From 65ab999da808f72e3fe82be8f7d35050d3126005 Mon Sep 17 00:00:00 2001 From: Jitendra Kalsaria Date: Sat, 9 Feb 2013 09:29:55 +0000 Subject: [PATCH] qlcnic: fix mailbox response handling o Do not read mailbox registers on timeout o Add a helper function to handle mailbox response Signed-off-by: Jitendra Kalsaria Signed-off-by: David S. Miller --- .../ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c | 66 +++++++++++-------- 1 file changed, 40 insertions(+), 26 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c index 51b4340deffa..f7b39d1067fb 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c @@ -664,6 +664,21 @@ static void qlcnic_dump_mbx(struct qlcnic_adapter *adapter, pr_info("\n"); } +/* Mailbox response for mac rcode */ +static u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *adapter) +{ + u32 fw_data; + u8 mac_cmd_rcode; + + fw_data = readl(QLCNIC_MBX_FW(adapter->ahw, 2)); + mac_cmd_rcode = (u8)fw_data; + if (mac_cmd_rcode == QLC_83XX_NO_NIC_RESOURCE || + mac_cmd_rcode == QLC_83XX_MAC_PRESENT || + mac_cmd_rcode == QLC_83XX_MAC_ABSENT) + return QLCNIC_RCODE_SUCCESS; + return 1; +} + static u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *adapter) { u32 data; @@ -686,7 +701,7 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter, { int i; u16 opcode; - u8 mbx_err_code, mac_cmd_rcode; + u8 mbx_err_code; u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd; struct qlcnic_hardware_context *ahw = adapter->ahw; @@ -722,45 +737,44 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter, QLCWRX(ahw, QLCNIC_HOST_MBX_CTRL, QLCNIC_SET_OWNER); poll: rsp = qlcnic_83xx_mbx_poll(adapter); - /* Get the FW response data */ - fw_data = readl(QLCNIC_MBX_FW(ahw, 0)); - mbx_err_code = QLCNIC_MBX_STATUS(fw_data); - rsp_num = QLCNIC_MBX_NUM_REGS(fw_data); - opcode = QLCNIC_MBX_RSP(fw_data); - if (rsp != QLCNIC_RCODE_TIMEOUT) { + /* Get the FW response data */ + fw_data = readl(QLCNIC_MBX_FW(ahw, 0)); if (fw_data & QLCNIC_MBX_ASYNC_EVENT) { qlcnic_83xx_process_aen(adapter); mbx_val = QLCRDX(ahw, QLCNIC_HOST_MBX_CTRL); if (mbx_val) goto poll; - } else if ((mbx_err_code == QLCNIC_MBX_RSP_OK) || - (mbx_err_code == QLCNIC_MBX_PORT_RSP_OK)) { - qlcnic_83xx_get_mbx_data(adapter, cmd); + } + mbx_err_code = QLCNIC_MBX_STATUS(fw_data); + rsp_num = QLCNIC_MBX_NUM_REGS(fw_data); + opcode = QLCNIC_MBX_RSP(fw_data); + qlcnic_83xx_get_mbx_data(adapter, cmd); + + switch (mbx_err_code) { + case QLCNIC_MBX_RSP_OK: + case QLCNIC_MBX_PORT_RSP_OK: rsp = QLCNIC_RCODE_SUCCESS; - } else { - qlcnic_83xx_get_mbx_data(adapter, cmd); + break; + default: if (opcode == QLCNIC_CMD_CONFIG_MAC_VLAN) { - fw_data = readl(QLCNIC_MBX_FW(ahw, 2)); - mac_cmd_rcode = (u8)fw_data; - if (mac_cmd_rcode == QLC_83XX_NO_NIC_RESOURCE || - mac_cmd_rcode == QLC_83XX_MAC_PRESENT || - mac_cmd_rcode == QLC_83XX_MAC_ABSENT) { - rsp = QLCNIC_RCODE_SUCCESS; + rsp = qlcnic_83xx_mac_rcode(adapter); + if (!rsp) goto out; - } } - dev_info(&adapter->pdev->dev, - "MBX command 0x%x failed with err:0x%x\n", - opcode, mbx_err_code); + dev_err(&adapter->pdev->dev, + "MBX command 0x%x failed with err:0x%x\n", + opcode, mbx_err_code); rsp = mbx_err_code; qlcnic_dump_mbx(adapter, cmd); + break; } - } else { - dev_info(&adapter->pdev->dev, - "MBX command 0x%x timed out\n", opcode); - qlcnic_dump_mbx(adapter, cmd); + goto out; } + + dev_err(&adapter->pdev->dev, "MBX command 0x%x timed out\n", + QLCNIC_MBX_RSP(mbx_cmd)); + rsp = QLCNIC_RCODE_TIMEOUT; out: /* clear fw mbx control register */ QLCWRX(ahw, QLCNIC_FW_MBX_CTRL, QLCNIC_CLR_OWNER); -- 2.20.1