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path: root/drivers/scsi/cpqfcTStrigger.c
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Diffstat (limited to 'drivers/scsi/cpqfcTStrigger.c')
-rw-r--r--drivers/scsi/cpqfcTStrigger.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/scsi/cpqfcTStrigger.c b/drivers/scsi/cpqfcTStrigger.c
new file mode 100644
index 00000000000..dbb7e65159a
--- /dev/null
+++ b/drivers/scsi/cpqfcTStrigger.c
@@ -0,0 +1,33 @@
+// Routine to trigger Finisar GTA analyzer. Runs of GPIO2
+// NOTE: DEBUG ONLY! Could interfere with FCMNGR/Miniport operation
+// since it writes directly to the Tachyon board. This function
+// developed for Compaq HBA Tachyon TS v1.2 (Rev X5 PCB)
+
+#include "cpqfcTStrigger.h"
+#if TRIGGERABLE_HBA
+
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+void TriggerHBA( void* IOBaseUpper, int Print)
+{
+ __u32 long value;
+
+ // get initial value in hopes of not modifying any other GPIO line
+ IOBaseUpper += 0x188; // TachTL/TS Control reg
+
+ value = readl( IOBaseUpper);
+ // set HIGH to trigger external analyzer (tested on Dolche Finisar 1Gb GTA)
+ // The Finisar anaylzer triggers on low-to-high TTL transition
+ value |= 0x01; // set bit 0
+
+ writel( value, IOBaseUpper);
+
+ if( Print)
+ printk( " -GPIO0 set- ");
+}
+
+#endif