[XEN PATCH v7 17/20] xen/arm: ffa: add ABI structs for sharing memory

[Jens Wiklander <jens.wiklander@xxxxxxxxxx>]

Adds the ABI structs used by function FFA_MEM_SHARE and friends for
sharing memory.

Signed-off-by: Jens Wiklander <jens.wiklander@xxxxxxxxxx>
---
 xen/arch/arm/tee/ffa.c | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/xen/arch/arm/tee/ffa.c b/xen/arch/arm/tee/ffa.c
index bfd378f7fcd7..94c90b252454 100644
--- a/xen/arch/arm/tee/ffa.c
+++ b/xen/arch/arm/tee/ffa.c
@@ -197,6 +197,11 @@
 #define FFA_MSG_SEND                    0x8400006EU
 #define FFA_MSG_POLL                    0x8400006AU
 
+/*
+ * Structs below ending with _1_0 are defined in FF-A-1.0-REL and
+ * struct ending with _1_1 are defined in FF-A-1.1-REL0.
+ */
+
 /* Partition information descriptor */
 struct ffa_partition_info_1_0 {
     uint16_t id;
@@ -211,6 +216,75 @@ struct ffa_partition_info_1_1 {
     uint8_t uuid[16];
 };
 
+/* Constituent memory region descriptor */
+struct ffa_address_range {
+    uint64_t address;
+    uint32_t page_count;
+    uint32_t reserved;
+};
+
+/* Composite memory region descriptor */
+struct ffa_mem_region {
+    uint32_t total_page_count;
+    uint32_t address_range_count;
+    uint64_t reserved;
+    struct ffa_address_range address_range_array[];
+};
+
+/* Memory access permissions descriptor */
+struct ffa_mem_access_perm {
+    uint16_t endpoint_id;
+    uint8_t perm;
+    uint8_t flags;
+};
+
+/* Endpoint memory access descriptor */
+struct ffa_mem_access {
+    struct ffa_mem_access_perm access_perm;
+    uint32_t region_offs;
+    uint64_t reserved;
+};
+
+/* Lend, donate or share memory transaction descriptor */
+struct ffa_mem_transaction_1_0 {
+    uint16_t sender_id;
+    uint8_t mem_reg_attr;
+    uint8_t reserved0;
+    uint32_t flags;
+    uint64_t global_handle;
+    uint64_t tag;
+    uint32_t reserved1;
+    uint32_t mem_access_count;
+    struct ffa_mem_access mem_access_array[];
+};
+
+struct ffa_mem_transaction_1_1 {
+    uint16_t sender_id;
+    uint16_t mem_reg_attr;
+    uint32_t flags;
+    uint64_t global_handle;
+    uint64_t tag;
+    uint32_t mem_access_size;
+    uint32_t mem_access_count;
+    uint32_t mem_access_offs;
+    uint8_t reserved[12];
+};
+
+/* Endpoint RX/TX descriptor */
+struct ffa_endpoint_rxtx_descriptor_1_0 {
+    uint16_t sender_id;
+    uint16_t reserved;
+    uint32_t rx_range_count;
+    uint32_t tx_range_count;
+};
+
+struct ffa_endpoint_rxtx_descriptor_1_1 {
+    uint16_t sender_id;
+    uint16_t reserved;
+    uint32_t rx_region_offs;
+    uint32_t tx_region_offs;
+};
+
 struct ffa_ctx {
     void *rx;
     const void *tx;
-- 
2.34.1