/* hard_xmit interface of irda device */
static int pxa_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct pxa_irda *si = netdev_priv(dev);
int speed = irda_get_next_speed(skb);
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != si->speed && speed != -1)
si->newspeed = speed;
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
pxa_irda_set_speed(si, speed);
}
dev_kfree_skb(skb);
return 0;
}
netif_stop_queue(dev);
if (!IS_FIR(si)) {
si->tx_buff.data = si->tx_buff.head;
si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, si->tx_buff.truesize);
/* Disable STUART interrupts and switch to transmit mode. */
STIER = 0;
STISR = IrSR_IR_TRANSMIT_ON | IrSR_XMODE_PULSE_1_6;
/* enable STUART and transmit interrupts */
STIER = IER_UUE | IER_TIE;
} else {
unsigned long mtt = irda_get_mtt(skb);
si->dma_tx_buff_len = skb->len;
skb_copy_from_linear_data(skb, si->dma_tx_buff, skb->len);
if (mtt)
while ((unsigned)(OSCR - si->last_oscr)/4 < mtt)
cpu_relax();
/* stop RX DMA, disable FICP */
DCSR(si->rxdma) &= ~DCSR_RUN;
ICCR0 = 0;
pxa_irda_fir_dma_tx_start(si);
ICCR0 = ICCR0_ITR | ICCR0_TXE;
}
dev_kfree_skb(skb);
dev->trans_start = jiffies;
return 0;
}
static int omap_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct omap_irda *omap_ir = netdev_priv(dev);
int speed = irda_get_next_speed(skb);
int mtt = irda_get_mtt(skb);
int xbofs = irda_get_next_xbofs(skb);
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != omap_ir->speed && speed != -1)
omap_ir->newspeed = speed;
if (xbofs) /* Set number of addtional BOFS */
uart_reg_out(UART3_EBLR, xbofs + 1);
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (omap_ir->newspeed) {
omap_ir->newspeed = 0;
omap_irda_set_speed(dev, speed);
}
dev_kfree_skb(skb);
return 0;
}
netif_stop_queue(dev);
/* Copy skb data to DMA buffer */
skb_copy_from_linear_data(skb, omap_ir->tx_buf_dma_virt, skb->len);
/* Copy skb data to DMA buffer */
omap_ir->stats.tx_bytes += skb->len;
/* Set frame length */
uart_reg_out(UART3_TXFLL, (skb->len & 0xff));
uart_reg_out(UART3_TXFLH, (skb->len >> 8));
if (mtt > 1000)
mdelay(mtt / 1000);
else
udelay(mtt);
/* Start TX DMA transfer */
omap_start_tx_dma(omap_ir, skb->len);
/* We can free skb now because it's already in DMA buffer */
dev_kfree_skb(skb);
dev->trans_start = jiffies;
return 0;
}
static int pxa_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct pxa_irda *si = netdev_priv(dev);
int speed = irda_get_next_speed(skb);
if (speed != si->speed && speed != -1)
si->newspeed = speed;
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
pxa_irda_set_speed(si, speed);
}
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
netif_stop_queue(dev);
if (!IS_FIR(si)) {
si->tx_buff.data = si->tx_buff.head;
si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, si->tx_buff.truesize);
STIER = 0;
STISR = IrSR_IR_TRANSMIT_ON | IrSR_XMODE_PULSE_1_6;
STIER = IER_UUE | IER_TIE;
} else {
unsigned long mtt = irda_get_mtt(skb);
si->dma_tx_buff_len = skb->len;
skb_copy_from_linear_data(skb, si->dma_tx_buff, skb->len);
if (mtt)
while ((unsigned)(OSCR - si->last_oscr)/4 < mtt)
cpu_relax();
DCSR(si->rxdma) &= ~DCSR_RUN;
ICCR0 = 0;
pxa_irda_fir_dma_tx_start(si);
ICCR0 = ICCR0_ITR | ICCR0_TXE;
}
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
static int bfin_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bfin_sir_self *self = netdev_priv(dev);
int speed = irda_get_next_speed(skb);
netif_stop_queue(dev);
self->mtt = irda_get_mtt(skb);
if (speed != self->speed && speed != -1)
self->newspeed = speed;
self->tx_buff.data = self->tx_buff.head;
if (skb->len == 0)
self->tx_buff.len = 0;
else
self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, self->tx_buff.truesize);
schedule_work(&self->work);
dev_kfree_skb(skb);
return 0;
}
static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct sa1100_irda *si = dev->priv;
int speed = irda_get_next_speed(skb);
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != si->speed && speed != -1)
si->newspeed = speed;
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
sa1100_irda_set_speed(si, speed);
}
dev_kfree_skb(skb);
return 0;
}
if (!IS_FIR(si)) {
netif_stop_queue(dev);
si->tx_buff.data = si->tx_buff.head;
si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data,
si->tx_buff.truesize);
/*
* Set the transmit interrupt enable. This will fire
* off an interrupt immediately. Note that we disable
* the receiver so we won't get spurious characteres
* received.
