| 1 | /* vx.c 1.7 86/01/21 */ |
| 2 | |
| 3 | #include "vx.h" |
| 4 | #if NVX > 0 |
| 5 | /* |
| 6 | * VIOC-X driver |
| 7 | */ |
| 8 | #ifdef VXPERF |
| 9 | #define DOSCOPE |
| 10 | #endif |
| 11 | |
| 12 | #include "../tahoe/pte.h" |
| 13 | |
| 14 | #include "param.h" |
| 15 | #include "ioctl.h" |
| 16 | #include "tty.h" |
| 17 | #include "dir.h" |
| 18 | #include "user.h" |
| 19 | #include "map.h" |
| 20 | #include "buf.h" |
| 21 | #include "conf.h" |
| 22 | #include "file.h" |
| 23 | #include "uio.h" |
| 24 | #include "proc.h" |
| 25 | #include "vm.h" |
| 26 | #include "kernel.h" |
| 27 | |
| 28 | #include "../tahoevba/vbavar.h" |
| 29 | #include "../tahoevba/vxreg.h" |
| 30 | #include "../tahoevba/scope.h" |
| 31 | #include "vbsc.h" |
| 32 | #if NVBSC > 0 |
| 33 | #include "../tahoebsc/bscio.h" |
| 34 | #include "../tahoebsc/bsc.h" |
| 35 | #ifdef BSC_DEBUG |
| 36 | #include "../tahoebsc/bscdebug.h" |
| 37 | #endif |
| 38 | |
| 39 | char bscport[NVX*16]; |
| 40 | #endif |
| 41 | |
| 42 | #ifdef VX_DEBUG |
| 43 | long vxintr4 = 0; |
| 44 | #define VXERR4 1 |
| 45 | #define VXNOBUF 2 |
| 46 | long vxdebug = 0; |
| 47 | #define VXVCM 1 |
| 48 | #define VXVCC 2 |
| 49 | #define VXVCX 4 |
| 50 | #include "../tahoesna/snadebug.h" |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * Interrupt type bits passed to vinthandl(). |
| 55 | */ |
| 56 | #define CMDquals 0 /* command completed interrupt */ |
| 57 | #define RSPquals 1 /* command response interrupt */ |
| 58 | #define UNSquals 2 /* unsolicited interrupt */ |
| 59 | |
| 60 | struct tty vx_tty[NVX*16]; |
| 61 | int vxstart(), ttrstrt(); |
| 62 | struct vxcmd *vobtain(), *nextcmd(); |
| 63 | |
| 64 | /* |
| 65 | * Driver information for auto-configuration stuff. |
| 66 | */ |
| 67 | int vxprobe(), vxattach(), vxrint(); |
| 68 | struct vba_device *vxinfo[NVX]; |
| 69 | long vxstd[] = { 0 }; |
| 70 | struct vba_driver vxdriver = |
| 71 | { vxprobe, 0, vxattach, 0, vxstd, "vx", vxinfo }; |
| 72 | |
| 73 | struct vx_softc { |
| 74 | u_char vs_type; /* 0: viox-x/vioc-b, 1: vioc-bop */ |
| 75 | u_char vs_bop; /* bop board # for vioc-bop's */ |
| 76 | u_char vs_loport; /* low port nbr */ |
| 77 | u_char vs_hiport; /* high port nbr */ |
| 78 | u_short vs_nbr; /* viocx number */ |
| 79 | u_short vs_maxcmd; /* max number of concurrent cmds */ |
| 80 | u_short vs_silosiz; /* silo size */ |
| 81 | short vs_vers; /* vioc/pvioc version */ |
| 82 | #define VXV_OLD 0 /* PVIOCX | VIOCX */ |
| 83 | #define VXV_NEW 1 /* NPVIOCX | NVIOCX */ |
| 84 | short vs_xmtcnt; /* xmit commands pending */ |
| 85 | short vs_brkreq; /* send break requests pending */ |
| 86 | short vs_active; /* active port bit array or flag */ |
| 87 | short vs_state; /* controller state */ |
| 88 | #define VXS_READY 0 /* ready for commands */ |
| 89 | #define VXS_RESET 1 /* in process of reseting */ |
| 90 | caddr_t vs_mricmd; /* most recent issued cmd */ |
| 91 | u_int vs_ivec; /* interrupt vector base */ |
| 92 | struct vxcmd *vs_avail;/* next available command buffer */ |
| 93 | struct vxcmd *vs_build; |
| 94 | struct vxcmd vs_lst[NVCXBUFS]; |
| 95 | struct vcmds vs_cmds; |
| 96 | } vx_softc[NVX]; |
| 97 | |
| 98 | vxprobe(reg, vi) |
| 99 | caddr_t reg; |
| 100 | struct vba_device *vi; |
| 101 | { |
| 102 | register int br, cvec; /* must be r12, r11 */ |
| 103 | register struct vxdevice *vp = (struct vxdevice *)reg; |
| 104 | register struct vx_softc *vs; |
| 105 | |
| 106 | #ifdef lint |
| 107 | br = 0; cvec = br; br = cvec; |
| 108 | vackint(0); vunsol(0); vcmdrsp(0); vxfreset(0); |
| 109 | #endif |
| 110 | if (badaddr((caddr_t)vp, 1)) |
| 111 | return (0); |
| 112 | vp->v_fault = 0; |
| 113 | vp->v_vioc = V_BSY; |
| 114 | vp->v_hdwre = V_RESET; /* reset interrupt */ |
| 115 | DELAY(4000000); |
| 116 | if (vp->v_fault != VXF_READY) |
| 117 | return (0); |
| 118 | vs = &vx_softc[vi->ui_unit]; |
| 119 | #ifdef notdef |
| 120 | /* |
| 121 | * Align vioc interrupt vector base to 4 vector |
| 122 | * boundary and fitting in 8 bits (is this necessary, |
| 123 | * wish we had documentation). |
| 124 | */ |
| 125 | if ((vi->ui_hd->vh_lastiv -= 3) > 0xff) |
| 126 | vi->ui_hd->vh_lastiv = 0xff; |
| 127 | vs->vs_ivec = vi->ui_hd->vh_lastiv = vi->ui_hd->vh_lastiv &~ 0x3; |
| 128 | #else |
| 129 | vs->vs_ivec = 0x40+vi->ui_unit*4; |
| 130 | #endif |
| 131 | br = 0x18, cvec = vs->vs_ivec; /* XXX */ |
| 132 | return (sizeof (struct vxdevice)); |
| 133 | } |
| 134 | |
| 135 | vxattach(vi) |
| 136 | register struct vba_device *vi; |
| 137 | { |
| 138 | |
| 139 | vxinit(vi->ui_unit, (long)1); |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Open a VX line. |
| 144 | */ |
| 145 | /*ARGSUSED*/ |
| 146 | vxopen(dev, flag) |
| 147 | dev_t dev; |
| 148 | int flag; |
| 149 | { |
| 150 | register struct tty *tp; /* pointer to tty struct for port */ |
| 151 | register struct vx_softc *vs; |
| 152 | register struct vba_device *vi; |
| 153 | int unit, vx, s, error; |
| 154 | |
| 155 | unit = minor(dev); |
| 156 | vx = unit >> 4; |
| 157 | if (unit >= NVX*16 || (vi = vxinfo[vx])== 0 || vi->ui_alive == 0) |
| 158 | return (ENXIO); |
| 159 | tp = &vx_tty[unit]; |
| 160 | if (tp->t_state&TS_XCLUDE && u.u_uid != 0) |
| 161 | return (EBUSY); |
| 162 | vs = &vx_softc[vx]; |
| 163 | #ifdef notdef |
| 164 | if (unit < vs->vs_loport || vs->vs_hiport < unit) /* ??? */ |
| 165 | return (ENXIO); |
| 166 | #endif |
| 167 | tp->t_addr = (caddr_t)vs; |
| 168 | tp->t_oproc = vxstart; |
