| 7d7632add8dd99f68b21546efff08a5a162de184 |
|
07-Mar-2014 |
Mike Marciniszyn <mike.marciniszyn@intel.com> |
IB/qib: Modify software pma counters to use percpu variables
The counters, unicast_xmit, unicast_rcv, multicast_xmit, multicast_rcv
are now maintained as percpu variables.
The mad code is modified to add a z_ latch so that the percpu counters
monotonically increase with appropriate adjustments in the reset,
read logic to maintain the z_ latch.
This patch also corrects the fact the unitcast_xmit wasn't handled
at all for UC and RC QPs.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| 1ed88dd7d0b361e677b2690f573e5c274bb25c87 |
|
07-Mar-2014 |
Mike Marciniszyn <mike.marciniszyn@intel.com> |
IB/qib: Add percpu counter replacing qib_devdata int_counter
This patch replaces the dd->int_counter with a percpu counter.
The maintanance of qib_stats.sps_ints and int_counter are
combined into the new counter.
There are two new functions added to read the counter:
- qib_int_counter (for a particular qib_devdata)
- qib_sps_ints (for all HCAs)
A z_int_counter is added to allow the interrupt detection logic
to determine if interrupts have occured since z_int_counter
was "reset".
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| 8469ba39a6b77917e8879680aed17229bf72f263 |
|
31-May-2013 |
Mike Marciniszyn <mike.marciniszyn@intel.com> |
IB/qib: Add DCA support
This patch adds DCA cache warming for systems that support DCA.
The code uses cpu affinity notification to react to an affinity change
from a user mode program like irqbalance and (re-)program the chip
accordingly. This notification avoids reading the current cpu on every
interrupt.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
[ Add Kconfig dependency on SMP && GENERIC_HARDIRQS to avoid failure to
build due to undefined struct irq_affinity_notify. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| e2eed58b4fbfe7cd59d0c9d7bec48fcfa3b2117a |
|
14-Mar-2013 |
Vinit Agnihotri <vinit.abhay.agnihotri@intel.com> |
IB/qib: change QLogic to Intel
These changes modify the qib driver as part of acquiring
the InfiniBand assets of QLogic.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Vinit Agnihotri <vinit.abhay.agnihotri@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| 7fac33014f54c26bb1b1b4282b27c7988116d639 |
|
19-Jul-2012 |
Mike Marciniszyn <mike.marciniszyn@intel.com> |
IB/qib: checkpatch fixes
Elminate some simple_strto* usage.
checkpatch also noted pr_ conversations, which have been done as
recommended. The pr_fmt() define is used to shorten line length.
Other multi-line string warnings are also elmininated.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| bb77a077232e78476d7bc39c080f9e6685cbfd3c |
|
07-May-2012 |
Mike Marciniszyn <mike.marciniszyn@intel.com> |
IB/qib: Optimize pio ack buffer allocation
This patch optimizes pio buffer allocation in the kernel.
For qib, kernel pio buffers are used for sending acks. The code to
allocate the buffer would always start at 0 until it found a buffer.
This means that an average of 64 comparisions were done on each
allocate, since the busy bit won't be cleared until the bits are
refreshed when buffers are exhausted.
This patch adds two new fields in the devdata struct, last_pio and
min_kernel_pio. last_pio is the last buffer that was allocated.
min_kernel_pio is the lowest potential available buffer.
min_kernel_pio is modifed as contexts are allocated and deallocted.
Reviewed-by: Ramkrishna Vepa <ramkrishna.vepa@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
|
| 0f3696eb21ef39b7bb7ea7d0160e925904309281 |
|
09-Jan-2012 |
Julia Lawall <julia.lawall@lip6.fr> |
IB/qib: Use GFP_ATOMIC when locks are held
alloc_dummy_hdrq() is called with locks held and thus should not use
GFP_KERNEL.
The semantic patch that makes this report is available in
scripts/coccinelle/locks/call_kern.cocci.
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
|
| eddfb675256f49d14e8c5763098afe3eb2c93701 |
|
23-Dec-2011 |
Ram Vepa <ram.vepa@qlogic.com> |
IB/qib: Fix a possible data corruption when receiving packets
Prevent a receive data corruption by ensuring that the write to update
the rcvhdrheadn register to generate an interrupt is at the very end
of the receive processing.
Signed-off-by: Ramkrishna Vepa <ram.vepa@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
|
| 9e1c0e43257b6df1ef012dd37c3f0f93b1ee47af |
|
23-Sep-2011 |
Mike Marciniszyn <mike.marciniszyn@qlogic.com> |
IB/qib: Eliminate divide/mod in converting idx to egr buf pointer
The context init now saves a shift from rcvegrbufs_perchunk
rcvegrbufs_perchunk_shift using ilog2. A BUG_ON() protects the
power of 2 assumption.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
|
| e9c549998dc24209847007e1f209f3b6c88d21ba |
|
27-Apr-2011 |
Lucas De Marchi <lucas.demarchi@profusion.mobi> |
Revert wrong fixes for common misspellings
These changes were incorrectly fixed by codespell. They were now
manually corrected.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
|
| 25985edcedea6396277003854657b5f3cb31a628 |
|
31-Mar-2011 |
Lucas De Marchi <lucas.demarchi@profusion.mobi> |
Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
|
| 19ede2e422496b2a064b9b22823c6afb66ff927b |
|
11-Jan-2011 |
Mike Marciniszyn <mike.marciniszyn@qlogic.com> |
IB/qib: Fix interrupt mitigation
For SusieQ we need to write to the interrupt timer register before
updating the header queue head with interrupt count. This is to
ensure that the timer is enabled properly and a receive available
interrupt is delivered. Otherwise this interrupt can be lost if the
receiver header/eager queues are full before the timer is enabled.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
|
| 2d757a7ce06abb4afe5b3002d4cdc40e47d7facc |
|
18-Jun-2010 |
Ralph Campbell <ralph.campbell@qlogic.com> |
IB/qib: Clear 6120 hardware error register
The hardware error register needs to be cleared or another interrupt
will be generated, thus causing an infinite loop. This is a
regression introduced when removing debug output.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
|
| 7e3a1f4ab1a550dd6cf62a23aabedbad0d23e2d7 |
|
25-May-2010 |
Ralph Campbell <ralph.campbell@qlogic.com> |
IB/qib: Fix undefined symbol error when CONFIG_PCI_MSI=n
This patch fixes a compile error saying qib_init_iba6120_funcs() is
undefined when CONFIG_PCI_MSI is not defined. Thanks to Randy Dunlap
<randy.dunlap@oracle.com> for finding this and suggesting the fix.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
|
| f931551bafe1f10ded7f5282e2aa162c267a2e5d |
|
24-May-2010 |
Ralph Campbell <ralph.campbell@qlogic.com> |
IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters
Add a low-level IB driver for QLogic PCIe adapters.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
|