[SCSI] qla2xxx: Add Fibre Channel Event (FCE) tracing support.

FCE support enables the firmware to record FC extended link
services and basic link services frames which have been
transmitted and received by the ISP.  This allows for a limited
view of the FC traffic through the ISP without using a FC
analyzer.  This can be useful in situations where a physical
connection to the FC bus is not possible.

The driver exports this information in two ways -- first, via a
debugfs node exported for all supported ISPs under:

	<debugfs_mount_point>/qla2xxx/qla2xxx_<host_no>/fce

where a read of the 'fce' file will provide a snapshot of the
firmware's FCE buffer; and finally, the FCE buffer will be
extracted during a firmware-dump scenario.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index ef14bcde712..9337e138ed6 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -959,6 +959,13 @@ struct device_reg_24xx {
 #define TC_EFT_ENABLE           4
 #define TC_EFT_DISABLE          5
 
+#define TC_FCE_ENABLE           8
+#define TC_FCE_OPTIONS          0
+#define TC_FCE_DEFAULT_RX_SIZE  2112
+#define TC_FCE_DEFAULT_TX_SIZE  2112
+#define TC_FCE_DISABLE          9
+#define TC_FCE_DISABLE_TRACE    BIT_0
+
 /* MID Support ***************************************************************/
 
 #define MIN_MULTI_ID_FABRIC     64      /* Must be power-of-2. */