Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753772AbbLILf4 (ORCPT ); Wed, 9 Dec 2015 06:35:56 -0500 Received: from mail-pa0-f48.google.com ([209.85.220.48]:36425 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753453AbbLILfv (ORCPT ); Wed, 9 Dec 2015 06:35:51 -0500 From: Sunil Goutham To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, p.fedin@samsung.com, Sunil.Goutham@caviumnetworks.com, Sunil Goutham Subject: [PATCH 2/2] net: thunderx: Enable CQE count threshold interrupt Date: Wed, 9 Dec 2015 17:08:01 +0530 Message-Id: <1449661081-15435-3-git-send-email-sunil.kovvuri@gmail.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3072 Lines: 84 From: Sunil Goutham This feature is introduced in pass-2 chip and with this CQ interrupt coalescing will work based on both timer and count. Signed-off-by: Sunil Goutham --- drivers/net/ethernet/cavium/thunder/nic.h | 2 ++ drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 5 ++++- drivers/net/ethernet/cavium/thunder/nicvf_queues.h | 3 ++- 4 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index 02571f4..e782856 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -34,6 +34,8 @@ /* NIC priv flags */ #define NIC_SRIOV_ENABLED BIT(0) +#define VNIC_NAPI_WEIGHT NAPI_POLL_WEIGHT + /* Min/Max packet size */ #define NIC_HW_MIN_FRS 64 #define NIC_HW_MAX_FRS 9200 /* 9216 max packet including FCS */ diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c index c24cb2a..e06a7f8 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c @@ -1155,7 +1155,7 @@ int nicvf_open(struct net_device *netdev) cq_poll->cq_idx = qidx; cq_poll->nicvf = nic; netif_napi_add(netdev, &cq_poll->napi, nicvf_poll, - NAPI_POLL_WEIGHT); + VNIC_NAPI_WEIGHT); napi_enable(&cq_poll->napi); nic->napi[qidx] = cq_poll; } diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index b11fc09..4e9709e 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -299,7 +299,10 @@ static int nicvf_init_cmp_queue(struct nicvf *nic, return err; cq->desc = cq->dmem.base; - cq->thresh = CMP_QUEUE_CQE_THRESH; + if (!pass1_silicon(nic->pdev)) + cq->thresh = CMP_QUEUE_CQE_THRESH; + else + cq->thresh = 0; nic->cq_coalesce_usecs = (CMP_QUEUE_TIMER_THRESH * 0.05) - 1; return 0; diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h index a4f6667..0fae6ad 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h @@ -10,6 +10,7 @@ #define NICVF_QUEUES_H #include +#include "nic.h" #include "q_struct.h" #define MAX_QUEUE_SET 128 @@ -75,7 +76,7 @@ */ #define CMP_QSIZE CMP_QUEUE_SIZE2 #define CMP_QUEUE_LEN (1ULL << (CMP_QSIZE + 10)) -#define CMP_QUEUE_CQE_THRESH 0 +#define CMP_QUEUE_CQE_THRESH (VNIC_NAPI_WEIGHT / 2) #define CMP_QUEUE_TIMER_THRESH 80 /* ~2usec */ #define RBDR_SIZE RBDR_SIZE0 -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/