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path: root/drivers/infiniband
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2007-04-27Merge branch 'for-linus' of ↵Linus Torvalds
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 ...
2007-04-25[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}Arnaldo Carvalho de Melo
To clearly state the intent of copying from linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25[SK_BUFF]: Convert skb->end to sk_buff_data_tArnaldo Carvalho de Melo
Now to convert the last one, skb->data, that will allow many simplifications and removal of some of the offset helpers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo
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>
2007-04-25[SK_BUFF]: Introduce skb_reset_transport_header(skb)Arnaldo Carvalho de Melo
For the common, open coded 'skb->h.raw = skb->data' operation, so that we can later turn skb->h.raw into a offset, reducing the size of struct sk_buff in 64bit land while possibly keeping it as a pointer on 32bit. This one touches just the most simple cases: skb->h.raw = skb->data; skb->h.raw = {skb_push|[__]skb_pull}() The next ones will handle the slightly more "complex" cases. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[SK_BUFF]: Introduce skb_reset_mac_header(skb)Arnaldo Carvalho de Melo
For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in 64bit land while possibly keeping it as a pointer on 32bit. This one touches just the most simple case, next will handle the slightly more "complex" cases. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[ETH]: Make eth_type_trans set skb->dev like the other *_type_transArnaldo Carvalho de Melo
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>
2007-04-24IB: Set class_dev->dev in core for nice device symlinkJoachim Fenkes
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>
2007-04-24IB/ehca: Implement modify_portJoachim Fenkes
Add "Modify Port" verb support to eHCA driver. The IB communication manager needs this to set the IsCM port capability bit when initializing. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-24IPoIB/cm: spin_lock_irqsave() -> spin_lock_irq() replacementsRoland Dreier
There are quite a few places in ipoib_cm.c where we know IRQs are enabled because we do something that sleeps in the same function, so we can convert several occurrences of spin_lock_irqsave() to a plain spin_lock_irq(). This cleans up the source a little and makes the code smaller too: add/remove: 0/0 grow/shrink: 1/5 up/down: 3/-51 (-48) function old new delta ipoib_cm_tx_reap 403 406 +3 ipoib_cm_stale_task 146 145 -1 ipoib_cm_dev_stop 173 172 -1 ipoib_cm_tx_handler 964 956 -8 ipoib_cm_rx_handler 956 937 -19 ipoib_cm_skb_reap 212 190 -22 Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-24IB/mad: Change SMI to use enums rather than magic return codesHal Rosenstock
Clarify code by changing return values from SMI functions to named enum values instead of magic 0/1 values. Signed-off-by: Hal Rosenstock <halr@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-24IB/umad: Implement GRH handling for sent/received MADsSean Hefty
We need to set the SGID index for routed MADs and pass received GRH information to userspace when a MAD is received. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2007-04-24IB/ipoib: Use ib_init_ah_from_path to initialize ah_attrSean Hefty
To support destinations that are not on the local IB subnet, IPoIB should include the GRH information when constructing an address handle. Using the existing ib_init_ah_from_path() call will do this for us. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2007-04-24IB/sa: Set src_path_bits correctly in ib_init_ah_from_path()Sean Hefty
src_path_bits needs to mask off the base LID value. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2007-04-24IB/ucm: Simplify ib_ucm_event()Sean Hefty
Use wait_event_interruptible() instead of a more complicated open-coded equivalent. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2007-04-24RDMA/ucma: Simplify ucma_get_event()Sean Hefty
Use wait_event_interruptible() instead of a more complicated open-coded equivalent. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2007-04-24IB/mthca: Simplify CQ cleaning in mthca_free_qp()Roland Dreier
mthca_free_qp() already has local variables to hold the QP's send_cq and recv_cq, so we can slightly clean up the calls to mthca_cq_clean() by using those local variables instead of expressions like to_mcq(qp->ibqp.send_cq). Also, by cleaning the recv_cq first, we can avoid worrying about whether the QP is attached to an SRQ for the second call, because we would only clean send_cq if send_cq is not equal to recv_cq, and that means send_cq cannot have any receive completions from the QP being destroyed. All this work even improves the generated code a bit: add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5 (-5) function old new delta mthca_free_qp 510 505 -5 Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-24IB/mthca: Fix mthca_write_mtt() on HCAs with hidden memoryRoland Dreier
Commit b2875d4c ("IB/mthca: Always fill MTTs from CPU") causes a crash in mthca_write_mtt() with non-memfree HCAs that have their memory hidden (that is, have only two PCI BARs instead of having a third BAR that allows access to the RAM attached to the HCA) on 64-bit architectures. This is because the commit just before, c20e20ab ("IB/mthca: Merge MR and FMR space on 64-bit systems") makes dev->mr_table.fmr_mtt_buddy equal to &dev->mr_table.mtt_buddy and hence mthca_write_mtt() tries to write directly into the HCA's MTT table. However, since that table is in the HCA's memory, this is impossible without the PCI BAR that gives access to that memory. This causes a crash because mthca_tavor_write_mtt_seg() basically tries to dereference some offset of a NULL pointer. Fix this by adding a test of MTHCA_FLAG_FMR in mthca_write_mtt() so that we always use the WRITE_MTT firmware command rather than writing directly if FMRs are not enabled. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/mthca: Update HCA firmware revisionsRoland Dreier
Update the driver's list of current firmware versions with Mellanox's latest releases. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix WC format drift between user and kernel spaceRobert Walsh
The kernel ib_wc structure now uses a QP pointer, but the user space equivalent uses a QP number instead. This means we can no longer use a simple structure copy to copy stuff into user space. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Check that a UD work request's address handle is validRobert Walsh
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Remove duplicate stuff from ipath_verbs.hRobert Walsh
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Check reserved memory keysRobert Walsh
Don't let userspace use the direct-physical-map L_key or R_key. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix unit selection when all CPU affinity bits setBryan O'Sullivan
At some point things changed so that all the affinity bits can be set, but cpus_full() macro is not true. This caused problems with the unit selection logic on multi-unit (board) configurations. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Don't allow QPs 0 and 1 to be opened multiple timesBryan O'Sullivan
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Disable IB link earlier in shutdown sequenceBryan O'Sullivan
