patch-2.4.25 linux-2.4.25/drivers/net/irda/via-ircc.c
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- Lines: 1653
- Date:
2004-02-18 05:36:31.000000000 -0800
- Orig file:
linux-2.4.24/drivers/net/irda/via-ircc.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.24/drivers/net/irda/via-ircc.c linux-2.4.25/drivers/net/irda/via-ircc.c
@@ -0,0 +1,1652 @@
+/********************************************************************
+ Filename: via-ircc.c
+ Version: 1.0
+ Description: Driver for the VIA VT8231/VT8233 IrDA chipsets
+ Author: VIA Technologies,inc
+ Date : 08/06/2003
+
+Copyright (c) 1998-2003 VIA Technologies, Inc.
+
+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, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTIES OR REPRESENTATIONS; 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.
+
+F01 Oct/02/02: Modify code for V0.11(move out back to back transfer)
+F02 Oct/28/02: Add SB device ID for 3147 and 3177.
+ Comment :
+ jul/09/2002 : only implement two kind of dongle currently.
+ Oct/02/2002 : work on VT8231 and VT8233 .
+ Aug/06/2003 : change driver format to pci driver .
+
+ ********************************************************************/
+#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/pci.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+
+#include <linux/pm.h>
+
+#include <net/irda/wrapper.h>
+#include <net/irda/irda.h>
+#include <net/irda/irda_device.h>
+
+#include "via-ircc.h"
+
+//#define DBG_IO 1
+//#define DBGMSG 1
+//#define DBGMSG_96 1
+//#define DBGMSG_76 1
+//static int debug=0;
+
+
+#define DBG(x) {if (debug) x;}
+
+#define VIA_MODULE_NAME "via-ircc"
+#define CHIP_IO_EXTENT 8
+#define BROKEN_DONGLE_ID
+
+static char *driver_name = "via-ircc";
+
+/* Module parameters */
+static int qos_mtt_bits = 0x07; /* 1 ms or more */
+static int dongle_id = 9; //defalut IBM type
+
+/* Resource is allocate by BIOS user only need to supply dongle_id*/
+MODULE_PARM(dongle_id, "i");
+
+/* Max 4 instances for now */
+static struct via_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
+
+/* Some prototypes */
+static int via_ircc_open(int i, chipio_t * info, unsigned int id);
+static int via_ircc_close(struct via_ircc_cb *self);
+static int via_ircc_setup(chipio_t * info, unsigned int id);
+static int via_ircc_dma_receive(struct via_ircc_cb *self);
+static int via_ircc_dma_receive_complete(struct via_ircc_cb *self,
+ int iobase);
+static int via_ircc_hard_xmit_sir(struct sk_buff *skb,
+ struct net_device *dev);
+static int via_ircc_hard_xmit_fir(struct sk_buff *skb,
+ struct net_device *dev);
+static void via_ircc_change_speed(struct via_ircc_cb *self, __u32 baud);
+static irqreturn_t via_ircc_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs);
+static int via_ircc_is_receiving(struct via_ircc_cb *self);
+static int via_ircc_read_dongle_id(int iobase);
+
+static int via_ircc_net_init(struct net_device *dev);
+static int via_ircc_net_open(struct net_device *dev);
+static int via_ircc_net_close(struct net_device *dev);
+static int via_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq,
+ int cmd);
+static struct net_device_stats *via_ircc_net_get_stats(struct net_device
+ *dev);
+static void via_ircc_change_dongle_speed(int iobase, int speed,
+ int dongle_id);
+static int RxTimerHandler(struct via_ircc_cb *self, int iobase);
+void hwreset(struct via_ircc_cb *self);
+static int via_ircc_dma_xmit(struct via_ircc_cb *self, u16 iobase);
+static int upload_rxdata(struct via_ircc_cb *self, int iobase);
+static int via_init_one (struct pci_dev *pcidev, const struct pci_device_id *id);
+static void via_remove_one (struct pci_dev *pdev);
+
+/* Should use udelay() instead, even if we are x86 only - Jean II */
+void iodelay(int udelay)
+{
+ u8 data;
+ int i;
+
+ for (i = 0; i < udelay; i++) {
+ data = inb(0x80);
+ }
+}
+
+static struct pci_device_id via_pci_tbl[] = {
+ { PCI_VENDOR_ID_VIA, DeviceID1, PCI_ANY_ID, PCI_ANY_ID,0,0,0 },
+ { PCI_VENDOR_ID_VIA, DeviceID2, PCI_ANY_ID, PCI_ANY_ID,0,0,1 },
+ { PCI_VENDOR_ID_VIA, DeviceID3, PCI_ANY_ID, PCI_ANY_ID,0,0,2 },
+ { PCI_VENDOR_ID_VIA, DeviceID4, PCI_ANY_ID, PCI_ANY_ID,0,0,3 },
+ { PCI_VENDOR_ID_VIA, DeviceID5, PCI_ANY_ID, PCI_ANY_ID,0,0,4 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci,via_pci_tbl);
+
+
+static struct pci_driver via_driver = {
+ .name = VIA_MODULE_NAME,
+ .id_table = via_pci_tbl,
+ .probe = via_init_one,
+ .remove = __devexit_p(via_remove_one),
+};
+
+
+/*
+ * Function via_ircc_init ()
+ *
+ * Initialize chip. Just find out chip type and resource.
+ */
+static int __devinit via_ircc_init(void)
+{
+ int rc;
+
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_ircc_init ......\n"));
+#endif
+ rc = pci_register_driver (&via_driver);
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_ircc_init :rc = %d......\n",rc));
+#endif
+ if (rc < 1) {
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_ircc_init return -ENODEV......\n"));
+#endif
+ if (rc == 0) pci_unregister_driver (&via_driver);
+ return -ENODEV;
+ }
+ return 0;
+
+}
+
+static int __devinit via_init_one (struct pci_dev *pcidev, const struct pci_device_id *id)
+{
+ int rc;
+ u8 temp,oldPCI_40,oldPCI_44,bTmp,bTmp1;
+ u16 Chipset,FirDRQ1,FirDRQ0,FirIRQ,FirIOBase;
+ chipio_t info;
+
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one : Device ID=(0X%X)\n",id->device));
+#endif
+ if(id->device != DeviceID1 && id->device != DeviceID2 &&
+ id->device != DeviceID3 && id->device != DeviceID4 &&
+ id->device != DeviceID5 ){
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one : Device ID(0X%X) not Supported\n",id->device));
+#endif
+ return -ENODEV; //South not exist !!!!!
+ }
+ rc = pci_enable_device (pcidev);
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one : rc=%d\n",rc));
+#endif
+ if (rc)
+ return -ENODEV;
+ //South Bridge exist
+ if ( ReadLPCReg(0x20) != 0x3C )
+ Chipset=0x3096;
+ else
+ Chipset=0x3076;
+ if (Chipset==0x3076) {
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one : 3076 ......\n"));
+#endif
+ WriteLPCReg(7,0x0c );
+ temp=ReadLPCReg(0x30);//check if BIOS Enable Fir
+ if((temp&0x01)==1) { // BIOS close or no FIR
+ WriteLPCReg(0x1d, 0x82 );
+ WriteLPCReg(0x23,0x18);
+ temp=ReadLPCReg(0xF0);
+ if((temp&0x01)==0) {
+ temp=(ReadLPCReg(0x74)&0x03); //DMA
+ FirDRQ0=temp + 4;
+ temp=(ReadLPCReg(0x74)&0x0C) >> 2;
+ FirDRQ1=temp + 4;
+ } else {
+ temp=(ReadLPCReg(0x74)&0x0C) >> 2; //DMA
+ FirDRQ0=temp + 4;
+ FirDRQ1=FirDRQ0;
+ }
+ FirIRQ=(ReadLPCReg(0x70)&0x0f); //IRQ
+ FirIOBase=ReadLPCReg(0x60 ) << 8; //IO Space :high byte
+ FirIOBase=FirIOBase| ReadLPCReg(0x61) ; //low byte
+ FirIOBase=FirIOBase ;
+ info.fir_base=FirIOBase;
+ info.irq=FirIRQ;
+ info.dma=FirDRQ1;
+ info.dma2=FirDRQ0;
+ pci_read_config_byte(pcidev,0x40,&bTmp);
+ pci_write_config_byte(pcidev,0x40,((bTmp | 0x08) & 0xfe));
+ pci_read_config_byte(pcidev,0x42,&bTmp);
+ pci_write_config_byte(pcidev,0x42,(bTmp | 0xf0));
+ pci_write_config_byte(pcidev,0x5a,0xc0);
+ WriteLPCReg(0x28, 0x70 );
+ if (via_ircc_open(0, &info,0x3076) == 0)
+ rc=0;
+ } else
+ rc = -ENODEV; //IR not turn on
+ } else { //Not VT1211
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one : 3096 ......\n"));
+#endif
+ pci_read_config_byte(pcidev,0x67,&bTmp);//check if BIOS Enable Fir
+ if((bTmp&0x01)==1) { // BIOS enable FIR
+ //Enable Double DMA clock
+ pci_read_config_byte(pcidev,0x42,&oldPCI_40);
+ pci_write_config_byte(pcidev,0x42,oldPCI_40 | 0x80);
+ pci_read_config_byte(pcidev,0x40,&oldPCI_40);
+ pci_write_config_byte(pcidev,0x40,oldPCI_40 & 0xf7);
+ pci_read_config_byte(pcidev,0x44,&oldPCI_44);
+ pci_write_config_byte(pcidev,0x44,0x4e);
+ //---------- read configuration from Function0 of south bridge
+ if((bTmp&0x02)==0) {
+ pci_read_config_byte(pcidev,0x44,&bTmp1); //DMA
+ FirDRQ0 = (bTmp1 & 0x30) >> 4;
+ pci_read_config_byte(pcidev,0x44,&bTmp1);
+ FirDRQ1 = (bTmp1 & 0xc0) >> 6;
+ } else {
+ pci_read_config_byte(pcidev,0x44,&bTmp1); //DMA
+ FirDRQ0 = (bTmp1 & 0x30) >> 4 ;
+ FirDRQ1=0;
+ }
+ pci_read_config_byte(pcidev,0x47,&bTmp1); //IRQ
+ FirIRQ = bTmp1 & 0x0f;
+
+ pci_read_config_byte(pcidev,0x69,&bTmp);
+ FirIOBase = bTmp << 8;//hight byte
+ pci_read_config_byte(pcidev,0x68,&bTmp);
+ FirIOBase = (FirIOBase | bTmp ) & 0xfff0;
+ //-------------------------
+ info.fir_base=FirIOBase;
+ info.irq=FirIRQ;
+ info.dma=FirDRQ1;
+ info.dma2=FirDRQ0;
+ if (via_ircc_open(0, &info,0x3096) == 0)
+ rc=0;
+ } else
+ rc = -ENODEV; //IR not turn on !!!!!
+ }//Not VT1211
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_init_one End : rc=%d\n",rc));
+#endif
+ return rc;
+}
+
+/*
+ * Function via_ircc_clean ()
+ *
+ * Close all configured chips
+ *
+ */
+static void __devexit via_ircc_clean(void)
+{
+ int i;
+
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_ircc_clean\n"));
+#endif
+ for (i=0; i < 4; i++) {
+ if (dev_self[i])
+ via_ircc_close(dev_self[i]);
+ }
+}
+
+static void __devexit via_remove_one (struct pci_dev *pdev)
+{
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_remove_one : ......\n"));
+#endif
+ via_ircc_clean();
+
+}
+
+static void __devexit via_ircc_cleanup(void)
+{
+
+#ifdef HEADMSG
+ DBG(printk(KERN_INFO "via_ircc_cleanup ......\n"));
+#endif
+ via_ircc_clean();
+ pci_unregister_driver (&via_driver);
+}
+
+/*
+ * Function via_ircc_open (iobase, irq)
+ *
+ * Open driver instance
+ *
+ */
+static __devinit int via_ircc_open(int i, chipio_t * info, unsigned int id)
+{
+ struct net_device *dev;
+ struct via_ircc_cb *self;
+ int err;
+
+ if ((via_ircc_setup(info, id)) == -1)
+ return -1;
+
+ /* Allocate new instance of the driver */
+ self = kmalloc(sizeof(struct via_ircc_cb), GFP_KERNEL);
+ if (self == NULL) {
+ return -ENOMEM;
+ }
+ memset(self, 0, sizeof(struct via_ircc_cb));
+ spin_lock_init(&self->lock);
+
+ /* Need to store self somewhere */
+ dev_self[i] = self;
+ self->index = i;
+ /* Initialize Resource */
+ self->io.cfg_base = info->cfg_base;
