xnu-1486.2.11.tar.gz

[apple/xnu.git] / bsd / sys / disk.h

diff --git a/bsd/sys/disk.h b/bsd/sys/disk.h
index 3482531079655b9d455928ce0c75ed6b4aee3bd5..0a3da6952ba3d75fa56a4636818edddc0120beab 100644 (file)
--- a/bsd/sys/disk.h
+++ b/bsd/sys/disk.h
@@ -67,6 +67,7 @@
  * DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT get maximum segment width in bits
  *
  * DKIOCGETPHYSICALBLOCKSIZE             get device's block size
+ * DKIOCGETCOMMANDPOOLSIZE               get device's queue depth
  */
 
 typedef struct
@@ -132,6 +133,7 @@ typedef struct
 #define DKIOCGETMAXSEGMENTADDRESSABLEBITCOUNT _IOR('d', 75, uint64_t)
 
 #define DKIOCGETPHYSICALBLOCKSIZE             _IOR('d', 77, uint32_t)
+#define DKIOCGETCOMMANDPOOLSIZE               _IOR('d', 78, uint32_t)
 
 #ifdef KERNEL
 #define DK_FEATURE_DISCARD                    0x00000010