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netxen: async link event handling

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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>
This commit is contained in:
Dhananjay Phadke
2009-04-07 22:50:42 +00:00
committed by David S. Miller
parent 56a007871a
commit 3bf26ce3f4
6 changed files with 265 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

102
drivers/net/netxen/netxen_nic_init.c
View File

@@ -795,9 +795,81 @@ int netxen_init_firmware(struct netxen_adapter *adapter)
adapter->pci_write_normalize(adapter,
CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
adapter->capabilities = netxen_nic_reg_read(adapter,
CRB_FW_CAPABILITIES_1);
}
return err;
}
static void
netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
{
u32 cable_OUI;
u16 cable_len;
u16 link_speed;
u8 link_status, module, duplex, autoneg;
struct net_device *netdev = adapter->netdev;
adapter->has_link_events = 1;
cable_OUI = msg->body[1] & 0xffffffff;
cable_len = (msg->body[1] >> 32) & 0xffff;
link_speed = (msg->body[1] >> 48) & 0xffff;
link_status = msg->body[2] & 0xff;
duplex = (msg->body[2] >> 16) & 0xff;
autoneg = (msg->body[2] >> 24) & 0xff;
module = (msg->body[2] >> 8) & 0xff;
if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
netdev->name, cable_OUI, cable_len);
} else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
printk(KERN_INFO "%s: unsupported cable length %d\n",
netdev->name, cable_len);
}
netxen_advert_link_change(adapter, link_status);
/* update link parameters */
if (duplex == LINKEVENT_FULL_DUPLEX)
adapter->link_duplex = DUPLEX_FULL;
else
adapter->link_duplex = DUPLEX_HALF;
adapter->module_type = module;
adapter->link_autoneg = autoneg;
adapter->link_speed = link_speed;
}
static void
netxen_handle_fw_message(int desc_cnt, int index,
struct nx_host_sds_ring *sds_ring)
{
nx_fw_msg_t msg;
struct status_desc *desc;
int i = 0, opcode;
while (desc_cnt > 0 && i < 8) {
desc = &sds_ring->desc_head[index];
msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
index = get_next_index(index, sds_ring->num_desc);
desc_cnt--;
}
opcode = netxen_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
netxen_handle_linkevent(sds_ring->adapter, &msg);
break;
default:
break;
}
}
static int
netxen_alloc_rx_skb(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring,
@@ -916,21 +988,35 @@ netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
int count = 0;
u64 sts_data;
int opcode, ring, index, length, cksum, pkt_offset;
int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data = le64_to_cpu(desc->status_desc_data);
sts_data = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data & STATUS_OWNER_HOST))
break;
desc_cnt = netxen_get_sts_desc_cnt(sts_data);
ring = netxen_get_sts_type(sts_data);
if (ring > RCV_RING_JUMBO)
continue;
goto skip;
opcode = netxen_get_sts_opcode(sts_data);
switch (opcode) {
case NETXEN_NIC_RXPKT_DESC:
case NETXEN_OLD_RXPKT_DESC:
break;
case NETXEN_NIC_RESPONSE_DESC:
netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
index = netxen_get_sts_refhandle(sts_data);
length = netxen_get_sts_totallength(sts_data);
cksum = netxen_get_sts_status(sts_data);
@@ -942,9 +1028,13 @@ netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
if (rxbuf)
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
desc->status_desc_data = cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
skip:
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] =
cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
count++;
}