1 /* lp.c 4.31 82/12/17 */ 2 3 #include "lp.h" 4 #if NLP > 0 5 /* 6 * LP-11 Line printer driver 7 * 8 * This driver has been modified to work on printers where 9 * leaving IENABLE set would cause continuous interrupts. 10 */ 11 #include "../machine/pte.h" 12 13 #include "../h/param.h" 14 #include "../h/dir.h" 15 #include "../h/user.h" 16 #include "../h/buf.h" 17 #include "../h/systm.h" 18 #include "../h/map.h" 19 20 #include "../vaxuba/ubavar.h" 21 22 #define LPPRI (PZERO+8) 23 #define IENABLE 0100 24 #define DONE 0200 25 #define ERROR 0100000 26 #define LPLWAT 650 27 #define LPHWAT 800 28 29 #ifndef CAD 30 #define MAXCOL 132 31 #else 32 #define MAXCOL 512 33 #endif 34 #define CAP 1 35 36 #define LPUNIT(dev) (minor(dev) >> 3) 37 38 struct lpdevice { 39 short lpsr; 40 short lpbuf; 41 }; 42 43 struct lp_softc { 44 struct clist sc_outq; 45 int sc_state; 46 int sc_physcol; 47 int sc_logcol; 48 int sc_physline; 49 char sc_flags; 50 int sc_lpchar; 51 struct buf *sc_inbuf; 52 } lp_softc[NLP]; 53 54 struct uba_device *lpinfo[NLP]; 55 56 int lpprobe(), lpattach(), lptout(); 57 u_short lpstd[] = { 0177514 }; 58 struct uba_driver lpdriver = 59 { lpprobe, 0, lpattach, 0, lpstd, "lp", lpinfo }; 60 61 /* bits for state */ 62 #define OPEN 1 /* device is open */ 63 #define TOUT 2 /* timeout is active */ 64 #define MOD 4 /* device state has been modified */ 65 #define ASLP 8 /* awaiting draining of printer */ 66 67 extern lbolt; 68 int lptout(); 69 70 lpattach(ui) 71 struct uba_device *ui; 72 { 73 register struct lp_softc *sc; 74 75 sc = &lp_softc[ui->ui_unit]; 76 sc->sc_lpchar = -1; 77 } 78 79 lpprobe(reg) 80 caddr_t reg; 81 { 82 register int br, cvec; /* value-result */ 83 register struct lpdevice *lpaddr = (struct lpdevice *)reg; 84 #ifdef lint 85 br = 0; cvec = br; br = cvec; 86 lpintr(0); 87 #endif 88 89 #ifdef INGVAX 90 br = 0x14; 91 cvec = 0200; 92 #else 93 lpaddr->lpsr = IENABLE; 94 DELAY(5); 95 lpaddr->lpsr = 0; 96 #endif 97 return (sizeof (struct lpdevice)); 98 } 99 100 /*ARGSUSED*/ 101 lpopen(dev, flag) 102 dev_t dev; 103 int flag; 104 { 105 register int unit; 106 register struct lpdevice *lpaddr; 107 register struct lp_softc *sc; 108 register struct uba_device *ui; 109 110 if ((unit = LPUNIT(dev)) >= NLP || 111 (sc = &lp_softc[unit])->sc_state&OPEN || 112 (ui = lpinfo[unit]) == 0 || ui->ui_alive == 0) 113 return (ENXIO); 114 lpaddr = (struct lpdevice *)ui->ui_addr; 115 if (lpaddr->lpsr&ERROR) 116 return (EIO); 117 sc->sc_state |= OPEN; 118 sc->sc_inbuf = geteblk(512); 119 sc->sc_flags = minor(dev) & 07; 120 (void) spl4(); 121 if ((sc->sc_state&TOUT) == 0) { 122 sc->sc_state |= TOUT; 123 timeout(lptout, (caddr_t)dev, 10*hz); 124 } 125 (void) spl0(); 126 lpcanon(dev, '\f'); 127 return (0); 128 } 129 130 /*ARGSUSED*/ 131 lpclose(dev, flag) 132 dev_t dev; 133 int flag; 134 { 135 register struct lp_softc *sc = &lp_softc[LPUNIT(dev)]; 136 137 lpcanon(dev, '\f'); 138 brelse(sc->sc_inbuf); 139 sc->sc_state &= ~OPEN; 140 } 141 142 lpwrite(dev, uio) 143 dev_t dev; 144 struct uio *uio; 145 { 146 register unsigned n; 147 register char *cp; 148 register struct lp_softc *sc = &lp_softc[LPUNIT(dev)]; 149 int error; 150 151 while (n = min(512, uio->uio_resid)) { 152 cp = sc->sc_inbuf->b_un.b_addr; 153 error = uiomove(cp, n, UIO_WRITE, uio); 154 if (error) 155 return (error); 156 do 157 lpcanon(dev, *cp++); 158 while (--n); 159 } 160 return (0); 161 } 162 163 lpcanon(dev, c) 164 dev_t dev; 165 register int c; 166 { 167 register int logcol, physcol; 168 register struct lp_softc *sc = &lp_softc[LPUNIT(dev)]; 169 170 if (sc->sc_flags&CAP) { 171 register c2; 172 173 if (c>='a' && c<='z') 174 c += 'A'-'a'; else 175 