From patchwork Fri Jan 11 17:43:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Przemys=C5=82aw_Gaj?= X-Patchwork-Id: 10760437 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 795F41869 for ; Fri, 11 Jan 2019 17:44:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F0232A200 for ; Fri, 11 Jan 2019 17:44:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 529E22A210; Fri, 11 Jan 2019 17:44:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAD_ENC_HEADER,BAYES_00, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3B0212A200 for ; Fri, 11 Jan 2019 17:44:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=C3nsdjqmOz2K+24T0yDGAxTxuFmiFGUheJJK8GWnPEk=; b=kW+m8stQbtxUhu QxPhl+DaAvQUTZ/lSZoZHF9HHQyJBazbmXio4QnWhteCj91XdofAgw/O+mZhDjLQLD0SpzPxlKW7e zKdyCrRL3CMzZOBjsoWm8HS+f279WYg2t0bq4SjrsNNkLlvJCB4BMslV+gt1bETtmXwg+8kBZlm/N 39zEmTD5lsLgdsO91pb0V+2ily/kiMtuR5xoOQANq+qefzi0rJABxL3oKFDDlI6/H3lbOpt9762VE l/LKx8k6vvhzMpSHIDq71tINDhUWm7EXTW5pah3ffllm3vHyf5f3byX/MVkl1NHiS/ybFoXeEXpV/ /4XloQCGcGNq6pkNz7iQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gi0r6-0004xq-Fq; Fri, 11 Jan 2019 17:44:28 +0000 Received: from mx0a-0014ca01.pphosted.com ([208.84.65.235]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gi0r2-0004wq-NU for linux-i3c@lists.infradead.org; Fri, 11 Jan 2019 17:44:26 +0000 Received: from pps.filterd (m0042385.ppops.net [127.0.0.1]) by mx0a-0014ca01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x0BHfYSl007015; Fri, 11 Jan 2019 09:44:23 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cadence.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=proofpoint; bh=rmCPaek7He04aK0OPqDEO5YgZgN9BjMdQQxFzieKMNk=; b=pso4cKtbKfECz8lXCTtGwZoKJ6OWFNVX4Frn0DMV+YbyCcYrDCDY/0IwqtL24yGGYYjd nDdXUDhxKpO3kLcAamZaFRDDS+FY2WH4ze5X2tCiT3PIBN0EEP7gd4Md4XxrZMzRi5hT HB73EPR8xZKyOqn9aas/YEMxK07TBLUvMx+N6mtd6KI92VTCDsQZVzK3l3RhqI5kViZA ddn5hixztKzCG5GZSWf7NfilOvOIzO0T4zVaRgr8RlRmQYLhsfqsm+19IXLtY9FpXhVA D3VOAvraqRWqx9cs+zCZmq95i7VDBACzJ517giCZmgwPd5y3wZgvw3PX6+n1o4mRed26 XA== Authentication-Results: cadence.com; spf=pass smtp.mailfrom=pgaj@cadence.com Received: from nam03-dm3-obe.outbound.protection.outlook.com (mail-dm3nam03lp2051.outbound.protection.outlook.com [104.47.41.51]) by mx0a-0014ca01.pphosted.com with ESMTP id 2px0jqesbd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Fri, 11 Jan 2019 09:44:22 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cadence.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rmCPaek7He04aK0OPqDEO5YgZgN9BjMdQQxFzieKMNk=; b=SszgikyFLrdWCEJx9XJWjHry2dB4oZjumxN3Kgqr0rF+PaMc1JBkHTmhJboilJQYVqafVHA0fDpVWilu+TpqHCoDnmM6v3RO+vdWra2Hy2gt6iWca8m9+3RldD3+9I0AJ8i5gZzQ4JAJMD1HIH641v4J5HJGONz7FDfoAFv3aFs= Received: from CO2PR07CA0067.namprd07.prod.outlook.com (2603:10b6:100::35) by SN6PR07MB4416.namprd07.prod.outlook.com (2603:10b6:805:59::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1516.14; Fri, 11 Jan 2019 17:44:18 +0000 Received: from BY2NAM05FT044.eop-nam05.prod.protection.outlook.com (2a01:111:f400:7e52::201) by CO2PR07CA0067.outlook.office365.com (2603:10b6:100::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1516.14 via Frontend Transport; Fri, 11 Jan 2019 17:44:18 +0000 Received-SPF: SoftFail (protection.outlook.com: domain of transitioning cadence.com discourages use of 199.43.4.28 as permitted sender) Received: from rmmaillnx1.cadence.com (199.43.4.28) by BY2NAM05FT044.mail.protection.outlook.com (10.152.100.