Linux-generic implementation of the function returning a DMA mapping
descriptor for an allocated shared memory block.
Signed-off-by: Christophe Milard <christophe.mil...@linaro.org>
---
platform/linux-generic/odp_shared_memory.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/platform/linux-generic/odp_shared_memory.c
b/platform/linux-generic/odp_shared_memory.c
index ab48dda..6ef89c8 100644
--- a/platform/linux-generic/odp_shared_memory.c
+++ b/platform/linux-generic/odp_shared_memory.c
@@ -13,6 +13,7 @@
#include <odp/align.h>
#include <odp/system_info.h>
#include <odp/debug.h>
+#include <odp_dma_internal.h>
#include <odp_debug_internal.h>
#include <odp_align_internal.h>
#include <odp/config.h>
@@ -363,6 +364,31 @@ int odp_shm_info(odp_shm_t shm, odp_shm_info_t *info)
return 0;
}
+odp_dma_map_t odp_shm_get_dma_map(odp_shm_t shm)
+{
+ odp_shm_block_t *block;
+ uint32_t i;
+ dma_map_t *dma_map;
+
+ i = from_handle(shm);
+
+ if (i > (ODP_CONFIG_SHM_BLOCKS - 1))
+ return ODP_DMA_REGION_INVALID;
+
+ block = &odp_shm_tbl->block[i];
+ if (!(block->flags & ODP_SHM_DMA))
+ return ODP_DMA_REGION_INVALID;
+
+ dma_map = _odp_dma_map_alloc();
+ if (odp_unlikely(dma_map == NULL))
+ return ODP_DMA_REGION_INVALID;
+
+ dma_map->addr = block->addr;
+ dma_map->dma_addr = (odp_dma_addr_t)block->addr;
+ dma_map->size = block->size;
+
+ return (odp_dma_map_t)dma_map;
+}
void odp_shm_print_all(void)
{
--
2.1.4
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