From nobody Thu Apr 3 11:43:05 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1741166807; cv=none; d=zohomail.com; s=zohoarc; b=C0xdTUDKNtuBiD3wDC5SJ7mplRagCHm272q21hpo58okes/k6OiHiCtTnpBGnLgodXM4pmVDsFL2iNhhVZ/Brg35TB2pjSQABKngGoxvhuCEV0w5RGkC89Ef5h2/pf2G02pJ50HukWrk76bq0pTdsdYBKem6/wPawO8ydOaiExs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1741166807; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=SAe9AMTdGztx+AkaVEobS/RDvr5lwHQRUYVyyi+Nkpk=; b=GzxSK/GTcSjcvo6lz222Nzv/5uqD9Ft+Mu+rnTNjugu4OV+bgEH6qsLDGvql8cf3bu6cp6MQJNBn2UFAJIAfQC767nJw6wg+T1pePMcHTk1L2W6MNQDH0Z51NtLylg5WXsgYI+C36SD2MSWjhHto6rtiaNpyTqA2xwe2rMypwvI= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1741166807261718.5558138341944; Wed, 5 Mar 2025 01:26:47 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tpl1D-00018X-Hf; Wed, 05 Mar 2025 04:26:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tpl18-00016c-BY for qemu-devel@nongnu.org; Wed, 05 Mar 2025 04:26:21 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tpl16-0001G1-Ep for qemu-devel@nongnu.org; Wed, 05 Mar 2025 04:26:17 -0500 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Z76Yr04jnz6K9SV; Wed, 5 Mar 2025 17:24:00 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id EE9F8140A08; Wed, 5 Mar 2025 17:26:14 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.19.247) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 5 Mar 2025 10:26:03 +0100 To: , , CC: , , Yuquan Wang , Arpit Kumar , Sweta Kumari , Vinayak Holikatti , Davidlohr Bueso , Ajay Joshi Subject: [PATCH qemu 2/8] hw/cxl: Support get/set mctp response payload size Date: Wed, 5 Mar 2025 09:24:53 +0000 Message-ID: <20250305092501.191929-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250305092501.191929-1-Jonathan.Cameron@huawei.com> References: <20250305092501.191929-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.19.247] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To frapeml500008.china.huawei.com (7.182.85.71) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1741166807767019000 Content-Type: text/plain; charset="utf-8" From: Davidlohr Bueso Add Get/Set Response Message Limit commands. Signed-off-by: Davidlohr Bueso Reviewed-by: Fan Ni Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-mailbox-utils.c | 58 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 56 insertions(+), 2 deletions(-) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 4401f446d9..bd25df033a 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -7,6 +7,8 @@ * COPYING file in the top-level directory. */ =20 +#include + #include "qemu/osdep.h" #include "hw/pci/msi.h" #include "hw/pci/msix.h" @@ -56,6 +58,8 @@ enum { INFOSTAT =3D 0x00, #define IS_IDENTIFY 0x1 #define BACKGROUND_OPERATION_STATUS 0x2 + #define GET_RESPONSE_MSG_LIMIT 0x3 + #define SET_RESPONSE_MSG_LIMIT 0x4 #define BACKGROUND_OPERATION_ABORT 0x5 EVENTS =3D 0x01, #define GET_RECORDS 0x0 @@ -413,12 +417,58 @@ static CXLRetCode cmd_infostat_identify(const struct = cxl_cmd *cmd, is_identify->component_type =3D 0x3; /* Type 3 */ } =20 - /* TODO: Allow this to vary across different CCIs */ - is_identify->max_message_size =3D 9; /* 512 bytes - MCTP_CXL_MAILBOX_B= YTES */ + is_identify->max_message_size =3D (uint8_t)log2(cci->payload_max); *len_out =3D sizeof(*is_identify); return CXL_MBOX_SUCCESS; } =20 +/* CXL r3.1 section 8.2.9.1.3: Get Response Message Limit (Opcode 0003h) */ +static CXLRetCode cmd_get_response_msg_limit(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint8_t rsp_limit; + } QEMU_PACKED *get_rsp_msg_limit =3D (void *)payload_out; + QEMU_BUILD_BUG_ON(sizeof(*get_rsp_msg_limit) !=3D 1); + + get_rsp_msg_limit->rsp_limit =3D (uint8_t)log2(cci->payload_max); + + *len_out =3D sizeof(*get_rsp_msg_limit); + return CXL_MBOX_SUCCESS; +} + +/* CXL r3.1 section 8.2.9.1.4: Set Response Message Limit (Opcode 0004h) */ +static CXLRetCode cmd_set_response_msg_limit(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint8_t rsp_limit; + } QEMU_PACKED *in =3D (void *)payload_in; + QEMU_BUILD_BUG_ON(sizeof(*in) !=3D 1); + struct { + uint8_t rsp_limit; + } QEMU_PACKED *out =3D (void *)payload_out; + QEMU_BUILD_BUG_ON(sizeof(*out) !=3D 1); + + if (in->rsp_limit < 8 || in->rsp_limit > 10) { + return CXL_MBOX_INVALID_INPUT; + } + + cci->payload_max =3D 1 << in->rsp_limit; + out->rsp_limit =3D in->rsp_limit; + + *len_out =3D sizeof(*out); + return CXL_MBOX_SUCCESS; +} + static void cxl_set_dsp_active_bm(PCIBus *b, PCIDevice *d, void *private) { @@ -3105,6 +3155,10 @@ void cxl_initialize_t3_ld_cci(CXLCCI *cci, DeviceSta= te *d, DeviceState *intf, =20 static const struct cxl_cmd cxl_cmd_set_t3_fm_owned_ld_mctp[256][256] =3D { [INFOSTAT][IS_IDENTIFY] =3D { "IDENTIFY", cmd_infostat_identify, 0, 0= }, + [INFOSTAT][GET_RESPONSE_MSG_LIMIT] =3D { "GET_RESPONSE_MSG_LIMIT", + cmd_get_response_msg_limit, 0, = 0 }, + [INFOSTAT][SET_RESPONSE_MSG_LIMIT] =3D { "SET_RESPONSE_MSG_LIMIT", + cmd_set_response_msg_limit, 1, = 0 }, [LOGS][GET_SUPPORTED] =3D { "LOGS_GET_SUPPORTED", cmd_logs_get_support= ed, 0, 0 }, [LOGS][GET_LOG] =3D { "LOGS_GET_LOG", cmd_logs_get_log, 0x18, 0 }, --=20 2.43.0