projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 99fe9747 | 1 | /* mba.c 4.3 81/03/15 */ |
| 6810489f BJ |
2 | |
| 3 | #include "../h/param.h" | |
| 4 | #include "../h/inode.h" | |
| 5 | #include "../h/pte.h" | |
| 99fe9747 | 6 | #include "../h/mbareg.h" |
| 6810489f BJ |
7 | #include "../h/mtpr.h" |
| 8 | #include "../h/vm.h" | |
| 9 | #include "saio.h" | |
| 99fe9747 | 10 | #include "savax.h" |
| 6810489f | 11 | |
| 99fe9747 BJ |
12 | mbastart(io, func) |
| 13 | register struct iob *io; | |
| 14 | int func; | |
| 6810489f | 15 | { |
| 99fe9747 BJ |
16 | struct mba_regs *mba = mbamba(io->i_unit); |
| 17 | struct mba_drv *drv = mbadrv(io->i_unit); | |
| 18 | register struct pte *pte = mba->mba_map; | |
| 6810489f BJ |
19 | int npf; |
| 20 | unsigned v; | |
| 6810489f BJ |
21 | int o; |
| 22 | int vaddr; | |
| 6810489f | 23 | |
| 6810489f BJ |
24 | v = btop(io->i_ma); |
| 25 | o = (int)io->i_ma & PGOFSET; | |
| 26 | npf = btoc(io->i_cc + o); | |
| 99fe9747 | 27 | vaddr = o; |
| 6810489f BJ |
28 | while (--npf >= 0) |
| 29 | *(int *)pte++ = v++ | PG_V; | |
| 99fe9747 BJ |
30 | mba->mba_sr = -1; |
| 31 | mba->mba_bcr = -io->i_cc; | |
| 32 | mba->mba_var = vaddr; | |
| 33 | if (func == WRITE) | |
| 34 | drv->mbd_cs1 = MB_WCOM | MB_GO; | |
| 35 | else | |
| 36 | drv->mbd_cs1 = MB_RCOM | MB_GO; | |
| 6810489f | 37 | } |
| 56a904c5 BJ |
38 | |
| 39 | mbainit(mbanum) | |
| 40 | int mbanum; | |
| 41 | { | |
| 99fe9747 | 42 | register struct mba_regs *mba = mbaddr[mbanum]; |
| 56a904c5 | 43 | |
| 99fe9747 BJ |
44 | /* SHOULD BADADDR IT */ |
| 45 | if (mbaact & (1<<mbanum)) | |
| 46 | return; | |
| 47 | mba->mba_cr = MBCR_INIT; | |
| 56a904c5 BJ |
48 | mbaact |= 1<<mbanum; |
| 49 | } |