/*
* Function ircomm_tty_init()
*
* Init IrCOMM TTY layer/driver
*
*/
static int __init ircomm_tty_init(void)
{
driver = alloc_tty_driver(IRCOMM_TTY_PORTS);
if (!driver)
return -ENOMEM;
ircomm_tty = hashbin_new(HB_LOCK);
if (ircomm_tty == NULL) {
IRDA_ERROR("%s(), can't allocate hashbin!\n", __FUNCTION__);
put_tty_driver(driver);
return -ENOMEM;
}
driver->owner = THIS_MODULE;
driver->driver_name = "ircomm";
driver->name = "ircomm";
driver->major = IRCOMM_TTY_MAJOR;
driver->minor_start = IRCOMM_TTY_MINOR;
driver->type = TTY_DRIVER_TYPE_SERIAL;
driver->subtype = SERIAL_TYPE_NORMAL;
driver->init_termios = tty_std_termios;
driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(driver, &ops);
if (tty_register_driver(driver)) {
IRDA_ERROR("%s(): Couldn't register serial driver\n",
__FUNCTION__);
put_tty_driver(driver);
return -1;
}
return 0;
}
int sirdev_schedule_request(struct sir_dev *dev, int initial_state, unsigned param)
{
struct sir_fsm *fsm = &dev->fsm;
IRDA_DEBUG(2, "%s - state=0x%04x / param=%u\n", __func__,
initial_state, param);
if (down_trylock(&fsm->sem)) {
if (in_interrupt() || in_atomic() || irqs_disabled()) {
IRDA_DEBUG(1, "%s(), state machine busy!\n", __func__);
return -EWOULDBLOCK;
} else
down(&fsm->sem);
}
if (fsm->state == SIRDEV_STATE_DEAD) {
/* race with sirdev_close should never happen */
IRDA_ERROR("%s(), instance staled!\n", __func__);
up(&fsm->sem);
return -ESTALE; /* or better EPIPE? */
}
netif_stop_queue(dev->netdev);
atomic_set(&dev->enable_rx, 0);
fsm->state = initial_state;
fsm->param = param;
fsm->result = 0;
INIT_DELAYED_WORK(&fsm->work, sirdev_config_fsm);
queue_delayed_work(irda_sir_wq, &fsm->work, 0);
return 0;
}
static int sirdev_tx_complete_fsm(struct sir_dev *dev)
{
struct sir_fsm *fsm = &dev->fsm;
unsigned next_state, delay;
unsigned bytes_left;
do {
next_state = fsm->substate; /* default: stay in current substate */
delay = 0;
switch(fsm->substate) {
case SIRDEV_STATE_WAIT_XMIT:
if (dev->drv->chars_in_buffer)
bytes_left = dev->drv->chars_in_buffer(dev);
else
bytes_left = 0;
if (!bytes_left) {
next_state = SIRDEV_STATE_WAIT_UNTIL_SENT;
break;
}
if (dev->speed > 115200)
delay = (bytes_left*8*10000) / (dev->speed/100);
else if (dev->speed > 0)
delay = (bytes_left*10*10000) / (dev->speed/100);
else
delay = 0;
/* expected delay (usec) until remaining bytes are sent */
if (delay < 100) {
udelay(delay);
delay = 0;
break;
}
/* sleep some longer delay (msec) */
delay = (delay+999) / 1000;
break;
case SIRDEV_STATE_WAIT_UNTIL_SENT:
/* block until underlaying hardware buffer are empty */
if (dev->drv->wait_until_sent)
dev->drv->wait_until_sent(dev);
next_state = SIRDEV_STATE_TX_DONE;
break;
case SIRDEV_STATE_TX_DONE:
return 0;
default:
IRDA_ERROR("%s - undefined state\n", __func__);
return -EINVAL;
}
fsm->substate = next_state;
} while (delay == 0);
return delay;
}
/*
* Function ircomm_tty_init()
*
* Init IrCOMM TTY layer/driver
*
*/
static int __init ircomm_tty_init(void)
{
driver = alloc_tty_driver(IRCOMM_TTY_PORTS);
if (!driver)
return -ENOMEM;
ircomm_tty = hashbin_new(HB_LOCK);
if (ircomm_tty == NULL) {
IRDA_ERROR("%s(), can't allocate hashbin!\n", __func__);
put_tty_driver(driver);
return -ENOMEM;
}
<<<<<<< HEAD
static int girbil_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control = GIRBIL_TXEN | GIRBIL_RXEN;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
sirdev_set_dtr_rts(dev, TRUE, FALSE);
delay = 20;
state = GIRBIL_STATE_WAIT1_RESET;
break;
case GIRBIL_STATE_WAIT1_RESET:
sirdev_set_dtr_rts(dev, FALSE, TRUE);
delay = 20;
state = GIRBIL_STATE_WAIT2_RESET;
break;
case GIRBIL_STATE_WAIT2_RESET:
sirdev_raw_write(dev, &control, 1);
delay = 20;
state = GIRBIL_STATE_WAIT3_RESET;
break;
case GIRBIL_STATE_WAIT3_RESET:
sirdev_set_dtr_rts(dev, TRUE, TRUE);
dev->speed = 9600;
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __func__, state);
ret = -1;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static int girbil_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control = GIRBIL_TXEN | GIRBIL_RXEN;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
/* Reset dongle */
sirdev_set_dtr_rts(dev, TRUE, FALSE);
/* Sleep at least 5 ms */
delay = 20;
state = GIRBIL_STATE_WAIT1_RESET;
break;
case GIRBIL_STATE_WAIT1_RESET:
/* Set DTR and clear RTS to enter command mode */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
delay = 20;
state = GIRBIL_STATE_WAIT2_RESET;
break;
case GIRBIL_STATE_WAIT2_RESET:
/* Write control byte */
sirdev_raw_write(dev, &control, 1);
delay = 20;
state = GIRBIL_STATE_WAIT3_RESET;
break;
case GIRBIL_STATE_WAIT3_RESET:
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
dev->speed = 9600;
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __FUNCTION__, state);
ret = -1;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
int __init irttp_init(void)
{
irttp = kzalloc(sizeof(struct irttp_cb), GFP_KERNEL);
if (irttp == NULL)
return -ENOMEM;
irttp->magic = TTP_MAGIC;
irttp->tsaps = hashbin_new(HB_LOCK);
if (!irttp->tsaps) {
IRDA_ERROR("%s: can't allocate IrTTP hashbin!\n",
__func__);
kfree(irttp);
return -ENOMEM;
}
return 0;
}
/*
* Function irda_device_is_receiving (dev)
*
* Check if the device driver is currently receiving data
*
*/
int irda_device_is_receiving(struct net_device *dev)
{
struct if_irda_req req;
int ret;
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
if (!dev->do_ioctl) {
IRDA_ERROR("%s: do_ioctl not impl. by device driver\n",
__FUNCTION__);
return -1;
}
ret = dev->do_ioctl(dev, (struct ifreq *) &req, SIOCGRECEIVING);
if (ret < 0)
return ret;
return req.ifr_receiving;
}
static int __init ircomm_init(void)
{
ircomm = hashbin_new(HB_LOCK);
if (ircomm == NULL) {
IRDA_ERROR("%s(), can't allocate hashbin!\n", __FUNCTION__);
return -ENOMEM;
}
#ifdef CONFIG_PROC_FS
{ struct proc_dir_entry *ent;
ent = create_proc_entry("ircomm", 0, proc_irda);
if (ent)
ent->proc_fops = &ircomm_proc_fops;
}
#endif /* CONFIG_PROC_FS */
IRDA_MESSAGE("IrCOMM protocol (Dag Brattli)\n");
return 0;
}
static int mcp2120_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
;
/* Reset dongle by setting RTS*/
sirdev_set_dtr_rts(dev, TRUE, TRUE);
state = MCP2120_STATE_WAIT1_RESET;
delay = 50;
break;
case MCP2120_STATE_WAIT1_RESET:
;
/* clear RTS and wait for at least 30 ms. */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
state = MCP2120_STATE_WAIT2_RESET;
delay = 50;
break;
case MCP2120_STATE_WAIT2_RESET:
;
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __func__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static int __init ircomm_init(void)
{
ircomm = hashbin_new(HB_LOCK);
if (ircomm == NULL) {
IRDA_ERROR("%s(), can't allocate hashbin!\n", __func__);
return -ENOMEM;
}
#ifdef CONFIG_PROC_FS
{ struct proc_dir_entry *ent;
ent = proc_create("ircomm", 0, proc_irda, &ircomm_proc_fops);
if (!ent) {
printk(KERN_ERR "ircomm_init: can't create /proc entry!\n");
return -ENODEV;
}
}
#endif
IRDA_MESSAGE("IrCOMM protocol (Dag Brattli)\n");
return 0;
}
static int mcp2120_change_speed(struct sir_dev *dev, unsigned speed)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control[2];
static int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch (state) {
case SIRDEV_STATE_DONGLE_SPEED:
/* Set DTR to enter command mode */
sirdev_set_dtr_rts(dev, TRUE, FALSE);
udelay(500);
ret = 0;
switch (speed) {
default:
speed = 9600;
ret = -EINVAL;
/* fall through */
case 9600:
control[0] = MCP2120_9600;
;
break;
case 19200:
control[0] = MCP2120_19200;
;
break;
case 34800:
control[0] = MCP2120_38400;
;
break;
case 57600:
control[0] = MCP2120_57600;
;
break;
case 115200:
control[0] = MCP2120_115200;
;
break;
}
control[1] = MCP2120_COMMIT;
/* Write control bytes */
sirdev_raw_write(dev, control, 2);
dev->speed = speed;
state = MCP2120_STATE_WAIT_SPEED;
delay = 100;
;
break;
case MCP2120_STATE_WAIT_SPEED:
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
;
break;
default:
IRDA_ERROR("%s(), undefine state %d\n", __func__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static void sirdev_config_fsm(struct work_struct *work)
{
struct sir_dev *dev = container_of(work, struct sir_dev, fsm.work.work);
struct sir_fsm *fsm = &dev->fsm;
int next_state;
int ret = -1;
unsigned delay;
IRDA_DEBUG(2, "%s(), <%ld>\n", __func__, jiffies);
do {
IRDA_DEBUG(3, "%s - state=0x%04x / substate=0x%04x\n",
__func__, fsm->state, fsm->substate);
next_state = fsm->state;
delay = 0;
switch(fsm->state) {
case SIRDEV_STATE_DONGLE_OPEN:
if (dev->dongle_drv != NULL) {
ret = sirdev_put_dongle(dev);
if (ret) {
fsm->result = -EINVAL;
next_state = SIRDEV_STATE_ERROR;
break;
}
}
/* Initialize dongle */
ret = sirdev_get_dongle(dev, fsm->param);
if (ret) {
fsm->result = ret;
next_state = SIRDEV_STATE_ERROR;
break;
}
/* Dongles are powered through the modem control lines which
* were just set during open. Before resetting, let's wait for
* the power to stabilize. This is what some dongle drivers did
* in open before, while others didn't - should be safe anyway.
