aic79xx_osm.c revision a80b3424d9fde3c4b6d62adaf6dda78128dc5c27
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Adaptec AIC79xx device driver for Linux.
31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $
51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * --------------------------------------------------------------------------
71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 1994-2000 Justin T. Gibbs.
81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 1997-1999 Doug Ledford
91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2000-2003 Adaptec Inc.
101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All rights reserved.
111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Redistribution and use in source and binary forms, with or without
131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modification, are permitted provided that the following conditions
141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are met:
151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Redistributions of source code must retain the above copyright
161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    notice, this list of conditions, and the following disclaimer,
171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    without modification.
181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. Redistributions in binary form must reproduce at minimum a disclaimer
191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    substantially similar to the "NO WARRANTY" disclaimer below
201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    ("Disclaimer") and any redistribution must be conditioned upon
211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    including a substantially similar Disclaimer requirement for further
221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    binary redistribution.
231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. Neither the names of the above-listed copyright holders nor the names
241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    of any contributors may be used to endorse or promote products derived
251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *    from this software without specific prior written permission.
261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Alternatively, this software may be distributed under the terms of the
281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License ("GPL") version 2 as published by the Free
291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Software Foundation.
301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NO WARRANTY
321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * POSSIBILITY OF SUCH DAMAGES.
431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "aic79xx_osm.h"
461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "aic79xx_inline.h"
471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsicam.h>
481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic struct scsi_transport_template *ahd_linux_transport_template = NULL;
5073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Include aiclib.c as part of our
531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "module dependencies are hard" work around.
541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "aiclib.c"
561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h>		/* __setup */
581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h>		/* For fetching system memory size */
5973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#include <linux/blkdev.h>		/* For block_size() */
601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h>	/* For ssleep/msleep */
611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Lock protecting manipulation of the ahd softc list.
641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsspinlock_t ahd_list_spinlock;
661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bucket size for counting good commands in between bad ones.
691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AHD_LINUX_ERR_THRESH	1000
711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set this to the delay in seconds after SCSI bus reset.
741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note, we honor this only for the initial bus reset.
751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The scsi error recovery code performs its own bus settle
761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * delay handling for error recovery actions.
771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_AIC79XX_RESET_DELAY_MS
791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else
811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_RESET_DELAY 5000
821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * To change the default number of tagged transactions allowed per-device,
861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * add a line to the lilo.conf file like:
871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which will result in the first four devices on the first two
891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * controllers being set to a tagged queue depth of 32.
901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The tag_commands is an array of 16 to allow for wide and twin adapters.
921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for channel 1.
941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct {
961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	uint16_t tag_commands[16];	/* Allow for wide/twin adapters. */
971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} adapter_tag_info_t;
981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modify this as you see fit for your system.
1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0			tagged queuing disabled
1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1 <= n <= 253	n == max tags ever dispatched.
1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The driver will throttle the number of commands dispatched to a
1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device if it returns queue full.  For devices with a fixed maximum
1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queue depth, the driver will eventually determine this depth and
1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * lock it in (a console message is printed to indicate that a lock
1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * has occurred).  On some devices, queue full is returned for a temporary
1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * resource shortage.  These devices will return queue full at varying
1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * depths.  The driver will throttle back when the queue fulls occur and
1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attempt to slowly increase the depth over time as the device recovers
1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from the resource shortage.
1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * In this example, the first line will disable tagged queueing for all
1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the devices on the first probed aic79xx adapter.
1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The second line enables tagged queueing with 4 commands/LUN for IDs
1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * driver to attempt to use up to 64 tags for ID 1.
1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The third line is the same as the first line.
1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The fourth line disables tagged queueing for devices 0 and 3.  It
1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * enables tagged queueing for the other IDs, with 16 commands/LUN
1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IDs 2, 5-7, and 9-15.
1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: The below structure is for reference only, the actual structure
1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *       to modify in order to change things is just below this comment block.
1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsadapter_tag_info_t aic79xx_tag_info[] =
1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/
1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else
1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_CONFIGED_TAG_COMMANDS {					\
1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE,		\
1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE		\
1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * By default, use the number of commands specified by
1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the users kernel configuration.
1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic adapter_tag_info_t aic79xx_tag_info[] =
1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS},
1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{AIC79XX_CONFIGED_TAG_COMMANDS}
1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The I/O cell on the chip is very configurable in respect to its analog
1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * characteristics.  Set the defaults here; they can be overriden with
1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the proper insmod parameters.
1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct ahd_linux_iocell_opts
1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	uint8_t	precomp;
1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	uint8_t	slewrate;
1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	uint8_t amplitude;
1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_DEFAULT_PRECOMP		0xFF
1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_DEFAULT_SLEWRATE	0xFF
1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_DEFAULT_AMPLITUDE	0xFF
1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_DEFAULT_IOOPTS			\
1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{						\
1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_PRECOMP,		\
2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_SLEWRATE,		\
2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_AMPLITUDE		\
2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_PRECOMP_INDEX	0
2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_SLEWRATE_INDEX	1
2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AIC79XX_AMPLITUDE_INDEX	2
2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS,
2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	AIC79XX_DEFAULT_IOOPTS
2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * There should be a specific return value for this in scsi.h, but
2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it seems that most drivers ignore it.
2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DID_UNDERFLOW   DID_ERROR
2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid
2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_print_path(struct ahd_softc *ahd, struct scb *scb)
2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	printk("(scsi%d:%c:%d:%d): ",
2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	       ahd->platform_data->host->host_no,
2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	       scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X',
2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	       scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1,
2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	       scb != NULL ? SCB_GET_LUN(scb) : -1);
2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * XXX - these options apply unilaterally to _all_ adapters
2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *       cards in the system.  This should be fixed.  Exceptions to this
2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *       rule are noted in the comments.
2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Skip the scsi bus reset.  Non 0 make us skip the reset at startup.  This
2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * has no effect on any later resets that might occur due to things like
2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCSI bus timeouts.
2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic uint32_t aic79xx_no_reset;
2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Certain PCI motherboards will scan PCI devices from highest to lowest,
2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * others scan from lowest to highest, and they tend to do all kinds of
2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * strange things when they come into contact with PCI bridge chips.  The
2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * net result of all this is that the PCI card that is actually used to boot
2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the machine is very hard to detect.  Most motherboards go from lowest
2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PCI slot number to highest, and the first SCSI controller found is the
2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * one you boot from.  The only exceptions to this are when a controller
2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * has its BIOS disabled.  So, we by default sort all of our SCSI controllers
2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from lowest PCI slot number to highest PCI slot number.  We also force
2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * all controllers with their BIOS disabled to the end of the list.  This
2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * works on *almost* all computers.  Where it doesn't work, we have this
2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * option.  Setting this option to non-0 will reverse the order of the sort
2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to highest first, then lowest, but will still leave cards with their BIOS
2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disabled at the very end.  That should fix everyone up unless there are
2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * really strange cirumstances.
2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic uint32_t aic79xx_reverse_scan;
2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Should we force EXTENDED translation on a controller.
2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *     0 == Use whatever is in the SEEPROM or default to off
2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *     1 == Use whatever is in the SEEPROM or default to on
2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic uint32_t aic79xx_extended;
2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PCI bus parity checking of the Adaptec controllers.  This is somewhat
2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dubious at best.  To my knowledge, this option has never actually
2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * solved a PCI parity problem, but on certain machines with broken PCI
2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * chipset configurations, it can generate tons of false error messages.
2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * It's included in the driver for completeness.
2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   0	   = Shut off PCI parity check
2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   non-0 = Enable PCI parity check
2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: you can't actually pass -1 on the lilo prompt.  So, to set this
2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * variable to -1 you would actually want to simply pass the variable
2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * name without a number.  That will invert the 0 which will result in
2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * -1.
2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic uint32_t aic79xx_pci_parity = ~0;
2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * There are lots of broken chipsets in the world.  Some of them will
2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * violate the PCI spec when we issue byte sized memory writes to our
3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * controller.  I/O mapped register access, if allowed by the given
3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * platform, will work in almost all cases.
3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsuint32_t aic79xx_allow_memio = ~0;
3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * aic79xx_detect() has been run, so register all device arrivals
3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * immediately with the system rather than deferring to the sorted
3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attachment performed by aic79xx_detect().
3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint aic79xx_detect_complete;
3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * So that we can set how long each device is given as a selection timeout.
3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The table of values goes like this:
3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   0 - 256ms
3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   1 - 128ms
3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   2 - 64ms
3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *   3 - 32ms
3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We default to 256ms because some older devices need a longer time
3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to respond to initial selection.
3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic uint32_t aic79xx_seltime;
3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Certain devices do not perform any aging on commands.  Should the
3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device be saturated by commands in one portion of the disk, it is
3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * possible for transactions on far away sectors to never be serviced.
3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * To handle these devices, we can periodically send an ordered tag to
3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * force all outstanding transactions to be serviced prior to a new
3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * transaction.
3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsuint32_t aic79xx_periodic_otag;
3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Module information and settable options.
3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *aic79xx = NULL;
3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("Dual BSD/GPL");
3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_VERSION(AIC79XX_DRIVER_VERSION);
34373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckemodule_param(aic79xx, charp, 0444);
3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(aic79xx,
3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"period delimited, options string.\n"
3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	verbose			Enable verbose/diagnostic logging\n"
3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	allow_memio		Allow device registers to be memory mapped\n"
3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	debug			Bitmask of debug values to enable\n"
3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	no_reset		Supress initial bus resets\n"
3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	extended		Enable extended geometry on all controllers\n"
3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	periodic_otag		Send an ordered tagged transaction\n"
3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"				periodically to prevent tag starvation.\n"
3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"				This may be required by some older disk\n"
3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"				or drives/RAID arrays.\n"
3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	reverse_scan		Sort PCI devices highest Bus/Slot to lowest\n"
3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	tag_info:<tag_str>	Set per-target tag depth\n"
3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	global_tag_depth:<int>	Global tag depth for all targets on all buses\n"
3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	precomp:<pcomp_list>	Set the signal precompensation (0-7).\n"
3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	amplitude:<int>		Set the signal amplitude (0-7).\n"
3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	seltime:<int>		Selection Timeout:\n"
3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"				(0/256ms,1/128ms,2/64ms,3/32ms)\n"
3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"\n"
3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	Sample /etc/modprobe.conf line:\n"
3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"		Enable verbose logging\n"
3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"		Set tag depth on Controller 2/Target 2 to 10 tags\n"
3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"		Shorten the selection timeout to 128ms\n"
3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"\n"
3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds"	options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
37073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke"\n");
3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ahd_linux_handle_scsi_status(struct ahd_softc *,
37373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					 struct scsi_device *,
3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 struct scb *);
3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
37673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					 struct scsi_cmnd *cmd);
3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ahd_linux_sem_timeout(u_long arg);
37873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int  ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				     struct ahd_devinfo *devinfo);
38273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_device_queue_depth(struct scsi_device *);
38360a13213840296b1e32d6781653a0eaa83d04382Hannes Reineckestatic int ahd_linux_run_command(struct ahd_softc*,
38473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 struct ahd_linux_device *,
38560a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke				 struct scsi_cmnd *);
3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ahd_linux_setup_tag_info_global(char *p);
3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic aic_option_callback_t ahd_linux_setup_tag_info;
3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic aic_option_callback_t ahd_linux_setup_iocell_info;
38973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int  aic79xx_setup(char *c);
39073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int  ahd_linux_next_unit(void);
3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/****************************** Inlines ***************************************/
3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic __inline void
3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
39873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_cmnd *cmd;
3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int direction;
4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	cmd = scb->io_ctx;
402be7db055dd7261522557046370f49160728e3847<hch@lst.de>	direction = cmd->sc_data_direction;
4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (cmd->use_sg != 0) {
4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		struct scatterlist *sg;
4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		sg = (struct scatterlist *)cmd->request_buffer;
4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else if (cmd->request_bufflen != 0) {
4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_unmap_single(ahd->dev_softc,
4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 scb->platform_data->buf_busaddr,
4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 cmd->request_bufflen, direction);
4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************** Macros **************************************/
4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BUILD_SCSIID(ahd, cmd)						\
4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Try to detect an Adaptec 79XX controller.
4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
42473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_detect(struct scsi_host_template *template)
4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct	ahd_softc *ahd;
4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int     found;
4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	error = 0;
4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * If we've been passed any parameters, process them now.
4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (aic79xx)
4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		aic79xx_setup(aic79xx);
4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	template->proc_name = "aic79xx";
4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Initialize our softc list lock prior to
4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * probing for any adapters.
4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd_list_lockinit();
4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PCI
4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	error = ahd_linux_pci_init();
4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (error)
4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return error;
4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Register with the SCSI layer all
4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * controllers we've found.
4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	found = 0;
4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	TAILQ_FOREACH(ahd, &ahd_tailq, links) {
4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (ahd_linux_register_host(ahd, template) == 0)
4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			found++;
4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	aic79xx_detect_complete++;
46173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return found;
4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return a string describing the driver.
4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char *
4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_linux_info(struct Scsi_Host *host)
4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	static char buffer[512];
4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	char	ahd_info[256];
4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	char   *bp;
4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct ahd_softc *ahd;
4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	bp = &buffer[0];
4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd = *(struct ahd_softc **)host->hostdata;
4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	memset(bp, 0, sizeof(buffer));
4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, AIC79XX_DRIVER_VERSION);
4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, "\n");
4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, "        <");
4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, ahd->description);
4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, ">\n");
4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, "        ");
4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd_controller_info(ahd, ahd_info);
4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, ahd_info);
4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	strcat(bp, "\n");
4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return (bp);
4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Queue an SCB to the controller.
4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
49673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct	 ahd_softc *ahd;
49973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	 ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Close the race of a command that was in the process of
5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * being queued to us just as our simq was frozen.  Let
5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * DV commands through so long as we are only frozen to
5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * perform DV.
5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
50973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data->qfrozen != 0) {
51060a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke		printf("%s: queue frozen\n", ahd_name(ahd));
5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
51260a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke		return SCSI_MLQUEUE_HOST_BUSY;
5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
51460a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke
51560a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke	/*
51660a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke	 * Save the callback on completion function.
51760a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke	 */
51860a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke	cmd->scsi_done = scsi_done;
51960a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke
5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	cmd->result = CAM_REQ_INPROG << 16;
52160a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke
52260a13213840296b1e32d6781653a0eaa83d04382Hannes Reinecke	return ahd_linux_run_command(ahd, dev, cmd);
5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
52573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic inline struct scsi_target **
52673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_target_in_softc(struct scsi_target *starget)
52773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
52873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd =
52973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		*((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
53073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int target_offset;
53173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
53273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	target_offset = starget->id;
53373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (starget->channel != 0)
53473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		target_offset += 8;
53573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
53673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return &ahd->platform_data->starget[target_offset];
53773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
53873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
54073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_target_alloc(struct scsi_target *starget)
5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
54273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd =
54373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		*((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
54473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
54573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
54673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_target *targ = scsi_transport_target_data(starget);
54773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
54873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo;
54973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
55073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	char channel = starget->channel + 'A';
5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
55273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
55373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
55473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	BUG_ON(*ahd_targp != NULL);
55573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
55673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	*ahd_targp = starget;
55773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	memset(targ, 0, sizeof(*targ));
55873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
55973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
56073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				    starget->id, &tstate);
56173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
56273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    CAM_LUN_WILDCARD, channel,
56373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    ROLE_INITIATOR);
56473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spi_min_period(starget) = AHD_SYNCRATE_MAX; /* We can do U320 */
56573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0)
56673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_max_offset(starget) = MAX_OFFSET_PACED_BUG;
56773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	else
56873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_max_offset(starget) = MAX_OFFSET_PACED;
56973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spi_max_width(starget) = ahd->features & AHD_WIDE;
57073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
57173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
57273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 AHD_TRANS_GOAL, /*paused*/FALSE);
57373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
57473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      AHD_TRANS_GOAL, /*paused*/FALSE);
57573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
57673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
57773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return 0;
57873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
57973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
58073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void
58173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_target_destroy(struct scsi_target *starget)
58273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
58373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
58473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
58573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	*ahd_targp = NULL;
5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
58973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_slave_alloc(struct scsi_device *sdev)
5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
59173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd =
59273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		*((struct ahd_softc **)sdev->host->hostdata);
59373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_target *starget = sdev->sdev_target;
59473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_target *targ = scsi_transport_target_data(starget);
59573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_device *dev;
5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (bootverbose)
59873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
59973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
60073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	BUG_ON(targ->sdev[sdev->lun] != NULL);
60173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
60273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev = scsi_transport_device_data(sdev);
60373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	memset(dev, 0, sizeof(*dev));
60473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
60573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
60673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * We start out life using untagged
60773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * transactions of which we allow one.
60873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
60973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->openings = 1;
61073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
61273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Set maxtags to 0.  This will be changed if we
61373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * later determine that we are dealing with
61473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * a tagged queuing capable device.
6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
61673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->maxtags = 0;
61773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
61873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	targ->sdev[sdev->lun] = sdev;
61973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return (0);
6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
62373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
62473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_slave_configure(struct scsi_device *sdev)
62573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
62673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd;
62773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
62873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd = *((struct ahd_softc **)sdev->host->hostdata);
62973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (bootverbose)
63073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s: Slave Configure %d\n", ahd_name(ahd), sdev->id);
63173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
63273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_linux_device_queue_depth(sdev);
63373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
63473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/* Initial Domain Validation */
63573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (!spi_initial_dv(sdev->sdev_target))
63673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_dv_device(sdev);
63773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
63873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return 0;
63973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
64073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
64273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_slave_destroy(struct scsi_device *sdev)
6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct	ahd_softc *ahd;
64573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_linux_device *dev = scsi_transport_device_data(sdev);
64673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct  ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target);
6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
64873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd = *((struct ahd_softc **)sdev->host->hostdata);
6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (bootverbose)
65073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id);
65173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
65273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	BUG_ON(dev->active);
65373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
65473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	targ->sdev[sdev->lun] = NULL;
6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(__i386__)
6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return the disk geometry for the given SCSI device.
6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    sector_t capacity, int geom[])
6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	uint8_t *bh;
6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	 heads;
6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	 sectors;
6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	 cylinders;
6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	 ret;
6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int	 extended;
6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct	 ahd_softc *ahd;
6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd = *((struct ahd_softc **)sdev->host->hostdata);
6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	bh = scsi_bios_ptable(bdev);
6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (bh) {
6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ret = scsi_partsize(bh, capacity,
6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    &geom[2], &geom[0], &geom[1]);
6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(bh);
6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (ret != -1)
6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return (ret);
6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	heads = 64;
6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sectors = 32;
6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	cylinders = aic_sector_div(capacity, heads, sectors);
6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (aic79xx_extended != 0)
6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		extended = 1;
6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (extended && cylinders >= 1024) {
6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		heads = 255;
6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		sectors = 63;
6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		cylinders = aic_sector_div(capacity, heads, sectors);
6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	geom[0] = heads;
6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	geom[1] = sectors;
6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	geom[2] = cylinders;
7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return (0);
7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Abort the current SCSI command(s).
7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
70873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_abort(struct scsi_cmnd *cmd)
70973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
71073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int error;
71173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
71273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	error = ahd_linux_queue_recovery_cmd(cmd, SCB_ABORT);
71373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (error != 0)
71473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("aic79xx_abort returns 0x%x\n", error);
71573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return error;
71673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
71773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
71873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
71973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Attempt to send a target reset message to the device that timed out.
72073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
72173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
72273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_dev_reset(struct scsi_cmnd *cmd)
72373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
72473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int error;
72573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
72673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	error = ahd_linux_queue_recovery_cmd(cmd, SCB_DEVICE_RESET);
72773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (error != 0)
72873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("aic79xx_dev_reset returns 0x%x\n", error);
72973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return error;
73073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
73173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
73273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
73373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Reset the SCSI bus.
