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/*
* 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 copy_mem_info(struct info_str *info, char *data, int len);
static int copy_info(struct info_str *info, char *fmt, ...);
static void ahd_dump_target_state(struct ahd_softc *ahd,
struct info_str *info,
u_int our_id, char channel,
u_int target_id);
static void ahd_dump_device_state(struct info_str *info,
struct scsi_device *sdev);
static int ahd_proc_write_seeprom(struct ahd_softc *ahd,
char *buffer, int length);
/*
* 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
copy_mem_info(struct info_str *info, char *data, int len)
{
if (info->pos + len > info->offset + info->length)
len = info->offset + info->length - info->pos;
if (info->pos + len < info->offset) {
info->pos += len;
return;
}
if (info->pos < info->offset) {
off_t partial;
partial = info->offset - info->pos;
data += partial;
info->pos += partial;
len -= partial;
}
if (len > 0) {
memcpy(info->buffer, data, len);
info->pos += len;
info->buffer += len;
}
}
static int
copy_info(struct info_str *info, char *fmt, ...)
{
va_list args;
char buf[256];
int len;
va_start(args, fmt);
len = vsprintf(buf, fmt, args);
va_end(args);
copy_mem_info(info, buf, len);
return (len);
}
static void
ahd_format_transinfo(struct info_str *info, struct ahd_transinfo *tinfo)
{
u_int speed;
u_int freq;
u_int mb;
if (tinfo->period == AHD_PERIOD_UNKNOWN) {
copy_info(info, "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)
copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
else
copy_info(info, "%dKB/s transfers", speed);
if (freq != 0) {
int printed_options;
printed_options = 0;
copy_info(info, " (%d.%03dMHz", freq / 1000, freq % 1000);
if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) {
copy_info(info, " RDSTRM");
printed_options++;
}
if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
copy_info(info, "%s", printed_options ? "|DT" : " DT");
printed_options++;
}
if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
copy_info(info, "%s", printed_options ? "|IU" : " IU");
printed_options++;
}
if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) {
copy_info(info, "%s",
printed_options ? "|RTI" : " RTI");
printed_options++;
}
if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
copy_info(info, "%s",
printed_options ? "|QAS" : " QAS");
printed_options++;
}
}
if (tinfo->width > 0) {
if (freq != 0) {
copy_info(info, ", ");
} else {
copy_info(info, " (");
}
copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
} else if (freq != 0) {
copy_info(info, ")");
}
copy_info(info, "\n");
}
static void
ahd_dump_target_state(struct ahd_softc *ahd, struct info_str *info,
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);
copy_info(info, "Target %d Negotiation Settings\n", target_id);
copy_info(info, "\tUser: ");
ahd_format_transinfo(info, &tinfo->user);
starget = ahd->platform_data->starget[target_id];
if (starget == NULL)
return;
copy_info(info, "\tGoal: ");
ahd_format_transinfo(info, &tinfo->goal);
copy_info(info, "\tCurr: ");
ahd_format_transinfo(info, &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(info, dev);
}
}
static void
ahd_dump_device_state(struct info_str *info, struct scsi_device *sdev)
{
struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
sdev->sdev_target->channel + 'A',
sdev->sdev_target->id, sdev->lun);
copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
copy_info(info, "\t\tCommands Active %d\n",
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