From patchwork Fri Oct 23 23:06:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liang, Ma" X-Patchwork-Id: 82022 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 5D421A04B0; Sat, 24 Oct 2020 01:09:01 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A1EBB6A6F; Sat, 24 Oct 2020 01:07:05 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 22E3D98 for ; Sat, 24 Oct 2020 01:06:55 +0200 (CEST) IronPort-SDR: FIuGturVTAul+xgD0pyas6g9TuwZ6zct+tJMewI6XU9KXJLgd5oNlKl4cwH7L12zUuvGtcP2SW EWR63DKgucYQ== X-IronPort-AV: E=McAfee;i="6000,8403,9783"; a="147031964" X-IronPort-AV: E=Sophos;i="5.77,410,1596524400"; d="scan'208";a="147031964" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Oct 2020 16:06:54 -0700 IronPort-SDR: b0iafvn/eJTAQHdIgBQlhKg51jycV7Mqb9XQvv2lWfZQhwdYE/LD/R5L+V3iiLsLSPk3cTvMNf F+cJSEjk1SIQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,410,1596524400"; d="scan'208";a="321896181" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga006.jf.intel.com with ESMTP; 23 Oct 2020 16:06:50 -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 09NN6o7l016541; Sat, 24 Oct 2020 00:06:50 +0100 Received: from sivswdev09.ir.intel.com (localhost [127.0.0.1]) by sivswdev09.ir.intel.com with ESMTP id 09NN6n8R007416; Sat, 24 Oct 2020 00:06:49 +0100 Received: (from lma25@localhost) by sivswdev09.ir.intel.com with LOCAL id 09NN6nUX007411; Sat, 24 Oct 2020 00:06:49 +0100 From: Liang Ma To: dev@dpdk.org Cc: anatoly.burakov@intel.com, viktorin@rehivetech.com, qi.z.zhang@intel.com, ruifeng.wang@arm.com, beilei.xing@intel.com, jia.guo@intel.com, qiming.yang@intel.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, drc@linux.vnet.ibm.com, Liang Ma Date: Sat, 24 Oct 2020 00:06:29 +0100 Message-Id: <1603494392-7181-8-git-send-email-liang.j.ma@intel.com> X-Mailer: git-send-email 1.7.7.4 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> In-Reply-To: <1603473432-11153-1-git-send-email-liang.j.ma@intel.com> References: <1603473432-11153-1-git-send-email-liang.j.ma@intel.com> Subject: [dpdk-dev] [PATCH v9 07/10] 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 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 *