From patchwork Mon Feb 17 15:38:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 13978165 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B83D1C021A9 for ; Mon, 17 Feb 2025 16:01:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=r5Gz+eTflbpmy1n1NWxy8gWni1C+C4lEteb9Jr1lcBQ=; b=NKcVvgMLcEXxiXoyM/c2otw7Xx +iPECMNImCCq9pirnC7FiL4IT9PssMlDnzkh/FkaxSrchW0HB3b0Z7WJmQcefrmL8IFy5ImXgttrt 2Y1yIwJO/x7roKQ4N4LtW3GfaLnMTB+bm1bNYfQbiqfRuEuTCQSUaGqEyQGKFb0SmvmRn/+e70aMl YKwf4mDtkuDUaNJQyT//uccCDj9KAysGft59SWYaDHaeFr54W6Xar+/8DPVXwpIwWoGI6xQBB+Ct1 XbsEO+LAZOdSUPZpTBs2A9yXuBcJ38DZ9nN5BqaGxA9Eu4zYuFaR47LJk97VsvbDnwGSdlBQYCi2S QZTHOGhQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tk3YR-00000005BUA-06WE; Mon, 17 Feb 2025 16:01:07 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tk3De-000000055XP-15GO for linux-arm-kernel@lists.infradead.org; Mon, 17 Feb 2025 15:39:39 +0000 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 MIME-Version: 1.0 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250217_073938_341826_34D09122 X-CRM114-Status: UNSURE ( 9.08 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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..761ea8fe3bb6080c893a5eb365358b62d6a4f3ff 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 *dev, u32 property) #define ffa_partition_supports_direct_recv(dev) \ ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_RECV) +#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 registers */ struct ffa_send_direct_data { unsigned long data0; /* w3/x3 */