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2011-05-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: (26 commits) arch/tile: prefer "tilepro" as the name of the 32-bit architecture compat: include aio_abi.h for aio_context_t arch/tile: cleanups for tilegx compat mode arch/tile: allocate PCI IRQs later in boot arch/tile: support signal "exception-trace" hook arch/tile: use better definitions of xchg() and cmpxchg() include/linux/compat.h: coding-style fixes tile: add an RTC driver for the Tilera hypervisor arch/tile: finish enabling support for TILE-Gx 64-bit chip compat: fixes to allow working with tile arch arch/tile: update defconfig file to something more useful tile: do_hardwall_trap: do not play with task->sighand tile: replace mm->cpu_vm_mask with mm_cpumask() tile,mn10300: add device parameter to dma_cache_sync() audit: support the "standard" <asm-generic/unistd.h> arch/tile: clarify flush_buffer()/finv_buffer() function names arch/tile: kernel-related cleanups from removing static page size arch/tile: various header improvements for building drivers arch/tile: disable GX prefetcher during cache flush arch/tile: tolerate disabling CONFIG_BLK_DEV_INITRD ...
2011-05-04arch/tile: clarify flush_buffer()/finv_buffer() function namesChris Metcalf
They are only applicable for locally-homecached memory ranges, so change their names to {flush,finv}_buffer_local(). Change inv_buffer() to just do an mf instead of any kind of fancier barrier, since you're obviously not going to be waiting for anything once the local homecache is invalidated. Fix tilepro.c network driver not to bother calling finv_buffer when stopping the EPP, but just mf after memset to ensure that it will not see any packet data after we finish stopping; use finv_buffer_remote() when doing exit-time cleanup. This also fixes a (not very interesting) generic Linux build failure where drivers/scsi/st.c declares its own flush_buffer(). Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2011-04-28net:use help function of skb_checksum_start_offset to calculate offsetShan Wei
Although these are equivalent, but the skb_checksum_start_offset() is more readable. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-10tile on-chip network driver: sync up with latest fixesChris Metcalf
Combine the "command" and "completion" locks into a single lock, on each egress queue, to improve efficiency. Support the use of 4KB pages in the "egress queue". Delete the unused "duplicate ACK compression" code. Filter "bad" (i.e. truncated) packets. Avoid corrupting "dev->napi_list", by sequentializing modifications. Deregister for incoming packets during stop, to reduce unexpected interrupts. Also, encourage active NAPI loops to complete before we disable NAPI, which would otherwise crash. Free any pending completions after shutting down LEPP. Use a single, permanently registered, IRQ handler, to avoid situations in which the IRQ handler was firing after being freed, and ignore any "unexpected" interrupts. Drop egress packets, instead of spinning, if the hardware cannot keep up, or is disconnected. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2011-03-01arch/tile: enhance existing finv_buffer_remote() routineChris Metcalf
It now takes an additional argument so it can be used to flush-and-invalidate pages that are cached using hash-for-home as well those that are cached with coherence point on a single cpu. This allows it to be used more widely for changing the coherence point of arbitrary pages when necessary. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2011-01-14netdev: tilepro: Use is_unicast_ether_addr helperTobias Klauser
Use is_unicast_ether_addr from linux/etherdevice.h instead of custom macros. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-24drivers/net/tile/: on-chip network drivers for the tile architectureChris Metcalf
This change adds the first network driver for the tile architecture, supporting the on-chip XGBE and GBE shims. The infrastructure is present for the TILE-Gx networking drivers (another three source files in the new directory) but for now the the actual tilegx sources are waiting on releasing hardware to initial customers. Note that arch/tile/include/hv/* are "upstream" headers from the Tilera hypervisor and will probably benefit less from LKML review. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>