+ self->io.fir_base = info->fir_base;
+ self->io.irq = info->irq;
+ self->io.fir_ext = CHIP_IO_EXTENT;
+ self->io.dma = info->dma;
+ self->io.dma2 = info->dma2;
+ self->io.fifo_size = 32;
+ self->chip_id = id;
+ self->st_fifo.len = 0;
+ self->RxDataReady = 0;
+
+ /* Reserve the ioports that we need */
+ if (!request_region(self->io.fir_base, self->io.fir_ext, driver_name)) {
+// WARNING(__FUNCTION__ "(), can't get iobase of 0x%03x\n",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;// May use this for testing
+
+ 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 = qos_mtt_bits;
+ irda_qos_bits_to_value(&self->qos);
+
+ self->flags =
+ IFF_FIR | IFF_MIR | IFF_SIR | IFF_DMA | IFF_PIO | IFF_DONGLE;
+
+ /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
+ self->rx_buff.truesize = 14384 + 2048;
+ self->tx_buff.truesize = 14384 + 2048;
+
+ /* Allocate memory if needed */
+ self->rx_buff.head =
+ (__u8 *) kmalloc(self->rx_buff.truesize, GFP_KERNEL | GFP_DMA);
+ 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 =
+ (__u8 *) kmalloc(self->tx_buff.truesize, GFP_KERNEL | GFP_DMA);
+ 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;
+
+ if (!(dev = dev_alloc("irda%d", &err))) {
+ err = -ENOMEM;
+ goto err_out4;
+ }
+
+ dev->priv = (void *) self;
+ self->netdev = dev;
+
+ /* Override the network functions we need to use */
+ dev->init = via_ircc_net_init;
+ dev->hard_start_xmit = via_ircc_hard_xmit_sir;
+ dev->open = via_ircc_net_open;
+ dev->stop = via_ircc_net_close;
+ dev->do_ioctl = via_ircc_net_ioctl;
+ dev->get_stats = via_ircc_net_get_stats;
+
+ rtnl_lock();
+ err = register_netdevice(dev);
+ rtnl_unlock();
+ if (err)
+ goto err_out4;
+
+ MESSAGE("IrDA: Registered device %s\n", dev->name);
+
+ /* Check if user has supplied the dongle id or not */
+ if (!dongle_id)
+ dongle_id = via_ircc_read_dongle_id(self->io.fir_base);
+ self->io.dongle_id = dongle_id;
+ via_ircc_change_dongle_speed(self->io.fir_base, 9600,
+ self->io.dongle_id);
+
+ return 0;
+ err_out4:
+ kfree(self->tx_buff.head);
+ err_out3:
+ kfree(self->rx_buff.head);
+ err_out2:
+ release_region(self->io.fir_base, self->io.fir_ext);
+ err_out1:
+ kfree(self);
+ dev_self[i] = NULL;
+ return err;
+}
+
+/*
+ * Function via_ircc_close (self)
+ *
+ * Close driver instance
+ *
+ */
+static int __devexit via_ircc_close(struct via_ircc_cb *self)
+{
+ int iobase;
+
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ ASSERT(self != NULL, return -1;);
+
+ iobase = self->io.fir_base;
+
+ ResetChip(iobase, 5); //hardware reset.
+ /* Remove netdevice */
+ if (self->netdev) {
+ rtnl_lock();
+ unregister_netdevice(self->netdev);
+ rtnl_unlock();
+ }
+
+ /* Release the PORT that this driver is using */
+ IRDA_DEBUG(4, "%s(), Releasing Region %03x\n",
+ __FUNCTION__, self->io.fir_base);
+ release_region(self->io.fir_base, self->io.fir_ext);
+ if (self->tx_buff.head)
+ kfree(self->tx_buff.head);
+ if (self->rx_buff.head)
+ kfree(self->rx_buff.head);
+ dev_self[self->index] = NULL;
+ kfree(self);
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_setup (info)
+ *
+ * Returns non-negative on success.
+ *
+ */
+static int via_ircc_setup(chipio_t * info, unsigned int chip_id)
+{
+ int iobase = info->fir_base;
+
+ SetMaxRxPacketSize(iobase, 0x0fff); //set to max:4095
+ // FIFO Init
+ EnRXFIFOReadyInt(iobase, OFF);
+ EnRXFIFOHalfLevelInt(iobase, OFF);
+ EnTXFIFOHalfLevelInt(iobase, OFF);
+ EnTXFIFOUnderrunEOMInt(iobase, ON);
+ EnTXFIFOReadyInt(iobase, OFF);
+ InvertTX(iobase, OFF);
+ InvertRX(iobase, OFF);
+ if (ReadLPCReg(0x20) == 0x3c)
+ WriteLPCReg(0xF0, 0); // for VT1211
+ if (IsSIROn(iobase)) {
+ SIRFilter(iobase, ON);
+ SIRRecvAny(iobase, ON);
+ } else {
+ SIRFilter(iobase, OFF);
+ SIRRecvAny(iobase, OFF);
+ }
+ //Int Init
+ EnRXSpecInt(iobase, ON);
+ //DMA Init Later....
+ WriteReg(iobase, I_ST_CT_0, 0x80);
+ EnableDMA(iobase, ON);
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_read_dongle_id (void)
+ *
+ */
+static int via_ircc_read_dongle_id(int iobase)
+{
+ int dongle_id = 9;
+
+ return dongle_id;
+}
+
+/*
+ * Function via_ircc_change_dongle_speed (iobase, speed, dongle_id)
+ * Change speed of the attach dongle
+ * only implement two type of dongle currently.
