xtensa: reimplement DMA API using common helpers

- keep existing functionality: don't handle attributes, don't support
  high memory;
- implement scatterlist primitives (map/unmap/sync);
- enable DMA API debug.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index e5b872b..6ce10f9 100644 (file)
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -14,6 +14,8 @@ config XTENSA
        select GENERIC_IRQ_SHOW
        select GENERIC_PCI_IOMAP
        select GENERIC_SCHED_CLOCK
+       select HAVE_DMA_API_DEBUG
+       select HAVE_DMA_ATTRS
        select HAVE_FUNCTION_TRACER
        select HAVE_IRQ_TIME_ACCOUNTING
        select HAVE_OPROFILE

diff --cc arch/xtensa/include/asm/Kbuild
Simple merge

diff --cc arch/xtensa/include/asm/device.h
Simple merge

diff --cc arch/xtensa/include/asm/dma-mapping.h
Simple merge

diff --cc arch/xtensa/kernel/pci-dma.c
Simple merge