Commit graph

16 commits

Author SHA1 Message Date
malahal@us.ibm.com
3f048109d9 [SCSI] aic94xx SCSI timeout fix
The patch updates DDB0 in the aic94xx driver itself. It doesn't supply
or use lldd_port_formed field. DDB0 is updated prior to posting
notification to libsas layer.

Signed-off-by: Malahal Naineni <malahal@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-11-09 14:27:48 +09:00
Sergey Kononenko
3fc2aef522 [SCSI] aic94xx: Supermicro motherboards support
Add PCI id. Plus correct for possibly missing resistor that can cause
FLASHEX to have the wrong value.

Signed-off-by: Sergey Kononenko <sergk@sergk.org.ua>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-25 15:13:27 -07:00
David Howells
7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Linus Torvalds
97d41e90fe Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (54 commits)
  [SCSI] Initial Commit of qla4xxx
  [SCSI] raid class: handle component-add errors
  [SCSI] SCSI megaraid_sas: handle thrown errors
  [SCSI] SCSI aic94xx: handle sysfs errors
  [SCSI] SCSI st: fix error handling in module init, sysfs
  [SCSI] SCSI sd: fix module init/exit error handling
  [SCSI] SCSI osst: add error handling to module init, sysfs
  [SCSI] scsi: remove hosts.h
  [SCSI] scsi: Scsi_Cmnd convertion in aic7xxx_old.c
  [SCSI] megaraid_sas: sets ioctl timeout and updates version,changelog
  [SCSI] megaraid_sas: adds tasklet for cmd completion
  [SCSI] megaraid_sas: prints pending cmds before setting hw_crit_error
  [SCSI] megaraid_sas: function pointer for disable interrupt
  [SCSI] megaraid_sas: frame count optimization
  [SCSI] megaraid_sas: FW transition and q size changes
  [SCSI] qla2xxx: Update version number to 8.01.07-k2.
  [SCSI] qla2xxx: Stall mid-layer error handlers while rport is blocked.
  [SCSI] qla2xxx: Add MODULE_FIRMWARE tags.
  [SCSI] qla2xxx: Add support for host port state FC transport attribute.
  [SCSI] qla2xxx: Add support for fabric name FC transport attribute.
  ...
2006-10-04 18:57:35 -07:00
Jeff Garzik
bb0766204c [SCSI] SCSI aic94xx: handle sysfs errors
Handle and unwind from errors returned by driver model functions.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04 13:17:47 -05:00
Dave Jones
038b0a6d8d Remove all inclusions of <linux/config.h>
kbuild explicitly includes this at build time.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-04 03:38:54 -04:00
Muli Ben-Yehuda
bc54ec6b07 [SCSI] aic94xx: require firmware loader
aic94xx relies on external firmware and thus requires FW_LOADER.

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-26 09:23:15 -07:00
Al Viro
355edd2e39 [PATCH] fix idiocy in asd_init_lseq_mdp()
To whoever had written that code:

 a) priority of >> is higher than that of &
 b) priority of typecast is higher than that of any binary operator
 c) learn the fscking C

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-24 20:07:49 -07:00
Al Viro
3cc27547d6 [PATCH] SCSI gfp_t annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-24 20:07:49 -07:00
malahal@us.ibm.com
10d19ae5e1 [SCSI] aic94xx: Fix for a typo in aic94xx_init()
Signed-off-by: Malahal Naineni <malahal@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23 11:47:29 -05:00
Alexis Bruemmer
f2d719c65a [SCSI] aic94xx: Removes Reliance on FLASH Manufacture IDs
This patch removes the reliance on FLASH Manufacture IDs for validation.

Signed-off-by: Alexis Bruemmer <alexisb@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23 11:47:00 -05:00
James Bottomley
a01e70e570 [SCSI] aci94xx: implement link rate setting
This patch implements the ability to set the minimum and maximum
linkrates for both libsas (for expanders) and aic94xx (for the host
phys).  It also tidies up the setting of the hardware min and max to
make sure they're updated when the expander emits a change broadcast.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-07 15:20:23 -05:00
James Bottomley
88edf74610 [SCSI] SAS: consolidate linkspeed definitions
At the moment we have two separate linkspeed enumerations covering
roughly the same values.  This patch consolidates on a single one enum
sas_linkspeed in scsi_transport_sas.h and uses it everywhere in the
aic94xx driver.  Eventually I'll get around to removing the duplicated
fields in asd_sas_phy and sas_phy ...

