#include <asm/semaphore.h>
#include <asm/hvcall.h>
#include <asm/atomic.h>
-#include <asm/iommu.h>
#include <asm/vio.h>
#include <asm/uaccess.h>
#include <linux/seq_file.h>
static void ibmveth_proc_unregister_driver(void);
static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter);
static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
-static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
+static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance);
static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter);
static struct kobj_type ktype_veth_pool;
break;
}
- free_index = pool->consumer_index++ % pool->size;
+ free_index = pool->consumer_index;
+ pool->consumer_index = (pool->consumer_index + 1) % pool->size;
index = pool->free_map[free_index];
ibmveth_assert(index != IBM_VETH_INVALID_MAP);
if(lpar_rc != H_SUCCESS) {
pool->free_map[free_index] = index;
pool->skbuff[index] = NULL;
- pool->consumer_index--;
+ if (pool->consumer_index == 0)
+ pool->consumer_index = pool->size - 1;
+ else
+ pool->consumer_index--;
dma_unmap_single(&adapter->vdev->dev,
pool->dma_addr[index], pool->buff_size,
DMA_FROM_DEVICE);
adapter->rx_buff_pool[pool].buff_size,
DMA_FROM_DEVICE);
- free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size;
+ free_index = adapter->rx_buff_pool[pool].producer_index;
+ adapter->rx_buff_pool[pool].producer_index
+ = (adapter->rx_buff_pool[pool].producer_index + 1)
+ % adapter->rx_buff_pool[pool].size;
adapter->rx_buff_pool[pool].free_map[free_index] = index;
mb();
&adapter->rx_buff_pool[i]);
}
+static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter,
+ union ibmveth_buf_desc rxq_desc, u64 mac_address)
+{
+ int rc, try_again = 1;
+
+ /* After a kexec the adapter will still be open, so our attempt to
+ * open it will fail. So if we get a failure we free the adapter and
+ * try again, but only once. */
+retry:
+ rc = h_register_logical_lan(adapter->vdev->unit_address,
+ adapter->buffer_list_dma, rxq_desc.desc,
+ adapter->filter_list_dma, mac_address);
+
+ if (rc != H_SUCCESS && try_again) {
+ do {
+ rc = h_free_logical_lan(adapter->vdev->unit_address);
+ } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY));
+
+ try_again = 0;
+ goto retry;
+ }
+
+ return rc;
+}
+
static int ibmveth_open(struct net_device *netdev)
{
struct ibmveth_adapter *adapter = netdev->priv;
ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr);
ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr);
+ h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
- lpar_rc = h_register_logical_lan(adapter->vdev->unit_address,
- adapter->buffer_list_dma,
- rxq_desc.desc,
- adapter->filter_list_dma,
- mac_address);
+ lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address);
if(lpar_rc != H_SUCCESS) {
ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc);
}
ibmveth_debug_printk("initial replenish cycle\n");
- ibmveth_interrupt(netdev->irq, netdev, NULL);
+ ibmveth_interrupt(netdev->irq, netdev);
netif_start_queue(netdev);
return 0;
}
-static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
+static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
{
struct net_device *netdev = dev_instance;
struct ibmveth_adapter *adapter = netdev->priv;
return -EINVAL;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void ibmveth_poll_controller(struct net_device *dev)
+{
+ ibmveth_replenish_task(dev->priv);
+ ibmveth_interrupt(dev->irq, dev);
+}
+#endif
+
static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
{
int rc, i;
adapter->mac_addr = 0;
memcpy(&adapter->mac_addr, mac_addr_p, 6);
- adapter->liobn = dev->iommu_table->it_index;
-
netdev->irq = dev->irq;
netdev->open = ibmveth_open;
netdev->poll = ibmveth_poll;
netdev->ethtool_ops = &netdev_ethtool_ops;
netdev->change_mtu = ibmveth_change_mtu;
SET_NETDEV_DEV(netdev, &dev->dev);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ netdev->poll_controller = ibmveth_poll_controller;
+#endif
netdev->features |= NETIF_F_LLTX;
spin_lock_init(&adapter->stats_lock);
seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version);
seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address);
- seq_printf(seq, "LIOBN: 0x%lx\n", adapter->liobn);
seq_printf(seq, "Current MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
current_mac[0], current_mac[1], current_mac[2],
current_mac[3], current_mac[4], current_mac[5]);
{
struct proc_dir_entry *entry;
if (ibmveth_proc_dir) {
- entry = create_proc_entry(adapter->netdev->name, S_IFREG, ibmveth_proc_dir);
+ char u_addr[10];
+ sprintf(u_addr, "%x", adapter->vdev->unit_address);
+ entry = create_proc_entry(u_addr, S_IFREG, ibmveth_proc_dir);
if (!entry) {
ibmveth_error_printk("Cannot create adapter proc entry");
} else {
static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
{
if (ibmveth_proc_dir) {
- remove_proc_entry(adapter->netdev->name, ibmveth_proc_dir);
+ char u_addr[10];
+ sprintf(u_addr, "%x", adapter->vdev->unit_address);
+ remove_proc_entry(u_addr, ibmveth_proc_dir);
}
}
}
/* kick the interrupt handler to allocate/deallocate pools */
- ibmveth_interrupt(netdev->irq, netdev, NULL);
+ ibmveth_interrupt(netdev->irq, netdev);
return count;
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff