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[109.252.91.252]) by smtp.googlemail.com with ESMTPSA id 78sm330330lfn.20.2020.10.02.07.35.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Oct 2020 07:35:24 -0700 (PDT) Subject: Re: [PATCH v4 3/3] iommu/tegra-smmu: Add PCI support To: Nicolin Chen , thierry.reding@gmail.com, joro@8bytes.org References: <20201002060807.32138-1-nicoleotsuka@gmail.com> <20201002060807.32138-4-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: Date: Fri, 2 Oct 2020 17:35:24 +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: <20201002060807.32138-4-nicoleotsuka@gmail.com> Content-Language: en-US Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.com 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" MDIuMTAuMjAyMCAwOTowOCwgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gQEAgLTg2NSw3ICs4 NjYsMTEgQEAgc3RhdGljIHN0cnVjdCBpb21tdV9ncm91cCAqdGVncmFfc21tdV9kZXZpY2VfZ3Jv dXAoc3RydWN0IGRldmljZSAqZGV2KQo+ICAJZ3JvdXAtPnNtbXUgPSBzbW11Owo+ICAJZ3JvdXAt PnNvYyA9IHNvYzsKPiAgCj4gLQlncm91cC0+Z3JvdXAgPSBpb21tdV9ncm91cF9hbGxvYygpOwo+ ICsJaWYgKGRldl9pc19wY2koZGV2KSkKPiArCQlncm91cC0+Z3JvdXAgPSBwY2lfZGV2aWNlX2dy b3VwKGRldik7Cj4gKwllbHNlCj4gKwkJZ3JvdXAtPmdyb3VwID0gZ2VuZXJpY19kZXZpY2VfZ3Jv dXAoZGV2KTsKPiArCj4gIAlpZiAoSVNfRVJSKGdyb3VwLT5ncm91cCkpIHsKPiAgCQlkZXZtX2tm cmVlKHNtbXUtPmRldiwgZ3JvdXApOwo+ICAJCW11dGV4X3VubG9jaygmc21tdS0+bG9jayk7Cj4g QEAgLTEwNjksMjIgKzEwNzQsMzIgQEAgc3RydWN0IHRlZ3JhX3NtbXUgKnRlZ3JhX3NtbXVfcHJv YmUoc3RydWN0IGRldmljZSAqZGV2LAo+ICAJaW9tbXVfZGV2aWNlX3NldF9md25vZGUoJnNtbXUt PmlvbW11LCBkZXYtPmZ3bm9kZSk7Cj4gIAo+ICAJZXJyID0gaW9tbXVfZGV2aWNlX3JlZ2lzdGVy KCZzbW11LT5pb21tdSk7Cj4gLQlpZiAoZXJyKSB7Cj4gLQkJaW9tbXVfZGV2aWNlX3N5c2ZzX3Jl bW92ZSgmc21tdS0+aW9tbXUpOwo+IC0JCXJldHVybiBFUlJfUFRSKGVycik7Cj4gLQl9Cj4gKwlp ZiAoZXJyKQo+ICsJCWdvdG8gZXJyX3N5c2ZzOwo+ICAKPiAgCWVyciA9IGJ1c19zZXRfaW9tbXUo JnBsYXRmb3JtX2J1c190eXBlLCAmdGVncmFfc21tdV9vcHMpOwo+IC0JaWYgKGVyciA8IDApIHsK PiAtCQlpb21tdV9kZXZpY2VfdW5yZWdpc3Rlcigmc21tdS0+aW9tbXUpOwo+IC0JCWlvbW11X2Rl dmljZV9zeXNmc19yZW1vdmUoJnNtbXUtPmlvbW11KTsKPiAtCQlyZXR1cm4gRVJSX1BUUihlcnIp Owo+IC0JfQo+ICsJaWYgKGVyciA8IDApCj4gKwkJZ290byBlcnJfdW5yZWdpc3RlcjsKPiArCj4g KyNpZmRlZiBDT05GSUdfUENJCj4gKwllcnIgPSBidXNfc2V0X2lvbW11KCZwY2lfYnVzX3R5cGUs ICZ0ZWdyYV9zbW11X29wcyk7Cj4gKwlpZiAoZXJyIDwgMCkKPiArCQlnb3RvIGVycl9idXNfc2V0 Owo+ICsjZW5kaWYKPiAgCj4gIAlpZiAoSVNfRU5BQkxFRChDT05GSUdfREVCVUdfRlMpKQo+ICAJ CXRlZ3JhX3NtbXVfZGVidWdmc19pbml0KHNtbXUpOwo+ICAKPiAgCXJldHVybiBzbW11Owo+ICsK PiArZXJyX2J1c19zZXQ6IF9fbWF5YmVfdW51c2VkOwoKX19tYXliZV91bnVzZWQ/Cl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlz dAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91 bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==