1 /* $NetBSD: lpt_pcc.c,v 1.12 2008/04/28 20:23:29 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Device Driver back-end for the MVME147's parallel printer port 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: lpt_pcc.c,v 1.12 2008/04/28 20:23:29 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/syslog.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/mvme/lptvar.h> 48 49 #include <mvme68k/dev/lpt_pccreg.h> 50 #include <mvme68k/dev/pccreg.h> 51 #include <mvme68k/dev/pccvar.h> 52 53 #include "ioconf.h" 54 55 56 static int lpt_pcc_intr(void *); 57 static void lpt_pcc_open(struct lpt_softc *, int); 58 static void lpt_pcc_close(struct lpt_softc *); 59 static void lpt_pcc_iprime(struct lpt_softc *); 60 static void lpt_pcc_speed(struct lpt_softc *, int); 61 static int lpt_pcc_notrdy(struct lpt_softc *, int); 62 static void lpt_pcc_wr_data(struct lpt_softc *, u_char); 63 64 struct lpt_funcs lpt_pcc_funcs = { 65 lpt_pcc_open, 66 lpt_pcc_close, 67 lpt_pcc_iprime, 68 lpt_pcc_speed, 69 lpt_pcc_notrdy, 70 lpt_pcc_wr_data 71 }; 72 73 /* 74 * Autoconfig stuff 75 */ 76 static int lpt_pcc_match(device_t, cfdata_t , void *); 77 static void lpt_pcc_attach(device_t, device_t, void *); 78 79 CFATTACH_DECL_NEW(lpt_pcc, sizeof(struct lpt_softc), 80 lpt_pcc_match, lpt_pcc_attach, NULL, NULL); 81 82 83 /*ARGSUSED*/ 84 static int 85 lpt_pcc_match(device_t parent, cfdata_t cf, void *args) 86 { 87 struct pcc_attach_args *pa; 88 89 pa = args; 90 91 if (strcmp(pa->pa_name, lpt_cd.cd_name)) 92 return 0; 93 94 pa->pa_ipl = cf->pcccf_ipl; 95 return 1; 96 } 97 98 /*ARGSUSED*/ 99 static void 100 lpt_pcc_attach(device_t parent, device_t self, void *args) 101 { 102 struct lpt_softc *sc; 103 struct pcc_attach_args *pa; 104 105 sc = device_private(self); 106 sc->sc_dev = self; 107 pa = args; 108 109 sc->sc_bust = pa->pa_bust; 110 bus_space_map(pa->pa_bust, pa->pa_offset, LPREG_SIZE, 0, &sc->sc_bush); 111 112 sc->sc_ipl = pa->pa_ipl & PCC_IMASK; 113 sc->sc_funcs = &lpt_pcc_funcs; 114 sc->sc_laststatus = 0; 115 116 aprint_normal(": PCC Parallel Printer\n"); 117 118 /* 119 * Disable interrupts until device is opened 120 */ 121 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, 0); 122 123 /* 124 * Main attachment code 125 */ 126 lpt_attach_subr(sc); 127 128 /* Register the event counter */ 129 evcnt_attach_dynamic(&sc->sc_evcnt, EVCNT_TYPE_INTR, 130 pccintr_evcnt(sc->sc_ipl), "printer", device_xname(sc->sc_dev)); 131 132 /* 133 * Hook into the printer interrupt 134 */ 135 pccintr_establish(PCCV_PRINTER, lpt_pcc_intr, sc->sc_ipl, sc, 136 &sc->sc_evcnt); 137 } 138 139 /* 140 * Handle printer interrupts which occur when the printer is ready to accept 141 * another char. 142 */ 143 int 144 lpt_pcc_intr(void *arg) 145 { 146 struct lpt_softc *sc; 147 int i; 148 149 sc = arg; 150 151 /* is printer online and ready for output */ 152 if (lpt_pcc_notrdy(sc, 0) && lpt_pcc_notrdy(sc, 1)) 153 return 0; 154 155 i = lpt_intr(sc); 156 157 if (pcc_reg_read(sys_pcc, PCCREG_PRNT_INTR_CTRL) & LPI_ACKINT) { 158 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, 159 sc->sc_icr | LPI_ACKINT); 160 } 161 162 return i; 163 } 164 165 166 static void 167 lpt_pcc_open(struct lpt_softc *sc, int int_ena) 168 { 169 int sps; 170 171 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, 172 LPI_ACKINT | LPI_FAULTINT); 173 174 if (int_ena == 0) { 175 sps = splhigh(); 176 sc->sc_icr = sc->sc_ipl | LPI_ENABLE; 177 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, sc->sc_icr); 178 splx(sps); 179 } 180 } 181 182 static void 183 lpt_pcc_close(struct lpt_softc *sc) 184 { 185 186 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, 0); 187 sc->sc_icr = sc->sc_ipl; 188 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, sc->sc_icr); 189 } 190 191 /* ARGSUSED */ 192 static void 193 lpt_pcc_iprime(struct lpt_softc *sc) 194 { 195 196 lpt_control_write(LPC_INPUT_PRIME); 197 delay(100); 198 } 199 200 /* ARGSUSED */ 201 static void 202 lpt_pcc_speed(struct lpt_softc *sc, int speed) 203 { 204 205 if (speed == LPT_STROBE_FAST) 206 lpt_control_write(LPC_FAST_STROBE); 207 else 208 lpt_control_write(0); 209 } 210 211 static int 212 lpt_pcc_notrdy(struct lpt_softc *sc, int err) 213 { 214 u_char status; 215 u_char new; 216 217 #define LPS_INVERT (LPS_SELECT) 218 #define LPS_MASK (LPS_SELECT|LPS_FAULT|LPS_BUSY|LPS_PAPER_EMPTY) 219 220 status = (lpt_status_read(sc) ^ LPS_INVERT) & LPS_MASK; 221 222 if (err) { 223 new = status & ~sc->sc_laststatus; 224 sc->sc_laststatus = status; 225 226 if (new & LPS_SELECT) 227 log(LOG_NOTICE, "%s: offline\n", 228 device_xname(sc->sc_dev)); 229 else if (new & LPS_PAPER_EMPTY) 230 log(LOG_NOTICE, "%s: out of paper\n", 231 device_xname(sc->sc_dev)); 232 else if (new & LPS_FAULT) 233 log(LOG_NOTICE, "%s: output error\n", 234 device_xname(sc->sc_dev)); 235 } 236 237 pcc_reg_write(sys_pcc, PCCREG_PRNT_INTR_CTRL, 238 sc->sc_icr | LPI_FAULTINT); 239 240 return status; 241 } 242 243 static void 244 lpt_pcc_wr_data(struct lpt_softc *sc, u_char data) 245 { 246 247 lpt_data_write(sc, data); 248 } 249
Indexes created Thu Sep 25 06:09:39 GMT 2025