73473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
73573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
73673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_bus_reset(struct scsi_cmnd *cmd)
7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct ahd_softc *ahd;
7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u_long s;
74073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    found;
7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
74373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#ifdef AHD_DEBUG
74473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
74573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s: Bus reset called for cmd %p\n",
74673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd);
74773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#endif
74873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &s);
74973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	found = ahd_reset_channel(ahd, cmd->device->channel + 'A',
75073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				  /*initiate reset*/TRUE);
75173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &s);
7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
75373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (bootverbose)
75473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s: SCSI bus reset delivered. "
75573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       "%d SCBs aborted.\n", ahd_name(ahd), found);
7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
75773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (SUCCESS);
75873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
76073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestruct scsi_host_template aic79xx_driver_template = {
76173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.module			= THIS_MODULE,
76273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.name			= "aic79xx",
76373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.proc_info		= ahd_linux_proc_info,
76473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.info			= ahd_linux_info,
76573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.queuecommand		= ahd_linux_queue,
76673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.eh_abort_handler	= ahd_linux_abort,
76773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.eh_device_reset_handler = ahd_linux_dev_reset,
76873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.eh_bus_reset_handler	= ahd_linux_bus_reset,
76973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#if defined(__i386__)
77073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.bios_param		= ahd_linux_biosparam,
77173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#endif
77273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.can_queue		= AHD_MAX_QUEUE,
77373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.this_id		= -1,
77473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.cmd_per_lun		= 2,
77573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.use_clustering		= ENABLE_CLUSTERING,
77673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.slave_alloc		= ahd_linux_slave_alloc,
77773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.slave_configure	= ahd_linux_slave_configure,
77873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.slave_destroy		= ahd_linux_slave_destroy,
77973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.target_alloc		= ahd_linux_target_alloc,
78073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.target_destroy		= ahd_linux_target_destroy,
78173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke};
7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
78373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/******************************** Bus DMA *************************************/
78473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
78573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
78673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		   bus_size_t alignment, bus_size_t boundary,
78773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		   dma_addr_t lowaddr, dma_addr_t highaddr,
78873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		   bus_dma_filter_t *filter, void *filterarg,
78973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		   bus_size_t maxsize, int nsegments,
79073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		   bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
79173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
79273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	bus_dma_tag_t dmat;
79373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
79473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
79573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dmat == NULL)
79673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (ENOMEM);
7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
79973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Linux is very simplistic about DMA memory.  For now don't
80073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * maintain all specification information.  Once Linux supplies
80173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * better facilities for doing these operations, or the
80273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * needs of this particular driver change, we might need to do
80373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * more here.
8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
80573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dmat->alignment = alignment;
80673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dmat->boundary = boundary;
80773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dmat->maxsize = maxsize;
80873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	*ret_tag = dmat;
80973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (0);
81073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
81273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
81373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
81473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
81573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	free(dmat, M_DEVBUF);
81673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
81873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
81973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
82073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 int flags, bus_dmamap_t *mapp)
82173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
82273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	*vaddr = pci_alloc_consistent(ahd->dev_softc,
82373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      dmat->maxsize, mapp);
82473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (*vaddr == NULL)
82573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (ENOMEM);
82673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return(0);
82773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
82973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
83073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
83173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		void* vaddr, bus_dmamap_t map)
83273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
83373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	pci_free_consistent(ahd->dev_softc, dmat->maxsize,
83473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    vaddr, map);
83573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
83673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
83773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
83873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
83973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
84073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		void *cb_arg, int flags)
84173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
84373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Assume for now that this will only be used during
84473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * initialization and not for per-transaction buffer mapping.
8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
84673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	bus_dma_segment_t stack_sg;
8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
84873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	stack_sg.ds_addr = map;
84973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	stack_sg.ds_len = dmat->maxsize;
85073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
85173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (0);
85273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
85473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
85573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
85673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
85773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
85973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
86073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
86173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
86273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/* Nothing to do */
86373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (0);
86473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
86673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/********************* Platform Dependent Functions ***************************/
86773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
86873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Compare "left hand" softc with "right hand" softc, returning:
86973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * < 0 - lahd has a lower priority than rahd
87073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke *   0 - Softcs are equal
87173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * > 0 - lahd has a higher priority than rahd
87273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
87373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
87473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
87573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
87673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int	value;
8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
87973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Under Linux, cards are ordered as follows:
88073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 *	1) PCI devices that are marked as the boot controller.
88173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 *	2) PCI devices with BIOS enabled sorted by bus/slot/func.
88273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 *	3) All remaining PCI devices sorted by bus/slot/func.
8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
88473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#if 0
88573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	value = (lahd->flags & AHD_BOOT_CHANNEL)
88673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	      - (rahd->flags & AHD_BOOT_CHANNEL);
88773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (value != 0)
88873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/* Controllers set for boot have a *higher* priority */
88973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (value);
89073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#endif
8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
89273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	value = (lahd->flags & AHD_BIOS_ENABLED)
89373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	      - (rahd->flags & AHD_BIOS_ENABLED);
89473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (value != 0)
89573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/* Controllers with BIOS enabled have a *higher* priority */
89673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (value);
8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
89873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/* Still equal.  Sort by bus/slot/func. */
89973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (aic79xx_reverse_scan != 0)
90073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		value = ahd_get_pci_bus(lahd->dev_softc)
90173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      - ahd_get_pci_bus(rahd->dev_softc);
90273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	else
90373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		value = ahd_get_pci_bus(rahd->dev_softc)
90473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      - ahd_get_pci_bus(lahd->dev_softc);
90573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (value != 0)
90673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (value);
90773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (aic79xx_reverse_scan != 0)
90873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		value = ahd_get_pci_slot(lahd->dev_softc)
90973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      - ahd_get_pci_slot(rahd->dev_softc);
91073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	else
91173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		value = ahd_get_pci_slot(rahd->dev_softc)
91273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      - ahd_get_pci_slot(lahd->dev_softc);
91373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (value != 0)
91473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (value);
9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
91673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	value = rahd->channel - lahd->channel;
91773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (value);
91873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
92073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void
92173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
92273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
92473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((instance >= 0)
92573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) {
92673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		uint8_t *iocell_info;
92773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
92873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
92973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		iocell_info[index] = value & 0xFFFF;
93073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (bootverbose)
93173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("iocell[%d:%ld] = %d\n", instance, index, value);
9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
93373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
93573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void
93673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_setup_tag_info_global(char *p)
93773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
93873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int tags, i, j;
9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
94073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
94173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	printf("Setting Global Tags= %d\n", tags);
94273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
94373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) {
94473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		for (j = 0; j < AHD_NUM_TARGETS; j++) {
94573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			aic79xx_tag_info[i].tag_commands[j] = tags;
9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
95173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
95473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((instance >= 0) && (targ >= 0)
95573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (instance < NUM_ELEMENTS(aic79xx_tag_info))
95673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (targ < AHD_NUM_TARGETS)) {
95773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
95873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (bootverbose)
95973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("tag_info[%d:%d] = %d\n", instance, targ, value);
9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
96473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Handle Linux boot parameters. This routine allows for assigning a value
96573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * to a parameter with a ':' between the parameter and the value.
96673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * ie. aic79xx=stpwlev:1,extended
9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
96973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeaic79xx_setup(char *s)
9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
97173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int	i, n;
97273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	char   *p;
97373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	char   *end;
9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
97573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	static struct {
97673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		const char *name;
97773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		uint32_t *flag;
97873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} options[] = {
97973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "extended", &aic79xx_extended },
98073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "no_reset", &aic79xx_no_reset },
98173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "verbose", &aic79xx_verbose },
98273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "allow_memio", &aic79xx_allow_memio},
9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef AHD_DEBUG
98473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "debug", &ahd_debug },
9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
98673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "reverse_scan", &aic79xx_reverse_scan },
98773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "periodic_otag", &aic79xx_periodic_otag },
98873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "pci_parity", &aic79xx_pci_parity },
98973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "seltime", &aic79xx_seltime },
99073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "tag_info", NULL },
99173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "global_tag_depth", NULL},
99273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "slewrate", NULL },
99373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "precomp", NULL },
99473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		{ "amplitude", NULL },
99573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	};
9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
99773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	end = strchr(s, '\0');
9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
99973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
100073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
100173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * will never be 0 in this case.
100273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
100373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	n = 0;
100473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
100573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	while ((p = strsep(&s, ",.")) != NULL) {
100673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (*p == '\0')
100773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			continue;
100873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		for (i = 0; i < NUM_ELEMENTS(options); i++) {
100973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
101073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			n = strlen(options[i].name);
101173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (strncmp(options[i].name, p, n) == 0)
101273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				break;
101373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
101473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (i == NUM_ELEMENTS(options))
101573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			continue;
101673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
101773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (strncmp(p, "global_tag_depth", n) == 0) {
101873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_linux_setup_tag_info_global(p + n);
101973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (strncmp(p, "tag_info", n) == 0) {
102073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			s = aic_parse_brace_option("tag_info", p + n, end,
102173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    2, ahd_linux_setup_tag_info, 0);
102273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (strncmp(p, "slewrate", n) == 0) {
102373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			s = aic_parse_brace_option("slewrate",
102473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    p + n, end, 1, ahd_linux_setup_iocell_info,
102573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    AIC79XX_SLEWRATE_INDEX);
102673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (strncmp(p, "precomp", n) == 0) {
102773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			s = aic_parse_brace_option("precomp",
102873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    p + n, end, 1, ahd_linux_setup_iocell_info,
102973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    AIC79XX_PRECOMP_INDEX);
103073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (strncmp(p, "amplitude", n) == 0) {
103173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			s = aic_parse_brace_option("amplitude",
103273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    p + n, end, 1, ahd_linux_setup_iocell_info,
103373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    AIC79XX_AMPLITUDE_INDEX);
103473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (p[n] == ':') {
103573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			*(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
103673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (!strncmp(p, "verbose", n)) {
103773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			*(options[i].flag) = 1;
103873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else {
103973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			*(options[i].flag) ^= 0xFFFFFFFF;
104073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
104173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
104273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return 1;
10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
104573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke__setup("aic79xx=", aic79xx_setup);
104673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
104773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeuint32_t aic79xx_verbose;
10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint
105073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
105273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	char	buf[80];
105373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	Scsi_Host *host;
105473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	char	*new_name;
105573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_long	s;
10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
105773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	template->name = ahd->description;
105873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
105973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (host == NULL)
10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return (ENOMEM);
10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
106273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	*((struct ahd_softc **)host->hostdata) = ahd;
106373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &s);
106473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scsi_assign_lock(host, &ahd->platform_data->spin_lock);
106573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd->platform_data->host = host;
106673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->can_queue = AHD_MAX_QUEUE;
106773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->cmd_per_lun = 2;
106873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->sg_tablesize = AHD_NSEG;
106973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->this_id = ahd->our_id;
107073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->irq = ahd->platform_data->irq;
107173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
107273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->max_lun = AHD_NUM_LUNS;
107373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->max_channel = 0;
107473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->sg_tablesize = AHD_NSEG;
107573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_unit(ahd, ahd_linux_next_unit());
107673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	sprintf(buf, "scsi%d", host->host_no);
107773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
107873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (new_name != NULL) {
107973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		strcpy(new_name, buf);
108073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_name(ahd, new_name);
108173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
108273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->unique_id = ahd->unit;
108373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_linux_initialize_scsi_bus(ahd);
108473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_intr_enable(ahd, TRUE);
108573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &s);
108673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
108773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	host->transportt = ahd_linux_transport_template;
108873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
108973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scsi_add_host(host, &ahd->dev_softc->dev); /* XXX handle failure */
109073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scsi_scan_host(host);
10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return (0);
10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
109473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeuint64_t
109573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_get_memsize(void)
10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
109773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct sysinfo si;
109873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
109973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	si_meminfo(&si);
110073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return ((uint64_t)si.totalram << PAGE_SHIFT);
11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
110373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
110473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Find the smallest available unit number to use
110573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * for a new device.  We don't just use a static
110673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * count to handle the "repeated hot-(un)plug"
110773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * scenario.
