From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16B23CCA473 for ; Wed, 6 Jul 2022 11:44:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232825AbiGFLoG (ORCPT ); Wed, 6 Jul 2022 07:44:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232781AbiGFLoD (ORCPT ); Wed, 6 Jul 2022 07:44:03 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6F0D2183 for ; Wed, 6 Jul 2022 04:44:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107842; x=1688643842; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fMJWfltOfFJMxVswzKOrQgNi1Q52cAI5noW02Iljmjk=; b=AO/eKxBDmrNXUu6QchsiGl/4OKVEJK/CvukKXqUTF1ZVBeEGesKJ9xUU QaJOtRpwVDoILzBvKoCEuLAtFp/C+0vYNo6bPC0yPZ4ln6/l0y8WhQ5dX uN2n4oXfKf8gwKpZVjSnjyrkjch1XeztV38Wxsk/rQx9RaznVYqvXEseQ jlF2bJcC0n5Kl5T/XqTvhfH+xcNhOxOHhUd4ZXBCCaDGPDW2dRRlMXzz6 ycr9WMIe+RNf1ZUm/fVr0bIbYOm+vtVE0DL+snNjuZWl6PeRObvROUnLd PR0Wt+nAo8ZcvohnMhfyXob+iGRyHiEJt2BYb8s9W2wP598ZjpcZBCQT3 g==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707433" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707433" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:02 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630092" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:43:59 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 01/14] drm/i915/gsc: skip irq initialization if using polling Date: Wed, 6 Jul 2022 14:43:32 +0300 Message-Id: <20220706114345.1128018-2-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Vitaly Lubart Some platforms require the host to poll on the GSC registers instead of relaying on the interrupts. For those platforms, irq initialization should be skipped Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin Reviewed-by: Daniele Ceraolo Spurio --- drivers/gpu/drm/i915/gt/intel_gsc.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/= intel_gsc.c index 0e494028b81d..e0236ff1d072 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.c +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c @@ -40,6 +40,7 @@ struct gsc_def { const char *name; unsigned long bar; size_t bar_size; + bool use_polling; }; =20 /* gsc resources and definitions (HECI1 and HECI2) */ @@ -117,6 +118,10 @@ static void gsc_init_one(struct drm_i915_private *i915, return; } =20 + /* skip irq initialization */ + if (def->use_polling) + goto add_device; + intf->irq =3D irq_alloc_desc(0); if (intf->irq < 0) { drm_err(&i915->drm, "gsc irq error %d\n", intf->irq); @@ -129,6 +134,7 @@ static void gsc_init_one(struct drm_i915_private *i915, goto fail; } =20 +add_device: adev =3D kzalloc(sizeof(*adev), GFP_KERNEL); if (!adev) goto fail; @@ -182,10 +188,8 @@ static void gsc_irq_handler(struct intel_gt *gt, unsig= ned int intf_id) return; } =20 - if (gt->gsc.intf[intf_id].irq < 0) { - drm_err_ratelimited(>->i915->drm, "GSC irq: irq not set"); + if (gt->gsc.intf[intf_id].irq < 0) return; - } =20 ret =3D generic_handle_irq(gt->gsc.intf[intf_id].irq); if (ret) --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 084EEC433EF for ; Wed, 6 Jul 2022 11:44:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232953AbiGFLoN (ORCPT ); Wed, 6 Jul 2022 07:44:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232828AbiGFLoG (ORCPT ); Wed, 6 Jul 2022 07:44:06 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00A2B27FE2 for ; Wed, 6 Jul 2022 04:44:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107845; x=1688643845; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7trpfv682c9MxdTP7vanTLNmy9tVpMFpAitmjY9UN1A=; b=Xi1aOnqqbRzo3JeXy0q71Q/tjUmTjEFCQikgA/36jKsd9Z3H7V7+gziW 6Sx2rs/JD3FulWnBbOapxiUhOBj1/l5sgphdvSuqW4nlqixDZu08Ez4wG mc3lH2wGlW/fh/N8oJGPfjNTB9ZvFq21FS1mrJxuJKjJI0F/984n6lPRs o/Q7mf+QZAFsm8f0VwNukyUontAni3PvBAGimcNjvlPxNHsx4ntbkunp5 Ttr2q+XX9XDz8b5POfG2nLgd+rIBKFpXW+5n0VuCYMnD6q1Y9KqCOpXgZ Yyy2pG+dSEHJMpPENZWF2VFwMYiVA4uHdhI+8mL5+Os6pY24unJE0ZxNX g==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707445" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707445" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:05 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630112" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:02 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 02/14] drm/i915/gsc: add slow_fw flag to the mei auxiliary device Date: Wed, 6 Jul 2022 14:43:33 +0300 Message-Id: <20220706114345.1128018-3-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add slow_fw flag to the mei auxiliary device info to inform the mei driver about slow underlying firmware. Such firmware will require to use larger operation timeouts. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Reviewed-by: Daniele Ceraolo Spurio --- include/linux/mei_aux.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h index 587f25128848..a29f4064b9c0 100644 --- a/include/linux/mei_aux.h +++ b/include/linux/mei_aux.h @@ -11,6 +11,7 @@ struct mei_aux_device { struct auxiliary_device aux_dev; int irq; struct resource bar; + bool slow_fw; }; =20 #define auxiliary_dev_to_mei_aux_dev(auxiliary_dev) \ --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22101C433EF for ; Wed, 6 Jul 2022 11:44:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233276AbiGFLoq (ORCPT ); Wed, 6 Jul 2022 07:44:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233113AbiGFLob (ORCPT ); Wed, 6 Jul 2022 07:44:31 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21A65286EB for ; Wed, 6 Jul 2022 04:44:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107864; x=1688643864; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hJ7/0NMQ+bhhK7LrA8d3+wDuEzwTVfD+Czxxn93mcY0=; b=VBPRzRGK780qfGXmFUVTctxGxOvTOr02uL9Q51deYLTL19EO2MyzWqeY 1IUdkWs+5cv3vyM/RTcWOr0qiEu248QYTvHxnQ1erOZx04/uAyuSGT30B TmX7HcIrqeHlqr5B+shV3iYF1sRU9FO53jSxj3s1/yIKLFrAZyNSS52Zk 2alc08T7Qv3URtpolvuNDMvZ+sphCy6v/Q+MzN0CDauM5y0+hpcN8Fsrw a4qw53eD6GlY93whQVQNBpHktCeahpm5samOgg9Hn5XYAmqBULYZ/o+KV xgxq8CB1CilxMMyEzjf4IKEPCjOyFQXmdWg/rxuHiHXsVOcLIXx0DLPiA w==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707458" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707458" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:09 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630136" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:05 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 03/14] drm/i915/gsc: add slow_fw flag to the gsc device definition Date: Wed, 6 Jul 2022 14:43:34 +0300 Message-Id: <20220706114345.1128018-4-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add slow_fw flag to the gsc device definition and pass it to mei auxiliary device. Signed-off-by: Alexander Usyskin Reviewed-by: Daniele Ceraolo Spurio --- drivers/gpu/drm/i915/gt/intel_gsc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/= intel_gsc.c index e0236ff1d072..f963c220bbff 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.c +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c @@ -41,6 +41,7 @@ struct gsc_def { unsigned long bar; size_t bar_size; bool use_polling; + bool slow_fw; }; =20 /* gsc resources and definitions (HECI1 and HECI2) */ @@ -145,6 +146,7 @@ static void gsc_init_one(struct drm_i915_private *i915, adev->bar.end =3D adev->bar.start + def->bar_size - 1; adev->bar.flags =3D IORESOURCE_MEM; adev->bar.desc =3D IORES_DESC_NONE; + adev->slow_fw =3D def->slow_fw; =20 aux_dev =3D &adev->aux_dev; aux_dev->name =3D def->name; --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE886C433EF for ; Wed, 6 Jul 2022 11:44:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233150AbiGFLot (ORCPT ); Wed, 6 Jul 2022 07:44:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232950AbiGFLoc (ORCPT ); Wed, 6 Jul 2022 07:44:32 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C471286FB for ; Wed, 6 Jul 2022 04:44:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107865; x=1688643865; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1Y9U1WhJAWoCyuEBJ9cdgbIqAVPEHAMhulLIhS8kamw=; b=iA6U0xV0dwfeFjrcwGKYdFPO9He9icZeN2uG61c5K2iyjOPM6IE7eEBN 0IU066fGjt7h359RIxaBov79Coscxt6Djfb0jjQiNR6euhvQTcFUUpah/ QxGmS401KpQ1KkWzaYvfPkybEV9F409eiL6yLf1Fbww11rBIuWVqtK8rh rZuN1AniIu8wW3+bZwzeQHLddu//lpOj3JvH3n629UdGBQ0a/D8+VKqlb kqkjk3w46//1cNjDZmPnnsDJZoLnYEwp7V8038lPN9LNPugloBlNuhpiG EFeIIPDmeYVV1EVo5nwtgrJhoSPWObFKlfGGfZ/IrzaX58DqS1cQpedlr w==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707466" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707466" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:12 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630147" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:09 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 04/14] drm/i915/gsc: add GSC XeHP SDV platform definition Date: Wed, 6 Jul 2022 14:43:35 +0300 Message-Id: <20220706114345.1128018-5-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Define GSC on XeHP SDV (Intel(R) dGPU without display) XeHP SDV uses the same hardware settings as DG1, but uses polling instead of interrupts and runs the firmware in slow pace due to hardware limitations. Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/gt/intel_gsc.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/= intel_gsc.c index f963c220bbff..bfc307e49bf9 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.c +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c @@ -56,6 +56,19 @@ static const struct gsc_def gsc_def_dg1[] =3D { } }; =20 +static const struct gsc_def gsc_def_xehpsdv[] =3D { + { + /* HECI1 not enabled on the device. */ + }, + { + .name =3D "mei-gscfi", + .bar =3D DG1_GSC_HECI2_BASE, + .bar_size =3D GSC_BAR_LENGTH, + .use_polling =3D true, + .slow_fw =3D true, + } +}; + static const struct gsc_def gsc_def_dg2[] =3D { { .name =3D "mei-gsc", @@ -107,6 +120,8 @@ static void gsc_init_one(struct drm_i915_private *i915, =20 if (IS_DG1(i915)) { def =3D &gsc_def_dg1[intf_id]; + } else if (IS_XEHPSDV(i915)) { + def =3D &gsc_def_xehpsdv[intf_id]; } else if (IS_DG2(i915)) { def =3D &gsc_def_dg2[intf_id]; } else { --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B675C43334 for ; Wed, 6 Jul 2022 11:44:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233312AbiGFLow (ORCPT ); Wed, 6 Jul 2022 07:44:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233149AbiGFLoc (ORCPT ); Wed, 6 Jul 2022 07:44:32 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C9FD286FF for ; Wed, 6 Jul 2022 04:44:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107866; x=1688643866; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nL7Su+EhfLbss5J1s6TUSU2bH7xi/JOXq3TVuFuq1fM=; b=cw2dUxhseIG/JLebsNcdPTD+/PD50YbMhpcONYBjS9qTulefgYB+qSuB O2F/w/Nmqf4Y2OQNvXODDwhuAKQrJOvs0n80YhQ+mcUw4T2DktCGfmn8T FiXsqX0jx7EgDSNVbgaX6I8/R+xvxVb3mNf+QsfXxJtMDS8W21Wpa/KTC FmYW0+i1aGwW+UF5cEocWHXf5WMqMELoSKWD1/gTuJ0PZ5Dg9o5SiF89f YqVeLlDY28S8+RMcclmH8jknlObSlBUa/c1KPiD+7YxsFH2jGPcyoLvRT UrNK/Z2PaXQzTOlPC5EeNT402prlAZ7MqwsonFEn72MwA7Pe0CDF5m6Eg g==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707475" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707475" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:15 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630163" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:12 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, James Ausmus Subject: [PATCH v5 05/14] mei: gsc: use polling instead of interrupts Date: Wed, 6 Jul 2022 14:43:36 +0300 Message-Id: <20220706114345.1128018-6-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tomas Winkler A work-around for a HW issue in XEHPSDV that manifests itself when SW reads a gsc register when gsc is sending an interrupt. The work-around is to disable interrupts and to use polling instead. Cc: James Ausmus Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/gsc-me.c | 48 ++++++++++++++++++++++++++------ drivers/misc/mei/hw-me.c | 58 ++++++++++++++++++++++++++++++++++++--- drivers/misc/mei/hw-me.h | 12 ++++++++ 3 files changed, 105 insertions(+), 13 deletions(-) diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index c8145e9b62b6..2caba3a9ac35 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -13,6 +13,7 @@ #include #include #include +#include =20 #include "mei_dev.h" #include "hw-me.h" @@ -66,13 +67,28 @@ static int mei_gsc_probe(struct auxiliary_device *aux_d= ev, =20 dev_set_drvdata(device, dev); =20 - ret =3D devm_request_threaded_irq(device, hw->irq, - mei_me_irq_quick_handler, - mei_me_irq_thread_handler, - IRQF_ONESHOT, KBUILD_MODNAME, dev); - if (ret) { - dev_err(device, "irq register failed %d\n", ret); - goto err; + /* use polling */ + if (mei_me_hw_use_polling(hw)) { + mei_disable_interrupts(dev); + mei_clear_interrupts(dev); + init_waitqueue_head(&hw->wait_active); + hw->is_active =3D true; /* start in active mode for initialization */ + hw->polling_thread =3D kthread_run(mei_me_polling_thread, dev, + "kmegscirqd/%s", dev_name(device)); + if (IS_ERR(hw->polling_thread)) { + ret =3D PTR_ERR(hw->polling_thread); + dev_err(device, "unable to create kernel thread: %d\n", ret); + goto err; + } + } else { + ret =3D devm_request_threaded_irq(device, hw->irq, + mei_me_irq_quick_handler, + mei_me_irq_thread_handler, + IRQF_ONESHOT, KBUILD_MODNAME, dev); + if (ret) { + dev_err(device, "irq register failed %d\n", ret); + goto err; + } } =20 pm_runtime_get_noresume(device); @@ -98,7 +114,8 @@ static int mei_gsc_probe(struct auxiliary_device *aux_de= v, =20 register_err: mei_stop(dev); - devm_free_irq(device, hw->irq, dev); + if (!mei_me_hw_use_polling(hw)) + devm_free_irq(device, hw->irq, dev); =20 err: dev_err(device, "probe failed: %d\n", ret); @@ -119,12 +136,17 @@ static void mei_gsc_remove(struct auxiliary_device *a= ux_dev) =20 mei_stop(dev); =20 + hw =3D to_me_hw(dev); + if (mei_me_hw_use_polling(hw)) + kthread_stop(hw->polling_thread); + mei_deregister(dev); =20 pm_runtime_disable(&aux_dev->dev); =20 mei_disable_interrupts(dev); - devm_free_irq(&aux_dev->dev, hw->irq, dev); + if (!mei_me_hw_use_polling(hw)) + devm_free_irq(&aux_dev->dev, hw->irq, dev); } =20 static int __maybe_unused mei_gsc_pm_suspend(struct device *device) @@ -185,6 +207,9 @@ static int __maybe_unused mei_gsc_pm_runtime_suspend(s= truct device *device) if (mei_write_is_idle(dev)) { hw =3D to_me_hw(dev); hw->pg_state =3D MEI_PG_ON; + + if (mei_me_hw_use_polling(hw)) + hw->is_active =3D false; ret =3D 0; } else { ret =3D -EAGAIN; @@ -209,6 +234,11 @@ static int __maybe_unused mei_gsc_pm_runtime_resume(st= ruct device *device) hw =3D to_me_hw(dev); hw->pg_state =3D MEI_PG_OFF; =20 + if (mei_me_hw_use_polling(hw)) { + hw->is_active =3D true; + wake_up(&hw->wait_active); + } + mutex_unlock(&dev->device_lock); =20 irq_ret =3D mei_me_irq_thread_handler(1, dev); diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index befa491e3344..46559517a902 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -10,6 +10,7 @@ #include #include #include +#include =20 #include "mei_dev.h" #include "hbm.h" @@ -327,9 +328,12 @@ static void mei_me_intr_clear(struct mei_device *dev) */ static void mei_me_intr_enable(struct mei_device *dev) { - u32 hcsr =3D mei_hcsr_read(dev); + u32 hcsr; + + if (mei_me_hw_use_polling(to_me_hw(dev))) + return; =20 - hcsr |=3D H_CSR_IE_MASK; + hcsr =3D mei_hcsr_read(dev) | H_CSR_IE_MASK; mei_hcsr_set(dev, hcsr); } =20 @@ -354,6 +358,9 @@ static void mei_me_synchronize_irq(struct mei_device *d= ev) { struct mei_me_hw *hw =3D to_me_hw(dev); =20 + if (mei_me_hw_use_polling(hw)) + return; + synchronize_irq(hw->irq); } =20 @@ -380,7 +387,10 @@ static void mei_me_host_set_ready(struct mei_device *d= ev) { u32 hcsr =3D mei_hcsr_read(dev); =20 - hcsr |=3D H_CSR_IE_MASK | H_IG | H_RDY; + if (!mei_me_hw_use_polling(to_me_hw(dev))) + hcsr |=3D H_CSR_IE_MASK; + + hcsr |=3D H_IG | H_RDY; mei_hcsr_set(dev, hcsr); } =20 @@ -1176,7 +1186,7 @@ static int mei_me_hw_reset(struct mei_device *dev, bo= ol intr_enable) =20 hcsr |=3D H_RST | H_IG | H_CSR_IS_MASK; =20 - if (!intr_enable) + if (!intr_enable || mei_me_hw_use_polling(to_me_hw(dev))) hcsr &=3D ~H_CSR_IE_MASK; =20 dev->recvd_hw_ready =3D false; @@ -1331,6 +1341,46 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void = *dev_id) } EXPORT_SYMBOL_GPL(mei_me_irq_thread_handler); =20 +#define MEI_POLLING_TIMEOUT_ACTIVE 100 +#define MEI_POLLING_TIMEOUT_IDLE 500 + +int mei_me_polling_thread(void *_dev) +{ + struct mei_device *dev =3D _dev; + irqreturn_t irq_ret; + long polling_timeout =3D MEI_POLLING_TIMEOUT_ACTIVE; + + dev_dbg(dev->dev, "kernel thread is running\n"); + while (!kthread_should_stop()) { + struct mei_me_hw *hw =3D to_me_hw(dev); + u32 hcsr; + + wait_event_timeout(hw->wait_active, + hw->is_active || kthread_should_stop(), + msecs_to_jiffies(MEI_POLLING_TIMEOUT_IDLE)); + + if (kthread_should_stop()) + break; + + hcsr =3D mei_hcsr_read(dev); + if (me_intr_src(hcsr)) { + polling_timeout =3D MEI_POLLING_TIMEOUT_ACTIVE; + irq_ret =3D mei_me_irq_thread_handler(1, dev); + if (irq_ret !