From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3024BA04BA; Wed, 7 Oct 2020 18:32:33 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 475941B7FA; Wed, 7 Oct 2020 18:31:49 +0200 (CEST) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id D64E41B9DC for ; Wed, 7 Oct 2020 18:31:44 +0200 (CEST) IronPort-SDR: 5ahc6IrTxXnSPqbkGKZTMSM3cCzNiaZPbBoy7s+WC7b3fcvZWQpL20gP4nXdqJL5YNspBrBihO +6ngNOdxFYFw== X-IronPort-AV: E=McAfee;i="6000,8403,9767"; a="249724482" X-IronPort-AV: E=Sophos;i="5.77,347,1596524400"; d="scan'208";a="249724482" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2020 09:31:23 -0700 IronPort-SDR: vHSPas90B876h6ZspF/mn9IBBqjN6tl5e7OpF2BB39j6WJ8x1AWAUDK6Yo/S4rEkWQgfrQeXBy xotfIPvc4S7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,347,1596524400"; d="scan'208";a="354965984" Received: from silpixa00399126.ir.intel.com ([10.237.222.4]) by orsmga007.jf.intel.com with ESMTP; 07 Oct 2020 09:31:21 -0700 From: Bruce Richardson To: dev@dpdk.org Cc: patrick.fu@intel.com, thomas@monjalon.net, Bruce Richardson , Kevin Laatz , Radu Nicolau Date: Wed, 7 Oct 2020 17:30:16 +0100 Message-Id: <20201007163023.2817-19-bruce.richardson@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201007163023.2817-1-bruce.richardson@intel.com> References: <20200721095140.719297-1-bruce.richardson@intel.com> <20201007163023.2817-1-bruce.richardson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v5 18/25] raw/ioat: add start and stop functions for idxd devices X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add the start and stop functions for DSA hardware devices using the vfio/uio kernel drivers. For vdevs using the idxd kernel driver, the device must be started using sysfs before the device node appears for vdev use - making start/stop functions in the driver unnecessary. Signed-off-by: Bruce Richardson Reviewed-by: Kevin Laatz Acked-by: Radu Nicolau --- drivers/raw/ioat/idxd_pci.c | 50 +++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/raw/ioat/idxd_pci.c b/drivers/raw/ioat/idxd_pci.c index b173c5ae3..6b5c47392 100644 --- a/drivers/raw/ioat/idxd_pci.c +++ b/drivers/raw/ioat/idxd_pci.c @@ -51,11 +51,61 @@ idxd_is_wq_enabled(struct idxd_rawdev *idxd) return ((state >> WQ_STATE_SHIFT) & WQ_STATE_MASK) == 0x1; } +static void +idxd_pci_dev_stop(struct rte_rawdev *dev) +{ + struct idxd_rawdev *idxd = dev->dev_private; + uint8_t err_code; + + if (!idxd_is_wq_enabled(idxd)) { + IOAT_PMD_ERR("Work queue %d already disabled", idxd->qid); + return; + } + + err_code = idxd_pci_dev_command(idxd, idxd_disable_wq); + if (err_code || idxd_is_wq_enabled(idxd)) { + IOAT_PMD_ERR("Failed disabling work queue %d, error code: %#x", + idxd->qid, err_code); + return; + } + IOAT_PMD_DEBUG("Work queue %d disabled OK", idxd->qid); +} + +static int +idxd_pci_dev_start(struct rte_rawdev *dev) +{ + struct idxd_rawdev *idxd = dev->dev_private; + uint8_t err_code; + + if (idxd_is_wq_enabled(idxd)) { + IOAT_PMD_WARN("WQ %d already enabled", idxd->qid); + return 0; + } + + if (idxd->public.batch_ring == NULL) { + IOAT_PMD_ERR("WQ %d has not been fully configured", idxd->qid); + return -EINVAL; + } + + err_code = idxd_pci_dev_command(idxd, idxd_enable_wq); + if (err_code || !idxd_is_wq_enabled(idxd)) { + IOAT_PMD_ERR("Failed enabling work queue %d, error code: %#x", + idxd->qid, err_code); + return err_code == 0 ? -1 : err_code; + } + + IOAT_PMD_DEBUG("Work queue %d enabled OK", idxd->qid); + + return 0; +} + static const struct rte_rawdev_ops idxd_pci_ops = { .dev_close = idxd_rawdev_close, .dev_selftest = idxd_rawdev_test, .dump = idxd_dev_dump, .dev_configure = idxd_dev_configure, + .dev_start = idxd_pci_dev_start, + .dev_stop = idxd_pci_dev_stop, }; /* each portal uses 4 x 4k pages */ -- 2.25.1