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![FUJITA Tomonori](/assets/img/avatar_default.png)
This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in several LLDs. It's a preparation for the future changes to remove sense_buffer array in scsi_cmnd structure. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2747 lines
75 KiB
C
2747 lines
75 KiB
C
/*
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* Adaptec AIC79xx device driver for Linux.
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*
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* $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $
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*
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* --------------------------------------------------------------------------
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* Copyright (c) 1994-2000 Justin T. Gibbs.
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* Copyright (c) 1997-1999 Doug Ledford
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* Copyright (c) 2000-2003 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "aic79xx_osm.h"
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#include "aic79xx_inline.h"
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#include <scsi/scsicam.h>
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static struct scsi_transport_template *ahd_linux_transport_template = NULL;
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#include <linux/init.h> /* __setup */
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#include <linux/mm.h> /* For fetching system memory size */
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#include <linux/blkdev.h> /* For block_size() */
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#include <linux/delay.h> /* For ssleep/msleep */
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#include <linux/device.h>
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/*
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* Bucket size for counting good commands in between bad ones.
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*/
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#define AHD_LINUX_ERR_THRESH 1000
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/*
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* Set this to the delay in seconds after SCSI bus reset.
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* Note, we honor this only for the initial bus reset.
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* The scsi error recovery code performs its own bus settle
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* delay handling for error recovery actions.
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*/
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#ifdef CONFIG_AIC79XX_RESET_DELAY_MS
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#define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
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#else
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#define AIC79XX_RESET_DELAY 5000
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#endif
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/*
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* To change the default number of tagged transactions allowed per-device,
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* add a line to the lilo.conf file like:
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* append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
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* which will result in the first four devices on the first two
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* controllers being set to a tagged queue depth of 32.
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*
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* The tag_commands is an array of 16 to allow for wide and twin adapters.
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* Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
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* for channel 1.
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*/
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typedef struct {
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uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */
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} adapter_tag_info_t;
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/*
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* Modify this as you see fit for your system.
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*
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* 0 tagged queuing disabled
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* 1 <= n <= 253 n == max tags ever dispatched.
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*
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* The driver will throttle the number of commands dispatched to a
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* device if it returns queue full. For devices with a fixed maximum
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* queue depth, the driver will eventually determine this depth and
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* lock it in (a console message is printed to indicate that a lock
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* has occurred). On some devices, queue full is returned for a temporary
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* resource shortage. These devices will return queue full at varying
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* depths. The driver will throttle back when the queue fulls occur and
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* attempt to slowly increase the depth over time as the device recovers
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* from the resource shortage.
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*
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* In this example, the first line will disable tagged queueing for all
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* the devices on the first probed aic79xx adapter.
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*
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* The second line enables tagged queueing with 4 commands/LUN for IDs
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* (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
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* driver to attempt to use up to 64 tags for ID 1.
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*
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* The third line is the same as the first line.
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*
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* The fourth line disables tagged queueing for devices 0 and 3. It
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* enables tagged queueing for the other IDs, with 16 commands/LUN
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* for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
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* IDs 2, 5-7, and 9-15.
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*/
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/*
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* NOTE: The below structure is for reference only, the actual structure
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* to modify in order to change things is just below this comment block.
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adapter_tag_info_t aic79xx_tag_info[] =
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{
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{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
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{{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
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{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
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{{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
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};
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*/
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#ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
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#define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
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#else
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#define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
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#endif
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#define AIC79XX_CONFIGED_TAG_COMMANDS { \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
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AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
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}
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/*
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* By default, use the number of commands specified by
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* the users kernel configuration.
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*/
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static adapter_tag_info_t aic79xx_tag_info[] =
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{
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS},
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{AIC79XX_CONFIGED_TAG_COMMANDS}
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};
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/*
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* The I/O cell on the chip is very configurable in respect to its analog
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* characteristics. Set the defaults here; they can be overriden with
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* the proper insmod parameters.
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*/
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struct ahd_linux_iocell_opts
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{
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uint8_t precomp;
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uint8_t slewrate;
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uint8_t amplitude;
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};
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#define AIC79XX_DEFAULT_PRECOMP 0xFF
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#define AIC79XX_DEFAULT_SLEWRATE 0xFF
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#define AIC79XX_DEFAULT_AMPLITUDE 0xFF
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#define AIC79XX_DEFAULT_IOOPTS \
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{ \
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AIC79XX_DEFAULT_PRECOMP, \
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AIC79XX_DEFAULT_SLEWRATE, \
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AIC79XX_DEFAULT_AMPLITUDE \
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}
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#define AIC79XX_PRECOMP_INDEX 0
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#define AIC79XX_SLEWRATE_INDEX 1
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#define AIC79XX_AMPLITUDE_INDEX 2
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static struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
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{
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS,
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AIC79XX_DEFAULT_IOOPTS
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};
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/*
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* There should be a specific return value for this in scsi.h, but
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* it seems that most drivers ignore it.
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*/
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#define DID_UNDERFLOW DID_ERROR
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void
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ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
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{
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printk("(scsi%d:%c:%d:%d): ",
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ahd->platform_data->host->host_no,
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scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X',
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scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1,
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scb != NULL ? SCB_GET_LUN(scb) : -1);
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}
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/*
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* XXX - these options apply unilaterally to _all_ adapters
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* cards in the system. This should be fixed. Exceptions to this
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* rule are noted in the comments.
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*/
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/*
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* Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
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* has no effect on any later resets that might occur due to things like
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* SCSI bus timeouts.
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*/
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static uint32_t aic79xx_no_reset;
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/*
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* Should we force EXTENDED translation on a controller.
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* 0 == Use whatever is in the SEEPROM or default to off
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* 1 == Use whatever is in the SEEPROM or default to on
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*/
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static uint32_t aic79xx_extended;
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/*
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* PCI bus parity checking of the Adaptec controllers. This is somewhat
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* dubious at best. To my knowledge, this option has never actually
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* solved a PCI parity problem, but on certain machines with broken PCI
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* chipset configurations, it can generate tons of false error messages.
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* It's included in the driver for completeness.
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* 0 = Shut off PCI parity check
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* non-0 = Enable PCI parity check
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*
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* NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
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* variable to -1 you would actually want to simply pass the variable
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* name without a number. That will invert the 0 which will result in
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* -1.
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*/
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static uint32_t aic79xx_pci_parity = ~0;
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/*
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* There are lots of broken chipsets in the world. Some of them will
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* violate the PCI spec when we issue byte sized memory writes to our
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* controller. I/O mapped register access, if allowed by the given
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* platform, will work in almost all cases.
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*/
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uint32_t aic79xx_allow_memio = ~0;
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/*
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* So that we can set how long each device is given as a selection timeout.
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* The table of values goes like this:
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* 0 - 256ms
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* 1 - 128ms
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* 2 - 64ms
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* 3 - 32ms
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* We default to 256ms because some older devices need a longer time
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* to respond to initial selection.
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*/
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static uint32_t aic79xx_seltime;
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/*
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* Certain devices do not perform any aging on commands. Should the
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* device be saturated by commands in one portion of the disk, it is
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* possible for transactions on far away sectors to never be serviced.
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* To handle these devices, we can periodically send an ordered tag to
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* force all outstanding transactions to be serviced prior to a new
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* transaction.
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*/
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static uint32_t aic79xx_periodic_otag;
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/* Some storage boxes are using an LSI chip which has a bug making it
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* impossible to use aic79xx Rev B chip in 320 speeds. The following
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* storage boxes have been reported to be buggy:
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* EonStor 3U 16-Bay: U16U-G3A3
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* EonStor 2U 12-Bay: U12U-G3A3
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* SentinelRAID: 2500F R5 / R6
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* SentinelRAID: 2500F R1
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* SentinelRAID: 2500F/1500F
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* SentinelRAID: 150F
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*
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* To get around this LSI bug, you can set your board to 160 mode
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* or you can enable the SLOWCRC bit.
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*/
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uint32_t aic79xx_slowcrc;
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/*
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* Module information and settable options.
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*/
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static char *aic79xx = NULL;
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MODULE_AUTHOR("Maintainer: Hannes Reinecke <hare@suse.de>");
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MODULE_DESCRIPTION("Adaptec AIC790X U320 SCSI Host Bus Adapter driver");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_VERSION(AIC79XX_DRIVER_VERSION);
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module_param(aic79xx, charp, 0444);
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MODULE_PARM_DESC(aic79xx,
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"period-delimited options string:\n"
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" verbose Enable verbose/diagnostic logging\n"
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" allow_memio Allow device registers to be memory mapped\n"
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" debug Bitmask of debug values to enable\n"
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" no_reset Supress initial bus resets\n"
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" extended Enable extended geometry on all controllers\n"
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" periodic_otag Send an ordered tagged transaction\n"
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" periodically to prevent tag starvation.\n"
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" This may be required by some older disk\n"
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" or drives/RAID arrays.\n"
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" tag_info:<tag_str> Set per-target tag depth\n"
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" global_tag_depth:<int> Global tag depth for all targets on all buses\n"
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" slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
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" precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
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" amplitude:<int> Set the signal amplitude (0-7).\n"
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" seltime:<int> Selection Timeout:\n"
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" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
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" slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
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"\n"
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" Sample /etc/modprobe.conf line:\n"
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" Enable verbose logging\n"
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" Set tag depth on Controller 2/Target 2 to 10 tags\n"
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" Shorten the selection timeout to 128ms\n"
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"\n"
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" options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
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);
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static void ahd_linux_handle_scsi_status(struct ahd_softc *,
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struct scsi_device *,
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struct scb *);
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static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
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struct scsi_cmnd *cmd);
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static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd);
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static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
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static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
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struct ahd_devinfo *devinfo);
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static void ahd_linux_device_queue_depth(struct scsi_device *);
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static int ahd_linux_run_command(struct ahd_softc*,
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struct ahd_linux_device *,
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struct scsi_cmnd *);
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static void ahd_linux_setup_tag_info_global(char *p);
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static int aic79xx_setup(char *c);
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static void ahd_freeze_simq(struct ahd_softc *ahd);
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static void ahd_release_simq(struct ahd_softc *ahd);
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static int ahd_linux_unit;
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/****************************** Inlines ***************************************/
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static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
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static __inline void
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ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
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{
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struct scsi_cmnd *cmd;
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cmd = scb->io_ctx;
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ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
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scsi_dma_unmap(cmd);
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}
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/******************************** Macros **************************************/
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#define BUILD_SCSIID(ahd, cmd) \
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(((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
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/*
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* Return a string describing the driver.
