static void ks8842_reset_hw(struct ks8842_adapter *adapter)
{
/* reset the HW */
ks8842_reset(adapter);
/* Enable QMU Transmit flow control / transmit padding / Transmit CRC */
ks8842_write16(adapter, 16, 0x000E, REG_TXCR);
/* enable the receiver, uni + multi + broadcast + flow ctrl
+ crc strip */
ks8842_write16(adapter, 16, 0x8 | 0x20 | 0x40 | 0x80 | 0x400,
REG_RXCR);
/* TX frame pointer autoincrement */
ks8842_write16(adapter, 17, 0x4000, REG_TXFDPR);
/* RX frame pointer autoincrement */
ks8842_write16(adapter, 17, 0x4000, REG_RXFDPR);
/* RX 2 kb high watermark */
ks8842_write16(adapter, 0, 0x1000, REG_QRFCR);
/* aggressive back off in half duplex */
ks8842_enable_bits(adapter, 32, 1 << 8, REG_SGCR1);
/* enable no excessive collison drop */
ks8842_enable_bits(adapter, 32, 1 << 3, REG_SGCR2);
/* Enable port 1 force flow control / back pressure / transmit / recv */
ks8842_write16(adapter, 48, 0x1E07, REG_P1CR2);
/* restart port auto-negotiation */
ks8842_enable_bits(adapter, 49, 1 << 13, REG_P1CR4);
/* Enable the transmitter */
ks8842_enable_tx(adapter);
/* Enable the receiver */
ks8842_enable_rx(adapter);
/* clear all interrupts */
ks8842_write16(adapter, 18, 0xffff, REG_ISR);
/* enable interrupts */
if (KS8842_USE_DMA(adapter)) {
/* When running in DMA Mode the RX interrupt is not enabled in
timberdale because RX data is received by DMA callbacks
it must still be enabled in the KS8842 because it indicates
to timberdale when there is RX data for it's DMA FIFOs */
iowrite16(ENABLED_IRQS_DMA_IP, adapter->hw_addr + REG_TIMB_IER);
ks8842_write16(adapter, 18, ENABLED_IRQS_DMA, REG_IER);
} else {
if (!(adapter->conf_flags & MICREL_KS884X))
iowrite16(ENABLED_IRQS,
adapter->hw_addr + REG_TIMB_IER);
ks8842_write16(adapter, 18, ENABLED_IRQS, REG_IER);
}
/* enable the switch */
ks8842_write16(adapter, 32, 0x1, REG_SW_ID_AND_ENABLE);
}
static void ks8842_reset_hw(struct ks8842_adapter *adapter)
{
/* */
ks8842_reset(adapter);
/* */
ks8842_write16(adapter, 16, 0x000E, REG_TXCR);
/*
*/
ks8842_write16(adapter, 16, 0x8 | 0x20 | 0x40 | 0x80 | 0x400,
REG_RXCR);
/* */
ks8842_write16(adapter, 17, 0x4000, REG_TXFDPR);
/* */
ks8842_write16(adapter, 17, 0x4000, REG_RXFDPR);
/* */
ks8842_write16(adapter, 0, 0x1000, REG_QRFCR);
/* */
ks8842_enable_bits(adapter, 32, 1 << 8, REG_SGCR1);
/* */
ks8842_enable_bits(adapter, 32, 1 << 3, REG_SGCR2);
/* */
ks8842_write16(adapter, 48, 0x1E07, REG_P1CR2);
/* */
ks8842_enable_bits(adapter, 49, 1 << 13, REG_P1CR4);
/* */
ks8842_enable_tx(adapter);
/* */
ks8842_enable_rx(adapter);
/* */
ks8842_write16(adapter, 18, 0xffff, REG_ISR);
/* */
if (KS8842_USE_DMA(adapter)) {
/*
*/
iowrite16(ENABLED_IRQS_DMA_IP, adapter->hw_addr + REG_TIMB_IER);
ks8842_write16(adapter, 18, ENABLED_IRQS_DMA, REG_IER);
} else {
if (!(adapter->conf_flags & MICREL_KS884X))
iowrite16(ENABLED_IRQS,
adapter->hw_addr + REG_TIMB_IER);
ks8842_write16(adapter, 18, ENABLED_IRQS, REG_IER);
}
/* */
ks8842_write16(adapter, 32, 0x1, REG_SW_ID_AND_ENABLE);
}
static void ks8842_reset_hw(struct ks8842_adapter *adapter)
{
/* reset the HW */
ks8842_reset(adapter);
/* Enable QMU Transmit flow control / transmit padding / Transmit CRC */
ks8842_write16(adapter, 16, 0x000E, REG_TXCR);
/* enable the receiver, uni + multi + broadcast + flow ctrl
+ crc strip */
ks8842_write16(adapter, 16, 0x8 | 0x20 | 0x40 | 0x80 | 0x400,
REG_RXCR);
/* TX frame pointer autoincrement */
ks8842_write16(adapter, 17, 0x4000, REG_TXFDPR);
/* RX frame pointer autoincrement */
ks8842_write16(adapter, 17, 0x4000, REG_RXFDPR);
/* RX 2 kb high watermark */
ks8842_write16(adapter, 0, 0x1000, REG_QRFCR);
/* aggresive back off in half duplex */
ks8842_enable_bits(adapter, 32, 1 << 8, REG_SGCR1);
/* enable no excessive collison drop */
ks8842_enable_bits(adapter, 32, 1 << 3, REG_SGCR2);
/* Enable port 1 force flow control / back pressure / transmit / recv */
ks8842_write16(adapter, 48, 0x1E07, REG_P1CR2);
/* restart port auto-negotiation */
ks8842_enable_bits(adapter, 49, 1 << 13, REG_P1CR4);
/* only advertise 10Mbps */
ks8842_clear_bits(adapter, 49, 3 << 2, REG_P1CR4);
/* Enable the transmitter */
ks8842_enable_tx(adapter);
/* Enable the receiver */
ks8842_enable_rx(adapter);
/* clear all interrupts */
ks8842_write16(adapter, 18, 0xffff, REG_ISR);
/* enable interrupts */
ks8842_write16(adapter, 18, ENABLED_IRQS, REG_IER);
/* enable the switch */
ks8842_write16(adapter, 32, 0x1, REG_SW_ID_AND_ENABLE);
}
void ks8842_tasklet(unsigned long arg)
{
struct net_device *netdev = (struct net_device *)arg;
struct ks8842_adapter *adapter = netdev_priv(netdev);
u16 isr;
unsigned long flags;
u16 entry_bank;
/* read current bank to be able to set it back */
spin_lock_irqsave(&adapter->lock, flags);
entry_bank = ioread16(adapter->hw_addr + REG_SELECT_BANK);
spin_unlock_irqrestore(&adapter->lock, flags);
isr = ks8842_read16(adapter, 18, REG_ISR);
dev_dbg(&adapter->pdev->dev, "%s - ISR: 0x%x\n", __func__, isr);
/* Ack */
ks8842_write16(adapter, 18, isr, REG_ISR);
if (!netif_running(netdev))
return;
if (isr & IRQ_LINK_CHANGE)
ks8842_update_link_status(netdev, adapter);
if (isr & (IRQ_RX | IRQ_RX_ERROR))
ks8842_handle_rx(netdev, adapter);
if (isr & IRQ_TX)
ks8842_handle_tx(netdev, adapter);
if (isr & IRQ_RX_OVERRUN)
ks8842_handle_rx_overrun(netdev, adapter);
if (isr & IRQ_TX_STOPPED) {
ks8842_disable_tx(adapter);
ks8842_enable_tx(adapter);
}
if (isr & IRQ_RX_STOPPED) {
ks8842_disable_rx(adapter);
ks8842_enable_rx(adapter);
}
/* re-enable interrupts, put back the bank selection register */
spin_lock_irqsave(&adapter->lock, flags);
ks8842_write16(adapter, 18, ENABLED_IRQS, REG_IER);
iowrite16(entry_bank, adapter->hw_addr + REG_SELECT_BANK);
spin_unlock_irqrestore(&adapter->lock, flags);
}