From patchwork Mon Jun 14 16:26:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Hellstrom X-Patchwork-Id: 12319419 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A29F1C49EA3 for ; Mon, 14 Jun 2021 16:27:02 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7726E61159 for ; Mon, 14 Jun 2021 16:27:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7726E61159 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C4F8689E01; Mon, 14 Jun 2021 16:26:50 +0000 (UTC) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2E27489EB1; Mon, 14 Jun 2021 16:26:47 +0000 (UTC) IronPort-SDR: IZBfLLu9RnzHIhH0zjMlG7dQA8q+jGOOwlskA9O4RFhBmrE0ZAZ3xs72UqxCLV97TTNWwA3UL4 PLRArrT4Zogw== X-IronPort-AV: E=McAfee;i="6200,9189,10015"; a="192953481" X-IronPort-AV: E=Sophos;i="5.83,273,1616482800"; d="scan'208";a="192953481" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2021 09:26:39 -0700 IronPort-SDR: YdnGRu5oQdYi+R7OkcOMp0Lp7Coi/l1BdXiEwCptfmJRemMc1Ks1UeI95Ckcp7iOJrgznE5QD0 cxhw2AeS2bxw== X-IronPort-AV: E=Sophos;i="5.83,273,1616482800"; d="scan'208";a="449946724" Received: from fnygreen-mobl1.ger.corp.intel.com (HELO thellst-mobl1.intel.com) ([10.249.254.50]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2021 09:26:37 -0700 From: =?utf-8?q?Thomas_Hellstr=C3=B6m?= To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Mon, 14 Jun 2021 18:26:08 +0200 Message-Id: <20210614162612.294869-9-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210614162612.294869-1-thomas.hellstrom@linux.intel.com> References: <20210614162612.294869-1-thomas.hellstrom@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 08/12] drm/i915/gt: Pipelined clear X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , matthew.auld@intel.com, Chris Wilson Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Update the PTE and emit a clear within a single unpreemptible packet such that we can schedule and pipeline clears. Signed-off-by: Chris Wilson Co-developed-by: Thomas Hellström Signed-off-by: Thomas Hellström Reviewed-by: Matthew Auld --- v3: - Handle engine instances correctly (Reported by Matthew Auld) --- drivers/gpu/drm/i915/gt/intel_migrate.c | 143 ++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_migrate.h | 20 +++ drivers/gpu/drm/i915/gt/selftest_migrate.c | 163 +++++++++++++++++++++ 3 files changed, 326 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_migrate.c b/drivers/gpu/drm/i915/gt/intel_migrate.c index e2e860063e7b..ba4009120b33 100644 --- a/drivers/gpu/drm/i915/gt/intel_migrate.c +++ b/drivers/gpu/drm/i915/gt/intel_migrate.c @@ -488,6 +488,114 @@ intel_context_migrate_copy(struct intel_context *ce, return err; } +static int emit_clear(struct i915_request *rq, int size, u32 value) +{ + const int gen = INTEL_GEN(rq->engine->i915); + u32 instance = rq->engine->instance; + u32 *cs; + + GEM_BUG_ON(size >> PAGE_SHIFT > S16_MAX); + + cs = intel_ring_begin(rq, gen >= 8 ? 8 : 6); + if (IS_ERR(cs)) + return PTR_ERR(cs); + + if (gen >= 8) { + *cs++ = XY_COLOR_BLT_CMD | BLT_WRITE_RGBA | (7 - 2); + *cs++ = BLT_DEPTH_32 | BLT_ROP_COLOR_COPY | PAGE_SIZE; + *cs++ = 0; + *cs++ = size >> PAGE_SHIFT << 16 | PAGE_SIZE / 4; + *cs++ = 0; /* offset */ + *cs++ = instance; + *cs++ = value; + *cs++ = MI_NOOP; + } else { + GEM_BUG_ON(instance); + *cs++ = XY_COLOR_BLT_CMD | BLT_WRITE_RGBA | (6 - 2); + *cs++ = BLT_DEPTH_32 | BLT_ROP_COLOR_COPY | PAGE_SIZE; + *cs++ = 0; + *cs++ = size >> PAGE_SHIFT << 16 | PAGE_SIZE / 4; + *cs++ = 0; + *cs++ = value; + } + + intel_ring_advance(rq, cs); + return 0; +} + +int +intel_context_migrate_clear(struct intel_context *ce, + struct dma_fence *await, + struct scatterlist *sg, + enum i915_cache_level cache_level, + bool is_lmem, + u32 value, + struct i915_request **out) +{ + struct sgt_dma it = sg_sgt(sg); + struct i915_request *rq; + int err; + + *out = NULL; + + GEM_BUG_ON(ce->ring->size < SZ_64K); + + do { + int len; + + rq = i915_request_create(ce); + if (IS_ERR(rq)) { + err = PTR_ERR(rq); + goto out_ce; + } + + if (await) { + err = i915_request_await_dma_fence(rq, await); + if (err) + goto out_rq; + + if (rq->engine->emit_init_breadcrumb) { + err = rq->engine->emit_init_breadcrumb(rq); + if (err) + goto out_rq; + } + + await = NULL; + } + + /* The PTE updates + clear must not be interrupted. */ + err = emit_no_arbitration(rq); + if (err) + goto out_rq; + + len = emit_pte(rq, &it, cache_level, is_lmem, 0, CHUNK_SZ); + if (len <= 0) { + err = len; + goto out_rq; + } + + err = rq->engine->emit_flush(rq, EMIT_INVALIDATE); + if (err) + goto out_rq; + + err = emit_clear(rq, len, value); + + /* Arbitration is re-enabled between requests. */ +out_rq: + if (*out) + i915_request_put(*out); + *out = i915_request_get(rq); + i915_request_add(rq); + if (err || !it.sg || !sg_dma_len(it.sg)) + break; + + cond_resched(); + } while (1); + +out_ce: + return err; +} + int intel_migrate_copy(struct intel_migrate *m, struct i915_gem_ww_ctx *ww, struct dma_fence *await, @@ -526,6 +634,41 @@ int intel_migrate_copy(struct intel_migrate *m, return err; } +int +intel_migrate_clear(struct intel_migrate *m, + struct i915_gem_ww_ctx *ww, + struct dma_fence *await, + struct scatterlist *sg, + enum i915_cache_level cache_level, + bool is_lmem, + u32 value, + struct i915_request **out) +{ + struct intel_context *ce; + int err; + + *out = NULL; + if (!m->context) + return -ENODEV; + + ce = intel_migrate_create_context(m); + if (IS_ERR(ce)) + ce = intel_context_get(m->context); + GEM_BUG_ON(IS_ERR(ce)); + + err = intel_context_pin_ww(ce, ww); + if (err) + goto out; + + err = intel_context_migrate_clear(ce, await, sg, cache_level, + is_lmem, value, out); + + intel_context_unpin(ce); +out: + intel_context_put(ce); + return err; +} + void intel_migrate_fini(struct intel_migrate *m) { struct intel_context *ce; diff --git a/drivers/gpu/drm/i915/gt/intel_migrate.h b/drivers/gpu/drm/i915/gt/intel_migrate.h index 32c61190ed73..4e18e755a00b 100644 --- a/drivers/gpu/drm/i915/gt/intel_migrate.h +++ b/drivers/gpu/drm/i915/gt/intel_migrate.h @@ -6,6 +6,8 @@ #ifndef __INTEL_MIGRATE__ #define __INTEL_MIGRATE__ +#include + #include "intel_migrate_types.h" struct dma_fence; @@ -40,6 +42,24 @@ int intel_context_migrate_copy(struct intel_context *ce, bool dst_is_lmem, struct i915_request **out); +int +intel_migrate_clear(struct intel_migrate *m, + struct i915_gem_ww_ctx *ww, + struct dma_fence *await, + struct scatterlist *sg, + enum i915_cache_level cache_level, + bool is_lmem, + u32 value, + struct i915_request **out); +int +intel_context_migrate_clear(struct intel_context *ce, + struct dma_fence *await, + struct scatterlist *sg, + enum i915_cache_level cache_level, + bool is_lmem, + u32 value, + struct i915_request **out); + void intel_migrate_fini(struct intel_migrate *m); #endif /* __INTEL_MIGRATE__ */ diff --git a/drivers/gpu/drm/i915/gt/selftest_migrate.c b/drivers/gpu/drm/i915/gt/selftest_migrate.c index 9784d149ebf1..159c8656e1b0 100644 --- a/drivers/gpu/drm/i915/gt/selftest_migrate.c +++ b/drivers/gpu/drm/i915/gt/selftest_migrate.c @@ -129,6 +129,82 @@ static int copy(struct intel_migrate *migrate, return err; } +static int clear(struct intel_migrate *migrate, + int (*fn)(struct intel_migrate *migrate, + struct i915_gem_ww_ctx *ww, + struct drm_i915_gem_object *obj, + u32 value, + struct i915_request **out), + u32 sz, struct rnd_state *prng) +{ + struct drm_i915_private *i915 = migrate->context->engine->i915; + struct drm_i915_gem_object *obj; + struct i915_request *rq; + struct i915_gem_ww_ctx ww; + u32 *vaddr; + int err = 0; + int i; + + obj = create_lmem_or_internal(i915, sz); + if (IS_ERR(obj)) + return 0; + + for_i915_gem_ww(&ww, err, true) { + err = i915_gem_object_lock(obj, &ww); + if (err) + continue; + + vaddr = i915_gem_object_pin_map(obj, I915_MAP_WC); + if (IS_ERR(vaddr)) { + err = PTR_ERR(vaddr); + continue; + } + + for (i = 0; i < sz / sizeof(u32); i++) + vaddr[i] = ~i; + i915_gem_object_flush_map(obj); + + err = fn(migrate, &ww, obj, sz, &rq); + if (!err) + continue; + + if (err != -EDEADLK && err != -EINTR && err != -ERESTARTSYS) + pr_err("%ps failed, size: %u\n", fn, sz); + if (rq) { + i915_request_wait(rq, 0, HZ); + i915_request_put(rq); + } + i915_gem_object_unpin_map(obj); + } + if (err) + goto err_out; + + if (rq) { + if (i915_request_wait(rq, 0, HZ) < 0) { + pr_err("%ps timed out, size: %u\n", fn, sz); + err = -ETIME; + } + i915_request_put(rq); + } + + for (i = 0; !err && i < sz / PAGE_SIZE; i++) { + int x = i * 1024 + i915_prandom_u32_max_state(1024, prng); + + if (vaddr[x] != sz) { + pr_err("%ps failed, size: %u, offset: %zu\n", + fn, sz, x * sizeof(u32)); + igt_hexdump(vaddr + i * 1024, 4096); + err = -EINVAL; + } + } + + i915_gem_object_unpin_map(obj); +err_out: + i915_gem_object_put(obj); + + return err; +} + static int __migrate_copy(struct intel_migrate *migrate, struct i915_gem_ww_ctx *ww, struct drm_i915_gem_object *src, @@ -169,6 +245,44 @@ global_copy(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng) return copy(migrate, __global_copy, sz, prng); } +static int __migrate_clear(struct intel_migrate *migrate, + struct i915_gem_ww_ctx *ww, + struct drm_i915_gem_object *obj, + u32 value, + struct i915_request **out) +{ + return intel_migrate_clear(migrate, ww, NULL, + obj->mm.pages->sgl, + obj->cache_level, + i915_gem_object_is_lmem(obj), + value, out); +} + +static int __global_clear(struct intel_migrate *migrate, + struct i915_gem_ww_ctx *ww, + struct drm_i915_gem_object *obj, + u32 value, + struct i915_request **out) +{ + return intel_context_migrate_clear(migrate->context, NULL, + obj->mm.pages->sgl, + obj->cache_level, + i915_gem_object_is_lmem(obj), + value, out); +} + +static int +migrate_clear(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng) +{ + return clear(migrate, __migrate_clear, sz, prng); +} + +static int +global_clear(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng) +{ + return clear(migrate, __global_clear, sz, prng); +} + static int live_migrate_copy(void *arg) { struct intel_migrate *migrate = arg; @@ -190,6 +304,28 @@ static int live_migrate_copy(void *arg) return 0; } +static int live_migrate_clear(void *arg) +{ + struct intel_migrate *migrate = arg; + struct drm_i915_private *i915 = migrate->context->engine->i915; + I915_RND_STATE(prng); + int i; + + for (i = 0; i < ARRAY_SIZE(sizes); i++) { + int err; + + err = migrate_clear(migrate, sizes[i], &prng); + if (err == 0) + err = global_clear(migrate, sizes[i], &prng); + + i915_gem_drain_freed_objects(i915); + if (err) + return err; + } + + return 0; +} + struct threaded_migrate { struct intel_migrate *migrate; struct task_struct *tsk; @@ -271,12 +407,39 @@ static int thread_global_copy(void *arg) return threaded_migrate(arg, __thread_global_copy, 0); } +static int __thread_migrate_clear(void *arg) +{ + struct threaded_migrate *tm = arg; + + return migrate_clear(tm->migrate, 2 * CHUNK_SZ, &tm->prng); +} + +static int __thread_global_clear(void *arg) +{ + struct threaded_migrate *tm = arg; + + return global_clear(tm->migrate, 2 * CHUNK_SZ, &tm->prng); +} + +static int thread_migrate_clear(void *arg) +{ + return threaded_migrate(arg, __thread_migrate_clear, 0); +} + +static int thread_global_clear(void *arg) +{ + return threaded_migrate(arg, __thread_global_clear, 0); +} + int intel_migrate_live_selftests(struct drm_i915_private *i915) { static const struct i915_subtest tests[] = { SUBTEST(live_migrate_copy), + SUBTEST(live_migrate_clear), SUBTEST(thread_migrate_copy), + SUBTEST(thread_migrate_clear), SUBTEST(thread_global_copy), + SUBTEST(thread_global_clear), }; struct intel_migrate m; int err;