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Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem_object.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_gem_object.c659
1 files changed, 0 insertions, 659 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
deleted file mode 100644
index 971148fbe6f5..000000000000
--- a/drivers/gpu/drm/i915/selftests/i915_gem_object.c
+++ /dev/null
@@ -1,659 +0,0 @@
-/*
- * Copyright © 2016 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 "../i915_selftest.h"
-
-#include "mock_gem_device.h"
-#include "huge_gem_object.h"
-
-static int igt_gem_object(void *arg)
-{
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
- int err = -ENOMEM;
-
- /* Basic test to ensure we can create an object */
-
- obj = i915_gem_object_create(i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- pr_err("i915_gem_object_create failed, err=%d\n", err);
- goto out;
- }
-
- err = 0;
- i915_gem_object_put(obj);
-out:
- return err;
-}
-
-static int igt_phys_object(void *arg)
-{
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
- int err;
-
- /* Create an object and bind it to a contiguous set of physical pages,
- * i.e. exercise the i915_gem_object_phys API.
- */
-
- obj = i915_gem_object_create(i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- pr_err("i915_gem_object_create failed, err=%d\n", err);
- goto out;
- }
-
- mutex_lock(&i915->drm.struct_mutex);
- err = i915_gem_object_attach_phys(obj, PAGE_SIZE);
- mutex_unlock(&i915->drm.struct_mutex);
- if (err) {
- pr_err("i915_gem_object_attach_phys failed, err=%d\n", err);
- goto out_obj;
- }
-
- if (obj->ops != &i915_gem_phys_ops) {
- pr_err("i915_gem_object_attach_phys did not create a phys object\n");
- err = -EINVAL;
- goto out_obj;
- }
-
- if (!atomic_read(&obj->mm.pages_pin_count)) {
- pr_err("i915_gem_object_attach_phys did not pin its phys pages\n");
- err = -EINVAL;
- goto out_obj;
- }
-
- /* Make the object dirty so that put_pages must do copy back the data */
- mutex_lock(&i915->drm.struct_mutex);
- err = i915_gem_object_set_to_gtt_domain(obj, true);
- mutex_unlock(&i915->drm.struct_mutex);
- if (err) {
- pr_err("i915_gem_object_set_to_gtt_domain failed with err=%d\n",
- err);
- goto out_obj;
- }
-
-out_obj:
- i915_gem_object_put(obj);
-out:
- return err;
-}
-
-static int igt_gem_huge(void *arg)
-{
- const unsigned int nreal = 509; /* just to be awkward */
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
- unsigned int n;
- int err;
-
- /* Basic sanitycheck of our huge fake object allocation */
-
- obj = huge_gem_object(i915,
- nreal * PAGE_SIZE,
- i915->ggtt.vm.total + PAGE_SIZE);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
- err = i915_gem_object_pin_pages(obj);
- if (err) {
- pr_err("Failed to allocate %u pages (%lu total), err=%d\n",
- nreal, obj->base.size / PAGE_SIZE, err);
- goto out;
- }
-
- for (n = 0; n < obj->base.size / PAGE_SIZE; n++) {
- if (i915_gem_object_get_page(obj, n) !=
- i915_gem_object_get_page(obj, n % nreal)) {
