summaryrefslogtreecommitdiff
path: root/drivers/net/irda/ali-ircc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/irda/ali-ircc.c')
-rw-r--r--drivers/net/irda/ali-ircc.c2218
1 files changed, 0 insertions, 2218 deletions
diff --git a/drivers/net/irda/ali-ircc.c b/drivers/net/irda/ali-ircc.c
deleted file mode 100644
index 35f198d83701..000000000000
--- a/drivers/net/irda/ali-ircc.c
+++ /dev/null
@@ -1,2218 +0,0 @@
-/*********************************************************************
- *
- * Filename: ali-ircc.h
- * Version: 0.5
- * Description: Driver for the ALI M1535D and M1543C FIR Controller
- * Status: Experimental.
- * Author: Benjamin Kong <benjamin_kong@ali.com.tw>
- * Created at: 2000/10/16 03:46PM
- * Modified at: 2001/1/3 02:55PM
- * Modified by: Benjamin Kong <benjamin_kong@ali.com.tw>
- * Modified at: 2003/11/6 and support for ALi south-bridge chipsets M1563
- * Modified by: Clear Zhang <clear_zhang@ali.com.tw>
- *
- * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
- * 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.
- *
- ********************************************************************/
-
-#include <linux/module.h>
-#include <linux/gfp.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/serial_reg.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.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/irda_device.h>
-
-#include "ali-ircc.h"
-
-#define CHIP_IO_EXTENT 8
-#define BROKEN_DONGLE_ID
-
-#define ALI_IRCC_DRIVER_NAME "ali-ircc"
-
-/* Power Management */
-static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
-static int ali_ircc_resume(struct platform_device *dev);
-
-static struct platform_driver ali_ircc_driver = {
- .suspend = ali_ircc_suspend,
- .resume = ali_ircc_resume,
- .driver = {
- .name = ALI_IRCC_DRIVER_NAME,
- },
-};
-
-/* Module parameters */
-static int qos_mtt_bits = 0x07; /* 1 ms or more */
-
-/* Use BIOS settions by default, but user may supply module parameters */
-static unsigned int io[] = { ~0, ~0, ~0, ~0 };
-static unsigned int irq[] = { 0, 0, 0, 0 };
-static unsigned int dma[] = { 0, 0, 0, 0 };
-
-static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
-static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
-static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
-
-/* These are the currently known ALi south-bridge chipsets, the only one difference
- * is that M1543C doesn't support HP HDSL-3600
- */
-static ali_chip_t chips[] =
-{
- { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
- { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
- { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
- { NULL }
-};
-
-/* Max 4 instances for now */
-static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
-
-/* Dongle Types */
-static char *dongle_types[] = {
- "TFDS6000",
- "HP HSDL-3600",
- "HP HSDL-1100",
- "No dongle connected",
-};
-
-/* Some prototypes */
-static int ali_ircc_open(int i, chipio_t *info);
-
-static int ali_ircc_close(struct ali_ircc_cb *self);
-
-static int ali_ircc_setup(chipio_t *info);
-static int ali_ircc_is_receiving(struct ali_ircc_cb *self);
-static int ali_ircc_net_open(struct net_device *dev);
-static int ali_ircc_net_close(struct net_device *dev);
-static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
-
-/* SIR function */
-static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
-static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
-static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
-static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
-static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
-
-/* FIR function */
-static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
-static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
-static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
-static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
-static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
-static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
-
-/* My Function */
-static int ali_ircc_read_dongle_id (int i, chipio_t *info);
-static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
-
-/* ALi chip function */
-static void SIR2FIR(int iobase);
-static void FIR2SIR(int iobase);
-static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
-
-/*
- * Function ali_ircc_init ()
- *
- * Initialize chip. Find out whay kinds of chips we are dealing with
- * and their configuration registers address
- */
-static int __init ali_ircc_init(void)
-{
- ali_chip_t *chip;
- chipio_t info;
- int ret;
- int cfg, cfg_base;
- int reg, revision;
- int i = 0;
-
- ret = platform_driver_register(&ali_ircc_driver);
- if (ret) {
- net_err_ratelimited("%s, Can't register driver!\n",
- ALI_IRCC_DRIVER_NAME);
- return ret;
- }
-
- ret = -ENODEV;
-
- /* Probe for all the ALi chipsets we know about */
- for (chip= chips; chip->name; chip++, i++)
- {
- pr_debug("%s(), Probing for %s ...\n", __func__, chip->name);
-
- /* Try all config registers for this chip */
- for (cfg=0; cfg<2; cfg++)
- {
- cfg_base = chip->cfg[cfg];
- if (!cfg_base)
- continue;
-
- memset(&info, 0, sizeof(chipio_t));
- info.cfg_base = cfg_base;
- info.fir_base = io[i];
- info.dma = dma[i];
- info.irq = irq[i];
-
-
- /* Enter Configuration */
- outb(chip->entr1, cfg_base);
- outb(chip->entr2, cfg_base);
-
- /* Select Logical Device 5 Registers (UART2) */
- outb(0x07, cfg_base);
- outb(0x05, cfg_base+1);
-
- /* Read Chip Identification Register */
- outb(chip->cid_index, cfg_base);
- reg = inb(cfg_base+1);
-
- if (reg == chip->cid_value)
- {
- pr_debug("%s(), Chip found at 0x%03x\n",
- __func__, cfg_base);
-
- outb(0x1F, cfg_base);
- revision = inb(cfg_base+1);
- pr_debug("%s(), Found %s chip, revision=%d\n",
- __func__, chip->name, revision);
-
- /*
- * If the user supplies the base address, then
- * we init the chip, if not we probe the values
- * set by the BIOS
- */
- if (io[i] < 2000)
- {
- chip->init(chip, &info);
- }
- else
- {
- chip->probe(chip, &info);
- }
-
- if (ali_ircc_open(i, &info) == 0)
- ret = 0;
- i++;
- }
- else
- {
- pr_debug("%s(), No %s chip at 0x%03x\n",
- __func__, chip->name, cfg_base);
- }
- /* Exit configuration */
- outb(0xbb, cfg_base);
- }
- }
-
- if (ret)
