Changeset 125 for trunk/src/os2ahci/ctxhook.c

Timestamp:

Oct 8, 2011, 10:28:48 PM (14 years ago)

Author:

cjm

Message:

Version 1.21

---

• Triggered by reports of performance loss with NCQ
• New command line flag "/F" to force using write buffers even when upstream I/O requested non-buffered I/O; the primary purpose of this flag is to debug the NCQ performance drop but the flag may or may not remain.

File:

• trunk/src/os2ahci/ctxhook.c (modified) (2 diffs)

trunk/src/os2ahci/ctxhook.c

@@ -127 +127 @@
 
         /* get "current command slot"; only valid if there are no NCQ cmds */
-        ccs = (int) ((readl(port_mmio + PORT_CMD) >> 8) & 0x0f);
+        ccs = (int) ((readl(port_mmio + PORT_CMD) >> 8) & 0x1f);
         ddprintf(" PORT_CMD      = 0x%x\n", ccs);
 
@@ -145 +145 @@
               if (aws->cmd_slot == ccs) {
                 /* this is the non-NCQ command that failed */
+                ddprintf("failing IORB: %Fp\n", iorb);
                 problem_iorb = iorb;
               }