netxen: async link event handling

Add support for asynchronous events from firmware,
received over one of the rx rings.

Add support for event based phy interrupts, enhanced links
status reporting from firmware.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index 8416962cc9ac..33444a20e4f7 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -731,6 +731,28 @@ int netxen_config_rss(struct netxen_adapter *adapter, int enable)
         return rv;
 }
 
+int netxen_linkevent_request(struct netxen_adapter *adapter, int enable)
+{
+        nx_nic_req_t req;
+        u64 word;
+        int rv;
+
+        memset(&req, 0, sizeof(nx_nic_req_t));
+        req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
+
+        word = NX_NIC_H2C_OPCODE_GET_LINKEVENT | ((u64)adapter->portnum << 16);
+        req.req_hdr = cpu_to_le64(word);
+        req.words[0] = cpu_to_le64(enable);
+
+        rv = netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
+        if (rv != 0) {
+                printk(KERN_ERR "%s: could not configure link notification\n",
+                                adapter->netdev->name);
+        }
+
+        return rv;
+}
+
 /*
  * netxen_nic_change_mtu - Change the Maximum Transfer Unit
  * @returns 0 on success, negative on failure