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*/
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static const char *
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ahd_linux_info(struct Scsi_Host *host)
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{
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static char buffer[512];
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char ahd_info[256];
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char *bp;
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struct ahd_softc *ahd;
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bp = &buffer[0];
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ahd = *(struct ahd_softc **)host->hostdata;
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memset(bp, 0, sizeof(buffer));
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strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
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strcat(bp, AIC79XX_DRIVER_VERSION);
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strcat(bp, "\n");
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strcat(bp, " <");
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strcat(bp, ahd->description);
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strcat(bp, ">\n");
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strcat(bp, " ");
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ahd_controller_info(ahd, ahd_info);
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strcat(bp, ahd_info);
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return (bp);
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}
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/*
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* Queue an SCB to the controller.
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*/
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static int
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ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
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{
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struct ahd_softc *ahd;
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struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
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int rtn = SCSI_MLQUEUE_HOST_BUSY;
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ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
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cmd->scsi_done = scsi_done;
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cmd->result = CAM_REQ_INPROG << 16;
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rtn = ahd_linux_run_command(ahd, dev, cmd);
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return rtn;
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}
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static inline struct scsi_target **
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ahd_linux_target_in_softc(struct scsi_target *starget)
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{
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struct ahd_softc *ahd =
|
|
*((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
|
|
unsigned int target_offset;
|
|
|
|
target_offset = starget->id;
|
|
if (starget->channel != 0)
|
|
target_offset += 8;
|
|
|
|
return &ahd->platform_data->starget[target_offset];
|
|
}
|
|
|
|
static int
|
|
ahd_linux_target_alloc(struct scsi_target *starget)
|
|
{
|
|
struct ahd_softc *ahd =
|
|
*((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
|
|
struct seeprom_config *sc = ahd->seep_config;
|
|
unsigned long flags;
|
|
struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
|
|
struct ahd_devinfo devinfo;
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
struct ahd_tmode_tstate *tstate;
|
|
char channel = starget->channel + 'A';
|
|
|
|
ahd_lock(ahd, &flags);
|
|
|
|
BUG_ON(*ahd_targp != NULL);
|
|
|
|
*ahd_targp = starget;
|
|
|
|
if (sc) {
|
|
int flags = sc->device_flags[starget->id];
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
|
|
starget->id, &tstate);
|
|
|
|
if ((flags & CFPACKETIZED) == 0) {
|
|
/* Do not negotiate packetized transfers */
|
|
spi_rd_strm(starget) = 0;
|
|
spi_pcomp_en(starget) = 0;
|
|
spi_rti(starget) = 0;
|
|
spi_wr_flow(starget) = 0;
|
|
spi_hold_mcs(starget) = 0;
|
|
} else {
|
|
if ((ahd->features & AHD_RTI) == 0)
|
|
spi_rti(starget) = 0;
|
|
}
|
|
|
|
if ((flags & CFQAS) == 0)
|
|
spi_qas(starget) = 0;
|
|
|
|
/* Transinfo values have been set to BIOS settings */
|
|
spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
|
|
spi_min_period(starget) = tinfo->user.period;
|
|
spi_max_offset(starget) = tinfo->user.offset;
|
|
}
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
|
|
starget->id, &tstate);
|
|
ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
|
|
CAM_LUN_WILDCARD, channel,
|
|
ROLE_INITIATOR);
|
|
ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
|
|
AHD_TRANS_GOAL, /*paused*/FALSE);
|
|
ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
|
|
AHD_TRANS_GOAL, /*paused*/FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ahd_linux_target_destroy(struct scsi_target *starget)
|
|
{
|
|
struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
|
|
|
|
*ahd_targp = NULL;
|
|
}
|
|
|
|
static int
|
|
ahd_linux_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct ahd_softc *ahd =
|
|
*((struct ahd_softc **)sdev->host->hostdata);
|
|
struct ahd_linux_device *dev;
|
|
|
|
if (bootverbose)
|
|
printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
|
|
|
|
dev = scsi_transport_device_data(sdev);
|
|
memset(dev, 0, sizeof(*dev));
|
|
|
|
/*
|
|
* We start out life using untagged
|
|
* transactions of which we allow one.
|
|
*/
|
|
dev->openings = 1;
|
|
|
|
/*
|
|
* Set maxtags to 0. This will be changed if we
|
|
* later determine that we are dealing with
|
|
* a tagged queuing capable device.
|
|
*/
|
|
dev->maxtags = 0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ahd_linux_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct ahd_softc *ahd;
|
|
|
|
ahd = *((struct ahd_softc **)sdev->host->hostdata);
|
|
if (bootverbose)
|
|
sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
|
|
|
|
ahd_linux_device_queue_depth(sdev);
|
|
|
|
/* Initial Domain Validation */
|
|
if (!spi_initial_dv(sdev->sdev_target))
|
|
spi_dv_device(sdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(__i386__)
|
|
/*
|
|
* Return the disk geometry for the given SCSI device.
|
|
*/
|
|
static int
|
|
ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
|
|
sector_t capacity, int geom[])
|
|
{
|
|
uint8_t *bh;
|
|
int heads;
|
|
int sectors;
|
|
int cylinders;
|
|
int ret;
|
|
int extended;
|
|
struct ahd_softc *ahd;
|
|
|
|
ahd = *((struct ahd_softc **)sdev->host->hostdata);
|
|
|
|
bh = scsi_bios_ptable(bdev);
|
|
if (bh) {
|
|
ret = scsi_partsize(bh, capacity,
|
|
&geom[2], &geom[0], &geom[1]);
|
|
kfree(bh);
|
|
if (ret != -1)
|
|
return (ret);
|
|
}
|
|
heads = 64;
|
|
sectors = 32;
|
|
cylinders = aic_sector_div(capacity, heads, sectors);
|
|
|
|
if (aic79xx_extended != 0)
|
|
extended = 1;
|
|
else
|
|
extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
|
|
if (extended && cylinders >= 1024) {
|
|
heads = 255;
|
|
sectors = 63;
|
|
cylinders = aic_sector_div(capacity, heads, sectors);
|
|
}
|
|
geom[0] = heads;
|
|
geom[1] = sectors;
|
|
geom[2] = cylinders;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Abort the current SCSI command(s).
|
|
*/
|
|
static int
|
|
ahd_linux_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
int error;
|
|
|
|
error = ahd_linux_queue_abort_cmd(cmd);
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Attempt to send a target reset message to the device that timed out.
|
|
*/
|
|
static int
|
|
ahd_linux_dev_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct ahd_softc *ahd;
|
|
struct ahd_linux_device *dev;
|
|
struct scb *reset_scb;
|
|
u_int cdb_byte;
|
|
int retval = SUCCESS;
|
|
int paused;
|
|
int wait;
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
struct ahd_tmode_tstate *tstate;
|
|
unsigned long flags;
|
|
DECLARE_COMPLETION_ONSTACK(done);
|
|
|
|
reset_scb = NULL;
|
|
paused = FALSE;
|
|
wait = FALSE;
|
|
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
|
|
|
|
scmd_printk(KERN_INFO, cmd,
|
|
"Attempting to queue a TARGET RESET message:");
|
|
|
|
printf("CDB:");
|
|
for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
|
|
printf(" 0x%x", cmd->cmnd[cdb_byte]);
|
|
printf("\n");
|
|
|
|
/*
|
|
* Determine if we currently own this command.
|
|
*/
|
|
dev = scsi_transport_device_data(cmd->device);
|
|
|
|
if (dev == NULL) {
|
|
/*
|
|
* No target device for this command exists,
|
|
* so we must not still own the command.
|
|
*/
|
|
scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
|
|
return SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Generate us a new SCB
|
|
*/
|
|
reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
|
|
if (!reset_scb) {
|
|
scmd_printk(KERN_INFO, cmd, "No SCB available\n");
|
|
return FAILED;
|
|
}
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
|
|
cmd->device->id, &tstate);
|
|
reset_scb->io_ctx = cmd;
|
|
reset_scb->platform_data->dev = dev;
|
|
reset_scb->sg_count = 0;
|
|
ahd_set_residual(reset_scb, 0);
|
|
ahd_set_sense_residual(reset_scb, 0);
|
|
reset_scb->platform_data->xfer_len = 0;
|
|
reset_scb->hscb->control = 0;
|
|
reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
|
|
reset_scb->hscb->lun = cmd->device->lun;
|
|
reset_scb->hscb->cdb_len = 0;
|
|
reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
|
|
reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
|
|
if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
|
|
reset_scb->flags |= SCB_PACKETIZED;
|
|
} else {
|
|
reset_scb->hscb->control |= MK_MESSAGE;
|
|
}
|
|
dev->openings--;
|
|
dev->active++;
|
|
dev->commands_issued++;
|
|
|
|
ahd_lock(ahd, &flags);
|
|
|
|
LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
|
|
ahd_queue_scb(ahd, reset_scb);
|
|
|
|
ahd->platform_data->eh_done = &done;
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
printf("%s: Device reset code sleeping\n", ahd_name(ahd));
|
|
if (!wait_for_completion_timeout(&done, 5 * HZ)) {
|
|
ahd_lock(ahd, &flags);
|
|
ahd->platform_data->eh_done = NULL;
|
|
ahd_unlock(ahd, &flags);
|
|
printf("%s: Device reset timer expired (active %d)\n",
|
|
ahd_name(ahd), dev->active);
|
|
retval = FAILED;
|
|
}
|
|
printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*
|
|
* Reset the SCSI bus.
