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* IB/ehca: Fix static rate calculationJoachim Fenkes2007-11-13
| | | | | | | | | | | The IPD (inter-packet delay) formula was a little off and assumed a fixed physical link rate; fix the formula and query the actual physical link rate, now that we can get it. Also, refactor the calculation into a common function ehca_calc_ipd() and use that instead of duplicating code. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ehca: Return physical link information in query_port()Joachim Fenkes2007-11-13
| | | | | | | | Newer firmware versions return physical port information to the partition, so hand that information to the consumer if it's present. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix race with ACK retry timeout list managementRalph Campbell2007-11-13
| | | | | | | | | | | When an ACK is received, the QP is removed from the timeout list and then if there are still pending send WQEs, the QP is put back on the timeout list. It is possible that another post send has put the QP on the timeout list thus, a check needs to be made before trying to do it again or the list is corrupted. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix memory leak in ipath_resize_cq() if copy_to_user() failsRalph Campbell2007-11-13
| | | | | | Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Patrick Marchand Latifi <patrick.latifi@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-10-30
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/fmr_pool: Stop ib_fmr threads from contributing to load average IB/ipath: Fix incorrect use of sizeof on msg buffer (function argument) IB/ipath: Limit length checksummed in eeprom IB/ipath: Fix a race where s_last is updated without lock held IB/mlx4: Lock SQ lock in mlx4_ib_post_send() IPoIB/cm: Fix receive QP cleanup
| * IB/ipath: Fix incorrect use of sizeof on msg buffer (function argument)Dave Olson2007-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Inside a function declared as void foo(char bar[512]) the value of sizeof bar is the size of a pointer, not 512. So avoid constructions like this by passing the size explicitly. Also reduce the size of the buffer to 128 bytes (512 was overly generous). Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Limit length checksummed in eepromMichael Albaugh2007-10-30
| | | | | | | | | | | | | | | | | | | | | | | | The small eeprom that holds the GUID etc. contains a data-length, but if the actual eeprom is new or has been erased, that byte will be 0xFF, which is greater than the maximum physical length of the eeprom, and more importantly greater than the length of the buffer we vmalloc'd. Sanity-check the length to avoid the possbility of reading past end of buffer. Signed-off-by: Michael Albaugh <Michael.Albaugh@Qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix a race where s_last is updated without lock heldRalph Campbell2007-10-30
| | | | | | | | | | | | | | | | | | | | | | | | There is a small window where a send work queue entry could be overwritten by ib_post_send() because s_last is updated before the entry is read. This patch closes the window by acquiring the lock and updating the last send work queue entry index after reading the wr_id. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/mlx4: Lock SQ lock in mlx4_ib_post_send()Roland Dreier2007-10-30
| | | | | | | | | | | | | | | | | | | | | | Because of a typo, mlx4_ib_post_send() takes the same lock rq.lock as mlx4_ib_post_recv(). Correct the code so the intended sq.lock is taken when posting a send. Noticed by Yossi Leybovitch and pointed out by Jack Morgenstein from Mellanox. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | SG: Change sg_set_page() to take length and offset argumentJens Axboe2007-10-24
|/ | | | | | | | | | Most drivers need to set length and offset as well, so may as well fold those three lines into one. Add sg_assign_page() for those two locations that only needed to set the page, where the offset/length is set outside of the function context. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-10-23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: mlx4_core: Increase command timeout for INIT_HCA to 10 seconds IPoIB/cm: Use common CQ for CM send completions IB/uverbs: Fix checking of userspace object ownership IB/mlx4: Sanity check userspace send queue sizes IPoIB: Rewrite "if (!likely(...))" as "if (unlikely(!(...)))" IB/ehca: Enable large page MRs by default IB/ehca: Change meaning of hca_cap_mr_pgsize IB/ehca: Fix ehca_encode_hwpage_size() and alloc_fmr() IB/ehca: Fix masking error in {,re}reg_phys_mr() IB/ehca: Supply QP token for SRQ base QPs IPoIB: Use round_jiffies() for ah_reap_task RDMA/cma: Fix deadlock destroying listen requests RDMA/cma: Add locking around QP accesses IB/mthca: Avoid alignment traps when writing doorbells mlx4_core: Kill mlx4_write64_raw()
| * IB/mlx4: Sanity check userspace send queue sizesJack Morgenstein2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | Add sanity checks to send queue sizes passed in from userspace. The minimum sq stride value below is taken from the MT25408 PRM (section 11.10, Table 306, log_sq_stride definition). Without this check, userspace can submit arbitrarily large/small values for the number of WQEs and the stride, which can crash the kernel. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Enable large page MRs by defaultJoachim Fenkes2007-10-18
| | | | | | | | | | Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Change meaning of hca_cap_mr_pgsizeJoachim Fenkes2007-10-18
| | | | | | | | | | | | | | | | | | | | ehca_shca.hca_cap_mr_pgsize now contains all supported page sizes ORed together. This makes some checks easier to code and understand, plus we can return this value verbatim in query_hca(), fixing a problem with SRP (reported by Anton Blanchard -- thanks!). Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Fix ehca_encode_hwpage_size() and alloc_fmr()Joachim Fenkes2007-10-18
| | | | | | | | | | | | | | | | Simplify ehca_encode_hwpage_size(), fixing an infinite loop for pgsize == 0 in the process. Fix the bug in alloc_fmr() that triggered the loop. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Fix masking error in {,re}reg_phys_mr()Joachim Fenkes2007-10-18
| | | | | | | | | | Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Supply QP token for SRQ base QPsJoachim Fenkes2007-10-18
| | | | | | | | | | | | | | | | Because hardware reports the SRQ token in RWQEs of SRQ base QPs, supply the base QP token as SRQ token, so we can properly find the SRQ base QP. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/mthca: Avoid alignment traps when writing doorbellsRoland Dreier2007-10-15
| | | | | | | | | | | | | | | | | | | | Architectures such as ia64 see alignment traps when doing a 64-bit read from __be32 doorbell[2] arrays to do doorbell writes in mthca_write64(). Fix this by just passing the two halves of the doorbell value into mthca_write64(). This actually improves the generated code by allowing the compiler to see what's going on better. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | IB/ehca: Fix sg_page() falloutOlof Johansson2007-10-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | More fallout from sg_page changes: drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_set_pagebuf_user1': drivers/infiniband/hw/ehca/ehca_mrmw.c:1779: error: 'struct scatterlist' has no member named 'page' drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_check_kpages_per_ate': drivers/infiniband/hw/ehca/ehca_mrmw.c:1835: error: 'struct scatterlist' has no member named 'page' drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_set_pagebuf_user2': drivers/infiniband/hw/ehca/ehca_mrmw.c:1870: error: 'struct scatterlist' has no member named 'page' Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | [SG] Update drivers to use sg helpersJens Axboe2007-10-22
| | | | | | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Add missing newlines to some uses of dev_<level> messagesJoe Perches2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found these while looking at printk uses. Add missing newlines to dev_<level> uses Add missing KERN_<level> prefixes to multiline dev_<level>s Fixed a wierd->weird spelling typo Added a newline to a printk Signed-off-by: Joe Perches <joe@perches.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Roland Dreier <rolandd@cisco.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: James Smart <James.Smart@Emulex.Com> Cc: Andrew Vasquez <andrew.vasquez@qlogic.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [POWERPC] ibmebus: Move to of_device and of_platform_driver, match eHCA and ↵Joachim Fenkes2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | eHEA drivers 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>
* | infiniband: sg chaining supportJens Axboe2007-10-16
|/ | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-10-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (87 commits) mlx4_core: Fix section mismatches IPoIB: Allow setting policy to ignore multicast groups IB/mthca: Mark error paths as unlikely() in post_srq_recv functions IB/ipath: Minor fix to ordering of freeing and zeroing of tid pages. IB/ipath: Remove redundant link state checks IB/ipath: Fix IB_EVENT_PORT_ERR event IB/ipath: Better handling of unexpected GPIO interrupts IB/ipath: Maintain active time on all chips IB/ipath: Fix QHT7040 serial number check IB/ipath: Indicate a couple of chip bugs to userspace IB/ipath: iba6110 rev4 no longer needs recv header overrun workaround IB/ipath: Use counters in ipath_poll and cleanup interrupts in ipath_close IB/ipath: Remove duplicate copy of LMC IB/ipath: Add ability to set the LMC via the sysfs debugging interface IB/ipath: Optimize completion queue entry insertion and polling IB/ipath: Implement IB_EVENT_QP_LAST_WQE_REACHED IB/ipath: Generate flush CQE when QP is in error state IB/ipath: Remove redundant code IB/ipath: Future proof eeprom checksum code (contents reading) IB/ipath: UC RDMA WRITE with IMMEDIATE doesn't send the immediate ...
