amdgpu: add VM test to exercise max/min address space

Make sure the kernel doesn't crash if we map something at the minimum/maximum address.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>

diff --git a/tests/amdgpu/vm_tests.c b/tests/amdgpu/vm_tests.c
index fada298..69bc468 100644 (file)
--- a/tests/amdgpu/vm_tests.c
+++ b/tests/amdgpu/vm_tests.c
@@ -33,6 +33,7 @@ static  uint32_t  minor_version;
 
 static void amdgpu_vmid_reserve_test(void);
 static void amdgpu_vm_unaligned_map(void);
+static void amdgpu_vm_mapping_test(void);
 
 CU_BOOL suite_vm_tests_enable(void)
 {
@@ -85,6 +86,7 @@ int suite_vm_tests_clean(void)
 CU_TestInfo vm_tests[] = {
        { "resere vmid test",  amdgpu_vmid_reserve_test },
        { "unaligned map",  amdgpu_vm_unaligned_map },
+       { "vm mapping test",  amdgpu_vm_mapping_test },
        CU_TEST_INFO_NULL,
 };
 
@@ -208,5 +210,46 @@ static void amdgpu_vm_unaligned_map(void)
 
 error_va_alloc:
        amdgpu_bo_free(buf_handle);
+}
+
+static void amdgpu_vm_mapping_test(void)
+{
+       struct amdgpu_bo_alloc_request req = {0};
+       struct drm_amdgpu_info_device dev_info;
+       const uint64_t size = 4096;
+       amdgpu_bo_handle buf;
+       uint64_t addr;
+       int r;
+
+       req.alloc_size = size;
+       req.phys_alignment = 0;
+       req.preferred_heap = AMDGPU_GEM_DOMAIN_GTT;
+       req.flags = 0;
+
+       r = amdgpu_bo_alloc(device_handle, &req, &buf);
+       CU_ASSERT_EQUAL(r, 0);
+
+       r = amdgpu_query_info(device_handle, AMDGPU_INFO_DEV_INFO,
+                             sizeof(dev_info), &dev_info);
+       CU_ASSERT_EQUAL(r, 0);
+
+       addr = dev_info.virtual_address_offset;
+       r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP);
+       CU_ASSERT_EQUAL(r, 0);
+
+       addr = dev_info.virtual_address_max - size;
+       r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP);
+       CU_ASSERT_EQUAL(r, 0);
+
+       if (dev_info.high_va_offset) {
+               addr = dev_info.high_va_offset;
+               r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP);
+               CU_ASSERT_EQUAL(r, 0);
+
+               addr = dev_info.high_va_max - size;
+               r = amdgpu_bo_va_op(buf, 0, size, addr, 0, AMDGPU_VA_OP_MAP);
+               CU_ASSERT_EQUAL(r, 0);
+       }
 
+       amdgpu_bo_free(buf);
 }