+ */
+static void via_ircc_change_dongle_speed(int iobase, int speed,
+ int dongle_id)
+{
+ u8 mode = 0;
+
+ WriteReg(iobase, I_ST_CT_0, 0x0);
+ switch (dongle_id) { //HP1100
+ case 0x00: /* same as */
+ case 0x01: /* Differential serial interface */
+ break;
+ case 0x02: /* same as */
+ case 0x03: /* Reserved */
+ break;
+ case 0x04: /* Sharp RY5HD01 */
+ break;
+ case 0x05: /* Reserved, but this is what the Thinkpad reports */
+ break;
+ case 0x06: /* Single-ended serial interface */
+ break;
+ case 0x07: /* Consumer-IR only */
+ break;
+
+ case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */
+ UseOneRX(iobase, ON); // use one RX pin RX1,RX2
+ InvertTX(iobase, OFF);
+ InvertRX(iobase, OFF);
+
+ EnRX2(iobase, ON); //sir to rx2
+ EnGPIOtoRX2(iobase, OFF);
+
+ if (IsSIROn(iobase)) { //sir
+ // Mode select Off
+ SlowIRRXLowActive(iobase, ON);
+ udelay(1000);
+ SlowIRRXLowActive(iobase, OFF);
+ } else {
+ if (IsMIROn(iobase)) { //mir
+ // Mode select On
+ SlowIRRXLowActive(iobase, OFF);
+ udelay(20);
+ } else { // fir
+ if (IsFIROn(iobase)) { //fir
+ // Mode select On
+ SlowIRRXLowActive(iobase, OFF);
+ udelay(20);
+ }
+ }
+ }
+ break;
+ case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */
+ UseOneRX(iobase, ON); //use ONE RX....RX1
+ InvertTX(iobase, OFF);
+ InvertRX(iobase, OFF); // invert RX pin
+ EnRX2(iobase, ON);
+ EnGPIOtoRX2(iobase, OFF);
+ if (IsSIROn(iobase)) { //sir
+ // Mode select On
+ SlowIRRXLowActive(iobase, ON);
+ udelay(20);
+ // Mode select Off
+ SlowIRRXLowActive(iobase, OFF);
+ }
+ if (IsMIROn(iobase)) { //mir
+ // Mode select On
+ SlowIRRXLowActive(iobase, OFF);
+ udelay(20);
+ // Mode select Off
+ SlowIRRXLowActive(iobase, ON);
+ } else { // fir
+ if (IsFIROn(iobase)) { //fir
+ // Mode select On
+ SlowIRRXLowActive(iobase, OFF);
+ // TX On
+ WriteTX(iobase, ON);
+ udelay(20);
+ // Mode select OFF
+ SlowIRRXLowActive(iobase, ON);
+ udelay(20);
+ // TX Off
+ WriteTX(iobase, OFF);
+ }
+ }
+ break;
+ case 0x0d:
+ UseOneRX(iobase, OFF); // use two RX pin RX1,RX2
+ InvertTX(iobase, OFF);
+ InvertRX(iobase, OFF);
+ SlowIRRXLowActive(iobase, OFF);
+ if (IsSIROn(iobase)) { //sir
+ EnGPIOtoRX2(iobase, OFF);
+ WriteGIO(iobase, OFF);
+ EnRX2(iobase, OFF); //sir to rx2
+ } else { // fir mir
+ EnGPIOtoRX2(iobase, OFF);
+ WriteGIO(iobase, OFF);
+ EnRX2(iobase, OFF); //fir to rx
+ }
+ break;
+ case 0x0ff: /* Vishay */
+ if (IsSIROn(iobase))
+ mode = 0;
+ else if (IsMIROn(iobase))
+ mode = 1;
+ else if (IsFIROn(iobase))
+ mode = 2;
+ else if (IsVFIROn(iobase))
+ mode = 5; //VFIR-16
+ SI_SetMode(iobase, mode);
+ }
+ WriteReg(iobase, I_ST_CT_0, 0x80);
+
+}
+
+/*
+ * Function via_ircc_change_speed (self, baud)
+ *
+ * Change the speed of the device
+ *
+ */
+static void via_ircc_change_speed(struct via_ircc_cb *self, __u32 speed)
+{
+ struct net_device *dev = self->netdev;
+ u16 iobase;
+ u8 value = 0, bTmp;
+
+ iobase = self->io.fir_base;
+ /* Update accounting for new speed */
+ self->io.speed = speed;
+#ifdef DBGMSG
+ DBG(printk(KERN_INFO "change_speed =%x......\n", speed));
+#endif
+
+#ifdef DBG_IO
+ if (self->io.speed > 0x2580)
+ outb(0xaa, 0x90);
+ else
+ outb(0xbb, 0x90);
+#endif
+
+
+ /* Controller mode sellection */
+ switch (speed) {
+ case 9600:
+ value = 11;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 19200:
+ value = 5;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 38400:
+ value = 2;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 57600:
+ value = 1;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 115200:
+ value = 0;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 576000:
+ value = 0;
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ break;
+ case 1152000:
+ value = 0;
+ SetMIR(iobase, ON);
+ break;
+ case 4000000:
+ value = 0;
+ SetFIR(iobase, ON);
+ SetPulseWidth(iobase, 0);
+ SetSendPreambleCount(iobase, 14);
+ CRC16(iobase, OFF);
+ EnTXCRC(iobase, ON);
+ break;
+ case 16000000:
+ value = 0;
+ SetVFIR(iobase, ON);
+ break;
+ default:
+ value = 0;
+ break;
+ }
+ /* Set baudrate to 0x19[2..7] */
+ bTmp = (ReadReg(iobase, I_CF_H_1) & 0x03);
+ bTmp = bTmp | (value << 2);
+ WriteReg(iobase, I_CF_H_1, bTmp);
+ via_ircc_change_dongle_speed(iobase, speed, self->io.dongle_id);
+// EnTXFIFOHalfLevelInt(iobase,ON);
+ /* Set FIFO size to 64 */
+ SetFIFO(iobase, 64);
+ /* Enable some interrupts so we can receive frames */
+ //EnAllInt(iobase,ON);
+
+ if (IsSIROn(iobase)) {
+ SIRFilter(iobase, ON);
+ SIRRecvAny(iobase, ON);
+ } else {
+ SIRFilter(iobase, OFF);
+ SIRRecvAny(iobase, OFF);
+ }
+ if (speed > 115200) {
+ /* Install FIR xmit handler */
+ dev->hard_start_xmit = via_ircc_hard_xmit_fir;
+ via_ircc_dma_receive(self);
+ } else {
+ /* Install SIR xmit handler */
+ dev->hard_start_xmit = via_ircc_hard_xmit_sir;
+ }
+ netif_wake_queue(dev);
+}
+
+/*
+ * Function via_ircc_hard_xmit (skb, dev)
+ *
+ * Transmit the frame!
