scsi/aic7xxx/aic79xx_proc.c

0001 /*
0002  * Copyright (c) 2000-2001 Adaptec Inc.
0003  * All rights reserved.
0004  *
0005  * Redistribution and use in source and binary forms, with or without
0006  * modification, are permitted provided that the following conditions
0007  * are met:
0008  * 1. Redistributions of source code must retain the above copyright
0009  *    notice, this list of conditions, and the following disclaimer,
0010  *    without modification.
0011  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
0012  *    substantially similar to the "NO WARRANTY" disclaimer below
0013  *    ("Disclaimer") and any redistribution must be conditioned upon
0014  *    including a substantially similar Disclaimer requirement for further
0015  *    binary redistribution.
0016  * 3. Neither the names of the above-listed copyright holders nor the names
0017  *    of any contributors may be used to endorse or promote products derived
0018  *    from this software without specific prior written permission.
0019  *
0020  * Alternatively, this software may be distributed under the terms of the
0021  * GNU General Public License ("GPL") version 2 as published by the Free
0022  * Software Foundation.
0023  *
0024  * NO WARRANTY
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
0026  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
0027  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
0028  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
0029  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0030  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0031  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0032  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
0033  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
0034  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGES.
0036  *
0037  * String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr>
0038  * sym driver.
0039  *
0040  * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_proc.c#19 $
0041  */
0042 #include "aic79xx_osm.h"
0043 #include "aic79xx_inline.h"
0044
0045 static void ahd_dump_target_state(struct ahd_softc *ahd,
0046                       struct seq_file *m,
0047                       u_int our_id, char channel,
0048                       u_int target_id);
0049 static void ahd_dump_device_state(struct seq_file *m,
0050                       struct scsi_device *sdev);
0051
0052 /*
0053  * Table of syncrates that don't follow the "divisible by 4"
0054  * rule. This table will be expanded in future SCSI specs.
0055  */
0056 static const struct {
0057     u_int period_factor;
0058     u_int period;   /* in 100ths of ns */
0059 } scsi_syncrates[] = {
0060     { 0x08, 625 },  /* FAST-160 */
0061     { 0x09, 1250 }, /* FAST-80 */
0062     { 0x0a, 2500 }, /* FAST-40 40MHz */
0063     { 0x0b, 3030 }, /* FAST-40 33MHz */
0064     { 0x0c, 5000 }  /* FAST-20 */
0065 };
0066
0067 /*
0068  * Return the frequency in kHz corresponding to the given
0069  * sync period factor.
0070  */
0071 static u_int
0072 ahd_calc_syncsrate(u_int period_factor)
0073 {
0074     int i;
0075
0076     /* See if the period is in the "exception" table */
0077     for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) {
0078
0079         if (period_factor == scsi_syncrates[i].period_factor) {
0080             /* Period in kHz */
0081             return (100000000 / scsi_syncrates[i].period);
0082         }
0083     }
0084
0085     /*
0086      * Wasn't in the table, so use the standard
0087      * 4 times conversion.
0088      */
0089     return (10000000 / (period_factor * 4 * 10));
0090 }
0091
0092 static void
0093 ahd_format_transinfo(struct seq_file *m, struct ahd_transinfo *tinfo)
0094 {
0095     u_int speed;
0096     u_int freq;
0097     u_int mb;
0098
0099     if (tinfo->period == AHD_PERIOD_UNKNOWN) {
0100         seq_puts(m, "Renegotiation Pending\n");
0101         return;
0102     }
0103     speed = 3300;
0104     freq = 0;
0105     if (tinfo->offset != 0) {
0106         freq = ahd_calc_syncsrate(tinfo->period);
0107         speed = freq;
0108     }
0109     speed *= (0x01 << tinfo->width);
0110     mb = speed / 1000;
0111     if (mb > 0)
0112         seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000);
0113     else
0114         seq_printf(m, "%dKB/s transfers", speed);
0115
0116     if (freq != 0) {
0117         int printed_options;
0118
0119         printed_options = 0;
0120         seq_printf(m, " (%d.%03dMHz", freq / 1000, freq % 1000);
0121         if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) {
0122             seq_puts(m, " RDSTRM");
0123             printed_options++;
0124         }
0125         if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
0126             seq_puts(m, printed_options ? "|DT" : " DT");
0127             printed_options++;
0128         }
0129         if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
0130             seq_puts(m, printed_options ? "|IU" : " IU");
0131             printed_options++;
0132         }
0133         if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) {
0134             seq_puts(m, printed_options ? "|RTI" : " RTI");
0135             printed_options++;
0136         }
0137         if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
0138             seq_puts(m, printed_options ? "|QAS" : " QAS");
0139             printed_options++;
0140         }
0141     }
0142
0143     if (tinfo->width > 0) {
0144         if (freq != 0) {
0145             seq_puts(m, ", ");
0146         } else {
0147             seq_puts(m, " (");
0148         }
0149         seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
0150     } else if (freq != 0) {
0151         seq_putc(m, ')');
0152     }
0153     seq_putc(m, '\n');
0154 }
0155
0156 static void
0157 ahd_dump_target_state(struct ahd_softc *ahd, struct seq_file *m,
0158               u_int our_id, char channel, u_int target_id)
0159 {
0160     struct  scsi_target *starget;
0161     struct  ahd_initiator_tinfo *tinfo;
0162     struct  ahd_tmode_tstate *tstate;
0163     int lun;
0164
0165     tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
0166                     target_id, &tstate);
0167     seq_printf(m, "Target %d Negotiation Settings\n", target_id);
0168     seq_puts(m, "\tUser: ");
0169     ahd_format_transinfo(m, &tinfo->user);
0170     starget = ahd->platform_data->starget[target_id];
0171     if (starget == NULL)
0172         return;
0173
0174     seq_puts(m, "\tGoal: ");
0175     ahd_format_transinfo(m, &tinfo->goal);
0176     seq_puts(m, "\tCurr: ");
0177     ahd_format_transinfo(m, &tinfo->curr);
0178
0179     for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
0180         struct scsi_device *dev;
0181
0182         dev = scsi_device_lookup_by_target(starget, lun);
0183
0184         if (dev == NULL)
0185             continue;
0186
0187         ahd_dump_device_state(m, dev);
0188     }
0189 }
0190
0191 static void
0192 ahd_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
0193 {
0194     struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
0195
0196     seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
0197           sdev->sdev_target->channel + 'A',
0198            sdev->sdev_target->id, (u8)sdev->lun);
0199
0200     seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
0201     seq_printf(m, "\t\tCommands Active %d\n", dev->active);
0202     seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
0203     seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
0204     seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
0205 }
0206
0207 int
0208 ahd_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
0209 {
0210     struct  ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
0211     ahd_mode_state saved_modes;
0212     int have_seeprom;
0213     u_long s;
0214     int paused;
0215     int written;
0216
0217     /* Default to failure. */
0218     written = -EINVAL;
0219     ahd_lock(ahd, &s);
0220     paused = ahd_is_paused(ahd);
0221     if (!paused)
0222         ahd_pause(ahd);
0223
0224     saved_modes = ahd_save_modes(ahd);
0225     ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
0226     if (length != sizeof(struct seeprom_config)) {
0227         printk("ahd_proc_write_seeprom: incorrect buffer size\n");
0228         goto done;
0229     }
0230
0231     have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer);
0232     if (have_seeprom == 0) {
0233         printk("ahd_proc_write_seeprom: cksum verification failed\n");
0234         goto done;
0235     }
0236
0237     have_seeprom = ahd_acquire_seeprom(ahd);
0238     if (!have_seeprom) {
0239         printk("ahd_proc_write_seeprom: No Serial EEPROM\n");
0240         goto done;
0241     } else {
0242         u_int start_addr;
0243
0244         if (ahd->seep_config == NULL) {
0245             ahd->seep_config = kmalloc(sizeof(*ahd->seep_config),
0246                            GFP_ATOMIC);
0247             if (ahd->seep_config == NULL) {
0248                 printk("aic79xx: Unable to allocate serial "
0249                        "eeprom buffer.  Write failing\n");
0250                 goto done;
0251             }
0252         }
0253         printk("aic79xx: Writing Serial EEPROM\n");
0254         start_addr = 32 * (ahd->channel - 'A');
0255         ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr,
0256                   sizeof(struct seeprom_config)/2);
0257         ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config,
0258                  start_addr, sizeof(struct seeprom_config)/2,
0259                  /*ByteStream*/FALSE);
0260         ahd_release_seeprom(ahd);
0261         written = length;
0262     }
0263
0264 done:
0265     ahd_restore_modes(ahd, saved_modes);
0266     if (!paused)
0267         ahd_unpause(ahd);
0268     ahd_unlock(ahd, &s);
0269     return (written);
0270 }
0271 /*
0272  * Return information to handle /proc support for the driver.
0273  */
0274 int
0275 ahd_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
0276 {
0277     struct  ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
0278     char    ahd_info[256];
0279     u_int   max_targ;
0280     u_int   i;
0281
0282     seq_printf(m, "Adaptec AIC79xx driver version: %s\n",
0283           AIC79XX_DRIVER_VERSION);
0284     seq_printf(m, "%s\n", ahd->description);
0285     ahd_controller_info(ahd, ahd_info);
0286     seq_printf(m, "%s\n", ahd_info);
0287     seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
0288           ahd->scb_data.numscbs, AHD_NSEG);
0289
0290     max_targ = 16;
0291
0292     if (ahd->seep_config == NULL)
0293         seq_puts(m, "No Serial EEPROM\n");
0294     else {
0295         seq_puts(m, "Serial EEPROM:\n");
0296         for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) {
0297             if (((i % 8) == 0) && (i != 0)) {
0298                 seq_putc(m, '\n');
0299             }
0300             seq_printf(m, "0x%.4x ",
0301                   ((uint16_t*)ahd->seep_config)[i]);
0302         }
0303         seq_putc(m, '\n');
0304     }
0305     seq_putc(m, '\n');
0306
0307     if ((ahd->features & AHD_WIDE) == 0)
0308         max_targ = 8;
0309
0310     for (i = 0; i < max_targ; i++) {
0311
0312         ahd_dump_target_state(ahd, m, ahd->our_id, 'A',
0313                       /*target_id*/i);
0314     }
0315     return 0;
0316 }