Ejemplo n.º 1
0
/**
 * et131x_change_mtu - The handler called to change the MTU for the device
 * @netdev: device whose MTU is to be changed
 * @new_mtu: the desired MTU
 *
 * Returns 0 on success, errno on failure (as defined in errno.h)
 */
int et131x_change_mtu(struct net_device *netdev, int new_mtu)
{
	int result = 0;
	struct et131x_adapter *adapter = netdev_priv(netdev);

	/* Make sure the requested MTU is valid */
	if (new_mtu < 64 || new_mtu > 9216)
		return -EINVAL;

	/* Stop the netif queue */
	netif_stop_queue(netdev);

	/* Stop the Tx and Rx DMA engines */
	et131x_rx_dma_disable(adapter);
	et131x_tx_dma_disable(adapter);

	/* Disable device interrupts */
	et131x_disable_interrupts(adapter);
	et131x_handle_send_interrupt(adapter);
	et131x_handle_recv_interrupt(adapter);

	/* Set the new MTU */
	netdev->mtu = new_mtu;

	/* Free Rx DMA memory */
	et131x_adapter_memory_free(adapter);

	/* Set the config parameter for Jumbo Packet support */
	adapter->RegistryJumboPacket = new_mtu + 14;
	et131x_soft_reset(adapter);

	/* Alloc and init Rx DMA memory */
	result = et131x_adapter_memory_alloc(adapter);
	if (result != 0) {
		dev_warn(&adapter->pdev->dev,
			"Change MTU failed; couldn't re-alloc DMA memory\n");
		return result;
	}

	et131x_init_send(adapter);

	et131x_hwaddr_init(adapter);
	memcpy(netdev->dev_addr, adapter->CurrentAddress, ETH_ALEN);

	/* Init the device with the new settings */
	et131x_adapter_setup(adapter);

	/* Enable interrupts */
	if (adapter->Flags & fMP_ADAPTER_INTERRUPT_IN_USE)
		et131x_enable_interrupts(adapter);

	/* Restart the Tx and Rx DMA engines */
	et131x_rx_dma_enable(adapter);
	et131x_tx_dma_enable(adapter);

	/* Restart the netif queue */
	netif_wake_queue(netdev);
	return result;
}
Ejemplo n.º 2
0
/**
 * et131x_set_mac_addr - handler to change the MAC address for the device
 * @netdev: device whose MAC is to be changed
 * @new_mac: the desired MAC address
 *
 * Returns 0 on success, errno on failure (as defined in errno.h)
 *
 * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
 */
int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
{
	int result = 0;
	struct et131x_adapter *adapter = netdev_priv(netdev);
	struct sockaddr *address = new_mac;

	/* begin blux */

	if (adapter == NULL)
		return -ENODEV;

	/* Make sure the requested MAC is valid */
	if (!is_valid_ether_addr(address->sa_data))
		return -EINVAL;

	/* Stop the netif queue */
	netif_stop_queue(netdev);

	/* Stop the Tx and Rx DMA engines */
	et131x_rx_dma_disable(adapter);
	et131x_tx_dma_disable(adapter);

	/* Disable device interrupts */
	et131x_disable_interrupts(adapter);
	et131x_handle_send_interrupt(adapter);
	et131x_handle_recv_interrupt(adapter);

	/* Set the new MAC */
	/* netdev->set_mac_address  = &new_mac; */
	/* netdev->mtu = new_mtu; */

	memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);

	printk(KERN_INFO "%s: Setting MAC address to %pM\n",
			netdev->name, netdev->dev_addr);

	/* Free Rx DMA memory */
	et131x_adapter_memory_free(adapter);

	/* Set the config parameter for Jumbo Packet support */
	/* adapter->RegistryJumboPacket = new_mtu + 14; */
	/* blux: not needet here, we'll change the MAC */

	et131x_soft_reset(adapter);

	/* Alloc and init Rx DMA memory */
	result = et131x_adapter_memory_alloc(adapter);
	if (result != 0) {
		dev_err(&adapter->pdev->dev,
			"Change MAC failed; couldn't re-alloc DMA memory\n");
		return result;
	}

	et131x_init_send(adapter);

	et131x_hwaddr_init(adapter);

	/* Init the device with the new settings */
	et131x_adapter_setup(adapter);

	/* Enable interrupts */
	if (adapter->Flags & fMP_ADAPTER_INTERRUPT_IN_USE)
		et131x_enable_interrupts(adapter);

	/* Restart the Tx and Rx DMA engines */
	et131x_rx_dma_enable(adapter);
	et131x_tx_dma_enable(adapter);

