From patchwork Tue Oct 20 12:57:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846883 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1B43F157C for ; Tue, 20 Oct 2020 13:02:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDF3D224B8 for ; Tue, 20 Oct 2020 13:02:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="cpH/KgFk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406681AbgJTM6t (ORCPT ); Tue, 20 Oct 2020 08:58:49 -0400 Received: from mail-dm6nam12on2042.outbound.protection.outlook.com ([40.107.243.42]:21473 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406733AbgJTM6r (ORCPT ); Tue, 20 Oct 2020 08:58:47 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bttkzqd05M8vB+PMvs3xmJi1Z8BLKRh14SDKH+PyPsng29CVFtfa4zqWoOBjjRZxTp49nwpKbrZNLjI1BphEJejoCxzCkBguHZCARVQ7WJPBW3mTth5aMlcsHA9aDPjogNRxZl4XhOIekC/Qnrvrw1a5TBmZXFN5fpZs/UL90fRYEeXi8woNZ4DFw1rhdO3W6SK+PbI+2iqrpxGq1tLGdCp5FVwJC8OzdqN9N7TK+FyFE/K/EYTedtJtYl41YpCt3l2EI8hbXmaUbttj90y96wGL39PRiAco8LFDVTpdSFBm6hJ0gmnmGx0vjvyKfk6WJY3xZD5paVrIoEqQ/FPF8g== 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-SenderADCheck; bh=asTSYqI/0VaupVnUwKr/Op8wQRhoedDfa4ZNrYWJ/VQ=; b=NYSxOB3XPbRO2eNd6spGqNuw77fX76SHIy0fzrVlr4DqNVMaZFG4qZhRVD82eQZnbkNOEu6WZfAeMzQH8XtG99pQV3jnHIFiYFpACjb0t5vFgOGTEipTpdJ/3bBhpxHwJY/Ee0KfMiMXHSMQvkolp3ht08oK9drTj4/POm195UV43o7zUrbw7n+TepiUdGe7LdbcVjBqEOPZm7ecksDzzPyTx8pSgaMmpgwuyX+OqbDBcotR9hPF2o2/xoXS6K4PGNaJ9UlBOLHAmHCewQZJSvR/lU2NkE9KSwonC1PTYrN0ac1PhL1AckV5k1Nl2V84ut98WM9YQJ9C9lpj1DX69A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=asTSYqI/0VaupVnUwKr/Op8wQRhoedDfa4ZNrYWJ/VQ=; b=cpH/KgFk/qU2G9Svkl8auD/LpgQJ8gHZxKph8UVVMdwyDLDwZLpT9zZ+4R8NO/dTJJylfAMd3cc+IJCX8MKEnDXQngSajkPQDkCbPeEzlNRx/WBlma5ju7P6iirwKsbNo6ehFv9G8RIt3SZ3OZNzPa8ksE/ishZ5ZGLVN13N87Q= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:43 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:43 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 01/24] mmc: sdio: add SDIO IDs for Silabs WF200 chip Date: Tue, 20 Oct 2020 14:57:54 +0200 Message-Id: <20201020125817.1632995-2-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:58:41 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 9db324d6-d590-48e7-f2f3-08d874f7df9f X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: t+m234RaP22nEWPuekUvg8H44YuMwWv+yFmdWb5acmHiSgGXBndLNcl6k0tJzwDzLKqV526W/kNhDWHZqiag7WbrRxgiNI/Pei6uqkzH2wpyKsZ+pTattpuDp8lj5qXzex/dYP88VDPpTcJE0eL7sEvjonEr0bvU0QbEINbfv2RNiOaz9asmx2syY5wYcVlUYbxjIJhHvfPeR7j75tDurI+aoC0VfuUqemYancAR4bKx6hC1ooWstGBqmuQgak/zt22edFkyg7cHk/KOCBhoLEQDKVRBZx5Ip5RmlLuD+a5TA5lwMiOEO/qo1dyc43CjCId0Wc0AskIjLVtWJXxxdw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(396003)(366004)(136003)(39830400003)(346002)(376002)(186003)(316002)(4326008)(107886003)(8676002)(86362001)(26005)(2906002)(7696005)(478600001)(16526019)(956004)(6486002)(52116002)(36756003)(8936002)(2616005)(54906003)(5660300002)(1076003)(7416002)(6666004)(66556008)(4744005)(66476007)(66946007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9db324d6-d590-48e7-f2f3-08d874f7df9f X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2020 12:58:43.4628 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: xep0prC2sfwXZceWMtUQfuKRI/vzBHFCJ4UQiuHdG5MJzjwlEEOWAhhzZKcqD71p35lpgnOcHBHc05FK/fCIpg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller Add Silabs SDIO ID to sdio_ids.h. Note that the values used by Silabs are uncommon. A driver cannot fully rely on the SDIO PnP. It should also check if the device is declared in the DT. Signed-off-by: Jérôme Pouiller Acked-by: Ulf Hansson Acked-by: Pali Rohár --- include/linux/mmc/sdio_ids.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/mmc/sdio_ids.h b/include/linux/mmc/sdio_ids.h index 12036619346c..20a48162f7fc 100644 --- a/include/linux/mmc/sdio_ids.h +++ b/include/linux/mmc/sdio_ids.h @@ -25,6 +25,11 @@ * Vendors and devices. Sort key: vendor first, device next. */ +// Silabs does not use a reliable vendor ID. To avoid conflicts, the driver +// won't probe the device if it is not also declared in the DT. +#define SDIO_VENDOR_ID_SILABS 0x0000 +#define SDIO_DEVICE_ID_SILABS_WF200 0x1000 + #define SDIO_VENDOR_ID_STE 0x0020 #define SDIO_DEVICE_ID_STE_CW1200 0x2280 From patchwork Tue Oct 20 12:57:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 93D7416BC for ; Tue, 20 Oct 2020 12:58:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A3C922409 for ; Tue, 20 Oct 2020 12:58:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="RxqI3DPM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406802AbgJTM6x (ORCPT ); Tue, 20 Oct 2020 08:58:53 -0400 Received: from mail-dm6nam12on2042.outbound.protection.outlook.com ([40.107.243.42]:21473 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406718AbgJTM6v (ORCPT ); Tue, 20 Oct 2020 08:58:51 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AFTt8D+7tkrDX/pPPsDh22AIEwZaqNkXAM+NVxHyzhC2dgDSewtOabP3+Jg6OeHPSH32obvW6TrnEcGNnmSefnlpBDGOepSANHNxb8zK4kvclYJRZ5/7rqzxV/9tPK9BSEFA8LE/3nopV/4rTSGLHimsRBDtEl+E3R7dMpyox8T6xBkoALbsz0BIkTqDhWbRpbbDfvzItUl3GQ6aJc/DoOWg6Dpx2NpJrYlTsdMYcXk9xlZZccmgfs94kUVvKOIi/FkYLpf2zrBvbtpFNj54EvuiF8E69j0lEwJkj5bW1eYzASvGH5HZRtbB6n7crYaUVk1/SK/bIEatsdQ5VvtkYA== 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-SenderADCheck; bh=cgq74Svg2j+DyJGRMumSG/SA0djbHNEWUreSI8ZV05o=; b=MU2dU0UFlh0FMqrQ1FVzoOn+ctp+Pnds6bDX+PAnqhPuZ93ORs4aNdDAFOxWK07vzl7oZ1a6SmlloAUPZoCyKWsz0OKDZUnaqTRxL9J3UMonCFV5sPdbG61mFnmTNmMWxQnWfcNewBGV0qVcS+KYJnSOPNwWrXHTznv/OYq5O8arYIPb/4UB2v8hSassgqwPmrVQMqDdh+3M6/+aIL9J7Zv77vQ6/hgCfkFkVhQ1lKQ33DLXgOFPQ7MeMd1BXkouuj1M54bfMNH2EzBd9qoqRW54FFUxXT+F5FabcZ0+Fi+XPYLybZaVs0HVt5iRl3VfeB3IaF7CxYmnkIxuQ8n3QQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=cgq74Svg2j+DyJGRMumSG/SA0djbHNEWUreSI8ZV05o=; b=RxqI3DPM9dPliTlYHMq4mNSw4dHxR3JlikhbZd+4qNLTMMmrLoUQH4Xt+ETTHckjU2Vw9r1cy2koQgof3O1x08NoNvb844iLNv7VPb3D4ERGzZ1JCRyjatXTNS7BvVDw0M+3O2EX7WCYtFn73sqlt0/n5BHGyjzYda7rdeWmPrI= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:46 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:46 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . 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Currently, the only device + from the WFxxx series is the WF200 described here: + https://www.silabs.com/documents/public/data-sheets/wf200-datasheet.pdf + + The WF200 can be connected via SPI or via SDIO. + + For SDIO: + + Declaring the WFxxx chip in device tree is mandatory (usually, the VID/PID is + sufficient for the SDIO devices). + + It is recommended to declare a mmc-pwrseq on SDIO host above WFx. Without + it, you may encounter issues during reboot. The mmc-pwrseq should be + compatible with mmc-pwrseq-simple. Please consult + Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt for more + information. + + For SPI: + + In add of the properties below, please consult + Documentation/devicetree/bindings/spi/spi-controller.yaml for optional SPI + related properties. + +properties: + compatible: + const: silabs,wf200 + + reg: + description: + When used on SDIO bus, must be set to 1. When used on SPI bus, it is + the chip select address of the device as defined in the SPI devices + bindings. + maxItems: 1 + + spi-max-frequency: true + + interrupts: + description: The interrupt line. Triggers IRQ_TYPE_LEVEL_HIGH and + IRQ_TYPE_EDGE_RISING are both supported by the chip and the driver. When + SPI is used, this property is required. When SDIO is used, the "in-band" + interrupt provided by the SDIO bus is used unless an interrupt is defined + in the Device Tree. + maxItems: 1 + + reset-gpios: + description: (SPI only) Phandle of gpio that will be used to reset chip + during probe. Without this property, you may encounter issues with warm + boot. (For legacy purpose, the gpio in inverted when compatible == + "silabs,wfx-spi") + + For SDIO, the reset gpio should declared using a mmc-pwrseq. + maxItems: 1 + + wakeup-gpios: + description: Phandle of gpio that will be used to wake-up chip. Without this + property, driver will disable most of power saving features. + maxItems: 1 + + config-file: + description: Use an alternative file as PDS. Default is `wf200.pds`. + + local-mac-address: + $ref: /net/ethernet-controller.yaml#/properties/local-mac-address + + mac-address: + $ref: /net/ethernet-controller.yaml#/properties/mac-address + +additionalProperties: true + +required: + - compatible + - reg + +examples: + - | + #include + #include + + spi0 { + #address-cells = <1>; + #size-cells = <0>; + + wfx@0 { + compatible = "silabs,wf200"; + pinctrl-names = "default"; + pinctrl-0 = <&wfx_irq &wfx_gpios>; + reg = <0>; + interrupts-extended = <&gpio 16 IRQ_TYPE_EDGE_RISING>; + wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>; + spi-max-frequency = <42000000>; + }; + }; + + - | + #include + #include + + wfx_pwrseq: wfx_pwrseq { + compatible = "mmc-pwrseq-simple"; + pinctrl-names = "default"; + pinctrl-0 = <&wfx_reset>; + reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>; + }; + + mmc0 { + mmc-pwrseq = <&wfx_pwrseq>; + #address-cells = <1>; + #size-cells = <0>; + + mmc@1 { + compatible = "silabs,wf200"; + pinctrl-names = "default"; + pinctrl-0 = <&wfx_wakeup>; + reg = <1>; + wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>; + }; + }; +... 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This chip can be found on SPI or SDIO buses. diff --git a/drivers/net/wireless/silabs/wfx/Makefile b/drivers/net/wireless/silabs/wfx/Makefile new file mode 100644 index 000000000000..0e0cc982ceab --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/Makefile @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0 + +# Necessary for CREATE_TRACE_POINTS +CFLAGS_debug.o = -I$(src) + +wfx-y := \ + bh.o \ + hwio.o \ + fwio.o \ + hif_tx_mib.o \ + hif_tx.o \ + hif_rx.o \ + queue.o \ + data_tx.o \ + data_rx.o \ + scan.o \ + sta.o \ + key.o \ + main.o \ + sta.o \ + debug.o +wfx-$(CONFIG_SPI) += bus_spi.o +wfx-$(subst m,y,$(CONFIG_MMC)) += bus_sdio.o + +obj-$(CONFIG_WFX) += wfx.o From patchwork Tue Oct 20 12:57:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846879 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C997414B7 for ; Tue, 20 Oct 2020 13:02:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A559922475 for ; Tue, 20 Oct 2020 13:02:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="bDTFZwNp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406825AbgJTM7C (ORCPT ); Tue, 20 Oct 2020 08:59:02 -0400 Received: from mail-dm6nam12on2042.outbound.protection.outlook.com ([40.107.243.42]:21473 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406822AbgJTM67 (ORCPT ); Tue, 20 Oct 2020 08:58:59 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Pva2+FadhiNrQUOx1o9TdaQuK+Ntweu9BT5uZYXOMz5z1XdJuNaASqwuXTCG7qvtuL4t8SQsYc2cU90pfbNLpVYdk56dXKe/eOyHykPtY6GdnjUuS9kUkOZ7PpxpfIBwoSLX+3zLjlv9E+dc658Om/Z/YjBxJ4q0OXbplXTTEH3VMoN15AKBfHn8YCsEZA3hvs9IhEFsv4GoA5FJvfBORukSwBtO3hL4hVthTio2zoA5o1saQq5E6KzXuMUqOVoT4yvT7HTAE8Nd2EWTmTxPZlakZnmgDSpDWZF/LEhhwdGDgSzZOwzUANooSlRevXo/ouBLfsJklYaYlek6FwjKjA== 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-SenderADCheck; bh=RqZzTE5IDNzLeiEeh0gtmEhR+vjHmPP5GDL6eBo8e3g=; b=BnaGMEN0rZNsJmDbl/w8vgVr7ECcmhue7n+HB4B/lKMvHSeYM6kgjJd1cZb4doeOZ6M69SebPwfp1OA9onPY6FDWkMVlbdjJ1u5gmGtHRYzH3r8JxZmfK+IoJxVFfc4plEX352QovrkPwkyhsg5L+LS217cQBOgeyVx0hXGXnG50UkoB7RLqjw5wfXJa7iufbz7E7FtMWAffbzF1YWvASsCfTZyW/qCmHT/JAYwRhm98IiHeBmC8m9SkvV2JFicC84CIYSjtJRBNa+se6sxFemM5kWX2iXL/oVFRx/Cq3GRWHA/ALZj4VobVjYSGjG2Eom32Tm7TFGE8Dye9ef7Pow== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=RqZzTE5IDNzLeiEeh0gtmEhR+vjHmPP5GDL6eBo8e3g=; b=bDTFZwNpVv/QiHt0ve0C21pWE+SptVFsNIh0MF9u8vKIM7GkvF3aWFcxematvy7gmQD9IN8vXKpIMG6yS7jN4NtlxpHc0UTz3uB9hSTiasJF+d9lfFAfwGNEPw2xPjj+ccDrL+Z5HkFcZA8Er9y+mlDZ5EZTDEbHsa6qG9+vG8A= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:50 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:50 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . 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+ +struct wfx_dev { + struct wfx_platform_data pdata; + struct device *dev; + struct ieee80211_hw *hw; + struct ieee80211_vif *vif[2]; + struct mac_address addresses[2]; + const struct hwbus_ops *hwbus_ops; + void *hwbus_priv; + + u8 keyset; + struct completion firmware_ready; + struct hif_ind_startup hw_caps; + struct wfx_hif hif; + struct delayed_work cooling_timeout_work; + bool poll_irq; + bool chip_frozen; + struct mutex conf_mutex; + + struct wfx_hif_cmd hif_cmd; + struct sk_buff_head tx_pending; + wait_queue_head_t tx_dequeue; + atomic_t tx_lock; + + atomic_t packet_id; + u32 key_map; + + struct hif_rx_stats rx_stats; + struct mutex rx_stats_lock; + struct hif_tx_power_loop_info tx_power_loop_info; + struct mutex tx_power_loop_info_lock; + int force_ps_timeout; +}; + +struct wfx_vif { + struct wfx_dev *wdev; + struct ieee80211_vif *vif; + struct ieee80211_channel *channel; + int id; + + u32 link_id_map; + + bool after_dtim_tx_allowed; + bool join_in_progress; + + struct delayed_work beacon_loss_work; + + struct wfx_queue tx_queue[4]; + struct tx_policy_cache tx_policy_cache; + struct work_struct tx_policy_upload_work; + + struct work_struct update_tim_work; + + unsigned long uapsd_mask; + + /* avoid some operations in parallel with scan */ + struct mutex scan_lock; + struct work_struct scan_work; + struct completion scan_complete; + bool scan_abort; + struct ieee80211_scan_request *scan_req; + + struct completion set_pm_mode_complete; +}; + +static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id) +{ + if (vif_id >= ARRAY_SIZE(wdev->vif)) { + dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id); + return NULL; + } + vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif)); + if (!wdev->vif[vif_id]) { + dev_dbg(wdev->dev, "requesting non-allocated vif: %d\n", + vif_id); + return NULL; + } + return (struct wfx_vif *) wdev->vif[vif_id]->drv_priv; +} + +static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev, + struct wfx_vif *cur) +{ + int i; + int mark = 0; + struct wfx_vif *tmp; + + if (!cur) + mark = 1; + for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) { + tmp = wdev_to_wvif(wdev, i); + if (mark && tmp) + return tmp; + if (tmp == cur) + mark = 1; + } + return NULL; +} + +static inline int wvif_count(struct wfx_dev *wdev) +{ + int i; + int ret = 0; + struct wfx_vif *wvif; + + for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) { + wvif = wdev_to_wvif(wdev, i); + if (wvif) + ret++; + } + return ret; +} + +static inline void memreverse(u8 *src, u8 length) +{ + u8 *lo = src; + u8 *hi = src + length - 1; + u8 swap; + + while (lo < hi) { + swap = *lo; + *lo++ = *hi; + *hi-- = swap; + } +} + +static inline int memzcmp(void *src, unsigned int size) +{ + u8 *buf = src; + + if (!size) + return 0; + if (*buf) + return 1; + return memcmp(buf, buf + 1, size - 1); +} + +#endif /* WFX_H */ From patchwork Tue Oct 20 12:57:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846873 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 23AAC14B7 for ; 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dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:52 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:52 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . 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+MODULE_AUTHOR("Jérôme Pouiller "); +MODULE_LICENSE("GPL"); + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .hw_value = (_rateid), \ + .flags = (_flags), \ +} + +static struct ieee80211_rate wfx_rates[] = { + RATETAB_ENT(10, 0, 0), + RATETAB_ENT(20, 1, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(55, 2, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(110, 3, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(60, 6, 0), + RATETAB_ENT(90, 7, 0), + RATETAB_ENT(120, 8, 0), + RATETAB_ENT(180, 9, 0), + RATETAB_ENT(240, 10, 0), + RATETAB_ENT(360, 11, 0), + RATETAB_ENT(480, 12, 0), + RATETAB_ENT(540, 13, 0), +}; + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = NL80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_channel), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static struct ieee80211_channel wfx_2ghz_chantable[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static const struct ieee80211_supported_band wfx_band_2ghz = { + .channels = wfx_2ghz_chantable, + .n_channels = ARRAY_SIZE(wfx_2ghz_chantable), + .bitrates = wfx_rates, + .n_bitrates = ARRAY_SIZE(wfx_rates), + .ht_cap = { + // Receive caps + .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_MAX_AMSDU | + (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT), + .ht_supported = 1, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE, + .mcs = { + .rx_mask = { 0xFF }, // MCS0 to MCS7 + .rx_highest = cpu_to_le16(72), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + }, + }, +}; + +static const struct ieee80211_iface_limit wdev_iface_limits[] = { + { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, + { .max = 1, .types = BIT(NL80211_IFTYPE_AP) }, +}; + +static const struct ieee80211_iface_combination wfx_iface_combinations[] = { + { + .num_different_channels = 2, + .max_interfaces = 2, + .limits = wdev_iface_limits, + .n_limits = ARRAY_SIZE(wdev_iface_limits), + } +}; + +static const struct ieee80211_ops wfx_ops = { + .start = wfx_start, + .stop = wfx_stop, + .add_interface = wfx_add_interface, + .remove_interface = wfx_remove_interface, + .config = wfx_config, + .tx = wfx_tx, + .join_ibss = wfx_join_ibss, + .leave_ibss = wfx_leave_ibss, + .conf_tx = wfx_conf_tx, + .hw_scan = wfx_hw_scan, + .cancel_hw_scan = wfx_cancel_hw_scan, + .start_ap = wfx_start_ap, + .stop_ap = wfx_stop_ap, + .sta_add = wfx_sta_add, + .sta_remove = wfx_sta_remove, + .set_tim = wfx_set_tim, + .set_key = wfx_set_key, + .set_rts_threshold = wfx_set_rts_threshold, + .set_default_unicast_key = wfx_set_default_unicast_key, + .bss_info_changed = wfx_bss_info_changed, + .configure_filter = wfx_configure_filter, + .ampdu_action = wfx_ampdu_action, + .flush = wfx_flush, + .add_chanctx = wfx_add_chanctx, + .remove_chanctx = wfx_remove_chanctx, + .change_chanctx = wfx_change_chanctx, + .assign_vif_chanctx = wfx_assign_vif_chanctx, + .unassign_vif_chanctx = wfx_unassign_vif_chanctx, +}; + +bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor) +{ + if (wdev->hw_caps.api_version_major < major) + return true; + if (wdev->hw_caps.api_version_major > major) + return false; + if (wdev->hw_caps.api_version_minor < minor) + return true; + return false; +} + +/* NOTE: wfx_send_pds() destroy buf */ +int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len) +{ + int ret; + int start, brace_level, i; + + start = 0; + brace_level = 0; + if (buf[0] != '{') { + dev_err(wdev->dev, "valid PDS start with '{'. Did you forget to compress it?\n"); + return -EINVAL; + } + for (i = 1; i < len - 1; i++) { + if (buf[i] == '{') + brace_level++; + if (buf[i] == '}') + brace_level--; + if (buf[i] == '}' && !brace_level) { + i++; + if (i - start + 1 > WFX_PDS_MAX_SIZE) + return -EFBIG; + buf[start] = '{'; + buf[i] = 0; + dev_dbg(wdev->dev, "send PDS '%s}'\n", buf + start); + buf[i] = '}'; + ret = hif_configuration(wdev, buf + start, + i - start + 1); + if (ret > 0) { + dev_err(wdev->dev, "PDS bytes %d to %d: invalid data (unsupported options?)\n", + start, i); + return -EINVAL; + } + if (ret == -ETIMEDOUT) { + dev_err(wdev->dev, "PDS bytes %d to %d: chip didn't reply (corrupted file?)\n", + start, i); + return ret; + } + if (ret) { + dev_err(wdev->dev, "PDS bytes %d to %d: chip returned an unknown error\n", + start, i); + return -EIO; + } + buf[i] = ','; + start = i; + } + } + return 0; +} + +static int wfx_send_pdata_pds(struct wfx_dev *wdev) +{ + int ret = 0; + const struct firmware *pds; + u8 *tmp_buf; + + ret = request_firmware(&pds, wdev->pdata.file_pds, wdev->dev); + if (ret) { + dev_err(wdev->dev, "can't load PDS file %s\n", + wdev->pdata.file_pds); + return ret; + } + tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL); + if (!tmp_buf) { + ret = -ENOMEM; + goto release_fw; + } + ret = wfx_send_pds(wdev, tmp_buf, pds->size); + kfree(tmp_buf); +release_fw: + release_firmware(pds); + return ret; +} + +static void wfx_free_common(void *data) +{ + struct wfx_dev *wdev = data; + + mutex_destroy(&wdev->tx_power_loop_info_lock); + mutex_destroy(&wdev->rx_stats_lock); + mutex_destroy(&wdev->conf_mutex); + ieee80211_free_hw(wdev->hw); +} + +struct wfx_dev *wfx_init_common(struct device *dev, + const struct wfx_platform_data *pdata, + const struct hwbus_ops *hwbus_ops, + void *hwbus_priv) +{ + struct ieee80211_hw *hw; + struct wfx_dev *wdev; + + hw = ieee80211_alloc_hw(sizeof(struct wfx_dev), &wfx_ops); + if (!hw) + return NULL; + + SET_IEEE80211_DEV(hw, dev); + + ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); + ieee80211_hw_set(hw, AMPDU_AGGREGATION); + ieee80211_hw_set(hw, CONNECTION_MONITOR); + ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); + ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); + ieee80211_hw_set(hw, SIGNAL_DBM); + ieee80211_hw_set(hw, SUPPORTS_PS); + ieee80211_hw_set(hw, MFP_CAPABLE); + + hw->vif_data_size = sizeof(struct wfx_vif); + hw->sta_data_size = sizeof(struct wfx_sta_priv); + hw->queues = 4; + hw->max_rates = 8; + hw->max_rate_tries = 8; + hw->extra_tx_headroom = sizeof(struct hif_msg) + + sizeof(struct hif_req_tx) + + 4 /* alignment */ + 8 /* TKIP IV */; + hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP); + hw->wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS | + NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 | + NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P | + NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U; + hw->wiphy->features |= NL80211_FEATURE_AP_SCAN; + hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; + hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; + hw->wiphy->max_ap_assoc_sta = HIF_LINK_ID_MAX; + hw->wiphy->max_scan_ssids = 2; + hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; + hw->wiphy->n_iface_combinations = ARRAY_SIZE(wfx_iface_combinations); + hw->wiphy->iface_combinations = wfx_iface_combinations; + hw->wiphy->bands[NL80211_BAND_2GHZ] = devm_kmalloc(dev, sizeof(wfx_band_2ghz), GFP_KERNEL); + // FIXME: also copy wfx_rates and wfx_2ghz_chantable + memcpy(hw->wiphy->bands[NL80211_BAND_2GHZ], &wfx_band_2ghz, + sizeof(wfx_band_2ghz)); + + wdev = hw->priv; + wdev->hw = hw; + wdev->dev = dev; + wdev->hwbus_ops = hwbus_ops; + wdev->hwbus_priv = hwbus_priv; + memcpy(&wdev->pdata, pdata, sizeof(*pdata)); + of_property_read_string(dev->of_node, "config-file", + &wdev->pdata.file_pds); + wdev->pdata.gpio_wakeup = devm_gpiod_get_optional(dev, "wakeup", + GPIOD_OUT_LOW); + if (IS_ERR(wdev->pdata.gpio_wakeup)) + return NULL; + if (wdev->pdata.gpio_wakeup) + gpiod_set_consumer_name(wdev->pdata.gpio_wakeup, "wfx wakeup"); + + mutex_init(&wdev->conf_mutex); + mutex_init(&wdev->rx_stats_lock); + mutex_init(&wdev->tx_power_loop_info_lock); + init_completion(&wdev->firmware_ready); + INIT_DELAYED_WORK(&wdev->cooling_timeout_work, + wfx_cooling_timeout_work); + skb_queue_head_init(&wdev->tx_pending); + init_waitqueue_head(&wdev->tx_dequeue); + wfx_init_hif_cmd(&wdev->hif_cmd); + wdev->force_ps_timeout = -1; + + if (devm_add_action_or_reset(dev, wfx_free_common, wdev)) + return NULL; + + return wdev; +} + +int wfx_probe(struct wfx_dev *wdev) +{ + int i; + int err; + const void *macaddr; + struct gpio_desc *gpio_saved; + + // During first part of boot, gpio_wakeup cannot yet been used. So + // prevent bh() to touch it. + gpio_saved = wdev->pdata.gpio_wakeup; + wdev->pdata.gpio_wakeup = NULL; + wdev->poll_irq = true; + + wfx_bh_register(wdev); + + err = wfx_init_device(wdev); + if (err) + goto err0; + + wfx_bh_poll_irq(wdev); + err = wait_for_completion_timeout(&wdev->firmware_ready, 1 * HZ); + if (err <= 0) { + if (err == 0) { + dev_err(wdev->dev, "timeout while waiting for startup indication\n"); + err = -ETIMEDOUT; + } else if (err == -ERESTARTSYS) { + dev_info(wdev->dev, "probe interrupted by user\n"); + } + goto err0; + } + + // FIXME: fill wiphy::hw_version + dev_info(wdev->dev, "started firmware %d.%d.%d \"%s\" (API: %d.%d, keyset: %02X, caps: 0x%.8X)\n", + wdev->hw_caps.firmware_major, wdev->hw_caps.firmware_minor, + wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label, + wdev->hw_caps.api_version_major, wdev->hw_caps.api_version_minor, + wdev->keyset, wdev->hw_caps.link_mode); + snprintf(wdev->hw->wiphy->fw_version, + sizeof(wdev->hw->wiphy->fw_version), + "%d.%d.%d", + wdev->hw_caps.firmware_major, + wdev->hw_caps.firmware_minor, + wdev->hw_caps.firmware_build); + + if (wfx_api_older_than(wdev, 1, 0)) { + dev_err(wdev->dev, + "unsupported firmware API version (expect 1 while firmware returns %d)\n", + wdev->hw_caps.api_version_major); + err = -ENOTSUPP; + goto err0; + } + + if (wdev->hw_caps.link_mode == SEC_LINK_ENFORCED) { + dev_err(wdev->dev, + "chip require secure_link, but can't negotiate it\n"); + goto err0; + } + + if (wdev->hw_caps.region_sel_mode) { + wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[11].flags |= IEEE80211_CHAN_NO_IR; + wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[12].flags |= IEEE80211_CHAN_NO_IR; + wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[13].flags |= IEEE80211_CHAN_DISABLED; + } + + dev_dbg(wdev->dev, "sending configuration file %s\n", + wdev->pdata.file_pds); + err = wfx_send_pdata_pds(wdev); + if (err < 0) + goto err0; + + wdev->poll_irq = false; + err = wdev->hwbus_ops->irq_subscribe(wdev->hwbus_priv); + if (err) + goto err0; + + err = hif_use_multi_tx_conf(wdev, true); + if (err) + dev_err(wdev->dev, "misconfigured IRQ?\n"); + + wdev->pdata.gpio_wakeup = gpio_saved; + if (wdev->pdata.gpio_wakeup) { + dev_dbg(wdev->dev, + "enable 'quiescent' power mode with wakeup GPIO and PDS file %s\n", + wdev->pdata.file_pds); + gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1); + control_reg_write(wdev, 0); + hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_QUIESCENT); + } else { + hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_DOZE); + } + + for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) { + eth_zero_addr(wdev->addresses[i].addr); + macaddr = of_get_mac_address(wdev->dev->of_node); + if (!IS_ERR_OR_NULL(macaddr)) { + ether_addr_copy(wdev->addresses[i].addr, macaddr); + wdev->addresses[i].addr[ETH_ALEN - 1] += i; + } else { + ether_addr_copy(wdev->addresses[i].addr, + wdev->hw_caps.mac_addr[i]); + } + if (!is_valid_ether_addr(wdev->addresses[i].addr)) { + dev_warn(wdev->dev, "using random MAC address\n"); + eth_random_addr(wdev->addresses[i].addr); + } + dev_info(wdev->dev, "MAC address %d: %pM\n", i, + wdev->addresses[i].addr); + } + wdev->hw->wiphy->n_addresses = ARRAY_SIZE(wdev->addresses); + wdev->hw->wiphy->addresses = wdev->addresses; + + err = ieee80211_register_hw(wdev->hw); + if (err) + goto err1; + + err = wfx_debug_init(wdev); + if (err) + goto err2; + + return 0; + +err2: + ieee80211_unregister_hw(wdev->hw); +err1: + wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv); +err0: + wfx_bh_unregister(wdev); + return err; +} + +void wfx_release(struct wfx_dev *wdev) +{ + ieee80211_unregister_hw(wdev->hw); + hif_shutdown(wdev); + wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv); + wfx_bh_unregister(wdev); +} + +static int __init wfx_core_init(void) +{ + int ret = 0; + + if (IS_ENABLED(CONFIG_SPI)) + ret = spi_register_driver(&wfx_spi_driver); + if (IS_ENABLED(CONFIG_MMC) && !ret) + ret = sdio_register_driver(&wfx_sdio_driver); + return ret; +} +module_init(wfx_core_init); + +static void __exit wfx_core_exit(void) +{ + if (IS_ENABLED(CONFIG_MMC)) + sdio_unregister_driver(&wfx_sdio_driver); + if (IS_ENABLED(CONFIG_SPI)) + spi_unregister_driver(&wfx_spi_driver); +} +module_exit(wfx_core_exit); diff --git a/drivers/net/wireless/silabs/wfx/main.h b/drivers/net/wireless/silabs/wfx/main.h new file mode 100644 index 000000000000..a0db322383a3 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/main.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Device probe and register. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (c) 2006, Michael Wu + * Copyright 2004-2006 Jean-Baptiste Note , et al. + */ +#ifndef WFX_MAIN_H +#define WFX_MAIN_H + +#include +#include + +#include "hif_api_general.h" + +struct wfx_dev; +struct hwbus_ops; + +struct wfx_platform_data { + /* Keyset and ".sec" extension will be appended to this string */ + const char *file_fw; + const char *file_pds; + struct gpio_desc *gpio_wakeup; + /* + * if true HIF D_out is sampled on the rising edge of the clock + * (intended to be used in 50Mhz SDIO) + */ + bool use_rising_clk; +}; + +struct wfx_dev *wfx_init_common(struct device *dev, + const struct wfx_platform_data *pdata, + const struct hwbus_ops *hwbus_ops, + void *hwbus_priv); + +int wfx_probe(struct wfx_dev *wdev); +void wfx_release(struct wfx_dev *wdev); + +bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor); +int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len); + +#endif From patchwork Tue Oct 20 12:57:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846869 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8AE17157C for ; Tue, 20 Oct 2020 13:02:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E89222475 for ; Tue, 20 Oct 2020 13:02:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="LropplEP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406788AbgJTM7I (ORCPT ); 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Tue, 20 Oct 2020 12:58:55 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 06/24] wfx: add bus.h Date: Tue, 20 Oct 2020 14:57:59 +0200 Message-Id: <20201020125817.1632995-7-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:58:52 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 74aedc56-9e8e-4bc0-278e-08d874f7e6a7 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:421; 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+ int (*copy_to_io)(void *bus_priv, unsigned int addr, + const void *src, size_t count); + int (*irq_subscribe)(void *bus_priv); + int (*irq_unsubscribe)(void *bus_priv); + void (*lock)(void *bus_priv); + void (*unlock)(void *bus_priv); + size_t (*align_size)(void *bus_priv, size_t size); +}; + +extern struct sdio_driver wfx_sdio_driver; +extern struct spi_driver wfx_spi_driver; + +#endif From patchwork Tue Oct 20 12:58:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846867 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2A85514B7 for ; Tue, 20 Oct 2020 13:02:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 01292224B1 for ; Tue, 20 Oct 2020 13:02:22 +0000 (UTC) Authentication-Results: mail.kernel.org; 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dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:57 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:57 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 07/24] wfx: add bus_spi.c Date: Tue, 20 Oct 2020 14:58:00 +0200 Message-Id: <20201020125817.1632995-8-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:58:55 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 28089db0-f9e0-4b4f-2061-08d874f7e807 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2089; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: j6FbWA0jNVXiFdLOZz987cTwEVj8D+l+IkmTVTgly9j+H2dAuyrLKZO/bKdPP4C79cG6CEWk2czzJKsKGd3Y4UqSqr/VrFrwpy6THSQy+VIo7xDam/oAFPTSw3nSEZPtltTd0OY0eR0/agV7+H3IKTaRaUuoQtHD9stm5fY3Bh9g11Q+z7jNaiLRg8y+dLDfHDetTD+qviQ61WYVv8GBRBqtvjR45+1ZcqVDqQyAL7n8U4agMGQRL/5Ma1AiCJZlWBIuoO4+jkfpIMse4jRsLTCfpj/AubJ7PPENqz01p44mP5uxg6wNxOlw9xTpIWZahKRw4/drXk80BsjcSWBuCg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(396003)(366004)(136003)(39830400003)(346002)(376002)(186003)(316002)(4326008)(107886003)(8676002)(86362001)(26005)(2906002)(7696005)(478600001)(16526019)(956004)(6486002)(52116002)(36756003)(8936002)(2616005)(54906003)(5660300002)(1076003)(7416002)(66574015)(6666004)(66556008)(66476007)(66946007)(83380400001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 28089db0-f9e0-4b4f-2061-08d874f7e807 X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2020 12:58:57.2509 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: lUNb6Pvb5AqPtnAGnI/MLELWzYfqHoKOL+SP9EdYokng5GpVNvtUKmqrPs2nHN693OFMBfglA0s1vqD3ksAEKg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/bus_spi.c | 271 ++++++++++++++++++++++ 1 file changed, 271 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/bus_spi.c diff --git a/drivers/net/wireless/silabs/wfx/bus_spi.c b/drivers/net/wireless/silabs/wfx/bus_spi.c new file mode 100644 index 000000000000..a99125d1a30d --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/bus_spi.c @@ -0,0 +1,271 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * SPI interface. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2011, Sagrad Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include +#include +#include +#include +#include +#include +#include + +#include "bus.h" +#include "wfx.h" +#include "hwio.h" +#include "main.h" +#include "bh.h" + +#define SET_WRITE 0x7FFF /* usage: and operation */ +#define SET_READ 0x8000 /* usage: or operation */ + +#define WFX_RESET_INVERTED 1 + +static const struct wfx_platform_data wfx_spi_pdata = { + .file_fw = "wfm_wf200", + .file_pds = "wf200.pds", + .use_rising_clk = true, +}; + +struct wfx_spi_priv { + struct spi_device *func; + struct wfx_dev *core; + struct gpio_desc *gpio_reset; + bool need_swab; +}; + +/* + * WFx chip read data 16bits at time and place them directly into (little + * endian) CPU register. So, chip expect byte order like "B1 B0 B3 B2" (while + * LE is "B0 B1 B2 B3" and BE is "B3 B2 B1 B0") + * + * A little endian host with bits_per_word == 16 should do the right job + * natively. The code below to support big endian host and commonly used SPI + * 8bits. + */ +static int wfx_spi_copy_from_io(void *priv, unsigned int addr, + void *dst, size_t count) +{ + struct wfx_spi_priv *bus = priv; + u16 regaddr = (addr << 12) | (count / 2) | SET_READ; + struct spi_message m; + struct spi_transfer t_addr = { + .tx_buf = ®addr, + .len = sizeof(regaddr), + }; + struct spi_transfer t_msg = { + .rx_buf = dst, + .len = count, + }; + u16 *dst16 = dst; + int ret, i; + + WARN(count % 2, "buffer size must be a multiple of 2"); + + cpu_to_le16s(®addr); + if (bus->need_swab) + swab16s(®addr); + + spi_message_init(&m); + spi_message_add_tail(&t_addr, &m); + spi_message_add_tail(&t_msg, &m); + ret = spi_sync(bus->func, &m); + + if (bus->need_swab && addr == WFX_REG_CONFIG) + for (i = 0; i < count / 2; i++) + swab16s(&dst16[i]); + return ret; +} + +static int wfx_spi_copy_to_io(void *priv, unsigned int addr, + const void *src, size_t count) +{ + struct wfx_spi_priv *bus = priv; + u16 regaddr = (addr << 12) | (count / 2); + // FIXME: use a bounce buffer + u16 *src16 = (void *)src; + int ret, i; + struct spi_message m; + struct spi_transfer t_addr = { + .tx_buf = ®addr, + .len = sizeof(regaddr), + }; + struct spi_transfer t_msg = { + .tx_buf = src, + .len = count, + }; + + WARN(count % 2, "buffer size must be a multiple of 2"); + WARN(regaddr & SET_READ, "bad addr or size overflow"); + + cpu_to_le16s(®addr); + + // Register address and CONFIG content always use 16bit big endian + // ("BADC" order) + if (bus->need_swab) + swab16s(®addr); + if (bus->need_swab && addr == WFX_REG_CONFIG) + for (i = 0; i < count / 2; i++) + swab16s(&src16[i]); + + spi_message_init(&m); + spi_message_add_tail(&t_addr, &m); + spi_message_add_tail(&t_msg, &m); + ret = spi_sync(bus->func, &m); + + if (bus->need_swab && addr == WFX_REG_CONFIG) + for (i = 0; i < count / 2; i++) + swab16s(&src16[i]); + return ret; +} + +static void wfx_spi_lock(void *priv) +{ +} + +static void wfx_spi_unlock(void *priv) +{ +} + +static irqreturn_t wfx_spi_irq_handler(int irq, void *priv) +{ + struct wfx_spi_priv *bus = priv; + + wfx_bh_request_rx(bus->core); + return IRQ_HANDLED; +} + +static int wfx_spi_irq_subscribe(void *priv) +{ + struct wfx_spi_priv *bus = priv; + u32 flags; + + flags = irq_get_trigger_type(bus->func->irq); + if (!flags) + flags = IRQF_TRIGGER_HIGH; + flags |= IRQF_ONESHOT; + return devm_request_threaded_irq(&bus->func->dev, bus->func->irq, NULL, + wfx_spi_irq_handler, IRQF_ONESHOT, + "wfx", bus); +} + +static int wfx_spi_irq_unsubscribe(void *priv) +{ + struct wfx_spi_priv *bus = priv; + + devm_free_irq(&bus->func->dev, bus->func->irq, bus); + return 0; +} + +static size_t wfx_spi_align_size(void *priv, size_t size) +{ + // Most of SPI controllers avoid DMA if buffer size is not 32bit aligned + return ALIGN(size, 4); +} + +static const struct hwbus_ops wfx_spi_hwbus_ops = { + .copy_from_io = wfx_spi_copy_from_io, + .copy_to_io = wfx_spi_copy_to_io, + .irq_subscribe = wfx_spi_irq_subscribe, + .irq_unsubscribe = wfx_spi_irq_unsubscribe, + .lock = wfx_spi_lock, + .unlock = wfx_spi_unlock, + .align_size = wfx_spi_align_size, +}; + +static int wfx_spi_probe(struct spi_device *func) +{ + struct wfx_spi_priv *bus; + int ret; + + if (!func->bits_per_word) + func->bits_per_word = 16; + ret = spi_setup(func); + if (ret) + return ret; + // Trace below is also displayed by spi_setup() if compiled with DEBUG + dev_dbg(&func->dev, "SPI params: CS=%d, mode=%d bits/word=%d speed=%d\n", + func->chip_select, func->mode, func->bits_per_word, + func->max_speed_hz); + if (func->bits_per_word != 16 && func->bits_per_word != 8) + dev_warn(&func->dev, "unusual bits/word value: %d\n", + func->bits_per_word); + if (func->max_speed_hz > 50000000) + dev_warn(&func->dev, "%dHz is a very high speed\n", + func->max_speed_hz); + + bus = devm_kzalloc(&func->dev, sizeof(*bus), GFP_KERNEL); + if (!bus) + return -ENOMEM; + bus->func = func; + if (func->bits_per_word == 8 || IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) + bus->need_swab = true; + spi_set_drvdata(func, bus); + + bus->gpio_reset = devm_gpiod_get_optional(&func->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(bus->gpio_reset)) + return PTR_ERR(bus->gpio_reset); + if (!bus->gpio_reset) { + dev_warn(&func->dev, + "gpio reset is not defined, trying to load firmware anyway\n"); + } else { + gpiod_set_consumer_name(bus->gpio_reset, "wfx reset"); + if (spi_get_device_id(func)->driver_data & WFX_RESET_INVERTED) + gpiod_toggle_active_low(bus->gpio_reset); + gpiod_set_value_cansleep(bus->gpio_reset, 1); + usleep_range(100, 150); + gpiod_set_value_cansleep(bus->gpio_reset, 0); + usleep_range(2000, 2500); + } + + bus->core = wfx_init_common(&func->dev, &wfx_spi_pdata, + &wfx_spi_hwbus_ops, bus); + if (!bus->core) + return -EIO; + + return wfx_probe(bus->core); +} + +static int wfx_spi_remove(struct spi_device *func) +{ + struct wfx_spi_priv *bus = spi_get_drvdata(func); + + wfx_release(bus->core); + return 0; +} + +/* + * For dynamic driver binding, kernel does not use OF to match driver. It only + * use modalias and modalias is a copy of 'compatible' DT node with vendor + * stripped. + */ +static const struct spi_device_id wfx_spi_id[] = { + { "wfx-spi", WFX_RESET_INVERTED }, + { "wf200", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(spi, wfx_spi_id); + +#ifdef CONFIG_OF +static const struct of_device_id wfx_spi_of_match[] = { + { .compatible = "silabs,wfx-spi", .data = (void *)WFX_RESET_INVERTED }, + { .compatible = "silabs,wf200" }, + { }, +}; +MODULE_DEVICE_TABLE(of, wfx_spi_of_match); +#endif + +struct spi_driver wfx_spi_driver = { + .driver = { + .name = "wfx-spi", + .of_match_table = of_match_ptr(wfx_spi_of_match), + }, + .id_table = wfx_spi_id, + .probe = wfx_spi_probe, + .remove = wfx_spi_remove, +}; From patchwork Tue Oct 20 12:58:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846861 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D8A216C0 for ; Tue, 20 Oct 2020 13:02:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 289B8224D1 for ; Tue, 20 Oct 2020 13:02:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="H796t9DD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406822AbgJTM7P (ORCPT ); Tue, 20 Oct 2020 08:59:15 -0400 Received: from mail-dm6nam12on2042.outbound.protection.outlook.com ([40.107.243.42]:21473 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406886AbgJTM7N (ORCPT ); Tue, 20 Oct 2020 08:59:13 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=h4PucN0ZsVQQvo49DeHMCLWPUHzMcb+G09HWN7b/VeSa9MH4t1l2tOMF6a+Rdx1XxzQf7qwcm5X9N5vJR06o4cF9i2MIr/wPwvJY106dtvV7oI9RINcvqxjdIns+o5F2cSHVQXW9Yw3Uk6KJrMgiD6RNtJd2TPCKTAvrwL8CVfFUFjZOX2d+wfR1NKfBohZFghCYi1+VpXQUmN+y85WWmud/MIyHBOzYzUJZfMeYzAz7V0K7hWVap6UeIryeJo24elI7/2ozxhJpH5e/W+MaMrdGLwMJzq9OvpY4ZiUQDLXASiYs0gPt7LaezvSY1XvaffbngqAGDUfDAzMmb3Kl+Q== 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-SenderADCheck; bh=1tp3wYFuvi1fgrePDe+EDIV+7OVFd2InjDeH2C7ogj4=; b=GSoudAZG0VoubOJ2uBDeV+QU2slwzyU4j1+OydvCFBIJVdNTqXkgdRCG3TbsUPVxDuo7v3HFuCoWykTrWM9KVmlZGqOPYLPnEF+4D8OI14716MW5mpnDOZBCqOePwe6CX+bnmM9nDYGWaEBXvNrnQeS+zzg6u7lt2ivygyhm7xUIiV39M2JB9NzBO3QMJD0nYOb+PRgsKroEBEbqaAUDLLXA3UHI+gRii9w1bsEn8FL1LQWlWNT3CTPG6YXyDgObniSEjdpXkqEY2AkgKD6mEK9GjN4TjMi8atc1wDQKltpm531qx0deiGxX+hp7IxtR+ple4kf7ytPuvNLxQz2dCA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1tp3wYFuvi1fgrePDe+EDIV+7OVFd2InjDeH2C7ogj4=; b=H796t9DDgQ4xrVqRoRXlG0CBRdkB0hLFKyDSFjxz6E26nB6gRyuuzloLmeo0Lkaq9LI6FcJsmFE38B1a9U/7gdidkZccibxEPH9uiIa99Y9LEPxs1nUGT1DlfSxV5ANrrcuklzFtTwhHL6IzscluVjWhZWY33A48wYuFbXay6b0= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:58:59 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:58:59 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 08/24] wfx: add bus_sdio.c Date: Tue, 20 Oct 2020 14:58:01 +0200 Message-Id: <20201020125817.1632995-9-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:58:57 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b9f242b6-4f16-4ba6-d931-08d874f7e957 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3968; 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+ +struct wfx_sdio_priv { + struct sdio_func *func; + struct wfx_dev *core; + u8 buf_id_tx; + u8 buf_id_rx; + int of_irq; +}; + +static int wfx_sdio_copy_from_io(void *priv, unsigned int reg_id, + void *dst, size_t count) +{ + struct wfx_sdio_priv *bus = priv; + unsigned int sdio_addr = reg_id << 2; + int ret; + + WARN(reg_id > 7, "chip only has 7 registers"); + WARN(((uintptr_t)dst) & 3, "unaligned buffer size"); + WARN(count & 3, "unaligned buffer address"); + + /* Use queue mode buffers */ + if (reg_id == WFX_REG_IN_OUT_QUEUE) + sdio_addr |= (bus->buf_id_rx + 1) << 7; + ret = sdio_memcpy_fromio(bus->func, dst, sdio_addr, count); + if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE) + bus->buf_id_rx = (bus->buf_id_rx + 1) % 4; + + return ret; +} + +static int wfx_sdio_copy_to_io(void *priv, unsigned int reg_id, + const void *src, size_t count) +{ + struct wfx_sdio_priv *bus = priv; + unsigned int sdio_addr = reg_id << 2; + int ret; + + WARN(reg_id > 7, "chip only has 7 registers"); + WARN(((uintptr_t)src) & 3, "unaligned buffer size"); + WARN(count & 3, "unaligned buffer address"); + + /* Use queue mode buffers */ + if (reg_id == WFX_REG_IN_OUT_QUEUE) + sdio_addr |= bus->buf_id_tx << 7; + // FIXME: discards 'const' qualifier for src + ret = sdio_memcpy_toio(bus->func, sdio_addr, (void *)src, count); + if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE) + bus->buf_id_tx = (bus->buf_id_tx + 1) % 32; + + return ret; +} + +static void wfx_sdio_lock(void *priv) +{ + struct wfx_sdio_priv *bus = priv; + + sdio_claim_host(bus->func); +} + +static void wfx_sdio_unlock(void *priv) +{ + struct wfx_sdio_priv *bus = priv; + + sdio_release_host(bus->func); +} + +static void wfx_sdio_irq_handler(struct sdio_func *func) +{ + struct wfx_sdio_priv *bus = sdio_get_drvdata(func); + + wfx_bh_request_rx(bus->core); +} + +static irqreturn_t wfx_sdio_irq_handler_ext(int irq, void *priv) +{ + struct wfx_sdio_priv *bus = priv; + + sdio_claim_host(bus->func); + wfx_bh_request_rx(bus->core); + sdio_release_host(bus->func); + return IRQ_HANDLED; +} + +static int wfx_sdio_irq_subscribe(void *priv) +{ + struct wfx_sdio_priv *bus = priv; + u32 flags; + int ret; + u8 cccr; + + if (!bus->of_irq) { + sdio_claim_host(bus->func); + ret = sdio_claim_irq(bus->func, wfx_sdio_irq_handler); + sdio_release_host(bus->func); + return ret; + } + + sdio_claim_host(bus->func); + cccr = sdio_f0_readb(bus->func, SDIO_CCCR_IENx, NULL); + cccr |= BIT(0); + cccr |= BIT(bus->func->num); + sdio_f0_writeb(bus->func, cccr, SDIO_CCCR_IENx, NULL); + sdio_release_host(bus->func); + flags = irq_get_trigger_type(bus->of_irq); + if (!flags) + flags = IRQF_TRIGGER_HIGH; + flags |= IRQF_ONESHOT; + return devm_request_threaded_irq(&bus->func->dev, bus->of_irq, NULL, + wfx_sdio_irq_handler_ext, flags, + "wfx", bus); +} + +static int wfx_sdio_irq_unsubscribe(void *priv) +{ + struct wfx_sdio_priv *bus = priv; + int ret; + + if (bus->of_irq) + devm_free_irq(&bus->func->dev, bus->of_irq, bus); + sdio_claim_host(bus->func); + ret = sdio_release_irq(bus->func); + sdio_release_host(bus->func); + return ret; +} + +static size_t wfx_sdio_align_size(void *priv, size_t size) +{ + struct wfx_sdio_priv *bus = priv; + + return sdio_align_size(bus->func, size); +} + +static const struct hwbus_ops wfx_sdio_hwbus_ops = { + .copy_from_io = wfx_sdio_copy_from_io, + .copy_to_io = wfx_sdio_copy_to_io, + .irq_subscribe = wfx_sdio_irq_subscribe, + .irq_unsubscribe = wfx_sdio_irq_unsubscribe, + .lock = wfx_sdio_lock, + .unlock = wfx_sdio_unlock, + .align_size = wfx_sdio_align_size, +}; + +static const struct of_device_id wfx_sdio_of_match[] = { + { .compatible = "silabs,wfx-sdio" }, + { .compatible = "silabs,wf200" }, + { }, +}; +MODULE_DEVICE_TABLE(of, wfx_sdio_of_match); + +static int wfx_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + struct device_node *np = func->dev.of_node; + struct wfx_sdio_priv *bus; + int ret; + + if (func->num != 1) { + dev_err(&func->dev, "SDIO function number is %d while it should always be 1 (unsupported chip?)\n", + func->num); + return -ENODEV; + } + + bus = devm_kzalloc(&func->dev, sizeof(*bus), GFP_KERNEL); + if (!bus) + return -ENOMEM; + + if (!np || !of_match_node(wfx_sdio_of_match, np)) { + dev_warn(&func->dev, "no compatible device found in DT\n"); + return -ENODEV; + } + + bus->func = func; + bus->of_irq = irq_of_parse_and_map(np, 0); + sdio_set_drvdata(func, bus); + func->card->quirks |= MMC_QUIRK_LENIENT_FN0 | + MMC_QUIRK_BLKSZ_FOR_BYTE_MODE | + MMC_QUIRK_BROKEN_BYTE_MODE_512; + + sdio_claim_host(func); + ret = sdio_enable_func(func); + // Block of 64 bytes is more efficient than 512B for frame sizes < 4k + sdio_set_block_size(func, 64); + sdio_release_host(func); + if (ret) + goto err0; + + bus->core = wfx_init_common(&func->dev, &wfx_sdio_pdata, + &wfx_sdio_hwbus_ops, bus); + if (!bus->core) { + ret = -EIO; + goto err1; + } + + ret = wfx_probe(bus->core); + if (ret) + goto err1; + + return 0; + +err1: + sdio_claim_host(func); + sdio_disable_func(func); + sdio_release_host(func); +err0: + return ret; +} + +static void wfx_sdio_remove(struct sdio_func *func) +{ + struct wfx_sdio_priv *bus = sdio_get_drvdata(func); + + wfx_release(bus->core); + sdio_claim_host(func); + sdio_disable_func(func); + sdio_release_host(func); +} + +static const struct sdio_device_id wfx_sdio_ids[] = { + { SDIO_DEVICE(SDIO_VENDOR_ID_SILABS, SDIO_DEVICE_ID_SILABS_WF200) }, + { }, +}; +MODULE_DEVICE_TABLE(sdio, wfx_sdio_ids); + +struct sdio_driver wfx_sdio_driver = { + .name = "wfx-sdio", + .id_table = wfx_sdio_ids, + .probe = wfx_sdio_probe, + .remove = wfx_sdio_remove, + .drv = { + .owner = THIS_MODULE, + .of_match_table = wfx_sdio_of_match, + } +}; From patchwork Tue Oct 20 12:58:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846763 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C78DB16BC for ; Tue, 20 Oct 2020 12:59:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 823C222473 for ; Tue, 20 Oct 2020 12:59:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="QpNvSFzb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406751AbgJTM7W (ORCPT ); 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Tue, 20 Oct 2020 12:59:02 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 09/24] wfx: add hwio.c/hwio.h Date: Tue, 20 Oct 2020 14:58:02 +0200 Message-Id: <20201020125817.1632995-10-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:58:59 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 116247fe-e082-423a-2f7c-08d874f7ead4 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:483; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: xRu4JOCIjmGE5cRPW+14hVk1XC1yEyc02p+XrfRl+tHV6tfCgU8EqOUrkOxBjFkbeXXBtqpYWH/n4kWHMWunhy4fIFmksMoqGpP/FJ+nV0Qd2cv5o4FqU3jZbrIuXpJbQXsyk40mv8HXGMe9/Hz+7MazhSjDo8cWHQvw0tfi9ZrNiRh1MorBrdfLDlgt4C7wIevf7+Ltf0tjEtx1P0DDJu0xPiHddrCZDGP9NySd3Wo2iZ85/iSD2krgSEfty/j4mwUnd1Hqyyg3HQVLTWU8Q+QNd04PwHOjdL/6uXRkub90LXipXzm05qs73Aj5gps7hcmn1SjT7N5E9i/T1CpHHw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(396003)(366004)(136003)(39830400003)(346002)(376002)(186003)(316002)(4326008)(107886003)(8676002)(86362001)(26005)(2906002)(7696005)(478600001)(16526019)(956004)(6486002)(52116002)(36756003)(8936002)(2616005)(54906003)(5660300002)(1076003)(7416002)(30864003)(66574015)(6666004)(66556008)(66476007)(66946007)(83380400001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: e+IItD3qAjmCjUnAuFGy8AQQCHn4hfFx8x+MpE8GBrr73jhExsaID5fmHVdTjeAeQ8ysbwAVYU8II+egI8HXhl8POOzA1qjX2YM5wOX/vA+2zRbjo1p7GQvCVZq+WdK9h0eBGFCY3hXRiisvJnatXVEhZkH6S++nlCcaNq8KClgMXAQjIqGBJv9mp8XA+XbpAPlUy5Cep6x0LMEol7ChSYwGbM3DFITHWnYCYwPeWxjEThel6vvboKThcQILeXjjgL2Xz8sudd3Wn5Un/tsLtEt6UX/xoWTbBJ7wSNPbcUwnm7FHhUKJ444h9WDvUEHeB4HBgaXc0dvJJvfztgV3YfzNAZDAXR5xpA8SD1KMBm5fMcDfxz341RBfVQoWWVPCbQxPR4ia2wInTaMT1lLzTBXryNe81yhbvXxjDBaM8cykj6VxKWzZO1ekF4P0T3xVnrmkOVHhXIwN8x/O6AOZ6Or7oYA2LUwD3TYanDXYWLdTXHbtJflf2xopB7GzxQGp1CzopiSOrHoAnZmBGIRvHFARYbEXg7ut2bXsJe7pEx3N/T61FVYGyKptF0LdREzgQZg2JDNYjs8A5rOWluGWrW+pHuMMlr4Hhq2fCmlLu4+5RR22uxbHLFWol8W0k30MWdIvocHfL4t9uZuEiQmqjw== X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 116247fe-e082-423a-2f7c-08d874f7ead4 X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2020 12:59:02.0912 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: yWAoZDimSrirrBUnOcdqx772QBSe6MdbmLodkg7yZxz02EZ9gdJ8xXDdk7gbg00wk3Kx24kkBIBw7hE0zVZ/1g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/hwio.c | 352 +++++++++++++++++++++++++ drivers/net/wireless/silabs/wfx/hwio.h | 75 ++++++ 2 files changed, 427 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/hwio.c create mode 100644 drivers/net/wireless/silabs/wfx/hwio.h diff --git a/drivers/net/wireless/silabs/wfx/hwio.c b/drivers/net/wireless/silabs/wfx/hwio.c new file mode 100644 index 000000000000..36fbc5b5d64c --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hwio.c @@ -0,0 +1,352 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Low-level I/O functions. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include +#include +#include + +#include "hwio.h" +#include "wfx.h" +#include "bus.h" +#include "traces.h" + +/* + * Internal helpers. + * + * About CONFIG_VMAP_STACK: + * When CONFIG_VMAP_STACK is enabled, it is not possible to run DMA on stack + * allocated data. Functions below that work with registers (aka functions + * ending with "32") automatically reallocate buffers with kmalloc. However, + * functions that work with arbitrary length buffers let's caller to handle + * memory location. In doubt, enable CONFIG_DEBUG_SG to detect badly located + * buffer. + */ + +static int read32(struct wfx_dev *wdev, int reg, u32 *val) +{ + int ret; + __le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL); + + *val = ~0; // Never return undefined value + if (!tmp) + return -ENOMEM; + ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, tmp, + sizeof(u32)); + if (ret >= 0) + *val = le32_to_cpu(*tmp); + kfree(tmp); + if (ret) + dev_err(wdev->dev, "%s: bus communication error: %d\n", + __func__, ret); + return ret; +} + +static int write32(struct wfx_dev *wdev, int reg, u32 val) +{ + int ret; + __le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL); + + if (!tmp) + return -ENOMEM; + *tmp = cpu_to_le32(val); + ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, tmp, + sizeof(u32)); + kfree(tmp); + if (ret) + dev_err(wdev->dev, "%s: bus communication error: %d\n", + __func__, ret); + return ret; +} + +static int read32_locked(struct wfx_dev *wdev, int reg, u32 *val) +{ + int ret; + + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = read32(wdev, reg, val); + _trace_io_read32(reg, *val); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + return ret; +} + +static int write32_locked(struct wfx_dev *wdev, int reg, u32 val) +{ + int ret; + + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = write32(wdev, reg, val); + _trace_io_write32(reg, val); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + return ret; +} + +static int write32_bits_locked(struct wfx_dev *wdev, int reg, u32 mask, u32 val) +{ + int ret; + u32 val_r, val_w; + + WARN_ON(~mask & val); + val &= mask; + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = read32(wdev, reg, &val_r); + _trace_io_read32(reg, val_r); + if (ret < 0) + goto err; + val_w = (val_r & ~mask) | val; + if (val_w != val_r) { + ret = write32(wdev, reg, val_w); + _trace_io_write32(reg, val_w); + } +err: + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + return ret; +} + +static int indirect_read(struct wfx_dev *wdev, int reg, u32 addr, + void *buf, size_t len) +{ + int ret; + int i; + u32 cfg; + u32 prefetch; + + WARN_ON(len >= 0x2000); + WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT); + + if (reg == WFX_REG_AHB_DPORT) + prefetch = CFG_PREFETCH_AHB; + else if (reg == WFX_REG_SRAM_DPORT) + prefetch = CFG_PREFETCH_SRAM; + else + return -ENODEV; + + ret = write32(wdev, WFX_REG_BASE_ADDR, addr); + if (ret < 0) + goto err; + + ret = read32(wdev, WFX_REG_CONFIG, &cfg); + if (ret < 0) + goto err; + + ret = write32(wdev, WFX_REG_CONFIG, cfg | prefetch); + if (ret < 0) + goto err; + + for (i = 0; i < 20; i++) { + ret = read32(wdev, WFX_REG_CONFIG, &cfg); + if (ret < 0) + goto err; + if (!(cfg & prefetch)) + break; + usleep_range(200, 250); + } + if (i == 20) { + ret = -ETIMEDOUT; + goto err; + } + + ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, buf, len); + +err: + if (ret < 0) + memset(buf, 0xFF, len); // Never return undefined value + return ret; +} + +static int indirect_write(struct wfx_dev *wdev, int reg, u32 addr, + const void *buf, size_t len) +{ + int ret; + + WARN_ON(len >= 0x2000); + WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT); + ret = write32(wdev, WFX_REG_BASE_ADDR, addr); + if (ret < 0) + return ret; + + return wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, buf, len); +} + +static int indirect_read_locked(struct wfx_dev *wdev, int reg, u32 addr, + void *buf, size_t len) +{ + int ret; + + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = indirect_read(wdev, reg, addr, buf, len); + _trace_io_ind_read(reg, addr, buf, len); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + return ret; +} + +static int indirect_write_locked(struct wfx_dev *wdev, int reg, u32 addr, + const void *buf, size_t len) +{ + int ret; + + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = indirect_write(wdev, reg, addr, buf, len); + _trace_io_ind_write(reg, addr, buf, len); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + return ret; +} + +static int indirect_read32_locked(struct wfx_dev *wdev, int reg, + u32 addr, u32 *val) +{ + int ret; + __le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL); + + if (!tmp) + return -ENOMEM; + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = indirect_read(wdev, reg, addr, tmp, sizeof(u32)); + *val = le32_to_cpu(*tmp); + _trace_io_ind_read32(reg, addr, *val); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + kfree(tmp); + return ret; +} + +static int indirect_write32_locked(struct wfx_dev *wdev, int reg, + u32 addr, u32 val) +{ + int ret; + __le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL); + + if (!tmp) + return -ENOMEM; + *tmp = cpu_to_le32(val); + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = indirect_write(wdev, reg, addr, tmp, sizeof(u32)); + _trace_io_ind_write32(reg, addr, val); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + kfree(tmp); + return ret; +} + +int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t len) +{ + int ret; + + WARN((long)buf & 3, "%s: unaligned buffer", __func__); + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, + WFX_REG_IN_OUT_QUEUE, buf, len); + _trace_io_read(WFX_REG_IN_OUT_QUEUE, buf, len); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + if (ret) + dev_err(wdev->dev, "%s: bus communication error: %d\n", + __func__, ret); + return ret; +} + +int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t len) +{ + int ret; + + WARN((long)buf & 3, "%s: unaligned buffer", __func__); + wdev->hwbus_ops->lock(wdev->hwbus_priv); + ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, + WFX_REG_IN_OUT_QUEUE, buf, len); + _trace_io_write(WFX_REG_IN_OUT_QUEUE, buf, len); + wdev->hwbus_ops->unlock(wdev->hwbus_priv); + if (ret) + dev_err(wdev->dev, "%s: bus communication error: %d\n", + __func__, ret); + return ret; +} + +int sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len) +{ + return indirect_read_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len); +} + +int ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len) +{ + return indirect_read_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len); +} + +int sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len) +{ + return indirect_write_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len); +} + +int ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len) +{ + return indirect_write_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len); +} + +int sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val) +{ + return indirect_read32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val); +} + +int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val) +{ + return indirect_read32_locked(wdev, WFX_REG_AHB_DPORT, addr, val); +} + +int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val) +{ + return indirect_write32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val); +} + +int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val) +{ + return indirect_write32_locked(wdev, WFX_REG_AHB_DPORT, addr, val); +} + +int config_reg_read(struct wfx_dev *wdev, u32 *val) +{ + return read32_locked(wdev, WFX_REG_CONFIG, val); +} + +int config_reg_write(struct wfx_dev *wdev, u32 val) +{ + return write32_locked(wdev, WFX_REG_CONFIG, val); +} + +int config_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val) +{ + return write32_bits_locked(wdev, WFX_REG_CONFIG, mask, val); +} + +int control_reg_read(struct wfx_dev *wdev, u32 *val) +{ + return read32_locked(wdev, WFX_REG_CONTROL, val); +} + +int control_reg_write(struct wfx_dev *wdev, u32 val) +{ + return write32_locked(wdev, WFX_REG_CONTROL, val); +} + +int control_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val) +{ + return write32_bits_locked(wdev, WFX_REG_CONTROL, mask, val); +} + +int igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val) +{ + int ret; + + *val = ~0; // Never return undefined value + ret = write32_locked(wdev, WFX_REG_SET_GEN_R_W, IGPR_RW | index << 24); + if (ret) + return ret; + ret = read32_locked(wdev, WFX_REG_SET_GEN_R_W, val); + if (ret) + return ret; + *val &= IGPR_VALUE; + return ret; +} + +int igpr_reg_write(struct wfx_dev *wdev, int index, u32 val) +{ + return write32_locked(wdev, WFX_REG_SET_GEN_R_W, index << 24 | val); +} diff --git a/drivers/net/wireless/silabs/wfx/hwio.h b/drivers/net/wireless/silabs/wfx/hwio.h new file mode 100644 index 000000000000..0b8e4f7157df --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hwio.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Low-level API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_HWIO_H +#define WFX_HWIO_H + +#include + +struct wfx_dev; + +int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t buf_len); +int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t buf_len); + +int sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len); +int sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len); + +int ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len); +int ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len); + +int sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val); +int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val); + +int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val); +int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val); + +#define CFG_ERR_SPI_FRAME 0x00000001 // only with SPI +#define CFG_ERR_SDIO_BUF_MISMATCH 0x00000001 // only with SDIO +#define CFG_ERR_BUF_UNDERRUN 0x00000002 +#define CFG_ERR_DATA_IN_TOO_LARGE 0x00000004 +#define CFG_ERR_HOST_NO_OUT_QUEUE 0x00000008 +#define CFG_ERR_BUF_OVERRUN 0x00000010 +#define CFG_ERR_DATA_OUT_TOO_LARGE 0x00000020 +#define CFG_ERR_HOST_NO_IN_QUEUE 0x00000040 +#define CFG_ERR_HOST_CRC_MISS 0x00000080 // only with SDIO +#define CFG_SPI_IGNORE_CS 0x00000080 // only with SPI +#define CFG_BYTE_ORDER_MASK 0x00000300 // only writable with SPI +#define CFG_BYTE_ORDER_BADC 0x00000000 +#define CFG_BYTE_ORDER_DCBA 0x00000100 +#define CFG_BYTE_ORDER_ABCD 0x00000200 // SDIO always use this value +#define CFG_DIRECT_ACCESS_MODE 0x00000400 +#define CFG_PREFETCH_AHB 0x00000800 +#define CFG_DISABLE_CPU_CLK 0x00001000 +#define CFG_PREFETCH_SRAM 0x00002000 +#define CFG_CPU_RESET 0x00004000 +#define CFG_SDIO_DISABLE_IRQ 0x00008000 // only with SDIO +#define CFG_IRQ_ENABLE_DATA 0x00010000 +#define CFG_IRQ_ENABLE_WRDY 0x00020000 +#define CFG_CLK_RISE_EDGE 0x00040000 +#define CFG_SDIO_DISABLE_CRC_CHK 0x00080000 // only with SDIO +#define CFG_RESERVED 0x00F00000 +#define CFG_DEVICE_ID_MAJOR 0x07000000 +#define CFG_DEVICE_ID_RESERVED 0x78000000 +#define CFG_DEVICE_ID_TYPE 0x80000000 +int config_reg_read(struct wfx_dev *wdev, u32 *val); +int config_reg_write(struct wfx_dev *wdev, u32 val); +int config_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val); + +#define CTRL_NEXT_LEN_MASK 0x00000FFF +#define CTRL_WLAN_WAKEUP 0x00001000 +#define CTRL_WLAN_READY 0x00002000 +int control_reg_read(struct wfx_dev *wdev, u32 *val); +int control_reg_write(struct wfx_dev *wdev, u32 val); +int control_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val); + +#define IGPR_RW 0x80000000 +#define IGPR_INDEX 0x7F000000 +#define IGPR_VALUE 0x00FFFFFF +int igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val); +int igpr_reg_write(struct wfx_dev *wdev, int index, u32 val); + +#endif /* WFX_HWIO_H */ From patchwork Tue Oct 20 12:58:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846833 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 12CE3157C for ; 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X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 5C3KECnGHOxRZnOj8cBG797Uth8Fm7YR24ORQ2hzGQPwwP0cDFBWW91alkHRJq449P0hp5uZ/0CfiLkY6aWCqA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/fwio.c | 405 +++++++++++++++++++++++++ drivers/net/wireless/silabs/wfx/fwio.h | 15 + 2 files changed, 420 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/fwio.c create mode 100644 drivers/net/wireless/silabs/wfx/fwio.h diff --git a/drivers/net/wireless/silabs/wfx/fwio.c b/drivers/net/wireless/silabs/wfx/fwio.c new file mode 100644 index 000000000000..1b8aec02d169 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/fwio.c @@ -0,0 +1,405 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Firmware loading. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include +#include +#include +#include + +#include "fwio.h" +#include "wfx.h" +#include "hwio.h" + +// Addresses below are in SRAM area +#define WFX_DNLD_FIFO 0x09004000 +#define DNLD_BLOCK_SIZE 0x0400 +#define DNLD_FIFO_SIZE 0x8000 // (32 * DNLD_BLOCK_SIZE) +// Download Control Area (DCA) +#define WFX_DCA_IMAGE_SIZE 0x0900C000 +#define WFX_DCA_PUT 0x0900C004 +#define WFX_DCA_GET 0x0900C008 +#define WFX_DCA_HOST_STATUS 0x0900C00C +#define HOST_READY 0x87654321 +#define HOST_INFO_READ 0xA753BD99 +#define HOST_UPLOAD_PENDING 0xABCDDCBA +#define HOST_UPLOAD_COMPLETE 0xD4C64A99 +#define HOST_OK_TO_JUMP 0x174FC882 +#define WFX_DCA_NCP_STATUS 0x0900C010 +#define NCP_NOT_READY 0x12345678 +#define NCP_READY 0x87654321 +#define NCP_INFO_READY 0xBD53EF99 +#define NCP_DOWNLOAD_PENDING 0xABCDDCBA +#define NCP_DOWNLOAD_COMPLETE 0xCAFEFECA +#define NCP_AUTH_OK 0xD4C64A99 +#define NCP_AUTH_FAIL 0x174FC882 +#define NCP_PUB_KEY_RDY 0x7AB41D19 +#define WFX_DCA_FW_SIGNATURE 0x0900C014 +#define FW_SIGNATURE_SIZE 0x40 +#define WFX_DCA_FW_HASH 0x0900C054 +#define FW_HASH_SIZE 0x08 +#define WFX_DCA_FW_VERSION 0x0900C05C +#define FW_VERSION_SIZE 0x04 +#define WFX_DCA_RESERVED 0x0900C060 +#define DCA_RESERVED_SIZE 0x20 +#define WFX_STATUS_INFO 0x0900C080 +#define WFX_BOOTLOADER_LABEL 0x0900C084 +#define BOOTLOADER_LABEL_SIZE 0x3C +#define WFX_PTE_INFO 0x0900C0C0 +#define PTE_INFO_KEYSET_IDX 0x0D +#define PTE_INFO_SIZE 0x10 +#define WFX_ERR_INFO 0x0900C0D0 +#define ERR_INVALID_SEC_TYPE 0x05 +#define ERR_SIG_VERIF_FAILED 0x0F +#define ERR_AES_CTRL_KEY 0x10 +#define ERR_ECC_PUB_KEY 0x11 +#define ERR_MAC_KEY 0x18 + +#define DCA_TIMEOUT 50 // milliseconds +#define WAKEUP_TIMEOUT 200 // milliseconds + +static const char * const fwio_errors[] = { + [ERR_INVALID_SEC_TYPE] = "Invalid section type or wrong encryption", + [ERR_SIG_VERIF_FAILED] = "Signature verification failed", + [ERR_AES_CTRL_KEY] = "AES control key not initialized", + [ERR_ECC_PUB_KEY] = "ECC public key not initialized", + [ERR_MAC_KEY] = "MAC key not initialized", +}; + +/* + * request_firmware() allocate data using vmalloc(). It is not compatible with + * underlying hardware that use DMA. Function below detect this case and + * allocate a bounce buffer if necessary. + * + * Notice that, in doubt, you can enable CONFIG_DEBUG_SG to ask kernel to + * detect this problem at runtime (else, kernel silently fail). + * + * NOTE: it may also be possible to use 'pages' from struct firmware and avoid + * bounce buffer + */ +static int sram_write_dma_safe(struct wfx_dev *wdev, u32 addr, const u8 *buf, + size_t len) +{ + int ret; + const u8 *tmp; + + if (!virt_addr_valid(buf)) { + tmp = kmemdup(buf, len, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + } else { + tmp = buf; + } + ret = sram_buf_write(wdev, addr, tmp, len); + if (tmp != buf) + kfree(tmp); + return ret; +} + +static int get_firmware(struct wfx_dev *wdev, u32 keyset_chip, + const struct firmware **fw, int *file_offset) +{ + int keyset_file; + char filename[256]; + const char *data; + int ret; + + snprintf(filename, sizeof(filename), "%s_%02X.sec", + wdev->pdata.file_fw, keyset_chip); + ret = firmware_request_nowarn(fw, filename, wdev->dev); + if (ret) { + dev_info(wdev->dev, "can't load %s, falling back to %s.sec\n", + filename, wdev->pdata.file_fw); + snprintf(filename, sizeof(filename), "%s.sec", + wdev->pdata.file_fw); + ret = request_firmware(fw, filename, wdev->dev); + if (ret) { + dev_err(wdev->dev, "can't load %s\n", filename); + *fw = NULL; + return ret; + } + } + + data = (*fw)->data; + if (memcmp(data, "KEYSET", 6) != 0) { + // Legacy firmware format + *file_offset = 0; + keyset_file = 0x90; + } else { + *file_offset = 8; + keyset_file = (hex_to_bin(data[6]) * 16) | hex_to_bin(data[7]); + if (keyset_file < 0) { + dev_err(wdev->dev, "%s corrupted\n", filename); + release_firmware(*fw); + *fw = NULL; + return -EINVAL; + } + } + if (keyset_file != keyset_chip) { + dev_err(wdev->dev, "firmware keyset is incompatible with chip (file: 0x%02X, chip: 0x%02X)\n", + keyset_file, keyset_chip); + release_firmware(*fw); + *fw = NULL; + return -ENODEV; + } + wdev->keyset = keyset_file; + return 0; +} + +static int wait_ncp_status(struct wfx_dev *wdev, u32 status) +{ + ktime_t now, start; + u32 reg; + int ret; + + start = ktime_get(); + for (;;) { + ret = sram_reg_read(wdev, WFX_DCA_NCP_STATUS, ®); + if (ret < 0) + return -EIO; + now = ktime_get(); + if (reg == status) + break; + if (ktime_after(now, ktime_add_ms(start, DCA_TIMEOUT))) + return -ETIMEDOUT; + } + if (ktime_compare(now, start)) + dev_dbg(wdev->dev, "chip answer after %lldus\n", + ktime_us_delta(now, start)); + else + dev_dbg(wdev->dev, "chip answer immediately\n"); + return 0; +} + +static int upload_firmware(struct wfx_dev *wdev, const u8 *data, size_t len) +{ + int ret; + u32 offs, bytes_done = 0; + ktime_t now, start; + + if (len % DNLD_BLOCK_SIZE) { + dev_err(wdev->dev, "firmware size is not aligned. Buffer overrun will occur\n"); + return -EIO; + } + offs = 0; + while (offs < len) { + start = ktime_get(); + for (;;) { + now = ktime_get(); + if (offs + DNLD_BLOCK_SIZE - bytes_done < DNLD_FIFO_SIZE) + break; + if (ktime_after(now, ktime_add_ms(start, DCA_TIMEOUT))) + return -ETIMEDOUT; + ret = sram_reg_read(wdev, WFX_DCA_GET, &bytes_done); + if (ret < 0) + return ret; + } + if (ktime_compare(now, start)) + dev_dbg(wdev->dev, "answer after %lldus\n", + ktime_us_delta(now, start)); + + ret = sram_write_dma_safe(wdev, WFX_DNLD_FIFO + + (offs % DNLD_FIFO_SIZE), + data + offs, DNLD_BLOCK_SIZE); + if (ret < 0) + return ret; + + // WFx seems to not support writing 0 in this register during + // first loop + offs += DNLD_BLOCK_SIZE; + ret = sram_reg_write(wdev, WFX_DCA_PUT, offs); + if (ret < 0) + return ret; + } + return 0; +} + +static void print_boot_status(struct wfx_dev *wdev) +{ + u32 reg; + + sram_reg_read(wdev, WFX_STATUS_INFO, ®); + if (reg == 0x12345678) + return; + sram_reg_read(wdev, WFX_ERR_INFO, ®); + if (reg < ARRAY_SIZE(fwio_errors) && fwio_errors[reg]) + dev_info(wdev->dev, "secure boot: %s\n", fwio_errors[reg]); + else + dev_info(wdev->dev, "secure boot: Error %#02x\n", reg); +} + +static int load_firmware_secure(struct wfx_dev *wdev) +{ + const struct firmware *fw = NULL; + int header_size; + int fw_offset; + ktime_t start; + u8 *buf; + int ret; + + BUILD_BUG_ON(PTE_INFO_SIZE > BOOTLOADER_LABEL_SIZE); + buf = kmalloc(BOOTLOADER_LABEL_SIZE + 1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_READY); + ret = wait_ncp_status(wdev, NCP_INFO_READY); + if (ret) + goto error; + + sram_buf_read(wdev, WFX_BOOTLOADER_LABEL, buf, BOOTLOADER_LABEL_SIZE); + buf[BOOTLOADER_LABEL_SIZE] = 0; + dev_dbg(wdev->dev, "bootloader: \"%s\"\n", buf); + + sram_buf_read(wdev, WFX_PTE_INFO, buf, PTE_INFO_SIZE); + ret = get_firmware(wdev, buf[PTE_INFO_KEYSET_IDX], &fw, &fw_offset); + if (ret) + goto error; + header_size = fw_offset + FW_SIGNATURE_SIZE + FW_HASH_SIZE; + + sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_INFO_READ); + ret = wait_ncp_status(wdev, NCP_READY); + if (ret) + goto error; + + sram_reg_write(wdev, WFX_DNLD_FIFO, 0xFFFFFFFF); // Fifo init + sram_write_dma_safe(wdev, WFX_DCA_FW_VERSION, "\x01\x00\x00\x00", + FW_VERSION_SIZE); + sram_write_dma_safe(wdev, WFX_DCA_FW_SIGNATURE, fw->data + fw_offset, + FW_SIGNATURE_SIZE); + sram_write_dma_safe(wdev, WFX_DCA_FW_HASH, + fw->data + fw_offset + FW_SIGNATURE_SIZE, + FW_HASH_SIZE); + sram_reg_write(wdev, WFX_DCA_IMAGE_SIZE, fw->size - header_size); + sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_UPLOAD_PENDING); + ret = wait_ncp_status(wdev, NCP_DOWNLOAD_PENDING); + if (ret) + goto error; + + start = ktime_get(); + ret = upload_firmware(wdev, fw->data + header_size, + fw->size - header_size); + if (ret) + goto error; + dev_dbg(wdev->dev, "firmware load after %lldus\n", + ktime_us_delta(ktime_get(), start)); + + sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_UPLOAD_COMPLETE); + ret = wait_ncp_status(wdev, NCP_AUTH_OK); + // Legacy ROM support + if (ret < 0) + ret = wait_ncp_status(wdev, NCP_PUB_KEY_RDY); + if (ret < 0) + goto error; + sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_OK_TO_JUMP); + +error: + kfree(buf); + if (fw) + release_firmware(fw); + if (ret) + print_boot_status(wdev); + return ret; +} + +static int init_gpr(struct wfx_dev *wdev) +{ + int ret, i; + static const struct { + int index; + u32 value; + } gpr_init[] = { + { 0x07, 0x208775 }, + { 0x08, 0x2EC020 }, + { 0x09, 0x3C3C3C }, + { 0x0B, 0x322C44 }, + { 0x0C, 0xA06497 }, + }; + + for (i = 0; i < ARRAY_SIZE(gpr_init); i++) { + ret = igpr_reg_write(wdev, gpr_init[i].index, + gpr_init[i].value); + if (ret < 0) + return ret; + dev_dbg(wdev->dev, " index %02x: %08x\n", + gpr_init[i].index, gpr_init[i].value); + } + return 0; +} + +int wfx_init_device(struct wfx_dev *wdev) +{ + int ret; + int hw_revision, hw_type; + int wakeup_timeout = 50; // ms + ktime_t now, start; + u32 reg; + + reg = CFG_DIRECT_ACCESS_MODE | CFG_CPU_RESET | CFG_BYTE_ORDER_ABCD; + if (wdev->pdata.use_rising_clk) + reg |= CFG_CLK_RISE_EDGE; + ret = config_reg_write(wdev, reg); + if (ret < 0) { + dev_err(wdev->dev, "bus returned an error during first write access. Host configuration error?\n"); + return -EIO; + } + + ret = config_reg_read(wdev, ®); + if (ret < 0) { + dev_err(wdev->dev, "bus returned an error during first read access. Bus configuration error?\n"); + return -EIO; + } + if (reg == 0 || reg == ~0) { + dev_err(wdev->dev, "chip mute. Bus configuration error or chip wasn't reset?\n"); + return -EIO; + } + dev_dbg(wdev->dev, "initial config register value: %08x\n", reg); + + hw_revision = FIELD_GET(CFG_DEVICE_ID_MAJOR, reg); + if (hw_revision == 0) { + dev_err(wdev->dev, "bad hardware revision number: %d\n", + hw_revision); + return -ENODEV; + } + hw_type = FIELD_GET(CFG_DEVICE_ID_TYPE, reg); + if (hw_type == 1) { + dev_notice(wdev->dev, "development hardware detected\n"); + wakeup_timeout = 2000; + } + + ret = init_gpr(wdev); + if (ret < 0) + return ret; + + ret = control_reg_write(wdev, CTRL_WLAN_WAKEUP); + if (ret < 0) + return -EIO; + start = ktime_get(); + for (;;) { + ret = control_reg_read(wdev, ®); + now = ktime_get(); + if (reg & CTRL_WLAN_READY) + break; + if (ktime_after(now, ktime_add_ms(start, wakeup_timeout))) { + dev_err(wdev->dev, "chip didn't wake up. Chip wasn't reset?\n"); + return -ETIMEDOUT; + } + } + dev_dbg(wdev->dev, "chip wake up after %lldus\n", + ktime_us_delta(now, start)); + + ret = config_reg_write_bits(wdev, CFG_CPU_RESET, 0); + if (ret < 0) + return ret; + ret = load_firmware_secure(wdev); + if (ret < 0) + return ret; + return config_reg_write_bits(wdev, + CFG_DIRECT_ACCESS_MODE | + CFG_IRQ_ENABLE_DATA | + CFG_IRQ_ENABLE_WRDY, + CFG_IRQ_ENABLE_DATA); +} diff --git a/drivers/net/wireless/silabs/wfx/fwio.h b/drivers/net/wireless/silabs/wfx/fwio.h new file mode 100644 index 000000000000..6028f92503fe --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/fwio.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Firmware loading. + * + * Copyright (c) 2017-2019, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_FWIO_H +#define WFX_FWIO_H + +struct wfx_dev; + +int wfx_init_device(struct wfx_dev *wdev); + +#endif /* WFX_FWIO_H */ From patchwork Tue Oct 20 12:58:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846765 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8107114B7 for ; Tue, 20 Oct 2020 12:59:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48EC922473 for ; Tue, 20 Oct 2020 12:59:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="R0JHJML+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406941AbgJTM7a (ORCPT ); Tue, 20 Oct 2020 08:59:30 -0400 Received: from mail-dm6nam12on2042.outbound.protection.outlook.com ([40.107.243.42]:21473 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406912AbgJTM70 (ORCPT ); Tue, 20 Oct 2020 08:59:26 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GynIvqIvMHAiW4GyryxJmlNtlwUEeGe8efKzpgghNPVCUcbjp+qBI4nbVAmWgfA2PJoQh0m6rn33qDNyY5wzPDKe+tdliIkQB1kI//HhJIliYtUr6gPvJOgFUZGQK+NcezwqppYIvuNFK8FjuJjJqp3QiBh4DXdcI9KFgbbpo5z9gRKB4d1UIW/n95DI0vdy1eJqIIfMBm2wOEpGSbdkMfzh/eTbFUmZKJvpl5Gz4tEmyXzIYEoS3DeHZEMHpy9sT/fNrkQ5YYKBJUOaNAjfN49TGKeoIgwfU5LCwncF/EJgkFMKEAQZ9Meh26YCnxHnOTAVJLcfnzHCbjulHQNMaQ== 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-SenderADCheck; bh=LOMYGqJsd9ipwNGZZfFpBGAlsHkXK1v9m54QebKnMEI=; b=nIXd2UO9MZrgW0rxAfiAFpjxD9Nbf2YMqml7xwV0mVYSQCHAmLemD4t2++VFai4OU1TwUS98KemylU5roEjcp00hfExs71MwuNoSPAch1DPZxgdRyPd3hNP3FCexUafeescm06AZJHU6na28N53iqwyoTT91hPeXAMO10tVhgMLUT/17iCbQ7522flSiudj6/qvJmu3S29ULqCf2pJe0hbj01w0FbGKmbtBBjo9CXdxIiEaK8OfDKJRga4m8KvFPTTzouNHz7YktLX8lAmsnHovQayiPMl5o8JXpatOM6d3FL7CT1dbF4OCMcNq9S+CgQfqmv7JDGfH3ByM84oCgXw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=LOMYGqJsd9ipwNGZZfFpBGAlsHkXK1v9m54QebKnMEI=; b=R0JHJML+nD/Mrt3oFjIssuPiBgnUhcq0xLZ09sZw7XjJXpcFdNpeDHnZXBH04vzaCdnSV3Dtgswhf74h8uuxsyCDbLIjkXcXLdGeoG5YqmfPJbGYhm3fJysgrR6cNvubQWTynC/wl4WTGqRRu9c1FxHZeYWEXRRhMMWCkLhXay8= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:59:07 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:59:07 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 11/24] wfx: add bh.c/bh.h Date: Tue, 20 Oct 2020 14:58:04 +0200 Message-Id: <20201020125817.1632995-12-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:04 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: c8382e0d-55d6-4868-9150-08d874f7ee19 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4502; 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+ + if (!wdev->pdata.gpio_wakeup) + return; + if (gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup) > 0) + return; + + if (wfx_api_older_than(wdev, 1, 4)) { + gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1); + if (!completion_done(&wdev->hif.ctrl_ready)) + usleep_range(2000, 2500); + return; + } + for (;;) { + gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1); + // completion.h does not provide any function to wait + // completion without consume it (a kind of + // wait_for_completion_done_timeout()). So we have to emulate + // it. + if (wait_for_completion_timeout(&wdev->hif.ctrl_ready, + msecs_to_jiffies(2))) { + complete(&wdev->hif.ctrl_ready); + return; + } else if (max_retry-- > 0) { + // Older firmwares have a race in sleep/wake-up process. + // Redo the process is sufficient to unfreeze the + // chip. + dev_err(wdev->dev, "timeout while wake up chip\n"); + gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0); + usleep_range(2000, 2500); + } else { + dev_err(wdev->dev, "max wake-up retries reached\n"); + return; + } + } +} + +static void device_release(struct wfx_dev *wdev) +{ + if (!wdev->pdata.gpio_wakeup) + return; + + gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0); +} + +static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf) +{ + struct sk_buff *skb; + struct hif_msg *hif; + size_t alloc_len; + size_t computed_len; + int release_count; + int piggyback = 0; + + WARN(read_len > round_down(0xFFF, 2) * sizeof(u16), + "%s: request exceed WFx capability", __func__); + + // Add 2 to take into account piggyback size + alloc_len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, read_len + 2); + skb = dev_alloc_skb(alloc_len); + if (!skb) + return -ENOMEM; + + if (wfx_data_read(wdev, skb->data, alloc_len)) + goto err; + + piggyback = le16_to_cpup((__le16 *)(skb->data + alloc_len - 2)); + _trace_piggyback(piggyback, false); + + hif = (struct hif_msg *)skb->data; + WARN(hif->encrypted & 0x3, "encryption is unsupported"); + if (WARN(read_len < sizeof(struct hif_msg), "corrupted read")) + goto err; + computed_len = le16_to_cpu(hif->len); + computed_len = round_up(computed_len, 2); + if (computed_len != read_len) { + dev_err(wdev->dev, "inconsistent message length: %zu != %zu\n", + computed_len, read_len); + print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, 16, 1, + hif, read_len, true); + goto err; + } + + if (!(hif->id & HIF_ID_IS_INDICATION)) { + (*is_cnf)++; + if (hif->id == HIF_CNF_ID_MULTI_TRANSMIT) + release_count = ((struct hif_cnf_multi_transmit *)hif->body)->num_tx_confs; + else + release_count = 1; + WARN(wdev->hif.tx_buffers_used < release_count, "corrupted buffer counter"); + wdev->hif.tx_buffers_used -= release_count; + } + _trace_hif_recv(hif, wdev->hif.tx_buffers_used); + + if (hif->id != HIF_IND_ID_EXCEPTION && hif->id != HIF_IND_ID_ERROR) { + if (hif->seqnum != wdev->hif.rx_seqnum) + dev_warn(wdev->dev, "wrong message sequence: %d != %d\n", + hif->seqnum, wdev->hif.rx_seqnum); + wdev->hif.rx_seqnum = (hif->seqnum + 1) % (HIF_COUNTER_MAX + 1); + } + + skb_put(skb, le16_to_cpu(hif->len)); + // wfx_handle_rx takes care on SKB livetime + wfx_handle_rx(wdev, skb); + if (!wdev->hif.tx_buffers_used) + wake_up(&wdev->hif.tx_buffers_empty); + + return piggyback; + +err: + if (skb) + dev_kfree_skb(skb); + return -EIO; +} + +static int bh_work_rx(struct wfx_dev *wdev, int max_msg, int *num_cnf) +{ + size_t len; + int i; + int ctrl_reg, piggyback; + + piggyback = 0; + for (i = 0; i < max_msg; i++) { + if (piggyback & CTRL_NEXT_LEN_MASK) + ctrl_reg = piggyback; + else if (try_wait_for_completion(&wdev->hif.ctrl_ready)) + ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, 0); + else + ctrl_reg = 0; + if (!(ctrl_reg & CTRL_NEXT_LEN_MASK)) + return i; + // ctrl_reg units are 16bits words + len = (ctrl_reg & CTRL_NEXT_LEN_MASK) * 2; + piggyback = rx_helper(wdev, len, num_cnf); + if (piggyback < 0) + return i; + if (!(piggyback & CTRL_WLAN_READY)) + dev_err(wdev->dev, "unexpected piggyback value: ready bit not set: %04x\n", + piggyback); + } + if (piggyback & CTRL_NEXT_LEN_MASK) { + ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, piggyback); + complete(&wdev->hif.ctrl_ready); + if (ctrl_reg) + dev_err(wdev->dev, "unexpected IRQ happened: %04x/%04x\n", + ctrl_reg, piggyback); + } + return i; +} + +static void tx_helper(struct wfx_dev *wdev, struct hif_msg *hif) +{ + int ret; + void *data; + bool is_encrypted = false; + size_t len = le16_to_cpu(hif->len); + + WARN(len < sizeof(*hif), "try to send corrupted data"); + + hif->seqnum = wdev->hif.tx_seqnum; + wdev->hif.tx_seqnum = (wdev->hif.tx_seqnum + 1) % (HIF_COUNTER_MAX + 1); + + data = hif; + WARN(len > wdev->hw_caps.size_inp_ch_buf, + "%s: request exceed WFx capability: %zu > %d\n", __func__, + len, wdev->hw_caps.size_inp_ch_buf); + len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, len); + ret = wfx_data_write(wdev, data, len); + if (ret) + goto end; + + wdev->hif.tx_buffers_used++; + _trace_hif_send(hif, wdev->hif.tx_buffers_used); +end: + if (is_encrypted) + kfree(data); +} + +static int bh_work_tx(struct wfx_dev *wdev, int max_msg) +{ + struct hif_msg *hif; + int i; + + for (i = 0; i < max_msg; i++) { + hif = NULL; + if (wdev->hif.tx_buffers_used < wdev->hw_caps.num_inp_ch_bufs) { + if (try_wait_for_completion(&wdev->hif_cmd.ready)) { + WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error"); + hif = wdev->hif_cmd.buf_send; + } else { + hif = wfx_tx_queues_get(wdev); + } + } + if (!hif) + return i; + tx_helper(wdev, hif); + } + return i; +} + +/* In SDIO mode, it is necessary to make an access to a register to acknowledge + * last received message. It could be possible to restrict this acknowledge to + * SDIO mode and only if last operation was rx. + */ +static void ack_sdio_data(struct wfx_dev *wdev) +{ + u32 cfg_reg; + + config_reg_read(wdev, &cfg_reg); + if (cfg_reg & 0xFF) { + dev_warn(wdev->dev, "chip reports errors: %02x\n", + cfg_reg & 0xFF); + config_reg_write_bits(wdev, 0xFF, 0x00); + } +} + +static void bh_work(struct work_struct *work) +{ + struct wfx_dev *wdev = container_of(work, struct wfx_dev, hif.bh); + int stats_req = 0, stats_cnf = 0, stats_ind = 0; + bool release_chip = false, last_op_is_rx = false; + int num_tx, num_rx; + + device_wakeup(wdev); + do { + num_tx = bh_work_tx(wdev, 32); + stats_req += num_tx; + if (num_tx) + last_op_is_rx = false; + num_rx = bh_work_rx(wdev, 32, &stats_cnf); + stats_ind += num_rx; + if (num_rx) + last_op_is_rx = true; + } while (num_rx || num_tx); + stats_ind -= stats_cnf; + + if (last_op_is_rx) + ack_sdio_data(wdev); + if (!wdev->hif.tx_buffers_used && !work_pending(work)) { + device_release(wdev); + release_chip = true; + } + _trace_bh_stats(stats_ind, stats_req, stats_cnf, + wdev->hif.tx_buffers_used, release_chip); +} + +/* + * An IRQ from chip did occur + */ +void wfx_bh_request_rx(struct wfx_dev *wdev) +{ + u32 cur, prev; + + control_reg_read(wdev, &cur); + prev = atomic_xchg(&wdev->hif.ctrl_reg, cur); + complete(&wdev->hif.ctrl_ready); + queue_work(system_highpri_wq, &wdev->hif.bh); + + if (!(cur & CTRL_NEXT_LEN_MASK)) + dev_err(wdev->dev, "unexpected control register value: length field is 0: %04x\n", + cur); + if (prev != 0) + dev_err(wdev->dev, "received IRQ but previous data was not (yet) read: %04x/%04x\n", + prev, cur); +} + +/* + * Driver want to send data + */ +void wfx_bh_request_tx(struct wfx_dev *wdev) +{ + queue_work(system_highpri_wq, &wdev->hif.bh); +} + +/* + * If IRQ is not available, this function allow to manually poll the control + * register and simulate an IRQ ahen an event happened. + * + * Note that the device has a bug: If an IRQ raise while host read control + * register, the IRQ is lost. So, use this function carefully (only duing + * device initialisation). + */ +void wfx_bh_poll_irq(struct wfx_dev *wdev) +{ + ktime_t now, start; + u32 reg; + + WARN(!wdev->poll_irq, "unexpected IRQ polling can mask IRQ"); + start = ktime_get(); + for (;;) { + control_reg_read(wdev, ®); + now = ktime_get(); + if (reg & 0xFFF) + break; + if (ktime_after(now, ktime_add_ms(start, 1000))) { + dev_err(wdev->dev, "time out while polling control register\n"); + return; + } + udelay(200); + } + wfx_bh_request_rx(wdev); +} + +void wfx_bh_register(struct wfx_dev *wdev) +{ + INIT_WORK(&wdev->hif.bh, bh_work); + init_completion(&wdev->hif.ctrl_ready); + init_waitqueue_head(&wdev->hif.tx_buffers_empty); +} + +void wfx_bh_unregister(struct wfx_dev *wdev) +{ + flush_work(&wdev->hif.bh); +} diff --git a/drivers/net/wireless/silabs/wfx/bh.h b/drivers/net/wireless/silabs/wfx/bh.h new file mode 100644 index 000000000000..78c49329e22a --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/bh.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Interrupt bottom half. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_BH_H +#define WFX_BH_H + +#include +#include +#include + +struct wfx_dev; + +struct wfx_hif { + struct work_struct bh; + struct completion ctrl_ready; + wait_queue_head_t tx_buffers_empty; + atomic_t ctrl_reg; + int rx_seqnum; + int tx_seqnum; + int tx_buffers_used; +}; + +void wfx_bh_register(struct wfx_dev *wdev); +void wfx_bh_unregister(struct wfx_dev *wdev); +void wfx_bh_request_rx(struct wfx_dev *wdev); +void wfx_bh_request_tx(struct wfx_dev *wdev); +void wfx_bh_poll_irq(struct wfx_dev *wdev); + +#endif /* WFX_BH_H */ From patchwork Tue Oct 20 12:58:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846823 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C316C14B7 for ; Tue, 20 Oct 2020 13:01:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 87F62224B1 for ; 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dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2656.namprd11.prod.outlook.com (2603:10b6:805:58::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:59:10 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:59:10 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 12/24] wfx: add hif_api_*.h Date: Tue, 20 Oct 2020 14:58:05 +0200 Message-Id: <20201020125817.1632995-13-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:07 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0a49bc54-d784-44e0-c97a-08d874f7ef91 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:111; 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+ +enum hif_confirmations_ids { + HIF_CNF_ID_RESET = 0x0a, + HIF_CNF_ID_READ_MIB = 0x05, + HIF_CNF_ID_WRITE_MIB = 0x06, + HIF_CNF_ID_START_SCAN = 0x07, + HIF_CNF_ID_STOP_SCAN = 0x08, + HIF_CNF_ID_TX = 0x04, + HIF_CNF_ID_MULTI_TRANSMIT = 0x1e, + HIF_CNF_ID_JOIN = 0x0b, + HIF_CNF_ID_SET_PM_MODE = 0x10, + HIF_CNF_ID_SET_BSS_PARAMS = 0x11, + HIF_CNF_ID_ADD_KEY = 0x0c, + HIF_CNF_ID_REMOVE_KEY = 0x0d, + HIF_CNF_ID_EDCA_QUEUE_PARAMS = 0x13, + HIF_CNF_ID_START = 0x17, + HIF_CNF_ID_BEACON_TRANSMIT = 0x18, + HIF_CNF_ID_UPDATE_IE = 0x1b, + HIF_CNF_ID_MAP_LINK = 0x1c, +}; + +enum hif_indications_ids { + HIF_IND_ID_RX = 0x84, + HIF_IND_ID_SCAN_CMPL = 0x86, + HIF_IND_ID_JOIN_COMPLETE = 0x8f, + HIF_IND_ID_SET_PM_MODE_CMPL = 0x89, + HIF_IND_ID_SUSPEND_RESUME_TX = 0x8c, + HIF_IND_ID_EVENT = 0x85 +}; + +struct hif_req_reset { + u8 reset_stat:1; + u8 reset_all_int:1; + u8 reserved1:6; + u8 reserved2[3]; +} __packed; + +struct hif_cnf_reset { + __le32 status; +} __packed; + +struct hif_req_read_mib { + __le16 mib_id; + __le16 reserved; +} __packed; + +struct hif_cnf_read_mib { + __le32 status; + __le16 mib_id; + __le16 length; + u8 mib_data[]; +} __packed; + +struct hif_req_write_mib { + __le16 mib_id; + __le16 length; + u8 mib_data[]; +} __packed; + +struct hif_cnf_write_mib { + __le32 status; +} __packed; + +struct hif_req_update_ie { + u8 beacon:1; + u8 probe_resp:1; + u8 probe_req:1; + u8 reserved1:5; + u8 reserved2; + __le16 num_ies; + struct element ie[]; +} __packed; + +struct hif_cnf_update_ie { + __le32 status; +} __packed; + +struct hif_ssid_def { + __le32 ssid_length; + u8 ssid[IEEE80211_MAX_SSID_LEN]; +} __packed; + +#define HIF_API_MAX_NB_SSIDS 2 +#define HIF_API_MAX_NB_CHANNELS 14 + +struct hif_req_start_scan_alt { + u8 band; + u8 maintain_current_bss:1; + u8 periodic:1; + u8 reserved1:6; + u8 disallow_ps:1; + u8 reserved2:1; + u8 short_preamble:1; + u8 reserved3:5; + u8 max_transmit_rate; + __le16 periodic_interval; + u8 reserved4; + s8 periodic_rssi_thr; + u8 num_of_probe_requests; + u8 probe_delay; + u8 num_of_ssids; + u8 num_of_channels; + __le32 min_channel_time; + __le32 max_channel_time; + __le32 tx_power_level; // signed value + struct hif_ssid_def ssid_def[HIF_API_MAX_NB_SSIDS]; + u8 channel_list[]; +} __packed; + +struct hif_cnf_start_scan { + __le32 status; +} __packed; + +struct hif_cnf_stop_scan { + __le32 status; +} __packed; + +enum hif_pm_mode_status { + HIF_PM_MODE_ACTIVE = 0x0, + HIF_PM_MODE_PS = 0x1, + HIF_PM_MODE_UNDETERMINED = 0x2 +}; + +struct hif_ind_scan_cmpl { + __le32 status; + u8 pm_mode; + u8 num_channels_completed; + __le16 reserved; +} __packed; + +enum hif_queue_id { + HIF_QUEUE_ID_BACKGROUND = 0x0, + HIF_QUEUE_ID_BESTEFFORT = 0x1, + HIF_QUEUE_ID_VIDEO = 0x2, + HIF_QUEUE_ID_VOICE = 0x3 +}; + +enum hif_frame_format { + HIF_FRAME_FORMAT_NON_HT = 0x0, + HIF_FRAME_FORMAT_MIXED_FORMAT_HT = 0x1, + HIF_FRAME_FORMAT_GF_HT_11N = 0x2 +}; + +struct hif_req_tx { + // packet_id is not interpreted by the device, so it is not necessary to + // declare it little endian + u32 packet_id; + u8 max_tx_rate; + u8 queue_id:2; + u8 peer_sta_id:4; + u8 reserved1:2; + u8 more:1; + u8 fc_offset:3; + u8 after_dtim:1; + u8 reserved2:3; + u8 start_exp:1; + u8 reserved3:3; + u8 retry_policy_index:4; + __le32 reserved4; + __le32 expire_time; + u8 frame_format:4; + u8 fec_coding:1; + u8 short_gi:1; + u8 reserved5:1; + u8 stbc:1; + u8 reserved6; + u8 aggregation:1; + u8 reserved7:7; + u8 reserved8; + u8 frame[]; +} __packed; + +enum hif_qos_ackplcy { + HIF_QOS_ACKPLCY_NORMAL = 0x0, + HIF_QOS_ACKPLCY_TXNOACK = 0x1, + HIF_QOS_ACKPLCY_NOEXPACK = 0x2, + HIF_QOS_ACKPLCY_BLCKACK = 0x3 +}; + +struct hif_cnf_tx { + __le32 status; + // packet_id is copied from struct hif_req_tx without been interpreted + // by the device, so it is not necessary to declare it little endian + u32 packet_id; + u8 txed_rate; + u8 ack_failures; + u8 aggr:1; + u8 requeue:1; + u8 ack_policy:2; + u8 txop_limit:1; + u8 reserved1:3; + u8 reserved2; + __le32 media_delay; + __le32 tx_queue_delay; +} __packed; + +struct hif_cnf_multi_transmit { + u8 num_tx_confs; + u8 reserved[3]; + struct hif_cnf_tx tx_conf_payload[]; +} __packed; + +enum hif_ri_flags_encrypt { + HIF_RI_FLAGS_UNENCRYPTED = 0x0, + HIF_RI_FLAGS_WEP_ENCRYPTED = 0x1, + HIF_RI_FLAGS_TKIP_ENCRYPTED = 0x2, + HIF_RI_FLAGS_AES_ENCRYPTED = 0x3, + HIF_RI_FLAGS_WAPI_ENCRYPTED = 0x4 +}; + +struct hif_ind_rx { + __le32 status; + u8 channel_number; + u8 reserved1; + u8 rxed_rate; + u8 rcpi_rssi; + u8 encryp:3; + u8 in_aggr:1; + u8 first_aggr:1; + u8 last_aggr:1; + u8 defrag:1; + u8 beacon:1; + u8 tim:1; + u8 bitmap:1; + u8 match_ssid:1; + u8 match_bssid:1; + u8 more:1; + u8 reserved2:1; + u8 ht:1; + u8 stbc:1; + u8 match_uc_addr:1; + u8 match_mc_addr:1; + u8 match_bc_addr:1; + u8 key_type:1; + u8 key_index:4; + u8 reserved3:1; + u8 peer_sta_id:4; + u8 reserved4:2; + u8 reserved5:1; + u8 frame[]; +} __packed; + +struct hif_req_edca_queue_params { + u8 queue_id; + u8 reserved1; + u8 aifsn; + u8 reserved2; + __le16 cw_min; + __le16 cw_max; + __le16 tx_op_limit; + __le16 allowed_medium_time; + __le32 reserved3; +} __packed; + +struct hif_cnf_edca_queue_params { + __le32 status; +} __packed; + +struct hif_req_join { + u8 infrastructure_bss_mode:1; + u8 reserved1:7; + u8 band; + u8 channel_number; + u8 reserved2; + u8 bssid[ETH_ALEN]; + __le16 atim_window; + u8 short_preamble:1; + u8 reserved3:7; + u8 probe_for_join; + u8 reserved4; + u8 reserved5:2; + u8 force_no_beacon:1; + u8 force_with_ind:1; + u8 reserved6:4; + __le32 ssid_length; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + __le32 beacon_interval; + __le32 basic_rate_set; +} __packed; + +struct hif_cnf_join { + __le32 status; +} __packed; + +struct hif_ind_join_complete { + __le32 status; +} __packed; + +struct hif_req_set_bss_params { + u8 lost_count_only:1; + u8 reserved:7; + u8 beacon_lost_count; + __le16 aid; + __le32 operational_rate_set; +} __packed; + +struct hif_cnf_set_bss_params { + __le32 status; +} __packed; + +struct hif_req_set_pm_mode { + u8 enter_psm:1; + u8 reserved:6; + u8 fast_psm:1; + u8 fast_psm_idle_period; + u8 ap_psm_change_period; + u8 min_auto_ps_poll_period; +} __packed; + +struct hif_cnf_set_pm_mode { + __le32 status; +} __packed; + +struct hif_ind_set_pm_mode_cmpl { + __le32 status; + u8 pm_mode; + u8 reserved[3]; +} __packed; + +struct hif_req_start { + u8 mode; + u8 band; + u8 channel_number; + u8 reserved1; + __le32 reserved2; + __le32 beacon_interval; + u8 dtim_period; + u8 short_preamble:1; + u8 reserved3:7; + u8 reserved4; + u8 ssid_length; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + __le32 basic_rate_set; +} __packed; + +struct hif_cnf_start { + __le32 status; +} __packed; + +struct hif_req_beacon_transmit { + u8 enable_beaconing; + u8 reserved[3]; +} __packed; + +struct hif_cnf_beacon_transmit { + __le32 status; +} __packed; + +#define HIF_LINK_ID_MAX 14 +#define HIF_LINK_ID_NOT_ASSOCIATED (HIF_LINK_ID_MAX + 1) + +struct hif_req_map_link { + u8 mac_addr[ETH_ALEN]; + u8 unmap:1; + u8 mfpc:1; + u8 reserved:6; + u8 peer_sta_id; +} __packed; + +struct hif_cnf_map_link { + __le32 status; +} __packed; + +struct hif_ind_suspend_resume_tx { + u8 resume:1; + u8 reserved1:2; + u8 bc_mc_only:1; + u8 reserved2:4; + u8 reserved3; + __le16 peer_sta_set; +} __packed; + + +#define MAX_KEY_ENTRIES 24 +#define HIF_API_WEP_KEY_DATA_SIZE 16 +#define HIF_API_TKIP_KEY_DATA_SIZE 16 +#define HIF_API_RX_MIC_KEY_SIZE 8 +#define HIF_API_TX_MIC_KEY_SIZE 8 +#define HIF_API_AES_KEY_DATA_SIZE 16 +#define HIF_API_WAPI_KEY_DATA_SIZE 16 +#define HIF_API_MIC_KEY_DATA_SIZE 16 +#define HIF_API_IGTK_KEY_DATA_SIZE 16 +#define HIF_API_RX_SEQUENCE_COUNTER_SIZE 8 +#define HIF_API_IPN_SIZE 8 + +enum hif_key_type { + HIF_KEY_TYPE_WEP_DEFAULT = 0x0, + HIF_KEY_TYPE_WEP_PAIRWISE = 0x1, + HIF_KEY_TYPE_TKIP_GROUP = 0x2, + HIF_KEY_TYPE_TKIP_PAIRWISE = 0x3, + HIF_KEY_TYPE_AES_GROUP = 0x4, + HIF_KEY_TYPE_AES_PAIRWISE = 0x5, + HIF_KEY_TYPE_WAPI_GROUP = 0x6, + HIF_KEY_TYPE_WAPI_PAIRWISE = 0x7, + HIF_KEY_TYPE_IGTK_GROUP = 0x8, + HIF_KEY_TYPE_NONE = 0x9 +}; + +struct hif_wep_pairwise_key { + u8 peer_address[ETH_ALEN]; + u8 reserved; + u8 key_length; + u8 key_data[HIF_API_WEP_KEY_DATA_SIZE]; +} __packed; + +struct hif_wep_group_key { + u8 key_id; + u8 key_length; + u8 reserved[2]; + u8 key_data[HIF_API_WEP_KEY_DATA_SIZE]; +} __packed; + +struct hif_tkip_pairwise_key { + u8 peer_address[ETH_ALEN]; + u8 reserved[2]; + u8 tkip_key_data[HIF_API_TKIP_KEY_DATA_SIZE]; + u8 rx_mic_key[HIF_API_RX_MIC_KEY_SIZE]; + u8 tx_mic_key[HIF_API_TX_MIC_KEY_SIZE]; +} __packed; + +struct hif_tkip_group_key { + u8 tkip_key_data[HIF_API_TKIP_KEY_DATA_SIZE]; + u8 rx_mic_key[HIF_API_RX_MIC_KEY_SIZE]; + u8 key_id; + u8 reserved[3]; + u8 rx_sequence_counter[HIF_API_RX_SEQUENCE_COUNTER_SIZE]; +} __packed; + +struct hif_aes_pairwise_key { + u8 peer_address[ETH_ALEN]; + u8 reserved[2]; + u8 aes_key_data[HIF_API_AES_KEY_DATA_SIZE]; +} __packed; + +struct hif_aes_group_key { + u8 aes_key_data[HIF_API_AES_KEY_DATA_SIZE]; + u8 key_id; + u8 reserved[3]; + u8 rx_sequence_counter[HIF_API_RX_SEQUENCE_COUNTER_SIZE]; +} __packed; + +struct hif_wapi_pairwise_key { + u8 