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authorsarveshwarb <sarveshwarb@serverengines.com>2009-08-05 13:05:24 -0700
committerDavid S. Miller <davem@davemloft.net>2009-08-05 13:05:24 -0700
commit14074eab8dcaa7f66d8f52612b2dcec51222bb5f (patch)
treeb385d8edcc1c6ce44ac7c58552cb0de7839ceb46 /drivers/net
parent0d6038ee76f2e06b79d0465807f67e86bf4025de (diff)
be2net: Patch to perform function reset at initialization
This patch is a bug fix to avoid system going into a bad state when driver is loaded in context of kdump kernel. The patch fixes the issue by performing a soft reset of pci function at probe time. Signed-off-by: sarveshwarb <sarveshwarb@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/benet/be_cmds.c21
-rw-r--r--drivers/net/benet/be_cmds.h2
-rw-r--r--drivers/net/benet/be_main.c4
3 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index de107732dcd..2547ee296a7 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -1019,3 +1019,24 @@ int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num)
spin_unlock(&adapter->mbox_lock);
return status;
}
+
+int be_cmd_reset_function(struct be_adapter *adapter)
+{
+ struct be_mcc_wrb *wrb = wrb_from_mbox(&adapter->mbox_mem);
+ struct be_cmd_req_hdr *req = embedded_payload(wrb);
+ int status;
+
+ spin_lock(&adapter->mbox_lock);
+
+ memset(wrb, 0, sizeof(*wrb));
+
+ be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
+
+ be_cmd_hdr_prepare(req, CMD_SUBSYSTEM_COMMON,
+ OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
+
+ status = be_mbox_notify(adapter);
+
+ spin_unlock(&adapter->mbox_lock);
+ return status;
+}
diff --git a/drivers/net/benet/be_cmds.h b/drivers/net/benet/be_cmds.h
index 5c5de3540d2..70618064ae1 100644
--- a/drivers/net/benet/be_cmds.h
+++ b/drivers/net/benet/be_cmds.h
@@ -135,6 +135,7 @@ struct be_mcc_mailbox {
#define OPCODE_COMMON_QUERY_FIRMWARE_CONFIG 58
#define OPCODE_COMMON_NTWK_PMAC_ADD 59
#define OPCODE_COMMON_NTWK_PMAC_DEL 60
+#define OPCODE_COMMON_FUNCTION_RESET 61
#define OPCODE_ETH_ACPI_CONFIG 2
#define OPCODE_ETH_PROMISCUOUS 3
@@ -744,4 +745,5 @@ extern int be_cmd_set_flow_control(struct be_adapter *adapter,
extern int be_cmd_get_flow_control(struct be_adapter *adapter,
u32 *tx_fc, u32 *rx_fc);
extern int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num);
+extern int be_cmd_reset_function(struct be_adapter *adapter);
extern void be_process_mcc(struct be_adapter *adapter);
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index ef82a52f393..d20235b1680 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1873,6 +1873,10 @@ static int __devinit be_probe(struct pci_dev *pdev,
if (status)
goto free_netdev;
+ status = be_cmd_reset_function(adapter);
+ if (status)
+ goto ctrl_clean;
+
status = be_stats_init(adapter);
if (status)
goto ctrl_clean;