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| Commit | Line | Data |
|---|---|---|
| 92e67171 | 1 | /* mba.c 6.1 83/07/29 */ |
| faeec66d SL |
2 | |
| 3 | #include "../machine/pte.h" | |
| 6810489f BJ |
4 | |
| 5 | #include "../h/param.h" | |
| 6 | #include "../h/inode.h" | |
| b5d17f4d | 7 | #include "../h/fs.h" |
| 6810489f | 8 | #include "../h/vm.h" |
| a031a31b SL |
9 | |
| 10 | #include "../vax/mtpr.h" | |
| 11 | #include "../vaxmba/mbareg.h" | |
| 514820ed | 12 | #include "../vaxmba/hpreg.h" |
| a031a31b | 13 | |
| 6810489f | 14 | #include "saio.h" |
| 99fe9747 | 15 | #include "savax.h" |
| 6810489f | 16 | |
| 99fe9747 BJ |
17 | mbastart(io, func) |
| 18 | register struct iob *io; | |
| 19 | int func; | |
| 6810489f | 20 | { |
| 99fe9747 BJ |
21 | struct mba_regs *mba = mbamba(io->i_unit); |
| 22 | struct mba_drv *drv = mbadrv(io->i_unit); | |
| 23 | register struct pte *pte = mba->mba_map; | |
| 6810489f BJ |
24 | int npf; |
| 25 | unsigned v; | |
| 6810489f BJ |
26 | int o; |
| 27 | int vaddr; | |
| 6810489f | 28 | |
| 6810489f BJ |
29 | v = btop(io->i_ma); |
| 30 | o = (int)io->i_ma & PGOFSET; | |
| 31 | npf = btoc(io->i_cc + o); | |
| 99fe9747 | 32 | vaddr = o; |
| 6810489f BJ |
33 | while (--npf >= 0) |
| 34 | *(int *)pte++ = v++ | PG_V; | |
| 99fe9747 BJ |
35 | mba->mba_sr = -1; |
| 36 | mba->mba_bcr = -io->i_cc; | |
| 37 | mba->mba_var = vaddr; | |
| 5b34c67b | 38 | if (io->i_flgs&F_SSI) |
| ac670a09 | 39 | drv->mbd_of |= HPOF_SSEI; |
| 514820ed HS |
40 | switch (io->i_flgs & F_TYPEMASK) { |
| 41 | ||
| 42 | case F_RDDATA: /* standard read */ | |
| 43 | drv->mbd_cs1 = MB_RCOM|MB_GO; | |
| 5f8a4923 | 44 | mbawait(io); |
| 514820ed HS |
45 | return(0); |
| 46 | ||
| 47 | case F_WRDATA: /* standard write */ | |
| 48 | drv->mbd_cs1 = MB_WCOM|MB_GO; | |
| 5f8a4923 | 49 | mbawait(io); |
| 514820ed HS |
50 | return(0); |
| 51 | ||
| 52 | /* the following commands apply to disks only */ | |
| 53 | ||
| 54 | case F_HDR|F_RDDATA: | |
| 55 | drv->mbd_cs1 = HP_RHDR|HP_GO; | |
| 56 | break; | |
| 57 | ||
| 58 | case F_HDR|F_WRDATA: | |
| 59 | drv->mbd_cs1 = HP_WHDR|HP_GO; | |
| 60 | break; | |
| 61 | ||
| 62 | case F_CHECK|F_WRDATA: | |
| 63 | case F_CHECK|F_RDDATA: | |
| 64 | drv->mbd_cs1 = HP_WCDATA|HP_GO; | |
| 65 | break; | |
| 66 | ||
| 67 | case F_HCHECK|F_WRDATA: | |
| 68 | case F_HCHECK|F_RDDATA: | |
| 69 | drv->mbd_cs1 = HP_WCHDR|HP_GO; | |
| 70 | break; | |
| 71 | ||
| 72 | default: | |
| 5b34c67b | 73 | goto error; |
| 514820ed | 74 | } |
| 5f8a4923 | 75 | mbawait(io); |
| 514820ed HS |
76 | if ((drv->mbd_dt & MBDT_TAP) == 0) |
| 77 | return (0); | |
| 5b34c67b SL |
78 | error: |
| 79 | io->i_error = ECMD; | |
| 80 | io->i_flgs &= ~F_TYPEMASK; | |
| 81 | return (1); | |
| 6810489f | 82 | } |
| 56a904c5 | 83 | |
| 5f8a4923 SL |
84 | mbawait(io) |
| 85 | register struct iob *io; | |
| 86 | { | |
| 87 | struct mba_regs *mba = mbamba(io->i_unit); | |
| 88 | struct mba_drv *drv = mbadrv(io->i_unit); | |
| 89 | ||
| 90 | while (mba->mba_sr & MBSR_DTBUSY) | |
| 91 | DELAY(100); | |
| 92 | } | |
| 93 | ||
| 56a904c5 BJ |
94 | mbainit(mbanum) |
| 95 | int mbanum; | |
| 96 | { | |
| 99fe9747 | 97 | register struct mba_regs *mba = mbaddr[mbanum]; |
| 56a904c5 | 98 | |
| 99fe9747 BJ |
99 | /* SHOULD BADADDR IT */ |
| 100 | if (mbaact & (1<<mbanum)) | |
| 101 | return; | |
| 102 | mba->mba_cr = MBCR_INIT; | |
| 56a904c5 BJ |
103 | mbaact |= 1<<mbanum; |
| 104 | } |