forcedeth: recover error support

This patch adds another type of recoverable error to the driver. It also
modifies the sequence for recovery to include a mac reset and clearing
of interrupts.

Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index cb41897f286e..e32b8e481b31 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -102,7 +102,7 @@
 enum {
         NvRegIrqStatus = 0x000,
 #define NVREG_IRQSTAT_MIIEVENT  0x040
-#define NVREG_IRQSTAT_MASK              0x81ff
+#define NVREG_IRQSTAT_MASK              0x83ff
         NvRegIrqMask = 0x004,
 #define NVREG_IRQ_RX_ERROR              0x0001
 #define NVREG_IRQ_RX                    0x0002
@@ -113,7 +113,7 @@ enum {
 #define NVREG_IRQ_LINK                  0x0040
 #define NVREG_IRQ_RX_FORCED             0x0080
 #define NVREG_IRQ_TX_FORCED             0x0100
-#define NVREG_IRQ_RECOVER_ERROR         0x8000
+#define NVREG_IRQ_RECOVER_ERROR         0x8200
 #define NVREG_IRQMASK_THROUGHPUT        0x00df
 #define NVREG_IRQMASK_CPU               0x0060
 #define NVREG_IRQ_TX_ALL                (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
@@ -4073,13 +4073,15 @@ static void nv_do_nic_poll(unsigned long data)
 
         if (np->recover_error) {
                 np->recover_error = 0;
-                printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
+                printk(KERN_INFO "%s: MAC in recoverable error state\n", dev->name);
                 if (netif_running(dev)) {
                         netif_tx_lock_bh(dev);
                         netif_addr_lock(dev);
                         spin_lock(&np->lock);
                         /* stop engines */
                         nv_stop_rxtx(dev);
+                        if (np->driver_data & DEV_HAS_POWER_CNTRL)
+                                nv_mac_reset(dev);
                         nv_txrx_reset(dev);
                         /* drain rx queue */
                         nv_drain_rxtx(dev);
@@ -4097,6 +4099,11 @@ static void nv_do_nic_poll(unsigned long data)
                         pci_push(base);
                         writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
                         pci_push(base);
+                        /* clear interrupts */
+                        if (!(np->msi_flags & NV_MSI_X_ENABLED))
+                                writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+                        else
+                                writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
 
                         /* restart rx engine */
                         nv_start_rxtx(dev);