From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuval Mintz Subject: [PATCH net-next 10/10] qed: Cache alignemnt padding to match host Date: Sun, 28 May 2017 18:02:00 +0300 Message-ID: <1495983720-10853-11-git-send-email-Yuval.Mintz@cavium.com> References: <1495983720-10853-1-git-send-email-Yuval.Mintz@cavium.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Yuval Mintz To: , Return-path: Received: from mail-sn1nam02on0077.outbound.protection.outlook.com ([104.47.36.77]:31424 "EHLO NAM02-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751098AbdE1PEO (ORCPT ); Sun, 28 May 2017 11:04:14 -0400 In-Reply-To: <1495983720-10853-1-git-send-email-Yuval.Mintz@cavium.com> Sender: netdev-owner@vger.kernel.org List-ID: Improve PCI performance by adjusting padding sizes to match those of the host machine's cacheline. Signed-off-by: Yuval Mintz --- drivers/net/ethernet/qlogic/qed/qed_dev.c | 15 +++++++++++++-- drivers/net/ethernet/qlogic/qed/qed_reg_addr.h | 1 + 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index 072d950..d73e3c2 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -1227,6 +1227,10 @@ static void qed_init_cache_line_size(struct qed_hwfn *p_hwfn, L1_CACHE_BYTES, wr_mbs); STORE_RT_REG(p_hwfn, PGLUE_REG_B_CACHE_LINE_SIZE_RT_OFFSET, val); + if (val > 0) { + STORE_RT_REG(p_hwfn, PSWRQ2_REG_DRAM_ALIGN_WR_RT_OFFSET, val); + STORE_RT_REG(p_hwfn, PSWRQ2_REG_DRAM_ALIGN_RD_RT_OFFSET, val); + } } static int qed_hw_init_common(struct qed_hwfn *p_hwfn, @@ -1433,8 +1437,15 @@ enum QED_ROCE_EDPM_MODE { static int qed_hw_init_port(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, int hw_mode) { - return qed_init_run(p_hwfn, p_ptt, PHASE_PORT, - p_hwfn->port_id, hw_mode); + int rc = 0; + + rc = qed_init_run(p_hwfn, p_ptt, PHASE_PORT, p_hwfn->port_id, hw_mode); + if (rc) + return rc; + + qed_wr(p_hwfn, p_ptt, PGLUE_B_REG_MASTER_WRITE_PAD_ENABLE, 0); + + return 0; } static int qed_hw_init_pf(struct qed_hwfn *p_hwfn, diff --git a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h index 6abf918..67172d7 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h +++ b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h @@ -1559,6 +1559,7 @@ #define PGLUE_B_REG_PGL_ADDR_EC_F0_K2 0x2aaf9cUL #define PGLUE_B_REG_PGL_ADDR_F0_F0_K2 0x2aafa0UL #define PGLUE_B_REG_PGL_ADDR_F4_F0_K2 0x2aafa4UL +#define PGLUE_B_REG_MASTER_WRITE_PAD_ENABLE 0x2aae30UL #define NIG_REG_TSGEN_FREECNT_UPDATE_K2 0x509008UL #define CNIG_REG_NIG_PORT0_CONF_K2 0x218200UL -- 1.9.3