peer_address[ETH_ALEN]; + u8 key_id; + u8 reserved; + u8 wapi_key_data[HIF_API_WAPI_KEY_DATA_SIZE]; + u8 mic_key_data[HIF_API_MIC_KEY_DATA_SIZE]; +} __packed; + +struct hif_wapi_group_key { + u8 wapi_key_data[HIF_API_WAPI_KEY_DATA_SIZE]; + u8 mic_key_data[HIF_API_MIC_KEY_DATA_SIZE]; + u8 key_id; + u8 reserved[3]; +} __packed; + +struct hif_igtk_group_key { + u8 igtk_key_data[HIF_API_IGTK_KEY_DATA_SIZE]; + u8 key_id; + u8 reserved[3]; + u8 ipn[HIF_API_IPN_SIZE]; +} __packed; + +struct hif_req_add_key { + u8 type; + u8 entry_index; + u8 int_id:2; + u8 reserved1:6; + u8 reserved2; + union { + struct hif_wep_pairwise_key wep_pairwise_key; + struct hif_wep_group_key wep_group_key; + struct hif_tkip_pairwise_key tkip_pairwise_key; + struct hif_tkip_group_key tkip_group_key; + struct hif_aes_pairwise_key aes_pairwise_key; + struct hif_aes_group_key aes_group_key; + struct hif_wapi_pairwise_key wapi_pairwise_key; + struct hif_wapi_group_key wapi_group_key; + struct hif_igtk_group_key igtk_group_key; + } key; +} __packed; + +struct hif_cnf_add_key { + __le32 status; +} __packed; + +struct hif_req_remove_key { + u8 entry_index; + u8 reserved[3]; +} __packed; + +struct hif_cnf_remove_key { + __le32 status; +} __packed; + +enum hif_event_ind { + HIF_EVENT_IND_BSSLOST = 0x1, + HIF_EVENT_IND_BSSREGAINED = 0x2, + HIF_EVENT_IND_RCPI_RSSI = 0x3, + HIF_EVENT_IND_PS_MODE_ERROR = 0x4, + HIF_EVENT_IND_INACTIVITY = 0x5 +}; + +enum hif_ps_mode_error { + HIF_PS_ERROR_NO_ERROR = 0, + HIF_PS_ERROR_AP_NOT_RESP_TO_POLL = 1, + HIF_PS_ERROR_AP_NOT_RESP_TO_UAPSD_TRIGGER = 2, + HIF_PS_ERROR_AP_SENT_UNICAST_IN_DOZE = 3, + HIF_PS_ERROR_AP_NO_DATA_AFTER_TIM = 4 +}; + +struct hif_ind_event { + __le32 event_id; + union { + u8 rcpi_rssi; + __le32 ps_mode_error; + __le32 peer_sta_set; + } event_data; +} __packed; + +#endif diff --git a/drivers/net/wireless/silabs/wfx/hif_api_general.h b/drivers/net/wireless/silabs/wfx/hif_api_general.h new file mode 100644 index 000000000000..24188945718d --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_api_general.h @@ -0,0 +1,267 @@ +/* SPDX-License-Identifier: Apache-2.0 */ +/* + * WFx hardware interface definitions + * + * Copyright (c) 2018-2020, Silicon Laboratories Inc. + */ + +#ifndef WFX_HIF_API_GENERAL_H +#define WFX_HIF_API_GENERAL_H + +#ifdef __KERNEL__ +#include +#include +#else +#include +#include +#define __packed __attribute__((__packed__)) +#endif + +#define HIF_ID_IS_INDICATION 0x80 +#define HIF_COUNTER_MAX 7 + +struct hif_msg { + __le16 len; + u8 id; + u8 reserved:1; + u8 interface:2; + u8 seqnum:3; + u8 encrypted:2; + u8 body[]; +} __packed; + +enum hif_general_requests_ids { + HIF_REQ_ID_CONFIGURATION = 0x09, + HIF_REQ_ID_CONTROL_GPIO = 0x26, + HIF_REQ_ID_SET_SL_MAC_KEY = 0x27, + HIF_REQ_ID_SL_EXCHANGE_PUB_KEYS = 0x28, + HIF_REQ_ID_SL_CONFIGURE = 0x29, + HIF_REQ_ID_PREVENT_ROLLBACK = 0x2a, + HIF_REQ_ID_PTA_SETTINGS = 0x2b, + HIF_REQ_ID_PTA_PRIORITY = 0x2c, + HIF_REQ_ID_PTA_STATE = 0x2d, + HIF_REQ_ID_SHUT_DOWN = 0x32, +}; + +enum hif_general_confirmations_ids { + HIF_CNF_ID_CONFIGURATION = 0x09, + HIF_CNF_ID_CONTROL_GPIO = 0x26, + HIF_CNF_ID_SET_SL_MAC_KEY = 0x27, + HIF_CNF_ID_SL_EXCHANGE_PUB_KEYS = 0x28, + HIF_CNF_ID_SL_CONFIGURE = 0x29, + HIF_CNF_ID_PREVENT_ROLLBACK = 0x2a, + HIF_CNF_ID_PTA_SETTINGS = 0x2b, + HIF_CNF_ID_PTA_PRIORITY = 0x2c, + HIF_CNF_ID_PTA_STATE = 0x2d, + HIF_CNF_ID_SHUT_DOWN = 0x32, +}; + +enum hif_general_indications_ids { + HIF_IND_ID_EXCEPTION = 0xe0, + HIF_IND_ID_STARTUP = 0xe1, + HIF_IND_ID_WAKEUP = 0xe2, + HIF_IND_ID_GENERIC = 0xe3, + HIF_IND_ID_ERROR = 0xe4, + HIF_IND_ID_SL_EXCHANGE_PUB_KEYS = 0xe5 +}; + +#define HIF_STATUS_SUCCESS (cpu_to_le32(0x0000)) +#define HIF_STATUS_FAIL (cpu_to_le32(0x0001)) +#define HIF_STATUS_INVALID_PARAMETER (cpu_to_le32(0x0002)) +#define HIF_STATUS_WARNING (cpu_to_le32(0x0003)) +#define HIF_STATUS_UNKNOWN_REQUEST (cpu_to_le32(0x0004)) +#define HIF_STATUS_RX_FAIL_DECRYPT (cpu_to_le32(0x0010)) +#define HIF_STATUS_RX_FAIL_MIC (cpu_to_le32(0x0011)) +#define HIF_STATUS_RX_FAIL_NO_KEY (cpu_to_le32(0x0012)) +#define HIF_STATUS_TX_FAIL_RETRIES (cpu_to_le32(0x0013)) +#define HIF_STATUS_TX_FAIL_TIMEOUT (cpu_to_le32(0x0014)) +#define HIF_STATUS_TX_FAIL_REQUEUE (cpu_to_le32(0x0015)) +#define HIF_STATUS_REFUSED (cpu_to_le32(0x0016)) +#define HIF_STATUS_BUSY (cpu_to_le32(0x0017)) +#define HIF_STATUS_SLK_SET_KEY_SUCCESS (cpu_to_le32(0x005A)) +#define HIF_STATUS_SLK_SET_KEY_ALREADY_BURNED (cpu_to_le32(0x006B)) +#define HIF_STATUS_SLK_SET_KEY_DISALLOWED_MODE (cpu_to_le32(0x007C)) +#define HIF_STATUS_SLK_SET_KEY_UNKNOWN_MODE (cpu_to_le32(0x008D)) +#define HIF_STATUS_SLK_NEGO_SUCCESS (cpu_to_le32(0x009E)) +#define HIF_STATUS_SLK_NEGO_FAILED (cpu_to_le32(0x00AF)) +#define HIF_STATUS_ROLLBACK_SUCCESS (cpu_to_le32(0x1234)) +#define HIF_STATUS_ROLLBACK_FAIL (cpu_to_le32(0x1256)) + +enum hif_api_rate_index { + API_RATE_INDEX_B_1MBPS = 0, + API_RATE_INDEX_B_2MBPS = 1, + API_RATE_INDEX_B_5P5MBPS = 2, + API_RATE_INDEX_B_11MBPS = 3, + API_RATE_INDEX_PBCC_22MBPS = 4, + API_RATE_INDEX_PBCC_33MBPS = 5, + API_RATE_INDEX_G_6MBPS = 6, + API_RATE_INDEX_G_9MBPS = 7, + API_RATE_INDEX_G_12MBPS = 8, + API_RATE_INDEX_G_18MBPS = 9, + API_RATE_INDEX_G_24MBPS = 10, + API_RATE_INDEX_G_36MBPS = 11, + API_RATE_INDEX_G_48MBPS = 12, + API_RATE_INDEX_G_54MBPS = 13, + API_RATE_INDEX_N_6P5MBPS = 14, + API_RATE_INDEX_N_13MBPS = 15, + API_RATE_INDEX_N_19P5MBPS = 16, + API_RATE_INDEX_N_26MBPS = 17, + API_RATE_INDEX_N_39MBPS = 18, + API_RATE_INDEX_N_52MBPS = 19, + API_RATE_INDEX_N_58P5MBPS = 20, + API_RATE_INDEX_N_65MBPS = 21, + API_RATE_NUM_ENTRIES = 22 +}; + +enum hif_fw_type { + HIF_FW_TYPE_ETF = 0x0, + HIF_FW_TYPE_WFM = 0x1, + HIF_FW_TYPE_WSM = 0x2 +}; + +struct hif_ind_startup { + // As the others, this struct is interpreted as little endian by the + // device. However, this struct is also used by the driver. We prefer to + // declare it in native order and doing byte swap on reception. + __le32 status; + u16 hardware_id; + u8 opn[14]; + u8 uid[8]; + u16 num_inp_ch_bufs; + u16 size_inp_ch_buf; + u8 num_links_ap; + u8 num_interfaces; + u8 mac_addr[2][ETH_ALEN]; + u8 api_version_minor; + u8 api_version_major; + u8 link_mode:2; + u8 reserved1:6; + u8 reserved2; + u8 reserved3; + u8 reserved4; + u8 firmware_build; + u8 firmware_minor; + u8 firmware_major; + u8 firmware_type; + u8 disabled_channel_list[2]; + u8 region_sel_mode:4; + u8 reserved5:4; + u8 phy1_region:3; + u8 phy0_region:3; + u8 otp_phy_ver:2; + u32 supported_rate_mask; + u8 firmware_label[128]; +} __packed; + +struct hif_ind_wakeup { +} __packed; + +struct hif_req_configuration { + __le16 length; + u8 pds_data[]; +} __packed; + +struct hif_cnf_configuration { + __le32 status; +} __packed; + +enum hif_gpio_mode { + HIF_GPIO_MODE_D0 = 0x0, + HIF_GPIO_MODE_D1 = 0x1, + HIF_GPIO_MODE_OD0 = 0x2, + HIF_GPIO_MODE_OD1 = 0x3, + HIF_GPIO_MODE_TRISTATE = 0x4, + HIF_GPIO_MODE_TOGGLE = 0x5, + HIF_GPIO_MODE_READ = 0x6 +}; + +struct hif_req_control_gpio { + u8 gpio_label; + u8 gpio_mode; +} __packed; + +struct hif_cnf_control_gpio { + __le32 status; + __le32 value; +} __packed; + +enum hif_generic_indication_type { + HIF_GENERIC_INDICATION_TYPE_RAW = 0x0, + HIF_GENERIC_INDICATION_TYPE_STRING = 0x1, + HIF_GENERIC_INDICATION_TYPE_RX_STATS = 0x2, + HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO = 0x3, +}; + +struct hif_rx_stats { + __le32 nb_rx_frame; + __le32 nb_crc_frame; + __le32 per_total; + __le32 throughput; + __le32 nb_rx_by_rate[API_RATE_NUM_ENTRIES]; + __le16 per[API_RATE_NUM_ENTRIES]; + __le16 snr[API_RATE_NUM_ENTRIES]; // signed value + __le16 rssi[API_RATE_NUM_ENTRIES]; // signed value + __le16 cfo[API_RATE_NUM_ENTRIES]; // signed value + __le32 date; + __le32 pwr_clk_freq; + u8 is_ext_pwr_clk; + s8 current_temp; +} __packed; + +struct hif_tx_power_loop_info { + __le16 tx_gain_dig; + __le16 tx_gain_pa; + __le16 target_pout; // signed value + __le16 p_estimation; // signed value + __le16 vpdet; + u8 measurement_index; + u8 reserved; +} __packed; + +struct hif_ind_generic { + __le32 type; + union { + struct hif_rx_stats rx_stats; + struct hif_tx_power_loop_info tx_power_loop_info; + } data; +} __packed; + +enum hif_error { + HIF_ERROR_FIRMWARE_ROLLBACK = 0x00, + HIF_ERROR_FIRMWARE_DEBUG_ENABLED = 0x01, + HIF_ERROR_SLK_OUTDATED_SESSION_KEY = 0x02, + HIF_ERROR_SLK_SESSION_KEY = 0x03, + HIF_ERROR_OOR_VOLTAGE = 0x04, + HIF_ERROR_PDS_PAYLOAD = 0x05, + HIF_ERROR_OOR_TEMPERATURE = 0x06, + HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE = 0x07, + HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED = 0x08, + HIF_ERROR_SLK_OVERFLOW = 0x09, + HIF_ERROR_SLK_DECRYPTION = 0x0a, + HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE = 0x0b, + HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW = 0x0c, + HIF_ERROR_HIF_RX_DATA_TOO_LARGE = 0x0e, + HIF_ERROR_HIF_TX_QUEUE_FULL = 0x0d, + HIF_ERROR_HIF_BUS = 0x0f, + HIF_ERROR_PDS_TESTFEATURE = 0x10, + HIF_ERROR_SLK_UNCONFIGURED = 0x11, +}; + +struct hif_ind_error { + __le32 type; + u8 data[]; +} __packed; + +struct hif_ind_exception { + __le32 type; + u8 data[]; +} __packed; + +enum hif_secure_link_state { + SEC_LINK_UNAVAILABLE = 0x0, + SEC_LINK_RESERVED = 0x1, + SEC_LINK_EVAL = 0x2, + SEC_LINK_ENFORCED = 0x3 +}; + +#endif diff --git a/drivers/net/wireless/silabs/wfx/hif_api_mib.h b/drivers/net/wireless/silabs/wfx/hif_api_mib.h new file mode 100644 index 000000000000..ace924720ce6 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_api_mib.h @@ -0,0 +1,343 @@ +/* SPDX-License-Identifier: Apache-2.0 */ +/* + * WFx hardware interface definitions + * + * Copyright (c) 2018-2020, Silicon Laboratories Inc. + */ + +#ifndef WFX_HIF_API_MIB_H +#define WFX_HIF_API_MIB_H + +#include "hif_api_general.h" + +#define HIF_API_IPV4_ADDRESS_SIZE 4 +#define HIF_API_IPV6_ADDRESS_SIZE 16 + +enum hif_mib_ids { + HIF_MIB_ID_GL_OPERATIONAL_POWER_MODE = 0x2000, + HIF_MIB_ID_GL_BLOCK_ACK_INFO = 0x2001, + HIF_MIB_ID_GL_SET_MULTI_MSG = 0x2002, + HIF_MIB_ID_CCA_CONFIG = 0x2003, + HIF_MIB_ID_ETHERTYPE_DATAFRAME_CONDITION = 0x2010, + HIF_MIB_ID_PORT_DATAFRAME_CONDITION = 0x2011, + HIF_MIB_ID_MAGIC_DATAFRAME_CONDITION = 0x2012, + HIF_MIB_ID_MAC_ADDR_DATAFRAME_CONDITION = 0x2013, + HIF_MIB_ID_IPV4_ADDR_DATAFRAME_CONDITION = 0x2014, + HIF_MIB_ID_IPV6_ADDR_DATAFRAME_CONDITION = 0x2015, + HIF_MIB_ID_UC_MC_BC_DATAFRAME_CONDITION = 0x2016, + HIF_MIB_ID_CONFIG_DATA_FILTER = 0x2017, + HIF_MIB_ID_SET_DATA_FILTERING = 0x2018, + HIF_MIB_ID_ARP_IP_ADDRESSES_TABLE = 0x2019, + HIF_MIB_ID_NS_IP_ADDRESSES_TABLE = 0x201A, + HIF_MIB_ID_RX_FILTER = 0x201B, + HIF_MIB_ID_BEACON_FILTER_TABLE = 0x201C, + HIF_MIB_ID_BEACON_FILTER_ENABLE = 0x201D, + HIF_MIB_ID_GRP_SEQ_COUNTER = 0x2030, + HIF_MIB_ID_TSF_COUNTER = 0x2031, + HIF_MIB_ID_STATISTICS_TABLE = 0x2032, + HIF_MIB_ID_COUNTERS_TABLE = 0x2033, + HIF_MIB_ID_MAX_TX_POWER_LEVEL = 0x2034, + HIF_MIB_ID_EXTENDED_COUNTERS_TABLE = 0x2035, + HIF_MIB_ID_DOT11_MAC_ADDRESS = 0x2040, + HIF_MIB_ID_DOT11_MAX_TRANSMIT_MSDU_LIFETIME = 0x2041, + HIF_MIB_ID_DOT11_MAX_RECEIVE_LIFETIME = 0x2042, + HIF_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID = 0x2043, + HIF_MIB_ID_DOT11_RTS_THRESHOLD = 0x2044, + HIF_MIB_ID_SLOT_TIME = 0x2045, + HIF_MIB_ID_CURRENT_TX_POWER_LEVEL = 0x2046, + HIF_MIB_ID_NON_ERP_PROTECTION = 0x2047, + HIF_MIB_ID_TEMPLATE_FRAME = 0x2048, + HIF_MIB_ID_BEACON_WAKEUP_PERIOD = 0x2049, + HIF_MIB_ID_RCPI_RSSI_THRESHOLD = 0x204A, + HIF_MIB_ID_BLOCK_ACK_POLICY = 0x204B, + HIF_MIB_ID_OVERRIDE_INTERNAL_TX_RATE = 0x204C, + HIF_MIB_ID_SET_ASSOCIATION_MODE = 0x204D, + HIF_MIB_ID_SET_UAPSD_INFORMATION = 0x204E, + HIF_MIB_ID_SET_TX_RATE_RETRY_POLICY = 0x204F, + HIF_MIB_ID_PROTECTED_MGMT_POLICY = 0x2050, + HIF_MIB_ID_SET_HT_PROTECTION = 0x2051, + HIF_MIB_ID_KEEP_ALIVE_PERIOD = 0x2052, + HIF_MIB_ID_ARP_KEEP_ALIVE_PERIOD = 0x2053, + HIF_MIB_ID_INACTIVITY_TIMER = 0x2054, + HIF_MIB_ID_INTERFACE_PROTECTION = 0x2055, + HIF_MIB_ID_BEACON_STATS = 0x2056, +}; + +enum hif_op_power_mode { + HIF_OP_POWER_MODE_ACTIVE = 0x0, + HIF_OP_POWER_MODE_DOZE = 0x1, + HIF_OP_POWER_MODE_QUIESCENT = 0x2 +}; + +struct hif_mib_gl_operational_power_mode { + u8 power_mode:4; + u8 reserved1:3; + u8 wup_ind_activation:1; + u8 reserved2[3]; +} __packed; + +struct hif_mib_gl_set_multi_msg { + u8 enable_multi_tx_conf:1; + u8 reserved1:7; + u8 reserved2[3]; +} __packed; + +enum hif_arp_ns_frame_treatment { + HIF_ARP_NS_FILTERING_DISABLE = 0x0, + HIF_ARP_NS_FILTERING_ENABLE = 0x1, + HIF_ARP_NS_REPLY_ENABLE = 0x2 +}; + +struct hif_mib_arp_ip_addr_table { + u8 condition_idx; + u8 arp_enable; + u8 reserved[2]; + u8 ipv4_address[HIF_API_IPV4_ADDRESS_SIZE]; +} __packed; + +struct hif_mib_rx_filter { + u8 reserved1:1; + u8 bssid_filter:1; + u8 reserved2:1; + u8 fwd_probe_req:1; + u8 keep_alive_filter:1; + u8 reserved3:3; + u8 reserved4[3]; +} __packed; + +struct hif_ie_table_entry { + u8 ie_id; + u8 has_changed:1; + u8 no_longer:1; + u8 has_appeared:1; + u8 reserved:1; + u8 num_match_data:4; + u8 oui[3]; + u8 match_data[3]; +} __packed; + +struct hif_mib_bcn_filter_table { + __le32 num_of_info_elmts; + struct hif_ie_table_entry ie_table[]; +} __packed; + +enum hif_beacon_filter { + HIF_BEACON_FILTER_DISABLE = 0x0, + HIF_BEACON_FILTER_ENABLE = 0x1, + HIF_BEACON_FILTER_AUTO_ERP = 0x2 +}; + +struct hif_mib_bcn_filter_enable { + __le32 enable; + __le32 bcn_count; +} __packed; + +struct hif_mib_extended_count_table { + __le32 count_plcp_errors; + __le32 count_fcs_errors; + __le32 count_tx_packets; + __le32 count_rx_packets; + __le32 count_rx_packet_errors; + __le32 count_rx_decryption_failures; + __le32 count_rx_mic_failures; + __le32 count_rx_no_key_failures; + __le32 count_tx_multicast_frames; + __le32 count_tx_frames_success; + __le32 count_tx_frame_failures; + __le32 count_tx_frames_retried; + __le32 count_tx_frames_multi_retried; + __le32 count_rx_frame_duplicates; + __le32 count_rts_success; + __le32 count_rts_failures; + __le32 count_ack_failures; + __le32 count_rx_multicast_frames; + __le32 count_rx_frames_success; + __le32 count_rx_cmacicv_errors; + __le32 count_rx_cmac_replays; + __le32 count_rx_mgmt_ccmp_replays; + __le32 count_rx_bipmic_errors; + __le32 count_rx_beacon; + __le32 count_miss_beacon; + __le32 reserved[15]; +} __packed; + +struct hif_mib_count_table { + __le32 count_plcp_errors; + __le32 count_fcs_errors; + __le32 count_tx_packets; + __le32 count_rx_packets; + __le32 count_rx_packet_errors; + __le32 count_rx_decryption_failures; + __le32 count_rx_mic_failures; + __le32 count_rx_no_key_failures; + __le32 count_tx_multicast_frames; + __le32 count_tx_frames_success; + __le32 count_tx_frame_failures; + __le32 count_tx_frames_retried; + __le32 count_tx_frames_multi_retried; + __le32 count_rx_frame_duplicates; + __le32 count_rts_success; + __le32 count_rts_failures; + __le32 count_ack_failures; + __le32 count_rx_multicast_frames; + __le32 count_rx_frames_success; + __le32 count_rx_cmacicv_errors; + __le32 count_rx_cmac_replays; + __le32 count_rx_mgmt_ccmp_replays; + __le32 count_rx_bipmic_errors; +} __packed; + +struct hif_mib_mac_address { + u8 mac_addr[ETH_ALEN]; + __le16 reserved; +} __packed; + +struct hif_mib_wep_default_key_id { + u8 wep_default_key_id; + u8 reserved[3]; +} __packed; + +struct hif_mib_dot11_rts_threshold { + __le32 threshold; +} __packed; + +struct hif_mib_slot_time { + __le32 slot_time; +} __packed; + +struct hif_mib_current_tx_power_level { + __le32 power_level; // signed value +} __packed; + +struct hif_mib_non_erp_protection { + u8 use_cts_to_self:1; + u8 reserved1:7; + u8 reserved2[3]; +} __packed; + +enum hif_tmplt { + HIF_TMPLT_PRBREQ = 0x0, + HIF_TMPLT_BCN = 0x1, + HIF_TMPLT_NULL = 0x2, + HIF_TMPLT_QOSNUL = 0x3, + HIF_TMPLT_PSPOLL = 0x4, + HIF_TMPLT_PRBRES = 0x5, + HIF_TMPLT_ARP = 0x6, + HIF_TMPLT_NA = 0x7 +}; + +#define HIF_API_MAX_TEMPLATE_FRAME_SIZE 700 + +struct hif_mib_template_frame { + u8 frame_type; + u8 init_rate:7; + u8 mode:1; + __le16 frame_length; + u8 frame[]; +} __packed; + +struct hif_mib_beacon_wake_up_period { + u8 wakeup_period_min; + u8 receive_dtim:1; + u8 reserved1:7; + u8 wakeup_period_max; + u8 reserved2; +} __packed; + +struct hif_mib_rcpi_rssi_threshold { + u8 detection:1; + u8 rcpi_rssi:1; + u8 upperthresh:1; + u8 lowerthresh:1; + u8 reserved:4; + u8 lower_threshold; + u8 upper_threshold; + u8 rolling_average_count; +} __packed; + +#define DEFAULT_BA_MAX_RX_BUFFER_SIZE 16 + +struct hif_mib_block_ack_policy { + u8 block_ack_tx_tid_policy; + u8 reserved1; + u8 block_ack_rx_tid_policy; + u8 block_ack_rx_max_buffer_size; +} __packed; + +enum hif_mpdu_start_spacing { + HIF_MPDU_START_SPACING_NO_RESTRIC = 0x0, + HIF_MPDU_START_SPACING_QUARTER = 0x1, + HIF_MPDU_START_SPACING_HALF = 0x2, + HIF_MPDU_START_SPACING_ONE = 0x3, + HIF_MPDU_START_SPACING_TWO = 0x4, + HIF_MPDU_START_SPACING_FOUR = 0x5, + HIF_MPDU_START_SPACING_EIGHT = 0x6, + HIF_MPDU_START_SPACING_SIXTEEN = 0x7 +}; + +struct hif_mib_set_association_mode { + u8 preambtype_use:1; + u8 mode:1; + u8 rateset:1; + u8 spacing:1; + u8 reserved1:4; + u8 short_preamble:1; + u8 reserved2:7; + u8 greenfield:1; + u8 reserved3:7; + u8 mpdu_start_spacing; + __le32 basic_rate_set; +} __packed; + +struct hif_mib_set_uapsd_information { + u8 trig_bckgrnd:1; + u8 trig_be:1; + u8 trig_video:1; + u8 trig_voice:1; + u8 reserved1:4; + u8 deliv_bckgrnd:1; + u8 deliv_be:1; + u8 deliv_video:1; + u8 deliv_voice:1; + u8 reserved2:4; + __le16 min_auto_trigger_interval; + __le16 max_auto_trigger_interval; + __le16 auto_trigger_step; +} __packed; + +struct hif_tx_rate_retry_policy { + u8 policy_index; + u8 short_retry_count; + u8 long_retry_count; + u8 first_rate_sel:2; + u8 terminate:1; + u8 count_init:1; + u8 reserved1:4; + u8 rate_recovery_count; + u8 reserved2[3]; + u8 rates[12]; +} __packed; + +#define HIF_TX_RETRY_POLICY_MAX 15 +#define HIF_TX_RETRY_POLICY_INVALID HIF_TX_RETRY_POLICY_MAX + +struct hif_mib_set_tx_rate_retry_policy { + u8 num_tx_rate_policies; + u8 reserved[3]; + struct hif_tx_rate_retry_policy tx_rate_retry_policy[]; +} __packed; + +struct hif_mib_protected_mgmt_policy { + u8 pmf_enable:1; + u8 unpmf_allowed:1; + u8 host_enc_auth_frames:1; + u8 reserved1:5; + u8 reserved2[3]; +} __packed; + +struct hif_mib_keep_alive_period { + __le16 keep_alive_period; + u8 reserved[2]; +} __packed; + +#endif From patchwork Tue Oct 20 12:58:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846811 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 84799157C for ; Tue, 20 Oct 2020 13:01:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C74F224B8 for ; Tue, 20 Oct 2020 13:01:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="UtD+YwGA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406961AbgJTM7h (ORCPT ); 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Tue, 20 Oct 2020 12:59:12 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . 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+ init_completion(&hif_cmd->done); + mutex_init(&hif_cmd->lock); +} + +static void wfx_fill_header(struct hif_msg *hif, int if_id, + unsigned int cmd, size_t size) +{ + if (if_id == -1) + if_id = 2; + + WARN(cmd > 0x3f, "invalid WSM command %#.2x", cmd); + WARN(size > 0xFFF, "requested buffer is too large: %zu bytes", size); + WARN(if_id > 0x3, "invalid interface ID %d", if_id); + + hif->len = cpu_to_le16(size + 4); + hif->id = cmd; + hif->interface = if_id; +} + +static void *wfx_alloc_hif(size_t body_len, struct hif_msg **hif) +{ + *hif = kzalloc(sizeof(struct hif_msg) + body_len, GFP_KERNEL); + if (*hif) + return (*hif)->body; + else + return NULL; +} + +int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request, + void *reply, size_t reply_len, bool no_reply) +{ + const char *mib_name = ""; + const char *mib_sep = ""; + int cmd = request->id; + int vif = request->interface; + int ret; + + // Do not wait for any reply if chip is frozen + if (wdev->chip_frozen) + return -ETIMEDOUT; + + mutex_lock(&wdev->hif_cmd.lock); + WARN(wdev->hif_cmd.buf_send, "data locking error"); + + // Note: call to complete() below has an implicit memory barrier that + // hopefully protect buf_send + wdev->hif_cmd.buf_send = request; + wdev->hif_cmd.buf_recv = reply; + wdev->hif_cmd.len_recv = reply_len; + complete(&wdev->hif_cmd.ready); + + wfx_bh_request_tx(wdev); + + if (no_reply) { + // Chip won't reply. Give enough time to the wq to send the + // buffer. + msleep(100); + wdev->hif_cmd.buf_send = NULL; + mutex_unlock(&wdev->hif_cmd.lock); + return 0; + } + + if (wdev->poll_irq) + wfx_bh_poll_irq(wdev); + + ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 1 * HZ); + if (!ret) { + dev_err(wdev->dev, "chip is abnormally long to answer\n"); + reinit_completion(&wdev->hif_cmd.ready); + ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 3 * HZ); + } + if (!ret) { + dev_err(wdev->dev, "chip did not answer\n"); + wfx_pending_dump_old_frames(wdev, 3000); + wdev->chip_frozen = true; + reinit_completion(&wdev->hif_cmd.done); + ret = -ETIMEDOUT; + } else { + ret = wdev->hif_cmd.ret; + } + + wdev->hif_cmd.buf_send = NULL; + mutex_unlock(&wdev->hif_cmd.lock); + + if (ret && + (cmd == HIF_REQ_ID_READ_MIB || cmd == HIF_REQ_ID_WRITE_MIB)) { + mib_name = get_mib_name(((u16 *)request)[2]); + mib_sep = "/"; + } + if (ret < 0) + dev_err(wdev->dev, + "WSM request %s%s%s (%#.2x) on vif %d returned error %d\n", + get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret); + if (ret > 0) + dev_warn(wdev->dev, + "WSM request %s%s%s (%#.2x) on vif %d returned status %d\n", + get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret); + + return ret; +} + +// This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any +// request anymore. Obviously, only call this function during device unregister. +int hif_shutdown(struct wfx_dev *wdev) +{ + int ret; + struct hif_msg *hif; + + wfx_alloc_hif(0, &hif); + if (!hif) + return -ENOMEM; + wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0); + ret = wfx_cmd_send(wdev, hif, NULL, 0, true); + if (wdev->pdata.gpio_wakeup) + gpiod_set_value(wdev->pdata.gpio_wakeup, 0); + else + control_reg_write(wdev, 0); + kfree(hif); + return ret; +} + +int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len) +{ + int ret; + size_t buf_len = sizeof(struct hif_req_configuration) + len; + struct hif_msg *hif; + struct hif_req_configuration *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->length = cpu_to_le16(len); + memcpy(body->pds_data, conf, len); + wfx_fill_header(hif, -1, HIF_REQ_ID_CONFIGURATION, buf_len); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_reset(struct wfx_vif *wvif, bool reset_stat) +{ + int ret; + struct hif_msg *hif; + struct hif_req_reset *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->reset_stat = reset_stat; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_RESET, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, + void *val, size_t val_len) +{ + int ret; + struct hif_msg *hif; + int buf_len = sizeof(struct hif_cnf_read_mib) + val_len; + struct hif_req_read_mib *body = wfx_alloc_hif(sizeof(*body), &hif); + struct hif_cnf_read_mib *reply = kmalloc(buf_len, GFP_KERNEL); + + if (!body || !reply) { + ret = -ENOMEM; + goto out; + } + body->mib_id = cpu_to_le16(mib_id); + wfx_fill_header(hif, vif_id, HIF_REQ_ID_READ_MIB, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, reply, buf_len, false); + + if (!ret && mib_id != le16_to_cpu(reply->mib_id)) { + dev_warn(wdev->dev, "%s: confirmation mismatch request\n", + __func__); + ret = -EIO; + } + if (ret == -ENOMEM) + dev_err(wdev->dev, "buffer is too small to receive %s (%zu < %d)\n", + get_mib_name(mib_id), val_len, + le16_to_cpu(reply->length)); + if (!ret) + memcpy(val, &reply->mib_data, le16_to_cpu(reply->length)); + else + memset(val, 0xFF, val_len); +out: + kfree(hif); + kfree(reply); + return ret; +} + +int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, + void *val, size_t val_len) +{ + int ret; + struct hif_msg *hif; + int buf_len = sizeof(struct hif_req_write_mib) + val_len; + struct hif_req_write_mib *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->mib_id = cpu_to_le16(mib_id); + body->length = cpu_to_le16(val_len); + memcpy(&body->mib_data, val, val_len); + wfx_fill_header(hif, vif_id, HIF_REQ_ID_WRITE_MIB, buf_len); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req, + int chan_start_idx, int chan_num, int *timeout) +{ + int ret, i; + struct hif_msg *hif; + size_t buf_len = + sizeof(struct hif_req_start_scan_alt) + chan_num * sizeof(u8); + struct hif_req_start_scan_alt *body = wfx_alloc_hif(buf_len, &hif); + int tmo_chan_fg, tmo_chan_bg, tmo; + + WARN(chan_num > HIF_API_MAX_NB_CHANNELS, "invalid params"); + WARN(req->n_ssids > HIF_API_MAX_NB_SSIDS, "invalid params"); + + if (!hif) + return -ENOMEM; + for (i = 0; i < req->n_ssids; i++) { + memcpy(body->ssid_def[i].ssid, req->ssids[i].ssid, + IEEE80211_MAX_SSID_LEN); + body->ssid_def[i].ssid_length = + cpu_to_le32(req->ssids[i].ssid_len); + } + body->num_of_ssids = HIF_API_MAX_NB_SSIDS; + body->maintain_current_bss = 1; + body->disallow_ps = 1; + body->tx_power_level = + cpu_to_le32(req->channels[chan_start_idx]->max_power); + body->num_of_channels = chan_num; + for (i = 0; i < chan_num; i++) + body->channel_list[i] = + req->channels[i + chan_start_idx]->hw_value; + if (req->no_cck) + body->max_transmit_rate = API_RATE_INDEX_G_6MBPS; + else + body->max_transmit_rate = API_RATE_INDEX_B_1MBPS; + if (req->channels[chan_start_idx]->flags & IEEE80211_CHAN_NO_IR) { + body->min_channel_time = cpu_to_le32(50); + body->max_channel_time = cpu_to_le32(150); + } else { + body->min_channel_time = cpu_to_le32(10); + body->max_channel_time = cpu_to_le32(50); + body->num_of_probe_requests = 2; + body->probe_delay = 100; + } + tmo_chan_bg = le32_to_cpu(body->max_channel_time) * USEC_PER_TU; + tmo_chan_fg = 512 * USEC_PER_TU + body->probe_delay; + tmo_chan_fg *= body->num_of_probe_requests; + tmo = chan_num * max(tmo_chan_bg, tmo_chan_fg) + 512 * USEC_PER_TU; + if (timeout) + *timeout = usecs_to_jiffies(tmo); + + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START_SCAN, buf_len); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_stop_scan(struct wfx_vif *wvif) +{ + int ret; + struct hif_msg *hif; + // body associated to HIF_REQ_ID_STOP_SCAN is empty + wfx_alloc_hif(0, &hif); + + if (!hif) + return -ENOMEM; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_STOP_SCAN, 0); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + struct ieee80211_channel *channel, const u8 *ssid, int ssidlen) +{ + int ret; + struct hif_msg *hif; + struct hif_req_join *body = wfx_alloc_hif(sizeof(*body), &hif); + + WARN_ON(!conf->beacon_int); + WARN_ON(!conf->basic_rates); + WARN_ON(sizeof(body->ssid) < ssidlen); + WARN(!conf->ibss_joined && !ssidlen, "joining an unknown BSS"); + if (WARN_ON(!channel)) + return -EINVAL; + if (!hif) + return -ENOMEM; + body->infrastructure_bss_mode = !conf->ibss_joined; + body->short_preamble = conf->use_short_preamble; + if (channel->flags & IEEE80211_CHAN_NO_IR) + body->probe_for_join = 0; + else + body->probe_for_join = 1; + body->channel_number = channel->hw_value; + body->beacon_interval = cpu_to_le32(conf->beacon_int); + body->basic_rate_set = + cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates)); + memcpy(body->bssid, conf->bssid, sizeof(body->bssid)); + if (ssid) { + body->ssid_length = cpu_to_le32(ssidlen); + memcpy(body->ssid, ssid, ssidlen); + } + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_JOIN, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count) +{ + int ret; + struct hif_msg *hif; + struct hif_req_set_bss_params *body = + wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->aid = cpu_to_le16(aid); + body->beacon_lost_count = beacon_lost_count; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_BSS_PARAMS, + sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg) +{ + int ret; + struct hif_msg *hif; + // FIXME: only send necessary bits + struct hif_req_add_key *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + // FIXME: swap bytes as necessary in body + memcpy(body, arg, sizeof(*body)); + if (wfx_api_older_than(wdev, 1, 5)) + // Legacy firmwares expect that add_key to be sent on right + // interface. + wfx_fill_header(hif, arg->int_id, HIF_REQ_ID_ADD_KEY, + sizeof(*body)); + else + wfx_fill_header(hif, -1, HIF_REQ_ID_ADD_KEY, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_remove_key(struct wfx_dev *wdev, int idx) +{ + int ret; + struct hif_msg *hif; + struct hif_req_remove_key *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->entry_index = idx; + wfx_fill_header(hif, -1, HIF_REQ_ID_REMOVE_KEY, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue, + const struct ieee80211_tx_queue_params *arg) +{ + int ret; + struct hif_msg *hif; + struct hif_req_edca_queue_params *body = wfx_alloc_hif(sizeof(*body), + &hif); + + if (!body) + return -ENOMEM; + + WARN_ON(arg->aifs > 255); + if (!hif) + return -ENOMEM; + body->aifsn = arg->aifs; + body->cw_min = cpu_to_le16(arg->cw_min); + body->cw_max = cpu_to_le16(arg->cw_max); + body->tx_op_limit = cpu_to_le16(arg->txop * USEC_PER_TXOP); + body->queue_id = 3 - queue; + // API 2.0 has changed queue IDs values + if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BE) + body->queue_id = HIF_QUEUE_ID_BACKGROUND; + if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BK) + body->queue_id = HIF_QUEUE_ID_BESTEFFORT; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_EDCA_QUEUE_PARAMS, + sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout) +{ + int ret; + struct hif_msg *hif; + struct hif_req_set_pm_mode *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!body) + return -ENOMEM; + + if (!hif) + return -ENOMEM; + if (ps) { + body->enter_psm = 1; + // Firmware does not support more than 128ms + body->fast_psm_idle_period = min(dynamic_ps_timeout * 2, 255); + if (body->fast_psm_idle_period) + body->fast_psm = 1; + } + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_PM_MODE, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + const struct ieee80211_channel *channel) +{ + int ret; + struct hif_msg *hif; + struct hif_req_start *body = wfx_alloc_hif(sizeof(*body), &hif); + + WARN_ON(!conf->beacon_int); + if (!hif) + return -ENOMEM; + body->dtim_period = conf->dtim_period; + body->short_preamble = conf->use_short_preamble; + body->channel_number = channel->hw_value; + body->beacon_interval = cpu_to_le32(conf->beacon_int); + body->basic_rate_set = + cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates)); + body->ssid_length = conf->ssid_len; + memcpy(body->ssid, conf->ssid, conf->ssid_len); + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_beacon_transmit(struct wfx_vif *wvif, bool enable) +{ + int ret; + struct hif_msg *hif; + struct hif_req_beacon_transmit *body = wfx_alloc_hif(sizeof(*body), + &hif); + + if (!hif) + return -ENOMEM; + body->enable_beaconing = enable ? 1 : 0; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_BEACON_TRANSMIT, + sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_map_link(struct wfx_vif *wvif, bool unmap, u8 *mac_addr, int sta_id, bool mfp) +{ + int ret; + struct hif_msg *hif; + struct hif_req_map_link *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + if (mac_addr) + ether_addr_copy(body->mac_addr, mac_addr); + body->mfpc = mfp ? 1 : 0; + body->unmap = unmap ? 1 : 0; + body->peer_sta_id = sta_id; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_MAP_LINK, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len) +{ + int ret; + struct hif_msg *hif; + int buf_len = sizeof(struct hif_req_update_ie) + ies_len; + struct hif_req_update_ie *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->beacon = 1; + body->num_ies = cpu_to_le16(1); + memcpy(body->ie, ies, ies_len); + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_UPDATE_IE, buf_len); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} diff --git a/drivers/net/wireless/silabs/wfx/hif_tx.h b/drivers/net/wireless/silabs/wfx/hif_tx.h new file mode 100644 index 000000000000..3521c545ae6b --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_tx.