66 #ifdef _KERNEL
67
68 /*
69 * Convert a single byte to/from binary-coded decimal (BCD).
70 */
71 extern unsigned char byte_to_bcd[256];
72 extern unsigned char bcd_to_byte[256];
73
74 #define BYTE_TO_BCD(x) byte_to_bcd[(x) & 0xff]
75 #define BCD_TO_BYTE(x) bcd_to_byte[(x) & 0xff]
76
77 #endif /* _KERNEL */
78
79 /*
80 * WARNING: The device number macros defined here should not be used by device
81 * drivers or user software. Device drivers should use the device functions
82 * defined in the DDI/DKI interface (see also ddi.h). Application software
83 * should make use of the library routines available in makedev(3). A set of
84 * new device macros are provided to operate on the expanded device number
85 * format supported in SVR4. Macro versions of the DDI device functions are
86 * provided for use by kernel proper routines only. Macro routines bmajor(),
87 * major(), minor(), emajor(), eminor(), and makedev() will be removed or
88 * their definitions changed at the next major release following SVR4.
89 */
90
91 #define O_BITSMAJOR 7 /* # of SVR3 major device bits */
92 #define O_BITSMINOR 8 /* # of SVR3 minor device bits */
93 #define O_MAXMAJ 0x7f /* SVR3 max major value */
94 #define O_MAXMIN 0xff /* SVR3 max minor value */
95
96
97 #define L_BITSMAJOR32 14 /* # of SVR4 major device bits */
98 #define L_BITSMINOR32 18 /* # of SVR4 minor device bits */
99 #define L_MAXMAJ32 0x3fff /* SVR4 max major value */
100 #define L_MAXMIN32 0x3ffff /* MAX minor for 3b2 software drivers. */
101 /* For 3b2 hardware devices the minor is */
102 /* restricted to 256 (0-255) */
103
104 #ifdef _LP64
105 #define L_BITSMAJOR 32 /* # of major device bits in 64-bit Solaris */
106 #define L_BITSMINOR 32 /* # of minor device bits in 64-bit Solaris */
107 #define L_MAXMAJ 0xfffffffful /* max major value */
108 #define L_MAXMIN 0xfffffffful /* max minor value */
109 #else
110 #define L_BITSMAJOR L_BITSMAJOR32
111 #define L_BITSMINOR L_BITSMINOR32
112 #define L_MAXMAJ L_MAXMAJ32
113 #define L_MAXMIN L_MAXMIN32
114 #endif
115
116 #ifdef _KERNEL
117
118 /* major part of a device internal to the kernel */
119
120 #define major(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ)
121 #define bmajor(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ)
122
123 /* get internal major part of expanded device number */
124
125 #define getmajor(x) (major_t)((((dev_t)(x)) >> L_BITSMINOR) & L_MAXMAJ)
126
127 /* minor part of a device internal to the kernel */
128
129 #define minor(x) (minor_t)((x) & O_MAXMIN)
130
131 /* get internal minor part of expanded device number */
132
133 #define getminor(x) (minor_t)((x) & L_MAXMIN)
134
135 #else /* _KERNEL */
136
137 /* major part of a device external from the kernel (same as emajor below) */
138
139 #define major(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ)
140
141 /* minor part of a device external from the kernel (same as eminor below) */
142
143 #define minor(x) (minor_t)((x) & O_MAXMIN)
144
145 #endif /* _KERNEL */
146
147 /* create old device number */
148
149 #define makedev(x, y) (unsigned short)(((x) << O_BITSMINOR) | ((y) & O_MAXMIN))
150
151 /* make an new device number */
152
153 #define makedevice(x, y) (dev_t)(((dev_t)(x) << L_BITSMINOR) | ((y) & L_MAXMIN))
154
155
156 /*
157 * emajor() allows kernel/driver code to print external major numbers
158 * eminor() allows kernel/driver code to print external minor numbers
159 */
160
161 #define emajor(x) \
162 (major_t)(((unsigned int)(x) >> O_BITSMINOR) > O_MAXMAJ) ? \
163 NODEV : (((unsigned int)(x) >> O_BITSMINOR) & O_MAXMAJ)
164
165 #define eminor(x) \
166 (minor_t)((x) & O_MAXMIN)
167
168 /*
169 * get external major and minor device
170 * components from expanded device number
171 */
172 #define getemajor(x) (major_t)((((dev_t)(x) >> L_BITSMINOR) > L_MAXMAJ) ? \
173 NODEV : (((dev_t)(x) >> L_BITSMINOR) & L_MAXMAJ))
174 #define geteminor(x) (minor_t)((x) & L_MAXMIN)
175
176 /*
177 * These are versions of the kernel routines for compressing and
178 * expanding long device numbers that don't return errors.
179 */
180 #if (L_BITSMAJOR32 == L_BITSMAJOR) && (L_BITSMINOR32 == L_BITSMINOR)
181
182 #define DEVCMPL(x) (x)
183 #define DEVEXPL(x) (x)
184
185 #else
186
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66 #ifdef _KERNEL
67
68 /*
69 * Convert a single byte to/from binary-coded decimal (BCD).
70 */
71 extern unsigned char byte_to_bcd[256];
72 extern unsigned char bcd_to_byte[256];
73
74 #define BYTE_TO_BCD(x) byte_to_bcd[(x) & 0xff]
75 #define BCD_TO_BYTE(x) bcd_to_byte[(x) & 0xff]
76
77 #endif /* _KERNEL */
78
79 /*
80 * WARNING: The device number macros defined here should not be used by device
81 * drivers or user software. Device drivers should use the device functions
82 * defined in the DDI/DKI interface (see also ddi.h). Application software
83 * should make use of the library routines available in makedev(3). A set of
84 * new device macros are provided to operate on the expanded device number
85 * format supported in SVR4. Macro versions of the DDI device functions are
86 * provided for use by kernel proper routines only.
87 */
88
89 #define O_BITSMAJOR 7 /* # of SVR3 major device bits */
90 #define O_BITSMINOR 8 /* # of SVR3 minor device bits */
91 #define O_MAXMAJ 0x7f /* SVR3 max major value */
92 #define O_MAXMIN 0xff /* SVR3 max minor value */
93
94
95 #define L_BITSMAJOR32 14 /* # of SVR4 major device bits */
96 #define L_BITSMINOR32 18 /* # of SVR4 minor device bits */
97 #define L_MAXMAJ32 0x3fff /* SVR4 max major value */
98 #define L_MAXMIN32 0x3ffff /* MAX minor for 3b2 software drivers. */
99 /* For 3b2 hardware devices the minor is */
100 /* restricted to 256 (0-255) */
101
102 #ifdef _LP64
103 #define L_BITSMAJOR 32 /* # of major device bits in 64-bit Solaris */
104 #define L_BITSMINOR 32 /* # of minor device bits in 64-bit Solaris */
105 #define L_MAXMAJ 0xfffffffful /* max major value */
106 #define L_MAXMIN 0xfffffffful /* max minor value */
107 #else
108 #define L_BITSMAJOR L_BITSMAJOR32
109 #define L_BITSMINOR L_BITSMINOR32
110 #define L_MAXMAJ L_MAXMAJ32
111 #define L_MAXMIN L_MAXMIN32
112 #endif
113
114 #ifdef _KERNEL
115
116 /* get internal major part of expanded device number */
117
118 #define getmajor(x) (major_t)((((dev_t)(x)) >> L_BITSMINOR) & L_MAXMAJ)
119
120 /* get internal minor part of expanded device number */
121
122 #define getminor(x) (minor_t)((x) & L_MAXMIN)
123
124 #endif /* _KERNEL */
125
126 /* make an new device number */
127
128 #define makedevice(x, y) (dev_t)(((dev_t)(x) << L_BITSMINOR) | ((y) & L_MAXMIN))
129
130 /*
131 * get external major and minor device
132 * components from expanded device number
133 */
134 #define getemajor(x) (major_t)((((dev_t)(x) >> L_BITSMINOR) > L_MAXMAJ) ? \
135 NODEV : (((dev_t)(x) >> L_BITSMINOR) & L_MAXMAJ))
136 #define geteminor(x) (minor_t)((x) & L_MAXMIN)
137
138 /*
139 * These are versions of the kernel routines for compressing and
140 * expanding long device numbers that don't return errors.
141 */
142 #if (L_BITSMAJOR32 == L_BITSMAJOR) && (L_BITSMINOR32 == L_BITSMINOR)
143
144 #define DEVCMPL(x) (x)
145 #define DEVEXPL(x) (x)
146
147 #else
148
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