Function ixgbe_stop_adapter_generic

dpdk/drivers/net/ixgbe/base/ixgbe_common.c:1071–1114

* ixgbe_stop_adapter_generic - Generic stop Tx/Rx units * @hw: pointer to hardware structure * * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, * disables transmit and receive units. The adapter_stopped flag is used by * the shared code and drivers to determine if the adapter is in a stopped * state and should not touch the hardware. **/

 * state and should not touch the hardware.
 **/
s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
{
	u32 reg_val;
	u16 i;

	DEBUGFUNC("ixgbe_stop_adapter_generic");

	/*
	 * Set the adapter_stopped flag so other driver functions stop touching
	 * the hardware
	 */
	hw->adapter_stopped = true;

	/* Disable the receive unit */
	ixgbe_disable_rx(hw);

	/* Clear interrupt mask to stop interrupts from being generated */
	IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);

	/* Clear any pending interrupts, flush previous writes */
	IXGBE_READ_REG(hw, IXGBE_EICR);

	/* Disable the transmit unit.  Each queue must be disabled. */
	for (i = 0; i < hw->mac.max_tx_queues; i++)
		IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);

	/* Disable the receive unit by stopping each queue */
	for (i = 0; i < hw->mac.max_rx_queues; i++) {
		reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
		reg_val &= ~IXGBE_RXDCTL_ENABLE;
		reg_val |= IXGBE_RXDCTL_SWFLSH;
		IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
	}

	/* flush all queues disables */
	IXGBE_WRITE_FLUSH(hw);
	msec_delay(2);

	/*
	 * Prevent the PCI-E bus from hanging by disabling PCI-E master
	 * access and verify no pending requests
	 */
	return ixgbe_disable_pcie_master(hw);
}

/**
 * ixgbe_init_led_link_act_generic - Store the LED index link/activity.