kernel/drivers/scsi/aic7xxx/aic7xxx_proc.c

   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/aic7xxx_proc.c#29 $
  41  */
  42 #include "aic7xxx_osm.h"
  43 #include "aic7xxx_inline.h"
  44 #include "aic7xxx_93cx6.h"
  45
  46 static void     ahc_dump_target_state(struct ahc_softc *ahc,
  47                                       struct seq_file *m,
  48                                       u_int our_id, char channel,
  49                                       u_int target_id, u_int target_offset);
  50 static void     ahc_dump_device_state(struct seq_file *m,
  51                                       struct scsi_device *dev);
  52
  53 /*
  54  * Table of syncrates that don't follow the "divisible by 4"
  55  * rule. This table will be expanded in future SCSI specs.
  56  */
  57 static const struct {
  58         u_int period_factor;
  59         u_int period;   /* in 100ths of ns */
  60 } scsi_syncrates[] = {
  61         { 0x08, 625 },  /* FAST-160 */
  62         { 0x09, 1250 }, /* FAST-80 */
  63         { 0x0a, 2500 }, /* FAST-40 40MHz */
  64         { 0x0b, 3030 }, /* FAST-40 33MHz */
  65         { 0x0c, 5000 }  /* FAST-20 */
  66 };
  67
  68 /*
  69  * Return the frequency in kHz corresponding to the given
  70  * sync period factor.
  71  */
  72 static u_int
  73 ahc_calc_syncsrate(u_int period_factor)
  74 {
  75         int i;
  76
  77         /* See if the period is in the "exception" table */
  78         for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) {
  79
  80                 if (period_factor == scsi_syncrates[i].period_factor) {
  81                         /* Period in kHz */
  82                         return (100000000 / scsi_syncrates[i].period);
  83                 }
  84         }
  85
  86         /*
  87          * Wasn't in the table, so use the standard
  88          * 4 times conversion.
  89          */
  90         return (10000000 / (period_factor * 4 * 10));
  91 }
  92
  93 static void
  94 ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
  95 {
  96         u_int speed;
  97         u_int freq;
  98         u_int mb;
  99
 100         speed = 3300;
 101         freq = 0;
 102         if (tinfo->offset != 0) {
 103                 freq = ahc_calc_syncsrate(tinfo->period);
 104                 speed = freq;
 105         }
 106         speed *= (0x01 << tinfo->width);
 107         mb = speed / 1000;
 108         if (mb > 0)
 109                 seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000);
 110         else
 111                 seq_printf(m, "%dKB/s transfers", speed);
 112
 113         if (freq != 0) {
 114                 seq_printf(m, " (%d.%03dMHz%s, offset %d",
 115                          freq / 1000, freq % 1000,
 116                          (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
 117                          ? " DT" : "", tinfo->offset);
 118         }
 119
 120         if (tinfo->width > 0) {
 121                 if (freq != 0) {
 122                         seq_puts(m, ", ");
 123                 } else {
 124                         seq_puts(m, " (");
 125                 }
 126                 seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
 127         } else if (freq != 0) {
 128                 seq_putc(m, ')');
 129         }
 130         seq_putc(m, '\n');
 131 }
 132
 133 static void
 134 ahc_dump_target_state(struct ahc_softc *ahc, struct seq_file *m,
 135                       u_int our_id, char channel, u_int target_id,
 136                       u_int target_offset)
 137 {
 138         struct  scsi_target *starget;
 139         struct  ahc_initiator_tinfo *tinfo;
 140         struct  ahc_tmode_tstate *tstate;
 141         int     lun;
 142
 143         tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
 144                                     target_id, &tstate);
 145         if ((ahc->features & AHC_TWIN) != 0)
 146                 seq_printf(m, "Channel %c ", channel);
 147         seq_printf(m, "Target %d Negotiation Settings\n", target_id);
 148         seq_puts(m, "\tUser: ");
 149         ahc_format_transinfo(m, &tinfo->user);
 150         starget = ahc->platform_data->starget[target_offset];
 151         if (!starget)
 152                 return;
 153
 154         seq_puts(m, "\tGoal: ");
 155         ahc_format_transinfo(m, &tinfo->goal);
 156         seq_puts(m, "\tCurr: ");
 157         ahc_format_transinfo(m, &tinfo->curr);
 158
 159         for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
 160                 struct scsi_device *sdev;
 161
 162                 sdev = scsi_device_lookup_by_target(starget, lun);
 163
 164                 if (sdev == NULL)
 165                         continue;
 166
 167                 ahc_dump_device_state(m, sdev);
 168         }
 169 }
 170
 171 static void
 172 ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
 173 {
 174         struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
 175
 176         seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
 177                   sdev->sdev_target->channel + 'A',
 178                    sdev->sdev_target->id, (u8)sdev->lun);
 179
 180         seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
 181         seq_printf(m, "\t\tCommands Active %d\n", dev->active);
 182         seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
 183         seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
 184         seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
 185 }
 186
 187 int
 188 ahc_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
 189 {
 190         struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
 191         struct seeprom_descriptor sd;
 192         int have_seeprom;
 193         u_long s;
 194         int paused;
 195         int written;
 196
 197         /* Default to failure. */
 198         written = -EINVAL;
 199         ahc_lock(ahc, &s);
 200         paused = ahc_is_paused(ahc);
 201         if (!paused)
 202                 ahc_pause(ahc);
 203
 204         if (length != sizeof(struct seeprom_config)) {
 205                 printk("ahc_proc_write_seeprom: incorrect buffer size\n");
 206                 goto done;
 207         }
 208
 209         have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
 210         if (have_seeprom == 0) {
 211                 printk("ahc_proc_write_seeprom: cksum verification failed\n");
 212                 goto done;
 213         }
 214
 215         sd.sd_ahc = ahc;
 216 #if AHC_PCI_CONFIG > 0
 217         if ((ahc->chip & AHC_PCI) != 0) {
 218                 sd.sd_control_offset = SEECTL;
 219                 sd.sd_status_offset = SEECTL;
 220                 sd.sd_dataout_offset = SEECTL;
 221                 if (ahc->flags & AHC_LARGE_SEEPROM)
 222                         sd.sd_chip = C56_66;
 223                 else
 224                         sd.sd_chip = C46;
 225                 sd.sd_MS = SEEMS;
 226                 sd.sd_RDY = SEERDY;
 227                 sd.sd_CS = SEECS;
 228                 sd.sd_CK = SEECK;
 229                 sd.sd_DO = SEEDO;
 230                 sd.sd_DI = SEEDI;
 231                 have_seeprom = ahc_acquire_seeprom(ahc, &sd);
 232         } else
 233 #endif
 234         if ((ahc->chip & AHC_VL) != 0) {
 235                 sd.sd_control_offset = SEECTL_2840;
 236                 sd.sd_status_offset = STATUS_2840;
 237                 sd.sd_dataout_offset = STATUS_2840;
 238                 sd.sd_chip = C46;
 239                 sd.sd_MS = 0;
 240                 sd.sd_RDY = EEPROM_TF;
 241                 sd.sd_CS = CS_2840;
 242                 sd.sd_CK = CK_2840;
 243                 sd.sd_DO = DO_2840;
 244                 sd.sd_DI = DI_2840;
 245                 have_seeprom = TRUE;
 246         } else {
 247                 printk("ahc_proc_write_seeprom: unsupported adapter type\n");
 248                 goto done;
 249         }
 250
 251         if (!have_seeprom) {
 252                 printk("ahc_proc_write_seeprom: No Serial EEPROM\n");
 253                 goto done;
 254         } else {
 255                 u_int start_addr;
 256
 257                 if (ahc->seep_config == NULL) {
 258                         ahc->seep_config = kmalloc(sizeof(*ahc->seep_config), GFP_ATOMIC);
 259                         if (ahc->seep_config == NULL) {
 260                                 printk("aic7xxx: Unable to allocate serial "
 261                                        "eeprom buffer.  Write failing\n");
 262                                 goto done;
 263                         }
 264                 }
 265                 printk("aic7xxx: Writing Serial EEPROM\n");
 266                 start_addr = 32 * (ahc->channel - 'A');
 267                 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
 268                                   sizeof(struct seeprom_config)/2);
 269                 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
 270                                  start_addr, sizeof(struct seeprom_config)/2);
 271 #if AHC_PCI_CONFIG > 0
 272                 if ((ahc->chip & AHC_VL) == 0)
 273                         ahc_release_seeprom(&sd);
 274 #endif
 275                 written = length;
 276         }
 277
 278 done:
 279         if (!paused)
 280                 ahc_unpause(ahc);
 281         ahc_unlock(ahc, &s);
 282         return (written);
 283 }
 284
 285 /*
 286  * Return information to handle /proc support for the driver.
 287  */
 288 int
 289 ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
 290 {
 291         struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
 292         char    ahc_info[256];
 293         u_int   max_targ;
 294         u_int   i;
 295
 296         seq_printf(m, "Adaptec AIC7xxx driver version: %s\n",
 297                   AIC7XXX_DRIVER_VERSION);
 298         seq_printf(m, "%s\n", ahc->description);
 299         ahc_controller_info(ahc, ahc_info);
 300         seq_printf(m, "%s\n", ahc_info);
 301         seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
 302                   ahc->scb_data->numscbs, AHC_NSEG);
 303
 304
 305         if (ahc->seep_config == NULL)
 306                 seq_puts(m, "No Serial EEPROM\n");
 307         else {
 308                 seq_puts(m, "Serial EEPROM:\n");
 309                 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
 310                         if (((i % 8) == 0) && (i != 0)) {
 311                                 seq_putc(m, '\n');
 312                         }
 313                         seq_printf(m, "0x%.4x ",
 314                                   ((uint16_t*)ahc->seep_config)[i]);
 315                 }
 316                 seq_putc(m, '\n');
 317         }
 318         seq_putc(m, '\n');
 319
 320         max_targ = 16;
 321         if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
 322                 max_targ = 8;
 323
 324         for (i = 0; i < max_targ; i++) {
 325                 u_int our_id;
 326                 u_int target_id;
 327                 char channel;
 328
 329                 channel = 'A';
 330                 our_id = ahc->our_id;
 331                 target_id = i;
 332                 if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
 333                         channel = 'B';
 334                         our_id = ahc->our_id_b;
 335                         target_id = i % 8;
 336                 }
 337
 338                 ahc_dump_target_state(ahc, m, our_id,
 339                                       channel, target_id, i);
 340         }
 341         return 0;
 342 }