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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/aic7xxx_proc.c#13 $
*/
#include "aic7xxx_osm.h"
#include "aic7xxx_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 u_int scsi_calc_syncsrate(u_int period_factor);
static void ahc_dump_target_state(struct ahc_softc *ahc,
struct info_str *info,
u_int our_id, char channel,
u_int target_id, u_int target_offset);
static void ahc_dump_device_state(struct info_str *info,
struct ahc_linux_device *dev);
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);
}
/*
* Table of syncrates that don't follow the "divisible by 4"
* rule. This table will be expanded in future SCSI specs.
*/
static struct {
u_int period_factor;
u_int period; /* in 10ths of ns */
} scsi_syncrates[] = {
{ 0x09, 125 }, /* FAST-80 */
{ 0x0a, 250 }, /* FAST-40 40MHz */
{ 0x0b, 303 }, /* FAST-40 33MHz */
{ 0x0c, 500 } /* FAST-20 */
};
/*
* Return the frequency in kHz corresponding to the given
* sync period factor.
*/
static u_int
scsi_calc_syncsrate(u_int period_factor)
{
int i;
int num_syncrates;
num_syncrates = sizeof(scsi_syncrates) / sizeof(scsi_syncrates[0]);
/* See if the period is in the "exception" table */
for (i = 0; i < num_syncrates; i++) {
if (period_factor == scsi_syncrates[i].period_factor) {
/* Period in kHz */
return (10000000 / scsi_syncrates[i].period);
}
}
/*
* Wasn't in the table, so use the standard
* 4 times conversion.
*/
return (10000000 / (period_factor * 4 * 10));
}
void
ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo)
{
u_int speed;
u_int freq;
u_int mb;
speed = 3300;
freq = 0;
if (tinfo->offset != 0) {
freq = scsi_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) {
copy_info(info, " (%d.%03dMHz%s, offset %d",
freq / 1000, freq % 1000,
(tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
? " DT" : "", tinfo->offset);
}
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
ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
u_int our_id, char channel, u_int target_id,
u_int target_offset)
{
struct ahc_linux_target *targ;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
int lun;
tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
target_id, &tstate);
copy_info(info, "Channel %c Target %d Negotiation Settings\n",
channel, target_id);
copy_info(info, "\tUser: ");
ahc_format_transinfo(info, &tinfo->user);
targ = ahc->platform_data->targets[target_offset];
if (targ == NULL)
return;
copy_info(info, "\tGoal: ");
ahc_format_transinfo(info, &tinfo->goal);
copy_info(info, "\tCurr: ");
ahc_format_transinfo(info, &tinfo->curr);
for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
struct ahc_linux_device *dev;
dev = targ->devices[lun];
if (dev == NULL)
continue;
ahc_dump_device_state(info, dev);
}
}
static void
ahc_dump_device_state(struct info_str *info, struct ahc_linux_device *dev)
{
copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
dev->target->channel + 'A', dev->target->target, dev->lun);
copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
copy_info(info, "\t\tCommands Active %d\n", dev->active);
copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
}
/*
* Return information to handle /proc support for the driver.
*/
int
ahc_linux_proc_info(char *buffer, char **start, off_t offset,
int length, int hostno, int inout)
{
struct ahc_softc *ahc;
struct info_str info;
char ahc_info[256];
u_int max_targ;
u_int i;
TAILQ_FOREACH(ahc, &ahc_tailq, links) {
if (ahc->platform_data->host->host_no == hostno)
break;
}
if (ahc == NULL)
return (-EINVAL);
/* Has data been written to the file? */
if (inout == TRUE)
return (-ENOSYS);
if (start)
*start = buffer;
info.buffer = buffer;
info.length = length;
info.offset = offset;
info.pos = 0;
copy_info(&info, "Adaptec AIC7xxx driver version: %s\n",
AIC7XXX_DRIVER_VERSION);
ahc_controller_info(ahc, ahc_info);
copy_info(&info, "%s\n", ahc_info);
max_targ = 15;
if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
max_targ = 7;
for (i = 0; i <= max_targ; i++) {
u_int our_id;
u_int target_id;
char channel;
channel = 'A';
our_id = ahc->our_id;
target_id = i;
if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
channel = 'B';
our_id = ahc->our_id_b;
target_id = i % 8;
}
ahc_dump_target_state(ahc, &info, our_id,
channel, target_id, i);
}
return (info.pos > info.offset ? info.pos - info.offset : 0);
}
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