diff options
Diffstat (limited to 'drivers/net/irda/via-ircc.c')
| -rw-r--r-- | drivers/net/irda/via-ircc.c | 1593 |
1 files changed, 0 insertions, 1593 deletions
diff --git a/drivers/net/irda/via-ircc.c b/drivers/net/irda/via-ircc.c deleted file mode 100644 index ca4442a9d631..000000000000 --- a/drivers/net/irda/via-ircc.c +++ /dev/null @@ -1,1593 +0,0 @@ -/******************************************************************** - 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, see <http://www.gnu.org/licenses/>. - -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 . - -2004-02-16: <sda@bdit.de> -- Removed unneeded 'legacy' pci stuff. -- Make sure SIR mode is set (hw_init()) before calling mode-dependent stuff. -- On speed change from core, don't send SIR frame with new speed. - Use current speed and change speeds later. -- Make module-param dongle_id actually work. -- New dongle_id 17 (0x11): TDFS4500. Single-ended SIR only. - Tested with home-grown PCB on EPIA boards. -- Code cleanup. - - ********************************************************************/ -#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/init.h> -#include <linux/interrupt.h> -#include <linux/rtnetlink.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/gfp.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 VIA_MODULE_NAME "via-ircc" -#define CHIP_IO_EXTENT 0x40 - -static char *driver_name = VIA_MODULE_NAME; - -/* Module parameters */ -static int qos_mtt_bits = 0x07; /* 1 ms or more */ -static int dongle_id = 0; /* default: probe */ - -/* We can't guess the type of connected dongle, user *must* supply it. */ -module_param(dongle_id, int, 0); - -/* Some prototypes */ -static int via_ircc_open(struct pci_dev *pdev, 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 netdev_tx_t via_ircc_hard_xmit_sir(struct sk_buff *skb, - struct net_device *dev); -static netdev_tx_t via_ircc_hard_xmit_fir(struct sk_buff *skb, - struct net_device *dev); -static void via_hw_init(struct via_ircc_cb *self); -static void via_ircc_change_speed(struct via_ircc_cb *self, __u32 baud); -static irqreturn_t via_ircc_interrupt(int irq, void *dev_id); -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_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 void via_ircc_change_dongle_speed(int iobase, int speed, - int dongle_id); -static int RxTimerHandler(struct via_ircc_cb *self, int iobase); -static 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); - -/* FIXME : Should use udelay() instead, even if we are x86 only - Jean II */ -static void iodelay(int udelay) -{ - u8 data; - int i; - - for (i = 0; i < udelay; i++) { - data = inb(0x80); - } -} - -static const struct pci_device_id via_pci_tbl[] = { - { PCI_VENDOR_ID_VIA, 0x8231, PCI_ANY_ID, PCI_ANY_ID,0,0,0 }, - { PCI_VENDOR_ID_VIA, 0x3109, PCI_ANY_ID, PCI_ANY_ID,0,0,1 }, - { PCI_VENDOR_ID_VIA, 0x3074, PCI_ANY_ID, PCI_ANY_ID,0,0,2 }, - { PCI_VENDOR_ID_VIA, 0x3147, PCI_ANY_ID, PCI_ANY_ID,0,0,3 }, - { PCI_VENDOR_ID_VIA, 0x3177, 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 = via_remove_one, -}; - - -/* - * Function via_ircc_init () - * - * Initialize chip. Just find out chip type and resource. - */ -static int __init via_ircc_init(void) -{ - int rc; - - rc = pci_register_driver(&via_driver); - if (rc < 0) { - pr_debug("%s(): error rc = %d, returning -ENODEV...\n", - __func__, rc); - return -ENODEV; - } - return 0; -} - -static int 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; - - pr_debug("%s(): Device ID=(0X%X)\n", __func__, id->device); - - rc = pci_enable_device (pcidev); - if (rc) { - pr_debug("%s(): error rc = %d\n", __func__, rc); - return -ENODEV; - } - - // South Bridge exist - if ( ReadLPCReg(0x20) != 0x3C ) - Chipset=0x3096; - else - Chipset=0x3076; - - if (Chipset==0x3076) { - pr_debug("%s(): Chipset = 3076\n", __func__); - - 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 ); - rc = via_ircc_open(pcidev, &info, 0x3076); - } else - rc = -ENODEV; //IR not turn on - } else { //Not VT1211 - pr_debug("%s(): Chipset = 3096\n", __func__); - - 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; - rc = via_ircc_open(pcidev, &info, 0x3096); - } else - rc = -ENODEV; //IR not turn on !!!!! - }//Not VT1211 - - pr_debug("%s(): End - rc = %d\n", __func__, rc); - return rc; -} - -static void __exit via_ircc_cleanup(void) -{ - /* Cleanup all instances of the driver */ - pci_unregister_driver (&via_driver); -} - -static const struct net_device_ops via_ircc_sir_ops = { - .ndo_start_xmit = via_ircc_hard_xmit_sir, - .ndo_open = via_ircc_net_open, - .ndo_stop = via_ircc_net_close, - .ndo_do_ioctl = via_ircc_net_ioctl, -}; -static const struct net_device_ops via_ircc_fir_ops = { - .ndo_start_xmit = via_ircc_hard_xmit_fir, - .ndo_open = via_ircc_net_open, - .ndo_stop = via_ircc_net_close, - .ndo_do_ioctl = via_ircc_net_ioctl, -}; - -/* - * Function via_ircc_open(pdev, iobase, irq) - * - * Open driver instance - * - */ -static int via_ircc_open(struct pci_dev *pdev, chipio_t *info, unsigned int id) -{ - struct net_device *dev; - struct via_ircc_cb *self; - int err; - - /* Allocate new instance of the driver */ - dev = alloc_irdadev(sizeof(struct via_ircc_cb)); - if (dev == NULL) - return -ENOMEM; - - self = netdev_priv(dev); - self->netdev = dev; - spin_lock_init(&self->lock); - - pci_set_drvdata(pdev, self); - - /* 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)) { - pr_debug("%s(), can't get iobase of 0x%03x\n", - __func__, self->io.fir_base); - err = -ENODEV; - goto err_out1; - } - - /* Initialize QoS for this device */ - irda_init_max_qos_capabilies(&self->qos); - - /* 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; - - /* The only value we must override it the baudrate */ - /* Maximum speeds and capabilities are dongle-dependent. */ - switch( self->io.dongle_id ){ - case 0x0d: - self->qos.baud_rate.bits = - IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200 | - IR_576000 | IR_1152000 | (IR_4000000 << 8); - break; - default: - self->qos.baud_rate.bits = - IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200; - break; - } - - /* Following was used for testing: - * - * self->qos.baud_rate.bits = IR_9600; - * - * Is is no good, as it prohibits (error-prone) speed-changes. - */ - - self->qos.min_turn_time.bits = qos_mtt_bits; - irda_qos_bits_to_value(&self->qos); - - /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ - self->rx_buff.truesize = 14384 + 2048; - self->tx_buff.truesize = 14384 + 2048; - - /* Allocate memory if needed */ - self->rx_buff.head = - dma_zalloc_coherent(&pdev->dev, self->rx_buff.truesize, - &self->rx_buff_dma, GFP_KERNEL); - if (self->rx_buff.head == NULL) { - err = -ENOMEM; - goto err_out2; - } - - self->tx_buff.head = - dma_zalloc_coherent(&pdev->dev, self->tx_buff.truesize, - &self->tx_buff_dma, GFP_KERNEL); - if (self->tx_buff.head == NULL) { - err = -ENOMEM; - goto err_out3; - } - - self->rx_buff.in_frame = FALSE; - self->rx_buff.state = OUTSIDE_FRAME; - self->tx_buff.data = self->tx_buff.head; - self->rx_buff.data = self->rx_buff.head; - - /* Reset Tx queue info */ - self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; - self->tx_fifo.tail = self->tx_buff.head; - - /* Override the network functions we need to use */ - dev->netdev_ops = &via_ircc_sir_ops; - - err = register_netdev(dev); - if (err) - goto err_out4; - - net_info_ratelimited("IrDA: Registered device %s (via-ircc)\n", - dev->name); - - /* Initialise the hardware.. - */ - self->io.speed = 9600; - via_hw_init(self); - return 0; - err_out4: - dma_free_coherent(&pdev->dev, self->tx_buff.truesize, - self->tx_buff.head, self->tx_buff_dma); - err_out3: - dma_free_coherent(&pdev->dev, self->rx_buff.truesize, - self->rx_buff.head, self->rx_buff_dma); - err_out2: - release_region(self->io.fir_base, self->io.fir_ext); - err_out1: - free_netdev(dev); - return err; -} - -/* - * Function via_remove_one(pdev) - * - * Close driver instance - * - */ -static void via_remove_one(struct pci_dev *pdev) -{ - struct via_ircc_cb *self = pci_get_drvdata(pdev); - int iobase; - - iobase = self->io.fir_base; - - ResetChip(iobase, 5); //hardware reset. - /* Remove netdevice */ - unregister_netdev(self->netdev); - - /* Release the PORT that this driver is using */ - pr_debug("%s(), Releasing Region %03x\n", - __func__, self->io.fir_base); - release_region(self->io.fir_base, self->io.fir_ext); - if (self->tx_buff.head) - dma_free_coherent(&pdev->dev, self->tx_buff.truesize, - self->tx_buff.head, self->tx_buff_dma); - if (self->rx_buff.head) - dma_free_coherent(&pdev->dev, self->rx_buff.truesize, - self->rx_buff.head, self->rx_buff_dma); - - free_netdev(self->netdev); - - pci_disable_device(pdev); -} - -/* - * Function via_hw_init(self) - * - * Returns non-negative on success. - * - * Formerly via_ircc_setup - */ -static void via_hw_init(struct via_ircc_cb *self) -{ - int iobase = self->io.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 - /* Int Init */ - EnRXSpecInt(iobase, ON); - - /* The following is basically hwreset */ - /* If this is the case, why not just call hwreset() ? Jean II */ - 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); - - self->io.speed = 9600; - self->st_fifo.len = 0; - - via_ircc_change_dongle_speed(iobase, self->io.speed, - self->io.dongle_id); - - WriteReg(iobase, I_ST_CT_0, 0x80); -} - -/* - * Function via_ircc_read_dongle_id (void) - * - */ -static int via_ircc_read_dongle_id(int iobase) -{ - net_err_ratelimited("via-ircc: dongle probing not supported, please specify dongle_id module parameter\n"); - return 9; /* Default to IBM */ -} - -/* - * 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; - - /* speed is unused, as we use IsSIROn()/IsMIROn() */ - speed = speed; - - pr_debug("%s(): change_dongle_speed to %d for 0x%x, %d\n", - __func__, speed, iobase, dongle_id); - - switch (dongle_id) { - - /* Note: The dongle_id's listed here are derived from - * nsc-ircc.c */ - - 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 0x11: /* Temic TFDS4500 */ - - pr_debug("%s: Temic TFDS4500: One RX pin, TX normal, RX inverted\n", - __func__); - - UseOneRX(iobase, ON); //use ONE RX....RX1 - InvertTX(iobase, OFF); - InvertRX(iobase, ON); // invert RX pin - - EnRX2(iobase, ON); //sir to rx2 - EnGPIOtoRX2(iobase, OFF); - - if( IsSIROn(iobase) ){ //sir - - // Mode select On - SlowIRRXLowActive(iobase, ON); - udelay(20); - // Mode select Off - SlowIRRXLowActive(iobase, OFF); - - } else{ - pr_debug("%s: Warning: TFDS4500 not running in SIR mode !\n", - __func__); - } - 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); - break; - - default: - net_err_ratelimited("%s: Error: dongle_id %d unsupported !\n", - __func__, dongle_id); - } -} - -/* - * 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; - pr_debug("%s: change_speed to %d bps.\n", __func__, speed); - - WriteReg(iobase, I_ST_CT_0, 0x0); - - /* Controller mode sellection */ - switch (speed) { - case 2400: - case 9600: - case 19200: - case 38400: - case 57600: - case 115200: - value = (115200/speed)-1; - SetSIR(iobase, ON); - CRC16(iobase, ON); - break; - case 576000: - /* FIXME: this can't be right, as it's the same as 115200, - * and 576000 is MIR, not SIR. */ - value = 0; - SetSIR(iobase, ON); - CRC16(iobase, ON); - break; - case 1152000: - value = 0; - SetMIR(iobase, ON); - /* FIXME: CRC ??? */ - 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); - /* FIXME: CRC ??? */ - break; - default: - value = 0; - break; - } - - /* Set baudrate to 0x19[2..7] */ - bTmp = (ReadReg(iobase, I_CF_H_1) & 0x03); - bTmp |= value << 2; - WriteReg(iobase, I_CF_H_1, bTmp); - - /* Some dongles may need to be informed about speed changes. */ - via_ircc_change_dongle_speed(iobase, speed, self->io.dongle_id); - - /* Set FIFO size to 64 */ - SetFIFO(iobase, 64); - - /* Enable IR */ - WriteReg(iobase, I_ST_CT_0, 0x80); - - // EnTXFIFOHalfLevelInt(iobase,ON); - - /* 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->netdev_ops = &via_ircc_fir_ops; - via_ircc_dma_receive(self); - } else { - /* Install SIR xmit handler */ - dev->netdev_ops = &via_ircc_sir_ops; - } - netif_wake_queue(dev); -} - -/* - * Function via_ircc_hard_xmit (skb, dev) - * - * Transmit the frame! - * - */ -static netdev_tx_t 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 = netdev_priv(dev); - IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); - 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); - netif_trans_update(dev); - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } 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); - - dev->stats.tx_bytes += self->tx_buff.len; - /* Send this frame with old speed */ - SetBaudRate(iobase, self->io.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); - - irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, - DMA_TX_MODE); - - SetSendByte(iobase, self->tx_buff.len); - RXStart(iobase, OFF); - TXStart(iobase, ON); - - netif_trans_update(dev); - spin_unlock_irqrestore(&self->lock, flags); - dev_kfree_skb(skb); - return NETDEV_TX_OK; -} - -static netdev_tx_t 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 = netdev_priv(dev); - iobase = self->io.fir_base; - - if (self->st_fifo.len) - return NETDEV_TX_OK; - 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); - netif_trans_update(dev); - dev_kfree_skb(skb); - return NETDEV_TX_OK; - } 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; - dev->stats.tx_bytes += skb->len; - skb_copy_from_linear_data(skb, - self->tx_fifo.queue[self->tx_fifo.free].start, skb->len); - self->tx_fifo.len++; - self->tx_fifo.free++; -//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); - netif_trans_update(dev); - dev_kfree_skb(skb); - spin_unlock_irqrestore(&self->lock, flags); - return NETDEV_TX_OK; - -} - -static int via_ircc_dma_xmit(struct via_ircc_cb *self, u16 iobase) -{ - 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); - irda_setup_dma(self->io.dma, - ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - - self->tx_buff.head) + self->tx_buff_dma, - self->tx_fifo.queue[self->tx_fifo.ptr].len, DMA_TX_MODE); - pr_debug("%s: tx_fifo.ptr=%x,len=%x,tx_fifo.len=%x..\n", - __func__, self->tx_fifo.ptr, - self->tx_fifo.queue[self->tx_fifo.ptr].len, - self->tx_fifo.len); - - 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; - u8 Tx_status; - - iobase = self->io.fir_base; - /* Disable DMA */ -// DisableDmaChannel(self->io.dma); - /* Check for underrun! */ - /* Clear bit, by writing 1 into it */ - Tx_status = GetTXStatus(iobase); - if (Tx_status & 0x08) { - self->netdev->stats.tx_errors++; - self->netdev->stats.tx_fifo_errors++; - hwreset(self); - /* how to clear underrun? */ - } else { - self->netdev->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++; - } - } - pr_debug("%s: tx_fifo.len=%x ,tx_fifo.ptr=%x,tx_fifo.free=%x...