linux/drivers/scsi/aic7xxx/aic79xx_proc.c
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   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
  45static 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);
  49static 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 */
  56static 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 */
  71static u_int
  72ahd_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
  92static void
  93ahd_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_puts(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_puts(m, " RDSTRM");
 123                        printed_options++;
 124                }
 125                if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
 126                        seq_puts(m, printed_options ? "|DT" : " DT");
 127                        printed_options++;
 128                }
 129                if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
 130                        seq_puts(m, printed_options ? "|IU" : " IU");
 131                        printed_options++;
 132                }
 133                if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) {
 134                        seq_puts(m, printed_options ? "|RTI" : " RTI");
 135                        printed_options++;
 136                }
 137                if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
 138                        seq_puts(m, printed_options ? "|QAS" : " QAS");
 139                        printed_options++;
 140                }
 141        }
 142
 143        if (tinfo->width > 0) {
 144                if (freq != 0) {
 145                        seq_puts(m, ", ");
 146                } else {
 147                        seq_puts(m, " (");
 148                }
 149                seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
 150        } else if (freq != 0) {
 151                seq_putc(m, ')');
 152        }
 153        seq_putc(m, '\n');
 154}
 155
 156static void
 157ahd_dump_target_state(struct ahd_softc *ahd, struct seq_file *m,
 158                      u_int our_id, char channel, u_int target_id)
 159{
 160        struct  scsi_target *starget;
 161        struct  ahd_initiator_tinfo *tinfo;
 162        struct  ahd_tmode_tstate *tstate;
 163        int     lun;
 164
 165        tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
 166                                    target_id, &tstate);
 167        seq_printf(m, "Target %d Negotiation Settings\n", target_id);
 168        seq_puts(m, "\tUser: ");
 169        ahd_format_transinfo(m, &tinfo->user);
 170        starget = ahd->platform_data->starget[target_id];
 171        if (starget == NULL)
 172                return;
 173
 174        seq_puts(m, "\tGoal: ");
 175        ahd_format_transinfo(m, &tinfo->goal);
 176        seq_puts(m, "\tCurr: ");
 177        ahd_format_transinfo(m, &tinfo->curr);
 178
 179        for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
 180                struct scsi_device *dev;
 181
 182                dev = scsi_device_lookup_by_target(starget, lun);
 183
 184                if (dev == NULL)
 185                        continue;
 186
 187                ahd_dump_device_state(m, dev);
 188        }
 189}
 190
 191static void
 192ahd_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
 193{
 194        struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
 195
 196        seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
 197                  sdev->sdev_target->channel + 'A',
 198                   sdev->sdev_target->id, (u8)sdev->lun);
 199
 200        seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
 201        seq_printf(m, "\t\tCommands Active %d\n", dev->active);
 202        seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
 203        seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
 204        seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
 205}
 206
 207int
 208ahd_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
 209{
 210        struct  ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
 211        ahd_mode_state saved_modes;
 212        int have_seeprom;
 213        u_long s;
 214        int paused;
 215        int written;
 216
 217        /* Default to failure. */
 218        written = -EINVAL;
 219        ahd_lock(ahd, &s);
 220        paused = ahd_is_paused(ahd);
 221        if (!paused)
 222                ahd_pause(ahd);
 223
 224        saved_modes = ahd_save_modes(ahd);
 225        ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
 226        if (length != sizeof(struct seeprom_config)) {
 227                printk("ahd_proc_write_seeprom: incorrect buffer size\n");
 228                goto done;
 229        }
 230
 231        have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer);
 232        if (have_seeprom == 0) {
 233                printk("ahd_proc_write_seeprom: cksum verification failed\n");
 234                goto done;
 235        }
 236
 237        have_seeprom = ahd_acquire_seeprom(ahd);
 238        if (!have_seeprom) {
 239                printk("ahd_proc_write_seeprom: No Serial EEPROM\n");
 240                goto done;
 241        } else {
 242                u_int start_addr;
 243
 244                if (ahd->seep_config == NULL) {
 245                        ahd->seep_config = kmalloc(sizeof(*ahd->seep_config), GFP_ATOMIC);
 246                        if (ahd->seep_config == NULL) {
 247                                printk("aic79xx: Unable to allocate serial "
 248                                       "eeprom buffer.  Write failing\n");
 249                                goto done;
 250                        }
 251                }
 252                printk("aic79xx: Writing Serial EEPROM\n");
 253                start_addr = 32 * (ahd->channel - 'A');
 254                ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr,
 255                                  sizeof(struct seeprom_config)/2);
 256                ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config,
 257                                 start_addr, sizeof(struct seeprom_config)/2,
 258                                 /*ByteStream*/FALSE);
 259                ahd_release_seeprom(ahd);
 260                written = length;
 261        }
 262
 263done:
 264        ahd_restore_modes(ahd, saved_modes);
 265        if (!paused)
 266                ahd_unpause(ahd);
 267        ahd_unlock(ahd, &s);
 268        return (written);
 269}
 270/*
 271 * Return information to handle /proc support for the driver.
 272 */
 273int
 274ahd_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
 275{
 276        struct  ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
 277        char    ahd_info[256];
 278        u_int   max_targ;
 279        u_int   i;
 280
 281        seq_printf(m, "Adaptec AIC79xx driver version: %s\n",
 282                  AIC79XX_DRIVER_VERSION);
 283        seq_printf(m, "%s\n", ahd->description);
 284        ahd_controller_info(ahd, ahd_info);
 285        seq_printf(m, "%s\n", ahd_info);
 286        seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
 287                  ahd->scb_data.numscbs, AHD_NSEG);
 288
 289        max_targ = 16;
 290
 291        if (ahd->seep_config == NULL)
 292                seq_puts(m, "No Serial EEPROM\n");
 293        else {
 294                seq_puts(m, "Serial EEPROM:\n");
 295                for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) {
 296                        if (((i % 8) == 0) && (i != 0)) {
 297                                seq_putc(m, '\n');
 298                        }
 299                        seq_printf(m, "0x%.4x ",
 300                                  ((uint16_t*)ahd->seep_config)[i]);
 301                }
 302                seq_putc(m, '\n');
 303        }
 304        seq_putc(m, '\n');
 305
 306        if ((ahd->features & AHD_WIDE) == 0)
 307                max_targ = 8;
 308
 309        for (i = 0; i < max_targ; i++) {
 310
 311                ahd_dump_target_state(ahd, m, ahd->our_id, 'A',
 312                                      /*target_id*/i);
 313        }
 314        return 0;
 315}
 316