From nobody Mon Feb 9 02:28:12 2026 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=1643047434; cv=none; d=zohomail.com; s=zohoarc; b=GHriTKHY1Xw5w5IlLdZchnkOdgzEF2sPzD7hzYHhkXAymeRyytjPZn2Ci4Ehv5ICcEmKxdzzl0sEpF6N5wY8hXTCxAGKN4MI2YKwqSXJ4VyLpYYHylT2Q7QwifVjxrasS4wvPvIYvd1xiDalZUIOFFX+jlU6bRzEq8aPO9lffsc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1643047434; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=g0J5qsS8237NVyFJ+b4one49AKzJlmtsdofkDi8h6XI=; b=F1zrB0KA59xjjMMUe6W5Sj/KQSizQEs8voB64JN4flTn+LG0RDWFpustjHRXTKXMxHoxRv7AZzedeo56fbH6HpE+mqtjWj87XsK2z5DmE/LPNjKIKXWcfQloCyayfd6GVLVnFaCVMsb1mfDZXupClMqLiLR01n/9oZh7OlCRhTw= 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 1643047434491142.93419333114264; Mon, 24 Jan 2022 10:03:54 -0800 (PST) Received: from localhost ([::1]:33540 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nC3h3-0006m0-J1 for importer@patchew.org; Mon, 24 Jan 2022 13:03:53 -0500 Received: from eggs.gnu.org ([209.51.188.92]:58898) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3Bk-0007Kz-EY for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:31:34 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2196) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nC3Bd-0001X8-Pq for qemu-devel@nongnu.org; Mon, 24 Jan 2022 12:31:27 -0500 Received: from fraeml708-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4JjH4c73MMz67mXw; Tue, 25 Jan 2022 01:28:00 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml708-chm.china.huawei.com (10.206.15.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 24 Jan 2022 18:31:23 +0100 Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 24 Jan 2022 17:31:23 +0000 To: , Marcel Apfelbaum , "Michael S . Tsirkin" , Igor Mammedov CC: , Ben Widawsky , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Peter Maydell , , Shameerali Kolothum Thodi , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Saransh Gupta1 , Shreyas Shah , Chris Browy , Samarth Saxena , "Dan Williams" Subject: [PATCH v4 28/42] hw/cxl/component: Add utils for interleave parameter encoding/decoding Date: Mon, 24 Jan 2022 17:16:51 +0000 Message-ID: <20220124171705.10432-29-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> References: <20220124171705.10432-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhreml740-chm.china.huawei.com (10.201.108.190) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected 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_H4=0.001, RCVD_IN_MSPIKE_WL=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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Reply-to: Jonathan Cameron From: Jonathan Cameron via X-ZM-MESSAGEID: 1643047437698100005 Content-Type: text/plain; charset="utf-8" From: Jonathan Cameron Both registers and the CFMWS entries in CDAT use simple encodings for the number of interleave ways and the interleave granularity. Introduce simple conversion functions to/from the unencoded number / size. So far the iw decode has not been needed so is it not implemented. Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-component-utils.c | 34 ++++++++++++++++++++++++++++++++++ include/hw/cxl/cxl_component.h | 8 ++++++++ 2 files changed, 42 insertions(+) diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index 5007b29ebb..be2c5599d6 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -9,6 +9,7 @@ =20 #include "qemu/osdep.h" #include "qemu/log.h" +#include "qapi/error.h" #include "hw/pci/pci.h" #include "hw/cxl/cxl.h" =20 @@ -210,3 +211,36 @@ void cxl_component_create_dvsec(CXLComponentState *cxl= , uint16_t length, range_init_nofail(&cxl->dvsecs[type], cxl->dvsec_offset, length); cxl->dvsec_offset +=3D length; } + +uint8_t cxl_interleave_ways_enc(int iw, Error **errp) +{ + switch (iw) { + case 1: return 0x0; + case 2: return 0x1; + case 4: return 0x2; + case 8: return 0x3; + case 16: return 0x4; + case 3: return 0x8; + case 6: return 0x9; + case 12: return 0xa; + default: + error_setg(errp, "Interleave ways: %d not supported", iw); + return 0; + } +} + +uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp) +{ + switch (gran) { + case 256: return 0; + case 512: return 1; + case 1024: return 2; + case 2048: return 3; + case 4096: return 4; + case 8192: return 5; + case 16384: return 6; + default: + error_setg(errp, "Interleave granularity: %lu invalid", gran); + return 0; + } +} diff --git a/include/hw/cxl/cxl_component.h b/include/hw/cxl/cxl_component.h index 30e576351d..d30c3f4716 100644 --- a/include/hw/cxl/cxl_component.h +++ b/include/hw/cxl/cxl_component.h @@ -193,4 +193,12 @@ void cxl_component_register_init_common(uint32_t *reg_= state, void cxl_component_create_dvsec(CXLComponentState *cxl_cstate, uint16_t le= ngth, uint16_t type, uint8_t rev, uint8_t *body); =20 +uint8_t cxl_interleave_ways_enc(int iw, Error **errp); +uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp); + +static inline hwaddr cxl_decode_ig(int ig) +{ + return 1 << (ig + 8); +} + #endif --=20 2.32.0