patch-2.3.26 linux/drivers/net/irda/uircc.c
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- Lines: 948
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.25/linux/drivers/net/irda/uircc.c
- Orig date:
Wed Oct 27 16:34:12 1999
diff -u --recursive --new-file v2.3.25/linux/drivers/net/irda/uircc.c linux/drivers/net/irda/uircc.c
@@ -1,947 +0,0 @@
-/*********************************************************************
- *
- * Filename: uircc.c
- * Version: 0.3
- * Description: Driver for the Sharp Universal Infrared
- * Communications Controller (UIRCC v 1.3)
- * Status: Experimental.
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Sat Dec 26 10:59:03 1998
- * Modified at: Tue Aug 24 13:33:57 1999
- * Modified by: Dag Brattli <dagb@cs.uit.no>
- *
- * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * Neither Dag Brattli nor University of Tromsų admit liability nor
- * provide warranty for any of this software. This material is
- * provided "AS-IS" and at no charge.
- *
- * Applicable Models : Tecra 510CDT, 500C Series, 530CDT, 520CDT,
- * 740CDT, Portege 300CT, 660CDT, Satellite 220C Series,
- * Satellite Pro, 440C Series, 470CDT, 460C Series, 480C Series
- *
- ********************************************************************/
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/malloc.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/byteorder.h>
-
-#include <net/irda/wrapper.h>
-#include <net/irda/irda.h>
-#include <net/irda/irmod.h>
-#include <net/irda/irlap_frame.h>
-#include <net/irda/irda_device.h>
-
-#include <net/irda/uircc.h>
-#include <net/irda/irport.h>
-
-static char *driver_name = "uircc";
-
-#define CHIP_IO_EXTENT 16
-
-static unsigned int io[] = { 0x300, ~0, ~0, ~0 };
-static unsigned int io2[] = { 0x3e8, 0, 0, 0};
-static unsigned int irq[] = { 11, 0, 0, 0 };
-static unsigned int dma[] = { 5, 0, 0, 0 };
-
-static struct uircc_cb *dev_self[] = { NULL, NULL, NULL, NULL};
-
-/* Some prototypes */
-static int uircc_open(int i, unsigned int iobase, unsigned int board_addr,
- unsigned int irq, unsigned int dma);
-#ifdef MODULE
-static int uircc_close(struct irda_device *idev);
-#endif /* MODULE */
-static int uircc_probe(int iobase, int board_addr, int irq, int dma);
-static int uircc_dma_receive(struct irda_device *idev);
-static int uircc_dma_receive_complete(struct irda_device *idev, int iobase);
-static int uircc_hard_xmit(struct sk_buff *skb, struct net_device *dev);
-static void uircc_dma_write(struct irda_device *idev, int iobase);
-static void uircc_change_speed(struct irda_device *idev, __u32 baud);
-static void uircc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static void uircc_wait_until_sent(struct irda_device *idev);
-static int uircc_is_receiving(struct irda_device *idev);
-static int uircc_toshiba_cmd(int *retval, int arg0, int arg1, int arg2);
-static int uircc_net_init(struct net_device *dev);
-static int uircc_net_open(struct net_device *dev);
-static int uircc_net_close(struct net_device *dev);
-
-/*
- * Function uircc_init ()
- *
- * Initialize chip. Just try to find out how many chips we are dealing with
- * and where they are
- */
-int __init uircc_init(void)
-{
- int i;
-
- for ( i=0; (io[i] < 2000) && (i < 4); i++) {
- int ioaddr = io[i];
- if (check_region(ioaddr, CHIP_IO_EXTENT) < 0)
- continue;
- if (uircc_open(i, io[i], io2[i], irq[i], dma[i]) == 0)
- return 0;
- }
- return -ENODEV;
-}
-
-/*
- * Function uircc_cleanup ()
- *
- * Close all configured chips
- *
- */
-#ifdef MODULE
-static void uircc_cleanup(void)
-{
- int i;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- for (i=0; i < 4; i++) {
- if (dev_self[i])
- uircc_close(&(dev_self[i]->idev));
- }
-}
-#endif /* MODULE */
-
-/*
- * Function uircc_open (iobase, irq)
- *
- * Open driver instance
- *
- */