110873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
110973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
111073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_next_unit(void)
11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
111273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd;
111373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int unit;
11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
111573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unit = 0;
111673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeretry:
111773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	TAILQ_FOREACH(ahd, &ahd_tailq, links) {
111873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->unit == unit) {
111973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			unit++;
112073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			goto retry;
11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
112273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
112373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (unit);
11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
112673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
112773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Place the SCSI bus into a known state by either resetting it,
112873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * or forcing transfer negotiations on the next command to any
112973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * target.
113073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
113173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void
113273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
113473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int target_id;
113573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int numtarg;
11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
113773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	target_id = 0;
113873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	numtarg = 0;
113973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
114073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (aic79xx_no_reset != 0)
114173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->flags &= ~AHD_RESET_BUS_A;
114273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
114373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->flags & AHD_RESET_BUS_A) != 0)
114473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
114573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	else
114673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
114973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Force negotiation to async for all targets that
115073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * will not see an initial bus reset.
11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
115273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	for (; target_id < numtarg; target_id++) {
115373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct ahd_devinfo devinfo;
115473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct ahd_initiator_tinfo *tinfo;
115573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct ahd_tmode_tstate *tstate;
115673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
115773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
115873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					    target_id, &tstate);
115973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
116073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				    CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
116173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_update_neg_request(ahd, &devinfo, tstate,
116273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       tinfo, AHD_NEG_ALWAYS);
116373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
116473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/* Give the bus some time to recover */
116573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
116673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_freeze_simq(ahd);
116773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		init_timer(&ahd->platform_data->reset_timer);
116873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->reset_timer.data = (u_long)ahd;
116973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->reset_timer.expires =
117073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		    jiffies + (AIC79XX_RESET_DELAY * HZ)/1000;
117173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->reset_timer.function =
117273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		    (ahd_linux_callback_t *)ahd_release_simq;
117373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		add_timer(&ahd->platform_data->reset_timer);
117473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint
117873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
118073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd->platform_data =
118173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	    malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
118273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data == NULL)
118373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return (ENOMEM);
118473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
118573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd->platform_data->irq = AHD_LINUX_NOIRQ;
118673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lockinit(ahd);
118773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	init_MUTEX_LOCKED(&ahd->platform_data->eh_sem);
118873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd->seltime = (aic79xx_seltime & 0x3) << 4;
11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return (0);
11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
119273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
119373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_free(struct ahd_softc *ahd)
11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
119573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_target *starget;
119673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int i, j;
11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
119873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data != NULL) {
119973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->platform_data->host != NULL) {
120073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			scsi_remove_host(ahd->platform_data->host);
120173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			scsi_host_put(ahd->platform_data->host);
120273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
120473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/* destroy all of the device and target objects */
120573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		for (i = 0; i < AHD_NUM_TARGETS; i++) {
120673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			starget = ahd->platform_data->starget[i];
120773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (starget != NULL) {
120873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				for (j = 0; j < AHD_NUM_LUNS; j++) {
120973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					struct ahd_linux_target *targ =
121073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke						scsi_transport_target_data(starget);
121173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					if (targ->sdev[j] == NULL)
121273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke						continue;
121373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					targ->sdev[j] = NULL;
121473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				}
121573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ahd->platform_data->starget[i] = NULL;
121673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			}
121773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
121973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
122073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			free_irq(ahd->platform_data->irq, ahd);
122173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->tags[0] == BUS_SPACE_PIO
122273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && ahd->bshs[0].ioport != 0)
122373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			release_region(ahd->bshs[0].ioport, 256);
122473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->tags[1] == BUS_SPACE_PIO
122573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && ahd->bshs[1].ioport != 0)
122673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			release_region(ahd->bshs[1].ioport, 256);
122773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->tags[0] == BUS_SPACE_MEMIO
122873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && ahd->bshs[0].maddr != NULL) {
122973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			iounmap(ahd->bshs[0].maddr);
123073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			release_mem_region(ahd->platform_data->mem_busaddr,
123173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					   0x1000);
123273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
123373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		free(ahd->platform_data, M_DEVBUF);
123473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
123773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
123873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_init(struct ahd_softc *ahd)
12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
124073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
124173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Lookup and commit any modified IO Cell options.
124273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
124373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) {
124473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct ahd_linux_iocell_opts *iocell_opts;
12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
124673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		iocell_opts = &aic79xx_iocell_info[ahd->unit];
124773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
124873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
124973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
125073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
125173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
125273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
125773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
125873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
126073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
126173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				SCB_GET_CHANNEL(ahd, scb),
126273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				SCB_GET_LUN(scb), SCB_LIST_NULL,
126373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ROLE_UNKNOWN, CAM_REQUEUE_REQ);
12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
126673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
126773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
126873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      ahd_queue_alg alg)
12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
127073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_target *starget;
127173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_target *targ;
127273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_device *dev;
127373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_device *sdev;
127473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int was_queuing;
127573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int now_queuing;
12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
127773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	starget = ahd->platform_data->starget[devinfo->target];
127873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	targ = scsi_transport_target_data(starget);
127973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	BUG_ON(targ == NULL);
128073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	sdev = targ->sdev[devinfo->lun];
128173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (sdev == NULL)
128273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return;
12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
128473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev = scsi_transport_device_data(sdev);
12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
128673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dev == NULL)
128773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return;
128873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
128973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	switch (alg) {
129073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	default:
129173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AHD_QUEUE_NONE:
129273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		now_queuing = 0;
129373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
129473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AHD_QUEUE_BASIC:
129573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		now_queuing = AHD_DEV_Q_BASIC;
129673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
129773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AHD_QUEUE_TAGGED:
129873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		now_queuing = AHD_DEV_Q_TAGGED;
129973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
130073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
130173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
130273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (was_queuing != now_queuing)
130373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (dev->active != 0)) {
130473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
130573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->qfrozen++;
13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
130873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
130973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (now_queuing) {
131073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		u_int usertags;
13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
131273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		usertags = ahd_linux_user_tagdepth(ahd, devinfo);
131373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (!was_queuing) {
131473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			/*
131573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * Start out agressively and allow our
131673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * dynamic queue depth algorithm to take
131773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * care of the rest.
131873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 */
131973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->maxtags = usertags;
132073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->openings = dev->maxtags - dev->active;
13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
132273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (dev->maxtags == 0) {
132373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			/*
132473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * Queueing is disabled by the user.
132573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 */
132673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->openings = 1;
132773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (alg == AHD_QUEUE_TAGGED) {
132873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->flags |= AHD_DEV_Q_TAGGED;
132973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (aic79xx_periodic_otag != 0)
133073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				dev->flags |= AHD_DEV_PERIODIC_OTAG;
133173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else
133273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->flags |= AHD_DEV_Q_BASIC;
133373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else {
133473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/* We can only have one opening. */
133573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->maxtags = 0;
133673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->openings =  1 - dev->active;
13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
133973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
134073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AHD_DEV_Q_BASIC:
134173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_adjust_queue_depth(sdev,
134273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					MSG_SIMPLE_TASK,
134373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					dev->openings + dev->active);
134473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
134573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AHD_DEV_Q_TAGGED:
134673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_adjust_queue_depth(sdev,
134773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					MSG_ORDERED_TASK,
134873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					dev->openings + dev->active);
134973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
135073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	default:
13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
135273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * We allow the OS to queue 2 untagged transactions to
135373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * us at any time even though we can only execute them
135473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * serially on the controller/device.  This should
135573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * remove some latency.
13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
135773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_adjust_queue_depth(sdev,
135873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					/*NON-TAGGED*/0,
135973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					/*queue depth*/2);
136073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
136473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeint
136573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
136673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			int lun, u_int tag, role_t role, uint32_t status)
13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
136873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return 0;
13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
137173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic u_int
137273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
137473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	static int warned_user;
137573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int tags;
13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
137773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	tags = 0;
137873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->user_discenable & devinfo->target_mask) != 0) {
137973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
138073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
138173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (warned_user == 0) {
138273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				printf(KERN_WARNING
138373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke"aic79xx: WARNING: Insufficient tag_info instances\n"
138473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke"aic79xx: for installed controllers.  Using defaults\n"
138573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke"aic79xx: Please update the aic79xx_tag_info array in\n"
138673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke"aic79xx: the aic79xx_osm.c source file.\n");
138773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				warned_user++;
138873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			}
138973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			tags = AHD_MAX_QUEUE;
139073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else {
139173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			adapter_tag_info_t *tag_info;
139273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
139373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			tag_info = &aic79xx_tag_info[ahd->unit];
139473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			tags = tag_info->tag_commands[devinfo->target_offset];
139573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (tags > AHD_MAX_QUEUE)
139673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				tags = AHD_MAX_QUEUE;
13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
139973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (tags);
14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
140373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Determines the queue depth for a given device.
14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
140673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_device_queue_depth(struct scsi_device *sdev)
14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
140873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_devinfo devinfo;
140973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int	tags;
141073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
141273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo,
141373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    ahd->our_id,
141473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    sdev->sdev_target->id, sdev->lun,
141573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    sdev->sdev_target->channel == 0 ? 'A' : 'B',
141673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    ROLE_INITIATOR);
141773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	tags = ahd_linux_user_tagdepth(ahd, &devinfo);
141873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (tags != 0 && sdev->tagged_supported != 0) {
14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
142073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
142173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_print_devinfo(ahd, &devinfo);
142273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("Tagged Queuing enabled.  Depth %d\n", tags);
142373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else {
142473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
142573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
142673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
142873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
142973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
143073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		      struct scsi_cmnd *cmd)
143173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
143273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	 scb *scb;
143373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	 hardware_scb *hscb;
143473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	 ahd_initiator_tinfo *tinfo;
143573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	 ahd_tmode_tstate *tstate;
143673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int	 col_idx;
143773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	uint16_t mask;
14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
144073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Get an scb to use.
14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
144273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
144373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				    cmd->device->id, &tstate);
144473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
144573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
144673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		col_idx = AHD_NEVER_COL_IDX;
144773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else {
144873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
144973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					    cmd->device->lun);
145073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
145173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
145273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->flags |= AHD_RESOURCE_SHORTAGE;
145373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return SCSI_MLQUEUE_HOST_BUSY;
14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
145673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->io_ctx = cmd;
145773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->platform_data->dev = dev;
145873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	hscb = scb->hscb;
145973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	cmd->host_scribble = (char *)scb;
14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
146173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
146273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Fill out basics of the HSCB.
146373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
146473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	hscb->control = 0;
146573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	hscb->scsiid = BUILD_SCSIID(ahd, cmd);
146673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	hscb->lun = cmd->device->lun;
146773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->hscb->task_management = 0;
146873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	mask = SCB_GET_TARGET_MASK(ahd, scb);
14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
147073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->user_discenable & mask) != 0)
147173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		hscb->control |= DISCENB;
14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
147373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
147473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->flags |= SCB_PACKETIZED;
14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
147673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((tstate->auto_negotiate & mask) != 0) {
147773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->flags |= SCB_AUTO_NEGOTIATE;
147873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->hscb->control |= MK_MESSAGE;
147973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
148073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
148173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
148273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		int	msg_bytes;
148373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		uint8_t tag_msgs[2];
148473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
148573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
148673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
148773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			hscb->control |= tag_msgs[0];
148873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (tag_msgs[0] == MSG_ORDERED_TASK)
148973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				dev->commands_since_idle_or_otag = 0;
149073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else
149173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
149273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
149373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			hscb->control |= MSG_ORDERED_TASK;
149473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->commands_since_idle_or_otag = 0;
149573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else {
149673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			hscb->control |= MSG_SIMPLE_TASK;
14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
149873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
150073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	hscb->cdb_len = cmd->cmd_len;
150173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
150273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
150373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->platform_data->xfer_len = 0;
150473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_residual(scb, 0);
150573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_sense_residual(scb, 0);
150673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->sg_count = 0;
150773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (cmd->use_sg != 0) {
150873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		void	*sg;
150973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct	 scatterlist *cur_seg;
151073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		u_int	 nseg;
151173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		int	 dir;
151273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
151373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		cur_seg = (struct scatterlist *)cmd->request_buffer;
151473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dir = cmd->sc_data_direction;
151573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		nseg = pci_map_sg(ahd->dev_softc, cur_seg,
151673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				  cmd->use_sg, dir);
151773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->platform_data->xfer_len = 0;
151873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
151973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dma_addr_t addr;
152073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			bus_size_t len;
152173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
152273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			addr = sg_dma_address(cur_seg);
152373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			len = sg_dma_len(cur_seg);
152473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			scb->platform_data->xfer_len += len;
152573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			sg = ahd_sg_setup(ahd, scb, sg, addr, len,
152673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					  /*last*/nseg == 1);
15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
152873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else if (cmd->request_bufflen != 0) {
152973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		void *sg;
153073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dma_addr_t addr;
153173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		int dir;
153273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
153373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		sg = scb->sg_list;
153473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dir = cmd->sc_data_direction;
153573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		addr = pci_map_single(ahd->dev_softc,
153673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      cmd->request_buffer,
153773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      cmd->request_bufflen, dir);
153873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->platform_data->xfer_len = cmd->request_bufflen;
153973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scb->platform_data->buf_busaddr = addr;
154073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		sg = ahd_sg_setup(ahd, scb, sg, addr,
154173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				  cmd->request_bufflen, /*last*/TRUE);
15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
154373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
154473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
154573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->openings--;
154673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->active++;
154773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->commands_issued++;
154873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
154973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
155073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->commands_since_idle_or_otag++;
155173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scb->flags |= SCB_ACTIVE;
155273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_queue_scb(ahd, scb);
155373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
155473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return 0;
15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
155773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
155873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * SCSI controller interrupt handler.
155973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
156073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeirqreturn_t
156173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
156373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd;
156473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_long	flags;
156573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int	ours;
15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
156773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd = (struct ahd_softc *) dev_id;
156873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
156973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ours = ahd_intr(ahd);
157073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
157173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return IRQ_RETVAL(ours);
15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid
157573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_platform_flushwork(struct ahd_softc *ahd)
15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
157773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid
158173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_send_async(struct ahd_softc *ahd, char channel,
158273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	       u_int target, u_int lun, ac_code code, void *arg)
15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
158473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	switch (code) {
158573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case AC_TRANSFER_NEG:
158673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	{
158773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		char	buf[80];
158873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct  scsi_target *starget;
158973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct	ahd_linux_target *targ;
159073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct	info_str info;
159173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct	ahd_initiator_tinfo *tinfo;
159273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct	ahd_tmode_tstate *tstate;
159373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		unsigned int target_ppr_options;
15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
159573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		BUG_ON(target == CAM_TARGET_WILDCARD);
159673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
159773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		info.buffer = buf;
159873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		info.length = sizeof(buf);
159973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		info.offset = 0;
160073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		info.pos = 0;
160173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
160273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					    target, &tstate);
160373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
160473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
160573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Don't bother reporting results while
160673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * negotiations are still pending.
160773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
160873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (tinfo->curr.period != tinfo->goal.period
160973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 || tinfo->curr.width != tinfo->goal.width
161073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 || tinfo->curr.offset != tinfo->goal.offset
161173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
161273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (bootverbose == 0)
161373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				break;
161473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
161573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
161673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Don't bother reporting results that
161773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * are identical to those last reported.
161873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
161973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		starget = ahd->platform_data->starget[target];
1620fc789a93994858b5e5a46afb96d0dcf6cc1b6f08James Bottomley		if (starget == NULL)
162173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
1622fc789a93994858b5e5a46afb96d0dcf6cc1b6f08James Bottomley		targ = scsi_transport_target_data(starget);
162373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
162473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		target_ppr_options =
162573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			(spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
162673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			+ (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
16273f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley			+ (spi_iu(starget) ?  MSG_EXT_PPR_IU_REQ : 0)
16283f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley			+ (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
16293f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley			+ (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
16303f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley			+ (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
163188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley			+ (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
163288ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley			+ (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
163373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
163473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (tinfo->curr.period == spi_period(starget)
163573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		    && tinfo->curr.width == spi_width(starget)
163673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		    && tinfo->curr.offset == spi_offset(starget)
163773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && tinfo->curr.ppr_options == target_ppr_options)
163873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (bootverbose == 0)
163973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				break;
164073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
164173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_period(starget) = tinfo->curr.period;
164273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_width(starget) = tinfo->curr.width;
164373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_offset(starget) = tinfo->curr.offset;
1644a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1645a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1646a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
16473f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley		spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
16483f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley		spi_pcomp_en(starget) =  tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
16493f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley		spi_rti(starget) =  tinfo->curr.ppr_options &  MSG_EXT_PPR_RTI ? 1 : 0;
16503f40d7d6eaadecd48f6d1c0c4a5ad414b992260eJames Bottomley		spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
165188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley		spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
165273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spi_display_xfer_agreement(starget);
16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
165473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
165573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke        case AC_SENT_BDR:
165673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	{
165773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		WARN_ON(lun != CAM_LUN_WILDCARD);
165873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_report_device_reset(ahd->platform_data->host,
165973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					 channel - 'A', target);
16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
166273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke        case AC_BUS_RESET:
166373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd->platform_data->host != NULL) {
166473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			scsi_report_bus_reset(ahd->platform_data->host,
166573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					      channel - 'A');
16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
166773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke                break;
166873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke        default:
166973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke                panic("ahd_send_async: Unexpected async event");
167073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke        }
16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
167373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke/*
167473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke * Calls the higher level scsi done function and frees the scb.
167573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke */
167673a25462100772b72a5d62fd66dff01b53018618Hannes Reineckevoid
167773a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_done(struct ahd_softc *ahd, struct scb *scb)
16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
167973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scsi_cmnd *cmd;
168073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	  ahd_linux_device *dev;
16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
168273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((scb->flags & SCB_ACTIVE) == 0) {
168373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
168473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_dump_card_state(ahd);
168573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		panic("Stopping for safety");
16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
168773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	LIST_REMOVE(scb, pending_links);
168873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	cmd = scb->io_ctx;
168973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev = scb->platform_data->dev;
169073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->active--;
169173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev->openings++;
169273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
169373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		cmd->result &= ~(CAM_DEV_QFRZN << 16);
169473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->qfrozen--;
169573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
169673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_linux_unmap_scb(ahd, scb);
16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
169973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Guard against stale sense data.
170073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * The Linux mid-layer assumes that sense
170173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * was retrieved anytime the first byte of
170273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * the sense buffer looks "sane".
17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
170473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	cmd->sense_buffer[0] = 0;
170573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
170673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		uint32_t amount_xferred;
17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
170873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		amount_xferred =
170973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		    ahd_get_transfer_length(scb) - ahd_get_residual(scb);
171073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef AHD_DEBUG
171273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if ((ahd_debug & AHD_SHOW_MISC) != 0) {
171373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ahd_print_path(ahd, scb);
171473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				printf("Set CAM_UNCOR_PARITY\n");
171573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			}
17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
171773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
171873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#ifdef AHD_REPORT_UNDERFLOWS
17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
172073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * This code is disabled by default as some
172173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * clients of the SCSI system do not properly
172273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * initialize the underflow parameter.  This
172373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * results in spurious termination of commands
172473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * that complete as expected (e.g. underflow is
172573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * allowed as command can return variable amounts
172673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * of data.
17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
172873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else if (amount_xferred < scb->io_ctx->underflow) {
172973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			u_int i;
17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
173173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_print_path(ahd, scb);
173273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("CDB:");
173373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			for (i = 0; i < scb->io_ctx->cmd_len; i++)
173473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				printf(" 0x%x", scb->io_ctx->cmnd[i]);
173573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("\n");
173673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_print_path(ahd, scb);
173773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("Saw underflow (%ld of %ld bytes). "
173873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			       "Treated as error\n",
173973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ahd_get_residual(scb),
174073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ahd_get_transfer_length(scb));
174173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
174273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke#endif
174373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else {
174473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_transaction_status(scb, CAM_REQ_CMP);
17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
174673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
174773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
174873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
175073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dev->openings == 1
175173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
175273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
175373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->tag_success_count++;
175473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
175573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Some devices deal with temporary internal resource
175673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * shortages by returning queue full.  When the queue
175773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * full occurrs, we throttle back.  Slowly try to get
175873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * back to our previous queue depth.
