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path: root/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
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Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem_gtt.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_gem_gtt.c360
1 files changed, 3 insertions, 357 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 01e75160a84a..154801f1c468 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -69,8 +69,10 @@ static int fake_get_pages(struct drm_i915_gem_object *obj)
rem = round_up(obj->base.size, BIT(31)) >> 31;
/* restricted by sg_alloc_table */
- if (overflows_type(rem, unsigned int))
+ if (overflows_type(rem, unsigned int)) {
+ kfree(pages);
return -E2BIG;
+ }
if (sg_alloc_table(pages, rem, GFP)) {
kfree(pages);
@@ -1940,361 +1942,6 @@ out_put:
return err;
}
-static int context_sync(struct intel_context *ce)
-{
- struct i915_request *rq;
- long timeout;
-
- rq = intel_context_create_request(ce);
- if (IS_ERR(rq))
- return PTR_ERR(rq);
-
- i915_request_get(rq);
- i915_request_add(rq);
-
- timeout = i915_request_wait(rq, 0, HZ / 5);
- i915_request_put(rq);
-
- return timeout < 0 ? -EIO : 0;
-}
-
-static struct i915_request *
-submit_batch(struct intel_context *ce, u64 addr)
-{
- struct i915_request *rq;
- int err;
-
- rq = intel_context_create_request(ce);
- if (IS_ERR(rq))
- return rq;
-
- err = 0;
- if (rq->engine->emit_init_breadcrumb) /* detect a hang */
- err = rq->engine->emit_init_breadcrumb(rq);
- if (err == 0)
- err = rq->engine->emit_bb_start(rq, addr, 0, 0);
-
- if (err == 0)
- i915_request_get(rq);
- i915_request_add(rq);
-
- return err ? ERR_PTR(err) : rq;
-}
-
-static u32 *spinner(u32 *batch, int i)
-{
- return batch + i * 64 / sizeof(*batch) + 4;
-}
-
-static void end_spin(u32 *batch, int i)
-{
- *spinner(batch, i) = MI_BATCH_BUFFER_END;
- wmb();
-}
-
-static int igt_cs_tlb(void *arg)
-{
- const unsigned int count = PAGE_SIZE / 64;
- const unsigned int chunk_size = count * PAGE_SIZE;
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *bbe, *act, *out;
- struct i915_gem_engines_iter it;
- struct i915_address_space *vm;
- struct i915_gem_context *ctx;
- struct intel_context *ce;
- struct i915_vma *vma;
- I915_RND_STATE(prng);
- struct file *file;
- unsigned int i;
- u32 *result;
- u32 *batch;
- int err = 0;
-
- /*
- * Our mission here is to fool the hardware to execute something
- * from scratch as it has not seen the batch move (due to missing
- * the TLB invalidate).
- */
-
- file = mock_file(i915);
- if (IS_ERR(file))
- return PTR_ERR(file);
-
- ctx = live_context(i915, file);
- if (IS_ERR(ctx)) {
- err = PTR_ERR(ctx);
- goto out_unlock;
- }
-
- vm = i915_gem_context_get_eb_vm(ctx);
- if (i915_is_ggtt(vm))
- goto out_vm;
-
- /* Create two pages; dummy we prefill the TLB, and intended */
- bbe = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(bbe)) {
- err = PTR_ERR(bbe);
- goto out_vm;
- }
-
- batch = i915_gem_object_pin_map_unlocked(bbe, I915_MAP_WC);
