From mboxrd@z Thu Jan 1 00:00:00 1970 From: Praveen Paneri Subject: Re: [PATCH] drm/i915/bxt: Broxton decoupled MMIO Date: Mon, 19 Sep 2016 22:35:45 +0530 Message-ID: <57E01AE9.5030008@intel.com> References: <1473139454-30627-1-git-send-email-praveen.paneri@intel.com> <20160906063631.GF22557@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id AE4936E13E for ; Mon, 19 Sep 2016 17:01:45 +0000 (UTC) In-Reply-To: <20160906063631.GF22557@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , intel-gfx@lists.freedesktop.org, Zhe Wang , Ankitprasad Sharma List-Id: intel-gfx@lists.freedesktop.org CgpPbiBUdWVzZGF5IDA2IFNlcHRlbWJlciAyMDE2IDEyOjA2IFBNLCBDaHJpcyBXaWxzb24gd3Jv dGU6Cj4gT24gVHVlLCBTZXAgMDYsIDIwMTYgYXQgMTA6NTQ6MTRBTSArMDUzMCwgUHJhdmVlbiBQ YW5lcmkgd3JvdGU6Cj4+IERlY291cGxlZCBNTUlPIGlzIGFuIGFsdGVybmF0aXZlIHdheSB0byBh Y2Nlc3MgZm9yY2V3YWtlIGRvbWFpbgo+PiByZWdpc3RlcnMsIHdoaWNoIHJlcXVpcmVzIGxlc3Mg Y3ljbGVzIGFuZCBhdm9pZHMgZnJlcXVlbnQgc29mdHdhcmUKPj4gZm9yY2V3YWtlLgo+Cj4gSG93 IGFib3V0IHdoZW4gZm9yY2V3YWtlIGlzIGFscmVhZHkgaGVsZD8gWW91J2xsIG5vdGUgdGhhdCB3 ZSBzdGlsbApXaWxsIHRyeSB0byBhZGQgdGhlIHNhbWUgY2hlY2sgKGZvciBkb21haW4tPndha2Vf Y291bnQpIGluIGRlY291cGxlZCAKTU1JTyBwYXRoIGFzIHdlbGwgYW5kIGRvIGEgZGlyZWN0IHJl Z2lzdGVyIGFjY2VzcyBpZiBmb3JjZXdha2UgaXMgCmFscmVhZHkgaGVsZC4KPiByZXF1aXJlIGly cS1zcGlubG9ja3Mgc28gdGhlIG1taW8gYWNjZXNzIGlzIHN0aWxsIG5vdCBncmVhdC4gQW5kIHdl Cj4gc3RpbGwgd2lsbCBoYXZlIHRvIGZyZXF1ZW50bHkgdGFrZSBmb3JjZXdha2UgbWFudWFsbHks IGFwcGFyZW50bHkuCj4KPiBEbyB5b3UgaGF2ZSBhbnkgc3RhdGlzdGljcyB0byBzYXkgdGhhdCB3 ZSBkbyByZWR1Y2UgZ3JhYmluZyB0aGUgZncKPiB3YWtlbG9jayBhbmQgdGhhdCB0aGUgYnVzeXdh aXQgeW91IGFkZCBpbnN0ZWFkIGlzIG5lZ2xpZ2libGUuIFlvdSBhcmUKPiBzdGlsbCB1c2luZyBh IDUwbXMgdGltZW91dCwgc28gdGhlcmUgaXMgc29tZSBkb3VidCBhYm91dCAibGVzcyBjeWNsZXMi LgpTb3JyeSBkaWRuJ3QgZmluZCBhbnkgc3VjaCBzdGF0aXN0aWNzIHdpdGggV2luZG93cyBmb2xr cy4KQnV0IGNhbiBkbyBhbiBleGVyY2lzZSBteXNlbGYgdG8gbWVhc3VyZSB0aGUgYWN0dWFsIGJl bmVmaXQgb2YgRGVjb3VwbGVkIApNTUlPLiBQbGVhc2UgY2FuIHlvdSBzdWdnZXN0IHNvbWUgbWV0 aG9kIHRvIGRvIHRoYXQuCgpUaGUgZmVhdHVyZSBkZWZpbml0ZWx5IGhlbHBzIEhXIGZvciBzeW5j aHJvbml6YXRpb24gYXMgdGhlIGN5Y2xlcyBhcmUKaW50ZXJuYWxseSBzZXJpYWxpemVkIGluIEdU IGFuZCBlbGltaW5hdGVzIHRoZSByaXNrIG9mIGhpdHRpbmcgY2VydGFpbgpoYW5ncyB3aGljaCBl eGlzdCBpbiB0aGVvcnkuCj4KPj4gKy8qCj4+ICsgKiBEZWNvdXBsZWQgTU1JTyBhY2Nlc3MgZm9y IG9ubHkgMSBEV09SRAo+PiArICovCj4+ICtzdGF0aWMgdm9pZCBfX2dlbjlfZGVjb3VwbGVkX21t aW9fYWNjZXNzKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwKPj4gKwkJCQkJIHVp bnQzMl90IHJlZywgdTMyICpwdHJfZGF0YSwKPj4gKwkJCQkJIGVudW0gcG93ZXJfZG9tYWlucyBw ZCwgaW50IG9wZXJhdGlvbikKPj4gK3sKPj4gKwl1MzIgY3RybF9yZWdfZGF0YSA9IDA7Cj4+ICsK Pj4gKwlpZiAob3BlcmF0aW9uID09IEdFTjlfREVDT1VQTEVEX09QX1dSSVRFKQo+PiArCQlfX3Jh d19pOTE1X3dyaXRlMzIoZGV2X3ByaXYsCj4+ICsJCQkJR0VOOV9ERUNPVVBMRURfUkVHMF9EVzAs Cj4+ICsJCQkJKnB0cl9kYXRhKTsKPj4gKwo+PiArCWN0cmxfcmVnX2RhdGEgfD0gcmVnOwo+PiAr CWN0cmxfcmVnX2RhdGEgfD0gKG9wZXJhdGlvbiA8PCBHRU45X0RFQ09VUExFRF9PUF9TSElGVCk7 Cj4+ICsJY3RybF9yZWdfZGF0YSB8PSAocGQgPDwgR0VOOV9ERUNPVVBMRURfUERfU0hJRlQpOwo+ PiArCV9fcmF3X2k5MTVfd3JpdGUzMihkZXZfcHJpdiwgR0VOOV9ERUNPVVBMRURfUkVHMF9EVzEs IGN0cmxfcmVnX2RhdGEpOwo+PiArCj4+ICsJY3RybF9yZWdfZGF0YSB8PSBHRU45X0RFQ09VUExF RF9EVzFfR087Cj4+ICsJX19yYXdfaTkxNV93cml0ZTMyKGRldl9wcml2LCBHRU45X0RFQ09VUExF RF9SRUcwX0RXMSwgY3RybF9yZWdfZGF0YSk7Cj4+ICsKPj4gKwlpZiAod2FpdF9mb3JfYXRvbWlj KChfX3Jhd19pOTE1X3JlYWQzMihkZXZfcHJpdiwKPj4gKwkJCUdFTjlfREVDT1VQTEVEX1JFRzBf RFcxKSAmIEdFTjlfREVDT1VQTEVEX0RXMV9HTykgPT0gMCwKPj4gKwkJCUZPUkNFV0FLRV9BQ0tf VElNRU9VVF9NUykpCj4+ICsJCURSTV9FUlJPUigiRGVjb3VwbGVkIE1NSU8gd2FpdCB0aW1lZCBv dXRcbiIpOwo+PiArCj4+ICsJaWYgKG9wZXJhdGlvbiA9PSBHRU45X0RFQ09VUExFRF9PUF9SRUFE KQo+PiArCQkqcHRyX2RhdGEgPSBfX3Jhd19pOTE1X3JlYWQzMihkZXZfcHJpdiwKPj4gKwkJCQlH RU45X0RFQ09VUExFRF9SRUcwX0RXMCk7Cj4+ICt9Cj4+ICsKPj4gICAjZGVmaW5lIEdFTjJfUkVB