test(spm): tests for RXTX_MAP/RXTX_UNMAP
Tests to check that RXTX_MAP and RXTX_UNMAP properly unmap/map the RX
and TX pages from the NWd stage 2 page tables.
Specifically:
* RXTX_MAP should fail when using secure memory
* RXTX_MAP should fail when using non-secure memory outside the regions
specified in SPMC nodes
* Memory sharing functions (lend, share, donate) should fail when using
memory that has been mapped by RXTX_MAP
* RXTX_UNMAP should fail when using different VM IDs
* Forwarded RXTX_MAP should succeed when the region is not mapped
* Two consecutive forwarded RXTX_MAPs should succeed when the regions
don't overlap and the endpoint IDs are different
* Forwarded RXTX_MAP should fail when the region is already mapped
* Memory sharing functions (lend, share, donate) should fail when using
memory that has been mapped by forwarded RXTX_MAP
Change-Id: I006681ab54f5ff602e862ae09438d0d174c8d0b0
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 0f19827..3ae43d2 100644
--- a/include/runtime_services/ffa_helpers.h
+++ b/include/runtime_services/ffa_helpers.h
@@ -497,6 +497,34 @@
ffa_memory_receiver_flags_t flags;
};
+/**
+ * Endpoint RX/TX descriptor, as defined by Table 13.27 in FF-A v1.1 EAC0.
+ * It's used by the Hypervisor to describe the RX/TX buffers mapped by a VM
+ * to the SPMC, in order to allow indirect messaging.
+ */
+struct ffa_endpoint_rxtx_descriptor {
+ ffa_id_t endpoint_id;
+ uint16_t reserved;
+
+ /*
+ * 8-byte aligned offset from the base address of this descriptor to the
+ * `ffa_composite_memory_region` describing the RX buffer.
+ */
+ uint32_t rx_offset;
+
+ /*
+ * 8-byte aligned offset from the base address of this descriptor to the
+ * `ffa_composite_memory_region` describing the TX buffer.
+ */
+ uint32_t tx_offset;
+
+ /* Pad to align on 16-byte boundary. */
+ uint32_t pad;
+};
+
+_Static_assert(sizeof(struct ffa_endpoint_rxtx_descriptor) == 16,
+ "ffa_endpoint_rx_tx_descriptor must be 16 bytes wide");
+
/** Flags to control the behaviour of a memory sharing transaction. */
typedef uint32_t ffa_memory_region_flags_t;
@@ -759,6 +787,7 @@
struct ffa_value ffa_partition_info_get(const struct ffa_uuid uuid);
struct ffa_value ffa_rx_release(void);
struct ffa_value ffa_rxtx_map(uintptr_t send, uintptr_t recv, uint32_t pages);
+struct ffa_value ffa_rxtx_unmap_with_id(uint32_t id);
struct ffa_value ffa_rxtx_unmap(void);
struct ffa_value ffa_mem_donate(uint32_t descriptor_length,
uint32_t fragment_length);
@@ -800,6 +829,14 @@
ffa_memory_receiver_flags_t flags,
struct ffa_memory_access_impdef *impdef);
+void ffa_endpoint_rxtx_descriptor_init(
+ struct ffa_endpoint_rxtx_descriptor *desc, ffa_id_t endpoint_id,
+ void *rx_address, void *tx_address);
+
+struct ffa_value ffa_rxtx_map_forward(
+ struct ffa_endpoint_rxtx_descriptor *desc, ffa_id_t endpoint_id,
+ void *rx_address, void *tx_address);
+
#endif /* __ASSEMBLY__ */
#endif /* FFA_HELPERS_H */