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path: root/drivers/infiniband/hw/amso1100
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* IB: Drop code after return statementJulia Lawall2008-09-20
| | | | | | | | A break after a return serves no purpose, remove it. Signed-off-by: Julia Lawall <julia@diku.dk> Reviewed-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/core: Add local DMA L_Key supportSteve Wise2008-07-15
| | | | | | | | | | | | | | - Change the IB_DEVICE_ZERO_STAG flag to the transport-neutral name IB_DEVICE_LOCAL_DMA_LKEY, which is used by iWARP RNICs to indicate 0 STag support and IB HCAs to indicate reserved L_Key support. - Add a u32 local_dma_lkey member to struct ib_device. Drivers fill this in with the appropriate local DMA L_Key (if they support it). - Fix up the drivers using this flag. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/core: Remove IB_DEVICE_SEND_W_INV capability flagRoland Dreier2008-06-09
| | | | | | | | | | | | | | | | | | In 2.6.26, we added some support for send with invalidate work requests, including a device capability flag to indicate whether a device supports such requests. However, the support was incomplete: the completion structure was not extended with a field for the key contained in incoming send with invalidate requests. Full support for memory management extensions (send with invalidate, local invalidate, fast register through a send queue, etc) is planned for 2.6.27. Since send with invalidate is not very useful by itself, just remove the IB_DEVICE_SEND_W_INV bit before the 2.6.26 final release; we will add an IB_DEVICE_MEM_MGT_EXTENSIONS bit in 2.6.27, which makes things simpler for applications, since they will not have quite as confusing an array of fine-grained bits to check. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB: expand ib_umem_get() prototypeArthur Kepner2008-04-29
| | | | | | | | | | | | | | | | | | | Add a new parameter, dmasync, to the ib_umem_get() prototype. Use dmasync = 1 when mapping user-allocated CQs with ib_umem_get(). Signed-off-by: Arthur Kepner <akepner@sgi.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jes Sorensen <jes@sgi.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2008-04-21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits) SCSI: convert struct class_device to struct device DRM: remove unused dev_class IB: rename "dev" to "srp_dev" in srp_host structure IB: convert struct class_device to struct device memstick: convert struct class_device to struct device driver core: replace remaining __FUNCTION__ occurrences sysfs: refill attribute buffer when reading from offset 0 PM: Remove destroy_suspended_device() Firmware: add iSCSI iBFT Support PM: Remove legacy PM (fix) Kobject: Replace list_for_each() with list_for_each_entry(). SYSFS: Explicitly include required header file slab.h. Driver core: make device_is_registered() work for class devices PM: Convert wakeup flag accessors to inline functions PM: Make wakeup flags available whenever CONFIG_PM is set PM: Fix misuse of wakeup flag accessors in serial core Driver core: Call device_pm_add() after bus_add_device() in device_add() PM: Handle device registrations during suspend/resume block: send disk "change" event for rescan_partitions() sysdev: detect multiple driver registrations ... Fixed trivial conflict in include/linux/memory.h due to semaphore header file change (made irrelevant by the change to mutex).
| * IB: convert struct class_device to struct deviceTony Jones2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the main ib_device to use struct device instead of struct class_device as class_device is going away. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | drivers: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox2008-04-18
|/ | | | | | | | | None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
* RDMA/amso1100: Add check for NULL reply_msg in c2_intr()Tom Tucker2008-04-17
| | | | | | | | | Fix a place where we might dereference a NULL pointer; this fixes Coverity CID 1392. On inspection I also found a place where we could attempt to kmem_cache_free() a NULL pointer, so fix this too. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Add support for "send with invalidate" work requestsRoland Dreier2008-04-17
