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1.1 root 1: #ifndef MDEV_H
2: #define MDEV_H
3:
4: /*
5: *-IMPORTS:
6: * <sys/compat.h>
7: * CONST
8: * EXTERN_C_BEGIN
9: * EXTERN_C_END
10: * PROTO ()
11: */
12:
13: #include <sys/compat.h>
14:
15: #ifndef SYMBOL_T
16: #define SYMBOL_T
17: typedef struct symbol symbol_t;
18: #endif
19:
20: #ifndef SDEV_T
21: #define SDEV_T
22: typedef struct sdevice sdev_t;
23: #endif
24:
25: #ifndef MDEV_T
26: #define MDEV_T
27: typedef struct mdevice mdev_t;
28: #endif
29:
30: #ifndef MDLIST_T
31: #define MDLIST_T
32: typedef struct mdlist mdlist_t;
33: #endif
34:
35:
36: enum {
37: MD_DISABLED,
38: MD_INSTALLABLE,
39: MD_ENABLED
40: };
41:
42:
43: /*
44: * Structure of the data gathered by the mkdev routines.
45: */
46:
47: typedef unsigned int maj_t;
48: typedef unsigned int min_t;
49:
50: struct mdevice {
51: mdev_t * md_next; /* global list of all entries */
52: mdev_t * md_link1; /* for sorts */
53: mdev_t * md_link2; /* for sorts */
54: mdev_t * md_link3; /* for sorts */
55:
56: sdev_t * md_sdevices; /* thread of "sdevice" entries */
57: int md_configure; /* See MD_... constants */
58: int md_interrupt; /* has an enabled interrupt */
59:
60: symbol_t * md_devname; /* internal module/device name */
61: symbol_t * md_functions; /* present driver entry points */
62: symbol_t * md_flags; /* driver characteristics */
63: symbol_t * md_prefix; /* driver prefix */
64: maj_t md_blk_maj [2]; /* block major number low, high */
65: maj_t md_chr_maj [2]; /* character major number low, high */
66: min_t md_minor_min; /* minor number minimum */
67: min_t md_minor_max; /* minor number maximum */
68:
69: /*
70: * The following fields are not used in the Coherent system as yet
71: * but are defined by mdevice (4) so we read them.
72: */
73:
74: int md_dma_chan; /* DMA channel number */
75: int md_cpu_id; /* processor-id */
76: };
77:
78:
79: /*
80: * Structure of a list of "mdevice" entries.
81: */
82:
83: struct mdlist {
84: mdev_t * mdl_first; /* first mdevice in list */
85: mdev_t * mdl_last; /* last mdevice in list */
86: int mdl_count; /* count of mdevices */
87: };
88:
89:
90: /*
91: * Types suitable for use as selection and comparison predicates for the
92: * mdev_sort () function.
93: */
94:
95: typedef int (* msel_t) PROTO ((mdev_t * _mdevp));
96: typedef int (* mcmp_t) PROTO ((mdev_t * _left, mdev_t * _right));
97:
98:
99: /*
100: * For Coherent, the first 32 major numbers are reserved for the use of the
101: * old-style Coherent device-driver system.
102: */
103:
104: enum { MAJOR_RESERVED = 32,
105: MAX_DEVNAME = 8,
106: MAX_PREFIX = 4
107: };
108:
109:
110: #define MDEV_OPEN 'o'
111: #define MDEV_CLOSE 'c'
112: #define MDEV_READ 'r'
113: #define MDEV_WRITE 'w'
114: #define MDEV_IOCTL 'i'
115: #define MDEV_STARTUP 's'
116: #define MDEV_EXIT 'x'
117: #define MDEV_INIT 'I'
118: #define MDEV_HALT 'h'
119: #define MDEV_CHPOLL 'p'
120:
121: #define MDEV_MMAP 'M' /* not defined in SVR4 mdevice (4) */
122: #define MDEV_SIZE 'z' /* not defined in SVR4 mdevice (4) */
123:
124: #define MDEV_FUNCS "ocrwisxIhpMz"
125:
126:
127: #define MDEV_INSTALLABLE 'i'
128: #define MDEV_CHAR 'c'
129: #define MDEV_BLOCK 'b'
130: #define MDEV_STREAM 'S'
131: #define MDEV_DDI_DDK 'f'
132: #define MDEV_TTY 't'
133: #define MDEV_ONE_SDEVICE 'o'
134: #define MDEV_REQUIRED 'r'
135: #define MDEV_SAME_MAJORS 'u'
136: #define MDEV_HARDWARE 'H'
137: #define MDEV_NO_INT 'G'
138: #define MDEV_SHARE_DMA 'D'
139: #define MDEV_MULTIPLE_MAJORS 'M'
140: #define MDEV_ALLOW_IOA_OVERLAP 'O'
141:
142: #define MDEV_FLAGS "icbSftoruHGDMO"
143:
144:
145: EXTERN_C_BEGIN
146:
147: mdev_t * find_mdev PROTO ((symbol_t * _sym));
148: mdev_t * mdevices PROTO ((void));
149: int mdev_func PROTO ((mdev_t * _mdevp, char _func));
150: int mdev_flag PROTO ((mdev_t * _mdevp, char _flag));
151: void read_mdev_file PROTO ((CONST char * _name));
152: void mdev_sort PROTO ((mdlist_t * _mlistp, msel_t _selpred,
153: mcmp_t _cmppred, size_t ptroff));
154:
155: EXTERN_C_END
156:
157: #endif /* ! defined (MDEV_H) */
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