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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>
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@ -1019,3 +1019,24 @@ int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num)
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spin_unlock(&adapter->mbox_lock);
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return status;
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}
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int be_cmd_reset_function(struct be_adapter *adapter)
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{
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struct be_mcc_wrb *wrb = wrb_from_mbox(&adapter->mbox_mem);
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struct be_cmd_req_hdr *req = embedded_payload(wrb);
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int status;
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spin_lock(&adapter->mbox_lock);
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memset(wrb, 0, sizeof(*wrb));
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be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
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be_cmd_hdr_prepare(req, CMD_SUBSYSTEM_COMMON,
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OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
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status = be_mbox_notify(adapter);
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spin_unlock(&adapter->mbox_lock);
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return status;
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}
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@ -135,6 +135,7 @@ struct be_mcc_mailbox {
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#define OPCODE_COMMON_QUERY_FIRMWARE_CONFIG 58
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#define OPCODE_COMMON_NTWK_PMAC_ADD 59
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#define OPCODE_COMMON_NTWK_PMAC_DEL 60
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#define OPCODE_COMMON_FUNCTION_RESET 61
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#define OPCODE_ETH_ACPI_CONFIG 2
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#define OPCODE_ETH_PROMISCUOUS 3
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@ -744,4 +745,5 @@ extern int be_cmd_set_flow_control(struct be_adapter *adapter,
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extern int be_cmd_get_flow_control(struct be_adapter *adapter,
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u32 *tx_fc, u32 *rx_fc);
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extern int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num);
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extern int be_cmd_reset_function(struct be_adapter *adapter);
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extern void be_process_mcc(struct be_adapter *adapter);
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@ -1873,6 +1873,10 @@ static int __devinit be_probe(struct pci_dev *pdev,
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if (status)
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goto free_netdev;
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status = be_cmd_reset_function(adapter);
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if (status)
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goto ctrl_clean;
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status = be_stats_init(adapter);
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if (status)
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goto ctrl_clean;
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