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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | nubus.h: various definitions and prototypes for NuBus drivers to use. | |
4 | ||
5 | Originally written by Alan Cox. | |
6 | ||
7 | Hacked to death by C. Scott Ananian and David Huggins-Daines. | |
8 | ||
9 | Some of the constants in here are from the corresponding | |
10 | NetBSD/OpenBSD header file, by Allen Briggs. We figured out the | |
11 | rest of them on our own. */ | |
1da177e4 LT |
12 | #ifndef LINUX_NUBUS_H |
13 | #define LINUX_NUBUS_H | |
14 | ||
1da177e4 | 15 | #include <asm/nubus.h> |
607ca46e | 16 | #include <uapi/linux/nubus.h> |
1da177e4 | 17 | |
1da177e4 LT |
18 | struct nubus_board { |
19 | struct nubus_board* next; | |
20 | struct nubus_dev* first_dev; | |
21 | ||
f8779588 | 22 | /* Only 9-E actually exist, though 0-8 are also theoretically |
1da177e4 LT |
23 | possible, and 0 is a special case which represents the |
24 | motherboard and onboard peripherals (Ethernet, video) */ | |
25 | int slot; | |
26 | /* For slot 0, this is bogus. */ | |
27 | char name[64]; | |
28 | ||
29 | /* Format block */ | |
30 | unsigned char* fblock; | |
31 | /* Root directory (does *not* always equal fblock + doffset!) */ | |
32 | unsigned char* directory; | |
33 | ||
34 | unsigned long slot_addr; | |
35 | /* Offset to root directory (sometimes) */ | |
36 | unsigned long doffset; | |
37 | /* Length over which to compute the crc */ | |
38 | unsigned long rom_length; | |
39 | /* Completely useless most of the time */ | |
40 | unsigned long crc; | |
41 | unsigned char rev; | |
42 | unsigned char format; | |
43 | unsigned char lanes; | |
44 | }; | |
45 | ||
46 | struct nubus_dev { | |
47 | /* Next link in device list */ | |
48 | struct nubus_dev* next; | |
49 | /* Directory entry in /proc/bus/nubus */ | |
50 | struct proc_dir_entry* procdir; | |
51 | ||
52 | /* The functional resource ID of this device */ | |
53 | unsigned char resid; | |
54 | /* These are mostly here for convenience; we could always read | |
55 | them from the ROMs if we wanted to */ | |
56 | unsigned short category; | |
57 | unsigned short type; | |
58 | unsigned short dr_sw; | |
59 | unsigned short dr_hw; | |
60 | /* This is the device's name rather than the board's. | |
61 | Sometimes they are different. Usually the board name is | |
62 | more correct. */ | |
63 | char name[64]; | |
64 | /* MacOS driver (I kid you not) */ | |
65 | unsigned char* driver; | |
66 | /* Actually this is an offset */ | |
67 | unsigned long iobase; | |
68 | unsigned long iosize; | |
69 | unsigned char flags, hwdevid; | |
70 | ||
71 | /* Functional directory */ | |
72 | unsigned char* directory; | |
73 | /* Much of our info comes from here */ | |
74 | struct nubus_board* board; | |
75 | }; | |
76 | ||
77 | /* This is all NuBus devices (used to find devices later on) */ | |
78 | extern struct nubus_dev* nubus_devices; | |
79 | /* This is all NuBus cards */ | |
80 | extern struct nubus_board* nubus_boards; | |
81 | ||
82 | /* Generic NuBus interface functions, modelled after the PCI interface */ | |
83 | void nubus_scan_bus(void); | |
11db656a | 84 | #ifdef CONFIG_PROC_FS |
1da177e4 | 85 | extern void nubus_proc_init(void); |
11db656a DH |
86 | #else |
87 | static inline void nubus_proc_init(void) {} | |
88 | #endif | |
1da177e4 LT |
89 | int get_nubus_list(char *buf); |
90 | int nubus_proc_attach_device(struct nubus_dev *dev); | |
1da177e4 LT |
91 | /* If we need more precision we can add some more of these */ |
92 | struct nubus_dev* nubus_find_device(unsigned short category, | |
93 | unsigned short type, | |
94 | unsigned short dr_hw, | |
95 | unsigned short dr_sw, | |
96 | const struct nubus_dev* from); | |
97 | struct nubus_dev* nubus_find_type(unsigned short category, | |
98 | unsigned short type, | |
99 | const struct nubus_dev* from); | |
100 | /* Might have more than one device in a slot, you know... */ | |
101 | struct nubus_dev* nubus_find_slot(unsigned int slot, | |
102 | const struct nubus_dev* from); | |
103 | ||
104 | /* These are somewhat more NuBus-specific. They all return 0 for | |
105 | success and -1 for failure, as you'd expect. */ | |
106 | ||
107 | /* The root directory which contains the board and functional | |
108 | directories */ | |
109 | int nubus_get_root_dir(const struct nubus_board* board, | |
110 | struct nubus_dir* dir); | |
111 | /* The board directory */ | |
112 | int nubus_get_board_dir(const struct nubus_board* board, | |
113 | struct nubus_dir* dir); | |
114 | /* The functional directory */ | |
115 | int nubus_get_func_dir(const struct nubus_dev* dev, | |
116 | struct nubus_dir* dir); | |
117 | ||
118 | /* These work on any directory gotten via the above */ | |
119 | int nubus_readdir(struct nubus_dir* dir, | |
120 | struct nubus_dirent* ent); | |
121 | int nubus_find_rsrc(struct nubus_dir* dir, | |
122 | unsigned char rsrc_type, | |
123 | struct nubus_dirent* ent); | |
124 | int nubus_rewinddir(struct nubus_dir* dir); | |
125 | ||
126 | /* Things to do with directory entries */ | |
127 | int nubus_get_subdir(const struct nubus_dirent* ent, | |
128 | struct nubus_dir* dir); | |
129 | void nubus_get_rsrc_mem(void* dest, | |
130 | const struct nubus_dirent *dirent, | |
131 | int len); | |
132 | void nubus_get_rsrc_str(void* dest, | |
133 | const struct nubus_dirent *dirent, | |
134 | int maxlen); | |
1da177e4 | 135 | #endif /* LINUX_NUBUS_H */ |