda_get_mtt(skb);	
+	if (mtt) {
+		int bofs;
+
+		/* 
+		 * Compute how many BOFs (STA or PA's) we need to waste the
+		 * min turn time given the speed of the link.
+		 */
+		bofs = mtt * (self->io.speed / 1000) / 8000;
+		if (bofs > 4095)
+			bofs = 4095;
+
+		smsc_ircc_dma_xmit(self, iobase, bofs);
+	} else {
+		/* Transmit frame */
+		smsc_ircc_dma_xmit(self, iobase, 0);
+	}
+	spin_unlock_irqrestore(&self->lock, flags);
+	dev_kfree_skb(skb);
+
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_dma_xmit (self, iobase)
+ *
+ *    Transmit data using DMA
+ *
+ */
+static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int iobase, int bofs)
+{
+	u8 ctrl;
+
+	IRDA_DEBUG(3, "%s\n", __FUNCTION__);
+#if 1
+	/* Disable Rx */
+	register_bank(iobase, 0);
+	outb(0x00, iobase+IRCC_LCR_B);
+#endif
+	register_bank(iobase, 1);
+	outb(inb(iobase+IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, 
+	     iobase+IRCC_SCE_CFGB);
+
+	self->io.direction = IO_XMIT;
+
+	/* Set BOF additional count for generating the min turn time */
+	register_bank(iobase, 4);
+	outb(bofs & 0xff, iobase+IRCC_BOF_COUNT_LO);
+	ctrl = inb(iobase+IRCC_CONTROL) & 0xf0;
+	outb(ctrl | ((bofs >> 8) & 0x0f), iobase+IRCC_BOF_COUNT_HI);
+
+	/* Set max Tx frame size */
+	outb(self->tx_buff.len >> 8, iobase+IRCC_TX_SIZE_HI);
+	outb(self->tx_buff.len & 0xff, iobase+IRCC_TX_SIZE_LO);
+
+	/*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
+	
+	/* Enable burst mode chip Tx DMA */
+	register_bank(iobase, 1);
+	outb(inb(iobase+IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
+	     IRCC_CFGB_DMA_BURST, iobase+IRCC_SCE_CFGB);
+
+	/* Setup DMA controller (must be done after enabling chip DMA) */
+	irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len,
+		       DMA_TX_MODE);
+
+	/* Enable interrupt */
+
+	register_bank(iobase, 0);
+	outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase+IRCC_IER);
+	outb(IRCC_MASTER_INT_EN, iobase+IRCC_MASTER);
+	
+	/* Enable transmit */
+	outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase+IRCC_LCR_B);
+}
+
+/*
+ * Function smsc_ircc_dma_xmit_complete (self)
+ *
+ *    The transfer of a frame in finished. This function will only be called 
+ *    by the interrupt handler
+ *
+ */
+static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self, int iobase)
+{
+	IRDA_DEBUG(3, "%s\n", __FUNCTION__);
+#if 0
+	/* Disable Tx */
+	register_bank(iobase, 0);
+	outb(0x00, iobase+IRCC_LCR_B);
+#endif
+	register_bank(self->io.fir_base, 1);
+	outb(inb(self->io.fir_base+IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
+	     self->io.fir_base+IRCC_SCE_CFGB);
+
+	/* Check for underrun! */
+	register_bank(iobase, 0);
+	if (inb(iobase+IRCC_LSR) & IRCC_LSR_UNDERRUN) {
+		self->stats.tx_errors++;
+		self->stats.tx_fifo_errors++;
+
+		/* Reset error condition */
+		register_bank(iobase, 0);
+		outb(IRCC_MASTER_ERROR_RESET, iobase+IRCC_MASTER);
+		outb(0x00, iobase+IRCC_MASTER);
+	} else {
+		self->stats.tx_packets++;
+		self->stats.tx_bytes +=  self->tx_buff.len;
+	}
+
+	/* Check if it's time to change the speed */
+	if (self->new_speed) {
+		smsc_ircc_change_speed(self, self->new_speed);		
+		self->new_speed = 0;
+	}
+
+	netif_wake_queue(self->netdev);
+}
+
+/*
+ * Function smsc_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 smsc_ircc_dma_receive(struct smsc_ircc_cb *self, int iobase) 
+{
+#if 0
+	/* Turn off chip DMA */
+	register_bank(iobase, 1);
+	outb(inb(iobase+IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, 
+	     iobase+IRCC_SCE_CFGB);
+#endif
+	
+	/* Disable Tx */
+	register_bank(iobase, 0);
+	outb(0x00, iobase+IRCC_LCR_B);
+
+	/* Turn off chip DMA */
+	register_bank(iobase, 1);
+	outb(inb(iobase+IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, 
+	     iobase+IRCC_SCE_CFGB);
+
+	self->io.direction = IO_RECV;
+	self->rx_buff.data = self->rx_buff.head;
+
+	/* Set max Rx frame size */
+	register_bank(iobase, 4);
+	outb((2050 >> 8) & 0x0f, iobase+IRCC_RX_SIZE_HI);
+	outb(2050 & 0xff, iobase+IRCC_RX_SIZE_LO);
+
+	/* Setup DMA controller */
+	irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
+		       DMA_RX_MODE);
+
+	/* Enable burst mode chip Rx DMA */
+	register_bank(iobase, 1);
+	outb(inb(iobase+IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | 
+	     IRCC_CFGB_DMA_BURST, iobase+IRCC_SCE_CFGB);
+
+	/* Enable interrupt */
+	register_bank(iobase, 0);
+	outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase+IRCC_IER);
+	outb(IRCC_MASTER_INT_EN, iobase+IRCC_MASTER);
+
+
+	/* Enable receiver */
+	register_bank(iobase, 0);
+	outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, 
+	     iobase+IRCC_LCR_B);
+	
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_dma_receive_complete(self, iobase)
+ *
+ *    Finished with receiving frames
+ *
+ */
+static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self, int iobase)
+{
+	struct sk_buff *skb;
+	int len, msgcnt, lsr;
+	
+	register_bank(iobase, 0);
+	
+	IRDA_DEBUG(3, "%s\n", __FUNCTION__);
+#if 0
+	/* Disable Rx */
+	register_bank(iobase, 0);
+	outb(0x00, iobase+IRCC_LCR_B);
+#endif
+	register_bank(iobase, 0);
+	outb(inb(iobase+IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase+IRCC_LSAR);
+	lsr= inb(iobase+IRCC_LSR);
+	msgcnt = inb(iobase+IRCC_LCR_B) & 0x08;
+
+	IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__,
+		   get_dma_residue(self->io.dma));
+
+	len = self->rx_buff.truesize - get_dma_residue(self->io.dma);
+
+	/* Look for errors 
+	 */	
+
+	if(lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) {
+		self->stats.rx_errors++;
+		if(lsr & IRCC_LSR_FRAME_ERROR) self->stats.rx_frame_errors++;
+		if(lsr & IRCC_LSR_CRC_ERROR) self->stats.rx_crc_errors++;
+		if(lsr & IRCC_LSR_SIZE_ERROR) self->stats.rx_length_errors++;
+		if(lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) self->stats.rx_length_errors++;
+		return;
+	}
+	/* Remove CRC */
+	if (self->io.speed < 4000000)
+		len -= 2;
+	else
+		len -= 4;
+
+	if ((len < 2) || (len > 2050)) {
+		IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len);
+		return;
+	}
+	IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len);
+
+	skb = dev_alloc_skb(len+1);
+	if (!skb)  {
+		IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
+			     __FUNCTION__);
+		return;
+	}			
+	/* Make sure IP header gets aligned */
+	skb_reserve(skb, 1); 
+
+	memcpy(skb_put(skb, len), self->rx_buff.data, len);
+	self->stats.rx_packets++;
+	self->stats.rx_bytes += len;
+
+	skb->dev = self->netdev;
+	skb->mac.raw  = skb->data;
+	skb->protocol = htons(ETH_P_IRDA);
+	netif_rx(skb);
+}
+
+/*
+ * Function smsc_ircc_sir_receive (self)
+ *
+ *    Receive one frame from the infrared port
+ *
+ */
+static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) 
+{
+	int boguscount = 0;
+	int iobase;
+
+	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->stats, &self->rx_buff, 
+				  inb(iobase+UART_RX));
+
+		/* Make sure we don't stay here to long */
+		if (boguscount++ > 32) {
+			IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__);
+			break;
+		}
+	} while (inb(iobase+UART_LSR) & UART_LSR_DR);	
+}
+
+
+/*
+ * Function smsc_ircc_interrupt (irq, dev_id, regs)
+ *
+ *    An interrupt from the chip has arrived. Time to do some work
+ *
+ */
+static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = (struct net_device *) dev_id;
+	struct smsc_ircc_cb *self;
+	int iobase, iir, lcra, lsr;
+	irqreturn_t ret = IRQ_NONE;
+
+	if (dev == NULL) {
+		printk(KERN_WARNING "%s: irq %d for unknown device.\n", 
+		       driver_name, irq);
+		goto irq_ret;
+	}
+	self = (struct smsc_ircc_cb *) dev->priv;
+	IRDA_ASSERT(self != NULL, return IRQ_NONE;);
+
+	/* Serialise the interrupt handler in various CPUs, stop Tx path */
+	spin_lock(&self->lock);	
+
+	/* Check if we should use the SIR interrupt handler */
+	if (self->io.speed <=  SMSC_IRCC2_MAX_SIR_SPEED) {
