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| author | Christian Mauderer <christian.mauderer@embedded-brains.de> | 2020-05-27 10:08:01 +0200 |
|---|---|---|
| committer | Christian Mauderer <christian.mauderer@embedded-brains.de> | 2020-07-29 11:19:14 +0200 |
| commit | beaacb5c3046a27a4835a2299fa2e9da0930dca4 (patch) | |
| tree | 8c0584218b0587fc8b47f0a4bed8f0814ab6a468 | |
| parent | rtwn_usb: Make sure buffers are cache aligned (diff) | |
| download | rtems-libbsd-beaacb5c3046a27a4835a2299fa2e9da0930dca4.tar.bz2 | |
busdma: Don't sync nocache memory on ARM
The busdma shouldn't try to flush or invalidate cache in a nocache area.
| -rw-r--r-- | rtemsbsd/rtems/rtems-kernel-bus-dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/rtemsbsd/rtems/rtems-kernel-bus-dma.c b/rtemsbsd/rtems/rtems-kernel-bus-dma.c index 4dc634f3..bda4f3d7 100644 --- a/rtemsbsd/rtems/rtems-kernel-bus-dma.c +++ b/rtemsbsd/rtems/rtems-kernel-bus-dma.c @@ -48,6 +48,8 @@ #include <machine/rtems-bsd-kernel-space.h> #include <machine/rtems-bsd-cache.h> #include <machine/rtems-bsd-bus-dma.h> +#include <bsp.h> +#include <bsp/linker-symbols.h> #include <rtems/malloc.h> @@ -400,6 +402,12 @@ bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op) uintptr_t size = map->buffer_size; uintptr_t begin = (uintptr_t) map->buffer_begin; uintptr_t end = begin + size; +#ifdef __arm__ + if (begin >= (uintptr_t)bsp_section_nocache_begin && + end <= (uintptr_t)bsp_section_nocachenoload_end) { + return; + } +#endif if ((map->flags & DMAMAP_CACHE_ALIGNED) != 0) { begin &= ~CLMASK; |