2061 lines
46 KiB
C
2061 lines
46 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2016 Intel Corporation
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*/
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#include <linux/kthread.h>
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#include "gem/i915_gem_context.h"
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#include "gem/i915_gem_internal.h"
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#include "i915_gem_evict.h"
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#include "intel_gt.h"
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#include "intel_engine_heartbeat.h"
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#include "intel_engine_pm.h"
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#include "selftest_engine_heartbeat.h"
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#include "i915_selftest.h"
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#include "selftests/i915_random.h"
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#include "selftests/igt_flush_test.h"
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#include "selftests/igt_reset.h"
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#include "selftests/igt_atomic.h"
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#include "selftests/igt_spinner.h"
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#include "selftests/intel_scheduler_helpers.h"
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#include "selftests/mock_drm.h"
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#include "gem/selftests/mock_context.h"
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#include "gem/selftests/igt_gem_utils.h"
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#define IGT_IDLE_TIMEOUT 50 /* ms; time to wait after flushing between tests */
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struct hang {
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struct intel_gt *gt;
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struct drm_i915_gem_object *hws;
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struct drm_i915_gem_object *obj;
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struct i915_gem_context *ctx;
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u32 *seqno;
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u32 *batch;
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};
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static int hang_init(struct hang *h, struct intel_gt *gt)
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{
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void *vaddr;
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int err;
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memset(h, 0, sizeof(*h));
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h->gt = gt;
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h->ctx = kernel_context(gt->i915, NULL);
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if (IS_ERR(h->ctx))
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return PTR_ERR(h->ctx);
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GEM_BUG_ON(i915_gem_context_is_bannable(h->ctx));
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h->hws = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
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if (IS_ERR(h->hws)) {
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err = PTR_ERR(h->hws);
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goto err_ctx;
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}
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h->obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
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if (IS_ERR(h->obj)) {
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err = PTR_ERR(h->obj);
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goto err_hws;
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}
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i915_gem_object_set_cache_coherency(h->hws, I915_CACHE_LLC);
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vaddr = i915_gem_object_pin_map_unlocked(h->hws, I915_MAP_WB);
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if (IS_ERR(vaddr)) {
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err = PTR_ERR(vaddr);
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goto err_obj;
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}
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h->seqno = memset(vaddr, 0xff, PAGE_SIZE);
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vaddr = i915_gem_object_pin_map_unlocked(h->obj,
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i915_coherent_map_type(gt->i915, h->obj, false));
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if (IS_ERR(vaddr)) {
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err = PTR_ERR(vaddr);
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goto err_unpin_hws;
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}
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h->batch = vaddr;
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return 0;
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err_unpin_hws:
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i915_gem_object_unpin_map(h->hws);
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err_obj:
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i915_gem_object_put(h->obj);
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err_hws:
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i915_gem_object_put(h->hws);
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err_ctx:
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kernel_context_close(h->ctx);
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return err;
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}
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static u64 hws_address(const struct i915_vma *hws,
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const struct i915_request *rq)
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{
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return hws->node.start + offset_in_page(sizeof(u32)*rq->fence.context);
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}
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static int move_to_active(struct i915_vma *vma,
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struct i915_request *rq,
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unsigned int flags)
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{
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int err;
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i915_vma_lock(vma);
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err = i915_request_await_object(rq, vma->obj,
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flags & EXEC_OBJECT_WRITE);
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if (err == 0)
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err = i915_vma_move_to_active(vma, rq, flags);
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i915_vma_unlock(vma);
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return err;
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}
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static struct i915_request *
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hang_create_request(struct hang *h, struct intel_engine_cs *engine)
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{
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struct intel_gt *gt = h->gt;
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struct i915_address_space *vm = i915_gem_context_get_eb_vm(h->ctx);
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struct drm_i915_gem_object *obj;
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struct i915_request *rq = NULL;
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struct i915_vma *hws, *vma;
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unsigned int flags;
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void *vaddr;
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u32 *batch;
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int err;
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obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
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if (IS_ERR(obj)) {
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i915_vm_put(vm);
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return ERR_CAST(obj);
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}
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vaddr = i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(gt->i915, obj, false));
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if (IS_ERR(vaddr)) {
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i915_gem_object_put(obj);
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i915_vm_put(vm);
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return ERR_CAST(vaddr);
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}
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i915_gem_object_unpin_map(h->obj);
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i915_gem_object_put(h->obj);
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h->obj = obj;
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h->batch = vaddr;
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vma = i915_vma_instance(h->obj, vm, NULL);
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if (IS_ERR(vma)) {
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i915_vm_put(vm);
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return ERR_CAST(vma);
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}
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hws = i915_vma_instance(h->hws, vm, NULL);
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if (IS_ERR(hws)) {
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i915_vm_put(vm);
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return ERR_CAST(hws);
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}
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err = i915_vma_pin(vma, 0, 0, PIN_USER);
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if (err) {
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i915_vm_put(vm);
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return ERR_PTR(err);
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}
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err = i915_vma_pin(hws, 0, 0, PIN_USER);
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if (err)
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goto unpin_vma;
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rq = igt_request_alloc(h->ctx, engine);
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if (IS_ERR(rq)) {
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err = PTR_ERR(rq);
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goto unpin_hws;
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}