+		ret = smsc_ircc_interrupt_sir(dev);
+		goto irq_ret_unlock;
+	}
+
+	iobase = self->io.fir_base;
+
+	register_bank(iobase, 0);
+	iir = inb(iobase+IRCC_IIR);
+	if (iir == 0) 
+		goto irq_ret_unlock;
+	ret = IRQ_HANDLED;
+
+	/* Disable interrupts */
+	outb(0, iobase+IRCC_IER);
+	lcra = inb(iobase+IRCC_LCR_A);
+	lsr = inb(iobase+IRCC_LSR);
+	
+	IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir);
+
+	if (iir & IRCC_IIR_EOM) {
+		if (self->io.direction == IO_RECV)
+			smsc_ircc_dma_receive_complete(self, iobase);
+		else
+			smsc_ircc_dma_xmit_complete(self, iobase);
+		
+		smsc_ircc_dma_receive(self, iobase);
+	}
+
+	if (iir & IRCC_IIR_ACTIVE_FRAME) {
+		/*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/
+	}
+
+	/* Enable interrupts again */
+
+	register_bank(iobase, 0);
+	outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, iobase+IRCC_IER);
+
+ irq_ret_unlock:
+	spin_unlock(&self->lock);
+ irq_ret:
+	return ret;
+}
+
+/*
+ * Function irport_interrupt_sir (irq, dev_id, regs)
+ *
+ *    Interrupt handler for SIR modes
+ */
+static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev)
+{
+	struct smsc_ircc_cb *self = dev->priv;
+	int boguscount = 0;
+	int iobase;
+	int iir, lsr;
+
+	/* Already locked comming here in smsc_ircc_interrupt() */
+	/*spin_lock(&self->lock);*/
+
+	iobase = self->io.sir_base;
+
+	iir = inb(iobase+UART_IIR) & UART_IIR_ID;
+	if (iir == 0)
+		return IRQ_NONE;
+	while (iir) {
+		/* Clear interrupt */
+		lsr = inb(iobase+UART_LSR);
+
+		IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", 
+			    __FUNCTION__, iir, lsr, iobase);
+
+		switch (iir) {
+		case UART_IIR_RLSI:
+			IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
+			break;
+		case UART_IIR_RDI:
+			/* Receive interrupt */
+			smsc_ircc_sir_receive(self);
+			break;
+		case UART_IIR_THRI:
+			if (lsr & UART_LSR_THRE)
+				/* Transmitter ready for data */
+				smsc_ircc_sir_write_wakeup(self);
+			break;
+		default:
+			IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
+				   __FUNCTION__, iir);
+			break;
+		} 
+		
+		/* Make sure we don't stay here to long */
+		if (boguscount++ > 100)
+			break;
+
+ 	        iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+	}
+	/*spin_unlock(&self->lock);*/
+	return IRQ_HANDLED;
+}
+
+
+#if 0 /* unused */
+/*
+ * Function ircc_is_receiving (self)
+ *
+ *    Return TRUE is we are currently receiving a frame
+ *
+ */
+static int ircc_is_receiving(struct smsc_ircc_cb *self)
+{
+	int status = FALSE;
+	/* int iobase; */
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	IRDA_ASSERT(self != NULL, return FALSE;);
+
+	IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__,
+		   get_dma_residue(self->io.dma));
+
+	status = (self->rx_buff.state != OUTSIDE_FRAME);
+	
+	return status;
+}
+#endif /* unused */
+
+
+/*
+ * Function smsc_ircc_net_open (dev)
+ *
+ *    Start the device
+ *
+ */
+static int smsc_ircc_net_open(struct net_device *dev)
+{
+	struct smsc_ircc_cb *self;
+	int iobase;
+	char hwname[16];
+	unsigned long flags;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+	
+	IRDA_ASSERT(dev != NULL, return -1;);
+	self = (struct smsc_ircc_cb *) dev->priv;
+	IRDA_ASSERT(self != NULL, return 0;);
+	
+	iobase = self->io.fir_base;
+
+	if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, 
+			(void *) dev)) {
+		IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
+			   __FUNCTION__, self->io.irq);
+		return -EAGAIN;
+	}
+
+	spin_lock_irqsave(&self->lock, flags);
+	/*smsc_ircc_sir_start(self);*/
+	self->io.speed = 0;
+	smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
+	spin_unlock_irqrestore(&self->lock, flags);
+	
+	/* Give self a hardware name */
+	/* It would be cool to offer the chip revision here - Jean II */
+	sprintf(hwname, "SMSC @ 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);
+
+	/*
+	 * Always allocate the DMA channel after the IRQ,
+	 * and clean up on failure.
+	 */
+	if (request_dma(self->io.dma, dev->name)) {
+		smsc_ircc_net_close(dev);
+
+		IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
+			     __FUNCTION__, self->io.dma);
+		return -EAGAIN;
+	}
+	
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_net_close (dev)
+ *
+ *    Stop the device
+ *
+ */
+static int smsc_ircc_net_close(struct net_device *dev)
+{
+	struct smsc_ircc_cb *self;
+	int iobase;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+	
+	IRDA_ASSERT(dev != NULL, return -1;);
+	self = (struct smsc_ircc_cb *) dev->priv;	
+	IRDA_ASSERT(self != NULL, return 0;);
+	
+	iobase = self->io.fir_base;
+
+	/* Stop device */
+	netif_stop_queue(dev);
+	
+	/* Stop and remove instance of IrLAP */
+	if (self->irlap)
+		irlap_close(self->irlap);
+	self->irlap = NULL;
+
+	free_irq(self->io.irq, dev);
+
+	disable_dma(self->io.dma);
+
+	free_dma(self->io.dma);
+
+	return 0;
+}
+
+
+static void smsc_ircc_suspend(struct smsc_ircc_cb *self)
+{
+	IRDA_MESSAGE("%s, Suspending\n", driver_name);
+
+	if (self->io.suspended)
+		return;
+
+	smsc_ircc_net_close(self->netdev);
+
+	self->io.suspended = 1;
+}
+
+static void smsc_ircc_wakeup(struct smsc_ircc_cb *self)
+{
+	if (!self->io.suspended)
+		return;
+
+	/* The code was doing a "cli()" here, but this can't be right.
+	 * If you need protection, do it in net_open with a spinlock
+	 * or give a good reason. - Jean II */
+
+	smsc_ircc_net_open(self->netdev);
+	
+	IRDA_MESSAGE("%s, Waking up\n", driver_name);
+}
+
+static int smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data)
+{
+        struct smsc_ircc_cb *self = (struct smsc_ircc_cb*) dev->data;
+        if (self) {
+                switch (rqst) {
+                case PM_SUSPEND:
+                        smsc_ircc_suspend(self);
+                        break;
+                case PM_RESUME:
+                        smsc_ircc_wakeup(self);
+                        break;
+                }
+        }
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_close (self)
+ *
+ *    Close driver instance
+ *
+ */
+static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
+{
+	int iobase;
+	unsigned long flags;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	IRDA_ASSERT(self != NULL, return -1;);
+
+	iobase = self->io.fir_base;
+
+	if (self->pmdev)
+		pm_unregister(self->pmdev);
+
+	/* Remove netdevice */
+	unregister_netdev(self->netdev);
+
+	/* Make sure the irq handler is not exectuting */
+	spin_lock_irqsave(&self->lock, flags);
+
+	/* Stop interrupts */
+	register_bank(iobase, 0);
+	outb(0, iobase+IRCC_IER);
+	outb(IRCC_MASTER_RESET, iobase+IRCC_MASTER);
+	outb(0x00, iobase+IRCC_MASTER);
+#if 0
+	/* Reset to SIR mode */
+	register_bank(iobase, 1);
+        outb(IRCC_CFGA_IRDA_SIR_A|IRCC_CFGA_TX_POLARITY, iobase+IRCC_SCE_CFGA);
+        outb(IRCC_CFGB_IR, iobase+IRCC_SCE_CFGB);
+#endif
+	spin_unlock_irqrestore(&self->lock, flags);
+
+	/* Release the PORTS that this driver is using */
+	IRDA_DEBUG(0, "%s(), releasing 0x%03x\n",  __FUNCTION__,
+		   self->io.fir_base);
+
+	release_region(self->io.fir_base, self->io.fir_ext);
+
+	IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, 
+		   self->io.sir_base);
+
+	release_region(self->io.sir_base, self->io.sir_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);
+
+	free_netdev(self->netdev);
+
+	return 0;
+}
+
+static void __exit smsc_ircc_cleanup(void)
+{
+	int i;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	for (i=0; i < 2; i++) {
+		if (dev_self[i])
+			smsc_ircc_close(dev_self[i]);
+	}
+}
+
+/*
+ *	Start SIR operations
+ *
+ * This function *must* be called with spinlock held, because it may
+ * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
+ */
+void smsc_ircc_sir_start(struct smsc_ircc_cb *self)
+{
+	struct net_device *dev;
+	int fir_base, sir_base;
