scsi/aic7xxx/aic7xxx_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/aic7xxx_proc.c#29 $
0041  */
0042 #include "aic7xxx_osm.h"
0043 #include "aic7xxx_inline.h"
0044 #include "aic7xxx_93cx6.h"
0045
0046 static void ahc_dump_target_state(struct ahc_softc *ahc,
0047                       struct seq_file *m,
0048                       u_int our_id, char channel,
0049                       u_int target_id, u_int target_offset);
0050 static void ahc_dump_device_state(struct seq_file *m,
0051                       struct scsi_device *dev);
0052
0053 /*
0054  * Table of syncrates that don't follow the "divisible by 4"
0055  * rule. This table will be expanded in future SCSI specs.
0056  */
0057 static const struct {
0058     u_int period_factor;
0059     u_int period;   /* in 100ths of ns */
0060 } scsi_syncrates[] = {
0061     { 0x08, 625 },  /* FAST-160 */
0062     { 0x09, 1250 }, /* FAST-80 */
0063     { 0x0a, 2500 }, /* FAST-40 40MHz */
0064     { 0x0b, 3030 }, /* FAST-40 33MHz */
0065     { 0x0c, 5000 }  /* FAST-20 */
0066 };
0067
0068 /*
0069  * Return the frequency in kHz corresponding to the given
0070  * sync period factor.
0071  */
0072 static u_int
0073 ahc_calc_syncsrate(u_int period_factor)
0074 {
0075     int i;
0076
0077     /* See if the period is in the "exception" table */
0078     for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) {
0079
0080         if (period_factor == scsi_syncrates[i].period_factor) {
0081             /* Period in kHz */
0082             return (100000000 / scsi_syncrates[i].period);
0083         }
0084     }
0085
0086     /*
0087      * Wasn't in the table, so use the standard
0088      * 4 times conversion.
0089      */
0090     return (10000000 / (period_factor * 4 * 10));
0091 }
0092
0093 static void
0094 ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
0095 {
0096     u_int speed;
0097     u_int freq;
0098     u_int mb;
0099
0100     speed = 3300;
0101     freq = 0;
0102     if (tinfo->offset != 0) {
0103         freq = ahc_calc_syncsrate(tinfo->period);
0104         speed = freq;
0105     }
0106     speed *= (0x01 << tinfo->width);
0107     mb = speed / 1000;
0108     if (mb > 0)
0109         seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000);
0110     else
0111         seq_printf(m, "%dKB/s transfers", speed);
0112
0113     if (freq != 0) {
0114         seq_printf(m, " (%d.%03dMHz%s, offset %d",
0115              freq / 1000, freq % 1000,
0116              (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
0117              ? " DT" : "", tinfo->offset);
0118     }
0119
0120     if (tinfo->width > 0) {
0121         if (freq != 0) {
0122             seq_puts(m, ", ");
0123         } else {
0124             seq_puts(m, " (");
0125         }
0126         seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
0127     } else if (freq != 0) {
0128         seq_putc(m, ')');
0129     }
0130     seq_putc(m, '\n');
0131 }
0132
0133 static void
0134 ahc_dump_target_state(struct ahc_softc *ahc, struct seq_file *m,
0135               u_int our_id, char channel, u_int target_id,
0136               u_int target_offset)
0137 {
0138     struct  scsi_target *starget;
0139     struct  ahc_initiator_tinfo *tinfo;
0140     struct  ahc_tmode_tstate *tstate;
0141     int lun;
0142
0143     tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
0144                     target_id, &tstate);
0145     if ((ahc->features & AHC_TWIN) != 0)
0146         seq_printf(m, "Channel %c ", channel);
0147     seq_printf(m, "Target %d Negotiation Settings\n", target_id);
0148     seq_puts(m, "\tUser: ");
0149     ahc_format_transinfo(m, &tinfo->user);
0150     starget = ahc->platform_data->starget[target_offset];
0151     if (!starget)
0152         return;
0153
0154     seq_puts(m, "\tGoal: ");
0155     ahc_format_transinfo(m, &tinfo->goal);
0156     seq_puts(m, "\tCurr: ");
0157     ahc_format_transinfo(m, &tinfo->curr);
0158
0159     for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
0160         struct scsi_device *sdev;
0161
0162         sdev = scsi_device_lookup_by_target(starget, lun);
0163
0164         if (sdev == NULL)
0165             continue;
0166
0167         ahc_dump_device_state(m, sdev);
0168     }
0169 }
0170
0171 static void
0172 ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
0173 {
0174     struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
0175
0176     seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
0177           sdev->sdev_target->channel + 'A',
0178            sdev->sdev_target->id, (u8)sdev->lun);
0179
0180     seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
0181     seq_printf(m, "\t\tCommands Active %d\n", dev->active);
0182     seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
0183     seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
0184     seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
0185 }
0186
0187 int
0188 ahc_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
0189 {
0190     struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
