From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Pirko Subject: [patch net-next 14/17] mlxsw: reg: Add lossless settings for PBMC register Date: Wed, 6 Apr 2016 17:10:13 +0200 Message-ID: <1459955416-23786-15-git-send-email-jiri@resnulli.us> References: <1459955416-23786-1-git-send-email-jiri@resnulli.us> Cc: davem@davemloft.net, idosch@mellanox.com, eladr@mellanox.com, yotamg@mellanox.com, ogerlitz@mellanox.com, roopa@cumulusnetworks.com, gospo@cumulusnetworks.com To: netdev@vger.kernel.org Return-path: Received: from mail-wm0-f66.google.com ([74.125.82.66]:36001 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754210AbcDFPKh (ORCPT ); Wed, 6 Apr 2016 11:10:37 -0400 Received: by mail-wm0-f66.google.com with SMTP id o129so4683604wmo.3 for ; Wed, 06 Apr 2016 08:10:36 -0700 (PDT) In-Reply-To: <1459955416-23786-1-git-send-email-jiri@resnulli.us> Sender: netdev-owner@vger.kernel.org List-ID: From: Ido Schimmel When configuring PAUSE frames and PFC we'll need to configure the Xon/Xoff threshold for the priority group (PG) buffers. Add the Xon/Xoff threshold fields to the PBMC register so that we can configure these when needed. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 35 +++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index b83514a..bcd38ff 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -2788,6 +2788,30 @@ MLXSW_ITEM32_INDEXED(reg, pbmc, buf_epsb, 0x0C, 24, 1, 0x08, 0x00, false); */ MLXSW_ITEM32_INDEXED(reg, pbmc, buf_size, 0x0C, 0, 16, 0x08, 0x00, false); +/* reg_pbmc_buf_xoff_threshold + * Once the amount of data in the buffer goes above this value, device + * starts sending PFC frames for all priorities associated with the + * buffer. Units are represented in cells. Reserved in case of lossy + * buffer. + * Access: RW + * + * Note: In Spectrum, reserved for buffer[9]. + */ +MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xoff_threshold, 0x0C, 16, 16, + 0x08, 0x04, false); + +/* reg_pbmc_buf_xon_threshold + * When the amount of data in the buffer goes below this value, device + * stops sending PFC frames for the priorities associated with the + * buffer. Units are represented in cells. Reserved in case of lossy + * buffer. + * Access: RW + * + * Note: In Spectrum, reserved for buffer[9]. + */ +MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xon_threshold, 0x0C, 0, 16, + 0x08, 0x04, false); + static inline void mlxsw_reg_pbmc_pack(char *payload, u8 local_port, u16 xoff_timer_value, u16 xoff_refresh) { @@ -2806,6 +2830,17 @@ static inline void mlxsw_reg_pbmc_lossy_buffer_pack(char *payload, mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size); } +static inline void mlxsw_reg_pbmc_lossless_buffer_pack(char *payload, + int buf_index, u16 size, + u16 threshold) +{ + mlxsw_reg_pbmc_buf_lossy_set(payload, buf_index, 0); + mlxsw_reg_pbmc_buf_epsb_set(payload, buf_index, 0); + mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size); + mlxsw_reg_pbmc_buf_xoff_threshold_set(payload, buf_index, threshold); + mlxsw_reg_pbmc_buf_xon_threshold_set(payload, buf_index, threshold); +} + /* PSPA - Port Switch Partition Allocation * --------------------------------------- * Controls the association of a port with a switch partition and enables -- 2.5.5