drivers/scsi/aic7xxx/aic79xx_proc.c - linux - Git at Google

 /*
  * 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;
 }
	/*
	* 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;
	}