*/
delay = 50;
fsm->substate = SIRDEV_STATE_DONGLE_RESET;
next_state = SIRDEV_STATE_DONGLE_RESET;
fsm->param = 9600;
break;
case SIRDEV_STATE_DONGLE_CLOSE:
/* shouldn't we just treat this as success=? */
if (dev->dongle_drv == NULL) {
fsm->result = -EINVAL;
next_state = SIRDEV_STATE_ERROR;
break;
}
ret = sirdev_put_dongle(dev);
if (ret) {
fsm->result = ret;
next_state = SIRDEV_STATE_ERROR;
break;
}
next_state = SIRDEV_STATE_DONE;
break;
case SIRDEV_STATE_SET_DTR_RTS:
ret = sirdev_set_dtr_rts(dev,
(fsm->param&0x02) ? TRUE : FALSE,
(fsm->param&0x01) ? TRUE : FALSE);
next_state = SIRDEV_STATE_DONE;
break;
case SIRDEV_STATE_SET_SPEED:
fsm->substate = SIRDEV_STATE_WAIT_XMIT;
next_state = SIRDEV_STATE_DONGLE_CHECK;
break;
case SIRDEV_STATE_DONGLE_CHECK:
ret = sirdev_tx_complete_fsm(dev);
if (ret < 0) {
fsm->result = ret;
next_state = SIRDEV_STATE_ERROR;
break;
}
if ((delay=ret) != 0)
break;
if (dev->dongle_drv) {
fsm->substate = SIRDEV_STATE_DONGLE_RESET;
next_state = SIRDEV_STATE_DONGLE_RESET;
}
else {
dev->speed = fsm->param;
next_state = SIRDEV_STATE_PORT_SPEED;
}
break;
case SIRDEV_STATE_DONGLE_RESET:
if (dev->dongle_drv->reset) {
ret = dev->dongle_drv->reset(dev);
if (ret < 0) {
fsm->result = ret;
next_state = SIRDEV_STATE_ERROR;
break;
}
}
else
ret = 0;
if ((delay=ret) == 0) {
/* set serial port according to dongle default speed */
if (dev->drv->set_speed)
dev->drv->set_speed(dev, dev->speed);
fsm->substate = SIRDEV_STATE_DONGLE_SPEED;
next_state = SIRDEV_STATE_DONGLE_SPEED;
}
break;
case SIRDEV_STATE_DONGLE_SPEED:
if (dev->dongle_drv->set_speed) {
ret = dev->dongle_drv->set_speed(dev, fsm->param);
if (ret < 0) {
fsm->result = ret;
next_state = SIRDEV_STATE_ERROR;
break;
}
}
else
ret = 0;
if ((delay=ret) == 0)
next_state = SIRDEV_STATE_PORT_SPEED;
break;
case SIRDEV_STATE_PORT_SPEED:
/* Finally we are ready to change the serial port speed */
if (dev->drv->set_speed)
dev->drv->set_speed(dev, dev->speed);
dev->new_speed = 0;
next_state = SIRDEV_STATE_DONE;
break;
case SIRDEV_STATE_DONE:
/* Signal network layer so it can send more frames */
netif_wake_queue(dev->netdev);
next_state = SIRDEV_STATE_COMPLETE;
break;
default:
IRDA_ERROR("%s - undefined state\n", __func__);
fsm->result = -EINVAL;
/* fall thru */
case SIRDEV_STATE_ERROR:
IRDA_ERROR("%s - error: %d\n", __func__, fsm->result);
#if 0 /* don't enable this before we have netdev->tx_timeout to recover */
netif_stop_queue(dev->netdev);
#else
netif_wake_queue(dev->netdev);
#endif
/* fall thru */
case SIRDEV_STATE_COMPLETE:
/* config change finished, so we are not busy any longer */
sirdev_enable_rx(dev);
up(&fsm->sem);
return;
}
fsm->state = next_state;
} while(!delay);
queue_delayed_work(irda_sir_wq, &fsm->work, msecs_to_jiffies(delay));
}
/*
* Function async_wrap (skb, *tx_buff, buffsize)
*
* Makes a new buffer with wrapping and stuffing, should check that
* we don't get tx buffer overflow.
