| e58b0d902f7c7c407bae9c8bc8d90fa1d06184c5 |
|
27-Dec-2011 |
Steffen Maier <maier@linux.vnet.ibm.com> |
[S390] qdio: fix kernel panic for zfcp 31-bit
The queue_start_poll function pointer field in struct qdio_initialize
had to change its type and become a vector of function pointers to
support asynchronous delivery of storage blocks so rename the field to
make the type change explicit and ensure no other user of qdio tries
to use the field the old way. During setting up the qdio queues, only
dereference vector elements if the vector is actually allocated.
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 400d829153aea9487654f588d4d06e8beb8b251f |
|
27-Dec-2011 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
[S390] qdio: fix qdio_allocate_aob() declaration
drivers/s390/cio/qdio_setup.c:24:32:
warning: non-ANSI function declaration of function 'qdio_allocate_aob'
While at it also simplify the function.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 3a4c5d5964ed43a5524f6d289fb4cd37d39f3f1a |
|
30-Jul-2011 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
s390: add missing module.h/export.h includes
Fix several compile errors on s390 caused by splitting module.h.
Some include additions [e.g. qdio_setup.c, zfcp_qdio.c] are in
anticipation of pending changes queued for s390 that increase
the modular use footprint.
[PG: added additional obvious changes since Heiko's original patch]
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
/drivers/s390/cio/qdio_setup.c
|
| ec7ae517537ae5c7b0b2cd7f562dfa3e7a05b954 |
|
29-Oct-2011 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits)
[SCSI] qla4xxx: export address/port of connection (fix udev disk names)
[SCSI] ipr: Fix BUG on adapter dump timeout
[SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
[SCSI] hpsa: change confusing message to be more clear
[SCSI] iscsi class: fix vlan configuration
[SCSI] qla4xxx: fix data alignment and use nl helpers
[SCSI] iscsi class: fix link local mispelling
[SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA
[SCSI] aacraid: use lower snprintf() limit
[SCSI] lpfc 8.3.27: Change driver version to 8.3.27
[SCSI] lpfc 8.3.27: T10 additions for SLI4
[SCSI] lpfc 8.3.27: Fix queue allocation failure recovery
[SCSI] lpfc 8.3.27: Change algorithm for getting physical port name
[SCSI] lpfc 8.3.27: Changed worst case mailbox timeout
[SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes
[SCSI] megaraid_sas: Changelog and version update
[SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic
[SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support
[SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers
[SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts
...
|
| dfe5bb506172307e43287b8962348fb85801c0f4 |
|
15-Aug-2011 |
Swen Schillig <swen@vnet.ibm.com> |
[SCSI] qdio: base support for hardware data router with zfcp
FICON Express8S supports hardware data router, which requires an
adapted qdio request format.
This part 1/2 provides the qdio base required for exploitation in
zfcp.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
/drivers/s390/cio/qdio_setup.c
|
| 104ea556ee7f40039c9c635d0c267b1fde084a81 |
|
08-Aug-2011 |
frank.blaschka@de.ibm.com <frank.blaschka@de.ibm.com> |
qdio: support asynchronous delivery of storage blocks
This patch introduces support for asynchronous delivery of storage blocks for
Hipersockets. Upper layers may exploit this functionality to reuse SBALs for
which the delivery status is still pending.
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
/drivers/s390/cio/qdio_setup.c
|
| 90adac58d1a4daf3560739ff5b76497d5ece16c4 |
|
05-Jan-2011 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: cleanup SIGA sync
Simplify the SIGA sync code and add unlikely annotations. In polling mode
SBALs may be accessed without interrupt, so call SIGA sync before every scan.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 3d6c76ff32bb9b2ebf6e859855d315eb42e3df50 |
|
05-Jan-2011 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: outbound tasklet scan threshold
Introduce a scan treshold for the qdio outbound queues. By setting the
threshold the driver can tell qdio after how much used SBALs qdio
should schedule the outbound tasklet that scans the queue for finished
SBALs. The threshold is specific by the drivers because a
Hipersockets device is much faster in utilizing outbound buffers than a
ZFCP or OSA device.
The default values after how many used SBALs the tasklet should run are:
OSA: > 31 SBALs
Hipersockets: > 7 SBALs
zfcp: > 55 SBALs
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| d36deae75011a7890f0e730dd0f867c64081cb50 |
|
07-Sep-2010 |
Jan Glauber <jang@linux.vnet.ibm.com> |
qdio: extend API to allow polling
Extend the qdio API to allow polling in the upper-layer driver. This
is needed by qeth to use NAPI.
To use the new interface the upper-layer driver must specify the
queue_start_poll(). This callback is used to signal the upper-layer
driver that is has initiative and must process the inbound queue by
calling qdio_get_next_buffers(). If the upper-layer driver wants to
stop polling it calls qdio_start_irq().
Since adapter interrupts are not completely stoppable qdio implements
a software bit QDIO_QUEUE_IRQS_DISABLED to safely disable interrupts for an
input queue.
The old interface is preserved and will be used as is by zfcp.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
/drivers/s390/cio/qdio_setup.c
|
| dcc18f48a2f1a44c5e8848f30d0cf53a8066c62a |
|
16-Jul-2010 |
Christof Schmitt <christof.schmitt@de.ibm.com> |
[SCSI] zfcp: Enable data division support for FCP devices
Try to enable data division support for FCP devices and indicate in
the adapter status flag if it succeeded.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
/drivers/s390/cio/qdio_setup.c
|
| 5382fe11d90e3ed9602ce655e523852e3dbf3e35 |
|
17-May-2010 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: remove memset hack
Remove memset hack that relied on the layout of struct qdio_q
to avoid deletion of the slib pointer.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 432ac5e04b931df8376e0858d4bf0fd41436a271 |
|
26-Feb-2010 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: optimize cache line usage of struct qdio_irq
Remove a memset hack that relied on the internal layout of the
qdio_irq struct and move the per device statistics data into an own
cache line to avoid cache line bashing between the inbound and the
outbound queue tasklets. Also reduce the number of allocated queues
from 32 to 4 which is the current maximum. That saves a cache line
in struct qdio_irq.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| d1bf85902c28dd990c08f1703ea94109223549a7 |
|
26-Feb-2010 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
[S390] cio: fix storage key handling
Some parts of cio do not shift PAGE_DEFAULT_KEY correctly and end up
with an incorrect key in their data structures.
Since the default key is zero this doesn't really matter. However if
somebody would use key-controlled protection for debugging purposes
it would be quite helpful if all of this would work as expected.
Also remove a stale declaration.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 7883097f1602c8cbb1da764a6ac43e0b8a7f56d9 |
|
18-Dec-2009 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: remove superfluous log entries and WARN_ONs.
* Don't write debug feature log entries for sl, slsb and sbal since these
elements can be located from the qdio_q pointer which is also logged.
* Convert WARN_ON for wrong alignment of sbal to BUG_ON.
* Remove WARN_ON's for wrong alignment of q / qib / slib since these
alignments should be guaranteed by kmem_cache_alloc alignment /
struct aligned attribute / __get_free_page.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| d303b6fd858370c22d5c70c313669e3521a5f758 |
|
26-Mar-2009 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: report SIGA errors directly
Errors from SIGA instructions are stored in the per queue qdio_error
and reported back when the queue handler is called. That opens a race
when multiple error conditions occur simultanously.
Report SIGA errors immediately in the return value of do_QDIO so the
upper layer can react and SIGA errors no longer interfere with other
errors.
Move the SIGA error handling in qeth from the outbound handler to
qeth_flush_buffers.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 7a0b4cbc7d7d99763511b488b08bbc2607ddd1e3 |
|
25-Dec-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: fix error reporting for hipersockets
Hipersocket connections can encounter temporary busy conditions.
In case of the busy bit set we retry the SIGA operation immediatelly.
If the busy condition still persists after 100 ms we fail and report
the error to the upper layer. The second stage retry logic is removed.
In case of ongoing busy conditions the upper layer needs to reset the
connection.
The reporting of a SIGA error is now done synchronously to allow the
network driver to requeue the buffers. Also no error trace is created
for the temporary SIGA errors so the error message view is not flooded.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 50f769df1c4bea766c4eb927eae35728fb93e305 |
|
25-Dec-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: improve inbound buffer acknowledgement
- Use automatic acknowledgement of incoming buffers in QEBSM mode
- Move ACK for non-QEBSM mode always to the newest buffer to prevent
a race with qdio_stop_polling
- Remove the polling spinlock, the upper layer drivers return new buffers
in the same code path and could not run in parallel
- Don't flood the error log in case of no-target-buffer-empty
- In handle_inbound we check if we would overwrite an ACK'ed buffer, if so
advance the pointer to the oldest ACK'ed buffer so we don't overwrite an
empty buffer in qdio_stop_polling
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 22f9934767f49012ffbae753b28b8055bd28348f |
|
25-Dec-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: rework debug feature logging
- make qdio_trace a per device view
- remove s390dbf exceptions
- remove CONFIG_QDIO_DEBUG, not needed anymore if we check for the level
before calling sprintf
- use snprintf for dbf entries
- add start markers to see if the dbf view wrapped
- add a global error view for all queues
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| bbd50e172f75b1d12ef9b1bcf593b51a44199016 |
|
25-Dec-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: fix qeth port count detection
qeth needs to get the port count information before
qdio has allocated a page for the chsc operation.
Extend qdio_get_ssqd_desc() to store the data in the
specified structure.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 75f6276187e5ce5a312a0619fba2fe56c9290b48 |
|
03-Oct-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: prevent stack clobber
Don't print more information than fits into the string on the
stack. Combine the informational output of qdio to fit into
one line.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 58eb27cd7f4f1de2932b3e0e39ea54a27e9fef43 |
|
21-Aug-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: improve s390 debug feature usage
Improve s390 debug feature usage:
- log busy bit in dbf
- increase size of dbf views
- consistent logging of qdio api calls to setup view
- print subchannel number so one can associate the interface
with the dbf data
- only log events to one view
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 3f1934bc1a0dcc2b7c31c8fd4f41ea2dd6522c3e |
|
01-Aug-2008 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
[S390] qdio: fix section mismatch bug.
Fix the two section mismatch warnings below.
This fixes two real bugs since the code which has __exit annotations
may already be gone when it is called.
WARNING: vmlinux.o(.init.text+0x1cc4a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_setup_exit()
The function __init init_QDIO() references
a function __exit qdio_setup_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_setup_exit() so it may be used outside an exit section.
WARNING: vmlinux.o(.init.text+0x1cc7a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_remove_perf_stats()
The function __init init_QDIO() references
a function __exit qdio_remove_perf_stats().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_remove_perf_stats() so it may be used outside an exit section.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 3b8e3004aea95c687e8991583e7b150ec1416ff3 |
|
01-Aug-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: make sure qdr is aligned to page size
kzalloc does not guarantee the required alignment of qdr to page size,
use get_zeroed_page instead.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
/drivers/s390/cio/qdio_setup.c
|
| 779e6e1c724d30e0fd1baca78b852e41e3a23c1d |
|
17-Jul-2008 |
Jan Glauber <jang@linux.vnet.ibm.com> |
[S390] qdio: new qdio driver.
List of major changes:
- split qdio driver into several files
- seperation of thin interrupt code
- improved handling for multiple thin interrupt devices
- inbound and outbound processing now always runs in tasklet context
- significant less tasklet schedules per interrupt needed
- merged qebsm with non-qebsm handling
- cleanup qdio interface and added kerneldoc
- coding style
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
/drivers/s390/cio/qdio_setup.c
|