static int c2_down(struct net_device *netdev)
{
struct c2_port *c2_port = netdev_priv(netdev);
struct c2_dev *c2dev = c2_port->c2dev;
if (netif_msg_ifdown(c2_port))
pr_debug("%s: disabling interface\n",
netdev->name);
c2_tx_interrupt(netdev);
netif_stop_queue(netdev);
writel(1, c2dev->regs + C2_IDIS);
writel(0, c2dev->regs + C2_NIMR0);
c2_reset(c2_port);
c2_tx_clean(c2_port);
c2_rx_clean(c2_port);
kfree(c2_port->rx_ring.start);
kfree(c2_port->tx_ring.start);
pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem,
c2_port->dma);
return 0;
}
static int c2_down(struct net_device *netdev)
{
struct c2_port *c2_port = netdev_priv(netdev);
struct c2_dev *c2dev = c2_port->c2dev;
if (netif_msg_ifdown(c2_port))
pr_debug("%s: disabling interface\n",
netdev->name);
/* Wait for all the queued packets to get sent */
c2_tx_interrupt(netdev);
/* Disable network packets */
netif_stop_queue(netdev);
/* Disable IRQs by clearing the interrupt mask */
writel(1, c2dev->regs + C2_IDIS);
writel(0, c2dev->regs + C2_NIMR0);
/* missing: Stop transmitter */
/* missing: Stop receiver */
/* Reset the adapter, ensures the driver is in sync with the RXP */
c2_reset(c2_port);
/* missing: Turn off LEDs here */
/* Free all buffers in the host descriptor rings */
c2_tx_clean(c2_port);
c2_rx_clean(c2_port);
/* Free the host descriptor rings */
kfree(c2_port->rx_ring.start);
kfree(c2_port->tx_ring.start);
pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem,
c2_port->dma);
return 0;
}
static int c2_up(struct net_device *netdev)
{
struct c2_port *c2_port = netdev_priv(netdev);
struct c2_dev *c2dev = c2_port->c2dev;
struct c2_element *elem;
struct c2_rxp_hdr *rxp_hdr;
struct in_device *in_dev;
size_t rx_size, tx_size;
int ret, i;
unsigned int netimr0;
if (netif_msg_ifup(c2_port))
pr_debug("%s: enabling interface\n", netdev->name);
c2_set_rxbufsize(c2_port);
rx_size = c2_port->rx_ring.count * sizeof(struct c2_rx_desc);
tx_size = c2_port->tx_ring.count * sizeof(struct c2_tx_desc);
c2_port->mem_size = tx_size + rx_size;
c2_port->mem = pci_alloc_consistent(c2dev->pcidev, c2_port->mem_size,
&c2_port->dma);
if (c2_port->mem == NULL) {
pr_debug("Unable to allocate memory for "
"host descriptor rings\n");
return -ENOMEM;
}
memset(c2_port->mem, 0, c2_port->mem_size);
if ((ret =
c2_rx_ring_alloc(&c2_port->rx_ring, c2_port->mem, c2_port->dma,
c2dev->mmio_rxp_ring))) {
pr_debug("Unable to create RX ring\n");
goto bail0;
}
if (c2_rx_fill(c2_port)) {
pr_debug("Unable to fill RX ring\n");
goto bail1;
}
if ((ret = c2_tx_ring_alloc(&c2_port->tx_ring, c2_port->mem + rx_size,
c2_port->dma + rx_size,
c2dev->mmio_txp_ring))) {
pr_debug("Unable to create TX ring\n");
goto bail1;
}
c2_port->tx_avail = c2_port->tx_ring.count - 1;
c2_port->tx_ring.to_use = c2_port->tx_ring.to_clean =
c2_port->tx_ring.start + c2dev->cur_tx;
BUG_ON(c2_port->tx_ring.to_use != c2_port->tx_ring.to_clean);
c2_reset(c2_port);
for (i = 0, elem = c2_port->rx_ring.start; i < c2_port->rx_ring.count;
i++, elem++) {
rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data;
rxp_hdr->flags = 0;
__raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY),
elem->hw_desc + C2_RXP_FLAGS);
}
netif_start_queue(netdev);
writel(0, c2dev->regs + C2_IDIS);
netimr0 = readl(c2dev->regs + C2_NIMR0);
netimr0 &= ~(C2_PCI_HTX_INT | C2_PCI_HRX_INT);
writel(netimr0, c2dev->regs + C2_NIMR0);
in_dev = in_dev_get(netdev);
IN_DEV_CONF_SET(in_dev, ARP_IGNORE, 1);
in_dev_put(in_dev);
return 0;
bail1:
c2_rx_clean(c2_port);
kfree(c2_port->rx_ring.start);
bail0:
pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem,
c2_port->dma);
return ret;
}
static int c2_up(struct net_device *netdev)
{
struct c2_port *c2_port = netdev_priv(netdev);
struct c2_dev *c2dev = c2_port->c2dev;
struct c2_element *elem;
struct c2_rxp_hdr *rxp_hdr;
struct in_device *in_dev;
size_t rx_size, tx_size;
int ret, i;
unsigned int netimr0;
if (netif_msg_ifup(c2_port))
pr_debug("%s: enabling interface\n", netdev->name);
/* Set the Rx buffer size based on MTU */
c2_set_rxbufsize(c2_port);
/* Allocate DMA'able memory for Tx/Rx host descriptor rings */
rx_size = c2_port->rx_ring.count * sizeof(struct c2_rx_desc);
tx_size = c2_port->tx_ring.count * sizeof(struct c2_tx_desc);
c2_port->mem_size = tx_size + rx_size;
c2_port->mem = pci_alloc_consistent(c2dev->pcidev, c2_port->mem_size,
&c2_port->dma);
if (c2_port->mem == NULL) {
pr_debug("Unable to allocate memory for "
"host descriptor rings\n");
return -ENOMEM;
}
memset(c2_port->mem, 0, c2_port->mem_size);
/* Create the Rx host descriptor ring */
if ((ret =
c2_rx_ring_alloc(&c2_port->rx_ring, c2_port->mem, c2_port->dma,
c2dev->mmio_rxp_ring))) {
pr_debug("Unable to create RX ring\n");
goto bail0;
}
/* Allocate Rx buffers for the host descriptor ring */
if (c2_rx_fill(c2_port)) {
pr_debug("Unable to fill RX ring\n");
goto bail1;
}
/* Create the Tx host descriptor ring */
if ((ret = c2_tx_ring_alloc(&c2_port->tx_ring, c2_port->mem + rx_size,
c2_port->dma + rx_size,
c2dev->mmio_txp_ring))) {
pr_debug("Unable to create TX ring\n");
goto bail1;
}
/* Set the TX pointer to where we left off */
c2_port->tx_avail = c2_port->tx_ring.count - 1;
c2_port->tx_ring.to_use = c2_port->tx_ring.to_clean =
c2_port->tx_ring.start + c2dev->cur_tx;
/* missing: Initialize MAC */
BUG_ON(c2_port->tx_ring.to_use != c2_port->tx_ring.to_clean);
/* Reset the adapter, ensures the driver is in sync with the RXP */
c2_reset(c2_port);
/* Reset the READY bit in the sk_buff RXP headers & adapter HRXDQ */
for (i = 0, elem = c2_port->rx_ring.start; i < c2_port->rx_ring.count;
i++, elem++) {
rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data;
rxp_hdr->flags = 0;
__raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY),
elem->hw_desc + C2_RXP_FLAGS);
}
/* Enable network packets */
netif_start_queue(netdev);
/* Enable IRQ */
writel(0, c2dev->regs + C2_IDIS);
netimr0 = readl(c2dev->regs + C2_NIMR0);
netimr0 &= ~(C2_PCI_HTX_INT | C2_PCI_HRX_INT);
writel(netimr0, c2dev->regs + C2_NIMR0);
/* Tell the stack to ignore arp requests for ipaddrs bound to
* other interfaces. This is needed to prevent the host stack
* from responding to arp requests to the ipaddr bound on the
* rdma interface.
*/
in_dev = in_dev_get(netdev);
IN_DEV_CONF_SET(in_dev, ARP_IGNORE, 1);
in_dev_put(in_dev);
return 0;
bail1:
c2_rx_clean(c2_port);
kfree(c2_port->rx_ring.start);
bail0:
pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem,
c2_port->dma);
return ret;
}