- platform_driver_unregister(&ali_ircc_driver);
-
- return ret;
-}
-
-/*
- * Function ali_ircc_cleanup ()
- *
- * Close all configured chips
- *
- */
-static void __exit ali_ircc_cleanup(void)
-{
- int i;
-
- for (i=0; i < ARRAY_SIZE(dev_self); i++) {
- if (dev_self[i])
- ali_ircc_close(dev_self[i]);
- }
-
- platform_driver_unregister(&ali_ircc_driver);
-
-}
-
-static const struct net_device_ops ali_ircc_sir_ops = {
- .ndo_open = ali_ircc_net_open,
- .ndo_stop = ali_ircc_net_close,
- .ndo_start_xmit = ali_ircc_sir_hard_xmit,
- .ndo_do_ioctl = ali_ircc_net_ioctl,
-};
-
-static const struct net_device_ops ali_ircc_fir_ops = {
- .ndo_open = ali_ircc_net_open,
- .ndo_stop = ali_ircc_net_close,
- .ndo_start_xmit = ali_ircc_fir_hard_xmit,
- .ndo_do_ioctl = ali_ircc_net_ioctl,
-};
-
-/*
- * Function ali_ircc_open (int i, chipio_t *inf)
- *
- * Open driver instance
- *
- */
-static int ali_ircc_open(int i, chipio_t *info)
-{
- struct net_device *dev;
- struct ali_ircc_cb *self;
- int dongle_id;
- int err;
-
- if (i >= ARRAY_SIZE(dev_self)) {
- net_err_ratelimited("%s(), maximum number of supported chips reached!\n",
- __func__);
- return -ENOMEM;
- }
-
- /* Set FIR FIFO and DMA Threshold */
- if ((ali_ircc_setup(info)) == -1)
- return -1;
-
- dev = alloc_irdadev(sizeof(*self));
- if (dev == NULL) {
- net_err_ratelimited("%s(), can't allocate memory for control block!\n",
- __func__);
- return -ENOMEM;
- }
-
- self = netdev_priv(dev);
- self->netdev = dev;
- spin_lock_init(&self->lock);
-
- /* Need to store self somewhere */
- dev_self[i] = self;
- self->index = i;
-
- /* Initialize IO */
- self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
- self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
- self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
- self->io.irq = info->irq;
- self->io.fir_ext = CHIP_IO_EXTENT;
- self->io.dma = info->dma;
- self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
-
- /* Reserve the ioports that we need */
- if (!request_region(self->io.fir_base, self->io.fir_ext,
- ALI_IRCC_DRIVER_NAME)) {
- net_warn_ratelimited("%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);
-
- /* The only value we must override it the baudrate */
- self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
- IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
-
- 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;
- self->tx_buff.truesize = 14384;
-
- /* Allocate memory if needed */
- self->rx_buff.head =
- dma_zalloc_coherent(NULL, 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(NULL, 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 = &ali_ircc_sir_ops;
-
- err = register_netdev(dev);
- if (err) {
- net_err_ratelimited("%s(), register_netdev() failed!\n",
- __func__);
- goto err_out4;
- }
- net_info_ratelimited("IrDA: Registered device %s\n", dev->name);
-
- /* Check dongle id */
- dongle_id = ali_ircc_read_dongle_id(i, info);
- net_info_ratelimited("%s(), %s, Found dongle: %s\n",
- __func__, ALI_IRCC_DRIVER_NAME,
- dongle_types[dongle_id]);
-
- self->io.dongle_id = dongle_id;
-
-
- return 0;
-
- err_out4:
- dma_free_coherent(NULL, self->tx_buff.truesize,
- self->tx_buff.head, self->tx_buff_dma);
- err_out3:
- dma_free_coherent(NULL, self->rx_buff.truesize,
- self->rx_buff.head, self->rx_buff_dma);
- err_out2:
- release_region(self->io.fir_base, self->io.fir_ext);
- err_out1:
- dev_self[i] = NULL;
- free_netdev(dev);
- return err;
-}
-
-
-/*
- * Function ali_ircc_close (self)
- *
- * Close driver instance
- *
- */
-static int __exit ali_ircc_close(struct ali_ircc_cb *self)
-{
- int iobase;
-
- IRDA_ASSERT(self != NULL, return -1;);
-
- iobase = self->io.fir_base;
-
- /* 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(NULL, self->tx_buff.truesize,
- self->tx_buff.head, self->tx_buff_dma);
-
- if (self->rx_buff.head)
- dma_free_coherent(NULL, self->rx_buff.truesize,
- self->rx_buff.head, self->rx_buff_dma);
-
- dev_self[self->index] = NULL;
- free_netdev(self->netdev);
-
-
- return 0;
-}
-
-/*
- * Function ali_ircc_init_43 (chip, info)
- *
- * Initialize the ALi M1543 chip.
- */
-static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
-{
- /* All controller information like I/O address, DMA channel, IRQ
- * are set by BIOS
- */
-
- return 0;
-}
-
-/*
- * Function ali_ircc_init_53 (chip, info)
- *
- * Initialize the ALi M1535 chip.
- */
-static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
-{
- /* All controller information like I/O address, DMA channel, IRQ
- * are set by BIOS
- */
-
- return 0;
-}
-
-/*
- * Function ali_ircc_probe_53 (chip, info)
- *
- * Probes for the ALi M1535D or M1535
- */
-static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
-{
- int cfg_base = info->cfg_base;
- int hi, low, reg;
-
-
- /* Enter Configuration */
- outb(chip->entr1, cfg_base);
- outb(chip->entr2, cfg_base);
-
- /* Select Logical Device 5 Registers (UART2) */
- outb(0x07, cfg_base);
- outb(0x05, cfg_base+1);
-
- /* Read address control register */
- outb(0x60, cfg_base);
- hi = inb(cfg_base+1);
- outb(0x61, cfg_base);
- low = inb(cfg_base+1);
- info->fir_base = (hi<<8) + low;
-
- info->sir_base = info->fir_base;
-
- pr_debug("%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
-
- /* Read IRQ control register */
- outb(0x70, cfg_base);
- reg = inb(cfg_base+1);
- info->irq = reg & 0x0f;
- pr_debug("%s(), probing irq=%d\n", __func__, info->irq);
-
- /* Read DMA channel */
- outb(0x74, cfg_base);
- reg = inb(cfg_base+1);
- info->dma = reg & 0x07;
-
- if(info->dma == 0x04)
- net_warn_ratelimited("%s(), No DMA channel assigned !\n",
- __func__);
- else
- pr_debug("%s(), probing dma=%d\n", __func__, info->dma);
-
- /* Read Enabled Status */
- outb(0x30, cfg_base);
- reg = inb(cfg_base+1);
- info->enabled = (reg & 0x80) && (reg & 0x01);
- pr_debug("%s(), probing enabled=%d\n", __func__, info->enabled);
-
- /* Read Power Status */
- outb(0x22, cfg_base);
- reg = inb(cfg_base+1);
- info->suspended = (reg & 0x20);
- pr_debug("%s(), probing suspended=%d\n", __func__, info->suspended);
-
- /* Exit configuration */
- outb(0xbb, cfg_base);
-
-
- return 0;
-}
-
-/*
- * Function ali_ircc_setup (info)
- *
- * Set FIR FIFO and DMA Threshold
- * Returns non-negative on success.