- pr_err("Page lookup mismatch at index %u [%u]\n",
- n, n % nreal);
- err = -EINVAL;
- goto out_unpin;
- }
- }
-
-out_unpin:
- i915_gem_object_unpin_pages(obj);
-out:
- i915_gem_object_put(obj);
- return err;
-}
-
-struct tile {
- unsigned int width;
- unsigned int height;
- unsigned int stride;
- unsigned int size;
- unsigned int tiling;
- unsigned int swizzle;
-};
-
-static u64 swizzle_bit(unsigned int bit, u64 offset)
-{
- return (offset & BIT_ULL(bit)) >> (bit - 6);
-}
-
-static u64 tiled_offset(const struct tile *tile, u64 v)
-{
- u64 x, y;
-
- if (tile->tiling == I915_TILING_NONE)
- return v;
-
- y = div64_u64_rem(v, tile->stride, &x);
- v = div64_u64_rem(y, tile->height, &y) * tile->stride * tile->height;
-
- if (tile->tiling == I915_TILING_X) {
- v += y * tile->width;
- v += div64_u64_rem(x, tile->width, &x) << tile->size;
- v += x;
- } else if (tile->width == 128) {
- const unsigned int ytile_span = 16;
- const unsigned int ytile_height = 512;
-
- v += y * ytile_span;
- v += div64_u64_rem(x, ytile_span, &x) * ytile_height;
- v += x;
- } else {
- const unsigned int ytile_span = 32;
- const unsigned int ytile_height = 256;
-
- v += y * ytile_span;
- v += div64_u64_rem(x, ytile_span, &x) * ytile_height;
- v += x;
- }
-
- switch (tile->swizzle) {
- case I915_BIT_6_SWIZZLE_9:
- v ^= swizzle_bit(9, v);
- break;
- case I915_BIT_6_SWIZZLE_9_10:
- v ^= swizzle_bit(9, v) ^ swizzle_bit(10, v);
- break;
- case I915_BIT_6_SWIZZLE_9_11:
- v ^= swizzle_bit(9, v) ^ swizzle_bit(11, v);
- break;
- case I915_BIT_6_SWIZZLE_9_10_11:
- v ^= swizzle_bit(9, v) ^ swizzle_bit(10, v) ^ swizzle_bit(11, v);
- break;
- }
-
- return v;
-}
-
-static int check_partial_mapping(struct drm_i915_gem_object *obj,
- const struct tile *tile,
- unsigned long end_time)
-{
- const unsigned int nreal = obj->scratch / PAGE_SIZE;
- const unsigned long npages = obj->base.size / PAGE_SIZE;
- struct i915_vma *vma;
- unsigned long page;
- int err;
-
- if (igt_timeout(end_time,
- "%s: timed out before tiling=%d stride=%d\n",
- __func__, tile->tiling, tile->stride))
- return -EINTR;
-
- err = i915_gem_object_set_tiling(obj, tile->tiling, tile->stride);
- if (err) {
- pr_err("Failed to set tiling mode=%u, stride=%u, err=%d\n",
- tile->tiling, tile->stride, err);
- return err;
- }
-
- GEM_BUG_ON(i915_gem_object_get_tiling(obj) != tile->tiling);
- GEM_BUG_ON(i915_gem_object_get_stride(obj) != tile->stride);
-
- for_each_prime_number_from(page, 1, npages) {
- struct i915_ggtt_view view =
- compute_partial_view(obj, page, MIN_CHUNK_PAGES);
- u32 __iomem *io;
- struct page *p;
- unsigned int n;
- u64 offset;
- u32 *cpu;
-
- GEM_BUG_ON(view.partial.size > nreal);
- cond_resched();
-
- err = i915_gem_object_set_to_gtt_domain(obj, true);
- if (err) {
- pr_err("Failed to flush to GTT write domain; err=%d\n",
- err);
- return err;
- }
-
- vma = i915_gem_object_ggtt_pin(obj, &view, 0, 0, PIN_MAPPABLE);
- if (IS_ERR(vma)) {
- pr_err("Failed to pin partial view: offset=%lu; err=%d\n",
- page, (int)PTR_ERR(vma));
- return PTR_ERR(vma);
- }
-