switch (c) { 176 177 case '{': 178 c2 = '('; 179 goto esc; 180 181 case '}': 182 c2 = ')'; 183 goto esc; 184 185 case '`': 186 c2 = '\''; 187 goto esc; 188 189 case '|': 190 c2 = '!'; 191 goto esc; 192 193 case '~': 194 c2 = '^'; 195 196 esc: 197 lpcanon(dev, c2); 198 sc->sc_logcol--; 199 c = '-'; 200 } 201 } 202 logcol = sc->sc_logcol; 203 physcol = sc->sc_physcol; 204 if (c == ' ') 205 logcol++; 206 else switch(c) { 207 208 case '\t': 209 logcol = (logcol+8) & ~7; 210 break; 211 212 case '\f': 213 if (sc->sc_physline == 0 && physcol == 0) 214 break; 215 /* fall into ... */ 216 217 case '\n': 218 lpoutput(dev, c); 219 if (c == '\f') 220 sc->sc_physline = 0; 221 else 222 sc->sc_physline++; 223 physcol = 0; 224 /* fall into ... */ 225 226 case '\r': 227 logcol = 0; 228 (void) spl4(); 229 lpintr(LPUNIT(dev)); 230 (void) spl0(); 231 break; 232 233 case '\b': 234 if (logcol > 0) 235 logcol--; 236 break; 237 238 default: 239 if (logcol < physcol) { 240 lpoutput(dev, '\r'); 241 physcol = 0; 242 } 243 if (logcol < MAXCOL) { 244 while (logcol > physcol) { 245 lpoutput(dev, ' '); 246 physcol++; 247 } 248 lpoutput(dev, c); 249 physcol++; 250 } 251 logcol++; 252 } 253 if (logcol > 1000) /* ignore long lines */ 254 logcol = 1000; 255 sc->sc_logcol = logcol; 256 sc->sc_physcol = physcol; 257 } 258 259 lpoutput(dev, c) 260 dev_t dev; 261 int c; 262 { 263 register struct lp_softc *sc = &lp_softc[LPUNIT(dev)]; 264 265 if (sc->sc_outq.c_cc >= LPHWAT) { 266 (void) spl4(); 267 lpintr(LPUNIT(dev)); /* unchoke */ 268 while (sc->sc_outq.c_cc >= LPHWAT) { 269 sc->sc_state |= ASLP; /* must be ERROR */ 270 sleep((caddr_t)sc, LPPRI); 271 } 272 (void) spl0(); 273 } 274 while (putc(c, &sc->sc_outq)) 275 sleep((caddr_t)&lbolt, LPPRI); 276 } 277 278 lpintr(lp11) 279 int lp11; 280 { 281 register int n; 282 register struct lp_softc *sc = &lp_softc[lp11]; 283 register struct uba_device *ui = lpinfo[lp11]; 284 register struct lpdevice *lpaddr = (struct lpdevice *)ui->ui_addr; 285 286 lpaddr->lpsr &= ~IENABLE; 287 n = sc->sc_outq.c_cc; 288 if (sc->sc_lpchar < 0) 289 sc->sc_lpchar = getc(&sc->sc_outq); 290 while ((lpaddr->lpsr&DONE) && sc->sc_lpchar >= 0) { 291 lpaddr->lpbuf = sc->sc_lpchar; 292 sc->sc_lpchar = getc(&sc->sc_outq); 293 } 294 sc->sc_state |= MOD; 295 if (sc->sc_outq.c_cc > 0 && (lpaddr->lpsr&ERROR)==0) 296 lpaddr->lpsr |= IENABLE; /* ok and more to do later */ 297 if (n>LPLWAT && sc->sc_outq.c_cc<=LPLWAT && sc->sc_state&ASLP) { 298 sc->sc_state &= ~ASLP; 299 wakeup((caddr_t)sc); /* top half should go on */ 300 } 301 } 302 303 lptout(dev) 304 dev_t dev; 305 { 306 register struct lp_softc *sc; 307 register struct uba_device *ui; 308 register struct lpdevice *lpaddr; 309 310 sc = &lp_softc[LPUNIT(dev)]; 311 ui = lpinfo[LPUNIT(dev)]; 312 lpaddr = (struct lpdevice *) ui->ui_addr; 313 if ((sc->sc_state&MOD) != 0) { 314 sc->sc_state &= ~MOD; /* something happened */ 315 timeout(lptout, (caddr_t)dev, 2*hz); /* so don't sweat */ 316 return; 317 } 318 if ((sc->sc_state&OPEN) == 0) { 319 sc->sc_state &= ~TOUT; /* no longer open */ 320 lpaddr->lpsr = 0; 321 return; 322 } 323 if (sc->sc_outq.c_cc && (lpaddr->lpsr&DONE) && (lpaddr->lpsr&ERROR)==0) 324 lpintr(LPUNIT(dev)); /* ready to go */ 325 timeout(lptout, (caddr_t)dev, 10*hz); 326 } 327 328 lpreset(uban) 329 int uban; 330 { 331 register struct uba_device *ui; 332 register struct lpdevice *lpaddr; 333 register int unit; 334 335 for (unit = 0; unit < NLP; unit++) { 336 if ((ui = lpinfo[unit]) == 0 || ui->ui_ubanum != uban || 337 ui->ui_alive == 0) 338 continue; 339 printf(" lp%d", unit); 340 lpaddr = (struct lpdevice *)ui->ui_addr; 341 lpaddr->lpsr |= IENABLE; 342 } 343 } 344