- *
- */
-static int ali_ircc_setup(chipio_t *info)
-{
- unsigned char tmp;
- int version;
- int iobase = info->fir_base;
-
-
- /* Locking comments :
- * Most operations here need to be protected. We are called before
- * the device instance is created in ali_ircc_open(), therefore
- * nobody can bother us - Jean II */
-
- /* Switch to FIR space */
- SIR2FIR(iobase);
-
- /* Master Reset */
- outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
-
- /* Read FIR ID Version Register */
- switch_bank(iobase, BANK3);
- version = inb(iobase+FIR_ID_VR);
-
- /* Should be 0x00 in the M1535/M1535D */
- if(version != 0x00)
- {
- net_err_ratelimited("%s, Wrong chip version %02x\n",
- ALI_IRCC_DRIVER_NAME, version);
- return -1;
- }
-
- /* Set FIR FIFO Threshold Register */
- switch_bank(iobase, BANK1);
- outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
-
- /* Set FIR DMA Threshold Register */
- outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
-
- /* CRC enable */
- switch_bank(iobase, BANK2);
- outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
-
- /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
-
- /* Switch to Bank 0 */
- switch_bank(iobase, BANK0);
-
- tmp = inb(iobase+FIR_LCR_B);
- tmp &=~0x20; // disable SIP
- tmp |= 0x80; // these two steps make RX mode
- tmp &= 0xbf;
- outb(tmp, iobase+FIR_LCR_B);
-
- /* Disable Interrupt */
- outb(0x00, iobase+FIR_IER);
-
-
- /* Switch to SIR space */
- FIR2SIR(iobase);
-
- net_info_ratelimited("%s, driver loaded (Benjamin Kong)\n",
- ALI_IRCC_DRIVER_NAME);
-
- /* Enable receive interrupts */
- // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
- // Turn on the interrupts in ali_ircc_net_open
-
-
- return 0;
-}
-
-/*
- * Function ali_ircc_read_dongle_id (int index, info)
- *
- * Try to read dongle identification. This procedure needs to be executed
- * once after power-on/reset. It also needs to be used whenever you suspect
- * that the user may have plugged/unplugged the IrDA Dongle.
- */
-static int ali_ircc_read_dongle_id (int i, chipio_t *info)
-{
- int dongle_id, reg;
- int cfg_base = info->cfg_base;
-
-
- /* Enter Configuration */
- outb(chips[i].entr1, cfg_base);
- outb(chips[i].entr2, cfg_base);
-
- /* Select Logical Device 5 Registers (UART2) */
- outb(0x07, cfg_base);
- outb(0x05, cfg_base+1);
-
- /* Read Dongle ID */
- outb(0xf0, cfg_base);
- reg = inb(cfg_base+1);
- dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
- pr_debug("%s(), probing dongle_id=%d, dongle_types=%s\n",
- __func__, dongle_id, dongle_types[dongle_id]);
-
- /* Exit configuration */
- outb(0xbb, cfg_base);
-
-
- return dongle_id;
-}
-
-/*
- * Function ali_ircc_interrupt (irq, dev_id, regs)
- *
- * An interrupt from the chip has arrived. Time to do some work
- *
- */
-static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct ali_ircc_cb *self;
- int ret;
-
-
- self = netdev_priv(dev);
-
- spin_lock(&self->lock);
-
- /* Dispatch interrupt handler for the current speed */
- if (self->io.speed > 115200)
- ret = ali_ircc_fir_interrupt(self);
- else
- ret = ali_ircc_sir_interrupt(self);
-
- spin_unlock(&self->lock);
-
- return ret;
-}
-/*
- * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
- *
- * Handle MIR/FIR interrupt
- *
- */
-static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
-{
- __u8 eir, OldMessageCount;
- int iobase, tmp;
-
-
- iobase = self->io.fir_base;
-
- switch_bank(iobase, BANK0);
- self->InterruptID = inb(iobase+FIR_IIR);
- self->BusStatus = inb(iobase+FIR_BSR);
-
- OldMessageCount = (self->LineStatus + 1) & 0x07;
- self->LineStatus = inb(iobase+FIR_LSR);
- //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM
- eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
-
- pr_debug("%s(), self->InterruptID = %x\n", __func__, self->InterruptID);
- pr_debug("%s(), self->LineStatus = %x\n", __func__, self->LineStatus);
- pr_debug("%s(), self->ier = %x\n", __func__, self->ier);
- pr_debug("%s(), eir = %x\n", __func__, eir);
-
- /* Disable interrupts */
- SetCOMInterrupts(self, FALSE);
-
- /* Tx or Rx Interrupt */
-
- if (eir & IIR_EOM)
- {
- if (self->io.direction == IO_XMIT) /* TX */
- {
- pr_debug("%s(), ******* IIR_EOM (Tx) *******\n",
- __func__);
-
- if(ali_ircc_dma_xmit_complete(self))
- {
- if (irda_device_txqueue_empty(self->netdev))
- {
- /* Prepare for receive */
- ali_ircc_dma_receive(self);
- self->ier = IER_EOM;
- }
- }
- else
- {
- self->ier = IER_EOM;
- }
-
- }
- else /* RX */
- {
- pr_debug("%s(), ******* IIR_EOM (Rx) *******\n",
- __func__);
-
- if(OldMessageCount > ((self->LineStatus+1) & 0x07))
- {
- self->rcvFramesOverflow = TRUE;
- pr_debug("%s(), ******* self->rcvFramesOverflow = TRUE ********\n",
- __func__);
- }
-
- if (ali_ircc_dma_receive_complete(self))
- {
- pr_debug("%s(), ******* receive complete ********\n",
- __func__);
-
- self->ier = IER_EOM;
- }
- else
- {
- pr_debug("%s(), ******* Not receive complete ********\n",
- __func__);
-
- self->ier = IER_EOM | IER_TIMER;
- }
-
- }
- }
- /* Timer Interrupt */
- else if (eir & IIR_TIMER)
- {
- if(OldMessageCount > ((self->LineStatus+1) & 0x07))
- {
- self->rcvFramesOverflow = TRUE;
- pr_debug("%s(), ******* self->rcvFramesOverflow = TRUE *******\n",
- __func__);
- }
- /* Disable Timer */
- switch_bank(iobase, BANK1);
- tmp = inb(iobase+FIR_CR);
- outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
-
- /* Check if this is a Tx timer interrupt */
- if (self->io.direction == IO_XMIT)
- {
- ali_ircc_dma_xmit(self);
-
- /* Interrupt on EOM */
- self->ier = IER_EOM;
-
- }
- else /* Rx */
- {
- if(ali_ircc_dma_receive_complete(self))
- {
- self->ier = IER_EOM;
- }
- else
- {
- self->ier = IER_EOM | IER_TIMER;
- }
- }
- }
-
- /* Restore Interrupt */
- SetCOMInterrupts(self, TRUE);
-
- return IRQ_RETVAL(eir);
-}
-
-/*
- * Function ali_ircc_sir_interrupt (irq, self, eir)
- *
- * Handle SIR interrupt
- *
- */
-static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
-{
- int iobase;
- int iir, lsr;
-
-
- iobase = self->io.sir_base;
-
- iir = inb(iobase+UART_IIR) & UART_IIR_ID;
- if (iir) {
- /* Clear interrupt */
- lsr = inb(iobase+UART_LSR);
-
- pr_debug("%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
- __func__, iir, lsr, iobase);
-
- switch (iir)
- {
- case UART_IIR_RLSI:
- pr_debug("%s(), RLSI\n", __func__);
- break;
- case UART_IIR_RDI:
- /* Receive interrupt */
- ali_ircc_sir_receive(self);
- break;
- case UART_IIR_THRI:
- if (lsr & UART_LSR_THRE)
- {
- /* Transmitter ready for data */
- ali_ircc_sir_write_wakeup(self);
- }
- break;
- default:
- pr_debug("%s(), unhandled IIR=%#x\n",
- __func__, iir);
- break;
- }
-
- }
-
-
- return IRQ_RETVAL(iir);
-}
-
-
-/*
- * Function ali_ircc_sir_receive (self)
- *
- * Receive one frame from the infrared port
- *
- */
-static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
-{
- int boguscount = 0;
- int iobase;
-
- IRDA_ASSERT(self != NULL, return;);
-
- iobase = self->io.sir_base;
-
- /*
- * Receive all characters in Rx FIFO, unwrap and unstuff them.
