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* IB/ipath: Fix a data corruptionRalph Campbell2006-07-241-40/+36
| | | | | | | | | This patch fixes a problem where certain error packets are passed to the InfiniBand layer for processing even though the packet actually was received with an error. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [PATCH] irq-flags: misc drivers: Use the new IRQF_ constantsThomas Gleixner2006-07-021-2/+2
| | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: namespace cleanup: replace ips with ipathBryan O'Sullivan2006-07-011-11/+12
| | | | | | | | | | | | | | Remove ips namespace from infinipath drivers. This renames ips_common.h to ipath_common.h. Definitions, data structures, etc. that were not used by kernel modules have moved to user-only headers. All names including ips have been renamed to ipath. Some names have had an ipath prefix added. Signed-off-by: Christian Bell <christian.bell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: fix a bug that results in addresses near 0 being written ↵Bryan O'Sullivan2006-07-011-0/+6
| | | | | | | | | | | | | | | | | via DMA We can't tell for sure if any packets are in the infinipath receive buffer when we shut down a chip port. Normally this is taken care of by orderly shutdown, but when processes are terminated, or sending process has a bug, we can continue to receive packets. So rather than writing zero to the address registers for the closing port, we point it at a dummy memory. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: fixes to performance get counters for IB complianceBryan O'Sullivan2006-07-011-0/+17
| | | | | | | | | | | | | This patch fixes some problems uncovered during IB compliance testing to return the right values for error counters returned by the Performance Get Counters packet. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: removed redundant statementsBryan O'Sullivan2006-07-011-3/+0
| | | | | | | | | | | | | | | | The tail register read became redundant as the result of earlier receive interrupt bug fixes. Drop another unneeded register read. And another line that got duplicated. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: fix lost interrupts on HT-400Bryan O'Sullivan2006-07-011-3/+22
| | | | | | | | | | | | | | | | Do an extra check to see if in-memory tail changed while processing packets, and if so, going back through the loop again (but only once per call to ipath_kreceive()). In practice, this seems to be enough to guarantee that if we crossed the clearing of an interrupt at start of ipath_intr with a scheduled tail register update, that we'll process the "extra" packet that lost the interrupt because we cleared it just as it was about to arrive. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: fixed bug 9776 for realBryan O'Sullivan2006-07-011-11/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem was that I was updating the head register multiple times in the rcvhdrq processing loop, and setting the counter on each update. Since that meant that the tail register was ahead of head for all but the last update, we would get extra interrupts. The fix was to not write the counter value except on the last update. I also changed to update rcvhdrhead and rcvegrindexhead at most every 16 packets, if there were lots of packets in the queue (and of course, on the last packet, regardless). I also made some small cleanups while debugging this. With these changes, xeon/monty typically sees two openib packets per interrupt on sdp and ipoib, opteron/monty is about 1.25 pkts/intr. I'm seeing about 3800 Mbit/s monty/xeon, and 5000-5100 opteron/monty with netperf sdp. Netpipe doesn't show as good as that, peaking at about 4400 on opteron/monty sdp. Plain ipoib xeon is about 2100+ netperf, opteron 2900+, at 128KB Signed-off-by: olson@eng-12.pathscale.com Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: reduce overhead on receive interruptsBryan O'Sullivan2006-07-011-10/+1
| | | | | | | | | | | | | | | | | | | | | | Also count the number of interrupts where that works (fastrcvint). On any interrupt where the port0 head and tail registers are not equal, just call the ipath_kreceive code without reading the interrupt status, thus saving the approximately 0.25usec processor stall waiting for the read to return. If any other interrupt bits are set, or head==tail, take the normal path, but that has been reordered to handle read ahead of pioavail. Also no longer call ipath_kreceive() from ipath_qcheck(), because that just seems to make things worse, and isn't really buying us anything, these days. Also no longer loop in ipath_kreceive(); better to not hold things off too long (I saw many cases where we would loop 4-8 times, and handle thousands (up to 3500) in a single call). Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: memory management cleanupsBryan O'Sullivan2006-07-011-133/+92
| | | | | | | | | | | | | | | | | | | | | Made in-memory rcvhdrq tail update be in dma_alloc'ed memory, not random user or special kernel (needed for ppc, also "just the right thing to do"). Some cleanups to make unexpected link transitions less likely to produce complaints about packet errors, and also to not leave SMA packets stuck and unable to go out. A few other random debug and comment cleanups. Always init rcvhdrq head/tail registers to 0, to avoid race conditions (should have been that way some time ago). Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: use vmalloc to allocate struct ipath_devdataBryan O'Sullivan2006-07-011-7/+3
| | | | | | | | | | This is not a DMA target, so no need to use dma_alloc_coherent on it. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: enable freeze mode when shutting down deviceBryan O'Sullivan2006-07-011-1/+1
| | | | | | | | | Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: print better debug info when handling 32/64-bit DMA mask ↵Bryan O'Sullivan2006-07-011-3/+20
| | | | | | | | | | | problems Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: removed unused field ipath_kregvirt from struct ipath_devdataBryan O'Sullivan2006-07-011-5/+2
| | | | | | | | | Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: allow diags on any unitBryan O'Sullivan2006-07-011-2/+4
| | | | | | | | | | | | | | There is no longer a /dev/ipath_diag file; instead, there's /dev/ipath_diag0, 1, etc. It's still not possible to have diags run on more than one unit at a time, but that's easy to fix at some point. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] IB/ipath: update copyrights and other strings to reflect new company ↵Bryan O'Sullivan2006-07-011-4/+5
| | | | | | | | | | name Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 64bit resource: fix up printks for resources in misc driversGreg Kroah-Hartman2006-06-271-4/+4
| | | | | | | | | | This is needed if we wish to change the size of the resource structures. Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* IB/ipath: fix NULL dereference during cleanupBryan O'Sullivan2006-05-231-11/+11
| | | | | | | | Fix NULL deref due to pcidev being clobbered before dd->ipath_f_cleanup() was called. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Properly terminate PCI ID tableRoland Dreier2006-05-121-4/+3
| | | | | | | | | | | | | | | | | The ipath driver's table of PCI IDs needs a { 0, } entry at the end. This makes all of the device aliases visible to userspace so hotplug loads the module for all supported devices. Without the patch, modinfo ipath_core only shows: alias: pci:v00001FC1d0000000Dsv*sd*bc*sc*i* instead of the correct: alias: pci:v00001FC1d00000010sv*sd*bc*sc*i* alias: pci:v00001FC1d0000000Dsv*sd*bc*sc*i* Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
* IB/ipath: iterate over correct number of ports during resetBryan O'Sullivan2006-05-011-1/+1
| | | | | Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: set up 32-bit DMA mask if 64-bit setup failsBryan O'Sullivan2006-05-011-3/+13
| | | | | | | | Some systems do not set up 64-bit maps on systems with 2GB or less of memory installed, so we have to fall back to trying a 32-bit setup. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Make more names staticRoland Dreier2006-04-191-1/+1
| | | | | | Make symbols that are only used in a single source file static. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: core device driverBryan O'Sullivan2006-03-311-0/+1983
The ipath driver is a low-level driver for PathScale InfiniPath host channel adapters (HCAs) based on the HT-400 and PE-800 chips, including the InfiniPath HT-460, the small form factor InfiniPath HT-460, the InfiniPath HT-470 and the Linux Networx LS/X. The ipath_driver.c file contains much of the low-level device handling code. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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