175973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
176073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((dev->openings + dev->active) < dev->maxtags
176173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
176273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->tag_success_count = 0;
176373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->openings++;
176473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
176673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dev->active == 0)
176773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->commands_since_idle_or_otag = 0;
17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
176973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
177073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("Recovery SCB completes\n");
177173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
177273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
177373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
177473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if ((ahd->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) {
177573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd->platform_data->flags &= ~AHD_SCB_UP_EH_SEM;
177673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			up(&ahd->platform_data->eh_sem);
177773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
177973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
178073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_free_scb(ahd, scb);
178173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_linux_queue_cmd_complete(ahd, cmd);
17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
178573a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_handle_scsi_status(struct ahd_softc *ahd,
178673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			     struct scsi_device *sdev, struct scb *scb)
17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
178873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_devinfo devinfo;
178973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
179173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo,
179273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    ahd->our_id,
179373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    sdev->sdev_target->id, sdev->lun,
179473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    sdev->sdev_target->channel == 0 ? 'A' : 'B',
179573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    ROLE_INITIATOR);
179673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
179773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
179873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * We don't currently trust the mid-layer to
179973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * properly deal with queue full or busy.  So,
180073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * when one occurs, we tell the mid-layer to
180173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * unconditionally requeue the command to us
180273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * so that we can retry it ourselves.  We also
180373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * implement our own throttling mechanism so
180473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * we don't clobber the device with too many
180573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * commands.
180673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
180773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	switch (ahd_get_scsi_status(scb)) {
180873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	default:
180973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		break;
181073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case SCSI_STATUS_CHECK_COND:
181173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case SCSI_STATUS_CMD_TERMINATED:
181273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	{
181373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct scsi_cmnd *cmd;
18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
181673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Copy sense information to the OS's cmd
181773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * structure if it is available.
18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
181973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		cmd = scb->io_ctx;
182073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
182173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			struct scsi_status_iu_header *siu;
182273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			u_int sense_size;
182373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			u_int sense_offset;
18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
182573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (scb->flags & SCB_SENSE) {
182673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				sense_size = MIN(sizeof(struct scsi_sense_data)
182773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					       - ahd_get_sense_residual(scb),
182873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke						 sizeof(cmd->sense_buffer));
182973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				sense_offset = 0;
183073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			} else {
183173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				/*
183273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * Copy only the sense data into the provided
183373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * buffer.
183473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 */
183573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				siu = (struct scsi_status_iu_header *)
183673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				    scb->sense_data;
183773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				sense_size = MIN(scsi_4btoul(siu->sense_length),
183873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke						sizeof(cmd->sense_buffer));
183973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				sense_offset = SIU_SENSE_OFFSET(siu);
184073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			}
18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
184273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
184373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			memcpy(cmd->sense_buffer,
184473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			       ahd_get_sense_buf(ahd, scb)
184573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			       + sense_offset, sense_size);
184673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			cmd->result |= (DRIVER_SENSE << 24);
18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef AHD_DEBUG
184973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (ahd_debug & AHD_SHOW_SENSE) {
185073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				int i;
18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
185273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				printf("Copied %d bytes of sense data at %d:",
185373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       sense_size, sense_offset);
185473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				for (i = 0; i < sense_size; i++) {
18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					if ((i & 0xF) == 0)
185673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke						printf("\n");
185773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					printf("0x%x ", cmd->sense_buffer[i]);
18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				}
18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				printf("\n");
18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
186473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
186573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	case SCSI_STATUS_QUEUE_FULL:
186673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
186773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * By the time the core driver has returned this
186873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * command, all other commands that were queued
186973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * to us but not the device have been returned.
187073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * This ensures that dev->active is equal to
187173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * the number of commands actually queued to
187273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * the device.
187373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
187473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->tag_success_count = 0;
187573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (dev->active != 0) {
18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
187773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * Drop our opening count to the number
187873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * of commands currently outstanding.
18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
188073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			dev->openings = 0;
18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef AHD_DEBUG
188273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
188373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				ahd_print_path(ahd, scb);
188473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				printf("Dropping tag count to %d\n",
188573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       dev->active);
18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
188873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			if (dev->active == dev->tags_on_last_queuefull) {
18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
189073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				dev->last_queuefull_same_count++;
18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
189273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * If we repeatedly see a queue full
189373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * at the same queue depth, this
189473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * device has a fixed number of tag
189573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * slots.  Lock in this tag depth
189673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * so we stop seeing queue fulls from
189773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 * this device.
18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
189973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				if (dev->last_queuefull_same_count
190073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 == AHD_LOCK_TAGS_COUNT) {
190173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					dev->maxtags = dev->active;
190273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					ahd_print_path(ahd, scb);
190373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					printf("Locking max tag count at %d\n",
190473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					       dev->active);
19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				}
190673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			} else {
190773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				dev->tags_on_last_queuefull = dev->active;
190873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				dev->last_queuefull_same_count = 0;
19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
191073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
191173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_set_scsi_status(scb, SCSI_STATUS_OK);
191273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_platform_set_tags(ahd, &devinfo,
191373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				     (dev->flags & AHD_DEV_Q_BASIC)
191473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				   ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
191873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Drop down to a single opening, and treat this
191973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * as if the target returned BUSY SCSI status.
19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
192173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		dev->openings = 1;
192273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_platform_set_tags(ahd, &devinfo,
192373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			     (dev->flags & AHD_DEV_Q_BASIC)
192473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			   ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
192573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
192673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
192973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void
193073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
193373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Map CAM error codes into Linux Error codes.  We
193473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * avoid the conversion so that the DV code has the
193573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * full error information available when making
193673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * state change decisions.
19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
193873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	{
193973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		uint32_t status;
194073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		u_int new_status;
19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
194273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		status = ahd_cmd_get_transaction_status(cmd);
194373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		switch (status) {
194473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_INPROG:
194573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_CMP:
194673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_SCSI_STATUS_ERROR:
194773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_OK;
194873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
194973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_ABORTED:
195073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_ABORT;
195173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
195273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_BUSY:
195373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_BUS_BUSY;
195473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
195573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_INVALID:
195673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_PATH_INVALID:
195773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_BAD_TARGET;
195873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
195973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_SEL_TIMEOUT:
196073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_NO_CONNECT;
196173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
196273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_SCSI_BUS_RESET:
196373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_BDR_SENT:
196473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_RESET;
196573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
196673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_UNCOR_PARITY:
196773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_PARITY;
196873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
196973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_CMD_TIMEOUT:
197073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_TIME_OUT;
197173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
197273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_UA_ABORT:
197373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_CMP_ERR:
197473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_AUTOSENSE_FAIL:
197573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_NO_HBA:
197673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_DATA_RUN_ERR:
197773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_UNEXP_BUSFREE:
197873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_SEQUENCE_FAIL:
197973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_CCB_LEN_ERR:
198073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_PROVIDE_FAIL:
198173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_TERMIO:
198273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_UNREC_HBA_ERROR:
198373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQ_TOO_BIG:
198473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_ERROR;
198573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
198673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		case CAM_REQUEUE_REQ:
198773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_REQUEUE;
198873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
198973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		default:
199073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			/* We should never get here */
199173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			new_status = DID_ERROR;
199273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
199373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
199473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
199573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_cmd_set_transaction_status(cmd, new_status);
199673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
199773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
199873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	cmd->scsi_done(cmd);
19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
200273a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_sem_timeout(u_long arg)
20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
200473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct	ahd_softc *ahd;
200573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_long	s;
20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
200773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd = (struct ahd_softc *)arg;
200873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
200973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &s);
201073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((ahd->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) {
201173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->flags &= ~AHD_SCB_UP_EH_SEM;
201273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		up(&ahd->platform_data->eh_sem);
201373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
201473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &s);
20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid
201873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_freeze_simq(struct ahd_softc *ahd)
20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
202073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd->platform_data->qfrozen++;
202173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data->qfrozen == 1) {
202273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_block_requests(ahd->platform_data->host);
202373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_platform_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS,
202473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					CAM_LUN_WILDCARD, SCB_LIST_NULL,
202573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					ROLE_INITIATOR, CAM_REQUEUE_REQ);
20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid
203073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_release_simq(struct ahd_softc *ahd)
20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
203273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_long s;
203373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    unblock_reqs;
20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
203573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unblock_reqs = 0;
203673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &s);
203773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data->qfrozen > 0)
203873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->qfrozen--;
203973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd->platform_data->qfrozen == 0) {
204073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		unblock_reqs = 1;
20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
204273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &s);
20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
204473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * There is still a race here.  The mid-layer
204573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * should keep its own freeze count and use
204673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * a bottom half handler to run the queues
204773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * so we can unblock with our own lock held.
20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
204973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (unblock_reqs)
205073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		scsi_unblock_requests(ahd->platform_data->host);
205173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
205373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic int
205473a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
205573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
205673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd;
205773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_linux_device *dev;
205873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct scb *pending_scb;
205973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int  saved_scbptr;
206073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int  active_scbptr;
206173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int  last_phase;
206273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int  saved_scsiid;
206373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	u_int  cdb_byte;
206473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    retval;
206573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    was_paused;
206673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    paused;
206773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    wait;
206873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	int    disconnected;
206973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_mode_state saved_modes;
207073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
207173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	pending_scb = NULL;
207273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	paused = FALSE;
207373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	wait = FALSE;
207473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
207573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
207673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	printf("%s:%d:%d:%d: Attempting to queue a%s message:",
207773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	       ahd_name(ahd), cmd->device->channel,
207873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	       cmd->device->id, cmd->device->lun,
207973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	       flag == SCB_ABORT ? "n ABORT" : " TARGET RESET");
208073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
208173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	printf("CDB:");
208273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
208373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf(" 0x%x", cmd->cmnd[cdb_byte]);
208473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	printf("\n");
208573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
208673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spin_lock_irq(&ahd->platform_data->spin_lock);
20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
208973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * First determine if we currently own this command.
209073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Start by searching the device queue.  If not found
209173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * there, check the pending_scb list.  If not found
209273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * at all, and the system wanted us to just abort the
209373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * command, return success.
20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
209573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	dev = scsi_transport_device_data(cmd->device);
209673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
209773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dev == NULL) {
209873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
209973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * No target device for this command exists,
210073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * so we must not still own the command.
210173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
210273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s:%d:%d:%d: Is not an active device\n",
210373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd->device->channel, cmd->device->id,
210473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       cmd->device->lun);
210573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		retval = SUCCESS;
210673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		goto no_cmd;
210773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
211073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * See if we can find a matching cmd in the pending list.
