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path: root/drivers/infiniband/hw/ehca/ehca_eq.c (follow)
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2011-10-06IB/ehca: Remove IRQF_DISABLED, since it's a no-opYong Zhang1-2/+2
Since commit e58aa3d2d0cc ("genirq: Run irq handlers with interrupts disabled"), we run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled -- cf commit b738a50a2026 ("genirq: Warn when handler enables interrupts"). So now this flag is a no-op and can be removed. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Acked-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2010-08-04IB/ehca: Init irq tasklet before irq can happenAlexander Schmidt1-4/+4
Initialize tasklet before interrupts are requested to prevent scheduling of an uninitialized tasklet. Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-12-09IB/ehca: Rework destroy_eq()Alexander Schmidt1-3/+6
The ibmebus_free_irq() function, which might sleep, was called with interrupts disabled. To fix this, make sure that no interrupts are running by killing the interrupt tasklet. Also lock the shca_list_lock to protect against the poll_eqs_timer running concurrently. Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-12-21IB/ehca: Remove redundant test of vpageJulia Lawall1-1/+1
vpage is checked not to be NULL just after it is initialized at the beginning of each loop iteration. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; expression E; position p1,p2; @@ if (x@p1 == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( x@p2 == NULL | x@p2 != NULL ) // another path to the test that is not through p1? @s exists@ local idexpression r.x; position r.p1,r.p2; @@ ... when != x@p1 ( x@p2 == NULL | x@p2 != NULL ) @fix depends on !s@ position r.p1,r.p2; expression x,E; statement S1,S2; @@ ( - if ((x@p2 != NULL) || ...) S1 | - if ((x@p2 == NULL) && ...) S1 | - BUG_ON(x@p2 == NULL); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29IB/ehca: handle negative return value from ibmebus_request_irq() properlyHoang-Nam Nguyen1-18/+17
ehca_create_eq() was assigning a signed return value to an unsiged local variable and then checking if the variable was < 0, which meant that errors were always ignored. Fix this by using one variable for signed integer return values and another for u64 hcall return values. Bug originally found by Roel Kluin <12o3l@tiscali.nl>. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-17[POWERPC] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA driversJoachim Fenkes1-3/+3
Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device and struct of_platform_driver, respectively. Match the external ibmebus interface and drivers using it. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Roland Dreier <rolandd@cisco.com> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-20IB/ehca: Support small QP queuesStefan Roscher1-4/+4
eHCA2 supports QP queues that can be as small as 512 bytes. This greatly reduces memory overhead for consumers that use lots of QPs with small queues (e.g. RDMA-only QPs). Apart from dealing with firmware, this code needs to manage bite-sized chunks of kernel pages, making sure that no kernel page is shared between different protection domains. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
2007-07-17IB/ehca: Fix warnings issued by checkpatch.plHoang-Nam Nguyen1-1/+2
Run the existing ehca code through checkpatch.pl and clean up the worst of the coding style violations. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-02-16IB/ehca: Rework irq handlerHoang-Nam Nguyen1-0/+1
Rework ehca interrupt handling to avoid/reduce missed irq events. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-02-14[PATCH] Scheduled removal of SA_xxx interrupt flags fixupsThomas Gleixner1-2/+2
The obsolete SA_xxx interrupt flags have been used despite the scheduled removal. Fixup the remaining users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Roland Dreier <rolandd@cisco.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Greg KH <greg@kroah.com> Cc: Dave Airlie <airlied@linux.ie> Cc: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-09-22IB/ehca: Add driver for IBM eHCA InfiniBand adaptersHeiko J Schick1-0/+185
Add a driver for IBM GX bus InfiniBand adapters, which are usable with some pSeries/System p systems. Signed-off-by: Heiko J Schick <schickhj.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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