116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
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/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-03-17 WangXiaoyao cache API unit test
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*/
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#ifndef __TEST_CACHE_AARCH64_H__
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#define __TEST_CACHE_AARCH64_H__
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#include "common.h"
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#include <cache.h>
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const char *platform_cache_not_guarantee = "Cannot guarantee cache operation works";
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/**
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* ==============================================================
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* TEST FEATURE
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* API under cache.h
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*
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* void rt_hw_icache_invalidate_range(unsigned long start_addr, int size);
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* void rt_hw_cpu_icache_invalidate(void *addr, rt_size_t size);
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* void rt_hw_cpu_dcache_clean_and_invalidate(void *addr, rt_size_t size);
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* ==============================================================
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*/
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static int _get1_const(void)
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{
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return 1;
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}
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static int _get1(void)
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{
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return 1;
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}
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static int _get2(void)
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{
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return 2;
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}
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/* hot patching codes and test if the value can be seen by icache */
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static void _test_icache_invalidate_range(void)
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{
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/* reset _get1 */
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rt_memcpy(_get1, _get1_const, _get2 - _get1);
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rt_hw_cpu_dcache_clean(_get1, _get2 - _get1);
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rt_hw_cpu_icache_invalidate(_get1, _get2 - _get1);
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uassert_true(1 == _get1());
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/* now copy _get2 to _get1 */
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rt_memcpy(_get1, _get2, _get2 - _get1);
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if (1 != _get1())
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LOG_W(platform_cache_not_guarantee);
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rt_hw_cpu_dcache_clean(_get1, _get2 - _get1);
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rt_hw_cpu_icache_invalidate(_get1, _get2 - _get1);
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__asm__ volatile("isb");
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uassert_true(2 == _get1());
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LOG_I("%s ok", __func__);
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}
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/* due to hardware feature of cortex-a, we should done this on 2 separated cpu */
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static void _test_dcache_clean_and_invalidate(void)
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{
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const size_t padding = 1024 * 2;
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const size_t buf_sz = ARCH_PAGE_SIZE * 2;
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volatile char *remap_nocache;
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char *page = rt_pages_alloc(rt_page_bits(buf_sz));
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uassert_true(!!page);
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rt_memset(page, 0xab, buf_sz);
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rt_hw_cpu_dcache_invalidate(page, buf_sz);
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int _outdate_flag = 0;
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if (memtest(page, 0xab, buf_sz))
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_outdate_flag = 1;
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/* after ioremap, we can access system memory to verify outcome */
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remap_nocache = rt_ioremap(page + PV_OFFSET, buf_sz);
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rt_hw_cpu_dcache_clean(page + padding, ARCH_PAGE_SIZE);
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memtest(remap_nocache + padding, 0xab, ARCH_PAGE_SIZE);
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if (!_outdate_flag)
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LOG_W(platform_cache_not_guarantee);
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else
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LOG_I("%s ok", __func__);
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rt_pages_free(page, 0);
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rt_iounmap(remap_nocache);
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}
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static rt_err_t utest_tc_init(void)
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{
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return RT_EOK;
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}
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static rt_err_t utest_tc_cleanup(void)
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{
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return RT_EOK;
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}
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static void testcase(void)
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{
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/* todo: format API under cache.h first */
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UTEST_UNIT_RUN(_test_icache_invalidate_range);
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UTEST_UNIT_RUN(_test_dcache_clean_and_invalidate);
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}
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UTEST_TC_EXPORT(testcase, "testcases.libcpu.cache", utest_tc_init, utest_tc_cleanup, 10);
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#endif /* __TEST_CACHE_AARCH64_H__ */
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