\n", - __func__, - self->tx_fifo.len, self->tx_fifo.ptr, self->tx_fifo.free); -/* 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 TRUE; -} - -/* - * 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); - irda_setup_dma(self->io.dma2, self->rx_buff_dma, - 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->netdev->stats.rx_bytes += len; - self->netdev->stats.rx_packets++; - skb->dev = self->netdev; - skb_reset_mac_header(skb); - skb->protocol = htons(ETH_P_IRDA); - netif_rx(skb); - 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)) { - pr_debug("%s(): Trouble:len=%x,CurCount=%x,LastCount=%x\n", - __func__, len, RxCurCount(iobase, self), - self->RxLastCount); - hwreset(self); - return FALSE; - } - pr_debug("%s(): fifo.len=%x,len=%x,CurCount=%x..\n", - __func__, - st_fifo->len, len - 4, RxCurCount(iobase, self)); - - 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, then get next - * entry. - */ - if ((skb == NULL) || (skb->data == NULL) || - (self->rx_buff.data == NULL) || (len < 6)) { - self->netdev->stats.rx_dropped++; - kfree_skb(skb); - return TRUE; - } - skb_reserve(skb, 1); - skb_put(skb, len - 4); - - skb_copy_to_linear_data(skb, self->rx_buff.data, len - 4); - pr_debug("%s(): len=%x.rx_buff=%p\n", __func__, - len - 4, self->rx_buff.data); - - // Move to next frame - self->rx_buff.data += len; - self->netdev->stats.rx_bytes += len; - self->netdev->stats.rx_packets++; - skb->dev = self->netdev; - skb_reset_mac_header(skb); - skb->protocol = htons(ETH_P_IRDA); - netif_rx(skb); - -//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); - - pr_debug("%s(): len=%x\n", __func__, len); - - if ((len - 4) < 2) { - self->netdev->stats.rx_dropped++; - return FALSE; - } - - skb = dev_alloc_skb(len + 1); - if (skb == NULL) { - self->netdev->stats.rx_dropped++; - return FALSE; - } - skb_reserve(skb, 1); - skb_put(skb, len - 4 + 1); - skb_copy_to_linear_data(skb, 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->netdev->stats.rx_bytes += len; - self->netdev->stats.rx_packets++; - skb->dev = self->netdev; - skb_reset_mac_header(skb); - skb->protocol = htons(ETH_P_IRDA); - netif_rx(skb); - 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->netdev->stats.rx_dropped++; - continue; - } - skb_reserve(skb, 1); - skb_put(skb, len - 4); - skb_copy_to_linear_data(skb, self->rx_buff.data, len - 4); - - pr_debug("%s(): len=%x.head=%x\n", __func__, - len - 4, st_fifo->head); - - // Move to next frame - self->rx_buff.data += len; - self->netdev->stats.rx_bytes += len; - self->netdev->stats.rx_packets++; - skb->dev = self->netdev; - skb_reset_mac_header(skb); - skb->protocol = htons(ETH_P_IRDA); - netif_rx(skb); - } //while - self->RetryCount = 0; - - pr_debug("%s(): End of upload HostStatus=%x,RxStatus=%x\n", - __func__, GetHostStatus(iobase), GetRXStatus(iobase)); - - /* - * 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) - * - * An interrupt from the chip has arrived. Time to do some work - * - */ -static irqreturn_t via_ircc_interrupt(int dummy, void *dev_id) -{ - struct net_device *dev = dev_id; - struct via_ircc_cb *self = netdev_priv(dev); - int iobase; - u8 iHostIntType, iRxIntType, iTxIntType; - - iobase = self->io.fir_base; - spin_lock(&self->lock); - iHostIntType = GetHostStatus(iobase); - - pr_debug("%s(): iHostIntType %02x: %s %s %s %02x\n", - __func__, iHostIntType, - (iHostIntType & 0x40) ? "Timer" : "", - (iHostIntType & 0x20) ? "Tx" : "", - (iHostIntType & 0x10) ? "Rx" : "", - (iHostIntType & 0x0e) >> 1); - - 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); - - pr_debug("%s(): iTxIntType %02x: %s %s %s %s\n", - __func__, iTxIntType, - (iTxIntType & 0x08) ? "FIFO underr." : "", - (iTxIntType & 0x04) ? "EOM" : "", - (iTxIntType & 0x02) ? "FIFO ready" : "", - (iTxIntType & 0x01) ? "Early EOM" : ""); - - 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); - - pr_debug("%s(): iRxIntType %02x: %s %s %s %s %s %s %s\n", - __func__, iRxIntType, - (iRxIntType & 0x80) ? "PHY err." : "", - (iRxIntType & 0x40) ? "CRC err" : "", - (iRxIntType & 0x20) ? "FIFO overr." : "", - (iRxIntType & 0x10) ? "EOF" : "", - (iRxIntType & 0x08) ? "RxData" : "", - (iRxIntType & 0x02) ? "RxMaxLen" : "", - (iRxIntType & 0x01) ? "SIR bad" : ""); - if (!iRxIntType) - pr_debug("%s(): RxIRQ =0\n", __func__); - - 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 - pr_debug("%s(): RxIRQ ERR:iRxIntType=%x,HostIntType=%x,CurCount=%x,RxLastCount=%x_____\n", - __func__, iRxIntType, iHostIntType, - RxCurCount(iobase, self), self->RxLastCount); - - 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_RETVAL(iHostIntType); -} - -static void hwreset(struct via_ircc_cb *self) -{ - int iobase; - iobase = self->io.fir_base; - - 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); - - /* Restore speed. */ - 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; - - IRDA_ASSERT(self != NULL, return FALSE;); - - iobase = self->io.fir_base; - if (CkRxRecv(iobase, self)) - status = TRUE; - - pr_debug("%s(): status=%x....\n", __func__, status); - - return status; -} - - -/* - * 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_ASSERT(dev != NULL, return -1;); - self = netdev_priv(dev); - dev->stats.rx_packets = 0; - IRDA_ASSERT(self != NULL, return 0;); - iobase = self->io.fir_base; - if (request_irq(self->io.irq, via_ircc_interrupt, 0, dev->name, dev)) { - net_warn_ratelimited("%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)) { - net_warn_ratelimited("%s, unable to allocate dma=%d\n", - driver_name, self->io.dma); - free_irq(self->io.irq, dev); - return -EAGAIN; - } - if (self->io.dma2 != self->io.dma) { - if (request_dma(self->io.dma2, dev->name)) { - net_warn_ratelimited("%s, unable to allocate dma2=%d\n", - driver_name, self->io.dma2); - free_irq(self->io.irq, dev); - free_dma(self->io.dma); - return -EAGAIN; - } - } - - - /* turn on interrupts */ - EnAllInt(iobase, ON); - EnInternalLoop(iobase, OFF); - EnExternalLoop(iobase, OFF); - - /* */ - via_ircc_dma_receive(self); - - /* Ready to play! */ - netif_start_queue(dev); - - /* - * Open new IrLAP layer instance, now that everything should be - * initialized properly - */ - sprintf(hwname, "VIA @ 0x%x", iobase); - self->irlap = irlap_open(dev, &self->qos, hwname); - - 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_ASSERT(dev != NULL, return -1;); - self = netdev_priv(dev); - IRDA_ASSERT(self != NULL, return 0;); - - /* Stop device */ - netif_stop_queue(dev); - /* Stop and remove instance of IrLAP */ - if (self->irlap) - irlap_close(self->irlap); - self->irlap = NULL; - 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); - if (self->io.dma2 != self->io.dma) - free_dma(self->io.dma2); - - 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; - - IRDA_ASSERT(dev != NULL, return -1;); - self = netdev_priv(dev); - IRDA_ASSERT(self != NULL, return -1;); - pr_debug("%s(), %s, (cmd=0x%X)\n", __func__, 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; -} - -MODULE_AUTHOR("VIA Technologies,inc"); -MODULE_DESCRIPTION("VIA IrDA Device Driver"); -MODULE_LICENSE("GPL"); - -module_init(via_ircc_init); -module_exit(via_ircc_cleanup); |