*/
int async_wrap_skb(struct sk_buff *skb, __u8 *tx_buff, int buffsize)
{
struct irda_skb_cb *cb = (struct irda_skb_cb *) skb->cb;
int xbofs;
int i;
int n;
union {
__u16 value;
__u8 bytes[2];
} fcs;
/* Initialize variables */
fcs.value = INIT_FCS;
n = 0;
/*
* Send XBOF's for required min. turn time and for the negotiated
* additional XBOFS
*/
if (cb->magic != LAP_MAGIC) {
/*
* This will happen for all frames sent from user-space.
* Nothing to worry about, but we set the default number of
* BOF's
*/
IRDA_DEBUG(1, "%s(), wrong magic in skb!\n", __FUNCTION__);
xbofs = 10;
} else
xbofs = cb->xbofs + cb->xbofs_delay;
IRDA_DEBUG(4, "%s(), xbofs=%d\n", __FUNCTION__, xbofs);
/* Check that we never use more than 115 + 48 xbofs */
if (xbofs > 163) {
IRDA_DEBUG(0, "%s(), too many xbofs (%d)\n", __FUNCTION__,
xbofs);
xbofs = 163;
}
memset(tx_buff + n, XBOF, xbofs);
n += xbofs;
/* Start of packet character BOF */
tx_buff[n++] = BOF;
/* Insert frame and calc CRC */
for (i=0; i < skb->len; i++) {
/*
* Check for the possibility of tx buffer overflow. We use
* bufsize-5 since the maximum number of bytes that can be
* transmitted after this point is 5.
*/
if(n >= (buffsize-5)) {
IRDA_ERROR("%s(), tx buffer overflow (n=%d)\n",
__FUNCTION__, n);
return n;
}
n += stuff_byte(skb->data[i], tx_buff+n);
fcs.value = irda_fcs(fcs.value, skb->data[i]);
}
/* Insert CRC in little endian format (LSB first) */
fcs.value = ~fcs.value;
#ifdef __LITTLE_ENDIAN
n += stuff_byte(fcs.bytes[0], tx_buff+n);
n += stuff_byte(fcs.bytes[1], tx_buff+n);
#else /* ifdef __BIG_ENDIAN */
n += stuff_byte(fcs.bytes[1], tx_buff+n);
n += stuff_byte(fcs.bytes[0], tx_buff+n);
#endif
tx_buff[n++] = EOF;
return n;
}
static struct irport_cb *
irport_open(int i, unsigned int iobase, unsigned int irq)
{
struct net_device *dev;
struct irport_cb *self;
IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
/* Lock the port that we need */
if (!request_region(iobase, IO_EXTENT, driver_name)) {
IRDA_DEBUG(0, "%s(), can't get iobase of 0x%03x\n",
__FUNCTION__, iobase);
goto err_out1;
}
/*
* Allocate new instance of the driver
*/
dev = alloc_irdadev(sizeof(struct irport_cb));
if (!dev) {
IRDA_ERROR("%s(), can't allocate memory for "
"irda device!\n", __FUNCTION__);
goto err_out2;
}
self = dev->priv;
spin_lock_init(&self->lock);
/* Need to store self somewhere */
dev_self[i] = self;
self->priv = self;
self->index = i;
/* Initialize IO */
self->io.sir_base = iobase;
self->io.sir_ext = IO_EXTENT;
self->io.irq = irq;
self->io.fifo_size = 16; /* 16550A and compatible */
/* Initialize QoS for this device */
irda_init_max_qos_capabilies(&self->qos);
self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
IR_115200;
self->qos.min_turn_time.bits = qos_mtt_bits;
irda_qos_bits_to_value(&self->qos);
/* Bootstrap ZeroCopy Rx */
self->rx_buff.truesize = IRDA_SKB_MAX_MTU;
self->rx_buff.skb = __dev_alloc_skb(self->rx_buff.truesize,
GFP_KERNEL);
if (self->rx_buff.skb == NULL) {
IRDA_ERROR("%s(), can't allocate memory for "
"receive buffer!\n", __FUNCTION__);
goto err_out3;
}
skb_reserve(self->rx_buff.skb, 1);
self->rx_buff.head = self->rx_buff.skb->data;
/* No need to memset the buffer, unless you are really pedantic */
/* Finish setup the Rx buffer descriptor */
self->rx_buff.in_frame = FALSE;
self->rx_buff.state = OUTSIDE_FRAME;
self->rx_buff.data = self->rx_buff.head;
/* Specify how much memory we want */
self->tx_buff.truesize = 4000;
/* Allocate memory if needed */
if (self->tx_buff.truesize > 0) {
self->tx_buff.head = kzalloc(self->tx_buff.truesize,
GFP_KERNEL);
if (self->tx_buff.head == NULL) {
IRDA_ERROR("%s(), can't allocate memory for "
"transmit buffer!\n", __FUNCTION__);
goto err_out4;
}
}
self->tx_buff.data = self->tx_buff.head;
self->netdev = dev;
/* Keep track of module usage */
SET_MODULE_OWNER(dev);
/* May be overridden by piggyback drivers */
self->interrupt = irport_interrupt;
self->change_speed = irport_change_speed;
/* Override the network functions we need to use */
dev->hard_start_xmit = irport_hard_xmit;
dev->tx_timeout = irport_timeout;
dev->watchdog_timeo = HZ; /* Allow time enough for speed change */
dev->open = irport_net_open;
dev->stop = irport_net_close;
dev->get_stats = irport_net_get_stats;
dev->do_ioctl = irport_net_ioctl;
/* Make ifconfig display some details */
dev->base_addr = iobase;
dev->irq = irq;
if (register_netdev(dev)) {
IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__);
goto err_out5;
}
IRDA_MESSAGE("IrDA: Registered device %s (irport io=0x%X irq=%d)\n",
dev->name, iobase, irq);
return self;
err_out5:
kfree(self->tx_buff.head);
err_out4:
kfree_skb(self->rx_buff.skb);
err_out3:
free_netdev(dev);
dev_self[i] = NULL;
err_out2:
release_region(iobase, IO_EXTENT);
err_out1:
return NULL;
}
static int w83977af_open(int i, unsigned int iobase, unsigned int irq,
unsigned int dma)
{
struct net_device *dev;
struct w83977af_ir *self;
int err;
IRDA_DEBUG(0, "%s()\n", __func__ );
if (!request_region(iobase, CHIP_IO_EXTENT, driver_name)) {
IRDA_DEBUG(0, "%s(), can't get iobase of 0x%03x\n",
__func__ , iobase);
return -ENODEV;
}
if (w83977af_probe(iobase, irq, dma) == -1) {
err = -1;
goto err_out;
}
dev = alloc_irdadev(sizeof(struct w83977af_ir));
if (dev == NULL) {
printk( KERN_ERR "IrDA: Can't allocate memory for "
"IrDA control block!\n");
err = -ENOMEM;
goto err_out;
}
self = netdev_priv(dev);
spin_lock_init(&self->lock);
self->io.fir_base = iobase;
self->io.irq = irq;
self->io.fir_ext = CHIP_IO_EXTENT;
self->io.dma = dma;
self->io.fifo_size = 32;
irda_init_max_qos_capabilies(&self->qos);
self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
self->qos.min_turn_time.bits = qos_mtt_bits;
irda_qos_bits_to_value(&self->qos);
self->rx_buff.truesize = 14384;
self->tx_buff.truesize = 4000;
self->rx_buff.head =
dma_alloc_coherent(NULL, self->rx_buff.truesize,
&self->rx_buff_dma, GFP_KERNEL);
if (self->rx_buff.head == NULL) {
err = -ENOMEM;
goto err_out1;
}
memset(self->rx_buff.head, 0, self->rx_buff.truesize);
self->tx_buff.head =
dma_alloc_coherent(NULL, self->tx_buff.truesize,
&self->tx_buff_dma, GFP_KERNEL);
if (self->tx_buff.head == NULL) {
err = -ENOMEM;
goto err_out2;
}
memset(self->tx_buff.head, 0, self->tx_buff.truesize);
self->rx_buff.in_frame = FALSE;
self->rx_buff.state = OUTSIDE_FRAME;
self->tx_buff.data = self->tx_buff.head;
self->rx_buff.data = self->rx_buff.head;
self->netdev = dev;
dev->netdev_ops = &w83977_netdev_ops;
err = register_netdev(dev);
if (err) {
IRDA_ERROR("%s(), register_netdevice() failed!\n", __func__);
goto err_out3;
}
IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
dev_self[i] = self;
return 0;
err_out3:
dma_free_coherent(NULL, self->tx_buff.truesize,
self->tx_buff.head, self->tx_buff_dma);
err_out2:
dma_free_coherent(NULL, self->rx_buff.truesize,
self->rx_buff.head, self->rx_buff_dma);
err_out1:
free_netdev(dev);
err_out:
release_region(iobase, CHIP_IO_EXTENT);
return err;
}
static int girbil_change_speed(struct sir_dev *dev, unsigned speed)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control[2];
static int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch(state) {
case SIRDEV_STATE_DONGLE_SPEED:
sirdev_set_dtr_rts(dev, FALSE, TRUE);
udelay(25);
ret = 0;
switch (speed) {
default:
ret = -EINVAL;
case 9600:
control[0] = GIRBIL_9600;
break;
case 19200:
control[0] = GIRBIL_19200;
break;
case 34800:
control[0] = GIRBIL_38400;
break;
case 57600:
control[0] = GIRBIL_57600;
break;
case 115200:
control[0] = GIRBIL_115200;
break;
}
control[1] = GIRBIL_LOAD;
sirdev_raw_write(dev, control, 2);
dev->speed = speed;
state = GIRBIL_STATE_WAIT_SPEED;
delay = 100;
break;
case GIRBIL_STATE_WAIT_SPEED:
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(25);
break;
default:
IRDA_ERROR("%s - undefined state %d\n", __func__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static int __init nsc_ircc_open(chipio_t *info)
