projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3d2087b6 | 1 | /* saio.h 4.6 %G% */ |
| 96dca2cc BJ |
2 | |
| 3 | /* | |
| 4 | * header file for standalone package | |
| 5 | */ | |
| 6 | ||
| 7 | /* | |
| 8 | * io block: includes an | |
| 9 | * inode, cells for the use of seek, etc, | |
| 10 | * and a buffer. | |
| 11 | */ | |
| 12 | struct iob { | |
| 13 | char i_flgs; | |
| 14 | struct inode i_ino; | |
| 15 | int i_unit; | |
| 16 | daddr_t i_boff; | |
| 17 | daddr_t i_cyloff; | |
| 18 | off_t i_offset; | |
| 19 | daddr_t i_bn; | |
| 20 | char *i_ma; | |
| 21 | int i_cc; | |
| cb31612d KM |
22 | char i_buf[MAXBSIZE]; |
| 23 | union { | |
| 24 | struct fs ui_fs; | |
| 25 | char dummy[SBSIZE]; | |
| 26 | } i_un; | |
| 96dca2cc | 27 | }; |
| cb31612d | 28 | #define i_fs i_un.ui_fs |
| 96dca2cc BJ |
29 | |
| 30 | #define F_READ 01 | |
| 31 | #define F_WRITE 02 | |
| 32 | #define F_ALLOC 04 | |
| 33 | #define F_FILE 010 | |
| 34 | ||
| 35 | /* | |
| 36 | * dev switch | |
| 37 | */ | |
| 38 | struct devsw { | |
| 39 | char *dv_name; | |
| 40 | int (*dv_strategy)(); | |
| 41 | int (*dv_open)(); | |
| 42 | int (*dv_close)(); | |
| 43 | }; | |
| 44 | ||
| 45 | struct devsw devsw[]; | |
| 46 | ||
| 47 | /* | |
| 48 | * request codes. Must be the same a F_XXX above | |
| 49 | */ | |
| 50 | #define READ 1 | |
| 51 | #define WRITE 2 | |
| 52 | ||
| 53 | #define NBUFS 4 | |
| 54 | ||
| cb31612d | 55 | char b[NBUFS][MAXBSIZE]; |
| 96dca2cc BJ |
56 | daddr_t blknos[NBUFS]; |
| 57 | ||
| 58 | #define NFILES 4 | |
| 59 | struct iob iob[NFILES]; | |
| 3d2087b6 KM |
60 | |
| 61 | #define PHYSUBA0 0x20006000 | |
| 62 | #define PHYSMBA0 0x20010000 | |
| 63 | #define PHYSMBA1 0x20012000 | |
| 64 | #define PHYSUMEM 0x2013e000 |