| * IB/mthca: Mark error paths as unlikely() in post_srq_recv functionsEli Cohen2007-10-10
| | | | | | | | | | Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Minor fix to ordering of freeing and zeroing of tid pages.Dave Olson2007-10-10
| | | | | | | | | | | | | | | | Fixed to be the same as everywhere else. copy and then zero the page * in the array first, and then pass the copy to the VM routines. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Remove redundant link state checksRalph Campbell2007-10-10
| | | | | | | | | | | | | | | | | | This patch removes some redundant checks when the SMA changes the link state since the same checks are made in the lower level function that sets the state. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix IB_EVENT_PORT_ERR eventRalph Campbell2007-10-10
| | | | | | | | | | | | | | | | | | | | The link state event calls were being generated when the SM told the SMA to change link states. This works for IB_EVENT_PORT_ACTIVE but not if the link goes down and stays down. The fix is to generate event calls from the interrupt handler when the HW link state changes. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Better handling of unexpected GPIO interruptsMichael Albaugh2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The General Purpose I/O pins can be configured to cause interrupts. At the end of the interrupt code dealing with all known causes, a message is output if any bits remain un-handled. Since this is a "can't happen" scenario, it should only be triggered by bugs elsewhere. It is harmless, and potentially beneficial, to limit the damage by masking any such unexpected interrupts. This patch adds disabling of interrupts from any pins that should not have been allowed to interrupt, in addition to emitting a message. Signed-off-by: Michael Albaugh <Michael.Albaugh@Qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Maintain active time on all chipsMichael Albaugh2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a count of "active hours" maintained in EEPROM, to aid troubleshooting. The definition of "active" is based on traffic exceeding a threshold in any given 5-second polling interval. As originally written, the check was inadvertently bypassed for chips whose counters were 64-bits wide, and only applied to chips with 32-bit wide counters. This patch moves the test for amount of traffic "out" to a more common location, rather than depending on a side-effect of the software emulation of 64-bit counts on chips whose hardware is only 32-bits wide. Signed-off-by: Michael Albaugh <Michael.Albaugh@Qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix QHT7040 serial number checkDave Olson2007-10-09
| | | | | | | | | | | | | | | | | | | | Remove all the OEM and bringup boards, and complain and fail initialization if one is found. QHT7040 with GPIO rework (128ywwuuuu) is OK, older 112ywwuuuu is no longer supported). The check that had been added was failing both the 112 and 128 series. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Indicate a couple of chip bugs to userspaceArthur Jones2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | A couple of chip bugs in the iba6110 and in the iba6120 are not in more recent chips. This first bug swaps two of the pioavail register locations. In the second bug, the chip can sometimes forget to dma the pio avail register to memory. We indicate the presence of these bugs with runtime flags and we indicate the presence of the flags by bumping the SWMINOR. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: iba6110 rev4 no longer needs recv header overrun workaroundArthur Jones2007-10-09
| | | | | | | | | | | | | | | | | | | | iba6110 rev3 and earlier had a chip bug where the chip could overrun the recv header queue. rev4 fixed this chip bug so userspace no longer needs to workaround it. Now we only set the workaround flag for older chip versions. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Use counters in ipath_poll and cleanup interrupts in ipath_closeArthur Jones2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ipath_poll() suffered from a couple subtle bugs. Under the right conditions we could leave recv interrupts enabled on an ipath user context on close, thereby taking potentially unwanted interrupts on the next open -- this is fixed by unconditionally turning off recv interrupts on close. Also, we now use counters rather than set/clear bits which allows us to make sure we catch all interrupts at the cost of changing the semantics slightly (it's now give me all events since the last time I called poll() rather than give me all events since I called _this_ poll routine). We also added some memory barriers which may help ensure we get all notifications in a timely manner. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Remove duplicate copy of LMCRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | The LMC value was being saved by the SMA in two places. This patch cleans it up so only one copy is kept. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Add ability to set the LMC via the sysfs debugging interfaceRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | This patch adds the ability to set the LMC via a sysfs file as if the SM sent a SubnSet(PortInfo) MAD. It is useful for debugging when no SM is running. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Optimize completion queue entry insertion and pollingRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | The code to add an entry to the completion queue stored the QPN which is needed for the user level verbs view of the completion queue entry but the kernel struct ib_wc contains a pointer to the QP instead of a QPN. When the kernel polled for a completion queue entry, the QPN was lookup up and the QP pointer recovered. This patch stores the CQE differently based on whether the CQ is a kernel CQ or a user CQ thus avoiding the QPN to QP lookup overhead. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Implement IB_EVENT_QP_LAST_WQE_REACHEDRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | This patch implements the IB_EVENT_QP_LAST_WQE_REACHED event which is needed by ib_ipoib to destroy the QP when used in connected mode. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Generate flush CQE when QP is in error stateRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | Follow the IB spec. (C10-96) for post send which states that a flushed completion event should be generated for work requests posted when a QP is in the error state. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Remove redundant codeRalph Campbell2007-10-09
| | | | | | | | | | | | | | This patch removes some redundant initialization code. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Future proof eeprom checksum code (contents reading)Dave Olson2007-10-09
| | | | | | | | | | | | | | | | | | | | | | In an earlier change, the amount of data read from the flash was mistakenly limited to the size known to the current driver. This causes problems when the length is increased, and written with the new longer version; the checksum would fail because not enough data was read. Always read the full 128 byte length to prevent this. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: UC RDMA WRITE with IMMEDIATE doesn't send the immediateRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | This patch fixes a bug in the receive processing for UC RDMA WRITE with immediate which caused the last packet to be dropped. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Correctly describe workaround for TID write chip bugDave Olson2007-10-09
| | | | | | | | | | | | | | | | | | This is a comment change, only, correcting the comment to match the implemented workaround, rather than the original workaround, and clarifying why it's needed. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Remove unneeded code for ipathfsRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | The ipathfs file system is used to export binary data verses ASCII data such as through /sys. This patch removes some unneeded files since the data is available through other /sys files. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Verify host bus bandwidth to chip will not limit performanceDave Olson2007-10-09
| | | | | | | | | | | | | | | | | | | | There have been a number of issues where host bandwidth via HT or PCIe to the InfiniPath chip has been limited in some fashion (BIOS, configuration, etc.), resulting in user confusion. This check gives a clear warning that something is wrong and needs to be resolved. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Change UD to queue work requests like RC & UCRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | | | The code to post UD sends tried to process work requests at the time ib_post_send() is called without using a WQE queue. This was fine as long as HW resources were available for sending a packet. This patch changes UD to be handled more like RC and UC and shares more code. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Performance optimization for CPU differencesRalph Campbell2007-10-09
| | | | | | | | | | | | | | | | | | Different processors have different ordering restrictions for write combining. By taking advantage of this, we can eliminate some write barriers when writing to the send buffers. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: iba6110 rev4 GPIO counters supportArthur Jones2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | On iba6110 rev4, support for three more IB counters were added. The LocalLinkIntegrityError counter, the ExcessiveBufferOverrunErrors counter and support for error counting of flow control packets on an invalid VL. These counters trigger GPIO interrupts and the sw keeps track of the counts. Since we also use GPIO interrupts to signal packet reception, we need to turn off the fast interrupts, or we risk losing a GPIO interrupt. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ehca: Fix clipping of device limits to INT_MAXRoland Dreier2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing min_t(int, foo, INT_MAX) doesn't work correctly, because if foo is bigger than INT_MAX, then when treated as a signed integer, it will become negative and hence such an expression is just an elaborate NOP. Fix such cases in ehca to do min_t(unsigned, foo, INT_MAX) instead. This fixes negative reported values for max_cqe, max_pd and max_ah: Before: max_cqe: -64 max_pd: -1 max_ah: -1 After: max_cqe: 2147483647 max_pd: 2147483647 max_ah: 2147483647 Based on a bug report and fix from Anton Blanchard <anton@samba.org>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/mthca: Use mmiowb() to avoid firmware commands getting jumbled upRoland Dreier2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Firmware commands are sent to the HCA by writing multiple words to a command register block. Access to this block of registers is serialized with a mutex. However, on large SGI systems, problems were seen with multiple CPUs issuing FW commands at the same time, because the writes to the register block may be reordered within the system interconnect and reach the HCA in a different order than they were issued (even with the mutex). Fix this by adding an mmiowb() before dropping the mutex. Tested-by: Arthur Kepner <akepner@sgi.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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