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 1697E2D77E4 for ; Wed, 2 Jul 2025 16:08:02 +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=1751472484; cv=none; b=ZD0LAf6/9aY9vDx+gAkKblT8+/8jYges6ZMIaJg6CR88V0GAdfHCFEXRjyq93M2OfDvzPg0X6V5A97mbdRDgeWuecA5m+kE5cU5zUWphRdqL4qPNQ2ZLS8Dy1Ovd8ujvCYYYlbnWmkNC5JYrfxujr6Ykjn462IN8eIgffjCHrho= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751472484; c=relaxed/simple; bh=t+xqaju1ZvU1HcJ7HJou1jMUa6JgiVpgWeZ0wQOWnfo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=U/or3imc7uagrm1ljHgteP0BhC0XnvXCdGiW3Y89IFh6EAhOn4oqmiHd9m4QEhwu7CkqkINv/LQc8Tp9f5PXRICHqUG8WtrHuvkRd5iaEAOe6zM5sVSmM0ByZENgfBzKnVc06Tss0wu7tJykcct4KGbOmmVVrFQkrK3HUf+Pj3A= 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 [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bXPtZ3dRpz6L5k7; Thu, 3 Jul 2025 00:07:34 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id CC46F1400D4; Thu, 3 Jul 2025 00:08:00 +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 18:08:00 +0200 From: Jonathan Cameron To: , Michael Tsirkin , Fan Ni CC: , Subject: [PATCH qemu 11/11] hw/cxl: mailbox-utils: 0x5605 - FMAPI Initiate DC Release Date: Wed, 2 Jul 2025 17:02:17 +0100 Message-ID: <20250702160219.989731-12-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 0x5605 implemented per CXL r3.2 Spec Section 7.6.7.6.6 Signed-off-by: Anisa Su Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-mailbox-utils.c | 88 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 5ea0d07808..43a0d503aa 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -123,6 +123,7 @@ enum { #define SET_DC_REGION_CONFIG 0x2 #define GET_DC_REGION_EXTENT_LIST 0x3 #define INITIATE_DC_ADD 0x4 + #define INITIATE_DC_RELEASE 0x5 }; /* CCI Message Format CXL r3.1 Figure 7-19 */ @@ -3644,6 +3645,86 @@ static CXLRetCode cmd_fm_initiate_dc_add(const struct cxl_cmd *cmd, } } +#define CXL_EXTENT_REMOVAL_POLICY_MASK 0x0F +#define CXL_FORCED_REMOVAL_MASK (1 << 4) +/* + * CXL r3.2 Section 7.6.7.6.6: + * Initiate Dynamic Capacity Release (Opcode 5605h) + */ +static CXLRetCode cmd_fm_initiate_dc_release(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 flags; + uint8_t reg_num; + uint64_t length; + uint8_t tag[0x10]; + uint32_t ext_count; + CXLDCExtentRaw extents[]; + } QEMU_PACKED *in = (void *)payload_in; + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + int i, rc; + + switch (in->flags & CXL_EXTENT_REMOVAL_POLICY_MASK) { + case CXL_EXTENT_REMOVAL_POLICY_PRESCRIPTIVE: { + CXLDCExtentList updated_list; + uint32_t updated_list_size; + g_autofree CXLUpdateDCExtentListInPl *list = + g_malloc0(sizeof(*list) + + in->ext_count * sizeof(*list->updated_entries)); + + convert_raw_extents(in->extents, list, in->ext_count); + rc = cxl_detect_malformed_extent_list(ct3d, list); + if (rc) { + return rc; + } + + /* + * Fail with Invalid PA if an extent is pending and Forced Removal + * flag not set. + */ + if (!(in->flags & CXL_FORCED_REMOVAL_MASK)) { + for (i = 0; i < in->ext_count; i++) { + CXLDCExtentRaw ext = in->extents[i]; + /* + * Check requested extents don't overlap with pending + * extents. + */ + if (cxl_extent_groups_overlaps_dpa_range( + &ct3d->dc.extents_pending, + ext.start_dpa, + ext.len)) { + return CXL_MBOX_INVALID_PA; + } + } + } + + rc = cxl_dc_extent_release_dry_run(ct3d, + list, + &updated_list, + &updated_list_size); + if (rc) { + return rc; + } + cxl_create_dc_event_records_for_extents(ct3d, + DC_EVENT_RELEASE_CAPACITY, + in->extents, + in->ext_count); + return CXL_MBOX_SUCCESS; + } + default: { + qemu_log_mask(LOG_UNIMP, + "CXL extent removal policy not supported.\n"); + return CXL_MBOX_INVALID_INPUT; + } + } +} + static const struct cxl_cmd cxl_cmd_set[256][256] = { [INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT", cmd_infostat_bg_op_abort, 0, 0 }, @@ -3778,6 +3859,13 @@ 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][INITIATE_DC_RELEASE] = { "INIT_DC_RELEASE", + cmd_fm_initiate_dc_release, ~0, + (CXL_MBOX_CONFIG_CHANGE_COLD_RESET | + CXL_MBOX_CONFIG_CHANGE_CONV_RESET | + CXL_MBOX_CONFIG_CHANGE_CXL_RESET | + CXL_MBOX_IMMEDIATE_CONFIG_CHANGE | + CXL_MBOX_IMMEDIATE_DATA_CHANGE) }, }; /* -- 2.48.1