From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932198AbcFFVVZ (ORCPT ); Mon, 6 Jun 2016 17:21:25 -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 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; -- 2.1.4