=3D IRQ_HANDLED) + dev_err(dev->dev, "irq_ret %d\n", irq_ret); + } else { + polling_timeout =3D clamp_val(polling_timeout + MEI_POLLING_TIMEOUT_ACT= IVE, + MEI_POLLING_TIMEOUT_ACTIVE, + MEI_POLLING_TIMEOUT_IDLE); + } + + schedule_timeout_interruptible(msecs_to_jiffies(polling_timeout)); + } + + return 0; +} +EXPORT_SYMBOL_GPL(mei_me_polling_thread); + static const struct mei_hw_ops mei_me_hw_ops =3D { =20 .trc_status =3D mei_me_trc_status, diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index a071c645e905..ca09274ac299 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -51,6 +51,8 @@ struct mei_cfg { * @d0i3_supported: di03 support * @hbuf_depth: depth of hardware host/write buffer in slots * @read_fws: read FW status register handler + * @wait_active: the polling thread activity wait queue + * @is_active: the device is active */ struct mei_me_hw { const struct mei_cfg *cfg; @@ -60,10 +62,19 @@ struct mei_me_hw { bool d0i3_supported; u8 hbuf_depth; int (*read_fws)(const struct mei_device *dev, int where, u32 *val); + /* polling */ + struct task_struct *polling_thread; + wait_queue_head_t wait_active; + bool is_active; }; =20 #define to_me_hw(dev) (struct mei_me_hw *)((dev)->hw) =20 +static inline bool mei_me_hw_use_polling(const struct mei_me_hw *hw) +{ + return hw->irq < 0; +} + /** * enum mei_cfg_idx - indices to platform specific configurations. * @@ -127,5 +138,6 @@ int mei_me_pg_exit_sync(struct mei_device *dev); =20 irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id); irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id); +int mei_me_polling_thread(void *_dev); =20 #endif /* _MEI_INTERFACE_H_ */ --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F83EC433EF for ; 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X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707485" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707485" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:18 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630171" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:15 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 06/14] mei: gsc: wait for reset thread on stop Date: Wed, 6 Jul 2022 14:43:37 +0300 Message-Id: <20220706114345.1128018-7-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Wait for reset work to complete before initiating stop reset flow sequence. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler --- drivers/misc/mei/init.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index eb052005ca86..5bb6ba662cc0 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -320,6 +320,8 @@ void mei_stop(struct mei_device *dev) =20 mei_clear_interrupts(dev); mei_synchronize_irq(dev); + /* to catch HW-initiated reset */ + mei_cancel_work(dev); =20 mutex_lock(&dev->device_lock); =20 --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3D7CC433EF for ; Wed, 6 Jul 2022 11:45:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233345AbiGFLo7 (ORCPT ); Wed, 6 Jul 2022 07:44:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233072AbiGFLoe (ORCPT ); Wed, 6 Jul 2022 07:44:34 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB57E2870E for ; Wed, 6 Jul 2022 04:44:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107868; x=1688643868; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=lXgMuR8sPrajA+PKyAeEX+NjbEOER6A/JVw4GpN6+mc=; b=gsoYuEUca3h6tLBzSJ8D1alDwHyfhDNhiJsS38fkJ7+dZ+OCCu8xuMUL 4XszP9uAxNzuEKPAufX268/BwcAvU5prRNZbbkgkuGRKy9lK9PL4oZmAp YT66Oz5aCkv9qfXrXL8SxSRTbWXL5vQr04jBpaot6XAFzi26XAFH90SLK dARFFyuEOkrKYDJuwUZ1e+YRb9E1pgv3wdOBZgG8lVdisZ3jHJME+/t5p +IEYuOnZscB8O/6berlEVPEZxeACCAGIrt7ZRlwO20QoJA7ExR7Fc60U0 MtFPH1ch7GpmBs0r262mbQbX2jjKqvbvbqa71NSBkZr6FY/vQoOWWi6KY w==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707500" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707500" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:21 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630186" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:18 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 07/14] mei: extend timeouts on slow devices. Date: Wed, 6 Jul 2022 14:43:38 +0300 Message-Id: <20220706114345.1128018-8-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Parametrize operational timeouts in order to support slow firmware on some graphic devices. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler --- drivers/misc/mei/bus-fixup.c | 3 +-- drivers/misc/mei/client.c | 14 +++++++------- drivers/misc/mei/gsc-me.c | 2 +- drivers/misc/mei/hbm.c | 12 ++++++------ drivers/misc/mei/hw-me.c | 30 ++++++++++++++++-------------- drivers/misc/mei/hw-me.h | 2 +- drivers/misc/mei/hw-txe.c | 2 +- drivers/misc/mei/hw.h | 5 +++++ drivers/misc/mei/init.c | 19 ++++++++++++++++++- drivers/misc/mei/main.c | 2 +- drivers/misc/mei/mei_dev.h | 16 ++++++++++++++++ drivers/misc/mei/pci-me.c | 2 +- 12 files changed, 74 insertions(+), 35 deletions(-) diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index 59506ba6fc48..24e91a9ea558 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -164,7 +164,6 @@ static int mei_osver(struct mei_cl_device *cldev) sizeof(struct mkhi_fw_ver)) #define MKHI_FWVER_LEN(__num) (sizeof(struct mkhi_msg_hdr) + \ sizeof(struct mkhi_fw_ver_block) * (__num)) -#define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */ static int mei_fwver(struct mei_cl_device *cldev) { char buf[MKHI_FWVER_BUF_LEN]; @@ -187,7 +186,7 @@ static int mei_fwver(struct mei_cl_device *cldev) =20 ret =3D 0; bytes_recv =3D __mei_cl_recv(cldev->cl, buf, sizeof(buf), NULL, 0, - MKHI_RCV_TIMEOUT); + cldev->bus->timeouts.mkhi_recv); if (bytes_recv < 0 || (size_t)bytes_recv < MKHI_FWVER_LEN(1)) { /* * Should be at least one version block, diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 31264ab2eb13..e7a16d9b2241 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -870,7 +870,7 @@ static int mei_cl_send_disconnect(struct mei_cl *cl, st= ruct mei_cl_cb *cb) } =20 list_move_tail(&cb->list, &dev->ctrl_rd_list); - cl->timer_count =3D MEI_CONNECT_TIMEOUT; + cl->timer_count =3D dev->timeouts.connect; mei_schedule_stall_timer(dev); =20 return 0; @@ -945,7 +945,7 @@ static int __mei_cl_disconnect(struct mei_cl *cl) wait_event_timeout(cl->wait, cl->state =3D=3D MEI_FILE_DISCONNECT_REPLY || cl->state =3D=3D MEI_FILE_DISCONNECTED, - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); =20 rets =3D cl->status; @@ -1065,7 +1065,7 @@ static int mei_cl_send_connect(struct mei_cl *cl, str= uct mei_cl_cb *cb) } =20 list_move_tail(&cb->list, &dev->ctrl_rd_list); - cl->timer_count =3D MEI_CONNECT_TIMEOUT; + cl->timer_count =3D dev->timeouts.connect; mei_schedule_stall_timer(dev); return 0; } @@ -1164,7 +1164,7 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_c= lient *me_cl, cl->state =3D=3D MEI_FILE_DISCONNECTED || cl->state =3D=3D MEI_FILE_DISCONNECT_REQUIRED || cl->state =3D=3D MEI_FILE_DISCONNECT_REPLY), - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); =20 if (!mei_cl_is_connected(cl)) { @@ -1562,7 +1562,7 @@ int mei_cl_notify_request(struct mei_cl *cl, cl->notify_en =3D=3D request || cl->status || !mei_cl_is_connected(cl), - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); =20 if (cl->notify_en !=3D request && !cl->status) @@ -2336,7 +2336,7 @@ int mei_cl_dma_alloc_and_map(struct mei_cl *cl, const= struct file *fp, mutex_unlock(&dev->device_lock); wait_event_timeout(cl->wait, cl->dma_mapped || cl->status, - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); =20 if (!cl->dma_mapped && !cl->status) @@ -2415,7 +2415,7 @@ int mei_cl_dma_unmap(struct mei_cl *cl, const struct = file *fp) mutex_unlock(&dev->device_lock); wait_event_timeout(cl->wait, !cl->dma_mapped || cl->status, - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); =20 if (cl->dma_mapped && !cl->status) diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index 2caba3a9ac35..4f6c916282b7 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -48,7 +48,7 @@ static int mei_gsc_probe(struct auxiliary_device *aux_dev, =20 device =3D &aux_dev->dev; =20 - dev =3D mei_me_dev_init(device, cfg); + dev =3D mei_me_dev_init(device, cfg, adev->slow_fw); if (!dev) { ret =3D -ENOMEM; goto err; diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index cf2b8261da14..708765056af2 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -232,7 +232,7 @@ int mei_hbm_start_wait(struct mei_device *dev) mutex_unlock(&dev->device_lock); ret =3D wait_event_timeout(dev->wait_hbm_start, dev->hbm_state !