[igt-dev] [PATCH i-g-t 01/74] tests/i915: Drop gem_ctx_ringsize

[Jason Ekstrand <jason@jlekstrand.net>]

I915_CONTEXT_PARAM_RINGSIZE is being removed from upstream i915 because
it's never been used by any userspace other than IGT.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 tests/i915/gem_ctx_ringsize.c | 345 ----------------------------------
 tests/meson.build             |   1 -
 2 files changed, 346 deletions(-)
 delete mode 100644 tests/i915/gem_ctx_ringsize.c

diff --git a/tests/i915/gem_ctx_ringsize.c b/tests/i915/gem_ctx_ringsize.c
deleted file mode 100644
index 60187b7c..00000000
--- a/tests/i915/gem_ctx_ringsize.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright © 2019 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.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <math.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "drmtest.h"
-#include "i915/gem.h"
-#include "i915/gem_context.h"
-#include "i915/gem_engine_topology.h"
-#include "ioctl_wrappers.h" /* gem_wait()! */
-#include "sw_sync.h"
-
-static bool has_ringsize(int i915)
-{
-	struct drm_i915_gem_context_param p = {
-		.param = I915_CONTEXT_PARAM_RINGSIZE,
-	};
-
-	return __gem_context_get_param(i915, &p) == 0;
-}
-
-static void test_idempotent(int i915)
-{
-	struct drm_i915_gem_context_param p = {
-		.param = I915_CONTEXT_PARAM_RINGSIZE,
-	};
-	uint32_t saved;
-
-	/*
-	 * Simple test to verify that we are able to read back the same
-	 * value as we set.
-	 */
-
-	gem_context_get_param(i915, &p);
-	saved = p.value;
-
-	for (uint32_t x = 1 << 12; x <= 128 << 12; x <<= 1) {
-		p.value = x;
-		gem_context_set_param(i915, &p);
-		gem_context_get_param(i915, &p);
-		igt_assert_eq_u32(p.value, x);
-	}
-
-	p.value = saved;
-	gem_context_set_param(i915, &p);
-}
-
-static void test_invalid(int i915)
-{
-	struct drm_i915_gem_context_param p = {
-		.param = I915_CONTEXT_PARAM_RINGSIZE,
-	};
-	uint64_t invalid[] = {
-		0, 1, 4095, 4097, 8191, 8193,
-		/* upper limit may be HW dependent, atm it is 512KiB */
-		(512 << 10) - 1, (512 << 10) + 1,
-		-1, -1u
-	};
-	uint32_t saved;
-
-	/*
-	 * The HW only accepts certain aligned values and so we reject
-	 * any invalid sizes specified by the user.
-	 *
-	 * Currently, the HW only accepts 4KiB - 512KiB in 4K increments,
-	 * and is unlikely to ever accept smaller.
-	 */
-
-	gem_context_get_param(i915, &p);
-	saved = p.value;
-
-	for (int i = 0; i < ARRAY_SIZE(invalid); i++) {
-		p.value = invalid[i];
-		igt_assert_eq(__gem_context_set_param(i915, &p), -EINVAL);
-		gem_context_get_param(i915, &p);
-		igt_assert_eq_u64(p.value, saved);
-	}
-}
-
-static int create_ext_ioctl(int i915,
-			    struct drm_i915_gem_context_create_ext *arg)
-{
-	int err;
-
-	err = 0;
-	if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT, arg)) {
-		err = -errno;
-		igt_assume(err);
-	}
-
-	errno = 0;
-	return err;
-}
-
-static void test_create(int i915)
-{
-	struct drm_i915_gem_context_create_ext_setparam p = {
-		.base = {
-			.name = I915_CONTEXT_CREATE_EXT_SETPARAM,
-			.next_extension = 0, /* end of chain */
-		},
-		.param = {
-			.param = I915_CONTEXT_PARAM_RINGSIZE,
-			.value = 512 << 10,
-		}
-	};
-	struct drm_i915_gem_context_create_ext create = {
-		.flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
-		.extensions = to_user_pointer(&p),
-	};
-
-	/*
-	 * Check that the ringsize parameter is used during context constuction.
-	 */
-
-	igt_assert_eq(create_ext_ioctl(i915, &create),  0);
-
-	p.param.ctx_id = create.ctx_id;
-	p.param.value = 0;
-	gem_context_get_param(i915, &p.param);
-	igt_assert_eq(p.param.value, 512 << 10);
-
-	gem_context_destroy(i915, create.ctx_id);
-}
-
-static void test_clone(int i915)
-{
-	struct drm_i915_gem_context_create_ext_setparam p = {
-		.base = {
-			.name = I915_CONTEXT_CREATE_EXT_SETPARAM,
-			.next_extension = 0, /* end of chain */
-		},
-		.param = {
-			.param = I915_CONTEXT_PARAM_RINGSIZE,
-			.value = 512 << 10,
-		}
-	};
-	struct drm_i915_gem_context_create_ext create = {
-		.flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
-		.extensions = to_user_pointer(&p),
-	};
-
-	/*
-	 * Check that the ringsize is copied across during context cloning.
-	 */
-
-	igt_assert_eq(create_ext_ioctl(i915, &create),  0);
-
-	p.param.ctx_id = gem_context_clone(i915, create.ctx_id,
-					   I915_CONTEXT_CLONE_ENGINES, 0);
-	igt_assert_neq(p.param.ctx_id, create.ctx_id);
-	gem_context_destroy(i915, create.ctx_id);
-
-	p.param.value = 0;
-	gem_context_get_param(i915, &p.param);
-	igt_assert_eq(p.param.value, 512 << 10);
-
-	gem_context_destroy(i915, p.param.ctx_id);
-}
-
-static int __execbuf(int i915, struct drm_i915_gem_execbuffer2 *execbuf)
-{
-	int err;
-
-	err = 0;
-	if (ioctl(i915, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf)) {
-		err = -errno;
-		igt_assume(err);
-	}
-
-	errno = 0;
-	return err;
-}
-
-#define IDLE (1 << 0)
-#define PLUG (1 << 1)
-
-static void sighandler(int sig)
-{
-}
-
-static unsigned int
-measure_inflight(int i915, unsigned int engine, int timeout, unsigned int flags)
-{
-	IGT_CORK_FENCE(cork);
-	unsigned int count;
-	igt_spin_t *spin;
-	int fence;
-	int err;
-
-	fcntl(i915, F_SETFL, fcntl(i915, F_GETFL) | O_NONBLOCK);
-	signal(SIGALRM, sighandler);
-	alarm(timeout);
-
-	fence = igt_cork_plug(&cork, i915);
-	spin = igt_spin_new(i915,
-			    .engine = engine,
-			    .fence = fence,
-			    .flags = (flags & PLUG) ? IGT_SPIN_FENCE_IN : 0);
-	for (count = 1; (err = __execbuf(i915, &spin->execbuf)) == 0; count++)
-		;
-	igt_debugfs_dump(i915, "i915_engine_info");
-	igt_assert_eq(err, -EWOULDBLOCK);
-	close(fence);
-
-	alarm(0);
-	signal(SIGALRM, SIG_DFL);
-	fcntl(i915, F_SETFL, fcntl(i915, F_GETFL) & ~O_NONBLOCK);
-
-	igt_spin_free(i915, spin);
-	igt_cork_unplug(&cork);
-
-	return count;
-}
-
-static void test_resize(int i915,
-			const struct intel_execution_engine2 *e,
-			void *data)
-#define as_pointer(x) (void *)(uintptr_t)(x)
-{
-	struct drm_i915_gem_context_param p = {
-		.param = I915_CONTEXT_PARAM_RINGSIZE,
-	};
-	unsigned long flags = (uintptr_t)data;
-	unsigned int prev[2] = {};
-	uint64_t elapsed;
-	uint32_t saved;
-
-	/*
-	 * The ringsize directly affects the number of batches we can have
-	 * inflight -- when we run out of room in the ring, the client is
-	 * blocked (or if O_NONBLOCK is specified, -EWOULDBLOCK is reported).
-	 * The kernel throttles the client when they enter the last 4KiB page,
-	 * so as we double the size of the ring, we nearly double the number
-	 * of requests we can fit as 2^n-1: i.e 0, 1, 3, 7, 15, 31 pages.
-	 */
-
-	gem_context_get_param(i915, &p);
-	saved = p.value;
-
-	/* XXX disable hangchecking? */
-	elapsed = 0;
-	gem_quiescent_gpu(i915);
-	for (p.value = 1 << 12; p.value <= 128 << 12; p.value <<= 1) {
-		struct timespec tv = {};
-		unsigned int count;
-
-		gem_context_set_param(i915, &p);
-
-		igt_nsec_elapsed(&tv);
-		count = measure_inflight(i915,
-					 e->flags,
-					 1 + 4 * ceil(elapsed*1e-9),
-					 flags);
-		elapsed = igt_nsec_elapsed(&tv);
-
-		igt_info("%s: %6llx -> %'6d\n", e->name, p.value, count);
-		igt_assert(count > 3 * (prev[1] - prev[0]) / 4 + prev[1]);
-		if (flags & IDLE)
-			gem_quiescent_gpu(i915);
-
-		prev[0] = prev[1];
-		prev[1] = count;
-	}
-	gem_quiescent_gpu(i915);
-
-	p.value = saved;
-	gem_context_set_param(i915, &p);
-}
-
-static void gem_test_each_engine(int i915, const char *name,
-				 void (*fn)(int i915,
-					    const struct intel_execution_engine2 *e,
-					    void *data),
-				 void *data)
-{
-	const struct intel_execution_engine2 *e;
-
-	igt_subtest_with_dynamic(name) {
-		__for_each_physical_engine(i915, e) {
-			igt_dynamic_f("%s", e->name)
-				fn(i915, e, data);
-		}
-	}
-}
-
-igt_main
-{
-	int i915;
-
-	igt_fixture {
-		i915 = drm_open_driver(DRIVER_INTEL);
-		igt_require_gem(i915);
-
-		igt_require(has_ringsize(i915));
-	}
-
-	igt_subtest("idempotent")
-		test_idempotent(i915);
-
-	igt_subtest("invalid")
-		test_invalid(i915);
-
-	igt_subtest("create")
-		test_create(i915);
-	igt_subtest("clone")
-		test_clone(i915);
-
-	gem_test_each_engine(i915, "idle", test_resize, as_pointer(IDLE));
-	gem_test_each_engine(i915, "active", test_resize, 0);
-	gem_test_each_engine(i915, "plugged", test_resize, as_pointer(PLUG));
-
-	/* XXX ctx->engines[]? Clone (above) should be enough */
-
-	igt_fixture {
-		close(i915);
-	}
-}
diff --git a/tests/meson.build b/tests/meson.build
index 6ad34409..2c579d4c 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -133,7 +133,6 @@ i915_progs = [
 	'gem_ctx_isolation',
 	'gem_ctx_param',
 	'gem_ctx_persistence',
-	'gem_ctx_ringsize',
 	'gem_ctx_shared',
 	'gem_ctx_switch',
 	'gem_evict_alignment',
-- 
2.31.1

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