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[109.252.91.252]) by smtp.googlemail.com with ESMTPSA id c22sm454850lff.202.2020.10.02.11.04.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Oct 2020 11:04:06 -0700 (PDT) Subject: Re: [PATCH v4 3/3] iommu/tegra-smmu: Add PCI support To: Nicolin Chen References: <20201002060807.32138-1-nicoleotsuka@gmail.com> <20201002060807.32138-4-nicoleotsuka@gmail.com> <20201002174532.GA29706@Asurada-Nvidia> From: Dmitry Osipenko Message-ID: <6e4e3cb8-a71b-40b4-7ab6-b3f0d2ec6e0c@gmail.com> Date: Fri, 2 Oct 2020 21:04:06 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201002174532.GA29706@Asurada-Nvidia> Content-Language: en-US Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.com, thierry.reding@gmail.com, linux-tegra@vger.kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" MDIuMTAuMjAyMCAyMDo0NSwgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gT24gRnJpLCBPY3Qg MDIsIDIwMjAgYXQgMDU6MzU6MjRQTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtvIHdyb3RlOgo+PiAw Mi4xMC4yMDIwIDA5OjA4LCBOaWNvbGluIENoZW4g0L/QuNGI0LXRgjoKPj4+IEBAIC04NjUsNyAr ODY2LDExIEBAIHN0YXRpYyBzdHJ1Y3QgaW9tbXVfZ3JvdXAgKnRlZ3JhX3NtbXVfZGV2aWNlX2dy b3VwKHN0cnVjdCBkZXZpY2UgKmRldikKPj4+ICAJZ3JvdXAtPnNtbXUgPSBzbW11Owo+Pj4gIAln cm91cC0+c29jID0gc29jOwo+Pj4gIAo+Pj4gLQlncm91cC0+Z3JvdXAgPSBpb21tdV9ncm91cF9h bGxvYygpOwo+Pj4gKwlpZiAoZGV2X2lzX3BjaShkZXYpKQo+Pj4gKwkJZ3JvdXAtPmdyb3VwID0g cGNpX2RldmljZV9ncm91cChkZXYpOwo+Pj4gKwllbHNlCj4+PiArCQlncm91cC0+Z3JvdXAgPSBn ZW5lcmljX2RldmljZV9ncm91cChkZXYpOwo+Pj4gKwo+Pj4gIAlpZiAoSVNfRVJSKGdyb3VwLT5n cm91cCkpIHsKPj4+ICAJCWRldm1fa2ZyZWUoc21tdS0+ZGV2LCBncm91cCk7Cj4+PiAgCQltdXRl eF91bmxvY2soJnNtbXUtPmxvY2spOwo+Pj4gQEAgLTEwNjksMjIgKzEwNzQsMzIgQEAgc3RydWN0 IHRlZ3JhX3NtbXUgKnRlZ3JhX3NtbXVfcHJvYmUoc3RydWN0IGRldmljZSAqZGV2LAo+Pj4gIAlp b21tdV9kZXZpY2Vfc2V0X2Z3bm9kZSgmc21tdS0+aW9tbXUsIGRldi0+Zndub2RlKTsKPj4+ICAK Pj4+ICAJZXJyID0gaW9tbXVfZGV2aWNlX3JlZ2lzdGVyKCZzbW11LT5pb21tdSk7Cj4+PiAtCWlm IChlcnIpIHsKPj4+IC0JCWlvbW11X2RldmljZV9zeXNmc19yZW1vdmUoJnNtbXUtPmlvbW11KTsK Pj4+IC0JCXJldHVybiBFUlJfUFRSKGVycik7Cj4+PiAtCX0KPj4+ICsJaWYgKGVycikKPj4+ICsJ CWdvdG8gZXJyX3N5c2ZzOwo+Pj4gIAo+Pj4gIAllcnIgPSBidXNfc2V0X2lvbW11KCZwbGF0Zm9y bV9idXNfdHlwZSwgJnRlZ3JhX3NtbXVfb3BzKTsKPj4+IC0JaWYgKGVyciA8IDApIHsKPj4+IC0J CWlvbW11X2RldmljZV91bnJlZ2lzdGVyKCZzbW11LT5pb21tdSk7Cj4+PiAtCQlpb21tdV9kZXZp Y2Vfc3lzZnNfcmVtb3ZlKCZzbW11LT5pb21tdSk7Cj4+PiAtCQlyZXR1cm4gRVJSX1BUUihlcnIp Owo+Pj4gLQl9Cj4+PiArCWlmIChlcnIgPCAwKQo+Pj4gKwkJZ290byBlcnJfdW5yZWdpc3RlcjsK Pj4+ICsKPj4+ICsjaWZkZWYgQ09ORklHX1BDSQo+Pj4gKwllcnIgPSBidXNfc2V0X2lvbW11KCZw Y2lfYnVzX3R5cGUsICZ0ZWdyYV9zbW11X29wcyk7Cj4+PiArCWlmIChlcnIgPCAwKQo+Pj4gKwkJ Z290byBlcnJfYnVzX3NldDsKPj4+ICsjZW5kaWYKPj4+ICAKPj4+ICAJaWYgKElTX0VOQUJMRUQo Q09ORklHX0RFQlVHX0ZTKSkKPj4+ICAJCXRlZ3JhX3NtbXVfZGVidWdmc19pbml0KHNtbXUpOwo+ Pj4gIAo+Pj4gIAlyZXR1cm4gc21tdTsKPj4+ICsKPj4+ICtlcnJfYnVzX3NldDogX19tYXliZV91 bnVzZWQ7Cj4+Cj4+IF9fbWF5YmVfdW51c2VkPwo+IAo+IEluIG9yZGVyIHRvIG11dGUgYSBidWls ZCB3YXJuaW5nIHdoZW4gQ09ORklHX1BDST1uLi4uCj4gCgpva2F5Cl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBs aXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5v cmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==