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135 lines
4.1 KiB
135 lines
4.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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nubus.h: various definitions and prototypes for NuBus drivers to use. |
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Originally written by Alan Cox. |
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Hacked to death by C. Scott Ananian and David Huggins-Daines. |
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Some of the constants in here are from the corresponding |
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NetBSD/OpenBSD header file, by Allen Briggs. We figured out the |
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rest of them on our own. */ |
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#ifndef LINUX_NUBUS_H |
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#define LINUX_NUBUS_H |
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#include <asm/nubus.h> |
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#include <uapi/linux/nubus.h> |
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struct nubus_board { |
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struct nubus_board* next; |
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struct nubus_dev* first_dev; |
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/* Only 9-E actually exist, though 0-8 are also theoretically |
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possible, and 0 is a special case which represents the |
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motherboard and onboard peripherals (Ethernet, video) */ |
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int slot; |
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/* For slot 0, this is bogus. */ |
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char name[64]; |
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/* Format block */ |
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unsigned char* fblock; |
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/* Root directory (does *not* always equal fblock + doffset!) */ |
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unsigned char* directory; |
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unsigned long slot_addr; |
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/* Offset to root directory (sometimes) */ |
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unsigned long doffset; |
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/* Length over which to compute the crc */ |
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unsigned long rom_length; |
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/* Completely useless most of the time */ |
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unsigned long crc; |
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unsigned char rev; |
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unsigned char format; |
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unsigned char lanes; |
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}; |
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struct nubus_dev { |
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/* Next link in device list */ |
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struct nubus_dev* next; |
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/* Directory entry in /proc/bus/nubus */ |
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struct proc_dir_entry* procdir; |
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/* The functional resource ID of this device */ |
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unsigned char resid; |
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/* These are mostly here for convenience; we could always read |
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them from the ROMs if we wanted to */ |
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unsigned short category; |
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unsigned short type; |
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unsigned short dr_sw; |
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unsigned short dr_hw; |
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/* This is the device's name rather than the board's. |
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Sometimes they are different. Usually the board name is |
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more correct. */ |
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char name[64]; |
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/* MacOS driver (I kid you not) */ |
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unsigned char* driver; |
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/* Actually this is an offset */ |
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unsigned long iobase; |
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unsigned long iosize; |
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unsigned char flags, hwdevid; |
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/* Functional directory */ |
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unsigned char* directory; |
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/* Much of our info comes from here */ |
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struct nubus_board* board; |
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}; |
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/* This is all NuBus devices (used to find devices later on) */ |
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extern struct nubus_dev* nubus_devices; |
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/* This is all NuBus cards */ |
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extern struct nubus_board* nubus_boards; |
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/* Generic NuBus interface functions, modelled after the PCI interface */ |
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void nubus_scan_bus(void); |
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#ifdef CONFIG_PROC_FS |
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extern void nubus_proc_init(void); |
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#else |
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static inline void nubus_proc_init(void) {} |
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#endif |
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int get_nubus_list(char *buf); |
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int nubus_proc_attach_device(struct nubus_dev *dev); |
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/* If we need more precision we can add some more of these */ |
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struct nubus_dev* nubus_find_device(unsigned short category, |
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unsigned short type, |
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unsigned short dr_hw, |
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unsigned short dr_sw, |
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const struct nubus_dev* from); |
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struct nubus_dev* nubus_find_type(unsigned short category, |
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unsigned short type, |
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const struct nubus_dev* from); |
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/* Might have more than one device in a slot, you know... */ |
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struct nubus_dev* nubus_find_slot(unsigned int slot, |
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const struct nubus_dev* from); |
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/* These are somewhat more NuBus-specific. They all return 0 for |
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success and -1 for failure, as you'd expect. */ |
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/* The root directory which contains the board and functional |
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directories */ |
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int nubus_get_root_dir(const struct nubus_board* board, |
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struct nubus_dir* dir); |
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/* The board directory */ |
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int nubus_get_board_dir(const struct nubus_board* board, |
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struct nubus_dir* dir); |
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/* The functional directory */ |
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int nubus_get_func_dir(const struct nubus_dev* dev, |
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struct nubus_dir* dir); |
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/* These work on any directory gotten via the above */ |
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int nubus_readdir(struct nubus_dir* dir, |
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struct nubus_dirent* ent); |
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int nubus_find_rsrc(struct nubus_dir* dir, |
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unsigned char rsrc_type, |
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struct nubus_dirent* ent); |
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int nubus_rewinddir(struct nubus_dir* dir); |
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/* Things to do with directory entries */ |
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int nubus_get_subdir(const struct nubus_dirent* ent, |
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struct nubus_dir* dir); |
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void nubus_get_rsrc_mem(void* dest, |
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const struct nubus_dirent *dirent, |
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int len); |
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void nubus_get_rsrc_str(void* dest, |
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const struct nubus_dirent *dirent, |
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int maxlen); |
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#endif /* LINUX_NUBUS_H */
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