Merge tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "There's a lot of stuff in here, amd, i915 and xe have new platform
  work, lots of core rework around EDID handling, some new COMPILE_TEST
  options, maintainer changes and a lots of other stuff. Summary:

  core:
   - deprecate DRM data and return 0 date
   - connector: Create a set of helpers to help with HDMI support
   - Remove driver owner assignments
   - Allow more drivers to compile with COMPILE_TEST
   - Conversions to drm_edid
   - Sprinkle MODULE_DESCRIPTIONS everywhere they are missing
   - Remove drm_mm_replace_node
   - print: Add a drm prefix to warn level messages too, remove
            ___drm_dbg, consolidate prefix handling
   - New monochrome TV mode variant

  ttm:
   - improve number of page faults on some platforms
   - fix test builds under PREEMPT_RT
   - more test coverage

  ci:
   - Require a more recent version of mesa
   - improve farm setup and test generation

  dma-buf:
   - warn if reserving 0 fence slots
   - internal API heap enhancements

  fbdev:
   - Create memory manager optimized fbdev emulation

  panic:
   - Allow to select fonts
   - improve drm_fb_dma_get_scanout_buffer
   - Allow to dump kmsg to the screen

  bridge:
   - Remove redundant checks on bridge->encoder
   - Remove drm_bridge_chain_mode_fixup
   - bridge-connector: Plumb in the new HDMI helper
   - analogix_dp: Various improvements, handle AUX transfers timeout
   - samsung-dsim: Fix timings calculation
   - tc358767: Plenty of small fixes, fix no connector attach, fix
               clocks
   - sii902x: state validation improvements

  panels:
   - Switch panels from register table initialization to proper code
   - Now that the panel code tracks the panel state, remove every ad-hoc
     implementation in the panel drivers
   - More cleanup of prepare / enable state tracking in drivers
   - edp: Drop legacy panel compatibles
   - simple-bridge: Switch to devm_drm_bridge_add
   - New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
                 13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0,
                 BOE nv110wum-l60, IVO t109nw41, WL-355608-A8, PrimeView
                 PM070WL4, Lincoln Technologies LCD197, Ortustech
                 COM35H3P70ULC, AUO G104STN01, K&d kd101ne3-40ti

  amdgpu:
   - DCN 4.0.x support
   - GC 12.0 support
   - GMC 12.0 support
   - SDMA 7.0 support
   - MES12 support
   - MMHUB 4.1 support
   - GFX12 modifier and DCC support
   - lots of IP fixes/updates

  amdkfd:
   - Contiguous VRAM allocations
   - GC 12.0 support
   - SDMA 7.0 support
   - SR-IOV fixes
   - KFD GFX ALU exceptions

  i915:
   - Battlemage Xe2 HPD display enablement
   - Panel Replay enabling
   - DP AUX-less ALPM/LOBF
   - Enable link training failure fallback for DP MST links
   - CMRR (Content Match Refresh Rate) enabling
   - Increase ADL-S/ADL-P/DG2+ max TMDS bitrate to 6 Gbps
   - Enable eDP AUX based HDR backlight
   - Support replaying GPU hangs with captured context image
   - Automate CCS Mode setting during engine resets
   - lots of refactoring
   - Support replaying GPU hangs with captured context image
   - Increase FLR timeout from 3s to 9s
   - Enable w/a 16021333562 for DG2, MTL and ARL [guc]

  xe:
   - update MAINATINERS
   - New uapi adding OA functionality to Xe
   - expose l3 bank mask
   - fix display detect on ADL-N
   - runtime PM Fixes
   - Fix silent backmerge issues
   - More prep for SR-IOV
   - HWmon additions
   - per client usage info
   - Rework GPU page fault handling
   - Drop EXEC_QUEUE_FLAG_BANNED
   - Add BMG PCI IDs
   - Scheduler fixes and improvements
   - Rename xe_exec_queue::compute to xe_exec_queue::lr
   - Use ttm_uncached for BO with NEEDS_UC flag
   - Rename xe perf layer as xe observation layer
   - lots of refactoring

  radeon:
   - Backlight workaround for iMac
   - Silence UBSAN flex array warnings

  msm:
   - Validate registers XML description against schema in CI
   - core/dpu: SM7150 support
   - mdp5: Add support for MSM8937
   - gpu: Add param for userspace to know if raytracing is supported
   - gpu: X185 support (aka gpu in X1 laptop chips)
   - gpu: a505 support

  ivpu:
   - hardware scheduler support
   - profiling support
   - improvements to the platform support layer
   - firmware handling improvements
   - clocks/power mgmt improvements
   - scheduler/logging improvements

  habanalabs:
   - Gradual sleep in polling memory macro
   - Reduce Gaudi2 MSI-X interrupt count to 128
   - Add Gaudi2-D revision support
   - Add timestamp to CPLD info
   - Gaudi2: Assume hard-reset by firmware upon MC SEI severe error
   - Align Gaudi2 interrupt names
   - Check for errors after preboot is ready
   - Change habanalabs maintainer and git repo path

  mgag200:
   - refactoring and improvements
   - Add BMC output
   - enable polling

  nouveau:
   - add registry command line

  v3d:
   - perf counters improvements

  zynqmp:
   - irq and debugfs improvements

  atmel-hlcdc:
   - Support XLCDC in sam9x7

  mipi-dbi:
   - Remove mipi_dbi_machine_little_endian
   - make SPI bits per word configurable
   - support RGB888
   - allow pixel formats to be specified in the DT