=3D MEI_HBM_STARTING, - mei_secs_to_jiffies(MEI_HBM_TIMEOUT)); + dev->timeouts.hbm); mutex_lock(&dev->device_lock); =20 if (ret =3D=3D 0 && (dev->hbm_state <=3D MEI_HBM_STARTING)) { @@ -275,7 +275,7 @@ int mei_hbm_start_req(struct mei_device *dev) } =20 dev->hbm_state =3D MEI_HBM_STARTING; - dev->init_clients_timer =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->init_clients_timer =3D dev->timeouts.client_init; mei_schedule_stall_timer(dev); return 0; } @@ -316,7 +316,7 @@ static int mei_hbm_dma_setup_req(struct mei_device *dev) } =20 dev->hbm_state =3D MEI_HBM_DR_SETUP; - dev->init_clients_timer =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->init_clients_timer =3D dev->timeouts.client_init; mei_schedule_stall_timer(dev); return 0; } @@ -351,7 +351,7 @@ static int mei_hbm_capabilities_req(struct mei_device *= dev) } =20 dev->hbm_state =3D MEI_HBM_CAP_SETUP; - dev->init_clients_timer =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->init_clients_timer =3D dev->timeouts.client_init; mei_schedule_stall_timer(dev); return 0; } @@ -385,7 +385,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *= dev) return ret; } dev->hbm_state =3D MEI_HBM_ENUM_CLIENTS; - dev->init_clients_timer =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->init_clients_timer =3D dev->timeouts.client_init; mei_schedule_stall_timer(dev); return 0; } @@ -751,7 +751,7 @@ static int mei_hbm_prop_req(struct mei_device *dev, uns= igned long start_idx) return ret; } =20 - dev->init_clients_timer =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->init_clients_timer =3D dev->timeouts.client_init; mei_schedule_stall_timer(dev); =20 return 0; diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 46559517a902..6a8e8f3cea7e 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -445,7 +445,7 @@ static int mei_me_hw_ready_wait(struct mei_device *dev) mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_hw_ready, dev->recvd_hw_ready, - mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT)); + dev->timeouts.hw_ready); mutex_lock(&dev->device_lock); if (!dev->recvd_hw_ready) { dev_err(dev->dev, "wait hw ready failed\n"); @@ -707,7 +707,6 @@ static void mei_me_pg_unset(struct mei_device *dev) static int mei_me_pg_legacy_enter_sync(struct mei_device *dev) { struct mei_me_hw *hw =3D to_me_hw(dev); - unsigned long timeout =3D mei_secs_to_jiffies(MEI_PGI_TIMEOUT); int ret; =20 dev->pg_event =3D MEI_PG_EVENT_WAIT; @@ -718,7 +717,8 @@ static int mei_me_pg_legacy_enter_sync(struct mei_devic= e *dev) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, + dev->timeouts.pgi); mutex_lock(&dev->device_lock); =20 if (dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED) { @@ -744,7 +744,6 @@ static int mei_me_pg_legacy_enter_sync(struct mei_devic= e *dev) static int mei_me_pg_legacy_exit_sync(struct mei_device *dev) { struct mei_me_hw *hw =3D to_me_hw(dev); - unsigned long timeout =3D mei_secs_to_jiffies(MEI_PGI_TIMEOUT); int ret; =20 if (dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED) @@ -756,7 +755,8 @@ static int mei_me_pg_legacy_exit_sync(struct mei_device= *dev) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, + dev->timeouts.pgi); mutex_lock(&dev->device_lock); =20 reply: @@ -772,7 +772,8 @@ static int mei_me_pg_legacy_exit_sync(struct mei_device= *dev) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, + dev->timeouts.pgi); mutex_lock(&dev->device_lock); =20 if (dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED) @@ -887,8 +888,6 @@ static u32 mei_me_d0i3_unset(struct mei_device *dev) static int mei_me_d0i3_enter_sync(struct mei_device *dev) { struct mei_me_hw *hw =3D to_me_hw(dev); - unsigned long d0i3_timeout =3D mei_secs_to_jiffies(MEI_D0I3_TIMEOUT); - unsigned long pgi_timeout =3D mei_secs_to_jiffies(MEI_PGI_TIMEOUT); int ret; u32 reg; =20 @@ -910,7 +909,8 @@ static int mei_me_d0i3_enter_sync(struct mei_device *de= v) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, pgi_timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_RECEIVED, + dev->timeouts.pgi); mutex_lock(&dev->device_lock); =20 if (dev->pg_event !=3D MEI_PG_EVENT_RECEIVED) { @@ -930,7 +930,8 @@ static int mei_me_d0i3_enter_sync(struct mei_device *de= v) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, d0i3_timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, + dev->timeouts.d0i3); mutex_lock(&dev->device_lock); =20 if (dev->pg_event !=3D MEI_PG_EVENT_INTR_RECEIVED) { @@ -990,7 +991,6 @@ static int mei_me_d0i3_enter(struct mei_device *dev) static int mei_me_d0i3_exit_sync(struct mei_device *dev) { struct mei_me_hw *hw =3D to_me_hw(dev); - unsigned long timeout =3D mei_secs_to_jiffies(MEI_D0I3_TIMEOUT); int ret; u32 reg; =20 @@ -1013,7 +1013,8 @@ static int mei_me_d0i3_exit_sync(struct mei_device *d= ev) =20 mutex_unlock(&dev->device_lock); wait_event_timeout(dev->wait_pg, - dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, timeout); + dev->pg_event =3D=3D MEI_PG_EVENT_INTR_RECEIVED, + dev->timeouts.pgi); mutex_lock(&dev->device_lock); =20 if (dev->pg_event !=3D MEI_PG_EVENT_INTR_RECEIVED) { @@ -1686,11 +1687,12 @@ EXPORT_SYMBOL_GPL(mei_me_get_cfg); * * @parent: device associated with physical device (pci/platform) * @cfg: per device generation config + * @slow_fw: configure longer timeouts as FW is slow * * Return: The mei_device pointer on success, NULL on failure. */ struct mei_device *mei_me_dev_init(struct device *parent, - const struct mei_cfg *cfg) + const struct mei_cfg *cfg, bool slow_fw) { struct mei_device *dev; struct mei_me_hw *hw; @@ -1705,7 +1707,7 @@ struct mei_device *mei_me_dev_init(struct device *par= ent, for (i =3D 0; i < DMA_DSCR_NUM; i++) dev->dr_dscr[i].size =3D cfg->dma_size[i]; =20 - mei_device_init(dev, parent, &mei_me_hw_ops); + mei_device_init(dev, parent, slow_fw, &mei_me_hw_ops); hw->cfg =3D cfg; =20 dev->fw_f_fw_ver_supported =3D cfg->fw_ver_supported; diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index ca09274ac299..0e9d90808bcf 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -131,7 +131,7 @@ enum mei_cfg_idx { const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx); =20 struct mei_device *mei_me_dev_init(struct device *parent, - const struct mei_cfg *cfg); + const struct mei_cfg *cfg, bool slow_fw); =20 int mei_me_pg_enter_sync(struct mei_device *dev); int mei_me_pg_exit_sync(struct mei_device *dev); diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c index 00652c137cc7..fccfa806bd63 100644 --- a/drivers/misc/mei/hw-txe.c +++ b/drivers/misc/mei/hw-txe.c @@ -1201,7 +1201,7 @@ struct mei_device *mei_txe_dev_init(struct pci_dev *p= dev) if (!dev) return NULL; =20 - mei_device_init(dev, &pdev->dev, &mei_txe_hw_ops); + mei_device_init(dev, &pdev->dev, false, &mei_txe_hw_ops); =20 hw =3D to_txe_hw(dev); =20 diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index b46077b17114..9381e5c13b4f 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -16,11 +16,16 @@ #define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */ =20 #define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */ +#define MEI_CL_CONNECT_TIMEOUT_SLOW 30 /* HPS: Client Connect Timeout, slo= w FW */ #define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout= */ =20 #define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec= */ #define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time= */ #define MEI_HBM_TIMEOUT 1 /* 1 second */ +#define MEI_HBM_TIMEOUT_SLOW 5 /* 5 second, slow FW */ + +#define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */ +#define MKHI_RCV_TIMEOUT_SLOW 10000 /* receive timeout in msec, slow FW */ =20 /* * FW page size for DMA allocations diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 5bb6ba662cc0..ce030a882d0c 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -359,14 +359,16 @@ bool mei_write_is_idle(struct mei_device *dev) EXPORT_SYMBOL_GPL(mei_write_is_idle); =20 /** - * mei_device_init -- initialize mei_device structure + * mei_device_init - initialize mei_device structure * * @dev: the mei device * @device: the device structure + * @slow_fw: configure longer timeouts as FW is slow * @hw_ops: hw operations */ void mei_device_init(struct mei_device *dev, struct device *device, + bool slow_fw, const struct mei_hw_ops *hw_ops) { /* setup our list array */ @@ -404,6 +406,21 @@ void mei_device_init(struct mei_device *dev, dev->pg_event =3D MEI_PG_EVENT_IDLE; dev->ops =3D hw_ops; dev->dev =3D device; + + dev->timeouts.hw_ready =3D mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT); + dev->timeouts.connect =3D MEI_CONNECT_TIMEOUT; + dev->timeouts.client_init =3D MEI_CLIENTS_INIT_TIMEOUT; + dev->timeouts.pgi =3D mei_secs_to_jiffies(MEI_PGI_TIMEOUT); + dev->timeouts.d0i3 =3D mei_secs_to_jiffies(MEI_D0I3_TIMEOUT); + if (slow_fw) { + dev->timeouts.cl_connect =3D mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT_= SLOW); + dev->timeouts.hbm =3D mei_secs_to_jiffies(MEI_HBM_TIMEOUT_SLOW); + dev->timeouts.mkhi_recv =3D msecs_to_jiffies(MKHI_RCV_TIMEOUT_SLOW); + } else { + dev->timeouts.cl_connect =3D mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT); + dev->timeouts.hbm =3D mei_secs_to_jiffies(MEI_HBM_TIMEOUT); + dev->timeouts.mkhi_recv =3D msecs_to_jiffies(MKHI_RCV_TIMEOUT); + } } EXPORT_SYMBOL_GPL(mei_device_init); =20 diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 786f7c8f7f61..261939b945ef 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -571,7 +571,7 @@ static int mei_ioctl_connect_vtag(struct file *file, cl->state =3D=3D MEI_FILE_DISCONNECTED || cl->state =3D=3D MEI_FILE_DISCONNECT_REQUIRED || cl->state =3D=3D MEI_FILE_DISCONNECT_REPLY), - mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT)); + dev->timeouts.cl_connect); mutex_lock(&dev->device_lock); } =20 diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 694f866f87ef..16f59b3a45fc 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -415,6 +415,17 @@ struct mei_fw_version { =20 #define MEI_MAX_FW_VER_BLOCKS 3 =20 +struct mei_dev_timeouts { + unsigned long hw_ready; /* Timeout on ready message, in jiffies */ + int connect; /* HPS: at least 2 seconds, in seconds */ + unsigned long cl_connect; /* HPS: Client Connect Timeout, in jiffies */ + int client_init; /* HPS: Clients Enumeration Timeout, in seconds */ + unsigned long pgi; /* PG Isolation time response, in jiffies */ + unsigned int d0i3; /* D0i3 set/unset max response time, in jiffies */ + unsigned long hbm; /* HBM operation timeout, in jiffies */ + unsigned long mkhi_recv; /* receive timeout, in jiffies */ +}; + /** * struct mei_device - MEI private device struct * @@ -480,6 +491,8 @@ struct mei_fw_version { * @allow_fixed_address: allow user space to connect a fixed client * @override_fixed_address: force allow fixed address behavior * + * @timeouts: actual timeout values + * * @reset_work : work item for the device reset * @bus_rescan_work : work item for the bus rescan * @@ -568,6 +581,8 @@ struct mei_device { bool allow_fixed_address; bool override_fixed_address; =20 + struct mei_dev_timeouts timeouts; + struct work_struct reset_work; struct work_struct bus_rescan_work; =20 @@ -632,6 +647,7 @@ static inline u32 mei_slots2data(int slots) */ void mei_device_init(struct mei_device *dev, struct device *device, + bool slow_fw, const struct mei_hw_ops *hw_ops); int mei_reset(struct mei_device *dev); int mei_start(struct mei_device *dev); diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 5435604327a7..b5af4e79bd52 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -203,7 +203,7 @@ static int mei_me_probe(struct pci_dev *pdev, const str= uct pci_device_id *ent) } =20 /* allocates and initializes the mei dev structure */ - dev =3D mei_me_dev_init(&pdev->dev, cfg); + dev =3D mei_me_dev_init(&pdev->dev, cfg, false); if (!dev) { err =3D -ENOMEM; goto end; --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 097EFC433EF for ; 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X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707514" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707514" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:25 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630202" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:22 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 08/14] mei: bus: export common mkhi definitions into a separate header Date: Wed, 6 Jul 2022 14:43:39 +0300 Message-Id: <20220706114345.1128018-9-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Vitaly Lubart Exported common mkhi definitions from bus-fixup.c into a separate header file mkhi.h for other driver usage. Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/bus-fixup.c | 32 ++----------------------- drivers/misc/mei/mkhi.h | 45 ++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+), 30 deletions(-) create mode 100644 drivers/misc/mei/mkhi.h diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index 24e91a9ea558..190691abddc9 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -15,6 +15,7 @@ =20 #include "mei_dev.h" #include "client.h" +#include "mkhi.h" =20 #define MEI_UUID_NFC_INFO UUID_LE(0xd2de1625, 0x382d, 0x417d, \ 0x48, 0xa4, 0xef, 0xab, 0xba, 0x8a, 0x12, 0x06) @@ -80,6 +81,7 @@ static void whitelist(struct mei_cl_device *cldev) } =20 #define OSTYPE_LINUX 2 + struct mei_os_ver { __le16 build; __le16 reserved1; @@ -89,20 +91,6 @@ struct mei_os_ver { u8 reserved2; } __packed; =20 -#define MKHI_FEATURE_PTT 0x10 - -struct mkhi_rule_id { - __le16 rule_type; - u8 feature_id; - u8 reserved; -} __packed; - -struct mkhi_fwcaps { - struct mkhi_rule_id id; - u8 len; - u8 data[]; -} __packed; - struct mkhi_fw_ver_block { u16 minor; u8 major; @@ -115,22 +103,6 @@ struct mkhi_fw_ver { struct mkhi_fw_ver_block ver[MEI_MAX_FW_VER_BLOCKS]; } __packed; =20 -#define MKHI_FWCAPS_GROUP_ID 0x3 -#define MKHI_FWCAPS_SET_OS_VER_APP_RULE_CMD 6 -#define MKHI_GEN_GROUP_ID 0xFF -#define MKHI_GEN_GET_FW_VERSION_CMD 0x2 -struct mkhi_msg_hdr { - u8 group_id; - u8 command; - u8 reserved; - u8 result; -} __packed; - -struct mkhi_msg { - struct mkhi_msg_hdr hdr; - u8 data[]; -} __packed; - #define MKHI_OSVER_BUF_LEN (sizeof(struct mkhi_msg_hdr) + \ sizeof(struct mkhi_fwcaps) + \ sizeof(struct mei_os_ver)) diff --git a/drivers/misc/mei/mkhi.h b/drivers/misc/mei/mkhi.h new file mode 100644 index 000000000000..27a9b476904e --- /dev/null +++ b/drivers/misc/mei/mkhi.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2003-2020, Intel Corporation. All rights reserved. + * Intel Management Engine Interface (Intel MEI) Linux driver + */ + +#ifndef _MEI_MKHI_H_ +#define _MEI_MKHI_H_ + +#include "mei_dev.h" + +#define MKHI_FEATURE_PTT 0x10 + +#define MKHI_FWCAPS_GROUP_ID 0x3 +#define MKHI_FWCAPS_SET_OS_VER_APP_RULE_CMD 6 +#define MKHI_GEN_GROUP_ID 0xFF +#define MKHI_GEN_GET_FW_VERSION_CMD 0x2 + +#define MCHI_GROUP_ID 0xA + +struct mkhi_rule_id { + __le16 rule_type; + u8 feature_id; + u8 reserved; +} __packed; + +struct mkhi_fwcaps { + struct mkhi_rule_id id; + u8 len; + u8 data[]; +} __packed; + +struct mkhi_msg_hdr { + u8 group_id; + u8 command; + u8 reserved; + u8 result; +} __packed; + +struct mkhi_msg { + struct mkhi_msg_hdr hdr; + u8 data[]; +} __packed; + +#endif /* _MEI_MKHI_H_ */ --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC3A6CCA473 for ; Wed, 6 Jul 2022 11:45:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232409AbiGFLpH (ORCPT ); Wed, 6 Jul 2022 07:45:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233090AbiGFLoh (ORCPT ); Wed, 6 Jul 2022 07:44:37 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DBC928718 for ; Wed, 6 Jul 2022 04:44:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107870; x=1688643870; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nLYIZ6/0SiQCIHFfcPcARbsfv0VSpDS4mZ3F8uURntA=; b=S5ly7cLJ4pi9ib3MuSZvZ9kSlo7uUnNQqHeKixK9Xg6NOQ4Oac3myOqu EoNXGZ2CLUFcwYJej+M1EEq28SsH3KWSuqVsnWusBrR1UzSZbDn+hbXv4 caRQ3wtQ0LU2XRrEX7FbkFaznVnnJACEWByp6P5GR3yPiNpQDav2Kesl1 EucsNtzx3X/1C/PeP/MplWc4vzpoJH72JndWQF5lD5WojOhmtybYKPsE5 Wf10K46zJh8/DtYcrfLathxR1TFLRPQH9wALZH36n8w5l9ZdRhf+SrhCW DdUiZYSn571udcwL69CST86QmfAH8aqUzPnlFD3zXFgIBAsdrgZnYAK3n A==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707533" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707533" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:28 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630235" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:25 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 09/14] mei: mkhi: add memory ready command Date: Wed, 6 Jul 2022 14:43:40 +0300 Message-Id: <20220706114345.1128018-10-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tomas Winkler Add GSC memory ready command. The command indicates to the firmware that extend operation memory was setup and the firmware may enter PXP mode. CC: Daniele Ceraolo Spurio Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/mkhi.