diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem_context.c')
-rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_gem_context.c | 301 |
1 files changed, 284 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c index ddb03f009232..1c92560d35da 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c @@ -23,9 +23,11 @@ */ #include "../i915_selftest.h" +#include "i915_random.h" #include "igt_flush_test.h" #include "mock_drm.h" +#include "mock_gem_device.h" #include "huge_gem_object.h" #define DW_PER_PAGE (PAGE_SIZE / sizeof(u32)) @@ -62,12 +64,12 @@ gpu_fill_dw(struct i915_vma *vma, u64 offset, unsigned long count, u32 value) *cmd++ = value; } else if (gen >= 4) { *cmd++ = MI_STORE_DWORD_IMM_GEN4 | - (gen < 6 ? 1 << 22 : 0); + (gen < 6 ? MI_USE_GGTT : 0); *cmd++ = 0; *cmd++ = offset; *cmd++ = value; } else { - *cmd++ = MI_STORE_DWORD_IMM | 1 << 22; + *cmd++ = MI_STORE_DWORD_IMM | MI_MEM_VIRTUAL; *cmd++ = offset; *cmd++ = value; } @@ -114,7 +116,7 @@ static int gpu_fill(struct drm_i915_gem_object *obj, { struct drm_i915_private *i915 = to_i915(obj->base.dev); struct i915_address_space *vm = - ctx->ppgtt ? &ctx->ppgtt->base : &i915->ggtt.base; + ctx->ppgtt ? &ctx->ppgtt->vm : &i915->ggtt.vm; struct i915_request *rq; struct i915_vma *vma; struct i915_vma *batch; @@ -169,24 +171,28 @@ static int gpu_fill(struct drm_i915_gem_object *obj, if (err) goto err_request; - i915_vma_move_to_active(batch, rq, 0); + err = i915_vma_move_to_active(batch, rq, 0); + if (err) + goto skip_request; + + err = i915_vma_move_to_active(vma, rq, EXEC_OBJECT_WRITE); + if (err) + goto skip_request; + i915_gem_object_set_active_reference(batch->obj); i915_vma_unpin(batch); i915_vma_close(batch); - i915_vma_move_to_active(vma, rq, 0); i915_vma_unpin(vma); - reservation_object_lock(obj->resv, NULL); - reservation_object_add_excl_fence(obj->resv, &rq->fence); - reservation_object_unlock(obj->resv); - - __i915_request_add(rq, true); + i915_request_add(rq); return 0; +skip_request: + i915_request_skip(rq, err); err_request: - __i915_request_add(rq, false); + i915_request_add(rq); err_batch: i915_vma_unpin(batch); err_vma: @@ -247,9 +253,9 @@ static int cpu_check(struct drm_i915_gem_object *obj, unsigned int max) } for (; m < DW_PER_PAGE; m++) { - if (map[m] != 0xdeadbeef) { + if (map[m] != STACK_MAGIC) { pr_err("Invalid value at page %d, offset %d: found %x expected %x\n", - n, m, map[m], 0xdeadbeef); + n, m, map[m], STACK_MAGIC); err = -EINVAL; goto out_unmap; } @@ -289,7 +295,7 @@ create_test_object(struct i915_gem_context *ctx, { struct drm_i915_gem_object *obj; struct i915_address_space *vm = - ctx->ppgtt ? &ctx->ppgtt->base : &ctx->i915->ggtt.base; + ctx->ppgtt ? &ctx->ppgtt->vm : &ctx->i915->ggtt.vm; u64 size; int err; @@ -305,7 +311,7 @@ create_test_object(struct i915_gem_context *ctx, if (err) return ERR_PTR(err); - err = cpu_fill(obj, 0xdeadbeef); + err = cpu_fill(obj, STACK_MAGIC); if (err) { pr_err("Failed to fill object with cpu, err=%d\n", err); @@ -335,11 +341,15 @@ static int igt_ctx_exec(void *arg) bool first_shared_gtt = true; int err = -ENODEV; - /* Create a few different contexts (with different mm) and write + /* + * Create a few different contexts (with different mm) and write * through each ctx/mm using the GPU making sure those writes end * up in the expected pages of our obj. */ + if (!DRIVER_CAPS(i915)->has_logical_contexts) + return 0; + file = mock_file(i915); if (IS_ERR(file)) return PTR_ERR(file); @@ -366,6 +376,9 @@ static int igt_ctx_exec(void *arg) } for_each_engine(engine, i915, id) { + if (!engine->context_size) + continue; /* No logical context support in HW */ + if (!intel_engine_can_store_dword(engine)) continue; @@ -420,6 +433,237 @@ out_unlock: return err; } +static int igt_ctx_readonly(void *arg) +{ + struct drm_i915_private *i915 = arg; + struct drm_i915_gem_object *obj = NULL; + struct drm_file *file; + I915_RND_STATE(prng); + IGT_TIMEOUT(end_time); + LIST_HEAD(objects); + struct i915_gem_context *ctx; + struct i915_hw_ppgtt *ppgtt; + unsigned long ndwords, dw; + int err = -ENODEV; + + /* + * Create a few read-only objects (with the occasional writable object) + * and try to write into these object checking that the GPU discards + * any write to a read-only object. + */ + + file = mock_file(i915); + if (IS_ERR(file)) + return PTR_ERR(file); + + mutex_lock(&i915->drm.struct_mutex); + + ctx = i915_gem_create_context(i915, file->driver_priv); + if (IS_ERR(ctx)) { + err = PTR_ERR(ctx); + goto out_unlock; + } + + ppgtt = ctx->ppgtt ?: i915->mm.aliasing_ppgtt; + if (!ppgtt || !ppgtt->vm.has_read_only) { + err = 0; + goto out_unlock; + } + + ndwords = 0; + dw = 0; + while (!time_after(jiffies, end_time)) { + struct intel_engine_cs *engine; + unsigned int id; + + for_each_engine(engine, i915, id) { + if (!intel_engine_can_store_dword(engine)) + continue; + + if (!obj) { + obj = create_test_object(ctx, file, &objects); + if (IS_ERR(obj)) { + err = PTR_ERR(obj); + goto out_unlock; + } + + if (prandom_u32_state(&prng) & 1) + i915_gem_object_set_readonly(obj); + } + + intel_runtime_pm_get(i915); + err = gpu_fill(obj, ctx, engine, dw); + intel_runtime_pm_put(i915); + if (err) { + pr_err("Failed to fill dword %lu [%lu/%lu] with gpu (%s) in ctx %u [full-ppgtt? %s], err=%d\n", + ndwords, dw, max_dwords(obj), + engine->name, ctx->hw_id, + yesno(!!ctx->ppgtt), err); + goto out_unlock; + } + + if (++dw == max_dwords(obj)) { + obj = NULL; + dw = 0; + } + ndwords++; + } + } + pr_info("Submitted %lu dwords (across %u engines)\n", + ndwords, INTEL_INFO(i915)->num_rings); + + dw = 0; + list_for_each_entry(obj, &objects, st_link) { + unsigned int rem = + min_t(unsigned int, ndwords - dw, max_dwords(obj)); + unsigned int num_writes; + + num_writes = rem; + if (i915_gem_object_is_readonly(obj)) + num_writes = 0; + + err = cpu_check(obj, num_writes); + if (err) + break; + + dw += rem; + } + +out_unlock: + if (igt_flush_test(i915, I915_WAIT_LOCKED)) + err = -EIO; + mutex_unlock(&i915->drm.struct_mutex); + + mock_file_free(i915, file); + return err; +} + +static __maybe_unused const char * +__engine_name(struct drm_i915_private *i915, unsigned int engines) +{ + struct intel_engine_cs *engine; + unsigned int tmp; + + if (engines == ALL_ENGINES) + return "all"; + + for_each_engine_masked(engine, i915, engines, tmp) + return engine->name; + + return "none"; +} + +static int __igt_switch_to_kernel_context(struct drm_i915_private *i915, + struct i915_gem_context *ctx, + unsigned int engines) +{ + struct intel_engine_cs *engine; + unsigned int tmp; + int err; + + GEM_TRACE("Testing %s\n", __engine_name(i915, engines)); + for_each_engine_masked(engine, i915, engines, tmp) { + struct i915_request *rq; + + rq = i915_request_alloc(engine, ctx); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + i915_request_add(rq); + } + + err = i915_gem_switch_to_kernel_context(i915); + if (err) + return err; + + for_each_engine_masked(engine, i915, engines, tmp) { + if (!engine_has_kernel_context_barrier(engine)) { + pr_err("kernel context not last on engine %s!\n", + engine->name); + return -EINVAL; + } + } + + err = i915_gem_wait_for_idle(i915, + I915_WAIT_LOCKED, + MAX_SCHEDULE_TIMEOUT); + if (err) + return err; + + GEM_BUG_ON(i915->gt.active_requests); + for_each_engine_masked(engine, i915, engines, tmp) { + if (engine->last_retired_context->gem_context != i915->kernel_context) { + pr_err("engine %s not idling in kernel context!\n", + engine->name); + return -EINVAL; + } + } + + err = i915_gem_switch_to_kernel_context(i915); + if (err) + return err; + + if (i915->gt.active_requests) { + pr_err("switch-to-kernel-context emitted %d requests even though it should already be idling in the kernel context\n", + i915->gt.active_requests); + return -EINVAL; + } + + for_each_engine_masked(engine, i915, engines, tmp) { + if (!intel_engine_has_kernel_context(engine)) { + pr_err("kernel context not last on engine %s!\n", + engine->name); + return -EINVAL; + } + } + + return 0; +} + +static int igt_switch_to_kernel_context(void *arg) +{ + struct drm_i915_private *i915 = arg; + struct intel_engine_cs *engine; + struct i915_gem_context *ctx; + enum intel_engine_id id; + int err; + + /* + * A core premise of switching to the kernel context is that + * if an engine is already idling in the kernel context, we + * do not emit another request and wake it up. The other being + * that we do indeed end up idling in the kernel context. + */ + + mutex_lock(&i915->drm.struct_mutex); + ctx = kernel_context(i915); + if (IS_ERR(ctx)) { + mutex_unlock(&i915->drm.struct_mutex); + return PTR_ERR(ctx); + } + + /* First check idling each individual engine */ + for_each_engine(engine, i915, id) { + err = __igt_switch_to_kernel_context(i915, ctx, BIT(id)); + if (err) + goto out_unlock; + } + + /* Now en masse */ + err = __igt_switch_to_kernel_context(i915, ctx, ALL_ENGINES); + if (err) + goto out_unlock; + +out_unlock: + GEM_TRACE_DUMP_ON(err); + if (igt_flush_test(i915, I915_WAIT_LOCKED)) + err = -EIO; + mutex_unlock(&i915->drm.struct_mutex); + + kernel_context_close(ctx); + return err; +} + static int fake_aliasing_ppgtt_enable(struct drm_i915_private *i915) { struct drm_i915_gem_object *obj; @@ -432,7 +676,7 @@ static int fake_aliasing_ppgtt_enable(struct drm_i915_private *i915) list_for_each_entry(obj, &i915->mm.bound_list, mm.link) { struct i915_vma *vma; - vma = i915_vma_instance(obj, &i915->ggtt.base, NULL); + vma = i915_vma_instance(obj, &i915->ggtt.vm, NULL); if (IS_ERR(vma)) continue; @@ -447,14 +691,37 @@ static void fake_aliasing_ppgtt_disable(struct drm_i915_private *i915) i915_gem_fini_aliasing_ppgtt(i915); } +int i915_gem_context_mock_selftests(void) +{ + static const struct i915_subtest tests[] = { + SUBTEST(igt_switch_to_kernel_context), + }; + struct drm_i915_private *i915; + int err; + + i915 = mock_gem_device(); + if (!i915) + return -ENOMEM; + + err = i915_subtests(tests, i915); + + drm_dev_put(&i915->drm); + return err; +} + int i915_gem_context_live_selftests(struct drm_i915_private *dev_priv) { static const struct i915_subtest tests[] = { + SUBTEST(igt_switch_to_kernel_context), SUBTEST(igt_ctx_exec), + SUBTEST(igt_ctx_readonly), }; bool fake_alias = false; int err; + if (i915_terminally_wedged(&dev_priv->gpu_error)) + return 0; + /* Install a fake aliasing gtt for exercise */ if (USES_PPGTT(dev_priv) && !dev_priv->mm.aliasing_ppgtt) { mutex_lock(&dev_priv->drm.struct_mutex); |