Split up the current test into several helpers that will be useful to
subsequent test cases added to the PSCI test suite.
Signed-off-by: Oliver Upton <oupton@xxxxxxxxxx>
Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
---
.../testing/selftests/kvm/aarch64/psci_test.c | 97 ++++++++++++-------
1 file changed, 60 insertions(+), 37 deletions(-)
diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c
index fe1d5d343a2f..535130d5e97f 100644
--- a/tools/testing/selftests/kvm/aarch64/psci_test.c
+++ b/tools/testing/selftests/kvm/aarch64/psci_test.c
@@ -45,21 +45,6 @@ static uint64_t psci_affinity_info(uint64_t target_affinity,
return res.a0;
}
-static void guest_main(uint64_t target_cpu)
-{
- GUEST_ASSERT(!psci_cpu_on(target_cpu, CPU_ON_ENTRY_ADDR, CPU_ON_CONTEXT_ID));
- uint64_t target_state;
-
- do {
- target_state = psci_affinity_info(target_cpu, 0);
-
- GUEST_ASSERT((target_state == PSCI_0_2_AFFINITY_LEVEL_ON) ||
- (target_state == PSCI_0_2_AFFINITY_LEVEL_OFF));
- } while (target_state != PSCI_0_2_AFFINITY_LEVEL_ON);
-
- GUEST_DONE();
-}
-
static void vcpu_power_off(struct kvm_vm *vm, uint32_t vcpuid)
{
struct kvm_mp_state mp_state = {
@@ -69,12 +54,10 @@ static void vcpu_power_off(struct kvm_vm *vm, uint32_t vcpuid)
vcpu_set_mp_state(vm, vcpuid, &mp_state);
}
-int main(void)
+static struct kvm_vm *setup_vm(void *guest_code)
{
- uint64_t target_mpidr, obs_pc, obs_x0;
struct kvm_vcpu_init init;
struct kvm_vm *vm;
- struct ucall uc;
vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR);
kvm_vm_elf_load(vm, program_invocation_name);
@@ -83,31 +66,28 @@ int main(void)
vm_ioctl(vm, KVM_ARM_PREFERRED_TARGET, &init);
init.features[0] |= (1 << KVM_ARM_VCPU_PSCI_0_2);
- aarch64_vcpu_add_default(vm, VCPU_ID_SOURCE, &init, guest_main);
- aarch64_vcpu_add_default(vm, VCPU_ID_TARGET, &init, guest_main);
+ aarch64_vcpu_add_default(vm, VCPU_ID_SOURCE, &init, guest_code);
+ aarch64_vcpu_add_default(vm, VCPU_ID_TARGET, &init, guest_code);
- /*
- * make sure the target is already off when executing the test.
- */
- vcpu_power_off(vm, VCPU_ID_TARGET);
+ return vm;
+}
- get_reg(vm, VCPU_ID_TARGET, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &target_mpidr);
- vcpu_args_set(vm, VCPU_ID_SOURCE, 1, target_mpidr & MPIDR_HWID_BITMASK);
- vcpu_run(vm, VCPU_ID_SOURCE);
+static void enter_guest(struct kvm_vm *vm, uint32_t vcpuid)
+{
+ struct ucall uc;
- switch (get_ucall(vm, VCPU_ID_SOURCE, &uc)) {
- case UCALL_DONE:
- break;
- case UCALL_ABORT:
+ vcpu_run(vm, vcpuid);
+ if (get_ucall(vm, vcpuid, &uc) == UCALL_ABORT)
TEST_FAIL("%s at %s:%ld", (const char *)uc.args[0], __FILE__,
uc.args[1]);
- break;
- default:
- TEST_FAIL("Unhandled ucall: %lu", uc.cmd);
- }
+}
+
+static void assert_vcpu_reset(struct kvm_vm *vm, uint32_t vcpuid)
+{
+ uint64_t obs_pc, obs_x0;
- get_reg(vm, VCPU_ID_TARGET, ARM64_CORE_REG(regs.pc), &obs_pc);
- get_reg(vm, VCPU_ID_TARGET, ARM64_CORE_REG(regs.regs[0]), &obs_x0);
+ get_reg(vm, vcpuid, ARM64_CORE_REG(regs.pc), &obs_pc);
+ get_reg(vm, vcpuid, ARM64_CORE_REG(regs.regs[0]), &obs_x0);
TEST_ASSERT(obs_pc == CPU_ON_ENTRY_ADDR,
"unexpected target cpu pc: %lx (expected: %lx)",
@@ -115,7 +95,50 @@ int main(void)
TEST_ASSERT(obs_x0 == CPU_ON_CONTEXT_ID,
"unexpected target context id: %lx (expected: %lx)",
obs_x0, CPU_ON_CONTEXT_ID);
+}
+
+static void guest_test_cpu_on(uint64_t target_cpu)
+{
+ uint64_t target_state;
+
+ GUEST_ASSERT(!psci_cpu_on(target_cpu, CPU_ON_ENTRY_ADDR, CPU_ON_CONTEXT_ID));
+
+ do {
+ target_state = psci_affinity_info(target_cpu, 0);
+
+ GUEST_ASSERT((target_state == PSCI_0_2_AFFINITY_LEVEL_ON) ||
+ (target_state == PSCI_0_2_AFFINITY_LEVEL_OFF));
+ } while (target_state != PSCI_0_2_AFFINITY_LEVEL_ON);
+
+ GUEST_DONE();
+}
+
+static void host_test_cpu_on(void)
+{
+ uint64_t target_mpidr;
+ struct kvm_vm *vm;
+ struct ucall uc;
+
+ vm = setup_vm(guest_test_cpu_on);
+
+ /*
+ * make sure the target is already off when executing the test.
+ */
+ vcpu_power_off(vm, VCPU_ID_TARGET);
+
+ get_reg(vm, VCPU_ID_TARGET, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &target_mpidr);
+ vcpu_args_set(vm, VCPU_ID_SOURCE, 1, target_mpidr & MPIDR_HWID_BITMASK);
+ enter_guest(vm, VCPU_ID_SOURCE);
+
+ if (get_ucall(vm, VCPU_ID_SOURCE, &uc) != UCALL_DONE)
+ TEST_FAIL("Unhandled ucall: %lu", uc.cmd);
+ assert_vcpu_reset(vm, VCPU_ID_TARGET);
kvm_vm_free(vm);
+}
+
+int main(void)
+{
+ host_test_cpu_on();
return 0;
}
--
2.35.1.473.g83b2b277ed-goog
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