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Implementation of host-to-chip commands (aka request/confirmation) of WFxxx + * Split Mac (WSM) API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (C) 2010, ST-Ericsson SA + */ +#ifndef WFX_HIF_TX_H +#define WFX_HIF_TX_H + +struct ieee80211_channel; +struct ieee80211_bss_conf; +struct ieee80211_tx_queue_params; +struct cfg80211_scan_request; +struct hif_req_add_key; +struct wfx_dev; +struct wfx_vif; + +struct wfx_hif_cmd { + struct mutex lock; + struct completion ready; + struct completion done; + struct hif_msg *buf_send; + void *buf_recv; + size_t len_recv; + int ret; +}; + +void wfx_init_hif_cmd(struct wfx_hif_cmd *wfx_hif_cmd); +int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request, + void *reply, size_t reply_len, bool async); + +int hif_shutdown(struct wfx_dev *wdev); +int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len); +int hif_reset(struct wfx_vif *wvif, bool reset_stat); +int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, + void *buf, size_t buf_size); +int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, + void *buf, size_t buf_size); +int hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req80211, + int chan_start, int chan_num, int *timeout); +int hif_stop_scan(struct wfx_vif *wvif); +int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + struct ieee80211_channel *channel, const u8 *ssid, int ssidlen); +int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout); +int hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count); +int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg); +int hif_remove_key(struct wfx_dev *wdev, int idx); +int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue, + const struct ieee80211_tx_queue_params *arg); +int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + const struct ieee80211_channel *channel); +int hif_beacon_transmit(struct wfx_vif *wvif, bool enable); +int hif_map_link(struct wfx_vif *wvif, + bool unmap, u8 *mac_addr, int sta_id, bool mfp); +int hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len); + +#endif diff --git a/drivers/net/wireless/silabs/wfx/hif_tx_mib.c b/drivers/net/wireless/silabs/wfx/hif_tx_mib.c new file mode 100644 index 000000000000..1926cf1b62be --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_tx_mib.c @@ -0,0 +1,324 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Implementation of host-to-chip MIBs of WFxxx Split Mac (WSM) API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (C) 2010, ST-Ericsson SA + */ + +#include + +#include "wfx.h" +#include "hif_tx.h" +#include "hif_tx_mib.h" +#include "hif_api_mib.h" + +int hif_set_output_power(struct wfx_vif *wvif, int val) +{ + struct hif_mib_current_tx_power_level arg = { + .power_level = cpu_to_le32(val * 10), + }; + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_CURRENT_TX_POWER_LEVEL, + &arg, sizeof(arg)); +} + +int hif_set_beacon_wakeup_period(struct wfx_vif *wvif, + unsigned int dtim_interval, + unsigned int listen_interval) +{ + struct hif_mib_beacon_wake_up_period arg = { + .wakeup_period_min = dtim_interval, + .receive_dtim = 0, + .wakeup_period_max = listen_interval, + }; + + if (dtim_interval > 0xFF || listen_interval > 0xFFFF) + return -EINVAL; + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_BEACON_WAKEUP_PERIOD, + &arg, sizeof(arg)); +} + +int hif_set_rcpi_rssi_threshold(struct wfx_vif *wvif, + int rssi_thold, int rssi_hyst) +{ + struct hif_mib_rcpi_rssi_threshold arg = { + .rolling_average_count = 8, + .detection = 1, + }; + + if (!rssi_thold && !rssi_hyst) { + arg.upperthresh = 1; + arg.lowerthresh = 1; + } else { + arg.upper_threshold = rssi_thold + rssi_hyst; + arg.upper_threshold = (arg.upper_threshold + 110) * 2; + arg.lower_threshold = rssi_thold; + arg.lower_threshold = (arg.lower_threshold + 110) * 2; + } + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_RCPI_RSSI_THRESHOLD, &arg, sizeof(arg)); +} + +int hif_get_counters_table(struct wfx_dev *wdev, int vif_id, + struct hif_mib_extended_count_table *arg) +{ + if (wfx_api_older_than(wdev, 1, 3)) { + // extended_count_table is wider than count_table + memset(arg, 0xFF, sizeof(*arg)); + return hif_read_mib(wdev, vif_id, HIF_MIB_ID_COUNTERS_TABLE, + arg, sizeof(struct hif_mib_count_table)); + } else { + return hif_read_mib(wdev, vif_id, + HIF_MIB_ID_EXTENDED_COUNTERS_TABLE, arg, + sizeof(struct hif_mib_extended_count_table)); + } +} + +int hif_set_macaddr(struct wfx_vif *wvif, u8 *mac) +{ + struct hif_mib_mac_address msg = { }; + + if (mac) + ether_addr_copy(msg.mac_addr, mac); + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_DOT11_MAC_ADDRESS, + &msg, sizeof(msg)); +} + +int hif_set_rx_filter(struct wfx_vif *wvif, + bool filter_bssid, bool filter_prbreq) +{ + struct hif_mib_rx_filter arg = { }; + + if (filter_bssid) + arg.bssid_filter = 1; + if (!filter_prbreq) + arg.fwd_probe_req = 1; + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_RX_FILTER, + &arg, sizeof(arg)); +} + +int hif_set_beacon_filter_table(struct wfx_vif *wvif, int tbl_len, + const struct hif_ie_table_entry *tbl) +{ + int ret; + struct hif_mib_bcn_filter_table *arg; + int buf_len = struct_size(arg, ie_table, tbl_len); + + arg = kzalloc(buf_len, GFP_KERNEL); + if (!arg) + return -ENOMEM; + arg->num_of_info_elmts = cpu_to_le32(tbl_len); + memcpy(arg->ie_table, tbl, flex_array_size(arg, ie_table, tbl_len)); + ret = hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_BEACON_FILTER_TABLE, arg, buf_len); + kfree(arg); + return ret; +} + +int hif_beacon_filter_control(struct wfx_vif *wvif, + int enable, int beacon_count) +{ + struct hif_mib_bcn_filter_enable arg = { + .enable = cpu_to_le32(enable), + .bcn_count = cpu_to_le32(beacon_count), + }; + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_BEACON_FILTER_ENABLE, + &arg, sizeof(arg)); +} + +int hif_set_operational_mode(struct wfx_dev *wdev, enum hif_op_power_mode mode) +{ + struct hif_mib_gl_operational_power_mode arg = { + .power_mode = mode, + .wup_ind_activation = 1, + }; + + return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_OPERATIONAL_POWER_MODE, + &arg, sizeof(arg)); +} + +int hif_set_template_frame(struct wfx_vif *wvif, struct sk_buff *skb, + u8 frame_type, int init_rate) +{ + struct hif_mib_template_frame *arg; + + WARN(skb->len > HIF_API_MAX_TEMPLATE_FRAME_SIZE, "frame is too big"); + skb_push(skb, 4); + arg = (struct hif_mib_template_frame *)skb->data; + skb_pull(skb, 4); + arg->init_rate = init_rate; + arg->frame_type = frame_type; + arg->frame_length = cpu_to_le16(skb->len); + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_TEMPLATE_FRAME, + arg, sizeof(*arg) + skb->len); +} + +int hif_set_mfp(struct wfx_vif *wvif, bool capable, bool required) +{ + struct hif_mib_protected_mgmt_policy arg = { }; + + WARN(required && !capable, "incoherent arguments"); + if (capable) { + arg.pmf_enable = 1; + arg.host_enc_auth_frames = 1; + } + if (!required) + arg.unpmf_allowed = 1; + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_PROTECTED_MGMT_POLICY, + &arg, sizeof(arg)); +} + +int hif_set_block_ack_policy(struct wfx_vif *wvif, + u8 tx_tid_policy, u8 rx_tid_policy) +{ + struct hif_mib_block_ack_policy arg = { + .block_ack_tx_tid_policy = tx_tid_policy, + .block_ack_rx_tid_policy = rx_tid_policy, + }; + + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_BLOCK_ACK_POLICY, + &arg, sizeof(arg)); +} + +int hif_set_association_mode(struct wfx_vif *wvif, int ampdu_density, + bool greenfield, bool short_preamble) +{ + struct hif_mib_set_association_mode arg = { + .preambtype_use = 1, + .mode = 1, + .spacing = 1, + .short_preamble = short_preamble, + .greenfield = greenfield, + .mpdu_start_spacing = ampdu_density, + }; + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_SET_ASSOCIATION_MODE, &arg, sizeof(arg)); +} + +int hif_set_tx_rate_retry_policy(struct wfx_vif *wvif, + int policy_index, u8 *rates) +{ + struct hif_mib_set_tx_rate_retry_policy *arg; + size_t size = struct_size(arg, tx_rate_retry_policy, 1); + int ret; + + arg = kzalloc(size, GFP_KERNEL); + if (!arg) + return -ENOMEM; + arg->num_tx_rate_policies = 1; + arg->tx_rate_retry_policy[0].policy_index = policy_index; + arg->tx_rate_retry_policy[0].short_retry_count = 255; + arg->tx_rate_retry_policy[0].long_retry_count = 255; + arg->tx_rate_retry_policy[0].first_rate_sel = 1; + arg->tx_rate_retry_policy[0].terminate = 1; + arg->tx_rate_retry_policy[0].count_init = 1; + memcpy(&arg->tx_rate_retry_policy[0].rates, rates, + sizeof(arg->tx_rate_retry_policy[0].rates)); + ret = hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_SET_TX_RATE_RETRY_POLICY, arg, size); + kfree(arg); + return ret; +} + +int hif_keep_alive_period(struct wfx_vif *wvif, int period) +{ + struct hif_mib_keep_alive_period arg = { + .keep_alive_period = cpu_to_le16(period), + }; + + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_KEEP_ALIVE_PERIOD, + &arg, sizeof(arg)); +}; + +int hif_set_arp_ipv4_filter(struct wfx_vif *wvif, int idx, __be32 *addr) +{ + struct hif_mib_arp_ip_addr_table arg = { + .condition_idx = idx, + .arp_enable = HIF_ARP_NS_FILTERING_DISABLE, + }; + + if (addr) { + // Caution: type of addr is __be32 + memcpy(arg.ipv4_address, addr, sizeof(arg.ipv4_address)); + arg.arp_enable = HIF_ARP_NS_FILTERING_ENABLE; + } + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_ARP_IP_ADDRESSES_TABLE, + &arg, sizeof(arg)); +} + +int hif_use_multi_tx_conf(struct wfx_dev *wdev, bool enable) +{ + struct hif_mib_gl_set_multi_msg arg = { + .enable_multi_tx_conf = enable, + }; + + return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_SET_MULTI_MSG, + &arg, sizeof(arg)); +} + +int hif_set_uapsd_info(struct wfx_vif *wvif, unsigned long val) +{ + struct hif_mib_set_uapsd_information arg = { }; + + if (val & BIT(IEEE80211_AC_VO)) + arg.trig_voice = 1; + if (val & BIT(IEEE80211_AC_VI)) + arg.trig_video = 1; + if (val & BIT(IEEE80211_AC_BE)) + arg.trig_be = 1; + if (val & BIT(IEEE80211_AC_BK)) + arg.trig_bckgrnd = 1; + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_SET_UAPSD_INFORMATION, + &arg, sizeof(arg)); +} + +int hif_erp_use_protection(struct wfx_vif *wvif, bool enable) +{ + struct hif_mib_non_erp_protection arg = { + .use_cts_to_self = enable, + }; + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_NON_ERP_PROTECTION, &arg, sizeof(arg)); +} + +int hif_slot_time(struct wfx_vif *wvif, int val) +{ + struct hif_mib_slot_time arg = { + .slot_time = cpu_to_le32(val), + }; + + return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_SLOT_TIME, + &arg, sizeof(arg)); +} + +int hif_wep_default_key_id(struct wfx_vif *wvif, int val) +{ + struct hif_mib_wep_default_key_id arg = { + .wep_default_key_id = val, + }; + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID, + &arg, sizeof(arg)); +} + +int hif_rts_threshold(struct wfx_vif *wvif, int val) +{ + struct hif_mib_dot11_rts_threshold arg = { + .threshold = cpu_to_le32(val >= 0 ? val : 0xFFFF), + }; + + return hif_write_mib(wvif->wdev, wvif->id, + HIF_MIB_ID_DOT11_RTS_THRESHOLD, &arg, sizeof(arg)); +} diff --git a/drivers/net/wireless/silabs/wfx/hif_tx_mib.h b/drivers/net/wireless/silabs/wfx/hif_tx_mib.h new file mode 100644 index 000000000000..812b3ba0f00e --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_tx_mib.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Implementation of host-to-chip MIBs of WFxxx Split Mac (WSM) API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (C) 2010, ST-Ericsson SA + */ +#ifndef WFX_HIF_TX_MIB_H +#define WFX_HIF_TX_MIB_H + +struct wfx_vif; +struct sk_buff; + +int hif_set_output_power(struct wfx_vif *wvif, int val); +int hif_set_beacon_wakeup_period(struct wfx_vif *wvif, + unsigned int dtim_interval, + unsigned int listen_interval); +int hif_set_rcpi_rssi_threshold(struct wfx_vif *wvif, + int rssi_thold, int rssi_hyst); +int hif_get_counters_table(struct wfx_dev *wdev, int vif_id, + struct hif_mib_extended_count_table *arg); +int hif_set_macaddr(struct wfx_vif *wvif, u8 *mac); +int hif_set_rx_filter(struct wfx_vif *wvif, + bool filter_bssid, bool fwd_probe_req); +int hif_set_beacon_filter_table(struct wfx_vif *wvif, int tbl_len, + const struct hif_ie_table_entry *tbl); +int hif_beacon_filter_control(struct wfx_vif *wvif, + int enable, int beacon_count); +int hif_set_operational_mode(struct wfx_dev *wdev, enum hif_op_power_mode mode); +int hif_set_template_frame(struct wfx_vif *wvif, struct sk_buff *skb, + u8 frame_type, int init_rate); +int hif_set_mfp(struct wfx_vif *wvif, bool capable, bool required); +int hif_set_block_ack_policy(struct wfx_vif *wvif, + u8 tx_tid_policy, u8 rx_tid_policy); +int hif_set_association_mode(struct wfx_vif *wvif, int ampdu_density, + bool greenfield, bool short_preamble); +int hif_set_tx_rate_retry_policy(struct wfx_vif *wvif, + int policy_index, u8 *rates); +int hif_keep_alive_period(struct wfx_vif *wvif, int period); +int hif_set_arp_ipv4_filter(struct wfx_vif *wvif, int idx, __be32 *addr); +int hif_use_multi_tx_conf(struct wfx_dev *wdev, bool enable); +int hif_set_uapsd_info(struct wfx_vif *wvif, unsigned long val); +int hif_erp_use_protection(struct wfx_vif *wvif, bool enable); +int hif_slot_time(struct wfx_vif *wvif, int val); +int hif_wep_default_key_id(struct wfx_vif *wvif, int val); +int hif_rts_threshold(struct wfx_vif *wvif, int val); + +#endif From patchwork Tue Oct 20 12:58:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846767 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AAAEB16BC for ; 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+ + idx = ffs(~wdev->key_map) - 1; + if (idx < 0 || idx >= MAX_KEY_ENTRIES) + return -1; + + wdev->key_map |= BIT(idx); + return idx; +} + +static void wfx_free_key(struct wfx_dev *wdev, int idx) +{ + WARN(!(wdev->key_map & BIT(idx)), "inconsistent key allocation"); + wdev->key_map &= ~BIT(idx); +} + +static u8 fill_wep_pair(struct hif_wep_pairwise_key *msg, + struct ieee80211_key_conf *key, u8 *peer_addr) +{ + WARN(key->keylen > sizeof(msg->key_data), "inconsistent data"); + msg->key_length = key->keylen; + memcpy(msg->key_data, key->key, key->keylen); + ether_addr_copy(msg->peer_address, peer_addr); + return HIF_KEY_TYPE_WEP_PAIRWISE; +} + +static u8 fill_wep_group(struct hif_wep_group_key *msg, + struct ieee80211_key_conf *key) +{ + WARN(key->keylen > sizeof(msg->key_data), "inconsistent data"); + msg->key_id = key->keyidx; + msg->key_length = key->keylen; + memcpy(msg->key_data, key->key, key->keylen); + return HIF_KEY_TYPE_WEP_DEFAULT; +} + +static u8 fill_tkip_pair(struct hif_tkip_pairwise_key *msg, + struct ieee80211_key_conf *key, u8 *peer_addr) +{ + u8 *keybuf = key->key; + + WARN(key->keylen != sizeof(msg->tkip_key_data) + + sizeof(msg->tx_mic_key) + + sizeof(msg->rx_mic_key), "inconsistent data"); + memcpy(msg->tkip_key_data, keybuf, sizeof(msg->tkip_key_data)); + keybuf += sizeof(msg->tkip_key_data); + memcpy(msg->tx_mic_key, keybuf, sizeof(msg->tx_mic_key)); + keybuf += sizeof(msg->tx_mic_key); + memcpy(msg->rx_mic_key, keybuf, sizeof(msg->rx_mic_key)); + ether_addr_copy(msg->peer_address, peer_addr); + return HIF_KEY_TYPE_TKIP_PAIRWISE; +} + +static u8 fill_tkip_group(struct hif_tkip_group_key *msg, + struct ieee80211_key_conf *key, + struct ieee80211_key_seq *seq, + enum nl80211_iftype iftype) +{ + u8 *keybuf = key->key; + + WARN(key->keylen != sizeof(msg->tkip_key_data) + + 2 * sizeof(msg->rx_mic_key), "inconsistent data"); + msg->key_id = key->keyidx; + memcpy(msg->rx_sequence_counter, + &seq->tkip.iv16, sizeof(seq->tkip.iv16)); + memcpy(msg->rx_sequence_counter + sizeof(u16), + &seq->tkip.iv32, sizeof(seq->tkip.iv32)); + memcpy(msg->tkip_key_data, keybuf, sizeof(msg->tkip_key_data)); + keybuf += sizeof(msg->tkip_key_data); + if (iftype == NL80211_IFTYPE_AP) + // Use Tx MIC Key + memcpy(msg->rx_mic_key, keybuf + 0, sizeof(msg->rx_mic_key)); + else + // Use Rx MIC Key + memcpy(msg->rx_mic_key, keybuf + 8, sizeof(msg->rx_mic_key)); + return HIF_KEY_TYPE_TKIP_GROUP; +} + +static u8 fill_ccmp_pair(struct hif_aes_pairwise_key *msg, + struct ieee80211_key_conf *key, u8 *peer_addr) +{ + WARN(key->keylen != sizeof(msg->aes_key_data), "inconsistent data"); + ether_addr_copy(msg->peer_address, peer_addr); + memcpy(msg->aes_key_data, key->key, key->keylen); + return HIF_KEY_TYPE_AES_PAIRWISE; +} + +static u8 fill_ccmp_group(struct hif_aes_group_key *msg, + struct ieee80211_key_conf *key, + struct ieee80211_key_seq *seq) +{ + WARN(key->keylen != sizeof(msg->aes_key_data), "inconsistent data"); + memcpy(msg->aes_key_data, key->key, key->keylen); + memcpy(msg->rx_sequence_counter, seq->ccmp.pn, sizeof(seq->ccmp.pn)); + memreverse(msg->rx_sequence_counter, sizeof(seq->ccmp.pn)); + msg->key_id = key->keyidx; + return HIF_KEY_TYPE_AES_GROUP; +} + +static u8 fill_sms4_pair(struct hif_wapi_pairwise_key *msg, + struct ieee80211_key_conf *key, u8 *peer_addr) +{ + u8 *keybuf = key->key; + + WARN(key->keylen != sizeof(msg->wapi_key_data) + + sizeof(msg->mic_key_data), "inconsistent data"); + ether_addr_copy(msg->peer_address, peer_addr); + memcpy(msg->wapi_key_data, keybuf, sizeof(msg->wapi_key_data)); + keybuf += sizeof(msg->wapi_key_data); + memcpy(msg->mic_key_data, keybuf, sizeof(msg->mic_key_data)); + msg->key_id = key->keyidx; + return HIF_KEY_TYPE_WAPI_PAIRWISE; +} + +static u8 fill_sms4_group(struct hif_wapi_group_key *msg, + struct ieee80211_key_conf *key) +{ + u8 *keybuf = key->key; + + WARN(key->keylen != sizeof(msg->wapi_key_data) + + sizeof(msg->mic_key_data), "inconsistent data"); + memcpy(msg->wapi_key_data, keybuf, sizeof(msg->wapi_key_data)); + keybuf += sizeof(msg->wapi_key_data); + memcpy(msg->mic_key_data, keybuf, sizeof(msg->mic_key_data)); + msg->key_id = key->keyidx; + return HIF_KEY_TYPE_WAPI_GROUP; +} + +static u8 fill_aes_cmac_group(struct hif_igtk_group_key *msg, + struct ieee80211_key_conf *key, + struct ieee80211_key_seq *seq) +{ + WARN(key->keylen != sizeof(msg->igtk_key_data), "inconsistent data"); + memcpy(msg->igtk_key_data, key->key, key->keylen); + memcpy(msg->ipn, seq->aes_cmac.pn, sizeof(seq->aes_cmac.pn)); + memreverse(msg->ipn, sizeof(seq->aes_cmac.pn)); + msg->key_id = key->keyidx; + return HIF_KEY_TYPE_IGTK_GROUP; +} + +static int wfx_add_key(struct wfx_vif *wvif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + int ret; + struct hif_req_add_key k = { }; + struct ieee80211_key_seq seq; + struct wfx_dev *wdev = wvif->wdev; + int idx = wfx_alloc_key(wvif->wdev); + bool pairwise = key->flags & IEEE80211_KEY_FLAG_PAIRWISE; + + WARN(key->flags & IEEE80211_KEY_FLAG_PAIRWISE && !sta, "inconsistent data"); + ieee80211_get_key_rx_seq(key, 0, &seq); + if (idx < 0) + return -EINVAL; + k.int_id = wvif->id; + k.entry_index = idx; + if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || + key->cipher == WLAN_CIPHER_SUITE_WEP104) { + if (pairwise) + k.type = fill_wep_pair(&k.key.wep_pairwise_key, key, + sta->addr); + else + k.type = fill_wep_group(&k.key.wep_group_key, key); + } else if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { + if (pairwise) + k.type = fill_tkip_pair(&k.key.tkip_pairwise_key, key, + sta->addr); + else + k.type = fill_tkip_group(&k.key.tkip_group_key, key, + &seq, wvif->vif->type); + } else if (key->cipher == WLAN_CIPHER_SUITE_CCMP) { + if (pairwise) + k.type = fill_ccmp_pair(&k.key.aes_pairwise_key, key, + sta->addr); + else + k.type = fill_ccmp_group(&k.key.aes_group_key, key, + &seq); + } else if (key->cipher == WLAN_CIPHER_SUITE_SMS4) { + if (pairwise) + k.type = fill_sms4_pair(&k.key.wapi_pairwise_key, key, + sta->addr); + else + k.type = fill_sms4_group(&k.key.wapi_group_key, key); + } else if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { + k.type = fill_aes_cmac_group(&k.key.igtk_group_key, key, &seq); + key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIE; + } else { + dev_warn(wdev->dev, "unsupported key type %d\n", key->cipher); + wfx_free_key(wdev, idx); + return -EOPNOTSUPP; + } + ret = hif_add_key(wdev, &k); + if (ret) { + wfx_free_key(wdev, idx); + return -EOPNOTSUPP; + } + key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE | + IEEE80211_KEY_FLAG_RESERVE_TAILROOM; + key->hw_key_idx = idx; + return 0; +} + +static int wfx_remove_key(struct wfx_vif *wvif, struct ieee80211_key_conf *key) +{ + WARN(key->hw_key_idx >= MAX_KEY_ENTRIES, "corrupted hw_key_idx"); + wfx_free_key(wvif->wdev, key->hw_key_idx); + return hif_remove_key(wvif->wdev, key->hw_key_idx); +} + +int wfx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + int ret = -EOPNOTSUPP; + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + mutex_lock(&wvif->wdev->conf_mutex); + if (cmd == SET_KEY) + ret = wfx_add_key(wvif, sta, key); + if (cmd == DISABLE_KEY) + ret = wfx_remove_key(wvif, key); + mutex_unlock(&wvif->wdev->conf_mutex); + return ret; +} + diff --git a/drivers/net/wireless/silabs/wfx/key.h b/drivers/net/wireless/silabs/wfx/key.h new file mode 100644 index 000000000000..70a44d0ca35e --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/key.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Implementation of mac80211 API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_KEY_H +#define WFX_KEY_H + +#include + +struct wfx_dev; +struct wfx_vif; + +int wfx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key); + +#endif /* WFX_STA_H */ From patchwork Tue Oct 20 12:58:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846835 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6119F16C0 for ; Tue, 20 Oct 2020 13:01:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38136224BE for ; Tue, 20 Oct 2020 13:01:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="Ovj1HuCQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407214AbgJTNBb (ORCPT ); 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Tue, 20 Oct 2020 12:59:17 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 15/24] wfx: add hif_rx.c/hif_rx.h Date: Tue, 20 Oct 2020 14:58:08 +0200 Message-Id: <20201020125817.1632995-16-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:14 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1561e34a-47ac-4814-eccb-08d874f7f3a9 X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1417; 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+ int cmd = hif->id; + int len = le16_to_cpu(hif->len) - 4; // drop header + + WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error"); + + if (!wdev->hif_cmd.buf_send) { + dev_warn(wdev->dev, "unexpected confirmation: 0x%.2x\n", cmd); + return -EINVAL; + } + + if (cmd != wdev->hif_cmd.buf_send->id) { + dev_warn(wdev->dev, + "chip response mismatch request: 0x%.2x vs 0x%.2x\n", + cmd, wdev->hif_cmd.buf_send->id); + return -EINVAL; + } + + if (wdev->hif_cmd.buf_recv) { + if (wdev->hif_cmd.len_recv >= len && len > 0) + memcpy(wdev->hif_cmd.buf_recv, buf, len); + else + status = -EIO; + } + wdev->hif_cmd.ret = status; + + complete(&wdev->hif_cmd.done); + return status; +} + +static int hif_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_cnf_tx *body = buf; + + wfx_tx_confirm_cb(wdev, body); + return 0; +} + +static int hif_multi_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_cnf_multi_transmit *body = buf; + int i; + + WARN(body->num_tx_confs <= 0, "corrupted message"); + for (i = 0; i < body->num_tx_confs; i++) + wfx_tx_confirm_cb(wdev, &body->tx_conf_payload[i]); + return 0; +} + +static int hif_startup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_startup *body = buf; + + if (body->status || body->firmware_type > 4) { + dev_err(wdev->dev, "received invalid startup indication"); + return -EINVAL; + } + memcpy(&wdev->hw_caps, body, sizeof(struct hif_ind_startup)); + le16_to_cpus((__le16 *)&wdev->hw_caps.hardware_id); + le16_to_cpus((__le16 *)&wdev->hw_caps.num_inp_ch_bufs); + le16_to_cpus((__le16 *)&wdev->hw_caps.size_inp_ch_buf); + le32_to_cpus((__le32 *)&wdev->hw_caps.supported_rate_mask); + + complete(&wdev->firmware_ready); + return 0; +} + +static int hif_wakeup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + if (!wdev->pdata.gpio_wakeup || + gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) { + dev_warn(wdev->dev, "unexpected wake-up indication\n"); + return -EIO; + } + return 0; +} + +static int hif_receive_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf, struct sk_buff *skb) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + const struct hif_ind_rx *body = buf; + + if (!wvif) { + dev_warn(wdev->dev, "%s: ignore rx data for non-existent vif %d\n", + __func__, hif->interface); + return -EIO; + } + skb_pull(skb, sizeof(struct hif_msg) + sizeof(struct hif_ind_rx)); + wfx_rx_cb(wvif, body, skb); + + return 0; +} + +static int hif_event_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + const struct hif_ind_event *body = buf; + int type = le32_to_cpu(body->event_id); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + + switch (type) { + case HIF_EVENT_IND_RCPI_RSSI: + wfx_event_report_rssi(wvif, body->event_data.rcpi_rssi); + break; + case HIF_EVENT_IND_BSSLOST: + schedule_delayed_work(&wvif->beacon_loss_work, 0); + break; + case HIF_EVENT_IND_BSSREGAINED: + cancel_delayed_work(&wvif->beacon_loss_work); + dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n"); + break; + case HIF_EVENT_IND_PS_MODE_ERROR: + dev_warn(wdev->dev, "error while processing power save request: %d\n", + le32_to_cpu(body->event_data.ps_mode_error)); + break; + default: + dev_warn(wdev->dev, "unhandled event indication: %.2x\n", + type); + break; + } + return 0; +} + +static int hif_pm_mode_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + complete(&wvif->set_pm_mode_complete); + + return 0; +} + +static int hif_scan_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + + wfx_scan_complete(wvif); + + return 0; +} + +static int hif_join_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + dev_warn(wdev->dev, "unattended JoinCompleteInd\n"); + + return 0; +} + +static int hif_suspend_resume_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + const struct hif_ind_suspend_resume_tx *body = buf; + struct wfx_vif *wvif; + + if (body->bc_mc_only) { + wvif = wdev_to_wvif(wdev, hif->interface); + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + if (body->resume) + wfx_suspend_resume_mc(wvif, STA_NOTIFY_AWAKE); + else + wfx_suspend_resume_mc(wvif, STA_NOTIFY_SLEEP); + } else { + WARN(body->peer_sta_set, "misunderstood indication"); + WARN(hif->interface != 2, "misunderstood indication"); + if (body->resume) + wfx_suspend_hot_dev(wdev, STA_NOTIFY_AWAKE); + else + wfx_suspend_hot_dev(wdev, STA_NOTIFY_SLEEP); + } + + return 0; +} + +static int hif_generic_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_generic *body = buf; + int type = le32_to_cpu(body->type); + + switch (type) { + case HIF_GENERIC_INDICATION_TYPE_RAW: + return 0; + case HIF_GENERIC_INDICATION_TYPE_STRING: + dev_info(wdev->dev, "firmware says: %s\n", (char *)&body->data); + return 0; + case HIF_GENERIC_INDICATION_TYPE_RX_STATS: + mutex_lock(&wdev->rx_stats_lock); + // Older firmware send a generic indication beside RxStats + if (!wfx_api_older_than(wdev, 1, 4)) + dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n", + body->data.rx_stats.current_temp); + memcpy(&wdev->rx_stats, &body->data.rx_stats, + sizeof(wdev->rx_stats)); + mutex_unlock(&wdev->rx_stats_lock); + return 0; + case HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO: + mutex_lock(&wdev->tx_power_loop_info_lock); + memcpy(&wdev->tx_power_loop_info, + &body->data.tx_power_loop_info, + sizeof(wdev->tx_power_loop_info)); + mutex_unlock(&wdev->tx_power_loop_info_lock); + return 0; + default: + dev_err(wdev->dev, "generic_indication: unknown indication type: %#.8x\n", + type); + return -EIO; + } +} + +static const struct { + int val; + const char *str; + bool has_param; +} hif_errors[] = { + { HIF_ERROR_FIRMWARE_ROLLBACK, + "rollback status" }, + { HIF_ERROR_FIRMWARE_DEBUG_ENABLED, + "debug feature enabled" }, + { HIF_ERROR_PDS_PAYLOAD, + "PDS version is not supported" }, + { HIF_ERROR_PDS_TESTFEATURE, + "PDS ask for an unknown test mode" }, + { HIF_ERROR_OOR_VOLTAGE, + "out-of-range power supply voltage", true }, + { HIF_ERROR_OOR_TEMPERATURE, + "out-of-range temperature", true }, + { HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE, + "secure link does not expect request during key exchange" }, + { HIF_ERROR_SLK_SESSION_KEY, + "secure link session key is invalid" }, + { HIF_ERROR_SLK_OVERFLOW, + "secure link overflow" }, + { HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE, + "secure link messages list does not match message encryption" }, + { HIF_ERROR_SLK_UNCONFIGURED, + "secure link not yet configured" }, + { HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW, + "bus clock is too slow (<1kHz)" }, + { HIF_ERROR_HIF_RX_DATA_TOO_LARGE, + "HIF message too large" }, + // Following errors only exists in old firmware versions: + { HIF_ERROR_HIF_TX_QUEUE_FULL, + "HIF messages queue is full" }, + { HIF_ERROR_HIF_BUS, + "HIF bus" }, + { HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED, + "secure link does not support multi-tx confirmations" }, + { HIF_ERROR_SLK_OUTDATED_SESSION_KEY, + "secure link session key is outdated" }, + { HIF_ERROR_SLK_DECRYPTION, + "secure link params (nonce or tag) mismatch" }, +}; + +static int hif_error_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_error *body = buf; + int type = le32_to_cpu(body->type); + int param = (s8)body->data[0]; + int i; + + for (i = 0; i < ARRAY_SIZE(hif_errors); i++) + if (type == hif_errors[i].val) + break; + if (i < ARRAY_SIZE(hif_errors)) + if (hif_errors[i].has_param) + dev_err(wdev->dev, "asynchronous error: %s: %d\n", + hif_errors[i].str, param); + else + dev_err(wdev->dev, "asynchronous error: %s\n", + hif_errors[i].str); + else + dev_err(wdev->dev, "asynchronous error: unknown: %08x\n", type); + print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, + 16, 1, hif, le16_to_cpu(hif->len), false); + wdev->chip_frozen = true; + + return 0; +}; + +static int hif_exception_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_exception *body = buf; + int type = le32_to_cpu(body->type); + + if (type == 4) + dev_err(wdev->dev, "firmware assert %d\n", + le32_to_cpup((__le32 *)body->data)); + else + dev_err(wdev->dev, "firmware exception\n"); + print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, + 16, 1, hif, le16_to_cpu(hif->len), false); + wdev->chip_frozen = true; + + return -1; +} + +static const struct { + int msg_id; + int (*handler)(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf); +} hif_handlers[] = { + /* Confirmations */ + { HIF_CNF_ID_TX, hif_tx_confirm }, + { HIF_CNF_ID_MULTI_TRANSMIT, hif_multi_tx_confirm }, + /* Indications */ + { HIF_IND_ID_STARTUP, hif_startup_indication }, + { HIF_IND_ID_WAKEUP, hif_wakeup_indication }, + { HIF_IND_ID_JOIN_COMPLETE, hif_join_complete_indication }, + { HIF_IND_ID_SET_PM_MODE_CMPL, hif_pm_mode_complete_indication }, + { HIF_IND_ID_SCAN_CMPL, hif_scan_complete_indication }, + { HIF_IND_ID_SUSPEND_RESUME_TX, hif_suspend_resume_indication }, + { HIF_IND_ID_EVENT, hif_event_indication }, + { HIF_IND_ID_GENERIC, hif_generic_indication }, + { HIF_IND_ID_ERROR, hif_error_indication }, + { HIF_IND_ID_EXCEPTION, hif_exception_indication }, + // FIXME: allocate skb_p from hif_receive_indication and make it generic + //{ HIF_IND_ID_RX, hif_receive_indication }, +}; + +void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb) +{ + int i; + const struct hif_msg *hif = (const struct hif_msg *)skb->data; + int hif_id = hif->id; + + if (hif_id == HIF_IND_ID_RX) { + // hif_receive_indication take care of skb lifetime + hif_receive_indication(wdev, hif, hif->body, skb); + return; + } + // Note: mutex_is_lock cause an implicit memory barrier that protect + // buf_send + if (mutex_is_locked(&wdev->hif_cmd.lock) + && wdev->hif_cmd.buf_send + && wdev->hif_cmd.buf_send->id == hif_id) { + hif_generic_confirm(wdev, hif, hif->body); + goto free; + } + for (i = 0; i < ARRAY_SIZE(hif_handlers); i++) { + if (hif_handlers[i].msg_id == hif_id) { + if (hif_handlers[i].handler) + hif_handlers[i].handler(wdev, hif, hif->body); + goto free; + } + } + if (hif_id & 0x80) + dev_err(wdev->dev, "unsupported HIF indication: ID %02x\n", + hif_id); + else + dev_err(wdev->dev, "unexpected HIF confirmation: ID %02x\n", + hif_id); +free: + dev_kfree_skb(skb); +} diff --git a/drivers/net/wireless/silabs/wfx/hif_rx.h b/drivers/net/wireless/silabs/wfx/hif_rx.h new file mode 100644 index 000000000000..f07c10c8c6bd --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_rx.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Implementation of chip-to-host event (aka indications) of WFxxx Split Mac + * (WSM) API. + * + * Copyright (c) 2017-2019, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (C) 2010, ST-Ericsson SA + */ +#ifndef WFX_HIF_RX_H +#define WFX_HIF_RX_H + +struct wfx_dev; +struct sk_buff; + +void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb); + +#endif From patchwork Tue Oct 20 12:58:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846827 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 33F9E16C0 for ; Tue, 20 Oct 2020 13:01:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0EB12224BE for ; Tue, 20 Oct 2020 13:01:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="O1LJv+gY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407173AbgJTNBQ (ORCPT ); Tue, 20 Oct 2020 09:01:16 -0400 Received: from mail-bn7nam10on2070.outbound.protection.outlook.com ([40.107.92.70]:55456 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406935AbgJTM7b (ORCPT ); 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Tue, 20 Oct 2020 12:59:19 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 16/24] wfx: add data_rx.c/data_rx.h Date: Tue, 20 Oct 2020 14:58:09 +0200 Message-Id: <20201020125817.1632995-17-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:17 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 12f95308-7941-4fcb-f079-08d874f7f527 X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:644; 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+ + if (wfx_api_older_than(wvif->wdev, 3, 6)) + return; + + switch (mgmt->u.action.u.addba_req.action_code) { + case WLAN_ACTION_ADDBA_REQ: + params = le16_to_cpu(mgmt->u.action.u.addba_req.capab); + tid = (params & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; + ieee80211_start_rx_ba_session_offl(wvif->vif, mgmt->sa, tid); + break; + case WLAN_ACTION_DELBA: + params = le16_to_cpu(mgmt->u.action.u.delba.params); + tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; + ieee80211_stop_rx_ba_session_offl(wvif->vif, mgmt->sa, tid); + break; + } +} + +void wfx_rx_cb(struct wfx_vif *wvif, + const struct hif_ind_rx *arg, struct sk_buff *skb) +{ + struct ieee80211_rx_status *hdr = IEEE80211_SKB_RXCB(skb); + struct ieee80211_hdr *frame = (struct ieee80211_hdr *)skb->data; + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + + memset(hdr, 0, sizeof(*hdr)); + + if (arg->status == HIF_STATUS_RX_FAIL_MIC) + hdr->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_IV_STRIPPED; + else if (arg->status) + goto drop; + + if (skb->len < sizeof(struct ieee80211_pspoll)) { + dev_warn(wvif->wdev->dev, "malformed SDU received\n"); + goto drop; + } + + hdr->band = NL80211_BAND_2GHZ; + hdr->freq = ieee80211_channel_to_frequency(arg->channel_number, + hdr->band); + + if (arg->rxed_rate >= 14) { + hdr->encoding = RX_ENC_HT; + hdr->rate_idx = arg->rxed_rate - 14; + } else if (arg->rxed_rate >= 4) { + hdr->rate_idx = arg->rxed_rate - 2; + } else { + hdr->rate_idx = arg->rxed_rate; + } + + if (!arg->rcpi_rssi) { + hdr->flag |= RX_FLAG_NO_SIGNAL_VAL; + dev_info(wvif->wdev->dev, "received frame without RSSI data\n"); + } + hdr->signal = arg->rcpi_rssi / 2 - 110; + hdr->antenna = 0; + + if (arg->encryp) + hdr->flag |= RX_FLAG_DECRYPTED; + + // Block ack negotiation is offloaded by the firmware. However, + // re-ordering must be done by the mac80211. + if (ieee80211_is_action(frame->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_BACK && + skb->len > IEEE80211_MIN_ACTION_SIZE) { + wfx_rx_handle_ba(wvif, mgmt); + goto drop; + } + + ieee80211_rx_irqsafe(wvif->wdev->hw, skb); + return; + +drop: + dev_kfree_skb(skb); +} diff --git a/drivers/net/wireless/silabs/wfx/data_rx.h b/drivers/net/wireless/silabs/wfx/data_rx.h new file mode 100644 index 000000000000..4c0da37f2084 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/data_rx.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Datapath implementation. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_DATA_RX_H +#define WFX_DATA_RX_H + +struct wfx_vif; +struct sk_buff; +struct hif_ind_rx; + +void wfx_rx_cb(struct wfx_vif *wvif, + const struct hif_ind_rx *arg, struct sk_buff *skb); + +#endif /* WFX_DATA_RX_H */ From patchwork Tue Oct 20 12:58:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846799 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D38D6157C for ; Tue, 20 Oct 2020 13:00:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A9FB224B1 for ; Tue, 20 Oct 2020 13:00:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="WjRs+5Ha" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407092AbgJTNA2 (ORCPT ); Tue, 20 Oct 2020 09:00:28 -0400 Received: from mail-bn7nam10on2070.outbound.protection.outlook.com ([40.107.92.70]:55456 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406958AbgJTM7i (ORCPT ); Tue, 20 Oct 2020 08:59:38 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=jhcNS93H+n9qVLUljRmM5r/CPfmQJVCxtBsYqaU2R6mkT0iP1hC8xjjT9HeFHee6OBf90iJvMr1ra91GLKzjxxw/uPlroFcwKmVopXLANlne7FNnwaANdTgXerEoEASjus9wH9sug1dqg/VbOH3XYkgI1NXp3j0XSyxoltJwcQz4WNIXHrpUrvxkzzDIKoF+6o2QaC9Im9VbnJOgXeApjVS/W4H+kl1Vr1fupDyxD3sFO4qcM2tNUrh4stDkpn+zB/RVmA0BltG/JmER9Eb5HGBAtf1mvrnJ85m99flo3fZxsvAdIQYFAkP28AT75jVby66NrCYqyEPsnC35gQolNw== 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-SenderADCheck; bh=eIURbkR+WRTMa/ZE0179d5foWVXp3R5tOWbXD4yj7d0=; b=m3/GMH3KbgIFljwKTIi2/O/82dFLh1vS/r1ohCohcCgTzGZ5IdROPQ9yg2V0bP2KHsfInLT/MjeRXPjY19D4ZXH6SWqY88UHcNxMefh5Na1wRmOFUr1Wrqlk7jpP1elfYrIW9+l4ri5E8DZOHJ1y0jZa05Y09/mrFYd/qB7XLw7JSzdW8EnxVzk/+Sed2I4ghS/Rasi6sftbopIgbgQ78SQKikCRs3kBxfvXZF41gyo8DUUTadEmXkj9wvK8xwbaMnN8D34c9Q37rXpUWUNGPCXXdSAJAvTlyFnTtb0cnnXnQcVlWrUSOLcSAHXsnXtB3VkkOYQ2FPna1L7QijmU3g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=eIURbkR+WRTMa/ZE0179d5foWVXp3R5tOWbXD4yj7d0=; b=WjRs+5HaMsjMn+0r6/6UWL2slbNx9pI9JhsRyNbWF1ROFtKQxik3uHDQHizf9Weu4w2LvR5QLD1/Mq6MCE17Q9cPEZJqhc+75k35R87gUiuHLvOIg/OAeCSJcgOXZeXIO43OgRW+qkhD6D+mzpFMzXbMSlXoHCdmqlveQ18AsG0= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB3040.namprd11.prod.outlook.com (2603:10b6:805:db::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.28; Tue, 20 Oct 2020 12:59:22 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3477.028; Tue, 20 Oct 2020 12:59:22 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 17/24] wfx: add queue.c/queue.h Date: Tue, 20 Oct 2020 14:58:10 +0200 Message-Id: <20201020125817.1632995-18-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:19 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d57046f8-7941-4889-cfbd-08d874f7f6be X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4714; 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+} + +void wfx_tx_unlock(struct wfx_dev *wdev) +{ + int tx_lock = atomic_dec_return(&wdev->tx_lock); + + WARN(tx_lock < 0, "inconsistent tx_lock value"); + if (!tx_lock) + wfx_bh_request_tx(wdev); +} + +void wfx_tx_flush(struct wfx_dev *wdev) +{ + int ret; + + // Do not wait for any reply if chip is frozen + if (wdev->chip_frozen) + return; + + wfx_tx_lock(wdev); + mutex_lock(&wdev->hif_cmd.lock); + ret = wait_event_timeout(wdev->hif.tx_buffers_empty, + !wdev->hif.tx_buffers_used, + msecs_to_jiffies(3000)); + if (!ret) { + dev_warn(wdev->dev, "cannot flush tx buffers (%d still busy)\n", + wdev->hif.tx_buffers_used); + wfx_pending_dump_old_frames(wdev, 3000); + // FIXME: drop pending frames here + wdev->chip_frozen = true; + } + mutex_unlock(&wdev->hif_cmd.lock); + wfx_tx_unlock(wdev); +} + +void wfx_tx_lock_flush(struct wfx_dev *wdev) +{ + wfx_tx_lock(wdev); + wfx_tx_flush(wdev); +} + +void wfx_tx_queues_init(struct wfx_vif *wvif) +{ + // The device is in charge to respect the details of the QoS parameters. + // The driver just ensure that it roughtly respect the priorities to + // avoid any shortage. + const int priorities[IEEE80211_NUM_ACS] = { 1, 2, 64, 128 }; + int i; + + for (i = 0; i < IEEE80211_NUM_ACS; ++i) { + skb_queue_head_init(&wvif->tx_queue[i].normal); + skb_queue_head_init(&wvif->tx_queue[i].cab); + wvif->tx_queue[i].priority = priorities[i]; + } +} + +void wfx_tx_queues_check_empty(struct wfx_vif *wvif) +{ + int i; + + for (i = 0; i < IEEE80211_NUM_ACS; ++i) { + WARN_ON(atomic_read(&wvif->tx_queue[i].pending_frames)); + WARN_ON(!skb_queue_empty_lockless(&wvif->tx_queue[i].normal)); + WARN_ON(!skb_queue_empty_lockless(&wvif->tx_queue[i].cab)); + } +} + +bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue) +{ + return skb_queue_empty(&queue->normal) && skb_queue_empty(&queue->cab); +} + +static void __wfx_tx_queue_drop(struct wfx_vif *wvif, + struct sk_buff_head *skb_queue, + struct sk_buff_head *dropped) +{ + struct sk_buff *skb, *tmp; + + spin_lock_bh(&skb_queue->lock); + skb_queue_walk_safe(skb_queue, skb, tmp) { + __skb_unlink(skb, skb_queue); + skb_queue_head(dropped, skb); + } + spin_unlock_bh(&skb_queue->lock); +} + +void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue, + struct sk_buff_head *dropped) +{ + __wfx_tx_queue_drop(wvif, &queue->cab, dropped); + __wfx_tx_queue_drop(wvif, &queue->normal, dropped); + wake_up(&wvif->wdev->tx_dequeue); +} + +void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb) +{ + struct wfx_queue *queue = &wvif->tx_queue[skb_get_queue_mapping(skb)]; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + + if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) + skb_queue_tail(&queue->cab, skb); + else + skb_queue_tail(&queue->normal, skb); +} + +void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped) +{ + struct wfx_queue *queue; + struct wfx_vif *wvif; + struct hif_msg *hif; + struct sk_buff *skb; + + WARN(!wdev->chip_frozen, "%s should only be used to recover a frozen device", + __func__); + while ((skb = skb_dequeue(&wdev->tx_pending)) != NULL) { + hif = (struct hif_msg *)skb->data; + wvif = wdev_to_wvif(wdev, hif->interface); + if (wvif) { + queue = &wvif->tx_queue[skb_get_queue_mapping(skb)]; + WARN_ON(skb_get_queue_mapping(skb) > 3); + WARN_ON(!atomic_read(&queue->pending_frames)); + atomic_dec(&queue->pending_frames); + } + skb_queue_head(dropped, skb); + } +} + +struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id) +{ + struct wfx_queue *queue; + struct hif_req_tx *req; + struct wfx_vif *wvif; + struct hif_msg *hif; + struct sk_buff *skb; + + spin_lock_bh(&wdev->tx_pending.lock); + skb_queue_walk(&wdev->tx_pending, skb) { + hif = (struct hif_msg *)skb->data; + req = (struct hif_req_tx *)hif->body; + if (req->packet_id != packet_id) + continue; + spin_unlock_bh(&wdev->tx_pending.lock); + wvif = wdev_to_wvif(wdev, hif->interface); + if (wvif) { + queue = &wvif->tx_queue[skb_get_queue_mapping(skb)]; + WARN_ON(skb_get_queue_mapping(skb) > 3); + WARN_ON(!atomic_read(&queue->pending_frames)); + atomic_dec(&queue->pending_frames); + } + skb_unlink(skb, &wdev->tx_pending); + return skb; + } + spin_unlock_bh(&wdev->tx_pending.lock); + WARN(1, "cannot find packet in pending queue"); + return NULL; +} + +void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms) +{ + ktime_t now = ktime_get(); + struct wfx_tx_priv *tx_priv; + struct hif_req_tx *req; + struct sk_buff *skb; + bool first = true; + + spin_lock_bh(&wdev->tx_pending.lock); + skb_queue_walk(&wdev->tx_pending, skb) { + tx_priv = wfx_skb_tx_priv(skb); + req = wfx_skb_txreq(skb); + if (ktime_after(now, ktime_add_ms(tx_priv->xmit_timestamp, + limit_ms))) { + if (first) { + dev_info(wdev->dev, "frames stuck in firmware since %dms or more:\n", + limit_ms); + first = false; + } + dev_info(wdev->dev, " id %08x sent %lldms ago\n", + req->packet_id, + ktime_ms_delta(now, tx_priv->xmit_timestamp)); + } + } + spin_unlock_bh(&wdev->tx_pending.lock); +} + +unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev, + struct sk_buff *skb) +{ + ktime_t now = ktime_get(); + struct wfx_tx_priv *tx_priv = wfx_skb_tx_priv(skb); + + return ktime_us_delta(now, tx_priv->xmit_timestamp); +} + +bool wfx_tx_queues_has_cab(struct wfx_vif *wvif) +{ + int i; + + if (wvif->vif->type != NL80211_IFTYPE_AP) + return false; + for (i = 0; i < IEEE80211_NUM_ACS; ++i) + // Note: since only AP can have mcast frames in queue and only + // one vif can be AP, all queued frames has same interface id + if (!skb_queue_empty_lockless(&wvif->tx_queue[i].cab)) + return true; + return false; +} + +static int wfx_tx_queue_get_weight(struct wfx_queue *queue) +{ + return atomic_read(&queue->pending_frames) * queue->priority; +} + +static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev) +{ + struct wfx_queue *queues[IEEE80211_NUM_ACS * ARRAY_SIZE(wdev->vif)]; + int i, j, num_queues = 0; + struct wfx_vif *wvif; + struct hif_msg *hif; + struct sk_buff *skb; + + // sort the queues + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + WARN_ON(num_queues >= ARRAY_SIZE(queues)); + queues[num_queues] = &wvif->tx_queue[i]; + for (j = num_queues; j > 0; j--) + if (wfx_tx_queue_get_weight(queues[j]) < + wfx_tx_queue_get_weight(queues[j - 1])) + swap(queues[j - 1], queues[j]); + num_queues++; + } + } + + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + if (!wvif->after_dtim_tx_allowed) + continue; + for (i = 0; i < num_queues; i++) { + skb = skb_dequeue(&queues[i]->cab); + if (!skb) + continue; + // Note: since only AP can have mcast frames in queue + // and only one vif can be AP, all queued frames has + // same interface id + hif = (struct hif_msg *)skb->data; + WARN_ON(hif->interface != wvif->id); + WARN_ON(queues[i] != + &wvif->tx_queue[skb_get_queue_mapping(skb)]); + atomic_inc(&queues[i]->pending_frames); + trace_queues_stats(wdev, queues[i]); + return skb; + } + // No more multicast to sent + wvif->after_dtim_tx_allowed = false; + schedule_work(&wvif->update_tim_work); + } + + for (i = 0; i < num_queues; i++) { + skb = skb_dequeue(&queues[i]->normal); + if (skb) { + atomic_inc(&queues[i]->pending_frames); + trace_queues_stats(wdev, queues[i]); + return skb; + } + } + return NULL; +} + +struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev) +{ + struct wfx_tx_priv *tx_priv; + struct sk_buff *skb; + + if (atomic_read(&wdev->tx_lock)) + return NULL; + skb = wfx_tx_queues_get_skb(wdev); + if (!skb) + return NULL; + skb_queue_tail(&wdev->tx_pending, skb); + wake_up(&wdev->tx_dequeue); + tx_priv = wfx_skb_tx_priv(skb); + tx_priv->xmit_timestamp = ktime_get(); + return (struct hif_msg *)skb->data; +} diff --git a/drivers/net/wireless/silabs/wfx/queue.h b/drivers/net/wireless/silabs/wfx/queue.h new file mode 100644 index 000000000000..80ba19455ef3 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/queue.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * O(1) TX queue with built-in allocator. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_QUEUE_H +#define WFX_QUEUE_H + +#include +#include + +struct wfx_dev; +struct wfx_vif; + +struct wfx_queue { + struct sk_buff_head normal; + struct sk_buff_head cab; // Content After (DTIM) Beacon + atomic_t pending_frames; + int priority; +}; + +void wfx_tx_lock(struct wfx_dev *wdev); +void wfx_tx_unlock(struct wfx_dev *wdev); +void wfx_tx_flush(struct wfx_dev *wdev); +void wfx_tx_lock_flush(struct wfx_dev *wdev); + +void wfx_tx_queues_init(struct wfx_vif *wvif); +void wfx_tx_queues_check_empty(struct wfx_vif *wvif); +bool wfx_tx_queues_has_cab(struct wfx_vif *wvif); +void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb); +struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev); + +bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue); +void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue, + struct sk_buff_head *dropped); + +struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id); +void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped); +unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev, + struct sk_buff *skb); +void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms); + +#endif /* WFX_QUEUE_H */ From patchwork Tue Oct 20 12:58:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846841 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A336914B7 for ; Tue, 20 Oct 2020 13:01:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71718224B8 for ; Tue, 20 Oct 2020 13:01:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="loLemaiA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407226AbgJTNBd (ORCPT ); Tue, 20 Oct 2020 09:01:33 -0400 Received: from mail-bn7nam10on2070.outbound.protection.outlook.com ([40.107.92.70]:55456 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2406972AbgJTNB3 (ORCPT ); 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Tue, 20 Oct 2020 12:59:24 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 18/24] wfx: add data_tx.c/data_tx.h Date: Tue, 20 Oct 2020 14:58:11 +0200 Message-Id: <20201020125817.1632995-19-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:22 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 39f84934-e422-407f-340c-08d874f7f82c X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5516; 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+ + if (rate->idx < 0) + return -1; + if (rate->flags & IEEE80211_TX_RC_MCS) { + if (rate->idx > 7) { + WARN(1, "wrong rate->idx value: %d", rate->idx); + return -1; + } + return rate->idx + 14; + } + // WFx only support 2GHz, else band information should be retrieved + // from ieee80211_tx_info + band = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]; + if (rate->idx >= band->n_bitrates) { + WARN(1, "wrong rate->idx value: %d", rate->idx); + return -1; + } + return band->bitrates[rate->idx].hw_value; +} + +/* TX policy cache implementation */ + +static void wfx_tx_policy_build(struct wfx_vif *wvif, struct tx_policy *policy, + struct ieee80211_tx_rate *rates) +{ + struct wfx_dev *wdev = wvif->wdev; + int i, rateid; + u8 count; + + WARN(rates[0].idx < 0, "invalid rate policy"); + memset(policy, 0, sizeof(*policy)); + for (i = 0; i < IEEE80211_TX_MAX_RATES; ++i) { + if (rates[i].idx < 0) + break; + WARN_ON(rates[i].count > 15); + rateid = wfx_get_hw_rate(wdev, &rates[i]); + // Pack two values in each byte of policy->rates + count = rates[i].count; + if (rateid % 2) + count <<= 4; + policy->rates[rateid / 2] |= count; + } +} + +static bool tx_policy_is_equal(const struct tx_policy *a, + const struct tx_policy *b) +{ + return !memcmp(a->rates, b->rates, sizeof(a->rates)); +} + +static int wfx_tx_policy_find(struct tx_policy_cache *cache, + struct tx_policy *wanted) +{ + struct tx_policy *it; + + list_for_each_entry(it, &cache->used, link) + if (tx_policy_is_equal(wanted, it)) + return it - cache->cache; + list_for_each_entry(it, &cache->free, link) + if (tx_policy_is_equal(wanted, it)) + return it - cache->cache; + return -1; +} + +static void wfx_tx_policy_use(struct tx_policy_cache *cache, + struct tx_policy *entry) +{ + ++entry->usage_count; + list_move(&entry->link, &cache->used); +} + +static int wfx_tx_policy_release(struct tx_policy_cache *cache, + struct tx_policy *entry) +{ + int ret = --entry->usage_count; + + if (!ret) + list_move(&entry->link, &cache->free); + return ret; +} + +static int wfx_tx_policy_get(struct wfx_vif *wvif, + struct ieee80211_tx_rate *rates, bool *renew) +{ + int idx; + struct tx_policy_cache *cache = &wvif->tx_policy_cache; + struct tx_policy wanted; + + wfx_tx_policy_build(wvif, &wanted, rates); + + spin_lock_bh(&cache->lock); + if (list_empty(&cache->free)) { + WARN(1, "unable to get a valid Tx policy"); + spin_unlock_bh(&cache->lock); + return HIF_TX_RETRY_POLICY_INVALID; + } + idx = wfx_tx_policy_find(cache, &wanted); + if (idx >= 0) { + *renew = false; + } else { + struct tx_policy *entry; + *renew = true; + /* If policy is not found create a new one + * using the oldest entry in "free" list + */ + entry = list_entry(cache->free.prev, struct tx_policy, link); + memcpy(entry->rates, wanted.rates, sizeof(entry->rates)); + entry->uploaded = false; + entry->usage_count = 0; + idx = entry - cache->cache; + } + wfx_tx_policy_use(cache, &cache->cache[idx]); + if (list_empty(&cache->free)) + ieee80211_stop_queues(wvif->wdev->hw); + spin_unlock_bh(&cache->lock); + return idx; +} + +static void wfx_tx_policy_put(struct wfx_vif *wvif, int idx) +{ + int usage, locked; + struct tx_policy_cache *cache = &wvif->tx_policy_cache; + + if (idx == HIF_TX_RETRY_POLICY_INVALID) + return; + spin_lock_bh(&cache->lock); + locked = list_empty(&cache->free); + usage = wfx_tx_policy_release(cache, &cache->cache[idx]); + if (locked && !usage) + ieee80211_wake_queues(wvif->wdev->hw); + spin_unlock_bh(&cache->lock); +} + +static int wfx_tx_policy_upload(struct wfx_vif *wvif) +{ + struct tx_policy *policies = wvif->tx_policy_cache.cache; + u8 tmp_rates[12]; + int i, is_used; + + do { + spin_lock_bh(&wvif->tx_policy_cache.lock); + for (i = 0; i < ARRAY_SIZE(wvif->tx_policy_cache.cache); ++i) { + is_used = memzcmp(policies[i].rates, + sizeof(policies[i].rates)); + if (!policies[i].uploaded && is_used) + break; + } + if (i < ARRAY_SIZE(wvif->tx_policy_cache.cache)) { + policies[i].uploaded = true; + memcpy(tmp_rates, policies[i].rates, sizeof(tmp_rates)); + spin_unlock_bh(&wvif->tx_policy_cache.lock); + hif_set_tx_rate_retry_policy(wvif, i, tmp_rates); + } else { + spin_unlock_bh(&wvif->tx_policy_cache.lock); + } + } while (i < ARRAY_SIZE(wvif->tx_policy_cache.cache)); + return 0; +} + +void wfx_tx_policy_upload_work(struct work_struct *work) +{ + struct wfx_vif *wvif = + container_of(work, struct wfx_vif, tx_policy_upload_work); + + wfx_tx_policy_upload(wvif); + wfx_tx_unlock(wvif->wdev); +} + +void wfx_tx_policy_init(struct wfx_vif *wvif) +{ + struct tx_policy_cache *cache = &wvif->tx_policy_cache; + int i; + + memset(cache, 0, sizeof(*cache)); + + spin_lock_init(&cache->lock); + INIT_LIST_HEAD(&cache->used); + INIT_LIST_HEAD(&cache->free); + + for (i = 0; i < ARRAY_SIZE(cache->cache); ++i) + list_add(&cache->cache[i].link, &cache->free); +} + +/* Tx implementation */ + +static bool ieee80211_is_action_back(struct ieee80211_hdr *hdr) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)hdr; + + if (!ieee80211_is_action(mgmt->frame_control)) + return false; + if (mgmt->u.action.category != WLAN_CATEGORY_BACK) + return false; + return true; +} + +static u8 wfx_tx_get_link_id(struct wfx_vif *wvif, struct ieee80211_sta *sta, + struct ieee80211_hdr *hdr) +{ + struct wfx_sta_priv *sta_priv = + sta ? (struct wfx_sta_priv *)&sta->drv_priv : NULL; + const u8 *da = ieee80211_get_DA(hdr); + + if (sta_priv && sta_priv->link_id) + return sta_priv->link_id; + if (wvif->vif->type != NL80211_IFTYPE_AP) + return 0; + if (is_multicast_ether_addr(da)) + return 0; + return HIF_LINK_ID_NOT_ASSOCIATED; +} + +static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates) +{ + int i; + bool finished; + + // Firmware is not able to mix rates with different flags + for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI) + rates[i].flags |= IEEE80211_TX_RC_SHORT_GI; + if (!(rates[0].flags & IEEE80211_TX_RC_SHORT_GI)) + rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI; + if (!(rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)) + rates[i].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS; + } + + // Sort rates and remove duplicates + do { + finished = true; + for (i = 0; i < IEEE80211_TX_MAX_RATES - 1; i++) { + if (rates[i + 1].idx == rates[i].idx && + rates[i].idx != -1) { + rates[i].count += rates[i + 1].count; + if (rates[i].count > 15) + rates[i].count = 15; + rates[i + 1].idx = -1; + rates[i + 1].count = 0; + + finished = false; + } + if (rates[i + 1].idx > rates[i].idx) { + swap(rates[i + 1], rates[i]); + finished = false; + } + } + } while (!finished); + // Ensure that MCS0 or 1Mbps is present at the end of the retry list + for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + if (rates[i].idx == 0) + break; + if (rates[i].idx == -1) { + rates[i].idx = 0; + rates[i].count = 8; // == hw->max_rate_tries + rates[i].flags = rates[i - 1].flags & + IEEE80211_TX_RC_MCS; + break; + } + } + // All retries use long GI + for (i = 1; i < IEEE80211_TX_MAX_RATES; i++) + rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI; +} + +static u8 wfx_tx_get_rate_id(struct wfx_vif *wvif, + struct ieee80211_tx_info *tx_info) +{ + bool tx_policy_renew = false; + u8 rate_id; + + rate_id = wfx_tx_policy_get(wvif, + tx_info->driver_rates, &tx_policy_renew); + if (rate_id == HIF_TX_RETRY_POLICY_INVALID) + dev_warn(wvif->wdev->dev, "unable to get a valid Tx policy"); + + if (tx_policy_renew) { + wfx_tx_lock(wvif->wdev); + if (!schedule_work(&wvif->tx_policy_upload_work)) + wfx_tx_unlock(wvif->wdev); + } + return rate_id; +} + +static int wfx_tx_get_frame_format(struct ieee80211_tx_info *tx_info) +{ + if (!(tx_info->driver_rates[0].flags & IEEE80211_TX_RC_MCS)) + return HIF_FRAME_FORMAT_NON_HT; + else if (!(tx_info->driver_rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)) + return HIF_FRAME_FORMAT_MIXED_FORMAT_HT; + else + return HIF_FRAME_FORMAT_GF_HT_11N; +} + +static int wfx_tx_get_icv_len(struct ieee80211_key_conf *hw_key) +{ + int mic_space; + + if (!hw_key) + return 0; + if (hw_key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) + return 0; + mic_space = (hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) ? 8 : 0; + return hw_key->icv_len + mic_space; +} + +static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta, + struct sk_buff *skb) +{ + struct hif_msg *hif_msg; + struct hif_req_tx *req; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + struct ieee80211_key_conf *hw_key = tx_info->control.hw_key; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + int queue_id = skb_get_queue_mapping(skb); + size_t offset = (size_t)skb->data & 3; + int wmsg_len = sizeof(struct hif_msg) + + sizeof(struct hif_req_tx) + offset; + + WARN(queue_id >= IEEE80211_NUM_ACS, "unsupported queue_id"); + wfx_tx_fixup_rates(tx_info->driver_rates); + + // From now tx_info->control is unusable + memset(tx_info->rate_driver_data, 0, sizeof(struct wfx_tx_priv)); + + // Fill hif_msg + WARN(skb_headroom(skb) < wmsg_len, "not enough space in skb"); + WARN(offset & 1, "attempt to transmit an unaligned frame"); + skb_put(skb, wfx_tx_get_icv_len(hw_key)); + skb_push(skb, wmsg_len); + memset(skb->data, 0, wmsg_len); + hif_msg = (struct hif_msg *)skb->data; + hif_msg->len = cpu_to_le16(skb->len); + hif_msg->id = HIF_REQ_ID_TX; + hif_msg->interface = wvif->id; + if (skb->len > wvif->wdev->hw_caps.size_inp_ch_buf) { + dev_warn(wvif->wdev->dev, + "requested frame size (%d) is larger than maximum supported (%d)\n", + skb->len, wvif->wdev->hw_caps.size_inp_ch_buf); + skb_pull(skb, wmsg_len); + return -EIO; + } + + // Fill tx request + req = (struct hif_req_tx *)hif_msg->body; + // packet_id just need to be unique on device. 32bits are more than + // necessary for that task, so we tae advantage of it to add some extra + // data for debug. + req->packet_id = atomic_add_return(1, &wvif->wdev->packet_id) & 0xFFFF; + req->packet_id |= IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)) << 16; + req->packet_id |= queue_id << 28; + + req->fc_offset = offset; + if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) + req->after_dtim = 1; + req->peer_sta_id = wfx_tx_get_link_id(wvif, sta, hdr); + // Queue index are inverted between firmware and Linux + req->queue_id = 3 - queue_id; + req->retry_policy_index = wfx_tx_get_rate_id(wvif, tx_info); + req->frame_format = wfx_tx_get_frame_format(tx_info); + if (tx_info->driver_rates[0].flags & IEEE80211_TX_RC_SHORT_GI) + req->short_gi = 1; + + // Auxiliary operations + wfx_tx_queues_put(wvif, skb); + if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) + schedule_work(&wvif->update_tim_work); + wfx_bh_request_tx(wvif->wdev); + return 0; +} + +void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif; + struct ieee80211_sta *sta = control ? control->sta : NULL; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + size_t driver_data_room = sizeof_field(struct ieee80211_tx_info, + rate_driver_data); + + compiletime_assert(sizeof(struct wfx_tx_priv) <= driver_data_room, + "struct tx_priv is too large"); + WARN(skb->next || skb->prev, "skb is already member of a list"); + // control.vif can be NULL for injected frames + if (tx_info->control.vif) + wvif = (struct wfx_vif *)tx_info->control.vif->drv_priv; + else + wvif = wvif_iterate(wdev, NULL); + if (WARN_ON(!wvif)) + goto drop; + // Because of TX_AMPDU_SETUP_IN_HW, mac80211 does not try to send any + // BlockAck session management frame. The check below exist just in case. + if (ieee80211_is_action_back(hdr)) { + dev_info(wdev->dev, "drop BA action\n"); + goto drop; + } + if (wfx_tx_inner(wvif, sta, skb)) + goto drop; + + return; + +drop: + ieee80211_tx_status_irqsafe(wdev->hw, skb); +} + +static void wfx_skb_dtor(struct wfx_vif *wvif, struct sk_buff *skb) +{ + struct hif_msg *hif = (struct hif_msg *)skb->data; + struct hif_req_tx *req = (struct hif_req_tx *)hif->body; + unsigned int offset = sizeof(struct hif_msg) + + sizeof(struct hif_req_tx) + + req->fc_offset; + + if (!wvif) { + pr_warn("vif associated with the skb does not exist anymore\n"); + return; + } + wfx_tx_policy_put(wvif, req->retry_policy_index); + skb_pull(skb, offset); + ieee80211_tx_status_irqsafe(wvif->wdev->hw, skb); +} + +static void wfx_tx_fill_rates(struct wfx_dev *wdev, + struct ieee80211_tx_info *tx_info, + const struct hif_cnf_tx *arg) +{ + struct ieee80211_tx_rate *rate; + int tx_count; + int i; + + tx_count = arg->ack_failures; + if (!arg->status || arg->ack_failures) + tx_count += 1; // Also report success + for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + rate = &tx_info->status.rates[i]; + if (rate->idx < 0) + break; + if (tx_count < rate->count && + arg->status == HIF_STATUS_TX_FAIL_RETRIES && + arg->ack_failures) + dev_dbg(wdev->dev, "all retries were not consumed: %d != %d\n", + rate->count, tx_count); + if (tx_count <= rate->count && tx_count && + arg->txed_rate != wfx_get_hw_rate(wdev, rate)) + dev_dbg(wdev->dev, "inconsistent tx_info rates: %d != %d\n", + arg->txed_rate, wfx_get_hw_rate(wdev, rate)); + if (tx_count > rate->count) { + tx_count -= rate->count; + } else if (!tx_count) { + rate->count = 0; + rate->idx = -1; + } else { + rate->count = tx_count; + tx_count = 0; + } + } + if (tx_count) + dev_dbg(wdev->dev, "%d more retries than expected\n", tx_count); +} + +void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg) +{ + struct ieee80211_tx_info *tx_info; + struct wfx_vif *wvif; + struct sk_buff *skb; + + skb = wfx_pending_get(wdev, arg->packet_id); + if (!skb) { + dev_warn(wdev->dev, "received unknown packet_id (%#.8x) from chip\n", + arg->packet_id); + return; + } + tx_info = IEEE80211_SKB_CB(skb); + wvif = wdev_to_wvif(wdev, ((struct hif_msg *)skb->data)->interface); + WARN_ON(!wvif); + if (!wvif) + return; + + // Note that wfx_pending_get_pkt_us_delay() get data from tx_info + _trace_tx_stats(arg, skb, wfx_pending_get_pkt_us_delay(wdev, skb)); + wfx_tx_fill_rates(wdev, tx_info, arg); + // From now, you can touch to tx_info->status, but do not touch to + // tx_priv anymore + // FIXME: use ieee80211_tx_info_clear_status() + memset(tx_info->rate_driver_data, 0, sizeof(tx_info->rate_driver_data)); + memset(tx_info->pad, 0, sizeof(tx_info->pad)); + + if (!arg->status) { + tx_info->status.tx_time = + le32_to_cpu(arg->media_delay) - + le32_to_cpu(arg->tx_queue_delay); + if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) + tx_info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED; + else + tx_info->flags |= IEEE80211_TX_STAT_ACK; + } else if (arg->status == HIF_STATUS_TX_FAIL_REQUEUE) { + WARN(!arg->requeue, "incoherent status and result_flags"); + if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { + wvif->after_dtim_tx_allowed = false; // DTIM period elapsed + schedule_work(&wvif->update_tim_work); + } + tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED; + } + wfx_skb_dtor(wvif, skb); +} + +static void wfx_flush_vif(struct wfx_vif *wvif, u32 queues, + struct sk_buff_head *dropped) +{ + struct wfx_queue *queue; + int i; + + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + if (!