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 553CDE7717F for ; Tue, 10 Dec 2024 09:38:11 +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=GE7yvKXwmwlHIMlF7PsXTMz+r1LSRLw5syeK3+A8IWI=; b=gLL7zRnrhPA4DV/b/e4bGeqPe8 DzSyoEg4R6S4aY2IX/HSocXVOSpdvyIM7XgH0Zpo5+b/KsuvOi0QHgfre1FS4ZMev/Efy+I1MfjAy upBsu4oIyNZSZJ11qhFKIfNECrbVcDm45mPKAn7ZVlAK5G7GWdv+euMndpSGJhzLPfr44DBT3OpIG iGpL+uL3RrzYKu3gjGzzXcSk7EVMc8EHs751RrBxKGVdsxoaI0xYobvk/+Jr+xf1xRJ8GlEz29ZsJ EwIOt4g6rkPe1aHlQmqN1DsVteohns2iQca3wWRjlQOlx5TvSJbShpzg9S4JJ4DpZHUFGJlq6n2ac NWuJaXeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tKwgz-0000000Avxz-1dAD; Tue, 10 Dec 2024 09:38:09 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tKwe5-0000000AuXo-0jHa for linux-nvme@lists.infradead.org; Tue, 10 Dec 2024 09:35:10 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 309A55C4A41; Tue, 10 Dec 2024 09:34:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81088C4CEE0; Tue, 10 Dec 2024 09:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733823308; bh=+X/wsRvpYMVsVg/DvYoWjCPmiVKTIhH2lSR7TbP6uFo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tpjo+xwAMfNlwoaAsDDi/PPROGYonpcPAyssqvdFbZlY14I+Uxkq3zpqj52EXT6j3 /pPY8LcHSIfQRtBt4gxFTudf+3r6amWUf3x2uHFzz8yW4zAETXjZ0oPcMtX9ALxXn/ uiqzt1UYkkCaK/wviApuTEISRjPp/u3UGvZt34mj8I9fRXzW3Ppe/NQRLth1zIEG+S sLXAhTKRY4Ph7g6hjEgAsQpgut1jEKWUZVglHe4NYNp2EYa1HHJIqj9P698NR7n/S0 V++YNTg+I8Fn8hPsrXXiW8fh4MjTNBxElZP1IvEQFg5J2IArecHU7hFPtlQyNQSs85 PryVhGbhJqoUg== From: Damien Le Moal To: linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch , Sagi Grimberg , linux-pci@vger.kernel.org, Manivannan Sadhasivam , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Bjorn Helgaas , Lorenzo Pieralisi Cc: Rick Wertenbroek , Niklas Cassel Subject: [PATCH v3 14/17] nvmet: Implement interrupt config feature support Date: Tue, 10 Dec 2024 18:34:05 +0900 Message-ID: <20241210093408.105867-15-dlemoal@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241210093408.105867-1-dlemoal@kernel.org> References: <20241210093408.105867-1-dlemoal@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-20241210_013509_294833_1140A95B X-CRM114-Status: GOOD ( 17.40 ) 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 base specifications v2.1 mandate supporting the interrupt config feature (NVME_FEAT_IRQ_CONFIG) for PCI controllers. Introduce the data structure struct nvmet_feat_irq_config to define the coalescing disabled (cd) and interrupt vector (iv) fields of this feature and implement the functions nvmet_get_feat_irq_config() and nvmet_set_feat_irq_config() functions to get and set these fields. These functions respectively use the controller get_feature() and set_feature() operations to fill and handle the fields of struct nvmet_feat_irq_config. Support for this feature is prohibited for fabrics controllers. If a get feature command or a set feature command for this feature is received for a fabrics controller, the command is failed with an invalid field error. Signed-off-by: Damien Le Moal --- drivers/nvme/target/admin-cmd.c | 54 +++++++++++++++++++++++++++++++-- drivers/nvme/target/nvmet.h | 5 +++ 2 files changed, 57 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index eff9fd2e81ed..8b8ec33330b2 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -1303,6 +1303,27 @@ static u16 nvmet_set_feat_irq_coalesce(struct nvmet_req *req) return ctrl->ops->set_feature(ctrl, NVME_FEAT_IRQ_COALESCE, &irqc); } +static u16 nvmet_set_feat_irq_config(struct nvmet_req *req) +{ + struct nvmet_ctrl *ctrl = req->sq->ctrl; + u32 cdw11 = le32_to_cpu(req->cmd->common.cdw11); + struct nvmet_feat_irq_config irqcfg = { + .iv = cdw11 & 0xffff, + .cd = (cdw11 >> 16) & 0x1, + }; + + /* + * This feature is not supported for fabrics controllers and mandatory + * for PCI controllers. + */ + if (!nvmet_is_pci_ctrl(ctrl)) { + req->error_loc = offsetof(struct nvme_common_command, cdw10); + return NVME_SC_INVALID_FIELD | NVME_STATUS_DNR; + } + + return ctrl->ops->set_feature(ctrl, NVME_FEAT_IRQ_CONFIG, &irqcfg); +} + void nvmet_execute_set_features(struct nvmet_req *req) { struct nvmet_subsys *subsys = nvmet_req_subsys(req); @@ -1329,6 +1350,9 @@ void nvmet_execute_set_features(struct nvmet_req *req) case NVME_FEAT_IRQ_COALESCE: status = nvmet_set_feat_irq_coalesce(req); break; + case NVME_FEAT_IRQ_CONFIG: + status = nvmet_set_feat_irq_config(req); + break; case NVME_FEAT_KATO: status = nvmet_set_feat_kato(req); break; @@ -1397,6 +1421,31 @@ static u16 nvmet_get_feat_irq_coalesce(struct nvmet_req *req) return NVME_SC_SUCCESS; } +static u16 nvmet_get_feat_irq_config(struct nvmet_req *req) +{ + struct nvmet_ctrl *ctrl = req->sq->ctrl; + u32 iv = le32_to_cpu(req->cmd->common.cdw11) & 0xffff; + struct nvmet_feat_irq_config irqcfg = { .iv = iv }; + u16 status; + + /* + * This feature is not supported for fabrics controllers and mandatory + * for PCI controllers. + */ + if (!nvmet_is_pci_ctrl(ctrl)) { + req->error_loc = offsetof(struct nvme_common_command, cdw10); + return NVME_SC_INVALID_FIELD | NVME_STATUS_DNR; + } + + status = ctrl->ops->get_feature(ctrl, NVME_FEAT_IRQ_CONFIG, &irqcfg); + if (status != NVME_SC_SUCCESS) + return status; + + nvmet_set_result(req, ((u32)irqcfg.cd << 16) | iv); + + return NVME_SC_SUCCESS; +} + void nvmet_get_feat_kato(struct nvmet_req *req) { nvmet_set_result(req, req->sq->ctrl->kato * 1000); @@ -1431,14 +1480,15 @@ void nvmet_execute_get_features(struct nvmet_req *req) break; case NVME_FEAT_ERR_RECOVERY: break; - case NVME_FEAT_IRQ_CONFIG: - break; case NVME_FEAT_WRITE_ATOMIC: break; #endif case NVME_FEAT_IRQ_COALESCE: status = nvmet_get_feat_irq_coalesce(req); break; + case NVME_FEAT_IRQ_CONFIG: + status = nvmet_get_feat_irq_config(req); + break; case NVME_FEAT_ASYNC_EVENT: nvmet_get_feat_async_event(req); break; diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 555c09b11dbe..999a4ebf597e 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -916,4 +916,9 @@ struct nvmet_feat_irq_coalesce { u8 time; }; +struct nvmet_feat_irq_config { + u16 iv; + bool cd; +}; + #endif /* _NVMET_H */ -- 2.47.1