1*10332Shelge /* mba.c 4.7 83/01/16 */ 2323Sbill 39806Ssam #include "../machine/pte.h" 49806Ssam 5323Sbill #include "../h/param.h" 6323Sbill #include "../h/inode.h" 77446Sroot #include "../h/fs.h" 8323Sbill #include "../h/vm.h" 99186Ssam 109186Ssam #include "../vax/mtpr.h" 119186Ssam #include "../vaxmba/mbareg.h" 12*10332Shelge #include "../vaxmba/hpreg.h" 139186Ssam 14323Sbill #include "saio.h" 153262Swnj #include "savax.h" 16323Sbill 173262Swnj mbastart(io, func) 183262Swnj register struct iob *io; 193262Swnj int func; 20323Sbill { 213262Swnj struct mba_regs *mba = mbamba(io->i_unit); 223262Swnj struct mba_drv *drv = mbadrv(io->i_unit); 233262Swnj register struct pte *pte = mba->mba_map; 24323Sbill int npf; 25323Sbill unsigned v; 26323Sbill int o; 27323Sbill int vaddr; 28323Sbill 29323Sbill v = btop(io->i_ma); 30323Sbill o = (int)io->i_ma & PGOFSET; 31323Sbill npf = btoc(io->i_cc + o); 323262Swnj vaddr = o; 33323Sbill while (--npf >= 0) 34323Sbill *(int *)pte++ = v++ | PG_V; 353262Swnj mba->mba_sr = -1; 363262Swnj mba->mba_bcr = -io->i_cc; 373262Swnj mba->mba_var = vaddr; 38*10332Shelge switch (io->i_flgs & F_TYPEMASK) { 39*10332Shelge 40*10332Shelge case F_RDDATA: /* standard read */ 41*10332Shelge drv->mbd_cs1 = MB_RCOM|MB_GO; 42*10332Shelge return(0); 43*10332Shelge 44*10332Shelge case F_WRDATA: /* standard write */ 45*10332Shelge drv->mbd_cs1 = MB_WCOM|MB_GO; 46*10332Shelge return(0); 47*10332Shelge 48*10332Shelge /* the following commands apply to disks only */ 49*10332Shelge 50*10332Shelge case F_HDR|F_RDDATA: 51*10332Shelge drv->mbd_cs1 = HP_RHDR|HP_GO; 52*10332Shelge break; 53*10332Shelge 54*10332Shelge case F_HDR|F_WRDATA: 55*10332Shelge drv->mbd_cs1 = HP_WHDR|HP_GO; 56*10332Shelge break; 57*10332Shelge 58*10332Shelge case F_CHECK|F_WRDATA: 59*10332Shelge case F_CHECK|F_RDDATA: 60*10332Shelge drv->mbd_cs1 = HP_WCDATA|HP_GO; 61*10332Shelge break; 62*10332Shelge 63*10332Shelge case F_HCHECK|F_WRDATA: 64*10332Shelge case F_HCHECK|F_RDDATA: 65*10332Shelge drv->mbd_cs1 = HP_WCHDR|HP_GO; 66*10332Shelge break; 67*10332Shelge 68*10332Shelge default: 69*10332Shelge error: 70*10332Shelge io->i_error = ECMD; 71*10332Shelge io->i_flgs &= ~F_TYPEMASK; 72*10332Shelge return (1); 73*10332Shelge } 74*10332Shelge 75*10332Shelge if ((drv->mbd_dt & MBDT_TAP) == 0) 76*10332Shelge return (0); 773262Swnj else 78*10332Shelge goto error; /* if not a disk : error */ 79323Sbill } 80415Sbill 81415Sbill mbainit(mbanum) 82415Sbill int mbanum; 83415Sbill { 843262Swnj register struct mba_regs *mba = mbaddr[mbanum]; 85415Sbill 863262Swnj /* SHOULD BADADDR IT */ 873262Swnj if (mbaact & (1<<mbanum)) 883262Swnj return; 893262Swnj mba->mba_cr = MBCR_INIT; 90415Sbill mbaact |= 1<<mbanum; 91415Sbill } 92