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-rw-r--r--include/linux/ahci-remap.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/ahci-remap.h b/include/linux/ahci-remap.h
new file mode 100644
index 000000000000..62be3a40239d
--- /dev/null
+++ b/include/linux/ahci-remap.h
@@ -0,0 +1,28 @@
+#ifndef _LINUX_AHCI_REMAP_H
+#define _LINUX_AHCI_REMAP_H
+
+#include <linux/sizes.h>
+
+#define AHCI_VSCAP 0xa4
+#define AHCI_REMAP_CAP 0x800
+
+/* device class code */
+#define AHCI_REMAP_N_DCC 0x880
+
+/* remap-device base relative to ahci-bar */
+#define AHCI_REMAP_N_OFFSET SZ_16K
+#define AHCI_REMAP_N_SIZE SZ_16K
+
+#define AHCI_MAX_REMAP 3
+
+static inline unsigned int ahci_remap_dcc(int i)
+{
+ return AHCI_REMAP_N_DCC + i * 0x80;
+}
+
+static inline unsigned int ahci_remap_base(int i)
+{
+ return AHCI_REMAP_N_OFFSET + i * AHCI_REMAP_N_SIZE;
+}
+
+#endif /* _LINUX_AHCI_REMAP_H */