mirror of
https://github.com/genodelabs/genode.git
synced 2025-04-07 19:34:56 +00:00
288fd4e56e
This patch extends the RAM session interface with the ability to allocate DMA buffers. The client specifies the type of RAM dataspace to allocate via the new 'cached' argument of the 'Ram_session::alloc()' function. By default, 'cached' is true, which correponds to the common case and the original behavior. When setting 'cached' to 'false', core takes the precautions needed to register the memory as uncached in the page table of each process that has the dataspace attached. Currently, the support for allocating DMA buffers is implemented for Fiasco.OC only. On x86 platforms, it is generally not needed. But on platforms with more relaxed cache coherence (such as ARM), user-level device drivers should always use uncacheable memory for DMA transactions.
This directory contains ports of popular 3rd-party applications to Genode. The 'ports' repository follows the line of the 'libports' repository. For instructions about downloading and building 3rd-party applications, please refer to 'libports/README'. Dependencies from other repositories ------------------------------------ Application provided by the 'ports' repository typically expect a rich runtime environment, including shared libraries provided by the 'libports' repository. Hence, 'ports' depends on 'libports'. Furthermore, applications may require additional repositories. For example, the Arora web browser depends on the 'qt4' repository.