- * async_unwrap_char will deliver all found frames
- */
- do {
- async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
- inb(iobase+UART_RX));
-
- /* Make sure we don't stay here too long */
- if (boguscount++ > 32) {
- pr_debug("%s(), breaking!\n", __func__);
- break;
- }
- } while (inb(iobase+UART_LSR) & UART_LSR_DR);
-
-}
-
-/*
- * Function ali_ircc_sir_write_wakeup (tty)
- *
- * Called by the driver when there's room for more data. If we have
- * more packets to send, we send them here.
- *
- */
-static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
-{
- int actual = 0;
- int iobase;
-
- IRDA_ASSERT(self != NULL, return;);
-
-
- iobase = self->io.sir_base;
-
- /* Finished with frame? */
- if (self->tx_buff.len > 0)
- {
- /* Write data left in transmit buffer */
- actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
- self->tx_buff.data, self->tx_buff.len);
- self->tx_buff.data += actual;
- self->tx_buff.len -= actual;
- }
- else
- {
- if (self->new_speed)
- {
- /* We must wait until all data are gone */
- while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
- pr_debug("%s(), UART_LSR_THRE\n", __func__);
-
- pr_debug("%s(), Changing speed! self->new_speed = %d\n",
- __func__, self->new_speed);
- ali_ircc_change_speed(self, self->new_speed);
- self->new_speed = 0;
-
- // benjamin 2000/11/10 06:32PM
- if (self->io.speed > 115200)
- {
- pr_debug("%s(), ali_ircc_change_speed from UART_LSR_TEMT\n",
- __func__);
-
- self->ier = IER_EOM;
- // SetCOMInterrupts(self, TRUE);
- return;
- }
- }
- else
- {
- netif_wake_queue(self->netdev);
- }
-
- self->netdev->stats.tx_packets++;
-
- /* Turn on receive interrupts */
- outb(UART_IER_RDI, iobase+UART_IER);
- }
-
-}
-
-static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
-{
- struct net_device *dev = self->netdev;
- int iobase;
-
-
- pr_debug("%s(), setting speed = %d\n", __func__, baud);
-
- /* This function *must* be called with irq off and spin-lock.
- * - Jean II */
-
- iobase = self->io.fir_base;
-
- SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
-
- /* Go to MIR, FIR Speed */
- if (baud > 115200)
- {
-
-
- ali_ircc_fir_change_speed(self, baud);
-
- /* Install FIR xmit handler*/
- dev->netdev_ops = &ali_ircc_fir_ops;
-
- /* Enable Interuupt */
- self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
-
- /* Be ready for incoming frames */
- ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete
- }
- /* Go to SIR Speed */
- else
- {
- ali_ircc_sir_change_speed(self, baud);
-
- /* Install SIR xmit handler*/
- dev->netdev_ops = &ali_ircc_sir_ops;
- }
-
-
- SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM
-
- netif_wake_queue(self->netdev);
-
-}
-
-static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
-{
-
- int iobase;
- struct ali_ircc_cb *self = priv;
- struct net_device *dev;
-
-
- IRDA_ASSERT(self != NULL, return;);
-
- dev = self->netdev;
- iobase = self->io.fir_base;
-
- pr_debug("%s(), self->io.speed = %d, change to speed = %d\n",
- __func__, self->io.speed, baud);
-
- /* Come from SIR speed */
- if(self->io.speed <=115200)
- {
- SIR2FIR(iobase);
- }
-
- /* Update accounting for new speed */
- self->io.speed = baud;
-
- // Set Dongle Speed mode
- ali_ircc_change_dongle_speed(self, baud);
-
-}
-
-/*
- * Function ali_sir_change_speed (self, speed)
- *
- * Set speed of IrDA port to specified baudrate
- *
- */
-static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
-{
- struct ali_ircc_cb *self = priv;
- int iobase;
- int fcr; /* FIFO control reg */
- int lcr; /* Line control reg */
- int divisor;
-
-
- pr_debug("%s(), Setting speed to: %d\n", __func__, speed);
-
- IRDA_ASSERT(self != NULL, return;);
-
- iobase = self->io.sir_base;
-
- /* Come from MIR or FIR speed */
- if(self->io.speed >115200)
- {
- // Set Dongle Speed mode first
- ali_ircc_change_dongle_speed(self, speed);
-
- FIR2SIR(iobase);
- }
-
- // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
-
- inb(iobase+UART_LSR);
- inb(iobase+UART_SCR);
-
- /* Update accounting for new speed */
- self->io.speed = speed;
-
- divisor = 115200/speed;
-
- fcr = UART_FCR_ENABLE_FIFO;
-
- /*
- * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
- * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
- * about this timeout since it will always be fast enough.
