From patchwork Thu Feb 11 15:58:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geetha sowjanya X-Patchwork-Id: 382326 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A5A0C433DB for ; Thu, 11 Feb 2021 16:08:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E6B364E7A for ; Thu, 11 Feb 2021 16:08:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231461AbhBKQHP (ORCPT ); Thu, 11 Feb 2021 11:07:15 -0500 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:18062 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231648AbhBKQAP (ORCPT ); Thu, 11 Feb 2021 11:00:15 -0500 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 11BFuZWr009103; Thu, 11 Feb 2021 07:59:31 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0220; bh=6an0RRiXo8nxjcuglL7D7DUvShKymRcqpRqdiEmPjPM=; b=HX4sZwjd/E+0hOe62QWjZvCg2H+Jx45TIkNvKn+is0Cn+0BSuW23vV8JKO4iJj2M4Yg8 PZUCzw9E6ZsJ/0yehecyXYy6D8/01X3Qmn8YW7s43iEkYISeS2NNYSuUGtMnNLDVZ01+ iTUVMwKX8rAGq8fck4QgiDMD6w5P26FlhySJm1j/aQzoQJKNNJIbUF4suTv7hV3JZms/ ndwwl6Lc7fD0Yhg6yBVS9Bt/DSgAPhKIQ4BvloIY7/yMVK0y0MsJxxNQr7Pfl830B81F DI/+qfp9huvMKOI123mG/NkUnP2+dmV1KF8H+oiWvSPf+ZWzaan/fH7qYBUn5BssG+M4 +A== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0a-0016f401.pphosted.com with ESMTP id 36hsbrqjjg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Thu, 11 Feb 2021 07:59:31 -0800 Received: from SC-EXCH03.marvell.com (10.93.176.83) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 11 Feb 2021 07:59:30 -0800 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 11 Feb 2021 07:59:29 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 11 Feb 2021 07:59:29 -0800 Received: from hyd1soter3.marvell.com (unknown [10.29.37.12]) by maili.marvell.com (Postfix) with ESMTP id ABDE63F703F; Thu, 11 Feb 2021 07:59:25 -0800 (PST) From: Geetha sowjanya To: , , CC: , , , , , , , , , , Geetha sowjanya Subject: [net-next v6 06/14] octeontx2-pf: cn10k: Map LMTST region Date: Thu, 11 Feb 2021 21:28:26 +0530 Message-ID: <20210211155834.31874-7-gakula@marvell.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210211155834.31874-1-gakula@marvell.com> References: <20210211155834.31874-1-gakula@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.737 definitions=2021-02-11_07:2021-02-11,2021-02-11 signatures=0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On CN10K platform transmit/receive buffer alloc and free from/to hardware had changed to support burst operation. Whereas pervious silicon's only support single buffer free at a time. To Support the same firmware allocates a DRAM region for each PF/VF for storing LMTLINES. These LMTLINES are used for NPA batch free and for flushing SQE to the hardware. PF/VF LMTST region is accessed via BAR4. PFs LMTST region is followed by its VFs mbox memory. The size of region varies from 2KB to 256KB based on number of LMTLINES configured. This patch adds support for - Mapping PF/VF LMTST region. - Reserves 0-71 (RX + TX + XDP) LMTST lines for NPA batch free operation. - Reserves 72-512 LMTST lines for NIX SQE flush. Signed-off-by: Geetha sowjanya Signed-off-by: Sunil Goutham --- .../marvell/octeontx2/nic/otx2_common.h | 15 +++++- .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 52 ++++++++++++++++++- .../ethernet/marvell/octeontx2/nic/otx2_vf.c | 37 ++++++++++++- 3 files changed, 100 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h index 3542f2d6c698..9ac9b420dd95 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h @@ -209,7 +209,14 @@ struct otx2_hw { u8 lbk_links; /* No. of LBK links present in HW */ #define HW_TSO BIT_ULL(0) #define CN10K_MBOX BIT_ULL(1) +#define CN10K_LMTST BIT_ULL(2) unsigned long cap_flag; + +#define LMT_LINE_SIZE 128 +#define NIX_LMTID_BASE 72 /* RX + TX + XDP */ + void __iomem *lmt_base; + u64 *npa_lmt_base; + u64 *nix_lmt_base; }; struct otx2_vf_config { @@ -319,6 +326,10 @@ struct otx2_nic { /* Block address of NIX either BLKADDR_NIX0 or BLKADDR_NIX1 */ int nix_blkaddr; + /* LMTST Lines info */ + u16 tot_lmt_lines; + u16 nix_lmt_lines; + u32 nix_lmt_size; struct otx2_ptp *ptp; struct hwtstamp_config tstamp; @@ -384,8 +395,10 @@ static inline void otx2_setup_dev_hw_settings(struct otx2_nic *pfvf) pfvf->hw.rq_skid = 600; pfvf->qset.rqe_cnt = Q_COUNT(Q_SIZE_1K); } - if (!is_dev_otx2(pfvf->pdev)) + if (!is_dev_otx2(pfvf->pdev)) { __set_bit(CN10K_MBOX, &hw->cap_flag); + __set_bit(CN10K_LMTST, &hw->cap_flag); + } } /* Register read/write APIs */ diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index e46d0d1c5782..afafaec88c8b 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -46,6 +46,39 @@ enum { static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable); static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable); +static int cn10k_lmtst_init(struct otx2_nic *pf) +{ + int size, num_lines; + u64 base; + + if (!test_bit(CN10K_LMTST, &pf->hw.cap_flag)) + return 0; + + base = pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM) + + (MBOX_SIZE * (pf->total_vfs + 1)); + + size = pci_resource_len(pf->pdev, PCI_MBOX_BAR_NUM) - + (MBOX_SIZE * (pf->total_vfs + 1)); + + pf->hw.lmt_base = ioremap(base, size); + + if (!pf->hw.lmt_base) { + dev_err(pf->dev, "Unable to map PF LMTST region\n"); + return -ENOMEM; + } + + /* FIXME: Get the num of LMTST lines from LMT table */ + pf->tot_lmt_lines = size / LMT_LINE_SIZE; + num_lines = (pf->tot_lmt_lines - NIX_LMTID_BASE) / + pf->hw.tx_queues; + /* Number of LMT lines per SQ queues */ + pf->nix_lmt_lines = num_lines > 32 ? 32 : num_lines; + + pf->nix_lmt_size = pf->nix_lmt_lines * LMT_LINE_SIZE; + + return 0; +} + static int otx2_change_mtu(struct net_device *netdev, int new_mtu) { bool if_up = netif_running(netdev); @@ -1498,6 +1531,14 @@ int otx2_open(struct net_device *netdev) if (!qset->rq) goto err_free_mem; + if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) { + /* Reserve LMT lines for NPA AURA batch free */ + pf->hw.npa_lmt_base = (__force u64 *)pf->hw.lmt_base; + /* Reserve LMT lines for NIX TX */ + pf->hw.nix_lmt_base = (__force u64 *)((u64)pf->hw.npa_lmt_base + + (NIX_LMTID_BASE * LMT_LINE_SIZE)); + } + err = otx2_init_hw_resources(pf); if (err) goto err_free_mem; @@ -2336,6 +2377,8 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_free_netdev; } + otx2_setup_dev_hw_settings(pf); + /* Init PF <=> AF mailbox stuff */ err = otx2_pfaf_mbox_init(pf); if (err) @@ -2361,7 +2404,9 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (err) goto err_detach_rsrc; - otx2_setup_dev_hw_settings(pf); + err = cn10k_lmtst_init(pf); + if (err) + goto err_detach_rsrc; /* Assign default mac address */ otx2_get_mac_from_af(netdev); @@ -2446,6 +2491,8 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) err_ptp_destroy: otx2_ptp_destroy(pf); err_detach_rsrc: + if (hw->lmt_base) + iounmap(hw->lmt_base); otx2_detach_resources(&pf->mbox); err_disable_mbox_intr: otx2_disable_mbox_intr(pf); @@ -2605,6 +2652,9 @@ static void otx2_remove(struct pci_dev *pdev) otx2_ptp_destroy(pf); otx2_mcam_flow_del(pf); otx2_detach_resources(&pf->mbox); + if (pf->hw.lmt_base) + iounmap(pf->hw.lmt_base); + otx2_disable_mbox_intr(pf); otx2_pfaf_mbox_destroy(pf); pci_free_irq_vectors(pf->pdev); diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c index e7d8fef4f53d..9ed850b75d59 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c @@ -27,6 +27,31 @@ enum { RVU_VF_INT_VEC_MBOX = 0x0, }; +static int cn10k_lmtst_init(struct otx2_nic *vf) +{ + int size, num_lines; + + if (!test_bit(CN10K_LMTST, &vf->hw.cap_flag)) + return 0; + + size = pci_resource_len(vf->pdev, PCI_MBOX_BAR_NUM); + vf->hw.lmt_base = ioremap_wc(pci_resource_start(vf->pdev, + PCI_MBOX_BAR_NUM), + size); + if (!vf->hw.lmt_base) { + dev_err(vf->dev, "Unable to map VF LMTST region\n"); + return -ENOMEM; + } + + vf->tot_lmt_lines = size / LMT_LINE_SIZE; + /* LMTST lines per SQ */ + num_lines = (vf->tot_lmt_lines - NIX_LMTID_BASE) / + vf->hw.tx_queues; + vf->nix_lmt_lines = num_lines > 32 ? 32 : num_lines; + vf->nix_lmt_size = vf->nix_lmt_lines * LMT_LINE_SIZE; + return 0; +} + static void otx2vf_process_vfaf_mbox_msg(struct otx2_nic *vf, struct mbox_msghdr *msg) { @@ -536,6 +561,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_free_irq_vectors; } + otx2_setup_dev_hw_settings(vf); /* Init VF <=> PF mailbox stuff */ err = otx2vf_vfaf_mbox_init(vf); if (err) @@ -559,7 +585,9 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (err) goto err_detach_rsrc; - otx2_setup_dev_hw_settings(vf); + err = cn10k_lmtst_init(vf); + if (err) + goto err_detach_rsrc; /* Assign default mac address */ otx2_get_mac_from_af(netdev); @@ -611,6 +639,8 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id) return 0; err_detach_rsrc: + if (hw->lmt_base) + iounmap(hw->lmt_base); otx2_detach_resources(&vf->mbox); err_disable_mbox_intr: otx2vf_disable_mbox_intr(vf); @@ -639,8 +669,11 @@ static void otx2vf_remove(struct pci_dev *pdev) cancel_work_sync(&vf->reset_task); unregister_netdev(netdev); otx2vf_disable_mbox_intr(vf); - otx2_detach_resources(&vf->mbox); + + if (vf->hw.lmt_base) + iounmap(vf->hw.lmt_base); + otx2vf_vfaf_mbox_destroy(vf); pci_free_irq_vectors(vf->pdev); pci_set_drvdata(pdev, NULL);