- n = page - view.partial.offset;
- GEM_BUG_ON(n >= view.partial.size);
-
- io = i915_vma_pin_iomap(vma);
- i915_vma_unpin(vma);
- if (IS_ERR(io)) {
- pr_err("Failed to iomap partial view: offset=%lu; err=%d\n",
- page, (int)PTR_ERR(io));
- return PTR_ERR(io);
- }
-
- iowrite32(page, io + n * PAGE_SIZE/sizeof(*io));
- i915_vma_unpin_iomap(vma);
-
- offset = tiled_offset(tile, page << PAGE_SHIFT);
- if (offset >= obj->base.size)
- continue;
-
- flush_write_domain(obj, ~I915_GEM_DOMAIN_CPU);
-
- p = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT);
- cpu = kmap(p) + offset_in_page(offset);
- drm_clflush_virt_range(cpu, sizeof(*cpu));
- if (*cpu != (u32)page) {
- pr_err("Partial view for %lu [%u] (offset=%llu, size=%u [%llu, row size %u], fence=%d, tiling=%d, stride=%d) misalignment, expected write to page (%llu + %u [0x%llx]) of 0x%x, found 0x%x\n",
- page, n,
- view.partial.offset,
- view.partial.size,
- vma->size >> PAGE_SHIFT,
- tile->tiling ? tile_row_pages(obj) : 0,
- vma->fence ? vma->fence->id : -1, tile->tiling, tile->stride,
- offset >> PAGE_SHIFT,
- (unsigned int)offset_in_page(offset),
- offset,
- (u32)page, *cpu);
- err = -EINVAL;
- }
- *cpu = 0;
- drm_clflush_virt_range(cpu, sizeof(*cpu));
- kunmap(p);
- if (err)
- return err;
-
- i915_vma_destroy(vma);
- }
-
- return 0;
-}
-
-static int igt_partial_tiling(void *arg)
-{
- const unsigned int nreal = 1 << 12; /* largest tile row x2 */
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
- intel_wakeref_t wakeref;
- int tiling;
- int err;
-
- /* We want to check the page mapping and fencing of a large object
- * mmapped through the GTT. The object we create is larger than can
- * possibly be mmaped as a whole, and so we must use partial GGTT vma.
- * We then check that a write through each partial GGTT vma ends up
- * in the right set of pages within the object, and with the expected
- * tiling, which we verify by manual swizzling.
- */
-
- obj = huge_gem_object(i915,
- nreal << PAGE_SHIFT,
- (1 + next_prime_number(i915->ggtt.vm.total >> PAGE_SHIFT)) << PAGE_SHIFT);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
- err = i915_gem_object_pin_pages(obj);
- if (err) {
- pr_err("Failed to allocate %u pages (%lu total), err=%d\n",
- nreal, obj->base.size / PAGE_SIZE, err);
- goto out;
- }
-
- mutex_lock(&i915->drm.struct_mutex);
- wakeref = intel_runtime_pm_get(i915);
-
- if (1) {
- IGT_TIMEOUT(end);
- struct tile tile;
-
- tile.height = 1;
- tile.width = 1;
- tile.size = 0;
- tile.stride = 0;
- tile.swizzle = I915_BIT_6_SWIZZLE_NONE;
- tile.tiling = I915_TILING_NONE;
-
- err = check_partial_mapping(obj, &tile, end);
- if (err && err != -EINTR)
- goto out_unlock;
- }
-
- for (tiling = I915_TILING_X; tiling <= I915_TILING_Y; tiling++) {
- IGT_TIMEOUT(end);
- unsigned int max_pitch;
- unsigned int pitch;
- struct tile tile;
-
- if (i915->quirks & QUIRK_PIN_SWIZZLED_PAGES)
- /*
- * The swizzling pattern is actually unknown as it
- * varies based on physical address of each page.
- * See i915_gem_detect_bit_6_swizzle().