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1537.10 via Frontend Transport; Fri, 11 Jan 2019 17:44:17 +0000 Received: from maileu3.global.cadence.com (maileu3.cadence.com [10.160.88.99]) by rmmaillnx1.cadence.com (8.14.4/8.14.4) with ESMTP id x0BHiCgb001990 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK); Fri, 11 Jan 2019 12:44:15 -0500 X-CrossPremisesHeadersFilteredBySendConnector: maileu3.global.cadence.com Received: from maileu3.global.cadence.com (10.160.88.99) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Fri, 11 Jan 2019 18:44:14 +0100 Received: from lvlogina.cadence.com (10.165.176.102) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Fri, 11 Jan 2019 18:44:14 +0100 Received: from lvlogina.cadence.com (localhost.localdomain [127.0.0.1]) by lvlogina.cadence.com (8.14.4/8.14.4) with ESMTP id x0BHiDF1001936; Fri, 11 Jan 2019 17:44:13 GMT Received: (from pgaj@localhost) by lvlogina.cadence.com (8.14.4/8.14.4/Submit) id x0BHiDEH001935; Fri, 11 Jan 2019 17:44:13 GMT From: Przemyslaw Gaj To: Subject: [PATCH v2 2/3] i3c: master: cdns: add support for mastership request to Cadence I3C master driver. Date: Fri, 11 Jan 2019 17:43:36 +0000 Message-ID: X-Mailer: git-send-email 2.4.5 In-Reply-To: References: MIME-Version: 1.0 X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:199.43.4.28; IPV:CAL; SCL:-1; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(39860400002)(346002)(396003)(136003)(376002)(2980300002)(36092001)(189003)(199004)(4326008)(54906003)(53936002)(316002)(16586007)(42186006)(2906002)(305945005)(48376002)(2351001)(106466001)(50226002)(8676002)(105596002)(50466002)(8936002)(97736004)(118296001)(81156014)(81166006)(478600001)(26826003)(87636003)(107886003)(68736007)(47776003)(36756003)(6916009)(5660300001)(6666004)(486006)(126002)(356004)(186003)(426003)(26005)(76176011)(51416003)(86362001)(2616005)(336012)(476003)(69596002)(30864003)(11346002)(14444005)(446003); DIR:OUT; SFP:1101; SCL:1; SRVR:SN6PR07MB4416; H:rmmaillnx1.cadence.com; FPR:; SPF:SoftFail; LANG:en; PTR:InfoDomainNonexistent; MX:1; A:1; X-Microsoft-Exchange-Diagnostics: 1; BY2NAM05FT044; 1:3LM039erjY22cDrShT/m1gKIcO1SWgVGRcGA8qK919ztpdIu8vycYeCub/PNIs58rovSC3ewVKQ6HXtKlaOUSRhmUHl4YORYu4Vxf2EYuH7e30+ZyMCZH4xji6pjZVhngfBMt5r2xxnryTwdRHy6cQ== X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5382db33-fa7f-4cb5-a5a7-08d677ec6917 X-Microsoft-Antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600109)(711020)(2017052603328)(7153060); SRVR:SN6PR07MB4416; X-Microsoft-Exchange-Diagnostics: 1; SN6PR07MB4416; 3:r+XW0hrYIMVVx83r6K7li4Mz7UL9PYcMLi8HXxvloUdtZKwR7Zc086lrVBcQtZLU2iyFb6zZeRTC3B78drcDsqv3DNdOiRNQB2fDYn9GV9oRB5ktdZs6B/PneTIUKIveCZv4ak7IcqGxa4GbWcFXn4Pgn5Ub6DsPpRoEXpY0FHI7x9xrilDfXC+ik8jNN+OVRjLnyXicUiMtbhXWHyG+i0TI8xm9sRMIJY7gFCgCMXB7YjDdnBuA32DCJ3fqcn39bbJ8WCOfwJ5ilGlEy5puKS5CG8fuuGJXIKZ865wyIdLXa6tMrF030k3Fpplfg0TEQd+3h9cLwznHdRVMTCF0JD547Flx3mHs5773oQpuL8kc963Lq+DPC9qYHmLrOlk6; 25:VBeZpqjru68j/0WCdetst0KfFBaYjASFAx7ff9CQHDapzZXRYp9oiS/hGrcq0G7nj1V+aWRiu/Me7DHtmGbrYbFH7Zgdz6T4M0Pxj/ultF1Sxr8azcrrpAuNudRRyoFU4nzHycbYy2MIitaaIKd86LmLPVR0ftmoGV9VdJ5RYUH7SQaaf1s2QrME+Pd79gAW+yDT9j4pyVYjI4XH5tSIGIy70mVdl78jcw+lCme+n2Vyn9vg0QCYZomLNuJxqbFeFMnv03vSX3gOer2aMaQuxD7ou/m0iePLu4UtRA4RyZveEMyh4DkjXEDVWRLJc/eQEq8/DxvFP/5S5GUHe/TqSg== X-MS-TrafficTypeDiagnostic: SN6PR07MB4416: X-Microsoft-Exchange-Diagnostics: 1; SN6PR07MB4416; 31:Gl7EWji6cSMhsjRRBIosMQSM5JLAsrgPdZEm89SCARv92iofJC221zAFqwg8gndKcbJWOkNAtBgz+WCIAqngA8rXmI4+hr5pG4KhgRw8kG+s62Jt059iUn7gj9+rSYKl66bN1hUv/nUT24RHbRw4zqc6lZOsVhvtR1lgXz86szz34DLyhPtnjoARBp5FA2pRdh6ocq94BFAqi7mwkk9aNGkWLs4dPSNxjg3oUuxWDq0=; 20: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 X-Microsoft-Antispam-PRVS: X-Microsoft-Exchange-Diagnostics: 1; SN6PR07MB4416; 4:yVJY/UhMnNy48QqHxL/ryK5Pn5akJuq9zJjPVLk/iVy1/aQqWVIthpaBdwoyp5UwXxWwjASM4dalyzAJXHW2Qd3sW3jvupgvxyTEBXi0CJ7WmjBRY91v8Ulf1dlmhk9/pqv0yW04ynfUBvojh6oybiEr+PDLvcRAVvYZwe/KnKDt2IKz+bxO9LlAAZQDmJ0FjtM90gFDpbm9u+LHdLLDnfdgqPjKEfQiZdINIXZycTJvBHS6Qocn37Gz8qxVKgXsiGLOXdbODSRWw/JwK+XBSHn85NximL1TTxMHjdngIVHqCUdDgiXIepcSmQG/SPm+ X-Forefront-PRVS: 09144DB0F7 X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1; SN6PR07MB4416; 23:plaZ/2heE5B48urSo12Smpcr5c76RBDwErQLWDia/?= 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 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: 0N4um4cZmj3r/241C6aNUwQWeVbYYZxWG7FIah9blBmeWFA+T9xzmndrD9FD59vY2l6XLShYf23yS8T0AixF+e9TvTkc4g1gK79rc/3NdoGN5HPzrdVHFDHsezR/x+xY5D6hOnCnUTO6wXgTYGMoxQP/1SD8j3NoXU66o/Ws62fkxj/YYd76Y6LojLUycYQj1SO366zToaE58rp9NG5wxkYjST4GI61XxHN7+QezbefB6Ma5Z0l2zqNf1j6Om4ZbqwzZvNy/ipliK+Z2vJ9y4L8cejoVmhJoNy5iS87PWCLEQ2Xi/zHEBrS19P9QbPRyCPKPfgl0W80SqqfaekefFktR3V2/WDcv058QcKNay+bbOhOXK8LN9jUKIXhuuv7gbBkfY8LgnYUeVTG5MtCN23PfnaY4qcXi8LS1YL1q4rY= X-Microsoft-Exchange-Diagnostics: 1; SN6PR07MB4416; 6:U/2jw3Mp94p6rHPNnnr4nQYw7oHnPQrGAAFzuujUQdI9blJ1SkImNHeAJWUNihfMkKqnEoMZ+LsbJID2zYeuLlgHEmMRaGokaznN4TIjGwGTzekFGCXyjRHy0raHJPnvMksEQJTRK4W5STjh85DrGdcEZjtWUJwnSyrREflks8F/rmN+vQcPWhzY7ZSw0lDyce8+ot2iWHdG/xDO+ZD68Z23HO1reIYBcGpF7beB5UYSyBEDKUPhW9/byjHVsJf+fOHt8T7TLkQZDnqFpIOd260FuFLGpUy5D+PJ0kyO2c1Cz441EhtgoKW8N6ntlvgpFs/TXAucg6jZps2SDD4LJtkIEWvZxPyQckEB+VgmVKaf/hGfhDEkpWVHfXtpLjPkK8ZMc5gU8iZP87ELJse8HUe5+lBlz7vpi+SmOyXKW/fBoUJNwE+UtE1INcPdB0yMKQOt/N9oLfbcaHi25hrEjQ==; 5:jCCMMus6aWP1zGjs3mQBWVcvm860xk3pcwFJLvn3by2m2Sr+Zyc9hjAIiXcSfhl9efDAay/LSpi9kY6Tv3QSIIs8srVV6lLddNpHBcJXdHQKyZSXct8sLbXvf/esFJv9pDVQfqqKXlbnIVJdhmkdzeA6jYRaVvuT1T1uYssbZQNXdexWGRxfkxC3/65qf2A56j3KrnrVwpwsYzLosf7OMQ==; 7:PnI9vPws+3BEdhOPQ/Af7aB5SWmn/y4pSxLj3CA8ULG/jYbhWf+Zu1h1rj/8k/Sf/+7F0etyXDxOq8D5R66E1L43AycgAThetBBhHuZu1qD7dC111XQPPRtasQyud7EMngtR5NdkPwr9Ndy/MQEeqw== SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1; SN6PR07MB4416; 20:zcAVp0FiR0IxZ/5IitCP4vWkE7+JUQ7JAjCSpKuahdNFguKgS9PnkuoD1m7P4QKz2IxJWbP7XVgkiDtF718QbFPQELMDYCeLVltaU2UMD4ro7/0wdd127QQ3aHePbjeBGR+eOSKrucaOZL6a8DVoN5Xvd21CkbRZjEBa+L/uvwzk0SEz2FQitJ6vABwtNr90+9SaqSE+aZu9JwnIxXOCAxdIh4udPpm1MWZz9dYEgEjnJWobyOp0rGuV/e53ezaO X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jan 2019 17:44:17.6147 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5382db33-fa7f-4cb5-a5a7-08d677ec6917 X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9; Ip=[199.43.4.28]; Helo=[rmmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR07MB4416 X-Proofpoint-SPF-Result: pass X-Proofpoint-SPF-Record: v=spf1 include:_spf.salesforce.com include:mktomail.com include:spf-0014ca01.pphosted.com include:spf.protection.outlook.com include:auth.msgapp.com include:spf.mandrillapp.com ~all