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, 212 insertions, 0 deletions

diff --git a/tests/i915/gem_exec_alignment.c b/tests/i915/gem_exec_alignment.c
new file mode 100644
index 00000000..a10571c9
--- /dev/null
+++ b/tests/i915/gem_exec_alignment.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright © 2015 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:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+/* Exercises the basic execbuffer using object alignments */
+
+#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 "drm.h"
+
+IGT_TEST_DESCRIPTION("Exercises the basic execbuffer using object alignments");
+
+static uint32_t find_last_bit(uint64_t x)
+{
+	uint32_t i = 0;
+	while (x) {
+		x >>= 1;
+		i++;
+	}
+	return i;
+}
+
+static uint32_t file_max(void)
+{
+	static uint32_t max;
+	if (max == 0) {
+		FILE *file = fopen("/proc/sys/fs/file-max", "r");
+		max = 80000;
+		if (file) {
+			igt_assert(fscanf(file, "%d", &max) == 1);
+			fclose(file);
+		}
+		max /= 2;
+	}
+	return max;
+}
+
+static void many(int fd)
+{
+	uint32_t bbe = MI_BATCH_BUFFER_END;
+	struct drm_i915_gem_exec_object2 *execobj;
+	struct drm_i915_gem_execbuffer2 execbuf;
+	uint64_t gtt_size, ram_size;
+	uint64_t alignment, max_alignment, count, i;
+
+	gtt_size = gem_aperture_size(fd);
+	if (!gem_uses_full_ppgtt(fd))
+		gtt_size /= 2; /* We have to *share* our GTT! */
+	ram_size = intel_get_total_ram_mb();
+	ram_size *= 1024 * 1024;
+	count = ram_size / 4096;
+	if (count > file_max()) /* vfs cap */
+		count = file_max();
+	max_alignment = find_last_bit(gtt_size / count);
+	if (max_alignment <= 13)
+		max_alignment = 4096;
+	else
+		max_alignment = 1ull << (max_alignment - 1);
+	count = gtt_size / max_alignment / 2;
+
+	igt_info("gtt_size=%lld MiB, max-alignment=%lld, count=%lld\n",
+		 (long long)gtt_size/1024/1024,
+		 (long long)max_alignment,
+		 (long long)count);
+	intel_require_memory(count, 4096, CHECK_RAM);
+
+	execobj = calloc(sizeof(*execobj), count + 1);
+	igt_assert(execobj);
+
+	for (i = 0; i < count; i++) {
+		execobj[i].handle = gem_create(fd, 4096);
+		if ((gtt_size-1) >> 32)
+			execobj[i].flags = 1<<3; /* EXEC_OBJECT_SUPPORTS_48B_ADDRESS */
+	}
+	execobj[i].handle = gem_create(fd, 4096);
+	if ((gtt_size-1) >> 32)
+		execobj[i].flags = 1<<3; /* EXEC_OBJECT_SUPPORTS_48B_ADDRESS */
+	gem_write(fd, execobj[i].handle, 0, &bbe, sizeof(bbe));
+
+	memset(&execbuf, 0, sizeof(execbuf));
+	execbuf.buffers_ptr = to_user_pointer(execobj);
+	execbuf.buffer_count = count + 1;
+	igt_require(__gem_execbuf(fd, &execbuf) == 0);
+
+	for (alignment = 4096; alignment < gtt_size; alignment <<= 1) {
+		for (i = 0; i < count; i++)
+			execobj[i].alignment = alignment;
+		if (alignment > max_alignment) {
+			uint64_t factor = alignment / max_alignment;
+			execbuf.buffer_count = 2*count / factor;
+			execbuf.buffers_ptr =
+				to_user_pointer(execobj + count - execbuf.buffer_count + 1);
+		}
+
+		igt_debug("testing %lld x alignment=%#llx [%db]\n",
+			  (long long)execbuf.buffer_count - 1,
+			  (long long)alignment,
+			  find_last_bit(alignment)-1);
+		gem_execbuf(fd, &execbuf);
+		for(i = count - execbuf.buffer_count + 1; i < count; i++) {
+			igt_assert_eq_u64(execobj[i].alignment, alignment);
+			igt_assert_eq_u64(execobj[i].offset % alignment, 0);
+		}
+	}
+
+	for (i = 0; i < count; i++)
+		gem_close(fd, execobj[i].handle);
+	gem_close(fd, execobj[i].handle);
+	free(execobj);
+}
+
+static void single(int fd)
+{
+	struct drm_i915_gem_exec_object2 execobj;
+	struct drm_i915_gem_execbuffer2 execbuf;
+	uint32_t batch = MI_BATCH_BUFFER_END;
+	uint64_t gtt_size;
+	int non_pot;
+
+	memset(&execobj, 0, sizeof(execobj));
+	execobj.handle = gem_create(fd, 4096);
+	execobj.flags = 1<<3; /* EXEC_OBJECT_SUPPORTS_48B_ADDRESS */
+	gem_write(fd, execobj.handle, 0, &batch, sizeof(batch));
+
+	memset(&execbuf, 0, sizeof(execbuf));
+	execbuf.buffers_ptr = to_user_pointer(&execobj);
+	execbuf.buffer_count = 1;
+
+	gtt_size = gem_aperture_size(fd);
+	if (__gem_execbuf(fd, &execbuf)) {
+		execobj.flags = 0;
+		gtt_size = 1ull << 32;
+		gem_execbuf(fd, &execbuf);
+	}
+
+	execobj.alignment = 3*4096;
+	non_pot = __gem_execbuf(fd, &execbuf) == 0;
+	igt_debug("execbuffer() accepts non-power-of-two alignment? %s\n",
+		  non_pot ? "yes" : "no");
+
+	for (execobj.alignment = 4096;
+	     execobj.alignment <= 64<<20;
+	     execobj.alignment += 4096) {
+		if (!non_pot && execobj.alignment & -execobj.alignment)
+			continue;
+
+		igt_debug("starting offset: %#llx, next alignment: %#llx\n",
+			  (long long)execobj.offset,
+			  (long long)execobj.alignment);
+		gem_execbuf(fd, &execbuf);
+		igt_assert_eq_u64(execobj.offset % execobj.alignment, 0);
+	}
+
+	for (execobj.alignment = 4096;
+	     execobj.alignment < gtt_size;
+	     execobj.alignment <<= 1) {
+		igt_debug("starting offset: %#llx, next alignment: %#llx [%db]\n",
+			  (long long)execobj.offset,
+			  (long long)execobj.alignment,
+			  find_last_bit(execobj.alignment)-1);
+		gem_execbuf(fd, &execbuf);
+		igt_assert_eq_u64(execobj.offset % execobj.alignment, 0);
+	}
+
+	gem_close(fd, execobj.handle);
+}
+
+igt_main
+{
+	int fd = -1;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_INTEL);
+		igt_require_gem(fd);
+	}
+
+	igt_subtest("single") /* basic! */
+		single(fd);
+	igt_subtest("many")
+		many(fd);
+
+}