*/
Ser2UTCR3 = UTCR3_TIE | UTCR3_TXE;
dev_kfree_skb(skb);
} else {
int mtt = irda_get_mtt(skb);
/*
* We must not be transmitting...
*/
if (si->txskb)
BUG();
netif_stop_queue(dev);
si->txskb = skb;
si->txbuf_dma = dma_map_single(si->dev, skb->data,
skb->len, DMA_TO_DEVICE);
sa1100_start_dma(si->txdma, si->txbuf_dma, skb->len);
/*
* If we have a mean turn-around time, impose the specified
* specified delay. We could shorten this by timing from
* the point we received the packet.
*/
if (mtt)
udelay(mtt);
Ser2HSCR0 = si->hscr0 | HSCR0_HSSP | HSCR0_TXE;
}
dev->trans_start = jiffies;
return 0;
}
static int omap1610_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct omap1610_irda *si = dev->priv;
int speed = irda_get_next_speed(skb);
int mtt = irda_get_mtt(skb);
int xbofs = irda_get_next_xbofs(skb);
__ECHO_IN;
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != si->speed && speed != -1)
si->newspeed = speed;
if (xbofs) {
/* Set number of addtional BOFS */
omap_writeb(xbofs + 1, UART3_EBLR);
}
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
omap1610_irda_set_speed(dev, speed);
}
dev_kfree_skb(skb);
return 0;
}
netif_stop_queue(dev);
/* Copy skb data to DMA buffer */
memcpy(si->tx_buf_dma_virt, skb->data, skb->len);
si->stats.tx_bytes += skb->len;
/* Set frame length */
omap_writeb((skb->len & 0xff), UART3_TXFLL);
omap_writeb((skb->len >> 8), UART3_TXFLH);
if (mtt > 1000)
mdelay(mtt / 1000);
else
udelay(mtt);
/* Start TX DMA transfer */
omap1610_start_tx_dma(si, skb->len);
/* We can free skb now because it's already in DMA buffer */
dev_kfree_skb(skb);
dev->trans_start = jiffies;
__ECHO_OUT;
return 0;
}
static int pxa250_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct pxa250_irda *si = dev->priv;
int speed = irda_get_next_speed(skb);
int mtt;
__ECHO_IN;
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != si->speed && speed != -1)
si->newspeed = speed;
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
pxa250_irda_set_speed(dev, speed);
}
dev_kfree_skb(skb);
return 0;
}
DBG("stop queue\n");
netif_stop_queue(dev);
if(!IS_FIR(si))
{
si->tx_buff.data = si->tx_buff.head;
si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data,
si->tx_buff.truesize);
pxa250_sir_transmit(dev);
dev_kfree_skb(skb);
dev->trans_start = jiffies;
return 0;
}
else /* FIR */
{
DBG("Enter FIR transmit\n");
/*
* We must not be transmitting...
*/
if (si->txskb)
BUG();
disable_irq(si->fir_irq);
netif_stop_queue(dev);
DBG("queue stoped\n");
si->txskb = skb;
/* we could not just map so we'll need some triks */
/* skb->data may be not DMA capable -Sed- */
if (skb->len > TXBUFF_MAX_SIZE)
{
printk (KERN_ERR "skb data too large\n");
printk (KERN_ERR "len=%d",skb->len);
BUG();
}
DBG("gonna copy %d bytes to txbuf\n",skb->len);
memcpy (si->txbuf_dma_virt, skb->data , skb->len);
/* Actual sending ;must not be receiving !!! */
/* Write data and source address */
DBG("ICSR1 & RNE =%d\n",(ICSR1 & ICSR1_RNE) ? 1 : 0 );
/*Disable receiver and enable transifer */
ICCR0 &= ~ICCR0_RXE;
if (ICSR1 & ICSR1_TBY)
BUG();
ICCR0 |= ICCR0_TXE;
DBG("FICP status %x\n",ICSR0);
if (0){
int i;
DBG("sending packet\n");
for (i=0;i<skb->len;i++)
(i % 64) ? printk ("%2x ",skb->data[i]) : printk ("%2x \n",skb->data[i]) ;
DBG(" done\n");
}
/*
* If we have a mean turn-around time, impose the specified
* specified delay. We could shorten this by timing from
* the point we received the packet.
*/
mtt = irda_get_mtt(skb);
if(mtt)
udelay(mtt);
DCSR(si->txdma_ch)=0;
DCSR(si->txdma_ch)=DCSR_NODESC;
DSADR(si->txdma_ch) = si->txbuf_dma; /* phisic address */
DTADR(si->txdma_ch) = __PREG(ICDR);
DCMD(si->txdma_ch) = DCMD_ENDIRQEN| DCMD_INCSRCADDR | DCMD_FLOWTRG | DCMD_BURST8 | DCMD_WIDTH1 | skb->len;
DCSR(si->txdma_ch) = DCSR_ENDINTR | DCSR_BUSERR;
DCSR(si->txdma_ch) = DCSR_RUN | DCSR_NODESC ;
DBG("FICP status %x\n",ICSR0);
return 0;
}
}