  sun4i:
   - Rework the blender setup for DE2

  panfrost:
   - Enable MT8188 support

  vc4:
   - Monochrome TV support

  exynos:
   - fix fallback mode regression
   - fix memory leak
   - Use drm_edid_duplicate() instead of kmemdup()

  etnaviv:
   - fix i.MX8MP NPU clock gating
   - workaround FE register cdc issues on some cores
   - fix DMA sync handling for cached buffers
   - fix job timeout handling
   - keep TS enabled on MMUv2 cores for improved performance

  mediatek:
   - Convert to platform remove callback returning void-
   - Drop chain_mode_fixup call in mode_valid()
   - Fixes the errors of MediaTek display driver found by IGT
   - Add display support for the MT8365-EVK board
   - Fix bit depth overwritten for mtk_ovl_set bit_depth()
   - Fix possible_crtcs calculation
   - Fix spurious kfree()

  ast:
   - refactor mode setting code

  stm:
   - Add LVDS support
   - DSI PHY updates"

* tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel: (2501 commits)
  drm/amdgpu/mes12: add missing opcode string
  drm/amdgpu/mes11: update opcode strings
  Revert "drm/amd/display: Reset freesync config before update new state"
  drm/omap: Restrict compile testing to PAGE_SIZE less than 64KB
  drm/xe: Drop trace_xe_hw_fence_free
  drm/xe/uapi: Rename xe perf layer as xe observation layer
  drm/amdgpu: remove exp hw support check for gfx12
  drm/amdgpu: timely save bad pages to eeprom after gpu ras reset is completed
  drm/amdgpu: flush all cached ras bad pages to eeprom
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/display: Allow display DCC for DCN401
  drm/amdgpu: select compute ME engines dynamically
  drm/amdgpu/job: Replace DRM_INFO/ERROR logging
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/pm: Ignore initial value in smu response register
  drm/amdgpu: Initialize VF partition mode
  drm/amd/amdgpu: fix SDMA IRQ client ID <-> req mapping
  MAINTAINERS: fix Xinhui's name
  MAINTAINERS: update powerplay and swsmu
  drm/qxl: Pin buffer objects for internal mappings
  ...

