File: /usr/src/linux/include/linux/major.h
1 #ifndef _LINUX_MAJOR_H
2 #define _LINUX_MAJOR_H
3
4 /*
5 * This file has definitions for major device numbers.
6 * For the device number assignments, see Documentation/devices.txt.
7 */
8
9 /* limits */
10
11 /*
12 * Important: Don't change this to 256. Major number 255 is and must be
13 * reserved for future expansion into a larger dev_t space.
14 */
15 #define MAX_CHRDEV 255
16 #define MAX_BLKDEV 255
17
18 #define UNNAMED_MAJOR 0
19 #define MEM_MAJOR 1
20 #define RAMDISK_MAJOR 1
21 #define FLOPPY_MAJOR 2
22 #define PTY_MASTER_MAJOR 2
23 #define IDE0_MAJOR 3
24 #define PTY_SLAVE_MAJOR 3
25 #define HD_MAJOR IDE0_MAJOR
26 #define TTY_MAJOR 4
27 #define TTYAUX_MAJOR 5
28 #define LP_MAJOR 6
29 #define VCS_MAJOR 7
30 #define LOOP_MAJOR 7
31 #define SCSI_DISK0_MAJOR 8
32 #define SCSI_TAPE_MAJOR 9
33 #define MD_MAJOR 9
34 #define MISC_MAJOR 10
35 #define SCSI_CDROM_MAJOR 11
36 #define QIC02_TAPE_MAJOR 12
37 #define XT_DISK_MAJOR 13
38 #define SOUND_MAJOR 14
39 #define CDU31A_CDROM_MAJOR 15
40 #define JOYSTICK_MAJOR 15
41 #define GOLDSTAR_CDROM_MAJOR 16
42 #define OPTICS_CDROM_MAJOR 17
43 #define SANYO_CDROM_MAJOR 18
44 #define CYCLADES_MAJOR 19
45 #define CYCLADESAUX_MAJOR 20
46 #define MITSUMI_X_CDROM_MAJOR 20
47 #define MFM_ACORN_MAJOR 21 /* ARM Linux /dev/mfm */
48 #define SCSI_GENERIC_MAJOR 21
49 #define Z8530_MAJOR 34
50 #define DIGI_MAJOR 23
51 #define IDE1_MAJOR 22
52 #define DIGICU_MAJOR 22
53 #define MITSUMI_CDROM_MAJOR 23
54 #define CDU535_CDROM_MAJOR 24
55 #define STL_SERIALMAJOR 24
56 #define MATSUSHITA_CDROM_MAJOR 25
57 #define STL_CALLOUTMAJOR 25
58 #define MATSUSHITA_CDROM2_MAJOR 26
59 #define QIC117_TAPE_MAJOR 27
60 #define MATSUSHITA_CDROM3_MAJOR 27
61 #define MATSUSHITA_CDROM4_MAJOR 28
62 #define STL_SIOMEMMAJOR 28
63 #define ACSI_MAJOR 28
64 #define AZTECH_CDROM_MAJOR 29
65 #define GRAPHDEV_MAJOR 29 /* SparcLinux & Linux/68k /dev/fb */
66 #define SHMIQ_MAJOR 85 /* Linux/mips, SGI /dev/shmiq */
67 #define CM206_CDROM_MAJOR 32
68 #define IDE2_MAJOR 33
69 #define IDE3_MAJOR 34
70 #define XPRAM_MAJOR 35 /* expanded storage on S/390 = "slow ram" */
71 /* proposed by Peter */
72 #define NETLINK_MAJOR 36
73 #define PS2ESDI_MAJOR 36
74 #define IDETAPE_MAJOR 37
75 #define Z2RAM_MAJOR 37
76 #define APBLOCK_MAJOR 38 /* AP1000 Block device */
77 #define DDV_MAJOR 39 /* AP1000 DDV block device */
78 #define NBD_MAJOR 43 /* Network block device */
79 #define RISCOM8_NORMAL_MAJOR 48
80 #define DAC960_MAJOR 48 /* 48..55 */
81 #define RISCOM8_CALLOUT_MAJOR 49
82 #define MKISS_MAJOR 55
83 #define DSP56K_MAJOR 55 /* DSP56001 processor device */
84
85 #define IDE4_MAJOR 56
86 #define IDE5_MAJOR 57
87
88 #define LVM_BLK_MAJOR 58 /* Logical Volume Manager */
89
90 #define SCSI_DISK1_MAJOR 65
91 #define SCSI_DISK2_MAJOR 66
