@@ -26,6 +26,8 @@
| ((fn) & GH_CALL_FUNCTION_NUM_MASK))
#define GH_HYPERCALL_HYP_IDENTIFY GH_HYPERCALL(0x0000)
+#define GH_HYPERCALL_MSGQ_SEND GH_HYPERCALL(0x001B)
+#define GH_HYPERCALL_MSGQ_RECV GH_HYPERCALL(0x001C)
/**
* gh_hypercall_get_uid() - Returns a UID when running under a Gunyah hypervisor.
@@ -67,5 +69,36 @@ void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identi
}
EXPORT_SYMBOL_GPL(gh_hypercall_hyp_identify);
+int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_SEND, capid, size, buff, tx_flags, 0, &res);
+
+ if (res.a0)
+ return res.a0;
+
+ *ready = res.a1;
+
+ return res.a0;
+}
+EXPORT_SYMBOL_GPL(gh_hypercall_msgq_send);
+
+int gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, bool *ready)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_RECV, capid, buff, size, 0, &res);
+
+ if (res.a0)
+ return res.a0;
+
+ *recv_size = res.a1;
+ *ready = res.a2;
+
+ return res.a0;
+}
+EXPORT_SYMBOL_GPL(gh_hypercall_msgq_recv);
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Gunyah Hypervisor Hypercalls");
@@ -107,4 +107,9 @@ struct gh_hypercall_hyp_identify_resp {
void gh_hypercall_get_uid(u32 *uid);
void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity);
+#define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH BIT(0)
+
+int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready);
+int gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, bool *ready);
+
#endif
Add hypercalls to send and receive messages on a Gunyah message queue. Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> --- arch/arm64/gunyah/hypercall.c | 33 +++++++++++++++++++++++++++++++++ include/asm-generic/gunyah.h | 5 +++++ 2 files changed, 38 insertions(+)