From patchwork Sat Jul 25 19:00:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manna, Animesh" X-Patchwork-Id: 6865451 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 57BAAC05AC for ; Sat, 25 Jul 2015 19:01:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6430B20615 for ; Sat, 25 Jul 2015 19:01:10 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 7D0F920611 for ; Sat, 25 Jul 2015 19:01:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E03306E536; Sat, 25 Jul 2015 12:01:08 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id AF29F6E532 for ; Sat, 25 Jul 2015 12:01:07 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 25 Jul 2015 12:01:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,543,1432623600"; d="scan'208";a="735456389" Received: from amanna-desktop.iind.intel.com ([10.223.25.39]) by orsmga001.jf.intel.com with ESMTP; 25 Jul 2015 12:01:05 -0700 From: Animesh Manna To: intel-gfx@lists.freedesktop.org Date: Sun, 26 Jul 2015 00:30:34 +0530 Message-Id: <1437850839-16782-14-git-send-email-animesh.manna@intel.com> X-Mailer: git-send-email 2.0.2 In-Reply-To: <1437850839-16782-1-git-send-email-animesh.manna@intel.com> References: <1437850839-16782-1-git-send-email-animesh.manna@intel.com> Cc: Daniel Vetter Subject: [Intel-gfx] [PATCH 13/18] drm/i915: Use request_firmware and our own async work X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Daniel Vetter Two benefits: - We can use FW_LOADER_USERSPACE_FALLBACK. - We can use flush_work to synchronize with the oustanding worker, which is a notch more obvious what it does than having a special completion. The next patch will properly synchronize against the async loader in the resume and unload code. Cc: Damien Lespiau Cc: Imre Deak Cc: Sunil Kamath Signed-off-by: Daniel Vetter Signed-off-by: Animesh Manna --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_csr.c | 22 +++++++++++----------- 2 files changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1117300..b45f6b4 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -735,6 +735,7 @@ struct intel_uncore { for_each_fw_domain_mask(domain__, FORCEWAKE_ALL, dev_priv__, i__) struct intel_csr { + struct work_struct work; const char *fw_path; uint32_t *dmc_payload; uint32_t dmc_fw_size; diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c index f42449b..36386324 100644 --- a/drivers/gpu/drm/i915/intel_csr.c +++ b/drivers/gpu/drm/i915/intel_csr.c @@ -341,10 +341,16 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv, return dmc_payload; } -static void finish_csr_load(const struct firmware *fw, void *context) +static void csr_load_work_fn(struct work_struct *work) { - struct drm_i915_private *dev_priv = context; + struct drm_i915_private *dev_priv; + const struct firmware *fw; + int ret; + + dev_priv = container_of(work, typeof(*dev_priv), csr.work); + ret = request_firmware(&fw, dev_priv->csr.fw_path, + &dev_priv->dev->pdev->dev); if (!fw) goto out; @@ -380,7 +386,8 @@ out: void intel_csr_ucode_init(struct drm_i915_private *dev_priv) { struct intel_csr *csr = &dev_priv->csr; - int ret; + + INIT_WORK(&dev_priv->csr.work, csr_load_work_fn); if (!HAS_CSR(dev_priv)) return; @@ -390,19 +397,12 @@ void intel_csr_ucode_init(struct drm_i915_private *dev_priv) else if (IS_BROXTON(dev_priv)) csr->fw_path = I915_CSR_BXT; - DRM_DEBUG_KMS("Loading %s\n", csr->fw_path); - /* * Obtain a runtime pm reference, until CSR is loaded, * to avoid entering runtime-suspend. */ intel_runtime_pm_get(dev_priv); - - /* CSR supported for platform, load firmware */ - ret = request_firmware_nowait(THIS_MODULE, true, csr->fw_path, - &dev_priv->dev->pdev->dev, - GFP_KERNEL, dev_priv, - finish_csr_load); + schedule_work(&dev_priv->csr.work); } /**