static irqreturn_t bfin_sir_dma_rx_int(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct bfin_sir_self *self = netdev_priv(dev);
struct bfin_sir_port *port = self->sir_port;
unsigned short irqstat;
spin_lock(&self->lock);
port->rx_dma_nrows++;
port->rx_dma_buf.tail = DMA_SIR_RX_XCNT * port->rx_dma_nrows;
bfin_sir_dma_rx_chars(dev);
if (port->rx_dma_nrows >= DMA_SIR_RX_YCNT) {
port->rx_dma_nrows = 0;
port->rx_dma_buf.tail = 0;
}
port->rx_dma_buf.head = port->rx_dma_buf.tail;
irqstat = get_dma_curr_irqstat(port->rx_dma_channel);
clear_dma_irqstat(port->rx_dma_channel);
spin_unlock(&self->lock);
mod_timer(&port->rx_dma_timer, jiffies + DMA_SIR_RX_FLUSH_JIFS);
return IRQ_HANDLED;
}
static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
unsigned short irqstat;
int x_pos, pos;
spin_lock(&uart->rx_lock);
irqstat = get_dma_curr_irqstat(uart->rx_dma_channel);
clear_dma_irqstat(uart->rx_dma_channel);
uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows;
if (uart->rx_dma_nrows == DMA_RX_YCOUNT || x_pos == 0)
uart->rx_dma_nrows = 0;
pos = uart->rx_dma_nrows * DMA_RX_XCOUNT;
if (pos > uart->rx_dma_buf.tail ||
uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {
uart->rx_dma_buf.head = pos;
bfin_serial_dma_rx_chars(uart);
uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
}
spin_unlock(&uart->rx_lock);
return IRQ_HANDLED;
}
static irqreturn_t bfin_sir_dma_tx_int(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct bfin_sir_self *self = netdev_priv(dev);
struct bfin_sir_port *port = self->sir_port;
spin_lock(&self->lock);
if (!(get_dma_curr_irqstat(port->tx_dma_channel) & DMA_RUN)) {
clear_dma_irqstat(port->tx_dma_channel);
bfin_sir_stop_tx(port);
self->stats.tx_packets++;
self->stats.tx_bytes += self->tx_buff.len;
self->tx_buff.len = 0;
if (self->newspeed) {
bfin_sir_set_speed(port, self->newspeed);
self->speed = self->newspeed;
self->newspeed = 0;
}
bfin_sir_enable_rx(port);
/* I'm hungry! */
netif_wake_queue(dev);
port->tx_done = 1;
}
spin_unlock(&self->lock);
return IRQ_HANDLED;
}
static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
struct circ_buf *xmit = &uart->port.state->xmit;
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) {
uart->scts = 0;
uart_handle_cts_change(&uart->port, uart->scts);
}
#endif
spin_lock(&uart->port.lock);
if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
disable_dma(uart->tx_dma_channel);
clear_dma_irqstat(uart->tx_dma_channel);
/* Anomaly notes:
* 05000215 - we always clear ETBEI within last UART TX
* interrupt to end a string. It is always set
* when start a new tx.
*/
UART_CLEAR_IER(uart, ETBEI);
xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
uart->port.icount.tx += uart->tx_count;
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&uart->port);
bfin_serial_dma_tx_chars(uart);
}
spin_unlock(&uart->port.lock);
return IRQ_HANDLED;
}
static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
struct circ_buf *xmit = &uart->port.info->xmit;
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) {
uart->scts = 0;
uart_handle_cts_change(&uart->port, uart->scts);
}
#endif
spin_lock(&uart->port.lock);
if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
disable_dma(uart->tx_dma_channel);
clear_dma_irqstat(uart->tx_dma_channel);
UART_CLEAR_IER(uart, ETBEI);
xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
uart->port.icount.tx += uart->tx_count;
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&uart->port);
bfin_serial_dma_tx_chars(uart);
}
spin_unlock(&uart->port.lock);
return IRQ_HANDLED;
}
static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
unsigned short irqstat;
spin_lock(&uart->port.lock);
irqstat = get_dma_curr_irqstat(uart->rx_dma_channel);
clear_dma_irqstat(uart->rx_dma_channel);
bfin_serial_dma_rx_chars(uart);
spin_unlock(&uart->port.lock);
return IRQ_HANDLED;
}
static irqreturn_t sport_rx_irq(int irq, void *dev_id)
{
struct sport_device *sport = dev_id;
unsigned long status;
status = get_dma_curr_irqstat(sport->rx_dma_chan);
if (status & (DMA_DONE|DMA_ERR)) {
clear_dma_irqstat(sport->rx_dma_chan);
SSYNC();
}
if (sport->rx_callback)
sport->rx_callback(sport->rx_data);
return IRQ_HANDLED;
}
static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
struct circ_buf *xmit = &uart->port.info->xmit;
spin_lock(&uart->port.lock);
if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
disable_dma(uart->tx_dma_channel);
clear_dma_irqstat(uart->tx_dma_channel);
UART_CLEAR_IER(uart, ETBEI);
xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
uart->port.icount.tx += uart->tx_count;
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&uart->port);
bfin_serial_dma_tx_chars(uart);
}
spin_unlock(&uart->port.lock);
return IRQ_HANDLED;
}