Move the code that shuts down the IB link earlier in the unload process, to be sure no new packets can arrive while we are unloading. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Prevent random program use of diags interfaceBryan O'Sullivan
To prevent random utility reads and writes of the diag interface to the chip, we first require a handshake of reading from offset 0 and writing to offset 0 before any other reads or writes can be done through the diags device. Otherwise chip errors can be triggered. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: On unrecoverable errors, force link down, LEDs offBryan O'Sullivan
If the chip is no longer usable, LEDs should be turned off so system can be found easily in the cluster. Also some minor reorganizing so both chips print hardware error message at same point and only if there were unrecovered errors Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix driver crash (in interrupt or during unload) after chip resetMichael Albaugh
Re-init of the kernel structures after a chip reset was leaving the portdata structure for port zero in an inconsistent state, and a pointer to it either stale (in re-init code) or NULL (in devdata) Fixing the order of operations on this struct, and the condition for interrupt access, prevents the crashes. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Improve handling and reporting of parity errorsBryan O'Sullivan
Mostly cleanup. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Print better error messages if kernel is misconfiguredBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Force PIOAvail update entry pointArthur Jones
Due to a chip bug, the PIOAvail register is not always updated to memory. This patch allows userspace to force an update. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Call free_irq() on chip specific initialization failureArthur Jones
In initialization, if we bailed at chip specific initialization, we forgot to clean up the irq we had requested. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Discard multicast packets without a GRHBryan O'Sullivan
This patch fixes a bug where multicast packets without a GRH were not being dropped as per the IB spec. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix calculation for number of kernel PIO buffersBryan O'Sullivan
If the module parameter "kpiobufs" is set too high, the calculation to reset it to a sane value was incorrect. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Remove unused ipath_read_kreg64_port()Bryan O'Sullivan
Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix RDMA reads of length zero and error handlingRalph Campbell
Fix RDMA read response length checking for RDMA_READ_RESPONSE_ONLY to allow a zero length response. RDMA read responses which don't match the expected length or occur in response to some other operation should generate a completion queue error (see table 56, ch. 9.9.2.3 in the IB spec). Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Allow receive ports mapped into userspace to be sharedMark Debbage
Improve port-sharing performance by allowing any process to receive packets from the shared hardware port under a spin lock for mutual exclusion. Previously, one process was nominated as the master and that process was responsible for receiving all packets from the shared hardware port and either consuming them or forwarding them to their destination. This led to starvation problems for other processes when the master process was busy in computation phases. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix port sharing on powerpcRalph Campbell
The port sharing feature mixed kernel virtual addresses as well as physical addresses for the offset used to describe the mmap address to map the InfiniPath hardware into user space. This had a conflict on powerpc. The new scheme converts it to a physical address so it doesn't conflict with chip addresses and yet still fits in 40/44 bits so it isn't truncated by 32-bit applications calling mmap64(). Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix CQ flushing when QP is modified to error stateBryan O'Sullivan
If a receive work request has been removed from the queue but has not had a CQ entry generated for it and the QP is modified to the error state, the completion entry generated is incorrect. This patch fixes the problem. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix bad argument to clear_bit()Bryan O'Sullivan
Code was converted from a &= ~mask to clear_bit, but the bit was left shifted instead of being used directly, so we were either trashing memory several pages away, or sometimes taking a kernel page fault on an invalid page. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Change packet problems vs chip errors handling and reportingBryan O'Sullivan
Some types of packet errors are moderately common with longer IB cables and large clusters, and are not reported with prints by other IB HCA drivers. This suppresses those messages unless the new __IPATH_ERRPKTDBG bit is set in ipath_debug. Reporting of temporarily disabled frequent error interrupts was also made clearer We also distinguish between chip errors, and bad packets sent or received in the wording of the messages. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix PSN update for RC retriesRalph Campbell
This patch fixes a number of bugs with updating the PSN for retries of RC requests. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix QP error completion queue entriesRalph Campbell
When switching to the QP error state, the completion queue entries (error or flush) were not being generated correctly. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix up some debug messagesBryan O'Sullivan
ipath_dbg doesn't need the same prefixes that printk does. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Support larger IB_QP_MAX_DEST_RD_ATOMIC and IB_QP_MAX_QP_RD_ATOMICRalph Campbell
This patch adds support for multiple RDMA reads and atomics to be sent before an ACK is required to be seen by the requester. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: NMI cpu lockup if local loopback usedRalph Campbell
If a post send is done in loopback and there is no receive queue entry, the sending QP is put on a timeout list for a while so the receiver has a chance to post a receive buffer. If the another post send is done, the code incorrectly tried to put the QP on the timeout list again an corrupted the timeout list. This eventually leads to a spin lock deadlock NMI due to the timer function looping forever with the lock held. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix SRQ limit event causing dropped CQ entryRalph Campbell
A silly programming error causes a CQ entry to not be generated if a SRQ limit event is generated. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Don't initialize port memory for subportsRalph Campbell
A recent change was made to allocate memory for a port after CPU affinity is set. That change didn't account for subports and was trying to allocate memory for the port twice. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Definitions of two RXE parity err bits were reversedBryan O'Sullivan
The chip documentation on the expected TID vs eager TID parity error bits was reversed from what was implemented in the RTL, for both chips. This corrects the definitions. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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