netxen: fix legacy interrupts
Fix legacy interrupt mode for NX3031 chips, read pci interrupt state
in hardware to guard against spurious interrupt.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/netxen/netxen_nic_hdr.h b/drivers/net/netxen/netxen_nic_hdr.h
index ccf6d70..e8e8d73 100644
--- a/drivers/net/netxen/netxen_nic_hdr.h
+++ b/drivers/net/netxen/netxen_nic_hdr.h
@@ -843,9 +843,11 @@
#define PCIE_SETUP_FUNCTION (0x12040)
#define PCIE_SETUP_FUNCTION2 (0x12048)
+#define PCIE_MISCCFG_RC (0x1206c)
#define PCIE_TGT_SPLIT_CHICKEN (0x12080)
#define PCIE_CHICKEN3 (0x120c8)
+#define ISR_INT_STATE_REG (NETXEN_PCIX_PS_REG(PCIE_MISCCFG_RC))
#define PCIE_MAX_MASTER_SPLIT (0x14048)
#define NETXEN_PORT_MODE_NONE 0
@@ -861,6 +863,7 @@
#define NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL (0x14)
#define ISR_MSI_INT_TRIGGER(FUNC) (NETXEN_PCIX_PS_REG(PCIX_MSI_F(FUNC)))
+#define ISR_LEGACY_INT_TRIGGERED(VAL) (((VAL) & 0x300) == 0x200)
/*
* PCI Interrupt Vector Values.