From patchwork Thu Apr 20 09:00:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pawel Laszczak X-Patchwork-Id: 13218165 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29851C77B73 for ; Thu, 20 Apr 2023 09:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234309AbjDTJHD (ORCPT ); Thu, 20 Apr 2023 05:07:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234034AbjDTJGX (ORCPT ); Thu, 20 Apr 2023 05:06:23 -0400 Received: from mx0a-0014ca01.pphosted.com (mx0a-0014ca01.pphosted.com [208.84.65.235]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 532EB5264; Thu, 20 Apr 2023 02:01:51 -0700 (PDT) Received: from pps.filterd (m0042385.ppops.net [127.0.0.1]) by mx0a-0014ca01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33K5rkou017715; Thu, 20 Apr 2023 02:01:18 -0700 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-transfer-encoding : content-type; s=proofpoint; bh=pdDQZDEO15RovlATpAjqw8YuP/aMySbcLF+RIrQwMfU=; b=aEsvlumPenXc/D8C+BkKZjk6OBZqplYuvakSHm8r795rlTaah1BiDheRWh13gwe1vvyo P8AN5RGDAp9d++8KUKBnjnYRTEp0iP2ozza+MUCwshyshxEQXattJWmdoHbMsdIiChnX XcJjYNujGLXKiN46zdm1f83XefL7/FKsopYc5kofv0sEfFWEyWMGI1ohzGrSIwcqtF73 mv/Pjs2YMZWiSwYZDpR+0bodncp/YAovNfABA/AkGdyjJX5+XUSWbCMrAiRuVuBP59wt SPHO8jfDkD1hQrSHg44TZ5isEE5tI4pB1LPkRUHJWEmUrIXkoLDJDBUbtlc94cxjATz3 yQ== Received: from nam12-mw2-obe.outbound.protection.outlook.com (mail-mw2nam12lp2043.outbound.protection.outlook.com [104.47.66.43]) by mx0a-0014ca01.pphosted.com (PPS) with ESMTPS id 3q2dncxarr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 20 Apr 2023 02:01:18 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=USHoaOoqW4xLL+X2odx9KbOtPWYJoP9f9UN0ExKCrBS+wyVPBxWwLGf/41VnpNgi+PLOhhkG8yzxFX84tAhY3obgGpf+rYO7EJaw2t+w2K9ljqSjbuGFBKKmG64Yx/m7gz/qVzsWSFRX4zDCanldU4xzZpWy0vNS01kUIN6puZQ/HV05FrEcvMaQ2ok73eyulPUL5PrFRdLl9MmGDoWyUnIY3xa/UuFWcpwPggqr7oDbdnFyNEZj+qbCGgwNhSWYrpRHljDUSK26HXWjeIwtTasIbHUvFHcrzcJi2iJHBPW84OPza9iHj/wHVYYCW0gdddQg2pSXLntt1qaYkDYLhA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=pdDQZDEO15RovlATpAjqw8YuP/aMySbcLF+RIrQwMfU=; b=ibsk4Aq2xEuMXfF+vZ3YipsLUV0CjJ5+pGRVnFGzLgHK93iRI0a5jVCqboR0143pwzdg26uG5xLEYcWTJHkKnoc/4bpvbTyP6VO7JstaJPr4uDo/eoy21KU6UGzh7oVR1BLAjnMNsMBe5H5NMRVIXdM0ORqA/phHHv262E+K3VuAXJOAoZSetK2I1bavT+6jkDLiweEKyaeMsCtcSxUzCiwblK0PDQ7JXky/2CtYD9bpk9umEeDF8kMCTkJZa6LWP/lNI6tQe/MhG6CyLL31mGtL+K6I/dfTEv4ltW6FgE5qBsXUJu8VYOSVCdwfmy0kORwBVR/s0iX6PEl+F0ojrw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 158.140.1.147) smtp.rcpttodomain=bootlin.com smtp.mailfrom=cadence.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=cadence.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cadence.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=pdDQZDEO15RovlATpAjqw8YuP/aMySbcLF+RIrQwMfU=; b=JmbAPKu8OHsqQjKwyxCvOFpurU8eUsU8DVeMteIj+X64a0bKU8G3+Qn+dbMEu7Jx3YLs80HrKAIfnMZrdnH/fPRYdrA+UVO+9tNs0rTNzZaUhYlm1DMaCf19qxEa7jlHweS/j7h+vrX5SRWiK3kED9HYc4MoOGj7Lc1Y6rOO2MY= Received: from DS7PR03CA0221.namprd03.prod.outlook.com (2603:10b6:5:3ba::16) by DM4PR07MB9402.namprd07.prod.outlook.com (2603:10b6:8:45::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6319.21; Thu, 20 Apr 2023 09:01:13 +0000 Received: from DM6NAM12FT075.eop-nam12.prod.protection.outlook.com (2603:10b6:5:3ba:cafe::46) by DS7PR03CA0221.outlook.office365.com (2603:10b6:5:3ba::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6319.22 via Frontend Transport; Thu, 20 Apr 2023 09:01:13 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 158.140.1.147) smtp.mailfrom=cadence.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=cadence.com; Received-SPF: Pass (protection.outlook.com: domain of cadence.com designates 158.140.1.147 as permitted sender) receiver=protection.outlook.com; client-ip=158.140.1.147; helo=sjmaillnx1.cadence.com; pr=C Received: from sjmaillnx1.cadence.com (158.140.1.147) by DM6NAM12FT075.mail.protection.outlook.com (10.13.178.