1 files changed, 1225 insertions, 0 deletions

diff --git a/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c b/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
new file mode 100644
index 000000000000..1adf18481ea0
--- /dev/null
+++ b/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
@@ -0,0 +1,1225 @@
+// SPDX-License-Identifier: GPL-2.0 AND MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+#include <linux/delay.h>
+#include <linux/kthread.h>
+
+#include <drm/ttm/ttm_resource.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/ttm/ttm_tt.h>
+
+#include "ttm_kunit_helpers.h"
+#include "ttm_mock_manager.h"
+
+#define BO_SIZE		SZ_4K
+#define MANAGER_SIZE	SZ_1M
+
+static struct spinlock fence_lock;
+
+struct ttm_bo_validate_test_case {
+	const char *description;
+	enum ttm_bo_type bo_type;
+	u32 mem_type;
+	bool with_ttm;
+	bool no_gpu_wait;
+};
+
+static struct ttm_placement *ttm_placement_kunit_init(struct kunit *test,
+						      struct ttm_place *places,
+						      unsigned int num_places)
+{
+	struct ttm_placement *placement;
+
+	placement = kunit_kzalloc(test, sizeof(*placement), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, placement);
+
+	placement->num_placement = num_places;
+	placement->placement = places;
+
+	return placement;
+}
+
+static const char *fence_name(struct dma_fence *f)
+{
+	return "ttm-bo-validate-fence";
+}
+
+static const struct dma_fence_ops fence_ops = {
+	.get_driver_name = fence_name,
+	.get_timeline_name = fence_name,
+};
+
+static struct dma_fence *alloc_mock_fence(struct kunit *test)
+{
+	struct dma_fence *fence;
+
+	fence = kunit_kzalloc(test, sizeof(*fence), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, fence);
+
+	dma_fence_init(fence, &fence_ops, &fence_lock, 0, 0);
+
+	return fence;
+}
+
+static void dma_resv_kunit_active_fence_init(struct kunit *test,
+					     struct dma_resv *resv,
+					     enum dma_resv_usage usage)
+{
+	struct dma_fence *fence;
+
+	fence = alloc_mock_fence(test);
+	dma_fence_enable_sw_signaling(fence);
+
+	dma_resv_lock(resv, NULL);
+	dma_resv_reserve_fences(resv, 1);
+	dma_resv_add_fence(resv, fence, usage);
+	dma_resv_unlock(resv);
+}
+
+static void ttm_bo_validate_case_desc(const struct ttm_bo_validate_test_case *t,
+				      char *desc)
+{
+	strscpy(desc, t->description, KUNIT_PARAM_DESC_SIZE);
+}
+
+static const struct ttm_bo_validate_test_case ttm_bo_type_cases[] = {
+	{
+		.description = "Buffer object for userspace",
+		.bo_type = ttm_bo_type_device,
+	},
+	{
+		.description = "Kernel buffer object",
+		.bo_type = ttm_bo_type_kernel,
+	},
+	{
+		.description = "Shared buffer object",
+		.bo_type = ttm_bo_type_sg,
+	},
+};
+
+KUNIT_ARRAY_PARAM(ttm_bo_types, ttm_bo_type_cases,
+		  ttm_bo_validate_case_desc);
+
+static void ttm_bo_init_reserved_sys_man(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	struct ttm_test_devices *priv = test->priv;
+	enum ttm_bo_type bo_type = params->bo_type;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement,
+				   PAGE_SIZE, &ctx, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, kref_read(&bo->kref), 1);
+	KUNIT_EXPECT_PTR_EQ(test, bo->bdev, priv->ttm_dev);
+	KUNIT_EXPECT_EQ(test, bo->type, bo_type);
+	KUNIT_EXPECT_EQ(test, bo->page_alignment, PAGE_SIZE);
+	KUNIT_EXPECT_PTR_EQ(test, bo->destroy, &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, bo->pin_count, 0);
+	KUNIT_EXPECT_NULL(test, bo->bulk_move);
+	KUNIT_EXPECT_NOT_NULL(test, bo->ttm);
+	KUNIT_EXPECT_FALSE(test, ttm_tt_is_populated(bo->ttm));
+	KUNIT_EXPECT_NOT_NULL(test, (void *)bo->base.resv->fences);
+	KUNIT_EXPECT_EQ(test, ctx.bytes_moved, size);
+
+	if (bo_type != ttm_bo_type_kernel)
+		KUNIT_EXPECT_TRUE(test,
+				  drm_mm_node_allocated(&bo->base.vma_node.vm_node));
+
+	ttm_resource_free(bo, &bo->resource);
+	ttm_bo_put(bo);
+}
+
+static void ttm_bo_init_reserved_mock_man(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	enum ttm_bo_type bo_type = params->bo_type;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	u32 mem_type = TTM_PL_VRAM;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement,
+				   PAGE_SIZE, &ctx, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, kref_read(&bo->kref), 1);
+	KUNIT_EXPECT_PTR_EQ(test, bo->bdev, priv->ttm_dev);
+	KUNIT_EXPECT_EQ(test, bo->type, bo_type);
+	KUNIT_EXPECT_EQ(test, ctx.bytes_moved, size);
+
+	if (bo_type != ttm_bo_type_kernel)
+		KUNIT_EXPECT_TRUE(test,
+				  drm_mm_node_allocated(&bo->base.vma_node.vm_node));
+
+	ttm_resource_free(bo, &bo->resource);
+	ttm_bo_put(bo);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+}
+
+static void ttm_bo_init_reserved_resv(struct kunit *test)
+{
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	struct dma_resv resv;
+	int err;
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+	dma_resv_init(&resv);
+	dma_resv_lock(&resv, NULL);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement,
+				   PAGE_SIZE, &ctx, NULL, &resv,
+				   &dummy_ttm_bo_destroy);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_PTR_EQ(test, bo->base.resv, &resv);
+
+	ttm_resource_free(bo, &bo->resource);
+	ttm_bo_put(bo);
+}
+
+static void ttm_bo_validate_basic(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	u32 fst_mem = TTM_PL_SYSTEM, snd_mem = TTM_PL_VRAM;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val = { };
+	struct ttm_placement *fst_placement, *snd_placement;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_place *fst_place, *snd_place;
+	u32 size = ALIGN(SZ_8K, PAGE_SIZE);
+	struct ttm_buffer_object *bo;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, snd_mem, MANAGER_SIZE);
