From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759409AbcLUJVw (ORCPT ); Wed, 21 Dec 2016 04:21:52 -0500 Received: from mail-bn3nam01on0064.outbound.protection.outlook.com ([104.47.33.64]:64827 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755842AbcLUJVi (ORCPT ); Wed, 21 Dec 2016 04:21:38 -0500 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Satha.Rao@cavium.com; From: Satha Koteswara Rao To: CC: , , , , , , , , , Subject: [RFC PATCH 3/7] Enable pause frame support Date: Wed, 21 Dec 2016 14:16:47 +0530 Message-ID: <1482310011-1862-4-git-send-email-satha.rao@caviumnetworks.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1482310011-1862-1-git-send-email-satha.rao@caviumnetworks.com> References: <1482310011-1862-1-git-send-email-satha.rao@caviumnetworks.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [111.93.218.67] X-ClientProxiedBy: MAXPR01CA0030.INDPRD01.PROD.OUTLOOK.COM (10.164.147.37) To CY4PR07MB2838.namprd07.prod.outlook.com (10.169.252.16) X-MS-Office365-Filtering-Correlation-Id: 0f590592-9d22-414b-ea0b-08d4297e1bb2 X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001);SRVR:CY4PR07MB2838; 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} +void enable_pause_frames(int node, int bgx_idx, int lmac) +{ + u64 reg_value = 0; + struct bgx *bgx = bgx_vnic[(node * MAX_BGX_PER_NODE) + bgx_idx]; + + reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_TX_CTL); + /* Enable BGX()_SMU()_TX_CTL */ + if (!(reg_value & L2P_BP_CONV)) + bgx_reg_write(bgx, lmac, BGX_SMUX_TX_CTL, + (reg_value | (L2P_BP_CONV))); + + reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_HG2_CTL); + /* Clear if BGX()_SMU()_HG2_CONTROL[HG2TX_EN] is set */ + if (reg_value & SMUX_HG2_CTL_HG2TX_EN) + bgx_reg_write(bgx, lmac, BGX_SMUX_HG2_CTL, + (reg_value & (~SMUX_HG2_CTL_HG2TX_EN))); + + reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_CBFC_CTL); + /* Clear if BGX()_SMU()_CBFC_CTL[TX_EN] is set */ + if (reg_value & CBFC_CTL_TX_EN) + bgx_reg_write(bgx, lmac, BGX_SMUX_CBFC_CTL, + (reg_value & (~CBFC_CTL_TX_EN))); +} +EXPORT_SYMBOL(enable_pause_frames); + /* Return number of BGX present in HW */ unsigned bgx_get_map(int node) { diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h index 01cc7c8..5b57bd1 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h @@ -131,6 +131,11 @@ #define BGX_SMUX_TX_CTL 0x20178 #define SMU_TX_CTL_DIC_EN BIT_ULL(0) #define SMU_TX_CTL_UNI_EN BIT_ULL(1) +#define L2P_BP_CONV BIT_ULL(7) +#define BGX_SMUX_CBFC_CTL 0x20218 +#define CBFC_CTL_TX_EN BIT_ULL(1) +#define BGX_SMUX_HG2_CTL 0x20210 +#define SMUX_HG2_CTL_HG2TX_EN BIT_ULL(18) #define SMU_TX_CTL_LNK_STATUS (3ull << 4) #define BGX_SMUX_TX_THRESH 0x20180 #define BGX_SMUX_CTL 0x20200 @@ -212,6 +217,8 @@ void bgx_lmac_internal_loopback(int node, int bgx_idx, u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx); u64 bgx_get_tx_stats(int node, int bgx_idx, int lmac, int idx); +void enable_pause_frames(int node, int bgx_idx, int lmac); + #define BGX_RX_STATS_COUNT 11 #define BGX_TX_STATS_COUNT 18 -- 1.8.3.1