- 05 1月, 2011 1 次提交
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由 Jan Glauber 提交于
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: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 09 9月, 2010 1 次提交
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由 Jan Glauber 提交于
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: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NFrank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 28 7月, 2010 1 次提交
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由 Christof Schmitt 提交于
Try to enable data division support for FCP devices and indicate in the adapter status flag if it succeeded. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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- 17 5月, 2010 1 次提交
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由 Jan Glauber 提交于
Remove qdio API wrappers used by qeth and replace them by calling the appropriate functions directly. Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 08 3月, 2010 1 次提交
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由 Ursula Braun 提交于
zfcp and qeth are setting flags for the qdio-layer, but these flags are not used in qdio. Patch removes the flag definitions from qdio and their settings in zfcp and qeth. Cc: Jan Glauber <jang@linux.vnet.ibm.com> Cc: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NUrsula Braun <ursula.braun@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 27 2月, 2010 1 次提交
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由 Jan Glauber 提交于
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: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 22 6月, 2009 1 次提交
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由 Jan Glauber 提交于
Remove unneeded sanity checks from do_QDIO since this is the hot path. Change the type of bufnr and count to unsigned int so the check for the maximum value works. Reported-by: NRoel Kluin <roel.kluin@gmail.com> Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 26 3月, 2009 1 次提交
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由 Jan Glauber 提交于
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: NJan Glauber <jang@linux.vnet.ibm.com>
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- 25 12月, 2008 1 次提交
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由 Jan Glauber 提交于
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: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 11 10月, 2008 1 次提交
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由 Klaus-Dieter Wacker 提交于
Add support for z10 HiperSockets multiwrite SBALs on output queues. This is used on LPAR with EDDP enabled devices. Signed-off-by: NKlaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 02 8月, 2008 1 次提交
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由 Martin Schwidefsky 提交于
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 17 7月, 2008 1 次提交
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由 Jan Glauber 提交于
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: NCornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: NUtz Bacher <utz.bacher@de.ibm.com> Reviewed-by: NUrsula Braun <braunu@de.ibm.com> Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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- 29 4月, 2008 1 次提交
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由 Ursula Braun 提交于
Read out number of ports from the hardware. Signed-off-by: NUrsula Braun <braunu@de.ibm.com> Signed-off-by: NFrank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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- 26 1月, 2008 1 次提交
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 08 5月, 2007 1 次提交
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由 Ursula Braun 提交于
Free sent skbs in some finite amount of time. Affected are asynchronous queue of Hipersockets devices and the output queues of all eth-devices respectively. Signed-off-by: NUrsula Braun <braunu@de.ibm.com> Signed-off-by: NFrank Pavlic <fpavlic@de.ibm.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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- 16 12月, 2006 1 次提交
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由 Ursula Braun 提交于
A HiperSocket multicast queue works asynchronously. When sending buffers, the buffer state change from PRIMED to EMPTY may happen delayed. Reschedule the checking for changes in the outbound queue, if there are still PRIMED buffers. Signed-off-by: NUrsula Braun <braunu@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 04 10月, 2006 1 次提交
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由 Uwe Zeisberger 提交于
Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: NUwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 02 2月, 2006 1 次提交
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由 Heiko Carstens 提交于
- Remove all CVS generated information like e.g. revision IDs from drivers/s390 and include/asm-s390 (none present in arch/s390). - Add newline at end of arch/s390/lib/Makefile to avoid diff message. Acked-by: NAndreas Herrmann <aherrman@de.ibm.com> Acked-by: NFrank Pavlic <pavlic@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 07 1月, 2006 1 次提交
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由 Frank Pavlic 提交于
New feature V=V qdio pass-through. QDIO and HiperSockets processing in z/VM V=V guest environments (as well as V=R with z/VM running in LPAR mode) requires shadowing of all QDIO architecture queue elements. Especially the shadowing of SBALs and SLSBs structures in the hypervisor, and the need to issue SIGA SYNC operations to observe state changes, eventually causes significant CPU processing overhead in the hypervisor. The QDIO pass-through support for V=V guests avoids the shadowing of SBALs and SLSBs. This significantly reduces the hypervisor overhead for QDIO based I/O. Signed-off-by: NFrank Pavlic <pavlic@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
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!
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