RF9IRUFERVIoeCkgXAo+PiAgIAl1IyN4IHZhbCA9IDA7IFwKPj4gICAJYXNzZXJ0X3JwbV93YWtl bG9ja19oZWxkKGRldl9wcml2KTsKPj4gQEAgLTkzMiwxMiArOTk3LDI3IEBAIGNodl9yZWFkIyN4 KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiwgaTkxNV9yZWdfdCByZWcsIGJvb2wg dHJhY2UpIHsgXAo+PiAgIHN0YXRpYyB1IyN4IFwKPj4gICBnZW45X3JlYWQjI3goc3RydWN0IGRy bV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LCBpOTE1X3JlZ190IHJlZywgYm9vbCB0cmFjZSkgeyBc Cj4+ICAgCWVudW0gZm9yY2V3YWtlX2RvbWFpbnMgZndfZW5naW5lOyBcCj4+ICsJZW51bSBwb3dl cl9kb21haW5zIHBkX2VuZ2luZTsgXAo+PiAgIAlHRU42X1JFQURfSEVBREVSKHgpOyBcCj4+IC0J ZndfZW5naW5lID0gX19nZW45X3JlZ19yZWFkX2Z3X2RvbWFpbnMob2Zmc2V0KTsgXAo+PiAtCWlm IChmd19lbmdpbmUpIFwKPj4gLQkJX19mb3JjZV93YWtlX2F1dG8oZGV2X3ByaXYsIGZ3X2VuZ2lu ZSk7IFwKPj4gLQl2YWwgPSBfX3Jhd19pOTE1X3JlYWQjI3goZGV2X3ByaXYsIHJlZyk7IFwKPj4g LQlHRU42X1JFQURfRk9PVEVSOyBcCj4+ICsJcGRfZW5naW5lID0gX19nZW45X3JlZ19yZWFkX3Bv d2VyX2RvbWFpbnMob2Zmc2V0KTsgXAo+PiArCWlmIChIQVNfREVDT1VQTEVEX01NSU8oZGV2X3By aXYpICYmIHBkX2VuZ2luZSAmJiB4JTMyID09IDApIHsgXAo+Cj4gTW92ZSB0aGUgcGxhdGZvcm0g dGVzdCBvdXQgb2YgaGVyZSAoc2luY2UgaXQgaXMgYWxyZWFkeSBhIHBlci1wbGF0Zm9ybQo+IHZm dW5jKSBhbmQgdGhlbiBza2lwIHRoZSBkdXBsaWNhdGVkIGdlbjkgZnVuY3Rpb25zLgo+Cj4+ICsJ CXUzMiAqcHRyX2RhdGEgPSAodTMyICopICZ2YWw7IFwKPj4gKwkJdW5zaWduZWQgaSA9IDA7IFwK Pj4gKwkJZm9yIChpID0gMDsgaSA8IHgvMzI7IGkrKykgeyBcCj4KPiBBbmQgdGlkeSB1cCB0aGUg cmVhc3NpZ25tZW50cy4KPgo+PiArCQkJX19nZW45X2RlY291cGxlZF9tbWlvX2FjY2VzcyhkZXZf cHJpdiwgXAo+PiArCQkJCQkob2Zmc2V0ICsgaSo0KSwgXAo+PiArCQkJCQlwdHJfZGF0YSArIGks IFwKPj4gKwkJCQkJcGRfZW5naW5lLCBcCj4+ICsJCQkJCUdFTjlfREVDT1VQTEVEX09QX1JFQUQp OyBcCj4+ICsJCQlwdHJfZGF0YSsrOyBcCj4+ICsJCX0gXAo+PiArCX0gZWxzZSB7IFwKPj4gKwkJ ZndfZW5naW5lID0gX19nZW45X3JlZ19yZWFkX2Z3X2RvbWFpbnMob2Zmc2V0KTsgXAo+PiArCQlp ZiAoZndfZW5naW5lKSBcCj4+ICsJCQlfX2ZvcmNlX3dha2VfYXV0byhkZXZfcHJpdiwgZndfZW5n aW5lKTsgXAo+PiArCQl2YWwgPSBfX3Jhd19pOTE1X3JlYWQjI3goZGV2X3ByaXYsIHJlZyk7IFwK Pj4gKwl9IFwKPj4gKwkJR0VONl9SRUFEX0ZPT1RFUjsgXAo+Cj4gTWlzbGVhZGluZyBpbmRlbnRh dGlvbi4KPgo+PiAgIH0KPj4KPj4gICBfX2dlbjlfcmVhZCg4KQo+PiBAQCAtMTEwMSwxMSArMTE4 MSwyNiBAQCBzdGF0aWMgdm9pZCBcCj4+ICAgZ2VuOV93cml0ZSMjeChzdHJ1Y3QgZHJtX2k5MTVf cHJpdmF0ZSAqZGV2X3ByaXYsIGk5MTVfcmVnX3QgcmVnLCB1IyN4IHZhbCwgXAo+PiAgIAkJYm9v bCB0cmFjZSkgeyBcCj4+ICAgCWVudW0gZm9yY2V3YWtlX2RvbWFpbnMgZndfZW5naW5lOyBcCj4+ ICsJZW51bSBwb3dlcl9kb21haW5zIHBkX2VuZ2luZTsgXAo+PiAgIAlHRU42X1dSSVRFX0hFQURF UjsgXAo+PiAtCWZ3X2VuZ2luZSA9IF9fZ2VuOV9yZWdfd3JpdGVfZndfZG9tYWlucyhvZmZzZXQp OyBcCgoKPj4gLQlpZiAoZndfZW5naW5lKSBcCj4+IC0JCV9fZm9yY2Vfd2FrZV9hdXRvKGRldl9w cml2LCBmd19lbmdpbmUpOyBcCj4+IC0JX19yYXdfaTkxNV93cml0ZSMjeChkZXZfcHJpdiwgcmVn LCB2YWwpOyBcCj4+ICsJcGRfZW5naW5lID0gX19nZW45X3JlZ193cml0ZV9wb3dlcl9kb21haW5z KG9mZnNldCk7IFwKPj4gKwlpZiAoSEFTX0RFQ09VUExFRF9NTUlPKGRldl9wcml2KSAmJiBwZF9l bmdpbmUgJiYgeCUzMiA9PSAwKSB7IFwKPj4gKwkJdTMyICpwdHJfZGF0YSA9ICh1MzIgKikgJnZh bDsgXAo+PiArCQl1bnNpZ25lZCBpID0gMDsgXAo+PiArCQlmb3IgKGkgPSAwOyBpIDwgeC8zMjsg aSsrKSB7IFwKPj4gKwkJCV9fZ2VuOV9kZWNvdXBsZWRfbW1pb19hY2Nlc3MoZGV2X3ByaXYsIFwK Pj4gKwkJCQkJKG9mZnNldCArIGkqNCksIFwKPj4gKwkJCQkJcHRyX2RhdGEgKyBpLCBcCj4+ICsJ CQkJCXBkX2VuZ2luZSwgXAo+PiArCQkJCQlHRU45X0RFQ09VUExFRF9PUF9XUklURSk7IFwKPj4g KwkJCXB0cl9kYXRhKys7IFwKPj4gKwkJfSBcCj4KPiBUaGlzIGlzIHNjYXJ5IGZvciBhIDY0Yml0 IHdyaXRlLiBUaGV5IGFyZSBhc3N1bWVkIHRvIGJlIGFuIGF0b21pYwo+IHRyYW5zYWN0aW9uIHdp dGggaHcgLSB3aGVuIHRoZXkgYXJlIG5vdCB3ZSBlbmNvdW50ZXIgZnVuIHJhY2VzIHdoZXJlIHRo ZQo+IGhhcmR3YXJlIG9wZXJhdGVzIG9uIHRoZSBpbnRlcm1lZGlhdGUgc3RhdGUuIEhlbmNlIHdl IGF2b2lkIHRoZW0uCkRlY291cGxlZCBNTUlPIGN1cnJlbnRseSBkb2Vzbid0IHN1cHBvcnQgc2lu Z2xlIDY0IGJpdCB3cml0ZS4gV2UgY2FuIApjb250aW51ZSB0byB1c2UgZXhpc3RpbmcgbWV0aG9k IGZvciA2NCBiaXQgd3JpdGVzLgpUaGFua3MsClByYXZlZW4KPiAtQ2hpc3IKPgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBs aXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK