1 // Routine to trigger Finisar GTA analyzer. Runs of GPIO2
2 // NOTE: DEBUG ONLY! Could interfere with FCMNGR/Miniport operation
3 // since it writes directly to the Tachyon board. This function
4 // developed for Compaq HBA Tachyon TS v1.2 (Rev X5 PCB)
5
6 #include <linux/kernel.h>
7 #include <linux/ioport.h>
8 #include <linux/types.h>
9 #include <linux/pci.h>
10 #include <asm/io.h>
11
12
13 void TriggerHBA( void* IOBaseUpper, int Print)
14 {
15 __u32 long value;
16
17 // get initial value in hopes of not modifying any other GPIO line
18 IOBaseUpper += 0x188; // TachTL/TS Control reg
19
20 value = readl( IOBaseUpper);
21 // set HIGH to trigger external analyzer (tested on Dolche Finisar 1Gb GTA)
22 // The Finisar anaylzer triggers on low-to-high TTL transition
23 value |= 0x01; // set bit 0
24
25 writel( value, IOBaseUpper);
26
27 if( Print)
28 printk( " -GPIO0 set- ");
29 }
30
31
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