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-rw-r--r--include/ahci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/ahci.h b/include/ahci.h
index 0c6bbbdc56c..87698538502 100644
--- a/include/ahci.h
+++ b/include/ahci.h
@@ -48,6 +48,7 @@
#define HOST_IRQ_STAT 0x08 /* interrupt status */
#define HOST_PORTS_IMPL 0x0c /* bitmap of implemented ports */
#define HOST_VERSION 0x10 /* AHCI spec. version compliancy */
+#define HOST_CAP2 0x24 /* host capabilities, extended */
/* HOST_CTL bits */
#define HOST_RESET (1 << 0) /* reset controller; self-clear */