+
+	IRDA_DEBUG(3, "%s\n", __FUNCTION__);
+
+	IRDA_ASSERT(self != NULL, return;);	
+	dev= self->netdev;
+	IRDA_ASSERT(dev != NULL, return;);		
+	dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir;
+
+	fir_base = self->io.fir_base;
+	sir_base = self->io.sir_base;
+
+	/* Reset everything */
+	outb(IRCC_MASTER_RESET, fir_base+IRCC_MASTER);
+
+	#if SMSC_IRCC2_C_SIR_STOP
+	/*smsc_ircc_sir_stop(self);*/
+	#endif
+
+	register_bank(fir_base, 1);
+	outb(((inb(fir_base+IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base+IRCC_SCE_CFGA);
+
+	/* Initialize UART */
+	outb(UART_LCR_WLEN8, sir_base+UART_LCR);  /* Reset DLAB */
+	outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base+UART_MCR);
+	
+	/* Turn on interrups */
+	outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base+UART_IER);
+
+	IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__);
+
+	outb(0x00, fir_base+IRCC_MASTER);
+}
+
+#if SMSC_IRCC2_C_SIR_STOP
+void smsc_ircc_sir_stop(struct smsc_ircc_cb *self)
+{
+	int iobase;
+
+	IRDA_DEBUG(3, "%s\n", __FUNCTION__);
+	iobase = self->io.sir_base;
+
+	/* Reset UART */
+	outb(0, iobase+UART_MCR);
+	
+	/* Turn off interrupts */
+	outb(0, iobase+UART_IER);
+}
+#endif
+
+/*
+ * Function smsc_sir_write_wakeup (self)
+ *
+ *    Called by the SIR interrupt handler when there's room for more data.
+ *    If we have more packets to send, we send them here.
+ *
+ */
+static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self)
+{
+	int actual = 0;
+	int iobase;
+	int fcr;
+
+	IRDA_ASSERT(self != NULL, return;);
+
+	IRDA_DEBUG(4, "%s\n", __FUNCTION__);
+
+	iobase = self->io.sir_base;
+
+	/* Finished with frame?  */
+	if (self->tx_buff.len > 0)  {
+		/* Write data left in transmit buffer */
+		actual = smsc_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->tx_buff.len ==0)  {*/
+		
+		/* 
+		 *  Now serial buffer is almost free & we can start 
+		 *  transmission of another packet. But first we must check
+		 *  if we need to change the speed of the hardware
+		 */
+		if (self->new_speed) {
+			IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
+				   __FUNCTION__, self->new_speed);
+			smsc_ircc_sir_wait_hw_transmitter_finish(self);
+			smsc_ircc_change_speed(self, self->new_speed);
+			self->new_speed = 0;
+		} else {
+			/* Tell network layer that we want more frames */
+			netif_wake_queue(self->netdev);
+		}
+		self->stats.tx_packets++;
+
+		if(self->io.speed <= 115200) {
+		/* 
+		 * Reset Rx FIFO to make sure that all reflected transmit data
+		 * is discarded. This is needed for half duplex operation
+		 */
+		fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR;
+		if (self->io.speed < 38400)
+			fcr |= UART_FCR_TRIGGER_1;
+		else 
+			fcr |= UART_FCR_TRIGGER_14;
+
+		outb(fcr, iobase+UART_FCR);
+
+		/* Turn on receive interrupts */
+		outb(UART_IER_RDI, iobase+UART_IER);
+		}
+	}
+}
+
+/*
+ * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
+ *
+ *    Fill Tx FIFO with transmit data
+ *
+ */
+static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
+{
+	int actual = 0;
+	
+	/* Tx FIFO should be empty! */
+	if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
+		IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__);
+		return 0;
+	}
+        
+	/* Fill FIFO with current frame */
+	while ((fifo_size-- > 0) && (actual < len)) {
+		/* Transmit next byte */
+		outb(buf[actual], iobase+UART_TX);
+		actual++;
+	}
+	return actual;
+}
+
+/*
+ * Function smsc_ircc_is_receiving (self)
+ *
+ *    Returns true is we are currently receiving data
+ *
+ */
+static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
+{
+	return (self->rx_buff.state != OUTSIDE_FRAME);
+}
+
+
+/*
+ * Function smsc_ircc_probe_transceiver(self)
+ *
+ *    Tries to find the used Transceiver
+ *
+ */
