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0339318572
This patch extends the 'Platform_session::alloc_dma_buffer' interface with a 'Cache' argument that corresponds to the argument accepted by 'Ram_allocator::alloc', which is used by the platform driver under the hood. Since the x86 platform driver used to be hardwired to allocate DMA buffers as UNCACHED, I adjusted all drivers by specifying the UNCACHED argument. Right now, this is needed as a hint for core to steer the allocation of I/O page tables. Once we eliminate the need for such hints (by introducing an explicit 'Region_map::attach_dma' operation), we can revisit the drivers individually because cached DMA buffers should generally be fine on the x86 architecture. Issue #2243 |
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| .. | ||
| imx | ||
| imx6 | ||
| imx8 | ||
| imx53 | ||
| pl180 | ||
| rpi | ||
| adma2.cc | ||
| adma2.h | ||
| benchmark.h | ||
| driver_base.h | ||
| main.cc | ||
| sd_card.h | ||
| target.inc | ||