linux/arch/tile/include, branch v3.6

tile: gxio iorpc numbering change for TRIO interface

2012-09-24T19:11:53Z

An ABI numbering change was made in the hypervisor for Tilera's 4.1 MDE release (just shipped). It's incompatible with the previous 4.0 release ABI numbering, so we track the new numbering going forward. We plan to avoid modifying ABI numbering for these interfaces again. Signed-off-by: Chris Metcalf

Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2012-07-30T18:24:53Z

Pull treewide kbuild cleanup from Michal Marek: "Paul Bolle did a cleanup of headers in various architectures. Because the patch touch several architectures at once, it was easiest for me to apply them to the kbuild tree." * 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: Remove useless wrappers of asm-generic/rmap.h Remove useless wrappers of asm-generic/ipc.h Remove useless wrappers of asm-generic/cpumask.h

Merge branch 'kmap_atomic' of git://github.com/congwang/linux

2012-07-27T18:26:48Z

Pull final kmap_atomic cleanups from Cong Wang: "This should be the final round of cleanup, as the definitions of enum km_type finally get removed from the whole tree. The patches have been in linux-next for a long time." * 'kmap_atomic' of git://github.com/congwang/linux: pipe: remove KM_USER0 from comments vmalloc: remove KM_USER0 from comments feature-removal-schedule.txt: remove kmap_atomic(page, km_type) tile: remove km_type definitions um: remove km_type definitions asm-generic: remove km_type definitions avr32: remove km_type definitions frv: remove km_type definitions powerpc: remove km_type definitions arm: remove km_type definitions highmem: remove the deprecated form of kmap_atomic tile: remove usage of enum km_type frv: remove the second parameter of kmap_atomic_primary() jbd2: remove the second argument of kmap_atomic

tile: remove km_type definitions

2012-07-24T07:27:32Z

Signed-off-by: Cong Wang

tile: updates to pci root complex from community feedback

2012-07-18T20:54:16Z

Reviewed-by: Bjorn Helgaas Signed-off-by: Chris Metcalf

arch/tile: provide kernel support for the tilegx USB shim

2012-07-18T20:40:24Z

This change adds support for accessing the USB shim from within the kernel. Note that this change by itself does not allow the kernel to act as a host or as a device; it merely exposes the built-in on-chip hardware to the kernel. The and headers are empty at the moment because the kernel does not require any types or definitions specific to the tilegx USB shim; the generic USB core code is all we need. The headers are left in as stubs so that we don't need to modify the hypervisor header (drv_usb_host_intf.h) from upstream. Signed-off-by: Chris Metcalf

tile pci: enable IOMMU to support DMA for legacy devices

2012-07-18T20:40:17Z

This change uses the TRIO IOMMU to map the PCI DMA space and physical memory at different addresses. We also now use the dma_mapping_ops to provide support for non-PCI DMA, PCIe DMA (64-bit) and legacy PCI DMA (32-bit). We use the kernel's software I/O TLB framework (i.e. bounce buffers) for the legacy 32-bit PCI device support since there are a limited number of TLB entries in the IOMMU and it is non-trivial to handle indexing, searching, matching, etc. For 32-bit devices the performance impact of bounce buffers should not be a concern. Signed-off-by: Chris Metcalf

tilegx pci: support I/O to arbitrarily-cached pages

2012-07-18T20:40:05Z

The tilegx PCI root complex support (currently only in linux-next) is limited to pages that are homed on cached in the default manner, i.e. "hash-for-home". This change supports delivery of I/O data to pages that are cached in other ways (locally on a particular core, uncached, user-managed incoherent, etc.). A large part of the change is supporting flushing pages from cache on particular homes so that we can transition the data that we are delivering to or from the device appropriately. The new homecache_finv* routines handle this. Some changes to page_table_range_init() were also required to make the fixmap code work correctly on tilegx; it hadn't been used there before. We also remove some stub mark_caches_evicted_*() routines that were just no-ops anyway. Signed-off-by: Chris Metcalf

tile: remove unused header

2012-07-18T20:40:00Z

Nothing includes memprof.h. Nothing uses the macros it defines. It seems it is just a remnant of the proposed memprof functionality, which got dropped before the Tilera architecture got added to the tree. This header can safely be removed. Signed-off-by: Paul Bolle Signed-off-by: Chris Metcalf

arch/tile: tilegx PCI root complex support

2012-07-18T20:39:11Z

This change implements PCIe root complex support for tilegx using the kernel support layer for accessing the TRIO hardware shim. Reviewed-by: Bjorn Helgaas [changes in 07487f3] Signed-off-by: Chris Metcalf