Commit Graph

433 Commits

Author SHA1 Message Date
James Bottomley b21a413851 [SCSI] add global timeout to the scsi mid-layer
There are certain rogue devices (and the aic7xxx driver) that return
BUSY or QUEUE_FULL forever.  This code will apply a global timeout (of
the total number of retries times the per command timer) to a given
command.  If it is exceeded, the command is completed regardless of its
state.

The patch also removes the unused field in the command: timeout and
timeout_total.

This solves the problem of detecting an endless loop in the mid-layer
because of BUSY/QUEUE_FULL bouncing, but will not recover the device.
In the aic7xxx case, the driver can be recovered by sending a bus reset,
so possibly this should be tied into the error handler?

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-08 09:55:39 -05:00
Alex Aizman 39e84790d3 [SCSI] open-iscsi/linux-iscsi-5 Initiator: Header files
open-iscsi-headers.patch - common header files:
	- iscsi_if.h (user/kernel #defines and user/kernel events);
	- iscsi_proto.h (RFC3720 #defines and types);
	- scsi_transport_iscsi.h (transport API, transport #defines and types).

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-06 09:33:41 -05:00
James Bottomley d872ebe454 [SCSI] add missing hold_mcs parameter to the spi transport class
This parameter is important only to people who take the time to tune the
margin control settings, otherwise it's completely irrelevant.  However,
just in case anyone should want to do this, it's appropriate to include
the parameter.

I don't do anything with it in DV by design, so the parameter will come
up as off by default, so if anyone actually wants to play with the
margin control settings they'll have to enable it under the
spi_transport class first.

I also updated the transfer settings display to report all of the PPR
settings instead of only DT, IU and QAS

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-03 15:54:55 -05:00
James Bottomley 47ba39eead [SCSI] add template for scsi_host_set_state()
Fixes up some warnings in the tree.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-30 11:39:53 -05:00
Mike Anderson 82f29467a0 [SCSI] host state model update: mediate host add/remove race
Add support to not allow additions to a host when it is being removed.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-30 11:13:01 -05:00
Mike Anderson d330187408 [SCSI] host state model update: replace old host bitmap state
Migrate the current SCSI host state model to a model like SCSI
device is using.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>

Rejections fixed up and

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-30 11:10:24 -05:00
James Bottomley e10fb91c4d [SCSI] fix function prototype warning
int_to_scsilun() takes a pointer to a struct scsi_lun in it's
prototype, so add this structure to scsi_device.h to avoid declaration
inside function prototype warnings.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-14 11:54:17 -05:00
James.Smart@Emulex.Com 2f4701d827 [SCSI] add int_to_scsilun() function
One of the issues we had was reverting the midlayers lun value
into the 8byte lun value that we wanted to send to the device.
Historically, there's been some combination of byte swapping,
setting high/low, etc. There's also been no common thread between
how our driver did it and others.  I also got very confused as
to why byteswap routines were being used.

Anyway, this patch is a LLDD-callable function that reverts the
midlayer's lun value, stored in an int, to the 8-byte quantity
(note: this is not the real 8byte quantity, just the same amount
that scsilun_to_int() was able to convert and store originally).

This also solves the dilemma of the thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=112116767118981&w=2

A patch for the lpfc driver to use this function will be along
in a few days (batched with other patches).

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-14 11:21:27 -04:00
James Bottomley 7f602c5393 [SCSI] add TYPE_RBC to our type table
Here's a tiny update that means we print the correct ASCII type
information

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-07-11 12:38:33 -05:00
Christoph Hellwig 8d115f845a [SCSI] remove scsi_cmnd->state
We never look at it except for the old megaraid driver that abuses it
for sending internal commands.  That usage can be fixed easily because
those internal commands are single-threaded by a mutex and we can easily
use a completion there.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-26 12:16:24 -05:00
Christoph Hellwig b4edcbcafd [SCSI] remove scsi_cmnd->owner
never checked anywhere

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-26 12:15:28 -05:00
Christoph Hellwig f5ad56145d [SCSI] remove scsi_cmnd->abort_reason
Never used for anything but printing it out in debug routines.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-26 12:14:46 -05:00
Christoph Hellwig a4c8f62851 [SCSI] remove scsi_cmnd.eh_state
it's never set to anything, and just three broken drivers are looking
at it and doing odd things.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-26 12:14:10 -05:00
Christoph Hellwig 12413197ee [SCSI] remove scsi_set_device
scsi_add_host is the proper place to set the device, but people copy
the scsi_set_device usage from older drivers again and again.

note that this leaves some legacy drivers like qlogicisp/qlogicfc
without pci association in sysfs, but they're scheduled to go away soon
anyway.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-26 08:31:47 -05:00
Markus Lidel b2aaee33fb [PATCH] I2O: Adaptec specific SG_IO access, firmware access through sysfs and 2400A workaround
Changes:
 - Provide SG_IO access to BLOCK and EXECUTIVE class on Adaptec
   controllers
 - Use PRIVATE messages in SCSI-OSM because on some controllers normal
   SCSI class commands like READ or READ CAPACITY cause errors
 - Use new DMA and SG list creation function
 - Added workaround to limit sectors per request for Adaptec 2400A
   controllers

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-24 00:05:28 -07:00
Jeff Garzik 80bd6d7f5e Merge /spare/repo/linux-2.6/ 2005-06-22 13:10:49 -04:00
James Bottomley 153b1e1fd9 Automatic merge of ../scsi-misc-2.6-old/ 2005-05-26 14:14:55 -04:00
James Bottomley c3e9dda4f5 [SCSI] allow the HBA to reserve target and device private areas
This patch basically allows any HBA attached to the SPI transport class
to declare an extra area which the mid-layer will allocate as part of
its device and target allocations.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-05-26 11:49:20 -04:00
James Bottomley a283bd37d0 [SCSI] Add target alloc/destroy callbacks to the host template
This gives the HBA driver notice when a target is created and
destroyed to allow it to manage its own target based allocations
accordingly.

