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10 Jun 2021 11:33:04 -0700 Received: by stinkbox (sSMTP sendmail emulation); Thu, 10 Jun 2021 21:33:03 +0300 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Date: Thu, 10 Jun 2021 21:32:36 +0300 Message-Id: <20210610183237.3920-9-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210610183237.3920-1-ville.syrjala@linux.intel.com> References: <20210610183237.3920-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 8/9] drm/i915/fbc: Make the cfb allocation loop a bit more legible X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" RnJvbTogVmlsbGUgU3lyasOkbMOkIDx2aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNvbT4KCldy aXRlIHRoZSBjZmIgYWxsb2NhdGlvbiBsb29wIGFzIGFuIGFjdHVhbCBsb29wIGluc3RlYWQgb2Yg c29tZQpoYXJkIHRvIHJlYWQgZ290byB0aGluZy4KClNpZ25lZC1vZmYtYnk6IFZpbGxlIFN5cmrD pGzDpCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJt L2k5MTUvZGlzcGxheS9pbnRlbF9mYmMuYyB8IDUxICsrKysrKysrKysrKy0tLS0tLS0tLS0tLQog MSBmaWxlIGNoYW5nZWQsIDI2IGluc2VydGlvbnMoKyksIDI1IGRlbGV0aW9ucygtKQoKZGlmZiAt LWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkvaW50ZWxfZmJjLmMgYi9kcml2ZXJz L2dwdS9kcm0vaTkxNS9kaXNwbGF5L2ludGVsX2ZiYy5jCmluZGV4IDY0MTVmMmNmZDFhYy4uYjZi ZmI0NDM5YThiIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9kaXNwbGF5L2ludGVs X2ZiYy5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2Rpc3BsYXkvaW50ZWxfZmJjLmMKQEAg LTQ0MCw0NCArNDQwLDQ1IEBAIHN0YXRpYyB1NjQgaW50ZWxfZmJjX3N0b2xlbl9lbmQoc3RydWN0 IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KQogCXJldHVybiBtaW4oZW5kLCBpbnRlbF9mYmNf Y2ZiX2Jhc2VfbWF4KGRldl9wcml2KSk7CiB9CiAKK3N0YXRpYyBpbnQgaW50ZWxfZmJjX21heF9s aW1pdChzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYsIGludCBmYl9jcHApCit7CisJ LyoKKwkgKiBGSVhNRTogRkJDMSBjYW4gaGF2ZSBhcmJpdHJhcnkgY2ZiIHN0cmlkZSwKKwkgKiBz byB3ZSBjb3VsZCBzdXBwb3J0IGRpZmZlcmVudCBjb21wcmVzc2lvbiByYXRpb3MuCisJICovCisJ aWYgKERJU1BMQVlfVkVSKGRldl9wcml2KSA8IDUgJiYgIUlTX0c0WChkZXZfcHJpdikpCisJCXJl dHVybiAxOworCisJLyogV2FGYmNPbmx5MXRvMVJhdGlvOmN0ZyAqLworCWlmIChJU19HNFgoZGV2 X3ByaXYpKQorCQlyZXR1cm4gMTsKKworCS8qIEZCQzIgY2FuIG9ubHkgZG8gMToxLCAxOjIsIDE6 NCAqLworCXJldHVybiBmYl9jcHAgPT0gMiA/IDIgOiA0OworfQorCiBzdGF0aWMgaW50IGZpbmRf