-static int uircc_open(int i, unsigned int iobase, unsigned int iobase2,
- unsigned int irq, unsigned int dma)
-{
- struct uircc_cb *self;
- struct irda_device *idev;
- int ret;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- if ((uircc_probe(iobase, iobase2, irq, dma)) == -1)
- return -1;
-
- /*
- * Allocate new instance of the driver
- */
- self = kmalloc( sizeof(struct uircc_cb), GFP_KERNEL);
- if (self == NULL) {
- printk(KERN_ERR "IrDA: Can't allocate memory for "
- "IrDA control block!\n");
- return -ENOMEM;
- }
- memset(self, 0, sizeof(struct uircc_cb));
-
- /* Need to store self somewhere */
- dev_self[i] = self;
-
- idev = &self->idev;
-
- /* Initialize IO */
- idev->io.iobase = iobase;
- idev->io.iobase2 = iobase2; /* Used by irport */
- idev->io.irq = irq;
- idev->io.io_ext = CHIP_IO_EXTENT;
- idev->io.io_ext2 = 8; /* Used by irport */
- idev->io.dma = dma;
- idev->io.fifo_size = 16;
-
- /* Lock the port that we need */
- ret = check_region(idev->io.iobase, idev->io.io_ext);
- if (ret < 0) {
- IRDA_DEBUG(0, __FUNCTION__ "(), can't get iobase of 0x%03x\n",
- idev->io.iobase);
- /* uircc_cleanup( self->idev); */
- return -ENODEV;
- }
- ret = check_region(idev->io.iobase2, idev->io.io_ext2);
- if (ret < 0) {
- IRDA_DEBUG(0, __FUNCTION__ "(), can't get iobase of 0x%03x\n",
- idev->io.iobase2);
- /* uircc_cleanup( self->idev); */
- return -ENODEV;
- }
- request_region(idev->io.iobase, idev->io.io_ext, idev->name);
- request_region(idev->io.iobase2, idev->io.io_ext2, idev->name);
-
- /* Initialize QoS for this device */
- irda_init_max_qos_capabilies(&idev->qos);
-
- /* The only value we must override it the baudrate */
- idev->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
- IR_115200/*IR_576000|IR_1152000 |(IR_4000000 << 8)*/;
-
- idev->qos.min_turn_time.bits = 0x0f;
- irda_qos_bits_to_value(&idev->qos);
-
- idev->flags = IFF_FIR|IFF_SIR|IFF_DMA|IFF_PIO;
-
- /* Specify which buffer allocation policy we need */
- idev->rx_buff.flags = GFP_KERNEL | GFP_DMA;
- idev->tx_buff.flags = GFP_KERNEL | GFP_DMA;
-
- /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
- idev->rx_buff.truesize = 4000;
- idev->tx_buff.truesize = 4000;
-
- /* Initialize callbacks */
- idev->change_speed = uircc_change_speed;
- idev->wait_until_sent = uircc_wait_until_sent;
- idev->is_receiving = uircc_is_receiving;
-
- /* Override the network functions we need to use */
- idev->netdev.init = uircc_net_init;
- idev->netdev.hard_start_xmit = uircc_hard_xmit;
- idev->netdev.open = uircc_net_open;
- idev->netdev.stop = uircc_net_close;
-
- irport_start(idev, iobase2);
-
- /* Open the IrDA device */
- irda_device_open(idev, driver_name, self);
-
- return 0;
-}
-
-/*
- * Function uircc_close (idev)
- *
- * Close driver instance
- *
- */
-#ifdef MODULE
-static int uircc_close(struct irda_device *idev)
-{
- struct uircc_cb *self;
- int iobase;
- int status;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- ASSERT(idev != NULL, return -1;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return -1;);
-
- iobase = idev->io.iobase;
- self = (struct uircc_cb *) idev->priv;
-
- /* Some magic to disable FIR and enable SIR */
- uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
-
- /* Disable modem */
- outb(0x00, iobase+UIRCC_CR10);
-
- irport_stop(idev, idev->io.iobase2);
-
- /* Release the PORT that this driver is using */
- IRDA_DEBUG(4, __FUNCTION__ "(), Releasing Region %03x\n", idev->io.iobase);
- release_region(idev->io.iobase, idev->io.io_ext);
-
- if (idev->io.iobase2) {
- IRDA_DEBUG(4, __FUNCTION__ "(), Releasing Region %03x\n",
- idev->io.iobase2);
- release_region(idev->io.iobase2, idev->io.io_ext2);
- }
- irda_device_close(idev);
-
- kfree(self);
-
- return 0;
-}
-#endif /* MODULE */
-
-/*
- * Function uircc_probe (iobase, board_addr, irq, dma)
- *
- * Returns non-negative on success.
