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 A1175A00BE; Wed, 27 May 2020 19:02:57 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 1DAFD1DB01; Wed, 27 May 2020 19:02:23 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 522851DAED for ; Wed, 27 May 2020 19:02:17 +0200 (CEST) IronPort-SDR: Qva6/SIZQHwFLH6cny8/lOTek7QMNc9wROCyOUzQaLWbUNdjiqV6Uq021fZeAn2M7tBm6alPOy rlG+VYuaouHQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2020 10:02:13 -0700 IronPort-SDR: QamKuxVQkWTsf095YxwnGNYp8xhaInTrtXar4+cRW0Z7GCvFaslCQhL7tXZ/7stqmg9qWy/WFZ OCIEcWXtsTBQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,442,1583222400"; d="scan'208";a="442595993" Received: from silpixa00399498.ir.intel.com (HELO silpixa00399498.ger.corp.intel.com) ([10.237.222.52]) by orsmga005.jf.intel.com with ESMTP; 27 May 2020 10:02:06 -0700 From: Anatoly Burakov To: dev@dpdk.org Cc: Qiming Yang , Wenzhuo Lu , david.hunt@intel.com, liang.j.ma@intel.com Date: Wed, 27 May 2020 18:02:05 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [RFC 5/6] net/ice: 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 `next_rx_desc` function that will return an address of an RX ring's status bit. Signed-off-by: Liang J. Ma Signed-off-by: Anatoly Burakov --- drivers/net/ice/ice_ethdev.c | 1 + drivers/net/ice/ice_rxtx.c | 23 +++++++++++++++++++++++ drivers/net/ice/ice_rxtx.h | 2 ++ 3 files changed, 26 insertions(+) diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c index d5110c4392..db8269a548 100644 --- a/drivers/net/ice/ice_ethdev.c +++ b/drivers/net/ice/ice_ethdev.c @@ -219,6 +219,7 @@ static const struct eth_dev_ops ice_eth_dev_ops = { .udp_tunnel_port_add = ice_dev_udp_tunnel_port_add, .udp_tunnel_port_del = ice_dev_udp_tunnel_port_del, .tx_done_cleanup = ice_tx_done_cleanup, + .next_rx_desc = ice_next_rx_desc, }; /* store statistics names and its offset in stats structure */ diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c index 1c9f31efdf..80fd6bd134 100644 --- a/drivers/net/ice/ice_rxtx.c +++ b/drivers/net/ice/ice_rxtx.c @@ -24,6 +24,29 @@ uint64_t rte_net_ice_dynflag_proto_xtr_ipv6_mask; uint64_t rte_net_ice_dynflag_proto_xtr_ipv6_flow_mask; uint64_t rte_net_ice_dynflag_proto_xtr_tcp_mask; +int ice_next_rx_desc(void *rx_queue, volatile void **tail_desc_addr, + uint64_t *expected, uint64_t *mask) +{ + volatile union ice_rx_flex_desc *rxdp; + struct ice_rx_queue *rxq = rx_queue; + uint16_t desc; + + desc = rxq->rx_tail; + rxdp = &rxq->rx_ring[desc]; + /* watch for changes in status bit */ + *tail_desc_addr = &rxdp->wb.status_error0; + + /* + * we expect the DD bit to be set to 1 if this descriptor was already + * written to. + */ + *expected = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S); + *mask = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S); + + return 0; +} + + static inline uint64_t ice_rxdid_to_proto_xtr_ol_flag(uint8_t rxdid) { diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h index 2fdcfb7d04..7eb6fa904e 100644 --- a/drivers/net/ice/ice_rxtx.h +++ b/drivers/net/ice/ice_rxtx.h @@ -202,5 +202,7 @@ uint16_t ice_xmit_pkts_vec_avx2(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); int ice_fdir_programming(struct ice_pf *pf, struct ice_fltr_desc *fdir_desc); int ice_tx_done_cleanup(void *txq, uint32_t free_cnt); +int ice_next_rx_desc(void *rx_queue, volatile void **tail_desc_addr, + uint64_t *expected, uint64_t *mask); #endif /* _ICE_RXTX_H_ */ -- 2.17.1