lpt_pcctwo.c revision 1.6.6.1
1 /* $NetBSD: lpt_pcctwo.c,v 1.6.6.1 2006/06/21 15:05:02 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Device Driver back-end for the PCCChip2's parallel printer port 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: lpt_pcctwo.c,v 1.6.6.1 2006/06/21 15:05:02 yamt Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/kernel.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 #include <sys/syslog.h> 51 52 #include <machine/cpu.h> 53 #include <machine/bus.h> 54 55 #include <dev/mvme/lptvar.h> 56 #include <dev/mvme/pcctworeg.h> 57 #include <dev/mvme/pcctwovar.h> 58 59 /* 60 * Autoconfig stuff 61 */ 62 int lpt_pcctwo_match(struct device *, struct cfdata *, void *); 63 void lpt_pcctwo_attach(struct device *, struct device *, void *); 64 65 CFATTACH_DECL(lpt_pcctwo, sizeof(struct lpt_softc), 66 lpt_pcctwo_match, lpt_pcctwo_attach, NULL, NULL); 67 68 extern struct cfdriver lpt_cd; 69 70 71 int lpt_pcctwo_intr(void *); 72 void lpt_pcctwo_open(struct lpt_softc *, int); 73 void lpt_pcctwo_close(struct lpt_softc *); 74 void lpt_pcctwo_iprime(struct lpt_softc *); 75 void lpt_pcctwo_speed(struct lpt_softc *, int); 76 int lpt_pcctwo_notrdy(struct lpt_softc *, int); 77 void lpt_pcctwo_wr_data(struct lpt_softc *, u_char); 78 79 struct lpt_funcs lpt_pcctwo_funcs = { 80 lpt_pcctwo_open, 81 lpt_pcctwo_close, 82 lpt_pcctwo_iprime, 83 lpt_pcctwo_speed, 84 lpt_pcctwo_notrdy, 85 lpt_pcctwo_wr_data 86 }; 87 88 /* ARGSUSED */ 89 int 90 lpt_pcctwo_match(parent, cf, args) 91 struct device *parent; 92 struct cfdata *cf; 93 void *args; 94 { 95 struct pcctwo_attach_args *pa; 96 97 pa = args; 98 99 if (strcmp(pa->pa_name, lpt_cd.cd_name)) 100 return (0); 101 102 #ifdef MVME68K 103 if (machineid != MVME_167 && machineid != MVME_177) 104 return (0); 105 #endif 106 107 #ifdef MVME88K 108 if (machineid != MVME_187) 109 return (0); 110 #endif 111 112 pa->pa_ipl = cf->pcctwocf_ipl; 113 114 return (1); 115 } 116 117 /* ARGSUSED */ 118 void 119 lpt_pcctwo_attach(parent, self, args) 120 struct device *parent; 121 struct device *self; 122 void *args; 123 { 124 struct pcctwo_attach_args *pa; 125 struct lpt_softc *sc; 126 127 pa = (struct pcctwo_attach_args *) args; 128 sc = device_private(self); 129 130 /* The printer registers are part of the PCCChip2's own registers. */ 131 sc->sc_bust = pa->pa_bust; 132 bus_space_map(pa->pa_bust, pa->pa_offset, PCC2REG_SIZE, 0, 133 &sc->sc_bush); 134 135 sc->sc_ipl = pa->pa_ipl & PCCTWO_ICR_LEVEL_MASK; 136 sc->sc_laststatus = 0; 137 sc->sc_funcs = &lpt_pcctwo_funcs; 138 139 printf(": PCCchip2 Parallel Printer\n"); 140 141 /* 142 * Disable interrupts until device is opened 143 */ 144 pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 0); 145 pcc2_reg_write(sc, PCC2REG_PRT_FAULT_ICSR, 0); 146 pcc2_reg_write(sc, PCC2REG_PRT_SEL_ICSR, 0); 147 pcc2_reg_write(sc, PCC2REG_PRT_PE_ICSR, 0); 148 pcc2_reg_write(sc, PCC2REG_PRT_BUSY_ICSR, 0); 149 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0); 150 151 /* 152 * Main attachment code 153 */ 154 lpt_attach_subr(sc); 155 156 /* Register the event counter */ 157 evcnt_attach_dynamic(&sc->sc_evcnt, EVCNT_TYPE_INTR, 158 pcctwointr_evcnt(sc->sc_ipl), "printer", sc->sc_dev.dv_xname); 159 160 /* 161 * Hook into the printer interrupt 162 */ 163 pcctwointr_establish(PCCTWOV_PRT_ACK, lpt_pcctwo_intr, sc->sc_ipl, sc, 164 &sc->sc_evcnt); 165 } 166 167 /* 168 * Handle printer interrupts 169 */ 170 int 171 lpt_pcctwo_intr(arg) 172 void *arg; 173 { 174 struct lpt_softc *sc; 175 int i; 176 177 sc = (struct lpt_softc *) arg; 178 179 /* is printer online and ready for output */ 180 if (lpt_pcctwo_notrdy(sc, 0) || lpt_pcctwo_notrdy(sc, 1)) 181 return (0); 182 183 i = lpt_intr(sc); 184 185 if (pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) & PCCTWO_PRT_IN_SR_PINT) 186 pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 187 sc->sc_icr | PCCTWO_ICR_ICLR); 188 189 return (i); 190 } 191 192 void 193 lpt_pcctwo_open(sc, int_ena) 194 struct lpt_softc *sc; 195 int int_ena; 196 { 197 int sps; 198 199 pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 200 PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE); 201 202 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 203 pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_DOEN); 204 205 if (int_ena == 0) { 206 sps = splhigh(); 207 sc->sc_icr = sc->sc_ipl | PCCTWO_ICR_EDGE; 208 pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, sc->sc_icr); 209 splx(sps); 210 } 211 } 212 213 void 214 lpt_pcctwo_close(sc) 215 struct lpt_softc *sc; 216 { 217 218 pcc2_reg_write(sc, PCC2REG_PRT_ACK_ICSR, 219 PCCTWO_ICR_ICLR | PCCTWO_ICR_EDGE); 220 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 0); 221 } 222 223 void 224 lpt_pcctwo_iprime(sc) 225 struct lpt_softc *sc; 226 { 227 228 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 229 pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) | PCCTWO_PRT_CTRL_INP); 230 231 delay(100); 232 233 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, 234 pcc2_reg_read(sc, PCC2REG_PRT_CONTROL) & ~PCCTWO_PRT_CTRL_INP); 235 236 delay(100); 237 } 238 239 void 240 lpt_pcctwo_speed(sc, speed) 241 struct lpt_softc *sc; 242 int speed; 243 { 244 u_int8_t reg; 245 246 reg = pcc2_reg_read(sc, PCC2REG_PRT_CONTROL); 247 248 if (speed == LPT_STROBE_FAST) 249 reg |= PCCTWO_PRT_CTRL_FAST; 250 else 251 reg &= ~PCCTWO_PRT_CTRL_FAST; 252 253 pcc2_reg_write(sc, PCC2REG_PRT_CONTROL, reg); 254 } 255 256 int 257 lpt_pcctwo_notrdy(sc, err) 258 struct lpt_softc *sc; 259 int err; 260 { 261 u_int8_t status; 262 u_int8_t new; 263 264 #define LPS_INVERT (PCCTWO_PRT_IN_SR_SEL) 265 #define LPS_MASK (PCCTWO_PRT_IN_SR_SEL | PCCTWO_PRT_IN_SR_FLT | \ 266 PCCTWO_PRT_IN_SR_BSY | PCCTWO_PRT_IN_SR_PE) 267 268 status = pcc2_reg_read(sc, PCC2REG_PRT_INPUT_STATUS) ^ LPS_INVERT; 269 status &= LPS_MASK; 270 271 if (err) { 272 new = status & ~sc->sc_laststatus; 273 sc->sc_laststatus = status; 274 275 if (new & PCCTWO_PRT_IN_SR_SEL) 276 log(LOG_NOTICE, "%s: offline\n", 277 sc->sc_dev.dv_xname); 278 else if (new & PCCTWO_PRT_IN_SR_PE) 279 log(LOG_NOTICE, "%s: out of paper\n", 280 sc->sc_dev.dv_xname); 281 else if (new & PCCTWO_PRT_IN_SR_FLT) 282 log(LOG_NOTICE, "%s: output error\n", 283 sc->sc_dev.dv_xname); 284 } 285 286 return (status); 287 } 288 289 void 290 lpt_pcctwo_wr_data(sc, data) 291 struct lpt_softc *sc; 292 u_char data; 293 { 294 295 pcc2_reg_write16(sc, PCC2REG_PRT_DATA, (u_int16_t) data); 296 } 297
Indexes created Tue Oct 21 15:09:54 GMT 2025