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-rw-r--r--testsuites/sptests/spcache01/init.c348
1 files changed, 348 insertions, 0 deletions
diff --git a/testsuites/sptests/spcache01/init.c b/testsuites/sptests/spcache01/init.c
new file mode 100644
index 0000000000..9f27a797fa
--- /dev/null
+++ b/testsuites/sptests/spcache01/init.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <stdio.h>
+#include <inttypes.h>
+
+#include <rtems.h>
+#include <rtems/counter.h>
+
+#define TESTS_USE_PRINTF
+#include "tmacros.h"
+
+#define I() __asm__ volatile ("nop")
+
+#define I8() I(); I(); I(); I(); I(); I(); I(); I()
+
+#define I64() I8(); I8(); I8(); I8(); I8(); I8(); I8(); I8()
+
+#define I512() I64(); I64(); I64(); I64(); I64(); I64(); I64(); I64()
+
+CPU_STRUCTURE_ALIGNMENT static int data[1024];
+
+static void test_data_flush_and_invalidate(void)
+{
+ if (rtems_cache_get_data_line_size() > 0) {
+ rtems_interrupt_level level;
+ rtems_interrupt_lock lock = RTEMS_INTERRUPT_LOCK_INITIALIZER;
+ volatile int *vdata = &data[0];
+ int n = 32;
+ int i;
+ size_t data_size = n * sizeof(data[0]);
+
+ printf("data cache flush and invalidate test\n");
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ for (i = 0; i < n; ++i) {
+ vdata[i] = i;
+ }
+
+ rtems_cache_flush_multiple_data_lines(&data[0], data_size);
+
+ for (i = 0; i < n; ++i) {
+ rtems_test_assert(vdata[i] == i);
+ }
+
+ for (i = 0; i < n; ++i) {
+ vdata[i] = ~i;
+ }
+
+ rtems_cache_invalidate_multiple_data_lines(&data[0], data_size);
+
+ for (i = 0; i < n; ++i) {
+ rtems_test_assert(vdata[i] == i);
+ }
+
+ for (i = 0; i < n; ++i) {
+ vdata[i] = ~i;
+ }
+
+ rtems_cache_flush_multiple_data_lines(&data[0], data_size);
+ rtems_cache_invalidate_multiple_data_lines(&data[0], data_size);
+
+ for (i = 0; i < n; ++i) {
+ rtems_test_assert(vdata[i] == ~i);
+ }
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf("data cache operations by line passed the test\n");
+ } else {
+ printf(
+ "skip data cache flush and invalidate test"
+ " due to cache line size of zero\n"
+ );
+ }
+}
+
+static uint64_t do_some_work(void)
+{
+ rtems_counter_ticks a;
+ rtems_counter_ticks b;
+ rtems_counter_ticks d;
+
+ /* This gives 1024 nop instructions */
+ a = rtems_counter_read();
+ I512();
+ I512();
+ b = rtems_counter_read();
+
+ d = rtems_counter_difference(b, a);
+
+ return rtems_counter_ticks_to_nanoseconds(d);
+}
+
+static uint64_t load(void)
+{
+ rtems_counter_ticks a;
+ rtems_counter_ticks b;
+ rtems_counter_ticks d;
+ size_t i;
+ volatile int *vdata = &data[0];
+
+ a = rtems_counter_read();
+ for (i = 0; i < RTEMS_ARRAY_SIZE(data); ++i) {
+ vdata[i];
+ }
+ b = rtems_counter_read();
+
+ d = rtems_counter_difference(b, a);
+
+ return rtems_counter_ticks_to_nanoseconds(d);
+}
+
+static uint64_t store(void)
+{
+ rtems_counter_ticks a;
+ rtems_counter_ticks b;
+ rtems_counter_ticks d;
+ size_t i;
+ volatile int *vdata = &data[0];
+
+ a = rtems_counter_read();
+ for (i = 0; i < RTEMS_ARRAY_SIZE(data); ++i) {
+ vdata[i] = 0;
+ }
+ b = rtems_counter_read();
+
+ d = rtems_counter_difference(b, a);
+
+ return rtems_counter_ticks_to_nanoseconds(d);
+}
+
+static void test_timing(void)
+{
+ rtems_interrupt_level level;
+ rtems_interrupt_lock lock = RTEMS_INTERRUPT_LOCK_INITIALIZER;
+ size_t data_size = sizeof(data);
+ uint64_t d[3];
+
+ printf(
+ "data cache line size %i bytes\n",
+ rtems_cache_get_data_line_size()
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = load();
+ d[1] = load();
+ rtems_cache_flush_entire_data();
+ d[2] = load();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "load %zi bytes with flush entire data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with flushed cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = load();
+ d[1] = load();
+ rtems_cache_flush_multiple_data_lines(&data[0], sizeof(data));
+ d[2] = load();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "load %zi bytes with flush multiple data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with flushed cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = load();
+ d[1] = load();
+ rtems_cache_invalidate_multiple_data_lines(&data[0], sizeof(data));
+ d[2] = load();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "load %zi bytes with invalidate multiple data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with invalidated cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = store();
+ d[1] = store();
+ rtems_cache_flush_entire_data();
+ d[2] = store();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "store %zi bytes with flush entire data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with flushed cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = store();
+ d[1] = store();
+ rtems_cache_flush_multiple_data_lines(&data[0], sizeof(data));
+ d[2] = store();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "store %zi bytes with flush multiple data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with flushed cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = store();
+ d[1] = store();
+ rtems_cache_invalidate_multiple_data_lines(&data[0], sizeof(data));
+ d[2] = store();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "store %zi bytes with invalidate multiple data\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with invalidated cache %" PRIu64 " ns\n",
+ data_size,
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ printf(
+ "instruction cache line size %i bytes\n",
+ rtems_cache_get_instruction_line_size()
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = do_some_work();
+ d[1] = do_some_work();
+ rtems_cache_invalidate_entire_instruction();
+ d[2] = do_some_work();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "invalidate entire instruction\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with invalidated cache %" PRIu64 " ns\n",
+ d[0],
+ d[1],
+ d[2]
+ );
+
+ rtems_interrupt_lock_acquire(&lock, level);
+
+ d[0] = do_some_work();
+ d[1] = do_some_work();
+ rtems_cache_invalidate_multiple_instruction_lines(do_some_work, 4096);
+ d[2] = do_some_work();
+
+ rtems_interrupt_lock_release(&lock, level);
+
+ printf(
+ "invalidate multiple instruction\n"
+ " duration with normal cache %" PRIu64 " ns\n"
+ " duration with warm cache %" PRIu64 " ns\n"
+ " duration with invalidated cache %" PRIu64 " ns\n",
+ d[0],
+ d[1],
+ d[2]
+ );
+}
+
+static void Init(rtems_task_argument arg)
+{
+ puts("\n\n*** TEST SPCACHE 1 ***");
+
+ test_data_flush_and_invalidate();
+ test_timing();
+
+ puts("*** END OF TEST SPCACHE 1 ***");
+
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
+
+#define CONFIGURE_MAXIMUM_TASKS 1
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
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