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err = move_to_active(vma, rq, 0);
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if (err)
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goto cancel_rq;
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err = move_to_active(hws, rq, 0);
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if (err)
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goto cancel_rq;
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batch = h->batch;
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if (GRAPHICS_VER(gt->i915) >= 8) {
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*batch++ = MI_STORE_DWORD_IMM_GEN4;
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*batch++ = lower_32_bits(hws_address(hws, rq));
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*batch++ = upper_32_bits(hws_address(hws, rq));
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*batch++ = rq->fence.seqno;
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*batch++ = MI_NOOP;
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memset(batch, 0, 1024);
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batch += 1024 / sizeof(*batch);
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*batch++ = MI_NOOP;
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*batch++ = MI_BATCH_BUFFER_START | 1 << 8 | 1;
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*batch++ = lower_32_bits(vma->node.start);
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*batch++ = upper_32_bits(vma->node.start);
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} else if (GRAPHICS_VER(gt->i915) >= 6) {
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*batch++ = MI_STORE_DWORD_IMM_GEN4;
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*batch++ = 0;
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*batch++ = lower_32_bits(hws_address(hws, rq));
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*batch++ = rq->fence.seqno;
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*batch++ = MI_NOOP;
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memset(batch, 0, 1024);
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batch += 1024 / sizeof(*batch);
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*batch++ = MI_NOOP;
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*batch++ = MI_BATCH_BUFFER_START | 1 << 8;
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*batch++ = lower_32_bits(vma->node.start);
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} else if (GRAPHICS_VER(gt->i915) >= 4) {
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*batch++ = MI_STORE_DWORD_IMM_GEN4 | MI_USE_GGTT;
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*batch++ = 0;
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*batch++ = lower_32_bits(hws_address(hws, rq));
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*batch++ = rq->fence.seqno;
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*batch++ = MI_NOOP;
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memset(batch, 0, 1024);
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batch += 1024 / sizeof(*batch);
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*batch++ = MI_NOOP;
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*batch++ = MI_BATCH_BUFFER_START | 2 << 6;
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*batch++ = lower_32_bits(vma->node.start);
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} else {
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*batch++ = MI_STORE_DWORD_IMM | MI_MEM_VIRTUAL;
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*batch++ = lower_32_bits(hws_address(hws, rq));
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*batch++ = rq->fence.seqno;
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*batch++ = MI_NOOP;
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memset(batch, 0, 1024);
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batch += 1024 / sizeof(*batch);
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*batch++ = MI_NOOP;
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*batch++ = MI_BATCH_BUFFER_START | 2 << 6;
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*batch++ = lower_32_bits(vma->node.start);
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}
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*batch++ = MI_BATCH_BUFFER_END; /* not reached */
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intel_gt_chipset_flush(engine->gt);
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if (rq->engine->emit_init_breadcrumb) {
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err = rq->engine->emit_init_breadcrumb(rq);
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if (err)
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goto cancel_rq;
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}
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flags = 0;
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if (GRAPHICS_VER(gt->i915) <= 5)
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flags |= I915_DISPATCH_SECURE;
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err = rq->engine->emit_bb_start(rq, vma->node.start, PAGE_SIZE, flags);
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cancel_rq:
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if (err) {
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i915_request_set_error_once(rq, err);
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i915_request_add(rq);
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}
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unpin_hws:
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i915_vma_unpin(hws);
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unpin_vma:
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i915_vma_unpin(vma);
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i915_vm_put(vm);
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return err ? ERR_PTR(err) : rq;
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}
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static u32 hws_seqno(const struct hang *h, const struct i915_request *rq)
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{
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return READ_ONCE(h->seqno[rq->fence.context % (PAGE_SIZE/sizeof(u32))]);
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}
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static void hang_fini(struct hang *h)
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{
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*h->batch = MI_BATCH_BUFFER_END;
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intel_gt_chipset_flush(h->gt);
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i915_gem_object_unpin_map(h->obj);
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i915_gem_object_put(h->obj);
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i915_gem_object_unpin_map(h->hws);
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i915_gem_object_put(h->hws);
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kernel_context_close(h->ctx);
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igt_flush_test(h->gt->i915);
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}
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static bool wait_until_running(struct hang *h, struct i915_request *rq)
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{
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return !(wait_for_us(i915_seqno_passed(hws_seqno(h, rq),
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rq->fence.seqno),
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10) &&
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wait_for(i915_seqno_passed(hws_seqno(h, rq),
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rq->fence.seqno),
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1000));
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}
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static int igt_hang_sanitycheck(void *arg)
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{
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struct intel_gt *gt = arg;
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struct i915_request *rq;
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struct intel_engine_cs *engine;
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enum intel_engine_id id;
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struct hang h;
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int err;
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/* Basic check that we can execute our hanging batch */
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err = hang_init(&h, gt);
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if (err)
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return err;
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for_each_engine(engine, gt, id) {
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struct intel_wedge_me w;
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long timeout;
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if (!intel_engine_can_store_dword(engine))
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continue;
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rq = hang_create_request(&h, engine);
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if (IS_ERR(rq)) {
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err = PTR_ERR(rq);
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pr_err("Failed to create request for %s, err=%d\n",
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engine->name, err);
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goto fini;
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}
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i915_request_get(rq);
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*h.batch = MI_BATCH_BUFFER_END;
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intel_gt_chipset_flush(engine->gt);
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i915_request_add(rq);
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timeout = 0;
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intel_wedge_on_timeout(&w, gt, HZ / 10 /* 100ms */)
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timeout = i915_request_wait(rq, 0,
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MAX_SCHEDULE_TIMEOUT);
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if (intel_gt_is_wedged(gt))
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timeout = -EIO;
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i915_request_put(rq);
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if (timeout < 0) {
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err = timeout;
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pr_err("Wait for request failed on %s, err=%d\n",
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engine->name, err);
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goto fini;
