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 1AE81A04B5; Tue, 27 Oct 2020 16:02:36 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id ACD85A54B; Tue, 27 Oct 2020 16:00:08 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 6011BA54B for ; Tue, 27 Oct 2020 16:00:06 +0100 (CET) IronPort-SDR: ckM+rTVk6c4JMHMANFDfOtynT7FSGWBp6Je6hP/c1VRoki7yuDexgItbvz4a2aTo/J9XSPnJ0+ MyRPUnNKeJ5g== X-IronPort-AV: E=McAfee;i="6000,8403,9786"; a="155063108" X-IronPort-AV: E=Sophos;i="5.77,424,1596524400"; d="scan'208";a="155063108" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2020 08:00:04 -0700 IronPort-SDR: 60Y2zCmeAkbABp2y8OMqCvviOl9A3uhIy+8pMfGhVUPElBqXjMkflUPimo5I+ABFK0jw9lIJjW EStei4du+jAA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,424,1596524400"; d="scan'208";a="334415361" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga002.jf.intel.com with ESMTP; 27 Oct 2020 07:59:59 -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 09RExxx3015784; Tue, 27 Oct 2020 14:59:59 GMT Received: from sivswdev09.ir.intel.com (localhost [127.0.0.1]) by sivswdev09.ir.intel.com with ESMTP id 09RExx8s022914; Tue, 27 Oct 2020 14:59:59 GMT Received: (from lma25@localhost) by sivswdev09.ir.intel.com with LOCAL id 09RExxUo022910; Tue, 27 Oct 2020 14:59:59 GMT From: Liang Ma To: dev@dpdk.org Cc: ruifeng.wang@arm.com, haiyue.wang@intel.com, bruce.richardson@intel.com, konstantin.ananyev@intel.com, david.hunt@intel.com, jerinjacobk@gmail.com, nhorman@tuxdriver.com, thomas@monjalon.net, timothy.mcdaniel@intel.com, gage.eads@intel.com, mw@semihalf.com, gtzalik@amazon.com, ajit.khaparde@broadcom.com, hkalra@marvell.com, johndale@cisco.com, xavier.huwei@huawei.com, xuanziyang2@huawei.com, matan@nvidia.com, yongwang@vmware.com, Anatoly Burakov , Beilei Xing , Jeff Guo Date: Tue, 27 Oct 2020 14:59:07 +0000 Message-Id: <1603810749-22285-8-git-send-email-liang.j.ma@intel.com> X-Mailer: git-send-email 1.7.7.4 In-Reply-To: <1603810749-22285-1-git-send-email-liang.j.ma@intel.com> References: <1603810749-22285-1-git-send-email-liang.j.ma@intel.com> In-Reply-To: <1603494392-7181-1-git-send-email-liang.j.ma@intel.com> References: <1603494392-7181-1-git-send-email-liang.j.ma@intel.com> Subject: [dpdk-dev] [PATCH v10 7/9] 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 Acked-by: Konstantin Ananyev Acked-by: Jeff Guo --- drivers/net/i40e/i40e_ethdev.c | 1 + drivers/net/i40e/i40e_rxtx.c | 26 ++++++++++++++++++++++++++ drivers/net/i40e/i40e_rxtx.h | 2 ++ 3 files changed, 29 insertions(+) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 4778aaf299..358a38232b 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 5df9a9df56..78862fe3a2 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -72,6 +72,32 @@ #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, uint8_t *data_sz) +{ + 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); + + /* registers are 64-bit */ + *data_sz = 8; + + 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..5826cf1099 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, uint8_t *data_sz); /* For each value it means, datasheet of hardware can tell more details * -- 2.17.1