From nobody Fri Dec 19 13:49:45 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 42B95225A4F for ; Mon, 17 Feb 2025 15:39:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739806779; cv=none; b=pLL7g62mEzNxB/9rNZveGiDQbRDnRxZ4zOMgjvGc9rW2A/kSBd4sMfvqjgrw1h56s4/2rez3kdFbJuM0k1nLofJoMTmlaLFhW9iuU4HsnH+oHOyVO/PUxEvEabsvQ8BCXnpFRCk349Oq3+fdWEmVdmhrcI2rquFKZSDdueL0dMQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739806779; c=relaxed/simple; bh=zb/wqtoceP7rQokuw62BwnrJfaGX30KLx6uKJCNJ5iw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To; b=oYuUxs1hUkcw5zzdJcYQ4yOxZYGT7ZujgzZ/Db1OeSzxdxzzh394mMojOZCf7xdpIt8pRXPvvytgyljWLjCWC/N696eaIkAtgdrloqfntFsBR6FTB/Dy4Lr8LGYJuejncPCPTvfTgXdy0f4QhSwzgKS5i3W2bPw6x0E9U+A4VkQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 41AE7152B; Mon, 17 Feb 2025 07:39:57 -0800 (PST) Received: from e133711.arm.com (e133711.arm.com [10.1.196.55]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5D1893F6A8; Mon, 17 Feb 2025 07:39:37 -0800 (PST) From: Sudeep Holla Date: Mon, 17 Feb 2025 15:38:50 +0000 Subject: [PATCH v3 09/19] firmware: arm_ffa: Helper to check if a partition can receive REQUEST2 messages Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250217-ffa_updates-v3-9-bd1d9de615e7@arm.com> References: <20250217-ffa_updates-v3-0-bd1d9de615e7@arm.com> In-Reply-To: <20250217-ffa_updates-v3-0-bd1d9de615e7@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sudeep Holla , Viresh Kumar X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1512; i=sudeep.holla@arm.com; h=from:subject:message-id; bh=zb/wqtoceP7rQokuw62BwnrJfaGX30KLx6uKJCNJ5iw=; b=owEBbQKS/ZANAwAIAQBBurwxfuKYAcsmYgBns1guSUwasvblxx/05UyIRKxy/I2B9unSMhxyG raJkTYz1OSJAjMEAAEIAB0WIQS6ceUSBvMeskPdk+EAQbq8MX7imAUCZ7NYLgAKCRAAQbq8MX7i mMp8D/4/tj2RDchJ64EabNb246U+JEB/pRicqivUqcuoWmC3Tsy4/aSFlfVEXIZmuhg/ilgVQ4e 2kTvf/7GSfe6YiSvES3quVM0Wf/LUD0KrRdlFBroWG0iHKc7e/VE3lwjaZEYanb8iKy5mqzJn6i 8HpvWx1N3ginxjHPAJHmmJ8hrPsU7C68YUOF7yl4byyqBn7csqg/W3dt3cjuIuhC2IRG309CiQI kf3N50b2GxkNe0z/Pire1vXcgzpVGsdmuVBJAAQdRMo+RNi9URFSje7Ka69uGoiv1UBGWE71cYr 0wPKPVLZv7C1yiYmPzrOL7lrvn7adANkfT7cp3mmgdkyb4s6jEuCGdLPZzctEzqzyDj0KbMXYWh /8OaoRlbcQfaPVYO3ldgrQ7GlcIgcfiI+O0VwYQD7BkaSbbbfrUmr4Ml5OY2S+BAHoaMFDxzZB8 42c9ro5qWFg4X/zoztQN7561Bj+ndVzjcKuKq+FT0OJs13AUTv5pBgZ9y4qiYyCTl7OjvBvkjFY xLPB2Go2S5os3L2NcIIbW63S2BrMTKIdinK2VwfR7DkU4TABTJyU942nB19dzE50sjHKhEhSn9M S5GXOLQDumOIsx++hDCMhUyOUxyeWZlysx4AcGZ0kjc1VeqkDL0MEFBpom57pvkKScjJ5JJvRcy QTijAplkgLHANMA== X-Developer-Key: i=sudeep.holla@arm.com; a=openpgp; fpr=7360A21742ADF5A11767C1C139CFD4755FE2D5B4 Add a helper that allows FF-A drivers to check if the partition can receive the direct requests via the FFA_MSG_SEND_DIRECT_REQ2 ABI. Tested-by: Viresh Kumar Signed-off-by: Sudeep Holla --- include/linux/arm_ffa.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h index ca2ad5b0ac4309052d55dcf546d29423bbd40a67..761ea8fe3bb6080c893a5eb3653= 58b62d6a4f3ff 100644 --- a/include/linux/arm_ffa.h +++ b/include/linux/arm_ffa.h @@ -240,6 +240,10 @@ struct ffa_partition_info { #define FFA_PARTITION_NOTIFICATION_RECV BIT(3) /* partition runs in the AArch64 execution state. */ #define FFA_PARTITION_AARCH64_EXEC BIT(8) +/* partition supports receipt of direct request2 */ +#define FFA_PARTITION_DIRECT_REQ2_RECV BIT(9) +/* partition can send direct request2. */ +#define FFA_PARTITION_DIRECT_REQ2_SEND BIT(10) u32 properties; uuid_t uuid; }; @@ -259,6 +263,10 @@ bool ffa_partition_check_property(struct ffa_device *d= ev, u32 property) #define ffa_partition_supports_direct_recv(dev) \ ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_RECV) =20 +#define ffa_partition_supports_direct_req2_recv(dev) \ + (ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_REQ2_RECV) && \ + !dev->mode_32bit) + /* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP} which pass data via registe= rs */ struct ffa_send_direct_data { unsigned long data0; /* w3/x3 */ --=20 2.34.1