From nobody Mon Feb 9 02:27:22 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EEA471C9DE5 for ; Fri, 31 Jan 2025 11:25:15 +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=1738322717; cv=none; b=S97PcgRiekpMMZo614E2GuaCKJeQoUeq+9DZlQf3v/pxrag81OOenAktAwD8F+4re139+r5D13ssHpl9hqkWXvZoveYT0pQbxtJtbfoCVYHHU9N6AZjAteNDTroT+oHGYkG+szR6RAWUFE+r/wCrC3OlNFdGHY6wSgmVd2zWTpw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738322717; c=relaxed/simple; bh=G64rfImpbF1FYzyYP/gR8hcx9nPoEHeOmwT4HxZwJJs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To; b=Z5QXwmQKl4xvSZo8dekUIVBGU3wSf2AL2/KiirldcZJzoeAinujdS4NnLEfncRrr1EsChAV34rNdxZbRysMMT1s8td/c93pPLc2Vpe76ebnAvETMkV6zRsW7lzfna2kHc5v+3L8eo9DoI5VT1gw+Z9tdtakQ85tF+Md9DadXhQU= 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 05750497; Fri, 31 Jan 2025 03:25:41 -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 D52813F63F; Fri, 31 Jan 2025 03:25:14 -0800 (PST) From: Sudeep Holla Date: Fri, 31 Jan 2025 11:24:09 +0000 Subject: [PATCH v2 09/18] 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: <20250131-ffa_updates-v2-9-544ba4e35387@arm.com> References: <20250131-ffa_updates-v2-0-544ba4e35387@arm.com> In-Reply-To: <20250131-ffa_updates-v2-0-544ba4e35387@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=1461; i=sudeep.holla@arm.com; h=from:subject:message-id; bh=G64rfImpbF1FYzyYP/gR8hcx9nPoEHeOmwT4HxZwJJs=; b=owEBbQKS/ZANAwAIAQBBurwxfuKYAcsmYgBnnLMQBBTTtnffuet9l2+whZjxfNSeTSb6KoWvk SGzsRKCtBmJAjMEAAEIAB0WIQS6ceUSBvMeskPdk+EAQbq8MX7imAUCZ5yzEAAKCRAAQbq8MX7i mNdTEACWqF8ZwLi5yHJXwb/LhPoAIwDMgMqpsuz7af0FGXblGxFVhmRdTUjmSmrlfDQ3W93QAaT qveCYsxwY3uAkbIgnY058DM+rvVB9AJlGN0Dgvtzv/DaP4dUtqWaAsinTXf5iL2TdkbrwKR2byt 05gsqi3AzLjII1yiJz7jGIrbxyXrth6vPZicD3jQOxTdhCPMXcQ9EoYzKFbfd4nZOZrUmzq18d5 SDtcS2eiD4di8Kj2GS74U7vH0rlhYsgzWfS/yKM6szVYR4iuFIHc/w2I9+Kx2YTU5S3Uc8jgX2v H8ejmruD60cUqCcHPfhheFR+UqA09XaPu6cbqKa3bIP5DSug5v43C28uHJNJtVnzB09WL4XHw9D RCh+Rr7fNLrZaTEYjathiL7D6mY8PphFgV2qL2p0e9jVJoRZBIiRTauud3qVCGf18zsfaJCqtvd ttqaoUivbbsFFAmZ5CaZ6smW4aIKYqU3lDFzzu62Yk9LKUcZBgXTjpU1Q4/Xm2x81KeOYTvWeHf CGeKR8HWqdyWfnc6Bgh/hIwutjOtm8/rRzblmMfDLb4LAUlFU2r9MXJBBXHtLCYRKW7RfE4aN0l aPsdSIRqoptUu2RNHmkMAk81pQkoMk9kSdIf3P41edlECtKb0VEubvd3lL5I7YXYnpb1sid4MrA QC06iw8whIcVtwg== 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. 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