qlcnic: Fix mailbox response handling.

o Fix mailbox response poll time to maximum 5 seconds which
  includes mailbox response time as well as time required for
  processing AEN if any.
o Driver need to read firmware control mailbox register instead
  of host control mailbox register.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 10 insertions, 15 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index 7b5cb610e7b6..b4ff1e35a11d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -696,15 +696,14 @@ u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *adapter)
         return 1;
 }
 
-u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *adapter)
+u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *adapter, u32 *wait_time)
 {
         u32 data;
-        unsigned long wait_time = 0;
         struct qlcnic_hardware_context *ahw = adapter->ahw;
         /* wait for mailbox completion */
         do {
                 data = QLCRDX(ahw, QLCNIC_FW_MBX_CTRL);
-                if (++wait_time > QLCNIC_MBX_TIMEOUT) {
+                if (++(*wait_time) > QLCNIC_MBX_TIMEOUT) {
                         data = QLCNIC_RCODE_TIMEOUT;
                         break;
                 }
@@ -720,8 +719,8 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter,
         u16 opcode;
         u8 mbx_err_code;
         unsigned long flags;
-        u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd;
         struct qlcnic_hardware_context *ahw = adapter->ahw;
+        u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd, wait_time = 0;
 
         opcode = LSW(cmd->req.arg[0]);
         if (!test_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status)) {
@@ -754,15 +753,13 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter,
         /* Signal FW about the impending command */
         QLCWRX(ahw, QLCNIC_HOST_MBX_CTRL, QLCNIC_SET_OWNER);
 poll:
-        rsp = qlcnic_83xx_mbx_poll(adapter);
+        rsp = qlcnic_83xx_mbx_poll(adapter, &wait_time);
         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;
+                        goto poll;
                 }
                 mbx_err_code = QLCNIC_MBX_STATUS(fw_data);
                 rsp_num = QLCNIC_MBX_NUM_REGS(fw_data);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index faf5553681e1..f5db67fc9f55 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -620,7 +620,7 @@ int qlcnic_83xx_flash_test(struct qlcnic_adapter *);
 int qlcnic_83xx_enable_flash_write(struct qlcnic_adapter *);
 int qlcnic_83xx_disable_flash_write(struct qlcnic_adapter *);
 u32 qlcnic_83xx_mac_rcode(struct qlcnic_adapter *);
-u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *);
+u32 qlcnic_83xx_mbx_poll(struct qlcnic_adapter *, u32 *);
 void qlcnic_83xx_enable_mbx_poll(struct qlcnic_adapter *);
 void qlcnic_83xx_disable_mbx_poll(struct qlcnic_adapter *);
 #endif
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h
index 95b1b5732838..b6818f4356b9 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h
@@ -134,7 +134,7 @@ struct qlcnic_mailbox_metadata {
 
 #define QLCNIC_SET_OWNER        1
 #define QLCNIC_CLR_OWNER        0
-#define QLCNIC_MBX_TIMEOUT      10000
+#define QLCNIC_MBX_TIMEOUT      5000
 
 #define QLCNIC_MBX_RSP_OK       1
 #define QLCNIC_MBX_PORT_RSP_OK  0x1a
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
index 44d547d78b84..3869c3864deb 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
@@ -280,9 +280,9 @@ void qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
 static int qlcnic_sriov_post_bc_msg(struct qlcnic_adapter *adapter, u32 *hdr,
                                     u32 *pay, u8 pci_func, u8 size)
 {
+        u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd, val, wait_time = 0;
         struct qlcnic_hardware_context *ahw = adapter->ahw;
         unsigned long flags;
-        u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd, val;
         u16 opcode;
         u8 mbx_err_code;
         int i, j;
@@ -330,15 +330,13 @@ static int qlcnic_sriov_post_bc_msg(struct qlcnic_adapter *adapter, u32 *hdr,
          * assume something is wrong.
          */
 poll:
-        rsp = qlcnic_83xx_mbx_poll(adapter);
+        rsp = qlcnic_83xx_mbx_poll(adapter, &wait_time);
         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;
+                        goto poll;
                 }
                 mbx_err_code = QLCNIC_MBX_STATUS(fw_data);
                 rsp_num = QLCNIC_MBX_NUM_REGS(fw_data);