From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Weinehall Subject: Re: [PATCH 11/14] drm/i915: Fallback to lower link rate and lane count during link training Date: Fri, 2 Sep 2016 15:03:22 +0300 Message-ID: <20160902120322.uc3mtchxvpoj6eco@boom> References: <1472767699-31211-1-git-send-email-manasi.d.navare@intel.com> <1472767699-31211-12-git-send-email-manasi.d.navare@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 05C7E6EA7A for ; Fri, 2 Sep 2016 12:03:19 +0000 (UTC) Content-Disposition: inline In-Reply-To: <1472767699-31211-12-git-send-email-manasi.d.navare@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Manasi Navare Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBTZXAgMDEsIDIwMTYgYXQgMDM6MDg6MTZQTSAtMDcwMCwgTWFuYXNpIE5hdmFyZSB3 cm90ZToKPiBBY2NvcmRpbmcgdG8gdGhlIERpc3BsYXlQb3J0IFNwZWMsIGluIGNhc2Ugb2YgQ2xv Y2sgUmVjb3ZlcnkgZmFpbHVyZQo+IHRoZSBsaW5rIHRyYWluaW5nIHNlcXVlbmNlIHNob3VsZCBm YWxsIGJhY2sgdG8gdGhlIGxvd2VyIGxpbmsgcmF0ZQo+IGZvbGxvd2VkIGJ5IGxvd2VyIGxhbmUg Y291bnQgdW50aWwgQ1Igc3VjY2VlZHMuCj4gT24gQ1Igc3VjY2VzcywgdGhlIHNlcXVlbmNlIHBy b2NlZWRzIHdpdGggQ2hhbm5lbCBFUS4KPiBJbiBjYXNlIG9mIENoYW5uZWwgRVEgZmFpbHVyZXMs IGl0IHNob3VsZCBmYWxsYmFjayB0bwo+IGxvd2VyIGxpbmsgcmF0ZSBhbmQgbGFuZSBjb3VudCBh bmQgc3RhcnQgdGhlIENSIHBoYXNlIGFnYWluLgo+IAo+IFNpZ25lZC1vZmYtYnk6IE1hbmFzaSBO YXZhcmUgPG1hbmFzaS5kLm5hdmFyZUBpbnRlbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2Ry bS9pOTE1L2ludGVsX2RkaS5jICAgICAgICAgICAgICB8IDEwOSArKysrKysrKysrKysrKysrKysr KysrKy0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcF9saW5rX3RyYWluaW5nLmMg fCAgMTIgKystCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oICAgICAgICAgICAg ICB8ICAgNCArLQo+ICAzIGZpbGVzIGNoYW5nZWQsIDExMCBpbnNlcnRpb25zKCspLCAxNSBkZWxl dGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZGRp LmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGkuYwo+IGluZGV4IDY3YTZhMGIuLjc4 ZDY2ODcgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZGRpLmMKPiAr KysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kZGkuYwo+IEBAIC0xNjM0LDI5ICsxNjM0 LDUwIEBAIHZvaWQgaW50ZWxfZGRpX2Nsa19zZWxlY3Qoc3RydWN0IGludGVsX2VuY29kZXIgKmVu Y29kZXIsCj4gIAl9Cj4gIH0KPiAgCj4gLXN0YXRpYyB2b2lkIGludGVsX2RkaV9wcmVfZW5hYmxl X2RwKHN0cnVjdCBpbnRlbF9lbmNvZGVyICplbmNvZGVyLAo+ICtzdGF0aWMgdm9pZCBpbnRlbF9k ZGlfcHJlX2VuYWJsZV9lZHAoc3RydWN0IGludGVsX2VuY29kZXIgKmVuY29kZXIsCj4gIAkJCQkg ICAgaW50IGxpbmtfcmF0ZSwgdWludDMyX3QgbGFuZV9jb3VudCwKPiAtCQkJCSAgICBzdHJ1Y3Qg aW50ZWxfc2hhcmVkX2RwbGwgKnBsbCwKPiAtCQkJCSAgICBib29sIGxpbmtfbXN0KQo+ICsJCQkJ ICAgIHN0cnVjdCBpbnRlbF9zaGFyZWRfZHBsbCAqcGxsKQo+ICB7Cj4gIAlzdHJ1Y3QgaW50ZWxf ZHAgKmludGVsX2RwID0gZW5jX3RvX2ludGVsX2RwKCZlbmNvZGVyLT5iYXNlKTsKPiAgCXN0cnVj dCBkcm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiA9IHRvX2k5MTUoZW5jb2Rlci0+YmFzZS5kZXYp Owo+ICAJZW51bSBwb3J0IHBvcnQgPSBpbnRlbF9kZGlfZ2V0X2VuY29kZXJfcG9ydChlbmNvZGVy KTsKPiAgCj4gIAlpbnRlbF9kcF9zZXRfbGlua19wYXJhbXMoaW50ZWxfZHAsIGxpbmtfcmF0ZSwg bGFuZV9jb3VudCwKPiAtCQkJCSBsaW5rX21zdCk7Cj4gLQlpZiAoZW5jb2Rlci0+dHlwZSA9PSBJ TlRFTF9PVVRQVVRfRURQKQo+IC0JCWludGVsX2VkcF9wYW5lbF9vbihpbnRlbF9kcCk7Cj4gKwkJ CQkgZmFsc2UpOwo+ICsKPiArCWludGVsX2VkcF9wYW5lbF9vbihpbnRlbF9kcCk7Cj4gIAo+ICAJ aW50ZWxfZGRpX2Nsa19zZWxlY3QoZW5jb2RlciwgcGxsKTsKPiAgCWludGVsX3ByZXBhcmVfZHBf ZGRpX2J1ZmZlcnMoZW5jb2Rlcik7Cj4gIAlpbnRlbF9kZGlfaW5pdF9kcF9idWZfcmVnKGVuY29k ZXIpOwo+ICAJaW50ZWxfZHBfc2lua19kcG1zKGludGVsX2RwLCBEUk1fTU9ERV9EUE1TX09OKTsK PiAgCWludGVsX2RwX3N0YXJ0X2xpbmtfdHJhaW4oaW50ZWxfZHApOwo+IC0JaWYgKHBvcnQgIT0g UE9SVF9BIHx8IElOVEVMX0dFTihkZXZfcHJpdikgPj0gOSkKPiArCWlmIChwb3J0ICE9IFBPUlRf QSB8fCBJTlRFTF9JTkZPKGRldl9wcml2KS0+Z2VuID49IDkpCgpJIHRoaW5rIHlvdSBnb3QgdGhp cyBiYWNrd2FyZHMuIFdlICp3YW50KiB0byB1c2UgSU5URUxfR0VOKCkuCgpbc25pcF0KCgpLaW5k IHJlZ2FyZHMsIERhdmlkIFdlaW5laGFsbApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5m cmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0 aW5mby9pbnRlbC1nZngK