1 /* 2 * Copyright (c) 2000-2001 Adaptec Inc. 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 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 3. Neither the names of the above-listed copyright holders nor the names 17 * of any contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * NO WARRANTY 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 34 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGES. 36 * 37 * String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr> 38 * sym driver. 39 * 40 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_proc.c#19 $ 41 */ 42 #include "aic79xx_osm.h" 43 #include "aic79xx_inline.h" 44 45 static void ahd_dump_target_state(struct ahd_softc *ahd, 46 struct seq_file *m, 47 u_int our_id, char channel, 48 u_int target_id); 49 static void ahd_dump_device_state(struct seq_file *m, 50 struct scsi_device *sdev); 51 52 /* 53 * Table of syncrates that don't follow the "divisible by 4" 54 * rule. This table will be expanded in future SCSI specs. 55 */ 56 static const struct { 57 u_int period_factor; 58 u_int period; /* in 100ths of ns */ 59 } scsi_syncrates[] = { 60 { 0x08, 625 }, /* FAST-160 */ 61 { 0x09, 1250 }, /* FAST-80 */ 62 { 0x0a, 2500 }, /* FAST-40 40MHz */ 63 { 0x0b, 3030 }, /* FAST-40 33MHz */ 64 { 0x0c, 5000 } /* FAST-20 */ 65 }; 66 67 /* 68 * Return the frequency in kHz corresponding to the given 69 * sync period factor. 70 */ 71 static u_int 72 ahd_calc_syncsrate(u_int period_factor) 73 { 74 int i; 75 76 /* See if the period is in the "exception" table */ 77 for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) { 78 79 if (period_factor == scsi_syncrates[i].period_factor) { 80 /* Period in kHz */ 81 return (100000000 / scsi_syncrates[i].period); 82 } 83 } 84 85 /* 86 * Wasn't in the table, so use the standard 87 * 4 times conversion. 88 */ 89 return (10000000 / (period_factor * 4 * 10)); 90 } 91 92 static void 93 ahd_format_transinfo(struct seq_file *m, struct ahd_transinfo *tinfo) 94 { 95 u_int speed; 96 u_int freq; 97 u_int mb; 98 99 if (tinfo->period == AHD_PERIOD_UNKNOWN) { 100 seq_printf(m, "Renegotiation Pending\n"); 101 return; 102 } 103 speed = 3300; 104 freq = 0; 105 if (tinfo->offset != 0) { 106 freq = ahd_calc_syncsrate(tinfo->period); 107 speed = freq; 108 } 109 speed *= (0x01 << tinfo->width); 110 mb = speed / 1000; 111 if (mb > 0) 112 seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000); 113 else 114 seq_printf(m, "%dKB/s transfers", speed); 115 116 if (freq != 0) { 117 int printed_options; 118 119 printed_options = 0; 120 seq_printf(m, " (%d.%03dMHz", freq / 1000, freq % 1000); 121 if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { 122 seq_printf(m, " RDSTRM"); 123 printed_options++; 124 } 125 if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { 126 seq_printf(m, "%s", printed_options ? "|DT" : " DT"); 127 printed_options++; 128 } 129 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 130 seq_printf(m, "%s", printed_options ? "|IU" : " IU"); 131 printed_options++; 132 } 133 if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) { 134 seq_printf(m, "%s", 135 printed_options ? "|RTI" : " RTI"); 136 printed_options++; 137 } 138 if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { 139 seq_printf(m, "%s", 140 printed_options ? "|QAS" : " QAS"); 141 printed_options++; 142 } 143 } 144 145 if (tinfo->width > 0) { 146 if (freq != 0) { 147 seq_printf(m, ", "); 148 } else { 149 seq_printf(m, " ("); 150 } 151 seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width)); 152 } else if (freq != 0) { 153 seq_printf(m, ")"); 154 } 155 seq_printf(m, "\n"); 156 } 157 158 static void 159 ahd_dump_target_state(struct ahd_softc *ahd, struct seq_file *m, 160 u_int our_id, char channel, u_int target_id) 161 { 162 struct scsi_target *starget; 163 struct ahd_initiator_tinfo *tinfo; 164 struct ahd_tmode_tstate *tstate; 165 int lun; 166 167 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, 168 target_id, &tstate); 169 seq_printf(m, "Target %d Negotiation Settings\n", target_id); 170 seq_printf(m, "\tUser: "); 171 ahd_format_transinfo(m, &tinfo->user); 172 starget = ahd->platform_data->starget[target_id]; 173 if (starget == NULL) 174 return; 175 176 seq_printf(m, "\tGoal: "); 177 ahd_format_transinfo(m, &tinfo->goal); 178 seq_printf(m, "\tCurr: "); 179 ahd_format_transinfo(m, &tinfo->curr); 180 181 for (lun = 0; lun < AHD_NUM_LUNS; lun++) { 182 struct scsi_device *dev; 183 184 dev = scsi_device_lookup_by_target(starget, lun); 185 186 if (dev == NULL) 187 continue; 188 189 ahd_dump_device_state(m, dev); 190 } 191 } 192 193 static void 194 ahd_dump_device_state(struct seq_file *m, struct scsi_device *sdev) 195 { 196 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 197 198 seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n", 199 sdev->sdev_target->channel + 'A', 200 sdev->sdev_target->id, sdev->lun); 201 202 seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued); 203 seq_printf(m, "\t\tCommands Active %d\n", dev->active); 204 seq_printf(m, "\t\tCommand Openings %d\n", dev->openings); 205 seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags); 206 seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen); 207 } 208 209 int 210 ahd_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length) 211 { 212 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; 213 ahd_mode_state saved_modes; 214 int have_seeprom; 215 u_long s; 216 int paused; 217 int written; 218 219 /* Default to failure. */ 220 written = -EINVAL; 221 ahd_lock(ahd, &s); 222 paused = ahd_is_paused(ahd); 223 if (!paused) 224 ahd_pause(ahd); 225 226 saved_modes = ahd_save_modes(ahd); 227 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 228 if (length != sizeof(struct seeprom_config)) { 229 printk("ahd_proc_write_seeprom: incorrect buffer size\n"); 230 goto done; 231 } 232 233 have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer); 234 if (have_seeprom == 0) { 235 printk("ahd_proc_write_seeprom: cksum verification failed\n"); 236 goto done; 237 } 238 239 have_seeprom = ahd_acquire_seeprom(ahd); 240 if (!have_seeprom) { 241 printk("ahd_proc_write_seeprom: No Serial EEPROM\n"); 242 goto done; 243 } else { 244 u_int start_addr; 245 246 if (ahd->seep_config == NULL) { 247 ahd->seep_config = kmalloc(sizeof(*ahd->seep_config), GFP_ATOMIC); 248 if (ahd->seep_config == NULL) { 249 printk("aic79xx: Unable to allocate serial " 250 "eeprom buffer. Write failing\n"); 251 goto done; 252 } 253 } 254 printk("aic79xx: Writing Serial EEPROM\n"); 255 start_addr = 32 * (ahd->channel - 'A'); 256 ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr, 257 sizeof(struct seeprom_config)/2); 258 ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config, 259 start_addr, sizeof(struct seeprom_config)/2, 260 /*ByteStream*/FALSE); 261 ahd_release_seeprom(ahd); 262 written = length; 263 } 264 265 done: 266 ahd_restore_modes(ahd, saved_modes); 267 if (!paused) 268 ahd_unpause(ahd); 269 ahd_unlock(ahd, &s); 270 return (written); 271 } 272 /* 273 * Return information to handle /proc support for the driver. 274 */ 275 int 276 ahd_linux_show_info(struct seq_file *m, struct Scsi_Host *shost) 277 { 278 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; 279 char ahd_info[256]; 280 u_int max_targ; 281 u_int i; 282 283 seq_printf(m, "Adaptec AIC79xx driver version: %s\n", 284 AIC79XX_DRIVER_VERSION); 285 seq_printf(m, "%s\n", ahd->description); 286 ahd_controller_info(ahd, ahd_info); 287 seq_printf(m, "%s\n", ahd_info); 288 seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n", 289 ahd->scb_data.numscbs, AHD_NSEG); 290 291 max_targ = 16; 292 293 if (ahd->seep_config == NULL) 294 seq_printf(m, "No Serial EEPROM\n"); 295 else { 296 seq_printf(m, "Serial EEPROM:\n"); 297 for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) { 298 if (((i % 8) == 0) && (i != 0)) { 299 seq_printf(m, "\n"); 300 } 301 seq_printf(m, "0x%.4x ", 302 ((uint16_t*)ahd->seep_config)[i]); 303 } 304 seq_printf(m, "\n"); 305 } 306 seq_printf(m, "\n"); 307 308 if ((ahd->features & AHD_WIDE) == 0) 309 max_targ = 8; 310 311 for (i = 0; i < max_targ; i++) { 312 313 ahd_dump_target_state(ahd, m, ahd->our_id, 'A', 314 /*target_id*/i); 315 } 316 return 0; 317 } 318