From patchwork Thu May 17 21:26:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10407773 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7D26460353 for ; Thu, 17 May 2018 21:27:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6811228760 for ; Thu, 17 May 2018 21:27:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5CAC228767; Thu, 17 May 2018 21:27:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 049D928760 for ; Thu, 17 May 2018 21:27:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6EE0C6EBBC; Thu, 17 May 2018 21:26:59 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 146016EBBC for ; Thu, 17 May 2018 21:26:56 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 11742948-1500050 for multiple; Thu, 17 May 2018 22:26:42 +0100 Received: by haswell.alporthouse.com (sSMTP sendmail emulation); Thu, 17 May 2018 22:26:41 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Thu, 17 May 2018 22:26:32 +0100 Message-Id: <20180517212633.24934-3-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180517212633.24934-1-chris@chris-wilson.co.uk> References: <20180517212633.24934-1-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.65.138 X-Country: code=GB country="United Kingdom" ip=78.156.65.138 Subject: [Intel-gfx] [PATCH 3/4] drm/i915: Store a pointer to intel_context in i915_request X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yan.y.zhao@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP To ease the frequent and ugly pointer dance of &request->gem_context->engine[request->engine->id] during request submission, store that pointer as request->hw_context. One major advantage that we will exploit later is that this decouples the logical context state from the engine itself. v2: Set mock_context->ops so we don't crash and burn in selftests. Cleanups from Tvrtko. Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Acked-by: Zhenyu Wang Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/gvt/mmio_context.c | 6 +- drivers/gpu/drm/i915/gvt/mmio_context.h | 2 +- drivers/gpu/drm/i915/gvt/scheduler.c | 141 +++++++----------- drivers/gpu/drm/i915/gvt/scheduler.h | 1 - drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_gem.c | 12 +- drivers/gpu/drm/i915/i915_gem_context.c | 17 ++- drivers/gpu/drm/i915/i915_gem_context.h | 21 ++- drivers/gpu/drm/i915/i915_gpu_error.c | 3 +- drivers/gpu/drm/i915/i915_perf.c | 25 ++-- drivers/gpu/drm/i915/i915_request.c | 34 ++--- drivers/gpu/drm/i915/i915_request.h | 1 + drivers/gpu/drm/i915/intel_engine_cs.c | 54 ++++--- drivers/gpu/drm/i915/intel_guc_submission.c | 10 +- drivers/gpu/drm/i915/intel_lrc.c | 125 +++++++++------- drivers/gpu/drm/i915/intel_lrc.h | 7 - drivers/gpu/drm/i915/intel_ringbuffer.c | 100 ++++++++----- drivers/gpu/drm/i915/intel_ringbuffer.h | 9 +- drivers/gpu/drm/i915/selftests/mock_context.c | 7 + drivers/gpu/drm/i915/selftests/mock_engine.c | 41 +++-- 20 files changed, 321 insertions(+), 296 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c index 0f949554d118..708170e61625 100644 --- a/drivers/gpu/drm/i915/gvt/mmio_context.c +++ b/drivers/gpu/drm/i915/gvt/mmio_context.c @@ -446,9 +446,9 @@ static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, #define CTX_CONTEXT_CONTROL_VAL 0x03 -bool is_inhibit_context(struct i915_gem_context *ctx, int ring_id) +bool is_inhibit_context(struct intel_context *ce) { - u32 *reg_state = ctx->__engine[ring_id].lrc_reg_state; + const u32 *reg_state = ce->lrc_reg_state; u32 inhibit_mask = _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT); @@ -501,7 +501,7 @@ static void switch_mmio(struct intel_vgpu *pre, * itself. */ if (mmio->in_context && - !is_inhibit_context(s->shadow_ctx, ring_id)) + !is_inhibit_context(&s->shadow_ctx->__engine[ring_id])) continue; if (mmio->mask) diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.h b/drivers/gpu/drm/i915/gvt/mmio_context.h index 0439eb8057a8..5c3b9ff9f96a 100644 --- a/drivers/gpu/drm/i915/gvt/mmio_context.h +++ b/drivers/gpu/drm/i915/gvt/mmio_context.h @@ -49,7 +49,7 @@ void intel_gvt_switch_mmio(struct intel_vgpu *pre, void intel_gvt_init_engine_mmio_context(struct intel_gvt *gvt); -bool is_inhibit_context(struct i915_gem_context *ctx, int ring_id); +bool is_inhibit_context(struct intel_context *ce); int intel_vgpu_restore_inhibit_context(struct intel_vgpu *vgpu, struct i915_request *req); diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 17f9f8d7e148..e1760030dda1 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -54,11 +54,8 @@ static void set_context_pdp_root_pointer( static void update_shadow_pdps(struct intel_vgpu_workload *workload) { - struct intel_vgpu *vgpu = workload->vgpu; - int ring_id = workload->ring_id; - struct i915_gem_context *shadow_ctx = vgpu->submission.shadow_ctx; struct drm_i915_gem_object *ctx_obj = - shadow_ctx->__engine[ring_id].state->obj; + workload->req->hw_context->state->obj; struct execlist_ring_context *shadow_ring_context; struct page *page; @@ -128,9 +125,8 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload) struct intel_vgpu *vgpu = workload->vgpu; struct intel_gvt *gvt = vgpu->gvt; int ring_id = workload->ring_id; - struct i915_gem_context *shadow_ctx = vgpu->submission.shadow_ctx; struct drm_i915_gem_object *ctx_obj = - shadow_ctx->__engine[ring_id].state->obj; + workload->req->hw_context->state->obj; struct execlist_ring_context *shadow_ring_context; struct page *page; void *dst; @@ -280,10 +276,8 @@ static int shadow_context_status_change(struct notifier_block *nb, return NOTIFY_OK; } -static void shadow_context_descriptor_update(struct i915_gem_context *ctx, - struct intel_engine_cs *engine) +static void shadow_context_descriptor_update(struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); u64 desc = 0; desc = ce->lrc_desc; @@ -292,7 +286,7 @@ static void shadow_context_descriptor_update(struct i915_gem_context *ctx, * like GEN8_CTX_* cached in desc_template */ desc &= U64_MAX << 12; - desc |= ctx->desc_template & ((1ULL << 12) - 1); + desc |= ce->gem_context->desc_template & ((1ULL << 12) - 1); ce->lrc_desc = desc; } @@ -300,12 +294,11 @@ static void shadow_context_descriptor_update(struct i915_gem_context *ctx, static int copy_workload_to_ring_buffer(struct intel_vgpu_workload *workload) { struct intel_vgpu *vgpu = workload->vgpu; + struct i915_request *req = workload->req; void *shadow_ring_buffer_va; u32 *cs; - struct i915_request *req = workload->req; - if (IS_KABYLAKE(req->i915) && - is_inhibit_context(req->gem_context, req->engine->id)) + if (IS_KABYLAKE(req->i915) && is_inhibit_context(req->hw_context)) intel_vgpu_restore_inhibit_context(vgpu, req); /* allocate shadow ring buffer */ @@ -353,60 +346,56 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload) struct intel_vgpu_submission *s = &vgpu->submission; struct i915_gem_context *shadow_ctx = s->shadow_ctx; struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; - int ring_id = workload->ring_id; - struct intel_engine_cs *engine = dev_priv->engine[ring_id]; - struct intel_ring *ring; + struct intel_engine_cs *engine = dev_priv->engine[workload->ring_id]; + struct intel_context *ce; int ret; lockdep_assert_held(&dev_priv->drm.struct_mutex); - if (workload->shadowed) + if (workload->req) return 0; + /* pin shadow context by gvt even the shadow context will be pinned + * when i915 alloc request. That is because gvt will update the guest + * context from shadow context when workload is completed, and at that + * moment, i915 may already unpined the shadow context to make the + * shadow_ctx pages invalid. So gvt need to pin itself. After update + * the guest context, gvt can unpin the shadow_ctx safely. + */ + ce = intel_context_pin(shadow_ctx, engine); + if (IS_ERR(ce)) { + gvt_vgpu_err("fail to pin shadow context\n"); + return PTR_ERR(ce); + } + shadow_ctx->desc_template &= ~(0x3 << GEN8_CTX_ADDRESSING_MODE_SHIFT); shadow_ctx->desc_template |= workload->ctx_desc.addressing_mode << GEN8_CTX_ADDRESSING_MODE_SHIFT; - if (!test_and_set_bit(ring_id, s->shadow_ctx_desc_updated)) - shadow_context_descriptor_update(shadow_ctx, - dev_priv->engine[ring_id]); + if (!test_and_set_bit(workload->ring_id, s->shadow_ctx_desc_updated)) + shadow_context_descriptor_update(ce); ret = intel_gvt_scan_and_shadow_ringbuffer(workload); if (ret) - goto err_scan; + goto err_unpin; if ((workload->ring_id == RCS) && (workload->wa_ctx.indirect_ctx.size != 0)) { ret = intel_gvt_scan_and_shadow_wa_ctx(&workload->wa_ctx); if (ret) - goto err_scan; - } - - /* pin shadow context by gvt even the shadow context will be pinned - * when i915 alloc request. That is because gvt will update the guest - * context from shadow context when workload is completed, and at that - * moment, i915 may already unpined the shadow context to make the - * shadow_ctx pages invalid. So gvt need to pin itself. After update - * the guest context, gvt can unpin the shadow_ctx safely. - */ - ring = intel_context_pin(shadow_ctx, engine); - if (IS_ERR(ring)) { - ret = PTR_ERR(ring); - gvt_vgpu_err("fail to pin shadow context\n"); - goto err_shadow; + goto err_shadow; } ret = populate_shadow_context(workload); if (ret) - goto err_unpin; - workload->shadowed = true; + goto err_shadow; + return 0; -err_unpin: - intel_context_unpin(shadow_ctx, engine); err_shadow: release_shadow_wa_ctx(&workload->wa_ctx); -err_scan: +err_unpin: + intel_context_unpin(ce); return ret; } @@ -414,7 +403,6 @@ static int intel_gvt_generate_request(struct intel_vgpu_workload *workload) { int ring_id = workload->ring_id; struct drm_i915_private *dev_priv = workload->vgpu->gvt->dev_priv; - struct intel_engine_cs *engine = dev_priv->engine[ring_id]; struct i915_request *rq; struct intel_vgpu *vgpu = workload->vgpu; struct intel_vgpu_submission *s = &vgpu->submission; @@ -437,7 +425,6 @@ static int intel_gvt_generate_request(struct intel_vgpu_workload *workload) return 0; err_unpin: - intel_context_unpin(shadow_ctx, engine); release_shadow_wa_ctx(&workload->wa_ctx); return ret; } @@ -517,21 +504,13 @@ static int prepare_shadow_batch_buffer(struct intel_vgpu_workload *workload) return ret; } -static int update_wa_ctx_2_shadow_ctx(struct intel_shadow_wa_ctx *wa_ctx) +static void update_wa_ctx_2_shadow_ctx(struct intel_shadow_wa_ctx *wa_ctx) { - struct intel_vgpu_workload *workload = container_of(wa_ctx, - struct intel_vgpu_workload, - wa_ctx); - int ring_id = workload->ring_id; - struct intel_vgpu_submission *s = &workload->vgpu->submission; - struct i915_gem_context *shadow_ctx = s->shadow_ctx; - struct drm_i915_gem_object *ctx_obj = - shadow_ctx->__engine[ring_id].state->obj; - struct execlist_ring_context *shadow_ring_context; - struct page *page; - - page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN); - shadow_ring_context = kmap_atomic(page); + struct intel_vgpu_workload *workload = + container_of(wa_ctx, struct intel_vgpu_workload, wa_ctx); + struct i915_request *rq = workload->req; + struct execlist_ring_context *shadow_ring_context = + (struct execlist_ring_context *)rq->hw_context->lrc_reg_state; shadow_ring_context->bb_per_ctx_ptr.val = (shadow_ring_context->bb_per_ctx_ptr.val & @@ -539,9 +518,6 @@ static int update_wa_ctx_2_shadow_ctx(struct intel_shadow_wa_ctx *wa_ctx) shadow_ring_context->rcs_indirect_ctx.val = (shadow_ring_context->rcs_indirect_ctx.val & (~INDIRECT_CTX_ADDR_MASK)) | wa_ctx->indirect_ctx.shadow_gma; - - kunmap_atomic(shadow_ring_context); - return 0; } static int prepare_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx) @@ -670,12 +646,9 @@ static int prepare_workload(struct intel_vgpu_workload *workload) static int dispatch_workload(struct intel_vgpu_workload *workload) { struct intel_vgpu *vgpu = workload->vgpu; - struct intel_vgpu_submission *s = &vgpu->submission; - struct i915_gem_context *shadow_ctx = s->shadow_ctx; struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; int ring_id = workload->ring_id; - struct intel_engine_cs *engine = dev_priv->engine[ring_id]; - int ret = 0; + int ret; gvt_dbg_sched("ring id %d prepare to dispatch workload %p\n", ring_id, workload); @@ -687,10 +660,6 @@ static int dispatch_workload(struct intel_vgpu_workload *workload) goto out; ret = prepare_workload(workload); - if (ret) { - intel_context_unpin(shadow_ctx, engine); - goto out; - } out: if (ret) @@ -765,27 +734,23 @@ static struct intel_vgpu_workload *pick_next_workload( static void update_guest_context(struct intel_vgpu_workload *workload) { + struct i915_request *rq = workload->req; struct intel_vgpu *vgpu = workload->vgpu; struct intel_gvt *gvt = vgpu->gvt; - struct intel_vgpu_submission *s = &vgpu->submission; - struct i915_gem_context *shadow_ctx = s->shadow_ctx; - int ring_id = workload->ring_id; - struct drm_i915_gem_object *ctx_obj = - shadow_ctx->__engine[ring_id].state->obj; + struct drm_i915_gem_object *ctx_obj = rq->hw_context->state->obj; struct execlist_ring_context *shadow_ring_context; struct page *page; void *src; unsigned long context_gpa, context_page_num; int i; - gvt_dbg_sched("ring id %d workload lrca %x\n", ring_id, - workload->ctx_desc.lrca); - - context_page_num = gvt->dev_priv->engine[ring_id]->context_size; + gvt_dbg_sched("ring id %d workload lrca %x\n", rq->engine->id, + workload->ctx_desc.lrca); + context_page_num = rq->engine->context_size; context_page_num = context_page_num >> PAGE_SHIFT; - if (IS_BROADWELL(gvt->dev_priv) && ring_id == RCS) + if (IS_BROADWELL(gvt->dev_priv) && rq->engine->id == RCS) context_page_num = 19; i = 2; @@ -858,6 +823,7 @@ static void complete_current_workload(struct intel_gvt *gvt, int ring_id) scheduler->current_workload[ring_id]; struct intel_vgpu *vgpu = workload->vgpu; struct intel_vgpu_submission *s = &vgpu->submission; + struct i915_request *rq; int event; mutex_lock(&gvt->lock); @@ -866,11 +832,8 @@ static void complete_current_workload(struct intel_gvt *gvt, int ring_id) * switch to make sure request is completed. * For the workload w/o request, directly complete the workload. */ - if (workload->req) { - struct drm_i915_private *dev_priv = - workload->vgpu->gvt->dev_priv; - struct intel_engine_cs *engine = - dev_priv->engine[workload->ring_id]; + rq = fetch_and_zero(&workload->req); + if (rq) { wait_event(workload->shadow_ctx_status_wq, !atomic_read(&workload->shadow_ctx_active)); @@ -886,8 +849,6 @@ static void complete_current_workload(struct intel_gvt *gvt, int ring_id) workload->status = 0; } - i915_request_put(fetch_and_zero(&workload->req)); - if (!workload->status && !(vgpu->resetting_eng & ENGINE_MASK(ring_id))) { update_guest_context(workload); @@ -896,10 +857,13 @@ static void complete_current_workload(struct intel_gvt *gvt, int ring_id) INTEL_GVT_EVENT_MAX) intel_vgpu_trigger_virtual_event(vgpu, event); } - mutex_lock(&dev_priv->drm.struct_mutex); + /* unpin shadow ctx as the shadow_ctx update is done */ - intel_context_unpin(s->shadow_ctx, engine); - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_lock(&rq->i915->drm.struct_mutex); + intel_context_unpin(rq->hw_context); + mutex_unlock(&rq->i915->drm.struct_mutex); + + i915_request_put(rq); } gvt_dbg_sched("ring id %d complete workload %p status %d\n", @@ -1270,7 +1234,6 @@ alloc_workload(struct intel_vgpu *vgpu) atomic_set(&workload->shadow_ctx_active, 0); workload->status = -EINPROGRESS; - workload->shadowed = false; workload->vgpu = vgpu; return workload; diff --git a/drivers/gpu/drm/i915/gvt/scheduler.h b/drivers/gpu/drm/i915/gvt/scheduler.h index 6c644782193e..21eddab4a9cd 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.h +++ b/drivers/gpu/drm/i915/gvt/scheduler.h @@ -83,7 +83,6 @@ struct intel_vgpu_workload { struct i915_request *req; /* if this workload has been dispatched to i915? */ bool dispatched; - bool shadowed; int status; struct intel_vgpu_mm *shadow_mm; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 34c125e2d90c..e33c380b43e3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1950,6 +1950,7 @@ struct drm_i915_private { */ struct i915_perf_stream *exclusive_stream; + struct intel_context *pinned_ctx; u32 specific_ctx_id; struct hrtimer poll_check_timer; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a20f8db5729d..03874b50ada9 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3181,14 +3181,14 @@ void i915_gem_reset(struct drm_i915_private *dev_priv, i915_retire_requests(dev_priv); for_each_engine(engine, dev_priv, id) { - struct i915_gem_context *ctx; + struct intel_context *ce; i915_gem_reset_engine(engine, engine->hangcheck.active_request, stalled_mask & ENGINE_MASK(id)); - ctx = fetch_and_zero(&engine->last_retired_context); - if (ctx) - intel_context_unpin(ctx, engine); + ce = fetch_and_zero(&engine->last_retired_context); + if (ce) + intel_context_unpin(ce); /* * Ostensibily, we always want a context loaded for powersaving, @@ -4897,13 +4897,13 @@ void __i915_gem_object_release_unless_active(struct drm_i915_gem_object *obj) static void assert_kernel_context_is_current(struct drm_i915_private *i915) { - struct i915_gem_context *kernel_context = i915->kernel_context; + struct i915_gem_context *kctx = i915->kernel_context; struct intel_engine_cs *engine; enum intel_engine_id id; for_each_engine(engine, i915, id) { GEM_BUG_ON(__i915_gem_active_peek(&engine->timeline.last_request)); - GEM_BUG_ON(engine->last_retired_context != kernel_context); + GEM_BUG_ON(engine->last_retired_context->gem_context != kctx); } } diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 9e70f4dfa703..b69b18ef8120 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -127,14 +127,8 @@ static void i915_gem_context_free(struct i915_gem_context *ctx) for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) { struct intel_context *ce = &ctx->__engine[n]; - if (!ce->state) - continue; - - WARN_ON(ce->pin_count); - if (ce->ring) - intel_ring_free(ce->ring); - - __i915_gem_object_release_unless_active(ce->state->obj); + if (ce->ops) + ce->ops->destroy(ce); } kfree(ctx->name); @@ -266,6 +260,7 @@ __create_hw_context(struct drm_i915_private *dev_priv, struct drm_i915_file_private *file_priv) { struct i915_gem_context *ctx; + unsigned int n; int ret; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); @@ -283,6 +278,12 @@ __create_hw_context(struct drm_i915_private *dev_priv, ctx->i915 = dev_priv; ctx->sched.priority = I915_PRIORITY_NORMAL; + for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) { + struct intel_context *ce = &ctx->__engine[n]; + + ce->gem_context = ctx; + } + INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); INIT_LIST_HEAD(&ctx->handles_list); diff --git a/drivers/gpu/drm/i915/i915_gem_context.h b/drivers/gpu/drm/i915/i915_gem_context.h index ace3b129c189..749a4ff566f5 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.h +++ b/drivers/gpu/drm/i915/i915_gem_context.h @@ -45,6 +45,11 @@ struct intel_ring; #define DEFAULT_CONTEXT_HANDLE 0 +struct intel_context_ops { + void (*unpin)(struct intel_context *ce); + void (*destroy)(struct intel_context *ce); +}; + /** * struct i915_gem_context - client state * @@ -144,11 +149,14 @@ struct i915_gem_context { /** engine: per-engine logical HW state */ struct intel_context { + struct i915_gem_context *gem_context; struct i915_vma *state; struct intel_ring *ring; u32 *lrc_reg_state; u64 lrc_desc; int pin_count; + + const struct intel_context_ops *ops; } __engine[I915_NUM_ENGINES]; /** ring_size: size for allocating the per-engine ring buffer */ @@ -263,25 +271,22 @@ to_intel_context(struct i915_gem_context *ctx, return &ctx->__engine[engine->id]; } -static inline struct intel_ring * +static inline struct intel_context * intel_context_pin(struct i915_gem_context *ctx, struct intel_engine_cs *engine) { return engine->context_pin(engine, ctx); } -static inline void __intel_context_pin(struct i915_gem_context *ctx, - const struct intel_engine_cs *engine) +static inline void __intel_context_pin(struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); - GEM_BUG_ON(!ce->pin_count); ce->pin_count++; } -static inline void intel_context_unpin(struct i915_gem_context *ctx, - struct intel_engine_cs *engine) +static inline void intel_context_unpin(struct intel_context *ce) { - engine->context_unpin(engine, ctx); + GEM_BUG_ON(!ce->ops); + ce->ops->unpin(ce); } /* i915_gem_context.c */ diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 7cc7d3bc731b..145823f0b48e 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -1485,8 +1485,7 @@ static void gem_record_rings(struct i915_gpu_state *error) ee->ctx = i915_error_object_create(i915, - to_intel_context(ctx, - engine)->state); + request->hw_context->state); error->simulated |= i915_gem_context_no_error_capture(ctx); diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 019bd2d073ad..4f0eb84b3c00 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1221,7 +1221,7 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) dev_priv->perf.oa.specific_ctx_id = stream->ctx->hw_id; } else { struct intel_engine_cs *engine = dev_priv->engine[RCS]; - struct intel_ring *ring; + struct intel_context *ce; int ret; ret = i915_mutex_lock_interruptible(&dev_priv->drm); @@ -1234,19 +1234,19 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) * * NB: implied RCS engine... */ - ring = intel_context_pin(stream->ctx, engine); + ce = intel_context_pin(stream->ctx, engine); mutex_unlock(&dev_priv->drm.struct_mutex); - if (IS_ERR(ring)) - return PTR_ERR(ring); + if (IS_ERR(ce)) + return PTR_ERR(ce); + dev_priv->perf.oa.pinned_ctx = ce; /* * Explicitly track the ID (instead of calling * i915_ggtt_offset() on the fly) considering the difference * with gen8+ and execlists */ - dev_priv->perf.oa.specific_ctx_id = - i915_ggtt_offset(to_intel_context(stream->ctx, engine)->state); + dev_priv->perf.oa.specific_ctx_id = i915_ggtt_offset(ce->state); } return 0; @@ -1262,17 +1262,14 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) static void oa_put_render_ctx_id(struct i915_perf_stream *stream) { struct drm_i915_private *dev_priv = stream->dev_priv; + struct intel_context *ce; - if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) { - dev_priv->perf.oa.specific_ctx_id = INVALID_CTX_ID; - } else { - struct intel_engine_cs *engine = dev_priv->engine[RCS]; + dev_priv->perf.oa.specific_ctx_id = INVALID_CTX_ID; + ce = fetch_and_zero(&dev_priv->perf.oa.pinned_ctx); + if (ce) { mutex_lock(&dev_priv->drm.struct_mutex); - - dev_priv->perf.oa.specific_ctx_id = INVALID_CTX_ID; - intel_context_unpin(stream->ctx, engine); - + intel_context_unpin(ce); mutex_unlock(&dev_priv->drm.struct_mutex); } } diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index fe8810a6a339..fc499bcbd105 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -383,8 +383,8 @@ static void __retire_engine_request(struct intel_engine_cs *engine, * the subsequent request. */ if (engine->last_retired_context) - intel_context_unpin(engine->last_retired_context, engine); - engine->last_retired_context = rq->gem_context; + intel_context_unpin(engine->last_retired_context); + engine->last_retired_context = rq->hw_context; } static void __retire_engine_upto(struct intel_engine_cs *engine, @@ -456,7 +456,7 @@ static void i915_request_retire(struct i915_request *request) /* Retirement decays the ban score as it is a sign of ctx progress */ atomic_dec_if_positive(&request->gem_context->ban_score); - intel_context_unpin(request->gem_context, request->engine); + intel_context_unpin(request->hw_context); __retire_engine_upto(request->engine, request); @@ -657,7 +657,7 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) { struct drm_i915_private *i915 = engine->i915; struct i915_request *rq; - struct intel_ring *ring; + struct intel_context *ce; int ret; lockdep_assert_held(&i915->drm.struct_mutex); @@ -681,22 +681,21 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) * GGTT space, so do this first before we reserve a seqno for * ourselves. */ - ring = intel_context_pin(ctx, engine); - if (IS_ERR(ring)) - return ERR_CAST(ring); - GEM_BUG_ON(!ring); + ce = intel_context_pin(ctx, engine); + if (IS_ERR(ce)) + return ERR_CAST(ce); ret = reserve_gt(i915); if (ret) goto err_unpin; - ret = intel_ring_wait_for_space(ring, MIN_SPACE_FOR_ADD_REQUEST); + ret = intel_ring_wait_for_space(ce->ring, MIN_SPACE_FOR_ADD_REQUEST); if (ret) goto err_unreserve; /* Move our oldest request to the slab-cache (if not in use!) */ - rq = list_first_entry(&ring->request_list, typeof(*rq), ring_link); - if (!list_is_last(&rq->ring_link, &ring->request_list) && + rq = list_first_entry(&ce->ring->request_list, typeof(*rq), ring_link); + if (!list_is_last(&rq->ring_link, &ce->ring->request_list) && i915_request_completed(rq)) i915_request_retire(rq); @@ -761,8 +760,9 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) rq->i915 = i915; rq->engine = engine; rq->gem_context = ctx; - rq->ring = ring; - rq->timeline = ring->timeline; + rq->hw_context = ce; + rq->ring = ce->ring; + rq->timeline = ce->ring->timeline; GEM_BUG_ON(rq->timeline == &engine->timeline); spin_lock_init(&rq->lock); @@ -814,14 +814,14 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) goto err_unwind; /* Keep a second pin for the dual retirement along engine and ring */ - __intel_context_pin(rq->gem_context, engine); + __intel_context_pin(ce); /* Check that we didn't interrupt ourselves with a new request */ GEM_BUG_ON(rq->timeline->seqno != rq->fence.seqno); return rq; err_unwind: - rq->ring->emit = rq->head; + ce->ring->emit = rq->head; /* Make sure we didn't add ourselves to external state before freeing */ GEM_BUG_ON(!list_empty(&rq->active_list)); @@ -832,7 +832,7 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) err_unreserve: unreserve_gt(i915); err_unpin: - intel_context_unpin(ctx, engine); + intel_context_unpin(ce); return ERR_PTR(ret); } @@ -1018,8 +1018,8 @@ i915_request_await_object(struct i915_request *to, void __i915_request_add(struct i915_request *request, bool flush_caches) { struct intel_engine_cs *engine = request->engine; - struct intel_ring *ring = request->ring; struct i915_timeline *timeline = request->timeline; + struct intel_ring *ring = request->ring; struct i915_request *prev; u32 *cs; int err; diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h index dddecd9ffd0c..1bbbb7a9fa03 100644 --- a/drivers/gpu/drm/i915/i915_request.h +++ b/drivers/gpu/drm/i915/i915_request.h @@ -95,6 +95,7 @@ struct i915_request { */ struct i915_gem_context *gem_context; struct intel_engine_cs *engine; + struct intel_context *hw_context; struct intel_ring *ring; struct i915_timeline *timeline; struct intel_signal_node signaling; diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 9e618aab6568..26f9f8aab949 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -645,6 +645,12 @@ static int init_phys_status_page(struct intel_engine_cs *engine) return 0; } +static void __intel_context_unpin(struct i915_gem_context *ctx, + struct intel_engine_cs *engine) +{ + intel_context_unpin(to_intel_context(ctx, engine)); +} + /** * intel_engines_init_common - initialize cengine state which might require hw access * @engine: Engine to initialize. @@ -658,7 +664,8 @@ static int init_phys_status_page(struct intel_engine_cs *engine) */ int intel_engine_init_common(struct intel_engine_cs *engine) { - struct intel_ring *ring; + struct drm_i915_private *i915 = engine->i915; + struct intel_context *ce; int ret; engine->set_default_submission(engine); @@ -670,18 +677,18 @@ int intel_engine_init_common(struct intel_engine_cs *engine) * be available. To avoid this we always pin the default * context. */ - ring = intel_context_pin(engine->i915->kernel_context, engine); - if (IS_ERR(ring)) - return PTR_ERR(ring); + ce = intel_context_pin(i915->kernel_context, engine); + if (IS_ERR(ce)) + return PTR_ERR(ce); /* * Similarly the preempt context must always be available so that * we can interrupt the engine at any time. */ - if (engine->i915->preempt_context) { - ring = intel_context_pin(engine->i915->preempt_context, engine); - if (IS_ERR(ring)) { - ret = PTR_ERR(ring); + if (i915->preempt_context) { + ce = intel_context_pin(i915->preempt_context, engine); + if (IS_ERR(ce)) { + ret = PTR_ERR(ce); goto err_unpin_kernel; } } @@ -690,7 +697,7 @@ int intel_engine_init_common(struct intel_engine_cs *engine) if (ret) goto err_unpin_preempt; - if (HWS_NEEDS_PHYSICAL(engine->i915)) + if (HWS_NEEDS_PHYSICAL(i915)) ret = init_phys_status_page(engine); else ret = init_status_page(engine); @@ -702,10 +709,11 @@ int intel_engine_init_common(struct intel_engine_cs *engine) err_breadcrumbs: intel_engine_fini_breadcrumbs(engine); err_unpin_preempt: - if (engine->i915->preempt_context) - intel_context_unpin(engine->i915->preempt_context, engine); + if (i915->preempt_context) + __intel_context_unpin(i915->preempt_context, engine); + err_unpin_kernel: - intel_context_unpin(engine->i915->kernel_context, engine); + __intel_context_unpin(i915->kernel_context, engine); return ret; } @@ -718,6 +726,8 @@ int intel_engine_init_common(struct intel_engine_cs *engine) */ void intel_engine_cleanup_common(struct intel_engine_cs *engine) { + struct drm_i915_private *i915 = engine->i915; + intel_engine_cleanup_scratch(engine); if (HWS_NEEDS_PHYSICAL(engine->i915)) @@ -732,9 +742,9 @@ void intel_engine_cleanup_common(struct intel_engine_cs *engine) if (engine->default_state) i915_gem_object_put(engine->default_state); - if (engine->i915->preempt_context) - intel_context_unpin(engine->i915->preempt_context, engine); - intel_context_unpin(engine->i915->kernel_context, engine); + if (i915->preempt_context) + __intel_context_unpin(i915->preempt_context, engine); + __intel_context_unpin(i915->kernel_context, engine); i915_timeline_fini(&engine->timeline); } @@ -1007,8 +1017,8 @@ bool intel_engines_are_idle(struct drm_i915_private *dev_priv) */ bool intel_engine_has_kernel_context(const struct intel_engine_cs *engine) { - const struct i915_gem_context * const kernel_context = - engine->i915->kernel_context; + const struct intel_context *kernel_context = + to_intel_context(engine->i915->kernel_context, engine); struct i915_request *rq; lockdep_assert_held(&engine->i915->drm.struct_mutex); @@ -1020,7 +1030,7 @@ bool intel_engine_has_kernel_context(const struct intel_engine_cs *engine) */ rq = __i915_gem_active_peek(&engine->timeline.last_request); if (rq) - return rq->gem_context == kernel_context; + return rq->hw_context == kernel_context; else return engine->last_retired_context == kernel_context; } @@ -1107,16 +1117,16 @@ void intel_engines_unpark(struct drm_i915_private *i915) */ void intel_engine_lost_context(struct intel_engine_cs *engine) { - struct i915_gem_context *ctx; + struct intel_context *ce; lockdep_assert_held(&engine->i915->drm.struct_mutex); engine->legacy_active_context = NULL; engine->legacy_active_ppgtt = NULL; - ctx = fetch_and_zero(&engine->last_retired_context); - if (ctx) - intel_context_unpin(ctx, engine); + ce = fetch_and_zero(&engine->last_retired_context); + if (ce) + intel_context_unpin(ce); } bool intel_engine_can_store_dword(struct intel_engine_cs *engine) diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index a432a193f3c4..133367a17863 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -513,9 +513,7 @@ static void guc_add_request(struct intel_guc *guc, struct i915_request *rq) { struct intel_guc_client *client = guc->execbuf_client; struct intel_engine_cs *engine = rq->engine; - u32 ctx_desc = - lower_32_bits(intel_lr_context_descriptor(rq->gem_context, - engine)); + u32 ctx_desc = lower_32_bits(rq->hw_context->lrc_desc); u32 ring_tail = intel_ring_set_tail(rq->ring, rq->tail) / sizeof(u64); spin_lock(&client->wq_lock); @@ -553,8 +551,8 @@ static void inject_preempt_context(struct work_struct *work) preempt_work[engine->id]); struct intel_guc_client *client = guc->preempt_client; struct guc_stage_desc *stage_desc = __get_stage_desc(client); - u32 ctx_desc = lower_32_bits(intel_lr_context_descriptor(client->owner, - engine)); + u32 ctx_desc = lower_32_bits(to_intel_context(client->owner, + engine)->lrc_desc); u32 data[7]; /* @@ -726,7 +724,7 @@ static bool __guc_dequeue(struct intel_engine_cs *engine) struct i915_request *rq, *rn; list_for_each_entry_safe(rq, rn, &p->requests, sched.link) { - if (last && rq->gem_context != last->gem_context) { + if (last && rq->hw_context != last->hw_context) { if (port == last_port) { __list_del_many(&p->requests, &rq->sched.link); diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 813f114a7c93..89a3a31721da 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -164,7 +164,8 @@ #define WA_TAIL_BYTES (sizeof(u32) * WA_TAIL_DWORDS) static int execlists_context_deferred_alloc(struct i915_gem_context *ctx, - struct intel_engine_cs *engine); + struct intel_engine_cs *engine, + struct intel_context *ce); static void execlists_init_reg_state(u32 *reg_state, struct i915_gem_context *ctx, struct intel_engine_cs *engine, @@ -189,12 +190,7 @@ static inline bool need_preempt(const struct intel_engine_cs *engine, !i915_request_completed(last)); } -/** - * intel_lr_context_descriptor_update() - calculate & cache the descriptor - * descriptor for a pinned context - * @ctx: Context to work on - * @engine: Engine the descriptor will be used with - * +/* * The context descriptor encodes various attributes of a context, * including its GTT address and some flags. Because it's fairly * expensive to calculate, we'll just do it once and cache the result, @@ -222,9 +218,9 @@ static inline bool need_preempt(const struct intel_engine_cs *engine, */ static void intel_lr_context_descriptor_update(struct i915_gem_context *ctx, - struct intel_engine_cs *engine) + struct intel_engine_cs *engine, + struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); u64 desc; BUILD_BUG_ON(MAX_CONTEXT_HW_ID > (BIT(GEN8_CTX_ID_WIDTH))); @@ -418,8 +414,7 @@ execlists_update_context_pdps(struct i915_hw_ppgtt *ppgtt, u32 *reg_state) static u64 execlists_update_context(struct i915_request *rq) { - struct intel_context *ce = - to_intel_context(rq->gem_context, rq->engine); + struct intel_context *ce = rq->hw_context; struct i915_hw_ppgtt *ppgtt = rq->gem_context->ppgtt ?: rq->i915->mm.aliasing_ppgtt; u32 *reg_state = ce->lrc_reg_state; @@ -496,14 +491,14 @@ static void execlists_submit_ports(struct intel_engine_cs *engine) execlists_clear_active(execlists, EXECLISTS_ACTIVE_HWACK); } -static bool ctx_single_port_submission(const struct i915_gem_context *ctx) +static bool ctx_single_port_submission(const struct intel_context *ce) { return (IS_ENABLED(CONFIG_DRM_I915_GVT) && - i915_gem_context_force_single_submission(ctx)); + i915_gem_context_force_single_submission(ce->gem_context)); } -static bool can_merge_ctx(const struct i915_gem_context *prev, - const struct i915_gem_context *next) +static bool can_merge_ctx(const struct intel_context *prev, + const struct intel_context *next) { if (prev != next) return false; @@ -680,8 +675,8 @@ static bool __execlists_dequeue(struct intel_engine_cs *engine) * second request, and so we never need to tell the * hardware about the first. */ - if (last && !can_merge_ctx(rq->gem_context, - last->gem_context)) { + if (last && + !can_merge_ctx(rq->hw_context, last->hw_context)) { /* * If we are on the second port and cannot * combine this request with the last, then we @@ -700,14 +695,14 @@ static bool __execlists_dequeue(struct intel_engine_cs *engine) * the same context (even though a different * request) to the second port. */ - if (ctx_single_port_submission(last->gem_context) || - ctx_single_port_submission(rq->gem_context)) { + if (ctx_single_port_submission(last->hw_context) || + ctx_single_port_submission(rq->hw_context)) { __list_del_many(&p->requests, &rq->sched.link); goto done; } - GEM_BUG_ON(last->gem_context == rq->gem_context); + GEM_BUG_ON(last->hw_context == rq->hw_context); if (submit) port_assign(port, last); @@ -1338,6 +1333,37 @@ static void execlists_schedule(struct i915_request *request, spin_unlock_irq(&engine->timeline.lock); } +static void execlists_context_destroy(struct intel_context *ce) +{ + GEM_BUG_ON(!ce->state); + GEM_BUG_ON(ce->pin_count); + + intel_ring_free(ce->ring); + __i915_gem_object_release_unless_active(ce->state->obj); +} + +static void __execlists_context_unpin(struct intel_context *ce) +{ + intel_ring_unpin(ce->ring); + + ce->state->obj->pin_global--; + i915_gem_object_unpin_map(ce->state->obj); + i915_vma_unpin(ce->state); + + i915_gem_context_put(ce->gem_context); +} + +static void execlists_context_unpin(struct intel_context *ce) +{ + lockdep_assert_held(&ce->gem_context->i915->drm.struct_mutex); + GEM_BUG_ON(ce->pin_count == 0); + + if (--ce->pin_count) + return; + + __execlists_context_unpin(ce); +} + static int __context_pin(struct i915_gem_context *ctx, struct i915_vma *vma) { unsigned int flags; @@ -1361,21 +1387,15 @@ static int __context_pin(struct i915_gem_context *ctx, struct i915_vma *vma) return i915_vma_pin(vma, 0, GEN8_LR_CONTEXT_ALIGN, flags); } -static struct intel_ring * -execlists_context_pin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static struct intel_context * +__execlists_context_pin(struct intel_engine_cs *engine, + struct i915_gem_context *ctx, + struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); void *vaddr; int ret; - lockdep_assert_held(&ctx->i915->drm.struct_mutex); - - if (likely(ce->pin_count++)) - goto out; - GEM_BUG_ON(!ce->pin_count); /* no overflow please! */ - - ret = execlists_context_deferred_alloc(ctx, engine); + ret = execlists_context_deferred_alloc(ctx, engine, ce); if (ret) goto err; GEM_BUG_ON(!ce->state); @@ -1394,7 +1414,7 @@ execlists_context_pin(struct intel_engine_cs *engine, if (ret) goto unpin_map; - intel_lr_context_descriptor_update(ctx, engine); + intel_lr_context_descriptor_update(ctx, engine, ce); ce->lrc_reg_state = vaddr + LRC_STATE_PN * PAGE_SIZE; ce->lrc_reg_state[CTX_RING_BUFFER_START+1] = @@ -1403,8 +1423,7 @@ execlists_context_pin(struct intel_engine_cs *engine, ce->state->obj->pin_global++; i915_gem_context_get(ctx); -out: - return ce->ring; + return ce; unpin_map: i915_gem_object_unpin_map(ce->state->obj); @@ -1415,33 +1434,33 @@ execlists_context_pin(struct intel_engine_cs *engine, return ERR_PTR(ret); } -static void execlists_context_unpin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static const struct intel_context_ops execlists_context_ops = { + .unpin = execlists_context_unpin, + .destroy = execlists_context_destroy, +}; + +static struct intel_context * +execlists_context_pin(struct intel_engine_cs *engine, + struct i915_gem_context *ctx) { struct intel_context *ce = to_intel_context(ctx, engine); lockdep_assert_held(&ctx->i915->drm.struct_mutex); - GEM_BUG_ON(ce->pin_count == 0); - if (--ce->pin_count) - return; - - intel_ring_unpin(ce->ring); + if (likely(ce->pin_count++)) + return ce; + GEM_BUG_ON(!ce->pin_count); /* no overflow please! */ - ce->state->obj->pin_global--; - i915_gem_object_unpin_map(ce->state->obj); - i915_vma_unpin(ce->state); + ce->ops = &execlists_context_ops; - i915_gem_context_put(ctx); + return __execlists_context_pin(engine, ctx, ce); } static int execlists_request_alloc(struct i915_request *request) { - struct intel_context *ce = - to_intel_context(request->gem_context, request->engine); int ret; - GEM_BUG_ON(!ce->pin_count); + GEM_BUG_ON(!request->hw_context->pin_count); /* Flush enough space to reduce the likelihood of waiting after * we start building the request - in which case we will just @@ -1955,7 +1974,7 @@ static void execlists_reset(struct intel_engine_cs *engine, * future request will be after userspace has had the opportunity * to recreate its own state. */ - regs = to_intel_context(request->gem_context, engine)->lrc_reg_state; + regs = request->hw_context->lrc_reg_state; if (engine->default_state) { void *defaults; @@ -2326,8 +2345,6 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine) engine->reset.finish = execlists_reset_finish; engine->context_pin = execlists_context_pin; - engine->context_unpin = execlists_context_unpin; - engine->request_alloc = execlists_request_alloc; engine->emit_flush = gen8_emit_flush; @@ -2562,7 +2579,7 @@ static void execlists_init_reg_state(u32 *regs, struct drm_i915_private *dev_priv = engine->i915; struct i915_hw_ppgtt *ppgtt = ctx->ppgtt ?: dev_priv->mm.aliasing_ppgtt; u32 base = engine->mmio_base; - bool rcs = engine->id == RCS; + bool rcs = engine->class == RENDER_CLASS; /* A context is actually a big batch buffer with several * MI_LOAD_REGISTER_IMM commands followed by (reg, value) pairs. The @@ -2709,10 +2726,10 @@ populate_lr_context(struct i915_gem_context *ctx, } static int execlists_context_deferred_alloc(struct i915_gem_context *ctx, - struct intel_engine_cs *engine) + struct intel_engine_cs *engine, + struct intel_context *ce) { struct drm_i915_gem_object *ctx_obj; - struct intel_context *ce = to_intel_context(ctx, engine); struct i915_vma *vma; uint32_t context_size; struct intel_ring *ring; diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index 4ec7d8dd13c8..1593194e930c 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -104,11 +104,4 @@ struct i915_gem_context; void intel_lr_context_resume(struct drm_i915_private *dev_priv); -static inline uint64_t -intel_lr_context_descriptor(struct i915_gem_context *ctx, - struct intel_engine_cs *engine) -{ - return to_intel_context(ctx, engine)->lrc_desc; -} - #endif /* _INTEL_LRC_H_ */ diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 53703012ec75..0c0c9f531e4e 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -571,8 +571,7 @@ static void reset_ring(struct intel_engine_cs *engine, */ if (request) { struct drm_i915_private *dev_priv = request->i915; - struct intel_context *ce = - to_intel_context(request->gem_context, engine); + struct intel_context *ce = request->hw_context; struct i915_hw_ppgtt *ppgtt; if (ce->state) { @@ -1186,7 +1185,31 @@ intel_ring_free(struct intel_ring *ring) kfree(ring); } -static int context_pin(struct intel_context *ce) +static void intel_ring_context_destroy(struct intel_context *ce) +{ + GEM_BUG_ON(ce->pin_count); + + if (ce->state) + __i915_gem_object_release_unless_active(ce->state->obj); +} + +static void intel_ring_context_unpin(struct intel_context *ce) +{ + lockdep_assert_held(&ce->gem_context->i915->drm.struct_mutex); + GEM_BUG_ON(ce->pin_count == 0); + + if (--ce->pin_count) + return; + + if (ce->state) { + ce->state->obj->pin_global--; + i915_vma_unpin(ce->state); + } + + i915_gem_context_put(ce->gem_context); +} + +static int __context_pin(struct intel_context *ce) { struct i915_vma *vma = ce->state; int ret; @@ -1275,25 +1298,19 @@ alloc_context_vma(struct intel_engine_cs *engine) return ERR_PTR(err); } -static struct intel_ring * -intel_ring_context_pin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static struct intel_context * +__ring_context_pin(struct intel_engine_cs *engine, + struct i915_gem_context *ctx, + struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); - int ret; - - lockdep_assert_held(&ctx->i915->drm.struct_mutex); - - if (likely(ce->pin_count++)) - goto out; - GEM_BUG_ON(!ce->pin_count); /* no overflow please! */ + int err; if (!ce->state && engine->context_size) { struct i915_vma *vma; vma = alloc_context_vma(engine); if (IS_ERR(vma)) { - ret = PTR_ERR(vma); + err = PTR_ERR(vma); goto err; } @@ -1301,8 +1318,8 @@ intel_ring_context_pin(struct intel_engine_cs *engine, } if (ce->state) { - ret = context_pin(ce); - if (ret) + err = __context_pin(ce); + if (err) goto err; ce->state->obj->pin_global++; @@ -1310,32 +1327,37 @@ intel_ring_context_pin(struct intel_engine_cs *engine, i915_gem_context_get(ctx); -out: /* One ringbuffer to rule them all */ - return engine->buffer; + GEM_BUG_ON(!engine->buffer); + ce->ring = engine->buffer; + + return ce; err: ce->pin_count = 0; - return ERR_PTR(ret); + return ERR_PTR(err); } -static void intel_ring_context_unpin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static const struct intel_context_ops ring_context_ops = { + .unpin = intel_ring_context_unpin, + .destroy = intel_ring_context_destroy, +}; + +static struct intel_context * +intel_ring_context_pin(struct intel_engine_cs *engine, + struct i915_gem_context *ctx) { struct intel_context *ce = to_intel_context(ctx, engine); lockdep_assert_held(&ctx->i915->drm.struct_mutex); - GEM_BUG_ON(ce->pin_count == 0); - if (--ce->pin_count) - return; + if (likely(ce->pin_count++)) + return ce; + GEM_BUG_ON(!ce->pin_count); /* no overflow please! */ - if (ce->state) { - ce->state->obj->pin_global--; - i915_vma_unpin(ce->state); - } + ce->ops = &ring_context_ops; - i915_gem_context_put(ctx); + return __ring_context_pin(engine, ctx, ce); } static int intel_init_ring_buffer(struct intel_engine_cs *engine) @@ -1346,10 +1368,6 @@ static int intel_init_ring_buffer(struct intel_engine_cs *engine) intel_engine_setup_common(engine); - err = intel_engine_init_common(engine); - if (err) - goto err; - timeline = i915_timeline_create(engine->i915, engine->name); if (IS_ERR(timeline)) { err = PTR_ERR(timeline); @@ -1371,8 +1389,14 @@ static int intel_init_ring_buffer(struct intel_engine_cs *engine) GEM_BUG_ON(engine->buffer); engine->buffer = ring; + err = intel_engine_init_common(engine); + if (err) + goto err_unpin; + return 0; +err_unpin: + intel_ring_unpin(ring); err_ring: intel_ring_free(ring); err: @@ -1458,7 +1482,7 @@ static inline int mi_set_context(struct i915_request *rq, u32 flags) *cs++ = MI_NOOP; *cs++ = MI_SET_CONTEXT; - *cs++ = i915_ggtt_offset(to_intel_context(rq->gem_context, engine)->state) | flags; + *cs++ = i915_ggtt_offset(rq->hw_context->state) | flags; /* * w/a: MI_SET_CONTEXT must always be followed by MI_NOOP * WaMiSetContext_Hang:snb,ivb,vlv @@ -1549,7 +1573,7 @@ static int switch_context(struct i915_request *rq) hw_flags = MI_FORCE_RESTORE; } - if (to_intel_context(to_ctx, engine)->state && + if (rq->hw_context->state && (to_ctx != from_ctx || hw_flags & MI_FORCE_RESTORE)) { GEM_BUG_ON(engine->id != RCS); @@ -1597,7 +1621,7 @@ static int ring_request_alloc(struct i915_request *request) { int ret; - GEM_BUG_ON(!to_intel_context(request->gem_context, request->engine)->pin_count); + GEM_BUG_ON(!request->hw_context->pin_count); /* Flush enough space to reduce the likelihood of waiting after * we start building the request - in which case we will just @@ -2028,8 +2052,6 @@ static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv, engine->reset.finish = reset_finish; engine->context_pin = intel_ring_context_pin; - engine->context_unpin = intel_ring_context_unpin; - engine->request_alloc = ring_request_alloc; engine->emit_breadcrumb = i9xx_emit_breadcrumb; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 2b16185e36c4..20c4e13efc0d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -436,10 +436,9 @@ struct intel_engine_cs { void (*set_default_submission)(struct intel_engine_cs *engine); - struct intel_ring *(*context_pin)(struct intel_engine_cs *engine, - struct i915_gem_context *ctx); - void (*context_unpin)(struct intel_engine_cs *engine, - struct i915_gem_context *ctx); + struct intel_context *(*context_pin)(struct intel_engine_cs *engine, + struct i915_gem_context *ctx); + int (*request_alloc)(struct i915_request *rq); int (*init_context)(struct i915_request *rq); @@ -555,7 +554,7 @@ struct intel_engine_cs { * to the kernel context and trash it as the save may not happen * before the hardware is powered down. */ - struct i915_gem_context *last_retired_context; + struct intel_context *last_retired_context; /* We track the current MI_SET_CONTEXT in order to eliminate * redudant context switches. This presumes that requests are not diff --git a/drivers/gpu/drm/i915/selftests/mock_context.c b/drivers/gpu/drm/i915/selftests/mock_context.c index 501becc47c0c..8904f1ce64e3 100644 --- a/drivers/gpu/drm/i915/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/selftests/mock_context.c @@ -30,6 +30,7 @@ mock_context(struct drm_i915_private *i915, const char *name) { struct i915_gem_context *ctx; + unsigned int n; int ret; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); @@ -43,6 +44,12 @@ mock_context(struct drm_i915_private *i915, INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); INIT_LIST_HEAD(&ctx->handles_list); + for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) { + struct intel_context *ce = &ctx->__engine[n]; + + ce->gem_context = ctx; + } + ret = ida_simple_get(&i915->contexts.hw_ida, 0, MAX_CONTEXT_HW_ID, GFP_KERNEL); if (ret < 0) diff --git a/drivers/gpu/drm/i915/selftests/mock_engine.c b/drivers/gpu/drm/i915/selftests/mock_engine.c index 26bf29d97007..33eddfc1f8ce 100644 --- a/drivers/gpu/drm/i915/selftests/mock_engine.c +++ b/drivers/gpu/drm/i915/selftests/mock_engine.c @@ -72,25 +72,37 @@ static void hw_delay_complete(struct timer_list *t) spin_unlock(&engine->hw_lock); } -static struct intel_ring * -mock_context_pin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static void mock_context_unpin(struct intel_context *ce) { - struct intel_context *ce = to_intel_context(ctx, engine); + if (--ce->pin_count) + return; - if (!ce->pin_count++) - i915_gem_context_get(ctx); + i915_gem_context_put(ce->gem_context); +} - return engine->buffer; +static void mock_context_destroy(struct intel_context *ce) +{ + GEM_BUG_ON(ce->pin_count); } -static void mock_context_unpin(struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +static const struct intel_context_ops mock_context_ops = { + .unpin = mock_context_unpin, + .destroy = mock_context_destroy, +}; + +static struct intel_context * +mock_context_pin(struct intel_engine_cs *engine, + struct i915_gem_context *ctx) { struct intel_context *ce = to_intel_context(ctx, engine); - if (!--ce->pin_count) - i915_gem_context_put(ctx); + if (!ce->pin_count++) { + i915_gem_context_get(ctx); + ce->ring = engine->buffer; + ce->ops = &mock_context_ops; + } + + return ce; } static int mock_request_alloc(struct i915_request *request) @@ -185,7 +197,6 @@ struct intel_engine_cs *mock_engine(struct drm_i915_private *i915, engine->base.status_page.page_addr = (void *)(engine + 1); engine->base.context_pin = mock_context_pin; - engine->base.context_unpin = mock_context_unpin; engine->base.request_alloc = mock_request_alloc; engine->base.emit_flush = mock_emit_flush; engine->base.emit_breadcrumb = mock_emit_breadcrumb; @@ -238,11 +249,13 @@ void mock_engine_free(struct intel_engine_cs *engine) { struct mock_engine *mock = container_of(engine, typeof(*mock), base); + struct intel_context *ce; GEM_BUG_ON(timer_pending(&mock->hw_delay)); - if (engine->last_retired_context) - intel_context_unpin(engine->last_retired_context, engine); + ce = fetch_and_zero(&engine->last_retired_context); + if (ce) + intel_context_unpin(ce); mock_ring_free(engine->buffer);