From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 B1AF0277CBE for ; Wed, 2 Jul 2025 16:06:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751472391; cv=none; b=OcQ/33Yq2sWu1g6JDw6CTJAxDiMfBNqVQOginB4Nzzq0qC8S/SvAFSoJqjGAJ2awQKgWserMb3Jdq3qBoUzb+6EbeIJO7oklxJeK9/SzxcdmAcpakxJjqn7q8D1CQpvwklYPLSp/ovWIqHyptcHo8TB8TpTcOSjuKagwBTK5xQo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751472391; c=relaxed/simple; bh=Rw3xi8VgRuMJHDBU48Ok8sciaNFtbX7yXVDQH2h6fDk=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=UgvLrsAbmZexU03kHPD/zhE8rK7xJkbdDANnE+1beAOpKPw/FN2g3Rylj3MUm9GjlG3yKL3veSpQEAJKyqc3UdWG0LBP9cxb/ed9KcsBvoAegbQIcja3nCfB2jJOZ8tdcoF2DxXZy/Fm3epP8SaaJ+/7opUFIAXAUbQkR9Yoifk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.216]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bXPrC6G2Yz6M4fv; Thu, 3 Jul 2025 00:05:31 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id AB3CD1402E9; Thu, 3 Jul 2025 00:06:27 +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, 2 Jul 2025 18:06:27 +0200 From: Jonathan Cameron To: , Michael Tsirkin , Fan Ni CC: , Subject: [PATCH qemu 08/11] hw/cxl: mailbox-utils: 0x5603 - FMAPI Get DC Region Extent Lists Date: Wed, 2 Jul 2025 17:02:14 +0100 Message-ID: <20250702160219.989731-9-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250702160219.989731-1-Jonathan.Cameron@huawei.com> References: <20250702160219.989731-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To frapeml500008.china.huawei.com (7.182.85.71) From: Anisa Su FM DCD Management command 0x5603 implemented per CXL r3.2 Spec Section 7.6.7.6.4 Very similar to previously implemented command 0x4801. Reviewed-by: Fan Ni Signed-off-by: Anisa Su Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-mailbox-utils.c | 76 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 1fc453f70d..24e4ba0200 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -122,6 +122,7 @@ enum { #define GET_DCD_INFO 0x0 #define GET_HOST_DC_REGION_CONFIG 0x1 #define SET_DC_REGION_CONFIG 0x2 + #define GET_DC_REGION_EXTENT_LIST 0x3 }; /* CCI Message Format CXL r3.1 Figure 7-19 */ @@ -3469,6 +3470,79 @@ static CXLRetCode cmd_fm_set_dc_region_config(const struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +/* CXL r3.2 section 7.6.7.6.4 Get DC Region Extent Lists (Opcode 5603h) */ +static CXLRetCode cmd_fm_get_dc_region_extent_list(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint16_t host_id; + uint8_t rsvd[2]; + uint32_t extent_cnt; + uint32_t start_extent_id; + } QEMU_PACKED *in = (void *)payload_in; + struct { + uint16_t host_id; + uint8_t rsvd[2]; + uint32_t start_extent_id; + uint32_t extents_returned; + uint32_t total_extents; + uint32_t list_generation_num; + uint8_t rsvd2[4]; + CXLDCExtentRaw records[]; + } QEMU_PACKED *out = (void *)payload_out; + QEMU_BUILD_BUG_ON(sizeof(*in) != 0xc); + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + CXLDCExtent *ent; + CXLDCExtentRaw *out_rec; + uint16_t record_count = 0, record_done = 0, i = 0; + uint16_t out_pl_len, max_size; + + if (in->host_id != 0) { + return CXL_MBOX_INVALID_INPUT; + } + + if (in->start_extent_id > ct3d->dc.nr_extents_accepted) { + return CXL_MBOX_INVALID_INPUT; + } + + record_count = MIN(in->extent_cnt, + ct3d->dc.nr_extents_accepted - in->start_extent_id); + max_size = CXL_MAILBOX_MAX_PAYLOAD_SIZE - sizeof(*out); + record_count = MIN(record_count, max_size / sizeof(out->records[0])); + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + + stw_le_p(&out->host_id, in->host_id); + stl_le_p(&out->start_extent_id, in->start_extent_id); + stl_le_p(&out->extents_returned, record_count); + stl_le_p(&out->total_extents, ct3d->dc.nr_extents_accepted); + stl_le_p(&out->list_generation_num, ct3d->dc.ext_list_gen_seq); + + if (record_count > 0) { + QTAILQ_FOREACH(ent, &ct3d->dc.extents, node) { + if (i++ < in->start_extent_id) { + continue; + } + out_rec = &out->records[record_done]; + stq_le_p(&out_rec->start_dpa, ent->start_dpa); + stq_le_p(&out_rec->len, ent->len); + memcpy(&out_rec->tag, ent->tag, 0x10); + stw_le_p(&out_rec->shared_seq, ent->shared_seq); + + record_done++; + if (record_done == record_count) { + break; + } + } + } + + *len_out = out_pl_len; + return CXL_MBOX_SUCCESS; +} + static const struct cxl_cmd cxl_cmd_set[256][256] = { [INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT", cmd_infostat_bg_op_abort, 0, 0 }, @@ -3594,6 +3668,8 @@ static const struct cxl_cmd cxl_cmd_set_fm_dcd[256][256] = { CXL_MBOX_CONFIG_CHANGE_CXL_RESET | CXL_MBOX_IMMEDIATE_CONFIG_CHANGE | CXL_MBOX_IMMEDIATE_DATA_CHANGE) }, + [FMAPI_DCD_MGMT][GET_DC_REGION_EXTENT_LIST] = { "GET_DC_REGION_EXTENT_LIST", + cmd_fm_get_dc_region_extent_list, 12, 0 }, }; /* -- 2.48.1