0191     struct seeprom_descriptor sd;
0192     int have_seeprom;
0193     u_long s;
0194     int paused;
0195     int written;
0196
0197     /* Default to failure. */
0198     written = -EINVAL;
0199     ahc_lock(ahc, &s);
0200     paused = ahc_is_paused(ahc);
0201     if (!paused)
0202         ahc_pause(ahc);
0203
0204     if (length != sizeof(struct seeprom_config)) {
0205         printk("ahc_proc_write_seeprom: incorrect buffer size\n");
0206         goto done;
0207     }
0208
0209     have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
0210     if (have_seeprom == 0) {
0211         printk("ahc_proc_write_seeprom: cksum verification failed\n");
0212         goto done;
0213     }
0214
0215     sd.sd_ahc = ahc;
0216 #if AHC_PCI_CONFIG > 0
0217     if ((ahc->chip & AHC_PCI) != 0) {
0218         sd.sd_control_offset = SEECTL;
0219         sd.sd_status_offset = SEECTL;
0220         sd.sd_dataout_offset = SEECTL;
0221         if (ahc->flags & AHC_LARGE_SEEPROM)
0222             sd.sd_chip = C56_66;
0223         else
0224             sd.sd_chip = C46;
0225         sd.sd_MS = SEEMS;
0226         sd.sd_RDY = SEERDY;
0227         sd.sd_CS = SEECS;
0228         sd.sd_CK = SEECK;
0229         sd.sd_DO = SEEDO;
0230         sd.sd_DI = SEEDI;
0231         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
0232     } else
0233 #endif
0234     if ((ahc->chip & AHC_VL) != 0) {
0235         sd.sd_control_offset = SEECTL_2840;
0236         sd.sd_status_offset = STATUS_2840;
0237         sd.sd_dataout_offset = STATUS_2840;
0238         sd.sd_chip = C46;
0239         sd.sd_MS = 0;
0240         sd.sd_RDY = EEPROM_TF;
0241         sd.sd_CS = CS_2840;
0242         sd.sd_CK = CK_2840;
0243         sd.sd_DO = DO_2840;
0244         sd.sd_DI = DI_2840;
0245         have_seeprom = TRUE;
0246     } else {
0247         printk("ahc_proc_write_seeprom: unsupported adapter type\n");
0248         goto done;
0249     }
0250
0251     if (!have_seeprom) {
0252         printk("ahc_proc_write_seeprom: No Serial EEPROM\n");
0253         goto done;
0254     } else {
0255         u_int start_addr;
0256
0257         if (ahc->seep_config == NULL) {
0258             ahc->seep_config = kmalloc(sizeof(*ahc->seep_config),
0259                            GFP_ATOMIC);
0260             if (ahc->seep_config == NULL) {
0261                 printk("aic7xxx: Unable to allocate serial "
0262                        "eeprom buffer.  Write failing\n");
0263                 goto done;
0264             }
0265         }
0266         printk("aic7xxx: Writing Serial EEPROM\n");
0267         start_addr = 32 * (ahc->channel - 'A');
0268         ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
0269                   sizeof(struct seeprom_config)/2);
0270         ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
0271                  start_addr, sizeof(struct seeprom_config)/2);
0272 #if AHC_PCI_CONFIG > 0
0273         if ((ahc->chip & AHC_VL) == 0)
0274             ahc_release_seeprom(&sd);
0275 #endif
0276         written = length;
0277     }
0278
0279 done:
0280     if (!paused)
0281         ahc_unpause(ahc);
0282     ahc_unlock(ahc, &s);
0283     return (written);
0284 }
0285
0286 /*
0287  * Return information to handle /proc support for the driver.
0288  */
0289 int
0290 ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
0291 {
0292     struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
0293     char    ahc_info[256];
0294     u_int   max_targ;
0295     u_int   i;
0296
0297     seq_printf(m, "Adaptec AIC7xxx driver version: %s\n",
0298           AIC7XXX_DRIVER_VERSION);
0299     seq_printf(m, "%s\n", ahc->description);
0300     ahc_controller_info(ahc, ahc_info);
0301     seq_printf(m, "%s\n", ahc_info);
0302     seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
0303           ahc->scb_data->numscbs, AHC_NSEG);
0304
0305
0306     if (ahc->seep_config == NULL)
0307         seq_puts(m, "No Serial EEPROM\n");
0308     else {
0309         seq_puts(m, "Serial EEPROM:\n");
0310         for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
0311             if (((i % 8) == 0) && (i != 0)) {
0312                 seq_putc(m, '\n');
0313             }
0314             seq_printf(m, "0x%.4x ",
0315                   ((uint16_t*)ahc->seep_config)[i]);
0316         }
0317         seq_putc(m, '\n');
0318     }
0319     seq_putc(m, '\n');
0320
0321     max_targ = 16;
0322     if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
0323         max_targ = 8;
0324
0325     for (i = 0; i < max_targ; i++) {
0326         u_int our_id;
0327         u_int target_id;
0328         char channel;
0329
0330         channel = 'A';
0331         our_id = ahc->our_id;
0332         target_id = i;
0333         if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
0334             channel = 'B';
0335             our_id = ahc->our_id_b;
0336             target_id = i % 8;
0337         }
0338
0339         ahc_dump_target_state(ahc, m, our_id,
0340                       channel, target_id, i);
0341     }
0342     return 0;
0343 }