| | | | | | | | Handle IB_WR_SEND_WITH_INV work requests. This resurrects a patch sent long ago by Mikkel Hagen <mhagen@iol.unh.edu>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/core: Add support for "send with invalidate" work requestsRoland Dreier2008-04-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new IB_WR_SEND_WITH_INV send opcode that can be used to mark a "send with invalidate" work request as defined in the iWARP verbs and the InfiniBand base memory management extensions. Also put "imm_data" and a new "invalidate_rkey" member in a new "ex" union in struct ib_send_wr. The invalidate_rkey member can be used to pass in an R_Key/STag to be invalidated. Add this new union to struct ib_uverbs_send_wr. Add code to copy the invalidate_rkey field in ib_uverbs_post_send(). Fix up low-level drivers to deal with the change to struct ib_send_wr, and just remove the imm_data initialization from net/sunrpc/xprtrdma/, since that code never does any send with immediate operations. Also, move the existing IB_DEVICE_SEND_W_INV flag to a new bit, since the iWARP drivers currently in the tree set the bit. The amso1100 driver at least will silently fail to honor the IB_SEND_INVALIDATE bit if passed in as part of userspace send requests (since it does not implement kernel bypass work request queueing). Remove the flag from all existing drivers that set it until we know which ones are OK. The values chosen for the new flag is not consecutive to avoid clashing with flags defined in the XRC patches, which are not merged yet but which are already in use and are likely to be merged soon. This resurrects a patch sent long ago by Mikkel Hagen <mhagen@iol.unh.edu>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/core: Add creation flags to struct ib_qp_init_attrEli Cohen2008-04-17
| | | | | | | | | | | | | | Add a create_flags member to struct ib_qp_init_attr that will allow a kernel verbs consumer to create a pass special flags when creating a QP. Add a flag value for telling low-level drivers that a QP will be used for IPoIB UD LSO. The create_flags member will also be useful for XRC and ehca low-latency QP support. Since no create_flags handling is implemented yet, add code to all low-level drivers to return -EINVAL if create_flags is non-zero. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB: Replace remaining __FUNCTION__ occurrences with __func__Harvey Harrison2008-04-17
| | | | | | | | __FUNCTION__ is gcc-specific, use __func__ instead. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Endian annotate mqsq allocatorRoland Dreier2008-04-17
| | | | Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Start of endianness annotationRoland Dreier2008-04-17
| | | | | Signed-off-by: Roland Dreier <rolandd@cisco.com> Acked-by: Steve Wise <swise@opengridcomputing.com>
* RDMA/amso1100: Don't use 0UL as a NULL pointerRoland Dreier2008-04-17
| | | | | | | | | | | | | | | Write tests for NULL pointers as if (!ptr) instead of if (ptr == 0UL) to fix sparse warnings. Signed-off-by: Roland Dreier <rolandd@cisco.com> Acked-by: Steve Wise <swise@opengridcomputing.com>
* [NET]: Nuke SET_MODULE_OWNER macro.Ralf Baechle2007-10-10
| | | | | | | | | | | | It's been a useless no-op for long enough in 2.6 so I figured it's time to remove it. The number of people that could object because they're maintaining unified 2.4 and 2.6 drivers is probably rather small. [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* RDMA/amso1100: Initialize the wait_queue_head_t in the c2_qp structureTom Tucker2007-07-28
| | | | | | | | | Fix a crash if the driver has to wait for a QP reference to be dropped when destroying the QP. Signed-off-by: Ethan Burns <eaburns@iol.unh.edu> Acked-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* mm: Remove slab destructors from kmem_cache_create().Paul Mundt2007-07-19
| | | | | | | | | | | | | | Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* IB: Use menuconfig for InfiniBand menuJan Engelhardt2007-07-09
| | | | | | | | | | Change Kconfig objects from "menu, config" into "menuconfig" so that the user can disable the whole feature without having to enter the menu first. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [IPV4]: Convert IPv4 devconf to an arrayHerbert Xu2007-06-07
| | | | | | | | | This patch converts the ipv4_devconf config members (everything except sysctl) to an array. This allows easier manipulation which will be needed later on to provide better management of default config values. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* IB/uverbs: Export ib_umem_get()/ib_umem_release() to modulesRoland Dreier2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Export ib_umem_get()/ib_umem_release() and put low-level drivers in control of when to call ib_umem_get() to pin and DMA map userspace, rather than always calling it in ib_uverbs_reg_mr() before calling the low-level driver's reg_user_mr method. Also move these functions to be in the ib_core module instead of ib_uverbs, so that driver modules using them do not depend on ib_uverbs. This has a number of advantages: - It is better design from the standpoint of making generic code a library that can be used or overridden by device-specific code as the details of specific devices dictate. - Drivers that do not need to pin userspace memory regions do not need to take the performance hit of calling ib_mem_get(). For example, although I have not tried to implement it in this patch, the ipath driver should be able to avoid pinning memory and just use copy_{to,from}_user() to access userspace memory regions. - Buffers that need special mapping treatment can be identified by the low-level driver. For example, it may be possible to solve some Altix-specific memory ordering issues with mthca CQs in userspace by mapping CQ buffers with extra flags. - Drivers that need to pin and DMA map userspace memory for things other than memory regions can use ib_umem_get() directly, instead of hacks using extra parameters to their reg_phys_mr method. For example, the mlx4 driver that is pending being merged needs to pin and DMA map QP and CQ buffers, but it does not need to create a memory key for these buffers. So the cleanest solution is for mlx4 to call ib_umem_get() in the create_qp and create_cq methods. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB: Return "maybe missed event" hint from ib_req_notify_cq()Roland Dreier2007-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The semantics defined by the InfiniBand specification say that completion events are only generated when a completions is added to a completion queue (CQ) after completion notification is requested. In other words, this means that the following race is possible: while (CQ is not empty) ib_poll_cq(CQ); // new completion is added after while loop is exited ib_req_notify_cq(CQ); // no event is generated for the existing completion To close this race, the IB spec recommends doing another poll of the CQ after requesting notification. However, it is not always possible to arrange code this way (for example, we have found that NAPI for IPoIB cannot poll after requesting notification). Also, some hardware (eg Mellanox HCAs) actually will generate an event for completions added before the call to ib_req_notify_cq() -- which is allowed by the spec, since there's no way for any upper-layer consumer to know exactly when a completion was really added -- so the extra poll of the CQ is just a waste. Motivated by this, we add a new flag "IB_CQ_REPORT_MISSED_EVENTS" for ib_req_notify_cq() so that it can return a hint about whether the a completion may have been added before the request for notification. The return value of ib_req_notify_cq() is extended so: < 0 means an error occurred while requesting notification == 0 means notification was requested successfully, and if IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events were missed and it is safe to wait for another event. > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed in. It means that the consumer must poll the CQ again to make sure it is empty to avoid the race described above. We add a flag to enable this behavior rather than turning it on unconditionally, because checking for missed events may incur significant overhead for some low-level drivers, and consumers that don't care about the results of this test shouldn't be forced to pay for the test. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB: Add CQ comp_vector supportMichael S. Tsirkin2007-05-07
| | | | | | | | | | | | | | | | | | | | | Add a num_comp_vectors member to struct ib_device and extend ib_create_cq() to pass in a comp_vector parameter -- this parallels the userspace libibverbs API. Update all hardware drivers to set num_comp_vectors to 1 and have all ULPs pass 0 for the comp_vector value. Pass the value of num_comp_vectors to userspace rather than hard-coding a value of 1. We want multiple CQ event vector support (via MSI-X or similar for adapters that can generate multiple interrupts), but it's not clear how many vectors we want, or how we want to deal with policy issues such as how to decide which vector to use or how to set up interrupt affinity. This patch is useful for experimenting, since no core changes will be necessary when updating a driver to support multiple vectors, and we know that we want to make at least these changes anyway. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-04-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (49 commits) IB: Set class_dev->dev in core for nice device symlink IB/ehca: Implement modify_port IB/umad: Clarify documentation of transaction ID IPoIB/cm: spin_lock_irqsave() -> spin_lock_irq() replacements IB/mad: Change SMI to use enums rather than magic return codes IB/umad: Implement GRH handling for sent/received MADs IB/ipoib: Use ib_init_ah_from_path to initialize ah_attr IB/sa: Set src_path_bits correctly in ib_init_ah_from_path() IB/ucm: Simplify ib_ucm_event() RDMA/ucma: Simplify ucma_get_event() IB/mthca: Simplify CQ cleaning in mthca_free_qp() IB/mthca: Fix mthca_write_mtt() on HCAs with hidden memory IB/mthca: Update HCA firmware revisions IB/ipath: Fix WC format drift between user and kernel space IB/ipath: Check that a UD work request's address handle is valid IB/ipath: Remove duplicate stuff from ipath_verbs.h IB/ipath: Check reserved memory keys IB/ipath: Fix unit selection when all CPU affinity bits set IB/ipath: Don't allow QPs 0 and 1 to be opened multiple times IB/ipath: Disable IB link earlier in shutdown sequence ...
