[PATCH] AT91RM9200 Ethernet: Add netpoll / netconsole support

[cascardo/linux.git] / drivers / net / ibmveth.c

diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index bd79d67..99343b5 100644 (file)
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -50,7 +50,6 @@
 #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>
@@ -93,7 +92,7 @@ static void ibmveth_proc_register_driver(void);
 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;
 
@@ -212,7 +211,8 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc
                        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);
@@ -238,7 +238,10 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc
                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);
@@ -325,7 +328,10 @@ static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64
                         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();
@@ -527,6 +533,8 @@ static int ibmveth_open(struct net_device *netdev)
        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 = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address);
 
        if(lpar_rc != H_SUCCESS) {
@@ -563,7 +571,7 @@ static int ibmveth_open(struct net_device *netdev)
        }
 
        ibmveth_debug_printk("initial replenish cycle\n");
-       ibmveth_interrupt(netdev->irq, netdev, NULL);
+       ibmveth_interrupt(netdev->irq, netdev);
 
        netif_start_queue(netdev);
 
@@ -836,7 +844,7 @@ static int ibmveth_poll(struct net_device *netdev, int *budget)
        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;
@@ -929,7 +937,7 @@ static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 static void ibmveth_poll_controller(struct net_device *dev)
 {
        ibmveth_replenish_task(dev->priv);
-       ibmveth_interrupt(dev->irq, dev, NULL);
+       ibmveth_interrupt(dev->irq, dev);
 }
 #endif
 
@@ -991,8 +999,6 @@ static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_
        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;
@@ -1106,7 +1112,6 @@ static int ibmveth_seq_show(struct seq_file *seq, void *v)
        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]);
@@ -1163,7 +1168,9 @@ static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
 {
        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 {
@@ -1178,7 +1185,9 @@ static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
 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);
        }
 }
 
@@ -1292,7 +1301,7 @@ const char * buf, size_t count)
        }
 
        /* kick the interrupt handler to allocate/deallocate pools */
-       ibmveth_interrupt(netdev->irq, netdev, NULL);
+       ibmveth_interrupt(netdev->irq, netdev);
        return count;
 }