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kernel-open/nvidia-uvm/uvm_test_rng.h

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+/*******************************************************************************
+    Copyright (c) 2015 NVIDIA Corporation
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to
+    deal in the Software without restriction, including without limitation the
+    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+    sell copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+        The above copyright notice and this permission notice shall be
+        included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+
+*******************************************************************************/
+
+#ifndef __UVM_TEST_RNG_H__
+#define __UVM_TEST_RNG_H__
+
+#include "uvm_test_ioctl.h"
+#include "uvm_linux.h"
+
+// Seed-able RNG for generating test data
+
+typedef struct
+{
+    unsigned int z;
+    unsigned int w;
+    unsigned int jsr;
+    unsigned int jcong;
+} uvm_test_rng_t;
+
+void uvm_test_rng_init(uvm_test_rng_t *rng, NvU32 seed);
+
+// Fill the input buffer with random data
+void uvm_test_rng_memset(uvm_test_rng_t *rng, void *ptr, size_t size);
+
+// Uniform distribution
+
+NvU32  uvm_test_rng_32(uvm_test_rng_t *rng);
+NvU64  uvm_test_rng_64(uvm_test_rng_t *rng);
+NvUPtr uvm_test_rng_ptr(uvm_test_rng_t *rng);
+
+NvU32  uvm_test_rng_range_32(uvm_test_rng_t *rng, NvU32 lo, NvU32 hi);
+NvU64  uvm_test_rng_range_64(uvm_test_rng_t *rng, NvU64 lo, NvU64 hi);
+NvUPtr uvm_test_rng_range_ptr(uvm_test_rng_t *rng, NvUPtr lo, NvUPtr hi);
+
+// Logarithmic distribution
+
+NvU64 uvm_test_rng_log64(uvm_test_rng_t *rng);
+NvU64 uvm_test_rng_range_log64(uvm_test_rng_t *rng, NvU64 lo, NvU64 hi);
+
+NV_STATUS uvm_test_rng_sanity(UVM_TEST_RNG_SANITY_PARAMS *params, struct file *file);
+
+#endif // __UVM_TEST_RNG_H__