/*
* 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#29 $
*/
#include "aic7xxx_osm.h"
#include "aic7xxx_inline.h"
#include "aic7xxx_93cx6.h"
static void ahc_dump_target_state(struct ahc_softc *ahc,
struct seq_file *m,
u_int our_id, char channel,
u_int target_id, u_int target_offset);
static void ahc_dump_device_state(struct seq_file *m,
struct scsi_device *dev);
/*
* 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
ahc_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
ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
{
u_int speed;
u_int freq;
u_int mb;
speed = 3300 ;
freq = 0 ;
if (tinfo->offset != 0 ) {
freq = ahc_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 ) {
seq_printf(m, " (%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 ) {
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
ahc_dump_target_state(struct ahc_softc *ahc, struct seq_file *m,
u_int our_id, char channel, u_int target_id,
u_int target_offset)
{
struct scsi_target *starget;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
int lun;
tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
target_id, &tstate);
if ((ahc->features & AHC_TWIN) != 0 )
seq_printf(m, "Channel %c " , channel);
seq_printf(m, "Target %d Negotiation Settings\n" , target_id);
seq_puts(m, "\tUser: " );
ahc_format_transinfo(m, &tinfo->user);
starget = ahc->platform_data->starget[target_offset];
if (!starget)
return ;
seq_puts(m, "\tGoal: " );
ahc_format_transinfo(m, &tinfo->goal);
seq_puts(m, "\tCurr: " );
ahc_format_transinfo(m, &tinfo->curr);
for (lun = 0 ; lun < AHC_NUM_LUNS; lun++) {
struct scsi_device *sdev;
sdev = scsi_device_lookup_by_target(starget, lun);
if (sdev == NULL)
continue ;
ahc_dump_device_state(m, sdev);
}
}
static void
ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
{
struct ahc_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
ahc_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
{
struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
struct seeprom_descriptor sd;
int have_seeprom;
u_long s;
int paused;
int written;
/* Default to failure. */
written = -EINVAL;
ahc_lock(ahc, &s);
paused = ahc_is_paused(ahc);
if (!paused)
ahc_pause(ahc);
if (length != sizeof (struct seeprom_config)) {
printk("ahc_proc_write_seeprom: incorrect buffer size\n" );
goto done;
}
have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
if (have_seeprom == 0 ) {
printk("ahc_proc_write_seeprom: cksum verification failed\n" );
goto done;
}
sd.sd_ahc = ahc;
#if AHC_PCI_CONFIG > 0
if ((ahc->chip & AHC_PCI) != 0 ) {
sd.sd_control_offset = SEECTL;
sd.sd_status_offset = SEECTL;
sd.sd_dataout_offset = SEECTL;
if (ahc->flags & AHC_LARGE_SEEPROM)
sd.sd_chip = C56_66;
else
sd.sd_chip = C46;
sd.sd_MS = SEEMS;
sd.sd_RDY = SEERDY;
sd.sd_CS = SEECS;
sd.sd_CK = SEECK;
sd.sd_DO = SEEDO;
sd.sd_DI = SEEDI;
have_seeprom = ahc_acquire_seeprom(ahc, &sd);
} else
#endif
if ((ahc->chip & AHC_VL) != 0 ) {
sd.sd_control_offset = SEECTL_2840;
sd.sd_status_offset = STATUS_2840;
sd.sd_dataout_offset = STATUS_2840;
sd.sd_chip = C46;
sd.sd_MS = 0 ;
sd.sd_RDY = EEPROM_TF;
sd.sd_CS = CS_2840;
sd.sd_CK = CK_2840;
sd.sd_DO = DO_2840;
sd.sd_DI = DI_2840;
have_seeprom = TRUE ;
} else {
printk("ahc_proc_write_seeprom: unsupported adapter type\n" );
goto done;
}
if (!have_seeprom) {
printk("ahc_proc_write_seeprom: No Serial EEPROM\n" );
goto done;
} else {
u_int start_addr;
if (ahc->seep_config == NULL) {
ahc->seep_config = kmalloc(sizeof (*ahc->seep_config),
GFP_ATOMIC);
if (ahc->seep_config == NULL) {
printk("aic7xxx: Unable to allocate serial "
"eeprom buffer. Write failing\n" );
goto done;
}
}
printk("aic7xxx: Writing Serial EEPROM\n" );
start_addr = 32 * (ahc->channel - 'A' );
ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
sizeof (struct seeprom_config)/2 );
ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
start_addr, sizeof (struct seeprom_config)/2 );
#if AHC_PCI_CONFIG > 0
if ((ahc->chip & AHC_VL) == 0 )
ahc_release_seeprom(&sd);
#endif
written = length;
}
done:
if (!paused)
ahc_unpause(ahc);
ahc_unlock(ahc, &s);
return (written);
}
/*
* Return information to handle / proc support for the driver .
*/
int
ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
{
struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
char ahc_info[256 ];
u_int max_targ;
u_int i;
seq_printf(m, "Adaptec AIC7xxx driver version: %s\n" ,
AIC7XXX_DRIVER_VERSION);
seq_printf(m, "%s\n" , ahc->description);
ahc_controller_info(ahc, ahc_info);
seq_printf(m, "%s\n" , ahc_info);
seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n" ,
ahc->scb_data->numscbs, AHC_NSEG);
if (ahc->seep_config == NULL)
seq_puts(m, "No Serial EEPROM\n" );
else {
seq_puts(m, "Serial EEPROM:\n" );
for (i = 0 ; i < sizeof (*ahc->seep_config)/2 ; i++) {
if (((i % 8 ) == 0 ) && (i != 0 )) {
seq_putc(m, '\n' );
}
seq_printf(m, "0x%.4x " ,
((uint16_t*)ahc->seep_config)[i]);
}
seq_putc(m, '\n' );
}
seq_putc(m, '\n' );
max_targ = 16 ;
if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0 )
max_targ = 8 ;
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, m, our_id,
channel, target_id, i);
}
return 0 ;
}
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