X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-01-11_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 priorityscore=1501 malwarescore=0 suspectscore=4 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901110144 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190111_094424_883005_7DB619AB X-CRM114-Status: GOOD ( 12.67 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-i3c@lists.infradead.org, Przemyslaw Gaj , psroka@cadence.com, rafalc@cadence.com, vitor.soares@synopsys.com Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for mastership request to Cadence I3C master driver. Signed-off-by: Przemyslaw Gaj Changes in v2: - Add work structs for mastership purpose - Add missing mastership disable feature --- drivers/i3c/master/i3c-master-cdns.c | 385 ++++++++++++++++++++++++++++++----- 1 file changed, 339 insertions(+), 46 deletions(-) diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c index 02a8297..578fc1e 100644 --- a/drivers/i3c/master/i3c-master-cdns.c +++ b/drivers/i3c/master/i3c-master-cdns.c @@ -157,6 +157,7 @@ #define SLV_IMR 0x48 #define SLV_ICR 0x4c #define SLV_ISR 0x50 +#define SLV_INT_DEFSLVS BIT(21) #define SLV_INT_TM BIT(20) #define SLV_INT_ERROR BIT(19) #define SLV_INT_EVENT_UP BIT(18) @@ -390,6 +391,12 @@ struct cdns_i3c_xfer { struct cdns_i3c_master { struct work_struct hj_work; + struct { + struct work_struct handover_work; + struct work_struct takeover_work; + struct work_struct request_work; + u32 ibir; + } mastership; struct i3c_master_controller base; u32 free_rr_slots; unsigned int maxdevs; @@ -664,6 +671,89 @@ static void cdns_i3c_master_unqueue_xfer(struct cdns_i3c_master *master, spin_unlock_irqrestore(&master->xferqueue.lock, flags); } +static void +cdns_i3c_master_i3c_dev_rr_to_info(struct cdns_i3c_master *master, + unsigned int slot, + struct i3c_device_info *info) +{ + u32 rr; + + memset(info, 0, sizeof(*info)); + rr = readl(master->regs + DEV_ID_RR0(slot)); + info->dyn_addr = DEV_ID_RR0_GET_DEV_ADDR(rr); + rr = readl(master->regs + DEV_ID_RR2(slot)); + info->dcr = rr; + info->bcr = rr >> 8; + info->pid = rr >> 16; + info->pid |= (u64)readl(master->regs + DEV_ID_RR1(slot)) << 16; +} + +static void +cdns_i3c_master_i2c_dev_rr_to_boardinfo(struct cdns_i3c_master *master, + unsigned int slot, + struct i2c_dev_boardinfo *info) +{ + u32 rr; + + memset(info, 0, sizeof(*info)); + rr = readl(master->regs + DEV_ID_RR0(slot)); + info->base.addr = DEV_ID_RR0_GET_DEV_ADDR(rr); + rr = readl(master->regs + DEV_ID_RR2(slot)); + info->lvr = rr; +} + +static +int cdns_i3c_sec_master_request_mastership(struct i3c_master_controller *m) +{ + struct cdns_i3c_master *master = to_cdns_i3c_master(m); + u32 status; + int ret; + + status = readl(master->regs + MST_STATUS0); + if (status & MST_STATUS0_MASTER_MODE) + return -EEXIST; + + status = readl(master->regs + SLV_STATUS1); + if (status & SLV_STATUS1_MR_DIS) + return -EBUSY; + + writel(readl(master->regs + CTRL) | CTRL_MST_INIT | CTRL_MST_ACK, + master->regs + CTRL); + + writel(SLV_INT_MR_DONE, master->regs + SLV_IER); + + ret = readl_poll_timeout(master->regs + MST_STATUS0, status, + status & MST_STATUS0_MASTER_MODE, 100, + 1000000); + + return ret; +} + +static void cdns_i3c_master_update_devs(struct i3c_master_controller *m) +{ + struct cdns_i3c_master *master = to_cdns_i3c_master(m); + u32 val, newdevs; + int slot; + struct i3c_device_info i3c_info; + struct i2c_dev_boardinfo i2c_info; + + newdevs = readl(master->regs + DEVS_CTRL) & DEVS_CTRL_DEVS_ACTIVE_MASK; + for (slot = 1; slot <= master->maxdevs; slot++) { + val = readl(master->regs + DEV_ID_RR0(slot)); + + if ((newdevs & BIT(slot)) && (val & DEV_ID_RR0_IS_I3C)) { + cdns_i3c_master_i3c_dev_rr_to_info(master, slot, + &i3c_info); + i3c_master_add_i3c_dev_locked(m, i3c_info.dyn_addr); + } else if ((newdevs & BIT(slot)) && + !