+ *
+ */
+static int via_ircc_hard_xmit_sir(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct via_ircc_cb *self;
+ unsigned long flags;
+ u16 iobase;
+ __u32 speed;
+
+ self = (struct via_ircc_cb *) dev->priv;
+ ASSERT(self != NULL, return 0;);
+ iobase = self->io.fir_base;
+
+ netif_stop_queue(dev);
+ /* 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) {
+ via_ircc_change_speed(self, speed);
+ dev->trans_start = jiffies;
+ dev_kfree_skb(skb);
+ return 0;
+ } else
+ self->new_speed = speed;
+ }
+ InitCard(iobase);
+ CommonInit(iobase);
+ SIRFilter(iobase, ON);
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ EnTXCRC(iobase, 0);
+ WriteReg(iobase, I_ST_CT_0, 0x00);
+
+ spin_lock_irqsave(&self->lock, flags);
+ self->tx_buff.data = self->tx_buff.head;
+ self->tx_buff.len =
+ async_wrap_skb(skb, self->tx_buff.data,
+ self->tx_buff.truesize);
+
+ self->stats.tx_bytes += self->tx_buff.len;
+ SetBaudRate(iobase, speed);
+ SetPulseWidth(iobase, 12);
+ SetSendPreambleCount(iobase, 0);
+ WriteReg(iobase, I_ST_CT_0, 0x80);
+
+ EnableTX(iobase, ON);
+ EnableRX(iobase, OFF);
+
+ ResetChip(iobase, 0);
+ ResetChip(iobase, 1);
+ ResetChip(iobase, 2);
+ ResetChip(iobase, 3);
+ ResetChip(iobase, 4);
+
+ EnAllInt(iobase, ON);
+ EnTXDMA(iobase, ON);
+ EnRXDMA(iobase, OFF);
+
+ setup_dma(self->io.dma, self->tx_buff.data, self->tx_buff.len,
+ DMA_TX_MODE);
+
+ SetSendByte(iobase, self->tx_buff.len);
+ RXStart(iobase, OFF);
+ TXStart(iobase, ON);
+
+ dev->trans_start = jiffies;
+ spin_unlock_irqrestore(&self->lock, flags);
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+static int via_ircc_hard_xmit_fir(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct via_ircc_cb *self;
+ u16 iobase;
+ __u32 speed;
+ unsigned long flags;
+
+ self = (struct via_ircc_cb *) dev->priv;
+ iobase = self->io.fir_base;
+
+ if (self->st_fifo.len)
+ return 0;
+ if (self->chip_id == 0x3076)
+ iodelay(1500);
+ else
+ udelay(1500);
+ netif_stop_queue(dev);
+ speed = irda_get_next_speed(skb);
+ if ((speed != self->io.speed) && (speed != -1)) {
+ if (!skb->len) {
+ via_ircc_change_speed(self, speed);
+ dev->trans_start = jiffies;
+ dev_kfree_skb(skb);
+ return 0;
+ } else
+ self->new_speed = speed;
+ }
+ spin_lock_irqsave(&self->lock, flags);
+ 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;
+ self->stats.tx_bytes += skb->len;
+ memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data,
+ skb->len);
+ self->tx_fifo.len++;
+ self->tx_fifo.free++;
+//F01 if (self->tx_fifo.len == 1) {
+ via_ircc_dma_xmit(self, iobase);
+//F01 }
+//F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) netif_wake_queue(self->netdev);
+ dev->trans_start = jiffies;
+ dev_kfree_skb(skb);
+ spin_unlock_irqrestore(&self->lock, flags);
+ return 0;
+
+}
+
+static int via_ircc_dma_xmit(struct via_ircc_cb *self, u16 iobase)
+{
+// int i;
+// u8 *ch;
+
+ EnTXDMA(iobase, OFF);
+ self->io.direction = IO_XMIT;
+ EnPhys(iobase, ON);
+ EnableTX(iobase, ON);
+ EnableRX(iobase, OFF);
+ ResetChip(iobase, 0);
+ ResetChip(iobase, 1);
+ ResetChip(iobase, 2);
+ ResetChip(iobase, 3);
+ ResetChip(iobase, 4);
+ EnAllInt(iobase, ON);
+ EnTXDMA(iobase, ON);
+ EnRXDMA(iobase, OFF);
+ setup_dma(self->io.dma,
+ self->tx_fifo.queue[self->tx_fifo.ptr].start,
+ self->tx_fifo.queue[self->tx_fifo.ptr].len, DMA_TX_MODE);
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO "dma_xmit:tx_fifo.ptr=%x,len=%x,tx_fifo.len=%x..\n",
+ self->tx_fifo.ptr, self->tx_fifo.queue[self->tx_fifo.ptr].len,
+ self->tx_fifo.len));
+/*
+ ch = self->tx_fifo.queue[self->tx_fifo.ptr].start;
+ for(i=0 ; i < self->tx_fifo.queue[self->tx_fifo.ptr].len ; i++) {
+ DBG(printk(KERN_INFO "%x..\n",ch[i]));
+ }
+*/
+#endif
+
+ SetSendByte(iobase, self->tx_fifo.queue[self->tx_fifo.ptr].len);
+ RXStart(iobase, OFF);
+ TXStart(iobase, ON);
+ return 0;
+
+}
+
+/*
+ * Function via_ircc_dma_xmit_complete (self)
+ *
+ * The transfer of a frame in finished. This function will only be called
+ * by the interrupt handler
+ *
+ */
+static int via_ircc_dma_xmit_complete(struct via_ircc_cb *self)
+{
+ int iobase;
+ int ret = TRUE;
+ u8 Tx_status;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+ iobase = self->io.fir_base;
+ /* Disable DMA */
+// DisableDmaChannel(self->io.dma);
+ /* Check for underrrun! */
+ /* Clear bit, by writing 1 into it */
+ Tx_status = GetTXStatus(iobase);
+ if (Tx_status & 0x08) {
+ self->stats.tx_errors++;
+ self->stats.tx_fifo_errors++;
+ hwreset(self);
+// how to clear underrrun ?
+ } else {
+ self->stats.tx_packets++;
+ ResetChip(iobase, 3);
+ ResetChip(iobase, 4);
+ }
+ /* Check if we need to change the speed */
+ if (self->new_speed) {
+ via_ircc_change_speed(self, self->new_speed);
+ self->new_speed = 0;
+ }
+
+ /* Finished with this frame, so prepare for next */
+ if (IsFIROn(iobase)) {
+ if (self->tx_fifo.len) {
+ self->tx_fifo.len--;
+ self->tx_fifo.ptr++;
+ }
+ }
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO
+ "via_ircc_dma_xmit_complete:tx_fifo.len=%x ,tx_fifo.ptr=%x,tx_fifo.free=%x...\n",
+ self->tx_fifo.len, self->tx_fifo.ptr, self->tx_fifo.free));
+#endif
+/* F01_S
+ // Any frames to be sent back-to-back?
+ if (self->tx_fifo.len) {
+ // Not finished yet!
+ via_ircc_dma_xmit(self, iobase);
+ ret = FALSE;
+ } else {
+F01_E*/
+ // 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;
+//F01 }
+
+ // Make sure we have room for more frames
+//F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) {
+ // Not busy transmitting anymore
+ // Tell the network layer, that we can accept more frames
+ netif_wake_queue(self->netdev);
+//F01 }
+ return ret;
+}
+
+/*
+ * Function via_ircc_dma_receive (self)
+ *
+ * Set configuration for receive a frame.