	/* Restart the netif queue */
	netif_wake_queue(netdev);
	return result;
}
Ejemplo n.º 3
0
/**
 * et131x_isr_handler - The ISR handler
 * @p_adapter, a pointer to the device's private adapter structure
 *
 * scheduled to run in a deferred context by the ISR. This is where the ISR's
 * work actually gets done.
 */
void et131x_isr_handler(struct work_struct *work)
{
	struct et131x_adapter *etdev =
		container_of(work, struct et131x_adapter, task);
	u32 status = etdev->stats.InterruptStatus;
	struct address_map __iomem *iomem = etdev->regs;

	/*
	 * These first two are by far the most common.  Once handled, we clear
	 * their two bits in the status word.  If the word is now zero, we
	 * exit.
	 */
	/* Handle all the completed Transmit interrupts */
	if (status & ET_INTR_TXDMA_ISR)
		et131x_handle_send_interrupt(etdev);

	/* Handle all the completed Receives interrupts */
	if (status & ET_INTR_RXDMA_XFR_DONE)
		et131x_handle_recv_interrupt(etdev);

	status &= 0xffffffd7;

	if (status) {
		/* Handle the TXDMA Error interrupt */
		if (status & ET_INTR_TXDMA_ERR) {
			u32 txdma_err;

			/* Following read also clears the register (COR) */
			txdma_err = readl(&iomem->txdma.tx_dma_error);

			dev_warn(&etdev->pdev->dev,
				    "TXDMA_ERR interrupt, error = %d\n",
				    txdma_err);
		}

		/* Handle Free Buffer Ring 0 and 1 Low interrupt */
		if (status & (ET_INTR_RXDMA_FB_R0_LOW | ET_INTR_RXDMA_FB_R1_LOW)) {
			/*
			 * This indicates the number of unused buffers in
			 * RXDMA free buffer ring 0 is <= the limit you
			 * programmed. Free buffer resources need to be
			 * returned.  Free buffers are consumed as packets
			 * are passed from the network to the host. The host
			 * becomes aware of the packets from the contents of
			 * the packet status ring. This ring is queried when
			 * the packet done interrupt occurs. Packets are then
			 * passed to the OS. When the OS is done with the
			 * packets the resources can be returned to the
			 * ET1310 for re-use. This interrupt is one method of
			 * returning resources.
			 */

			/* If the user has flow control on, then we will
			 * send a pause packet, otherwise just exit
			 */
			if (etdev->flowcontrol == FLOW_TXONLY ||
			    etdev->flowcontrol == FLOW_BOTH) {
				u32 pm_csr;

				/* Tell the device to send a pause packet via
				 * the back pressure register (bp req  and
				 * bp xon/xoff)
				 */
				pm_csr = readl(&iomem->global.pm_csr);
				if ((pm_csr & ET_PM_PHY_SW_COMA) == 0)
					writel(3, &iomem->txmac.bp_ctrl);
			}
		}

		/* Handle Packet Status Ring Low Interrupt */
		if (status & ET_INTR_RXDMA_STAT_LOW) {

			/*
			 * Same idea as with the two Free Buffer Rings.
			 * Packets going from the network to the host each
			 * consume a free buffer resource and a packet status
			 * resource.  These resoures are passed to the OS.
			 * When the OS is done with the resources, they need
			 * to be returned to the ET1310. This is one method
			 * of returning the resources.
			 */
		}

		/* Handle RXDMA Error Interrupt */
		if (status & ET_INTR_RXDMA_ERR) {
			/*
			 * The rxdma_error interrupt is sent when a time-out
			 * on a request issued by the JAGCore has occurred or
			 * a completion is returned with an un-successful
			 * status.  In both cases the request is considered
			 * complete. The JAGCore will automatically re-try the
			 * request in question. Normally information on events
			 * like these are sent to the host using the "Advanced
			 * Error Reporting" capability. This interrupt is
			 * another way of getting similar information. The
			 * only thing required is to clear the interrupt by
			 * reading the ISR in the global resources. The
			 * JAGCore will do a re-try on the request.  Normally
			 * you should never see this interrupt. If you start
			 * to see this interrupt occurring frequently then
			 * something bad has occurred. A reset might be the
			 * thing to do.
			 */
			/* TRAP();*/

			dev_warn(&etdev->pdev->dev,
				    "RxDMA_ERR interrupt, error %x\n",
				    readl(&iomem->txmac.tx_test));
		}