- */
- if (self->io.speed < 38400)
- fcr |= UART_FCR_TRIGGER_1;
- else
- fcr |= UART_FCR_TRIGGER_14;
-
- /* IrDA ports use 8N1 */
- lcr = UART_LCR_WLEN8;
-
- outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
- outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */
- outb(divisor >> 8, iobase+UART_DLM);
- outb(lcr, iobase+UART_LCR); /* Set 8N1 */
- outb(fcr, iobase+UART_FCR); /* Enable FIFO's */
-
- /* without this, the connection will be broken after come back from FIR speed,
- but with this, the SIR connection is harder to established */
- outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
-}
-
-static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
-{
-
- struct ali_ircc_cb *self = priv;
- int iobase,dongle_id;
- int tmp = 0;
-
-
- iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */
- dongle_id = self->io.dongle_id;
-
- /* We are already locked, no need to do it again */
-
- pr_debug("%s(), Set Speed for %s , Speed = %d\n",
- __func__, dongle_types[dongle_id], speed);
-
- switch_bank(iobase, BANK2);
- tmp = inb(iobase+FIR_IRDA_CR);
-
- /* IBM type dongle */
- if(dongle_id == 0)
- {
- if(speed == 4000000)
- {
- // __ __
- // SD/MODE __| |__ __
- // __ __
- // IRTX __ __| |__
- // T1 T2 T3 T4 T5
-
- tmp &= ~IRDA_CR_HDLC; // HDLC=0
- tmp |= IRDA_CR_CRC; // CRC=1
-
- switch_bank(iobase, BANK2);
- outb(tmp, iobase+FIR_IRDA_CR);
-
- // T1 -> SD/MODE:0 IRTX:0
- tmp &= ~0x09;
- tmp |= 0x02;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // T2 -> SD/MODE:1 IRTX:0
- tmp &= ~0x01;
- tmp |= 0x0a;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // T3 -> SD/MODE:1 IRTX:1
- tmp |= 0x0b;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // T4 -> SD/MODE:0 IRTX:1
- tmp &= ~0x08;
- tmp |= 0x03;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // T5 -> SD/MODE:0 IRTX:0
- tmp &= ~0x09;
- tmp |= 0x02;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // reset -> Normal TX output Signal
- outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
- }
- else /* speed <=1152000 */
- {
- // __
- // SD/MODE __| |__
- //
- // IRTX ________
- // T1 T2 T3
-
- /* MIR 115200, 57600 */
- if (speed==1152000)
- {
- tmp |= 0xA0; //HDLC=1, 1.152Mbps=1
- }
- else
- {
- tmp &=~0x80; //HDLC 0.576Mbps
- tmp |= 0x20; //HDLC=1,
- }
-
- tmp |= IRDA_CR_CRC; // CRC=1
-
- switch_bank(iobase, BANK2);
- outb(tmp, iobase+FIR_IRDA_CR);
-
- /* MIR 115200, 57600 */
-
- //switch_bank(iobase, BANK2);
- // T1 -> SD/MODE:0 IRTX:0
- tmp &= ~0x09;
- tmp |= 0x02;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // T2 -> SD/MODE:1 IRTX:0
- tmp &= ~0x01;
- tmp |= 0x0a;
- outb(tmp, iobase+FIR_IRDA_CR);
-
- // T3 -> SD/MODE:0 IRTX:0
- tmp &= ~0x09;
- tmp |= 0x02;
- outb(tmp, iobase+FIR_IRDA_CR);
- udelay(2);
-
- // reset -> Normal TX output Signal
- outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
- }
- }
- else if (dongle_id == 1) /* HP HDSL-3600 */
- {
- switch(speed)
- {
- case 4000000:
- tmp &= ~IRDA_CR_HDLC; // HDLC=0
- break;
-
- case 1152000:
- tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
- break;
-
- case 576000:
- tmp &=~0x80; // HDLC 0.576Mbps
- tmp |= 0x20; // HDLC=1,
- break;
- }
-
- tmp |= IRDA_CR_CRC; // CRC=1
-
- switch_bank(iobase, BANK2);
- outb(tmp, iobase+FIR_IRDA_CR);
- }
- else /* HP HDSL-1100 */
- {
- if(speed <= 115200) /* SIR */
- {
-
- tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0
-
- switch_bank(iobase, BANK2);
- outb(tmp, iobase+FIR_IRDA_CR);
- }
- else /* MIR FIR */
- {
-
- switch(speed)
- {
- case 4000000:
- tmp &= ~IRDA_CR_HDLC; // HDLC=0
- break;
-
- case 1152000:
- tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
- break;
-
- case 576000:
- tmp &=~0x80; // HDLC 0.576Mbps
- tmp |= 0x20; // HDLC=1,
- break;
- }
-
- tmp |= IRDA_CR_CRC; // CRC=1
- tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1
-
- switch_bank(iobase, BANK2);
- outb(tmp, iobase+FIR_IRDA_CR);
- }
- }
-
- switch_bank(iobase, BANK0);
-
-}
-
-/*
- * Function ali_ircc_sir_write (driver)
- *
- * Fill Tx FIFO with transmit data
- *
- */
-static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
-{
- int actual = 0;
-
-
- /* Tx FIFO should be empty! */
- if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
- pr_debug("%s(), failed, fifo not empty!\n", __func__);
- return 0;
- }
-
- /* Fill FIFO with current frame */
- while ((fifo_size-- > 0) && (actual < len)) {
- /* Transmit next byte */
- outb(buf[actual], iobase+UART_TX);
-
- actual++;
- }
-
- return actual;
-}
-
-/*
- * Function ali_ircc_net_open (dev)
- *
- * Start the device
- *
- */
-static int ali_ircc_net_open(struct net_device *dev)
-{
- struct ali_ircc_cb *self;
- int iobase;
- char hwname[32];
-
-
- IRDA_ASSERT(dev != NULL, return -1;);
-
- self = netdev_priv(dev);
-
- IRDA_ASSERT(self != NULL, return 0;);
-
- iobase = self->io.fir_base;
-
- /* Request IRQ and install Interrupt Handler */
- if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
- {
- net_warn_ratelimited("%s, unable to allocate irq=%d\n",
- ALI_IRCC_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",
- ALI_IRCC_DRIVER_NAME, self->io.dma);
- free_irq(self->io.irq, dev);
- return -EAGAIN;
- }
-
- /* Turn on interrups */
- outb(UART_IER_RDI , iobase+UART_IER);
-
- /* Ready to play! */
- netif_start_queue(dev); //benjamin by irport
-
- /* Give self a hardware name */
- sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
-
- /*
- * Open new IrLAP layer instance, now that everything should be
- * initialized properly
- */
- self->irlap = irlap_open(dev, &self->qos, hwname);
-
-
- return 0;
-}
-
-/*
- * Function ali_ircc_net_close (dev)
- *
- * Stop the device
- *
- */
-static int ali_ircc_net_close(struct net_device *dev)
-{
-
- struct ali_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;
-
- disable_dma(self->io.dma);
-
- /* Disable interrupts */
- SetCOMInterrupts(self, FALSE);
-
- free_irq(self->io.irq, dev);
- free_dma(self->io.dma);
-
-
- return 0;
-}
-
-/*
- * Function ali_ircc_fir_hard_xmit (skb, dev)
- *
- * Transmit the frame
- *
- */
-static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct ali_ircc_cb *self;
- unsigned long flags;
- int iobase;
