feat(memory share): support sending fragmented messages.
Updates `memory_init_and_send` to allow sending memory share messages
across multiple fragments.
Tests for this functionality will be added in the next commit.
Change-Id: I6a47735415a8fed1d15322499f1d08cc3e1fd6a2
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
diff --git a/include/runtime_services/ffa_helpers.h b/include/runtime_services/ffa_helpers.h
index f265fe8..3f760fa 100644
--- a/include/runtime_services/ffa_helpers.h
+++ b/include/runtime_services/ffa_helpers.h
@@ -433,10 +433,10 @@
_Static_assert(sizeof(ffa_memory_attributes_t) == sizeof(uint16_t),
"ffa_memory_attributes_t must be 2 bytes wide");
-#define FFA_MEMORY_HANDLE_ALLOCATOR_MASK \
- ((ffa_memory_handle_t)(UINT64_C(1) << 63))
-#define FFA_MEMORY_HANDLE_ALLOCATOR_HYPERVISOR \
- ((ffa_memory_handle_t)(UINT64_C(1) << 63))
+#define FFA_MEMORY_HANDLE_ALLOCATOR_MASK UINT64_C(1)
+#define FFA_MEMORY_HANDLE_ALLOCATOR_SHIFT 63U
+#define FFA_MEMORY_HANDLE_ALLOCATOR_HYPERVISOR UINT64_C(1)
+#define FFA_MEMORY_HANDLE_ALLOCATOR_SPMC UINT64_C(0)
#define FFA_MEMORY_HANDLE_INVALID (~UINT64_C(0))
/**
@@ -608,6 +608,16 @@
return ffa_assemble_handle(r.arg2, r.arg3);
}
+static inline ffa_memory_handle_t ffa_frag_handle(struct ffa_value r)
+{
+ return ffa_assemble_handle(r.arg1, r.arg2);
+}
+
+static inline ffa_id_t ffa_frag_sender(struct ffa_value args)
+{
+ return (args.arg4 >> 16) & 0xffff;
+}
+
/**
* Gets the `ffa_composite_memory_region` for the given receiver from an
* `ffa_memory_region`, or NULL if it is not valid.
@@ -660,6 +670,12 @@
enum ffa_memory_shareability shareability, uint32_t *total_length,
uint32_t *fragment_length);
+uint32_t ffa_memory_fragment_init(
+ struct ffa_memory_region_constituent *fragment,
+ size_t fragment_max_size,
+ const struct ffa_memory_region_constituent constituents[],
+ uint32_t constituent_count, uint32_t *fragment_length);
+
static inline ffa_id_t ffa_dir_msg_dest(struct ffa_value val) {
return (ffa_id_t)val.arg1 & U(0xFFFF);
}
@@ -711,6 +727,10 @@
uint32_t fragment_length);
struct ffa_value ffa_mem_relinquish(void);
struct ffa_value ffa_mem_reclaim(uint64_t handle, uint32_t flags);
+struct ffa_value ffa_mem_frag_rx(ffa_memory_handle_t handle,
+ uint32_t fragment_length);
+struct ffa_value ffa_mem_frag_tx(ffa_memory_handle_t handle,
+ uint32_t fragment_length);
struct ffa_value ffa_notification_bitmap_create(ffa_id_t vm_id,
ffa_vcpu_count_t vcpu_count);
struct ffa_value ffa_notification_bitmap_destroy(ffa_id_t vm_id);