|
|
*/
|
|
static int
|
|
ahd_linux_bus_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct ahd_softc *ahd;
|
|
int found;
|
|
unsigned long flags;
|
|
|
|
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
|
|
printf("%s: Bus reset called for cmd %p\n",
|
|
ahd_name(ahd), cmd);
|
|
#endif
|
|
ahd_lock(ahd, &flags);
|
|
|
|
found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
|
|
/*initiate reset*/TRUE);
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
if (bootverbose)
|
|
printf("%s: SCSI bus reset delivered. "
|
|
"%d SCBs aborted.\n", ahd_name(ahd), found);
|
|
|
|
return (SUCCESS);
|
|
}
|
|
|
|
struct scsi_host_template aic79xx_driver_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "aic79xx",
|
|
.proc_name = "aic79xx",
|
|
.proc_info = ahd_linux_proc_info,
|
|
.info = ahd_linux_info,
|
|
.queuecommand = ahd_linux_queue,
|
|
.eh_abort_handler = ahd_linux_abort,
|
|
.eh_device_reset_handler = ahd_linux_dev_reset,
|
|
.eh_bus_reset_handler = ahd_linux_bus_reset,
|
|
#if defined(__i386__)
|
|
.bios_param = ahd_linux_biosparam,
|
|
#endif
|
|
.can_queue = AHD_MAX_QUEUE,
|
|
.this_id = -1,
|
|
.max_sectors = 8192,
|
|
.cmd_per_lun = 2,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.use_sg_chaining = ENABLE_SG_CHAINING,
|
|
.slave_alloc = ahd_linux_slave_alloc,
|
|
.slave_configure = ahd_linux_slave_configure,
|
|
.target_alloc = ahd_linux_target_alloc,
|
|
.target_destroy = ahd_linux_target_destroy,
|
|
};
|
|
|
|
/******************************** Bus DMA *************************************/
|
|
int
|
|
ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
|
|
bus_size_t alignment, bus_size_t boundary,
|
|
dma_addr_t lowaddr, dma_addr_t highaddr,
|
|
bus_dma_filter_t *filter, void *filterarg,
|
|
bus_size_t maxsize, int nsegments,
|
|
bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
|
|
{
|
|
bus_dma_tag_t dmat;
|
|
|
|
dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
|
|
if (dmat == NULL)
|
|
return (ENOMEM);
|
|
|
|
/*
|
|
* Linux is very simplistic about DMA memory. For now don't
|
|
* maintain all specification information. Once Linux supplies
|
|
* better facilities for doing these operations, or the
|
|
* needs of this particular driver change, we might need to do
|
|
* more here.
|
|
*/
|
|
dmat->alignment = alignment;
|
|
dmat->boundary = boundary;
|
|
dmat->maxsize = maxsize;
|
|
*ret_tag = dmat;
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
|
|
{
|
|
free(dmat, M_DEVBUF);
|
|
}
|
|
|
|
int
|
|
ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
|
|
int flags, bus_dmamap_t *mapp)
|
|
{
|
|
*vaddr = pci_alloc_consistent(ahd->dev_softc,
|
|
dmat->maxsize, mapp);
|
|
if (*vaddr == NULL)
|
|
return (ENOMEM);
|
|
return(0);
|
|
}
|
|
|
|
void
|
|
ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
|
|
void* vaddr, bus_dmamap_t map)
|
|
{
|
|
pci_free_consistent(ahd->dev_softc, dmat->maxsize,
|
|
vaddr, map);
|
|
}
|
|
|
|
int
|
|
ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
|
|
void *cb_arg, int flags)
|
|
{
|
|
/*
|
|
* Assume for now that this will only be used during
|
|
* initialization and not for per-transaction buffer mapping.
|
|
*/
|
|
bus_dma_segment_t stack_sg;
|
|
|
|
stack_sg.ds_addr = map;
|
|
stack_sg.ds_len = dmat->maxsize;
|
|
cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
|
|
{
|
|
}
|
|
|
|
int
|
|
ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
|
|
{
|
|
/* Nothing to do */
|
|
return (0);
|
|
}
|
|
|
|
/********************* Platform Dependent Functions ***************************/
|
|
static void
|
|
ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
|
|
{
|
|
|
|
if ((instance >= 0)
|
|
&& (instance < ARRAY_SIZE(aic79xx_iocell_info))) {
|
|
uint8_t *iocell_info;
|
|
|
|
iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
|
|
iocell_info[index] = value & 0xFFFF;
|
|
if (bootverbose)
|
|
printf("iocell[%d:%ld] = %d\n", instance, index, value);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ahd_linux_setup_tag_info_global(char *p)
|
|
{
|
|
int tags, i, j;
|
|
|
|
tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
|
|
printf("Setting Global Tags= %d\n", tags);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) {
|
|
for (j = 0; j < AHD_NUM_TARGETS; j++) {
|
|
aic79xx_tag_info[i].tag_commands[j] = tags;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
|
|
{
|
|
|
|
if ((instance >= 0) && (targ >= 0)
|
|
&& (instance < ARRAY_SIZE(aic79xx_tag_info))
|
|
&& (targ < AHD_NUM_TARGETS)) {
|
|
aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
|
|
if (bootverbose)
|
|
printf("tag_info[%d:%d] = %d\n", instance, targ, value);
|
|
}
|
|
}
|
|
|
|
static char *
|
|
ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
|
|
void (*callback)(u_long, int, int, int32_t),
|
|
u_long callback_arg)
|
|
{
|
|
char *tok_end;
|
|
char *tok_end2;
|
|
int i;
|
|
int instance;
|
|
int targ;
|
|
int done;
|
|
char tok_list[] = {'.', ',', '{', '}', '\0'};
|
|
|
|
/* All options use a ':' name/arg separator */
|
|
if (*opt_arg != ':')
|
|
return (opt_arg);
|
|
opt_arg++;
|
|
instance = -1;
|
|
targ = -1;
|
|
done = FALSE;
|
|
/*
|
|
* Restore separator that may be in
|
|
* the middle of our option argument.
|
|
*/
|
|
tok_end = strchr(opt_arg, '\0');
|
|
if (tok_end < end)
|
|
*tok_end = ',';
|
|
while (!done) {
|
|
switch (*opt_arg) {
|
|
case '{':
|
|
if (instance == -1) {
|
|
instance = 0;
|
|
} else {
|
|
if (depth > 1) {
|
|
if (targ == -1)
|
|
targ = 0;
|
|
} else {
|
|
printf("Malformed Option %s\n",
|
|
opt_name);
|
|
done = TRUE;
|
|
}
|
|
}
|
|
opt_arg++;
|
|
break;
|
|
case '}':
|
|
if (targ != -1)
|
|
targ = -1;
|
|
else if (instance != -1)
|
|
instance = -1;
|
|
opt_arg++;
|
|
break;
|
|
case ',':
|
|
case '.':
|
|
if (instance == -1)
|
|
done = TRUE;
|
|
else if (targ >= 0)
|
|
targ++;
|
|
else if (instance >= 0)
|
|
instance++;
|
|
opt_arg++;
|
|
break;
|
|
case '\0':
|
|
done = TRUE;
|
|
break;
|
|
default:
|
|
tok_end = end;
|
|
for (i = 0; tok_list[i]; i++) {
|
|
tok_end2 = strchr(opt_arg, tok_list[i]);
|
|
if ((tok_end2) && (tok_end2 < tok_end))
|
|
tok_end = tok_end2;
|
|
}
|
|
callback(callback_arg, instance, targ,
|
|
simple_strtol(opt_arg, NULL, 0));
|
|
opt_arg = tok_end;
|
|
break;
|
|
}
|
|
}
|
|
return (opt_arg);
|
|
}
|
|
|
|
/*
|
|
* Handle Linux boot parameters. This routine allows for assigning a value
|
|
* to a parameter with a ':' between the parameter and the value.
|
|
* ie. aic79xx=stpwlev:1,extended
|
|
*/
|
|
static int
|
|
aic79xx_setup(char *s)
|
|
{
|
|
int i, n;
|
|
char *p;
|
|
char *end;
|
|
|
|
static struct {
|
|
const char *name;
|
|
uint32_t *flag;
|
|
} options[] = {
|
|
{ "extended", &aic79xx_extended },
|
|
{ "no_reset", &aic79xx_no_reset },
|
|
{ "verbose", &aic79xx_verbose },
|
|
{ "allow_memio", &aic79xx_allow_memio},
|
|
#ifdef AHD_DEBUG
|
|
{ "debug", &ahd_debug },
|
|
#endif
|
|
{ "periodic_otag", &aic79xx_periodic_otag },
|
|
{ "pci_parity", &aic79xx_pci_parity },
|
|
{ "seltime", &aic79xx_seltime },
|
|
{ "tag_info", NULL },
|
|
{ "global_tag_depth", NULL},
|
|
{ "slewrate", NULL },
|
|
{ "precomp", NULL },
|
|
{ "amplitude", NULL },
|
|
{ "slowcrc", &aic79xx_slowcrc },
|
|
};
|
|
|
|
end = strchr(s, '\0');
|
|
|
|
/*
|
|
* XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
|
|
* will never be 0 in this case.
