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Sat, 15 Sep 2018 01:32:46 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::151:b6fe:32c8:cccd]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::151:b6fe:32c8:cccd%9]) with mapi id 15.20.1164.008; Sat, 15 Sep 2018 01:32:46 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Laurentiu Tudor , Ulf Hansson , Sasha Levin Subject: [PATCH AUTOSEL 4.14 26/57] mmc: sdhci-of-esdhc: set proper dma mask for ls104x chips Thread-Topic: [PATCH AUTOSEL 4.14 26/57] mmc: sdhci-of-esdhc: set proper dma mask for ls104x chips Thread-Index: AQHUTJQBpG7o2Q5Elk6rnbBxOeENHQ== Date: Sat, 15 Sep 2018 01:32:46 +0000 Message-ID: <20180915013223.179909-26-alexander.levin@microsoft.com> References: <20180915013223.179909-1-alexander.levin@microsoft.com> In-Reply-To: <20180915013223.179909-1-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;CY4PR21MB0822;6:883MEv9+slyi3N9il/wu5QRA82BmtRXiM/H2ryeaHFuR4sifpOyeNnnCMzstOPxmPdcgVHOmGBa5TiojoqpMtzv2GltUsLqhVKvkwcPZF4JvBBJmKoo79YcJkNV8LsYqfk8qnb7fhVmc9a6NrPzoIRCj6wkUFFqdA5cUHuSigl34Bf42XAo61VSAIaKhKHTJU7sBUkaqGkpldV/k+0snckQ7+34ZyWORNiPTJ9Owf7kKlYPF4dmjpfJE0A6vbsZcJ1Iz+ENOqMKVqSrz+Y9Ks5reI/MufBfwDMiBWjvX6OhYbPURlZUewcJeBAEsYsmBOXry/wYU4ex8wwZWTIAFLU32PgouBH53p8/N8xZ4jYtb54VmSYnxHcg5LF1lK+HOg2tz+1l1l6PY9HM5wD0Na2LGqHt73HhGgD/bdneARlq5cOPq9prqnHxx1VpO15UE+3sekDtPzHolBP40kSMiTg==;5:DQ+tOJfiXCwf3XH0znPHCjXFhLRdJ+hE9VkWF+Tit1f+BCRv3vTRYBGbINZVs86t/Az7lozh74bKxlwI+9yYA1R1pUvUdV1udhT8MMXqghQZXzEzLFUhURGndKvpv1qcatAUNQab+v9pdKYNJDfPUNHe4E5/wh0w5joi9FiOafU=;7:HGJHTgNRls6qyQP2oVkhB4t/0quGwPo2uZO4EqnrUUMQ9NRudkVh8sIrdcJwyYU5mZEMDCJot7JGhvQW3+Kmiu+xTT2ECsgwyMfaI9095G8NLDUZLr3f7bnEfKusmE3xla28p9wfT3AmncOPDaSPMzBrq/BfBiCwuznStzoNme91vxCvklql6W61mucxNVT2mIG56OUc3mPTT/N5Nq6Hl6glE0VbcDt62U1tYfd+vGVG4VzUT0VEQYOSt0Xtt7Ra x-ms-office365-filtering-correlation-id: b10754e1-a1db-4dd3-2f19-08d61aab23d3 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989137)(4534165)(4627221)(201703031133081)(201702281549075)(8990107)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0822; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: qonfLEFXQ6dBL8Ci2233w0qLbq6xB6WqpdL/PeIX0kI6g3PaiaQur0UzRAz2RIJqWPSLORbmbd2F0yeqp4nvwvAu324IpXdxmHEmbIFivnkO9l1P6hmn/EYwDkqO6fx4VfXlmCDJ7PR1Tjs8oHf8r2LWcPs+85ywR4pP7oLunxMZAipnW7w5/Y1cJPeG+BN6+7Dya1/fEPo8SJARk5CVzo7NwMOZxHBp2bnTcrgzdrXjE/jXW1UlnB/Wmw/KaFxtaKErC70s+Nx7hb2c4AYguc9sgu1wo4iDLnTkGFwdcXfpvFBTXAKac3s/Y6EZ8IDsimmYcSPhK0Q6GbvIxGTMHzDbQh/XkwG1nRWnXDXwqE0= 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: b10754e1-a1db-4dd3-2f19-08d61aab23d3 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Sep 2018 01:32:46.1338 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0822 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Laurentiu Tudor [ Upstream commit 5552d7ad596c3fea953f40fef74170ce0760c04d ] SDHCI controller in ls1043a and ls1046a generate 40-bit wide addresses when doing DMA. Make sure that the corresponding dma mask is correctly configured. Context: when enabling smmu on these chips the following problem is encountered: the smmu input address size is 48 bits so the dma mappings for sdhci end up 48-bit wide. However, on these chips sdhci only use 40-bits of that address size when doing dma. So you end up with a 48-bit address translation in smmu but the device generates transactions with clipped 40-bit addresses, thus smmu context faults are triggered. Setting up the correct dma mask fixes this situation. Signed-off-by: Laurentiu Tudor Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/host/sdhci-of-esdhc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-= esdhc.c index 4ffa6b173a21..8332f56e6c0d 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include "sdhci-pltfm.h" #include "sdhci-esdhc.h" @@ -427,6 +428,11 @@ static void esdhc_of_adma_workaround(struct sdhci_host= *host, u32 intmask) static int esdhc_of_enable_dma(struct sdhci_host *host) { u32 value; + struct device *dev =3D mmc_dev(host->mmc); + + if (of_device_is_compatible(dev->of_node, "fsl,ls1043a-esdhc") || + of_device_is_compatible(dev->of_node, "fsl,ls1046a-esdhc")) + dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); =20 value =3D sdhci_readl(host, ESDHC_DMA_SYSCTL); value |=3D ESDHC_DMA_SNOOP; --=20 2.17.1