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}
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}
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fini:
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hang_fini(&h);
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return err;
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}
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static bool wait_for_idle(struct intel_engine_cs *engine)
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{
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return wait_for(intel_engine_is_idle(engine), IGT_IDLE_TIMEOUT) == 0;
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}
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static int igt_reset_nop(void *arg)
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{
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struct intel_gt *gt = arg;
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struct i915_gpu_error *global = >->i915->gpu_error;
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struct intel_engine_cs *engine;
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unsigned int reset_count, count;
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enum intel_engine_id id;
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IGT_TIMEOUT(end_time);
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int err = 0;
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/* Check that we can reset during non-user portions of requests */
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reset_count = i915_reset_count(global);
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count = 0;
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do {
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for_each_engine(engine, gt, id) {
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struct intel_context *ce;
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int i;
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ce = intel_context_create(engine);
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if (IS_ERR(ce)) {
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err = PTR_ERR(ce);
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pr_err("[%s] Create context failed: %d!\n", engine->name, err);
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break;
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}
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for (i = 0; i < 16; i++) {
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struct i915_request *rq;
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rq = intel_context_create_request(ce);
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if (IS_ERR(rq)) {
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err = PTR_ERR(rq);
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pr_err("[%s] Create request failed: %d!\n",
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engine->name, err);
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break;
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}
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i915_request_add(rq);
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}
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intel_context_put(ce);
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}
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igt_global_reset_lock(gt);
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intel_gt_reset(gt, ALL_ENGINES, NULL);
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igt_global_reset_unlock(gt);
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if (intel_gt_is_wedged(gt)) {
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pr_err("[%s] GT is wedged!\n", engine->name);
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err = -EIO;
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break;
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}
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if (i915_reset_count(global) != reset_count + ++count) {
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pr_err("[%s] Reset not recorded: %d vs %d + %d!\n",
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engine->name, i915_reset_count(global), reset_count, count);
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err = -EINVAL;
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break;
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}
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err = igt_flush_test(gt->i915);
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if (err) {
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pr_err("[%s] Flush failed: %d!\n", engine->name, err);
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break;
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}
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} while (time_before(jiffies, end_time));
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pr_info("%s: %d resets\n", __func__, count);
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if (igt_flush_test(gt->i915)) {
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pr_err("Post flush failed: %d!\n", err);
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err = -EIO;
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}
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return err;
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}
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static int igt_reset_nop_engine(void *arg)
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{
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struct intel_gt *gt = arg;
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struct i915_gpu_error *global = >->i915->gpu_error;
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struct intel_engine_cs *engine;
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enum intel_engine_id id;
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/* Check that we can engine-reset during non-user portions */
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if (!intel_has_reset_engine(gt))
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return 0;
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for_each_engine(engine, gt, id) {
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unsigned int reset_count, reset_engine_count, count;
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struct intel_context *ce;
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IGT_TIMEOUT(end_time);
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int err;
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if (intel_engine_uses_guc(engine)) {
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/* Engine level resets are triggered by GuC when a hang
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* is detected. They can't be triggered by the KMD any
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* more. Thus a nop batch cannot be used as a reset test
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*/
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continue;
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}
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ce = intel_context_create(engine);
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if (IS_ERR(ce)) {
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pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
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return PTR_ERR(ce);
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}
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|
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reset_count = i915_reset_count(global);
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reset_engine_count = i915_reset_engine_count(global, engine);
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count = 0;
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st_engine_heartbeat_disable(engine);
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GEM_BUG_ON(test_and_set_bit(I915_RESET_ENGINE + id,
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>->reset.flags));
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do {
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int i;
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|
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if (!wait_for_idle(engine)) {
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pr_err("%s failed to idle before reset\n",
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engine->name);
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err = -EIO;
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break;
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}
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|
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for (i = 0; i < 16; i++) {
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struct i915_request *rq;
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rq = intel_context_create_request(ce);
|
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if (IS_ERR(rq)) {
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struct drm_printer p =
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drm_info_printer(gt->i915->drm.dev);
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intel_engine_dump(engine, &p,
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"%s(%s): failed to submit request\n",
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__func__,
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engine->name);
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|
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GEM_TRACE("%s(%s): failed to submit request\n",
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__func__,
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engine->name);
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GEM_TRACE_DUMP();
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|
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intel_gt_set_wedged(gt);
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err = PTR_ERR(rq);
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break;
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}
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|
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i915_request_add(rq);
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}
|
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err = intel_engine_reset(engine, NULL);
|
|
if (err) {
|
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pr_err("intel_engine_reset(%s) failed, err:%d\n",
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engine->name, err);
|
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break;
|
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}
|
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|
|
if (i915_reset_count(global) != reset_count) {
|
|
pr_err("Full GPU reset recorded! (engine reset expected)\n");
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (i915_reset_engine_count(global, engine) !=
|
|
reset_engine_count + ++count) {
|
|
pr_err("%s engine reset not recorded!\n",
|
|
engine->name);
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
} while (time_before(jiffies, end_time));
|
|
clear_and_wake_up_bit(I915_RESET_ENGINE + id, >->reset.flags);
|
|
st_engine_heartbeat_enable(engine);
|
|
|
|
pr_info("%s(%s): %d resets\n", __func__, engine->name, count);
|
|
|
|
intel_context_put(ce);
|
|
if (igt_flush_test(gt->i915))
|
|
err = -EIO;
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void force_reset_timeout(struct intel_engine_cs *engine)
|
|
{
|
|
engine->reset_timeout.probability = 999;
|
|
atomic_set(&engine->reset_timeout.times, -1);
|
|
}
|
|
|
|
static void cancel_reset_timeout(struct intel_engine_cs *engine)
|
|
{
|
|
memset(&engine->reset_timeout, 0, sizeof(engine->reset_timeout));
|
|
}
|
|
|
|
static int igt_reset_fail_engine(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
struct intel_engine_cs *engine;
|
|
enum intel_engine_id id;
|
|
|
|
/* Check that we can recover from engine-reset failues */
|
|
|
|
if (!intel_has_reset_engine(gt))
|
|
return 0;
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
unsigned int count;
|
|
struct intel_context *ce;
|
|
IGT_TIMEOUT(end_time);
|
|
int err;
|
|
|
|
/* Can't manually break the reset if i915 doesn't perform it */
|
|
if (intel_engine_uses_guc(engine))
|
|
continue;
|
|
|
|
ce = intel_context_create(engine);
|
|
if (IS_ERR(ce)) {
|
|
pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
|
|
return PTR_ERR(ce);
|
|
}
|
|
|
|
st_engine_heartbeat_disable(engine);
|
|
GEM_BUG_ON(test_and_set_bit(I915_RESET_ENGINE + id,
|
|
>->reset.flags));
|
|
|
|
force_reset_timeout(engine);
|
|
err = intel_engine_reset(engine, NULL);
|
|
cancel_reset_timeout(engine);
|
|
if (err == 0) /* timeouts only generated on gen8+ */
|
|
goto skip;
|
|
|
|
count = 0;
|
|
do {
|
|
struct i915_request *last = NULL;
|
|
int i;
|
|
|
|
if (!wait_for_idle(engine)) {
|
|
pr_err("%s failed to idle before reset\n",
|
|
engine->name);
|
|
err = -EIO;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < count % 15; i++) {
|
|
struct i915_request *rq;
|
|
|
|
rq = intel_context_create_request(ce);
|
|
if (IS_ERR(rq)) {
|
|
struct drm_printer p =
|
|
drm_info_printer(gt->i915->drm.dev);
|
|
intel_engine_dump(engine, &p,
|
|
"%s(%s): failed to submit request\n",
|
|
__func__,
|
|
engine->name);
|
|
|
|
GEM_TRACE("%s(%s): failed to submit request\n",
|
|
__func__,
|
|
engine->name);
|
|
GEM_TRACE_DUMP();
|
|
|
|
intel_gt_set_wedged(gt);
|
|
if (last)
|
|
i915_request_put(last);
|
|
|
|
err = PTR_ERR(rq);
|
|
goto out;
|
|
}
|
|
|
|
if (last)
|
|
i915_request_put(last);
|
|
last = i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
}
|
|
|
|
if (count & 1) {
|
|
err = intel_engine_reset(engine, NULL);
|
|
if (err) {
|
|
GEM_TRACE_ERR("intel_engine_reset(%s) failed, err:%d\n",
|
|
engine->name, err);
|
|
GEM_TRACE_DUMP();
|
|
i915_request_put(last);
|
|
break;
|
|
}
|
|
} else {
|
|
force_reset_timeout(engine);
|
|
err = intel_engine_reset(engine, NULL);
|
|
cancel_reset_timeout(engine);
|
|
if (err != -ETIMEDOUT) {
|
|
pr_err("intel_engine_reset(%s) did not fail, err:%d\n",
|
|
engine->name, err);
|
|
i915_request_put(last);
|
|
break;
|
|
}
|
|
}
|
|
|
|
err = 0;
|
|
if (last) {
|
|
if (i915_request_wait(last, 0, HZ / 2) < 0) {
|
|
struct drm_printer p =
|
|
drm_info_printer(gt->i915->drm.dev);
|
|
|
|
intel_engine_dump(engine, &p,
|
|
"%s(%s): failed to complete request\n",
|
|
__func__,
|
|
engine->name);
|
|
|
|
GEM_TRACE("%s(%s): failed to complete request\n",
|
|
__func__,
|
|
engine->name);
|
|
GEM_TRACE_DUMP();
|
|
|
|
err = -EIO;
|
|
}
|
|
i915_request_put(last);
|
|
}
|
|
count++;
|
|
} while (err == 0 && time_before(jiffies, end_time));
|
|
out:
|
|
pr_info("%s(%s): %d resets\n", __func__, engine->name, count);
|
|
skip:
|
|
clear_and_wake_up_bit(I915_RESET_ENGINE + id, >->reset.flags);
|
|
st_engine_heartbeat_enable(engine);
|
|
intel_context_put(ce);
|
|
|
|
if (igt_flush_test(gt->i915))
|
|
err = -EIO;
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __igt_reset_engine(struct intel_gt *gt, bool active)
|
|
{
|
|
struct i915_gpu_error *global = >->i915->gpu_error;
|
|
struct intel_engine_cs *engine;
|
|
enum intel_engine_id id;
|
|
struct hang h;
|
|
int err = 0;
|
|
|
|
/* Check that we can issue an engine reset on an idle engine (no-op) */
|
|
|
|
if (!intel_has_reset_engine(gt))
|
|
return 0;
|
|
|
|
if (active) {
|
|
err = hang_init(&h, gt);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
unsigned int reset_count, reset_engine_count;
|
|
unsigned long count;
|
|
bool using_guc = intel_engine_uses_guc(engine);
|
|
IGT_TIMEOUT(end_time);
|
|
|
|
if (using_guc && !active)
|
|
continue;
|
|
|
|
if (active && !intel_engine_can_store_dword(engine))
|
|
continue;
|
|
|
|
if (!wait_for_idle(engine)) {
|
|
pr_err("%s failed to idle before reset\n",
|
|
engine->name);
|
|
err = -EIO;
|
|
break;
|
|
}
|
|
|
|
reset_count = i915_reset_count(global);
|
|
reset_engine_count = i915_reset_engine_count(global, engine);
|
|
|
|
st_engine_heartbeat_disable(engine);
|
|
GEM_BUG_ON(test_and_set_bit(I915_RESET_ENGINE + id,
|
|
>->reset.flags));
|
|
count = 0;
|
|
do {
|
|
struct i915_request *rq = NULL;
|
|
struct intel_selftest_saved_policy saved;
|
|
int err2;
|
|
|
|
err = intel_selftest_modify_policy(engine, &saved,
|
|
SELFTEST_SCHEDULER_MODIFY_FAST_RESET);
|
|
if (err) {
|
|
pr_err("[%s] Modify policy failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
|
|
if (active) {
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n",
|
|
engine->name, err);
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
if (!wait_until_running(&h, rq)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s: Failed to start request %llx, at %x\n",
|
|
__func__, rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_engine_dump(engine, &p,
|
|
"%s\n", engine->name);
|
|
|
|
i915_request_put(rq);
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
}
|
|
|
|
if (!using_guc) {
|
|
err = intel_engine_reset(engine, NULL);
|
|
if (err) {
|
|
pr_err("intel_engine_reset(%s) failed, err:%d\n",
|
|
engine->name, err);
|
|
goto skip;
|
|
}
|
|
}
|
|
|
|
if (rq) {
|
|
/* Ensure the reset happens and kills the engine */
|
|
err = intel_selftest_wait_for_rq(rq);
|
|
if (err)
|
|
pr_err("[%s] Wait for request %lld:%lld [0x%04X] failed: %d!\n",
|
|
engine->name, rq->fence.context,
|
|
rq->fence.seqno, rq->context->guc_id.id, err);
|
|
}
|
|
|
|
skip:
|
|
if (rq)
|
|
i915_request_put(rq);
|
|
|
|
if (i915_reset_count(global) != reset_count) {
|
|
pr_err("Full GPU reset recorded! (engine reset expected)\n");
|
|
err = -EINVAL;
|
|
goto restore;
|
|
}
|
|
|
|
/* GuC based resets are not logged per engine */
|
|
if (!using_guc) {
|
|
if (i915_reset_engine_count(global, engine) !=
|
|
++reset_engine_count) {
|
|
pr_err("%s engine reset not recorded!\n",
|
|
engine->name);
|
|
err = -EINVAL;
|
|
goto restore;
|
|
}
|
|
}
|
|
|
|
count++;
|
|
|
|
restore:
|
|
err2 = intel_selftest_restore_policy(engine, &saved);
|
|
if (err2)
|
|
pr_err("[%s] Restore policy failed: %d!\n", engine->name, err);
|
|
if (err == 0)
|
|
err = err2;
|
|
if (err)
|
|
break;
|
|
} while (time_before(jiffies, end_time));
|
|
clear_and_wake_up_bit(I915_RESET_ENGINE + id, >->reset.flags);
|
|
st_engine_heartbeat_enable(engine);
|
|
pr_info("%s: Completed %lu %s resets\n",
|
|
engine->name, count, active ? "active" : "idle");
|
|
|
|
if (err)
|
|
break;
|
|
|
|
err = igt_flush_test(gt->i915);
|
|
if (err) {
|
|
pr_err("[%s] Flush failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (intel_gt_is_wedged(gt)) {
|
|
pr_err("GT is wedged!\n");
|
|
err = -EIO;
|
|
}
|
|
|
|
if (active)
|
|
hang_fini(&h);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_reset_idle_engine(void *arg)
|
|
{
|
|
return __igt_reset_engine(arg, false);
|
|
}
|
|
|
|
static int igt_reset_active_engine(void *arg)
|
|
{
|
|
return __igt_reset_engine(arg, true);
|
|
}
|
|
|
|
struct active_engine {
|
|
struct kthread_worker *worker;
|
|
struct kthread_work work;
|
|
struct intel_engine_cs *engine;
|
|
unsigned long resets;
|
|
unsigned int flags;
|
|
bool stop;
|
|
int result;
|
|
};
|
|
|
|
#define TEST_ACTIVE BIT(0)
|
|
#define TEST_OTHERS BIT(1)
|
|
#define TEST_SELF BIT(2)
|
|
#define TEST_PRIORITY BIT(3)
|
|
|
|
static int active_request_put(struct i915_request *rq)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!rq)
|
|
return 0;
|
|
|
|
if (i915_request_wait(rq, 0, 10 * HZ) < 0) {
|
|
GEM_TRACE("%s timed out waiting for completion of fence %llx:%lld\n",
|
|
rq->engine->name,
|
|
rq->fence.context,
|
|
rq->fence.seqno);
|
|
GEM_TRACE_DUMP();
|
|
|
|
intel_gt_set_wedged(rq->engine->gt);
|
|
err = -EIO;
|
|
}
|
|
|
|
i915_request_put(rq);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void active_engine(struct kthread_work *work)
|
|
{
|
|
I915_RND_STATE(prng);
|
|
struct active_engine *arg = container_of(work, typeof(*arg), work);
|
|
struct intel_engine_cs *engine = arg->engine;
|
|
struct i915_request *rq[8] = {};
|
|
struct intel_context *ce[ARRAY_SIZE(rq)];
|
|
unsigned long count;
|
|
int err = 0;
|
|
|
|
for (count = 0; count < ARRAY_SIZE(ce); count++) {
|
|
ce[count] = intel_context_create(engine);
|
|
if (IS_ERR(ce[count])) {
|
|
arg->result = PTR_ERR(ce[count]);
|
|
pr_err("[%s] Create context #%ld failed: %d!\n",
|
|
engine->name, count, arg->result);
|
|
while (--count)
|
|
intel_context_put(ce[count]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
count = 0;
|
|
while (!READ_ONCE(arg->stop)) {
|
|
unsigned int idx = count++ & (ARRAY_SIZE(rq) - 1);
|
|
struct i915_request *old = rq[idx];
|
|
struct i915_request *new;
|
|
|
|
new = intel_context_create_request(ce[idx]);
|
|
if (IS_ERR(new)) {
|
|
err = PTR_ERR(new);
|
|
pr_err("[%s] Create request #%d failed: %d!\n", engine->name, idx, err);
|
|
break;
|
|
}
|
|
|
|
rq[idx] = i915_request_get(new);
|
|
i915_request_add(new);
|
|
|
|
if (engine->sched_engine->schedule && arg->flags & TEST_PRIORITY) {
|
|
struct i915_sched_attr attr = {
|
|
.priority =
|
|
i915_prandom_u32_max_state(512, &prng),
|
|
};
|
|
engine->sched_engine->schedule(rq[idx], &attr);
|
|
}
|
|
|
|
err = active_request_put(old);
|
|
if (err) {
|
|
pr_err("[%s] Request put failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
|
|
cond_resched();
|
|
}
|
|
|
|
for (count = 0; count < ARRAY_SIZE(rq); count++) {
|
|
int err__ = active_request_put(rq[count]);
|
|
|
|
if (err)
|
|
pr_err("[%s] Request put #%ld failed: %d!\n", engine->name, count, err);
|
|
|
|
/* Keep the first error */
|
|
if (!err)
|
|
err = err__;
|
|
|
|
intel_context_put(ce[count]);
|
|
}
|
|
|
|
arg->result = err;
|
|
}
|
|
|
|
static int __igt_reset_engines(struct intel_gt *gt,
|
|
const char *test_name,
|
|
unsigned int flags)
|
|
{
|
|
struct i915_gpu_error *global = >->i915->gpu_error;
|
|
struct intel_engine_cs *engine, *other;
|
|
struct active_engine *threads;
|
|
enum intel_engine_id id, tmp;
|
|
struct hang h;
|
|
int err = 0;
|
|
|
|
/* Check that issuing a reset on one engine does not interfere
|
|
* with any other engine.
