From: Quinn Tran <qutran@xxxxxxxxxxx>
For single port 28XX adapter, the second core can still runs in
the back ground. The flash semaphore can be held by the non-active
core. This patch tell MPI FW to check for this case and clear the
semaphore from the non-active core.
Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx>
Signed-off-by: Himanshu Madhani <hmadhani@xxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_mbx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 09531b9ab517..ca5eb518927b 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -667,10 +667,14 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
struct qla_hw_data *ha = vha->hw;
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
+ u8 semaphore = 0;
+#define EXE_FW_FORCE_SEMAPHORE BIT_7
+ u8 retry = 3;
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1025,
"Entered %s.\n", __func__);
+again:
mcp->mb[0] = MBC_EXECUTE_FIRMWARE;
mcp->out_mb = MBX_0;
mcp->in_mb = MBX_0;
@@ -712,6 +716,9 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
if (ha->flags.exchoffld_enabled)
mcp->mb[4] |= ENABLE_EXCHANGE_OFFLD;
+ if (semaphore)
+ mcp->mb[11] |= EXE_FW_FORCE_SEMAPHORE;
+
mcp->out_mb |= MBX_4 | MBX_3 | MBX_2 | MBX_1 | MBX_11;
mcp->in_mb |= MBX_3 | MBX_2 | MBX_1;
} else {
@@ -728,6 +735,15 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
rval = qla2x00_mailbox_command(vha, mcp);
if (rval != QLA_SUCCESS) {
+ if (IS_QLA28XX(ha) && rval == QLA_COMMAND_ERROR &&
+ mcp->mb[1] == 0x27 && retry) {
+ semaphore = 1;
+ retry--;
+ ql_dbg(ql_dbg_async, vha, 0x1026,
+ "Exe FW: force semaphore.\n");
+ goto again;
+ }
+
ql_dbg(ql_dbg_mbx, vha, 0x1026,
"Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
return rval;
--
2.12.0