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6340.11 via Frontend Transport; Thu, 20 Apr 2023 09:01:13 +0000 Received: from maileu4.global.cadence.com (eudvw-maileu4.cadence.com [10.160.110.201]) by sjmaillnx1.cadence.com (8.14.4/8.14.4) with ESMTP id 33K91A76014545 (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Apr 2023 02:01:11 -0700 Received: from maileu4.global.cadence.com (10.160.110.201) by maileu4.global.cadence.com (10.160.110.201) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Thu, 20 Apr 2023 11:01:10 +0200 Received: from eu-cn02.cadence.com (10.160.89.185) by maileu4.global.cadence.com (10.160.110.201) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7 via Frontend Transport; Thu, 20 Apr 2023 11:01:10 +0200 Received: from eu-cn02.cadence.com (localhost.localdomain [127.0.0.1]) by eu-cn02.cadence.com (8.14.7/8.14.7) with ESMTP id 33K91ATg081001; Thu, 20 Apr 2023 05:01:10 -0400 Received: (from pawell@localhost) by eu-cn02.cadence.com (8.14.7/8.14.7/Submit) id 33K91AlK080998; Thu, 20 Apr 2023 05:01:10 -0400 From: Pawel Laszczak To: CC: , , , , , , , , , , , , Pawel Laszczak Subject: [PATCH v2 1/4] usb: cdns2: Device side header file for CDNS2 driver Date: Thu, 20 Apr 2023 05:00:58 -0400 Message-ID: <20230420090101.80812-2-pawell@cadence.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20230420090101.80812-1-pawell@cadence.com> References: <20230420090101.80812-1-pawell@cadence.com> MIME-Version: 1.0 X-CrossPremisesHeadersFilteredBySendConnector: maileu4.global.cadence.com X-OrganizationHeadersPreserved: maileu4.global.cadence.com X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM12FT075:EE_|DM4PR07MB9402:EE_ X-MS-Office365-Filtering-Correlation-Id: 466ee8d3-d0fd-4d48-c219-08db417dcac6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:158.140.1.147;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:sjmaillnx1.cadence.com;PTR:unknown.Cadence.COM;CAT:NONE;SFS:(13230028)(4636009)(346002)(136003)(396003)(39860400002)(376002)(36092001)(451199021)(40470700004)(46966006)(36840700001)(478600001)(42186006)(54906003)(426003)(336012)(2616005)(107886003)(41300700001)(8936002)(86362001)(6666004)(30864003)(186003)(8676002)(7416002)(2906002)(40460700003)(47076005)(83380400001)(26005)(1076003)(5660300002)(36860700001)(36756003)(70586007)(70206006)(82310400005)(6916009)(316002)(4326008)(82740400003)(356005)(7636003)(40480700001)(473944003)(414714003);DIR:OUT;SFP:1101; X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Apr 2023 09:01:13.0704 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 466ee8d3-d0fd-4d48-c219-08db417dcac6 X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9;Ip=[158.140.1.147];Helo=[sjmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM12FT075.eop-nam12.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR07MB9402 X-Proofpoint-ORIG-GUID: 1BuwSJ5grw8W3EvZtVZOTkkZ7wZ8KmSC X-Proofpoint-GUID: 1BuwSJ5grw8W3EvZtVZOTkkZ7wZ8KmSC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-20_05,2023-04-18_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 spamscore=0 priorityscore=1501 suspectscore=0 clxscore=1015 mlxscore=0 mlxlogscore=683 bulkscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304200072 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Patch defines macros, registers and structures used by Device side driver. Signed-off-by: Pawel Laszczak --- drivers/usb/gadget/udc/cdns2/cdns2-gadget.h | 707 ++++++++++++++++++++ 1 file changed, 707 insertions(+) create mode 100644 drivers/usb/gadget/udc/cdns2/cdns2-gadget.h diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h new file mode 100644 index 000000000000..a0e8c4b50677 --- /dev/null +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h @@ -0,0 +1,707 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * USBHS-DEV device controller driver header file + * + * Copyright (C) 2023 Cadence. + * + * Author: Pawel Laszczak + */ + +#ifndef __LINUX_CDNS2_GADGET +#define __LINUX_CDNS2_GADGET + +#include +#include + +/* + * USBHS register interface. + * This corresponds to the USBHS Device Controller Interface. + */ + +/** + * struct cdns2_ep0_regs - endpoint 0 related registers. + * @rxbc: receive (OUT) 0 endpoint byte count register. + * @txbc: transmit (IN) 0 endpoint byte count register. + * @cs: 0 endpoint control and status register. + * @reserved1: reserved. + * @fifo: 0 endpoint fifo register. + * @reserved2: reserved. + * @setupdat: SETUP data register. + * @reserved4: reserved. + * @maxpack: 0 endpoint max packet size. + */ +struct cdns2_ep0_regs { + __u8 rxbc; + __u8 txbc; + __u8 cs; + __u8 reserved1[4]; + __u8 fifo; + __le32 reserved2[94]; + __u8 setupdat[8]; + __u8 reserved4[88]; + __u8 maxpack; +} __packed; + +/* EP0CS - bitmasks. */ +/* Endpoint 0 stall bit for status stage. */ +#define EP0CS_STALL BIT(0) +/* HSNAK bit. */ +#define EP0CS_HSNAK BIT(1) +/* IN 0 endpoint busy bit. */ +#define EP0CS_TXBSY_MSK BIT(2) +/* OUT 0 endpoint busy bit. */ +#define EP0CS_RXBSY_MSK BIT(3) +/* Send STALL in the data stage phase. */ +#define EP0CS_DSTALL BIT(4) +/* SETUP buffer content was changed. */ +#define EP0CS_CHGSET BIT(7) + +/* EP0FIFO - bitmasks. */ +/* Direction. */ +#define EP0_FIFO_IO_TX BIT(4) +/* FIFO auto bit. */ +#define EP0_FIFO_AUTO BIT(5) +/* FIFO commit bit. */ +#define EP0_FIFO_COMMIT BIT(6) +/* FIFO access bit. */ +#define EP0_FIFO_ACCES BIT(7) + +/** + * struct cdns2_epx_base - base endpoint registers. + * @rxbc: OUT endpoint byte count register. + * @rxcon: OUT endpoint control register. + * @rxcs: OUT endpoint control and status register. + * @txbc: IN endpoint byte count register. + * @txcon: IN endpoint control register. + * @txcs: IN endpoint control and status register. + */ +struct cdns2_epx_base { + __le16 rxbc; + __u8 rxcon; + __u8 rxcs; + __le16 txbc; + __u8 txcon; + __u8 txcs; +} __packed; + +/* rxcon/txcon - endpoint control register bitmasks. */ +/* Endpoint buffering: 0 - single buffering ... 3 - quad buffering. */ +#define EPX_CON_BUF GENMASK(1, 0) +/* Endpoint type. */ +#define EPX_CON_TYPE GENMASK(3, 2) +/* Endpoint type: isochronous. */ +#define EPX_CON_TYPE_ISOC 0x4 +/* Endpoint type: bulk. */ +#define EPX_CON_TYPE_BULK 0x8 +/* Endpoint type: interrupt. */ +#define EPX_CON_TYPE_INT 0xC +/* Number of packets per microframe. */ +#define EPX_CON_ISOD GENMASK(5, 4) +#define EPX_CON_ISOD_SHIFT 0x4 +/* Endpoint stall bit. */ +#define EPX_CON_STALL BIT(6) +/* Endpoint enable bit.*/ +#define EPX_CON_VAL BIT(7) + +/* rxcs/txcs - endpoint control and status bitmasks. */ +/* Data sequence error for the ISO endpoint. */ +#define EPX_CS_ERR(p) ((p) & BIT(0)) + +/** + * struct cdns2_epx_regs - endpoint 1..15 related registers. + * @reserved: reserved. + * @ep: none control endpoints array. + * @reserved2: reserved. + * @endprst: endpoint reset register. + * @reserved3: reserved. + * @isoautoarm: ISO auto-arm register. + * @reserved4: reserved. + * @isodctrl: ISO control register. + * @reserved5: reserved. + * @isoautodump: ISO auto dump enable register. + * @reserved6: reserved. + * @rxmaxpack: receive (OUT) Max packet size register. + * @reserved7: reserved. + * @rxstaddr: receive (OUT) start address endpoint buffer register. + * @reserved8: reserved. + * @txstaddr: transmit (IN) start address endpoint buffer register. + * @reserved9: reserved. + * @txmaxpack: transmit (IN) Max packet size register. + */ +struct cdns2_epx_regs { + __le32 reserved[2]; + struct cdns2_epx_base ep[15]; + __u8 reserved2[290]; + __u8 endprst; + __u8 reserved3[41]; + __le16 isoautoarm; + __u8 reserved4[10]; + __le16 isodctrl; + __le16 reserved5; + __le16 isoautodump; + __le32 reserved6; + __le16 rxmaxpack[15]; + __le32 reserved7[65]; + __le32 rxstaddr[15]; + __u8 reserved8[4]; + __le32 txstaddr[15]; + __u8 reserved9[98]; + __le16 txmaxpack[15]; +} __packed; + +/* ENDPRST - bitmasks. */ +/* Endpoint number. */ +#define ENDPRST_EP GENMASK(3, 0) +/* IN direction bit. */ +#define ENDPRST_IO_TX BIT(4) +/* Toggle reset bit. */ +#define ENDPRST_TOGRST BIT(5) +/* FIFO reset bit. */ +#define ENDPRST_FIFORST BIT(6) +/* Toggle status and reset bit. */ +#define ENDPRST_TOGSETQ BIT(7) + +/** + * struct cdns2_interrupt_regs - USB interrupt related registers. + * @reserved: reserved. + * @usbirq: USB interrupt request register. + * @extirq: external interrupt request register. + * @rxpngirq: external interrupt request register. + * @reserved1: reserved. + * @usbien: USB interrupt enable register. + * @extien: external interrupt enable register. + * @reserved2: reserved. + * @usbivect: USB interrupt vector register. + */ +struct cdns2_interrupt_regs { + __u8 reserved[396]; + __u8 usbirq; + __u8 extirq; + __le16 rxpngirq; + __le16 reserved1[4]; + __u8 usbien; + __u8 extien; + __le16 reserved2[3]; + __u8 usbivect; +} __packed; + +/* EXTIRQ and EXTIEN - bitmasks. */ +/* VBUS fault fall interrupt. */ +#define EXTIRQ_VBUSFAULT_FALL BIT(0) +/* VBUS fault fall interrupt. */ +#define EXTIRQ_VBUSFAULT_RISE BIT(1) +/* Wake up interrupt bit. */ +#define EXTIRQ_WAKEUP BIT(7) + +/* USBIEN and USBIRQ - bitmasks. */ +/* SETUP data valid interrupt bit.*/ +#define USBIRQ_SUDAV BIT(0) +/* Start-of-frame interrupt bit. */ +#define USBIRQ_SOF BIT(1) +/* SETUP token interrupt bit. */ +#define USBIRQ_SUTOK BIT(2) +/* USB suspend interrupt bit. */ +#define USBIRQ_SUSPEND BIT(3) +/* USB reset interrupt bit. */ +#define USBIRQ_URESET BIT(4) +/* USB high-speed mode interrupt bit. */ +#define USBIRQ_HSPEED BIT(5) +/* Link Power Management interrupt bit. */ +#define USBIRQ_LPM BIT(7) + +#define USB_IEN_INIT (USBIRQ_SUDAV | USBIRQ_SUSPEND | USBIRQ_URESET \ + | USBIRQ_HSPEED | USBIRQ_LPM) +/** + * struct cdns2_usb_regs - USB controller registers. + * @reserved: reserved. + * @lpmctrl: LPM control register. + * @lpmclock: LPM clock register. + * @reserved2: reserved. + * @endprst: endpoint reset register. + * @usbcs: USB control and status register. + * @frmnr: USB frame counter register. + * @fnaddr: function Address register. + * @clkgate: clock gate register. + * @fifoctrl: FIFO control register. + * @speedctrl: speed Control register. + * @sleep_clkgate: sleep Clock Gate register. + * @reserved3: reserved. + * @cpuctrl: microprocessor control register. + */ +struct cdns2_usb_regs { + __u8 reserved[4]; + __u16 lpmctrl; + __u8 lpmclock; + __u8 reserved2[411]; + __u8 endprst; + __u8 usbcs; + __le16 frmnr; + __u8 fnaddr; + __u8 clkgate; + __u8 fifoctrl; + __u8 speedctrl; + __u8 sleep_clkgate; + __u8 reserved3[533]; + __u8 cpuctrl; +} __packed; + +/* LPMCTRL - bitmasks. */ +/* BESL (Best Effort Service Latency). */ +#define LPMCTRLLL_HIRD GENMASK(7, 4) +/* Last received Remote Wakeup field from LPM Extended Token packet. */ +#define LPMCTRLLH_BREMOTEWAKEUP BIT(8) +/* Reflects value of the lpmnyet bit located in the usbcs[1] register. */ +#define LPMCTRLLH_LPMNYET BIT(16) + +/* LPMCLOCK - bitmasks. */ +/* + * If bit is 