{
struct net_device *dev;
struct nsc_ircc_cb *self;
void *ret;
int err, chip_index;
IRDA_DEBUG(2, "%s()\n", __func__);
for (chip_index = 0; chip_index < ARRAY_SIZE(dev_self); chip_index++) {
if (!dev_self[chip_index])
break;
}
if (chip_index == ARRAY_SIZE(dev_self)) {
IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __func__);
return -ENOMEM;
}
IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name,
info->cfg_base);
if ((nsc_ircc_setup(info)) == -1)
return -1;
IRDA_MESSAGE("%s, driver loaded (Dag Brattli)\n", driver_name);
dev = alloc_irdadev(sizeof(struct nsc_ircc_cb));
if (dev == NULL) {
IRDA_ERROR("%s(), can't allocate memory for "
"control block!\n", __func__);
return -ENOMEM;
}
self = netdev_priv(dev);
self->netdev = dev;
spin_lock_init(&self->lock);
dev_self[chip_index] = self;
self->index = chip_index;
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.fifo_size = 32;
ret = request_region(self->io.fir_base, self->io.fir_ext, driver_name);
if (!ret) {
IRDA_WARNING("%s(), can't get iobase of 0x%03x\n",
__func__, self->io.fir_base);
err = -ENODEV;
goto out1;
}
irda_init_max_qos_capabilies(&self->qos);
self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
IR_115200|IR_576000|IR_1152000 |(IR_4000000 << 8);
self->qos.min_turn_time.bits = qos_mtt_bits;
irda_qos_bits_to_value(&self->qos);
self->rx_buff.truesize = 14384;
self->tx_buff.truesize = 14384;
self->rx_buff.head =
dma_alloc_coherent(NULL, self->rx_buff.truesize,
&self->rx_buff_dma, GFP_KERNEL);
if (self->rx_buff.head == NULL) {
err = -ENOMEM;
goto out2;
}
memset(self->rx_buff.head, 0, self->rx_buff.truesize);
self->tx_buff.head =
dma_alloc_coherent(NULL, self->tx_buff.truesize,
&self->tx_buff_dma, GFP_KERNEL);
if (self->tx_buff.head == NULL) {
err = -ENOMEM;
goto out3;
}
memset(self->tx_buff.head, 0, self->tx_buff.truesize);
self->rx_buff.in_frame = FALSE;
self->rx_buff.state = OUTSIDE_FRAME;
self->tx_buff.data = self->tx_buff.head;
self->rx_buff.data = self->rx_buff.head;
self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
self->tx_fifo.tail = self->tx_buff.head;
dev->netdev_ops = &nsc_ircc_sir_ops;
err = register_netdev(dev);
if (err) {
IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
goto out4;
}
IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
if ((dongle_id <= 0) ||
(dongle_id >= ARRAY_SIZE(dongle_types))) {
dongle_id = nsc_ircc_read_dongle_id(self->io.fir_base);
IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name,
dongle_types[dongle_id]);
} else {
IRDA_MESSAGE("%s, Using dongle: %s\n", driver_name,
dongle_types[dongle_id]);
}
self->io.dongle_id = dongle_id;
nsc_ircc_init_dongle_interface(self->io.fir_base, dongle_id);
self->pldev = platform_device_register_simple(NSC_IRCC_DRIVER_NAME,
self->index, NULL, 0);
if (IS_ERR(self->pldev)) {
err = PTR_ERR(self->pldev);
goto out5;
}
platform_set_drvdata(self->pldev, self);
return chip_index;
out5:
unregister_netdev(dev);
out4:
dma_free_coherent(NULL, self->tx_buff.truesize,
self->tx_buff.head, self->tx_buff_dma);
out3:
dma_free_coherent(NULL, self->rx_buff.truesize,
self->rx_buff.head, self->rx_buff_dma);
out2:
release_region(self->io.fir_base, self->io.fir_ext);
out1:
free_netdev(dev);
dev_self[chip_index] = NULL;
return err;
}
static int __init nsc_ircc_init(void)
{
chipio_t info;
nsc_chip_t *chip;
int ret;
int cfg_base;
int cfg, id;
int reg;
int i = 0;
ret = platform_driver_register(&nsc_ircc_driver);
if (ret) {
IRDA_ERROR("%s, Can't register driver!\n", driver_name);
return ret;
}
ret = pnp_register_driver(&nsc_ircc_pnp_driver);
if (!ret)
pnp_registered = 1;
ret = -ENODEV;
for (chip = chips; chip->name ; chip++) {
IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__,
chip->name);
for (cfg = 0; cfg < ARRAY_SIZE(chip->cfg); cfg++) {
cfg_base = chip->cfg[cfg];
if (!cfg_base)
continue;
reg = inb(cfg_base);
if (reg == 0xff) {
IRDA_DEBUG(2, "%s() no chip at 0x%03x\n", __func__, cfg_base);
continue;
}
outb(chip->cid_index, cfg_base);
id = inb(cfg_base+1);
if ((id & chip->cid_mask) == chip->cid_value) {
IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n",
__func__, chip->name, id & ~chip->cid_mask);
if (pnp_succeeded) {
memset(&info, 0, sizeof(chipio_t));
info.cfg_base = cfg_base;
info.fir_base = pnp_info.fir_base;
info.dma = pnp_info.dma;
info.irq = pnp_info.irq;
if (info.fir_base < 0x2000) {
IRDA_MESSAGE("%s, chip->init\n", driver_name);
chip->init(chip, &info);
} else
chip->probe(chip, &info);
if (nsc_ircc_open(&info) >= 0)
ret = 0;
}
if (ret) {
IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name);
memset(&info, 0, sizeof(chipio_t));
info.cfg_base = cfg_base;
info.fir_base = io[i];
info.dma = dma[i];
info.irq = irq[i];
if (io[i] < 0x2000) {
chip->init(chip, &info);
} else
chip->probe(chip, &info);
if (nsc_ircc_open(&info) >= 0)
ret = 0;
}
i++;
} else {
IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __func__, id);
}
}
}
if (ret) {
platform_driver_unregister(&nsc_ircc_driver);
pnp_unregister_driver(&nsc_ircc_pnp_driver);
pnp_registered = 0;
}
return ret;
}
static int tekram_change_speed(struct sir_dev *dev, unsigned speed)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 byte;
static int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch(state) {
case SIRDEV_STATE_DONGLE_SPEED:
switch (speed) {
default:
speed = 9600;
ret = -EINVAL;
/* fall thru */
case 9600:
byte = TEKRAM_PW|TEKRAM_9600;
break;
case 19200:
byte = TEKRAM_PW|TEKRAM_19200;
break;
case 38400:
byte = TEKRAM_PW|TEKRAM_38400;
break;
case 57600:
byte = TEKRAM_PW|TEKRAM_57600;
break;
case 115200:
byte = TEKRAM_115200;
break;
}
/* Set DTR, Clear RTS */
sirdev_set_dtr_rts(dev, TRUE, FALSE);
/* Wait at least 7us */
udelay(14);
/* Write control byte */
sirdev_raw_write(dev, &byte, 1);
dev->speed = speed;
state = TEKRAM_STATE_WAIT_SPEED;
delay = tekram_delay;
break;
case TEKRAM_STATE_WAIT_SPEED:
/* Set DTR, Set RTS */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(50);
break;
default:
IRDA_ERROR("%s - undefined state %d\n", __func__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
void sirdev_write_complete(struct sir_dev *dev)
{
unsigned long flags;
struct sk_buff *skb;
int actual = 0;
int err;
spin_lock_irqsave(&dev->tx_lock, flags);
IRDA_DEBUG(3, "%s() - dev->tx_buff.len = %d\n",
__func__, dev->tx_buff.len);
if (likely(dev->tx_buff.len > 0)) {
/* Write data left in transmit buffer */
actual = dev->drv->do_write(dev, dev->tx_buff.data, dev->tx_buff.len);
if (likely(actual>0)) {
dev->tx_buff.data += actual;
dev->tx_buff.len -= actual;
}
else if (unlikely(actual<0)) {
/* could be dropped later when we have tx_timeout to recover */
IRDA_ERROR("%s: drv->do_write failed (%d)\n",
__func__, actual);
if ((skb=dev->tx_skb) != NULL) {
dev->tx_skb = NULL;
dev_kfree_skb_any(skb);
dev->netdev->stats.tx_errors++;
dev->netdev->stats.tx_dropped++;
}
dev->tx_buff.len = 0;
}
if (dev->tx_buff.len > 0)
goto done; /* more data to send later */
}
if (unlikely(dev->raw_tx != 0)) {
/* in raw mode we are just done now after the buffer was sent
* completely. Since this was requested by some dongle driver
* running under the control of the irda-thread we must take
* care here not to re-enable the queue. The queue will be
* restarted when the irda-thread has completed the request.
*/
IRDA_DEBUG(3, "%s(), raw-tx done\n", __func__);
dev->raw_tx = 0;
goto done; /* no post-frame handling in raw mode */
}
/* we have finished now sending this skb.
* update statistics and free the skb.
* finally we check and trigger a pending speed change, if any.
* if not we switch to rx mode and wake the queue for further
* packets.
* note the scheduled speed request blocks until the lower
* client driver and the corresponding hardware has really
* finished sending all data (xmit fifo drained f.e.)
* before the speed change gets finally done and the queue
* re-activated.
