Commit | Line | Data |
---|---|---|
e6d9ed6d C |
1 | /* mba.c 4.3 81/03/15 */ |
2 | ||
3 | #include "../h/param.h" | |
4 | #include "../h/inode.h" | |
5 | #include "../h/pte.h" | |
6 | #include "../h/mbareg.h" | |
7 | #include "../h/mtpr.h" | |
8 | #include "../h/vm.h" | |
9 | #include "saio.h" | |
10 | #include "savax.h" | |
11 | ||
12 | mbastart(io, func) | |
13 | register struct iob *io; | |
14 | int func; | |
15 | { | |
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; | |
19 | int npf; | |
20 | unsigned v; | |
21 | int o; | |
22 | int vaddr; | |
23 | ||
24 | v = btop(io->i_ma); | |
25 | o = (int)io->i_ma & PGOFSET; | |
26 | npf = btoc(io->i_cc + o); | |
27 | vaddr = o; | |
28 | while (--npf >= 0) | |
29 | *(int *)pte++ = v++ | PG_V; | |
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; | |
37 | } | |
38 | ||
39 | mbainit(mbanum) | |
40 | int mbanum; | |
41 | { | |
42 | register struct mba_regs *mba = mbaddr[mbanum]; | |
43 | ||
44 | /* SHOULD BADADDR IT */ | |
45 | if (mbaact & (1<<mbanum)) | |
46 | return; | |
47 | mba->mba_cr = MBCR_INIT; | |
48 | mbaact |= 1<<mbanum; | |
49 | } |