1 the controller automatically turns off clock + * (utmisleepm goes to low), else the microprocessor should use + * sleep clock gate register to turn off clock. + */ +#define LPMCLOCK_SLEEP_ENTRY BIT(7) + +/* USBCS - bitmasks. */ +/* Send NYET handshake for the LPM transaction. */ +#define USBCS_LPMNYET BIT(2) +/* Remote wake-up bit. */ +#define USBCS_SIGRSUME BIT(5) +/* Software disconnect bit. */ +#define USBCS_DISCON BIT(6) +/* Indicates that a wakeup pin resumed the controller. */ +#define USBCS_WAKESRC BIT(7) + +/* FIFOCTRL - bitmasks. */ +/* Endpoint number. */ +#define FIFOCTRL_EP GENMASK(3, 0) +/* Direction bit. */ +#define FIFOCTRL_IO_TX BIT(4) +/* FIFO auto bit. */ +#define FIFOCTRL_FIFOAUTO BIT(5) +/* FIFO commit bit. */ +#define FIFOCTRL_FIFOCMIT BIT(6) +/* FIFO access bit. */ +#define FIFOCTRL_FIFOACC BIT(7) + +/* SPEEDCTRL - bitmasks. */ +/* Device works in Full Speed. */ +#define SPEEDCTRL_FS BIT(1) +/* Device works in High Speed. */ +#define SPEEDCTRL_HS BIT(2) +/* Force FS mode. */ +#define SPEEDCTRL_HSDISABLE BIT(7) + +/* CPUCTRL- bitmasks. */ +/* Controller reset bit. */ +#define CPUCTRL_SW_RST BIT(1) + +/** + * struct cdns2_adma_regs - ADMA controller registers. + * @conf: DMA global configuration register. + * @sts: DMA global Status register. + * @reserved1: reserved. + * @ep_sel: DMA endpoint select register. + * @ep_traddr: DMA endpoint transfer ring address register. + * @ep_cfg: DMA endpoint configuration register. + * @ep_cmd: DMA endpoint command register. + * @ep_sts: DMA endpoint status register. + * @reserved2: reserved. + * @ep_sts_en: DMA endpoint status enable register. + * @drbl: DMA doorbell register. + * @ep_ien: DMA endpoint interrupt enable register. + * @ep_ists: DMA endpoint interrupt status register. + * @axim_ctrl: AXI Master Control register. + * @axim_id: AXI Master ID register. + * @reserved3: reserved. + * @axim_cap: AXI Master Wrapper Extended Capability. + * @reserved4: reserved. + * @axim_ctrl0: AXI Master Wrapper Extended Capability Control Register 0. + * @axim_ctrl1: AXI Master Wrapper Extended Capability Control Register 1. + */ +struct cdns2_adma_regs { + __le32 conf; + __le32 sts; + __le32 reserved1[5]; + __le32 ep_sel; + __le32 ep_traddr; + __le32 ep_cfg; + __le32 ep_cmd; + __le32 ep_sts; + __le32 reserved2; + __le32 ep_sts_en; + __le32 drbl; + __le32 ep_ien; + __le32 ep_ists; + __le32 axim_ctrl; + __le32 axim_id; + __le32 reserved3; + __le32 axim_cap; + __le32 reserved4; + __le32 axim_ctrl0; + __le32 axim_ctrl1; +}; + +#define CDNS2_ADMA_REGS_OFFSET 0x400 + +/* DMA_CONF - bitmasks. */ +/* Reset USB device configuration. */ +#define DMA_CONF_CFGRST BIT(0) +/* Singular DMA transfer mode.*/ +#define DMA_CONF_DSING BIT(8) +/* Multiple DMA transfers mode.*/ +#define DMA_CONF_DMULT BIT(9) + +/* DMA_EP_CFG - bitmasks. */ +/* Endpoint enable. */ +#define DMA_EP_CFG_ENABLE BIT(0) + +/* DMA_EP_CMD - bitmasks. */ +/* Endpoint reset. */ +#define DMA_EP_CMD_EPRST BIT(0) +/* Transfer descriptor ready. */ +#define DMA_EP_CMD_DRDY BIT(6) +/* Data flush. */ +#define DMA_EP_CMD_DFLUSH BIT(7) + +/* DMA_EP_STS - bitmasks. */ +/* Interrupt On Complete. */ +#define DMA_EP_STS_IOC BIT(2) +/* Interrupt on Short Packet. */ +#define DMA_EP_STS_ISP BIT(3) +/* Transfer descriptor missing. */ +#define DMA_EP_STS_DESCMIS BIT(4) +/* TRB error. */ +#define DMA_EP_STS_TRBERR BIT(7) +/* DMA busy bit. */ +#define DMA_EP_STS_DBUSY BIT(9) +/* Current Cycle Status. */ +#define DMA_EP_STS_CCS(p) ((p) & BIT(11)) +/* OUT size mismatch. */ +#define DMA_EP_STS_OUTSMM BIT(14) +/* ISO transmission error. */ +#define DMA_EP_STS_ISOERR BIT(15) + +/* DMA_EP_STS_EN - bitmasks. */ +/* OUT transfer missing descriptor