|
|
*/
|
|
n = 0;
|
|
|
|
while ((p = strsep(&s, ",.")) != NULL) {
|
|
if (*p == '\0')
|
|
continue;
|
|
for (i = 0; i < ARRAY_SIZE(options); i++) {
|
|
|
|
n = strlen(options[i].name);
|
|
if (strncmp(options[i].name, p, n) == 0)
|
|
break;
|
|
}
|
|
if (i == ARRAY_SIZE(options))
|
|
continue;
|
|
|
|
if (strncmp(p, "global_tag_depth", n) == 0) {
|
|
ahd_linux_setup_tag_info_global(p + n);
|
|
} else if (strncmp(p, "tag_info", n) == 0) {
|
|
s = ahd_parse_brace_option("tag_info", p + n, end,
|
|
2, ahd_linux_setup_tag_info, 0);
|
|
} else if (strncmp(p, "slewrate", n) == 0) {
|
|
s = ahd_parse_brace_option("slewrate",
|
|
p + n, end, 1, ahd_linux_setup_iocell_info,
|
|
AIC79XX_SLEWRATE_INDEX);
|
|
} else if (strncmp(p, "precomp", n) == 0) {
|
|
s = ahd_parse_brace_option("precomp",
|
|
p + n, end, 1, ahd_linux_setup_iocell_info,
|
|
AIC79XX_PRECOMP_INDEX);
|
|
} else if (strncmp(p, "amplitude", n) == 0) {
|
|
s = ahd_parse_brace_option("amplitude",
|
|
p + n, end, 1, ahd_linux_setup_iocell_info,
|
|
AIC79XX_AMPLITUDE_INDEX);
|
|
} else if (p[n] == ':') {
|
|
*(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
|
|
} else if (!strncmp(p, "verbose", n)) {
|
|
*(options[i].flag) = 1;
|
|
} else {
|
|
*(options[i].flag) ^= 0xFFFFFFFF;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
__setup("aic79xx=", aic79xx_setup);
|
|
|
|
uint32_t aic79xx_verbose;
|
|
|
|
int
|
|
ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
|
|
{
|
|
char buf[80];
|
|
struct Scsi_Host *host;
|
|
char *new_name;
|
|
u_long s;
|
|
int retval;
|
|
|
|
template->name = ahd->description;
|
|
host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
|
|
if (host == NULL)
|
|
return (ENOMEM);
|
|
|
|
*((struct ahd_softc **)host->hostdata) = ahd;
|
|
ahd->platform_data->host = host;
|
|
host->can_queue = AHD_MAX_QUEUE;
|
|
host->cmd_per_lun = 2;
|
|
host->sg_tablesize = AHD_NSEG;
|
|
host->this_id = ahd->our_id;
|
|
host->irq = ahd->platform_data->irq;
|
|
host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
|
|
host->max_lun = AHD_NUM_LUNS;
|
|
host->max_channel = 0;
|
|
host->sg_tablesize = AHD_NSEG;
|
|
ahd_lock(ahd, &s);
|
|
ahd_set_unit(ahd, ahd_linux_unit++);
|
|
ahd_unlock(ahd, &s);
|
|
sprintf(buf, "scsi%d", host->host_no);
|
|
new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
|
|
if (new_name != NULL) {
|
|
strcpy(new_name, buf);
|
|
ahd_set_name(ahd, new_name);
|
|
}
|
|
host->unique_id = ahd->unit;
|
|
ahd_linux_initialize_scsi_bus(ahd);
|
|
ahd_intr_enable(ahd, TRUE);
|
|
|
|
host->transportt = ahd_linux_transport_template;
|
|
|
|
retval = scsi_add_host(host, &ahd->dev_softc->dev);
|
|
if (retval) {
|
|
printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
|
|
scsi_host_put(host);
|
|
return retval;
|
|
}
|
|
|
|
scsi_scan_host(host);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Place the SCSI bus into a known state by either resetting it,
|
|
* or forcing transfer negotiations on the next command to any
|
|
* target.
|
|
*/
|
|
static void
|
|
ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
|
|
{
|
|
u_int target_id;
|
|
u_int numtarg;
|
|
unsigned long s;
|
|
|
|
target_id = 0;
|
|
numtarg = 0;
|
|
|
|
if (aic79xx_no_reset != 0)
|
|
ahd->flags &= ~AHD_RESET_BUS_A;
|
|
|
|
if ((ahd->flags & AHD_RESET_BUS_A) != 0)
|
|
ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
|
|
else
|
|
numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
|
|
|
|
ahd_lock(ahd, &s);
|
|
|
|
/*
|
|
* Force negotiation to async for all targets that
|
|
* will not see an initial bus reset.
|
|
*/
|
|
for (; target_id < numtarg; target_id++) {
|
|
struct ahd_devinfo devinfo;
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
struct ahd_tmode_tstate *tstate;
|
|
|
|
tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
|
|
target_id, &tstate);
|
|
ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
|
|
CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
|
|
ahd_update_neg_request(ahd, &devinfo, tstate,
|
|
tinfo, AHD_NEG_ALWAYS);
|
|
}
|
|
ahd_unlock(ahd, &s);
|
|
/* Give the bus some time to recover */
|
|
if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
|
|
ahd_freeze_simq(ahd);
|
|
msleep(AIC79XX_RESET_DELAY);
|
|
ahd_release_simq(ahd);
|
|
}
|
|
}
|
|
|
|
int
|
|
ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
|
|
{
|
|
ahd->platform_data =
|
|
malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
|
|
if (ahd->platform_data == NULL)
|
|
return (ENOMEM);
|
|
memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
|
|
ahd->platform_data->irq = AHD_LINUX_NOIRQ;
|
|
ahd_lockinit(ahd);
|
|
ahd->seltime = (aic79xx_seltime & 0x3) << 4;
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ahd_platform_free(struct ahd_softc *ahd)
|
|
{
|
|
struct scsi_target *starget;
|
|
int i;
|
|
|
|
if (ahd->platform_data != NULL) {
|
|
/* destroy all of the device and target objects */
|
|
for (i = 0; i < AHD_NUM_TARGETS; i++) {
|
|
starget = ahd->platform_data->starget[i];
|
|
if (starget != NULL) {
|
|
ahd->platform_data->starget[i] = NULL;
|
|
}
|
|
}
|
|
|
|
if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
|
|
free_irq(ahd->platform_data->irq, ahd);
|
|
if (ahd->tags[0] == BUS_SPACE_PIO
|
|
&& ahd->bshs[0].ioport != 0)
|
|
release_region(ahd->bshs[0].ioport, 256);
|
|
if (ahd->tags[1] == BUS_SPACE_PIO
|
|
&& ahd->bshs[1].ioport != 0)
|
|
release_region(ahd->bshs[1].ioport, 256);
|
|
if (ahd->tags[0] == BUS_SPACE_MEMIO
|
|
&& ahd->bshs[0].maddr != NULL) {
|
|
iounmap(ahd->bshs[0].maddr);
|
|
release_mem_region(ahd->platform_data->mem_busaddr,
|
|
0x1000);
|
|
}
|
|
if (ahd->platform_data->host)
|
|
scsi_host_put(ahd->platform_data->host);
|
|
|
|
free(ahd->platform_data, M_DEVBUF);
|
|
}
|
|
}
|
|
|
|
void
|
|
ahd_platform_init(struct ahd_softc *ahd)
|
|
{
|
|
/*
|
|
* Lookup and commit any modified IO Cell options.
|
|
*/
|
|
if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
|
|
struct ahd_linux_iocell_opts *iocell_opts;
|
|
|
|
iocell_opts = &aic79xx_iocell_info[ahd->unit];
|
|
if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
|
|
AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
|
|
if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
|
|
AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
|
|
if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
|
|
AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
|
|
{
|
|
ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
|
|
SCB_GET_CHANNEL(ahd, scb),
|
|
SCB_GET_LUN(scb), SCB_LIST_NULL,
|
|
ROLE_UNKNOWN, CAM_REQUEUE_REQ);
|
|
}
|
|
|
|
void
|
|
ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
|
|
struct ahd_devinfo *devinfo, ahd_queue_alg alg)
|
|
{
|
|
struct ahd_linux_device *dev;
|
|
int was_queuing;
|
|
int now_queuing;
|
|
|
|
if (sdev == NULL)
|
|
return;
|
|
|
|
dev = scsi_transport_device_data(sdev);
|
|
|
|
if (dev == NULL)
|
|
return;
|
|
was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
|
|
switch (alg) {
|
|
default:
|
|
case AHD_QUEUE_NONE:
|
|
now_queuing = 0;
|
|
break;
|
|
case AHD_QUEUE_BASIC:
|
|
now_queuing = AHD_DEV_Q_BASIC;
|
|
break;
|
|
case AHD_QUEUE_TAGGED:
|
|
now_queuing = AHD_DEV_Q_TAGGED;
|
|
break;
|
|
}
|
|
if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
|
|
&& (was_queuing != now_queuing)
|
|
&& (dev->active != 0)) {
|
|
dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
|
|
dev->qfrozen++;
|
|
}
|
|
|
|
dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
|
|
if (now_queuing) {
|
|
u_int usertags;
|
|
|
|
usertags = ahd_linux_user_tagdepth(ahd, devinfo);
|
|
if (!was_queuing) {
|
|
/*
|
|
* Start out agressively and allow our
|
|
* dynamic queue depth algorithm to take
|
|
* care of the rest.
|
|
*/
|
|
dev->maxtags = usertags;
|
|
dev->openings = dev->maxtags - dev->active;
|
|
}
|
|
if (dev->maxtags == 0) {
|
|
/*
|
|
* Queueing is disabled by the user.
|
|
*/
|
|
dev->openings = 1;
|
|
} else if (alg == AHD_QUEUE_TAGGED) {
|
|
dev->flags |= AHD_DEV_Q_TAGGED;
|
|
if (aic79xx_periodic_otag != 0)
|
|
dev->flags |= AHD_DEV_PERIODIC_OTAG;
|
|
} else
|
|
dev->flags |= AHD_DEV_Q_BASIC;
|
|
} else {
|
|
/* We can only have one opening. */
|
|
dev->maxtags = 0;
|
|
dev->openings = 1 - dev->active;
|
|
}
|
|
|
|
switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
|
|
case AHD_DEV_Q_BASIC:
|
|
scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
|
|
scsi_activate_tcq(sdev, dev->openings + dev->active);
|
|
break;
|
|
case AHD_DEV_Q_TAGGED:
|
|
scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
|
|
scsi_activate_tcq(sdev, dev->openings + dev->active);
|
|
break;
|
|
default:
|
|
/*
|
|
* We allow the OS to queue 2 untagged transactions to
|
|
* us at any time even though we can only execute them
|
|
* serially on the controller/device. This should
|
|
* remove some latency.