| 169 | tp->t_dev = dev; |
| 170 | s = spl8(); |
| 171 | tp->t_state |= TS_WOPEN; |
| 172 | if ((tp->t_state&TS_ISOPEN) == 0) { |
| 173 | ttychars(tp); |
| 174 | if (tp->t_ispeed == 0) { |
| 175 | tp->t_ispeed = SSPEED; |
| 176 | tp->t_ospeed = SSPEED; |
| 177 | tp->t_flags |= ODDP|EVENP|ECHO; |
| 178 | } |
| 179 | vxparam(dev); |
| 180 | } |
| 181 | if (!vcmodem(dev, VMOD_ON)) |
| 182 | while ((tp->t_state&TS_CARR_ON) == 0) |
| 183 | sleep((caddr_t)&tp->t_canq, TTIPRI); |
| 184 | error = (*linesw[tp->t_line].l_open)(dev,tp); |
| 185 | splx(s); |
| 186 | return (error); |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * Close a VX line. |
| 191 | */ |
| 192 | /*ARGSUSED*/ |
| 193 | vxclose(dev, flag) |
| 194 | dev_t dev; |
| 195 | int flag; |
| 196 | { |
| 197 | register struct tty *tp; |
| 198 | int unit, s; |
| 199 | |
| 200 | unit = minor(dev); |
| 201 | tp = &vx_tty[unit]; |
| 202 | s = spl8(); |
| 203 | (*linesw[tp->t_line].l_close)(tp); |
| 204 | if ((tp->t_state & (TS_ISOPEN|TS_HUPCLS)) == (TS_ISOPEN|TS_HUPCLS)) |
| 205 | if (!vcmodem(dev, VMOD_OFF)) |
| 206 | tp->t_state &= ~TS_CARR_ON; |
| 207 | /* wait for the last response */ |
| 208 | while (tp->t_state&TS_FLUSH) |
| 209 | sleep((caddr_t)&tp->t_state, TTOPRI); |
| 210 | ttyclose(tp); |
| 211 | splx(s); |
| 212 | } |
| 213 | |
| 214 | /* |
| 215 | * Read from a VX line. |
| 216 | */ |
| 217 | vxread(dev, uio) |
| 218 | dev_t dev; |
| 219 | struct uio *uio; |
| 220 | { |
| 221 | struct tty *tp = &vx_tty[minor(dev)]; |
| 222 | |
| 223 | return ((*linesw[tp->t_line].l_read)(tp, uio)); |
| 224 | } |
| 225 | |
| 226 | /* |
| 227 | * write on a VX line |
| 228 | */ |
| 229 | vxwrite(dev, uio) |
| 230 | dev_t dev; |
| 231 | struct uio *uio; |
| 232 | { |
| 233 | register struct tty *tp = &vx_tty[minor(dev)]; |
| 234 | |
| 235 | return ((*linesw[tp->t_line].l_write)(tp, uio)); |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * VIOCX unsolicited interrupt. |
| 240 | */ |
| 241 | vxrint(vx) |
| 242 | register vx; |
| 243 | { |
| 244 | register struct tty *tp, *tp0; |
| 245 | register struct vxdevice *addr; |
| 246 | register struct vx_softc *vs; |
| 247 | struct vba_device *vi; |
| 248 | register int nc, c; |
| 249 | register struct silo { |
| 250 | char data, port; |
| 251 | } *sp; |
| 252 | short *osp; |
| 253 | int overrun = 0; |
| 254 | |
| 255 | vi = vxinfo[vx]; |
| 256 | if (vi == 0 || vi->ui_alive == 0) |
| 257 | return; |
| 258 | addr = (struct vxdevice *)vi->ui_addr; |
| 259 | switch (addr->v_uqual&037) { |
| 260 | case 0: |
| 261 | break; |
| 262 | case 2: |
| 263 | printf("vx%d: vc proc err, ustat %x\n", addr->v_ustat); |
| 264 | vxstreset(vx); |
| 265 | return (0); |
| 266 | case 3: |
| 267 | vcmintr(vx); |
| 268 | return (1); |
| 269 | case 4: |
| 270 | return (1); |
| 271 | default: |
| 272 | printf("vx%d: vc uqual err, uqual %x\n", addr->v_uqual); |
| 273 | vxstreset(vx); |
| 274 | return (0); |
| 275 | } |
| 276 | vs = &vx_softc[vx]; |
| 277 | if (vs->vs_vers == VXV_NEW) |
| 278 | sp = (struct silo *)((caddr_t)addr + *(short *)addr->v_usdata); |
| 279 | else |
| 280 | sp = (struct silo *)((caddr_t)addr+VX_SILO+(addr->v_usdata[0]<<6)); |
| 281 | nc = *(osp = (short *)sp); |
| 282 | if (nc == 0) |
| 283 | return (1); |
| 284 | if (vs->vs_vers == VXV_NEW && nc > vs->vs_silosiz) { |
| 285 | printf("vx%d: %d exceeds silo size\n", nc); |
| 286 | nc = vs->vs_silosiz; |
| 287 | } |
| 288 | tp0 = &vx_tty[vx*16]; |
| 289 | sp = (struct silo *)(((short *)sp)+1); |
| 290 | for (; nc > 0; nc--, sp = (struct silo *)(((short *)sp)+1)) { |
| 291 | c = sp->port & 017; |
| 292 | if (vs->vs_loport > c || c > vs->vs_hiport) |
| 293 | continue; |
| 294 | tp = tp0 + c; |
| 295 | if( (tp->t_state&TS_ISOPEN) == 0) { |
| 296 | wakeup((caddr_t)&tp->t_rawq); |
| 297 | continue; |
| 298 | } |
| 299 | c = sp->data; |
| 300 | if ((sp->port&VX_RO) == VX_RO && !overrun) { |
| 301 | printf("vx%d: receiver overrun\n", vi->ui_unit); |
| 302 | overrun = 1; |
| 303 | continue; |
| 304 | } |
| 305 | if (sp->port&VX_PE) |
| 306 | if ((tp->t_flags&(EVENP|ODDP)) == EVENP || |
| 307 | (tp->t_flags&(EVENP|ODDP)) == ODDP) |
| 308 | continue; |
| 309 | if (sp->port&VX_FE) { |
| 310 | /* |
| 311 | * At framing error (break) generate |
| 312 | * a null (in raw mode, for getty), or a |
| 313 | * interrupt (in cooked/cbreak mode). |
| 314 | */ |
| 315 | if (tp->t_flags&RAW) |
| 316 | c = 0; |
| 317 | else |
| 318 | c = tp->t_intrc; |
| 319 | } |
| 320 | (*linesw[tp->t_line].l_rint)(c, tp); |
| 321 | } |
| 322 | *osp = 0; |
| 323 | return (1); |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Ioctl for VX. |
| 328 | */ |
| 329 | vxioctl(dev, cmd, data, flag) |
| 330 | dev_t dev; |
| 331 | caddr_t data; |
| 332 | { |
| 333 | register struct tty *tp; |
| 334 | int error; |
| 335 | |
| 336 | tp = &vx_tty[minor(dev)]; |
| 337 | error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag); |
| 338 | if (error == 0) |
| 339 | return (error); |
| 340 | error = ttioctl(tp, cmd, data, flag); |
| 341 | if (error >= 0) { |
| 342 | if (cmd == TIOCSETP || cmd == TIOCSETN) |
| 343 | vxparam(dev); |
| 344 | return (error); |
| 345 | } |
| 346 | return (ENOTTY); |
| 347 | } |
| 348 | |
| 349 | vxparam(dev) |
| 350 | dev_t dev; |
| 351 | { |
| 352 | |
| 353 | vxcparam(dev, 1); |
| 354 | } |
| 355 | |
| 356 | /* |
| 357 | * Set parameters from open or stty into the VX hardware |
| 358 | * registers. |
| 359 | */ |
| 360 | vxcparam(dev, wait) |
