diff --git a/libc/kernel/common/linux/mca.h b/libc/kernel/common/linux/mca.h
new file mode 100644
index 0000000..dfbfc2a
--- /dev/null
+++ b/libc/kernel/common/linux/mca.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_MCA_H
+#define _LINUX_MCA_H
+
+#include <linux/device.h>
+
+#define MCA_bus 0
+
+typedef int (*MCA_ProcFn)(char* buf, int slot, void* dev);
+
+enum MCA_AdapterStatus {
+ MCA_ADAPTER_NORMAL = 0,
+ MCA_ADAPTER_NONE = 1,
+ MCA_ADAPTER_DISABLED = 2,
+ MCA_ADAPTER_ERROR = 3
+};
+
+struct mca_device {
+ u64 dma_mask;
+ int pos_id;
+ int slot;
+
+ int index;
+
+ int driver_loaded;
+
+ unsigned char pos[8];
+
+ short pos_register;
+
+ enum MCA_AdapterStatus status;
+ struct device dev;
+ char name[32];
+};
+#define to_mca_device(mdev) container_of(mdev, struct mca_device, dev)
+
+struct mca_bus_accessor_functions {
+ unsigned char (*mca_read_pos)(struct mca_device *, int reg);
+ void (*mca_write_pos)(struct mca_device *, int reg,
+ unsigned char byte);
+ int (*mca_transform_irq)(struct mca_device *, int irq);
+ int (*mca_transform_ioport)(struct mca_device *,
+ int region);
+ void * (*mca_transform_memory)(struct mca_device *,
+ void *memory);
+};
+
+struct mca_bus {
+ u64 default_dma_mask;
+ int number;
+ struct mca_bus_accessor_functions f;
+ struct device dev;
+ char name[32];
+};
+#define to_mca_bus(mdev) container_of(mdev, struct mca_bus, dev)
+
+struct mca_driver {
+ const short *id_table;
+ void *driver_data;
+ struct device_driver driver;
+};
+#define to_mca_driver(mdriver) container_of(mdriver, struct mca_driver, driver)
+
+#endif