MCA: delete all remaining traces of microchannel bus support.

Hardware with MCA bus is limited to 386 and 486 class machines
that are now 20+ years old and typically with less than 32MB
of memory.  A quick search on the internet, and you see that
even the MCA hobbyist/enthusiast community has lost interest
in the early 2000 era and never really even moved ahead from
the 2.4 kernels to the 2.6 series.

This deletes anything remaining related to CONFIG_MCA from core
kernel code and from the x86 architecture.  There is no point in
carrying this any further into the future.

One complication to watch for is inadvertently scooping up
stuff relating to machine check, since there is overlap in
the TLA name space (e.g. arch/x86/boot/mca.c).

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: x86@kernel.org
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 0 insertions, 148 deletions

diff --git a/include/linux/mca.h b/include/linux/mca.h
deleted file mode 100644
index 37972704617f..000000000000
--- a/include/linux/mca.h
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Header for Microchannel Architecture Bus
- * Written by Martin Kolinek, February 1996
- */
-
-#ifndef _LINUX_MCA_H
-#define _LINUX_MCA_H
-
-#include <linux/device.h>
-
-#ifdef CONFIG_MCA
-#include <asm/mca.h>
-
-extern int MCA_bus;
-#else
-#define MCA_bus 0
-#endif
-
-/* This sets up an information callback for /proc/mca/slot?.  The
- * function is called with the buffer, slot, and device pointer (or
- * some equally informative context information, or nothing, if you
- * prefer), and is expected to put useful information into the
- * buffer.  The adapter name, id, and POS registers get printed
- * before this is called though, so don't do it again.
- *
- * This should be called with a NULL procfn when a module
- * unregisters, thus preventing kernel crashes and other such
- * nastiness.
- */
-typedef int (*MCA_ProcFn)(char* buf, int slot, void* dev);
-
-/* Should only be called by the NMI interrupt handler, this will do some
- * fancy stuff to figure out what might have generated a NMI.
- */
-extern void mca_handle_nmi(void);
-
-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;
-
-	/* index into id_table, set by the bus match routine */
-	int			index;
-
-	/* is there a driver installed? 0 - No, 1 - Yes */
-	int			driver_loaded;
-	/* POS registers */
-	unsigned char		pos[8];
-	/* if a pseudo adapter of the motherboard, this is the motherboard
-	 * register value to use for setup cycles */
-	short			pos_register;
-	
-	enum MCA_AdapterStatus	status;
-#ifdef CONFIG_MCA_PROC_FS
-	/* name of the proc/mca file */
-	char			procname[8];
-	/* /proc info callback */
-	MCA_ProcFn		procfn;
-	/* device/context info for proc callback */
-	void			*proc_dev;
-#endif
-	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;
-	int			integrated_id;
-	struct device_driver	driver;
-};
-#define to_mca_driver(mdriver) container_of(mdriver, struct mca_driver, driver)
-
-/* Ongoing supported API functions */
-extern struct mca_device *mca_find_device_by_slot(int slot);
-extern int mca_system_init(void);
-extern struct mca_bus *mca_attach_bus(int);
-
-extern unsigned char mca_device_read_stored_pos(struct mca_device *mca_dev,
-						int reg);
-extern unsigned char mca_device_read_pos(struct mca_device *mca_dev, int reg);
-extern void mca_device_write_pos(struct mca_device *mca_dev, int reg,
-				 unsigned char byte);
-extern int mca_device_transform_irq(struct mca_device *mca_dev, int irq);
-extern int mca_device_transform_ioport(struct mca_device *mca_dev, int port);
-extern void *mca_device_transform_memory(struct mca_device *mca_dev,
-					 void *mem);
-extern int mca_device_claimed(struct mca_device *mca_dev);
-extern void mca_device_set_claim(struct mca_device *mca_dev, int val);
-extern void mca_device_set_name(struct mca_device *mca_dev, const char *name);
-static inline char *mca_device_get_name(struct mca_device *mca_dev)
-{
-	return mca_dev ? mca_dev->name : NULL;
-}
-
-extern enum MCA_AdapterStatus mca_device_status(struct mca_device *mca_dev);
-
-extern struct bus_type mca_bus_type;
-
-extern int mca_register_driver(struct mca_driver *drv);
-extern int mca_register_driver_integrated(struct mca_driver *, int);
-extern void mca_unregister_driver(struct mca_driver *drv);
-
-/* WARNING: only called by the boot time device setup */
-extern int mca_register_device(int bus, struct mca_device *mca_dev);
-
-#ifdef CONFIG_MCA_PROC_FS
-extern void mca_do_proc_init(void);
-extern void mca_set_adapter_procfn(int slot, MCA_ProcFn, void* dev);
-#else
-static inline void mca_do_proc_init(void)
-{
-}
-
-static inline void mca_set_adapter_procfn(int slot, MCA_ProcFn fn, void* dev)
-{
-}
-#endif
-
-#endif /* _LINUX_MCA_H */