enable. */ +#define DMA_EP_STS_EN_DESCMISEN BIT(4) +/* TRB enable. */ +#define DMA_EP_STS_EN_TRBERREN BIT(7) +/* OUT size mismatch enable. */ +#define DMA_EP_STS_EN_OUTSMMEN BIT(14) +/* ISO transmission error enable. */ +#define DMA_EP_STS_EN_ISOERREN BIT(15) + +/* DMA_EP_IEN - bitmasks. */ +#define DMA_EP_IEN(index) (1 << (index)) +#define DMA_EP_IEN_EP_OUT0 BIT(0) +#define DMA_EP_IEN_EP_IN0 BIT(16) + +/* DMA_EP_ISTS - bitmasks. */ +#define DMA_EP_ISTS(index) (1 << (index)) +#define DMA_EP_ISTS_EP_OUT0 BIT(0) +#define DMA_EP_ISTS_EP_IN0 BIT(16) + +#define gadget_to_cdns2_device(g) (container_of(g, struct cdns2_device, gadget)) +#define ep_to_cdns2_ep(ep) (container_of(ep, struct cdns2_endpoint, endpoint)) + +/*-------------------------------------------------------------------------*/ +#define TRBS_PER_SEGMENT 600 +#define ISO_MAX_INTERVAL 8 +#define MAX_TRB_LENGTH BIT(16) +#define MAX_ISO_SIZE 3076 +/* + * To improve performance the TRB buffer pointers can't cross + * 4KB boundaries. + */ +#define TRB_MAX_ISO_BUFF_SHIFT 12 +#define TRB_MAX_ISO_BUFF_SIZE BIT(TRB_MAX_ISO_BUFF_SHIFT) +/* How much data is left before the 4KB boundary? */ +#define TRB_BUFF_LEN_UP_TO_BOUNDARY(addr) (TRB_MAX_ISO_BUFF_SIZE - \ + ((addr) & (TRB_MAX_ISO_BUFF_SIZE - 1))) + +#if TRBS_PER_SEGMENT < 2 +#error "Incorrect TRBS_PER_SEGMENT. Minimal Transfer Ring size is 2." +#endif + +/** + * struct cdns2_trb - represent Transfer Descriptor block. + * @buffer: pointer to buffer data. + * @length: length of data. + * @control: control flags. + * + * This structure describes transfer block handled by DMA module. + */ +struct cdns2_trb { + __le32 buffer; + __le32 length; + __le32 control; +}; + +#define TRB_SIZE (sizeof(struct cdns2_trb)) +/* + * These two extra TRBs are reserved for isochronous transfer + * to inject 0 length packet and extra LINK TRB to synchronize the ISO transfer. + */ +#define TRB_ISO_RESERVED 2 +#define TR_SEG_SIZE (TRB_SIZE * (TRBS_PER_SEGMENT + TRB_ISO_RESERVED)) + +/* TRB bit mask. */ +#define TRB_TYPE_BITMASK GENMASK(15, 10) +#define TRB_TYPE(p) ((p) << 10) +#define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10) + +/* TRB type IDs. */ +/* Used for Bulk, Interrupt, ISOC, and control data stage. */ +#define TRB_NORMAL 1 +/* TRB for linking ring segments. */ +#define TRB_LINK 6 + +/* Cycle bit - indicates TRB ownership by driver or hw. */ +#define TRB_CYCLE BIT(0) +/* + * When set to '1', the device will toggle its interpretation of the Cycle bit. + */ +#define TRB_TOGGLE BIT(1) +/* Interrupt on short packet. */ +#define TRB_ISP BIT(2) +/* Chain bit associate this TRB with next one TRB. */ +#define TRB_CHAIN BIT(4) +/* Interrupt on completion. */ +#define TRB_IOC BIT(5) + +/* Transfer_len bitmasks. */ +#define TRB_LEN(p) ((p) & GENMASK(16, 0)) +#define TRB_BURST(p) (((p) << 24) & GENMASK(31, 24)) +#define TRB_FIELD_TO_BURST(p) (((p) & GENMASK(31, 24)) >> 24) + +/* Data buffer pointer bitmasks. */ +#define TRB_BUFFER(p) ((p) & GENMASK(31, 0)) + +/*-------------------------------------------------------------------------*/ +/* Driver numeric constants. */ + +/* Maximum address that can be assigned to device. */ +#define USB_DEVICE_MAX_ADDRESS 127 + +/* One control and 15 IN and 15 OUT endpoints. */ +#define CDNS2_ENDPOINTS_NUM 31 + +#define CDNS2_EP_ZLP_BUF_SIZE 512 + +/*-------------------------------------------------------------------------*/ +/* Used structures. */ + +struct cdns2_device; + +/** + * struct cdns2_ring - transfer ring representation. + * @trbs: pointer to transfer ring. + * @dma: dma address of transfer ring. + * @free_trbs: number of free TRBs in transfer ring. + * @pcs: producer cycle state. + * @ccs: consumer