From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manasi Navare Subject: Re: [PATCH 4/5] drm/i915: Find fallback link rate/lane count Date: Thu, 17 Nov 2016 11:44:45 -0800 Message-ID: <20161117194444.GA18199@intel.com> References: <1479179603-28476-1-git-send-email-manasi.d.navare@intel.com> <1479179603-28476-5-git-send-email-manasi.d.navare@intel.com> <87d1huz2ih.fsf@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <87d1huz2ih.fsf@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Jani Nikula Cc: Daniel Vetter , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org T24gVGh1LCBOb3YgMTcsIDIwMTYgYXQgMDI6NTg6NDZQTSArMDIwMCwgSmFuaSBOaWt1bGEgd3Jv dGU6Cj4gT24gVHVlLCAxNSBOb3YgMjAxNiwgTWFuYXNpIE5hdmFyZSA8bWFuYXNpLmQubmF2YXJl QGludGVsLmNvbT4gd3JvdGU6Cj4gPiBJZiBsaW5rIHRyYWluaW5nIGZhaWxzLCB0aGVuIHdlIG5l ZWQgdG8gZmFsbGJhY2sgdG8gbG93ZXIKPiA+IGxpbmsgcmF0ZSBmaXJzdCBhbmQgaWYgbGluayB0 cmFpbmluZyBmYWlscyBhdCBSQlIsIHRoZW4KPiA+IGZhbGxiYWNrIHRvIGxvd2VyIGxhbmUgY291 bnQuCj4gPiBUaGlzIGZ1bmN0aW9uIGZpbmRzIHRoZSBuZXh0IGxvd2VyIGxpbmsgcmF0ZS9sYW5l IGNvdW50Cj4gPiB2YWx1ZSBhZnRlciBsaW5rIHRyYWluaW5nIGZhaWx1cmUuCj4gPgo+ID4gdjI6 Cj4gPiBTcXVhc2ggdGhlIHBhdGNoIHRoYXQgcmV0dXJucyB0aGUgbGluayByYXRlIGluZGV4IChK YW5pIE5pa3VsYSkKPiA+Cj4gPiBBY2tlZC1ieTogVG9ueSBDaGVuZyA8dG9ueS5jaGVuZ0BhbWQu Y29tPgo+ID4gQWNrZWQtYnk6IEhhcnJ5IFdlbnRsYW5kIDxoYXJyeS53ZW50bGFuZEBhbWQuY29t Pgo+ID4gQ2M6IFZpbGxlIFN5cmphbGEgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgo+ ID4gQ2M6IEphbmkgTmlrdWxhIDxqYW5pLm5pa3VsYUBsaW51eC5pbnRlbC5jb20+Cj4gPiBDYzog RGFuaWVsIFZldHRlciA8ZGFuaWVsLnZldHRlckBpbnRlbC5jb20+Cj4gPiBTaWduZWQtb2ZmLWJ5 OiBNYW5hc2kgTmF2YXJlIDxtYW5hc2kuZC5uYXZhcmVAaW50ZWwuY29tPgo+ID4gLS0tCj4gPiAg ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYyAgfCA0MiArKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKysrKysrCj4gPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2 LmggfCAgNiArKysrKysKPiA+ICAyIGZpbGVzIGNoYW5nZWQsIDQ4IGluc2VydGlvbnMoKykKPiA+ Cj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYyBiL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwLmMKPiA+IGluZGV4IGExYjAxODEuLmU4N2I0NTEgMTAw NjQ0Cj4gPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jCj4gPiArKysgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jCj4gPiBAQCAtMjg4LDYgKzI4OCw0OCBAQCBz dGF0aWMgaW50IGludGVsX2RwX2NvbW1vbl9yYXRlcyhzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2Rw LAo+ID4gIAkJCSAgICAgICBjb21tb25fcmF0ZXMpOwo+ID4gIH0KPiA+ICAKPiA+ICtzdGF0aWMg aW50IGludGVsX2RwX2xpbmtfcmF0ZV9pbmRleChzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwLAo+ ID4gKwkJCQkgICAgaW50ICpjb21tb25fcmF0ZXMsIGludCBsaW5rX3JhdGUpCj4gPiArewo+ID4g KwlpbnQgY29tbW9uX2xlbjsKPiA+ICsJaW50IGluZGV4Owo+ID4gKwo+ID4gKwljb21tb25fbGVu ID0gaW50ZWxfZHBfY29tbW9uX3JhdGVzKGludGVsX2RwLCBjb21tb25fcmF0ZXMpOwo+ID4gKwlm b3IgKGluZGV4ID0gMDsgaW5kZXggPCBjb21tb25fbGVuOyBpbmRleCsrKSB7Cj4gPiArCQlpZiAo bGlua19yYXRlID09IGNvbW1vbl9yYXRlc1tjb21tb25fbGVuIC0gaW5kZXggLSAxXSkKPiA+ICsJ CQlyZXR1cm4gY29tbW9uX2xlbiAtIGluZGV4IC0gMTsKPiA+ICsJfQo+ID4gKwo+ID4gKwlyZXR1 cm4gLTE7Cj4gPiArfQo+ID4gKwo+ID4gK2ludCBpbnRlbF9kcF9nZXRfbGlua190cmFpbl9mYWxs YmFja192YWx1ZXMoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCwKPiA+ICsJCQkJCSAgICBpbnQg bGlua19yYXRlLCB1aW50OF90IGxhbmVfY291bnQpCj4gPiArewo+ID4gKwlpbnQgY29tbW9uX3Jh dGVzW0RQX01BWF9TVVBQT1JURURfUkFURVNdID0ge307Cj4gPiArCWludCBjb21tb25fbGVuOwo+ ID4gKwlpbnQgbGlua19yYXRlX2luZGV4ID0gLTE7Cj4gPiArCj4gPiArCWNvbW1vbl9sZW4gPSBp bnRlbF9kcF9jb21tb25fcmF0ZXMoaW50ZWxfZHAsIGNvbW1vbl9yYXRlcyk7Cj4gPiArCWxpbmtf cmF0ZV9pbmRleCA9IGludGVsX2RwX2xpbmtfcmF0ZV9pbmRleChpbnRlbF9kcCwKPiA+ICsJCQkJ CQkgICBjb21tb25fcmF0ZXMsCj4gPiArCQkJCQkJICAgbGlua19yYXRlKTsKPiA+ICsJaWYgKGxp bmtfcmF0ZV9pbmRleCA+IDApIHsKPiA+ICsJCWludGVsX2RwLT5mYWxsYmFja19saW5rX3JhdGVf aW5kZXggPSBsaW5rX3JhdGVfaW5kZXggLSAxOwo+ID4gKwkJaW50ZWxfZHAtPmZhbGxiYWNrX2xp bmtfcmF0ZSA9IGNvbW1vbl9yYXRlc1tpbnRlbF9kcC0+ZmFsbGJhY2tfbGlua19yYXRlX2luZGV4 XTsKPiAKPiBmYWxsYmFja19saW5rX3JhdGVfaW5kZXggYW5kIGZhbGxiYWNrX2xpbmtfcmF0ZSBh cmUgdHdvIHdheXMgdG8gZXhwcmVzcwo+IHRoZSBzYW1lIHRoaW5nLCBhbmQgeW91IGNhbiBkZXJp dmUgb25lIGZyb20gdGhlIG90aGVyLiBXaGVuIHlvdSBoYXZlCj4gdHdvLCB5b3UgcnVuIHRoZSBy aXNrIG9mIGhhdmluZyB0aGVtIG91dCBvZiBzeW5jLiBJIHRob3VnaHQgSSdkCj4gbWVudGlvbmVk IHRoaXMgaW4gZWFybGllciByZXZpZXcuCj4gCj4gUGxlYXNlIGRvIG5vdCBzdG9yZSBmYWxsYmFj a19saW5rX3JhdGVfaW5kZXggaW4gaW50ZWxfZHAuIE9ubHkgc3RvcmUKPiBmYWxsYmFja19saW5r X3JhdGUuIFlvdSBjYW4gdXNlIHlvdXIgaW50ZWxfZHBfbGlua19yYXRlX2luZGV4KCkgZnVuY3Rp b24KPiB3aGVuIHlvdSBuZWVkIHRvIGNvbnZlcnQgcmF0ZSB0byBpbmRleC4KPiAKPiBNb3Jlb3Zl ciwgcmVzZXR0aW5nIHRoZSBzdGF0ZSBiZWNvbWVzIG1vcmUgY2xlYXIgd2hlbiBhbGwgY2FuIGJl IHNldCB0bwo+IDAuCj4gCj4gQlIsCj4gSmFuaS4KPgoKVGhhbmtzIEphbmkuCkZyb20gdGhlIHBy ZXZpb3VzIGZlZWRiYWNrLCBJIHJlbW92ZWQgdGhlIHJlZHVuZGFudCBsaW5rX3RyYWluX2ZhaWxl ZCB2YXJpYWJsZQpzdG9yZWQgaW4gaW50ZWxfZHAsIGJ1dCByZXRhaW5lZCB0aGUgbGlua19yYXRl X2luZGV4LiBJIHdpbGwgbG9vayBhdCB0aGlzIGFuZCBzZWUKaWYgdGhpcyBjYW4gYmUgb3B0aW1p emVkLiAKCk1hbmFzaQoKIAo+ID4gKwkJaW50ZWxfZHAtPmZhbGxiYWNrX2xhbmVfY291bnQgPSBp