|
|
*/
|
|
scsi_deactivate_tcq(sdev, 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
|
|
int lun, u_int tag, role_t role, uint32_t status)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static u_int
|
|
ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
|
|
{
|
|
static int warned_user;
|
|
u_int tags;
|
|
|
|
tags = 0;
|
|
if ((ahd->user_discenable & devinfo->target_mask) != 0) {
|
|
if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) {
|
|
|
|
if (warned_user == 0) {
|
|
printf(KERN_WARNING
|
|
"aic79xx: WARNING: Insufficient tag_info instances\n"
|
|
"aic79xx: for installed controllers. Using defaults\n"
|
|
"aic79xx: Please update the aic79xx_tag_info array in\n"
|
|
"aic79xx: the aic79xx_osm.c source file.\n");
|
|
warned_user++;
|
|
}
|
|
tags = AHD_MAX_QUEUE;
|
|
} else {
|
|
adapter_tag_info_t *tag_info;
|
|
|
|
tag_info = &aic79xx_tag_info[ahd->unit];
|
|
tags = tag_info->tag_commands[devinfo->target_offset];
|
|
if (tags > AHD_MAX_QUEUE)
|
|
tags = AHD_MAX_QUEUE;
|
|
}
|
|
}
|
|
return (tags);
|
|
}
|
|
|
|
/*
|
|
* Determines the queue depth for a given device.
|
|
*/
|
|
static void
|
|
ahd_linux_device_queue_depth(struct scsi_device *sdev)
|
|
{
|
|
struct ahd_devinfo devinfo;
|
|
u_int tags;
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
|
|
|
|
ahd_compile_devinfo(&devinfo,
|
|
ahd->our_id,
|
|
sdev->sdev_target->id, sdev->lun,
|
|
sdev->sdev_target->channel == 0 ? 'A' : 'B',
|
|
ROLE_INITIATOR);
|
|
tags = ahd_linux_user_tagdepth(ahd, &devinfo);
|
|
if (tags != 0 && sdev->tagged_supported != 0) {
|
|
|
|
ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED);
|
|
ahd_send_async(ahd, devinfo.channel, devinfo.target,
|
|
devinfo.lun, AC_TRANSFER_NEG);
|
|
ahd_print_devinfo(ahd, &devinfo);
|
|
printf("Tagged Queuing enabled. Depth %d\n", tags);
|
|
} else {
|
|
ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE);
|
|
ahd_send_async(ahd, devinfo.channel, devinfo.target,
|
|
devinfo.lun, AC_TRANSFER_NEG);
|
|
}
|
|
}
|
|
|
|
static int
|
|
ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
|
|
struct scsi_cmnd *cmd)
|
|
{
|
|
struct scb *scb;
|
|
struct hardware_scb *hscb;
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
struct ahd_tmode_tstate *tstate;
|
|
u_int col_idx;
|
|
uint16_t mask;
|
|
unsigned long flags;
|
|
int nseg;
|
|
|
|
ahd_lock(ahd, &flags);
|
|
|
|
/*
|
|
* Get an scb to use.
|
|
*/
|
|
tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
|
|
cmd->device->id, &tstate);
|
|
if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
|
|
|| (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
|
|
col_idx = AHD_NEVER_COL_IDX;
|
|
} else {
|
|
col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
|
|
cmd->device->lun);
|
|
}
|
|
if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
|
|
ahd->flags |= AHD_RESOURCE_SHORTAGE;
|
|
ahd_unlock(ahd, &flags);
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
scb->io_ctx = cmd;
|
|
scb->platform_data->dev = dev;
|
|
hscb = scb->hscb;
|
|
cmd->host_scribble = (char *)scb;
|
|
|
|
/*
|
|
* Fill out basics of the HSCB.
|
|
*/
|
|
hscb->control = 0;
|
|
hscb->scsiid = BUILD_SCSIID(ahd, cmd);
|
|
hscb->lun = cmd->device->lun;
|
|
scb->hscb->task_management = 0;
|
|
mask = SCB_GET_TARGET_MASK(ahd, scb);
|
|
|
|
if ((ahd->user_discenable & mask) != 0)
|
|
hscb->control |= DISCENB;
|
|
|
|
if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
|
|
scb->flags |= SCB_PACKETIZED;
|
|
|
|
if ((tstate->auto_negotiate & mask) != 0) {
|
|
scb->flags |= SCB_AUTO_NEGOTIATE;
|
|
scb->hscb->control |= MK_MESSAGE;
|
|
}
|
|
|
|
if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
|
|
int msg_bytes;
|
|
uint8_t tag_msgs[2];
|
|
|
|
msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
|
|
if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
|
|
hscb->control |= tag_msgs[0];
|
|
if (tag_msgs[0] == MSG_ORDERED_TASK)
|
|
dev->commands_since_idle_or_otag = 0;
|
|
} else
|
|
if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
|
|
&& (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
|
|
hscb->control |= MSG_ORDERED_TASK;
|
|
dev->commands_since_idle_or_otag = 0;
|
|
} else {
|
|
hscb->control |= MSG_SIMPLE_TASK;
|
|
}
|
|
}
|
|
|
|
hscb->cdb_len = cmd->cmd_len;
|
|
memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
|
|
|
|
scb->platform_data->xfer_len = 0;
|
|
ahd_set_residual(scb, 0);
|
|
ahd_set_sense_residual(scb, 0);
|
|
scb->sg_count = 0;
|
|
|
|
nseg = scsi_dma_map(cmd);
|
|
BUG_ON(nseg < 0);
|
|
if (nseg > 0) {
|
|
void *sg = scb->sg_list;
|
|
struct scatterlist *cur_seg;
|
|
int i;
|
|
|
|
scb->platform_data->xfer_len = 0;
|
|
|
|
scsi_for_each_sg(cmd, cur_seg, nseg, i) {
|
|
dma_addr_t addr;
|
|
bus_size_t len;
|
|
|
|
addr = sg_dma_address(cur_seg);
|
|
len = sg_dma_len(cur_seg);
|
|
scb->platform_data->xfer_len += len;
|
|
sg = ahd_sg_setup(ahd, scb, sg, addr, len,
|
|
i == (nseg - 1));
|
|
}
|
|
}
|
|
|
|
LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
|
|
dev->openings--;
|
|
dev->active++;
|
|
dev->commands_issued++;
|
|
|
|
if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
|
|
dev->commands_since_idle_or_otag++;
|
|
scb->flags |= SCB_ACTIVE;
|
|
ahd_queue_scb(ahd, scb);
|
|
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* SCSI controller interrupt handler.
|
|
*/
|
|
irqreturn_t
|
|
ahd_linux_isr(int irq, void *dev_id)
|
|
{
|
|
struct ahd_softc *ahd;
|
|
u_long flags;
|
|
int ours;
|
|
|
|
ahd = (struct ahd_softc *) dev_id;
|
|
ahd_lock(ahd, &flags);
|
|
ours = ahd_intr(ahd);
|
|
ahd_unlock(ahd, &flags);
|
|
return IRQ_RETVAL(ours);
|
|
}
|
|
|
|
void
|
|
ahd_send_async(struct ahd_softc *ahd, char channel,
|
|
u_int target, u_int lun, ac_code code)
|
|
{
|
|
switch (code) {
|
|
case AC_TRANSFER_NEG:
|
|
{
|
|
char buf[80];
|
|
struct scsi_target *starget;
|
|
struct info_str info;
|
|
struct ahd_initiator_tinfo *tinfo;
|
|
struct ahd_tmode_tstate *tstate;
|
|
unsigned int target_ppr_options;
|
|
|
|
BUG_ON(target == CAM_TARGET_WILDCARD);
|
|
|
|
info.buffer = buf;
|
|
info.length = sizeof(buf);
|
|
info.offset = 0;
|
|
info.pos = 0;
|
|
tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
|
|
target, &tstate);
|
|
|
|
/*
|
|
* Don't bother reporting results while
|
|
* negotiations are still pending.
|
|
*/
|
|
if (tinfo->curr.period != tinfo->goal.period
|
|
|| tinfo->curr.width != tinfo->goal.width
|
|
|| tinfo->curr.offset != tinfo->goal.offset
|
|
|| tinfo->curr.ppr_options != tinfo->goal.ppr_options)
|
|
if (bootverbose == 0)
|
|
break;
|
|
|
|
/*
|
|
* Don't bother reporting results that
|
|
* are identical to those last reported.
|
|
*/
|
|
starget = ahd->platform_data->starget[target];
|
|
if (starget == NULL)
|
|
break;
|
|
|
|
target_ppr_options =
|
|
(spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
|
|
+ (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
|
|
+ (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
|
|
+ (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
|
|
+ (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
|
|
+ (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
|
|
+ (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
|
|
+ (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
|
|
|
|
if (tinfo->curr.period == spi_period(starget)
|
|
&& tinfo->curr.width == spi_width(starget)
|
|
&& tinfo->curr.offset == spi_offset(starget)
|
|
&& tinfo->curr.ppr_options == target_ppr_options)
|
|
if (bootverbose == 0)
|
|
break;
|
|
|
|
spi_period(starget) = tinfo->curr.period;
|
|
spi_width(starget) = tinfo->curr.width;
|
|
spi_offset(starget) = tinfo->curr.offset;
|
|
spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
|
|
spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
|
|
spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
|
|
spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
|
|
spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
|
|
spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
|
|
spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
|
|
spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
|
|
spi_display_xfer_agreement(starget);
|
|
break;
|
|
}
|
|
case AC_SENT_BDR:
|
|
{
|
|
WARN_ON(lun != CAM_LUN_WILDCARD);
|
|
scsi_report_device_reset(ahd->platform_data->host,
|
|
channel - 'A', target);
|
|
break;
|
|
}
|
|
case AC_BUS_RESET:
|
|
if (ahd->platform_data->host != NULL) {
|
|
scsi_report_bus_reset(ahd->platform_data->host,
|
|
channel - 'A');
|
|
}
|
|
break;
|
|
default:
|
|
panic("ahd_send_async: Unexpected async event");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Calls the higher level scsi done function and frees the scb.
