149 lines
4.3 KiB
C
149 lines
4.3 KiB
C
/*
|
|
* 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 */
|