+ *
+ */
+static int via_ircc_dma_receive(struct via_ircc_cb *self)
+{
+ int iobase;
+
+ iobase = self->io.fir_base;
+
+ self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
+ self->tx_fifo.tail = self->tx_buff.head;
+ self->RxDataReady = 0;
+ self->io.direction = IO_RECV;
+ self->rx_buff.data = self->rx_buff.head;
+ self->st_fifo.len = self->st_fifo.pending_bytes = 0;
+ self->st_fifo.tail = self->st_fifo.head = 0;
+ EnPhys(iobase, ON);
+ EnableTX(iobase, OFF);
+ EnableRX(iobase, ON);
+
+ ResetChip(iobase, 0);
+ ResetChip(iobase, 1);
+ ResetChip(iobase, 2);
+ ResetChip(iobase, 3);
+ ResetChip(iobase, 4);
+
+ EnAllInt(iobase, ON);
+ EnTXDMA(iobase, OFF);
+ EnRXDMA(iobase, ON);
+ setup_dma(self->io.dma2, self->rx_buff.data,
+ self->rx_buff.truesize, DMA_RX_MODE);
+ TXStart(iobase, OFF);
+ RXStart(iobase, ON);
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_dma_receive_complete (self)
+ *
+ * Controller Finished with receiving frames,
+ * and this routine is call by ISR
+ *
+ */
+static int via_ircc_dma_receive_complete(struct via_ircc_cb *self,
+ int iobase)
+{
+ struct st_fifo *st_fifo;
+ struct sk_buff *skb;
+ int len, i;
+ u8 status = 0;
+
+ iobase = self->io.fir_base;
+ st_fifo = &self->st_fifo;
+
+ if (self->io.speed < 4000000) { //Speed below FIR
+ len = GetRecvByte(iobase, self);
+ skb = dev_alloc_skb(len + 1);
+ if (skb == NULL)
+ return FALSE;
+ // Make sure IP header gets aligned
+ skb_reserve(skb, 1);
+ skb_put(skb, len - 2);
+ if (self->chip_id == 0x3076) {
+ for (i = 0; i < len - 2; i++)
+ skb->data[i] = self->rx_buff.data[i * 2];
+ } else {
+ if (self->chip_id == 0x3096) {
+ for (i = 0; i < len - 2; i++)
+ skb->data[i] =
+ self->rx_buff.data[i];
+ }
+ }
+ // Move to next frame
+ self->rx_buff.data += len;
+ self->stats.rx_bytes += len;
+ self->stats.rx_packets++;
+ skb->dev = self->netdev;
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ netif_rx(skb);
+ return TRUE;
+ }
+
+ else { //FIR mode
+ len = GetRecvByte(iobase, self);
+ if (len == 0)
+ return TRUE; //interrupt only, data maybe move by RxT
+ if (((len - 4) < 2) || ((len - 4) > 2048)) {
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO
+ "receive_comple:Trouble:len=%x,CurCount=%x,LastCount=%x..\n",
+ len, RxCurCount(iobase, self),
+ self->RxLastCount));
+#endif
+ hwreset(self);
+ return FALSE;
+ }
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO
+ "recv_comple:fifo.len=%x,len=%x,CurCount=%x..\n",
+ st_fifo->len, len - 4, RxCurCount(iobase, self)));
+#endif
+ 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++;
+ if (st_fifo->tail > MAX_RX_WINDOW)
+ st_fifo->tail = 0;
+ self->RxDataReady = 0;
+
+ // It maybe have MAX_RX_WINDOW package receive by
+ // receive_complete before Timer IRQ
+/* F01_S
+ if (st_fifo->len < (MAX_RX_WINDOW+2 )) {
+ RXStart(iobase,ON);
+ SetTimer(iobase,4);
+ }
+ else {
+F01_E */
+ EnableRX(iobase, OFF);
+ EnRXDMA(iobase, OFF);
+ RXStart(iobase, OFF);
+//F01_S
+ // Put this entry back in fifo
+ if (st_fifo->head > MAX_RX_WINDOW)
+ st_fifo->head = 0;
+ status = st_fifo->entries[st_fifo->head].status;
+ len = st_fifo->entries[st_fifo->head].len;
+ st_fifo->head++;
+ st_fifo->len--;
+
+ skb = dev_alloc_skb(len + 1 - 4);
+ /*
+ * if frame size,data ptr,or skb ptr are wrong ,the get next
+ * entry.
+ */
+ if ((skb == NULL) || (skb->data == NULL)
+ || (self->rx_buff.data == NULL) || (len < 6)) {
+ self->stats.rx_dropped++;
+ return TRUE;
+ }
+ skb_reserve(skb, 1);
+ skb_put(skb, len - 4);
+ memcpy(skb->data, self->rx_buff.data, len - 4);
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO "RxT:len=%x.rx_buff=%x\n", len - 4,
+ self->rx_buff.data));
+/* for(i=0 ; i < (len-4) ; i++) {
+ DBG(printk(KERN_INFO "%x..\n",self->rx_buff.data[i]));
+ }
+*/
+#endif
+ // Move to next frame
+ self->rx_buff.data += len;
+ self->stats.rx_bytes += len;
+ self->stats.rx_packets++;
+ skb->dev = self->netdev;
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ netif_rx(skb);
+
+//F01_E
+ } //FIR
+ return TRUE;
+
+}
+
+/*
+ * if frame is received , but no INT ,then use this routine to upload frame.
+ */
+static int upload_rxdata(struct via_ircc_cb *self, int iobase)
+{
+ struct sk_buff *skb;
+ int len;
+ struct st_fifo *st_fifo;
+ st_fifo = &self->st_fifo;
+
+ len = GetRecvByte(iobase, self);
+
+#ifdef DBGMSG
+ DBG(printk(KERN_INFO "upload_rxdata: len=%x\n", len));
+#endif
+ skb = dev_alloc_skb(len + 1);
+ if ((skb == NULL) || ((len - 4) < 2)) {
+ self->stats.rx_dropped++;
+ return FALSE;
+ }
+ skb_reserve(skb, 1);
+ skb_put(skb, len - 4 + 1);
+ memcpy(skb->data, self->rx_buff.data, len - 4 + 1);
+ st_fifo->tail++;
+ st_fifo->len++;
+ if (st_fifo->tail > MAX_RX_WINDOW)
+ st_fifo->tail = 0;
+ // Move to next frame
+ self->rx_buff.data += len;
+ self->stats.rx_bytes += len;
+ self->stats.rx_packets++;
+ skb->dev = self->netdev;
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ netif_rx(skb);
+ if (st_fifo->len < (MAX_RX_WINDOW + 2)) {
+ RXStart(iobase, ON);
+ } else {
+ EnableRX(iobase, OFF);
+ EnRXDMA(iobase, OFF);
+ RXStart(iobase, OFF);
+ }
+ return TRUE;
+}
+
+/*
+ * Implement back to back receive , use this routine to upload data.
