/*
* 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[] = {
{ 0 x08, 625 }, /* FAST-160 */
{ 0 x09, 1250 }, /* FAST-80 */
{ 0 x0a, 2500 }, /* FAST-40 40MHz */
{ 0 x0b, 3030 }, /* FAST-40 33MHz */
{ 0 x0c, 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 *= (0 x01 << 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 * (0 x01 << 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 ;
}
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