From patchwork Wed Apr 3 13:19:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mateusz Polchlopek X-Patchwork-Id: 13616182 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E92A714882D for ; Wed, 3 Apr 2024 13:28:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712150899; cv=none; b=OOx4x1N5zoqkWmFZ0UCpKkNrq0KED6xNx29qpP4fCa446NF1EBEsa8zwA4VfbEUjIIGIIr4hqWDHvYw0pHzGH6Mx4ZvJgUKE2QyfQvTsoJo7/y9wXqw7k2l2qmTSIioLH4UhLIhuD0i7z6YJ+uGuWaJ3lLHFVSk07J6Zyfp5OCo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712150899; c=relaxed/simple; bh=cAAqRptvacpuGye4JbzJsPjpXkrxFqrVluCCjCIKcfM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KbEpcqsnUsLQyJZ6SUekuHCLvu7kY/DtUWSQXHsC9LPcwzrEweZegozylsDQ1V6OU76DM12YC9B+3iswA6Lktl9UZi8txJgMrKEdgc+nK/QIbQHvP+hqNTVFBAPEIFjqY4i+K/3lpzJjHsaKkbQKGal2N/68HIQJM5Uf0Z5CqUc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=k6M6i+s0; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="k6M6i+s0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1712150898; x=1743686898; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=cAAqRptvacpuGye4JbzJsPjpXkrxFqrVluCCjCIKcfM=; b=k6M6i+s06TRJY7dKxFp4pzrYKAMRhBOdMFfUSo7MF0hHWn5SOCYTEX6K mYc3p02hvYZ7vmer8jkyaYlZDAM5XCWApIjVIZuFlwm3cOI/FWj+o82Tg P2uE0pB6a/aX1aL+RVjcHKmerqXc/NEEwPOlcgvfvn70qMqvqscIiN876 mIe4OKIwDjLKvJ3WcE8WRTAMY7XURwscbt7S53WYfSWWeU0ibPP8ZSRcX mDJofEV1ryys4yMauTVAm66lIkE1Y+lFOFyxToS4Vq1JmeuOFUzjJFqI0 5zqWzIFu1QL/TSkaVlpg5D8o5XVYKPnRWZnXBenTxM4dcX9tp2rOu0aXk g==; X-CSE-ConnectionGUID: lyvk4c6STwuvChatkKTXSA== X-CSE-MsgGUID: MpUPkJa/Q7yngI8QW2chGg== X-IronPort-AV: E=McAfee;i="6600,9927,11033"; a="7568727" X-IronPort-AV: E=Sophos;i="6.07,177,1708416000"; d="scan'208";a="7568727" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Apr 2024 06:28:17 -0700 X-CSE-ConnectionGUID: KwgR++nCQIiHAaWXMFYILQ== X-CSE-MsgGUID: 9SWy3DaBR3OuN4Q3iweHmg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,177,1708416000"; d="scan'208";a="41592037" Received: from irvmail002.ir.intel.com ([10.43.11.120]) by fmviesa002.fm.intel.com with ESMTP; 03 Apr 2024 06:28:15 -0700 Received: from fedora.igk.intel.com (Metan_eth.igk.intel.com [10.123.220.124]) by irvmail002.ir.intel.com (Postfix) with ESMTP id 1305E36C13; Wed, 3 Apr 2024 14:28:13 +0100 (IST) From: Mateusz Polchlopek To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, horms@kernel.org, anthony.l.nguyen@intel.com, Jacob Keller , Wojciech Drewek , Mateusz Polchlopek Subject: [Intel-wired-lan] [PATCH iwl-next v3 01/12] virtchnl: add support for enabling PTP on iAVF Date: Wed, 3 Apr 2024 09:19:16 -0400 Message-Id: <20240403131927.87021-2-mateusz.polchlopek@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20240403131927.87021-1-mateusz.polchlopek@intel.com> References: <20240403131927.87021-1-mateusz.polchlopek@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jacob Keller Add support for allowing a VF to enable PTP feature - Rx timestamps The new capability is gated by VIRTCHNL_VF_CAP_PTP, which must be set by the VF to request access to the new operations. In addition, the VIRTCHNL_OP_1588_PTP_CAPS command is used to determine the specific capabilities available to the VF. This support includes the following additional capabilities: * Rx timestamps enabled in the Rx queues (when using flexible advanced descriptors) * Read access to PHC time over virtchnl using VIRTCHNL_OP_1588_PTP_GET_TIME Extra space is reserved in most structures to allow for future extension (like set clock, Tx timestamps). Additional opcode numbers are reserved and space in the virtchnl_ptp_caps structure is specifically set aside for this. Additionally, each structure has some space reserved for future extensions to allow some flexibility. Reviewed-by: Wojciech Drewek Signed-off-by: Jacob Keller Signed-off-by: Mateusz Polchlopek --- include/linux/avf/virtchnl.h | 66 ++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h index 8e177b67e82f..5003d29e3f5b 100644 --- a/include/linux/avf/virtchnl.h +++ b/include/linux/avf/virtchnl.h @@ -151,6 +151,9 @@ enum virtchnl_ops { VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2 = 55, VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2 = 56, VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2 = 57, + /* opcode 58 and 59 are reserved */ + VIRTCHNL_OP_1588_PTP_GET_CAPS = 60, + VIRTCHNL_OP_1588_PTP_GET_TIME = 61, VIRTCHNL_OP_MAX, }; @@ -260,6 +263,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource); #define VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC BIT(26) #define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF BIT(27) #define VIRTCHNL_VF_OFFLOAD_FDIR_PF BIT(28) +#define VIRTCHNL_VF_CAP_PTP BIT(31) #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \ VIRTCHNL_VF_OFFLOAD_VLAN | \ @@ -1405,6 +1409,62 @@ struct virtchnl_fdir_del { VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_fdir_del); +#define VIRTCHNL_1588_PTP_CAP_RX_TSTAMP BIT(1) +#define VIRTCHNL_1588_PTP_CAP_READ_PHC BIT(2) + +/** + * struct virtchnl_ptp_caps + * + * Structure that defines the PTP capabilities available to the VF. The VF + * sends VIRTCHNL_OP_1588_PTP_GET_CAPS, and must fill in the ptp_caps field + * indicating what capabilities it is requesting. The PF will respond with the + * same message with the virtchnl_ptp_caps structure indicating what is + * enabled for the VF. + * + * @caps: On send, VF sets what capabilities it requests. On reply, PF + * indicates what has been enabled for this VF. The PF shall not set + * bits which were not requested by the VF. + * @rsvd: Reserved bits for future extension. + * + * PTP capabilities + * + * VIRTCHNL_1588_PTP_CAP_RX_TSTAMP indicates that the VF receive queues have + * receive timestamps enabled in the flexible descriptors. Note that this + * requires a VF to also negotiate to enable advanced flexible descriptors in + * the receive path instead of the default legacy descriptor format. + * + * VIRTCHNL_1588_PTP_CAP_READ_PHC indicates that the VF may read the PHC time + * via the VIRTCHNL_OP_1588_PTP_GET_TIME command. + * + * Note that in the future, additional capability flags may be added which + * indicate additional extended support. All fields marked as reserved by this + * header will be set to zero. VF implementations should verify this to ensure + * that future extensions do not break compatibility. + */ +struct virtchnl_ptp_caps { + u32 caps; + u8 rsvd[44]; +}; +VIRTCHNL_CHECK_STRUCT_LEN(48, virtchnl_ptp_caps); + +/** + * struct virtchnl_phc_time + * @time: PHC time in nanoseconds + * @rsvd: Reserved for future extension + * + * Structure received with VIRTCHNL_OP_1588_PTP_GET_TIME. Contains the 64bits + * of PHC clock time in * nanoseconds. + * + * VIRTCHNL_OP_1588_PTP_GET_TIME may be sent to request the current time of + * the PHC. This op is available in case direct access via the PHC registers + * is not available. + */ +struct virtchnl_phc_time { + u64 time; + u8 rsvd[8]; +}; +VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_phc_time); + #define __vss_byone(p, member, count, old) \ (struct_size(p, member, count) + (old - 1 - struct_size(p, member, 0))) @@ -1626,6 +1686,12 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode, case VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2: valid_len = sizeof(struct virtchnl_vlan_setting); break; + case VIRTCHNL_OP_1588_PTP_GET_CAPS: + valid_len = sizeof(struct virtchnl_ptp_caps); + break; + case VIRTCHNL_OP_1588_PTP_GET_TIME: + valid_len = sizeof(struct virtchnl_phc_time); + break; /* These are always errors coming from the VF. */ case VIRTCHNL_OP_EVENT: case VIRTCHNL_OP_UNKNOWN: