diff options
Diffstat (limited to 'include/odp/api/spec/shared_memory.h')
| -rw-r--r-- | include/odp/api/spec/shared_memory.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/odp/api/spec/shared_memory.h b/include/odp/api/spec/shared_memory.h index 58ecaa920..6d4066f15 100644 --- a/include/odp/api/spec/shared_memory.h +++ b/include/odp/api/spec/shared_memory.h @@ -44,6 +44,14 @@ extern "C" { /** * Application SW only, no HW access + * + * @deprecated When set, application will not share the reserved memory with HW + * accelerators. However, leaving this flag to zero does not guarantee that + * the reserved memory can be accessed from HW, and thus usage of this flag is + * considered deprecated. If HW accessible memory is required, set + * ODP_SHM_HW_ACCESS instead. + * + * This flag must not be combined with ODP_SHM_HW_ACCESS. */ #define ODP_SHM_SW_ONLY 0x1 @@ -79,6 +87,17 @@ extern "C" { #define ODP_SHM_HP 0x10 /** + * Share memory with HW accelerators + * + * When set, this flag guarantees that the reserved memory is accessible + * by both CPUs and HW accelerators of the device. This may require e.g. that + * the odp_shm_reserve() call configures the memory to be accessible through + * an Input-Output Memory Management Unit (IOMMU). The reserve call will return + * failure if such configuration is not supported. + */ +#define ODP_SHM_HW_ACCESS 0x20 + +/** * Shared memory block info */ typedef struct odp_shm_info_t { |