tests: Introduce i915 directory

We can already move all the tests with distinct prefixes: gem_, gen3_
and i915_.

pm_ and drv_ tests will follow in batches, so we can do the
adjustments in the reporting/filtering layer of the CI system.

v2: Fix test-list.txt generation with meson
v3: Fix docs build (Petri)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>
Tested-by: Petri Latvala <petri.latvala@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 239 insertions, 0 deletions

diff --git a/tests/i915/gem_tiled_swapping.c b/tests/i915/gem_tiled_swapping.c
new file mode 100644
index 00000000..dce66806
--- /dev/null
+++ b/tests/i915/gem_tiled_swapping.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright © 2011 Intel 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 (including the next
+ * paragraph) 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.
+ *
+ * Authors:
+ *    Daniel Vetter <daniel.vetter@ffwll.ch>
+ *
+ */
+
+/** @file gem_tiled_pread_pwrite.c
+ *
+ * This is a test of pread's behavior on tiled objects with respect to the
+ * reported swizzling value.
+ *
+ * The goal is to exercise the slow_bit17_copy path for reading on bit17
+ * machines, but will also be useful for catching swizzling value bugs on
+ * other systems.
+ */
+
+/*
+ * Testcase: Exercise swizzle code for swapping
+ *
+ * The swizzle checks in the swapin path are at a different place than the ones
+ * for pread/pwrite, so we need to check them separately.
+ *
+ * This test obviously needs swap present (and exits if none is detected).
+ */
+
+#include "igt.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <pthread.h>
+
+#include <drm.h>
+
+
+IGT_TEST_DESCRIPTION("Exercise swizzle code for swapping.");
+
+#define WIDTH 512
+#define HEIGHT 512
+#define LINEAR_DWORDS (4 * WIDTH * HEIGHT)
+static uint32_t current_tiling_mode;
+
+#define PAGE_SIZE 4096
+#define AVAIL_RAM 512
+
+static uint32_t
+create_bo(int fd)
+{
+	uint32_t handle;
+	uint32_t *data;
+
+	handle = gem_create(fd, LINEAR_DWORDS);
+	gem_set_tiling(fd, handle, current_tiling_mode, WIDTH * sizeof(uint32_t));
+
+	data = __gem_mmap__gtt(fd, handle, LINEAR_DWORDS, PROT_READ | PROT_WRITE);
+	if (data == NULL) {
+		gem_close(fd, handle);
+		return 0;
+	}
+	munmap(data, LINEAR_DWORDS);
+
+	return handle;
+}
+
+static void
+fill_bo(int fd, uint32_t handle)
+{
+	uint32_t *data;
+	int i;
+
+	data = gem_mmap__gtt(fd, handle, LINEAR_DWORDS,
+			     PROT_READ | PROT_WRITE);
+
+	gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
+	for (i = 0; i < WIDTH*HEIGHT; i++)
+		data[i] = i;
+	munmap(data, LINEAR_DWORDS);
+}
+
+static void
+check_bo(int fd, uint32_t handle)
+{
+	uint32_t *data;
+	int j;
+
+	data = gem_mmap__gtt(fd, handle, LINEAR_DWORDS, PROT_READ);
+	gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0);
+	j = rand() % (WIDTH * HEIGHT);
+	igt_assert_f(data[j] == j, "mismatch at %i: %i\n", j, data[j]);
+	munmap(data, LINEAR_DWORDS);
+}
+
+uint32_t *bo_handles;
+
+struct thread {
+	pthread_t thread;
+	int *idx_arr;
+	int fd, count;
+};
+
+static void *thread_run(void *data)
+{
+	struct thread *t = data;
+	int i;
+
+	for (i = 0; i < t->count; i++)
+		check_bo(t->fd, bo_handles[t->idx_arr[i]]);
+
+	return NULL;
+}
+
+static void thread_init(struct thread *t, int fd, int count)
+{
+	int i;
+
+	t->fd = fd;
+	t->count = count;
+	t->idx_arr = calloc(count, sizeof(int));
+	igt_assert(t->idx_arr);
+
+	for (i = 0; i < count; i++)
+		t->idx_arr[i] = i;
+
+	igt_permute_array(t->idx_arr, count, igt_exchange_int);
+}
+
+static void thread_fini(struct thread *t)
+{
+	free(t->idx_arr);
+}
+
+static void check_memory_layout(int fd)
+{
+	igt_skip_on_f(igt_debugfs_search(fd, "i915_swizzle_info", "L-shaped"),
+		      "L-shaped memory configuration detected\n");
+
+	igt_debug("normal memory configuration detected, continuing\n");
+}
+
+igt_main
+{
+	struct thread *threads;
+	int fd, n, count, num_threads;
+
+	igt_fixture {
+		size_t lock_size;
+
+		current_tiling_mode = I915_TILING_X;
+
+		fd = drm_open_driver(DRIVER_INTEL);
+
+		intel_purge_vm_caches(fd);
+		check_memory_layout(fd);
+
+		/* lock RAM, leaving only 512MB available */
+		lock_size = max(0, intel_get_total_ram_mb() - AVAIL_RAM);
+		igt_lock_mem(lock_size);
+
+		/* need slightly more than available memory */
+		count = min(intel_get_total_ram_mb(), AVAIL_RAM) * 1.25;
+		bo_handles = calloc(count, sizeof(uint32_t));
+		igt_assert(bo_handles);
+
+		num_threads = gem_available_fences(fd);
+		threads = calloc(num_threads, sizeof(struct thread));
+		igt_assert(threads);
+
+		igt_info("Using %d 1MiB objects (available RAM: %ld/%ld, swap: %ld)\n",
+			 count,
+			 (long)intel_get_avail_ram_mb(),
+			 (long)intel_get_total_ram_mb(),
+			 (long)intel_get_total_swap_mb());
+		intel_require_memory(count, 1024*1024, CHECK_RAM | CHECK_SWAP);
+
+		for (n = 0; n < count; n++) {
+			bo_handles[n] = create_bo(fd);
+			/* Not enough mmap address space possible. */
+			igt_require(bo_handles[n]);
+		}
+	}
+
+	igt_subtest("non-threaded") {
+		for (n = 0; n < count; n++)
+			fill_bo(fd, bo_handles[n]);
+
+		thread_init(&threads[0], fd, count);
+		thread_run(&threads[0]);
+		thread_run(&threads[0]);
+		thread_run(&threads[0]);
+		thread_fini(&threads[0]);
+	}
+
+	/* Once more with threads */
+	igt_subtest("threaded") {
+		for (n = 0; n < count; n++)
+			fill_bo(fd, bo_handles[n]);
+
+		for (n = 0; n < num_threads; n++)
+			thread_init(&threads[n], fd, count);
+
+		thread_run(&threads[0]);
+		for (n = 0; n < num_threads; n++)
+			pthread_create(&threads[n].thread, NULL, thread_run, &threads[n]);
+		for (n = 0; n < num_threads; n++)
+			pthread_join(threads[n].thread, NULL);
+		thread_run(&threads[0]);
+
+		for (n = 0; n < num_threads; n++)
+			thread_fini(&threads[n]);
+	}
+
+	close(fd);
+}