- __u32 speed;
- int mtt, diff;
-
-
- self = netdev_priv(dev);
- iobase = self->io.fir_base;
-
- netif_stop_queue(dev);
-
- /* Make sure tests *& speed change are atomic */
- spin_lock_irqsave(&self->lock, flags);
-
- /* Note : you should make sure that speed changes are not going
- * to corrupt any outgoing frame. Look at nsc-ircc for the gory
- * details - Jean II */
-
- /* 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) {
- ali_ircc_change_speed(self, speed);
- netif_trans_update(dev);
- spin_unlock_irqrestore(&self->lock, flags);
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- } else
- self->new_speed = speed;
- }
-
- /* Register and copy this frame to DMA memory */
- 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++;
-
- /* Start transmit only if there is currently no transmit going on */
- if (self->tx_fifo.len == 1)
- {
- /* Check if we must wait the min turn time or not */
- mtt = irda_get_mtt(skb);
-
- if (mtt)
- {
- /* Check how much time we have used already */
- diff = ktime_us_delta(ktime_get(), self->stamp);
- /* self->stamp is set from ali_ircc_dma_receive_complete() */
-
- pr_debug("%s(), ******* diff = %d *******\n",
- __func__, diff);
-
- /* Check if the mtt is larger than the time we have
- * already used by all the protocol processing
- */
- if (mtt > diff)
- {
- mtt -= diff;
-
- /*
- * Use timer if delay larger than 1000 us, and
- * use udelay for smaller values which should
- * be acceptable
- */
- if (mtt > 500)
- {
- /* Adjust for timer resolution */
- mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
-
- pr_debug("%s(), ************** mtt = %d ***********\n",
- __func__, mtt);
-
- /* Setup timer */
- if (mtt == 1) /* 500 us */
- {
- switch_bank(iobase, BANK1);
- outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
- }
- else if (mtt == 2) /* 1 ms */
- {
- switch_bank(iobase, BANK1);
- outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
- }
- else /* > 2ms -> 4ms */
- {
- switch_bank(iobase, BANK1);
- outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
- }
-
-
- /* Start timer */
- outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
- self->io.direction = IO_XMIT;
-
- /* Enable timer interrupt */
- self->ier = IER_TIMER;
- SetCOMInterrupts(self, TRUE);
-
- /* Timer will take care of the rest */
- goto out;
- }
- else
- udelay(mtt);
- } // if (if (mtt > diff)
- }// if (mtt)
-
- /* Enable EOM interrupt */
- self->ier = IER_EOM;
- SetCOMInterrupts(self, TRUE);
-
- /* Transmit frame */
- ali_ircc_dma_xmit(self);
- } // if (self->tx_fifo.len == 1)
-
- out:
-
- /* Not busy transmitting anymore if window is not full */
- if (self->tx_fifo.free < MAX_TX_WINDOW)
- netif_wake_queue(self->netdev);
-
- /* Restore bank register */
- switch_bank(iobase, BANK0);
-
- netif_trans_update(dev);
- spin_unlock_irqrestore(&self->lock, flags);
- dev_kfree_skb(skb);
-
- return NETDEV_TX_OK;
-}
-
-
-static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
-{
- int iobase, tmp;
- unsigned char FIFO_OPTI, Hi, Lo;
-
-
-
- iobase = self->io.fir_base;
-
- /* FIFO threshold , this method comes from NDIS5 code */
-
- if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
- FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
- else
- FIFO_OPTI = TX_FIFO_Threshold;
-
- /* Disable DMA */
- switch_bank(iobase, BANK1);
- outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
-
- self->io.direction = IO_XMIT;
-
- 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);
-
- /* Reset Tx FIFO */
- switch_bank(iobase, BANK0);
- outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
-
- /* Set Tx FIFO threshold */
- if (self->fifo_opti_buf!=FIFO_OPTI)
- {
- switch_bank(iobase, BANK1);
- outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
- self->fifo_opti_buf=FIFO_OPTI;
- }
-
- /* Set Tx DMA threshold */
- switch_bank(iobase, BANK1);
- outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
-
- /* Set max Tx frame size */
- Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
- Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
- switch_bank(iobase, BANK2);
- outb(Hi, iobase+FIR_TX_DSR_HI);
- outb(Lo, iobase+FIR_TX_DSR_LO);
-
- /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
- switch_bank(iobase, BANK0);
- tmp = inb(iobase+FIR_LCR_B);
- tmp &= ~0x20; // Disable SIP
- outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
- pr_debug("%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n",
- __func__, inb(iobase + FIR_LCR_B));
-
- outb(0, iobase+FIR_LSR);
-
- /* Enable DMA and Burst Mode */
- switch_bank(iobase, BANK1);
- outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
-
- switch_bank(iobase, BANK0);
-
-}
-
-static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
-{
- int iobase;
- int ret = TRUE;
-
-
- iobase = self->io.fir_base;
-
- /* Disable DMA */
- switch_bank(iobase, BANK1);
- outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
-
- /* Check for underrun! */
- switch_bank(iobase, BANK0);
- if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
-
- {
- net_err_ratelimited("%s(), ********* LSR_FRAME_ABORT *********\n",
- __func__);
- self->netdev->stats.tx_errors++;
- self->netdev->stats.tx_fifo_errors++;
- }
- else
- {
- self->netdev->stats.tx_packets++;
- }
-
- /* Check if we need to change the speed */
- if (self->new_speed)
- {
- ali_ircc_change_speed(self, self->new_speed);
- self->new_speed = 0;
- }
-
- /* Finished with this frame, so prepare for next */
- self->tx_fifo.ptr++;
- self->tx_fifo.len--;
-
- /* Any frames to be sent back-to-back? */
- if (self->tx_fifo.len)
- {
- ali_ircc_dma_xmit(self);
-
- /* Not finished yet! */
- ret = FALSE;
- }
- else
- { /* 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;
- }
-
- /* Make sure we have room for more frames */
- if (self->tx_fifo.free < MAX_TX_WINDOW) {
- /* Not busy transmitting anymore */
- /* Tell the network layer, that we can accept more frames */
- netif_wake_queue(self->netdev);
- }
-
- switch_bank(iobase, BANK0);
-
- return ret;
-}
-
-/*
- * Function ali_ircc_dma_receive (self)
- *
- * Get ready for receiving a frame. The device will initiate a DMA
- * if it starts to receive a frame.