(BIT(i) & queues)) + continue; + queue = &wvif->tx_queue[i]; + if (dropped) + wfx_tx_queue_drop(wvif, queue, dropped); + } + if (wvif->wdev->chip_frozen) + return; + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + if (!(BIT(i) & queues)) + continue; + queue = &wvif->tx_queue[i]; + if (wait_event_timeout(wvif->wdev->tx_dequeue, + wfx_tx_queue_empty(wvif, queue), + msecs_to_jiffies(1000)) <= 0) + dev_warn(wvif->wdev->dev, + "frames queued while flushing tx queues?"); + } +} + +void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u32 queues, bool drop) +{ + struct wfx_dev *wdev = hw->priv; + struct sk_buff_head dropped; + struct wfx_vif *wvif; + struct hif_msg *hif; + struct sk_buff *skb; + + skb_queue_head_init(&dropped); + if (vif) { + wvif = (struct wfx_vif *)vif->drv_priv; + wfx_flush_vif(wvif, queues, drop ? &dropped : NULL); + } else { + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) + wfx_flush_vif(wvif, queues, drop ? &dropped : NULL); + } + wfx_tx_flush(wdev); + if (wdev->chip_frozen) + wfx_pending_drop(wdev, &dropped); + while ((skb = skb_dequeue(&dropped)) != NULL) { + hif = (struct hif_msg *)skb->data; + wvif = wdev_to_wvif(wdev, hif->interface); + ieee80211_tx_info_clear_status(IEEE80211_SKB_CB(skb)); + wfx_skb_dtor(wvif, skb); + } +} diff --git a/drivers/net/wireless/silabs/wfx/data_tx.h b/drivers/net/wireless/silabs/wfx/data_tx.h new file mode 100644 index 000000000000..46c9fff7a870 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/data_tx.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Datapath implementation. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_DATA_TX_H +#define WFX_DATA_TX_H + +#include +#include + +#include "hif_api_cmd.h" +#include "hif_api_mib.h" + +struct wfx_tx_priv; +struct wfx_dev; +struct wfx_vif; + +struct tx_policy { + struct list_head link; + int usage_count; + u8 rates[12]; + bool uploaded; +}; + +struct tx_policy_cache { + struct tx_policy cache[HIF_TX_RETRY_POLICY_MAX]; + // FIXME: use a trees and drop hash from tx_policy + struct list_head used; + struct list_head free; + spinlock_t lock; +}; + +struct wfx_tx_priv { + ktime_t xmit_timestamp; +}; + +void wfx_tx_policy_init(struct wfx_vif *wvif); +void wfx_tx_policy_upload_work(struct work_struct *work); + +void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, + struct sk_buff *skb); +void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg); +void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u32 queues, bool drop); + +static inline struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb) +{ + struct ieee80211_tx_info *tx_info; + + if (!skb) + return NULL; + tx_info = IEEE80211_SKB_CB(skb); + return (struct wfx_tx_priv *)tx_info->rate_driver_data; +} + +static inline struct hif_req_tx *wfx_skb_txreq(struct sk_buff *skb) +{ + struct hif_msg *hif = (struct hif_msg *)skb->data; + struct hif_req_tx *req = (struct hif_req_tx *)hif->body; + + return req; +} + +#endif /* WFX_DATA_TX_H */ From patchwork Tue Oct 20 12:58:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846891 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 07BEB14B7 for ; Tue, 20 Oct 2020 13:03:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C00AE224B8 for ; Tue, 20 Oct 2020 13:03:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="e/+PYq/I" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407307AbgJTNCz (ORCPT ); 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Tue, 20 Oct 2020 12:59:27 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 19/24] wfx: add sta.c/sta.h Date: Tue, 20 Oct 2020 14:58:12 +0200 Message-Id: <20201020125817.1632995-20-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:24 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ec3ee0e8-d8ae-4866-9000-08d874f7f994 X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1388; 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+ u32 ret = 0; + // WFx only support 2GHz + struct ieee80211_supported_band *sband = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]; + + for (i = 0; i < sband->n_bitrates; i++) { + if (rates & BIT(i)) { + if (i >= sband->n_bitrates) + dev_warn(wdev->dev, "unsupported basic rate\n"); + else + ret |= BIT(sband->bitrates[i].hw_value); + } + } + return ret; +} + +void wfx_cooling_timeout_work(struct work_struct *work) +{ + struct wfx_dev *wdev = container_of(to_delayed_work(work), + struct wfx_dev, + cooling_timeout_work); + + wdev->chip_frozen = true; + wfx_tx_unlock(wdev); +} + +void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd) +{ + if (cmd == STA_NOTIFY_AWAKE) { + // Device recover normal temperature + if (cancel_delayed_work(&wdev->cooling_timeout_work)) + wfx_tx_unlock(wdev); + } else { + // Device is too hot + schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ); + wfx_tx_lock(wdev); + } +} + +static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon) +{ + static const struct hif_ie_table_entry filter_ies[] = { + { + .ie_id = WLAN_EID_VENDOR_SPECIFIC, + .has_changed = 1, + .no_longer = 1, + .has_appeared = 1, + .oui = { 0x50, 0x6F, 0x9A }, + }, { + .ie_id = WLAN_EID_HT_OPERATION, + .has_changed = 1, + .no_longer = 1, + .has_appeared = 1, + }, { + .ie_id = WLAN_EID_ERP_INFO, + .has_changed = 1, + .no_longer = 1, + .has_appeared = 1, + } + }; + + if (!filter_beacon) { + hif_beacon_filter_control(wvif, 0, 1); + } else { + hif_set_beacon_filter_table(wvif, 3, filter_ies); + hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0); + } +} + +void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, + unsigned int *total_flags, u64 unused) +{ + struct wfx_vif *wvif = NULL; + struct wfx_dev *wdev = hw->priv; + bool filter_bssid, filter_prbreq, filter_beacon; + + // Notes: + // - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered + // - PS-Poll (FIF_PSPOLL) are never filtered + // - RTS, CTS and Ack (FIF_CONTROL) are always filtered + // - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered + // - Firmware does (yet) allow to forward unicast traffic sent to + // other stations (aka. promiscuous mode) + *total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS | + FIF_PROBE_REQ | FIF_PSPOLL; + + mutex_lock(&wdev->conf_mutex); + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + mutex_lock(&wvif->scan_lock); + + // Note: FIF_BCN_PRBRESP_PROMISC covers probe response and + // beacons from other BSS + if (*total_flags & FIF_BCN_PRBRESP_PROMISC) + filter_beacon = false; + else + filter_beacon = true; + wfx_filter_beacon(wvif, filter_beacon); + + if (*total_flags & FIF_OTHER_BSS) + filter_bssid = false; + else + filter_bssid = true; + + // In AP mode, chip can reply to probe request itself + if (*total_flags & FIF_PROBE_REQ && + wvif->vif->type == NL80211_IFTYPE_AP) { + dev_dbg(wdev->dev, "do not forward probe request in AP mode\n"); + *total_flags &= ~FIF_PROBE_REQ; + } + + if (*total_flags & FIF_PROBE_REQ) + filter_prbreq = false; + else + filter_prbreq = true; + hif_set_rx_filter(wvif, filter_bssid, filter_prbreq); + + mutex_unlock(&wvif->scan_lock); + } + mutex_unlock(&wdev->conf_mutex); +} + +static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps) +{ + struct ieee80211_channel *chan0 = NULL, *chan1 = NULL; + struct ieee80211_conf *conf = &wvif->wdev->hw->conf; + + WARN(!wvif->vif->bss_conf.assoc && enable_ps, + "enable_ps is reliable only if associated"); + if (wdev_to_wvif(wvif->wdev, 0)) + chan0 = wdev_to_wvif(wvif->wdev, 0)->vif->bss_conf.chandef.chan; + if (wdev_to_wvif(wvif->wdev, 1)) + chan1 = wdev_to_wvif(wvif->wdev, 1)->vif->bss_conf.chandef.chan; + if (chan0 && chan1 && chan0->hw_value != chan1->hw_value && + wvif->vif->type != NL80211_IFTYPE_AP) { + // It is necessary to enable powersave if channels + // are different. + if (enable_ps) + *enable_ps = true; + if (wvif->wdev->force_ps_timeout > -1) + return wvif->wdev->force_ps_timeout; + else if (wfx_api_older_than(wvif->wdev, 3, 2)) + return 0; + else + return 30; + } + if (enable_ps) + *enable_ps = wvif->vif->bss_conf.ps; + if (wvif->wdev->force_ps_timeout > -1) + return wvif->wdev->force_ps_timeout; + else if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps) + return conf->dynamic_ps_timeout; + else + return -1; +} + +int wfx_update_pm(struct wfx_vif *wvif) +{ + int ps_timeout; + bool ps; + + if (!wvif->vif->bss_conf.assoc) + return 0; + ps_timeout = wfx_get_ps_timeout(wvif, &ps); + if (!ps) + ps_timeout = 0; + WARN_ON(ps_timeout < 0); + if (wvif->uapsd_mask) + ps_timeout = 0; + + if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete, + TU_TO_JIFFIES(512))) + dev_warn(wvif->wdev->dev, + "timeout while waiting of set_pm_mode_complete\n"); + return hif_set_pm(wvif, ps, ps_timeout); +} + +int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u16 queue, const struct ieee80211_tx_queue_params *params) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + int old_uapsd = wvif->uapsd_mask; + + WARN_ON(queue >= hw->queues); + + mutex_lock(&wdev->conf_mutex); + assign_bit(queue, &wvif->uapsd_mask, params->uapsd); + hif_set_edca_queue_params(wvif, queue, params); + if (wvif->vif->type == NL80211_IFTYPE_STATION && + old_uapsd != wvif->uapsd_mask) { + hif_set_uapsd_info(wvif, wvif->uapsd_mask); + wfx_update_pm(wvif); + } + mutex_unlock(&wdev->conf_mutex); + return 0; +} + +int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif = NULL; + + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) + hif_rts_threshold(wvif, value); + return 0; +} + +/* WSM callbacks */ + +void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi) +{ + /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 + * RSSI = RCPI / 2 - 110 + */ + int rcpi_rssi; + int cqm_evt; + + rcpi_rssi = raw_rcpi_rssi / 2 - 110; + if (rcpi_rssi <= wvif->vif->bss_conf.cqm_rssi_thold) + cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; + else + cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; + ieee80211_cqm_rssi_notify(wvif->vif, cqm_evt, rcpi_rssi, GFP_KERNEL); +} + +static void wfx_beacon_loss_work(struct work_struct *work) +{ + struct wfx_vif *wvif = container_of(to_delayed_work(work), + struct wfx_vif, beacon_loss_work); + struct ieee80211_bss_conf *bss_conf = &wvif->vif->bss_conf; + + ieee80211_beacon_loss(wvif->vif); + schedule_delayed_work(to_delayed_work(work), + msecs_to_jiffies(bss_conf->beacon_int)); +} + +void wfx_set_default_unicast_key(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, int idx) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + hif_wep_default_key_id(wvif, idx); +} + +void wfx_reset(struct wfx_vif *wvif) +{ + struct wfx_dev *wdev = wvif->wdev; + + wfx_tx_lock_flush(wdev); + hif_reset(wvif, false); + wfx_tx_policy_init(wvif); + if (wvif_count(wdev) <= 1) + hif_set_block_ack_policy(wvif, 0xFF, 0xFF); + wfx_tx_unlock(wdev); + wvif->join_in_progress = false; + cancel_delayed_work_sync(&wvif->beacon_loss_work); + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) + wfx_update_pm(wvif); +} + +int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; + + sta_priv->vif_id = wvif->id; + + if (vif->type == NL80211_IFTYPE_STATION) + hif_set_mfp(wvif, sta->mfp, sta->mfp); + + // In station mode, the firmware interprets new link-id as a TDLS peer. + if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) + return 0; + sta_priv->link_id = ffz(wvif->link_id_map); + wvif->link_id_map |= BIT(sta_priv->link_id); + WARN_ON(!sta_priv->link_id); + WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX); + hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp); + + return 0; +} + +int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; + + // See note in wfx_sta_add() + if (!sta_priv->link_id) + return 0; + // FIXME add a mutex? + hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false); + wvif->link_id_map &= ~BIT(sta_priv->link_id); + return 0; +} + +static int wfx_upload_ap_templates(struct wfx_vif *wvif) +{ + struct sk_buff *skb; + + skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif); + if (!skb) + return -ENOMEM; + hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN, + API_RATE_INDEX_B_1MBPS); + dev_kfree_skb(skb); + + skb = ieee80211_proberesp_get(wvif->wdev->hw, wvif->vif); + if (!skb) + return -ENOMEM; + hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES, + API_RATE_INDEX_B_1MBPS); + dev_kfree_skb(skb); + return 0; +} + +static void wfx_set_mfp_ap(struct wfx_vif *wvif) +{ + struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif); + const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable); + const u16 *ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, + skb->data + ieoffset, + skb->len - ieoffset); + const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16); + const int pairwise_cipher_suite_size = 4 / sizeof(u16); + const int akm_suite_size = 4 / sizeof(u16); + + if (ptr) { + ptr += pairwise_cipher_suite_count_offset; + if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) + return; + ptr += 1 + pairwise_cipher_suite_size * *ptr; + if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) + return; + ptr += 1 + akm_suite_size * *ptr; + if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) + return; + hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6)); + } +} + +int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + struct wfx_dev *wdev = wvif->wdev; + int ret; + + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) + wfx_update_pm(wvif); + wvif = (struct wfx_vif *)vif->drv_priv; + wfx_upload_ap_templates(wvif); + ret = hif_start(wvif, &vif->bss_conf, wvif->channel); + if (ret > 0) + return -EIO; + wfx_set_mfp_ap(wvif); + return ret; +} + +void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wfx_reset(wvif); +} + +static void wfx_join(struct wfx_vif *wvif) +{ + int ret; + struct ieee80211_bss_conf *conf = &wvif->vif->bss_conf; + struct cfg80211_bss *bss = NULL; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + const u8 *ssidie = NULL; + int ssidlen = 0; + + wfx_tx_lock_flush(wvif->wdev); + + bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel, + conf->bssid, NULL, 0, + IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); + if (!bss && !conf->ibss_joined) { + wfx_tx_unlock(wvif->wdev); + return; + } + + rcu_read_lock(); // protect ssidie + if (bss) + ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); + if (ssidie) { + ssidlen = ssidie[1]; + if (ssidlen > IEEE80211_MAX_SSID_LEN) + ssidlen = IEEE80211_MAX_SSID_LEN; + memcpy(ssid, &ssidie[2], ssidlen); + } + rcu_read_unlock(); + + cfg80211_put_bss(wvif->wdev->hw->wiphy, bss); + + wvif->join_in_progress = true; + ret = hif_join(wvif, conf, wvif->channel, ssid, ssidlen); + if (ret) { + ieee80211_connection_loss(wvif->vif); + wfx_reset(wvif); + } else { + /* Due to beacon filtering it is possible that the + * AP's beacon is not known for the mac80211 stack. + * Disable filtering temporary to make sure the stack + * receives at least one + */ + wfx_filter_beacon(wvif, false); + } + wfx_tx_unlock(wvif->wdev); +} + +static void wfx_join_finalize(struct wfx_vif *wvif, + struct ieee80211_bss_conf *info) +{ + struct ieee80211_sta *sta = NULL; + int ampdu_density = 0; + bool greenfield = false; + + rcu_read_lock(); // protect sta + if (info->bssid && !info->ibss_joined) + sta = ieee80211_find_sta(wvif->vif, info->bssid); + if (sta && sta->ht_cap.ht_supported) + ampdu_density = sta->ht_cap.ampdu_density; + if (sta && sta->ht_cap.ht_supported && + !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)) + greenfield = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD); + rcu_read_unlock(); + + wvif->join_in_progress = false; + hif_set_association_mode(wvif, ampdu_density, greenfield, + info->use_short_preamble); + hif_keep_alive_period(wvif, 0); + // beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use + // the same value. + hif_set_bss_params(wvif, info->aid, 7); + hif_set_beacon_wakeup_period(wvif, 1, 1); + wfx_update_pm(wvif); +} + +int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wfx_upload_ap_templates(wvif); + wfx_join(wvif); + return 0; +} + +void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wfx_reset(wvif); +} + +static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable) +{ + // Driver has Content After DTIM Beacon in queue. Driver is waiting for + // a signal from the firmware. Since we are going to stop to send + // beacons, this signal will never happens. See also + // wfx_suspend_resume_mc() + if (!enable && wfx_tx_queues_has_cab(wvif)) { + wvif->after_dtim_tx_allowed = true; + wfx_bh_request_tx(wvif->wdev); + } + hif_beacon_transmit(wvif, enable); +} + +void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, u32 changed) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + int i; + + mutex_lock(&wdev->conf_mutex); + + if (changed & BSS_CHANGED_BASIC_RATES || + changed & BSS_CHANGED_BEACON_INT || + changed & BSS_CHANGED_BSSID) { + if (vif->type == NL80211_IFTYPE_STATION) + wfx_join(wvif); + } + + if (changed & BSS_CHANGED_ASSOC) { + if (info->assoc || info->ibss_joined) + wfx_join_finalize(wvif, info); + else if (!info->assoc && vif->type == NL80211_IFTYPE_STATION) + wfx_reset(wvif); + else + dev_warn(wdev->dev, "%s: misunderstood change: ASSOC\n", + __func__); + } + + if (changed & BSS_CHANGED_BEACON_INFO) { + if (vif->type != NL80211_IFTYPE_STATION) + dev_warn(wdev->dev, "%s: misunderstood change: BEACON_INFO\n", + __func__); + hif_set_beacon_wakeup_period(wvif, info->dtim_period, + info->dtim_period); + // We temporary forwarded beacon for join process. It is now no + // more necessary. + wfx_filter_beacon(wvif, true); + } + + if (changed & BSS_CHANGED_ARP_FILTER) { + for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) { + __be32 *arp_addr = &info->arp_addr_list[i]; + + if (info->arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES) + arp_addr = NULL; + if (i >= info->arp_addr_cnt) + arp_addr = NULL; + hif_set_arp_ipv4_filter(wvif, i, arp_addr); + } + } + + if (changed & BSS_CHANGED_AP_PROBE_RESP || + changed & BSS_CHANGED_BEACON) + wfx_upload_ap_templates(wvif); + + if (changed & BSS_CHANGED_BEACON_ENABLED) + wfx_enable_beacon(wvif, info->enable_beacon); + + if (changed & BSS_CHANGED_KEEP_ALIVE) + hif_keep_alive_period(wvif, info->max_idle_period * + USEC_PER_TU / USEC_PER_MSEC); + + if (changed & BSS_CHANGED_ERP_CTS_PROT) + hif_erp_use_protection(wvif, info->use_cts_prot); + + if (changed & BSS_CHANGED_ERP_SLOT) + hif_slot_time(wvif, info->use_short_slot ? 9 : 20); + + if (changed & BSS_CHANGED_CQM) + hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold, + info->cqm_rssi_hyst); + + if (changed & BSS_CHANGED_TXPOWER) + hif_set_output_power(wvif, info->txpower); + + if (changed & BSS_CHANGED_PS) + wfx_update_pm(wvif); + + mutex_unlock(&wdev->conf_mutex); +} + +static int wfx_update_tim(struct wfx_vif *wvif) +{ + struct sk_buff *skb; + u16 tim_offset, tim_length; + u8 *tim_ptr; + + skb = ieee80211_beacon_get_tim(wvif->wdev->hw, wvif->vif, + &tim_offset, &tim_length); + if (!skb) + return -ENOENT; + tim_ptr = skb->data + tim_offset; + + if (tim_offset && tim_length >= 6) { + /* Ignore DTIM count from mac80211: + * firmware handles DTIM internally. + */ + tim_ptr[2] = 0; + + /* Set/reset aid0 bit */ + if (wfx_tx_queues_has_cab(wvif)) + tim_ptr[4] |= 1; + else + tim_ptr[4] &= ~1; + } + + hif_update_ie_beacon(wvif, tim_ptr, tim_length); + dev_kfree_skb(skb); + + return 0; +} + +static void wfx_update_tim_work(struct work_struct *work) +{ + struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work); + + wfx_update_tim(wvif); +} + +int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv; + struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + schedule_work(&wvif->update_tim_work); + return 0; +} + +void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd) +{ + if (notify_cmd != STA_NOTIFY_AWAKE) + return; + WARN(!wfx_tx_queues_has_cab(wvif), "incorrect sequence"); + WARN(wvif->after_dtim_tx_allowed, "incorrect sequence"); + wvif->after_dtim_tx_allowed = true; + wfx_bh_request_tx(wvif->wdev); +} + +int wfx_ampdu_action(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_ampdu_params *params) +{ + // Aggregation is implemented fully in firmware + switch (params->action) { + case IEEE80211_AMPDU_RX_START: + case IEEE80211_AMPDU_RX_STOP: + // Just acknowledge it to enable frame re-ordering + return 0; + default: + // Leave the firmware doing its business for tx aggregation + return -ENOTSUPP; + } +} + +int wfx_add_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf) +{ + return 0; +} + +void wfx_remove_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf) +{ +} + +void wfx_change_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, + u32 changed) +{ +} + +int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *conf) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + struct ieee80211_channel *ch = conf->def.chan; + + WARN(wvif->channel, "channel overwrite"); + wvif->channel = ch; + + return 0; +} + +void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *conf) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + struct ieee80211_channel *ch = conf->def.chan; + + WARN(wvif->channel != ch, "channel mismatch"); + wvif->channel = NULL; +} + +int wfx_config(struct ieee80211_hw *hw, u32 changed) +{ + return 0; +} + +int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + int i, ret = 0; + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | + IEEE80211_VIF_SUPPORTS_UAPSD | + IEEE80211_VIF_SUPPORTS_CQM_RSSI; + + mutex_lock(&wdev->conf_mutex); + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + break; + default: + mutex_unlock(&wdev->conf_mutex); + return -EOPNOTSUPP; + } + + // FIXME: prefer use of container_of() to get vif + wvif->vif = vif; + wvif->wdev = wdev; + + wvif->link_id_map = 1; // link-id 0 is reserved for multicast + INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work); + INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work); + + init_completion(&wvif->set_pm_mode_complete); + complete(&wvif->set_pm_mode_complete); + INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work); + + mutex_init(&wvif->scan_lock); + init_completion(&wvif->scan_complete); + INIT_WORK(&wvif->scan_work, wfx_hw_scan_work); + + wfx_tx_queues_init(wvif); + wfx_tx_policy_init(wvif); + + for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) { + if (!wdev->vif[i]) { + wdev->vif[i] = vif; + wvif->id = i; + break; + } + } + WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported"); + + hif_set_macaddr(wvif, vif->addr); + + mutex_unlock(&wdev->conf_mutex); + + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + // Combo mode does not support Block Acks. We can re-enable them + if (wvif_count(wdev) == 1) + hif_set_block_ack_policy(wvif, 0xFF, 0xFF); + else + hif_set_block_ack_policy(wvif, 0x00, 0x00); + } + return ret; +} + +void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_dev *wdev = hw->priv; + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300)); + wfx_tx_queues_check_empty(wvif); + + mutex_lock(&wdev->conf_mutex); + WARN(wvif->link_id_map != 1, "corrupted state"); + + hif_reset(wvif, false); + hif_set_macaddr(wvif, NULL); + wfx_tx_policy_init(wvif); + + cancel_delayed_work_sync(&wvif->beacon_loss_work); + wdev->vif[wvif->id] = NULL; + wvif->vif = NULL; + + mutex_unlock(&wdev->conf_mutex); + + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + // Combo mode does not support Block Acks. We can re-enable them + if (wvif_count(wdev) == 1) + hif_set_block_ack_policy(wvif, 0xFF, 0xFF); + else + hif_set_block_ack_policy(wvif, 0x00, 0x00); + } +} + +int wfx_start(struct ieee80211_hw *hw) +{ + return 0; +} + +void wfx_stop(struct ieee80211_hw *hw) +{ + struct wfx_dev *wdev = hw->priv; + + WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending)); +} diff --git a/drivers/net/wireless/silabs/wfx/sta.h b/drivers/net/wireless/silabs/wfx/sta.h new file mode 100644 index 000000000000..d7b5df5ea4e6 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/sta.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Implementation of mac80211 API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_STA_H +#define WFX_STA_H + +#include + +struct wfx_dev; +struct wfx_vif; + +struct wfx_sta_priv { + int link_id; + int vif_id; +}; + +// mac80211 interface +int wfx_start(struct ieee80211_hw *hw); +void wfx_stop(struct ieee80211_hw *hw); +int wfx_config(struct ieee80211_hw *hw, u32 changed); +int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value); +void wfx_set_default_unicast_key(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, int idx); +void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, + unsigned int *total_flags, u64 unused); + +int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u16 queue, const struct ieee80211_tx_queue_params *params); +void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, u32 changed); +int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); +int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); +void wfx_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + enum sta_notify_cmd cmd, struct ieee80211_sta *sta); +int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set); +int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_ampdu_params *params); +int wfx_add_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf); +void wfx_remove_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf); +void wfx_change_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, u32 changed); +int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *conf); +void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *conf); + +// WSM Callbacks +void wfx_cooling_timeout_work(struct work_struct *work); +void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd); +void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd cmd); +void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi); +int wfx_update_pm(struct wfx_vif *wvif); + +// Other Helpers +void wfx_reset(struct wfx_vif *wvif); +u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates); + +#endif /* WFX_STA_H */ From patchwork Tue Oct 20 12:58:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846795 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AE75A157C for ; Tue, 20 Oct 2020 13:00:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EAB6224B1 for ; 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+ + ieee80211_scan_completed(hw, &info); +} + +static int update_probe_tmpl(struct wfx_vif *wvif, + struct cfg80211_scan_request *req) +{ + struct sk_buff *skb; + + skb = ieee80211_probereq_get(wvif->wdev->hw, wvif->vif->addr, + NULL, 0, req->ie_len); + if (!skb) + return -ENOMEM; + + skb_put_data(skb, req->ie, req->ie_len); + hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBREQ, 0); + dev_kfree_skb(skb); + return 0; +} + +static int send_scan_req(struct wfx_vif *wvif, + struct cfg80211_scan_request *req, int start_idx) +{ + int i, ret, timeout; + struct ieee80211_channel *ch_start, *ch_cur; + + for (i = start_idx; i < req->n_channels; i++) { + ch_start = req->channels[start_idx]; + ch_cur = req->channels[i]; + WARN(ch_cur->band != NL80211_BAND_2GHZ, "band not supported"); + if (ch_cur->max_power != ch_start->max_power) + break; + if ((ch_cur->flags ^ ch_start->flags) & IEEE80211_CHAN_NO_IR) + break; + } + wfx_tx_lock_flush(wvif->wdev); + wvif->scan_abort = false; + reinit_completion(&wvif->scan_complete); + ret = hif_scan(wvif, req, start_idx, i - start_idx, &timeout); + if (ret) { + wfx_tx_unlock(wvif->wdev); + return -EIO; + } + ret = wait_for_completion_timeout(&wvif->scan_complete, timeout); + if (req->channels[start_idx]->max_power != wvif->vif->bss_conf.txpower) + hif_set_output_power(wvif, wvif->vif->bss_conf.txpower); + wfx_tx_unlock(wvif->wdev); + if (!ret) { + dev_notice(wvif->wdev->dev, "scan timeout\n"); + hif_stop_scan(wvif); + return -ETIMEDOUT; + } + if (wvif->scan_abort) { + dev_notice(wvif->wdev->dev, "scan abort\n"); + return -ECONNABORTED; + } + return i - start_idx; +} + +/* + * It is not really necessary to run scan request asynchronously. However, + * there is a bug in "iw scan" when ieee80211_scan_completed() is called before + * wfx_hw_scan() return + */ +void wfx_hw_scan_work(struct work_struct *work) +{ + struct wfx_vif *wvif = container_of(work, struct wfx_vif, scan_work); + struct ieee80211_scan_request *hw_req = wvif->scan_req; + int chan_cur, ret; + + mutex_lock(&wvif->wdev->conf_mutex); + mutex_lock(&wvif->scan_lock); + if (wvif->join_in_progress) { + dev_info(wvif->wdev->dev, "%s: abort in-progress REQ_JOIN", + __func__); + wfx_reset(wvif); + } + update_probe_tmpl(wvif, &hw_req->req); + chan_cur = 0; + do { + ret = send_scan_req(wvif, &hw_req->req, chan_cur); + if (ret > 0) + chan_cur += ret; + } while (ret > 0 && chan_cur < hw_req->req.n_channels); + mutex_unlock(&wvif->scan_lock); + mutex_unlock(&wvif->wdev->conf_mutex); + __ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0); +} + +int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_scan_request *hw_req) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + WARN_ON(hw_req->req.n_channels > HIF_API_MAX_NB_CHANNELS); + wvif->scan_req = hw_req; + schedule_work(&wvif->scan_work); + return 0; +} + +void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wvif->scan_abort = true; + hif_stop_scan(wvif); +} + +void wfx_scan_complete(struct wfx_vif *wvif) +{ + complete(&wvif->scan_complete); +} diff --git a/drivers/net/wireless/silabs/wfx/scan.h b/drivers/net/wireless/silabs/wfx/scan.h new file mode 100644 index 000000000000..c7496a766478 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/scan.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Scan related functions. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_SCAN_H +#define WFX_SCAN_H + +#include + +struct wfx_dev; +struct wfx_vif; + +void wfx_hw_scan_work(struct work_struct *work); +int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_scan_request *req); +void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +void wfx_scan_complete(struct wfx_vif *wvif); + +#endif /* WFX_SCAN_H */ From patchwork Tue Oct 20 12:58:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846809 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7802C14B7 for ; Tue, 20 Oct 2020 13:01:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BEEA224BE for ; Tue, 20 Oct 2020 13:01:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="hQnjNxRY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407138AbgJTNAx (ORCPT ); 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Tue, 20 Oct 2020 12:59:31 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 21/24] wfx: add debug.c/debug.h Date: Tue, 20 Oct 2020 14:58:14 +0200 Message-Id: <20201020125817.1632995-22-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:29 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 09536023-b78b-4963-8236-08d874f7fc88 X-MS-TrafficTypeDiagnostic: SN6PR11MB3040: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:989; 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+ +static const struct trace_print_flags hif_mib_print_map[] = { + hif_mib_list, +}; + +static const struct trace_print_flags wfx_reg_print_map[] = { + wfx_reg_list, +}; + +static const char *get_symbol(unsigned long val, + const struct trace_print_flags *symbol_array) +{ + int i; + + for (i = 0; symbol_array[i].mask != -1; i++) { + if (val == symbol_array[i].mask) + return symbol_array[i].name; + } + + return "unknown"; +} + +const char *get_hif_name(unsigned long id) +{ + return get_symbol(id, hif_msg_print_map); +} + +const char *get_mib_name(unsigned long id) +{ + return get_symbol(id, hif_mib_print_map); +} + +const char *get_reg_name(unsigned long id) +{ + return get_symbol(id, wfx_reg_print_map); +} + +static int wfx_counters_show(struct seq_file *seq, void *v) +{ + int ret, i; + struct wfx_dev *wdev = seq->private; + struct hif_mib_extended_count_table counters[3]; + + for (i = 0; i < ARRAY_SIZE(counters); i++) { + ret = hif_get_counters_table(wdev, i, counters + i); + if (ret < 0) + return ret; + if (ret > 0) + return -EIO; + } + + seq_printf(seq, "%-24s %12s %12s %12s\n", + "", "global", "iface 0", "iface 1"); + +#define PUT_COUNTER(name) \ + seq_printf(seq, "%-24s %12d %12d %12d\n", #name, \ + le32_to_cpu(counters[2].count_##name), \ + le32_to_cpu(counters[0].count_##name), \ + le32_to_cpu(counters[1].count_##name)) + + PUT_COUNTER(tx_packets); + PUT_COUNTER(tx_multicast_frames); + PUT_COUNTER(tx_frames_success); + PUT_COUNTER(tx_frame_failures); + PUT_COUNTER(tx_frames_retried); + PUT_COUNTER(tx_frames_multi_retried); + + PUT_COUNTER(rts_success); + PUT_COUNTER(rts_failures); + PUT_COUNTER(ack_failures); + + PUT_COUNTER(rx_packets); + PUT_COUNTER(rx_frames_success); + PUT_COUNTER(rx_packet_errors); + PUT_COUNTER(plcp_errors); + PUT_COUNTER(fcs_errors); + PUT_COUNTER(rx_decryption_failures); + PUT_COUNTER(rx_mic_failures); + PUT_COUNTER(rx_no_key_failures); + PUT_COUNTER(rx_frame_duplicates); + PUT_COUNTER(rx_multicast_frames); + PUT_COUNTER(rx_cmacicv_errors); + PUT_COUNTER(rx_cmac_replays); + PUT_COUNTER(rx_mgmt_ccmp_replays); + + PUT_COUNTER(rx_beacon); + PUT_COUNTER(miss_beacon); + +#undef PUT_COUNTER + + for (i = 0; i < ARRAY_SIZE(counters[0].reserved); i++) + seq_printf(seq, "reserved[%02d]%12s %12d %12d %12d\n", i, "", + le32_to_cpu(counters[2].reserved[i]), + le32_to_cpu(counters[0].reserved[i]), + le32_to_cpu(counters[1].reserved[i])); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(wfx_counters); + +static const char * const channel_names[] = { + [0] = "1M", + [1] = "2M", + [2] = "5.5M", + [3] = "11M", + /* Entries 4 and 5 does not exist */ + [6] = "6M", + [7] = "9M", + [8] = "12M", + [9] = "18M", + [10] = "24M", + [11] = "36M", + [12] = "48M", + [13] = "54M", + [14] = "MCS0", + [15] = "MCS1", + [16] = "MCS2", + [17] = "MCS3", + [18] = "MCS4", + [19] = "MCS5", + [20] = "MCS6", + [21] = "MCS7", +}; + +static int wfx_rx_stats_show(struct seq_file *seq, void *v) +{ + struct wfx_dev *wdev = seq->private; + struct hif_rx_stats *st = &wdev->rx_stats; + int i; + + mutex_lock(&wdev->rx_stats_lock); + seq_printf(seq, "Timestamp: %dus\n", st->date); + seq_printf(seq, "Low power clock: frequency %uHz, external %s\n", + le32_to_cpu(st->pwr_clk_freq), + st->is_ext_pwr_clk ? "yes" : "no"); + seq_printf(seq, + "Num. of frames: %d, PER (x10e4): %d, Throughput: %dKbps/s\n", + st->nb_rx_frame, st->per_total, st->throughput); + seq_puts(seq, " Num. of PER RSSI SNR CFO\n"); + seq_puts(seq, " frames (x10e4) (dBm) (dB) (kHz)\n"); + for (i = 0; i < ARRAY_SIZE(channel_names); i++) { + if (channel_names[i]) + seq_printf(seq, "%5s %8d %8d %8d %8d %8d\n", + channel_names[i], + le32_to_cpu(st->nb_rx_by_rate[i]), + le16_to_cpu(st->per[i]), + (s16)le16_to_cpu(st->rssi[i]) / 100, + (s16)le16_to_cpu(st->snr[i]) / 100, + (s16)le16_to_cpu(st->cfo[i])); + } + mutex_unlock(&wdev->rx_stats_lock); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(wfx_rx_stats); + +static int wfx_tx_power_loop_show(struct seq_file *seq, void *v) +{ + struct wfx_dev *wdev = seq->private; + struct hif_tx_power_loop_info *st = &wdev->tx_power_loop_info; + int tmp; + + mutex_lock(&wdev->tx_power_loop_info_lock); + tmp = le16_to_cpu(st->tx_gain_dig); + seq_printf(seq, "Tx gain digital: %d\n", tmp); + tmp = le16_to_cpu(st->tx_gain_pa); + seq_printf(seq, "Tx gain PA: %d\n", tmp); + tmp = (s16)le16_to_cpu(st->target_pout); + seq_printf(seq, "Target Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25); + tmp = (s16)le16_to_cpu(st->p_estimation); + seq_printf(seq, "FEM Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25); + tmp = le16_to_cpu(st->vpdet); + seq_printf(seq, "Vpdet: %d mV\n", tmp); + seq_printf(seq, "Measure index: %d\n", st->measurement_index); + mutex_unlock(&wdev->tx_power_loop_info_lock); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(wfx_tx_power_loop); + +static ssize_t wfx_send_pds_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wfx_dev *wdev = file->private_data; + char *buf; + int ret; + + if (*ppos != 0) { + dev_dbg(wdev->dev, "PDS data must be written in one transaction"); + return -EBUSY; + } + buf = memdup_user(user_buf, count); + if (IS_ERR(buf)) + return PTR_ERR(buf); + *ppos = *ppos + count; + ret = wfx_send_pds(wdev, buf, count); + kfree(buf); + if (ret < 0) + return ret; + return count; +} + +static const struct file_operations wfx_send_pds_fops = { + .open = simple_open, + .write = wfx_send_pds_write, +}; + +struct dbgfs_hif_msg { + struct wfx_dev *wdev; + struct completion complete; + u8 reply[1024]; + int ret; +}; + +static ssize_t wfx_send_hif_msg_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct dbgfs_hif_msg *context = file->private_data; + struct wfx_dev *wdev = context->wdev; + struct hif_msg *request; + + if (completion_done(&context->complete)) { + dev_dbg(wdev->dev, "read previous result before start a new one\n"); + return -EBUSY; + } + if (count < sizeof(struct hif_msg)) + return -EINVAL; + + // wfx_cmd_send() checks that reply buffer is wide enough, but does not + // return precise length read. User have to know how many bytes should + // be read. Filling reply buffer with a memory pattern may help user. + memset(context->reply, 0xFF, sizeof(context->reply)); + request = memdup_user(user_buf, count); + if (IS_ERR(request)) + return PTR_ERR(request); + if (le16_to_cpu(request->len) != count) { + kfree(request); + return -EINVAL; + } + context->ret = wfx_cmd_send(wdev, request, context->reply, + sizeof(context->reply), false); + + kfree(request); + complete(&context->complete); + return count; +} + +static ssize_t wfx_send_hif_msg_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct dbgfs_hif_msg *context = file->private_data; + int ret; + + if (count > sizeof(context->reply)) + return -EINVAL; + ret = wait_for_completion_interruptible(&context->complete); + if (ret) + return ret; + if (context->ret < 0) + return context->ret; + // Be careful, write() is waiting for a full message while read() + // only returns a payload + if (copy_to_user(user_buf, context->reply, count)) + return -EFAULT; + + return count; +} + +static int wfx_send_hif_msg_open(struct inode *inode, struct file *file) +{ + struct dbgfs_hif_msg *context = kzalloc(sizeof(*context), GFP_KERNEL); + + if (!context) + return -ENOMEM; + context->wdev = inode->i_private; + init_completion(&context->complete); + file->private_data = context; + return 0; +} + +static int wfx_send_hif_msg_release(struct inode *inode, struct file *file) +{ + struct dbgfs_hif_msg *context = file->private_data; + + kfree(context); + return 0; +} + +static const struct file_operations wfx_send_hif_msg_fops = { + .open = wfx_send_hif_msg_open, + .release = wfx_send_hif_msg_release, + .write = wfx_send_hif_msg_write, + .read = wfx_send_hif_msg_read, +}; + +static int wfx_ps_timeout_set(void *data, u64 val) +{ + struct wfx_dev *wdev = (struct wfx_dev *)data; + struct wfx_vif *wvif; + + wdev->force_ps_timeout = val; + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) + wfx_update_pm(wvif); + return 0; +} + +static int wfx_ps_timeout_get(void *data, u64 *val) +{ + struct wfx_dev *wdev = (struct wfx_dev *)data; + + *val = wdev->force_ps_timeout; + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(wfx_ps_timeout_fops, wfx_ps_timeout_get, wfx_ps_timeout_set, "%lld\n"); + +int wfx_debug_init(struct wfx_dev *wdev) +{ + struct dentry *d; + + d = debugfs_create_dir("wfx", wdev->hw->wiphy->debugfsdir); + debugfs_create_file("counters", 0444, d, wdev, &wfx_counters_fops); + debugfs_create_file("rx_stats", 0444, d, wdev, &wfx_rx_stats_fops); + debugfs_create_file("tx_power_loop", 0444, d, wdev, + &wfx_tx_power_loop_fops); + debugfs_create_file("send_pds", 0200, d, wdev, &wfx_send_pds_fops); + debugfs_create_file("send_hif_msg", 0600, d, wdev, + &wfx_send_hif_msg_fops); + debugfs_create_file("ps_timeout", 0600, d, wdev, &wfx_ps_timeout_fops); + + return 0; +} diff --git a/drivers/net/wireless/silabs/wfx/debug.h b/drivers/net/wireless/silabs/wfx/debug.h new file mode 100644 index 000000000000..6f2f84d64c9e --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/debug.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugfs interface. + * + * Copyright (c) 2017-2019, Silicon Laboratories, Inc. + * Copyright (c) 2011, ST-Ericsson + */ +#ifndef WFX_DEBUG_H +#define WFX_DEBUG_H + +struct wfx_dev; + +int wfx_debug_init(struct wfx_dev *wdev); + +const char *get_hif_name(unsigned long id); +const char *get_mib_name(unsigned long id); +const char *get_reg_name(unsigned long id); + +#endif /* WFX_DEBUG_H */ From patchwork Tue Oct 20 12:58:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11846791 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6578916C0 for ; Tue, 20 Oct 2020 13:00:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D83322475 for ; Tue, 20 Oct 2020 13:00:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="KAnyGnLH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407046AbgJTM7u (ORCPT ); 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Tue, 20 Oct 2020 12:59:34 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 22/24] wfx: add traces.h Date: Tue, 20 Oct 2020 14:58:15 +0200 Message-Id: <20201020125817.1632995-23-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:32 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 911a93ee-926e-4fc8-d9b4-08d874f7fdf2 X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:66; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: fYVW3sJbYKJsfwgFxsyVIU+2nOxYfkt6v4dkKqCvcmRhDPaYh58kwk1MyxIPRg/+yxy95nZ9EjttTiEpmmrs8PF4Rwrjv6ePnSIxSFy6fjuTsYrTG01yubSpCCGCIlVCd1hNJB49dpveA0KFyEhP4fTtwjwh0F22cDCrfhLgjY9Pskxh0AzAfFolbJr1RuTScDpu7MV855G8ITgFjgDRNCL+o55ThRkSShrj3w9ideiq4iEsHsOzApn75McVE+lv0f1ODjJtvdG2bR1/Gn5v/AZhzBr5vGynZoRtXTy6Stk8BuBFim1UR29uqIf4xRD++jK92+bcB47/GbK7V+cWn4YDTEee97OIDILraOe3vDPMGf1GjWa0t1R6X7p3rhJA X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(396003)(366004)(136003)(346002)(376002)(39840400004)(186003)(316002)(4326008)(107886003)(8676002)(86362001)(26005)(2906002)(7696005)(478600001)(16526019)(956004)(6486002)(52116002)(36756003)(8936002)(2616005)(54906003)(5660300002)(1076003)(7416002)(30864003)(66574015)(6666004)(66556008)(66476007)(66946007)(83380400001)(21314003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 911a93ee-926e-4fc8-d9b4-08d874f7fdf2 X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2020 12:59:34.0419 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: gyOUK50eCcnXtTRlAleOuAVpm1YvutLv2k3f/nEDS6We5fiPFf15aMC0KjxPjxkqBYPGHuIWpgncMU4RmOVbcA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/traces.h | 501 +++++++++++++++++++++++ 1 file changed, 501 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/traces.h diff --git a/drivers/net/wireless/silabs/wfx/traces.h b/drivers/net/wireless/silabs/wfx/traces.h new file mode 100644 index 000000000000..e34c7a538c65 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/traces.h @@ -0,0 +1,501 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Tracepoints definitions. + * + * Copyright (c) 2018-2020, Silicon Laboratories, Inc. + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM wfx + +#if !defined(_WFX_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _WFX_TRACE_H + +#include +#include + +#include "bus.h" +#include "hif_api_cmd.h" +#include "hif_api_mib.h" + +/* The hell below need some explanations. For each symbolic number, we need to + * define it with TRACE_DEFINE_ENUM() and in a list for __print_symbolic. + * + * 1. Define a new macro that call TRACE_DEFINE_ENUM(): + * + * #define xxx_name(sym) TRACE_DEFINE_ENUM(sym); + * + * 2. Define list of all symbols: + * + * #define list_names \ + * ... \ + * xxx_name(XXX) \ + * ... + * + * 3. Instantiate that list_names: + * + * list_names + * + * 4. Redefine xxx_name() as an entry of array for __print_symbolic() + * + * #undef xxx_name + * #define xxx_name(msg) { msg, #msg }, + * + * 5. list_name can now nearly be used with __print_symbolic() but, + * __print_symbolic() dislike last comma of list. So we define a new list + * with a dummy element: + * + * #define list_for_print_symbolic list_names { -1, NULL } + */ + +#define _hif_msg_list \ + hif_cnf_name(ADD_KEY) \ + hif_cnf_name(BEACON_TRANSMIT) \ + hif_cnf_name(EDCA_QUEUE_PARAMS) \ + hif_cnf_name(JOIN) \ + hif_cnf_name(MAP_LINK) \ + hif_cnf_name(READ_MIB) \ + hif_cnf_name(REMOVE_KEY) \ + hif_cnf_name(RESET) \ + hif_cnf_name(SET_BSS_PARAMS) \ + hif_cnf_name(SET_PM_MODE) \ + hif_cnf_name(START) \ + hif_cnf_name(START_SCAN) \ + hif_cnf_name(STOP_SCAN) \ + hif_cnf_name(TX) \ + hif_cnf_name(MULTI_TRANSMIT) \ + hif_cnf_name(UPDATE_IE) \ + hif_cnf_name(WRITE_MIB) \ + hif_cnf_name(CONFIGURATION) \ + hif_cnf_name(CONTROL_GPIO) \ + hif_cnf_name(PREVENT_ROLLBACK) \ + hif_cnf_name(SET_SL_MAC_KEY) \ + hif_cnf_name(SL_CONFIGURE) \ + hif_cnf_name(SL_EXCHANGE_PUB_KEYS) \ + hif_cnf_name(SHUT_DOWN) \ + hif_ind_name(EVENT) \ + hif_ind_name(JOIN_COMPLETE) \ + hif_ind_name(RX) \ + hif_ind_name(SCAN_CMPL) \ + hif_ind_name(SET_PM_MODE_CMPL) \ + hif_ind_name(SUSPEND_RESUME_TX) \ + hif_ind_name(SL_EXCHANGE_PUB_KEYS) \ + hif_ind_name(ERROR) \ + hif_ind_name(EXCEPTION) \ + hif_ind_name(GENERIC) \ + hif_ind_name(WAKEUP) \ + hif_ind_name(STARTUP) + +#define hif_msg_list_enum _hif_msg_list + +#undef hif_cnf_name +#undef hif_ind_name +#define hif_cnf_name(msg) TRACE_DEFINE_ENUM(HIF_CNF_ID_##msg); +#define hif_ind_name(msg) TRACE_DEFINE_ENUM(HIF_IND_ID_##msg); +hif_msg_list_enum +#undef hif_cnf_name +#undef hif_ind_name +#define hif_cnf_name(msg) { HIF_CNF_ID_##msg, #msg }, +#define hif_ind_name(msg) { HIF_IND_ID_##msg, #msg }, +#define hif_msg_list hif_msg_list_enum { -1, NULL } + +#define _hif_mib_list \ + hif_mib_name(ARP_IP_ADDRESSES_TABLE) \ + hif_mib_name(ARP_KEEP_ALIVE_PERIOD) \ + hif_mib_name(BEACON_FILTER_ENABLE) \ + hif_mib_name(BEACON_FILTER_TABLE) \ + hif_mib_name(BEACON_STATS) \ + hif_mib_name(BEACON_WAKEUP_PERIOD) \ + hif_mib_name(BLOCK_ACK_POLICY) \ + hif_mib_name(CCA_CONFIG) \ + hif_mib_name(CONFIG_DATA_FILTER) \ + hif_mib_name(COUNTERS_TABLE) \ + hif_mib_name(CURRENT_TX_POWER_LEVEL) \ + hif_mib_name(DOT11_MAC_ADDRESS) \ + hif_mib_name(DOT11_MAX_RECEIVE_LIFETIME) \ + hif_mib_name(DOT11_MAX_TRANSMIT_MSDU_LIFETIME) \ + hif_mib_name(DOT11_RTS_THRESHOLD) \ + hif_mib_name(DOT11_WEP_DEFAULT_KEY_ID) \ + hif_mib_name(ETHERTYPE_DATAFRAME_CONDITION) \ + hif_mib_name(EXTENDED_COUNTERS_TABLE) \ + hif_mib_name(GL_BLOCK_ACK_INFO) \ + hif_mib_name(GL_OPERATIONAL_POWER_MODE) \ + hif_mib_name(GL_SET_MULTI_MSG) \ + hif_mib_name(GRP_SEQ_COUNTER) \ + hif_mib_name(INACTIVITY_TIMER) \ + hif_mib_name(INTERFACE_PROTECTION) \ + hif_mib_name(IPV4_ADDR_DATAFRAME_CONDITION) \ + hif_mib_name(IPV6_ADDR_DATAFRAME_CONDITION) \ + hif_mib_name(KEEP_ALIVE_PERIOD) \ + hif_mib_name(MAC_ADDR_DATAFRAME_CONDITION) \ + hif_mib_name(MAGIC_DATAFRAME_CONDITION) \ + hif_mib_name(MAX_TX_POWER_LEVEL) \ + hif_mib_name(NON_ERP_PROTECTION) \ + hif_mib_name(NS_IP_ADDRESSES_TABLE) \ + hif_mib_name(OVERRIDE_INTERNAL_TX_RATE) \ + hif_mib_name(PORT_DATAFRAME_CONDITION) \ + hif_mib_name(PROTECTED_MGMT_POLICY) \ + hif_mib_name(RCPI_RSSI_THRESHOLD) \ + hif_mib_name(RX_FILTER) \ + hif_mib_name(SET_ASSOCIATION_MODE) \ + hif_mib_name(SET_DATA_FILTERING) \ + hif_mib_name(SET_HT_PROTECTION) \ + hif_mib_name(SET_TX_RATE_RETRY_POLICY) \ + hif_mib_name(SET_UAPSD_INFORMATION) \ + hif_mib_name(SLOT_TIME) \ + hif_mib_name(STATISTICS_TABLE) \ + hif_mib_name(TEMPLATE_FRAME) \ + hif_mib_name(TSF_COUNTER) \ + hif_mib_name(UC_MC_BC_DATAFRAME_CONDITION) + +#define hif_mib_list_enum _hif_mib_list + +#undef hif_mib_name +#define hif_mib_name(mib) TRACE_DEFINE_ENUM(HIF_MIB_ID_##mib); +hif_mib_list_enum +#undef hif_mib_name +#define hif_mib_name(mib) { HIF_MIB_ID_##mib, #mib }, +#define hif_mib_list hif_mib_list_enum { -1, NULL } + +DECLARE_EVENT_CLASS(hif_data, + TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv), + TP_ARGS(hif, tx_fill_level, is_recv), + TP_STRUCT__entry( + __field(int, tx_fill_level) + __field(int, msg_id) + __field(const char *, msg_type) + __field(int, msg_len) + __field(int, buf_len) + __field(int, if_id) + __field(int, mib) + __array(u8, buf, 128) + ), + TP_fast_assign( + int header_len; + + __entry->tx_fill_level = tx_fill_level; + __entry->msg_len = le16_to_cpu(hif->len); + __entry->msg_id = hif->id; + __entry->if_id = hif->interface; + if (is_recv) + __entry->msg_type = __entry->msg_id & 0x80 ? "IND" : "CNF"; + else + __entry->msg_type = "REQ"; + if (!is_recv && + (__entry->msg_id == HIF_REQ_ID_READ_MIB || + __entry->msg_id == HIF_REQ_ID_WRITE_MIB)) { + __entry->mib = le16_to_cpup((__le16 *)hif->body); + header_len = 4; + } else { + __entry->mib = -1; + header_len = 0; + } + __entry->buf_len = min_t(int, __entry->msg_len, + sizeof(__entry->buf)) + - sizeof(struct hif_msg) - header_len; + memcpy(__entry->buf, hif->body + header_len, __entry->buf_len); + ), + TP_printk("%d:%d:%s_%s%s%s: %s%s (%d bytes)", + __entry->tx_fill_level, + __entry->if_id, + __entry->msg_type, + __print_symbolic(__entry->msg_id, hif_msg_list), + __entry->mib != -1 ? "/" : "", + __entry->mib != -1 ? __print_symbolic(__entry->mib, hif_mib_list) : "", + __print_hex(__entry->buf, __entry->buf_len), + __entry->msg_len > sizeof(__entry->buf) ? " ..." : "", + __entry->msg_len + ) +); +DEFINE_EVENT(hif_data, hif_send, + TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv), + TP_ARGS(hif, tx_fill_level, is_recv)); +#define _trace_hif_send(hif, tx_fill_level)\ + trace_hif_send(hif, tx_fill_level, false) +DEFINE_EVENT(hif_data, hif_recv, + TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv), + TP_ARGS(hif, tx_fill_level, is_recv)); +#define _trace_hif_recv(hif, tx_fill_level)\ + trace_hif_recv(hif, tx_fill_level, true) + +#define wfx_reg_list_enum \ + wfx_reg_name(WFX_REG_CONFIG, "CONFIG") \ + wfx_reg_name(WFX_REG_CONTROL, "CONTROL") \ + wfx_reg_name(WFX_REG_IN_OUT_QUEUE, "QUEUE") \ + wfx_reg_name(WFX_REG_AHB_DPORT, "AHB") \ + wfx_reg_name(WFX_REG_BASE_ADDR, "BASE_ADDR") \ + wfx_reg_name(WFX_REG_SRAM_DPORT, "SRAM") \ + wfx_reg_name(WFX_REG_SET_GEN_R_W, "SET_GEN_R_W") \ + wfx_reg_name(WFX_REG_FRAME_OUT, "FRAME_OUT") + +#undef wfx_reg_name +#define wfx_reg_name(sym, name) TRACE_DEFINE_ENUM(sym); +wfx_reg_list_enum +#undef wfx_reg_name +#define wfx_reg_name(sym, name) { sym, name }, +#define wfx_reg_list wfx_reg_list_enum { -1, NULL } + +DECLARE_EVENT_CLASS(io_data, + TP_PROTO(int reg, int addr, const void *io_buf, size_t len), + TP_ARGS(reg, addr, io_buf, len), + TP_STRUCT__entry( + __field(int, reg) + __field(int, addr) + __field(int, msg_len) + __field(int, buf_len) + __array(u8, buf, 32) + __array(u8, addr_str, 10) + ), + TP_fast_assign( + __entry->reg = reg; + __entry->addr = addr; + __entry->msg_len = len; + __entry->buf_len = min_t(int, sizeof(__entry->buf), + __entry->msg_len); + memcpy(__entry->buf, io_buf, __entry->buf_len); + if (addr >= 0) + snprintf(__entry->addr_str, 10, "/%08x", addr); + else + __entry->addr_str[0] = 0; + ), + TP_printk("%s%s: %s%s (%d bytes)", + __print_symbolic(__entry->reg, wfx_reg_list), + __entry->addr_str, + __print_hex(__entry->buf, __entry->buf_len), + __entry->msg_len > sizeof(__entry->buf) ? " ..." : "", + __entry->msg_len + ) +); +DEFINE_EVENT(io_data, io_write, + TP_PROTO(int reg, int addr, const void *io_buf, size_t len), + TP_ARGS(reg, addr, io_buf, len)); +#define _trace_io_ind_write(reg, addr, io_buf, len)\ + trace_io_write(reg, addr, io_buf, len) +#define _trace_io_write(reg, io_buf, len) trace_io_write(reg, -1, io_buf, len) +DEFINE_EVENT(io_data, io_read, + TP_PROTO(int reg, int addr, const void *io_buf, size_t len), + TP_ARGS(reg, addr, io_buf, len)); +#define _trace_io_ind_read(reg, addr, io_buf, len)\ + trace_io_read(reg, addr, io_buf, len) +#define _trace_io_read(reg, io_buf, len) trace_io_read(reg, -1, io_buf, len) + +DECLARE_EVENT_CLASS(io_data32, + TP_PROTO(int reg, int addr, u32 val), + TP_ARGS(reg, addr, val), + TP_STRUCT__entry( + __field(int, reg) + __field(int, addr) + __field(int, val) + __array(u8, addr_str, 10) + ), + TP_fast_assign( + __entry->reg = reg; + __entry->addr = addr; + __entry->val = val; + if (addr >= 0) + snprintf(__entry->addr_str, 10, "/%08x", addr); + else + __entry->addr_str[0] = 0; + ), + TP_printk("%s%s: %08x", + __print_symbolic(__entry->reg, wfx_reg_list), + __entry->addr_str, + __entry->val + ) +); +DEFINE_EVENT(io_data32, io_write32, + TP_PROTO(int reg, int addr, u32 val), + TP_ARGS(reg, addr, val)); +#define _trace_io_ind_write32(reg, addr, val) trace_io_write32(reg, addr, val) +#define _trace_io_write32(reg, val) trace_io_write32(reg, -1, val) +DEFINE_EVENT(io_data32, io_read32, + TP_PROTO(int reg, int addr, u32 val), + TP_ARGS(reg, addr, val)); +#define _trace_io_ind_read32(reg, addr, val) trace_io_read32(reg, addr, val) +#define _trace_io_read32(reg, val) trace_io_read32(reg, -1, val) + +DECLARE_EVENT_CLASS(piggyback, + TP_PROTO(u32 val, bool ignored), + TP_ARGS(val, ignored), + TP_STRUCT__entry( + __field(int, val) + __field(bool, ignored) + ), + TP_fast_assign( + __entry->val = val; + __entry->ignored = ignored; + ), + TP_printk("CONTROL: %08x%s", + __entry->val, + __entry->ignored ? " (ignored)" : "" + ) +); +DEFINE_EVENT(piggyback, piggyback, + TP_PROTO(u32 val, bool ignored), + TP_ARGS(val, ignored)); +#define _trace_piggyback(val, ignored) trace_piggyback(val, ignored) + +TRACE_EVENT(bh_stats, + TP_PROTO(int ind, int req, int cnf, int busy, bool release), + TP_ARGS(ind, req, cnf, busy, release), + TP_STRUCT__entry( + __field(int, ind) + __field(int, req) + __field(int, cnf) + __field(int, busy) + __field(bool, release) + ), + TP_fast_assign( + __entry->ind = ind; + __entry->req = req; + __entry->cnf = cnf; + __entry->busy = busy; + __entry->release = release; + ), + TP_printk("IND/REQ/CNF:%3d/%3d/%3d, REQ in progress:%3d, WUP: %s", + __entry->ind, + __entry->req, + __entry->cnf, + __entry->busy, + __entry->release ? "release" : "keep" + ) +); +#define _trace_bh_stats(ind, req, cnf, busy, release)\ + trace_bh_stats(ind, req, cnf, busy, release) + +TRACE_EVENT(tx_stats, + TP_PROTO(const struct hif_cnf_tx *tx_cnf, const struct sk_buff *skb, + int delay), + TP_ARGS(tx_cnf, skb, delay), + TP_STRUCT__entry( + __field(int, pkt_id) + __field(int, delay_media) + __field(int, delay_queue) + __field(int, delay_fw) + __field(int, ack_failures) + __field(int, flags) + __array(int, rate, 4) + __array(int, tx_count, 4) + ), + TP_fast_assign( + // Keep sync with wfx_rates definition in main.c + static const int hw_rate[] = { 0, 1, 2, 3, 6, 7, 8, 9, + 10, 11, 12, 13 }; + const struct ieee80211_tx_info *tx_info = + (const struct ieee80211_tx_info *)skb->cb; + const struct ieee80211_tx_rate *rates = tx_info->driver_rates; + int i; + + __entry->pkt_id = tx_cnf->packet_id; + __entry->delay_media = le32_to_cpu(tx_cnf->media_delay); + __entry->delay_queue = le32_to_cpu(tx_cnf->tx_queue_delay); + __entry->delay_fw = delay; + __entry->ack_failures = tx_cnf->ack_failures; + if (!tx_cnf->status || __entry->ack_failures) + __entry->ack_failures += 1; + + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + if (rates[0].flags & IEEE80211_TX_RC_MCS) + __entry->rate[i] = rates[i].idx; + else + __entry->rate[i] = hw_rate[rates[i].idx]; + __entry->tx_count[i] = rates[i].count; + } + __entry->flags = 0; + if (rates[0].flags & IEEE80211_TX_RC_MCS) + __entry->flags |= 0x01; + if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI) + __entry->flags |= 0x02; + if (rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) + __entry->flags |= 0x04; + if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) + __entry->flags |= 0x08; + if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) + __entry->flags |= 0x10; + if (tx_cnf->status) + __entry->flags |= 0x20; + if (tx_cnf->status == HIF_STATUS_TX_FAIL_REQUEUE) + __entry->flags |= 0x40; + ), + TP_printk("packet ID: %08x, rate policy: %s %d|%d %d|%d %d|%d %d|%d -> %d attempt, Delays media/queue/total: %4dus/%4dus/%4dus", + __entry->pkt_id, + __print_flags(__entry->flags, NULL, + { 0x01, "M" }, { 0x02, "S" }, { 0x04, "G" }, + { 0x08, "R" }, { 0x10, "D" }, { 0x20, "F" }, + { 0x40, "Q" }), + __entry->rate[0], + __entry->tx_count[0], + __entry->rate[1], + __entry->tx_count[1], + __entry->rate[2], + __entry->tx_count[2], + __entry->rate[3], + __entry->tx_count[3], + __entry->ack_failures, + __entry->delay_media, + __entry->delay_queue, + __entry->delay_fw + ) +); +#define _trace_tx_stats(tx_cnf, skb, delay) trace_tx_stats(tx_cnf, skb, delay) + +TRACE_EVENT(queues_stats, + TP_PROTO(struct wfx_dev *wdev, const struct wfx_queue *elected_queue), + TP_ARGS(wdev, elected_queue), + TP_STRUCT__entry( + __field(int, vif_id) + __field(int, queue_id) + __array(int, hw, IEEE80211_NUM_ACS * 2) + __array(int, drv, IEEE80211_NUM_ACS * 2) + __array(int, cab, IEEE80211_NUM_ACS * 2) + ), + TP_fast_assign( + const struct wfx_queue *queue; + struct wfx_vif *wvif; + int i, j; + + for (j = 0; j < IEEE80211_NUM_ACS * 2; j++) { + __entry->hw[j] = -1; + __entry->drv[j] = -1; + __entry->cab[j] = -1; + } + __entry->vif_id = -1; + __entry->queue_id = -1; + wvif = NULL; + while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + j = wvif->id * IEEE80211_NUM_ACS + i; + WARN_ON(j >= IEEE80211_NUM_ACS * 2); + queue = &wvif->tx_queue[i]; + __entry->hw[j] = atomic_read(&queue->pending_frames); + __entry->drv[j] = skb_queue_len(&queue->normal); + __entry->cab[j] = skb_queue_len(&queue->cab); + if (queue == elected_queue) { + __entry->vif_id = wvif->id; + __entry->queue_id = i; + } + } + } + ), + TP_printk("got skb from %d/%d, pend. hw/norm/cab: [ %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d ] [ %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d ]", + __entry->vif_id, __entry->queue_id, + __entry->hw[0], __entry->drv[0], __entry->cab[0], + __entry->hw[1], __entry->drv[1], __entry->cab[1], + __entry->hw[2], __entry->drv[2], __entry->cab[2], + __entry->hw[3], __entry->drv[3], __entry->cab[3], + __entry->hw[4], __entry->drv[4], __entry->cab[4], + __entry->hw[5], __entry->drv[5], __entry->cab[5], + __entry->hw[6], __entry->drv[6], __entry->cab[6], + __entry->hw[7], __entry->drv[7], __entry->cab[7] + ) +); + +#endif + +/* This part must be outside protection */ +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE traces + +#include From patchwork Tue Oct 20 12:58:17 2020 Content-Type: text/plain; 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Tue, 20 Oct 2020 12:59:38 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v2 24/24] wfx: get out from the staging area Date: Tue, 20 Oct 2020 14:58:17 +0200 Message-Id: <20201020125817.1632995-25-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> References: <20201020125817.1632995-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [37.71.187.125] X-ClientProxiedBy: PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (37.71.187.125) by PR3P192CA0026.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:56::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.21 via Frontend Transport; Tue, 20 Oct 2020 12:59:36 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5a44a8d9-af32-49ed-9a8f-08d874f800bf X-MS-TrafficTypeDiagnostic: SN6PR11MB2656: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: vUu05fel1l2HPBYB9VxXYx+QNU8TmAIH6TCIKX69JciBv03EcObhPNU5MrXuETRkn+9soWo/Ybrwht2pL2eSYPrXivTlllT32UldbaUbKeoM19pZUzzJCk8GJH6Zqe2Afygn3Z84C8o36Y0b06srBSkEI3RB61VHG9Znqu00w1EaznJMorMfXeFSJ1X75dw0/boft1Ci8eClGfCuLEh/TzJLk/eSwoWwTmsWdvKxFiF4zKtbgz7Aefaqh+YS01WNfsXaqo3cTAXCdo8IsirLeaMhWUgdqfMD8mJc3GCbGfHKW8VzWNZsiZko79FnKKbV7eWMXFWy5ia6cAYi/t9yDFhvOMlKS+nt+/b4ISXvTLTdzZTn5iBTp2YpuNc05Q5k6CH5TqdAqyvmEC4/DQ51eA== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(396003)(366004)(136003)(346002)(376002)(39840400004)(186003)(316002)(4326008)(107886003)(8676002)(86362001)(26005)(2906002)(7696005)(478600001)(16526019)(956004)(6486002)(966005)(52116002)(36756003)(8936002)(2616005)(54906003)(5660300002)(1076003)(7416002)(66574015)(6666004)(66556008)(66476007)(66946007)(83380400001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5a44a8d9-af32-49ed-9a8f-08d874f800bf X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2020 12:59:38.7522 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: gfTChqdfADM3FvvJE+BpHxzE6aBe5gFORAT8UbgI0AtkFICf/QLEmL1txIQxDQm0MBoYkCLKkx3vRiKaLbYaig== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2656 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Jérôme Pouiller The wfx driver is now mature enough to leave the staging area. Signed-off-by: Jérôme Pouiller --- MAINTAINERS | 3 ++- drivers/net/wireless/Kconfig | 1 + drivers/net/wireless/Makefile | 1 + drivers/net/wireless/silabs/Kconfig | 18 ++++++++++++++++++ drivers/net/wireless/silabs/Makefile | 3 +++ drivers/staging/Kconfig | 2 -- drivers/staging/Makefile | 1 - drivers/staging/wfx/TODO | 6 ------ 8 files changed, 25 insertions(+), 10 deletions(-) create mode 100644 drivers/net/wireless/silabs/Kconfig create mode 100644 drivers/net/wireless/silabs/Makefile delete mode 100644 drivers/staging/wfx/TODO diff --git a/MAINTAINERS b/MAINTAINERS index b158ec4a5e42..bc5dae823576 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15956,7 +15956,8 @@ F: drivers/platform/x86/touchscreen_dmi.c SILICON LABS WIRELESS DRIVERS (for WFxxx series) M: Jérôme Pouiller S: Supported -F: drivers/staging/wfx/ +F: Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml +F: drivers/net/wireless/silabs/wfx/ SILICON MOTION SM712 FRAME BUFFER DRIVER M: Sudip Mukherjee diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig index 170a64e67709..69ea83279907 100644 --- a/drivers/net/wireless/Kconfig +++ b/drivers/net/wireless/Kconfig @@ -44,6 +44,7 @@ source "drivers/net/wireless/microchip/Kconfig" source "drivers/net/wireless/ralink/Kconfig" source "drivers/net/wireless/realtek/Kconfig" source "drivers/net/wireless/rsi/Kconfig" +source "drivers/net/wireless/silabs/Kconfig" source "drivers/net/wireless/st/Kconfig" source "drivers/net/wireless/ti/Kconfig" source "drivers/net/wireless/zydas/Kconfig" diff --git a/drivers/net/wireless/Makefile b/drivers/net/wireless/Makefile index 80b324499786..76885e5f0ea7 100644 --- a/drivers/net/wireless/Makefile +++ b/drivers/net/wireless/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_WLAN_VENDOR_MICROCHIP) += microchip/ obj-$(CONFIG_WLAN_VENDOR_RALINK) += ralink/ obj-$(CONFIG_WLAN_VENDOR_REALTEK) += realtek/ obj-$(CONFIG_WLAN_VENDOR_RSI) += rsi/ +obj-$(CONFIG_WLAN_VENDOR_SILABS) += silabs/ obj-$(CONFIG_WLAN_VENDOR_ST) += st/ obj-$(CONFIG_WLAN_VENDOR_TI) += ti/ obj-$(CONFIG_WLAN_VENDOR_ZYDAS) += zydas/ diff --git a/drivers/net/wireless/silabs/Kconfig b/drivers/net/wireless/silabs/Kconfig new file mode 100644 index 000000000000..6262a799bf36 --- /dev/null +++ b/drivers/net/wireless/silabs/Kconfig @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 + +config WLAN_VENDOR_SILABS + bool "Silicon Laboratories devices" + default y + help + If you have a wireless card belonging to this class, say Y. + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all the + questions about these cards. If you say Y, you will be asked for + your specific card in the following questions. + +if WLAN_VENDOR_SILABS + +source "drivers/net/wireless/silabs/wfx/Kconfig" + +endif # WLAN_VENDOR_SILABS diff --git a/drivers/net/wireless/silabs/Makefile b/drivers/net/wireless/silabs/Makefile new file mode 100644 index 000000000000..c2263ee21006 --- /dev/null +++ b/drivers/net/wireless/silabs/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_WFX) += wfx/ diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 2d0310448eba..2d326b16272e 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -114,8 +114,6 @@ source "drivers/staging/kpc2000/Kconfig" source "drivers/staging/qlge/Kconfig" -source "drivers/staging/wfx/Kconfig" - source "drivers/staging/hikey9xx/Kconfig" endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 757a892ab5b9..9de260802db5 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -47,5 +47,4 @@ obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/ obj-$(CONFIG_FIELDBUS_DEV) += fieldbus/ obj-$(CONFIG_KPC2000) += kpc2000/ obj-$(CONFIG_QLGE) += qlge/ -obj-$(CONFIG_WFX) += wfx/ obj-y += hikey9xx/ diff --git a/drivers/staging/wfx/TODO b/drivers/staging/wfx/TODO deleted file mode 100644 index 1b4bc2af94b6..000000000000 --- a/drivers/staging/wfx/TODO +++ /dev/null @@ -1,6 +0,0 @@ -This is a list of things that need to be done to get this driver out of the -staging directory. - - - As suggested by Felix, rate control could be improved following this idea: - https://lore.kernel.org/lkml/3099559.gv3Q75KnN1@pc-42/ -