From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manasi Navare Subject: [PATCH v2] drm/i915/dp: Validate cached link rate and lane count before retraining Date: Mon, 27 Mar 2017 14:44:50 -0700 Message-ID: <1490651090-4263-1-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 mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F9176E199 for ; Mon, 27 Mar 2017 21:40:40 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org Q3VycmVudGx5IGludGVsX2RwX2NoZWNrX2xpbmtfc3RhdHVzKCkgdHJpZXMgdG8gcmV0cmFpbiB0 aGUgbGluayBpZgpDbG9jayByZWNvdmVyeSBvciBDaGFubmVsIEVRIGZvciBhbnkgb2YgdGhlIGxh bmVzIGluZGljYXRlZCBieQppbnRlbF9kcC0+bGFuZV9jb3VudCBpcyBub3Qgc2V0LiBIb3dldmVy IHRoZXNlIHZhbHVlcyBjYWNoZWQgaW4gaW50ZWxfZHAKc3RydWN0dXJlIGNhbiBiZSBzdGFsZSBp ZiBsaW5rIHRyYWluaW5nIGhhcyBmYWlsZWQgZm9yIHRoZXNlIHZhbHVlcwpkdXJpbmcgcHJldmlv dXMgbW9kZXNldC4gT3IgdGhlc2UgdmFsdWVzIGNhbiBnZXQgc3RhbGUgc2luY2Ugd2UgaGF2ZQpu b3cgcmUgcmVhZCB0aGUgRFBDRCByZWdpc3RlcnMgb3IgaXQgY2FuIGJlIDAgaW4gY2FzZSBvZiBj b25uZWN0ZWQgYm9vdApjYXNlLgoKVGhpcyBwYXRjaCB2YWxpZGF0ZXMgdGhlc2UgdmFsdWVzIGFn YWluc3QgdGhlIGNvbW1vbl9yYXRlcyBhbmQgbWF4IGxhbmUKY291bnQgdmFsdWVzLgoKVGhpcyBp cyBhYnNvbHV0ZWx5IHJlcXVpcmVkIGluY2FzZSB0aGUgY29tbW9uX3JhdGVzIG9yIG1heCBsYW5l IGNvdW50CmFyZSBub3cgZGlmZmVyZW50IGR1ZSB0byBsaW5rIGZhbGxiYWNrLgoKdjI6CiogSW5j bHVkZSB0aGUgRklYTUUgY29tbW5ldCBpbnNpZGUgdGhlIGZ1bmN0aW9uIChWaWxsZSBTeXJqYWxh KQoqIFJlbW92ZSB0aGUgcmVkdW5kYW50IHBhcmVudGhlc2lzIChWaWxsZSBTeXJqYWxhKQoKQ2M6 IFZpbGxlIFN5cmphbGEgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgpDYzogSmFuaSBO aWt1bGEgPGphbmkubmlrdWxhQGxpbnV4LmludGVsLmNvbT4KU2lnbmVkLW9mZi1ieTogTWFuYXNp IE5hdmFyZSA8bWFuYXNpLmQubmF2YXJlQGludGVsLmNvbT4KLS0tCiBkcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9kcC5jIHwgMjggKysrKysrKysrKysrKysrKysrKysrKysrKy0tLQogMSBmaWxl IGNoYW5nZWQsIDI1IGluc2VydGlvbnMoKyksIDMgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2lu dGVsX2RwLmMKaW5kZXggZmQ5NmE2Yy4uZDBhYjMwNyAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUv ZHJtL2k5MTUvaW50ZWxfZHAuYworKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5j CkBAIC0yOTUsNiArMjk1LDI3IEBAIHN0YXRpYyBpbnQgaW50ZWxfZHBfbGlua19yYXRlX2luZGV4 KHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHAsCiAJcmV0dXJuIC0xOwogfQogCitzdGF0aWMgYm9v bCBpbnRlbF9kcF9saW5rX3BhcmFtc19pc192YWxpZChzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2Rw KQoreworCWludCBjb21tb25fcmF0ZXNbRFBfTUFYX1NVUFBPUlRFRF9SQVRFU107CisJaW50IGxp bmtfcmF0ZV9pbmRleDsKKworCS8qIEZJWE1FOiB3ZSBuZWVkIHRvIHN5bmNocm9uaXplIHRoZSBj dXJyZW50IGxpbmsgcGFyYW1ldGVycyB3aXRoCisJICogaGFyZHdhcmUgcmVhZG91dC4gQ3VycmVu dGx5IGZhc3QgbGluayB0cmFpbmluZyBkb2Vzbid0IHdvcmsKKwkgKiBvbiBib290LXVwLgorCSAq LworCWxpbmtfcmF0ZV9pbmRleCA9IGludGVsX2RwX2xpbmtfcmF0ZV9pbmRleChpbnRlbF9kcCwK KwkJCQkJCSAgIGNvbW1vbl9yYXRlcywKKwkJCQkJCSAgIGludGVsX2RwLT5saW5rX3JhdGUpOwor CWlmIChsaW5rX3JhdGVfaW5kZXggPCAwKQorCQlyZXR1cm4gZmFsc2U7CisJaWYgKCFpbnRlbF9k cC0+bGFuZV9jb3VudCB8fAorCSAgICBpbnRlbF9kcC0+bGFuZV9jb3VudCA+IGludGVsX2RwX21h eF9sYW5lX2NvdW50KGludGVsX2RwKSkKKwkJcmV0dXJuIGZhbHNlOworCisJcmV0dXJuIHRydWU7 Cit9CisKIGludCBpbnRlbF9kcF9nZXRfbGlua190cmFpbl9mYWxsYmFja192YWx1ZXMoc3RydWN0 IGludGVsX2RwICppbnRlbF9kcCwKIAkJCQkJICAgIGludCBsaW5rX3JhdGUsIHVpbnQ4X3QgbGFu ZV9jb3VudCkKIHsKQEAgLTQyMjQsOSArNDI0NSwxMCBAQCBpbnRlbF9kcF9jaGVja19saW5rX3N0 YXR1cyhzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwKQogCWlmICghdG9faW50ZWxfY3J0YyhpbnRl bF9lbmNvZGVyLT5iYXNlLmNydGMpLT5hY3RpdmUpCiAJCXJldHVybjsKIAotCS8qIEZJWE1FOiB3 ZSBuZWVkIHRvIHN5bmNocm9uaXplIHRoaXMgc29ydCBvZiBzdHVmZiB3aXRoIGhhcmR3YXJlCi0J ICogcmVhZG91dC4gQ3VycmVudGx5IGZhc3QgbGluayB0cmFpbmluZyBkb2Vzbid0IHdvcmsgb24g Ym9vdC11cC4gKi8KLQlpZiAoIWludGVsX2RwLT5sYW5lX2NvdW50KQorCS8qIFZhbGlkYXRlIHRo ZSBjYWNoZWQgdmFsdWVzIG9mIGludGVsX2RwLT5saW5rX3JhdGUgYW5kCisJICogaW50ZWxfZHAt PmxhbmVfY291bnQgYmVmb3JlIGF0dGVtcHRpbmcgdG8gcmV0cmFpbi4KKwkgKi8KKwlpZiAoIWlu dGVsX2RwX2xpbmtfcGFyYW1zX2lzX3ZhbGlkKGludGVsX2RwKSkKIAkJcmV0dXJuOwogCiAJLyog UmV0cmFpbiBpZiBDaGFubmVsIEVRIG9yIENSIG5vdCBvayAqLwotLSAKMi4xLjQKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5n IGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVk ZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=