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 DACC7A04B5; Fri, 2 Oct 2020 16:14:21 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 1C41F1D945; Fri, 2 Oct 2020 16:12:30 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 6F4D11D15A for ; Fri, 2 Oct 2020 16:12:21 +0200 (CEST) IronPort-SDR: CsJJmkIxeN6ZPxM2YKVIw1Jxj/5g+6y4uJnrgf3AcG9PUVDQ8aFj6Aag0cZC8t1998MgMWlwgl c0J7gIDcw7bw== X-IronPort-AV: E=McAfee;i="6000,8403,9761"; a="163088584" X-IronPort-AV: E=Sophos;i="5.77,327,1596524400"; d="scan'208";a="163088584" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Oct 2020 07:12:18 -0700 IronPort-SDR: 1AmriXUoLhgummtRCG+zE0f3aBaTIyOsFALjFkpnfkJKz42D9KingYDDoTAFYrFVWfvf8PzhEc XoD8TFMeWS6A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,327,1596524400"; d="scan'208";a="309039838" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga003.jf.intel.com with ESMTP; 02 Oct 2020 07:12:16 -0700 Received: from sivswdev09.ir.intel.com (sivswdev09.ir.intel.com [10.237.217.48]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id 092ECFtF003772; Fri, 2 Oct 2020 15:12:15 +0100 Received: from sivswdev09.ir.intel.com (localhost [127.0.0.1]) by sivswdev09.ir.intel.com with ESMTP id 092ECFcS025476; Fri, 2 Oct 2020 15:12:15 +0100 Received: (from lma25@localhost) by sivswdev09.ir.intel.com with LOCAL id 092ECFfo025472; Fri, 2 Oct 2020 15:12:15 +0100 From: Liang Ma To: dev@dpdk.org Cc: david.hunt@intel.com, stephen@networkplumber.org, konstantin.ananyev@intel.com, Liang Ma , Anatoly Burakov Date: Fri, 2 Oct 2020 15:11:55 +0100 Message-Id: <1601647919-25312-6-git-send-email-liang.j.ma@intel.com> X-Mailer: git-send-email 1.7.7.4 In-Reply-To: <1601647919-25312-1-git-send-email-liang.j.ma@intel.com> References: <1599214740-3927-1-git-send-email-liang.j.ma@intel.com> <1601647919-25312-1-git-send-email-liang.j.ma@intel.com> Subject: [dpdk-dev] [PATCH v4 06/10] net/i40e: implement power management API 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" Implement support for the power management API by implementing a `get_wake_addr` function that will return an address of an RX ring's status bit. Signed-off-by: Liang Ma Signed-off-by: Anatoly Burakov --- drivers/net/i40e/i40e_ethdev.c | 1 + drivers/net/i40e/i40e_rxtx.c | 23 +++++++++++++++++++++++ drivers/net/i40e/i40e_rxtx.h | 2 ++ 3 files changed, 26 insertions(+) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 943cfe71dc..cab86f8ec9 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -513,6 +513,7 @@ static const struct eth_dev_ops i40e_eth_dev_ops = { .mtu_set = i40e_dev_mtu_set, .tm_ops_get = i40e_tm_ops_get, .tx_done_cleanup = i40e_tx_done_cleanup, + .get_wake_addr = i40e_get_wake_addr, }; /* store statistics names and its offset in stats structure */ diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index 322fc1ed75..c17f27292f 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -71,6 +71,29 @@ #define I40E_TX_OFFLOAD_NOTSUP_MASK \ (PKT_TX_OFFLOAD_MASK ^ I40E_TX_OFFLOAD_MASK) +int +i40e_get_wake_addr(void *rx_queue, volatile void **tail_desc_addr, + uint64_t *expected, uint64_t *mask) +{ + struct i40e_rx_queue *rxq = rx_queue; + volatile union i40e_rx_desc *rxdp; + uint16_t desc; + + desc = rxq->rx_tail; + rxdp = &rxq->rx_ring[desc]; + /* watch for changes in status bit */ + *tail_desc_addr = &rxdp->wb.qword1.status_error_len; + + /* + * we expect the DD bit to be set to 1 if this descriptor was already + * written to. + */ + *expected = rte_cpu_to_le_64(1 << I40E_RX_DESC_STATUS_DD_SHIFT); + *mask = rte_cpu_to_le_64(1 << I40E_RX_DESC_STATUS_DD_SHIFT); + + return 0; +} + static inline void i40e_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union i40e_rx_desc *rxdp) { diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h index 57d7b4160b..f23a2073e3 100644 --- a/drivers/net/i40e/i40e_rxtx.h +++ b/drivers/net/i40e/i40e_rxtx.h @@ -248,6 +248,8 @@ uint16_t i40e_recv_scattered_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); uint16_t i40e_xmit_pkts_vec_avx2(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); +int i40e_get_wake_addr(void *rx_queue, volatile void **tail_desc_addr, + uint64_t *expected, uint64_t *value); /* For each value it means, datasheet of hardware can tell more details * -- 2.17.1