*/
IRDA_DEBUG(5, "%s(), finished with frame!\n", __func__);
if ((skb=dev->tx_skb) != NULL) {
dev->tx_skb = NULL;
dev->netdev->stats.tx_packets++;
dev->netdev->stats.tx_bytes += skb->len;
dev_kfree_skb_any(skb);
}
if (unlikely(dev->new_speed > 0)) {
IRDA_DEBUG(5, "%s(), Changing speed!\n", __func__);
err = sirdev_schedule_speed(dev, dev->new_speed);
if (unlikely(err)) {
/* should never happen
* forget the speed change and hope the stack recovers
*/
IRDA_ERROR("%s - schedule speed change failed: %d\n",
__func__, err);
netif_wake_queue(dev->netdev);
}
/* else: success
* speed change in progress now
* on completion dev->new_speed gets cleared,
* rx-reenabled and the queue restarted
*/
}
else {
sirdev_enable_rx(dev);
netif_wake_queue(dev->netdev);
}
done:
spin_unlock_irqrestore(&dev->tx_lock, flags);
}
/*
* Function w83977af_open (iobase, irq)
*
* Open driver instance
*
*/
static int w83977af_open(int i, unsigned int iobase, unsigned int irq,
unsigned int dma)
{
struct net_device *dev;
struct w83977af_ir *self;
int err;
IRDA_DEBUG(0, "%s()\n", __func__ );
/* Lock the port that we need */
if (!request_region(iobase, CHIP_IO_EXTENT, driver_name)) {
IRDA_DEBUG(0, "%s(), can't get iobase of 0x%03x\n",
__func__ , iobase);
return -ENODEV;
}
if (w83977af_probe(iobase, irq, dma) == -1) {
err = -1;
goto err_out;
}
/*
* Allocate new instance of the driver
*/
dev = alloc_irdadev(sizeof(struct w83977af_ir));
if (dev == NULL) {
printk( KERN_ERR "IrDA: Can't allocate memory for "
"IrDA control block!\n");
err = -ENOMEM;
goto err_out;
}
self = netdev_priv(dev);
spin_lock_init(&self->lock);
/* Initialize IO */
self->io.fir_base = iobase;
self->io.irq = irq;
self->io.fir_ext = CHIP_IO_EXTENT;
self->io.dma = dma;
self->io.fifo_size = 32;
/* Initialize QoS for this device */
irda_init_max_qos_capabilies(&self->qos);
/* The only value we must override it the baudrate */
/* FIXME: The HP HDLS-1100 does not support 1152000! */
self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
/* The HP HDLS-1100 needs 1 ms according to the specs */
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 = 4000;
/* Allocate memory if needed */
self->rx_buff.head =
dma_alloc_coherent(NULL, self->rx_buff.truesize,
&self->rx_buff_dma, GFP_KERNEL);
if (self->rx_buff.head == NULL) {
err = -ENOMEM;
goto err_out1;
}
memset(self->rx_buff.head, 0, self->rx_buff.truesize);
self->tx_buff.head =
dma_alloc_coherent(NULL, self->tx_buff.truesize,
&self->tx_buff_dma, GFP_KERNEL);
if (self->tx_buff.head == NULL) {
err = -ENOMEM;
goto err_out2;
}
memset(self->tx_buff.head, 0, self->tx_buff.truesize);
self->rx_buff.in_frame = FALSE;
self->rx_buff.state = OUTSIDE_FRAME;
self->tx_buff.data = self->tx_buff.head;
self->rx_buff.data = self->rx_buff.head;
self->netdev = dev;
dev->netdev_ops = &w83977_netdev_ops;
err = register_netdev(dev);
if (err) {
IRDA_ERROR("%s(), register_netdevice() failed!\n", __func__);
goto err_out3;
}
IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
/* Need to store self somewhere */
dev_self[i] = self;
return 0;
err_out3:
dma_free_coherent(NULL, self->tx_buff.truesize,
self->tx_buff.head, self->tx_buff_dma);
err_out2:
dma_free_coherent(NULL, self->rx_buff.truesize,
self->rx_buff.head, self->rx_buff_dma);
err_out1:
free_netdev(dev);
err_out:
release_region(iobase, CHIP_IO_EXTENT);
return err;
}
static int girbil_change_speed(struct sir_dev *dev, unsigned speed)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control[2];
static int ret = 0;
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
/* dongle alread reset - port and dongle at default speed */
switch(state) {
case SIRDEV_STATE_DONGLE_SPEED:
/* Set DTR and Clear RTS to enter command mode */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
udelay(25); /* better wait a little while */
ret = 0;
switch (speed) {
default:
ret = -EINVAL;
/* fall through */
case 9600:
control[0] = GIRBIL_9600;
break;
case 19200:
control[0] = GIRBIL_19200;
break;
case 34800:
control[0] = GIRBIL_38400;
break;
case 57600:
control[0] = GIRBIL_57600;
break;
case 115200:
control[0] = GIRBIL_115200;
break;
}
control[1] = GIRBIL_LOAD;
/* Write control bytes */
sirdev_raw_write(dev, control, 2);
dev->speed = speed;
state = GIRBIL_STATE_WAIT_SPEED;
delay = 100;
break;
case GIRBIL_STATE_WAIT_SPEED:
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(25); /* better wait a little while */
break;
default:
IRDA_ERROR("%s - undefined state %d\n", __FUNCTION__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