+
+	fst_place = ttm_place_kunit_init(test, fst_mem, 0);
+	fst_placement = ttm_placement_kunit_init(test, fst_place, 1);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, params->bo_type,
+				   fst_placement, PAGE_SIZE, &ctx_init, NULL,
+				   NULL, &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	snd_place = ttm_place_kunit_init(test, snd_mem, DRM_BUDDY_TOPDOWN_ALLOCATION);
+	snd_placement = ttm_placement_kunit_init(test, snd_place, 1);
+
+	err = ttm_bo_validate(bo, snd_placement, &ctx_val);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, bo->base.size);
+	KUNIT_EXPECT_NOT_NULL(test, bo->ttm);
+	KUNIT_EXPECT_TRUE(test, ttm_tt_is_populated(bo->ttm));
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, snd_mem);
+	KUNIT_EXPECT_EQ(test, bo->resource->placement,
+			DRM_BUDDY_TOPDOWN_ALLOCATION);
+
+	ttm_bo_put(bo);
+	ttm_mock_manager_fini(priv->ttm_dev, snd_mem);
+}
+
+static void ttm_bo_validate_invalid_placement(struct kunit *test)
+{
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	u32 unknown_mem_type = TTM_PL_PRIV + 1;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	place = ttm_place_kunit_init(test, unknown_mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = bo_type;
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, -ENOMEM);
+
+	ttm_bo_put(bo);
+}
+
+static void ttm_bo_validate_failed_alloc(struct kunit *test)
+{
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	u32 mem_type = TTM_PL_VRAM;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = bo_type;
+
+	ttm_bad_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, -ENOMEM);
+
+	ttm_bo_put(bo);
+	ttm_bad_manager_fini(priv->ttm_dev, mem_type);
+}
+
+static void ttm_bo_validate_pinned(struct kunit *test)
+{
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	u32 mem_type = TTM_PL_SYSTEM;
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = bo_type;
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	ttm_bo_pin(bo);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, -EINVAL);
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	ttm_bo_unpin(bo);
+	dma_resv_unlock(bo->base.resv);
+
+	ttm_bo_put(bo);
+}
+
+static const struct ttm_bo_validate_test_case ttm_mem_type_cases[] = {
+	{
+		.description = "System manager",
+		.mem_type = TTM_PL_SYSTEM,
+	},
+	{
+		.description = "VRAM manager",
+		.mem_type = TTM_PL_VRAM,
+	},
+};
+
+KUNIT_ARRAY_PARAM(ttm_bo_validate_mem, ttm_mem_type_cases,
+		  ttm_bo_validate_case_desc);
+
+static void ttm_bo_validate_same_placement(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val = { };
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	place = ttm_place_kunit_init(test, params->mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	if (params->mem_type != TTM_PL_SYSTEM)
+		ttm_mock_manager_init(priv->ttm_dev, params->mem_type, MANAGER_SIZE);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, params->bo_type,
+				   placement, PAGE_SIZE, &ctx_init, NULL,
+				   NULL, &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	err = ttm_bo_validate(bo, placement, &ctx_val);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, 0);
+
+	ttm_bo_put(bo);
+
+	if (params->mem_type != TTM_PL_SYSTEM)
+		ttm_mock_manager_fini(priv->ttm_dev, params->mem_type);
+}
+
+static void ttm_bo_validate_busy_placement(struct kunit *test)
+{
+	u32 fst_mem = TTM_PL_VRAM, snd_mem = TTM_PL_VRAM + 1;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val = { };
+	struct ttm_placement *placement_init, *placement_val;
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_place *init_place, places[2];
+	struct ttm_resource_manager *man;
+	struct ttm_buffer_object *bo;
+	int err;
+
+	ttm_bad_manager_init(priv->ttm_dev, fst_mem, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, snd_mem, MANAGER_SIZE);
+
+	init_place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
+	placement_init = ttm_placement_kunit_init(test, init_place, 1);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement_init,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	places[0] = (struct ttm_place){ .mem_type = fst_mem, .flags = TTM_PL_FLAG_DESIRED };
+	places[1] = (struct ttm_place){ .mem_type = snd_mem, .flags = TTM_PL_FLAG_FALLBACK };
+	placement_val = ttm_placement_kunit_init(test, places, 2);
+
+	err = ttm_bo_validate(bo, placement_val, &ctx_val);
+	dma_resv_unlock(bo->base.resv);
+
+	man = ttm_manager_type(priv->ttm_dev, snd_mem);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, bo->base.size);
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, snd_mem);
+	KUNIT_ASSERT_TRUE(test, list_is_singular(&man->lru[bo->priority]));
+
+	ttm_bo_put(bo);
+	ttm_bad_manager_fini(priv->ttm_dev, fst_mem);
+	ttm_mock_manager_fini(priv->ttm_dev, snd_mem);
+}
+
+static void ttm_bo_validate_multihop(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val = { };
+	struct ttm_placement *placement_init, *placement_val;
+	u32 fst_mem = TTM_PL_VRAM, tmp_mem = TTM_PL_TT, final_mem = TTM_PL_SYSTEM;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_place *fst_place, *final_place;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_buffer_object *bo;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, fst_mem, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, tmp_mem, MANAGER_SIZE);
+
+	fst_place = ttm_place_kunit_init(test, fst_mem, 0);
+	placement_init = ttm_placement_kunit_init(test, fst_place, 1);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, params->bo_type,
+				   placement_init, PAGE_SIZE, &ctx_init, NULL,
+				   NULL, &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	final_place = ttm_place_kunit_init(test, final_mem, 0);
+	placement_val = ttm_placement_kunit_init(test, final_place, 1);
+
+	err = ttm_bo_validate(bo, placement_val, &ctx_val);
+	dma_resv_unlock(bo->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, size * 2);
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, final_mem);
+
+	ttm_bo_put(bo);
+
+	ttm_mock_manager_fini(priv->ttm_dev, fst_mem);
+	ttm_mock_manager_fini(priv->ttm_dev, tmp_mem);
+}
+
+static const struct ttm_bo_validate_test_case ttm_bo_no_placement_cases[] = {
+	{
+		.description = "Buffer object in system domain, no page vector",
+	},
+	{
+		.description = "Buffer object in system domain with an existing page vector",
+		.with_ttm = true,
+	},
+};
+
+KUNIT_ARRAY_PARAM(ttm_bo_no_placement, ttm_bo_no_placement_cases,
+		  ttm_bo_validate_case_desc);
+
+static void ttm_bo_validate_no_placement_signaled(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	u32 mem_type = TTM_PL_SYSTEM;
+	struct ttm_resource_manager *man;
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	struct ttm_tt *old_tt;
+	u32 flags;
+	int err;
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	man = ttm_manager_type(priv->ttm_dev, mem_type);
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = bo_type;
+
+	if (params->with_ttm) {
+		old_tt = priv->ttm_dev->funcs->ttm_tt_create(bo, 0);
+		ttm_pool_alloc(&priv->ttm_dev->pool, old_tt, &ctx);
+		bo->ttm = old_tt;
+	}
+
+	err = ttm_resource_alloc(bo, place, &bo->resource);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_ASSERT_EQ(test, man->usage, size);
+
+	placement = kunit_kzalloc(test, sizeof(*placement), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, placement);
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	ttm_bo_unreserve(bo);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_ASSERT_EQ(test, man->usage, 0);
+	KUNIT_ASSERT_NOT_NULL(test, bo->ttm);
+	KUNIT_EXPECT_EQ(test, ctx.bytes_moved, 0);
+
+	if (params->with_ttm) {
+		flags = bo->ttm->page_flags;
+
+		KUNIT_ASSERT_PTR_EQ(test, bo->ttm, old_tt);
+		KUNIT_ASSERT_FALSE(test, flags & TTM_TT_FLAG_PRIV_POPULATED);
+		KUNIT_ASSERT_TRUE(test, flags & TTM_TT_FLAG_ZERO_ALLOC);
+	}
+
+	ttm_bo_put(bo);
+}
+
+static int threaded_dma_resv_signal(void *arg)
+{
+	struct ttm_buffer_object *bo = arg;
+	struct dma_resv *resv = bo->base.resv;
+	struct dma_resv_iter cursor;
+	struct dma_fence *fence;
+
+	dma_resv_iter_begin(&cursor, resv, DMA_RESV_USAGE_BOOKKEEP);
+	dma_resv_for_each_fence_unlocked(&cursor, fence) {
+		dma_fence_signal(fence);
+	}
+	dma_resv_iter_end(&cursor);
+
+	return 0;
+}
+
+static void ttm_bo_validate_no_placement_not_signaled(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	enum dma_resv_usage usage = DMA_RESV_USAGE_BOOKKEEP;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	u32 mem_type = TTM_PL_SYSTEM;
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct task_struct *task;
+	struct ttm_place *place;
+	int err;
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = params->bo_type;
+
+	err = ttm_resource_alloc(bo, place, &bo->resource);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	placement = kunit_kzalloc(test, sizeof(*placement), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, placement);
+
+	/* Create an active fence to simulate a non-idle resv object */
+	spin_lock_init(&fence_lock);
+	dma_resv_kunit_active_fence_init(test, bo->base.resv, usage);
+
+	task = kthread_create(threaded_dma_resv_signal, bo, "dma-resv-signal");
+	if (IS_ERR(task))
+		KUNIT_FAIL(test, "Couldn't create dma resv signal task\n");
+
+	wake_up_process(task);
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	ttm_bo_unreserve(bo);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_ASSERT_NOT_NULL(test, bo->ttm);
+	KUNIT_ASSERT_NULL(test, bo->resource);
+	KUNIT_ASSERT_NULL(test, bo->bulk_move);
+	KUNIT_EXPECT_EQ(test, ctx.bytes_moved, 0);
+
+	if (bo->type != ttm_bo_type_sg)
+		KUNIT_ASSERT_PTR_EQ(test, bo->base.resv, &bo->base._resv);
+
+	/* Make sure we have an idle object at this point */
+	dma_resv_wait_timeout(bo->base.resv, usage, false, MAX_SCHEDULE_TIMEOUT);
+
+	ttm_bo_put(bo);
+}
+
+static void ttm_bo_validate_move_fence_signaled(struct kunit *test)
+{
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_operation_ctx ctx = { };
+	u32 mem_type = TTM_PL_SYSTEM;
+	struct ttm_resource_manager *man;
+	struct ttm_placement *placement;
+	struct ttm_buffer_object *bo;
+	struct ttm_place *place;
+	int err;
+
+	man = ttm_manager_type(priv->ttm_dev, mem_type);
+	man->move = dma_fence_get_stub();
+
+	bo = ttm_bo_kunit_init(test, test->priv, size, NULL);
+	bo->type = bo_type;
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx);
+	ttm_bo_unreserve(bo);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, mem_type);
+	KUNIT_EXPECT_EQ(test, ctx.bytes_moved, size);
+
+	ttm_bo_put(bo);
+	dma_fence_put(man->move);
+}
+
+static const struct ttm_bo_validate_test_case ttm_bo_validate_wait_cases[] = {
+	{
+		.description = "Waits for GPU",
+		.no_gpu_wait = false,
+	},
+	{
+		.description = "Tries to lock straight away",
+		.no_gpu_wait = true,
+	},
+};
+
+KUNIT_ARRAY_PARAM(ttm_bo_validate_wait, ttm_bo_validate_wait_cases,
+		  ttm_bo_validate_case_desc);
+
+static int threaded_fence_signal(void *arg)
+{
+	struct dma_fence *fence = arg;
+
+	msleep(20);
+
+	return dma_fence_signal(fence);
+}
+
+static void ttm_bo_validate_move_fence_not_signaled(struct kunit *test)
+{
+	const struct ttm_bo_validate_test_case *params = test->param_value;
+	struct ttm_operation_ctx ctx_init = { },
+				 ctx_val  = { .no_wait_gpu = params->no_gpu_wait };
+	u32 fst_mem = TTM_PL_VRAM, snd_mem = TTM_PL_VRAM + 1;
+	struct ttm_placement *placement_init, *placement_val;
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	u32 size = ALIGN(BO_SIZE, PAGE_SIZE);
+	struct ttm_place *init_place, places[2];
+	struct ttm_resource_manager *man;
+	struct ttm_buffer_object *bo;
+	struct task_struct *task;
+	int err;
+
+	init_place = ttm_place_kunit_init(test, TTM_PL_SYSTEM, 0);
+	placement_init = ttm_placement_kunit_init(test, init_place, 1);
+
+	bo = kunit_kzalloc(test, sizeof(*bo), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo);
+
+	drm_gem_private_object_init(priv->drm, &bo->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo, bo_type, placement_init,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	ttm_mock_manager_init(priv->ttm_dev, fst_mem, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, snd_mem, MANAGER_SIZE);
+
+	places[0] = (struct ttm_place){ .mem_type = fst_mem, .flags = TTM_PL_FLAG_DESIRED };
+	places[1] = (struct ttm_place){ .mem_type = snd_mem, .flags = TTM_PL_FLAG_FALLBACK };
+	placement_val = ttm_placement_kunit_init(test, places, 2);
+
+	spin_lock_init(&fence_lock);
+	man = ttm_manager_type(priv->ttm_dev, fst_mem);
+	man->move = alloc_mock_fence(test);
+
+	task = kthread_create(threaded_fence_signal, man->move, "move-fence-signal");
+	if (IS_ERR(task))
+		KUNIT_FAIL(test, "Couldn't create move fence signal task\n");
+
+	wake_up_process(task);
+	err = ttm_bo_validate(bo, placement_val, &ctx_val);
+	dma_resv_unlock(bo->base.resv);
+
+	dma_fence_wait_timeout(man->move, false, MAX_SCHEDULE_TIMEOUT);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, size);
+
+	if (params->no_gpu_wait)
+		KUNIT_EXPECT_EQ(test, bo->resource->mem_type, snd_mem);
+	else
+		KUNIT_EXPECT_EQ(test, bo->resource->mem_type, fst_mem);
+
+	ttm_bo_put(bo);
+	ttm_mock_manager_fini(priv->ttm_dev, fst_mem);
+	ttm_mock_manager_fini(priv->ttm_dev, snd_mem);
+}
+
+static void ttm_bo_validate_swapout(struct kunit *test)
+{
+	unsigned long size_big, size = ALIGN(BO_SIZE, PAGE_SIZE);
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_buffer_object *bo_small, *bo_big;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_operation_ctx ctx = { };
+	struct ttm_placement *placement;
+	u32 mem_type = TTM_PL_TT;
+	struct ttm_place *place;
+	struct sysinfo si;
+	int err;
+
+	si_meminfo(&si);
+	size_big = ALIGN(((u64)si.totalram * si.mem_unit / 2), PAGE_SIZE);
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, size_big + size);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_small = kunit_kzalloc(test, sizeof(*bo_small), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_small);
+
+	drm_gem_private_object_init(priv->drm, &bo_small->base, size);
+
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_small, bo_type, placement,
+				   PAGE_SIZE, &ctx, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_small->base.resv);
+
+	bo_big = ttm_bo_kunit_init(test, priv, size_big, NULL);
+
+	dma_resv_lock(bo_big->base.resv, NULL);
+	err = ttm_bo_validate(bo_big, placement, &ctx);
+	dma_resv_unlock(bo_big->base.resv);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_NOT_NULL(test, bo_big->resource);
+	KUNIT_EXPECT_EQ(test, bo_big->resource->mem_type, mem_type);
+	KUNIT_EXPECT_EQ(test, bo_small->resource->mem_type, TTM_PL_SYSTEM);
+	KUNIT_EXPECT_TRUE(test, bo_small->ttm->page_flags & TTM_TT_FLAG_SWAPPED);
+
+	ttm_bo_put(bo_big);
+	ttm_bo_put(bo_small);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+}
+
+static void ttm_bo_validate_happy_evict(struct kunit *test)
+{
+	u32 mem_type = TTM_PL_VRAM, mem_multihop = TTM_PL_TT,
+	    mem_type_evict = TTM_PL_SYSTEM;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	u32 small = SZ_8K, medium = SZ_512K,
+	    big = MANAGER_SIZE - (small + medium);
+	u32 bo_sizes[] = { small, medium, big };
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_buffer_object *bos, *bo_val;
+	struct ttm_placement *placement;
+	struct ttm_place *place;
+	u32 bo_no = 3;
+	int i, err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, mem_multihop, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bos = kunit_kmalloc_array(test, bo_no, sizeof(*bos), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bos);
+
+	memset(bos, 0, sizeof(*bos) * bo_no);
+	for (i = 0; i < bo_no; i++) {
+		drm_gem_private_object_init(priv->drm, &bos[i].base, bo_sizes[i]);
+		err = ttm_bo_init_reserved(priv->ttm_dev, &bos[i], bo_type, placement,
+					   PAGE_SIZE, &ctx_init, NULL, NULL,
+					   &dummy_ttm_bo_destroy);
+		dma_resv_unlock(bos[i].base.resv);
+	}
+
+	bo_val = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo_val->type = bo_type;
+
+	ttm_bo_reserve(bo_val, false, false, NULL);
+	err = ttm_bo_validate(bo_val, placement, &ctx_val);
+	ttm_bo_unreserve(bo_val);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, bos[0].resource->mem_type, mem_type_evict);
+	KUNIT_EXPECT_TRUE(test, bos[0].ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC);
+	KUNIT_EXPECT_TRUE(test, bos[0].ttm->page_flags & TTM_TT_FLAG_PRIV_POPULATED);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, small * 2 + BO_SIZE);
+	KUNIT_EXPECT_EQ(test, bos[1].resource->mem_type, mem_type);
+
+	for (i = 0; i < bo_no; i++)
+		ttm_bo_put(&bos[i]);
+	ttm_bo_put(bo_val);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_multihop);
+}
+
+static void ttm_bo_validate_all_pinned_evict(struct kunit *test)
+{
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_buffer_object *bo_big, *bo_small;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_placement *placement;
+	u32 mem_type = TTM_PL_VRAM, mem_multihop = TTM_PL_TT;
+	struct ttm_place *place;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, mem_multihop, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_big = kunit_kzalloc(test, sizeof(*bo_big), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_big);
+
+	drm_gem_private_object_init(priv->drm, &bo_big->base, MANAGER_SIZE);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_big, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	ttm_bo_pin(bo_big);
+	dma_resv_unlock(bo_big->base.resv);
+
+	bo_small = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo_small->type = bo_type;
+
+	ttm_bo_reserve(bo_small, false, false, NULL);
+	err = ttm_bo_validate(bo_small, placement, &ctx_val);
+	ttm_bo_unreserve(bo_small);
+
+	KUNIT_EXPECT_EQ(test, err, -ENOMEM);
+
+	ttm_bo_put(bo_small);
+
+	ttm_bo_reserve(bo_big, false, false, NULL);
+	ttm_bo_unpin(bo_big);
+	dma_resv_unlock(bo_big->base.resv);
+	ttm_bo_put(bo_big);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_multihop);
+}
+
+static void ttm_bo_validate_allowed_only_evict(struct kunit *test)
+{
+	u32 mem_type = TTM_PL_VRAM, mem_multihop = TTM_PL_TT,
+	    mem_type_evict = TTM_PL_SYSTEM;
+	struct ttm_buffer_object *bo, *bo_evictable, *bo_pinned;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_placement *placement;
+	struct ttm_place *place;
+	u32 size = SZ_512K;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, mem_multihop, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_pinned = kunit_kzalloc(test, sizeof(*bo_pinned), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_pinned);
+
+	drm_gem_private_object_init(priv->drm, &bo_pinned->base, size);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_pinned, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	ttm_bo_pin(bo_pinned);
+	dma_resv_unlock(bo_pinned->base.resv);
+
+	bo_evictable = kunit_kzalloc(test, sizeof(*bo_evictable), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_evictable);
+
+	drm_gem_private_object_init(priv->drm, &bo_evictable->base, size);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_evictable, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_evictable->base.resv);
+
+	bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo->type = bo_type;
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx_val);
+	ttm_bo_unreserve(bo);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, mem_type);
+	KUNIT_EXPECT_EQ(test, bo_pinned->resource->mem_type, mem_type);
+	KUNIT_EXPECT_EQ(test, bo_evictable->resource->mem_type, mem_type_evict);
+	KUNIT_EXPECT_EQ(test, ctx_val.bytes_moved, size * 2 + BO_SIZE);
+
+	ttm_bo_put(bo);
+	ttm_bo_put(bo_evictable);
+
+	ttm_bo_reserve(bo_pinned, false, false, NULL);
+	ttm_bo_unpin(bo_pinned);
+	dma_resv_unlock(bo_pinned->base.resv);
+	ttm_bo_put(bo_pinned);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_multihop);
+}
+
+static void ttm_bo_validate_deleted_evict(struct kunit *test)
+{
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	u32 small = SZ_8K, big = MANAGER_SIZE - BO_SIZE;
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_buffer_object *bo_big, *bo_small;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_resource_manager *man;
+	u32 mem_type = TTM_PL_VRAM;
+	struct ttm_placement *placement;
+	struct ttm_place *place;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	man = ttm_manager_type(priv->ttm_dev, mem_type);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_big = kunit_kzalloc(test, sizeof(*bo_big), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_big);
+
+	drm_gem_private_object_init(priv->drm, &bo_big->base, big);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_big, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, ttm_resource_manager_usage(man), big);
+
+	dma_resv_unlock(bo_big->base.resv);
+	bo_big->deleted = true;
+
+	bo_small = ttm_bo_kunit_init(test, test->priv, small, NULL);
+	bo_small->type = bo_type;
+
+	ttm_bo_reserve(bo_small, false, false, NULL);
+	err = ttm_bo_validate(bo_small, placement, &ctx_val);
+	ttm_bo_unreserve(bo_small);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, bo_small->resource->mem_type, mem_type);
+	KUNIT_EXPECT_EQ(test, ttm_resource_manager_usage(man), small);
+	KUNIT_EXPECT_NULL(test, bo_big->ttm);
+	KUNIT_EXPECT_NULL(test, bo_big->resource);
+
+	ttm_bo_put(bo_small);
+	ttm_bo_put(bo_big);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+}
+
+static void ttm_bo_validate_busy_domain_evict(struct kunit *test)
+{
+	u32 mem_type = TTM_PL_VRAM, mem_type_evict = TTM_PL_MOCK1;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_buffer_object *bo_init, *bo_val;
+	struct ttm_placement *placement;
+	struct ttm_place *place;
+	int err;
+
+	/*
+	 * Drop the default device and setup a new one that points to busy
+	 * thus unsuitable eviction domain
+	 */
+	ttm_device_fini(priv->ttm_dev);
+
+	err = ttm_device_kunit_init_bad_evict(test->priv, priv->ttm_dev, false, false);
+	KUNIT_ASSERT_EQ(test, err, 0);
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	ttm_busy_manager_init(priv->ttm_dev, mem_type_evict, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_init = kunit_kzalloc(test, sizeof(*bo_init), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_init);
+
+	drm_gem_private_object_init(priv->drm, &bo_init->base, MANAGER_SIZE);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_init, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_init->base.resv);