+ */
+
+static int RxTimerHandler(struct via_ircc_cb *self, int iobase)
+{
+ struct st_fifo *st_fifo;
+ struct sk_buff *skb;
+ int len;
+ u8 status;
+
+ st_fifo = &self->st_fifo;
+
+ if (CkRxRecv(iobase, self)) {
+ // if still receiving ,then return ,don't upload frame
+ self->RetryCount = 0;
+ SetTimer(iobase, 20);
+ self->RxDataReady++;
+ return FALSE;
+ } else
+ self->RetryCount++;
+
+ if ((self->RetryCount >= 1) ||
+ ((st_fifo->pending_bytes + 2048) > self->rx_buff.truesize)
+ || (st_fifo->len >= (MAX_RX_WINDOW))) {
+ while (st_fifo->len > 0) { //upload frame
+ // Put this entry back in fifo
+ if (st_fifo->head > MAX_RX_WINDOW)
+ st_fifo->head = 0;
+ status = st_fifo->entries[st_fifo->head].status;
+ len = st_fifo->entries[st_fifo->head].len;
+ st_fifo->head++;
+ st_fifo->len--;
+
+ skb = dev_alloc_skb(len + 1 - 4);
+ /*
+ * if frame size, data ptr, or skb ptr are wrong,
+ * then get next entry.
+ */
+ if ((skb == NULL) || (skb->data == NULL)
+ || (self->rx_buff.data == NULL) || (len < 6)) {
+ self->stats.rx_dropped++;
+ continue;
+ }
+ skb_reserve(skb, 1);
+ skb_put(skb, len - 4);
+ memcpy(skb->data, self->rx_buff.data, len - 4);
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO "RxT:len=%x.head=%x\n", len - 4,
+ st_fifo->head));
+#endif
+ // Move to next frame
+ self->rx_buff.data += len;
+ self->stats.rx_bytes += len;
+ self->stats.rx_packets++;
+ skb->dev = self->netdev;
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ netif_rx(skb);
+ } //while
+ self->RetryCount = 0;
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO
+ "RxT:End of upload HostStatus=%x,RxStatus=%x\n",
+ GetHostStatus(iobase), GetRXStatus(iobase)));
+#endif
+ /*
+ * if frame is receive complete at this routine ,then upload
+ * frame.
+ */
+ if ((GetRXStatus(iobase) & 0x10)
+ && (RxCurCount(iobase, self) != self->RxLastCount)) {
+ upload_rxdata(self, iobase);
+ if (irda_device_txqueue_empty(self->netdev))
+ via_ircc_dma_receive(self);
+ }
+ } // timer detect complete
+ else
+ SetTimer(iobase, 4);
+ return TRUE;
+
+}
+
+
+
+/*
+ * Function via_ircc_interrupt (irq, dev_id, regs)
+ *
+ * An interrupt from the chip has arrived. Time to do some work
+ *
+ */
+static irqreturn_t via_ircc_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct via_ircc_cb *self;
+ int iobase;
+ u8 iHostIntType, iRxIntType, iTxIntType;
+
+ if (!dev) {
+ WARNING("%s: irq %d for unknown device.\n", driver_name,
+ irq);
+ return IRQ_NONE;
+ }
+ self = (struct via_ircc_cb *) dev->priv;
+ iobase = self->io.fir_base;
+ spin_lock(&self->lock);
+ iHostIntType = GetHostStatus(iobase);
+ if ((iHostIntType & 0x40) != 0) { //Timer Event
+ self->EventFlag.TimeOut++;
+ ClearTimerInt(iobase, 1);
+ if (self->io.direction == IO_XMIT) {
+ via_ircc_dma_xmit(self, iobase);
+ }
+ if (self->io.direction == IO_RECV) {
+ /*
+ * frame ready hold too long, must reset.
+ */
+ if (self->RxDataReady > 30) {
+ hwreset(self);
+ if (irda_device_txqueue_empty
+ (self->netdev)) {
+ via_ircc_dma_receive(self);
+ }
+ } else { // call this to upload frame.
+ RxTimerHandler(self, iobase);
+ }
+ } //RECV
+ } //Timer Event
+ if ((iHostIntType & 0x20) != 0) { //Tx Event
+ iTxIntType = GetTXStatus(iobase);
+ if (iTxIntType & 0x4) {
+ self->EventFlag.EOMessage++; // read and will auto clean
+ if (via_ircc_dma_xmit_complete(self)) {
+ if (irda_device_txqueue_empty
+ (self->netdev)) {
+ via_ircc_dma_receive(self);
+ }
+ } else {
+ self->EventFlag.Unknown++;
+ }
+ } //EOP
+ } //Tx Event
+ //----------------------------------------
+ if ((iHostIntType & 0x10) != 0) { //Rx Event
+ /* Check if DMA has finished */
+ iRxIntType = GetRXStatus(iobase);
+#ifdef DBGMSG
+ if (!iRxIntType)
+ DBG(printk(KERN_INFO " RxIRQ =0\n"));
+#endif
+ if (iRxIntType & 0x10) {
+ if (via_ircc_dma_receive_complete(self, iobase)) {
+//F01 if(!(IsFIROn(iobase))) via_ircc_dma_receive(self);
+ via_ircc_dma_receive(self);
+ }
+ } // No ERR
+ else { //ERR
+#ifdef DBGMSG
+ DBG(printk
+ (KERN_INFO
+ " RxIRQ ERR:iRxIntType=%x,HostIntType=%x,CurCount=%x,RxLastCount=%x_____\n",
+ iRxIntType, iHostIntType, RxCurCount(iobase,
+ self),
+ self->RxLastCount));
+#endif
+ if (iRxIntType & 0x20) { //FIFO OverRun ERR
+ ResetChip(iobase, 0);
+ ResetChip(iobase, 1);
+ } else { //PHY,CRC ERR
+
+ if (iRxIntType != 0x08)
+ hwreset(self); //F01
+ }
+ via_ircc_dma_receive(self);
+ } //ERR
+
+ } //Rx Event
+ spin_unlock(&self->lock);
+ return IRQ_HANDLED;
+}
+
+void hwreset(struct via_ircc_cb *self)
+{
+ int iobase;
+ iobase = self->io.fir_base;
+#ifdef DBGMSG
+ DBG(printk(KERN_INFO "hwreset ....\n"));
+#endif
+ ResetChip(iobase, 5);
+ EnableDMA(iobase, OFF);
+ EnableTX(iobase, OFF);
+ EnableRX(iobase, OFF);
+ EnRXDMA(iobase, OFF);
+ EnTXDMA(iobase, OFF);
+ RXStart(iobase, OFF);
+ TXStart(iobase, OFF);
+ InitCard(iobase);
+ CommonInit(iobase);
+ SIRFilter(iobase, ON);
+ SetSIR(iobase, ON);
+ CRC16(iobase, ON);
+ EnTXCRC(iobase, 0);
+ WriteReg(iobase, I_ST_CT_0, 0x00);
