[PATCH 2/3] ahci-remap.h: add ahci remapping definitions

[hch@lst.de (Christoph Hellwig)]

From: Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Dan Williams <dan.j.williams at intel.com>
[hch: split into a separate header and commit]
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 include/linux/ahci-remap.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 include/linux/ahci-remap.h

diff --git a/include/linux/ahci-remap.h b/include/linux/ahci-remap.h
new file mode 100644
index 0000000..883d366
--- /dev/null
+++ b/include/linux/ahci-remap.h
@@ -0,0 +1,29 @@
+#ifndef _LINUX_AHCI_REMAP_H
+#define _LINUX_AHCI_REMAP_H
+
+#include <linux/sizes.h>
+
+#define AHCI_VSCAP		0xa4
+#define AHCI_REMAP_CAP		0x800
+#define AHCI_VSCAP		0xa4
+
+/* 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 */
-- 
2.1.4