+static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self)
+{
+	unsigned int	i;
+	
+	IRDA_ASSERT(self != NULL, return;);
+	
+	for(i=0; smsc_transceivers[i].name!=NULL; i++) 
+		if((*smsc_transceivers[i].probe)(self->io.fir_base)) {
+			IRDA_MESSAGE(" %s transceiver found\n",
+				     smsc_transceivers[i].name);
+			self->transceiver= i+1;
+			return;
+		}
+	IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
+		     smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name);
+			
+	self->transceiver= SMSC_IRCC2_C_DEFAULT_TRANSCEIVER;
+}
+
+
+/*
+ * Function smsc_ircc_set_transceiver_for_speed(self, speed)
+ *
+ *    Set the transceiver according to the speed
+ *
+ */
+static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed)
+{
+	unsigned int trx;
+	
+	trx = self->transceiver;
+	if(trx>0) (*smsc_transceivers[trx-1].set_for_speed)(self->io.fir_base, speed);
+}
+
+/*
+ * Function smsc_ircc_wait_hw_transmitter_finish ()
+ *
+ *    Wait for the real end of HW transmission
+ *
+ * The UART is a strict FIFO, and we get called only when we have finished
+ * pushing data to the FIFO, so the maximum amount of time we must wait
+ * is only for the FIFO to drain out.
+ *
+ * We use a simple calibrated loop. We may need to adjust the loop
+ * delay (udelay) to balance I/O traffic and latency. And we also need to
+ * adjust the maximum timeout.
+ * It would probably be better to wait for the proper interrupt,
+ * but it doesn't seem to be available.
+ *
+ * We can't use jiffies or kernel timers because :
+ * 1) We are called from the interrupt handler, which disable softirqs,
+ * so jiffies won't be increased
+ * 2) Jiffies granularity is usually very coarse (10ms), and we don't
+ * want to wait that long to detect stuck hardware.
+ * Jean II
+ */
+
+static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self)
+{
+	int iobase;
+	int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US;
+	
+	iobase = self->io.sir_base;
+	
+	/* Calibrated busy loop */
+	while((count-- > 0) && !(inb(iobase+UART_LSR) & UART_LSR_TEMT))
+		udelay(1);
+
+	if(count == 0)
+		IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__);
+}
+
+
+/* PROBING
+ *
+ *
+ */
+
+static int __init smsc_ircc_look_for_chips(void)
+{
+	smsc_chip_address_t *address;
+	char	*type;
+	unsigned int cfg_base, found;
+	
+	found = 0;
+	address = possible_addresses;
+	
+	while(address->cfg_base){
+		cfg_base = address->cfg_base;
+		
+		/*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __FUNCTION__, cfg_base, address->type);*/
+		
+		if( address->type & SMSCSIO_TYPE_FDC){
+			type = "FDC";
+			if((address->type) & SMSCSIO_TYPE_FLAT) {
+				if(!smsc_superio_flat(fdc_chips_flat,cfg_base, type)) found++;
+			}
+			if((address->type) & SMSCSIO_TYPE_PAGED) {
+				if(!smsc_superio_paged(fdc_chips_paged,cfg_base, type)) found++;		
+			}			
+		}
+		if( address->type & SMSCSIO_TYPE_LPC){
+			type = "LPC";
+			if((address->type) & SMSCSIO_TYPE_FLAT) {
+				if(!smsc_superio_flat(lpc_chips_flat,cfg_base,type)) found++;
+			}
+			if((address->type) & SMSCSIO_TYPE_PAGED) {
+				if(!smsc_superio_paged(lpc_chips_paged,cfg_base,"LPC")) found++;		
+			}			
+		}
+		address++;
+	}
+	return found;
+} 
+
+/*
+ * Function smsc_superio_flat (chip, base, type)
+ *
+ *    Try to get configuration of a smc SuperIO chip with flat register model
+ *
+ */
+static int __init smsc_superio_flat(const smsc_chip_t *chips, unsigned short cfgbase, char *type)
+{
+	unsigned short firbase, sirbase;
+	u8 mode, dma, irq;
+	int ret = -ENODEV;
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type)==NULL)
+		return ret;
+
+	outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase);
+	mode = inb(cfgbase+1);
+	
+	/*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/
+	
+	if(!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA))
