WebSVN - shark - Blame - Rev 422 - /shark/trunk/drivers/linuxc26/include/linux/mca.h

Rev	Author	Line No.	Line
422	giacomo	1	/*
		2	* Header for Microchannel Architecture Bus
		3	* Written by Martin Kolinek, February 1996
		4	*/
		5
		6	#ifndef _LINUX_MCA_H
		7	#define _LINUX_MCA_H
		8
		9	/* FIXME: This shouldn't happen, but we need everything that previously
		10	* included mca.h to compile. Take it out later when the MCA #includes
		11	* are sorted out */
		12	#include <linux/device.h>
		13
		14	/* get the platform specific defines */
		15	#include <asm/mca.h>
		16
		17	/* The detection of MCA bus is done in the real mode (using BIOS).
		18	* The information is exported to the protected code, where this
		19	* variable is set to one in case MCA bus was detected.
		20	*/
		21	#ifndef MCA_bus__is_a_macro
		22	extern int MCA_bus;
		23	#endif
		24
		25	/* This sets up an information callback for /proc/mca/slot?. The
		26	* function is called with the buffer, slot, and device pointer (or
		27	* some equally informative context information, or nothing, if you
		28	* prefer), and is expected to put useful information into the
		29	* buffer. The adapter name, id, and POS registers get printed
		30	* before this is called though, so don't do it again.
		31	*
		32	* This should be called with a NULL procfn when a module
		33	* unregisters, thus preventing kernel crashes and other such
		34	* nastiness.
		35	*/
		36	typedef int (MCA_ProcFn)(char buf, int slot, void* dev);
		37
		38	/* Should only be called by the NMI interrupt handler, this will do some
		39	* fancy stuff to figure out what might have generated a NMI.
		40	*/
		41	extern void mca_handle_nmi(void);
		42
		43	enum MCA_AdapterStatus {
		44	MCA_ADAPTER_NORMAL = 0,
		45	MCA_ADAPTER_NONE = 1,
		46	MCA_ADAPTER_DISABLED = 2,
		47	MCA_ADAPTER_ERROR = 3
		48	};
		49
		50	struct mca_device {
		51	u64 dma_mask;
		52	int pos_id;
		53	int slot;
		54
		55	/* index into id_table, set by the bus match routine */
		56	int index;
		57
		58	/* is there a driver installed? 0 - No, 1 - Yes */
		59	int driver_loaded;
		60	/* POS registers */
		61	unsigned char pos[8];
		62	/* if a pseudo adapter of the motherboard, this is the motherboard
		63	* register value to use for setup cycles */
		64	short pos_register;
		65
		66	enum MCA_AdapterStatus status;
		67	#ifdef CONFIG_MCA_PROC_FS
		68	/* name of the proc/mca file */
		69	char procname[8];
		70	/* /proc info callback */
		71	MCA_ProcFn procfn;
		72	/* device/context info for proc callback */
		73	void *proc_dev;
		74	#endif
		75	struct device dev;
		76	char name[32];
		77	};
		78	#define to_mca_device(mdev) container_of(mdev, struct mca_device, dev)
		79
		80	struct mca_bus_accessor_functions {
		81	unsigned char (mca_read_pos)(struct mca_device , int reg);
		82	void (mca_write_pos)(struct mca_device , int reg,
		83	unsigned char byte);
		84	int (mca_transform_irq)(struct mca_device , int irq);
		85	int (mca_transform_ioport)(struct mca_device ,
		86	int region);
		87	void * (mca_transform_memory)(struct mca_device ,
		88	void *memory);
		89	};
		90
		91	struct mca_bus {
		92	u64 default_dma_mask;
		93	int number;
		94	struct mca_bus_accessor_functions f;
		95	struct device dev;
		96	char name[32];
		97	};
		98	#define to_mca_bus(mdev) container_of(mdev, struct mca_bus, dev)
		99
		100	struct mca_driver {
		101	const short *id_table;
		102	void *driver_data;
		103	struct device_driver driver;
		104	};
		105	#define to_mca_driver(mdriver) container_of(mdriver, struct mca_driver, driver)
		106
		107	/* Ongoing supported API functions */
		108	extern struct mca_device *mca_find_device_by_slot(int slot);
		109	extern int mca_system_init(void);
		110	extern struct mca_bus *mca_attach_bus(int);
		111
		112	extern unsigned char mca_device_read_stored_pos(struct mca_device *mca_dev,
		113	int reg);
		114	extern unsigned char mca_device_read_pos(struct mca_device *mca_dev, int reg);
		115	extern void mca_device_write_pos(struct mca_device *mca_dev, int reg,
		116	unsigned char byte);
		117	extern int mca_device_transform_irq(struct mca_device *mca_dev, int irq);
		118	extern int mca_device_transform_ioport(struct mca_device *mca_dev, int port);
		119	extern void mca_device_transform_memory(struct mca_device mca_dev,
		120	void *mem);
		121	extern int mca_device_claimed(struct mca_device *mca_dev);
		122	extern void mca_device_set_claim(struct mca_device *mca_dev, int val);
		123	extern void mca_device_set_name(struct mca_device mca_dev, const char name);
		124	static inline char mca_device_get_name(struct mca_device mca_dev)
		125	{
		126	return mca_dev ? mca_dev->name : NULL;
		127	}
		128
		129	extern enum MCA_AdapterStatus mca_device_status(struct mca_device *mca_dev);
		130
		131	extern struct bus_type mca_bus_type;
		132
		133	extern int mca_register_driver(struct mca_driver *drv);
		134	extern void mca_unregister_driver(struct mca_driver *drv);
		135
		136	/* WARNING: only called by the boot time device setup */
		137	extern int mca_register_device(int bus, struct mca_device *mca_dev);
		138
		139	#ifdef CONFIG_MCA_PROC_FS
		140	extern void mca_do_proc_init(void);
		141	extern void mca_set_adapter_procfn(int slot, MCA_ProcFn, void* dev);
		142	#else
		143	static inline void mca_do_proc_init(void)
		144	{
		145	}
		146
		147	static inline void mca_set_adapter_procfn(int slot, MCA_ProcFn fn, void dev)
		148	{
		149	}
		150	#endif
		151
		152	#endif /* _LINUX_MCA_H */

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