pvmfw: Refactor pKVM HVCs
Instead of assuming that pKVM is the only hypervisor that pvmfw will
run on, introduce a new module to host the back-end interfaces and
clarify that the HVCs we currently have are pKVM-specific.
Note: no functional change intended.
Bug: 271493784
Test: TH
Change-Id: Ie96556afbdff585a87319046e3b0dc9bf00b87f9
diff --git a/pvmfw/src/hypervisor.rs b/pvmfw/src/hypervisor.rs
new file mode 100644
index 0000000..e06d809
--- /dev/null
+++ b/pvmfw/src/hypervisor.rs
@@ -0,0 +1,46 @@
+// Copyright 2023, The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Wrappers around hypervisor back-ends.
+
+use crate::hvc;
+use crate::smccc;
+
+pub fn hyp_meminfo() -> smccc::Result<u64> {
+ hvc::kvm_hyp_meminfo()
+}
+
+pub fn mem_share(base_ipa: u64) -> smccc::Result<()> {
+ hvc::kvm_mem_share(base_ipa)
+}
+
+pub fn mem_unshare(base_ipa: u64) -> smccc::Result<()> {
+ hvc::kvm_mem_unshare(base_ipa)
+}
+
+pub fn mmio_guard_info() -> smccc::Result<u64> {
+ hvc::kvm_mmio_guard_info()
+}
+
+pub fn mmio_guard_enroll() -> smccc::Result<()> {
+ hvc::kvm_mmio_guard_enroll()
+}
+
+pub fn mmio_guard_map(ipa: u64) -> smccc::Result<()> {
+ hvc::kvm_mmio_guard_map(ipa)
+}
+
+pub fn mmio_guard_unmap(ipa: u64) -> smccc::Result<()> {
+ hvc::kvm_mmio_guard_unmap(ipa)
+}