+		IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__);
+
+	outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase);
+	sirbase = inb(cfgbase+1) << 2;
+
+   	/* FIR iobase */
+	outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase);
+	firbase = inb(cfgbase+1) << 3;
+
+	/* DMA */
+	outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase);
+	dma = inb(cfgbase+1) & SMSCSIOFLAT_FIRDMASELECT_MASK;
+	
+	/* IRQ */
+	outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase);
+	irq = inb(cfgbase+1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
+
+	IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode);
+
+	if (firbase) {
+		if (smsc_ircc_open(firbase, sirbase, dma, irq) == 0)
+			ret=0; 
+	}
+	
+	/* Exit configuration */
+	outb(SMSCSIO_CFGEXITKEY, cfgbase);
+
+	return ret;
+}
+
+/*
+ * Function smsc_superio_paged (chip, base, type)
+ *
+ *    Try  to get configuration of a smc SuperIO chip with paged register model
+ *
+ */
+static int __init smsc_superio_paged(const smsc_chip_t *chips, unsigned short cfg_base, char *type)
+{
+	unsigned short fir_io, sir_io;
+	int ret = -ENODEV;
+	
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	if (smsc_ircc_probe(cfg_base,0x20,chips,type)==NULL)
+		return ret;
+	
+	/* Select logical device (UART2) */
+	outb(0x07, cfg_base);
+	outb(0x05, cfg_base + 1);
+		
+	/* SIR iobase */
+	outb(0x60, cfg_base);
+	sir_io  = inb(cfg_base + 1) << 8;
+	outb(0x61, cfg_base);
+	sir_io |= inb(cfg_base + 1);
+		
+	/* Read FIR base */
+	outb(0x62, cfg_base);
+	fir_io = inb(cfg_base + 1) << 8;
+	outb(0x63, cfg_base);
+	fir_io |= inb(cfg_base + 1);
+	outb(0x2b, cfg_base); /* ??? */
+
+	if (fir_io) {
+		if (smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0)
+			ret=0; 
+	}
+	
+	/* Exit configuration */
+	outb(SMSCSIO_CFGEXITKEY, cfg_base);
+
+	return ret;
+}
+
+
+static int __init smsc_access(unsigned short cfg_base,unsigned char reg)
+{
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	outb(reg, cfg_base);
+
+	if (inb(cfg_base)!=reg)
+		return -1;
+
+	return 0;
+}
+
+static const smsc_chip_t * __init smsc_ircc_probe(unsigned short cfg_base,u8 reg,const smsc_chip_t *chip,char *type)
+{
+	u8 devid,xdevid,rev; 
+
+	IRDA_DEBUG(1, "%s\n", __FUNCTION__);
+
+	/* Leave configuration */
+
+	outb(SMSCSIO_CFGEXITKEY, cfg_base);
+
+	if (inb(cfg_base) == SMSCSIO_CFGEXITKEY)	/* not a smc superio chip */
+		return NULL;
+
+	outb(reg, cfg_base);
+
+	xdevid=inb(cfg_base+1);
+
+	/* Enter configuration */
+
+	outb(SMSCSIO_CFGACCESSKEY, cfg_base);
+
+	#if 0
+	if (smsc_access(cfg_base,0x55))	/* send second key and check */
+		return NULL;
+	#endif
+	
+	/* probe device ID */
+
+	if (smsc_access(cfg_base,reg))
+		return NULL;
+
+	devid=inb(cfg_base+1);
+	
+	if (devid==0)			/* typical value for unused port */
+		return NULL;
+
+	if (devid==0xff)		/* typical value for unused port */
+		return NULL;
+
+	/* probe revision ID */
+
+	if (smsc_access(cfg_base,reg+1))
+		return NULL;
+
+	rev=inb(cfg_base+1);
+
+	if (rev>=128)			/* i think this will make no sense */
+		return NULL;
+
+	if (devid==xdevid)		/* protection against false positives */        
+		return NULL;
+
+	/* Check for expected device ID; are there others? */
+
+	while(chip->devid!=devid) {
+
+		chip++;
+
+		if (chip->name==NULL)
+			return NULL;
+	}
+
+	IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",devid,rev,cfg_base,type,chip->name);
+
+	if (chip->rev>rev){
+		IRDA_MESSAGE("Revision higher than expected\n");	
+		return NULL;
+	}
+	
+	if (chip->flags&NoIRDA)
+		IRDA_MESSAGE("chipset does not support IRDA\n");
+
+	return chip;
+}
+
+static int __init smsc_superio_fdc(unsigned short cfg_base)
+{
+	int ret = -1;
+
+	if (!request_region(cfg_base, 2, driver_name)) {
+		IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
+			     __FUNCTION__, cfg_base);