Y29tcHJlc3Npb25fbGltaXQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LAogCQkJ CSAgdW5zaWduZWQgaW50IHNpemUsCiAJCQkJICB1bnNpZ25lZCBpbnQgZmJfY3BwKQogewogCXN0 cnVjdCBpbnRlbF9mYmMgKmZiYyA9ICZkZXZfcHJpdi0+ZmJjOwogCXU2NCBlbmQgPSBpbnRlbF9m YmNfc3RvbGVuX2VuZChkZXZfcHJpdik7Ci0JaW50IGNvbXByZXNzaW9uX2xpbWl0ID0gMTsKLQlp bnQgcmV0OwotCi0JLyogSEFDSzogVGhpcyBjb2RlIGRlcGVuZHMgb24gd2hhdCB3ZSB3aWxsIGRv IGluICpfZW5hYmxlX2ZiYy4gSWYgdGhhdAotCSAqIGNvZGUgY2hhbmdlcywgdGhpcyBjb2RlIG5l ZWRzIHRvIGNoYW5nZSBhcyB3ZWxsLgotCSAqCi0JICogVGhlIGVuYWJsZV9mYmMgY29kZSB3aWxs IGF0dGVtcHQgdG8gdXNlIG9uZSBvZiBvdXIgMiBjb21wcmVzc2lvbgotCSAqIGxpbWl0cywgdGhl cmVmb3JlLCBpbiB0aGF0IGNhc2UsIHdlIG9ubHkgaGF2ZSAxIHJlc29ydC4KLQkgKi8KKwlpbnQg cmV0LCBsaW1pdCA9IDE7CiAKIAkvKiBUcnkgdG8gb3Zlci1hbGxvY2F0ZSB0byByZWR1Y2UgcmVh bGxvY2F0aW9ucyBhbmQgZnJhZ21lbnRhdGlvbi4gKi8KIAlyZXQgPSBpOTE1X2dlbV9zdG9sZW5f aW5zZXJ0X25vZGVfaW5fcmFuZ2UoZGV2X3ByaXYsICZmYmMtPmNvbXByZXNzZWRfZmIsCiAJCQkJ CQkgICBzaXplIDw8PSAxLCA0MDk2LCAwLCBlbmQpOwogCWlmIChyZXQgPT0gMCkKLQkJcmV0dXJu IGNvbXByZXNzaW9uX2xpbWl0OworCQlyZXR1cm4gbGltaXQ7CiAKLWFnYWluOgotCS8qIEhXJ3Mg YWJpbGl0eSB0byBsaW1pdCB0aGUgQ0ZCIGlzIDE6NCAqLwotCWlmIChjb21wcmVzc2lvbl9saW1p dCA+IDQgfHwKLQkgICAgKGZiX2NwcCA9PSAyICYmIGNvbXByZXNzaW9uX2xpbWl0ID09IDIpKQot CQlyZXR1cm4gMDsKLQotCXJldCA9IGk5MTVfZ2VtX3N0b2xlbl9pbnNlcnRfbm9kZV9pbl9yYW5n ZShkZXZfcHJpdiwgJmZiYy0+Y29tcHJlc3NlZF9mYiwKLQkJCQkJCSAgIHNpemUgPj49IDEsIDQw OTYsIDAsIGVuZCk7Ci0JaWYgKHJldCAmJiBESVNQTEFZX1ZFUihkZXZfcHJpdikgPD0gNCkgewot CQlyZXR1cm4gMDsKLQl9IGVsc2UgaWYgKHJldCkgewotCQljb21wcmVzc2lvbl9saW1pdCA8PD0g MTsKLQkJZ290byBhZ2FpbjsKLQl9IGVsc2UgewotCQlyZXR1cm4gY29tcHJlc3Npb25fbGltaXQ7 CisJZm9yICg7IGxpbWl0IDw9IGludGVsX2ZiY19tYXhfbGltaXQoZGV2X3ByaXYsIGZiX2NwcCk7 IGxpbWl0IDw8PSAxKSB7CisJCXJldCA9IGk5MTVfZ2VtX3N0b2xlbl9pbnNlcnRfbm9kZV9pbl9y YW5nZShkZXZfcHJpdiwgJmZiYy0+Y29tcHJlc3NlZF9mYiwKKwkJCQkJCQkgICBzaXplID4+PSAx LCA0MDk2LCAwLCBlbmQpOworCQlpZiAocmV0ID09IDApCisJCQlyZXR1cm4gbGltaXQ7CiAJfQor CisJcmV0dXJuIDA7CiB9CiAKIHN0YXRpYyBpbnQgaW50ZWxfZmJjX2FsbG9jX2NmYihzdHJ1Y3Qg ZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYsCi0tIAoyLjMxLjEKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50 ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=