From nobody Mon Feb 9 06:48:20 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CA24B1CAA89 for ; Fri, 31 Jan 2025 11:25:16 +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=1738322718; cv=none; b=rlxYbTfhR/MpaZJKBJJSQ6FMslSLfx5Kr49v56j5wGojr96dXnz26vGTFCmnjca+kkCFFAicMVzLpdQkntOCJMkId9om1OoU8Nk3GPgXn8wQu7+uoUkKNDAnqKacbPgBc88n/d/f/r+6MLiBdT+57l6hs8f2DmAZrvz/ZoY+z5I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738322718; c=relaxed/simple; bh=Zj2TkPNqsSsa5DJ2pfRSYerk4zU4yhZyjFL52P7Ncog=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To; b=rJuQGqR04fgjspVgAGhwPsj0Oy3b68DoVW1ttUwABC3PLZC03aKjLiIHHZSJ0ok16BI5aJXCYe1y8zPe2IrnnUmCYOGNnIAs2wRLLmfqNkCRjnPmwbNqIup4Cj56uCQ3vKTYSP4ShH7RUuJLx8c792qzyHTQaOz6CUDRcnBX0HQ= 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 0BAA3FEC; Fri, 31 Jan 2025 03:25:42 -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 DB23D3F63F; Fri, 31 Jan 2025 03:25:15 -0800 (PST) From: Sudeep Holla Date: Fri, 31 Jan 2025 11:24:10 +0000 Subject: [PATCH v2 10/18] firmware: arm_ffa: Add support for passing UUID in FFA_MSG_SEND2 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-v2-10-544ba4e35387@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=2268; i=sudeep.holla@arm.com; h=from:subject:message-id; bh=Zj2TkPNqsSsa5DJ2pfRSYerk4zU4yhZyjFL52P7Ncog=; b=owEBbQKS/ZANAwAIAQBBurwxfuKYAcsmYgBnnLMQKXoFWtleYV0WN6Euu77keN8tM7DdVu/7Z ISUrF9h052JAjMEAAEIAB0WIQS6ceUSBvMeskPdk+EAQbq8MX7imAUCZ5yzEAAKCRAAQbq8MX7i mH7zD/4387ZIYz9YjJT4e7WGpbXh/Y3Pz6EFuvhCwZTbqZH5JYwGEgbu6SZnugGnjd0L20Rnlo/ ZcWxfYWHy6j8m3urj1cczv6nw7yagMVL8YUGC34f9ZDC8u77kvwgUw4UQDOgo4H1yxxJFDlhDwD b/3dvPCzKaxwb9tyOtsgKEdxMbD3EJ4d9Rhma9Kqko9BZk2RyhNG6ewzp7VdOxv4fGWA2RwjbFE 4LOnWyhpvjwUjLdT+96HsTJvXUprCmmPOZM3SMyLF1amYKG0KupF3W44MTbP62o4Ukox2taRues x8CFbUNR3nav/3Ozr7PCO7rEDplTS1bwyQtwdEgWUM32i+EaHft0SvNu8AYdwJD9R4KA7yquGfM fRf/uUiEnHdc3Xeex2ONaWaGdeR7YBW/c6NKXpbH4ElW0x0625y29/2c+I0PNMIQdaeJN0YXpeP n5iZsCfxh8IBHe7OEWTi9fcB1ALsw+Qn6mcd3Xs4IY0AUhxPKD+g/oWPFjrhPbuZtqu5W0nCv0N 7oTlM61I2LJPeUtxqN0mlWlDU2AfNqVqZHDUvX1we6RxwfPq4C7DATD0a/BMQrR7OUR/u+lNh/Q 6jBuDpGLzlYsCmS/fqu95HWmfqypzg47lwH4zkOdaew3hnt7CMNY76u5Ta343jRWJ4u1ZaA0G6+ ARJiK7NSKFaNNNg== X-Developer-Key: i=sudeep.holla@arm.com; a=openpgp; fpr=7360A21742ADF5A11767C1C139CFD4755FE2D5B4 FF-A v1.2 introduces UUID field in partition message header used in FFA_MSG_SEND2 to enable partitions/endpoints exposing multiple UUIDs. Add the support for passing UUID in FFA_MSG_SEND2. Signed-off-by: Sudeep Holla --- drivers/firmware/arm_ffa/driver.c | 7 ++++--- include/linux/arm_ffa.h | 1 + 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/d= river.c index 1df1c28978a5e70c31d5136e43033635c515e261..cbe0fe5f22bd8c60f3070f5e45d= 8722e3c9c23c8 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -484,9 +484,9 @@ static int ffa_msg_send_direct_req(u16 src_id, u16 dst_= id, bool mode_32bit, return -EINVAL; } =20 -static int ffa_msg_send2(u16 src_id, u16 dst_id, void *buf, size_t sz) +static int ffa_msg_send2(struct ffa_device *dev, u16 src_id, void *buf, si= ze_t sz) { - u32 src_dst_ids =3D PACK_TARGET_INFO(src_id, dst_id); + u32 src_dst_ids =3D PACK_TARGET_INFO(src_id, dev->vm_id); struct ffa_indirect_msg_hdr *msg; ffa_value_t ret; int retval =3D 0; @@ -502,6 +502,7 @@ static int ffa_msg_send2(u16 src_id, u16 dst_id, void *= buf, size_t sz) msg->offset =3D sizeof(*msg); msg->send_recv_id =3D src_dst_ids; msg->size =3D sz; + uuid_copy(&msg->uuid, &dev->uuid); memcpy((u8 *)msg + msg->offset, buf, sz); =20 /* flags =3D 0, sender VMID =3D 0 works for both physical/virtual NS */ @@ -1054,7 +1055,7 @@ static int ffa_sync_send_receive(struct ffa_device *d= ev, =20 static int ffa_indirect_msg_send(struct ffa_device *dev, void *buf, size_t= sz) { - return ffa_msg_send2(drv_info->vm_id, dev->vm_id, buf, sz); + return ffa_msg_send2(dev, drv_info->vm_id, buf, sz); } =20 static int ffa_sync_send_receive2(struct ffa_device *dev, diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h index 761ea8fe3bb6080c893a5eb365358b62d6a4f3ff..bd78deeff284e2f46d42cfc7af2= 18f4a0f3d1478 100644 --- a/include/linux/arm_ffa.h +++ b/include/linux/arm_ffa.h @@ -282,6 +282,7 @@ struct ffa_indirect_msg_hdr { u32 offset; u32 send_recv_id; u32 size; + uuid_t uuid; }; =20 /* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP}2 which pass data via regist= ers */ --=20 2.34.1