From patchwork Fri Aug 19 22:53:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniele Ceraolo Spurio X-Patchwork-Id: 12949335 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 64702C28D13 for ; Fri, 19 Aug 2022 22:54:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 068A710E95A; Fri, 19 Aug 2022 22:54:07 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id E028310E54E; Fri, 19 Aug 2022 22:53:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660949636; x=1692485636; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+6WF2tPveIC/fmo7h8nwLR5FClYJlHnaGuteQvdp+R4=; b=ltHty/PBjMVkZITFm8LM4Hj/IcjNN1c3HRpo+rsjXpqTgfpI3JGbopAz szGViP2QfULqIHY2lpvp4Sog05jqHHn7mnvLPwFmfW/xpJO9YwBZ+2/Lj m7608OZWpN0NzoPFVhrH+9iD9vJTTeuNDPG+aGJvpqgUHuoKt1G08aGwJ e9Bga43qo+90A4OOYhf+ky3MqmQK0oLWG70vrXZJjmh1qj6Tk83fap5mE i+oLmPnEiU6NYt2xzRgx6ka9eLXIQvcL9RhV0teN0QAGx+cWazkc31CmS CzIkUTljN14pq8uYYBZ9B+v5b0//iNYxz+vCjmPYQKRLCOyqki2OtWovE A==; X-IronPort-AV: E=McAfee;i="6500,9779,10444"; a="273513233" X-IronPort-AV: E=Sophos;i="5.93,249,1654585200"; d="scan'208";a="273513233" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2022 15:53:56 -0700 X-IronPort-AV: E=Sophos;i="5.93,249,1654585200"; d="scan'208";a="936378486" Received: from valcore-skull-1.fm.intel.com ([10.1.27.19]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2022 15:53:56 -0700 From: Daniele Ceraolo Spurio To: intel-gfx@lists.freedesktop.org Date: Fri, 19 Aug 2022 15:53:25 -0700 Message-Id: <20220819225335.3947346-6-daniele.ceraolospurio@intel.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220819225335.3947346-1-daniele.ceraolospurio@intel.com> References: <20220819225335.3947346-1-daniele.ceraolospurio@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 05/15] mei: pxp: add command streamer API to the PXP driver X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alan Previn , Greg Kroah-Hartman , dri-devel@lists.freedesktop.org, Tomas Winkler , Vitaly Lubart Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Vitaly Lubart The discrete graphics card with GSC firmware using command streamer API hence it requires to enhance pxp module with the new gsc_command() handler. The handler is implemented via mei_pxp_gsc_command() which is just just a thin wrapper around mei_cldev_send_gsc_command() V2: 1. More detailed commit message 2. Fix typo in the comments Signed-off-by: Vitaly Lubart Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Cc: Greg Kroah-Hartman Reviewed-by: Alan Previn --- drivers/misc/mei/pxp/mei_pxp.c | 28 ++++++++++++++++++++++++++++ include/drm/i915_pxp_tee_interface.h | 5 +++++ 2 files changed, 33 insertions(+) diff --git a/drivers/misc/mei/pxp/mei_pxp.c b/drivers/misc/mei/pxp/mei_pxp.c index 5c39457e3f53..17c5d201603f 100644 --- a/drivers/misc/mei/pxp/mei_pxp.c +++ b/drivers/misc/mei/pxp/mei_pxp.c @@ -77,10 +77,38 @@ mei_pxp_receive_message(struct device *dev, void *buffer, size_t size) return byte; } +/** + * mei_pxp_gsc_command() - sends a gsc command, by sending + * a sgl mei message to gsc and receiving reply from gsc + * + * @dev: device corresponding to the mei_cl_device + * @client_id: client id to send the command to + * @fence_id: fence id to send the command to + * @sg_in: scatter gather list containing addresses for rx message buffer + * @total_in_len: total length of data in 'in' sg, can be less than the sum of buffers sizes + * @sg_out: scatter gather list containing addresses for tx message buffer + * + * Return: bytes sent on Success, <0 on Failure + */ +static ssize_t mei_pxp_gsc_command(struct device *dev, u8 client_id, u32 fence_id, + struct scatterlist *sg_in, size_t total_in_len, + struct scatterlist *sg_out) +{ + struct mei_cl_device *cldev; + + if (!dev || !sg_in || !sg_out) + return -EINVAL; + + cldev = to_mei_cl_device(dev); + + return mei_cldev_send_gsc_command(cldev, client_id, fence_id, sg_in, total_in_len, sg_out); +} + static const struct i915_pxp_component_ops mei_pxp_ops = { .owner = THIS_MODULE, .send = mei_pxp_send_message, .recv = mei_pxp_receive_message, + .gsc_command = mei_pxp_gsc_command, }; static int mei_component_master_bind(struct device *dev) diff --git a/include/drm/i915_pxp_tee_interface.h b/include/drm/i915_pxp_tee_interface.h index af593ec64469..67d44a1827f9 100644 --- a/include/drm/i915_pxp_tee_interface.h +++ b/include/drm/i915_pxp_tee_interface.h @@ -8,6 +8,7 @@ #include #include +#include /** * struct i915_pxp_component_ops - ops for PXP services. @@ -23,6 +24,10 @@ struct i915_pxp_component_ops { int (*send)(struct device *dev, const void *message, size_t size); int (*recv)(struct device *dev, void *buffer, size_t size); + ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id, + struct scatterlist *sg_in, size_t total_in_len, + struct scatterlist *sg_out); + }; /**