From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 BF3F0C64E75 for ; Fri, 27 Nov 2020 12:13:28 +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 74242208D5 for ; Fri, 27 Nov 2020 12:13:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 74242208D5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E08236ED00; Fri, 27 Nov 2020 12:11:28 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1B1946ECFD; Fri, 27 Nov 2020 12:11:25 +0000 (UTC) IronPort-SDR: 9FluPpVEascufLW9bI9UjrMbKJOi/qWPFia32eBJY9EfakI260oeTkCpXr8x2u2wpo8XZjNXpC IA+jfzvW5KGQ== X-IronPort-AV: E=McAfee;i="6000,8403,9817"; a="257092893" X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="257092893" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:11:24 -0800 IronPort-SDR: nnvKQC/KOYK51wtLnpR4ppQVv4pk58ylERSjtPdoNHhcyfISnx664eMD4n1reWNQzHjYJ9HDEo MkSz5z/tDY0w== X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="548029773" Received: from mjgleeso-mobl.ger.corp.intel.com (HELO mwauld-desk1.ger.corp.intel.com) ([10.251.85.2]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:11:22 -0800 From: Matthew Auld To: intel-gfx@lists.freedesktop.org Subject: [RFC PATCH 121/162] drm/i915: WA for zero memory channel Date: Fri, 27 Nov 2020 12:06:37 +0000 Message-Id: <20201127120718.454037-122-matthew.auld@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201127120718.454037-1-matthew.auld@intel.com> References: <20201127120718.454037-1-matthew.auld@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lucas De Marchi , dri-devel@lists.freedesktop.org, Stanislav Lisovskiy , Daniele Ceraolo Spurio , Rodrigo Vivi Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" RnJvbTogRGFuaWVsZSBDZXJhb2xvIFNwdXJpbyA8ZGFuaWVsZS5jZXJhb2xvc3B1cmlvQGludGVs LmNvbT4KCkNvbW1pdCBjNDU3ZDljZjI1NmUgKCJkcm0vaTkxNTogTWFrZSBzdXJlIHdlIGhhdmUg ZW5vdWdoIG1lbW9yeQpiYW5kd2lkdGggb24gSUNMIikgYXNzdW1lcyB0aGF0IHdlIGFsd2F5cyBo YXZlIGEgbm9uLXplcm8KZHJhbV9pbmZvLT5jaGFubmVscyBhbmQgdXNlcyBpdCBhcyBhIGRpdmlz b3IuIFdlIG5lZWQgbnVtIG1lbW9yeQpjaGFubmVscyB0byBiZSBhdCBsZWFzdCAxIGZvciBzYW5l IGJ3IGxpbWl0cyBjaGVja2luZywgZXZlbiB3aGVuIFBDb2RlCnJldHVybnMgMCwgc28gbGV0cyBm b3JjZSBpdCB0byAxIGluIHRoaXMgY2FzZS4KCkNjOiBTdGFuaXNsYXYgTGlzb3Zza2l5IDxzdGFu aXNsYXYubGlzb3Zza2l5QGludGVsLmNvbT4KQ2M6IFJvZHJpZ28gVml2aSA8cm9kcmlnby52aXZp QGludGVsLmNvbT4KQ2M6IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRl bC5jb20+ClNpZ25lZC1vZmYtYnk6IERhbmllbGUgQ2VyYW9sbyBTcHVyaW8gPGRhbmllbGUuY2Vy YW9sb3NwdXJpb0BpbnRlbC5jb20+ClNpZ25lZC1vZmYtYnk6IEx1Y2FzIERlIE1hcmNoaSA8bHVj YXMuZGVtYXJjaGlAaW50ZWwuY29tPgotLS0KIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkv aW50ZWxfYncuYyB8IDIgKy0KIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMSBkZWxl dGlvbigtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkvaW50ZWxf YncuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkvaW50ZWxfYncuYwppbmRleCBiZDA2 MDQwNGQyNDkuLjllNzk3MWNlMjRiMyAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv ZGlzcGxheS9pbnRlbF9idy5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkvaW50 ZWxfYncuYwpAQCAtMjIyLDcgKzIyMiw3IEBAIHN0YXRpYyBpbnQgaWNsX2dldF9id19pbmZvKHN0 cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgY29uc3Qgc3RydWN0IGludGVsCiAJCQkg ICAgIkZhaWxlZCB0byBnZXQgbWVtb3J5IHN1YnN5c3RlbSBpbmZvcm1hdGlvbiwgaWdub3Jpbmcg YmFuZHdpZHRoIGxpbWl0cyIpOwogCQlyZXR1cm4gcmV0OwogCX0KLQludW1fY2hhbm5lbHMgPSBx aS5udW1fY2hhbm5lbHM7CisJbnVtX2NoYW5uZWxzID0gbWF4X3QodTgsIDEsIHFpLm51bV9jaGFu bmVscyk7CiAKIAlkZWludGVybGVhdmUgPSBESVZfUk9VTkRfVVAobnVtX2NoYW5uZWxzLCBpc195 X3RpbGUgPyA0IDogMik7CiAJZGNsa19tYXggPSBpY2xfc2Fndl9tYXhfZGNsaygmcWkpOwotLSAK Mi4yNi4yCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpk cmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0 cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK