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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F5BDC4332F for ; Mon, 24 Jan 2022 16:01:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243331AbiAXQBS (ORCPT ); Mon, 24 Jan 2022 11:01:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243292AbiAXQBQ (ORCPT ); Mon, 24 Jan 2022 11:01:16 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EACA6C06173B; Mon, 24 Jan 2022 08:01:15 -0800 (PST) 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 848D6614DA; Mon, 24 Jan 2022 16:01:15 +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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.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