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Diffstat (limited to 'general/PLX9x5x/sys/Public.h')
-rw-r--r--general/PLX9x5x/sys/Public.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/general/PLX9x5x/sys/Public.h b/general/PLX9x5x/sys/Public.h
index 16c425ae..401e5cb3 100644
--- a/general/PLX9x5x/sys/Public.h
+++ b/general/PLX9x5x/sys/Public.h
@@ -32,4 +32,10 @@ Environment:
DEFINE_GUID (GUID_PLX_INTERFACE,
0x29d2a384, 0x2e47, 0x49b5, 0xae, 0xbf, 0x69, 0x62, 0xc2, 0x2b, 0xd7, 0xc2);
+//
+// This IOCTL toggles the driver's DMA Single Transfer Requirement
+// on and off each time it is called.
+//
+#define IOCTL_PLX9X5X_TOGGLE_SINGLE_TRANSFER \
+ CTL_CODE(FILE_DEVICE_UNKNOWN, 0x0, METHOD_BUFFERED, FILE_ANY_ACCESS)