- if (IS_ERR(batch)) {
- err = PTR_ERR(batch);
- goto out_put_bbe;
- }
- memset32(batch, MI_BATCH_BUFFER_END, PAGE_SIZE / sizeof(u32));
- i915_gem_object_flush_map(bbe);
- i915_gem_object_unpin_map(bbe);
-
- act = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(act)) {
- err = PTR_ERR(act);
- goto out_put_bbe;
- }
-
- /* Track the execution of each request by writing into different slot */
- batch = i915_gem_object_pin_map_unlocked(act, I915_MAP_WC);
- if (IS_ERR(batch)) {
- err = PTR_ERR(batch);
- goto out_put_act;
- }
- for (i = 0; i < count; i++) {
- u32 *cs = batch + i * 64 / sizeof(*cs);
- u64 addr = (vm->total - PAGE_SIZE) + i * sizeof(u32);
-
- GEM_BUG_ON(GRAPHICS_VER(i915) < 6);
- cs[0] = MI_STORE_DWORD_IMM_GEN4;
- if (GRAPHICS_VER(i915) >= 8) {
- cs[1] = lower_32_bits(addr);
- cs[2] = upper_32_bits(addr);
- cs[3] = i;
- cs[4] = MI_NOOP;
- cs[5] = MI_BATCH_BUFFER_START_GEN8;
- } else {
- cs[1] = 0;
- cs[2] = lower_32_bits(addr);
- cs[3] = i;
- cs[4] = MI_NOOP;
- cs[5] = MI_BATCH_BUFFER_START;
- }
- }
-
- out = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(out)) {
- err = PTR_ERR(out);
- goto out_put_batch;
- }
- i915_gem_object_set_cache_coherency(out, I915_CACHING_CACHED);
-
- vma = i915_vma_instance(out, vm, NULL);
- if (IS_ERR(vma)) {
- err = PTR_ERR(vma);
- goto out_put_out;
- }
-
- err = i915_vma_pin(vma, 0, 0,
- PIN_USER |
- PIN_OFFSET_FIXED |
- (vm->total - PAGE_SIZE));
- if (err)
- goto out_put_out;
- GEM_BUG_ON(vma->node.start != vm->total - PAGE_SIZE);
-
- result = i915_gem_object_pin_map_unlocked(out, I915_MAP_WB);
- if (IS_ERR(result)) {
- err = PTR_ERR(result);
- goto out_put_out;
- }
-
- for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
- IGT_TIMEOUT(end_time);
- unsigned long pass = 0;
-
- if (!intel_engine_can_store_dword(ce->engine))
- continue;
-
- while (!__igt_timeout(end_time, NULL)) {
- struct i915_vm_pt_stash stash = {};
- struct i915_request *rq;
- struct i915_gem_ww_ctx ww;
- struct i915_vma_resource *vma_res;
- u64 offset;
-
- offset = igt_random_offset(&prng,
- 0, vm->total - PAGE_SIZE,
- chunk_size, PAGE_SIZE);
-
- memset32(result, STACK_MAGIC, PAGE_SIZE / sizeof(u32));
-
- vma = i915_vma_instance(bbe, vm, NULL);
- if (IS_ERR(vma)) {
- err = PTR_ERR(vma);
- goto end;
- }
-
- i915_gem_object_lock(bbe, NULL);
- err = i915_vma_get_pages(vma);
- i915_gem_object_unlock(bbe);
- if (err)
- goto end;
-
- vma_res = i915_vma_resource_alloc();
- if (IS_ERR(vma_res)) {
- i915_vma_put_pages(vma);
- err = PTR_ERR(vma_res);
- goto end;
- }
-
- i915_gem_ww_ctx_init(&ww, false);
-retry:
- err = i915_vm_lock_objects(vm, &ww);
- if (err)
- goto end_ww;
-
- err = i915_vm_alloc_pt_stash(vm, &stash, chunk_size);
- if (err)
- goto end_ww;
-
- err = i915_vm_map_pt_stash(vm, &stash);
- if (!err)
- vm->allocate_va_range(vm, &stash, offset, chunk_size);
- i915_vm_free_pt_stash(vm, &stash);
-end_ww:
- if (err == -EDEADLK) {
- err = i915_gem_ww_ctx_backoff(&ww);
- if (!err)
- goto retry;
- }
- i915_gem_ww_ctx_fini(&ww);