| 361 | dev_t dev; |
| 362 | int wait; |
| 363 | { |
| 364 | register struct tty *tp; |
| 365 | register struct vx_softc *vs; |
| 366 | register struct vxcmd *cp; |
| 367 | int s, unit = minor(dev); |
| 368 | |
| 369 | tp = &vx_tty[unit]; |
| 370 | vs = (struct vx_softc *)tp->t_addr; |
| 371 | cp = vobtain(vs); |
| 372 | s = spl8(); |
| 373 | /* |
| 374 | * Construct ``load parameters'' command block |
| 375 | * to setup baud rates, xon-xoff chars, parity, |
| 376 | * and stop bits for the specified port. |
| 377 | */ |
| 378 | cp->cmd = VXC_LPARAX; |
| 379 | cp->par[1] = unit & 017; /* port number */ |
| 380 | cp->par[2] = (tp->t_flags&RAW) ? 0 : tp->t_startc; |
| 381 | cp->par[3] = (tp->t_flags&RAW) ? 0 : tp->t_stopc; |
| 382 | if (tp->t_flags&(RAW|LITOUT) || |
| 383 | (tp->t_flags&(EVENP|ODDP)) == (EVENP|ODDP)) { |
| 384 | cp->par[4] = 0xc0; /* 8 bits of data */ |
| 385 | cp->par[7] = 0; /* no parity */ |
| 386 | } else { |
| 387 | cp->par[4] = 0x40; /* 7 bits of data */ |
| 388 | if ((tp->t_flags&(EVENP|ODDP)) == ODDP) |
| 389 | cp->par[7] = 1; /* odd parity */ |
| 390 | else if ((tp->t_flags&(EVENP|ODDP)) == EVENP) |
| 391 | cp->par[7] = 3; /* even parity */ |
| 392 | else |
| 393 | cp->par[7] = 0; /* no parity */ |
| 394 | } |
| 395 | cp->par[5] = 0x4; /* 1 stop bit - XXX */ |
| 396 | cp->par[6] = tp->t_ospeed; |
| 397 | if (vcmd(vs->vs_nbr, (caddr_t)&cp->cmd) && wait) |
| 398 | sleep((caddr_t)cp,TTIPRI); |
| 399 | splx(s); |
| 400 | } |
| 401 | |
| 402 | /* |
| 403 | * VIOCX command response interrupt. |
| 404 | * For transmission, restart output to any active port. |
| 405 | * For all other commands, just clean up. |
| 406 | */ |
| 407 | vxxint(vx, cp) |
| 408 | register int vx; |
| 409 | register struct vxcmd *cp; |
| 410 | { |
| 411 | register struct vxmit *vp, *pvp; |
| 412 | register struct tty *tp, *tp0; |
| 413 | register struct vx_softc *vs; |
| 414 | register struct tty *hp; |
| 415 | |
| 416 | vs = &vx_softc[vx]; |
| 417 | cp = (struct vxcmd *)((long *)cp-1); |
| 418 | #if NVBSC > 0 |
| 419 | if (cp->cmd == VXC_MDMCTL1 || cp->cmd == VXC_HUNTMD1 || |
| 420 | cp->cmd == VXC_LPARAX1) { |
| 421 | vrelease(vs, cp); |
| 422 | wakeup((caddr_t)cp); |
| 423 | return; |
| 424 | } |
| 425 | #endif |
| 426 | switch (cp->cmd&0xff00) { |
| 427 | |
| 428 | case VXC_LIDENT: /* initialization complete */ |
| 429 | if (vs->vs_state == VXS_RESET) { |
| 430 | vxfnreset(vx, cp); |
| 431 | vinthandl(vx, ((V_BSY|RSPquals) << 8)|V_INTR); |
| 432 | } |
| 433 | cp->cmd++; |
| 434 | return; |
| 435 | |
| 436 | case VXC_XMITDTA: |
| 437 | case VXC_XMITIMM: |
| 438 | break; |
| 439 | |
| 440 | case VXC_LPARAX: |
| 441 | wakeup((caddr_t)cp); |
| 442 | /* fall thru... */ |
| 443 | default: /* VXC_MDMCTL or VXC_FDTATOX */ |
| 444 | vrelease(vs, cp); |
| 445 | if (vs->vs_state == VXS_RESET) |
| 446 | vinthandl(vx, ((V_BSY|RSPquals) << 8)|V_INTR); |
| 447 | return; |
| 448 | } |
| 449 | tp0 = &vx_tty[vx*16]; |
| 450 | vp = (struct vxmit *)(cp->par + (cp->cmd & 07)*sizeof (struct vxmit)); |
| 451 | for (; vp >= (struct vxmit *)cp->par; vp--) { |
| 452 | tp = tp0 + (vp->line & 017); |
| 453 | #if NVBSC > 0 |
| 454 | if (tp->t_line == LDISP) { |
| 455 | vrelease(xp, cp); |
| 456 | bsctxd(vp->line & 017); |
| 457 | return; |
| 458 | } |
| 459 | #endif |
| 460 | pvp = vp; |
| 461 | tp->t_state &= ~TS_BUSY; |
| 462 | if (tp->t_state & TS_FLUSH) { |
| 463 | tp->t_state &= ~TS_FLUSH; |
| 464 | wakeup((caddr_t)&tp->t_state); |
| 465 | } else |
| 466 | ndflush(&tp->t_outq, vp->bcount+1); |
| 467 | } |
| 468 | vs->vs_xmtcnt--; |
| 469 | vrelease(vs, cp); |
| 470 | if (vs->vs_vers == VXV_NEW) { |
| 471 | vp = pvp; |
| 472 | vs->vs_active |= 1 << ((vp->line & 017) - vs->vs_loport); |
| 473 | if (vxstart(tp) && (cp = nextcmd(vs)) != NULL) { |
| 474 | vs->vs_xmtcnt++; |
| 475 | vcmd(vx, (caddr_t)&cp->cmd); |
| 476 | return; |
| 477 | } |
| 478 | vs->vs_active &= ~(1 << ((vp->line & 017) - vs->vs_loport)); |
| 479 | } else { |
| 480 | vs->vs_active = -1; |
| 481 | tp0 = &vx_tty[vx*16 + vs->vs_hiport]; |
| 482 | for(tp = &vx_tty[vx*16 + vs->vs_loport]; tp <= tp0; tp++) |
| 483 | if (vxstart(tp) && (cp = nextcmd(vs)) != NULL) { |
| 484 | vs->vs_xmtcnt++; |
| 485 | vcmd(vx, (caddr_t)&cp->cmd); |
| 486 | } |
| 487 | if ((cp = nextcmd(vs)) != NULL) { /* command to send? */ |
| 488 | vs->vs_xmtcnt++; |
| 489 | vcmd(vx, (caddr_t)&cp->cmd); |
| 490 | } |
| 491 | vs->vs_active = 0; |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | /* |
| 496 | * Force out partial XMIT command after timeout |
| 497 | */ |
| 498 | vxforce(vs) |
| 499 | register struct vx_softc *vs; |
| 500 | { |
| 501 | register struct vxcmd *cp; |
| 502 | int s; |
| 503 | |
| 504 | s = spl8(); |
| 505 | if ((cp = nextcmd(vs)) != NULL) { |
| 506 | vs->vs_xmtcnt++; |
| 507 | vcmd(vs->vs_nbr, (caddr_t)&cp->cmd); |
| 508 | } |
| 509 | splx(s); |
| 510 | } |
| 511 | |
| 512 | /* |
| 513 | * Start (restart) transmission on the given VX line. |
| 514 | */ |
| 515 | vxstart(tp) |
| 516 | register struct tty *tp; |
| 517 | { |
| 518 | register short n; |
| 519 | register struct vx_softc *vs; |
| 520 | register full = 0; |
| 521 | int s, port; |
| 522 | |
| 523 | s = spl8(); |
| 524 | port = minor(tp->t_dev) & 017; |
| 525 | vs = (struct vx_softc *)tp->t_addr; |
| 526 | if ((tp->t_state&(TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) == 0) { |
| 527 | if (tp->t_outq.c_cc <= TTLOWAT(tp)) { |
| 528 | if (tp->t_state&TS_ASLEEP) { |
| 529 | tp->t_state &= ~TS_ASLEEP; |
| 530 | wakeup((caddr_t)&tp->t_outq); |
| 531 | } |
| 532 | if (tp->t_wsel) { |
| 533 | selwakeup(tp->t_wsel, tp->t_state & TS_WCOLL); |
| 534 | tp->t_wsel = 0; |
| 535 | tp->t_state &= ~TS_WCOLL; |
| 536 | } |
| 537 | } |
| 538 | if (tp->t_outq.c_cc == 0) { |
| 539 | splx(s); |
| 540 | return (0); |
| 541 | } |
| 542 | scope_out(3); |
| 543 | if ((tp->t_flags&(RAW|LITOUT)) == 0) |
| 544 | full = 0200; |
| 545 | if ((n = ndqb(&tp->t_outq, full)) == 0) { |
| 546 | if (full) { |
| 547 | n = getc(&tp->t_outq); |
| 548 | timeout(ttrstrt, (caddr_t)tp, (n&0177)+6); |
| 549 | tp->t_state |= TS_TIMEOUT; |
| 550 | full = 0; |
| 551 | } |
| 552 | } else { |
| 553 | char *cp = (char *)tp->t_outq.c_cf; |
| 554 | |
| 555 | tp->t_state |= TS_BUSY; |
| 556 | full = vsetq(vs, port, cp, n); |
| 557 | /* |
| 558 | * If the port is not currently active, try to |
| 559 | * send the data. We send it immediately if the |
| 560 | * command buffer is full, or if we've nothing |
| 561 | * currently outstanding. If we don't send it, |
| 562 | * set a timeout to force the data to be sent soon. |
| 563 | */ |
| 564 | if ((vs->vs_active & (1 << (port-vs->vs_loport))) == 0) |
| 565 | if (full || vs->vs_xmtcnt == 0) { |
| 566 | cp = (char *)&nextcmd(vs)->cmd; |
| 567 | vs->vs_xmtcnt++; |
| 568 | vcmd(vs->vs_nbr, cp); |
| 569 | } else |
| 570 | timeout(vxforce, (caddr_t)vs, 3); |
| 571 | } |
| 572 | } |
| 573 | splx(s); |
| 574 | return (full); /* indicate if max commands or not */ |
| 575 | } |
| 576 | |
| 577 | /* |
| 578 | * Stop output on a line. |
| 579 | */ |
| 580 | vxstop(tp) |
| 581 | register struct tty *tp; |
| 582 | { |
| 583 | int s; |
| 584 | |
| 585 | s = spl8(); |
| 586 | if (tp->t_state&TS_BUSY) |
| 587 | if ((tp->t_state&TS_TTSTOP) == 0) |
| 588 | tp->t_state |= TS_FLUSH; |
| 589 | splx(s); |
| 590 | } |
| 591 | |
| 592 | static int vxbbno = -1; |
| 593 | /* |
| 594 | * VIOCX Initialization. Makes free lists of command buffers. |
| 595 | * Resets all viocx's. Issues a LIDENT command to each |
| 596 | * viocx to establish interrupt vectors and logical port numbers. |
| 597 | */ |
| 598 | vxinit(vx, wait) |
| 599 | register int vx; |
| 600 | int wait; |
| 601 | { |
| 602 | register struct vx_softc *vs; |
| 603 | register struct vxdevice *addr; |
| 604 | register struct vxcmd *cp; |
| 605 | register char *resp; |
| 606 | register int j; |
| 607 | char type; |
| 608 | |
| 609 | vs = &vx_softc[vx]; |
| 610 | vs->vs_type = 0; /* vioc-x by default */ |
| 611 | addr = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 612 | type = addr->v_ident; |
| 613 | vs->vs_vers = (type&VXT_NEW) ? VXV_NEW : VXV_OLD; |
| 614 | if (vs->vs_vers == VXV_NEW) |
| 615 | vs->vs_silosiz = addr->v_maxsilo; |
| 616 | switch (type) { |
| 617 | |
| 618 | case VXT_VIOCX: |
| 619 | case VXT_VIOCX|VXT_NEW: |
| 620 | /* set dcd for printer ports */ |
| 621 | for (j = 0; j < 16;j++) |
| 622 | if (addr->v_portyp[j] == 4) |
| 623 | addr->v_dcd |= 1 << j; |
| 624 | break; |
| 625 | |
| 626 | case VXT_PVIOCX: |
| 627 | case VXT_PVIOCX|VXT_NEW: |
| 628 | break; |
| 629 | #if NVBSC > 0 |
| 630 | case VX_VIOCB: /* old f/w bisync */ |
| 631 | case VX_VIOCB|VXT_NEW: { /* new f/w bisync */ |
| 632 | register struct bsc *bp; |
| 633 | extern struct bsc bsc[]; |
| 634 | |
| 635 | printf("%X: %x%x %s VIOC-B, ", (long)addr, (int)addr->v_ident, |
| 636 | (int)addr->v_fault, vs->vs_vers == VXV_OLD ? "old" : "16k"); |
| 637 | for (bp = &bsc[0]; bp <= &bsc[NBSC]; bp++) |
| 638 | bp->b_devregs = (caddr_t)vs; |
| 639 | printf("%d BSC Ports initialized.\n", NBSC); |
| 640 | break; |
| 641 | if (vs->vs_vers == VXV_NEW && CBSIZE > addr->v_maxxmt) |
| 642 | printf("vxinit: Warning CBSIZE > maxxmt\n"); |
| 643 | break; |
| 644 | #endif |
| 645 | case VXT_VIOCBOP: /* VIOC-BOP */ |
| 646 | vs->vs_type = 1; |
| 647 | vs->vs_bop = ++vxbbno; |
| 648 | printf("VIOC-BOP no. %d at %x\n", vs->vs_bop, addr); |
| 649 | |
| 650 | default: |
| 651 | printf("vx%d: unknown type %x\n", vx, type); |
| 652 | return; |
| 653 | } |
| 654 | vs->vs_nbr = -1; |
| 655 | vs->vs_maxcmd = (vs->vs_vers == VXV_NEW) ? 24 : 4; |
| 656 | /* |
| 657 | * Initialize all cmd buffers by linking them |
| 658 | * into a free list. |
| 659 | */ |
| 660 | for (j = 0; j < NVCXBUFS; j++) { |
| 661 | cp = &vs->vs_lst[j]; |
| 662 | cp->c_fwd = &vs->vs_lst[j+1]; |
| 663 | } |
| 664 | vs->vs_avail = &vs->vs_lst[0]; /* set idx to 1st free buf */ |
| 665 | cp->c_fwd = (struct vxcmd *)0; /* mark last buf in free list */ |
| 666 | |
| 667 | /* |
| 668 | * Establish the interrupt vectors and define the port numbers. |
| 669 | */ |
| 670 | cp = vobtain(vs); |
| 671 | cp->cmd = VXC_LIDENT; |
| 672 | cp->par[0] = vs->vs_ivec; /* ack vector */ |
| 673 | cp->par[1] = cp->par[0]+1; /* cmd resp vector */ |
| 674 | cp->par[3] = cp->par[0]+2; /* unsol intr vector */ |
| 675 | cp->par[4] = 15; /* max ports, no longer used */ |
| 676 | cp->par[5] = 0; /* set 1st port number */ |
| 677 | vcmd(vx, (caddr_t)&cp->cmd); |
| 678 | if (!wait) |
| 679 | return; |
| 680 | for (j = 0; cp->cmd == VXC_LIDENT && j < 4000000; j++) |
| 681 | ; |
| 682 | if (j >= 4000000) |
| 683 | printf("vx%d: didn't respond to LIDENT\n", vx); |
| 684 | |
| 685 | /* calculate address of response buffer */ |
| 686 | resp = (char *)addr + (addr->v_rspoff&0x3fff); |
| 687 | if (resp[0] != 0 && (resp[0]&0177) != 3) { |
| 688 | vrelease(vs, cp); /* init failed */ |
| 689 | return; |
| 690 | } |
| 691 | vs->vs_loport = cp->par[5]; |
| 692 | vs->vs_hiport = cp->par[7]; |
| 693 | vrelease(vs, cp); |
| 694 | vs->vs_nbr = vx; /* assign board number */ |
| 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Obtain a command buffer |
| 699 | */ |
| 700 | struct vxcmd * |
| 701 | vobtain(vs) |
| 702 | register struct vx_softc *vs; |
| 703 | { |
| 704 | register struct vxcmd *p; |
| 705 | int s; |
| 706 | |
| 707 | s = spl8(); |
| 708 | p = vs->vs_avail; |
| 709 | if (p == (struct vxcmd *)0) { |
| 710 | #ifdef VX_DEBUG |
| 711 | if (vxintr4&VXNOBUF) |
| 712 | vxintr4 &= ~VXNOBUF; |
| 713 | #endif |
| 714 | printf("vx%d: no buffers\n", vs - vx_softc); |
| 715 | vxstreset(vs - vx_softc); |
| 716 | splx(s); |
| 717 | return (vobtain(vs)); |
| 718 | } |
| 719 | vs->vs_avail = vs->vs_avail->c_fwd; |
| 720 | splx(s); |
| 721 | return ((struct vxcmd *)p); |
| 722 | } |
| 723 | |
| 724 | /* |
| 725 | * Release a command buffer |
| 726 | */ |
| 727 | vrelease(vs, cp) |
| 728 | register struct vx_softc *vs; |
| 729 | register struct vxcmd *cp; |
| 730 | { |
| 731 | int s; |
| 732 | |
| 733 | #ifdef VX_DEBUG |
| 734 | if (vxintr4&VXNOBUF) |
| 735 | return; |
| 736 | #endif |
| 737 | s = spl8(); |
| 738 | cp->c_fwd = vs->vs_avail; |
| 739 | vs->vs_avail = cp; |
| 740 | splx(s); |
| 741 | } |
| 742 | |
| 743 | struct vxcmd * |
| 744 | nextcmd(vs) |
| 745 | register struct vx_softc *vs; |
| 746 | { |
| 747 | register struct vxcmd *cp; |
| 748 | int s; |
| 749 | |
| 750 | s = spl8(); |
| 751 | cp = vs->vs_build; |
| 752 | vs->vs_build = (struct vxcmd *)0; |
| 753 | splx(s); |
| 754 | return (cp); |
| 755 | } |
| 756 | |
| 757 | /* |
| 758 | * Assemble transmits into a multiple command; |
| 759 | * up to 8 transmits to 8 lines can be assembled together. |
| 760 | */ |
| 761 | vsetq(vs, line, addr, n) |
| 762 | register struct vx_softc *vs; |
| 763 | caddr_t addr; |
| 764 | { |
| 765 | register struct vxcmd *cp; |
| 766 | register struct vxmit *mp; |
| 767 | |
| 768 | /* |
| 769 | * Grab a new command buffer or append |
| 770 | * to the current one being built. |
| 771 | */ |
| 772 | cp = vs->vs_build; |
| 773 | if (cp == (struct vxcmd *)0) { |
| 774 | cp = vobtain(vs); |
| 775 | vs->vs_build = cp; |
| 776 | cp->cmd = VXC_XMITDTA; |
| 777 | } else { |
| 778 | if ((cp->cmd & 07) == 07) { |
| 779 | printf("vx%d: setq overflow\n", vs-vx_softc); |
| 780 | vxstreset(vs->vs_nbr); |
| 781 | return (0); |
| 782 | } |
| 783 | cp->cmd++; |
| 784 | } |
| 785 | /* |
| 786 | * Select the next vxmit buffer and copy the |
| 787 | * characters into the buffer (if there's room |
| 788 | * and the device supports ``immediate mode'', |
| 789 | * or store an indirect pointer to the data. |
| 790 | */ |
| 791 | mp = (struct vxmit *)(cp->par + (cp->cmd & 07)*sizeof (struct vxmit)); |
| 792 | mp->bcount = n-1; |
| 793 | mp->line = line; |
| 794 | if (vs->vs_vers == VXV_NEW && n <= sizeof (mp->ostream)) { |
| 795 | cp->cmd = VXC_XMITIMM; |
| 796 | bcopy(addr, mp->ostream, n); |
| 797 | } else { |
| 798 | /* get system address of clist block */ |
| 799 | addr = (caddr_t)vtoph((struct proc *)0, (unsigned)addr); |
| 800 | bcopy(&addr, mp->ostream, sizeof (addr)); |
| 801 | } |
| 802 | return (vs->vs_vers == VXV_NEW ? 1 : (cp->cmd&07) == 7); |
| 803 | } |
| 804 | |
| 805 | /* |
| 806 | * Write a command out to the VIOC |
| 807 | */ |
| 808 | vcmd(vx, cmdad) |
| 809 | register int vx; |
| 810 | register caddr_t cmdad; |
| 811 | { |
| 812 | register struct vcmds *cp; |
| 813 | register struct vx_softc *vs; |
| 814 | int s; |
| 815 | |
| 816 | s = spl8(); |
| 817 | vs = &vx_softc[vx]; |
| 818 | /* |
| 819 | * When the vioc is resetting, don't process |
| 820 | * anything other than VXC_LIDENT commands. |
| 821 | */ |
| 822 | if (vs->vs_state == VXS_RESET && cmdad != NULL) { |
| 823 | struct vxcmd *vcp = (struct vxcmd *)(cmdad-sizeof (vcp->c_fwd)); |
| 824 | |
| 825 | if (vcp->cmd != VXC_LIDENT) { |
| 826 | vrelease(vs, vcp); |
| 827 | return (0); |
| 828 | } |
| 829 | } |
| 830 | cp = &vs->vs_cmds; |
| 831 | if (cmdad != (caddr_t)0) { |
| 832 | cp->cmdbuf[cp->v_fill] = cmdad; |
| 833 | if (++cp->v_fill >= VC_CMDBUFL) |
| 834 | cp->v_fill = 0; |
| 835 | if (cp->v_fill == cp->v_empty) { |
| 836 | printf("vx%d: cmd q overflow\n", vx); |
| 837 | vxstreset(vx); |
| 838 | splx(s); |
| 839 | return (0); |
| 840 | } |
| 841 | cp->v_cmdsem++; |
| 842 | } |
| 843 | if (cp->v_cmdsem && cp->v_curcnt < vs->vs_maxcmd) { |
| 844 | cp->v_cmdsem--; |
| 845 | cp->v_curcnt++; |
| 846 | vinthandl(vx, ((V_BSY|CMDquals) << 8)|V_INTR); |
| 847 | } |
| 848 | splx(s); |
| 849 | return (1); |
| 850 | } |
| 851 | |
| 852 | /* |
| 853 | * VIOC acknowledge interrupt. The VIOC has received the new |
| 854 | * command. If no errors, the new command becomes one of 16 (max) |
| 855 | * current commands being executed. |
| 856 | */ |
| 857 | vackint(vx) |
| 858 | register vx; |
| 859 | { |
| 860 | register struct vxdevice *vp; |
| 861 | register struct vcmds *cp; |
| 862 | struct vx_softc *vs; |
| 863 | int s; |
| 864 | |
| 865 | scope_out(5); |
| 866 | vs = &vx_softc[vx]; |
| 867 | if (vs->vs_type) { /* Its a BOP */ |
| 868 | #ifdef SNA_DEBUG |
| 869 | extern vbrall(); |
| 870 | |
| 871 | if (snadebug & SVIOC) |
| 872 | printf("vx%d: vack interrupt from BOP\n", vx); |
| 873 | vbrall(vx); /* Int. from BOP, port 0 */ |
| 874 | #endif |
| 875 | return; |
| 876 | } |
| 877 | s = spl8(); |
| 878 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 879 | cp = &vs->vs_cmds; |
| 880 | if (vp->v_vcid&V_ERR) { |
| 881 | register char *resp; |
| 882 | register i; |
| 883 | |
| 884 | printf("vx%d INTR ERR type %x v_dcd %x\n", vx, |
| 885 | vp->v_vcid & 07, vp->v_dcd & 0xff); |
| 886 | resp = (char *)vs->vs_mricmd; |
| 887 | for (i = 0; i < 16; i++) |
| 888 | printf("%x ", resp[i]&0xff); |
| 889 | printf("\n"); |
| 890 | splx(s); |
| 891 | vxstreset(vx); |
| 892 | return; |
| 893 | } |
| 894 | if ((vp->v_hdwre&017) == CMDquals) { |
| 895 | #ifdef VX_DEBUG |
| 896 | if (vxintr4 & VXERR4) { /* causes VIOC INTR ERR 4 */ |
| 897 | struct vxcmd *cp1, *cp0; |
| 898 | |
| 899 | cp0 = (struct vxcmd *) |
| 900 | ((caddr_t)cp->cmdbuf[cp->v_empty]-sizeof (cp0->c_fwd)); |
| 901 | if (cp0->cmd == VXC_XMITDTA || cp0->cmd == VXC_XMITIMM) { |
| 902 | cp1 = vobtain(vs); |
| 903 | *cp1 = *cp0; |
| 904 | vxintr4 &= ~VXERR4; |
| 905 | (void) vcmd(vx, &cp1->cmd); |
| 906 | } |
| 907 | } |
| 908 | #endif |
| 909 | cp->v_curcmd[vp->v_vcid & VCMDLEN-1] = cp->cmdbuf[cp->v_empty]; |
| 910 | if (++cp->v_empty >= VC_CMDBUFL) |
| 911 | cp->v_empty = 0; |
| 912 | } |
| 913 | if (++cp->v_itrempt >= VC_IQLEN) |
| 914 | cp->v_itrempt = 0; |
| 915 | vintempt(vx); |
| 916 | splx(s); |
| 917 | (void) vcmd(vx, (caddr_t)0); /* queue next cmd, if any */ |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Command Response interrupt. The Vioc has completed |
| 922 | * a command. The command may now be returned to |
| 923 | * the appropriate device driver. |
| 924 | */ |
| 925 | vcmdrsp(vx) |
| 926 | register vx; |
| 927 | { |
| 928 | register struct vxdevice *vp; |
| 929 | register struct vcmds *cp; |
| 930 | register caddr_t cmd; |
| 931 | register struct vx_softc *vs; |
| 932 | register char *resp; |
| 933 | register k; |
| 934 | register int s; |
| 935 | |
| 936 | scope_out(6); |
| 937 | vs = &vx_softc[vx]; |
| 938 | if (vs->vs_type) { /* Its a BOP */ |
| 939 | printf("vx%d: vcmdrsp interrupt\n", vx); |
| 940 | return; |
| 941 | } |
| 942 | s = spl8(); |
| 943 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 944 | cp = &vs->vs_cmds; |
| 945 | resp = (char *)vp + (vp->v_rspoff&0x7fff); |
| 946 | if (((k = resp[1])&V_UNBSY) == 0) { |
| 947 | printf("vx%d: cmdresp debug\n", vx); |
| 948 | splx(s); |
| 949 | vxstreset(vx); |
| 950 | return; |
| 951 | } |
| 952 | k &= VCMDLEN-1; |
| 953 | cmd = cp->v_curcmd[k]; |
| 954 | cp->v_curcmd[k] = (caddr_t)0; |
| 955 | cp->v_curcnt--; |
| 956 | k = *((short *)&resp[4]); /* cmd operation code */ |
| 957 | if ((k&0xff00) == VXC_LIDENT) /* want hiport number */ |
| 958 | for (k = 0; k < VRESPLEN; k++) |
| 959 | cmd[k] = resp[k+4]; |
| 960 | resp[1] = 0; |
| 961 | vxxint(vx, (struct vxcmd *)cmd); |
| 962 | if (vs->vs_state == VXS_READY) |
| 963 | vinthandl(vx, ((V_BSY|RSPquals) << 8)|V_INTR); |
| 964 | splx(s); |
| 965 | } |
| 966 | |
| 967 | /* |
| 968 | * Unsolicited interrupt. |
| 969 | */ |
| 970 | vunsol(vx) |
| 971 | register vx; |
| 972 | { |
| 973 | register struct vxdevice *vp; |
| 974 | struct vx_softc *vs; |
| 975 | int s; |
| 976 | |
| 977 | scope_out(1); |
| 978 | vs = &vx_softc[vx]; |
| 979 | if (vs->vs_type) { /* Its a BOP */ |
| 980 | printf("vx%d: vunsol from BOP\n", vx); |
| 981 | return; |
| 982 | } |
| 983 | s = spl8(); |
| 984 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 985 | if (vp->v_uqual&V_UNBSY) { |
| 986 | vxrint(vx); |
| 987 | vinthandl(vx, ((V_BSY|UNSquals) << 8)|V_INTR); |
| 988 | #ifdef notdef |
| 989 | } else { |
| 990 | printf("vx%d: unsolicited interrupt error\n", vx); |
| 991 | splx(s); |
| 992 | vxstreset(vx); |
| 993 | #endif |
| 994 | } |
| 995 | splx(s); |
| 996 | } |
| 997 | |
| 998 | /* |
| 999 | * Enqueue an interrupt. |
| 1000 | */ |
| 1001 | vinthandl(vx, item) |
| 1002 | register int vx; |
| 1003 | register item; |
| 1004 | { |
| 1005 | register struct vcmds *cp; |
| 1006 | int empty; |
| 1007 | |
| 1008 | cp = &vx_softc[vx].vs_cmds; |
| 1009 | empty = (cp->v_itrfill == cp->v_itrempt); |
| 1010 | cp->v_itrqueu[cp->v_itrfill] = item; |
| 1011 | if (++cp->v_itrfill >= VC_IQLEN) |
| 1012 | cp->v_itrfill = 0; |
| 1013 | if (cp->v_itrfill == cp->v_itrempt) { |
| 1014 | printf("vx%d: interrupt q overflow\n", vx); |
| 1015 | vxstreset(vx); |
| 1016 | } else if (empty) |
| 1017 | vintempt(vx); |
| 1018 | } |
| 1019 | |
| 1020 | vintempt(vx) |
| 1021 | register int vx; |
| 1022 | { |
| 1023 | register struct vcmds *cp; |
| 1024 | register struct vxdevice *vp; |
| 1025 | register short item; |
| 1026 | register short *intr; |
| 1027 | |
| 1028 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 1029 | if (vp->v_vioc&V_BSY) |
| 1030 | return; |
| 1031 | cp = &vx_softc[vx].vs_cmds; |
| 1032 | if (cp->v_itrempt == cp->v_itrfill) |
| 1033 | return; |
| 1034 | item = cp->v_itrqueu[cp->v_itrempt]; |
| 1035 | intr = (short *)&vp->v_vioc; |
| 1036 | switch ((item >> 8)&03) { |
| 1037 | |
| 1038 | case CMDquals: { /* command */ |
| 1039 | int phys; |
| 1040 | |
| 1041 | if (cp->v_empty == cp->v_fill || vp->v_vcbsy&V_BSY) |
| 1042 | break; |
| 1043 | vx_softc[vx].vs_mricmd = (caddr_t)cp->cmdbuf[cp->v_empty]; |
| 1044 | phys = vtoph((struct proc *)0, |
| 1045 | (unsigned)cp->cmdbuf[cp->v_empty]); |
| 1046 | vp->v_vcp[0] = ((short *)&phys)[0]; |
| 1047 | vp->v_vcp[1] = ((short *)&phys)[1]; |
| 1048 | vp->v_vcbsy = V_BSY; |
| 1049 | *intr = item; |
| 1050 | scope_out(4); |
| 1051 | break; |
| 1052 | } |
| 1053 | |
| 1054 | case RSPquals: /* command response */ |
| 1055 | *intr = item; |
| 1056 | scope_out(7); |
| 1057 | break; |
| 1058 | |
| 1059 | case UNSquals: /* unsolicited interrupt */ |
| 1060 | vp->v_uqual = 0; |
| 1061 | *intr = item; |
| 1062 | scope_out(2); |
| 1063 | break; |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * Start a reset on a vioc after error (hopefully) |
| 1069 | */ |
| 1070 | vxstreset(vx) |
| 1071 | register vx; |
| 1072 | { |
| 1073 | register struct vx_softc *vs; |
| 1074 | register struct vxdevice *vp; |
| 1075 | register struct vxcmd *cp; |
| 1076 | register int j; |
| 1077 | extern int vxinreset(); |
| 1078 | int s; |
| 1079 | |
| 1080 | s = spl8() ; |
| 1081 | vs = &vx_softc[vx]; |
| 1082 | if (vs->vs_state == VXS_RESET) { /* avoid recursion */ |
| 1083 | splx(s); |
| 1084 | return; |
| 1085 | } |
| 1086 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 1087 | /* |
| 1088 | * Zero out the vioc structures, mark the vioc as being |
| 1089 | * reset, reinitialize the free command list, reset the vioc |
| 1090 | * and start a timer to check on the progress of the reset. |
| 1091 | */ |
| 1092 | bzero((caddr_t)vs, (unsigned)sizeof (*vs)); |
| 1093 | |
| 1094 | /* |
| 1095 | * Setting VXS_RESET prevents others from issuing |
| 1096 | * commands while allowing currently queued commands to |
| 1097 | * be passed to the VIOC. |
| 1098 | */ |
| 1099 | vs->vs_state = VXS_RESET; |
| 1100 | /* init all cmd buffers */ |
| 1101 | for (j = 0; j < NVCXBUFS; j++) { |
| 1102 | cp = &vs->vs_lst[j]; |
| 1103 | cp->c_fwd = &vs->vs_lst[j+1]; |
| 1104 | } |
| 1105 | vs->vs_avail = &vs->vs_lst[0]; |
| 1106 | cp->c_fwd = (struct vxcmd *)0; |
| 1107 | printf("vx%d: reset...", vx); |
| 1108 | vp->v_fault = 0; |
| 1109 | vp->v_vioc = V_BSY; |
| 1110 | vp->v_hdwre = V_RESET; /* generate reset interrupt */ |
| 1111 | timeout(vxinreset, (caddr_t)vx, hz*5); |
| 1112 | splx(s); |
| 1113 | } |
| 1114 | |
| 1115 | /* continue processing a reset on a vioc after an error (hopefully) */ |
| 1116 | vxinreset(vx) |
| 1117 | int vx; |
| 1118 | { |
| 1119 | register struct vxdevice *vp; |
| 1120 | int s = spl8(); |
| 1121 | |
| 1122 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 1123 | /* |
| 1124 | * See if the vioc has reset. |
| 1125 | */ |
| 1126 | if (vp->v_fault != VXF_READY) { |
| 1127 | printf("failed\n"); |
| 1128 | splx(s); |
| 1129 | return; |
| 1130 | } |
| 1131 | /* |
| 1132 | * Send a LIDENT to the vioc and mess with carrier flags |
| 1133 | * on parallel printer ports. |
| 1134 | */ |
| 1135 | vxinit(vx, (long)0); |
| 1136 | splx(s); |
| 1137 | } |
| 1138 | |
| 1139 | /* |
| 1140 | * Finish the reset on the vioc after an error (hopefully). |
| 1141 | * |
| 1142 | * Restore modem control, parameters and restart output. |
| 1143 | * Since the vioc can handle no more then 24 commands at a time |
| 1144 | * and we could generate as many as 48 commands, we must do this in |
| 1145 | * phases, issuing no more then 16 commands at a time. |
| 1146 | */ |
| 1147 | vxfnreset(vx, cp) |
| 1148 | register int vx; |
| 1149 | register struct vxcmd *cp; |
| 1150 | { |
| 1151 | register struct vx_softc *vs; |
| 1152 | register struct vxdevice *vp ; |
| 1153 | register struct tty *tp, *tp0; |
| 1154 | register int i; |
| 1155 | #ifdef notdef |
| 1156 | register int on; |
| 1157 | #endif |
| 1158 | extern int vxrestart(); |
| 1159 | int s = spl8(); |
| 1160 | |
| 1161 | vs = &vx_softc[vx]; |
| 1162 | vs->vs_loport = cp->par[5]; |
| 1163 | vs->vs_hiport = cp->par[7]; |
| 1164 | vrelease(vs, cp); |
| 1165 | vs->vs_nbr = vx; /* assign VIOC-X board number */ |
| 1166 | vs->vs_state = VXS_READY; |
| 1167 | |
| 1168 | vp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 1169 | vp->v_vcid = 0; |
| 1170 | |
| 1171 | /* |
| 1172 | * Restore modem information and control. |
| 1173 | */ |
| 1174 | tp0 = &vx_tty[vx*16]; |
| 1175 | for (i = vs->vs_loport; i <= vs->vs_hiport; i++) { |
| 1176 | tp = tp0 + i; |
| 1177 | if (tp->t_state&(TS_ISOPEN|TS_WOPEN)) { |
| 1178 | tp->t_state &= ~TS_CARR_ON; |
| 1179 | vcmodem(tp->t_dev, VMOD_ON); |
| 1180 | if (tp->t_state&TS_CARR_ON) |
| 1181 | wakeup((caddr_t)&tp->t_canq); |
| 1182 | else if (tp->t_state & TS_ISOPEN) { |
| 1183 | ttyflush(tp, FREAD|FWRITE); |
| 1184 | if (tp->t_state&TS_FLUSH) |
| 1185 | wakeup((caddr_t)&tp->t_state); |
| 1186 | if ((tp->t_flags&NOHANG) == 0) { |
| 1187 | gsignal(tp->t_pgrp, SIGHUP); |
| 1188 | gsignal(tp->t_pgrp, SIGCONT); |
| 1189 | } |
| 1190 | } |
| 1191 | } |
| 1192 | /* |
| 1193 | * If carrier has changed while we were resetting, |
| 1194 | * take appropriate action. |
| 1195 | */ |
| 1196 | #ifdef notdef |
| 1197 | on = vp->v_dcd & 1<<i; |
| 1198 | if (on && (tp->t_state&TS_CARR_ON) == 0) { |
| 1199 | tp->t_state |= TS_CARR_ON; |
| 1200 | wakeup((caddr_t)&tp->t_canq); |
| 1201 | } else if (!on && tp->t_state&TS_CARR_ON) { |
| 1202 | tp->t_state &= ~TS_CARR_ON; |
| 1203 | if (tp->t_state & TS_ISOPEN) { |
| 1204 | ttyflush(tp, FREAD|FWRITE); |
| 1205 | if (tp->t_state&TS_FLUSH) |
| 1206 | wakeup((caddr_t)&tp->t_state); |
| 1207 | if ((tp->t_flags&NOHANG) == 0) { |
| 1208 | gsignal(tp->t_pgrp, SIGHUP); |
| 1209 | gsignal(tp->t_pgrp, SIGCONT); |
| 1210 | } |
| 1211 | } |
| 1212 | } |
| 1213 | #endif |
| 1214 | } |
| 1215 | vs->vs_state = VXS_RESET; |
| 1216 | timeout(vxrestart, (caddr_t)vx, hz); |
| 1217 | splx(s); |
| 1218 | } |
| 1219 | |
| 1220 | /* |
| 1221 | * Restore a particular aspect of the VIOC. |
| 1222 | */ |
| 1223 | vxrestart(vx) |
