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authorChris Wilson <chris@chris-wilson.co.uk>2019-05-28 10:29:47 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2019-05-28 12:45:29 +0100
commitb414fcd5be0b0045635ba18efbe04ed662d86fe8 (patch)
treeae6cea329188849902efae5732a0fd88cc99081e /drivers/gpu/drm/i915/selftests/i915_gem_object.c
parentf033428db28bdff19105e6050de77f857dabf5b8 (diff)
drm/i915: Move mmap and friends to its own file
Continuing the decluttering of i915_gem.c, now the turn of do_mmap and the faulthandlers Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190528092956.14910-6-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem_object.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_gem_object.c487
1 files changed, 0 insertions, 487 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
index b98a286a8be5..a3dd2f1be95b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
@@ -89,491 +89,6 @@ out:
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_create(i915->engine[RCS0]->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);
-
- intel_gt_pm_get(i915);
-
- cancel_delayed_work_sync(&i915->gem.retire_work);
- flush_work(&i915->gem.idle_work);
-}
-
-static void restore_retire_worker(struct drm_i915_private *i915)
-{
- intel_gt_pm_put(i915);
-
- mutex_lock(&i915->drm.struct_mutex);
- igt_flush_test(i915, I915_WAIT_LOCKED);
- mutex_unlock(&i915->drm.struct_mutex);
-
- i915_gem_shrinker_register(i915);
-}
-
-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:
- restore_retire_worker(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[] = {
@@ -596,8 +111,6 @@ 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);