+	} else {
+		if (!smsc_superio_flat(fdc_chips_flat,cfg_base,"FDC")
+		    ||!smsc_superio_paged(fdc_chips_paged,cfg_base,"FDC"))
+			ret =  0;
+
+		release_region(cfg_base, 2);
+	}
+
+	return ret;
+}
+
+static int __init smsc_superio_lpc(unsigned short cfg_base)
+{
+	int ret = -1;
+
+	if (!request_region(cfg_base, 2, driver_name)) {
+		IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
+			     __FUNCTION__, cfg_base);
+	} else {
+		if (!smsc_superio_flat(lpc_chips_flat,cfg_base,"LPC")
+		    ||!smsc_superio_paged(lpc_chips_paged,cfg_base,"LPC"))
+			ret = 0;
+		release_region(cfg_base, 2);
+	}
+	return ret;
+}
+
+/************************************************
+ *
+ * Transceivers specific functions
+ *
+ ************************************************/
+
+
+/*
+ * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
+ *
+ *    Program transceiver through smsc-ircc ATC circuitry
+ *
+ */
+
+static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed)
+{
+	unsigned long jiffies_now, jiffies_timeout;
+	u8	val;
+	
+	jiffies_now= jiffies;
+	jiffies_timeout= jiffies+SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES;
+	
+	/* ATC */
+	register_bank(fir_base, 4);
+	outb((inb(fir_base+IRCC_ATC) & IRCC_ATC_MASK) |IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, fir_base+IRCC_ATC);
+	while((val=(inb(fir_base+IRCC_ATC) & IRCC_ATC_nPROGREADY)) && !time_after(jiffies, jiffies_timeout));
+	if(val)
+		IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__,
+			     inb(fir_base+IRCC_ATC));
+}
+
+/*
+ * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
+ *
+ *    Probe transceiver smsc-ircc ATC circuitry
+ *
+ */
+
+static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base)
+{
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
+ *
+ *    Set transceiver 
+ *
+ */
+
+static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed)
+{
+	u8	fast_mode;
+	
+	switch(speed)
+	{
+		default:
+		case 576000 :
+		fast_mode = 0; 
+		break;
+		case 1152000 :
+		case 4000000 :
+		fast_mode = IRCC_LCR_A_FAST;
+		break;
+		
+	}
+	register_bank(fir_base, 0);
+	outb((inb(fir_base+IRCC_LCR_A) &  0xbf) | fast_mode, fir_base+IRCC_LCR_A);
+}
+
+/*
+ * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
+ *
+ *    Probe transceiver 
+ *
+ */
+
+static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base)
+{
+	return 0;
+}
+
+/*
+ * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
+ *
+ *    Set transceiver 
+ *
+ */
+
+static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed)
+{
+	u8	fast_mode;
+	
+	switch(speed)
+	{
+		default:
+		case 576000 :
+		fast_mode = 0; 
+		break;
+		case 1152000 :
+		case 4000000 :
+		fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA;
+		break;
+		
+	}
+	/* This causes an interrupt */
+	register_bank(fir_base, 0);
+	outb((inb(fir_base+IRCC_LCR_A) &  0xbf) | fast_mode, fir_base+IRCC_LCR_A);
+}
+
+/*
+ * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
+ *
+ *    Probe transceiver 
+ *
+ */
+
+static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base)
+{
+	return 0;
+}
+
+
+module_init(smsc_ircc_init);
+module_exit(smsc_ircc_cleanup);
+
+MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
+MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
+MODULE_LICENSE("GPL");
+
+module_param(ircc_dma, int, 0);
+MODULE_PARM_DESC(ircc_dma, "DMA channel");
+module_param(ircc_irq, int, 0);
+MODULE_PARM_DESC(ircc_irq, "IRQ line");
+module_param(ircc_fir, int, 0);
+MODULE_PARM_DESC(ircc_fir, "FIR Base Address");
+module_param(ircc_sir, int, 0);
+MODULE_PARM_DESC(ircc_sir, "SIR Base Address");
+module_param(ircc_cfg, int, 0);
+MODULE_PARM_DESC(ircc_cfg, "Configuration register base address");
+module_param(ircc_transceiver, int, 0);
+MODULE_PARM_DESC(ircc_transceiver, "Transceiver type");