|
|
*/
|
|
void
|
|
ahd_done(struct ahd_softc *ahd, struct scb *scb)
|
|
{
|
|
struct scsi_cmnd *cmd;
|
|
struct ahd_linux_device *dev;
|
|
|
|
if ((scb->flags & SCB_ACTIVE) == 0) {
|
|
printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
|
|
ahd_dump_card_state(ahd);
|
|
panic("Stopping for safety");
|
|
}
|
|
LIST_REMOVE(scb, pending_links);
|
|
cmd = scb->io_ctx;
|
|
dev = scb->platform_data->dev;
|
|
dev->active--;
|
|
dev->openings++;
|
|
if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
|
|
cmd->result &= ~(CAM_DEV_QFRZN << 16);
|
|
dev->qfrozen--;
|
|
}
|
|
ahd_linux_unmap_scb(ahd, scb);
|
|
|
|
/*
|
|
* Guard against stale sense data.
|
|
* The Linux mid-layer assumes that sense
|
|
* was retrieved anytime the first byte of
|
|
* the sense buffer looks "sane".
|
|
*/
|
|
cmd->sense_buffer[0] = 0;
|
|
if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
|
|
uint32_t amount_xferred;
|
|
|
|
amount_xferred =
|
|
ahd_get_transfer_length(scb) - ahd_get_residual(scb);
|
|
if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_MISC) != 0) {
|
|
ahd_print_path(ahd, scb);
|
|
printf("Set CAM_UNCOR_PARITY\n");
|
|
}
|
|
#endif
|
|
ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
|
|
#ifdef AHD_REPORT_UNDERFLOWS
|
|
/*
|
|
* This code is disabled by default as some
|
|
* clients of the SCSI system do not properly
|
|
* initialize the underflow parameter. This
|
|
* results in spurious termination of commands
|
|
* that complete as expected (e.g. underflow is
|
|
* allowed as command can return variable amounts
|
|
* of data.
|
|
*/
|
|
} else if (amount_xferred < scb->io_ctx->underflow) {
|
|
u_int i;
|
|
|
|
ahd_print_path(ahd, scb);
|
|
printf("CDB:");
|
|
for (i = 0; i < scb->io_ctx->cmd_len; i++)
|
|
printf(" 0x%x", scb->io_ctx->cmnd[i]);
|
|
printf("\n");
|
|
ahd_print_path(ahd, scb);
|
|
printf("Saw underflow (%ld of %ld bytes). "
|
|
"Treated as error\n",
|
|
ahd_get_residual(scb),
|
|
ahd_get_transfer_length(scb));
|
|
ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
|
|
#endif
|
|
} else {
|
|
ahd_set_transaction_status(scb, CAM_REQ_CMP);
|
|
}
|
|
} else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
|
|
ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
|
|
}
|
|
|
|
if (dev->openings == 1
|
|
&& ahd_get_transaction_status(scb) == CAM_REQ_CMP
|
|
&& ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
|
|
dev->tag_success_count++;
|
|
/*
|
|
* Some devices deal with temporary internal resource
|
|
* shortages by returning queue full. When the queue
|
|
* full occurrs, we throttle back. Slowly try to get
|
|
* back to our previous queue depth.
|
|
*/
|
|
if ((dev->openings + dev->active) < dev->maxtags
|
|
&& dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
|
|
dev->tag_success_count = 0;
|
|
dev->openings++;
|
|
}
|
|
|
|
if (dev->active == 0)
|
|
dev->commands_since_idle_or_otag = 0;
|
|
|
|
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
|
|
printf("Recovery SCB completes\n");
|
|
if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
|
|
|| ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
|
|
ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
|
|
|
|
if (ahd->platform_data->eh_done)
|
|
complete(ahd->platform_data->eh_done);
|
|
}
|
|
|
|
ahd_free_scb(ahd, scb);
|
|
ahd_linux_queue_cmd_complete(ahd, cmd);
|
|
}
|
|
|
|
static void
|
|
ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
|
|
struct scsi_device *sdev, struct scb *scb)
|
|
{
|
|
struct ahd_devinfo devinfo;
|
|
struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
|
|
|
|
ahd_compile_devinfo(&devinfo,
|
|
ahd->our_id,
|
|
sdev->sdev_target->id, sdev->lun,
|
|
sdev->sdev_target->channel == 0 ? 'A' : 'B',
|
|
ROLE_INITIATOR);
|
|
|
|
/*
|
|
* We don't currently trust the mid-layer to
|
|
* properly deal with queue full or busy. So,
|
|
* when one occurs, we tell the mid-layer to
|
|
* unconditionally requeue the command to us
|
|
* so that we can retry it ourselves. We also
|
|
* implement our own throttling mechanism so
|
|
* we don't clobber the device with too many
|
|
* commands.
|
|
*/
|
|
switch (ahd_get_scsi_status(scb)) {
|
|
default:
|
|
break;
|
|
case SCSI_STATUS_CHECK_COND:
|
|
case SCSI_STATUS_CMD_TERMINATED:
|
|
{
|
|
struct scsi_cmnd *cmd;
|
|
|
|
/*
|
|
* Copy sense information to the OS's cmd
|
|
* structure if it is available.
|
|
*/
|
|
cmd = scb->io_ctx;
|
|
if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
|
|
struct scsi_status_iu_header *siu;
|
|
u_int sense_size;
|
|
u_int sense_offset;
|
|
|
|
if (scb->flags & SCB_SENSE) {
|
|
sense_size = min(sizeof(struct scsi_sense_data)
|
|
- ahd_get_sense_residual(scb),
|
|
(u_long)SCSI_SENSE_BUFFERSIZE);
|
|
sense_offset = 0;
|
|
} else {
|
|
/*
|
|
* Copy only the sense data into the provided
|
|
* buffer.
|
|
*/
|
|
siu = (struct scsi_status_iu_header *)
|
|
scb->sense_data;
|
|
sense_size = min_t(size_t,
|
|
scsi_4btoul(siu->sense_length),
|
|
SCSI_SENSE_BUFFERSIZE);
|
|
sense_offset = SIU_SENSE_OFFSET(siu);
|
|
}
|
|
|
|
memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
|
|
memcpy(cmd->sense_buffer,
|
|
ahd_get_sense_buf(ahd, scb)
|
|
+ sense_offset, sense_size);
|
|
cmd->result |= (DRIVER_SENSE << 24);
|
|
|
|
#ifdef AHD_DEBUG
|
|
if (ahd_debug & AHD_SHOW_SENSE) {
|
|
int i;
|
|
|
|
printf("Copied %d bytes of sense data at %d:",
|
|
sense_size, sense_offset);
|
|
for (i = 0; i < sense_size; i++) {
|
|
if ((i & 0xF) == 0)
|
|
printf("\n");
|
|
printf("0x%x ", cmd->sense_buffer[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
case SCSI_STATUS_QUEUE_FULL:
|
|
/*
|
|
* By the time the core driver has returned this
|
|
* command, all other commands that were queued
|
|
* to us but not the device have been returned.
|
|
* This ensures that dev->active is equal to
|
|
* the number of commands actually queued to
|
|
* the device.
|
|
*/
|
|
dev->tag_success_count = 0;
|
|
if (dev->active != 0) {
|
|
/*
|
|
* Drop our opening count to the number
|
|
* of commands currently outstanding.
|
|
*/
|
|
dev->openings = 0;
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
|
|
ahd_print_path(ahd, scb);
|
|
printf("Dropping tag count to %d\n",
|
|
dev->active);
|
|
}
|
|
#endif
|
|
if (dev->active == dev->tags_on_last_queuefull) {
|
|
|
|
dev->last_queuefull_same_count++;
|
|
/*
|
|
* If we repeatedly see a queue full
|
|
* at the same queue depth, this
|
|
* device has a fixed number of tag
|
|
* slots. Lock in this tag depth
|
|
* so we stop seeing queue fulls from
|
|
* this device.
|
|
*/
|
|
if (dev->last_queuefull_same_count
|
|
== AHD_LOCK_TAGS_COUNT) {
|
|
dev->maxtags = dev->active;
|
|
ahd_print_path(ahd, scb);
|
|
printf("Locking max tag count at %d\n",
|
|
dev->active);
|
|
}
|
|
} else {
|
|
dev->tags_on_last_queuefull = dev->active;
|
|
dev->last_queuefull_same_count = 0;
|
|
}
|
|
ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
|
|
ahd_set_scsi_status(scb, SCSI_STATUS_OK);
|
|
ahd_platform_set_tags(ahd, sdev, &devinfo,
|
|
(dev->flags & AHD_DEV_Q_BASIC)
|
|
? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
|
|
break;
|
|
}
|
|
/*
|
|
* Drop down to a single opening, and treat this
|
|
* as if the target returned BUSY SCSI status.
|
|
*/
|
|
dev->openings = 1;
|
|
ahd_platform_set_tags(ahd, sdev, &devinfo,
|
|
(dev->flags & AHD_DEV_Q_BASIC)
|
|
? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
|
|
ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
|
|
{
|
|
int status;
|
|
int new_status = DID_OK;
|
|
int do_fallback = 0;
|
|
int scsi_status;
|
|
|
|
/*
|
|
* Map CAM error codes into Linux Error codes. We
|
|
* avoid the conversion so that the DV code has the
|
|
* full error information available when making
|
|
* state change decisions.
|
|
*/
|
|
|
|
status = ahd_cmd_get_transaction_status(cmd);
|
|
switch (status) {
|
|
case CAM_REQ_INPROG:
|
|
case CAM_REQ_CMP:
|
|
new_status = DID_OK;
|
|
break;
|
|
case CAM_AUTOSENSE_FAIL:
|
|
new_status = DID_ERROR;
|
|
/* Fallthrough */
|
|
case CAM_SCSI_STATUS_ERROR:
|
|
scsi_status = ahd_cmd_get_scsi_status(cmd);
|
|
|
|
switch(scsi_status) {
|
|
case SCSI_STATUS_CMD_TERMINATED:
|
|
case SCSI_STATUS_CHECK_COND:
|
|
if ((cmd->result >> 24) != DRIVER_SENSE) {
|
|
do_fallback = 1;
|
|
} else {
|
|
struct scsi_sense_data *sense;
|
|
|
|
sense = (struct scsi_sense_data *)
|
|
&cmd->sense_buffer;
|
|
if (sense->extra_len >= 5 &&
|
|
(sense->add_sense_code == 0x47
|
|
|| sense->add_sense_code == 0x48))
|
|
do_fallback = 1;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case CAM_REQ_ABORTED:
|
|
new_status = DID_ABORT;
|
|
break;
|
|
case CAM_BUSY:
|
|
new_status = DID_BUS_BUSY;
|
|
break;
|
|
case CAM_REQ_INVALID:
|
|
case CAM_PATH_INVALID:
|
|
new_status = DID_BAD_TARGET;
|
|
break;
|
|
case CAM_SEL_TIMEOUT:
|
|
new_status = DID_NO_CONNECT;
|
|
break;
|
|
case CAM_SCSI_BUS_RESET:
|
|
case CAM_BDR_SENT:
|
|
new_status = DID_RESET;
|
|
break;
|
|
case CAM_UNCOR_PARITY:
|
|
new_status = DID_PARITY;
|
|
do_fallback = 1;
|
|
break;
|
|
case CAM_CMD_TIMEOUT:
|
|
new_status = DID_TIME_OUT;
|
|
do_fallback = 1;
|
|
break;
|
|
case CAM_REQ_CMP_ERR:
|
|
case CAM_UNEXP_BUSFREE:
|
|
case CAM_DATA_RUN_ERR:
|
|
new_status = DID_ERROR;
|
|
do_fallback = 1;
|
|
break;
|
|
case CAM_UA_ABORT:
|
|
case CAM_NO_HBA:
|
|
case CAM_SEQUENCE_FAIL:
|
|
case CAM_CCB_LEN_ERR:
|
|
case CAM_PROVIDE_FAIL:
|
|
case CAM_REQ_TERMIO:
|
|
case CAM_UNREC_HBA_ERROR:
|
|
case CAM_REQ_TOO_BIG:
|
|
new_status = DID_ERROR;
|
|
break;
|
|
case CAM_REQUEUE_REQ:
|
|
new_status = DID_REQUEUE;
|
|
break;
|
|
default:
|
|
/* We should never get here */
|
|
new_status = DID_ERROR;
|
|
break;
|
|
}
|
|
|
|
if (do_fallback) {
|
|
printf("%s: device overrun (status %x) on %d:%d:%d\n",
|
|
ahd_name(ahd), status, cmd->device->channel,
|
|
cmd->device->id, cmd->device->lun);
|
|
}
|
|
|
|
ahd_cmd_set_transaction_status(cmd, new_status);
|
|
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
|
|
static void
|
|
ahd_freeze_simq(struct ahd_softc *ahd)
|
|
{
|
|
scsi_block_requests(ahd->platform_data->host);
|
|
}
|
|
|
|
static void
|
|
ahd_release_simq(struct ahd_softc *ahd)
|
|
{
|
|
scsi_unblock_requests(ahd->platform_data->host);
|
|
}
|
|
|
|
static int
|
|
ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
|
|
{
|
|
struct ahd_softc *ahd;
|
|
struct ahd_linux_device *dev;
|
|
struct scb *pending_scb;
|
|
u_int saved_scbptr;
|
|
u_int active_scbptr;
|
|
u_int last_phase;
|
|
u_int saved_scsiid;
|
|
u_int cdb_byte;
|
|
int retval;
|
|
int was_paused;
|
|
int paused;
|
|
int wait;
|
|
int disconnected;
|
|
ahd_mode_state saved_modes;
|
|
unsigned long flags;
|
|
|
|
pending_scb = NULL;
|
|
paused = FALSE;
|
|
wait = FALSE;
|
|
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
|
|
|
|
scmd_printk(KERN_INFO, cmd,
|
|
"Attempting to queue an ABORT message:");
|
|
|
|
printf("CDB:");
|
|
for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
|
|
printf(" 0x%x", cmd->cmnd[cdb_byte]);
|
|
printf("\n");
|
|
|
|
ahd_lock(ahd, &flags);
|
|
|
|
/*
|
|
* First determine if we currently own this command.
|
|
* Start by searching the device queue. If not found
|
|
* there, check the pending_scb list. If not found
|
|
* at all, and the system wanted us to just abort the
|
|
* command, return success.
|
|
*/
|
|
dev = scsi_transport_device_data(cmd->device);
|
|
|
|
if (dev == NULL) {
|
|
/*
|
|
* No target device for this command exists,
|
|
* so we must not still own the command.
|
|
*/
|
|
scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
|
|
retval = SUCCESS;
|
|
goto no_cmd;
|
|
}
|
|
|
|
/*
|
|
* See if we can find a matching cmd in the pending list.
|
|
*/
|
|
LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
|
|
if (pending_scb->io_ctx == cmd)
|
|
break;
|
|
}
|
|
|
|
if (pending_scb == NULL) {
|
|
scmd_printk(KERN_INFO, cmd, "Command not found\n");
|
|
goto no_cmd;
|
|
}
|
|
|
|
if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
|
|
/*
|
|
* We can't queue two recovery actions using the same SCB
|
|
*/
|
|
retval = FAILED;
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* Ensure that the card doesn't do anything
|
|
* behind our back. Also make sure that we
|
|
* didn't "just" miss an interrupt that would
|
|
* affect this cmd.
|
|
*/
|
|
was_paused = ahd_is_paused(ahd);
|
|
ahd_pause_and_flushwork(ahd);
|
|
paused = TRUE;
|
|
|
|
if ((pending_scb->flags & SCB_ACTIVE) == 0) {
|
|
scmd_printk(KERN_INFO, cmd, "Command already completed\n");
|
|
goto no_cmd;
|
|
}
|
|
|
|
printf("%s: At time of recovery, card was %spaused\n",
|
|
ahd_name(ahd), was_paused ? "" : "not ");
|
|
ahd_dump_card_state(ahd);
|
|
|
|
disconnected = TRUE;
|
|
if (ahd_search_qinfifo(ahd, cmd->device->id,
|
|
cmd->device->channel + 'A',
|
|
cmd->device->lun,
|
|
pending_scb->hscb->tag,
|
|
ROLE_INITIATOR, CAM_REQ_ABORTED,
|
|
SEARCH_COMPLETE) > 0) {
|
|
printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
|
|
ahd_name(ahd), cmd->device->channel,
|
|
cmd->device->id, cmd->device->lun);
|
|
retval = SUCCESS;
|
|
goto done;
|
|
}
|
|
|
|
saved_modes = ahd_save_modes(ahd);
|
|
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
|
|
last_phase = ahd_inb(ahd, LASTPHASE);
|
|
saved_scbptr = ahd_get_scbptr(ahd);
|
|
active_scbptr = saved_scbptr;
|
|
if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
|
|
struct scb *bus_scb;
|
|
|
|
bus_scb = ahd_lookup_scb(ahd, active_scbptr);
|
|
if (bus_scb == pending_scb)
|
|
disconnected = FALSE;
|
|
}
|
|
|
|
/*
|
|
* At this point, pending_scb is the scb associated with the
|
|
* passed in command. That command is currently active on the
|
|
* bus or is in the disconnected state.
|
|
*/
|
|
saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
|
|
if (last_phase != P_BUSFREE
|
|
&& SCB_GET_TAG(pending_scb) == active_scbptr) {
|
|
|
|
/*
|
|
* We're active on the bus, so assert ATN
|
|
* and hope that the target responds.
|
|
*/
|
|
pending_scb = ahd_lookup_scb(ahd, active_scbptr);
|
|
pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
|
|
ahd_outb(ahd, MSG_OUT, HOST_MSG);
|
|
ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
|
|
scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
|
|
wait = TRUE;
|
|
} else if (disconnected) {
|
|
|
|
/*
|
|
* Actually re-queue this SCB in an attempt
|
|
* to select the device before it reconnects.
|
|
*/
|
|
pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
|
|
ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
|
|
pending_scb->hscb->cdb_len = 0;
|
|
pending_scb->hscb->task_attribute = 0;
|
|
pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
|
|
|
|
if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
|
|
/*
|
|
* Mark the SCB has having an outstanding
|
|
* task management function. Should the command
|
|
* complete normally before the task management
|
|
* function can be sent, the host will be notified
|
|
* to abort our requeued SCB.
|
|
*/
|
|
ahd_outb(ahd, SCB_TASK_MANAGEMENT,
|
|
pending_scb->hscb->task_management);
|
|
} else {
|
|
/*
|
|
* If non-packetized, set the MK_MESSAGE control
|
|
* bit indicating that we desire to send a message.
|
|
* We also set the disconnected flag since there is
|
|
* no guarantee that our SCB control byte matches
|
|
* the version on the card. We don't want the
|
|
* sequencer to abort the command thinking an
|
|
* unsolicited reselection occurred.
|
|
*/
|
|
pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
|
|
|
|
/*
|
|
* The sequencer will never re-reference the
|
|
* in-core SCB. To make sure we are notified
|
|
* during reslection, set the MK_MESSAGE flag in
|
|
* the card's copy of the SCB.
|
|
*/
|
|
ahd_outb(ahd, SCB_CONTROL,
|
|
ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
|
|
}
|
|
|
|
/*
|
|
* Clear out any entries in the QINFIFO first
|
|
* so we are the next SCB for this target
|
|
* to run.
|
|
*/
|
|
ahd_search_qinfifo(ahd, cmd->device->id,
|
|
cmd->device->channel + 'A', cmd->device->lun,
|
|
SCB_LIST_NULL, ROLE_INITIATOR,
|
|
CAM_REQUEUE_REQ, SEARCH_COMPLETE);
|
|
ahd_qinfifo_requeue_tail(ahd, pending_scb);
|
|
ahd_set_scbptr(ahd, saved_scbptr);
|
|
ahd_print_path(ahd, pending_scb);
|
|
printf("Device is disconnected, re-queuing SCB\n");
|
|
wait = TRUE;
|
|
} else {
|
|
scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
|
|
retval = FAILED;
|
|
goto done;
|
|
}
|
|
|
|
no_cmd:
|
|
/*
|
|
* Our assumption is that if we don't have the command, no
|
|
* recovery action was required, so we return success. Again,
|
|
* the semantics of the mid-layer recovery engine are not
|
|
* well defined, so this may change in time.
|
|
*/
|
|
retval = SUCCESS;
|
|
done:
|
|
if (paused)
|
|
ahd_unpause(ahd);
|
|
if (wait) {
|
|
DECLARE_COMPLETION_ONSTACK(done);
|
|
|
|
ahd->platform_data->eh_done = &done;
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
printf("%s: Recovery code sleeping\n", ahd_name(ahd));
|
|
if (!wait_for_completion_timeout(&done, 5 * HZ)) {
|
|
ahd_lock(ahd, &flags);
|
|
ahd->platform_data->eh_done = NULL;
|
|
ahd_unlock(ahd, &flags);
|
|
printf("%s: Timer Expired (active %d)\n",
|
|
ahd_name(ahd), dev->active);
|
|
retval = FAILED;
|
|
}
|
|
printf("Recovery code awake\n");
|
|
} else
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
if (retval != SUCCESS)
|
|
printf("%s: Command abort returning 0x%x\n",
|
|
ahd_name(ahd), retval);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void ahd_linux_set_width(struct scsi_target *starget, int width)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned long flags;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_period(struct scsi_target *starget, int period)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options;
|
|
unsigned int dt;
|
|
unsigned long flags;
|
|
unsigned long offset = tinfo->goal.offset;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: set period to %d\n", ahd_name(ahd), period);
|
|
#endif
|
|
if (offset == 0)
|
|
offset = MAX_OFFSET;
|
|
|
|
if (period < 8)
|
|
period = 8;
|
|
if (period < 10) {
|
|
if (spi_max_width(starget)) {
|
|
ppr_options |= MSG_EXT_PPR_DT_REQ;
|
|
if (period == 8)
|
|
ppr_options |= MSG_EXT_PPR_IU_REQ;
|
|
} else
|
|
period = 10;
|
|
}
|
|
|
|
dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
|
|
/* all PPR requests apart from QAS require wide transfers */
|
|
if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
|
|
if (spi_width(starget) == 0)
|
|
ppr_options &= MSG_EXT_PPR_QAS_REQ;
|
|
}
|
|
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = 0;
|
|
unsigned int period = 0;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: set offset to %d\n", ahd_name(ahd), offset);
|
|
#endif
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
if (offset != 0) {
|
|
period = tinfo->goal.period;
|
|
ppr_options = tinfo->goal.ppr_options;
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
}
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
|
|
AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_DT_REQ;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int width = tinfo->goal.width;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s DT\n", ahd_name(ahd),
|
|
dt ? "enabling" : "disabling");
|
|
#endif
|
|
if (dt && spi_max_width(starget)) {
|
|
ppr_options |= MSG_EXT_PPR_DT_REQ;
|
|
if (!width)
|
|
ahd_linux_set_width(starget, 1);
|
|
} else {
|
|
if (period <= 9)
|
|
period = 10; /* If resetting DT, period must be >= 25ns */
|
|
/* IU is invalid without DT set */
|
|
ppr_options &= ~MSG_EXT_PPR_IU_REQ;
|
|
}
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_QAS_REQ;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s QAS\n", ahd_name(ahd),
|
|
qas ? "enabling" : "disabling");
|
|
#endif
|
|
|
|
if (qas) {
|
|
ppr_options |= MSG_EXT_PPR_QAS_REQ;
|
|
}
|
|
|
|
dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_IU_REQ;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s IU\n", ahd_name(ahd),
|
|
iu ? "enabling" : "disabling");
|
|
#endif
|
|
|
|
if (iu && spi_max_width(starget)) {
|
|
ppr_options |= MSG_EXT_PPR_IU_REQ;
|
|
ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
|
|
}
|
|
|
|
dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_RD_STRM;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s Read Streaming\n", ahd_name(ahd),
|
|
rdstrm ? "enabling" : "disabling");
|
|
#endif
|
|
|
|
if (rdstrm && spi_max_width(starget))
|
|
ppr_options |= MSG_EXT_PPR_RD_STRM;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_WR_FLOW;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s Write Flow Control\n", ahd_name(ahd),
|
|
wrflow ? "enabling" : "disabling");
|
|
#endif
|
|
|
|
if (wrflow && spi_max_width(starget))
|
|
ppr_options |= MSG_EXT_PPR_WR_FLOW;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_RTI;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
if ((ahd->features & AHD_RTI) == 0) {
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: RTI not available\n", ahd_name(ahd));
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s RTI\n", ahd_name(ahd),
|
|
rti ? "enabling" : "disabling");
|
|
#endif
|
|
|
|
if (rti && spi_max_width(starget))
|
|
ppr_options |= MSG_EXT_PPR_RTI;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_PCOMP_EN;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
#ifdef AHD_DEBUG
|
|
if ((ahd_debug & AHD_SHOW_DV) != 0)
|
|
printf("%s: %s Precompensation\n", ahd_name(ahd),
|
|
pcomp ? "Enable" : "Disable");
|
|
#endif
|
|
|
|
if (pcomp && spi_max_width(starget)) {
|
|
uint8_t precomp;
|
|
|
|
if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
|
|
struct ahd_linux_iocell_opts *iocell_opts;
|
|
|
|
iocell_opts = &aic79xx_iocell_info[ahd->unit];
|
|
precomp = iocell_opts->precomp;
|
|
} else {
|
|
precomp = AIC79XX_DEFAULT_PRECOMP;
|
|
}
|
|
ppr_options |= MSG_EXT_PPR_PCOMP_EN;
|
|
AHD_SET_PRECOMP(ahd, precomp);
|
|
} else {
|
|
AHD_SET_PRECOMP(ahd, 0);
|
|
}
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
|
|
struct ahd_tmode_tstate *tstate;
|
|
struct ahd_initiator_tinfo *tinfo
|
|
= ahd_fetch_transinfo(ahd,
|
|
starget->channel + 'A',
|
|
shost->this_id, starget->id, &tstate);
|
|
struct ahd_devinfo devinfo;
|
|
unsigned int ppr_options = tinfo->goal.ppr_options
|
|
& ~MSG_EXT_PPR_HOLD_MCS;
|
|
unsigned int period = tinfo->goal.period;
|
|
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
|
|
unsigned long flags;
|
|
|
|
if (hold && spi_max_width(starget))
|
|
ppr_options |= MSG_EXT_PPR_HOLD_MCS;
|
|
|
|
ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
|
|
starget->channel + 'A', ROLE_INITIATOR);
|
|
ahd_find_syncrate(ahd, &period, &ppr_options,
|
|
dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
|
|
ppr_options, AHD_TRANS_GOAL, FALSE);
|
|
ahd_unlock(ahd, &flags);
|
|
}
|
|
|
|
static void ahd_linux_get_signalling(struct Scsi_Host *shost)
|
|
{
|
|
struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
|
|
unsigned long flags;
|
|
u8 mode;
|
|
|
|
ahd_lock(ahd, &flags);
|
|
ahd_pause(ahd);
|
|
mode = ahd_inb(ahd, SBLKCTL);
|
|
ahd_unpause(ahd);
|
|
ahd_unlock(ahd, &flags);
|
|
|
|
if (mode & ENAB40)
|
|
spi_signalling(shost) = SPI_SIGNAL_LVD;
|
|
else if (mode & ENAB20)
|
|
spi_signalling(shost) = SPI_SIGNAL_SE;
|
|
else
|
|
spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
|
|
}
|
|
|
|
static struct spi_function_template ahd_linux_transport_functions = {
|
|
.set_offset = ahd_linux_set_offset,
|
|
.show_offset = 1,
|
|
.set_period = ahd_linux_set_period,
|
|
.show_period = 1,
|
|
.set_width = ahd_linux_set_width,
|
|
.show_width = 1,
|
|
.set_dt = ahd_linux_set_dt,
|
|
.show_dt = 1,
|
|
.set_iu = ahd_linux_set_iu,
|
|
.show_iu = 1,
|
|
.set_qas = ahd_linux_set_qas,
|
|
.show_qas = 1,
|
|
.set_rd_strm = ahd_linux_set_rd_strm,
|
|
.show_rd_strm = 1,
|
|
.set_wr_flow = ahd_linux_set_wr_flow,
|
|
.show_wr_flow = 1,
|
|
.set_rti = ahd_linux_set_rti,
|
|
.show_rti = 1,
|
|
.set_pcomp_en = ahd_linux_set_pcomp_en,
|
|
.show_pcomp_en = 1,
|
|
.set_hold_mcs = ahd_linux_set_hold_mcs,
|
|
.show_hold_mcs = 1,
|
|
.get_signalling = ahd_linux_get_signalling,
|
|
};
|
|
|
|
static int __init
|
|
ahd_linux_init(void)
|
|
{
|
|
int error = 0;
|
|
|
|
/*
|
|
* If we've been passed any parameters, process them now.
|
|
*/
|
|
if (aic79xx)
|
|
aic79xx_setup(aic79xx);
|
|
|
|
ahd_linux_transport_template =
|
|
spi_attach_transport(&ahd_linux_transport_functions);
|
|
if (!ahd_linux_transport_template)
|
|
return -ENODEV;
|
|
|
|
scsi_transport_reserve_device(ahd_linux_transport_template,
|
|
sizeof(struct ahd_linux_device));
|
|
|
|
error = ahd_linux_pci_init();
|
|
if (error)
|
|
spi_release_transport(ahd_linux_transport_template);
|
|
return error;
|
|
}
|
|
|
|
static void __exit
|
|
ahd_linux_exit(void)
|
|
{
|
|
ahd_linux_pci_exit();
|
|
spi_release_transport(ahd_linux_transport_template);
|
|
}
|
|
|
|
module_init(ahd_linux_init);
|
|
module_exit(ahd_linux_exit);
|