| ppb_1284.c (38061) | ppb_1284.c (39134) |
|---|---|
| 1/*- 2 * Copyright (c) 1997 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 1997 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $Id: ppb_1284.c,v 1.3 1998/01/31 07:23:06 eivind Exp $ | 26 * $Id: ppb_1284.c,v 1.4 1998/08/03 19:14:31 msmith Exp $ |
| 27 * 28 */ 29 30#include "opt_debug_1284.h" 31 32#include <sys/param.h> 33#include <sys/systm.h> 34 --- 67 unchanged lines hidden (view full) --- 102int 103nibble_1284_inbyte(struct ppb_device *dev, char *buffer) 104{ 105 char nibble[2]; 106 int i, error; 107 108 for (i = 0; i < 2; i++) { 109 /* ready to take data (nAUTO low) */ | 27 * 28 */ 29 30#include "opt_debug_1284.h" 31 32#include <sys/param.h> 33#include <sys/systm.h> 34 --- 67 unchanged lines hidden (view full) --- 102int 103nibble_1284_inbyte(struct ppb_device *dev, char *buffer) 104{ 105 char nibble[2]; 106 int i, error; 107 108 for (i = 0; i < 2; i++) { 109 /* ready to take data (nAUTO low) */ |
| 110 ppb_wctr(dev, AUTOFEED | nSTROBE | nINIT | nSELECTIN); | 110 ppb_wctr(dev, AUTOFEED & ~(STROBE | SELECTIN)); |
| 111 112 if ((error = do_1284_wait(dev, nACK, 0))) 113 return (error); 114 115 /* read nibble */ 116 nibble[i] = ppb_rstr(dev); 117 | 111 112 if ((error = do_1284_wait(dev, nACK, 0))) 113 return (error); 114 115 /* read nibble */ 116 nibble[i] = ppb_rstr(dev); 117 |
| 118#ifdef DEBUG_1284 119 printf("nibble_1284_inbyte: nibble[%d]=0x%x\n", i, nibble[i]); 120#endif 121 | |
| 122 /* ack, not ready for another nibble */ | 118 /* ack, not ready for another nibble */ |
| 123 ppb_wctr(dev, nAUTOFEED | nSTROBE | nINIT | nSELECTIN); | 119 ppb_wctr(dev, 0 & ~(AUTOFEED | STROBE | SELECTIN)); |
| 124 125 /* wait ack from peripherial */ 126 if ((error = do_1284_wait(dev, nACK, nACK))) 127 return (error); 128 } 129 130 *buffer = ((nibble2char(nibble[1]) << 4) & 0xf0) | 131 (nibble2char(nibble[0]) & 0x0f); 132 | 120 121 /* wait ack from peripherial */ 122 if ((error = do_1284_wait(dev, nACK, nACK))) 123 return (error); 124 } 125 126 *buffer = ((nibble2char(nibble[1]) << 4) & 0xf0) | 127 (nibble2char(nibble[0]) & 0x0f); 128 |
| 133#ifdef DEBUG_1284 134 printf("nibble_1284_inbyte: byte=0x%x\n", *buffer); 135#endif 136 | |
| 137 return (0); 138} 139 140/* 141 * nibble_1284_sync() 142 */ 143void 144nibble_1284_sync(struct ppb_device *dev) --- 10 unchanged lines hidden (view full) --- 155 do_1284_wait(dev, nACK, nACK); 156 157 ppb_wctr(dev, (ctr & ~AUTOFEED) | SELECTIN); 158 159 return; 160} 161 162/* | 129 return (0); 130} 131 132/* 133 * nibble_1284_sync() 134 */ 135void 136nibble_1284_sync(struct ppb_device *dev) --- 10 unchanged lines hidden (view full) --- 147 do_1284_wait(dev, nACK, nACK); 148 149 ppb_wctr(dev, (ctr & ~AUTOFEED) | SELECTIN); 150 151 return; 152} 153 154/* |
| 163 * nibble_1284_mode() | 155 * ppb_1284_negociate() |
| 164 * 165 * Normal nibble mode or request device id mode (see ppb_1284.h) 166 */ 167int | 156 * 157 * Normal nibble mode or request device id mode (see ppb_1284.h) 158 */ 159int |
| 168nibble_1284_mode(struct ppb_device *dev, int mode) | 160ppb_1284_negociate(struct ppb_device *dev, int mode) |
| 169{ | 161{ |
| 170 char ctrl; | |
| 171 int error; | 162 int error; |
| 163 int phase = 0; |
|
| 172 | 164 |
| 173 ctrl = ppb_rctr(dev); | 165 ppb_wctr(dev, (nINIT | SELECTIN) & ~(STROBE | AUTOFEED)); 166 DELAY(1); |
| 174 175 ppb_wdtr(dev, mode); | 167 168 ppb_wdtr(dev, mode); |
| 176 DELAY(5); | 169 DELAY(1); |
| 177 | 170 |
| 178 ppb_wctr(dev, (ctrl & ~SELECTIN) | AUTOFEED); 179 if ((error = do_1284_wait(dev, nACK | ERROR | SELECT | nFAULT, 180 ERROR | SELECT | nFAULT))) { 181 ppb_wctr(dev, ctrl); 182 return (error); 183 } | 171 ppb_wctr(dev, (nINIT | AUTOFEED) & ~(STROBE | SELECTIN)); |
| 184 | 172 |
| 185 ppb_wctr(dev, ppb_rctr(dev) | STROBE); 186 DELAY(5); | 173 if ((error = do_1284_wait(dev, nACK | PERROR | SELECT | nFAULT, 174 PERROR | SELECT | nFAULT))) 175 goto error; |
| 187 | 176 |
| 188 ppb_wctr(dev, ppb_rctr(dev) & ~STROBE); | 177 phase = 1; 178 179 ppb_wctr(dev, (nINIT | STROBE | AUTOFEED) & ~SELECTIN); |
| 189 DELAY(5); 190 | 180 DELAY(5); 181 |
| 191 ppb_wctr(dev, ppb_rctr(dev) & ~AUTOFEED); | 182 ppb_wctr(dev, nINIT & ~(SELECTIN | AUTOFEED | STROBE)); |
| 192 | 183 |
| 184#if 0 /* not respected by most devices */ 185 if ((error = do_1284_wait(dev, nACK, nACK))) 186 goto error; 187 188 if (mode == 0) 189 if ((error = do_1284_wait(dev, SELECT, 0))) 190 goto error; 191 else 192 if ((error = do_1284_wait(dev, SELECT, SELECT))) 193 goto error; 194#endif 195 |
|
| 193 return (0); | 196 return (0); |
| 197 198error: 199 if (bootverbose) 200 printf("%s: status=0x%x %d\n", __FUNCTION__, ppb_rstr(dev), phase); 201 202 return (error); |
|
| 194} | 203} |
| 204 205int 206ppb_1284_terminate(struct ppb_device *dev, int how) 207{ 208 int error; 209 210 switch (how) { 211 case VALID_STATE: 212 213 ppb_wctr(dev, SELECTIN & ~(STROBE | AUTOFEED)); 214 215 if ((error = do_1284_wait(dev, nACK | nBUSY | nFAULT, nFAULT))) 216 return (error); 217 218 ppb_wctr(dev, (SELECTIN | AUTOFEED) & ~STROBE); 219 220 if ((error = do_1284_wait(dev, nACK, nACK))) 221 return (error); 222 223 ppb_wctr(dev, SELECTIN & ~(STROBE | AUTOFEED)); 224 break; 225 226 default: 227 return (EINVAL); 228 } 229 230 return (0); 231} |
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