This is a much reduced verson of the original patch sent in by
James.Smart@Emulex.com

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-05-26 11:27:53 -04:00
Al Viro 631e8a1398 [SCSI] TYPE_RBC cache fixes (sbp2.c affected)
a) TYPE_SDAD renamed to TYPE_RBC and taken to scsi.h
	b) in sbp2.c remapping of TYPE_RPB to TYPE_DISK turned off
	c) relevant places in midlayer and sd.c taught to accept TYPE_RBC
	d) sd.c::sd_read_cache_type() looks into page 6 when dealing with
TYPE_RBC - these guys have writeback cache flag there and are not guaranteed
to have page 8 at all.
	e) sd_read_cache_type() got an extra sanity check - it checks that
it got the page it asked for before using its contents.  And screams if
mismatch had happened.  Rationale: there are broken devices out there that
are "helpful" enough to go for "I don't have a page you've asked for, here,
have another one".  For example, PL3507 had been caught doing just that...
	f) sbp2 sets sdev->use_10_for_rw and sdev->use_10_for_ms instead
of bothering to remap READ6/WRITE6/MOD_SENSE, so most of the conversions
in there are gone now.

	Incidentally, I wonder if USB storage devices that have no
mode page 8 are simply RBC ones.  I haven't touched that, but it might
be interesting to check...

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-05-26 08:41:15 -05:00
949d33e70f Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git branch HEAD 2005-05-26 01:47:10 -04:00
James Bottomley 62a8612972 [SCSI] implement parameter limits in the SPI transport class
There's a basic need not to have parameters go under or over certain
values when doing domain validation.  The basic ones are

max_offset, max_width and min_period

This patch makes the transport class take and enforce these three
limits.  Currently they can be set by the user, although they could
obviously be read from the HBA's on-board NVRAM area during
slave_configure (if it has one).

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-05-20 15:54:32 -05:00
Gerd Knorr daa6eda65a [SCSI] add scsi changer driver
This patch adds a device driver for scsi media changer devices.

Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-05-20 12:53:50 -05:00
Jeff Garzik b095518ef5 [libata] ATA passthru (arbitrary ATA command execution)
Authors:
Brett Russ <russb@emc.com>
John W. Linville <linville@tuxdriver.com>
Andy Warner <andyw@pobox.com>
2005-05-12 15:45:22 -04:00
James Bottomley c46f2ffb9e merge by hand (scsi_device.h) 2005-04-18 13:45:00 -05:00
06f81ea8ca [PATCH] scsi: remove volatile from scsi data
This patch removes volatile qualifier from scsi_device->device_busy,
Scsi_Host->host_busy and ->host_failed as the volatile qualifiers
don't serve any purpose now.  While at it, convert those fields from
unsigned short to unsigned int as suggested by Christoph.


Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18 12:35:31 -05:00
bf341919db scsi: add DID_REQUEUE to the error handling
We have a DID_IMM_RETRY to require a retry at once, but we could do with
a DID_REQUEUE to instruct the mid-layer to treat this command in the
same manner as QUEUE_FULL or BUSY (i.e. halt the submission until
another command returns ... or the queue pressure builds if there are no
outstanding commands).

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18 12:35:06 -05:00
c6295cdf65 [PATCH] scsi: remove meaningless scsi_cmnd->serial_number_at_timeout field
scsi_cmnd->serial_number_at_timeout doesn't serve any purpose
anymore.  All serial_number == serial_number_at_timeout tests
are always true in abort callbacks.  Kill the field.  Also, as
->pid always equals ->serial_number and ->serial_number
doesn't have any special meaning anymore, update comments
above ->serial_number accordingly.  Once we remove all uses of
this field from all lldd's, this field should go.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18 12:33:15 -05:00
d3a933dc98 [PATCH] scsi: remove unused scsi_cmnd->internal_timeout field
scsi_cmnd->internal_timeout field doesn't have any meaning
anymore.  Kill the field.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18 12:32:47 -05:00
b6651129cc [PATCH] consolidate timeout defintions in scsi.h
Adapted from a patch in SuSE's kernel SRPM.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18 12:31:52 -05:00
c2a9331c62 updates for CFQ oops fix
- add a comment to the device structure that the device_busy field
  is now protected by the request_queue->queue_lock
- null out sdev->request_queue after the queue is released to trap
  any (and there shouldn't be any) use after the queue is freed.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-16 20:10:34 -05:00
152587deb8 [PATCH] fix NMI lockup with CFQ scheduler
The current problem seen is that the queue lock is actually in the
SCSI device structure, so when that structure is freed on device
release, we go boom if the queue tries to access the lock again.

The fix here is to move the lock from the scsi_device to the queue.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-16 20:10:09 -05:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00