(val & DEV_ID_RR0_IS_I3C)) { + cdns_i3c_master_i2c_dev_rr_to_boardinfo(master, slot, + &i2c_info); + i3c_master_add_i2c_dev(m, &i2c_info); + } + } +} + static enum i3c_error_code cdns_i3c_cmd_get_err(struct cdns_i3c_cmd *cmd) { switch (cmd->error) { @@ -1045,22 +1135,6 @@ static void cdns_i3c_master_bus_cleanup(struct i3c_master_controller *m) cdns_i3c_master_disable(master); } -static void cdns_i3c_master_dev_rr_to_info(struct cdns_i3c_master *master, - unsigned int slot, - struct i3c_device_info *info) -{ - u32 rr; - - memset(info, 0, sizeof(*info)); - rr = readl(master->regs + DEV_ID_RR0(slot)); - info->dyn_addr = DEV_ID_RR0_GET_DEV_ADDR(rr); - rr = readl(master->regs + DEV_ID_RR2(slot)); - info->dcr = rr; - info->bcr = rr >> 8; - info->pid = rr >> 16; - info->pid |= (u64)readl(master->regs + DEV_ID_RR1(slot)) << 16; -} - static void cdns_i3c_master_upd_i3c_scl_lim(struct cdns_i3c_master *master) { struct i3c_master_controller *m = &master->base; @@ -1259,15 +1333,17 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m) prescl1 = PRESCL_CTRL1_OD_LOW(ncycles); writel(prescl1, master->regs + PRESCL_CTRL1); - /* Get an address for the master. */ - ret = i3c_master_get_free_addr(m, 0); - if (ret < 0) - return ret; + if (!m->secondary) { + /* Get an address for the master. */ + ret = i3c_master_get_free_addr(m, 0); + if (ret < 0) + return ret; - writel(prepare_rr0_dev_address(ret) | DEV_ID_RR0_IS_I3C, - master->regs + DEV_ID_RR0(0)); + writel(prepare_rr0_dev_address(ret) | DEV_ID_RR0_IS_I3C, + master->regs + DEV_ID_RR0(0)); + } - cdns_i3c_master_dev_rr_to_info(master, 0, &info); + cdns_i3c_master_i3c_dev_rr_to_info(master, 0, &info); if (info.bcr & I3C_BCR_HDR_CAP) info.hdr_cap = I3C_CCC_HDR_MODE(I3C_HDR_DDR); @@ -1289,6 +1365,23 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m) return 0; } +static +struct i3c_dev_desc *cdns_i3c_get_ibi_device(struct cdns_i3c_master *master, + u32 ibir) +{ + struct i3c_dev_desc *dev; + u32 id = IBIR_SLVID(ibir); + + if (id >= master->ibi.num_slots || (ibir & IBIR_ERROR)) + return NULL; + + dev = master->ibi.slots[id]; + if (!dev) + return NULL; + + return dev; +} + static void cdns_i3c_master_handle_ibi(struct cdns_i3c_master *master, u32 ibir) { @@ -1366,27 +1459,105 @@ static void cnds_i3c_master_demux_ibis(struct cdns_i3c_master *master) case IBIR_TYPE_MR: WARN_ON(IBIR_XFER_BYTES(ibir) || (ibir & IBIR_ERROR)); + master->mastership.ibir = ibir; + queue_work(master->base.wq, + &master->mastership.handover_work); + break; default: break; } } } +static void cdns_i3c_master_bus_handoff(struct cdns_i3c_master *master) +{ + struct i3c_dev_desc *dev; + + dev = cdns_i3c_get_ibi_device(master, master->mastership.ibir); + + writel(MST_INT_MR_DONE, master->regs + MST_ICR); + + master->base.bus.cur_master = dev; +} + +static void cdns_i3c_master_mastership_takeover(struct work_struct *work) +{ + struct cdns_i3c_master *master = container_of(work, + struct cdns_i3c_master, + mastership.takeover_work); + + writel(SLV_INT_MR_DONE, master->regs + SLV_ICR); + + master->base.bus.cur_master = master->base.this; + + if (master->base.init_done) + i3c_master_bus_takeover(&master->base); + + writel(readl(master->regs + CTRL) & ~CTRL_MST_ACK, master->regs + CTRL); +} + +static void cdns_i3c_sec_master_mastership_request(struct work_struct *work) +{ + struct cdns_i3c_master *master = container_of(work, + struct cdns_i3c_master, + mastership.request_work); + + if (cdns_i3c_sec_master_request_mastership(&master->base)) + dev_err(&master->base.dev, "Mastership takeover failed\n"); + else + dev_err(&master->base.dev, "Mastership takeover succeed\n"); +} + +static void cdns_i3c_sec_master_event_up(struct cdns_i3c_master *master) +{ + u32 status; + + writel(SLV_INT_EVENT_UP, master->regs + SLV_ICR); + status = readl(master->regs + SLV_STATUS1); + if (!(status & SLV_STATUS1_MR_DIS) && + !master->base.bus.cur_master) { + queue_work(master->base.wq, &master->mastership.request_work); + } +} + +static void cdns_i3c_sec_mastership_done(struct cdns_i3c_master *master) +{ + writel(SLV_INT_MR_DONE, master->regs + SLV_ICR); + + queue_work(master->base.wq, &master->mastership.takeover_work); +} + static irqreturn_t cdns_i3c_master_interrupt(int irq, void *data) { struct cdns_i3c_master *master = data; u32 status; - status = readl(master->regs + MST_ISR); - if (!(status & readl(master->regs + MST_IMR))) - return IRQ_NONE; + if (master->base.bus.cur_master != master->base.this) { + status = readl(master->regs + SLV_ISR); - spin_lock(&master->xferqueue.lock); - cdns_i3c_master_end_xfer_locked(master, status); - spin_unlock(&master->xferqueue.lock); + if (!(status & readl(master->regs + SLV_IMR))) + return IRQ_NONE; + + if (status & SLV_INT_MR_DONE) + cdns_i3c_sec_mastership_done(master); + + if (status & SLV_INT_EVENT_UP) + cdns_i3c_sec_master_event_up(master); + } else { + status = readl(master->regs + MST_ISR); + if (!(status & readl(master->regs + MST_IMR))) + return IRQ_NONE; - if (status & MST_INT_IBIR_THR) - cnds_i3c_master_demux_ibis(master); + spin_lock(&master->xferqueue.lock); + cdns_i3c_master_end_xfer_locked(master, status); + spin_unlock(&master->xferqueue.lock); + + if (status & MST_INT_IBIR_THR) + cnds_i3c_master_demux_ibis(master); + + if (status & MST_INT_MR_DONE) + cdns_i3c_master_bus_handoff(master); + } return IRQ_HANDLED; } @@ -1455,30 +1626,46 @@ static int cdns_i3c_master_enable_ibi(struct i3c_dev_desc *dev) return ret; } -static int cdns_i3c_master_request_ibi(struct i3c_dev_desc *dev, - const struct i3c_ibi_setup *req) +static int cdns_i3c_master_find_ibi_slot(struct cdns_i3c_master *master, + struct i3c_dev_desc *dev, + s16 *slot) { - struct i3c_master_controller *m = i3c_dev_get_master(dev); - struct cdns_i3c_master *master = to_cdns_i3c_master(m); - struct cdns_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev); unsigned long flags; unsigned int i; - - data->ibi_pool = i3c_generic_ibi_alloc_pool(dev, req); - if (IS_ERR(data->ibi_pool)) - return PTR_ERR(data->ibi_pool); + int ret = -ENOENT; spin_lock_irqsave(&master->ibi.lock, flags); for (i = 0; i < master->ibi.num_slots; i++) { - if (!master->ibi.slots[i]) { - data->ibi = i; + /* + * We only need 'SIR' slots to describe IBI-capable devices. + * This slot may be used by mastership request interrupt, + * We can ruse the same 'SIR' map entry. + */ + if (!master->ibi.slots[i] || + master->ibi.slots[i] == dev) { master->ibi.slots[i] = dev; + *slot = i; + ret = 0; break; } } spin_unlock_irqrestore(&master->ibi.lock, flags); - if (i < master->ibi.num_slots) + return ret; +} + +static int cdns_i3c_master_request_ibi(struct i3c_dev_desc *dev, + const struct i3c_ibi_setup *req) +{ + struct i3c_master_controller *m = i3c_dev_get_master(dev); + struct cdns_i3c_master *master = to_cdns_i3c_master(m); + struct cdns_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev); + + data->ibi_pool = i3c_generic_ibi_alloc_pool(dev, req); + if (IS_ERR(data->ibi_pool)) + return PTR_ERR(data->ibi_pool); + + if (cdns_i3c_master_find_ibi_slot(master, dev, &data->ibi) == 0) return 0; i3c_generic_ibi_free_pool(data->ibi_pool); @@ -1487,6 +1674,37 @@ static int cdns_i3c_master_request_ibi(struct i3c_dev_desc *dev, return -ENOSPC; } +static int cdns_i3c_master_enable_mastership_events(struct i3c_dev_desc *dev) +{ + struct i3c_master_controller *m = i3c_dev_get_master(dev); + struct cdns_i3c_master *master = to_cdns_i3c_master(m); + struct cdns_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev); + unsigned long flags; + u32 sircfg, sirmap; + int ret; + + ret = cdns_i3c_master_find_ibi_slot(master, dev, &data->ibi); + if (ret) + return -ENOSPC; + + spin_lock_irqsave(&master->ibi.lock, flags); + sirmap = readl(master->regs + SIR_MAP_DEV_REG(data->ibi)); + sirmap &= ~SIR_MAP_DEV_CONF_MASK(data->ibi); + sircfg = SIR_MAP_DEV_ROLE(dev->info.bcr >> 6) | + SIR_MAP_DEV_DA(dev->info.dyn_addr) | + SIR_MAP_DEV_PL(dev->info.max_ibi_len) | + SIR_MAP_DEV_ACK; + + if (dev->info.bcr & I3C_BCR_MAX_DATA_SPEED_LIM) + sircfg |= SIR_MAP_DEV_SLOW; + + sirmap |= SIR_MAP_DEV_CONF(data->ibi, sircfg); + writel(sirmap, master->regs + SIR_MAP_DEV_REG(data->ibi)); + spin_unlock_irqrestore(&master->ibi.lock, flags); + + return 0; +} + static void cdns_i3c_master_free_ibi(struct i3c_dev_desc *dev) { struct i3c_master_controller *m = i3c_dev_get_master(dev); @@ -1502,6 +1720,39 @@ static void cdns_i3c_master_free_ibi(struct i3c_dev_desc *dev) i3c_generic_ibi_free_pool(data->ibi_pool); } +static int cdns_i3c_master_disable_mastership_events(struct i3c_dev_desc *dev) +{ + struct i3c_master_controller *m = i3c_dev_get_master(dev); + struct cdns_i3c_master *master = to_cdns_i3c_master(m); + struct cdns_i3c_i2c_dev_data *data = i3c_dev_get_master_data(dev); + unsigned long flags; + u32 sirmap; + int ret; + + ret = i3c_master_disec_locked(m, dev->info.dyn_addr, + I3C_CCC_EVENT_MR); + if (ret) + return ret; + + if (data->ibi < 0) + return -ENOENT; + + if (master->ibi.slots[data->ibi]->ibi->handler) + return 0; + + spin_lock_irqsave(&master->ibi.lock, flags); + sirmap = readl(master->regs + SIR_MAP_DEV_REG(data->ibi)); + sirmap &= ~SIR_MAP_DEV_CONF_MASK(data->ibi); + sirmap |= SIR_MAP_DEV_CONF(data->ibi, + SIR_MAP_DEV_DA(I3C_BROADCAST_ADDR)); + writel(sirmap, master->regs + SIR_MAP_DEV_REG(data->ibi)); + spin_unlock_irqrestore(&master->ibi.lock, flags); + + cdns_i3c_master_free_ibi(dev); + + return ret; +} + static void cdns_i3c_master_recycle_ibi_slot(struct i3c_dev_desc *dev, struct i3c_ibi_slot *slot) { @@ -1529,6 +1780,10 @@ static const struct i3c_master_controller_ops cdns_i3c_master_ops = { .request_ibi = cdns_i3c_master_request_ibi, .free_ibi = cdns_i3c_master_free_ibi, .recycle_ibi_slot = cdns_i3c_master_recycle_ibi_slot, + .request_mastership = cdns_i3c_sec_master_request_mastership, + .update_devs = cdns_i3c_master_update_devs, + .enable_mr_events = cdns_i3c_master_enable_mastership_events, + .disable_mr_events = cdns_i3c_master_disable_mastership_events }; static void cdns_i3c_master_hj(struct work_struct *work) @@ -1537,13 +1792,31 @@ static void cdns_i3c_master_hj(struct work_struct *work) struct cdns_i3c_master, hj_work); - i3c_master_do_daa(&master->base); + if (!master->base.secondary) + i3c_master_do_daa(&master->base); +} + +static void cdns_i3c_master_mastership_handover(struct work_struct *work) +{ + struct cdns_i3c_master *master = container_of(work, + struct cdns_i3c_master, + mastership.handover_work); + struct i3c_dev_desc *dev; + u32 ibir = master->mastership.ibir; + + dev = cdns_i3c_get_ibi_device(master, ibir); + if (!dev) + return; + + if (i3c_master_mastership_ack(&master->base, dev->info.dyn_addr)) + dev_err(&master->base.dev, "Mastership handover failed\n"); } static int cdns_i3c_master_probe(struct platform_device *pdev) { struct cdns_i3c_master *master; struct resource *res; + bool secondary = false; int ret, irq; u32 val; @@ -1585,15 +1858,27 @@ static int cdns_i3c_master_probe(struct platform_device *pdev) INIT_LIST_HEAD(&master->xferqueue.list); INIT_WORK(&master->hj_work, cdns_i3c_master_hj); + INIT_WORK(&master->mastership.handover_work, + cdns_i3c_master_mastership_handover); + INIT_WORK(&master->mastership.takeover_work, + cdns_i3c_master_mastership_takeover); + INIT_WORK(&master->mastership.request_work, + cdns_i3c_sec_master_mastership_request); + writel(0xffffffff, master->regs + MST_IDR); writel(0xffffffff, master->regs + SLV_IDR); ret = devm_request_irq(&pdev->dev, irq, cdns_i3c_master_interrupt, 0, dev_name(&pdev->dev), master); + if (ret) goto err_disable_sysclk; platform_set_drvdata(pdev, master); + val = readl(master->regs + MST_STATUS0); + if (!(val & MST_STATUS0_MASTER_MODE)) + secondary = true; + val = readl(master->regs + CONF_STATUS0); /* Device ID0 is reserved to describe this master. */ @@ -1609,6 +1894,7 @@ static int cdns_i3c_master_probe(struct platform_device *pdev) spin_lock_init(&master->ibi.lock); master->ibi.num_slots = CONF_STATUS1_IBI_HW_RES(val); + master->ibi.slots = devm_kcalloc(&pdev->dev, master->ibi.num_slots, sizeof(*master->ibi.slots), GFP_KERNEL); @@ -1617,13 +1903,19 @@ static int cdns_i3c_master_probe(struct platform_device *pdev) writel(IBIR_THR(1), master->regs + CMD_IBI_THR_CTRL); writel(MST_INT_IBIR_THR, master->regs + MST_IER); - writel(DEVS_CTRL_DEV_CLR_ALL, master->regs + DEVS_CTRL); + + if (!secondary) + writel(DEVS_CTRL_DEV_CLR_ALL, master->regs + DEVS_CTRL); ret = i3c_master_register(&master->base, &pdev->dev, - &cdns_i3c_master_ops, false); + &cdns_i3c_master_ops, secondary); if (ret) goto err_disable_sysclk; + if (secondary) + writel(SLV_INT_EVENT_UP, + master->regs + SLV_IER); + return 0; err_disable_sysclk: @@ -1666,6 +1958,7 @@ static struct platform_driver cdns_i3c_master = { module_platform_driver(cdns_i3c_master); MODULE_AUTHOR("Boris Brezillon "); +MODULE_AUTHOR("Przemyslaw Gaj "); MODULE_DESCRIPTION("Cadence I3C master driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:cdns-i3c-master");