From patchwork Thu May 17 16:56:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10407217 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 CA40360353 for ; Thu, 17 May 2018 16:56:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B70AC285F3 for ; Thu, 17 May 2018 16:56:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B57E528628; Thu, 17 May 2018 16:56:54 +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 2524D2860C for ; Thu, 17 May 2018 16:56:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4DB126EAE2; Thu, 17 May 2018 16:56:53 +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 027B06EAE0 for ; Thu, 17 May 2018 16:56:51 +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 11740397-1500050 for multiple; Thu, 17 May 2018 17:56:44 +0100 Received: by haswell.alporthouse.com (sSMTP sendmail emulation); Thu, 17 May 2018 17:56:43 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Thu, 17 May 2018 17:56:41 +0100 Message-Id: <20180517165642.1416-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.17.0 MIME-Version: 1.0 X-Originating-IP: 78.156.65.138 X-Country: code=GB country="United Kingdom" ip=78.156.65.138 Subject: [Intel-gfx] [PATCH 1/2] drm/i915/guc: Keep guc submission permanently engaged 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP We make a decision at module load whether to use the GuC backend or not, but lose that setup across set-wedge. Currently, the guc doesn't override the engine->set_default_submission hook letting execlists sneak back in temporarily on unwedging leading to an unbalanced park/unpark. Testcase: igt/gem_eio Signed-off-by: Chris Wilson Cc: Michał Winiarski Cc: Michal Wajdeczko --- drivers/gpu/drm/i915/intel_guc_submission.c | 34 +++++++++++++++------ drivers/gpu/drm/i915/intel_lrc.c | 2 +- drivers/gpu/drm/i915/intel_lrc.h | 2 ++ 3 files changed, 28 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index 637e852888ec..cbd8caffd271 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -1264,6 +1264,29 @@ static void guc_submission_unpark(struct intel_engine_cs *engine) intel_engine_pin_breadcrumbs_irq(engine); } +static void guc_set_default_submission(struct intel_engine_cs *engine) +{ + /* + * We inherit a bunch of functions from execlists that we'd like + * to keep using: + * + * engine->submit_request = execlists_submit_request; + * engine->cancel_requests = execlists_cancel_requests; + * engine->schedule = execlists_schedule; + * + * But we need to override the actual submission backend in order + * to talk to the GuC. + */ + execlists_set_default_submission(engine); + + engine->execlists.tasklet.func = guc_submission_tasklet; + + engine->park = guc_submission_park; + engine->unpark = guc_submission_unpark; + + engine->flags &= ~I915_ENGINE_SUPPORTS_STATS; +} + int intel_guc_submission_enable(struct intel_guc *guc) { struct drm_i915_private *dev_priv = guc_to_i915(guc); @@ -1302,17 +1325,10 @@ int intel_guc_submission_enable(struct intel_guc *guc) guc_interrupts_capture(dev_priv); for_each_engine(engine, dev_priv, id) { - struct intel_engine_execlists * const execlists = - &engine->execlists; - - execlists->tasklet.func = guc_submission_tasklet; - engine->reset.prepare = guc_reset_prepare; + engine->set_default_submission = guc_set_default_submission; - engine->park = guc_submission_park; - engine->unpark = guc_submission_unpark; - - engine->flags &= ~I915_ENGINE_SUPPORTS_STATS; + engine->set_default_submission(engine); } return 0; diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 646ecf267411..853fb0b5f73e 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -2291,7 +2291,7 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine) kfree(engine); } -static void execlists_set_default_submission(struct intel_engine_cs *engine) +void execlists_set_default_submission(struct intel_engine_cs *engine) { engine->submit_request = execlists_submit_request; engine->cancel_requests = execlists_cancel_requests; diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index 4ec7d8dd13c8..e64f47e612f4 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -111,4 +111,6 @@ intel_lr_context_descriptor(struct i915_gem_context *ctx, return to_intel_context(ctx, engine)->lrc_desc; } +void execlists_set_default_submission(struct intel_engine_cs *engine); + #endif /* _INTEL_LRC_H_ */