		/* Handle the Wake on LAN Event */
		if (status & ET_INTR_WOL) {
			/*
			 * This is a secondary interrupt for wake on LAN.
			 * The driver should never see this, if it does,
			 * something serious is wrong. We will TRAP the
			 * message when we are in DBG mode, otherwise we
			 * will ignore it.
			 */
			dev_err(&etdev->pdev->dev, "WAKE_ON_LAN interrupt\n");
		}

		/* Handle the PHY interrupt */
		if (status & ET_INTR_PHY) {
			u32 pm_csr;
			u16 bmsr_ints;
			u16 bmsr_data;
			u16 myisr;

			/* If we are in coma mode when we get this interrupt,
			 * we need to disable it.
			 */
			pm_csr = readl(&iomem->global.pm_csr);
			if (pm_csr & ET_PM_PHY_SW_COMA) {
				/*
				 * Check to see if we are in coma mode and if
				 * so, disable it because we will not be able
				 * to read PHY values until we are out.
				 */
				DisablePhyComa(etdev);
			}

			/* Read the PHY ISR to clear the reason for the
			 * interrupt.
			 */
			MiRead(etdev, (uint8_t) offsetof(struct mi_regs, isr),
			       &myisr);

			if (!etdev->ReplicaPhyLoopbk) {
				MiRead(etdev,
				       (uint8_t) offsetof(struct mi_regs, bmsr),
				       &bmsr_data);

				bmsr_ints = etdev->bmsr ^ bmsr_data;
				etdev->bmsr = bmsr_data;

				/* Do all the cable in / cable out stuff */
				et131x_Mii_check(etdev, bmsr_data, bmsr_ints);
			}
		}
Ejemplo n.º 4
0
/**
 * et131x_set_mac_addr - handler to change the MAC address for the device
 * @netdev: device whose MAC is to be changed
 * @new_mac: the desired MAC address
 *
 * Returns 0 on success, errno on failure (as defined in errno.h)
 *
 * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
 */
int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
{
	int result = 0;
	struct et131x_adapter *adapter = netdev_priv(netdev);
	struct sockaddr *address = new_mac;

	DBG_ENTER(et131x_dbginfo);
	// begin blux
	// DBG_VERBOSE( et131x_dbginfo, "Function not implemented!!\n" );

	if (adapter == NULL) {
		DBG_LEAVE(et131x_dbginfo);
		return -ENODEV;
	}

	/* Make sure the requested MAC is valid */
	if (!is_valid_ether_addr(address->sa_data)) {
		DBG_LEAVE(et131x_dbginfo);
		return -EINVAL;
	}

	/* Stop the netif queue */
	netif_stop_queue(netdev);

	/* Stop the Tx and Rx DMA engines */
	et131x_rx_dma_disable(adapter);
	et131x_tx_dma_disable(adapter);

	/* Disable device interrupts */
	et131x_disable_interrupts(adapter);
	et131x_handle_send_interrupt(adapter);
	et131x_handle_recv_interrupt(adapter);

	/* Set the new MAC */
	// netdev->set_mac_address  = &new_mac;
	// netdev->mtu = new_mtu;

	memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);

	printk("%s: Setting MAC address to %02x:%02x:%02x:%02x:%02x:%02x\n",
	       netdev->name, netdev->dev_addr[0], netdev->dev_addr[1],
	       netdev->dev_addr[2], netdev->dev_addr[3], netdev->dev_addr[4],
	       netdev->dev_addr[5]);

	/* Free Rx DMA memory */
	et131x_adapter_memory_free(adapter);

	/* Set the config parameter for Jumbo Packet support */
	// adapter->RegistryJumboPacket = new_mtu + 14;
	// blux: not needet here, w'll change the MAC

	et131x_soft_reset(adapter);

	/* Alloc and init Rx DMA memory */
	result = et131x_adapter_memory_alloc(adapter);
	if (result != 0) {
		DBG_WARNING(et131x_dbginfo,
			    "Change MAC failed; couldn't re-alloc DMA memory\n");
		return result;
	}

	et131x_init_send(adapter);

	et131x_setup_hardware_properties(adapter);
	// memcpy( netdev->dev_addr, adapter->CurrentAddress, ETH_ALEN );
	// blux: no, do not override our nice address

	/* Init the device with the new settings */
	et131x_adapter_setup(adapter);

	/* Enable interrupts */
	if (MP_TEST_FLAG(adapter, fMP_ADAPTER_INTERRUPT_IN_USE)) {
		et131x_enable_interrupts(adapter);
	}

	/* Restart the Tx and Rx DMA engines */
	et131x_rx_dma_enable(adapter);
	et131x_tx_dma_enable(adapter);

	/* Restart the netif queue */
	netif_wake_queue(netdev);

	DBG_LEAVE(et131x_dbginfo);
	return result;
}