| 1224 | int vx; |
| 1225 | { |
| 1226 | register struct tty *tp, *tp0; |
| 1227 | register struct vx_softc *vs; |
| 1228 | register int i, cnt; |
| 1229 | int s = spl8(); |
| 1230 | |
| 1231 | cnt = vx >> 8; |
| 1232 | vx &= 0xff; |
| 1233 | vs = &vx_softc[vx]; |
| 1234 | vs->vs_state = VXS_READY; |
| 1235 | tp0 = &vx_tty[vx*16]; |
| 1236 | for (i = vs->vs_loport; i <= vs->vs_hiport; i++) { |
| 1237 | tp = tp0 + i; |
| 1238 | if (cnt != 0) { |
| 1239 | tp->t_state &= ~(TS_BUSY|TS_TIMEOUT); |
| 1240 | if (tp->t_state&(TS_ISOPEN|TS_WOPEN)) |
| 1241 | vxstart(tp); /* restart pending output */ |
| 1242 | } else { |
| 1243 | if (tp->t_state&(TS_WOPEN|TS_ISOPEN)) |
| 1244 | vxcparam(tp->t_dev, 0); |
| 1245 | } |
| 1246 | } |
| 1247 | if (cnt == 0) { |
| 1248 | vs->vs_state = VXS_RESET; |
| 1249 | timeout(vxrestart, (caddr_t)(vx + 1*256), hz); |
| 1250 | } else |
| 1251 | printf("done\n"); |
| 1252 | splx(s); |
| 1253 | } |
| 1254 | |
| 1255 | vxreset(dev) |
| 1256 | dev_t dev; |
| 1257 | { |
| 1258 | |
| 1259 | vxstreset(minor(dev) >> 4); /* completes asynchronously */ |
| 1260 | } |
| 1261 | |
| 1262 | vxfreset(vx) |
| 1263 | register int vx; |
| 1264 | { |
| 1265 | struct vba_device *vi; |
| 1266 | |
| 1267 | if ((unsigned)vx > NVX || (vi = vxinfo[vx]) == 0 || vi->ui_addr == 0) |
| 1268 | return (ENODEV); |
| 1269 | vx_softc[vx].vs_state = VXS_READY; |
| 1270 | vxstreset(vx); |
| 1271 | return (0); /* completes asynchronously */ |
| 1272 | } |
| 1273 | |
| 1274 | vcmodem(dev, flag) |
| 1275 | dev_t dev; |
| 1276 | { |
| 1277 | struct tty *tp; |
| 1278 | register struct vxcmd *cp; |
| 1279 | register struct vx_softc *vs; |
| 1280 | register struct vxdevice *kp; |
| 1281 | register port; |
| 1282 | int unit; |
| 1283 | |
| 1284 | unit = minor(dev); |
| 1285 | tp = &vx_tty[unit]; |
| 1286 | vs = (struct vx_softc *)tp->t_addr; |
| 1287 | cp = vobtain(vs); |
| 1288 | kp = (struct vxdevice *)((struct vba_device *)vxinfo[vs->vs_nbr])->ui_addr; |
| 1289 | |
| 1290 | port = unit & 017; |
| 1291 | /* |
| 1292 | * Issue MODEM command |
| 1293 | */ |
| 1294 | cp->cmd = VXC_MDMCTL; |
| 1295 | cp->par[0] = (flag == VMOD_ON) ? V_ENAB : V_DISAB; |
| 1296 | cp->par[1] = port; |
| 1297 | vcmd(vs->vs_nbr, (caddr_t)&cp->cmd); |
| 1298 | port -= vs->vs_loport; |
| 1299 | if ((kp->v_dcd >> port) & 1) { |
| 1300 | if (flag == VMOD_ON) |
| 1301 | tp->t_state |= TS_CARR_ON; |
| 1302 | return (1); |
| 1303 | } |
| 1304 | return (0); |
| 1305 | } |
| 1306 | |
| 1307 | /* |
| 1308 | * VCMINTR called when an unsolicited interrup occurs signaling |
| 1309 | * some change of modem control state. |
| 1310 | */ |
| 1311 | vcmintr(vx) |
| 1312 | register vx; |
| 1313 | { |
| 1314 | register struct vxdevice *kp; |
| 1315 | register struct tty *tp; |
| 1316 | register port; |
| 1317 | |
| 1318 | kp = (struct vxdevice *)((struct vba_device *)vxinfo[vx])->ui_addr; |
| 1319 | port = kp->v_usdata[0] & 017; |
| 1320 | tp = &vx_tty[vx*16+port]; |
| 1321 | #if NVBSC > 0 |
| 1322 | /* |
| 1323 | * Check for change in DSR for BISYNC port. |
| 1324 | */ |
| 1325 | if (bscport[vx*16+port]&BISYNC) { |
| 1326 | if (kp->v_ustat&DSR_CHG) { |
| 1327 | register struct vx_softc *xp; |
| 1328 | register struct bsc *bp; |
| 1329 | extern struct bsc bsc[]; |
| 1330 | |
| 1331 | vs = (struct vx_softc *)tp->t_addr; |
| 1332 | bp = &bsc[minor(tp->t_dev)] ; |
| 1333 | bp->b_hlflgs &= ~BSC_DSR ; |
| 1334 | if (kp->v_ustat & DSR_ON) |
| 1335 | bp->b_hlflgs |= BSC_DSR ; |
| 1336 | printf("BSC DSR Chg: %x\n", kp->v_ustat&DSR_CHG);/*XXX*/ |
| 1337 | } |
| 1338 | return; |
| 1339 | } |
| 1340 | #endif |
| 1341 | if ((kp->v_ustat&DCD_ON) && ((tp->t_state&TS_CARR_ON) == 0)) { |
| 1342 | tp->t_state |= TS_CARR_ON; |
| 1343 | wakeup((caddr_t)&tp->t_canq); |
| 1344 | return; |
| 1345 | } |
| 1346 | if ((kp->v_ustat&DCD_OFF) && (tp->t_state&TS_CARR_ON)) { |
| 1347 | tp->t_state &= ~TS_CARR_ON; |
| 1348 | if (tp->t_state&TS_ISOPEN) { |
| 1349 | register struct vx_softc *vs; |
| 1350 | register struct vcmds *cp; |
| 1351 | register struct vxcmd *cmdp; |
| 1352 | |
| 1353 | ttyflush(tp, FREAD|FWRITE); |
| 1354 | /* clear all pending trnansmits */ |
| 1355 | vs = &vx_softc[vx]; |
| 1356 | if (tp->t_state&(TS_BUSY|TS_FLUSH) && |
| 1357 | vs->vs_vers == VXV_NEW) { |
| 1358 | int i, cmdfound = 0; |
| 1359 | |
| 1360 | cp = &vs->vs_cmds; |
| 1361 | for (i = cp->v_empty; i != cp->v_fill; ) { |
| 1362 | cmdp = (struct vxcmd *)((long *)cp->cmdbuf[i]-1); |
| 1363 | if ((cmdp->cmd == VXC_XMITDTA || |
| 1364 | cmdp->cmd == VXC_XMITIMM) && |
| 1365 | ((struct vxmit *)cmdp->par)->line == port) { |
| 1366 | cmdfound++; |
| 1367 | cmdp->cmd = VXC_FDTATOX; |
| 1368 | cmdp->par[1] = port; |
| 1369 | } |
| 1370 | if (++i >= VC_CMDBUFL) |
| 1371 | i = 0; |
| 1372 | } |
| 1373 | if (cmdfound) |
| 1374 | tp->t_state &= ~(TS_BUSY|TS_FLUSH); |
| 1375 | /* cmd is already in vioc, have to flush it */ |
| 1376 | else { |
| 1377 | cmdp = vobtain(vs); |
| 1378 | cmdp->cmd = VXC_FDTATOX; |
| 1379 | cmdp->par[1] = port; |
| 1380 | vcmd(vx, (caddr_t)&cmdp->cmd); |
| 1381 | } |
| 1382 | } |
| 1383 | if ((tp->t_flags&NOHANG) == 0) { |
| 1384 | gsignal(tp->t_pgrp, SIGHUP); |
| 1385 | gsignal(tp->t_pgrp, SIGCONT); |
| 1386 | } |
| 1387 | } |
| 1388 | return; |
| 1389 | } |
| 1390 | if ((kp->v_ustat&BRK_CHR) && (tp->t_state&TS_ISOPEN)) { |
| 1391 | (*linesw[tp->t_line].l_rint)(tp->t_intrc & 0377, tp); |
| 1392 | return; |
| 1393 | } |
| 1394 | } |
| 1395 | #endif |