+ SetBaudRate(iobase, 9600);
+ SetPulseWidth(iobase, 12);
+ SetSendPreambleCount(iobase, 0);
+ WriteReg(iobase, I_ST_CT_0, 0x80);
+ via_ircc_change_speed(self, self->io.speed);
+ self->st_fifo.len = 0;
+}
+
+/*
+ * Function via_ircc_is_receiving (self)
+ *
+ * Return TRUE is we are currently receiving a frame
+ *
+ */
+static int via_ircc_is_receiving(struct via_ircc_cb *self)
+{
+ int status = FALSE;
+ int iobase;
+
+ ASSERT(self != NULL, return FALSE;);
+
+ iobase = self->io.fir_base;
+ if (CkRxRecv(iobase, self))
+ status = TRUE;
+#ifdef DBGMSG
+ DBG(printk(KERN_INFO "is_receiving status=%x....\n", status));
+#endif
+ return status;
+}
+
+/*
+ * Function via_ircc_net_init (dev)
+ *
+ * Initialize network device
+ *
+ */
+static int via_ircc_net_init(struct net_device *dev)
+{
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ /* Keep track of module usage */
+ SET_MODULE_OWNER(dev);
+
+ /* Setup to be a normal IrDA network device driver */
+ irda_device_setup(dev);
+
+ /* Insert overrides below this line! */
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_net_open (dev)
+ *
+ * Start the device
+ *
+ */
+static int via_ircc_net_open(struct net_device *dev)
+{
+ struct via_ircc_cb *self;
+ int iobase;
+ char hwname[32];
+
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ ASSERT(dev != NULL, return -1;);
+ self = (struct via_ircc_cb *) dev->priv;
+ self->stats.rx_packets = 0;
+ ASSERT(self != NULL, return 0;);
+ iobase = self->io.fir_base;
+ if (request_irq
+ (self->io.irq, via_ircc_interrupt, 0, dev->name, dev)) {
+ WARNING("%s, unable to allocate irq=%d\n", 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)) {
+ WARNING("%s, unable to allocate dma=%d\n", driver_name,
+ self->io.dma);
+ free_irq(self->io.irq, self);
+ return -EAGAIN;
+ }
+ if (self->io.dma2 != self->io.dma) {
+ if (request_dma(self->io.dma2, dev->name)) {
+ WARNING("%s, unable to allocate dma2=%d\n",
+ driver_name, self->io.dma2);
+ free_irq(self->io.irq, self);
+ return -EAGAIN;
+ }
+ }
+
+
+ /* turn on interrupts */
+ EnAllInt(iobase, ON);
+ EnInternalLoop(iobase, OFF);
+ EnExternalLoop(iobase, OFF);
+ /* Ready to play! */
+ netif_start_queue(dev);
+
+ /*
+ * Open new IrLAP layer instance, now that everything should be
+ * initialized properly
+ */
+ sprintf(hwname, "VIA");
+ /*
+ * for different kernel ,irlap_open have different parameter.
+ */
+ self->irlap = irlap_open(dev, &self->qos, hwname);
+// self->irlap = irlap_open(dev, &self->qos);
+
+ self->RxLastCount = 0;
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_net_close (dev)
+ *
+ * Stop the device
+ *
+ */
+static int via_ircc_net_close(struct net_device *dev)
+{
+ struct via_ircc_cb *self;
+ int iobase;
+
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ ASSERT(dev != NULL, return -1;);
+ self = (struct via_ircc_cb *) dev->priv;
+ ASSERT(self != NULL, return 0;);
+
+#ifdef DBG_IO
+ outb(0xff, 0x90);
+ outb(0xff, 0x94);
+#endif
+ /* Stop device */
+ netif_stop_queue(dev);
+ /* Stop and remove instance of IrLAP */
+ if (self->irlap)
+ irlap_close(self->irlap);
+ self->irlap = NULL;
+ iobase = self->io.fir_base;
+ EnTXDMA(iobase, OFF);
+ EnRXDMA(iobase, OFF);
+ DisableDmaChannel(self->io.dma);
+
+ /* Disable interrupts */
+ EnAllInt(iobase, OFF);
+ free_irq(self->io.irq, dev);
+ free_dma(self->io.dma);
+
+ return 0;
+}
+
+/*
+ * Function via_ircc_net_ioctl (dev, rq, cmd)
+ *
+ * Process IOCTL commands for this device
+ *
+ */
+static int via_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq,
+ int cmd)
+{
+ struct if_irda_req *irq = (struct if_irda_req *) rq;
+ struct via_ircc_cb *self;
+ unsigned long flags;
+ int ret = 0;
+
+ ASSERT(dev != NULL, return -1;);
+ self = dev->priv;
+ ASSERT(self != NULL, return -1;);
+ IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name,
+ cmd);
+ /* Disable interrupts & save flags */
+ spin_lock_irqsave(&self->lock, flags);
+ switch (cmd) {
+ case SIOCSBANDWIDTH: /* Set bandwidth */
+ if (!capable(CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ goto out;
+ }
+ via_ircc_change_speed(self, irq->ifr_baudrate);
+ break;
+ case SIOCSMEDIABUSY: /* Set media busy */
+ if (!capable(CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ goto out;
+ }
+ irda_device_set_media_busy(self->netdev, TRUE);
+ break;
+ case SIOCGRECEIVING: /* Check if we are receiving right now */
+ irq->ifr_receiving = via_ircc_is_receiving(self);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ }
+ out:
+ spin_unlock_irqrestore(&self->lock, flags);
+ return ret;
+}
+
+static struct net_device_stats *via_ircc_net_get_stats(struct net_device
+ *dev)
+{
+ struct via_ircc_cb *self = (struct via_ircc_cb *) dev->priv;
+
+ return &self->stats;
+}
+
+MODULE_AUTHOR("VIA Technologies,inc");
+MODULE_DESCRIPTION("VIA IrDA Device Driver");
+MODULE_LICENSE("GPL");
+
+module_init(via_ircc_init);
+module_exit(via_ircc_cleanup);
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)