- *
- */
-static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
-{
- int iobase, tmp;
-
-
- iobase = self->io.fir_base;
-
- /* 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;
-
- /* Disable DMA */
- switch_bank(iobase, BANK1);
- outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
-
- /* Reset Message Count */
- switch_bank(iobase, BANK0);
- outb(0x07, iobase+FIR_LSR);
-
- self->rcvFramesOverflow = FALSE;
-
- self->LineStatus = inb(iobase+FIR_LSR) ;
-
- /* Reset Rx FIFO info */
- self->io.direction = IO_RECV;
- self->rx_buff.data = self->rx_buff.head;
-
- /* Reset Rx FIFO */
- // switch_bank(iobase, BANK0);
- outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
-
- self->st_fifo.len = self->st_fifo.pending_bytes = 0;
- self->st_fifo.tail = self->st_fifo.head = 0;
-
- irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
- DMA_RX_MODE);
-
- /* Set Receive Mode,Brick Wall */
- //switch_bank(iobase, BANK0);
- tmp = inb(iobase+FIR_LCR_B);
- outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
- pr_debug("%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n",
- __func__, inb(iobase + FIR_LCR_B));
-
- /* Set Rx Threshold */
- switch_bank(iobase, BANK1);
- outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
- outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
-
- /* Enable DMA and Burst Mode */
- // switch_bank(iobase, BANK1);
- outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
-
- switch_bank(iobase, BANK0);
- return 0;
-}
-
-static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
-{
- struct st_fifo *st_fifo;
- struct sk_buff *skb;
- __u8 status, MessageCount;
- int len, i, iobase, val;
-
- st_fifo = &self->st_fifo;
- iobase = self->io.fir_base;
-
- switch_bank(iobase, BANK0);
- MessageCount = inb(iobase+ FIR_LSR)&0x07;
-
- if (MessageCount > 0)
- pr_debug("%s(), Message count = %d\n", __func__, MessageCount);
-
- for (i=0; i<=MessageCount; i++)
- {
- /* Bank 0 */
- switch_bank(iobase, BANK0);
- status = inb(iobase+FIR_LSR);
-
- switch_bank(iobase, BANK2);
- len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
- len = len << 8;
- len |= inb(iobase+FIR_RX_DSR_LO);
-
- pr_debug("%s(), RX Length = 0x%.2x,\n", __func__ , len);
- pr_debug("%s(), RX Status = 0x%.2x,\n", __func__ , status);
-
- if (st_fifo->tail >= MAX_RX_WINDOW) {
- pr_debug("%s(), window is full!\n", __func__);
- continue;
- }
-
- 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++;
- }
-
- for (i=0; i<=MessageCount; i++)
- {
- /* Get first entry */
- status = st_fifo->entries[st_fifo->head].status;
- len = st_fifo->entries[st_fifo->head].len;
- st_fifo->pending_bytes -= len;
- st_fifo->head++;
- st_fifo->len--;
-
- /* Check for errors */
- if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
- {
- pr_debug("%s(), ************* RX Errors ************\n",
- __func__);
-
- /* Skip frame */
- self->netdev->stats.rx_errors++;
-
- self->rx_buff.data += len;
-
- if (status & LSR_FIFO_UR)
- {
- self->netdev->stats.rx_frame_errors++;
- pr_debug("%s(), ************* FIFO Errors ************\n",
- __func__);
- }
- if (status & LSR_FRAME_ERROR)
- {
- self->netdev->stats.rx_frame_errors++;
- pr_debug("%s(), ************* FRAME Errors ************\n",
- __func__);
- }
-
- if (status & LSR_CRC_ERROR)
- {
- self->netdev->stats.rx_crc_errors++;
- pr_debug("%s(), ************* CRC Errors ************\n",
- __func__);
- }
-
- if(self->rcvFramesOverflow)
- {
- self->netdev->stats.rx_frame_errors++;
- pr_debug("%s(), ************* Overran DMA buffer ************\n",
- __func__);
- }
- if(len == 0)
- {
- self->netdev->stats.rx_frame_errors++;
- pr_debug("%s(), ********** Receive Frame Size = 0 *********\n",
- __func__);
- }
- }
- else
- {
-
- if (st_fifo->pending_bytes < 32)
- {
- switch_bank(iobase, BANK0);
- val = inb(iobase+FIR_BSR);
- if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
- {
- pr_debug("%s(), ************* BSR_FIFO_NOT_EMPTY ************\n",
- __func__);
-
- /* Put this entry back in fifo */
- st_fifo->head--;
- st_fifo->len++;
- st_fifo->pending_bytes += len;
- st_fifo->entries[st_fifo->head].status = status;
- st_fifo->entries[st_fifo->head].len = len;
-
- /*
- * DMA not finished yet, so try again
- * later, set timer value, resolution
- * 500 us
- */
-
- switch_bank(iobase, BANK1);
- outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
-
- /* Enable Timer */
- outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
-
- return FALSE; /* I'll be back! */
- }
- }
-
- /*
- * Remember the time we received this frame, so we can
- * reduce the min turn time a bit since we will know
- * how much time we have used for protocol processing
- */
- self->stamp = ktime_get();
-
- skb = dev_alloc_skb(len+1);
- if (skb == NULL)
- {
- self->netdev->stats.rx_dropped++;
-
- return FALSE;
- }
-
- /* Make sure IP header gets aligned */
- skb_reserve(skb, 1);
-
- /* Copy frame without CRC, CRC is removed by hardware*/
- skb_put(skb, len);
- skb_copy_to_linear_data(skb, self->rx_buff.data, len);
-
- /* 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);
- }
- }
-
- switch_bank(iobase, BANK0);
-
- return TRUE;
-}
-
-
-
-/*
- * Function ali_ircc_sir_hard_xmit (skb, dev)
- *
- * Transmit the frame!
