From mboxrd@z Thu Jan 1 00:00:00 1970 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 DD784C433EF for ; Mon, 24 Jan 2022 16:02:12 +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:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1vuPHSjOe+4eAwQEcesLY+Wa7EOw2wMiJe0OhHdI7Mw=; b=XWuA3Mh/hIv0QplqcXeMT38HyL lEDcG0pCvovXD61kryH9bpuJgdpAd+QUCYnE1pWU6Gp8GyuhoYqY83EztQfe4dH/d2VHOV+aLZWW4 jfzoHqSynCdzzeZfdRhKJMK4HiAtVk385wPzhRTxZPgPShUcn3r79yIUQNPzgwqxBBpJc0kDU7h9U Fh+kdrIO/8yVOQdsBjhWj0wLdmA7gG1Dp/V+d8GpSrhS6GBQi0eqyCGmBg8XOsejoXIYzi+6/SQJm gFZC8Py4EiGaCnq7kZx7KHq0lwwkjdAgaa4xSYMo8Q5Vdr+h0A4Mvv1ERGXuADg6JaHrUYBUf+J84 45DdASQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC1nF-003tOX-4b; Mon, 24 Jan 2022 16:02:09 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC1mN-003t1w-HZ for linux-nvme@lists.infradead.org; Mon, 24 Jan 2022 16:01:17 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id DCBC4614DD; Mon, 24 Jan 2022 16:01:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0FA25C340E7; Mon, 24 Jan 2022 16:01:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643040074; bh=waUMKxOwOX7w/rUT+A2WgjAk79dSTHbN24muCUOw6W0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bezbq5R5pHJsZl3GebLs3aNaqcDKjTd0HyVtc87lJC68avnZgEHV0dCuzzusQ4Dq9 EB+Nnw/8MMqDUYhLnyZAGyY8TMiVtY0en9T0PCQiJsvzI1jXXDFy5I95SMCzEYnYoN rp4fOLQrJaS2FbvwVGdVnpIDqVH/jka4dvEXjz2VQ3wnfm4UYFrRkv25NXxulWes09 q2snLSzNedTqLVB6X1Zi7rIOvZS4G8EyUKorFV7Wgokk+U5Acd1dZWHi4HaT6XU+pN 3Kp7tzWh6E7BmNYqP5vRuBwU1Tv8dbJI+ekH3nhKZNrq/odBrDTd7bCNHIzAjoa5pk Qq6h5MSnaXUGQ== From: Keith Busch To: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Cc: axboe@kernel.dk, hch@lst.de, martin.petersen@oracle.com, colyli@suse.de, arnd@arndb.de, Keith Busch Subject: [RFC 5/7] asm-generic: introduce be48 unaligned accessors Date: Mon, 24 Jan 2022 08:01:05 -0800 Message-Id: <20220124160107.1683901-6-kbusch@kernel.org> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20220124160107.1683901-1-kbusch@kernel.org> References: <20220124160107.1683901-1-kbusch@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220124_080115_645247_8838D1CF X-CRM114-Status: GOOD ( 10.55 ) X-BeenThere: linux-nvme@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-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org The NVMe protocol extended data integrity fields with unaligned 48-bit reference tags. Provide some helper accessors in preparation for these. Cc: Arnd Bergmann Signed-off-by: Keith Busch --- include/asm-generic/unaligned.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h index 1c4242416c9f..8fc637379899 100644 --- a/include/asm-generic/unaligned.h +++ b/include/asm-generic/unaligned.h @@ -126,4 +126,30 @@ static inline void put_unaligned_le24(const u32 val, void *p) __put_unaligned_le24(val, p); } +static inline void __put_unaligned_be48(const u64 val, __u8 *p) +{ + *p++ = val >> 40; + *p++ = val >> 32; + *p++ = val >> 24; + *p++ = val >> 16; + *p++ = val >> 8; + *p++ = val; +} + +static inline void put_unaligned_be48(const u64 val, void *p) +{ + __put_unaligned_be48(val, p); +} + +static inline u64 __get_unaligned_be48(const u8 *p) +{ + return (u64)p[0] << 40 | (u64)p[1] << 32 | p[2] << 24 | + p[3] << 16 | p[4] << 8 | p[5]; +} + +static inline u64 get_unaligned_be48(const void *p) +{ + return __get_unaligned_be48(p); +} + #endif /* __ASM_GENERIC_UNALIGNED_H */ -- 2.25.4