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* vmeUniverse/README.porting, vmeUniverse/README.universe: updated, added more information for BSP implementors. * vmeUniverse/VMEDMA.h (added): VME DMA API definition. * vmeUniverse/bspVmeDmaList.h (added), vmeUniverse/bspVmeDmaListP.h (added), * vmeUniverse/bspVmeDmaList.c (added): Driver-independent code for linked-list DMA (public + private headers, implementation). * vmeUniverse/vmeUniverseDMA.h (added), vmeUniverse/vmeTsi148DMA.h (added): interface to new DMA features of drivers. * vmeUniverse/vme_amd_defs.h: Added definition for data-width hint bits (VME_MODE_DBWxx). * vmeUniverse/vmeTsi148.c: added DMA support. Added support for data-width hint/modifier bits. * vmeUniverse/vmeUniverse.c, vmeUniverse/vmeUniverse.h: Added support for data-width hint/modifier bits. Added support for xxx_BLT, xxx_MBLT address modifiers. Restrict DBW to 32 in non-MBLT modes (except single-beat; a comment is in README.universe). Updated DMA support to implement new VMEDMA.h API. Added support for non-incrementing VME addresses. Restrict data width to 32 for single-beat AMs when the universe would use MBLT for DMA.