| * IB: Set class_dev->dev in core for nice device symlinkJoachim Fenkes2007-04-25
| | | | | | | | | | | | | | | | | | | | | | All RDMA drivers except ehca set class_dev->dev to their dma_device value (ehca leaves this unset). dma_device is the only value that makes any sense, so move this assignment to core/sysfs.c. This reduce the duplicated code in the rest of the drivers and gives ehca a nice /sys/class/infiniband/ehcaX/device symlink. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | [SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo2007-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [ETH]: Make eth_type_trans set skb->dev like the other *_type_transArnaldo Carvalho de Melo2007-04-26
|/ | | | | | | One less thing for drivers writers to worry about. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Scheduled removal of SA_xxx interrupt flags fixupsThomas Gleixner2007-02-14
| | | | | | | | | | | | | | | | | | | | | | 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>
* IB: Return qp pointer as part of ib_wcMichael S. Tsirkin2007-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | struct ib_wc currently only includes the local QP number: this matches the IB spec, but seems mostly useless. The following patch replaces this with the pointer to qp itself, and updates all low level drivers and all users. This has the following advantages: - Ability to get a per-qp context through wc->qp->qp_context - Existing drivers already have the qp pointer ready in poll cq, so this change actually saves a tiny bit (extra memory read) on data path (for ehca it would actually be expensive to find the QP pointer when polling a CQ, but ehca does not support SRQ so we can leave wc->qp as NULL for ehca) - Users that need the QP number can still get it through wc->qp->qp_num Use case: In IPoIB connected mode code, I have a common CQ shared by multiple QPs. To track connection usage, I need a way to get at some per-QP context upon the completion, and I would like to avoid allocating context object per work request just to stick a QP pointer into it. With this code, I can just use wc->qp->qp_context. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix memory leak in c2_qp_modify()Krishna Kumar2006-12-12
| | | | | | | vq_req is leaked in error cases. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [PATCH] slab: remove SLAB_ATOMICChristoph Lameter2006-12-07
| | | | | | | | SLAB_ATOMIC is an alias of GFP_ATOMIC Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* RDMA/amso1100: Prevent deadlock in destroy QPKrishna Kumar2006-11-29
| | | | | | | | | | | It is possible to swap the CQs used for send_cq and recv_cq when creating two different QPs. If these two QPs are then destroyed at the same time, an AB-BA deadlock can occur because the CQ locks are taken our of order. Fix this by always taking CQ locks in a fixed order. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB: Convert kmem_cache_t -> struct kmem_cacheRoland Dreier2006-11-29
| | | | Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix section mismatchesRoland Dreier2006-11-29
| | | | | | | | | | The amso1100 driver was missing a couple of __devinit/__devexit annotations for init/cleanup functions that are called from __devinit/__devexit functions. Reported by Randy Dunlap <randy.dunlap@oracle.com>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix && typoJean Delvare2006-11-13
| | | | | | | | | Fix the AMSO1100 firmware version computation, which was broken due to "&&" being used where "&" should have. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix unitialized pseudo_netdev accessed in c2_register_deviceTom Tucker2006-11-13
| | | | | | | | Rework some load-time error handling: c2_register_device() leaked when it failed, and the function that called it didn't check the return code. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/amso1100: Fix incorrect pr_debug()Steve Wise2006-10-30
| | | | | | | pr_debug() was printing the wrong stuff. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/amso1100: Use dma_alloc_coherent() instead of kmalloc/dma_map_singleSteve Wise2006-10-30
| | | | | | | | The Ammasso driver needs to use dma_alloc_coherent() for allocating memory that will be used by the HW for dma. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix a NULL dereference in error pathAdrian Bunk2006-10-16
| | | | | | | | | | | This patch fixes a NULL dereference spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Acked-by: Steve Wise <swise@opengridcomputing.com> Acked-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: pci_module_init() conversionHenrik Kretzschmar2006-10-16
| | | | | | | | pci_module_init() convertion in amso1100 driver. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix build with debugging offRoland Dreier2006-10-10
| | | | | | | | | | | Since pr_debug() has changed from a macro to an inline function when DEBUG is not defined, its arguments now need to be defined even when debugging is off. Therefore to_event_str() and to_qp_state_str() need to be moved out of #ifdef DEBUG. The compiler will throw the definitions away if DEBUG is not defined, but it needs to be able to see that the functions exist. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Add spinlocks to serialize ib_post_send/ib_post_recvTom Tucker2006-10-10
| | | | | | | | | | | The AMSO driver was not thread-safe in the post WR code and had code that would sleep if the WR post FIFO was full. Since these functions can be called on interrupt level I changed the sleep to a udelay. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* RDMA/amso1100: Fix memory leak in c2_reg_phys_mr()Roland Dreier2006-09-28
| | | | | | | | | If the allocation of mr fails, then c2_reg_phys_mr() leaks the page_list array it allocated earlier. This was Coverity CID #1413. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix error path in c2_llp_accept()Eric Sesterhenn2006-09-28
| | | | | | | | | | | Another NULL dereference spotted by the Coverity checker (cid #1395): In case we can't alloc the vq_req, we goto bail1, where we call vq_req_free(c2dev, vq_req); which then dereferences vq_req. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Acked-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix compile warningsRoland Dreier2006-09-27
| | | | | | | Make sure all 64-bit quantities are cast to unsigned long long when printed with "%ll" printk formats. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [PATCH] missing includes from infiniband mergeAl Viro2006-09-23
| | | | | | | | | | indirect chains of includes are arch-specific and can't be relied upon... (hell, even attempt to build it for itanic would trigger vmalloc.h ones; err.h triggers on e.g. alpha). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* RDMA/amso1100: Add driver for Ammasso 1100 RNICTom Tucker2006-09-22
Add a driver for the Ammasso 1100 gigabit ethernet RNIC. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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