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/mkhi.h b/drivers/misc/mei/mkhi.h index 27a9b476904e..ea9fe487cb0f 100644 --- a/drivers/misc/mei/mkhi.h +++ b/drivers/misc/mei/mkhi.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (c) 2003-2020, Intel Corporation. All rights reserved. + * Copyright (c) 2003-2021, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ =20 @@ -18,6 +18,13 @@ =20 #define MCHI_GROUP_ID 0xA =20 +#define MKHI_GROUP_ID_GFX 0x30 +#define MKHI_GFX_RESET_WARN_CMD_REQ 0x0 +#define MKHI_GFX_MEMORY_READY_CMD_REQ 0x1 + +/* Allow transition to PXP mode without approval */ +#define MKHI_GFX_MEM_READY_PXP_ALLOWED 0x1 + struct mkhi_rule_id { __le16 rule_type; u8 feature_id; @@ -42,4 +49,9 @@ struct mkhi_msg { u8 data[]; } __packed; =20 +struct mkhi_gfx_mem_ready { + struct mkhi_msg_hdr hdr; + uint32_t flags; +} __packed; + #endif /* _MEI_MKHI_H_ */ --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D52CFC433EF for ; Wed, 6 Jul 2022 11:45:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233201AbiGFLpK (ORCPT ); Wed, 6 Jul 2022 07:45:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233098AbiGFLoj (ORCPT ); Wed, 6 Jul 2022 07:44:39 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FE6427FFF for ; Wed, 6 Jul 2022 04:44:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107872; x=1688643872; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HmXS2/fYlvGR3rkPiVvxpMT6bE4EmySeW2KyH3a1ORI=; b=oBBclBLOM5n2J+9meWGPz2fScwo+9m5L7x4FnhLLelujfht7o1Q4kA4W SmwJXn/1kdy+CMSXFp0I+xnKSc2Lzvh1ZJvI9je6/RN8IEFoFDrUWxAZi IJVI6M2ks+8+7jzeBEx2pzGkFqhhbJPvZ3Ke5JX/36DAyT5Qs0xZdkCzs orpyzyaIKruM9Zyxu4DL6K2fQQXA4Gn+i5DOjhIqbdiTvsinH0N7WB4yG 5o52Jspifn11oDmXSUDO0iZjGXP+nEMq+Wq7u+VFW2lJcLSIZP7g5k/Hy +mNsp7fidcpKJw3dr07SYwnBYnl616EmarYhVWRKZXSnF4xYoPpFYnll6 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707551" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707551" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:31 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630252" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:28 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 10/14] mei: gsc: setup gsc extended operational memory Date: Wed, 6 Jul 2022 14:43:41 +0300 Message-Id: <20220706114345.1128018-11-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tomas Winkler 1. Retrieve extended operational memory physical pointers from the auxiliary device info. 2. Setup memory registers. 3. Notify firmware that the memory is ready by sending the memory ready command. 4. Disable PXP device if GSC is not in PXP mode. CC: Daniele Ceraolo Spurio Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/bus-fixup.c | 70 ++++++++++++++++++++++++++++++++++- drivers/misc/mei/gsc-me.c | 16 ++++++++ drivers/misc/mei/hw-me-regs.h | 7 ++++ drivers/misc/mei/hw-me.c | 28 +++++++++++++- drivers/misc/mei/mei_dev.h | 10 +++++ include/linux/mei_aux.h | 1 + 6 files changed, 129 insertions(+), 3 deletions(-) diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index 190691abddc9..d2929f68604d 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -189,6 +189,19 @@ static int mei_fwver(struct mei_cl_device *cldev) return ret; } =20 +static int mei_gfx_memory_ready(struct mei_cl_device *cldev) +{ + struct mkhi_gfx_mem_ready req =3D {0}; + unsigned int mode =3D MEI_CL_IO_TX_INTERNAL; + + req.hdr.group_id =3D MKHI_GROUP_ID_GFX; + req.hdr.command =3D MKHI_GFX_MEMORY_READY_CMD_REQ; + req.flags =3D MKHI_GFX_MEM_READY_PXP_ALLOWED; + + dev_dbg(&cldev->dev, "Sending memory ready command\n"); + return __mei_cl_send(cldev->cl, (u8 *)&req, sizeof(req), 0, mode); +} + static void mei_mkhi_fix(struct mei_cl_device *cldev) { int ret; @@ -235,6 +248,39 @@ static void mei_gsc_mkhi_ver(struct mei_cl_device *cld= ev) dev_err(&cldev->dev, "FW version command failed %d\n", ret); mei_cldev_disable(cldev); } + +static void mei_gsc_mkhi_fix_ver(struct mei_cl_device *cldev) +{ + int ret; + + /* No need to enable the client if nothing is needed from it */ + if (!cldev->bus->fw_f_fw_ver_supported && + (cldev->bus->pxp_mode !=3D MEI_DEV_PXP_INIT)) + return; + + ret =3D mei_cldev_enable(cldev); + if (ret) + return; + + if (cldev->bus->pxp_mode =3D=3D MEI_DEV_PXP_INIT) { + ret =3D mei_gfx_memory_ready(cldev); + if (ret < 0) + dev_err(&cldev->dev, "memory ready command failed %d\n", ret); + else + dev_dbg(&cldev->dev, "memory ready command sent\n"); + /* we go to reset after that */ + cldev->bus->pxp_mode =3D MEI_DEV_PXP_SETUP; + goto out; + } + + ret =3D mei_fwver(cldev); + if (ret < 0) + dev_err(&cldev->dev, "FW version command failed %d\n", + ret); +out: + mei_cldev_disable(cldev); +} + /** * mei_wd - wd client on the bus, change protocol version * as the API has changed. @@ -474,6 +520,26 @@ static void vt_support(struct mei_cl_device *cldev) cldev->do_match =3D 1; } =20 +/** + * pxp_isready - enable bus client if pxp is ready + * + * @cldev: me clients device + */ +static void pxp_isready(struct mei_cl_device *cldev) +{ + struct mei_device *bus =3D cldev->bus; + + switch (bus->pxp_mode) { + case MEI_DEV_PXP_READY: + case MEI_DEV_PXP_DEFAULT: + cldev->do_match =3D 1; + break; + default: + cldev->do_match =3D 0; + break; + } +} + #define MEI_FIXUP(_uuid, _hook) { _uuid, _hook } =20 static struct mei_fixup { @@ -487,10 +553,10 @@ static struct mei_fixup { MEI_FIXUP(MEI_UUID_WD, mei_wd), MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix), MEI_FIXUP(MEI_UUID_IGSC_MKHI, mei_gsc_mkhi_ver), - MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_ver), + MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_fix_ver), MEI_FIXUP(MEI_UUID_HDCP, whitelist), MEI_FIXUP(MEI_UUID_ANY, vt_support), - MEI_FIXUP(MEI_UUID_PAVP, whitelist), + MEI_FIXUP(MEI_UUID_PAVP, pxp_isready), }; =20 /** diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index 4f6c916282b7..c8a167b57cc9 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -32,6 +32,17 @@ static int mei_gsc_read_hfs(const struct mei_device *dev= , int where, u32 *val) return 0; } =20 +static void mei_gsc_set_ext_op_mem(const struct mei_me_hw *hw, struct reso= urce *mem) +{ + u32 low =3D lower_32_bits(mem->start); + u32 hi =3D upper_32_bits(mem->start); + u32 limit =3D (resource_size(mem) / SZ_4K) | GSC_EXT_OP_MEM_VALID; + + iowrite32(low, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_LO_REG); + iowrite32(hi, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_HI_REG); + iowrite32(limit, hw->mem_addr + H_GSC_EXT_OP_MEM_LIMIT_REG); +} + static int mei_gsc_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *aux_dev_id) { @@ -67,6 +78,11 @@ static int mei_gsc_probe(struct auxiliary_device *aux_de= v, =20 dev_set_drvdata(device, dev); =20 + if (adev->ext_op_mem.start) { + mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem); + dev->pxp_mode =3D MEI_DEV_PXP_INIT; + } + /* use polling */ if (mei_me_hw_use_polling(hw)) { mei_disable_interrupts(dev); diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index 15e8e2b322b1..8049f288f74c 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -127,6 +127,8 @@ # define PCI_CFG_HFS_3_FW_SKU_SPS 0x00000060 #define PCI_CFG_HFS_4 0x64 #define PCI_CFG_HFS_5 0x68 +# define GSC_CFG_HFS_5_BOOT_TYPE_MSK 0x00000003 +# define GSC_CFG_HFS_5_BOOT_TYPE_PXP 3 #define PCI_CFG_HFS_6 0x6C =20 /* MEI registers */ @@ -143,6 +145,11 @@ /* H_D0I3C - D0I3 Control */ #define H_D0I3C 0x800 =20 +#define H_GSC_EXT_OP_MEM_BASE_ADDR_LO_REG 0x100 +#define H_GSC_EXT_OP_MEM_BASE_ADDR_HI_REG 0x104 +#define H_GSC_EXT_OP_MEM_LIMIT_REG 0x108 +#define GSC_EXT_OP_MEM_VALID BIT(31) + /* register bits of H_CSR (Host Control Status register) */ /* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */ #define H_CBD 0xFF000000 diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 6a8e8f3cea7e..c86d6018bc20 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -433,6 +433,29 @@ static bool mei_me_hw_is_resetting(struct mei_device *= dev) return (mecsr & ME_RST_HRA) =3D=3D ME_RST_HRA; } =20 +/** + * mei_gsc_pxp_check - check for gsc firmware entering pxp mode + * + * @dev: the device structure + */ +static void mei_gsc_pxp_check(struct mei_device *dev) +{ + struct mei_me_hw *hw =3D to_me_hw(dev); + u32 fwsts5 =3D 0; + + if (dev->pxp_mode =3D=3D MEI_DEV_PXP_DEFAULT) + return; + + hw->read_fws(dev, PCI_CFG_HFS_5, &fwsts5); + trace_mei_pci_cfg_read(dev->dev, "PCI_CFG_HFS_5", PCI_CFG_HFS_5, fwsts5); + if ((fwsts5 & GSC_CFG_HFS_5_BOOT_TYPE_MSK) =3D=3D GSC_CFG_HFS_5_BOOT_TYPE= _PXP) { + dev_dbg(dev->dev, "pxp mode is ready 0x%08x\n", fwsts5); + dev->pxp_mode =3D MEI_DEV_PXP_READY; + } else { + dev_dbg(dev->dev, "pxp mode is not ready 0x%08x\n", fwsts5); + } +} + /** * mei_me_hw_ready_wait - wait until the me(hw) has turned ready * or timeout is reached @@ -452,6 +475,8 @@ static int mei_me_hw_ready_wait(struct mei_device *dev) return -ETIME; } =20 + mei_gsc_pxp_check(dev); + mei_me_hw_reset_release(dev); dev->recvd_hw_ready =3D false; return 0; @@ -1270,7 +1295,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *= dev_id) =20 /* check if ME wants a reset */ if (!mei_hw_is_ready(dev) && dev->dev_state !=3D MEI_DEV_RESETTING) { - dev_warn(dev->dev, "FW not ready: resetting.\n"); + dev_warn(dev->dev, "FW not ready: resetting: dev_state =3D %d pxp =3D %d= \n", + dev->dev_state, dev->pxp_mode); if (dev->dev_state =3D=3D MEI_DEV_POWERING_DOWN || dev->dev_state =3D=3D MEI_DEV_POWER_DOWN) mei_cl_all_disconnect(dev); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 16f59b3a45fc..7c508bca9a00 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -62,6 +62,14 @@ enum mei_dev_state { MEI_DEV_POWER_UP }; =20 +/* MEI PXP mode state */ +enum mei_dev_pxp_mode { + MEI_DEV_PXP_DEFAULT =3D 0, + MEI_DEV_PXP_INIT =3D 1, + MEI_DEV_PXP_SETUP =3D 2, + MEI_DEV_PXP_READY =3D 3, +}; + const char *mei_dev_state_str(int state); =20 enum mei_file_transaction_states { @@ -454,6 +462,7 @@ struct mei_dev_timeouts { * @reset_count : number of consecutive resets * @dev_state : device state * @hbm_state : state of host bus message protocol + * @pxp_mode : PXP device mode * @init_clients_timer : HBM init handshake timeout * * @pg_event : power gating event @@ -537,6 +546,7 @@ struct mei_device { unsigned long reset_count; enum mei_dev_state dev_state; enum mei_hbm_state hbm_state; + enum mei_dev_pxp_mode pxp_mode; u16 init_clients_timer; =20 /* diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h index a29f4064b9c0..c3fc137a2aba 100644 --- a/include/linux/mei_aux.h +++ b/include/linux/mei_aux.h @@ -11,6 +11,7 @@ struct mei_aux_device { struct auxiliary_device aux_dev; int irq; struct resource bar; + struct resource ext_op_mem; bool slow_fw; }; =20 --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22666C43334 for ; Wed, 6 Jul 2022 11:45:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233390AbiGFLpO (ORCPT ); Wed, 6 Jul 2022 07:45:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233212AbiGFLon (ORCPT ); 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06 Jul 2022 04:44:35 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630276" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:32 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 11/14] mei: gsc: add transition to PXP mode in resume flow Date: Wed, 6 Jul 2022 14:43:42 +0300 Message-Id: <20220706114345.1128018-12-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Vitaly Lubart Added transition to PXP mode in resume flow. CC: Daniele Ceraolo Spurio Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/gsc-me.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index c8a167b57cc9..71f247f5e7ca 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -182,11 +182,22 @@ static int __maybe_unused mei_gsc_pm_suspend(struct d= evice *device) static int __maybe_unused mei_gsc_pm_resume(struct device *device) { struct mei_device *dev =3D dev_get_drvdata(device); + struct auxiliary_device *aux_dev; + struct mei_aux_device *adev; int err; + struct mei_me_hw *hw; =20 if (!dev) return -ENODEV; =20 + hw =3D to_me_hw(dev); + aux_dev =3D to_auxiliary_dev(device); + adev =3D auxiliary_dev_to_mei_aux_dev(aux_dev); + if (adev->ext_op_mem.start) { + mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem); + dev->pxp_mode =3D MEI_DEV_PXP_INIT; + } + err =3D mei_restart(dev); if (err) return err; --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E08BDC43334 for ; Wed, 6 Jul 2022 11:45:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233273AbiGFLp0 (ORCPT ); Wed, 6 Jul 2022 07:45:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233252AbiGFLoo (ORCPT ); Wed, 6 Jul 2022 07:44:44 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93428286DF for ; Wed, 6 Jul 2022 04:44:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107878; x=1688643878; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bcNuYR0ON77X4etBFhJ68qoXGVrYaYDrSU1eNp2bRz4=; b=BWKFRXEHycsQjC8A1y2Mv3WTLxPogQNKxFDTQeXPCkUk0whX1DzVu23R 5MPl01TIAxDaxgj9Eq1/z5POQwvRSGDV+H6fZW03mcGQGPpnPeRsG3JCf e58IcSnloTH+gJu2hF68uVkdanUkYylntgqdg2V3680TnFCFbgub+pe9r cBhJa/pBEWxGaamW6vAPXOfTTCPkBBZJ0ltUJRKrPGYEb6MLeTEtlxtKr /UPU1P/+XruWiK7fTZmNZr9BLeTbfLG5r+l+WO9ZnkCbK4hmx0KnpWBNL yjJk9gYRf/2f1Yy2voulgzPAAXLqaoVI9m/DIpnkaYBbiE+F2+zNTKD7p Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707574" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707574" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:38 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630287" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:35 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 12/14] mei: debugfs: add pxp mode to devstate in debugfs Date: Wed, 6 Jul 2022 14:43:43 +0300 Message-Id: <20220706114345.1128018-13-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tomas Winkler Add pxp mode devstate to debugfs to monitor pxp state machine progress. This is useful to debug issues in scenarios in which the pxp state needs to be re-initialized, like during power transitions such as suspend/resume. With this debugfs the state could be monitored to ensure that pxp is in the ready state. CC: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/debugfs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index 1ce61e9e24fc..4074fec866a6 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -86,6 +86,20 @@ static int mei_dbgfs_active_show(struct seq_file *m, voi= d *unused) } DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_active); =20 +static const char *mei_dev_pxp_mode_str(enum mei_dev_pxp_mode state) +{ +#define MEI_PXP_MODE(state) case MEI_DEV_PXP_##state: return #state + switch (state) { + MEI_PXP_MODE(DEFAULT); + MEI_PXP_MODE(INIT); + MEI_PXP_MODE(SETUP); + MEI_PXP_MODE(READY); + default: + return "unknown"; + } +#undef MEI_PXP_MODE +} + static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused) { struct mei_device *dev =3D m->private; @@ -112,6 +126,9 @@ static int mei_dbgfs_devstate_show(struct seq_file *m, = void *unused) seq_printf(m, "pg: %s, %s\n", mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED", mei_pg_state_str(mei_pg_state(dev))); + + seq_printf(m, "pxp: %s\n", mei_dev_pxp_mode_str(dev->pxp_mode)); + return 0; } DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_devstate); --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2A7CC433EF for ; Wed, 6 Jul 2022 11:45:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233291AbiGFLp2 (ORCPT ); Wed, 6 Jul 2022 07:45:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233050AbiGFLoq (ORCPT ); Wed, 6 Jul 2022 07:44:46 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4045B28739 for ; Wed, 6 Jul 2022 04:44:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1657107882; x=1688643882; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KhCt74Bje3qdmODyWCFzqhE1VcM2zonwoqz6dGScG38=; b=T+/l89OlEbv4C88H3SUZ/ZHLtLsu8nokROu2UChg+D9btRUphBmuSM7U Cms0QXa85dutMqnHj0DGA23Xf2b/xuK0GD2UI4tFV7kjbmWKWwhWj0s6l 