+
+	bo_val = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo_val->type = bo_type;
+
+	ttm_bo_reserve(bo_val, false, false, NULL);
+	err = ttm_bo_validate(bo_val, placement, &ctx_val);
+	ttm_bo_unreserve(bo_val);
+
+	KUNIT_EXPECT_EQ(test, err, -ENOMEM);
+	KUNIT_EXPECT_EQ(test, bo_init->resource->mem_type, mem_type);
+	KUNIT_EXPECT_NULL(test, bo_val->resource);
+
+	ttm_bo_put(bo_init);
+	ttm_bo_put(bo_val);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+	ttm_bad_manager_fini(priv->ttm_dev, mem_type_evict);
+}
+
+static void ttm_bo_validate_evict_gutting(struct kunit *test)
+{
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_buffer_object *bo, *bo_evict;
+	u32 mem_type = TTM_PL_MOCK1;
+	struct ttm_placement *placement;
+	struct ttm_place *place;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+
+	place = ttm_place_kunit_init(test, mem_type, 0);
+	placement = ttm_placement_kunit_init(test, place, 1);
+
+	bo_evict = kunit_kzalloc(test, sizeof(*bo_evict), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_evict);
+
+	drm_gem_private_object_init(priv->drm, &bo_evict->base, MANAGER_SIZE);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_evict, bo_type, placement,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_evict->base.resv);
+
+	bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo->type = bo_type;
+
+	ttm_bo_reserve(bo, false, false, NULL);
+	err = ttm_bo_validate(bo, placement, &ctx_val);
+	ttm_bo_unreserve(bo);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+	KUNIT_EXPECT_EQ(test, bo->resource->mem_type, mem_type);
+	KUNIT_ASSERT_NULL(test, bo_evict->resource);
+	KUNIT_ASSERT_TRUE(test, bo_evict->ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC);
+
+	ttm_bo_put(bo_evict);
+	ttm_bo_put(bo);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+}
+
+static void ttm_bo_validate_recrusive_evict(struct kunit *test)
+{
+	u32 mem_type = TTM_PL_TT, mem_type_evict = TTM_PL_MOCK2;
+	struct ttm_operation_ctx ctx_init = { }, ctx_val  = { };
+	struct ttm_placement *placement_tt, *placement_mock;
+	struct ttm_buffer_object *bo_tt, *bo_mock, *bo_val;
+	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct ttm_test_devices *priv = test->priv;
+	struct ttm_place *place_tt, *place_mock;
+	int err;
+
+	ttm_mock_manager_init(priv->ttm_dev, mem_type, MANAGER_SIZE);
+	ttm_mock_manager_init(priv->ttm_dev, mem_type_evict, MANAGER_SIZE);
+
+	place_tt = ttm_place_kunit_init(test, mem_type, 0);
+	place_mock = ttm_place_kunit_init(test, mem_type_evict, 0);
+
+	placement_tt = ttm_placement_kunit_init(test, place_tt, 1);
+	placement_mock = ttm_placement_kunit_init(test, place_mock, 1);
+
+	bo_tt = kunit_kzalloc(test, sizeof(*bo_tt), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_tt);
+
+	bo_mock = kunit_kzalloc(test, sizeof(*bo_mock), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, bo_mock);
+
+	drm_gem_private_object_init(priv->drm, &bo_tt->base, MANAGER_SIZE);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_tt, bo_type, placement_tt,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_tt->base.resv);
+
+	drm_gem_private_object_init(priv->drm, &bo_mock->base, MANAGER_SIZE);
+	err = ttm_bo_init_reserved(priv->ttm_dev, bo_mock, bo_type, placement_mock,
+				   PAGE_SIZE, &ctx_init, NULL, NULL,
+				   &dummy_ttm_bo_destroy);
+	KUNIT_EXPECT_EQ(test, err, 0);
+	dma_resv_unlock(bo_mock->base.resv);
+
+	bo_val = ttm_bo_kunit_init(test, test->priv, BO_SIZE, NULL);
+	bo_val->type = bo_type;
+
+	ttm_bo_reserve(bo_val, false, false, NULL);
+	err = ttm_bo_validate(bo_val, placement_tt, &ctx_val);
+	ttm_bo_unreserve(bo_val);
+
+	KUNIT_EXPECT_EQ(test, err, 0);
+
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type);
+	ttm_mock_manager_fini(priv->ttm_dev, mem_type_evict);
+
+	ttm_bo_put(bo_val);
+	ttm_bo_put(bo_tt);
+	ttm_bo_put(bo_mock);
+}
+
+static struct kunit_case ttm_bo_validate_test_cases[] = {
+	KUNIT_CASE_PARAM(ttm_bo_init_reserved_sys_man, ttm_bo_types_gen_params),
+	KUNIT_CASE_PARAM(ttm_bo_init_reserved_mock_man, ttm_bo_types_gen_params),
+	KUNIT_CASE(ttm_bo_init_reserved_resv),
+	KUNIT_CASE_PARAM(ttm_bo_validate_basic, ttm_bo_types_gen_params),
+	KUNIT_CASE(ttm_bo_validate_invalid_placement),
+	KUNIT_CASE_PARAM(ttm_bo_validate_same_placement,
+			 ttm_bo_validate_mem_gen_params),
+	KUNIT_CASE(ttm_bo_validate_failed_alloc),
+	KUNIT_CASE(ttm_bo_validate_pinned),
+	KUNIT_CASE(ttm_bo_validate_busy_placement),
+	KUNIT_CASE_PARAM(ttm_bo_validate_multihop, ttm_bo_types_gen_params),
+	KUNIT_CASE_PARAM(ttm_bo_validate_no_placement_signaled,
+			 ttm_bo_no_placement_gen_params),
+	KUNIT_CASE_PARAM(ttm_bo_validate_no_placement_not_signaled,
+			 ttm_bo_types_gen_params),
+	KUNIT_CASE(ttm_bo_validate_move_fence_signaled),
+	KUNIT_CASE_PARAM(ttm_bo_validate_move_fence_not_signaled,
+			 ttm_bo_validate_wait_gen_params),
+	KUNIT_CASE(ttm_bo_validate_swapout),
+	KUNIT_CASE(ttm_bo_validate_happy_evict),
+	KUNIT_CASE(ttm_bo_validate_all_pinned_evict),
+	KUNIT_CASE(ttm_bo_validate_allowed_only_evict),
+	KUNIT_CASE(ttm_bo_validate_deleted_evict),
+	KUNIT_CASE(ttm_bo_validate_busy_domain_evict),
+	KUNIT_CASE(ttm_bo_validate_evict_gutting),
+	KUNIT_CASE(ttm_bo_validate_recrusive_evict),
+	{}
+};
+
+static struct kunit_suite ttm_bo_validate_test_suite = {
+	.name = "ttm_bo_validate",
+	.init = ttm_test_devices_all_init,
+	.exit = ttm_test_devices_fini,
+	.test_cases = ttm_bo_validate_test_cases,
+};
+
+kunit_test_suites(&ttm_bo_validate_test_suite);
+
+MODULE_DESCRIPTION("KUnit tests for ttm_bo APIs");
+MODULE_LICENSE("GPL and additional rights");