- *
- */
-static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct ali_ircc_cb *self;
- unsigned long flags;
- int iobase;
- __u32 speed;
-
-
- IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);
-
- self = netdev_priv(dev);
- IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;);
-
- iobase = self->io.sir_base;
-
- netif_stop_queue(dev);
-
- /* Make sure tests *& speed change are atomic */
- spin_lock_irqsave(&self->lock, flags);
-
- /* Note : you should make sure that speed changes are not going
- * to corrupt any outgoing frame. Look at nsc-ircc for the gory
- * details - Jean II */
-
- /* 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) {
- ali_ircc_change_speed(self, speed);
- netif_trans_update(dev);
- spin_unlock_irqrestore(&self->lock, flags);
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- } else
- self->new_speed = speed;
- }
-
- /* Init tx buffer */
- self->tx_buff.data = self->tx_buff.head;
-
- /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
- self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
- self->tx_buff.truesize);
-
- self->netdev->stats.tx_bytes += self->tx_buff.len;
-
- /* Turn on transmit finished interrupt. Will fire immediately! */
- outb(UART_IER_THRI, iobase+UART_IER);
-
- netif_trans_update(dev);
- spin_unlock_irqrestore(&self->lock, flags);
-
- dev_kfree_skb(skb);
-
-
- return NETDEV_TX_OK;
-}
-
-
-/*
- * Function ali_ircc_net_ioctl (dev, rq, cmd)
- *
- * Process IOCTL commands for this device
- *
- */
-static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct if_irda_req *irq = (struct if_irda_req *) rq;
- struct ali_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);
-
- switch (cmd) {
- case SIOCSBANDWIDTH: /* Set bandwidth */
- pr_debug("%s(), SIOCSBANDWIDTH\n", __func__);
- /*
- * This function will also be used by IrLAP to change the
- * speed, so we still must allow for speed change within
- * interrupt context.
- */
- if (!in_interrupt() && !capable(CAP_NET_ADMIN))
- return -EPERM;
-
- spin_lock_irqsave(&self->lock, flags);
- ali_ircc_change_speed(self, irq->ifr_baudrate);
- spin_unlock_irqrestore(&self->lock, flags);
- break;
- case SIOCSMEDIABUSY: /* Set media busy */
- pr_debug("%s(), SIOCSMEDIABUSY\n", __func__);
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- irda_device_set_media_busy(self->netdev, TRUE);
- break;
- case SIOCGRECEIVING: /* Check if we are receiving right now */
- pr_debug("%s(), SIOCGRECEIVING\n", __func__);
- /* This is protected */
- irq->ifr_receiving = ali_ircc_is_receiving(self);
- break;
- default:
- ret = -EOPNOTSUPP;
- }
-
-
- return ret;
-}
-
-/*
- * Function ali_ircc_is_receiving (self)
- *
- * Return TRUE is we are currently receiving a frame
- *
- */
-static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
-{
- unsigned long flags;
- int status = FALSE;
- int iobase;
-
-
- IRDA_ASSERT(self != NULL, return FALSE;);
-
- spin_lock_irqsave(&self->lock, flags);
-
- if (self->io.speed > 115200)
- {
- iobase = self->io.fir_base;
-
- switch_bank(iobase, BANK1);
- if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
- {
- /* We are receiving something */
- pr_debug("%s(), We are receiving something\n",
- __func__);
- status = TRUE;
- }
- switch_bank(iobase, BANK0);
- }
- else
- {
- status = (self->rx_buff.state != OUTSIDE_FRAME);
- }
-
- spin_unlock_irqrestore(&self->lock, flags);
-
-
- return status;
-}
-
-static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct ali_ircc_cb *self = platform_get_drvdata(dev);
-
- net_info_ratelimited("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
-
- if (self->io.suspended)
- return 0;
-
- ali_ircc_net_close(self->netdev);
-
- self->io.suspended = 1;
-
- return 0;
-}
-
-static int ali_ircc_resume(struct platform_device *dev)
-{
- struct ali_ircc_cb *self = platform_get_drvdata(dev);
-
- if (!self->io.suspended)
- return 0;
-
- ali_ircc_net_open(self->netdev);
-
- net_info_ratelimited("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
-
- self->io.suspended = 0;
-
- return 0;
-}
-
-/* ALi Chip Function */
-
-static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
-{
-
- unsigned char newMask;
-
- int iobase = self->io.fir_base; /* or sir_base */
-
- pr_debug("%s(), -------- Start -------- ( Enable = %d )\n",
- __func__, enable);
-
- /* Enable the interrupt which we wish to */
- if (enable){
- if (self->io.direction == IO_XMIT)
- {
- if (self->io.speed > 115200) /* FIR, MIR */
- {
- newMask = self->ier;
- }
- else /* SIR */
- {
- newMask = UART_IER_THRI | UART_IER_RDI;
- }
- }
- else {
- if (self->io.speed > 115200) /* FIR, MIR */
- {
- newMask = self->ier;
- }
- else /* SIR */
- {
- newMask = UART_IER_RDI;
- }
- }
- }
- else /* Disable all the interrupts */
- {
- newMask = 0x00;
-
- }
-
- //SIR and FIR has different registers
- if (self->io.speed > 115200)
- {
- switch_bank(iobase, BANK0);
- outb(newMask, iobase+FIR_IER);
- }
- else
- outb(newMask, iobase+UART_IER);
-
-}
-
-static void SIR2FIR(int iobase)
-{
- //unsigned char tmp;
-
-
- /* Already protected (change_speed() or setup()), no need to lock.
- * Jean II */
-
- outb(0x28, iobase+UART_MCR);
- outb(0x68, iobase+UART_MCR);
- outb(0x88, iobase+UART_MCR);
-
- outb(0x60, iobase+FIR_MCR); /* Master Reset */
- outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
-
- //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
- //tmp |= 0x20;
- //outb(tmp, iobase+FIR_LCR_B);
-
-}
-
-static void FIR2SIR(int iobase)
-{
- unsigned char val;
-
-
- /* Already protected (change_speed() or setup()), no need to lock.
- * Jean II */
-
- outb(0x20, iobase+FIR_MCR); /* IRQ to low */
- outb(0x00, iobase+UART_IER);
-
- outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
- outb(0x00, iobase+UART_FCR);
- outb(0x07, iobase+UART_FCR);
-
- val = inb(iobase+UART_RX);
- val = inb(iobase+UART_LSR);
- val = inb(iobase+UART_MSR);
-
-}
-
-MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
-MODULE_DESCRIPTION("ALi FIR Controller Driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);
-
-
-module_param_hw_array(io, int, ioport, NULL, 0);
-MODULE_PARM_DESC(io, "Base I/O addresses");
-module_param_hw_array(irq, int, irq, NULL, 0);
-MODULE_PARM_DESC(irq, "IRQ lines");
-module_param_hw_array(dma, int, dma, NULL, 0);
-MODULE_PARM_DESC(dma, "DMA channels");
-
-module_init(ali_ircc_init);
-module_exit(ali_ircc_cleanup);