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Diffstat (limited to 'include/uapi/linux/aspeed-lpc-ctrl.h')
-rw-r--r--include/uapi/linux/aspeed-lpc-ctrl.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/include/uapi/linux/aspeed-lpc-ctrl.h b/include/uapi/linux/aspeed-lpc-ctrl.h
new file mode 100644
index 000000000000..c328c976c684
--- /dev/null
+++ b/include/uapi/linux/aspeed-lpc-ctrl.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _UAPI_LINUX_ASPEED_LPC_CTRL_H
+#define _UAPI_LINUX_ASPEED_LPC_CTRL_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/* Window types */
+#define ASPEED_LPC_CTRL_WINDOW_FLASH 1
+#define ASPEED_LPC_CTRL_WINDOW_MEMORY 2
+
+/*
+ * This driver provides a window for the host to access a BMC resource
+ * across the BMC <-> Host LPC bus.
+ *
+ * window_type: The BMC resource that the host will access through the
+ * window. BMC flash and BMC RAM.
+ *
+ * window_id: For each window type there may be multiple windows,
+ * these are referenced by ID.
+ *
+ * flags: Reserved for future use, this field is expected to be
+ * zeroed.
+ *
+ * addr: Address on the host LPC bus that the specified window should
+ * be mapped. This address must be power of two aligned.
+ *
+ * offset: Offset into the BMC window that should be mapped to the
+ * host (at addr). This must be a multiple of size.
+ *
+ * size: The size of the mapping. The smallest possible size is 64K.
+ * This must be power of two aligned.
+ *
+ */
+
+struct aspeed_lpc_ctrl_mapping {
+ __u8 window_type;
+ __u8 window_id;
+ __u16 flags;
+ __u32 addr;
+ __u32 offset;
+ __u32 size;
+};
+
+#define __ASPEED_LPC_CTRL_IOCTL_MAGIC 0xb2
+
+#define ASPEED_LPC_CTRL_IOCTL_GET_SIZE _IOWR(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
+ 0x00, struct aspeed_lpc_ctrl_mapping)
+
+#define ASPEED_LPC_CTRL_IOCTL_MAP _IOW(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
+ 0x01, struct aspeed_lpc_ctrl_mapping)
+
+#endif /* _UAPI_LINUX_ASPEED_LPC_CTRL_H */