|
|
*/
|
|
|
|
if (!intel_has_reset_engine(gt))
|
|
return 0;
|
|
|
|
if (flags & TEST_ACTIVE) {
|
|
err = hang_init(&h, gt);
|
|
if (err)
|
|
return err;
|
|
|
|
if (flags & TEST_PRIORITY)
|
|
h.ctx->sched.priority = 1024;
|
|
}
|
|
|
|
threads = kmalloc_array(I915_NUM_ENGINES, sizeof(*threads), GFP_KERNEL);
|
|
if (!threads)
|
|
return -ENOMEM;
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
unsigned long device = i915_reset_count(global);
|
|
unsigned long count = 0, reported;
|
|
bool using_guc = intel_engine_uses_guc(engine);
|
|
IGT_TIMEOUT(end_time);
|
|
|
|
if (flags & TEST_ACTIVE) {
|
|
if (!intel_engine_can_store_dword(engine))
|
|
continue;
|
|
} else if (using_guc)
|
|
continue;
|
|
|
|
if (!wait_for_idle(engine)) {
|
|
pr_err("i915_reset_engine(%s:%s): failed to idle before reset\n",
|
|
engine->name, test_name);
|
|
err = -EIO;
|
|
break;
|
|
}
|
|
|
|
memset(threads, 0, sizeof(*threads) * I915_NUM_ENGINES);
|
|
for_each_engine(other, gt, tmp) {
|
|
struct kthread_worker *worker;
|
|
|
|
threads[tmp].resets =
|
|
i915_reset_engine_count(global, other);
|
|
|
|
if (other == engine && !(flags & TEST_SELF))
|
|
continue;
|
|
|
|
if (other != engine && !(flags & TEST_OTHERS))
|
|
continue;
|
|
|
|
threads[tmp].engine = other;
|
|
threads[tmp].flags = flags;
|
|
|
|
worker = kthread_create_worker(0, "igt/%s",
|
|
other->name);
|
|
if (IS_ERR(worker)) {
|
|
err = PTR_ERR(worker);
|
|
pr_err("[%s] Worker create failed: %d!\n",
|
|
engine->name, err);
|
|
goto unwind;
|
|
}
|
|
|
|
threads[tmp].worker = worker;
|
|
|
|
kthread_init_work(&threads[tmp].work, active_engine);
|
|
kthread_queue_work(threads[tmp].worker,
|
|
&threads[tmp].work);
|
|
}
|
|
|
|
st_engine_heartbeat_disable_no_pm(engine);
|
|
GEM_BUG_ON(test_and_set_bit(I915_RESET_ENGINE + id,
|
|
>->reset.flags));
|
|
do {
|
|
struct i915_request *rq = NULL;
|
|
struct intel_selftest_saved_policy saved;
|
|
int err2;
|
|
|
|
err = intel_selftest_modify_policy(engine, &saved,
|
|
SELFTEST_SCHEDULER_MODIFY_FAST_RESET);
|
|
if (err) {
|
|
pr_err("[%s] Modify policy failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
|
|
if (flags & TEST_ACTIVE) {
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n",
|
|
engine->name, err);
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
if (!wait_until_running(&h, rq)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s: Failed to start request %llx, at %x\n",
|
|
__func__, rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_engine_dump(engine, &p,
|
|
"%s\n", engine->name);
|
|
|
|
i915_request_put(rq);
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
} else {
|
|
intel_engine_pm_get(engine);
|
|
}
|
|
|
|
if (!using_guc) {
|
|
err = intel_engine_reset(engine, NULL);
|
|
if (err) {
|
|
pr_err("i915_reset_engine(%s:%s): failed, err=%d\n",
|
|
engine->name, test_name, err);
|
|
goto restore;
|
|
}
|
|
}
|
|
|
|
if (rq) {
|
|
/* Ensure the reset happens and kills the engine */
|
|
err = intel_selftest_wait_for_rq(rq);
|
|
if (err)
|
|
pr_err("[%s] Wait for request %lld:%lld [0x%04X] failed: %d!\n",
|
|
engine->name, rq->fence.context,
|
|
rq->fence.seqno, rq->context->guc_id.id, err);
|
|
}
|
|
|
|
count++;
|
|
|
|
if (rq) {
|
|
if (rq->fence.error != -EIO) {
|
|
pr_err("i915_reset_engine(%s:%s): failed to reset request %lld:%lld [0x%04X]\n",
|
|
engine->name, test_name,
|
|
rq->fence.context,
|
|
rq->fence.seqno, rq->context->guc_id.id);
|
|
i915_request_put(rq);
|
|
|
|
GEM_TRACE_DUMP();
|
|
intel_gt_set_wedged(gt);
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
|
|
if (i915_request_wait(rq, 0, HZ / 5) < 0) {
|
|
struct drm_printer p =
|
|
drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("i915_reset_engine(%s:%s):"
|
|
" failed to complete request %llx:%lld after reset\n",
|
|
engine->name, test_name,
|
|
rq->fence.context,
|
|
rq->fence.seqno);
|
|
intel_engine_dump(engine, &p,
|
|
"%s\n", engine->name);
|
|
i915_request_put(rq);
|
|
|
|
GEM_TRACE_DUMP();
|
|
intel_gt_set_wedged(gt);
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_put(rq);
|
|
}
|
|
|
|
if (!(flags & TEST_ACTIVE))
|
|
intel_engine_pm_put(engine);
|
|
|
|
if (!(flags & TEST_SELF) && !wait_for_idle(engine)) {
|
|
struct drm_printer p =
|
|
drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("i915_reset_engine(%s:%s):"
|
|
" failed to idle after reset\n",
|
|
engine->name, test_name);
|
|
intel_engine_dump(engine, &p,
|
|
"%s\n", engine->name);
|
|
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
|
|
restore:
|
|
err2 = intel_selftest_restore_policy(engine, &saved);
|
|
if (err2)
|
|
pr_err("[%s] Restore policy failed: %d!\n", engine->name, err2);
|
|
if (err == 0)
|
|
err = err2;
|
|
if (err)
|
|
break;
|
|
} while (time_before(jiffies, end_time));
|
|
clear_and_wake_up_bit(I915_RESET_ENGINE + id, >->reset.flags);
|
|
st_engine_heartbeat_enable_no_pm(engine);
|
|
|
|
pr_info("i915_reset_engine(%s:%s): %lu resets\n",
|
|
engine->name, test_name, count);
|
|
|
|
/* GuC based resets are not logged per engine */
|
|
if (!using_guc) {
|
|
reported = i915_reset_engine_count(global, engine);
|
|
reported -= threads[engine->id].resets;
|
|
if (reported != count) {
|
|
pr_err("i915_reset_engine(%s:%s): reset %lu times, but reported %lu\n",
|
|
engine->name, test_name, count, reported);
|
|
if (!err)
|
|
err = -EINVAL;
|
|
}
|
|
}
|
|
|
|
unwind:
|
|
for_each_engine(other, gt, tmp) {
|
|
int ret;
|
|
|
|
if (!threads[tmp].worker)
|
|
continue;
|
|
|
|
WRITE_ONCE(threads[tmp].stop, true);
|
|
kthread_flush_work(&threads[tmp].work);
|
|
ret = READ_ONCE(threads[tmp].result);
|
|
if (ret) {
|
|
pr_err("kthread for other engine %s failed, err=%d\n",
|
|
other->name, ret);
|
|
if (!err)
|
|
err = ret;
|
|
}
|
|
|
|
kthread_destroy_worker(threads[tmp].worker);
|
|
|
|
/* GuC based resets are not logged per engine */
|
|
if (!using_guc) {
|
|
if (other->uabi_class != engine->uabi_class &&
|
|
threads[tmp].resets !=
|
|
i915_reset_engine_count(global, other)) {
|
|
pr_err("Innocent engine %s was reset (count=%ld)\n",
|
|
other->name,
|
|
i915_reset_engine_count(global, other) -
|
|
threads[tmp].resets);
|
|
if (!err)
|
|
err = -EINVAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (device != i915_reset_count(global)) {
|
|
pr_err("Global reset (count=%ld)!\n",
|
|
i915_reset_count(global) - device);
|
|
if (!err)
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (err)
|
|
break;
|
|
|
|
err = igt_flush_test(gt->i915);
|
|
if (err) {
|
|
pr_err("[%s] Flush failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
}
|
|
kfree(threads);
|
|
|
|
if (intel_gt_is_wedged(gt))
|
|
err = -EIO;
|
|
|
|
if (flags & TEST_ACTIVE)
|
|
hang_fini(&h);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_reset_engines(void *arg)
|
|
{
|
|
static const struct {
|
|
const char *name;
|
|
unsigned int flags;
|
|
} phases[] = {
|
|
{ "idle", 0 },
|
|
{ "active", TEST_ACTIVE },
|
|
{ "others-idle", TEST_OTHERS },
|
|
{ "others-active", TEST_OTHERS | TEST_ACTIVE },
|
|
{
|
|
"others-priority",
|
|
TEST_OTHERS | TEST_ACTIVE | TEST_PRIORITY
|
|
},
|
|
{
|
|
"self-priority",
|
|
TEST_ACTIVE | TEST_PRIORITY | TEST_SELF,
|
|
},
|
|
{ }
|
|
};
|
|
struct intel_gt *gt = arg;
|
|
typeof(*phases) *p;
|
|
int err;
|
|
|
|
for (p = phases; p->name; p++) {
|
|
if (p->flags & TEST_PRIORITY) {
|
|
if (!(gt->i915->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY))
|
|
continue;
|
|
}
|
|
|
|
err = __igt_reset_engines(arg, p->name, p->flags);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 fake_hangcheck(struct intel_gt *gt, intel_engine_mask_t mask)
|
|
{
|
|
u32 count = i915_reset_count(>->i915->gpu_error);
|
|
|
|
intel_gt_reset(gt, mask, NULL);
|
|
|
|
return count;
|
|
}
|
|
|
|
static int igt_reset_wait(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
struct i915_gpu_error *global = >->i915->gpu_error;
|
|
struct intel_engine_cs *engine;
|
|
struct i915_request *rq;
|
|
unsigned int reset_count;
|
|
struct hang h;
|
|
long timeout;
|
|
int err;
|
|
|
|
engine = intel_selftest_find_any_engine(gt);
|
|
|
|
if (!engine || !intel_engine_can_store_dword(engine))
|
|
return 0;
|
|
|
|
/* Check that we detect a stuck waiter and issue a reset */
|
|
|
|
igt_global_reset_lock(gt);
|
|
|
|
err = hang_init(&h, gt);
|
|
if (err) {
|
|
pr_err("[%s] Hang init failed: %d!\n", engine->name, err);
|
|
goto unlock;
|
|
}
|
|
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n", engine->name, err);
|
|
goto fini;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
if (!wait_until_running(&h, rq)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s: Failed to start request %llx, at %x\n",
|
|
__func__, rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_engine_dump(rq->engine, &p, "%s\n", rq->engine->name);
|
|
|
|
intel_gt_set_wedged(gt);
|
|
|
|
err = -EIO;
|
|
goto out_rq;
|
|
}
|
|
|
|
reset_count = fake_hangcheck(gt, ALL_ENGINES);
|
|
|
|
timeout = i915_request_wait(rq, 0, 10);
|
|
if (timeout < 0) {
|
|
pr_err("i915_request_wait failed on a stuck request: err=%ld\n",
|
|
timeout);
|
|
err = timeout;
|
|
goto out_rq;
|
|
}
|
|
|
|
if (i915_reset_count(global) == reset_count) {
|
|
pr_err("No GPU reset recorded!\n");
|
|
err = -EINVAL;
|
|
goto out_rq;
|
|
}
|
|
|
|
out_rq:
|
|
i915_request_put(rq);
|
|
fini:
|
|
hang_fini(&h);
|
|
unlock:
|
|
igt_global_reset_unlock(gt);
|
|
|
|
if (intel_gt_is_wedged(gt))
|
|
return -EIO;
|
|
|
|
return err;
|
|
}
|
|
|
|
struct evict_vma {
|
|
struct completion completion;
|
|
struct i915_vma *vma;
|
|
};
|
|
|
|
static int evict_vma(void *data)
|
|
{
|
|
struct evict_vma *arg = data;
|
|
struct i915_address_space *vm = arg->vma->vm;
|
|
struct drm_mm_node evict = arg->vma->node;
|
|
int err;
|
|
|
|
complete(&arg->completion);
|
|
|
|
mutex_lock(&vm->mutex);
|
|
err = i915_gem_evict_for_node(vm, NULL, &evict, 0);
|
|
mutex_unlock(&vm->mutex);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int evict_fence(void *data)
|
|
{
|
|
struct evict_vma *arg = data;
|
|
int err;
|
|
|
|
complete(&arg->completion);
|
|
|
|
/* Mark the fence register as dirty to force the mmio update. */
|
|
err = i915_gem_object_set_tiling(arg->vma->obj, I915_TILING_Y, 512);
|
|
if (err) {
|
|
pr_err("Invalid Y-tiling settings; err:%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = i915_vma_pin(arg->vma, 0, 0, PIN_GLOBAL | PIN_MAPPABLE);
|
|
if (err) {
|
|
pr_err("Unable to pin vma for Y-tiled fence; err:%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = i915_vma_pin_fence(arg->vma);
|
|
i915_vma_unpin(arg->vma);
|
|
if (err) {
|
|
pr_err("Unable to pin Y-tiled fence; err:%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
i915_vma_unpin_fence(arg->vma);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __igt_reset_evict_vma(struct intel_gt *gt,
|
|
struct i915_address_space *vm,
|
|
int (*fn)(void *),
|
|
unsigned int flags)
|
|
{
|
|
struct intel_engine_cs *engine;
|
|
struct drm_i915_gem_object *obj;
|
|
struct task_struct *tsk = NULL;
|
|
struct i915_request *rq;
|
|
struct evict_vma arg;
|
|
struct hang h;
|
|
unsigned int pin_flags;
|
|
int err;
|
|
|
|
if (!gt->ggtt->num_fences && flags & EXEC_OBJECT_NEEDS_FENCE)
|
|
return 0;
|
|
|
|
engine = intel_selftest_find_any_engine(gt);
|
|
|
|
if (!engine || !intel_engine_can_store_dword(engine))
|
|
return 0;
|
|
|
|
/* Check that we can recover an unbind stuck on a hanging request */
|
|
|
|
err = hang_init(&h, gt);
|
|
if (err) {
|
|
pr_err("[%s] Hang init failed: %d!\n", engine->name, err);
|
|
return err;
|
|
}
|
|
|
|
obj = i915_gem_object_create_internal(gt->i915, SZ_1M);
|
|
if (IS_ERR(obj)) {
|
|
err = PTR_ERR(obj);
|
|
pr_err("[%s] Create object failed: %d!\n", engine->name, err);
|
|
goto fini;
|
|
}
|
|
|
|
if (flags & EXEC_OBJECT_NEEDS_FENCE) {
|
|
err = i915_gem_object_set_tiling(obj, I915_TILING_X, 512);
|
|
if (err) {
|
|
pr_err("Invalid X-tiling settings; err:%d\n", err);
|
|
goto out_obj;
|
|
}
|
|
}
|
|
|
|
arg.vma = i915_vma_instance(obj, vm, NULL);
|
|
if (IS_ERR(arg.vma)) {
|
|
err = PTR_ERR(arg.vma);
|
|
pr_err("[%s] VMA instance failed: %d!\n", engine->name, err);
|
|
goto out_obj;
|
|
}
|
|
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n", engine->name, err);
|
|
goto out_obj;
|
|
}
|
|
|
|
pin_flags = i915_vma_is_ggtt(arg.vma) ? PIN_GLOBAL : PIN_USER;
|
|
|
|
if (flags & EXEC_OBJECT_NEEDS_FENCE)
|
|
pin_flags |= PIN_MAPPABLE;
|
|
|
|
err = i915_vma_pin(arg.vma, 0, 0, pin_flags);
|
|
if (err) {
|
|
i915_request_add(rq);
|
|
pr_err("[%s] VMA pin failed: %d!\n", engine->name, err);
|
|
goto out_obj;
|
|
}
|
|
|
|
if (flags & EXEC_OBJECT_NEEDS_FENCE) {
|
|
err = i915_vma_pin_fence(arg.vma);
|
|
if (err) {
|
|
pr_err("Unable to pin X-tiled fence; err:%d\n", err);
|
|
i915_vma_unpin(arg.vma);
|
|
i915_request_add(rq);
|
|
goto out_obj;
|
|
}
|
|
}
|
|
|
|
i915_vma_lock(arg.vma);
|
|
err = i915_request_await_object(rq, arg.vma->obj,
|
|
flags & EXEC_OBJECT_WRITE);
|
|
if (err == 0) {
|
|
err = i915_vma_move_to_active(arg.vma, rq, flags);
|
|
if (err)
|
|
pr_err("[%s] Move to active failed: %d!\n", engine->name, err);
|
|
} else {
|
|
pr_err("[%s] Request await failed: %d!\n", engine->name, err);
|
|
}
|
|
|
|
i915_vma_unlock(arg.vma);
|
|
|
|
if (flags & EXEC_OBJECT_NEEDS_FENCE)
|
|
i915_vma_unpin_fence(arg.vma);
|
|
i915_vma_unpin(arg.vma);
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
if (err)
|
|
goto out_rq;
|
|
|
|
if (!wait_until_running(&h, rq)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s: Failed to start request %llx, at %x\n",
|
|
__func__, rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_engine_dump(rq->engine, &p, "%s\n", rq->engine->name);
|
|
|
|
intel_gt_set_wedged(gt);
|
|
goto out_reset;
|
|
}
|
|
|
|
init_completion(&arg.completion);
|
|
|
|
tsk = kthread_run(fn, &arg, "igt/evict_vma");
|
|
if (IS_ERR(tsk)) {
|
|
err = PTR_ERR(tsk);
|
|
pr_err("[%s] Thread spawn failed: %d!\n", engine->name, err);
|
|
tsk = NULL;
|
|
goto out_reset;
|
|
}
|
|
get_task_struct(tsk);
|
|
|
|
wait_for_completion(&arg.completion);
|
|
|
|
if (wait_for(!list_empty(&rq->fence.cb_list), 10)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("igt/evict_vma kthread did not wait\n");
|
|
intel_engine_dump(rq->engine, &p, "%s\n", rq->engine->name);
|
|
|
|
intel_gt_set_wedged(gt);
|
|
goto out_reset;
|
|
}
|
|
|
|
out_reset:
|
|
igt_global_reset_lock(gt);
|
|
fake_hangcheck(gt, rq->engine->mask);
|
|
igt_global_reset_unlock(gt);
|
|
|
|
if (tsk) {
|
|
struct intel_wedge_me w;
|
|
|
|
/* The reset, even indirectly, should take less than 10ms. */
|
|
intel_wedge_on_timeout(&w, gt, HZ / 10 /* 100ms */)
|
|
err = kthread_stop(tsk);
|
|
|
|
put_task_struct(tsk);
|
|
}
|
|
|
|
out_rq:
|
|
i915_request_put(rq);
|
|
out_obj:
|
|
i915_gem_object_put(obj);
|
|
fini:
|
|
hang_fini(&h);
|
|
if (intel_gt_is_wedged(gt))
|
|
return -EIO;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_reset_evict_ggtt(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
|
|
return __igt_reset_evict_vma(gt, >->ggtt->vm,
|
|
evict_vma, EXEC_OBJECT_WRITE);
|
|
}
|
|
|
|
static int igt_reset_evict_ppgtt(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
struct i915_ppgtt *ppgtt;
|
|
int err;
|
|
|
|
/* aliasing == global gtt locking, covered above */
|
|
if (INTEL_PPGTT(gt->i915) < INTEL_PPGTT_FULL)
|
|
return 0;
|
|
|
|
ppgtt = i915_ppgtt_create(gt, 0);
|
|
if (IS_ERR(ppgtt))
|
|
return PTR_ERR(ppgtt);
|
|
|
|
err = __igt_reset_evict_vma(gt, &ppgtt->vm,
|
|
evict_vma, EXEC_OBJECT_WRITE);
|
|
i915_vm_put(&ppgtt->vm);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_reset_evict_fence(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
|
|
return __igt_reset_evict_vma(gt, >->ggtt->vm,
|
|
evict_fence, EXEC_OBJECT_NEEDS_FENCE);
|
|
}
|
|
|
|
static int wait_for_others(struct intel_gt *gt,
|
|
struct intel_engine_cs *exclude)
|
|
{
|
|
struct intel_engine_cs *engine;
|
|
enum intel_engine_id id;
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
if (engine == exclude)
|
|
continue;
|
|
|
|
if (!wait_for_idle(engine))
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int igt_reset_queue(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
struct i915_gpu_error *global = >->i915->gpu_error;
|
|
struct intel_engine_cs *engine;
|
|
enum intel_engine_id id;
|
|
struct hang h;
|
|
int err;
|
|
|
|
/* Check that we replay pending requests following a hang */
|
|
|
|
igt_global_reset_lock(gt);
|
|
|
|
err = hang_init(&h, gt);
|
|
if (err)
|
|
goto unlock;
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
struct intel_selftest_saved_policy saved;
|
|
struct i915_request *prev;
|
|
IGT_TIMEOUT(end_time);
|
|
unsigned int count;
|
|
bool using_guc = intel_engine_uses_guc(engine);
|
|
|
|
if (!intel_engine_can_store_dword(engine))
|
|
continue;
|
|
|
|
if (using_guc) {
|
|
err = intel_selftest_modify_policy(engine, &saved,
|
|
SELFTEST_SCHEDULER_MODIFY_NO_HANGCHECK);
|
|
if (err) {
|
|
pr_err("[%s] Modify policy failed: %d!\n", engine->name, err);
|
|
goto fini;
|
|
}
|
|
}
|
|
|
|
prev = hang_create_request(&h, engine);
|
|
if (IS_ERR(prev)) {
|
|
err = PTR_ERR(prev);
|
|
pr_err("[%s] Create 'prev' hang request failed: %d!\n", engine->name, err);
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_get(prev);
|
|
i915_request_add(prev);
|
|
|
|
count = 0;
|
|
do {
|
|
struct i915_request *rq;
|
|
unsigned int reset_count;
|
|
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n", engine->name, err);
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
/*
|
|
* XXX We don't handle resetting the kernel context
|
|
* very well. If we trigger a device reset twice in
|
|
* quick succession while the kernel context is
|
|
* executing, we may end up skipping the breadcrumb.
|
|
* This is really only a problem for the selftest as
|
|
* normally there is a large interlude between resets
|
|
* (hangcheck), or we focus on resetting just one
|
|
* engine and so avoid repeatedly resetting innocents.
|
|
*/
|
|
err = wait_for_others(gt, engine);
|
|
if (err) {
|
|
pr_err("%s(%s): Failed to idle other inactive engines after device reset\n",
|
|
__func__, engine->name);
|
|
i915_request_put(rq);
|
|
i915_request_put(prev);
|
|
|
|
GEM_TRACE_DUMP();
|
|
intel_gt_set_wedged(gt);
|
|
goto restore;
|
|
}
|
|
|
|
if (!wait_until_running(&h, prev)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s(%s): Failed to start request %llx, at %x\n",
|
|
__func__, engine->name,
|
|
prev->fence.seqno, hws_seqno(&h, prev));
|
|
intel_engine_dump(engine, &p,
|
|
"%s\n", engine->name);
|
|
|
|
i915_request_put(rq);
|
|
i915_request_put(prev);
|
|
|
|
intel_gt_set_wedged(gt);
|
|
|
|
err = -EIO;
|
|
goto restore;
|
|
}
|
|
|
|
reset_count = fake_hangcheck(gt, BIT(id));
|
|
|
|
if (prev->fence.error != -EIO) {
|
|
pr_err("GPU reset not recorded on hanging request [fence.error=%d]!\n",
|
|
prev->fence.error);
|
|
i915_request_put(rq);
|
|
i915_request_put(prev);
|
|
err = -EINVAL;
|
|
goto restore;
|
|
}
|
|
|
|
if (rq->fence.error) {
|
|
pr_err("Fence error status not zero [%d] after unrelated reset\n",
|
|
rq->fence.error);
|
|
i915_request_put(rq);
|
|
i915_request_put(prev);
|
|
err = -EINVAL;
|
|
goto restore;
|
|
}
|
|
|
|
if (i915_reset_count(global) == reset_count) {
|
|
pr_err("No GPU reset recorded!\n");
|
|
i915_request_put(rq);
|
|
i915_request_put(prev);
|
|
err = -EINVAL;
|
|
goto restore;
|
|
}
|
|
|
|
i915_request_put(prev);
|
|
prev = rq;
|
|
count++;
|
|
} while (time_before(jiffies, end_time));
|
|
pr_info("%s: Completed %d queued resets\n",
|
|
engine->name, count);
|
|
|
|
*h.batch = MI_BATCH_BUFFER_END;
|
|
intel_gt_chipset_flush(engine->gt);
|
|
|
|
i915_request_put(prev);
|
|
|
|
restore:
|
|
if (using_guc) {
|
|
int err2 = intel_selftest_restore_policy(engine, &saved);
|
|
|
|
if (err2)
|
|
pr_err("%s:%d> [%s] Restore policy failed: %d!\n",
|
|
__func__, __LINE__, engine->name, err2);
|
|
if (err == 0)
|
|
err = err2;
|
|
}
|
|
if (err)
|
|
goto fini;
|
|
|
|
err = igt_flush_test(gt->i915);
|
|
if (err) {
|
|
pr_err("[%s] Flush failed: %d!\n", engine->name, err);
|
|
break;
|
|
}
|
|
}
|
|
|
|
fini:
|
|
hang_fini(&h);
|
|
unlock:
|
|
igt_global_reset_unlock(gt);
|
|
|
|
if (intel_gt_is_wedged(gt))
|
|
return -EIO;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_handle_error(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
struct i915_gpu_error *global = >->i915->gpu_error;
|
|
struct intel_engine_cs *engine;
|
|
struct hang h;
|
|
struct i915_request *rq;
|
|
struct i915_gpu_coredump *error;
|
|
int err;
|
|
|
|
engine = intel_selftest_find_any_engine(gt);
|
|
|
|
/* Check that we can issue a global GPU and engine reset */
|
|
|
|
if (!intel_has_reset_engine(gt))
|
|
return 0;
|
|
|
|
if (!engine || !intel_engine_can_store_dword(engine))
|
|
return 0;
|
|
|
|
err = hang_init(&h, gt);
|
|
if (err) {
|
|
pr_err("[%s] Hang init failed: %d!\n", engine->name, err);
|
|
return err;
|
|
}
|
|
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n", engine->name, err);
|
|
goto err_fini;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
if (!wait_until_running(&h, rq)) {
|
|
struct drm_printer p = drm_info_printer(gt->i915->drm.dev);
|
|
|
|
pr_err("%s: Failed to start request %llx, at %x\n",
|
|
__func__, rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_engine_dump(rq->engine, &p, "%s\n", rq->engine->name);
|
|
|
|
intel_gt_set_wedged(gt);
|
|
|
|
err = -EIO;
|
|
goto err_request;
|
|
}
|
|
|
|
/* Temporarily disable error capture */
|
|
error = xchg(&global->first_error, (void *)-1);
|
|
|
|
intel_gt_handle_error(gt, engine->mask, 0, NULL);
|
|
|
|
xchg(&global->first_error, error);
|
|
|
|
if (rq->fence.error != -EIO) {
|
|
pr_err("Guilty request not identified!\n");
|
|
err = -EINVAL;
|
|
goto err_request;
|
|
}
|
|
|
|
err_request:
|
|
i915_request_put(rq);
|
|
err_fini:
|
|
hang_fini(&h);
|
|
return err;
|
|
}
|
|
|
|
static int __igt_atomic_reset_engine(struct intel_engine_cs *engine,
|
|
const struct igt_atomic_section *p,
|
|
const char *mode)
|
|
{
|
|
struct tasklet_struct * const t = &engine->sched_engine->tasklet;
|
|
int err;
|
|
|
|
GEM_TRACE("i915_reset_engine(%s:%s) under %s\n",
|
|
engine->name, mode, p->name);
|
|
|
|
if (t->func)
|
|
tasklet_disable(t);
|
|
if (strcmp(p->name, "softirq"))
|
|
local_bh_disable();
|
|
p->critical_section_begin();
|
|
|
|
err = __intel_engine_reset_bh(engine, NULL);
|
|
|
|
p->critical_section_end();
|
|
if (strcmp(p->name, "softirq"))
|
|
local_bh_enable();
|
|
if (t->func) {
|
|
tasklet_enable(t);
|
|
tasklet_hi_schedule(t);
|
|
}
|
|
|
|
if (err)
|
|
pr_err("i915_reset_engine(%s:%s) failed under %s\n",
|
|
engine->name, mode, p->name);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int igt_atomic_reset_engine(struct intel_engine_cs *engine,
|
|
const struct igt_atomic_section *p)
|
|
{
|
|
struct i915_request *rq;
|
|
struct hang h;
|
|
int err;
|
|
|
|
err = __igt_atomic_reset_engine(engine, p, "idle");
|
|
if (err)
|
|
return err;
|
|
|
|
err = hang_init(&h, engine->gt);
|
|
if (err) {
|
|
pr_err("[%s] Hang init failed: %d!\n", engine->name, err);
|
|
return err;
|
|
}
|
|
|
|
rq = hang_create_request(&h, engine);
|
|
if (IS_ERR(rq)) {
|
|
err = PTR_ERR(rq);
|
|
pr_err("[%s] Create hang request failed: %d!\n", engine->name, err);
|
|
goto out;
|
|
}
|
|
|
|
i915_request_get(rq);
|
|
i915_request_add(rq);
|
|
|
|
if (wait_until_running(&h, rq)) {
|
|
err = __igt_atomic_reset_engine(engine, p, "active");
|
|
} else {
|
|
pr_err("%s(%s): Failed to start request %llx, at %x\n",
|
|
__func__, engine->name,
|
|
rq->fence.seqno, hws_seqno(&h, rq));
|
|
intel_gt_set_wedged(engine->gt);
|
|
err = -EIO;
|
|
}
|
|
|
|
if (err == 0) {
|
|
struct intel_wedge_me w;
|
|
|
|
intel_wedge_on_timeout(&w, engine->gt, HZ / 20 /* 50ms */)
|
|
i915_request_wait(rq, 0, MAX_SCHEDULE_TIMEOUT);
|
|
if (intel_gt_is_wedged(engine->gt))
|
|
err = -EIO;
|
|
}
|
|
|
|
i915_request_put(rq);
|
|
out:
|
|
hang_fini(&h);
|
|
return err;
|
|
}
|
|
|
|
static int igt_reset_engines_atomic(void *arg)
|
|
{
|
|
struct intel_gt *gt = arg;
|
|
const typeof(*igt_atomic_phases) *p;
|
|
int err = 0;
|
|
|
|
/* Check that the engines resets are usable from atomic context */
|
|
|
|
if (!intel_has_reset_engine(gt))
|
|
return 0;
|
|
|
|
if (intel_uc_uses_guc_submission(>->uc))
|
|
return 0;
|
|
|
|
igt_global_reset_lock(gt);
|
|
|
|
/* Flush any requests before we get started and check basics */
|
|
if (!igt_force_reset(gt))
|
|
goto unlock;
|
|
|
|
for (p = igt_atomic_phases; p->name; p++) {
|
|
struct intel_engine_cs *engine;
|
|
enum intel_engine_id id;
|
|
|
|
for_each_engine(engine, gt, id) {
|
|
err = igt_atomic_reset_engine(engine, p);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
/* As we poke around the guts, do a full reset before continuing. */
|
|
igt_force_reset(gt);
|
|
unlock:
|
|
igt_global_reset_unlock(gt);
|
|
|
|
return err;
|
|
}
|
|
|
|
int intel_hangcheck_live_selftests(struct drm_i915_private *i915)
|
|
{
|
|
static const struct i915_subtest tests[] = {
|
|
SUBTEST(igt_hang_sanitycheck),
|
|
SUBTEST(igt_reset_nop),
|
|
SUBTEST(igt_reset_nop_engine),
|
|
SUBTEST(igt_reset_idle_engine),
|
|
SUBTEST(igt_reset_active_engine),
|
|
SUBTEST(igt_reset_fail_engine),
|
|
SUBTEST(igt_reset_engines),
|
|
SUBTEST(igt_reset_engines_atomic),
|
|
SUBTEST(igt_reset_queue),
|
|
SUBTEST(igt_reset_wait),
|
|
SUBTEST(igt_reset_evict_ggtt),
|
|
SUBTEST(igt_reset_evict_ppgtt),
|
|
SUBTEST(igt_reset_evict_fence),
|
|
SUBTEST(igt_handle_error),
|
|
};
|
|
struct intel_gt *gt = to_gt(i915);
|
|
intel_wakeref_t wakeref;
|
|
int err;
|
|
|
|
if (!intel_has_gpu_reset(gt))
|
|
return 0;
|
|
|
|
if (intel_gt_is_wedged(gt))
|
|
return -EIO; /* we're long past hope of a successful reset */
|
|
|
|
wakeref = intel_runtime_pm_get(gt->uncore->rpm);
|
|
|
|
err = intel_gt_live_subtests(tests, gt);
|
|
|
|
intel_runtime_pm_put(gt->uncore->rpm, wakeref);
|
|
|
|
return err;
|
|
}
|