From patchwork Wed Nov 6 17:37:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mateusz Polchlopek X-Patchwork-Id: 13864426 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 034951DE886 for ; Wed, 6 Nov 2024 11:37:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730893073; cv=none; b=rjodA80e7AbIjnx+cYjzDXYVrtP9Gbke3/+kB51QqQNOVLxm9gEVPKUFg22dbKtMLAGYW8jTfFq+xO3KEfRC3R2PfYlVzX7PT27K4ObvzRGLx5o4z+Wb7cHEtvxJ6IBKxA7FhkQsnqx4ut5sCPPEgqeyZh6bXKL1R8d7jKy9nJA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730893073; c=relaxed/simple; bh=CW7k67SojY93tt0tu9frOUW0putdp0RxpTmB3qfyerM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=niVB9wYA4orEWUBlzMgpmPzOidSoXXOX3mecyrpFQwHqx/GPE52gttzUxpJVPOsMwqB3zie/idETV6TAy66SzJu561RXRDw14Q4lEMoXN4aCgME2k8am/iyXZQkvFGX5sH8pbEKZBdFg82JzAXBdbI9LkTlloG+AII9TiXvOX0s= 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=JAw22UEP; arc=none smtp.client-ip=198.175.65.20 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="JAw22UEP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1730893071; x=1762429071; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CW7k67SojY93tt0tu9frOUW0putdp0RxpTmB3qfyerM=; b=JAw22UEPe6rsEaWjHrx+niK7JRa1V/LF24elqZrLqj7Vw0v4VrZMTUnN CI2znwZOOkEE07zprf/GrqFZFWn88Z+e8aEQO8CQAoqTziCa1AL86rOHd yY1XqJf3aVOEbhGHOIacW6j4atqXfokbzpcDQjAwPYpV+g9B3fskitAfy 0H06OX8q/GpOtsH6vpI6Jmdmv7fjLMjzFRYOoCDFxnIxz/k1EfYdepjfJ bbN/G0caZnHIFpLHDwcSyvW5dJm04CCpDQ6wqU4QsXOVffiZ2ojaCGZ6T +v7GoNvivaQkJTZEp3gtuGVoGtZtlsaWaKpbFtcS5eTHgsP0GoBfAZNdk Q==; X-CSE-ConnectionGUID: 4BYnCmGDSaKY3jpThrR3XA== X-CSE-MsgGUID: 74To5kv0Q+m+YpFlH/n5Og== X-IronPort-AV: E=McAfee;i="6700,10204,11222"; a="30455493" X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="30455493" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2024 03:37:50 -0800 X-CSE-ConnectionGUID: TtVQhuVUQJupY5LjnpNoCg== X-CSE-MsgGUID: ldQTe6DWQLOLGfYPS2bFYw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,262,1725346800"; d="scan'208";a="122020116" Received: from irvmail002.ir.intel.com ([10.43.11.120]) by orviesa001.jf.intel.com with ESMTP; 06 Nov 2024 03:37:47 -0800 Received: from fedora.igk.intel.com (Metan_eth.igk.intel.com [10.123.220.124]) by irvmail002.ir.intel.com (Postfix) with ESMTP id EBCE9284ED; Wed, 6 Nov 2024 11:37:45 +0000 (GMT) From: Mateusz Polchlopek To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, Jacob Keller , Wojciech Drewek , Rahul Rameshbabu , Simon Horman , Alexander Lobakin , Rafal Romanowski , Mateusz Polchlopek Subject: [Intel-wired-lan] [PATCH iwl-next v13 01/14] virtchnl: add support for enabling PTP on iAVF Date: Wed, 6 Nov 2024 12:37:18 -0500 Message-Id: <20241106173731.4272-2-mateusz.polchlopek@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20241106173731.4272-1-mateusz.polchlopek@intel.com> References: <20241106173731.4272-1-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. Signed-off-by: Jacob Keller Reviewed-by: Wojciech Drewek Reviewed-by: Rahul Rameshbabu Reviewed-by: Simon Horman Reviewed-by: Alexander Lobakin Tested-by: Rafal Romanowski Signed-off-by: Mateusz Polchlopek --- include/linux/avf/virtchnl.h | 67 +++++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-) diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h index 13a11f3c09b8..92866e449b21 100644 --- a/include/linux/avf/virtchnl.h +++ b/include/linux/avf/virtchnl.h @@ -154,7 +154,10 @@ 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 57 - 65 are reserved */ + /* opcode 58 and 59 are reserved */ + VIRTCHNL_OP_1588_PTP_GET_CAPS = 60, + VIRTCHNL_OP_1588_PTP_GET_TIME = 61, + /* opcode 62 - 65 are reserved */ VIRTCHNL_OP_GET_QOS_CAPS = 66, /* opcode 68 through 111 are reserved */ VIRTCHNL_OP_CONFIG_QUEUE_BW = 112, @@ -270,6 +273,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource); #define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF BIT(27) #define VIRTCHNL_VF_OFFLOAD_FDIR_PF BIT(28) #define VIRTCHNL_VF_OFFLOAD_QOS BIT(29) +#define VIRTCHNL_VF_CAP_PTP BIT(31) #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \ VIRTCHNL_VF_OFFLOAD_VLAN | \ @@ -1425,6 +1429,61 @@ 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 - Defines the PTP caps available to 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. + * + * 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. + * + * 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 - Contains the 64bits of PHC clock time in ns. + * @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); + struct virtchnl_shaper_bw { /* Unit is Kbps */ u32 committed; @@ -1757,6 +1816,12 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode, } } 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: