Chris Metcalf 41bb38fc53 tile pci: enable IOMMU to support DMA for legacy devices ... 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 <cmetcalf@tilera.com>		2012-07-18 16:40:17 -04:00
..
configs	arch/tile/configs: convert to minimal configs via "make savedefconfig"	2012-03-14 14:33:16 -04:00
gxio	arch/tile: provide kernel support for the tilegx TRIO shim	2012-07-11 16:04:58 -04:00
include	tile pci: enable IOMMU to support DMA for legacy devices	2012-07-18 16:40:17 -04:00
kernel	tile pci: enable IOMMU to support DMA for legacy devices	2012-07-18 16:40:17 -04:00
kvm	virtio: expose for non-virtualization users too	2011-07-23 16:20:30 +09:30
lib	arch/tile: break out the "csum a long" function to <asm/checksum.h>	2012-07-11 16:04:57 -04:00
mm	arch/tile: enable ZONE_DMA for tilegx	2012-07-18 16:40:11 -04:00
Kbuild
Kconfig	tile pci: enable IOMMU to support DMA for legacy devices	2012-07-18 16:40:17 -04:00
Kconfig.debug	lib: consolidate DEBUG_STACK_USAGE option	2011-05-25 08:39:54 -07:00
Makefile	arch/tile: introduce GXIO IORPC framework for tilegx	2012-07-11 16:04:52 -04:00