- *
- */
-static int uircc_probe(int iobase, int iobase2, int irq, int dma)
-{
- int version;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- /* read the chip version, should be 0x03 */
- version = inb(iobase+UIRCC_SR8);
-
- if (version != 0x03) {
- IRDA_DEBUG(0, __FUNCTION__ "(), Wrong chip version");
- return -1;
- }
- printk(KERN_INFO "Sharp UIRCC IrDA driver loaded. Version: 0x%02x\n",
- version);
-
- /* Reset chip */
- outb(UIRCC_CR0_SYS_RST, iobase+UIRCC_CR0);
-
- /* Initialize some registers */
- outb(0x03, iobase+UIRCC_CR15);
- outb(0, iobase+UIRCC_CR11);
- outb(0, iobase+UIRCC_CR9);
-
- IRDA_DEBUG(0, __FUNCTION__ "(), sr15=%#x\n", inb(iobase+UIRCC_SR15));
-
- /* Enable DMA single mode */
- outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET,
- iobase+UIRCC_CR1);
-
- /* Disable interrupts */
- outb(0xff, iobase+UIRCC_CR2);
-
- /* Set self poll address */
-
- return 0;
-}
-
-/*
- * Function uircc_change_speed (idev, baud)
- *
- * Change the speed of the device
- *
- */
-static void uircc_change_speed(struct irda_device *idev, __u32 speed)
-{
- struct uircc_cb *self;
- int iobase;
- int modem = UIRCC_CR10_SIR;
- int status;
-
- IRDA_DEBUG(0, __FUNCTION__ "()\n");
-
- /* Just test the high speed stuff */
- /*speed = 4000000;*/
-
- ASSERT(idev != NULL, return;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
- self = idev->priv;
- iobase = idev->io.iobase;
-
- /* Update accounting for new speed */
- idev->io.baudrate = speed;
-
- /* Disable interrupts */
- outb(0xff, iobase+UIRCC_CR2);
-
- switch (speed) {
- case 9600:
- case 19200:
- case 37600:
- case 57600:
- case 115200:
- irport_start(idev, idev->io.iobase2);
- irport_change_speed(idev, speed);
-
- /* Some magic to disable FIR and enable SIR */
- uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
-
- modem = UIRCC_CR10_SIR;
- break;
- case 576000:
-
- IRDA_DEBUG(0, __FUNCTION__ "(), handling baud of 576000\n");
- break;
- case 1152000:
-
- IRDA_DEBUG(0, __FUNCTION__ "(), handling baud of 1152000\n");
- break;
- case 4000000:
- irport_stop(idev, idev->io.iobase2);
-
- /* Some magic to disable SIR and enable FIR */
- uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0001);
-
- modem = UIRCC_CR10_FIR;
- IRDA_DEBUG(0, __FUNCTION__ "(), handling baud of 4000000\n");
-
- /* Set self pole address */
- //outb(0xfe, iobase+UIRCC_CR8);
-
- /* outb(0x10, iobase+UIRCC_CR11); */
- break;
- default:
- IRDA_DEBUG( 0, __FUNCTION__ "(), unknown baud rate of %d\n", speed);
- break;
- }
-
- /* Set appropriate speed mode */
- outb(modem, iobase+UIRCC_CR10);
-
- idev->netdev.tbusy = 0;
-
- /* Enable some interrupts so we can receive frames */
- if (speed > 115200) {
- /* Enable DMA single mode */
- outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET,
- iobase+UIRCC_CR1);
-
- /* Enable all interrupts */
- outb(0, iobase+UIRCC_CR2);
- uircc_dma_receive(idev);
- }
-}
-
-/*
- * Function uircc_hard_xmit (skb, dev)
- *
- * Transmit the frame!