21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
211273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
211373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (pending_scb->io_ctx == cmd)
211473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			break;
21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
211773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (pending_scb == NULL && flag == SCB_DEVICE_RESET) {
21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
211973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/* Any SCB for this device will do for a target reset */
212073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
212173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		  	if (ahd_match_scb(ahd, pending_scb, cmd->device->id,
212273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					  cmd->device->channel + 'A',
212373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					  CAM_LUN_WILDCARD,
212473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke					  SCB_LIST_NULL, ROLE_INITIATOR) == 0)
212573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				break;
21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
212973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (pending_scb == NULL) {
213073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s:%d:%d:%d: Command not found\n",
213173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd->device->channel, cmd->device->id,
213273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       cmd->device->lun);
213373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		goto no_cmd;
21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
213673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
213773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
213873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * We can't queue two recovery actions using the same SCB
213973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
214073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		retval = FAILED;
214173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		goto  done;
214273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
214573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Ensure that the card doesn't do anything
214673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * behind our back.  Also make sure that we
214773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * didn't "just" miss an interrupt that would
214873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * affect this cmd.
21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
215073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	was_paused = ahd_is_paused(ahd);
215173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_pause_and_flushwork(ahd);
215273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	paused = TRUE;
21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
215473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if ((pending_scb->flags & SCB_ACTIVE) == 0) {
215573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s:%d:%d:%d: Command already completed\n",
215673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd->device->channel, cmd->device->id,
215773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       cmd->device->lun);
215873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		goto no_cmd;
215973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
216173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	printf("%s: At time of recovery, card was %spaused\n",
216273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	       ahd_name(ahd), was_paused ? "" : "not ");
216373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_dump_card_state(ahd);
21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
216573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	disconnected = TRUE;
216673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (flag == SCB_ABORT) {
216773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ahd_search_qinfifo(ahd, cmd->device->id,
216873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       cmd->device->channel + 'A',
216973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       cmd->device->lun,
217073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       pending_scb->hscb->tag,
217173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       ROLE_INITIATOR, CAM_REQ_ABORTED,
217273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				       SEARCH_COMPLETE) > 0) {
217373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
217473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			       ahd_name(ahd), cmd->device->channel,
217573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			       cmd->device->id, cmd->device->lun);
217673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			retval = SUCCESS;
217773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			goto done;
217873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		}
217973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else if (ahd_search_qinfifo(ahd, cmd->device->id,
218073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      cmd->device->channel + 'A',
218173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      cmd->device->lun, pending_scb->hscb->tag,
218273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      ROLE_INITIATOR, /*status*/0,
218373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      SEARCH_COUNT) > 0) {
218473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		disconnected = FALSE;
218573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	}
21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
218773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	saved_modes = ahd_save_modes(ahd);
218873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
218973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	last_phase = ahd_inb(ahd, LASTPHASE);
219073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	saved_scbptr = ahd_get_scbptr(ahd);
219173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	active_scbptr = saved_scbptr;
219273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
219373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct scb *bus_scb;
21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
219573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		bus_scb = ahd_lookup_scb(ahd, active_scbptr);
219673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (bus_scb == pending_scb)
219773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			disconnected = FALSE;
219873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		else if (flag != SCB_ABORT
219973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 && ahd_inb(ahd, SAVED_SCSIID) == pending_scb->hscb->scsiid
220073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 && ahd_inb(ahd, SAVED_LUN) == SCB_GET_LUN(pending_scb))
220173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			disconnected = FALSE;
22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
220373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
220473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/*
220573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * At this point, pending_scb is the scb associated with the
220673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * passed in command.  That command is currently active on the
220773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * bus or is in the disconnected state.
220873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 */
220973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
221073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (last_phase != P_BUSFREE
221173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 && (SCB_GET_TAG(pending_scb) == active_scbptr
221273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	     || (flag == SCB_DEVICE_RESET
221373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 && SCSIID_TARGET(ahd, saved_scsiid) == cmd->device->id))) {
221473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
22151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
221673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * We're active on the bus, so assert ATN
221773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * and hope that the target responds.
22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
221973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb = ahd_lookup_scb(ahd, active_scbptr);
222073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb->flags |= SCB_RECOVERY_SCB|flag;
222173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_outb(ahd, MSG_OUT, HOST_MSG);
222273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
222373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s:%d:%d:%d: Device is active, asserting ATN\n",
222473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd->device->channel,
222573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       cmd->device->id, cmd->device->lun);
222673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		wait = TRUE;
222773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else if (disconnected) {
222873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
222973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		/*
223073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Actually re-queue this SCB in an attempt
223173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * to select the device before it reconnects.
223273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 */
223373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
223473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
223573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb->hscb->cdb_len = 0;
223673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb->hscb->task_attribute = 0;
223773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
223873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
223973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
224173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * Mark the SCB has having an outstanding
224273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * task management function.  Should the command
224373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * complete normally before the task management
224473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * function can be sent, the host will be notified
224573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * to abort our requeued SCB.
22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
224773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_outb(ahd, SCB_TASK_MANAGEMENT,
224873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 pending_scb->hscb->task_management);
224973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		} else {
225073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			/*
225173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * If non-packetized, set the MK_MESSAGE control
225273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * bit indicating that we desire to send a message.
225373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * We also set the disconnected flag since there is
225473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * no guarantee that our SCB control byte matches
225573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * the version on the card.  We don't want the
225673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * sequencer to abort the command thinking an
225773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * unsolicited reselection occurred.
225873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 */
225973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
226073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
226173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			/*
226273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * The sequencer will never re-reference the
226373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * in-core SCB.  To make sure we are notified
226473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * during reslection, set the MK_MESSAGE flag in
226573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 * the card's copy of the SCB.
226673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 */
226773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ahd_outb(ahd, SCB_CONTROL,
226873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
227073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
227273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * Clear out any entries in the QINFIFO first
227373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * so we are the next SCB for this target
227473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		 * to run.
22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
227673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_search_qinfifo(ahd, cmd->device->id,
227773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				   cmd->device->channel + 'A', cmd->device->lun,
227873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				   SCB_LIST_NULL, ROLE_INITIATOR,
227973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				   CAM_REQUEUE_REQ, SEARCH_COMPLETE);
228073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_qinfifo_requeue_tail(ahd, pending_scb);
228173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_set_scbptr(ahd, saved_scbptr);
228273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_print_path(ahd, pending_scb);
228373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("Device is disconnected, re-queuing SCB\n");
228473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		wait = TRUE;
228573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	} else {
228673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("%s:%d:%d:%d: Unable to deliver message\n",
228773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       ahd_name(ahd), cmd->device->channel,
228873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		       cmd->device->id, cmd->device->lun);
228973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		retval = FAILED;
229073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		goto done;
22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
229373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckeno_cmd:
22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
229573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * Our assumption is that if we don't have the command, no
229673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * recovery action was required, so we return success.  Again,
229773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * the semantics of the mid-layer recovery engine are not
229873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	 * well defined, so this may change in time.
22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
230073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	retval = SUCCESS;
230173a25462100772b72a5d62fd66dff01b53018618Hannes Reineckedone:
230273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (paused)
230373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd_unpause(ahd);
230473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (wait) {
230573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		struct timer_list timer;
230673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		int ret;
23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
230873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ahd->platform_data->flags |= AHD_SCB_UP_EH_SEM;
230973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spin_unlock_irq(&ahd->platform_data->spin_lock);
231073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		init_timer(&timer);
231173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		timer.data = (u_long)ahd;
231273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		timer.expires = jiffies + (5 * HZ);
231373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		timer.function = ahd_linux_sem_timeout;
231473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		add_timer(&timer);
231573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("Recovery code sleeping\n");
231673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		down(&ahd->platform_data->eh_sem);
231773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		printf("Recovery code awake\n");
231873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke        	ret = del_timer_sync(&timer);
231973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (ret == 0) {
232073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			printf("Timer Expired\n");
232173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			retval = FAILED;
23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
232373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		spin_lock_irq(&ahd->platform_data->spin_lock);
23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
232573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spin_unlock_irq(&ahd->platform_data->spin_lock);
232673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return (retval);
23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
232973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_width(struct scsi_target *starget, int width)
23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
233173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
233273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
233373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
233473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
233673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
233773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
233873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
233973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
234073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
234173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
234273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
234373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_period(struct scsi_target *starget, int period)
234473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
234573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
234673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
234773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
234873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
234973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
235073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
235173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
235273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
235373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options;
2354a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt;
235573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
235673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long offset = tinfo->goal.offset;
23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2358a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2359a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2360a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: set period to %d\n", ahd_name(ahd), period);
2361a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
236273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (offset == 0)
236373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		offset = MAX_OFFSET;
23641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
236573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (period < 8)
236673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		period = 8;
236773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (period < 10) {
236873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ppr_options |= MSG_EXT_PPR_DT_REQ;
236973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (period == 8)
237073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ppr_options |= MSG_EXT_PPR_IU_REQ;
23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2373a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2374a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
237573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
237673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
237873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	/* all PPR requests apart from QAS require wide transfers */
237973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
238073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		if (spi_width(starget) == 0)
238173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			ppr_options &= MSG_EXT_PPR_QAS_REQ;
23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
238373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2384a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
2385a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2386a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
238773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
238873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, offset,
238973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
239073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
239373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_offset(struct scsi_target *starget, int offset)
23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
239573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
239673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
239773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
239873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
239973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
240073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
240173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
240273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
240373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = 0;
240473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int period = 0;
2405a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
240673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
240773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2408a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2409a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2410a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: set offset to %d\n", ahd_name(ahd), offset);
2411a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2412a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
241373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
241473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
241573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (offset != 0) {
241673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		period = tinfo->goal.period;
241773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ppr_options = tinfo->goal.ppr_options;
2418a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ahd_find_syncrate(ahd, &period, &ppr_options,
2419a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
2421a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
242273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
242373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
242473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 AHD_TRANS_GOAL, FALSE);
242573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
24261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
24271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
242873a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_dt(struct scsi_target *starget, int dt)
24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
243073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
243173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
243273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
243373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
243473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
243573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
243673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
243773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
243873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
243973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		& ~MSG_EXT_PPR_DT_REQ;
244073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int period = tinfo->goal.period;
244152b5cfb355b2b3274979d25490f190d478ab1fadHannes Reinecke	unsigned int width = tinfo->goal.width;
244273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
244373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2444a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2445a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2446a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s DT\n", ahd_name(ahd),
