From patchwork Mon Jun 6 21:20:47 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9159263 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B1C4860777 for ; Mon, 6 Jun 2016 21:28:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A47DE25E13 for ; Mon, 6 Jun 2016 21:28:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 997A528335; Mon, 6 Jun 2016 21:28:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, URIBL_BLACK autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 20ED525E13 for ; Mon, 6 Jun 2016 21:28:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932167AbcFFVVY (ORCPT ); Mon, 6 Jun 2016 17:21:24 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:39798 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932099AbcFFVVV (ORCPT ); Mon, 6 Jun 2016 17:21:21 -0400 Received: from 178.115.129.250.wireless.dyn.drei.com ([178.115.129.250] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1bA1xX-0004Fv-Pj; Mon, 06 Jun 2016 21:21:20 +0000 From: Christoph Hellwig To: axboe@kernel.dk, keith.busch@intel.com Cc: linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, James Smart Subject: [PATCH 05/10] nvme.h: add constants for PSDT and FUSE values Date: Mon, 6 Jun 2016 23:20:47 +0200 Message-Id: <1465248052-17811-6-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1465248052-17811-1-git-send-email-hch@lst.de> References: <1465248052-17811-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: James Smart Signed-off-by: James Smart Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig --- include/linux/nvme.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/nvme.h b/include/linux/nvme.h index a9b8c7b..2b82f05 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -306,6 +306,29 @@ enum nvme_opcode { nvme_cmd_resv_release = 0x15, }; +/* + * Lowest two bits of our flags field (FUSE field in the spec): + * + * @NVME_CMD_FUSE_FIRST: Fused Operation, first command + * @NVME_CMD_FUSE_SECOND: Fused Operation, second command + * + * Highest two bits in our flags field (PSDT field in the spec): + * + * @NVME_CMD_PSDT_SGL_METABUF: Use SGLS for this transfer, + * If used, MPTR contains addr of single physical buffer (byte aligned). + * @NVME_CMD_PSDT_SGL_METASEG: Use SGLS for this transfer, + * If used, MPTR contains an address of an SGL segment containing + * exactly 1 SGL descriptor (qword aligned). + */ +enum { + NVME_CMD_FUSE_FIRST = (1 << 0), + NVME_CMD_FUSE_SECOND = (1 << 1), + + NVME_CMD_SGL_METABUF = (1 << 6), + NVME_CMD_SGL_METASEG = (1 << 7), + NVME_CMD_SGL_ALL = NVME_CMD_SGL_METABUF | NVME_CMD_SGL_METASEG, +}; + struct nvme_common_command { __u8 opcode; __u8 flags;