- *
- */
-static int uircc_hard_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct irda_device *idev;
- int iobase;
- int mtt;
-
- idev = (struct irda_device *) dev->priv;
-
- ASSERT(idev != NULL, return 0;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-
- iobase = idev->io.iobase;
-
- IRDA_DEBUG(4, __FUNCTION__ "(%ld), skb->len=%d\n", jiffies, (int) skb->len);
-
- /* Reset carrier latch */
- /*outb(0x02, iobase+UIRCC_CR0);*/
-
- /* Use irport for SIR speeds */
- if (idev->io.baudrate <= 115200) {
- return irport_hard_xmit(skb, dev);
- }
-
- IRDA_DEBUG(0, __FUNCTION__ "(), sr0=%#x, sr1=%#x, sr2=%#x, sr3=%#x, sr10=%#x, sr11=%#x\n",
- inb(iobase+UIRCC_SR0), inb(iobase+UIRCC_SR3),
- inb(iobase+UIRCC_SR2), inb(iobase+UIRCC_SR3),
- inb(iobase+UIRCC_SR10), inb(iobase+UIRCC_SR11));
-
- /* Lock transmit buffer */
- if (irda_lock((void *) &dev->tbusy) == FALSE)
- return -EBUSY;
-
- memcpy(idev->tx_buff.data, skb->data, skb->len);
-
- /* Make sure that the length is a multiple of 16 bits */
- if (skb->len & 0x01)
- skb->len++;
-
- idev->tx_buff.len = skb->len;
- idev->tx_buff.data = idev->tx_buff.head;
-
- mtt = irda_get_mtt(skb);
-
- /* Use udelay for delays less than 50 us. */
- if (mtt)
- udelay(mtt);
-
- /* Enable transmit interrupts */
- outb(0, iobase+UIRCC_CR2);
-
- uircc_dma_write(idev, iobase);
-
- dev_kfree_skb(skb);
-
- return 0;
-}
-
-/*
- * Function uircc_dma_write (idev, iobase)
- *
- * Transmit data using DMA
- *
- */
-static void uircc_dma_write(struct irda_device *idev, int iobase)
-{
- struct uircc_cb *self;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- ASSERT(idev != NULL, return;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
- self = idev->priv;
-
- /* Receiving disable */
- self->cr3 &= ~UIRCC_CR3_RECV_EN;
- outb(self->cr3, iobase+UIRCC_CR3);
-
- /* Set modem */
- outb(0x80, iobase+UIRCC_CR10);
-
- /* Enable transmit DMA */
- outb(UIRCC_CR1_TX_DMA|UIRCC_CR1_MUST_SET, iobase+UIRCC_CR1);
-
- ASSERT((((__u32)(idev->tx_buff.data)) & 0x01) != 0x01, return;);
-
- setup_dma(idev->io.dma, idev->tx_buff.data, idev->tx_buff.len,
- DMA_MODE_WRITE);
-
- idev->io.direction = IO_XMIT;
-
- /* Set frame length (should be the real length without padding */
- outb(idev->tx_buff.len & 0xff, iobase+UIRCC_CR4); /* Low byte */
- outb(idev->tx_buff.len >> 8, iobase+UIRCC_CR5); /* High byte */
-
- /* Enable transmit and transmit CRC */
- self->cr3 |= (UIRCC_CR3_XMIT_EN|UIRCC_CR3_TX_CRC_EN);
- outb(self->cr3, iobase+UIRCC_CR3);
-}
-
-/*
- * Function uircc_dma_xmit_complete (idev)
- *
- * The transfer of a frame in finished. This function will only be called
- * by the interrupt handler
- *
- */
-static void uircc_dma_xmit_complete( struct irda_device *idev, int underrun)
-{
- struct uircc_cb *self;
- int iobase;
- int len;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- ASSERT(idev != NULL, return;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return;);
-
- self = idev->priv;
-
- iobase = idev->io.iobase;
-
- /* Select TX counter */
- outb(UIRCC_CR0_CNT_SWT, iobase+UIRCC_CR0);
-
- /* Read TX length counter */
- len = inb(iobase+UIRCC_SR4); /* Low byte */
- len |= inb(iobase+UIRCC_SR5) << 8; /* High byte */
-
- IRDA_DEBUG(4, __FUNCTION__ "(), sent %d bytes\n", len);
-
- /* Disable transmit */
- self->cr3 &= ~UIRCC_CR3_XMIT_EN;
- outb(self->cr3, iobase+UIRCC_CR3);
-
- /* Transmit reset (just to be sure) */
- outb(UIRCC_CR0_XMIT_RST, iobase+UIRCC_CR0);
-
- /* Check for underrrun! */
- if (underrun) {
- idev->stats.tx_errors++;
- idev->stats.tx_fifo_errors++;
- } else {
- idev->stats.tx_packets++;
- idev->stats.tx_bytes += idev->tx_buff.len;
- }
-
- /* Unlock tx_buff and request another frame */
- idev->netdev.tbusy = 0; /* Unlock */
- idev->media_busy = FALSE;
-
- /* Tell the network layer, that we can accept more frames */
- mark_bh(NET_BH);
-}
-
-/*
- * Function uircc_dma_receive (idev)
- *
- * Get ready for receiving a frame. The device will initiate a DMA
- * if it starts to receive a frame.
- *
- */
-static int uircc_dma_receive(struct irda_device *idev)
-{
- struct uircc_cb *self;
- int iobase;
-
- ASSERT(idev != NULL, return -1;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return -1;);
-
- IRDA_DEBUG(4, __FUNCTION__ "\n");
-
- self = idev->priv;
- iobase= idev->io.iobase;
-
- /* Transmit disable */
- /* self->cr3 &= ~UIRCC_CR3_XMIT_EN; */
- self->cr3 = 0;
- outb(self->cr3, iobase+UIRCC_CR3);
-
- /* Transmit reset (just in case) */
- outb(UIRCC_CR0_XMIT_RST|0x17, iobase+UIRCC_CR0);
-
- /* Set modem */
- outb(0x08, iobase+UIRCC_CR10);
-
- /* Enable receiving with CRC */
- self->cr3 = (UIRCC_CR3_RECV_EN|UIRCC_CR3_RX_CRC_EN);
- outb(self->cr3, iobase+UIRCC_CR3);
-
- /* Make sure Rx DMA is set */
- outb(UIRCC_CR1_RX_DMA|UIRCC_CR1_MUST_SET, iobase+UIRCC_CR1);
-
- /* Rx reset */
- /* outb(UIRCC_CR0_RECV_RST, iobase+UIRCC_CR0); */
-
- setup_dma(idev->io.dma, idev->rx_buff.data,
- idev->rx_buff.truesize, DMA_MODE_READ);
-
- /* driver->media_busy = FALSE; */
- idev->io.direction = IO_RECV;
- idev->rx_buff.data = idev->rx_buff.head;
-
-#if 0
- /* Enable receiving with CRC */
- self->cr3 = (UIRCC_CR3_RECV_EN|UIRCC_CR3_RX_CRC_EN);
- outb(self->cr3, iobase+UIRCC_CR3);
-#endif
- IRDA_DEBUG(4, __FUNCTION__ "(), cr3=%#x\n", self->cr3);
-
- /* Address check? */
-
- return 0;
-}
-
-/*
- * Function uircc_dma_receive_complete (idev)
- *
- * Finished with receiving frames
- *
- *
- */
-static int uircc_dma_receive_complete(struct irda_device *idev, int iobase)
-{
- struct sk_buff *skb;
- struct uircc_cb *self;
- int len;
-
- self = idev->priv;
-
- IRDA_DEBUG(0, __FUNCTION__ "()\n");
-
- /* Check for CRC or framing error */
- if (inb(iobase+UIRCC_SR0) & UIRCC_SR0_RX_CRCFRM) {
- IRDA_DEBUG(0, __FUNCTION__ "(), CRC or FRAME error\n");
- return -1;
- }
-
- /* Select receive length counter */
- outb(0x00, iobase+UIRCC_CR0);
-
- /* Read frame length */
- len = inb(iobase+UIRCC_SR4); /* Low byte */
- len |= inb(iobase+UIRCC_SR5) << 8; /* High byte */
-
- IRDA_DEBUG(0, __FUNCTION__ "(), len=%d\n", len);
-
- /* Receiving disable */
- self->cr3 &= ~UIRCC_CR3_RECV_EN;
- outb(self->cr3, iobase+UIRCC_CR3);
-
- skb = dev_alloc_skb(len+1);
- if (skb == NULL) {
- printk(KERN_INFO __FUNCTION__
- "(), memory squeeze, dropping frame.\n");
- /* Restore bank register */
- return FALSE;
- }
-
- /* Make sure IP header gets aligned */
- skb_reserve(skb, 1);
-
- /* Copy frame without CRC */
- /* if ( idev->io.baudrate < 4000000) { */
-/* skb_put( skb, len-2); */
-/* memcpy( skb->data, idev->rx_buff.head, len-2); */
-/* } else { */
-/* skb_put( skb, len-4); */
-/* memcpy( skb->data, idev->rx_buff.head, len-4); */
-/* } */
-
- skb_put(skb, len);
- memcpy(skb->data, idev->rx_buff.data, len);
- idev->stats.rx_packets++;
-
- skb->dev = &idev->netdev;
- skb->mac.raw = skb->data;
- skb->protocol = htons(ETH_P_IRDA);
- netif_rx(skb);
-
- return TRUE;
-}
-
-/*
- * Function uircc_interrupt (irq, dev_id, regs)
- *
- * An interrupt from the chip has arrived. Time to do some work
- *
- */
-static void uircc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- __u8 sr3;
- int iobase;
-
- struct irda_device *idev = (struct irda_device *) dev_id;
-
- if (idev == NULL) {
- printk( KERN_WARNING "%s: irq %d for unknown device.\n",
- driver_name, irq);
- return;
- }
-
- if (idev->io.baudrate <= 115200)
- return irport_interrupt( irq, dev_id, regs);
-
- iobase = idev->io.iobase;
-
- /* Read interrupt status */
- sr3 = inb( iobase+UIRCC_SR3);
- if (!sr3) {
- IRDA_DEBUG(4,"**\n");
- return;
- }
- idev->netdev.interrupt = 1;
-
- IRDA_DEBUG(4, __FUNCTION__ "(), sr3=%#x, sr2=%#x, sr10=%#x\n",
- inb( iobase+UIRCC_SR3), inb( iobase+UIRCC_SR2),
- inb( iobase+UIRCC_SR10));
-
- /*
- * Check what interrupt this is. The UIRCC will not report two
- * different interrupts at the same time!
- */
- switch(sr3) {
- case UIRCC_SR3_RX_EOF: /* Check for end of frame */
- uircc_dma_receive_complete(idev, iobase);
- break;
- case UIRCC_SR3_TXUR: /* Check for transmit underrun */
- uircc_dma_xmit_complete(idev, TRUE);
- uircc_dma_receive(idev);
- outb(0, iobase+UIRCC_CR2);
- break;
- case UIRCC_SR3_TX_DONE:
- uircc_dma_xmit_complete(idev, FALSE);
- uircc_dma_receive(idev);
-
- outb(0x0d, iobase+UIRCC_CR2);
- break;
- case UIRCC_SR3_TMR_OUT:
- /* Disable timer */
- outb(inb(iobase+UIRCC_CR11) & ~UIRCC_CR11_TMR_EN,
- iobase+UIRCC_CR11);
- break;
- default:
- IRDA_DEBUG(0, __FUNCTION__ "(), unknown interrupt status=%#x\n",
- sr3);
- break;
- }
- idev->netdev.interrupt = 0;
-}
-
-/*
- * Function uircc_wait_until_sent (idev)
- *
- * This function should put the current thread to sleep until all data
- * have been sent, so it is safe to change the speed.