cycle state. + * @enqueue: enqueue index in transfer ring. + * @dequeue: dequeue index in transfer ring. + */ +struct cdns2_ring { + struct cdns2_trb *trbs; + dma_addr_t dma; + int free_trbs; + u8 pcs; + u8 ccs; + int enqueue; + int dequeue; +}; + +/** + * struct cdns2_endpoint - extended device side representation of USB endpoint. + * @endpoint: usb endpoint. + * @pending_list: list of requests queuing on transfer ring. + * @deferred_list: list of requests waiting for queuing on transfer ring. + * @pdev: device associated with endpoint. + * @name: a human readable name e.g. ep1out. + * @ring: transfer ring associated with endpoint. + * @ep_state: state of endpoint. + * @idx: index of endpoint in pdev->eps table. + * @dir: endpoint direction. + * @num: endpoint number (1 - 15). + * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK. + * @interval: interval between packets used for ISOC and Interrupt endpoint. + * @buffering: on-chip buffers assigned to endpoint. + * @trb_burst_size: number of burst used in TRB. + * @skip: Sometimes the controller cannot process isochronous endpoint ring + * quickly enough and it will miss some isoc tds on the ring and + * generate ISO transmition error. + * Driver sets skip flag when receive a ISO transmition error and + * process the missed TDs on the endpoint ring. + * @wa1_set: use WA1. + * @wa1_trb: TRB assigned to WA1. + * @wa1_trb_index: TRB index for WA1. + * @wa1_cycle_bit: correct cycle bit for WA1. + */ +struct cdns2_endpoint { + struct usb_ep endpoint; + struct list_head pending_list; + struct list_head deferred_list; + + struct cdns2_device *pdev; + char name[20]; + + struct cdns2_ring ring; + +#define EP_ENABLED BIT(0) +#define EP_STALLED BIT(1) +#define EP_STALL_PENDING BIT(2) +#define EP_WEDGE BIT(3) +#define EP_CLAIMED BIT(4) +#define EP_RING_FULL BIT(5) +#define EP_DEFERRED_DRDY BIT(6) + + u32 ep_state; + + u8 idx; + u8 dir; + u8 num; + u8 type; + int interval; + u8 buffering; + u8 trb_burst_size; + bool skip; + + unsigned int wa1_set:1; + struct cdns2_trb *wa1_trb; + unsigned int wa1_trb_index; + unsigned int wa1_cycle_bit:1; +}; + +/** + * struct cdns2_request - extended device side representation of usb_request + * object. + * @request: generic usb_request object describing single I/O request. + * @pep: extended representation of usb_ep object. + * @trb: the first TRB association with this request. + * @start_trb: number of the first TRB in transfer ring. + * @end_trb: number of the last TRB in transfer ring. + * @list: used for queuing request in lists. + * @finished_trb: number of trb has already finished per request. + * @num_of_trb: how many trbs are associated with request. + */ +struct cdns2_request { + struct usb_request request; + struct cdns2_endpoint *pep; + struct cdns2_trb *trb; + int start_trb; + int end_trb; + struct list_head list; + int finished_trb; + int num_of_trb; +}; + +#define to_cdns2_request(r) (container_of(r, struct cdns2_request, request)) + +/* Stages used during enumeration process.*/ +#define CDNS2_SETUP_STAGE 0x0 +#define CDNS2_DATA_STAGE 0x1 +#define CDNS2_STATUS_STAGE 0x2 + +/** + * struct cdns2_device - represent USB device. + * @dev: pointer to device structure associated whit this controller. + * @gadget: device side representation of the peripheral controller. + * @gadget_driver: pointer to the gadget driver. + * @lock: for synchronizing. + * @irq: interrupt line number. + * @regs: base address for registers + * @usb_regs: base address for common USB registers. + * @ep0_regs: base address for endpoint 0 related registers. + * @epx_regs: base address for all none control endpoint registers. + * @interrupt_regs: base address for interrupt handling related registers. + * @adma_regs: base address for ADMA registers. + * @eps_dma_pool: endpoint Transfer Ring pool. + * @setup: used while processing usb control requests. + * @ep0_preq: private request used while handling EP0. + * @ep0_stage: ep0 stage during enumeration process. + * @zlp_buf: zlp buffer. + * @dev_address: device address assigned by host. + * @eps: array of objects describing endpoints. + * @selected_ep: actually selected endpoint. It's used only to improve + * performance by limiting access to dma_ep_sel register. + * @is_selfpowered: device is self powered. + * @may_wakeup: allows device to remote wakeup the host. + * @status_completion_no_call: indicate that driver is waiting for status + * stage completion. It's used in deferred SET_CONFIGURATION request. + * @in_lpm: indicate the controller is in low power mode. + * @pending_status_wq: workqueue handling status stage for deferred requests. + * @pending_status_request: request for which status stage was deferred. + * @eps_supported: endpoints supported by controller in form: + * bit: 0 - ep0, 1 - epOut1, 2 - epIn1, 3 - epOut2 ... + * @burst_opt: array with the best burst size value for different TRB size. + * @onchip_tx_buf: size of transmit on-chip buffer in KB. + * @onchip_rx_buf: size of receive on-chip buffer in KB. + */ +struct cdns2_device { + struct device *dev; + struct usb_gadget gadget; + struct usb_gadget_driver *gadget_driver; + + /* generic spin-lock for drivers */ + spinlock_t lock; + int irq; + void __iomem *regs; + struct cdns2_usb_regs __iomem *usb_regs; + struct cdns2_ep0_regs __iomem *ep0_regs; + struct cdns2_epx_regs __iomem *epx_regs; + struct cdns2_interrupt_regs __iomem *interrupt_regs; + struct cdns2_adma_regs __iomem *adma_regs; + struct dma_pool *eps_dma_pool; + struct usb_ctrlrequest setup; + struct cdns2_request ep0_preq; + u8 ep0_stage; + void *zlp_buf; + u8 dev_address; + struct cdns2_endpoint eps[CDNS2_ENDPOINTS_NUM]; + u32 selected_ep; + bool is_selfpowered; + bool may_wakeup; + bool status_completion_no_call; + bool in_lpm; + struct work_struct pending_status_wq; + struct usb_request *pending_status_request; + u32 eps_supported; + u8 burst_opt[MAX_ISO_SIZE + 1]; + + /*in KB */ + u16 onchip_tx_buf; + u16 onchip_rx_buf; +}; + +#define CDNS2_IF_EP_EXIST(pdev, ep_num, dir) \ + ((pdev)->eps_supported & \ + (BIT(ep_num) << ((dir) ? 0 : 16))) + +dma_addr_t cdns2_trb_virt_to_dma(struct cdns2_endpoint *pep, + struct cdns2_trb *trb); +void cdns2_pending_setup_status_handler(struct work_struct *work); +void cdns2_select_ep(struct cdns2_device *pdev, u32 ep); +struct cdns2_request *cdns2_next_preq(struct list_head *list); +struct usb_request *cdns2_gadget_ep_alloc_request(struct usb_ep *ep, + gfp_t gfp_flags); +void cdns2_gadget_ep_free_request(struct usb_ep *ep, + struct usb_request *request); +int cdns2_gadget_ep_dequeue(struct usb_ep *ep, struct usb_request *request); +void cdns2_gadget_giveback(struct cdns2_endpoint *pep, + struct cdns2_request *priv_req, + int status); +void cdns2_init_ep0(struct cdns2_device *pdev, struct cdns2_endpoint *pep); +void cdns2_ep0_config(struct cdns2_device *pdev); +void cdns2_handle_ep0_interrupt(struct cdns2_device *pdev, int dir); +void cdns2_handle_setup_packet(struct cdns2_device *pdev); +int cdns2_gadget_resume(struct cdns2_device *pdev, bool hibernated); +int cdns2_gadget_suspend(struct cdns2_device *pdev); +void cdns2_gadget_remove(struct cdns2_device *pdev); +int cdns2_gadget_init(struct cdns2_device *pdev); +void set_reg_bit_8(void __iomem *ptr, u8 mask); +int cdns2_halt_endpoint(struct cdns2_device *pdev, struct cdns2_endpoint *pep, + int value); + +#endif /* __LINUX_CDNS2_GADGET */