92 #define SCSI_DISK3_MAJOR 67
93 #define SCSI_DISK4_MAJOR 68
94 #define SCSI_DISK5_MAJOR 69
95 #define SCSI_DISK6_MAJOR 70
96 #define SCSI_DISK7_MAJOR 71
97
98
99 #define COMPAQ_SMART2_MAJOR 72
100 #define COMPAQ_SMART2_MAJOR1 73
101 #define COMPAQ_SMART2_MAJOR2 74
102 #define COMPAQ_SMART2_MAJOR3 75
103 #define COMPAQ_SMART2_MAJOR4 76
104 #define COMPAQ_SMART2_MAJOR5 77
105 #define COMPAQ_SMART2_MAJOR6 78
106 #define COMPAQ_SMART2_MAJOR7 79
107
108 #define SPECIALIX_NORMAL_MAJOR 75
109 #define SPECIALIX_CALLOUT_MAJOR 76
110
111 #define COMPAQ_CISS_MAJOR 104
112 #define COMPAQ_CISS_MAJOR1 105
113 #define COMPAQ_CISS_MAJOR2 106
114 #define COMPAQ_CISS_MAJOR3 107
115 #define COMPAQ_CISS_MAJOR4 108
116 #define COMPAQ_CISS_MAJOR5 109
117 #define COMPAQ_CISS_MAJOR6 110
118 #define COMPAQ_CISS_MAJOR7 111
119
120 #define ATARAID_MAJOR 114
121
122 #define DASD_MAJOR 94 /* Official assignations from Peter */
123
124 #define MDISK_MAJOR 95 /* Official assignations from Peter */
125
126 #define I2O_MAJOR 80 /* 80->87 */
127
128 #define IDE6_MAJOR 88
129 #define IDE7_MAJOR 89
130 #define IDE8_MAJOR 90
131 #define IDE9_MAJOR 91
132
133 #define UBD_MAJOR 98
134
135 #define AURORA_MAJOR 79
136
137 #define JSFD_MAJOR 99
138
139 #define PHONE_MAJOR 100
140
141 #define LVM_CHAR_MAJOR 109 /* Logical Volume Manager */
142
143 #define RTF_MAJOR 150
144 #define RAW_MAJOR 162
145
146 #define USB_ACM_MAJOR 166
147 #define USB_ACM_AUX_MAJOR 167
148 #define USB_CHAR_MAJOR 180
149
150 #define UNIX98_PTY_MASTER_MAJOR 128
151 #define UNIX98_PTY_MAJOR_COUNT 8
152 #define UNIX98_PTY_SLAVE_MAJOR (UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT)
153
154 #define VXVM_MAJOR 199 /* VERITAS volume i/o driver */
155 #define VXSPEC_MAJOR 200 /* VERITAS volume config driver */
156 #define VXDMP_MAJOR 201 /* VERITAS volume multipath driver */
157
158 #define MSR_MAJOR 202
159 #define CPUID_MAJOR 203
160
161 #define OSST_MAJOR 206 /* OnStream-SCx0 SCSI tape */
162
163 #define IBM_TTY3270_MAJOR 227 /* Official allocations now */
164 #define IBM_FS3270_MAJOR 228
165
166 /*
167 * Tests for SCSI devices.
168 */
169
170 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
171 ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
172
173 #define SCSI_BLK_MAJOR(M) \
174 (SCSI_DISK_MAJOR(M) \
175 || (M) == SCSI_CDROM_MAJOR)
176
177 static __inline__ int scsi_blk_major(int m) {
178 return SCSI_BLK_MAJOR(m);
179 }
180
181 /*
182 * Tests for IDE devices
183 */
184 #define IDE_DISK_MAJOR(M) ((M) == IDE0_MAJOR || (M) == IDE1_MAJOR || \
185 (M) == IDE2_MAJOR || (M) == IDE3_MAJOR || \
186 (M) == IDE4_MAJOR || (M) == IDE5_MAJOR || \
187 (M) == IDE6_MAJOR || (M) == IDE7_MAJOR || \
188 (M) == IDE8_MAJOR || (M) == IDE9_MAJOR)
189
190 static __inline__ int ide_blk_major(int m)
191 {
192 return IDE_DISK_MAJOR(m);
193 }
194
195 #endif
196