mca.h
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上传日期:2009-04-28
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- /*
- * 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;
- 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 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 */