2447a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       dt ? "enabling" : "disabling");
2448a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
244973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (dt) {
245073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ppr_options |= MSG_EXT_PPR_DT_REQ;
245152b5cfb355b2b3274979d25490f190d478ab1fadHannes Reinecke		if (!width)
245252b5cfb355b2b3274979d25490f190d478ab1fadHannes Reinecke			ahd_linux_set_width(starget, 1);
2453a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	} else {
2454a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		if (period <= 9)
2455a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			period = 10; /* If resetting DT, period must be >= 25ns */
2456a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		/* IU is invalid without DT set */
2457a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2458a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	}
245973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
246073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
246173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
246273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2463a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
246473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
246573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
246673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
246773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
24681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
24691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
247073a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_qas(struct scsi_target *starget, int qas)
24711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
247273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
247373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
247473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
247573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
247673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
247773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
247873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
247973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
248073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
248173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		& ~MSG_EXT_PPR_QAS_REQ;
248273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int period = tinfo->goal.period;
2483a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt;
248473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
248573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2486a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2487a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2488a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s QAS\n", ahd_name(ahd),
2489a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       qas ? "enabling" : "disabling");
2490a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2491a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2492a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if (qas) {
2493a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options |= MSG_EXT_PPR_QAS_REQ;
2494a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	}
2495a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2496a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	dt = ppr_options & MSG_EXT_PPR_DT_REQ;
249773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
249873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
249973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
250073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
250173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2502a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
250373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
250473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
250573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
250673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
250973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_iu(struct scsi_target *starget, int iu)
25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
251173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
251273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
251373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
251473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
251573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
251673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
251773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
251873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
251973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
252073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		& ~MSG_EXT_PPR_IU_REQ;
252173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int period = tinfo->goal.period;
2522a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt;
252373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
252473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2525a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2526a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2527a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s IU\n", ahd_name(ahd),
2528a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       iu ? "enabling" : "disabling");
2529a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2530a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2531a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if (iu) {
253273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ppr_options |= MSG_EXT_PPR_IU_REQ;
2533a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2534a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	}
2535a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2536a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	dt = ppr_options & MSG_EXT_PPR_DT_REQ;
253773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
253873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
253973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
254073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
254173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2542a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
254373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
254473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
254573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
254673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
254773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke}
25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
254973a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
255073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke{
255173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
255273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
255373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_tmode_tstate *tstate;
255473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_initiator_tinfo *tinfo
255573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		= ahd_fetch_transinfo(ahd,
255673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      starget->channel + 'A',
255773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      shost->this_id, starget->id, &tstate);
255873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	struct ahd_devinfo devinfo;
255973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
256073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		& ~MSG_EXT_PPR_RD_STRM;
256173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int period = tinfo->goal.period;
256273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
256373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	unsigned long flags;
256473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
2565a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2566a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2567a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s Read Streaming\n", ahd_name(ahd),
2568a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       rdstrm  ? "enabling" : "disabling");
2569a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2570a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
257173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (rdstrm)
257273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		ppr_options |= MSG_EXT_PPR_RD_STRM;
257373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
257473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
257573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
257673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
257773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2578a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2579a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_lock(ahd, &flags);
2580a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2581a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
2582a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_unlock(ahd, &flags);
2583a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke}
2584a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2585a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reineckestatic void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2586a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke{
2587a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2588a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2589a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_tmode_tstate *tstate;
2590a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_initiator_tinfo *tinfo
2591a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		= ahd_fetch_transinfo(ahd,
2592a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      starget->channel + 'A',
2593a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      shost->this_id, starget->id, &tstate);
2594a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_devinfo devinfo;
2595a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
2596a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		& ~MSG_EXT_PPR_WR_FLOW;
2597a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int period = tinfo->goal.period;
2598a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2599a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned long flags;
2600a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2601a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2602a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2603a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s Write Flow Control\n", ahd_name(ahd),
2604a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       wrflow ? "enabling" : "disabling");
2605a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2606a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2607a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if (wrflow)
2608a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options |= MSG_EXT_PPR_WR_FLOW;
2609a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2610a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2611a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
2612a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
2613a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2614a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2615a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_lock(ahd, &flags);
2616a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2617a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
2618a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_unlock(ahd, &flags);
2619a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke}
2620a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2621a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reineckestatic void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2622a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke{
2623a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2624a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2625a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_tmode_tstate *tstate;
2626a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_initiator_tinfo *tinfo
2627a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		= ahd_fetch_transinfo(ahd,
2628a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      starget->channel + 'A',
2629a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      shost->this_id, starget->id, &tstate);
2630a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_devinfo devinfo;
2631a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
2632a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		& ~MSG_EXT_PPR_RTI;
2633a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int period = tinfo->goal.period;
2634a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2635a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned long flags;
2636a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2637a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd->features & AHD_RTI) == 0) {
2638a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2639a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		if ((ahd_debug & AHD_SHOW_DV) != 0)
2640a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			printf("%s: RTI not available\n", ahd_name(ahd));
2641a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2642a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		return;
2643a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	}
2644a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2645a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2646a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2647a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s RTI\n", ahd_name(ahd),
2648a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       rti ? "enabling" : "disabling");
2649a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2650a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2651a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if (rti)
2652a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options |= MSG_EXT_PPR_RTI;
2653a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2654a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2655a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
2656a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
2657a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2658a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2659a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_lock(ahd, &flags);
2660a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2661a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
2662a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_unlock(ahd, &flags);
2663a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke}
2664a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2665a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reineckestatic void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2666a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke{
2667a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2668a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2669a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_tmode_tstate *tstate;
2670a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_initiator_tinfo *tinfo
2671a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		= ahd_fetch_transinfo(ahd,
2672a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      starget->channel + 'A',
2673a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke				      shost->this_id, starget->id, &tstate);
2674a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	struct ahd_devinfo devinfo;
2675a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int ppr_options = tinfo->goal.ppr_options
2676a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		& ~MSG_EXT_PPR_PCOMP_EN;
2677a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int period = tinfo->goal.period;
2678a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2679a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	unsigned long flags;
2680a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2681a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#ifdef AHD_DEBUG
2682a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if ((ahd_debug & AHD_SHOW_DV) != 0)
2683a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		printf("%s: %s Precompensation\n", ahd_name(ahd),
2684a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		       pcomp ? "Enable" : "Disable");
2685a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke#endif
2686a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2687a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	if (pcomp)
2688a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke		ppr_options |= MSG_EXT_PPR_PCOMP_EN;
2689a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
2690a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2691a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			    starget->channel + 'A', ROLE_INITIATOR);
2692a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	ahd_find_syncrate(ahd, &period, &ppr_options,
2693a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2694a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke
269573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_lock(ahd, &flags);
269673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
269773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke			 ppr_options, AHD_TRANS_GOAL, FALSE);
269873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_unlock(ahd, &flags);
26991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
27001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
270188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomleystatic void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
270288ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley{
270388ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
270488ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
270588ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	struct ahd_tmode_tstate *tstate;
270688ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	struct ahd_initiator_tinfo *tinfo
270788ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley		= ahd_fetch_transinfo(ahd,
270888ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley				      starget->channel + 'A',
270988ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley				      shost->this_id, starget->id, &tstate);
271088ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	struct ahd_devinfo devinfo;
271188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	unsigned int ppr_options = tinfo->goal.ppr_options
271288ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley		& ~MSG_EXT_PPR_HOLD_MCS;
271388ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	unsigned int period = tinfo->goal.period;
271488ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
271588ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	unsigned long flags;
271688ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
271788ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	if (hold)
271888ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley		ppr_options |= MSG_EXT_PPR_HOLD_MCS;
271988ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
272088ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
272188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley			    starget->channel + 'A', ROLE_INITIATOR);
272288ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	ahd_find_syncrate(ahd, &period, &ppr_options,
272388ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley			  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
272488ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
272588ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	ahd_lock(ahd, &flags);
272688ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
272788ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley			 ppr_options, AHD_TRANS_GOAL, FALSE);
272888ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	ahd_unlock(ahd, &flags);
272988ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley}
273088ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
273188ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
273288ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley
273373a25462100772b72a5d62fd66dff01b53018618Hannes Reineckestatic struct spi_function_template ahd_linux_transport_functions = {
273473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_offset	= ahd_linux_set_offset,
273573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_offset	= 1,
273673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_period	= ahd_linux_set_period,
273773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_period	= 1,
273873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_width	= ahd_linux_set_width,
273973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_width	= 1,
274073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_dt		= ahd_linux_set_dt,
274173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_dt	= 1,
274273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_iu		= ahd_linux_set_iu,
274373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_iu	= 1,
274473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_qas	= ahd_linux_set_qas,
274573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_qas	= 1,
274673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.set_rd_strm	= ahd_linux_set_rd_strm,
274773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	.show_rd_strm	= 1,
2748a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.set_wr_flow	= ahd_linux_set_wr_flow,
2749a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.show_wr_flow	= 1,
2750a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.set_rti	= ahd_linux_set_rti,
2751a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.show_rti	= 1,
2752a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.set_pcomp_en	= ahd_linux_set_pcomp_en,
2753a4b53a11806f5c0824eb4115b1de8206ed7bb89aHannes Reinecke	.show_pcomp_en	= 1,
275488ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	.set_hold_mcs	= ahd_linux_set_hold_mcs,
275588ff29a4a5a8c4e0ecf375f783be071d1e7e264dJames Bottomley	.show_hold_mcs	= 1,
275673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke};
275773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
275873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
275973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke
27601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init
27611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_linux_init(void)
27621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
276373a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	ahd_linux_transport_template = spi_attach_transport(&ahd_linux_transport_functions);
276473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (!ahd_linux_transport_template)
276573a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return -ENODEV;
276673a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scsi_transport_reserve_target(ahd_linux_transport_template,
276773a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      sizeof(struct ahd_linux_target));
276873a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	scsi_transport_reserve_device(ahd_linux_transport_template,
276973a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke				      sizeof(struct ahd_linux_device));
277073a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	if (ahd_linux_detect(&aic79xx_driver_template) > 0)
277173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke		return 0;
277273a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spi_release_transport(ahd_linux_transport_template);
2773a80b3424d9fde3c4b6d62adaf6dda78128dc5c27James Bottomley
277473a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	return -ENODEV;
27751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
27761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
27771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit
27781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsahd_linux_exit(void)
27791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
27801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ahd_linux_pci_exit();
278173a25462100772b72a5d62fd66dff01b53018618Hannes Reinecke	spi_release_transport(ahd_linux_transport_template);
27821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
27831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
27841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(ahd_linux_init);
27851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(ahd_linux_exit);
2786