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-07 12:41:16 -05:00
Darrick J. Wong
f19eaa7f53 [SCSI] aic94xx: Increase can_queue for better performance
This patch sets can_queue in the aic94xx driver's scsi_host to better
performing values than what's there currently.  It seems that
asd_ha->seq.can_queue reflects the number of requests that can be
queued per controller; so long as there's one scsi_host per
controller, it seems logical that the scsi_host ought to have the same
can_queue value.  To the best of my (still limited) knowledge, this
method provides the correct value.

The effect of leaving this value set to 1 is terrible performance in
the case of either (a) certain Maxtor SAS drives flying solo or (b)
flooding several disks with I/O simultaneously (md-raid).  There may be
more scenarios where we see similar problems that I haven't uncovered.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-30 17:30:06 -04:00
James Bottomley
bc229b3663 [SCSI] aic94xx: add MODULE_FIRMWARE tag
Add a tag which shows what the firmware file we're requesting is.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-30 11:04:17 -04:00
James Bottomley
2908d778ab [SCSI] aic94xx: new driver
This is the end point of the separate aic94xx driver based on the
original driver and transport class from Luben Tuikov
<ltuikov@yahoo.com>

The log of the separate development is:

Alexis Bruemmer:
  o aic94xx: fix hotplug/unplug for expanderless systems
  o aic94xx: disable split completion timer/setting by default
  o aic94xx: wide port off expander support
  o aic94xx: remove various inline functions
  o aic94xx: use bitops
  o aic94xx: remove queue comment
  o aic94xx: remove sas_common.c
  o aic94xx: sas remove depot's
  o aic94xx: use available list_for_each_entry_safe_reverse()
  o aic94xx: sas header file merge

James Bottomley:
  o aic94xx: fix TF_TMF_NO_CTX processing
  o aic94xx: convert to request_firmware interface
  o aic94xx: fix hotplug/unplug
  o aic94xx: add link error counts to the expander phys
  o aic94xx: add transport class phy reset capability
  o aic94xx: remove local_attached flag
  o Remove README
  o Fixup Makefile variable for libsas rename
  o Rename sas->libsas
  o aic94xx: correct return code for sas_discover_event
  o aic94xx: use parent backlink port
  o aic94xx: remove channel abstraction
  o aic94xx: fix routing algorithms
  o aic94xx: add backlink port
  o aic94xx: fix cascaded expander properties
  o aic94xx: fix sleep under lock
  o aic94xx: fix panic on module removal in complex topology
  o aic94xx: make use of the new sas_port
  o rename sas_port to asd_sas_port
  o Fix for eh_strategy_handler move
  o aic94xx: move entirely over to correct transport class formulation
  o remove last vestages of sas_rphy_alloc()
  o update for eh_timed_out move
  o Preliminary expander support for aic94xx
  o sas: remove event thread
  o minor warning cleanups
  o remove last vestiges of id mapping arrays
  o Further updates
  o Convert aic94xx over entirely to the transport class end device and
  o update aic94xx/sas to use the new sas transport class end device
  o [PATCH] aic94xx: attaching to the sas transport class
  o Add missing completion removal from prior patch
  o [PATCH] aic94xx: attaching to the sas transport class
  o Build fixes from akpm

Jeff Garzik:
  o [scsi aic94xx] Remove ->owner from PCI info table

Luben Tuikov:
  o initial aic94xx driver

Mike Anderson:
  o aic94xx: fix panic on module insertion
  o aic94xx: stub out SATA_DEV case
  o aic94xx: compile warning cleanups
  o aic94xx: sas_alloc_task
  o aic94xx: ref count update
  o aic94xx nexus loss time value
  o [PATCH] aic94xx: driver assertion in non-x86 BIOS env

Randy Dunlap:
  o libsas: externs not needed

Robert Tarte:
  o aic94xx: sequence patch - fixes SATA support

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-29 09:52:29 -05:00