From patchwork Wed Oct 9 19:25:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Logan Gunthorpe X-Patchwork-Id: 11181981 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DC5A81864 for ; Wed, 9 Oct 2019 19:26:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C80FF21D7D for ; Wed, 9 Oct 2019 19:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732076AbfJITZ4 (ORCPT ); Wed, 9 Oct 2019 15:25:56 -0400 Received: from ale.deltatee.com ([207.54.116.67]:37728 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732034AbfJITZs (ORCPT ); Wed, 9 Oct 2019 15:25:48 -0400 Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iIHaa-0002g2-6l; Wed, 09 Oct 2019 13:25:46 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1iIHaY-0003Py-7i; Wed, 09 Oct 2019 13:25:34 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: Christoph Hellwig , Sagi Grimberg , Keith Busch , Jens Axboe , Chaitanya Kulkarni , Max Gurtovoy , Stephen Bates , Chaitanya Kulkarni , Logan Gunthorpe Date: Wed, 9 Oct 2019 13:25:19 -0600 Message-Id: <20191009192530.13079-3-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191009192530.13079-1-logang@deltatee.com> References: <20191009192530.13079-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, hch@lst.de, sagi@grimberg.me, kbusch@kernel.org, axboe@fb.com, maxg@mellanox.com, sbates@raithlin.com, Chaitanya.Kulkarni@wdc.com, chaitanya.kulkarni@wdc.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on ale.deltatee.com X-Spam-Level: X-Spam-Status: No, score=-8.5 required=5.0 tests=ALL_TRUSTED,BAYES_00, GREYLIST_ISWHITE,MYRULES_FREE,MYRULES_NO_TEXT autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v9 02/12] nvme-core: export existing ctrl and ns interfaces X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Chaitanya Kulkarni We export existing nvme ctrl and ns management APIs so that target passthru code can manage the nvme ctrl. This is a preparation patch for implementing NVMe Over Fabric target passthru feature. Signed-off-by: Chaitanya Kulkarni Signed-off-by: Logan Gunthorpe Reviewed-by: Sagi Grimberg Reviewed-by: Keith Busch --- drivers/nvme/host/core.c | 19 ++++++++++++------- drivers/nvme/host/nvme.h | 7 +++++++ 2 files changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 30f9d91e25e3..c6303493a5b7 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -422,10 +422,11 @@ static void nvme_free_ns(struct kref *kref) kfree(ns); } -static void nvme_put_ns(struct nvme_ns *ns) +void nvme_put_ns(struct nvme_ns *ns) { kref_put(&ns->kref, nvme_free_ns); } +EXPORT_SYMBOL_GPL(nvme_put_ns); static inline void nvme_clear_nvme_request(struct request *req) { @@ -1089,7 +1090,7 @@ static int nvme_identify_ns_list(struct nvme_ctrl *dev, unsigned nsid, __le32 *n NVME_IDENTIFY_DATA_SIZE); } -static int nvme_identify_ns(struct nvme_ctrl *ctrl, +int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid, struct nvme_id_ns **id) { struct nvme_command c = { }; @@ -1112,6 +1113,7 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, return error; } +EXPORT_SYMBOL_GPL(nvme_identify_ns); static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid, unsigned int dword11, void *buffer, size_t buflen, u32 *result) @@ -1263,8 +1265,8 @@ static u32 nvme_known_admin_effects(u8 opcode) return 0; } -static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, - u8 opcode) +u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, + u8 opcode) { u32 effects = 0; @@ -1296,6 +1298,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, } return effects; } +EXPORT_SYMBOL_GPL(nvme_passthru_start); static void nvme_update_formats(struct nvme_ctrl *ctrl) { @@ -1310,7 +1313,7 @@ static void nvme_update_formats(struct nvme_ctrl *ctrl) nvme_remove_invalid_namespaces(ctrl, NVME_NSID_ALL); } -static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects) +void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects) { /* * Revalidate LBA changes prior to unfreezing. This is necessary to @@ -1330,6 +1333,7 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects) if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC)) nvme_queue_scan(ctrl); } +EXPORT_SYMBOL_GPL(nvme_passthru_end); static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns, struct nvme_passthru_cmd __user *ucmd) @@ -2844,7 +2848,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl) ret = nvme_configure_apst(ctrl); if (ret < 0) return ret; - + ret = nvme_configure_timestamp(ctrl); if (ret < 0) return ret; @@ -3411,7 +3415,7 @@ static int ns_cmp(void *priv, struct list_head *a, struct list_head *b) return nsa->head->ns_id - nsb->head->ns_id; } -static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid) +struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid) { struct nvme_ns *ns, *ret = NULL; @@ -3429,6 +3433,7 @@ static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid) up_read(&ctrl->namespaces_rwsem); return ret; } +EXPORT_SYMBOL_GPL(nvme_find_get_ns); static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns) { diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index f83f990e409d..31f42610e9bb 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -459,6 +459,8 @@ void nvme_start_ctrl(struct nvme_ctrl *ctrl); void nvme_stop_ctrl(struct nvme_ctrl *ctrl); void nvme_put_ctrl(struct nvme_ctrl *ctrl); int nvme_init_identify(struct nvme_ctrl *ctrl); +struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned int nsid); +void nvme_put_ns(struct nvme_ns *ns); void nvme_remove_namespaces(struct nvme_ctrl *ctrl); @@ -495,8 +497,13 @@ int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid, int nvme_get_features(struct nvme_ctrl *dev, unsigned int fid, unsigned int dword11, void *buffer, size_t buflen, u32 *result); +u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, + u8 opcode); +void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects); int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count); void nvme_stop_keep_alive(struct nvme_ctrl *ctrl); +int nvme_identify_ns(struct nvme_ctrl *ctrl, + unsigned nsid, struct nvme_id_ns **id); int nvme_reset_ctrl(struct nvme_ctrl *ctrl); int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl); int nvme_delete_ctrl(struct nvme_ctrl *ctrl);