forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
5.5 KiB
188 lines
5.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
nubus.h: various definitions and prototypes for NuBus drivers to use. |
|
|
|
Originally written by Alan Cox. |
|
|
|
Hacked to death by C. Scott Ananian and David Huggins-Daines. |
|
*/ |
|
|
|
#ifndef LINUX_NUBUS_H |
|
#define LINUX_NUBUS_H |
|
|
|
#include <linux/device.h> |
|
#include <asm/nubus.h> |
|
#include <uapi/linux/nubus.h> |
|
|
|
struct proc_dir_entry; |
|
struct seq_file; |
|
|
|
struct nubus_dir { |
|
unsigned char *base; |
|
unsigned char *ptr; |
|
int done; |
|
int mask; |
|
struct proc_dir_entry *procdir; |
|
}; |
|
|
|
struct nubus_dirent { |
|
unsigned char *base; |
|
unsigned char type; |
|
__u32 data; /* Actually 24 bits used */ |
|
int mask; |
|
}; |
|
|
|
struct nubus_board { |
|
struct device dev; |
|
|
|
/* Only 9-E actually exist, though 0-8 are also theoretically |
|
possible, and 0 is a special case which represents the |
|
motherboard and onboard peripherals (Ethernet, video) */ |
|
int slot; |
|
/* For slot 0, this is bogus. */ |
|
char name[64]; |
|
|
|
/* Format block */ |
|
unsigned char *fblock; |
|
/* Root directory (does *not* always equal fblock + doffset!) */ |
|
unsigned char *directory; |
|
|
|
unsigned long slot_addr; |
|
/* Offset to root directory (sometimes) */ |
|
unsigned long doffset; |
|
/* Length over which to compute the crc */ |
|
unsigned long rom_length; |
|
/* Completely useless most of the time */ |
|
unsigned long crc; |
|
unsigned char rev; |
|
unsigned char format; |
|
unsigned char lanes; |
|
|
|
/* Directory entry in /proc/bus/nubus */ |
|
struct proc_dir_entry *procdir; |
|
}; |
|
|
|
struct nubus_rsrc { |
|
struct list_head list; |
|
|
|
/* The functional resource ID */ |
|
unsigned char resid; |
|
/* These are mostly here for convenience; we could always read |
|
them from the ROMs if we wanted to */ |
|
unsigned short category; |
|
unsigned short type; |
|
unsigned short dr_sw; |
|
unsigned short dr_hw; |
|
|
|
/* Functional directory */ |
|
unsigned char *directory; |
|
/* Much of our info comes from here */ |
|
struct nubus_board *board; |
|
}; |
|
|
|
/* This is all NuBus functional resources (used to find devices later on) */ |
|
extern struct list_head nubus_func_rsrcs; |
|
|
|
struct nubus_driver { |
|
struct device_driver driver; |
|
int (*probe)(struct nubus_board *board); |
|
int (*remove)(struct nubus_board *board); |
|
}; |
|
|
|
extern struct bus_type nubus_bus_type; |
|
|
|
/* Generic NuBus interface functions, modelled after the PCI interface */ |
|
#ifdef CONFIG_PROC_FS |
|
void nubus_proc_init(void); |
|
struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board); |
|
struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent, |
|
struct nubus_board *board); |
|
void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent, |
|
unsigned int size); |
|
void nubus_proc_add_rsrc(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent); |
|
#else |
|
static inline void nubus_proc_init(void) {} |
|
static inline |
|
struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board) |
|
{ return NULL; } |
|
static inline |
|
struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent, |
|
struct nubus_board *board) |
|
{ return NULL; } |
|
static inline void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent, |
|
unsigned int size) {} |
|
static inline void nubus_proc_add_rsrc(struct proc_dir_entry *procdir, |
|
const struct nubus_dirent *ent) {} |
|
#endif |
|
|
|
struct nubus_rsrc *nubus_first_rsrc_or_null(void); |
|
struct nubus_rsrc *nubus_next_rsrc_or_null(struct nubus_rsrc *from); |
|
|
|
#define for_each_func_rsrc(f) \ |
|
for (f = nubus_first_rsrc_or_null(); f; f = nubus_next_rsrc_or_null(f)) |
|
|
|
#define for_each_board_func_rsrc(b, f) \ |
|
for_each_func_rsrc(f) if (f->board != b) {} else |
|
|
|
/* These are somewhat more NuBus-specific. They all return 0 for |
|
success and -1 for failure, as you'd expect. */ |
|
|
|
/* The root directory which contains the board and functional |
|
directories */ |
|
int nubus_get_root_dir(const struct nubus_board *board, |
|
struct nubus_dir *dir); |
|
/* The board directory */ |
|
int nubus_get_board_dir(const struct nubus_board *board, |
|
struct nubus_dir *dir); |
|
/* The functional directory */ |
|
int nubus_get_func_dir(const struct nubus_rsrc *fres, struct nubus_dir *dir); |
|
|
|
/* These work on any directory gotten via the above */ |
|
int nubus_readdir(struct nubus_dir *dir, |
|
struct nubus_dirent *ent); |
|
int nubus_find_rsrc(struct nubus_dir *dir, |
|
unsigned char rsrc_type, |
|
struct nubus_dirent *ent); |
|
int nubus_rewinddir(struct nubus_dir *dir); |
|
|
|
/* Things to do with directory entries */ |
|
int nubus_get_subdir(const struct nubus_dirent *ent, |
|
struct nubus_dir *dir); |
|
void nubus_get_rsrc_mem(void *dest, const struct nubus_dirent *dirent, |
|
unsigned int len); |
|
unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent, |
|
unsigned int len); |
|
void nubus_seq_write_rsrc_mem(struct seq_file *m, |
|
const struct nubus_dirent *dirent, |
|
unsigned int len); |
|
unsigned char *nubus_dirptr(const struct nubus_dirent *nd); |
|
|
|
/* Declarations relating to driver model objects */ |
|
int nubus_parent_device_register(void); |
|
int nubus_device_register(struct nubus_board *board); |
|
int nubus_driver_register(struct nubus_driver *ndrv); |
|
void nubus_driver_unregister(struct nubus_driver *ndrv); |
|
int nubus_proc_show(struct seq_file *m, void *data); |
|
|
|
static inline void nubus_set_drvdata(struct nubus_board *board, void *data) |
|
{ |
|
dev_set_drvdata(&board->dev, data); |
|
} |
|
|
|
static inline void *nubus_get_drvdata(struct nubus_board *board) |
|
{ |
|
return dev_get_drvdata(&board->dev); |
|
} |
|
|
|
/* Returns a pointer to the "standard" slot space. */ |
|
static inline void *nubus_slot_addr(int slot) |
|
{ |
|
return (void *)(0xF0000000 | (slot << 24)); |
|
} |
|
|
|
#endif /* LINUX_NUBUS_H */
|
|
|