projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| e6453f14 | 1 | /* vxm.c 1.3 86/01/12 */ |
| dc2dfe78 SL |
2 | |
| 3 | #include "vx.h" | |
| 4 | #if NVX > 0 | |
| 5 | /* | |
| 6 | * VIOC-X Modem control | |
| 7 | */ | |
| 8 | ||
| e6453f14 SL |
9 | #include "param.h" |
| 10 | #include "file.h" | |
| 11 | #include "ioctl.h" | |
| 12 | #include "tty.h" | |
| 13 | #include "conf.h" | |
| 14 | ||
| 9d915fad | 15 | #include "../tahoevba/vioc.h" |
| dc2dfe78 SL |
16 | #include "vbsc.h" |
| 17 | #if NVBSC > 0 | |
| e6453f14 SL |
18 | #include "../tahoebsc/bscio.h" |
| 19 | #include "../tahoebsc/bsc.h" | |
| dc2dfe78 SL |
20 | extern char bscport[]; |
| 21 | #endif | |
| 22 | ||
| 23 | ||
| 24 | extern struct vcx vcx[] ; | |
| 25 | extern struct tty vx_tty[]; | |
| 26 | extern struct vcmds v_cmds[] ; | |
| 27 | ||
| 28 | extern int vxstart() ; | |
| 29 | extern struct vxcmd *vobtain() ; | |
| 30 | extern struct vxcmd *nextcmd() ; | |
| 31 | ||
| 32 | ||
| 33 | vcmodem(dev,flag) | |
| 34 | dev_t dev ; | |
| 35 | { | |
| 36 | struct tty *tp ; | |
| 37 | register struct vxcmd *cp ; | |
| 38 | register struct vcx *xp ; | |
| 39 | register struct vblok *kp ; | |
| 40 | register port ; | |
| 41 | ||
| 42 | port = minor(dev) ; | |
| 43 | tp = &vx_tty[port] ; | |
| 44 | port &= 017 ; | |
| 45 | xp = (struct vcx *)tp->t_addr ; | |
| 46 | cp = vobtain(xp) ; | |
| 47 | kp = VBAS(xp->v_nbr) ; | |
| 48 | ||
| 49 | /* | |
| 50 | * Issue MODEM command | |
| 51 | */ | |
| 52 | cp->cmd = MDMCTL ; | |
| 53 | cp->par[0] = (flag == VMOD_ON) ? V_ENAB : V_DISAB ; | |
| 54 | cp->par[1] = port; | |
| 9d915fad | 55 | vcmd(xp->v_nbr, (caddr_t)&cp->cmd) ; |
| dc2dfe78 SL |
56 | port -= xp->v_loport ; |
| 57 | if((kp->v_dcd >> port) & 1) { | |
| 58 | if(flag == VMOD_ON) | |
| 59 | tp->t_state |= TS_CARR_ON ; | |
| 60 | return(1) ; | |
| 61 | } | |
| 62 | return(0) ; | |
| 63 | } | |
| 64 | ||
| 65 | ||
| 66 | /* | |
| 67 | * VCMINTR called when an unsolicited interrup occurs signaling | |
| 68 | * some change of modem control state. | |
| 69 | */ | |
| 70 | vcmintr(n) | |
| 71 | register n ; /* viocx number */ | |
| 72 | { | |
| 73 | register struct vblok *kp ; | |
| 74 | register struct tty *tp ; | |
| 75 | register port ; | |
| 76 | ||
| 77 | kp = VBAS( n ) ; | |
| 78 | port = kp->v_usdata[0] & 017 ; | |
| 79 | tp = &vx_tty[port+n*16] ; | |
| 80 | ||
| 81 | #if NVBSC > 0 | |
| 82 | /* | |
| 83 | * Check for change in DSR for BISYNC port. | |
