drm/i915: Actually delete gpu reloc selftests

In commit 8e02cceb ("drm/i915: delete gpu reloc code") I deleted
the gpu relocation code and the selftest include and enabling, but
accidentally forgot about the selftest source code.

Fix this oversight.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20210820154932.296628-1-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c

-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2020 Intel Corporation
- */
-
-#include "i915_selftest.h"
-
-#include "gt/intel_engine_pm.h"
-#include "selftests/igt_flush_test.h"
-
-static u64 read_reloc(const u32 *map, int x, const u64 mask)
-{
-	u64 reloc;
-
-	memcpy(&reloc, &map[x], sizeof(reloc));
-	return reloc & mask;
-}
-
-static int __igt_gpu_reloc(struct i915_execbuffer *eb,
-			   struct drm_i915_gem_object *obj)
-{
-	const unsigned int offsets[] = { 8, 3, 0 };
-	const u64 mask =
-		GENMASK_ULL(eb->reloc_cache.use_64bit_reloc ? 63 : 31, 0);
-	const u32 *map = page_mask_bits(obj->mm.mapping);
-	struct i915_request *rq;
-	struct i915_vma *vma;
-	int err;
-	int i;
-
-	vma = i915_vma_instance(obj, eb->context->vm, NULL);
-	if (IS_ERR(vma))
-		return PTR_ERR(vma);
-
-	err = i915_gem_object_lock(obj, &eb->ww);
-	if (err)
-		return err;
-
-	err = i915_vma_pin_ww(vma, &eb->ww, 0, 0, PIN_USER | PIN_HIGH);
-	if (err)
-		return err;
-
-	/* 8-Byte aligned */
-	err = __reloc_entry_gpu(eb, vma, offsets[0] * sizeof(u32), 0);
-	if (err <= 0)
-		goto reloc_err;
-
-	/* !8-Byte aligned */
-	err = __reloc_entry_gpu(eb, vma, offsets[1] * sizeof(u32), 1);
-	if (err <= 0)
-		goto reloc_err;
-
-	/* Skip to the end of the cmd page */
-	i = PAGE_SIZE / sizeof(u32) - 1;
-	i -= eb->reloc_cache.rq_size;
-	memset32(eb->reloc_cache.rq_cmd + eb->reloc_cache.rq_size,
-		 MI_NOOP, i);
-	eb->reloc_cache.rq_size += i;
-
-	/* Force next batch */
-	err = __reloc_entry_gpu(eb, vma, offsets[2] * sizeof(u32), 2);
-	if (err <= 0)
-		goto reloc_err;
-
-	GEM_BUG_ON(!eb->reloc_cache.rq);
-	rq = i915_request_get(eb->reloc_cache.rq);
-	reloc_gpu_flush(eb, &eb->reloc_cache);
-	GEM_BUG_ON(eb->reloc_cache.rq);
-
-	err = i915_gem_object_wait(obj, I915_WAIT_INTERRUPTIBLE, HZ / 2);
-	if (err) {
-		intel_gt_set_wedged(eb->engine->gt);
-		goto put_rq;
-	}
-
-	if (!i915_request_completed(rq)) {
-		pr_err("%s: did not wait for relocations!\n", eb->engine->name);
-		err = -EINVAL;
-		goto put_rq;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(offsets); i++) {
-		u64 reloc = read_reloc(map, offsets[i], mask);
-
-		if (reloc != i) {
-			pr_err("%s[%d]: map[%d] %llx != %x\n",
-			       eb->engine->name, i, offsets[i], reloc, i);
-			err = -EINVAL;
-		}
-	}
-	if (err)
-		igt_hexdump(map, 4096);
-
-put_rq:
-	i915_request_put(rq);
-unpin_vma:
-	i915_vma_unpin(vma);
-	return err;
-
-reloc_err:
-	if (!err)
-		err = -EIO;
-	goto unpin_vma;
-}
-
-static int igt_gpu_reloc(void *arg)
-{
-	struct i915_execbuffer eb;
-	struct drm_i915_gem_object *scratch;
-	int err = 0;
-	u32 *map;
-
-	eb.i915 = arg;
-
-	scratch = i915_gem_object_create_internal(eb.i915, 4096);
-	if (IS_ERR(scratch))
-		return PTR_ERR(scratch);
-
-	map = i915_gem_object_pin_map_unlocked(scratch, I915_MAP_WC);
-	if (IS_ERR(map)) {
-		err = PTR_ERR(map);
-		goto err_scratch;
-	}
-
-	intel_gt_pm_get(&eb.i915->gt);
-
-	for_each_uabi_engine(eb.engine, eb.i915) {
-		if (intel_engine_requires_cmd_parser(eb.engine) ||
-		    intel_engine_using_cmd_parser(eb.engine))
-			continue;
-
-		reloc_cache_init(&eb.reloc_cache, eb.i915);
-		memset(map, POISON_INUSE, 4096);
-
-		intel_engine_pm_get(eb.engine);
-		eb.context = intel_context_create(eb.engine);
-		if (IS_ERR(eb.context)) {
-			err = PTR_ERR(eb.context);
-			goto err_pm;
-		}
-		eb.reloc_pool = NULL;
-		eb.reloc_context = NULL;
-
-		i915_gem_ww_ctx_init(&eb.ww, false);
-retry:
-		err = intel_context_pin_ww(eb.context, &eb.ww);
-		if (!err) {
-			err = __igt_gpu_reloc(&eb, scratch);
-
-			intel_context_unpin(eb.context);
-		}
-		if (err == -EDEADLK) {
-			err = i915_gem_ww_ctx_backoff(&eb.ww);
-			if (!err)
-				goto retry;
-		}
-		i915_gem_ww_ctx_fini(&eb.ww);
-
-		if (eb.reloc_pool)
-			intel_gt_buffer_pool_put(eb.reloc_pool);
-		if (eb.reloc_context)
-			intel_context_put(eb.reloc_context);
-
-		intel_context_put(eb.context);
-err_pm:
-		intel_engine_pm_put(eb.engine);
-		if (err)
-			break;
-	}
-
-	if (igt_flush_test(eb.i915))
-		err = -EIO;
-
-	intel_gt_pm_put(&eb.i915->gt);
-err_scratch:
-	i915_gem_object_put(scratch);
-	return err;
-}
-
-int i915_gem_execbuffer_live_selftests(struct drm_i915_private *i915)
-{
-	static const struct i915_subtest tests[] = {
-		SUBTEST(igt_gpu_reloc),
-	};
-
-	if (intel_gt_is_wedged(&i915->gt))
-		return 0;
-
-	return i915_live_subtests(tests, i915);
-}