bnRlbF9kcF9tYXhfbGFuZV9jb3VudChpbnRlbF9kcCk7Cj4gPiArCX0gZWxzZSBpZiAobGFuZV9j b3VudCA+IDEpIHsKPiA+ICsJCWludGVsX2RwLT5mYWxsYmFja19saW5rX3JhdGVfaW5kZXggPSBj b21tb25fbGVuIC0gMTsKPiA+ICsJCWludGVsX2RwLT5mYWxsYmFja19saW5rX3JhdGUgPSBjb21t b25fcmF0ZXNbaW50ZWxfZHAtPmZhbGxiYWNrX2xpbmtfcmF0ZV9pbmRleF07Cj4gPiArCQlpbnRl bF9kcC0+ZmFsbGJhY2tfbGFuZV9jb3VudCA9IGxhbmVfY291bnQgPj4gMTsKPiA+ICsJfSBlbHNl IHsKPiA+ICsJCURSTV9FUlJPUigiTGluayBUcmFpbmluZyBVbnN1Y2Nlc3NmdWxcbiIpOwo+ID4g KwkJcmV0dXJuIC0xOwo+ID4gKwl9Cj4gPiArCj4gPiArCXJldHVybiAwOwo+ID4gK30KPiA+ICsK PiA+ICBzdGF0aWMgZW51bSBkcm1fbW9kZV9zdGF0dXMKPiA+ICBpbnRlbF9kcF9tb2RlX3ZhbGlk KHN0cnVjdCBkcm1fY29ubmVjdG9yICpjb25uZWN0b3IsCj4gPiAgCQkgICAgc3RydWN0IGRybV9k aXNwbGF5X21vZGUgKm1vZGUpCj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYuaAo+ID4gaW5kZXgg NzUyNTJlYy4uNTVjZWI0NCAxMDA2NDQKPiA+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2lu dGVsX2Rydi5oCj4gPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcnYuaAo+ID4g QEAgLTg4Nyw2ICs4ODcsMTAgQEAgc3RydWN0IGludGVsX2RwIHsKPiA+ICAJdWludDMyX3QgRFA7 Cj4gPiAgCWludCBsaW5rX3JhdGU7Cj4gPiAgCXVpbnQ4X3QgbGFuZV9jb3VudDsKPiA+ICsJaW50 IGZhbGxiYWNrX2xpbmtfcmF0ZTsKPiA+ICsJdWludDhfdCBmYWxsYmFja19sYW5lX2NvdW50Owo+ ID4gKwlpbnQgZmFsbGJhY2tfbGlua19yYXRlX2luZGV4Owo+ID4gKwlib29sIGxpbmtfdHJhaW5f ZmFpbGVkOwo+ID4gIAl1aW50OF90IHNpbmtfY291bnQ7Cj4gPiAgCWJvb2wgbGlua19tc3Q7Cj4g PiAgCWJvb2wgaGFzX2F1ZGlvOwo+ID4gQEAgLTEzODMsNiArMTM4Nyw4IEBAIGJvb2wgaW50ZWxf ZHBfaW5pdF9jb25uZWN0b3Ioc3RydWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqaW50ZWxfZGlnX3Bv cnQsCj4gPiAgdm9pZCBpbnRlbF9kcF9zZXRfbGlua19wYXJhbXMoc3RydWN0IGludGVsX2RwICpp bnRlbF9kcCwKPiA+ICAJCQkgICAgICBpbnQgbGlua19yYXRlLCB1aW50OF90IGxhbmVfY291bnQs Cj4gPiAgCQkJICAgICAgYm9vbCBsaW5rX21zdCk7Cj4gPiAraW50IGludGVsX2RwX2dldF9saW5r X3RyYWluX2ZhbGxiYWNrX3ZhbHVlcyhzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwLAo+ID4gKwkJ CQkJICAgIGludCBsaW5rX3JhdGUsIHVpbnQ4X3QgbGFuZV9jb3VudCk7Cj4gPiAgdm9pZCBpbnRl bF9kcF9zdGFydF9saW5rX3RyYWluKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApOwo+ID4gIHZv aWQgaW50ZWxfZHBfc3RvcF9saW5rX3RyYWluKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApOwo+ ID4gIHZvaWQgaW50ZWxfZHBfc2lua19kcG1zKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHAsIGlu dCBtb2RlKTsKPiAKPiAtLSAKPiBKYW5pIE5pa3VsYSwgSW50ZWwgT3BlbiBTb3VyY2UgVGVjaG5v bG9neSBDZW50ZXIKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3Jn Cmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4 Cg==