- */
- break;
-
- tile.tiling = tiling;
- switch (tiling) {
- case I915_TILING_X:
- tile.swizzle = i915->mm.bit_6_swizzle_x;
- break;
- case I915_TILING_Y:
- tile.swizzle = i915->mm.bit_6_swizzle_y;
- break;
- }
-
- GEM_BUG_ON(tile.swizzle == I915_BIT_6_SWIZZLE_UNKNOWN);
- if (tile.swizzle == I915_BIT_6_SWIZZLE_9_17 ||
- tile.swizzle == I915_BIT_6_SWIZZLE_9_10_17)
- continue;
-
- if (INTEL_GEN(i915) <= 2) {
- tile.height = 16;
- tile.width = 128;
- tile.size = 11;
- } else if (tile.tiling == I915_TILING_Y &&
- HAS_128_BYTE_Y_TILING(i915)) {
- tile.height = 32;
- tile.width = 128;
- tile.size = 12;
- } else {
- tile.height = 8;
- tile.width = 512;
- tile.size = 12;
- }
-
- if (INTEL_GEN(i915) < 4)
- max_pitch = 8192 / tile.width;
- else if (INTEL_GEN(i915) < 7)
- max_pitch = 128 * I965_FENCE_MAX_PITCH_VAL / tile.width;
- else
- max_pitch = 128 * GEN7_FENCE_MAX_PITCH_VAL / tile.width;
-
- for (pitch = max_pitch; pitch; pitch >>= 1) {
- tile.stride = tile.width * pitch;
- err = check_partial_mapping(obj, &tile, end);
- if (err == -EINTR)
- goto next_tiling;
- if (err)
- goto out_unlock;
-
- if (pitch > 2 && INTEL_GEN(i915) >= 4) {
- tile.stride = tile.width * (pitch - 1);
- err = check_partial_mapping(obj, &tile, end);
- if (err == -EINTR)
- goto next_tiling;
- if (err)
- goto out_unlock;
- }
-
- if (pitch < max_pitch && INTEL_GEN(i915) >= 4) {
- tile.stride = tile.width * (pitch + 1);
- err = check_partial_mapping(obj, &tile, end);
- if (err == -EINTR)
- goto next_tiling;
- if (err)
- goto out_unlock;
- }
- }
-
- if (INTEL_GEN(i915) >= 4) {
- for_each_prime_number(pitch, max_pitch) {
- tile.stride = tile.width * pitch;
- err = check_partial_mapping(obj, &tile, end);
- if (err == -EINTR)
- goto next_tiling;
- if (err)
- goto out_unlock;
- }
- }
-
-next_tiling: ;
- }
-
-out_unlock:
- intel_runtime_pm_put(i915, wakeref);
- mutex_unlock(&i915->drm.struct_mutex);
- i915_gem_object_unpin_pages(obj);
-out:
- i915_gem_object_put(obj);
- return err;
-}
-
-static int make_obj_busy(struct drm_i915_gem_object *obj)
-{
- struct drm_i915_private *i915 = to_i915(obj->base.dev);
- struct i915_request *rq;
- struct i915_vma *vma;
- int err;
-
- vma = i915_vma_instance(obj, &i915->ggtt.vm, NULL);
- if (IS_ERR(vma))
- return PTR_ERR(vma);
-
- err = i915_vma_pin(vma, 0, 0, PIN_USER);
- if (err)
- return err;
-
- rq = i915_request_alloc(i915->engine[RCS0], i915->kernel_context);
- if (IS_ERR(rq)) {
- i915_vma_unpin(vma);
- return PTR_ERR(rq);
- }
-
- err = i915_vma_move_to_active(vma, rq, EXEC_OBJECT_WRITE);
-
- i915_request_add(rq);
-
- __i915_gem_object_release_unless_active(obj);
- i915_vma_unpin(vma);
-
- return err;
-}
-
-static bool assert_mmap_offset(struct drm_i915_private *i915,
- unsigned long size,
- int expected)
-{
- struct drm_i915_gem_object *obj;
- int err;
-
- obj = i915_gem_object_create_internal(i915, size);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
- err = i915_gem_object_create_mmap_offset(obj);
- i915_gem_object_put(obj);
-
- return err == expected;
-}
-
-static void disable_retire_worker(struct drm_i915_private *i915)
-{
- i915_gem_shrinker_unregister(i915);
-
- mutex_lock(&i915->drm.struct_mutex);
- if (!i915->gt.active_requests++) {
- intel_wakeref_t wakeref;
-
- with_intel_runtime_pm(i915, wakeref)
- i915_gem_unpark(i915);
- }
- mutex_unlock(&i915->drm.struct_mutex);
-
- cancel_delayed_work_sync(&i915->gt.retire_work);
- cancel_delayed_work_sync(&i915->gt.idle_work);
-}