- */
-static void uircc_wait_until_sent( struct irda_device *idev)
-{
- /* Just delay 60 ms */
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(MSECS_TO_JIFFIES(60));
-}
-
-/*
- * Function uircc_is_receiving (idev)
- *
- * Return TRUE is we are currently receiving a frame
- *
- */
-static int uircc_is_receiving( struct irda_device *idev)
-{
- int status = FALSE;
- /* int iobase; */
-
- ASSERT(idev != NULL, return FALSE;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return FALSE;);
-
- if (idev->io.baudrate > 115200) {
-
- } else
- status = (idev->rx_buff.state != OUTSIDE_FRAME);
-
- return status;
-}
-
-/*
- * Function uircc_net_init (dev)
- *
- * Initialize network device
- *
- */
-static int uircc_net_init( struct net_device *dev)
-{
- IRDA_DEBUG( 4, __FUNCTION__ "()\n");
-
- /* Setup to be a normal IrDA network device driver */
- irda_device_setup(dev);
-
- /* Insert overrides below this line! */
-
- return 0;
-}
-
-
-/*
- * Function uircc_net_open (dev)
- *
- * Start the device
- *
- */
-static int uircc_net_open(struct net_device *dev)
-{
- struct irda_device *idev;
- int iobase;
-
- IRDA_DEBUG( 4, __FUNCTION__ "()\n");
-
- ASSERT(dev != NULL, return -1;);
- idev = (struct irda_device *) dev->priv;
-
- ASSERT(idev != NULL, return 0;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-
- iobase = idev->io.iobase;
-
- if (request_irq(idev->io.irq, uircc_interrupt, 0, idev->name,
- (void *) idev)) {
- return -EAGAIN;
- }
- /*
- * Always allocate the DMA channel after the IRQ,
- * and clean up on failure.
- */
- if (request_dma(idev->io.dma, idev->name)) {
- free_irq(idev->io.irq, idev);
- return -EAGAIN;
- }
-
- /* Ready to play! */
- irda_device_net_open(dev);
-
- /* turn on interrupts */
-
- MOD_INC_USE_COUNT;
-
- return 0;
-}
-
-/*
- * Function uircc_net_close (dev)
- *
- * Stop the device
- *
- */
-static int uircc_net_close(struct net_device *dev)
-{
- struct irda_device *idev;
- int iobase;
-
- IRDA_DEBUG(4, __FUNCTION__ "()\n");
-
- ASSERT(dev != NULL, return -1;);
- idev = (struct irda_device *) dev->priv;
-
- ASSERT(idev != NULL, return 0;);
- ASSERT(idev->magic == IRDA_DEVICE_MAGIC, return 0;);
-
- iobase = idev->io.iobase;
-
- irda_device_net_close(dev);
-
- disable_dma(idev->io.dma);
-
- /* Disable interrupts */
-
- free_irq(idev->io.irq, idev);
- free_dma(idev->io.dma);
-
- MOD_DEC_USE_COUNT;
-
- return 0;
-}
-
-/*
- * Function uircc_toshiba_cmd (arg0, arg1, arg2)
- *
- * disable FIR: uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0000);
- * enable FIR: uircc_toshiba_cmd(&status, 0xffff, 0x001b, 0x0001);
- * IRDA status: uircc_toshiba_cmd(&status, 0xfefe, 0x001b, 0x0000);
- */
-static int uircc_toshiba_cmd(int *retval, int arg0, int arg1, int arg2)
-{
- char return_code = 0;
-
- __asm__ volatile ("inb $0xb2,%%al; "
- "movb %%ah,%%al; "
- : /* Output */
- "=al" (return_code),
- "=ecx" (*retval)
- : /* Input */
- "ax" (arg0),
- "bx" (arg1),
- "cx" (arg2)
- );
- /*
- * Return
- * 0x00 = OK
- * 0x80 = Function not supported by system
- * 0x83 = Input data error
- */
- return (int) return_code;
-}
-
-#ifdef MODULE
-
-/*
- * Function init_module (void)
- *
- *
- *
- */
-int init_module(void)
-{
- return uircc_init();
-}
-
-/*
- * Function cleanup_module (void)
- *
- *
- *
- */
-void cleanup_module(void)
-{
- uircc_cleanup();
-}
-#endif /* MODULE */
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)