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Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_proc.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_proc.c b/drivers/scsi/aic7xxx/aic79xx_proc.c new file mode 100644 index 000000000..add2da581 --- /dev/null +++ b/drivers/scsi/aic7xxx/aic79xx_proc.c @@ -0,0 +1,315 @@ +/* + * Copyright (c) 2000-2001 Adaptec Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + * String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr> + * sym driver. + * + * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_proc.c#19 $ + */ +#include "aic79xx_osm.h" +#include "aic79xx_inline.h" + +static void ahd_dump_target_state(struct ahd_softc *ahd, + struct seq_file *m, + u_int our_id, char channel, + u_int target_id); +static void ahd_dump_device_state(struct seq_file *m, + struct scsi_device *sdev); + +/* + * Table of syncrates that don't follow the "divisible by 4" + * rule. This table will be expanded in future SCSI specs. + */ +static const struct { + u_int period_factor; + u_int period; /* in 100ths of ns */ +} scsi_syncrates[] = { + { 0x08, 625 }, /* FAST-160 */ + { 0x09, 1250 }, /* FAST-80 */ + { 0x0a, 2500 }, /* FAST-40 40MHz */ + { 0x0b, 3030 }, /* FAST-40 33MHz */ + { 0x0c, 5000 } /* FAST-20 */ +}; + +/* + * Return the frequency in kHz corresponding to the given + * sync period factor. + */ +static u_int +ahd_calc_syncsrate(u_int period_factor) +{ + int i; + + /* See if the period is in the "exception" table */ + for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) { + + if (period_factor == scsi_syncrates[i].period_factor) { + /* Period in kHz */ + return (100000000 / scsi_syncrates[i].period); + } + } + + /* + * Wasn't in the table, so use the standard + * 4 times conversion. + */ + return (10000000 / (period_factor * 4 * 10)); +} + +static void +ahd_format_transinfo(struct seq_file *m, struct ahd_transinfo *tinfo) +{ + u_int speed; + u_int freq; + u_int mb; + + if (tinfo->period == AHD_PERIOD_UNKNOWN) { + seq_puts(m, "Renegotiation Pending\n"); + return; + } + speed = 3300; + freq = 0; + if (tinfo->offset != 0) { + freq = ahd_calc_syncsrate(tinfo->period); + speed = freq; + } + speed *= (0x01 << tinfo->width); + mb = speed / 1000; + if (mb > 0) + seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000); + else + seq_printf(m, "%dKB/s transfers", speed); + + if (freq != 0) { + int printed_options; + + printed_options = 0; + seq_printf(m, " (%d.%03dMHz", freq / 1000, freq % 1000); + if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { + seq_puts(m, " RDSTRM"); + printed_options++; + } + if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { + seq_puts(m, printed_options ? "|DT" : " DT"); + printed_options++; + } + if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { + seq_puts(m, printed_options ? "|IU" : " IU"); + printed_options++; + } + if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) { + seq_puts(m, printed_options ? "|RTI" : " RTI"); + printed_options++; + } + if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { + seq_puts(m, printed_options ? "|QAS" : " QAS"); + printed_options++; + } + } + + if (tinfo->width > 0) { + if (freq != 0) { + seq_puts(m, ", "); + } else { + seq_puts(m, " ("); + } + seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width)); + } else if (freq != 0) { + seq_putc(m, ')'); + } + seq_putc(m, '\n'); +} + +static void +ahd_dump_target_state(struct ahd_softc *ahd, struct seq_file *m, + u_int our_id, char channel, u_int target_id) +{ + struct scsi_target *starget; + struct ahd_initiator_tinfo *tinfo; + struct ahd_tmode_tstate *tstate; + int lun; + + tinfo = ahd_fetch_transinfo(ahd, channel, our_id, + target_id, &tstate); + seq_printf(m, "Target %d Negotiation Settings\n", target_id); + seq_puts(m, "\tUser: "); + ahd_format_transinfo(m, &tinfo->user); + starget = ahd->platform_data->starget[target_id]; + if (starget == NULL) + return; + + seq_puts(m, "\tGoal: "); + ahd_format_transinfo(m, &tinfo->goal); + seq_puts(m, "\tCurr: "); + ahd_format_transinfo(m, &tinfo->curr); + + for (lun = 0; lun < AHD_NUM_LUNS; lun++) { + struct scsi_device *dev; + + dev = scsi_device_lookup_by_target(starget, lun); + + if (dev == NULL) + continue; + + ahd_dump_device_state(m, dev); + } +} + +static void +ahd_dump_device_state(struct seq_file *m, struct scsi_device *sdev) +{ + struct ahd_linux_device *dev = scsi_transport_device_data(sdev); + + seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n", + sdev->sdev_target->channel + 'A', + sdev->sdev_target->id, (u8)sdev->lun); + + seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued); + seq_printf(m, "\t\tCommands Active %d\n", dev->active); + seq_printf(m, "\t\tCommand Openings %d\n", dev->openings); + seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags); + seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen); +} + +int +ahd_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length) +{ + struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; + ahd_mode_state saved_modes; + int have_seeprom; + u_long s; + int paused; + int written; + + /* Default to failure. */ + written = -EINVAL; + ahd_lock(ahd, &s); + paused = ahd_is_paused(ahd); + if (!paused) + ahd_pause(ahd); + + saved_modes = ahd_save_modes(ahd); + ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); + if (length != sizeof(struct seeprom_config)) { + printk("ahd_proc_write_seeprom: incorrect buffer size\n"); + goto done; + } + + have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer); + if (have_seeprom == 0) { + printk("ahd_proc_write_seeprom: cksum verification failed\n"); + goto done; + } + + have_seeprom = ahd_acquire_seeprom(ahd); + if (!have_seeprom) { + printk("ahd_proc_write_seeprom: No Serial EEPROM\n"); + goto done; + } else { + u_int start_addr; + + if (ahd->seep_config == NULL) { + ahd->seep_config = kmalloc(sizeof(*ahd->seep_config), GFP_ATOMIC); + if (ahd->seep_config == NULL) { + printk("aic79xx: Unable to allocate serial " + "eeprom buffer. Write failing\n"); + goto done; + } + } + printk("aic79xx: Writing Serial EEPROM\n"); + start_addr = 32 * (ahd->channel - 'A'); + ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr, + sizeof(struct seeprom_config)/2); + ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config, + start_addr, sizeof(struct seeprom_config)/2, + /*ByteStream*/FALSE); + ahd_release_seeprom(ahd); + written = length; + } + +done: + ahd_restore_modes(ahd, saved_modes); + if (!paused) + ahd_unpause(ahd); + ahd_unlock(ahd, &s); + return (written); +} +/* + * Return information to handle /proc support for the driver. + */ +int +ahd_linux_show_info(struct seq_file *m, struct Scsi_Host *shost) +{ + struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; + char ahd_info[256]; + u_int max_targ; + u_int i; + + seq_printf(m, "Adaptec AIC79xx driver version: %s\n", + AIC79XX_DRIVER_VERSION); + seq_printf(m, "%s\n", ahd->description); + ahd_controller_info(ahd, ahd_info); + seq_printf(m, "%s\n", ahd_info); + seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n", + ahd->scb_data.numscbs, AHD_NSEG); + + max_targ = 16; + + if (ahd->seep_config == NULL) + seq_puts(m, "No Serial EEPROM\n"); + else { + seq_puts(m, "Serial EEPROM:\n"); + for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) { + if (((i % 8) == 0) && (i != 0)) { + seq_putc(m, '\n'); + } + seq_printf(m, "0x%.4x ", + ((uint16_t*)ahd->seep_config)[i]); + } + seq_putc(m, '\n'); + } + seq_putc(m, '\n'); + + if ((ahd->features & AHD_WIDE) == 0) + max_targ = 8; + + for (i = 0; i < max_targ; i++) { + + ahd_dump_target_state(ahd, m, ahd->our_id, 'A', + /*target_id*/i); + } + return 0; +} |