- if (err) {
- kfree(vma_res);
- goto end;
- }
-
- i915_vma_resource_init_from_vma(vma_res, vma);
- /* Prime the TLB with the dummy pages */
- for (i = 0; i < count; i++) {
- vma_res->start = offset + i * PAGE_SIZE;
- vm->insert_entries(vm, vma_res, I915_CACHE_NONE,
- 0);
-
- rq = submit_batch(ce, vma_res->start);
- if (IS_ERR(rq)) {
- err = PTR_ERR(rq);
- i915_vma_resource_fini(vma_res);
- kfree(vma_res);
- goto end;
- }
- i915_request_put(rq);
- }
- i915_vma_resource_fini(vma_res);
- i915_vma_put_pages(vma);
-
- err = context_sync(ce);
- if (err) {
- pr_err("%s: dummy setup timed out\n",
- ce->engine->name);
- kfree(vma_res);
- goto end;
- }
-
- vma = i915_vma_instance(act, vm, NULL);
- if (IS_ERR(vma)) {
- kfree(vma_res);
- err = PTR_ERR(vma);
- goto end;
- }
-
- i915_gem_object_lock(act, NULL);
- err = i915_vma_get_pages(vma);
- i915_gem_object_unlock(act);
- if (err) {
- kfree(vma_res);
- goto end;
- }
-
- i915_vma_resource_init_from_vma(vma_res, vma);
- /* Replace the TLB with target batches */
- for (i = 0; i < count; i++) {
- struct i915_request *rq;
- u32 *cs = batch + i * 64 / sizeof(*cs);
- u64 addr;
-
- vma_res->start = offset + i * PAGE_SIZE;
- vm->insert_entries(vm, vma_res, I915_CACHE_NONE, 0);
-
- addr = vma_res->start + i * 64;
- cs[4] = MI_NOOP;
- cs[6] = lower_32_bits(addr);
- cs[7] = upper_32_bits(addr);
- wmb();
-
- rq = submit_batch(ce, addr);
- if (IS_ERR(rq)) {
- err = PTR_ERR(rq);
- i915_vma_resource_fini(vma_res);
- kfree(vma_res);
- goto end;
- }
-
- /* Wait until the context chain has started */
- if (i == 0) {
- while (READ_ONCE(result[i]) &&
- !i915_request_completed(rq))
- cond_resched();
- } else {
- end_spin(batch, i - 1);
- }
-
- i915_request_put(rq);
- }
- end_spin(batch, count - 1);
-
- i915_vma_resource_fini(vma_res);
- kfree(vma_res);
- i915_vma_put_pages(vma);
-
- err = context_sync(ce);
- if (err) {
- pr_err("%s: writes timed out\n",
- ce->engine->name);
- goto end;
- }
-
- for (i = 0; i < count; i++) {
- if (result[i] != i) {
- pr_err("%s: Write lost on pass %lu, at offset %llx, index %d, found %x, expected %x\n",
- ce->engine->name, pass,
- offset, i, result[i], i);
- err = -EINVAL;
- goto end;
- }
- }
-
- vm->clear_range(vm, offset, chunk_size);
- pass++;
- }
- }
-end:
- if (igt_flush_test(i915))
- err = -EIO;
- i915_gem_context_unlock_engines(ctx);
- i915_gem_object_unpin_map(out);
-out_put_out:
- i915_gem_object_put(out);
-out_put_batch:
- i915_gem_object_unpin_map(act);
-out_put_act:
- i915_gem_object_put(act);
-out_put_bbe:
- i915_gem_object_put(bbe);
-out_vm:
- i915_vm_put(vm);
-out_unlock:
- fput(file);
- return err;
-}
-
int i915_gem_gtt_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
@@ -2314,7 +1961,6 @@ int i915_gem_gtt_live_selftests(struct drm_i915_private *i915)
SUBTEST(igt_ggtt_fill),
SUBTEST(igt_ggtt_page),
SUBTEST(igt_ggtt_misaligned_pin),
- SUBTEST(igt_cs_tlb),
};
GEM_BUG_ON(offset_in_page(to_gt(i915)->ggtt->vm.total));
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-19 00:37:40 +0000