8eq3gJrdQFvzoDBBoTUdFpjMIIp6JyPSs7XxhhkaH+RzCfLprWC9TNXDt HbyxQJz7TgM+t/3WUl+Pt6XdqIdTz0TW7AV+1OT5oBUtHlN7FVBaPr3kL fVN0L+W2oJ0ZJfhH5JEBfv79U3Wd6TmT1G4A9YZo3okEJ+NRX6/MtC+g0 nUwI1uc2920JTABUhPdUJ7QR5wklly/dF+U2vocWqSOKbSL/d4YhJeXv3 A==; X-IronPort-AV: E=McAfee;i="6400,9594,10399"; a="347707585" X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="347707585" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:41 -0700 X-IronPort-AV: E=Sophos;i="5.92,249,1650956400"; d="scan'208";a="650630298" Received: from sannilnx.jer.intel.com ([10.12.26.175]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2022 04:44:38 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Alan Previn , Daniele Ceraolo Spurio Subject: [PATCH v5 13/14] drm/i915/gsc: allocate extended operational memory in LMEM Date: Wed, 6 Jul 2022 14:43:44 +0300 Message-Id: <20220706114345.1128018-14-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tomas Winkler GSC requires more operational memory than available on chip. Reserve 4M of LMEM for GSC operation. The memory is provided to the GSC as struct resource to the auxiliary data of the child device. Cc: Alan Previn Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Signed-off-by: Alexander Usyskin Reviewed-by: Alan Previn --- drivers/gpu/drm/i915/gt/intel_gsc.c | 92 ++++++++++++++++++++++++++--- drivers/gpu/drm/i915/gt/intel_gsc.h | 3 + 2 files changed, 88 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/= intel_gsc.c index bfc307e49bf9..4d87519d5773 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.c +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c @@ -7,6 +7,7 @@ #include #include "i915_drv.h" #include "i915_reg.h" +#include "gem/i915_gem_region.h" #include "gt/intel_gsc.h" #include "gt/intel_gt.h" =20 @@ -36,12 +37,68 @@ static int gsc_irq_init(int irq) return irq_set_chip_data(irq, NULL); } =20 +static int +gsc_ext_om_alloc(struct intel_gsc *gsc, struct intel_gsc_intf *intf, size_= t size) +{ + struct intel_gt *gt =3D gsc_to_gt(gsc); + struct drm_i915_gem_object *obj; + void *vaddr; + int err; + + obj =3D i915_gem_object_create_lmem(gt->i915, size, I915_BO_ALLOC_CONTIGU= OUS); + if (IS_ERR(obj)) { + drm_err(>->i915->drm, "Failed to allocate gsc memory\n"); + return PTR_ERR(obj); + } + + err =3D i915_gem_object_pin_pages_unlocked(obj); + if (err) { + drm_err(>->i915->drm, "Failed to pin pages for gsc memory\n"); + goto out_put; + } + + vaddr =3D i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(gt= ->i915, obj, true)); + if (IS_ERR(vaddr)) { + err =3D PTR_ERR(vaddr); + drm_err(>->i915->drm, "Failed to map gsc memory\n"); + goto out_unpin; + } + + memset(vaddr, 0, obj->base.size); + + i915_gem_object_unpin_map(obj); + + intf->gem_obj =3D obj; + + return 0; + +out_unpin: + i915_gem_object_unpin_pages(obj); +out_put: + i915_gem_object_put(obj); + return err; +} + +static void gsc_ext_om_destroy(struct intel_gsc_intf *intf) +{ + struct drm_i915_gem_object *obj =3D fetch_and_zero(&intf->gem_obj); + + if (!obj) + return; + + if (i915_gem_object_has_pinned_pages(obj)) + i915_gem_object_unpin_pages(obj); + + i915_gem_object_put(obj); +} + struct gsc_def { const char *name; unsigned long bar; size_t bar_size; bool use_polling; bool slow_fw; + size_t lmem_size; }; =20 /* gsc resources and definitions (HECI1 and HECI2) */ @@ -74,6 +131,7 @@ static const struct gsc_def gsc_def_dg2[] =3D { .name =3D "mei-gsc", .bar =3D DG2_GSC_HECI1_BASE, .bar_size =3D GSC_BAR_LENGTH, + .lmem_size =3D SZ_4M, }, { .name =3D "mei-gscfi", @@ -90,26 +148,33 @@ static void gsc_release_dev(struct device *dev) kfree(adev); } =20 -static void gsc_destroy_one(struct intel_gsc_intf *intf) +static void gsc_destroy_one(struct drm_i915_private *i915, + struct intel_gsc *gsc, unsigned int intf_id) { + struct intel_gsc_intf *intf =3D &gsc->intf[intf_id]; + if (intf->adev) { auxiliary_device_delete(&intf->adev->aux_dev); auxiliary_device_uninit(&intf->adev->aux_dev); intf->adev =3D NULL; } + if (intf->irq >=3D 0) irq_free_desc(intf->irq); intf->irq =3D -1; + + gsc_ext_om_destroy(intf); } =20 static void gsc_init_one(struct drm_i915_private *i915, - struct intel_gsc_intf *intf, - unsigned int intf_id) + struct intel_gsc *gsc, + unsigned int intf_id) { struct pci_dev *pdev =3D to_pci_dev(i915->drm.dev); struct mei_aux_device *adev; struct auxiliary_device *aux_dev; const struct gsc_def *def; + struct intel_gsc_intf *intf =3D &gsc->intf[intf_id]; int ret; =20 intf->irq =3D -1; @@ -141,7 +206,7 @@ static void gsc_init_one(struct drm_i915_private *i915, intf->irq =3D irq_alloc_desc(0); if (intf->irq < 0) { drm_err(&i915->drm, "gsc irq error %d\n", intf->irq); - return; + goto fail; } =20 ret =3D gsc_irq_init(intf->irq); @@ -155,6 +220,19 @@ static void gsc_init_one(struct drm_i915_private *i915, if (!adev) goto fail; =20 + if (def->lmem_size) { + dev_dbg(&pdev->dev, "setting up GSC lmem\n"); + + if (gsc_ext_om_alloc(gsc, intf, def->lmem_size)) { + dev_err(&pdev->dev, "setting up gsc extended operational memory failed\= n"); + kfree(adev); + goto fail; + } + + adev->ext_op_mem.start =3D i915_gem_object_get_dma_address(intf->gem_obj= , 0); + adev->ext_op_mem.end =3D adev->ext_op_mem.start + def->lmem_size; + } + adev->irq =3D intf->irq; adev->bar.parent =3D &pdev->resource[0]; adev->bar.start =3D def->bar + pdev->resource[0].start; @@ -188,7 +266,7 @@ static void gsc_init_one(struct drm_i915_private *i915, =20 return; fail: - gsc_destroy_one(intf); + gsc_destroy_one(i915, gsc, intf->id); } =20 static void gsc_irq_handler(struct intel_gt *gt, unsigned int intf_id) @@ -229,7 +307,7 @@ void intel_gsc_init(struct intel_gsc *gsc, struct drm_i= 915_private *i915) return; =20 for (i =3D 0; i < INTEL_GSC_NUM_INTERFACES; i++) - gsc_init_one(i915, &gsc->intf[i], i); + gsc_init_one(i915, gsc, i); } =20 void intel_gsc_fini(struct intel_gsc *gsc) @@ -241,5 +319,5 @@ void intel_gsc_fini(struct intel_gsc *gsc) return; =20 for (i =3D 0; i < INTEL_GSC_NUM_INTERFACES; i++) - gsc_destroy_one(&gsc->intf[i]); + gsc_destroy_one(gt->i915, gsc, i); } diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.h b/drivers/gpu/drm/i915/gt/= intel_gsc.h index 68582f912b21..fcac1775e9c3 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.h +++ b/drivers/gpu/drm/i915/gt/intel_gsc.h @@ -20,11 +20,14 @@ struct mei_aux_device; =20 /** * struct intel_gsc - graphics security controller + * + * @gem_obj: scratch memory GSC operations * @intf : gsc interface */ struct intel_gsc { struct intel_gsc_intf { struct mei_aux_device *adev; + struct drm_i915_gem_object *gem_obj; int irq; unsigned int id; } intf[INTEL_GSC_NUM_INTERFACES]; --=20 2.34.1 From nobody Sun Apr 19 04:03:43 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A076C433EF for ; Wed, 6 Jul 2022 11:45:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233411AbiGFLpb (ORCPT ); Wed, 6 Jul 2022 07:45:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232351AbiGFLor (ORCPT ); Wed, 6 Jul 2022 07:44:47 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3DE827FEE for ; Wed, 6 Jul 2022 04:44:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; 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06 Jul 2022 04:44:42 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Cc: Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio Subject: [PATCH v5 14/14] HAX: drm/i915: force INTEL_MEI_GSC on for CI Date: Wed, 6 Jul 2022 14:43:45 +0300 Message-Id: <20220706114345.1128018-15-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706114345.1128018-1-alexander.usyskin@intel.com> References: <20220706114345.1128018-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Daniele Ceraolo Spurio After the new config option is merged we'll enable it by default in the CI config, but for now just force it on via the i915 Kconfig so we can get pre-merge CI results for it. Signed-off-by: Daniele Ceraolo Spurio Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kcon= fig.debug index e7fd3e76f8a2..be4ef485d6c1 100644 --- a/drivers/gpu/drm/i915/Kconfig.debug +++ b/drivers/gpu/drm/i915/Kconfig.debug @@ -48,6 +48,7 @@ config DRM_I915_DEBUG select DRM_I915_DEBUG_RUNTIME_PM select DRM_I915_SW_FENCE_DEBUG_OBJECTS select DRM_I915_SELFTEST + select INTEL_MEI_GSC select BROKEN # for prototype uAPI default n help --=20 2.34.1