-
-static int igt_mmap_offset_exhaustion(void *arg)
-{
- struct drm_i915_private *i915 = arg;
- struct drm_mm *mm = &i915->drm.vma_offset_manager->vm_addr_space_mm;
- struct drm_i915_gem_object *obj;
- struct drm_mm_node resv, *hole;
- u64 hole_start, hole_end;
- int loop, err;
-
- /* Disable background reaper */
- disable_retire_worker(i915);
- GEM_BUG_ON(!i915->gt.awake);
-
- /* Trim the device mmap space to only a page */
- memset(&resv, 0, sizeof(resv));
- drm_mm_for_each_hole(hole, mm, hole_start, hole_end) {
- resv.start = hole_start;
- resv.size = hole_end - hole_start - 1; /* PAGE_SIZE units */
- err = drm_mm_reserve_node(mm, &resv);
- if (err) {
- pr_err("Failed to trim VMA manager, err=%d\n", err);
- goto out_park;
- }
- break;
- }
-
- /* Just fits! */
- if (!assert_mmap_offset(i915, PAGE_SIZE, 0)) {
- pr_err("Unable to insert object into single page hole\n");
- err = -EINVAL;
- goto out;
- }
-
- /* Too large */
- if (!assert_mmap_offset(i915, 2*PAGE_SIZE, -ENOSPC)) {
- pr_err("Unexpectedly succeeded in inserting too large object into single page hole\n");
- err = -EINVAL;
- goto out;
- }
-
- /* Fill the hole, further allocation attempts should then fail */
- obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- goto out;
- }
-
- err = i915_gem_object_create_mmap_offset(obj);
- if (err) {
- pr_err("Unable to insert object into reclaimed hole\n");
- goto err_obj;
- }
-
- if (!assert_mmap_offset(i915, PAGE_SIZE, -ENOSPC)) {
- pr_err("Unexpectedly succeeded in inserting object into no holes!\n");
- err = -EINVAL;
- goto err_obj;
- }
-
- i915_gem_object_put(obj);
-
- /* Now fill with busy dead objects that we expect to reap */
- for (loop = 0; loop < 3; loop++) {
- intel_wakeref_t wakeref;
-
- if (i915_terminally_wedged(i915))
- break;
-
- obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- goto out;
- }
-
- err = 0;
- mutex_lock(&i915->drm.struct_mutex);
- with_intel_runtime_pm(i915, wakeref)
- err = make_obj_busy(obj);
- mutex_unlock(&i915->drm.struct_mutex);
- if (err) {
- pr_err("[loop %d] Failed to busy the object\n", loop);
- goto err_obj;
- }
-
- /* NB we rely on the _active_ reference to access obj now */
- GEM_BUG_ON(!i915_gem_object_is_active(obj));
- err = i915_gem_object_create_mmap_offset(obj);
- if (err) {
- pr_err("[loop %d] i915_gem_object_create_mmap_offset failed with err=%d\n",
- loop, err);
- goto out;
- }
- }
-
-out:
- drm_mm_remove_node(&resv);
-out_park:
- mutex_lock(&i915->drm.struct_mutex);
- if (--i915->gt.active_requests)
- queue_delayed_work(i915->wq, &i915->gt.retire_work, 0);
- else
- queue_delayed_work(i915->wq, &i915->gt.idle_work, 0);
- mutex_unlock(&i915->drm.struct_mutex);
- i915_gem_shrinker_register(i915);
- return err;
-err_obj:
- i915_gem_object_put(obj);
- goto out;
-}
-
-int i915_gem_object_mock_selftests(void)
-{
- static const struct i915_subtest tests[] = {
- SUBTEST(igt_gem_object),
- SUBTEST(igt_phys_object),
- };
- struct drm_i915_private *i915;
- int err;
-
- i915 = mock_gem_device();
- if (!i915)
- return -ENOMEM;
-
- err = i915_subtests(tests, i915);
-
- drm_dev_put(&i915->drm);
- return err;
-}
-
-int i915_gem_object_live_selftests(struct drm_i915_private *i915)
-{
- static const struct i915_subtest tests[] = {
- SUBTEST(igt_gem_huge),
- SUBTEST(igt_partial_tiling),
- SUBTEST(igt_mmap_offset_exhaustion),
- };
-
- return i915_subtests(tests, i915);
-}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-12 10:17:53 +0200