| 84 | */ | |
| 85 | if ((kp->v_ustat & DSR_CHG) && (bscport[port+n*16] & BISYNC)) { | |
| 86 | register struct vcx *xp ; | |
| 87 | register struct bsc *bp ; | |
| 88 | extern struct bsc bsc[] ; | |
| 89 | ||
| 90 | xp = (struct vcx *)tp->t_addr ; | |
| 91 | bp = &bsc[minor(tp->t_dev)] ; | |
| 92 | bp->b_hlflgs &= ~BSC_DSR ; | |
| 93 | if (kp->v_ustat & DSR_ON) | |
| 94 | bp->b_hlflgs |= BSC_DSR ; | |
| 95 | /*debug*/printf("BSC DSR Chg: %x\n", kp->v_ustat & DSR_CHG); | |
| 96 | } | |
| 97 | if (bscport[port+n*16] & BISYNC) return; | |
| 98 | #endif | |
| 99 | if((kp->v_ustat & DCD_ON) && ((tp->t_state & TS_CARR_ON) == 0) ) { | |
| 100 | tp->t_state |= TS_CARR_ON ; | |
| 101 | wakeup((caddr_t)&tp->t_canq) ; | |
| 102 | return ; | |
| 103 | } | |
| 104 | ||
| 105 | if((kp->v_ustat & DCD_OFF) && (tp->t_state & TS_CARR_ON)) { | |
| 106 | tp->t_state &= ~TS_CARR_ON ; | |
| 107 | if(tp->t_state & TS_ISOPEN) { | |
| 108 | register struct vcx *xp ; | |
| 109 | register struct vcmds *cp ; | |
| 110 | register struct vxcmd *cmdp ; | |
| 111 | ||
| 112 | ttyflush(tp, FREAD|FWRITE); | |
| 113 | /* clear all pending trnansmits */ | |
| 114 | xp = &vcx[n]; | |
| 115 | if(tp->t_state&(TS_BUSY|TS_FLUSH) && xp->v_vers==V_NEW) { | |
| 116 | int i, cmdfound = 0; | |
| 117 | cp = &v_cmds[n]; | |
| 118 | for(i = cp->v_empty; i!=cp->v_fill; ) { | |
| 119 | cmdp = (struct vxcmd *)((long *)cp->cmdbuf[i]-1); | |
| 120 | if((cmdp->cmd==XMITDTA || cmdp->cmd==XMITIMM) | |
| 121 | && ((struct vxmit *)cmdp->par)->line == port) { | |
| 122 | cmdfound++; | |
| 123 | cmdp->cmd = FDTATOX ; | |
| 124 | cmdp->par[1] = port ; | |
| 125 | } | |
| 126 | if(++i >= VC_CMDBUFL) | |
| 127 | i = 0; | |
| 128 | } | |
| 129 | if(cmdfound) | |
| 130 | tp->t_state &= ~(TS_BUSY|TS_FLUSH); | |
| 131 | /* cmd is already in vioc, have to flush it */ | |
| 132 | else { | |
| 133 | cmdp = vobtain(xp); | |
| 134 | cmdp->cmd = FDTATOX ; | |
| 135 | cmdp->par[1] = port ; | |
| 9d915fad | 136 | vcmd(n, (caddr_t)&cmdp->cmd); |
| dc2dfe78 SL |
137 | } |
| 138 | } | |
| 139 | if((tp->t_flags&NOHANG)==0) { | |
| 140 | gsignal(tp->t_pgrp, SIGHUP) ; | |
| 141 | gsignal(tp->t_pgrp, SIGCONT); | |
| 142 | } | |
| 143 | } | |
| 144 | return ; | |
| 145 | } | |
| 146 | ||
| 147 | if((kp->v_ustat & BRK_CHR) && (tp->t_state & TS_ISOPEN) ) { | |
| 148 | (*linesw[tp->t_line].l_rint)(tp->t_intrc & 0377, tp) ; | |
| 149 | return ; | |
| 150 | } | |
| 151 | } | |
| 152 | #endif |