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Thu, 20 Sep 2018 02:49:17 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::54e2:88e0:b622:b36]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::54e2:88e0:b622:b36%5]) with mapi id 15.20.1185.010; Thu, 20 Sep 2018 02:49:17 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Linus Walleij , Jens Axboe , Sasha Levin Subject: [PATCH AUTOSEL 4.14 19/25] ata: ftide010: Add a quirk for SQ201 Thread-Topic: [PATCH AUTOSEL 4.14 19/25] ata: ftide010: Add a quirk for SQ201 Thread-Index: AQHUUIxpzYqChRRp7U+UsRcHwCjKaA== Date: Thu, 20 Sep 2018 02:48:28 +0000 Message-ID: <20180920024810.58594-19-alexander.levin@microsoft.com> References: <20180920024810.58594-1-alexander.levin@microsoft.com> In-Reply-To: <20180920024810.58594-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY4PR21MB0744;6:me2C0m+CtAbNfOsMZJPgmkk1QcC+pGt2oaLm2lM8OARrh+SaVp+nMM/b2d8tScME9khE4YDY8mix78jPGEhN2aKhWtyI5mn0Etlai/MoudFUbdXxj0NW0k4ez3PGdqxnfAvi23x+kszcXN2s1kBL4K+QSWRnlDZ1r1u5LoKBPRjFsH88ketZl1nd+CP/lPeX3sOaqa4wKPDIfu/tzECFE6Qm1BpP17NJG6cW0YsC4O71Pp03WR8kwg+OubLqMPzfUc7oFxFZnc5HDKh8USdQeEO3bRHyyFvakz1JFWEnv14XcniZmNHrOv8ISVeo2dQMQLDopM4BG3ySg3wNbnARO/cMxwJM1o2OPOamMcnzM4+GYfOzFklBejGycnNHwX+2Dgprg++eEGrKIz8jI9EMoiVeINrGtFQm2luOVyFZrwxlT399eGKigsaFpC5GYLUIs5ZmAsaOr1FAQL16UK6I8w==;5:iu29/5LvGSmPT5BdkRb5MhWkF05FnpLjTNALpyUPQajtkdcU3DSLxh06Hp2p3GQ7TnliClF45a1og9CI+yv/mlkxuCnYY6h4HEfAG+9pp9f+IolGwl8OAZRXvnzKi0POMYCWHsTo3umAK2YhJC7Vgd3WNsVhnbrORuN6++Hozek=;7:nlifkGKuf7/kryyQkkqGTQfv+QhnSbgcyCtR8iHrmmm38YRVbCxLNbYle+QGNqbEle8QJ80YWqeGh9SNXmkKfFdSxGdzy8Kjc9cqS8pHN2fJdCiYktACR0oRhPKt50fMB2R7v2r0A54EzUyrQKtTkEQLKIPqaKjF/gZwzRF9vmpQRu0P3MZvdIIPNqQFnpC45ePZqyFJbpqoSchIJDw/cuNyjiAZIDNDWhL9IA7SBCx1b+a1ulyKpGH/VD6TRmV8 x-ms-office365-filtering-correlation-id: 6b6e0649-d8bd-41ab-a3d6-08d61ea3a888 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(4534165)(4627221)(201703031133081)(201702281549075)(8990200)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0744; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: 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 spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6b6e0649-d8bd-41ab-a3d6-08d61ea3a888 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Sep 2018 02:48:28.9758 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0744 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Linus Walleij [ Upstream commit 46cb52ad414ac829680d0bb8cc7090ac2b577ca7 ] The DMA is broken on this specific device for some unknown reason (probably badly designed or plain broken interface electronics) and will only work with PIO. Other users of the same hardware does not have this problem. Add a specific quirk so that this Gemini device gets DMA turned off. Also fix up some code around passing the port information around in probe while we're at it. Signed-off-by: Linus Walleij Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/ata/pata_ftide010.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/ata/pata_ftide010.c b/drivers/ata/pata_ftide010.c index 5d4b72e21161..569a4a662dcd 100644 --- a/drivers/ata/pata_ftide010.c +++ b/drivers/ata/pata_ftide010.c @@ -256,14 +256,12 @@ static struct ata_port_operations pata_ftide010_port_= ops =3D { .qc_issue =3D ftide010_qc_issue, }; =20 -static struct ata_port_info ftide010_port_info[] =3D { - { - .flags =3D ATA_FLAG_SLAVE_POSS, - .mwdma_mask =3D ATA_MWDMA2, - .udma_mask =3D ATA_UDMA6, - .pio_mask =3D ATA_PIO4, - .port_ops =3D &pata_ftide010_port_ops, - }, +static struct ata_port_info ftide010_port_info =3D { + .flags =3D ATA_FLAG_SLAVE_POSS, + .mwdma_mask =3D ATA_MWDMA2, + .udma_mask =3D ATA_UDMA6, + .pio_mask =3D ATA_PIO4, + .port_ops =3D &pata_ftide010_port_ops, }; =20 #if IS_ENABLED(CONFIG_SATA_GEMINI) @@ -349,6 +347,7 @@ static int pata_ftide010_gemini_cable_detect(struct ata= _port *ap) } =20 static int pata_ftide010_gemini_init(struct ftide010 *ftide, + struct ata_port_info *pi, bool is_ata1) { struct device *dev =3D ftide->dev; @@ -373,7 +372,13 @@ static int pata_ftide010_gemini_init(struct ftide010 *= ftide, =20 /* Flag port as SATA-capable */ if (gemini_sata_bridge_enabled(sg, is_ata1)) - ftide010_port_info[0].flags |=3D ATA_FLAG_SATA; + pi->flags |=3D ATA_FLAG_SATA; + + /* This device has broken DMA, only PIO works */ + if (of_machine_is_compatible("itian,sq201")) { + pi->mwdma_mask =3D 0; + pi->udma_mask =3D 0; + } =20 /* * We assume that a simple 40-wire cable is used in the PATA mode. @@ -435,6 +440,7 @@ static int pata_ftide010_gemini_init(struct ftide010 *f= tide, } #else static int pata_ftide010_gemini_init(struct ftide010 *ftide, + struct ata_port_info *pi, bool is_ata1) { return -ENOTSUPP; @@ -446,7 +452,7 @@ static int pata_ftide010_probe(struct platform_device *= pdev) { struct device *dev =3D &pdev->dev; struct device_node *np =3D dev->of_node; - const struct ata_port_info pi =3D ftide010_port_info[0]; + struct ata_port_info pi =3D ftide010_port_info; const struct ata_port_info *ppi[] =3D { &pi, NULL }; struct ftide010 *ftide; struct resource *res; @@ -490,6 +496,7 @@ static int pata_ftide010_probe(struct platform_device *= pdev) * are ATA0. This will also set up the cable types. */ ret =3D pata_ftide010_gemini_init(ftide, + &pi, (res->start =3D=3D 0x63400000)); if (ret) goto err_dis_clk; --=20 2.17.1